CONTENTS Application and Research Design of Numerical Control Voltage Source in Practical Production. ..Gan Diyuan;Huang Linshu;Tan Hao 1 Intelligent anti-theft lock racking system ......................Pang Shuo;Qujian Fu;Miaolan Li 9 Smart Home based on Raspberry Pi ..Liu Jiwei;Liu Mengchen;Gao Ranran 15 Distributed Wirele Monitoring System of Factory Machinery Temperature. .......Cao zhan-peng:Zhou bo;Mu-tingting 21 The design of semiconductor laser modulation circuit based on DDS technology. .Jiang yanhui;Sun chaofan;Chen wenxing 27 Life rescue system based on CC1101... ....Gao Jiafei;Deng Wen;Sun Liyuan 35 Design of intelligent guide rod based on the infrared alarm. .XIE Yantong:CUI Yuqi;DENG Qitian 41 Design and implementation of a movement monitoring system based on the human body sensor and android technology. Caijing:Zhourui;Tianruyun;Liulei 45 Design and implementation of speech presenter microphone based on LD3320.. Liang Yi-gang:Huang Ji-wei;Liu Shi-bin 1 Portable positioning device for field wiring of electromagnetic field .....Wang Haoyu;Zhang Caihong:Ren Wei 57 Design and Implementation of Micro-quality PVDF-based Weighing System....... ......Peng Cong;Liu Bo;Yan Jiaqi 63 The research and design of the single oil well tank of information monitoring and control system... .......Cai Jing:Wang Qian;Yang Yujing:Li Chang 67 The design of bluetooth entrance control system..... Qi Wang:Chao Yang:Yiguang Bao 71 Ultrasonic Ranging Based on blind navigation Headphones. .....Xiaotong Cui;Zhaofeng Zhang:Xulei Wang 77 The design of a tracing luggage robot based on the ultrasonic ranging.... Ning Hong-yang,Wang Ti-kuo,Zhao Yi 81
I CONTENTS Application and Research Design of Numerical Control Voltage Source in Practical Production .......... .............................................................................................. Gan Diyuan; Huang Linshu; Tan Hao 1 Intelligent anti-theft lock racking system ................................................................................................ .................................................................................................. Pang Shuo; Qujian Fu; Miaolan Li 9 Smart Home based on Raspberry Pi ........................................................................................................ ............................................................................................ Liu Jiwei; Liu Mengchen; Gao Ranran 15 Distributed Wirele Monitoring System of Factory Machinery Temperature .......................................... ............................................................................................. Cao zhan-peng; Zhou bo; Mu-tingting 21 The design of semiconductor laser modulation circuit based on DDS technology ................................. ...................................................................................... Jiang yanhui; Sun chaofan; Chen wenxing 27 Life rescue system based on CC1101 ...................................................................................................... .................................................................................................. Gao Jiafei; Deng Wen; Sun Liyuan 35 Design of intelligent guide rod based on the infrared alarm .................................................................... ........................................................................................... XIE Yantong; CUI Yuqi; DENG Qitian 41 Design and implementation of a movement monitoring system based on the human body sensor and android technology ................................................................................................................................... ................................................................................................. Caijing; Zhourui; Tianruyun; Liulei 45 Design and implementation of speech presenter microphone based on LD3320 .................................... ....................................................................................... Liang Yi-gang; Huang Ji-wei; Liu Shi-bin 51 Portable positioning device for field wiring of electromagnetic field ..................................................... .......................................................................................... Wang Haoyu; Zhang Caihong; Ren Wei 57 Design and Implementation of Micro-quality PVDF-based Weighing System ....................................... .......................................................................................................... Peng Cong; Liu Bo; Yan Jiaqi 63 The research and design of the single oil well tank of information monitoring and control system ....... .................................................................................. Cai Jing; Wang Qian; Yang Yujing; Li Chang 67 The design of bluetooth entrance control system .................................................................................... ................................................................................................. Qi Wang; Chao Yang; Yiguang Bao 71 Ultrasonic Ranging Based on blind navigation Headphones ................................................................... ................................................................................... Xiaotong Cui; Zhaofeng Zhang;Xulei Wang 77 The design of a tracing luggage robot based on the ultrasonic ranging ................................................... ......................................................................................... Ning Hong-yang; Wang Ti-kuo; Zhao Yi 81
