CN103901796A - Three-dimensional magnetic field-based mechanical disability control system - Google Patents
Three-dimensional magnetic field-based mechanical disability control system Download PDFInfo
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- CN103901796A CN103901796A CN201210578019.5A CN201210578019A CN103901796A CN 103901796 A CN103901796 A CN 103901796A CN 201210578019 A CN201210578019 A CN 201210578019A CN 103901796 A CN103901796 A CN 103901796A
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Abstract
The invention relates to a three-dimensional magnetic field-based mechanical disability control system. Three linear Hall sensors are used to form three-dimensional magnetic field measurement for magnetic field intensity measurement, voltage output by the sensors is amplified by an instrument amplifier, amplified analog voltage is converted to digital quantity through an A/D converter, the converted digital quantity is processed by a single-chip microcomputer, and distance between a measured point and the sensors is calculated and displayed on a display. A user can preset safety distance of the measured point through a keyboard, the single-chip microcomputer calculates the safety distance set by the user and distance of actual measurement, and on the basis of a difference value, judges whether to start an alarm and output a brake signal, and a mechanical brake device is controlled after current amplification of the output signal through an output driver to enable power equipment to stop immediately.
Description
Technical field
The present invention is the mechanical disability control system based on three-dimensional magnetic field, be one in equipment, accurate human-body safety protection system.Relate to three-dimensional measurement technology, mechanical braking technology, and Programmable Logic Controller singlechip technology.
Background technology
Have based on rpyroelectric infrared detection system, infrared detection system as detecting system of human body at present, and the detecting system of human body that forms of various sensor, respectively have superiority, respectively there is shortcoming.Infrared detection system comparatively speaking, technology is very ripe, is widely used, but is much needing accurate security control occasion can not reach standard.
Summary of the invention
The object of the present invention is to provide a kind of human-body safety Protection control system.The object that is equipped with magnet is worn in wrist; utilize three-dimensional magnetic field to detect accurately the distance of magnet and sensor; indirectly detect the distance of human body and sensor; in the time that this distance is less than the distance of user's setting; braking equipment is braked plant equipment just in working order at once by force, to protect human-body safety.
Realize by following approach: native system is the mechanical disability control system based on three-dimensional magnetic field, adopt 3 linear hall sensors to form three-dimensional magnetic field measurement (1.) and carried out magnetic field intensity measurement, the voltage of sensor output is amplified by instrument amplifier (2.), analog voltage after amplification converts digital quantity to by A/D converter (3.), and the digital quantity of conversion is processed and calculated the distance of measured point and sensor by single-chip microcomputer (5.) and above shows at display (4.).User can pass through the safe distance of the default measured point of keyboard (6.), the safe distance that single-chip microcomputer arranges user calculates with the distance of actual measurement, taking difference as foundation, judge whether to start alarm (7.) and output brake signal, output signal is undertaken after electric current amplifies controlling mechanical brake device (9.) by exporting driving (8.), and power-equipment is stopped immediately.
The present invention has the following advantages:
1. can accurately measure the distance of measurand and sensor.2. equipment when tested distance is less than settings in braking work at once.Give the alarm simultaneously.
brief description of the drawings:
Below in conjunction with accompanying drawing, the present invention is described in further detail:
Fig. 1 is structured flowchart of the present invention;
Fig. 2, Fig. 3, Fig. 4 are circuit diagram of the present invention.Wherein Fig. 2 is sensor signal processing circuit figure, and Fig. 3 is primary controller and display circuit.Fig. 4 is input and output device driving circuit figure;
Embodiment
As shown in Figure 1,1. in by sensors X, sensor Y, sensor Z, spatially form three-dimension sensor, be respectively U1, U2, U3 in Fig. 2, its model is A1321; After each sensor, having an instrument amplifier 2., is respectively U4, U5, U6 in Fig. 2, and its model is Max4194.