Gan Diy App and Re ch Design of Numerical Control Voltage Source n Pr al Production Application and Research Design of Numerical Control Voltage Source in Practical Production Gan Diyuan;Huang Linshu;Tan Hao College of Instrumentation and Electrical Engineering.University Changchun 130026 Abstract-With the rapid development of science and technology,power technology has increasingly become a practical and comprehensive engineering technology.widely used in all walks of life,and the numerical control power supply technology is articarly important.Microseond,pulse type umerical c is by thei of the digital utp p width can be adjusted.Thi cal control voltage source,in es the design and implementation of the micro-level,pulse typ nerical control voltage source..The digital control technology of single chip microcomputer is integrated into the design o voltage souree,reasonably and effectively.It makes the control of the power supply is more simple and implementation of the power supply of CNC. rds-Numerical control:ATmega16 single chip omputer:D/A conversion:A/D conversion supply system has been to the beginning of INTRODUCTION twenty-first Century,more advanced fourth generation distributed power supply structure,the ALONG with the development of science and power industry is facing a new challenge,that is. technology,the modern information technology the existing system in the embedded power has provided a more broad development platform supply digital control and intelligent systems.The for the development of power electronics numerical control voltage source is from the last technology.at the same time.the power supply century 80's only then truly starts to develop technology has been put forward more stringen During this period.the entire system of powe standards and requirements.Power supply is a electronics theory began to gradually establish men and continuously improve.in a long time.the numerical control yol source technology has long-term ent in the 90 whole system,this is a nductor manufacturers to develop on the nun .Numerical out at that tir of the ofsimlhtion& gy nowadays,and it is widely s in a osition,so thi logy ca e w source is usually the rch on the nume erical votag band switch and potentiometer to adjust the started late,and in the late voltage source.the voltage value of the voltage ninety's of the last century,under the Nationa meter to indicate the size of the voltage value.so Natural Science Foundation of China,Zhejiang that the reading accuracy is not high.and easy to University.North China Electric Powe wear.Compared with the traditional voltage University and other colleges and universities source.the numerical control voltage source have launched this aspect of the basic theoretical based on single chip microcomputer control has research. the characteristics of easy control,high reliability Numerical control power supply technology and high accuracy.It is a good solution to the has been develoned from 1980s to now but its problem of the traditional voltage source products still exist in this way or that.such as its From the first generation of the 80's in the last high resolution.low reliability.etc..It can be seer ,the first eneration ofdistributed ower that the development direction of the numerical 1
Gan Diyuan etc.: Application and Research Design of Numerical Control Voltage Source in Practical Production 1 Application and Research Design of Numerical Control Voltage Source in Practical Production Gan Diyuan; Huang Linshu; Tan Hao （College of Instrumentation and Electrical Engineering, Jilin University Changchun 130026） Abstract-With the rapid development of science and technology, power technology has increasingly become a practical and comprehensive engineering technology, widely used in all walks of life, and the numerical control power supply technology is particularly important. .Microsecond, pulse type numerical control voltage source is controlled by the size of the digital output voltage. The output pulse voltage amplitude, pulse width, frequency can be adjusted. This paper studies the development of numerical control voltage source, introduces the design and implementation of the micro - level, pulse type numerical control voltage source,.The digital control technology of single chip microcomputer is integrated into the design of voltage source, reasonably and effectively .It makes the control of the power supply is more simple and implementation of the power supply of CNC. Key words-Numerical control; ATmega16 single chip microcomputer; D/A conversion; A/D conversion INTRODUCTION ALONG with the development of science and technology, the modern information technology has provided a more broad development platform for the development of power electronics technology, at the same time, the power supply technology has been put forward more stringent standards and requirements. Power supply is a very important part of the electronic equipment, the traditional power in the work of the error, will have a considerable impact on the accuracy of the whole system, this is a more stringent requirements on the numerical control voltage source. Numerical control voltage source is one of the equipments which is often used in the electronic technology nowadays, and it is widely used in various industries. The traditional voltage source is usually the band switch and potentiometer to adjust the voltage source, the voltage value of the voltage meter to indicate the size of the voltage value, so that the reading accuracy is not high, and easy to wear. Compared with the traditional voltage source, the numerical control voltage source based on single chip microcomputer control has the characteristics of easy control, high reliability and high accuracy. It is a good solution to the problem of the traditional voltage source. From the first generation of the 80's in the last century, the first generation of distributed power supply system has been to the beginning of twenty-first Century, more advanced fourth generation distributed power supply structure, the power industry is facing a new challenge, that is, the existing system in the embedded power supply digital control and intelligent systems. The numerical control voltage source is from the last century 80 's only then truly starts to develop. During this period, the entire system of power electronics theory began to gradually establish and continuously improve, in a long time, the numerical control voltage source technology has a long-term development; in the 90's, semiconductor manufacturers to develop a numerical control voltage source management technology, but at that time, this technology has been used in a wide range of simulation control scheme, which is in a inferior position, so this technology can not be widely used. The research on the numerical control voltage source in China started late, and in the late ninety's of the last century, under the National Natural Science Foundation of China, Zhejiang University, North China Electric Power University and other colleges and universities have launched this aspect of the basic theoretical research. Numerical control power supply technology has been developed from 1980s to now, but its products still exist in this way or that, such as its high resolution, low reliability, etc.. It can be seen that the development direction of the numerical
The English Proceedings of the College of&Electrical Engineering.n University.in the Second Half of 2015 sply is mainly to improve the +2.5Vvoltage.As long as the AD7802 pin intoa above shortcomings.at the same time,on this V voltage.it can be programmed to make its 6 basis,we must continue to innovate and reform foot output of a 2.5V or 3.0V voltage,its accuracy is 2.5V+ImV or 3+1mV.The specific 1 OVERALL SCHEME SELECTION circuit is shown in Figure 2. 1.I The overall design scheme of the voltage source of the pulse type numerical control AC voltage input 100V--240V by a switching power supply output 5V DC voltage to the AVR MCU power supply,the output signal to the A78 microcontroller to drive the D/A conversion part, while using the AVR microcontroller internal oscillator provides a clock signal for it,then the signal for analog then to the circuit of pow make signal i igre 2 AD780 and th nea voltage reg t1460bin8-2.5 circu voltag produ +2.5V chip pro tage.Lt14 to the du mmy loa fte you can ma n and small package siz t this is an ope whic micro power b gap reterence,very signal output to prec voltage regulator. And h a MOS pipe,to control the switch tube guided by It1460bin8-2.5 does not need to outpu pulse width modulation on time so as to control compensation capacitor,and it is still stable the output voltage of the MOS tube,only need to capacitive load.Its specific wiring diagram is be connected with the dummy load can be shown in Figure 3: completed in a closed-loop system.In the end. Lt1460bing-2.5 through the software programming the voltage source output pulse voltage amplitude frequenc and pulse width can be reached by the reasonable setting of several soft switch,which can reach the final requirements.The overall structure diagram is shown in Figure 1. e 3.2 5 wirin t)pa h。 abov sche One of the ive the AD780 input tage,an s 8 ng,you can output a relatively st voltage.Scheme 2 as long as to It1460bin8-2.3 FigureOverall structure diagram provide input voltage of a 3.4V-20V and 1.2 Generation +2.5V scheme selection between the second heel legs connected with a In order to guarantee the normal operation of 0.luF capacitor,you can generate a stable+2.5V the circuit,it is needed to provide a+2.5V point output voltage.Compared with the scheme.the voltage to its part of the circuit and now there are circuit is much simpler and requires only one two options to choose from. capacitor,and the output voltage is stable,and the Program 1:the high precision reference voltage error is small.To sum up,through the comparison source AD is produced by AD780 to provide the program two more in line with the design
The English Proceedings of the College of Instrumentation & Electrical Engineering, Jilin University, in the Second Half of 2015 2 control power supply is mainly to improve the above shortcomings, at the same time, on this basis, we must continue to innovate and reform. 1 OVERALL SCHEME SELECTION 1.1 The overall design scheme of the voltage source of the pulse type numerical control AC voltage input 100V -- 240V by a switching power supply output 5V DC voltage to the AVR MCU power supply, the output signal to the microcontroller to drive the D/A conversion part, while using the AVR microcontroller internal oscillator provides a clock signal for it, then the output signal for analog signals; then to the amplifying circuit of power supply, make simulation the output voltage signal is amplified by the amplifying circuit as required; and then the amplified voltage through the voltage regulator circuit, you can get a stable output voltage, connected to the dummy load after you can make it work, but this is an open loop structure, which requires the chip outputs a PWM signal output to a MOS pipe, to control the switch tube guided by pulse width modulation on time so as to control the output voltage of the MOS tube, only need to be connected with the dummy load can be completed in a closed-loop system. In the end, through the software programming, the voltage source output pulse voltage amplitude, frequency and pulse width can be reached by the reasonable setting of several soft switch, which can reach the final requirements. The overall structure diagram is shown in Figure 1. Figure 1 Overall structure diagram 1.2 Generation +2.5V scheme selection In order to guarantee the normal operation of the circuit, it is needed to provide a +2.5V point voltage to its part of the circuit, and now there are two options to choose from. Program 1: the high precision reference voltage source AD is produced by AD780 to provide the +2.5V voltage. As long as the AD7802 pin into a 5V voltage, it can be programmed to make its 6 foot output of a 2.5V or 3.0V voltage, its accuracy is 2.5V + 1mV or 3 + 1mV. The specific circuit is shown in Figure 2. Figure 2 AD780 wiring mode Scheme two: using linear (linear) lt1460bin8-2.5 chip production company to produce +2.5V voltage. Lt1460bin8-2.5 is a low power, high precision and small package size of the micro power bandgap reference, very suitable for precision voltage regulator. And the lt1460bin8-2.5 does not need to output compensation capacitor, and it is still stable capacitive load. Its specific wiring diagram is shown in Figure 3: Figure 3 lt1460bin8-2.5 wiring mode Scheme comparison: the above two schemes can output 2.5V voltage. One of the solutions is to give the AD780 input 5V voltage, and its 8 foot floating, you can output a relatively stable +2.5V voltage. Scheme 2 as long as to lt1460bin8-2.5 provide input voltage of a 3.4V~20V and between the second heel legs connected with a 0.1uF capacitor, you can generate a stable + 2.5V output voltage. Compared with the scheme, the circuit is much simpler and requires only one capacitor, and the output voltage is stable, and the error is small. To sum up, through the comparison program two more in line with the design