Sensor signal processing circuit as shown in Figure 2, linear hall sensor U1, U2, U3(A1321) 1 pin VCC connects 5V power supply, 2 pin GND connect power supply ground, 3 pin VOUT are sensor signal output terminals, are connected to respectively the 3 pin VIN of U4, U5, U6; Connect between the 1 pin RG-of U4, U5, U6 and the 8 pin RG+ resistance (R1, R2, R3) in 50 Europe, 7 pin VCC are just connecing 5V power supply, 4,5 pin connect power supply ground, 2 pin are signal inversion input ends, respectively by U7, U8, U9(TL431) form mu balanced circuit with R4, R5, R6, R7, R8, R9, R10, R11, R12 5V voltage is stablized accurately to 2.5V and sent into.R4, R5, R6(1K) with U7, U8, U9(TL431) connect, and from U7, U8, U9(TL431) 3 pin power takings press to U4, U5, U6(Max4194) 2 pin.Connected by R7, R8, R9, R10, R11, R12, from intermediate point dividing potential drop to U7, U8, U9(TL431) 2 pin make reference voltage; U7, U8, U9(TL431) 1 pin connect power supply ground; U4, U5, U6(Max4194) 6 pin (VOUT) respectively with Fig. 1 (3.) A/D converter U10(TL431) 1(A0), 2(A1), 3(A2) pin is connected, U10(TL431) 10(RF-), 13(GND) pin connects power supply ground, 14(RF+), 20(VCC) just connecing 5V power supply.15(CS), 16(DOUT), 18(CLK) be connected to respectively the U5(STC89C52RC of Fig. 3 by network label P2.7, P2.6, P2.5) 25(P2.7), 24(P2.6), 23(P2.5) pin.
Primary controller and display circuit as shown in Figure 3, U5(STC89C52RC) 15(XTAL1), 14(XTAL2) a series connection Y1 (12M) crystal oscillator, 15 pin series connection C4(30P) to ground, 14 pin series connection C5(30P) to ground.16 pin (GND) connect power supply ground.18(P2.0), 19(P2.1) be connected to respectively 5 pin (d2), 10 pin (d1) of charactron U7 (SM420362).40,41,42,43,44,1,2,3 pin are data buss, are connected to respectively U6(74HC573) 2,3,4,5,6,7,8,9 pin 38 pin (VCC) just connecing 5V power supply.U6(74HC573) 1 pin is just connecing 5V power supply, and 19,18,17,16,15,14,13,12 pin of this chip are data input pin, is connected to respectively FPDP 3,9,8,6,7,4,1,2 pin of display, and 11 pin connect power supply ground.
As shown in Figure 4,13 is input circuit, is made up of S1, S2 for input circuit and output driving circuit, and they are connected on U5(STC89C52RC by network label respectively) 21(P2.3), 22(P2.4) between pin and power supply ground.15 is warning circuit, and speaker is alarm, and its one end and R9 are just being connected serially to 5V power supply, and other one section is connected to Q2(9012) 1 pin, Q2(9012) 3 pin connect power supply ground.2 pin are connected to the U5(STC89C52RC of Fig. 3 by network label) 10(P3.0) pin.Output driving circuit is as 14 of Fig. 4.This electricity routing optocoupler U8 carries out signal isolated controlling, and resistance R 7 to 5V power supplys of 1 pin series connection of U8 just.2 pin are connected to the U5(STC89C52RC of Fig. 3 by network label) 20(P2.2) pin.3 pin and Q1(IRFZ48) 2 pin be connected, 1 pin of 4 pin resistance in series R8 to Q1.3 pin of Q1 connect power supply ground, and K1 is relay, for controlling the power supply of outside braking equipment.1,2,3,4 of K1 is external switch, is connected to respectively P1(brake interface) 3,2,4,1 pin.6 pin of K1 are just connecing 5V power supply, and 5 pin connect 1 pin of Q1, and the while is at a diode D1(IN4007 of 5,6 pin series connection of K1).