Gan Diyuan and Research Design of Numeric Control Voltage the final choice of a program Icore chip selection 2 WORKING PRINCIPLE OF EACH UNIT CIRCUIT regulator power supply LM317 is adjustable 3-terminal voltage 2.I Control section regulator power supply,it is possible to The design of the numerical control part is continuous uninterrupted output can be 1.2 to based on the microcontroller ATmegal6 as the 37V ADJUSTABLE DC voltage,but the only fly core to complete.ATmegal6 pin diagram is in the ointment is it can output to a continuous shown in Figure 4 below.ATmegal6 is a high tone adjustable positive voltage,not negative speed,low power,8 bit CMOS microcontroller output voltage.LM317 regulator contains an based on the enhanced RISC AVR structure internal Overcurrent protection circuit and designed by ATMEL company.Because of its overheat protection circuit;the output voltage advanced instruction set and single clock cycle regulating circuit is composed of a resistor and a instruction execution time.the contradiction sliding rheostat between power consumption and processing Program two:the use of Cw78XX series three speed inal voltage regulator In this design,the toprovide eries a driv signal for each (V stabilized it is by the ure that the circui signal,to hre fee wh the th e MOS tube.Bel will introduce some of th ca ca ATmegal6 inf ve a with the can improve th a very typical chip,its main leatures are as load at the instant of impact,also can keep good follows waveform.And the stability of the circuit using RISC core with advanced LOW architecture 78XX series is also relatively good.reliable.easy and Harvard architecture.it has the 1MIPS MHz to use,and the price is cheap.The input voltage high speed computing execution ability,with of the 78XX series voltage regulator module is independent program bus and data bus,mos 36V and the lowest input voltage is higher thar instruction execution cycle is a single instruction the output voltage 3V~4V. cycle which contains a large amount of Scheme comparison:the two schemes can be non-volatile memory program and data memory. used as the core chip of the construction of the The chip contains two reset circuit,which regulator circuit.LM317 is the three terminal includes 32 general-purpose working registers. adjustable regulator chip.the and it all works as static work.As input,it can be adjustable,adjustable is 1.2V- -37V:the current can be CW78XX series ATmegal6. which can regulator chip her MCU Bt. comp very little and th meg the abili high have a supe ove set and ·Sped on n circuit and adjust speripheral more simple .Be protectior circuit, s very tion to the ATmegal convenient,and compared with LM317,it can several major pins as well as the functions of its output negative voltage.But the output voltage of pins the CW78XX series is a fixed value and is not ATmegal6 pin diagram is shown in Figure 4 adjustable.In summary, with the design below,and the main function of the pin is requirements of this paper.the need for a three analyzed as follows: adjustable voltage regulator chip.so the program is more in line with the design requirements,so 3
Gan Diyuan etc.: Application and Research Design of Numerical Control Voltage Source in Practical Production 3 requirements, so the choice of scheme two. 1.3 Voltage regulator circuit core chip selection Scheme one: LM317 adjustable three terminal regulator power supply LM317 is adjustable 3-terminal voltage regulator power supply, it is possible to continuous uninterrupted output can be 1.2 to 37V ADJUSTABLE DC voltage, but the only fly in the ointment is it can output to a continuous tone adjustable positive voltage, not negative output voltage. LM317 regulator contains an internal Overcurrent protection circuit and overheat protection circuit; the output voltage regulating circuit is composed of a resistor and a sliding rheostat. Program two: the use of CW78XX series three terminal voltage regulator 78XX series are fixed three terminal voltage stabilized power supply, it is by the output (VO), input pin (VI) and ground anchor (GND) the three tube feet, wherein, the input end is connected to a capacitor can better filtering, waveform in order to achieve a better; output end is connected with the capacitor can improve the load at the instant of impact, also can keep good waveform. And the stability of the circuit using 78XX series is also relatively good, reliable, easy to use, and the price is cheap. The input voltage of the 78XX series voltage regulator module is 36V, and the lowest input voltage is higher than the output voltage 3V~4V. Scheme comparison: the two schemes can be used as the core chip of the construction of the regulator circuit. LM317 is the three terminal adjustable regulator chip, the output voltage adjustable, adjustable range is 1.2V~37V; the maximum current can be provided for 1.5A. CW78XX series is the three terminal fixed regulator chip, using it to build and the required peripheral components is very little, and the circuit has a flow protection circuit, over temperature protection circuit and adjust the protection circuit, the use is very reliable, convenient, and compared with LM317, it can output negative voltage. But the output voltage of the CW78XX series is a fixed value and is not adjustable. In summary, with the design requirements of this paper, the need for a three adjustable voltage regulator chip, so the program is more in line with the design requirements, so the final choice of a program. 2 WORKING PRINCIPLE OF EACH UNIT CIRCUIT 2.1 Control section The design of the numerical control part is based on the microcontroller ATmega16 as the core to complete. ATmega16 pin diagram is shown in Figure 4 below. ATmega16 is a high speed, low power, 8 bit CMOS microcontroller based on the enhanced RISC AVR structure designed by ATMEL company. Because of its advanced instruction set and single clock cycle instruction execution time, the contradiction between power consumption and processing speed can be reduced. In this design, the ATmega16 is used to provide a driving signal for each part of the circuit to ensure that the circuit can drive the normal; secondly, the output of the PWM signal, to drive the MOS tube. Below will introduce some of the ATmega16 information. ATmega16 is the AVR series microcontroller in a very typical chip, its main features are as follows: RISC core with advanced LOW architecture and Harvard architecture, it has the 1MIPS / MHz high speed computing execution ability, with independent program bus and data bus, most instruction execution cycle is a single instruction cycle, which contains a large amount of non-volatile memory program and data memory. The chip contains two reset circuit, which includes 32 general-purpose working registers, and it all works as static work. As input, it can be set to three state high impedance input or AVR. The above is about the characteristics of ATmega16, which can be seen from the comparison with other 8 - MCU Bit, Bit 8 - MC ATmega16 has the ability to have a super - reduced instruction set and high - speed operation, and its peripheral circuits are more simple. Below will be a brief introduction to the ATmega16 several major pins as well as the functions of its pins. ATmega16 pin diagram is shown in Figure 4 below, and the main function of the pin is analyzed as follows:
The English Proceedings of the College of&Electrical Engineering University.in the Second Half of 015 ESE Figure5 Reset circuit 2 3 Dmenload circuit In this design.in order to drive the chip so tha it can work n mally we need to chin inside th ing pro e In order to facilitate e the pr CP1 2 the the ontroller.this Figure 4 ATmegal6 downloadcicut.heae specific circuit diagram a shown in Figure 6below the d this First c F all t D/A to provide clock signa n an in gh I to ensure that th D/A part of the work to generate 阳5 PWM wave,used to control a MOSFET of the guide and turn off.finally to use its port D to RESET complete a keyboard circuit.so as to control the output pulse voltage amplitude,frequency and pulse width,ensure their value can be adjusted 22 Reset circuit Reset circuit which is to use it to restore the Figure 6 Download citcuit circuit to the beginning of the state.In the whole 2 dD/A couversion section circuit work process.the need to reset the In this design.in addition to the use o microcontroller in the boot,and in many othe single-chip mic computer control but also need the reset op to be involved in digital/analog (that is,D/A) complet rsion the need to chi n ha one is signal to ng to th is inth of s of its output h genera nig a pe outp outpu DDT had a pul Acc rding to o the design requirements ng,ther will grad analog signal ouput f by the high variable level,whi is required to b makes the MCl port level from I to 0. verted into a vo ltage signal,and then output to completing the MCU reset operation.Anothe the next level.In this paper,we take LTC1655 as way is to reset the keys.In this article.the key is the core chip of the D/A.and then implement the to use the way to complete the reset operation.the D/A conversion function by the external circuit. specific circuit diagram shown in Figure 5 below. The basic data of LTC1655 are as follows: LTC1655 is a rail to rail voltage output device (rail to rail.ie.the input and output voltage range of the device can reach the power supply voltage),it has 16 bit digital to analog converte
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ch Design of Nu山 erica Control Source in Practica Production (DAC). is the an output buffer with voltage of a vacant.The specific circuit is shown in Figure single chip c 9 below typical power for 3MW single 5 power supply.And the of LTC1655 to build the circuit required for the very few components. use very simple and reliable. 4 OND Figure 9 Amplifier circuit d A formula for calculating the magnification of the amplifier (2-)is sho P=R+R Type (2-1) Type:Pfor the mplification of the circuit Figure 7D/A nversion Can be drawn from the formula,the circuit of the In this design,in order to achieve the fina amplification factor is 6 times output voltage 24V -OV can be adjusted,the need 2.6 Voltage regulator circuil to use an amplifier circuit D/A conversion of In the front,have more or less mentioned about analog voltage signal amplification,in order to the relevant content of the regulator circuit achieve the final design requirements.In this Through the comparison of the scheme,the right paper,the design of the amplifier circuit is built voltage regulator chip is LM317,and the specific with the integrated circuit OP07 of operational circuit is shown in Figure 10. amplifier.OP07 has very low offset voltage.so in L317 the application process,in the vast majority of cases do not need additional zero adiustment measures.Its chip pin diagram is shown in Figure 8 below 可MUL HW区0P07D 4 In th 州可 回oUn nd stable 0-24 hig The adjustable NC=NO CONNECT 301 31 be greater thar FigureOP07 pinou Since the +25V voltage has been used for the From the figure can be seen,OP07,the second sake of convenience,we use +25V as the inpu foot is a reverse input end,in it through a resistor voltage of LM317.By means of the investigation grounding.Annihilator Tripods is same to the data,it is known that the voltage difference input,the design of it is directly connected to the between the adi terminal (adjustable end)and the through D/a conversion from the analog voltage output temminal of the LM317 is LM317,which signal.OP07 four ground,seven feet by +25V can be derived from the calculation formula of 5
Gan (DAC), incl reference, it single chip c typical powe power supply the circuit re use very simp Fi 2.5 Amplifyin In this de output voltag to use an am analog voltag achieve the paper, the de with the inte amplifier. OP the applicatio cases do no measures. Its 8 below. From the f foot is a reve grounding, A input, the des through D / a signal. OP07 n Diyuan etc.: A luding an o is the powe computer, are er consumptio y. And the us quired for the ple and reliab igure 7 D/A con ng circuit esign, in orde ge 24V - 0V c mplifier circ ge signal am final design esign of the a egrated circu P07 has very l on process, i ot need addi s chip pin diag Figure 8 OP figure can be erse input end Annihilator T sign of it is d a conversion 7 four ground Application and output buffe er supply vo +5V voltage on for 3MW se of LTC165 e very few co ble. nversion circuit er to achieve can be adjuste cuit D/A con mplification, i n requiremen amplifier circ uit OP07 of o low offset vo in the vast m itional zero gram is show P07 pinout seen, OP07, d, in it throug Tripods is sa directly conne from the anal d, seven feet d Research Desi er with a oltage of a e, is a very single 5V 55 to build omponents, e the final ed, the need nversion of in order to nts. In this cuit is built operational oltage, so in majority of adjustment wn in Figure the second h a resistor ame to the ected to the log voltage t by +25V ign of Numerical Control Volta voltage, to left vacant 9 below: A formu the amplif Type: P fo R1= R3= Can be dra amplificat 2.6 Voltag In the fr the releva Through t voltage reg circuit is s In orde operation 0V~24V m The outpu voltage o Since the sake of co voltage of data, it i between th output term can be de age Source in P o maintain its t. The specific Figure 9 Am ula for calcul fier (2-1) is sh r the amplific =R8=10K; =R9=50K; awn from the ion factor is 6 e regulator ci ront, have mo ant content he compariso gulator chip i hown in Figu LM317 IN adj R2 Figure 10 Volta r to guarante of the circu must be highe ut voltage is f LM317 mu +25V voltag onvenience, w f LM317. By s known tha he adj termin minal of the erived from t R P = Practical Produc s normal work c circuit is sh Amplifier circuit lating the ma hown: cation of the c e formula, the 6 times. ircuit ore or less me of the regu on of the sche is LM317, an ure 10. 