Claims (7)
1. native system is the mechanical disability control system based on three-dimensional magnetic field, adopt 3 linear hall sensors to form three-dimensional magnetic field measurement (1.) and carried out magnetic field intensity measurement, the voltage of sensor output is amplified by instrument amplifier (2.), analog voltage after amplification converts digital quantity to by A/D converter (3.), and the digital quantity of conversion is processed and calculated the distance of measured point and sensor by single-chip microcomputer (5.) and above shows at display (4.).
2. user can pass through the safe distance of the default measured point of keyboard (6.), the safe distance that single-chip microcomputer arranges user calculates with the distance of actual measurement, taking difference as foundation, judge whether to start alarm (7.) and output brake signal, output signal is undertaken after electric current amplifies controlling mechanical brake device (9.) by exporting driving (8.), and power-equipment is stopped immediately.
3. described in right 1, three-dimensional magnetic field detection is to utilize the three-dimensional magnetic field that 3 linear hall sensors spatially form to measure, and its linear hall sensor model is A1321.
4. described in right 1, instrument amplifier model is Max4194.
5. described in right 1, A/D converter model is TLC1543.
6. described in right 1, microprocessor model is STC89C52RC single-chip microcomputer.
7. described in right 1, its model of display is SM420362.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210578019.5A CN103901796A (en) | 2012-12-27 | 2012-12-27 | Three-dimensional magnetic field-based mechanical disability control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210578019.5A CN103901796A (en) | 2012-12-27 | 2012-12-27 | Three-dimensional magnetic field-based mechanical disability control system |
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| CN103901796A true CN103901796A (en) | 2014-07-02 |
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| CN201210578019.5A Pending CN103901796A (en) | 2012-12-27 | 2012-12-27 | Three-dimensional magnetic field-based mechanical disability control system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215167A (en) * | 2014-09-23 | 2014-12-17 | 扬州大祺自动化技术有限公司 | Electronic number displayer |
| CN104864835A (en) * | 2015-05-29 | 2015-08-26 | 安徽康成工业产品设计有限公司 | Anti-wringed injury device for mechanical equipment |
| CN105785289A (en) * | 2016-05-22 | 2016-07-20 | 南宁市茂百科技有限公司 | Portable magnetic-field detector |
| CN109581901A (en) * | 2019-01-21 | 2019-04-05 | 南京达斯琪数字科技有限公司 | A kind of display system |
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| CN2566281Y (en) * | 2002-06-07 | 2003-08-13 | 清华大学 | Three-dimensional digital Hall magnetic field measuring device |
| CN1547521A (en) * | 2001-07-11 | 2004-11-17 | �����˺ʹ��˹�˾ | Power tool safety mechanisms |
| CN201386518Y (en) * | 2009-04-27 | 2010-01-20 | 荆州市元泽石油设备有限公司 | Anti-collision device of continuous oil pipe operation machine |
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| CN1547521A (en) * | 2001-07-11 | 2004-11-17 | �����˺ʹ��˹�˾ | Power tool safety mechanisms |
| CN2566281Y (en) * | 2002-06-07 | 2003-08-13 | 清华大学 | Three-dimensional digital Hall magnetic field measuring device |
| CN201386518Y (en) * | 2009-04-27 | 2010-01-20 | 荆州市元泽石油设备有限公司 | Anti-collision device of continuous oil pipe operation machine |
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| 陈棣湘等: "基于霍尔传感器的高准确度磁场测量方法", 《传感器技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104215167A (en) * | 2014-09-23 | 2014-12-17 | 扬州大祺自动化技术有限公司 | Electronic number displayer |
| CN104864835A (en) * | 2015-05-29 | 2015-08-26 | 安徽康成工业产品设计有限公司 | Anti-wringed injury device for mechanical equipment |
| CN105785289A (en) * | 2016-05-22 | 2016-07-20 | 南宁市茂百科技有限公司 | Portable magnetic-field detector |
| CN109581901A (en) * | 2019-01-21 | 2019-04-05 | 南京达斯琪数字科技有限公司 | A kind of display system |
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Application publication date: 20140702 |