7 OUT 2 R1 age regulator cir tee the norm uit, the inpu er than the o s adjustable, must be great ge has been we use +25V means of the at the volta nal (adjustable LM317 is L the calculatio 1 2 1 R R R + ction 5 k. Left leg are own in Figure agnification o Type (2-1 circuit; e circuit of the entioned abou ulator circuit eme, the righ nd the specific C1 C2 rcuit mal and stable ut voltage o utput voltage so the inpu ter than 24V used for the V as the inpu e investigation ge difference e end) and the LM317, which on formula o 5 e e of ) e ut t. ht c e of e. ut V. e ut n e e h of
The English Proceedings of the College of nstrumentation&Electrical University.in the Second Half of 2015 the of shown in the program design of the micro level,pulse type formula(2-2). source includes the following several Uo=125*0+2 aspects:first,we must drive the single chip RI ype(2-2) microcomputer,which can output a PWM drive signal.Secondly,the digital signal is converted Type:Uout for LM317output voltage: into analog signal,then the output circuit is set RI for the adi end to the output of the up. resistance,that is,R; 3.2 Program block diagram R2 adj to the ground resistance,that is,the The flow chart of the program is shown in R2in the picture. Figure 12 below. 2 7 kevboard module As the final design requirement is to make the output pulse voltage waveform amplitude and pulse width can be adiusted so in order to facilitate control and the are ing.in Define the variabks and e specific calculate the caraneters show Enable LTC1655 to complete DA corversioo Figure l1 Kevboard circuit As shown above,due to the single chip ATmegal6 its PC port has a built-in N programmable pull resistor can be controlled b software programming to pull the resistor is effective or invalid.so there is no end the top of the al6 port of the PC port.as Figure 12 Program flow chart pull the PC 33 Princinles this led by need tage am cy,pulse The first is to the initial programming you can var achieve the above functions that th signal to normal drive every level of the device 3 SOFTWARE DESIGN SYSTEM to ensure that each component can work properly which is the most important basis for 3.I Program design programming.The second is to achieve the output Because it is the numerical control voltage pulse voltage amplitude,frequency and pulse source.so this design,in addition to the need for width can be adjusted.To achieve this,the first to hardware circuit,but also the need to complete use an if statement to determine whether a key is the design of the software to meet the pressed,if no key is pressed is out of the loop,ifa requirements of the final target.In this design,the key is pressed,the next step of judgment,if a key
The English 6 the output v formula (2-2) Type: Uout fo R1 for resistance, th R2 adj R2 in the pict 2.7 Keyboard As the fina output puls frequency an order to fac through softw achieve its n keyboard of Figure11. As shown ATmega16 programmabl software pro effective or i the top of ATmega16 p software prog pull of the controlled by frequency, pu through rea achieve the a 3 SOFTWARE 3.1 Program Because it source, so th hardware cir the design requirements Uo h Proceedings o voltage of 1. ). for LM317 ou r the adj end hat is, R1; to the groun ture. d module al design requ se voltage nd pulse width ilitate contro ware program numerical val f the specific Figure 11 Keyb n above, du its PC p le pull resisto ogramming t invalid, so th the resistor port of the P gramming to effective. y the output p ulse width of asonable pro above function DESIGN SYST design t is the num is design, in rcuit, but also of the so s of the final t out =1.25*( of the College o .25V, as sho utput voltage; d to the out nd resistance, uirement is to waveform h can be adju ol and the k mming, in the ue can be ad c circuit as board circuit ue to the s port has a or can be con to pull the ere is no con r, but direct PC port, as lo pull the PC p Six key sw pulse voltage the increase o ogramming, ns. TEM merical contr addition to th o the need to oftware to target. In this ) 1 2 (1 R R + f Instrumentatio own in the Type (2-2) tput of the that is, the o make the amplitude, usted, so in key switch, software to djusted, the shown in ingle chip a built-in ntrolled by resistor is nnection on tly to the ong as the port on the witches are amplitude, or decrease you can rol voltage he need for o complete meet the design, the on & Electrical Engineering, J program d voltage so aspects: f microcom signal. Se into analo up. 3.2 Progra The flo Figure 12 3.3 Princip In this consider t issues. Th the variou to ensure t signal to n to ensure t which is programm pulse volt width can use an IF pressed, if key is pres Jilin University, design of the ource includ first, we mu puter, which condly, the d og signal, the am block diag ow chart of t below. Figure 12 Pro ples of progra process de the following e first is to co us ports and t that the micro normal drive that each com s the mos ming. The seco tage amplitu be adjusted. statement to d f no key is pre ssed, the next , in the Second e micro leve des the follo ust drive the can output a digital signal en the output gram the program ogram flow cha am operation esign tasks, g two aspects onsider the in the definition ocontroller ou every level mponent can w st important ond is to achie ude, frequenc To achieve th determine wh essed is out o t step of judg Half of 2015 el, pulse type owing severa e single chip a PWM drive l is converted t circuit is se is shown in art the need to s of the main nitialization o n of variables ut of the drive of the device work properly t basis fo eve the outpu cy and pulse his, the first to hether a key i f the loop, if a ment; if a key e al p e d et n o n of s, er e, y, or ut e o s a y
Gan Research Design of Numerica Control olge Source in Practical Production is pressed.again to deterine whethe key is presse t a key is pres through a switch ment to determine the press is which one key,after a nested if statements,by easonable setting the worthy of upper and lower bounds,it can meet the design requirements. 4 RESULT ANALYSIS Figure A PWM microcontroller ouput a ave 4.1 Instruments used in the experiment 1 welding equipment:electric iron,tin suctioner.scissors,pliers,board,wire number. 2 measuring equipment:DC power supply 0-30V digital storage oscilloscope.digital: 3 required software:DXP.AVR ICC. 4.2 Test method Figue B Peak value of pulse voltage for 20V In this paper,the design requirements of the Figure 1 Output waveform detection final output is an amplitude.fr and n width can he a ted pulse 5 CONLUSION belong to of the tes res so the Through the power of the power rof multipl est I deb gging experience,we ,only need fro om acro the load leads to two ca voltage contr voltage outpu headers,the probe of oscilloscope probe and measured LM317 output voltage change trend grounding clamp are respectively connected with roughly consistent with linear variation,and key two needles are arranged above can be measured press to set the voltage value,measure its output the output waveform. voltage,the error is within 1%.reached the set Select the test of DC regulated power supply is voltage value,measurement feedback back Taiwan-Wai Gwinstek company production, voltage,can be the voltage stability in the model for GPD-3303C selection of oscilloscone standard value near a range,not to increase or is also Taiwan Wai Gwinstek compan decrease.The power source can be used in a very production,model for GDS-2202A.The peak and high accuracy in the laboratory,in order to make peak measurement function of oscilloscope is the appearance and easy to carry.we increase the used in the test design of its appearance,put it into a small box. e when necessary,can take out the use,which is not design scheme is corre and feasible.Figure 13 the chip PWM dr References signal (Fig A)wi h tput o m (Figure B)Through [1]Li Yuhui.Research on the design and key can be seen. avelorm of th issues of the CNC system of AC/DC power along th eep,rise /fall along the to reach the level of supply [J]..Zhejiang University.2004 few of the time,and the frequency is larger,the ripple is smaller.the 2]Zhou Gongming.The design of numerical indicators have reached the design requirements. control power supply based on AT89S51 MCU of Mianyang Normal University.2012,5. 3]Zhao Jun.The development of [technology. 2005.05:13-16
Gan is pressed, jit key is pressed through a sw is which one reasonable se bounds, it can 4 RESULT AN 4.1 Instrumen 1 weldin suctioner, sci 2 measuri 0~30V, digita 3 required 4.2 Test meth In this pap final output i width can b belong to the accuracy of oscilloscope test, only nee headers, the grounding cla two needles a the output wa Select the Taiwan - W model for GP is also Tai production, m peak measur used in the te 4.3 Detection Through re design schem shows the ou signal (Figur voltage pulse image can b rise / fall alon to reach the frequency is indicators hav n Diyuan etc.: A tter, after aga d. If a key is witch statemen e key, after a etting the wor n meet the de NALYSIS nts used in the ng equipmen issors, pliers, ing equipme al storage osc software: DX hod per, the desi is an amplitud be adjusted p e AC voltage the test res to test its ou ed from acros probe of o amp are resp are arranged aveform. test of DC re Wai Gwinstek PD-3303C, s iwan - Wa model for GD rement funct est. n and analysis epeated testin me is correct utput of a si re A) with e waveform ( e seen, the o ng the steep, level of a fe s larger, the ve reached th Application and ain to determin pressed, key nt to determin nested if stat rthy of upper esign requirem e experiment nt: electric board, wire n ent: DC pow illoscope, dig XP, AVR ICC gn requireme de, frequency pulse voltage e, in order to sults, so the utput wavefo ss the load le oscilloscope ectively conn above can be egulated powe k company p election of o ai Gwinstek DS-2202A. Th tion of oscil s of output wa ng, it is prov and feasible. ingle chip PW the final ou (Figure B). T output wavefo rise / fall alon ew of the tim ripple is sm he design requ d Research Desi ne whether calculation, ne the press tements, by r and lower ments. iron, tin number; wer supply gital; . ents of the y and pulse e, it is to ensure the choice of orm. In the eads to two probe and nected with e measured er supply is production, scilloscope company he peak and lloscope is aveform ved that the . Figure 13 WM driver utput of a Through the form of the ng the time me, and the maller, the uirements. ign of Numerical Control Volta Figure Figur F 5 CONLUS Through data meas can draw measured roughly co press to se voltage, th voltage v voltage, c standard v decrease. T high accur the appear design of when nece good, it is Reference [1] Li Yu issues supply [2] Zhou contro [J]. Unive [3] Zhao J 2005,0 age Source in P e A PWM micro re B Peak value igure 13 Output ION h the power urement and w: voltage LM317 outp onsistent with et the voltage he error is w value, meas can be the value near a The power so racy in the la rance and eas its appearanc essary, can tak easy to repair s uhui. Researc of the CNC y [J]., Zhejiang Gongming. ol power suppl Journal o rsity.2012,5. Jun. The deve 05:13-16. Practical Produc ocontroller outp of pulse voltag t waveform dete of the powe debugging ex control vol put voltage c h linear varia e value, meas within 1%, re surement fee voltage sta range, not t ource can be u aboratory, in o sy to carry, w ce, put it into ke out the use ir. ch on the de system of AC g University, 2 The design ly based on A of Mianya elopment of [J ction 7 put a wave ge for 20V ection er of multiple xperience, we ltage output change trend ation, and key sure its outpu eached the se edback back ability in the to increase o used in a very order to make we increase the o a small box e, which is no esign and key C / DC powe 2004 of numerica AT89S51 MCU ang Norma J]. technology 7 e e t, d, y ut et k e or y e e x, ot y er al U al y
The English Proceedings of the College of Insrumenation&Electrical Engineering.Jin University.in the Second Half of 2015 [4]left x g.Based on DC voltage source AVR microcontroller design of microcomputer and application.2012. [5]Li Shuo.Design and research of remote wireless monitoring system [J].Nankai University,06 8
The English Proceedings of the College of Instrumentation & Electrical Engineering, Jilin University, in the Second Half of 2015 8 [4] left x g. Based on DC voltage source AVR microcontroller design of [J]. microcomputer and application, 2012, [5] Li Shuo. Design and research of remote wireless monitoring system [J]. Nankai University, 2006
Pang Shuo anti-the lock racking syste Intelligent anti-theft lock racking system Pang Shuo;Qujian Fu,Miaolan L (College of Instrumentation and Electrical Engineering.Jilin University.Changchun 130022.China) Abstract-An intelligent anti-theft lock tracking system which can fix position automatically was designed.The single chip omputer STC12C5A60S2 is chosen as main controller.and the system is composed of lcd display module.sound ight alar module,GSM communication module,GPS module, module and other When the bike is moved by stranger,the sound light alarm module will take and the position where the bike wa moved will be fixed using GPS module,meanwhile,the location information will be transformed to the owner through short message by GSM module.The test results show that system position error is less than 5 meters and the information updating rate is less than 0.2timers/minute. module via GSM communications module will I.INTRODUCTION transmit location information to the owners of the hands,to achieve security objectives.The overall WrH the increasing of social material wealth and the system block diagram and overall flow chart in Figure s one of 1,Figure2. the most of the mode walk LCD dioplay modale life,anti-theft alarm is essential,especially the anti-theft lock function The traditional mechanical lock because of its simple structure.single function security is very low,The electronic lock ov ercomes the draw back of me safety performance is poor,high confidentiality,use flexibility is good THIS design increases the GSM module on the basis of electronic lock.GPS positioning module and accelerometer module design smart security lock Wherein the lock module has a key input display input error,control alarm,change passwords and othe OPS P functions:acceleration modules and GPS positioning module can sense when the car is stolen the car to move and achieve positioning:GSM communication text messages to notify the owner Fig The overall flow chart structure of the syster achieve accurate positioning stolen,to ensure the safety of the car. III MODULE DESIGN IL PROCEDURE FOR PAPER SUBMISSION Intelligent anti-theft lock tracking system uses a modular design,the system consist of a Intelligent anti-theft lock tracking system[1-2] module,lock the module,the acceleration module controller and the functional modules as the core. GPS positioning module and a GSM module,al Realize the functions correctly when password lock is modules focused on a circuit board,with each other open,all the anti-theft alarm functions are shut down. through various modules together to achieve security alarm function moving.the acceleration sensoracceleration modul change.this time to obtain location information GPS This system uses STC12C5A60S2 microcontroller
Pang Shuo etc.: Intelligent anti-theft lock racking system 9 Intelligent anti-theft lock racking system Pang Shuo; Qujian Fu; Miaolan Li (College of Instrumentation and Electrical Engineering, Jilin University,Changchun 130022,China) Abstract-An intelligent anti-theft lock tracking system which can fix position automatically was designed. The single chip microcomputer STC12C5A60S2 is chosen as main controller. And the system is composed of LCD display module, sound -light alarm module, GSM communication module, GPS module, acceleration module and some other function modules. When the bike is moved by stranger , the sound light alarm module will take effect, and the position where the bike was moved will be fixed using GPS module, meanwhile, the location information will be transformed to the owner through short message by GSM module. The test results show that system position error is less than 5 meters and the information updating rate is less than 0.2timers/minute. I.INTRODUCTION WITH the increasing of social material wealth and the people living standard rise, security becomes one of the most concern of the modern people.In all walks of life, anti-theft alarm is essential, especially the anti-theft lock function.The traditional mechanical lock because of its simple structure, single function, security is very low;The electronic lock overcomes the drawback of mechanical lock safety performance is poor, high confidentiality, use flexibility is good. THIS design increases the GSM module on the basis of electronic lock, GPS positioning module and accelerometer module design smart security lock. Wherein the lock module has a key input display, input error, control alarm, change passwords and other functions; acceleration modules and GPS positioning module can sense when the car is stolen the car to move and achieve positioning; GSM communication module can send text messages to notify the owner to achieve accurate positioning stolen, to ensure the safety of the car. II．PROCEDURE FOR PAPER SUBMISSION Intelligent anti-theft lock tracking system[1-2] controller and the functional modules as the core. Realize the functions correctly when password lock is open, all the anti-theft alarm functions are shut down; if password or password input error when the car is moving, the acceleration sensor acceleration module change, this time to obtain location information GPS module via GSM communications module will transmit location information to the owners of the hands, to achieve security objectives. The overall system block diagram and overall flow chart in Figure 1, Figure 2. Fig.1 The overall structure of the system Fig.2 The overall flow chart structure of the system III MODULE DESIGN Intelligent anti-theft lock tracking system uses a modular design, the system consists of a control module, lock the module, the acceleration module, GPS positioning module and a GSM module, all modules focused on a circuit board, with each other through various modules together to achieve security alarm function. A Control Module This system uses STC12C5A60S2 microcontroller
