CN1312050A - Distributed electromagnetic body motion detector - Google Patents
Distributed electromagnetic body motion detector Download PDFInfo
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- CN1312050A CN1312050A CN 00102805 CN00102805A CN1312050A CN 1312050 A CN1312050 A CN 1312050A CN 00102805 CN00102805 CN 00102805 CN 00102805 A CN00102805 A CN 00102805A CN 1312050 A CN1312050 A CN 1312050A
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Abstract
The distributed electromagnetic detection equipment for human body activity is comprised of transmitter, receiver, control and signal processing hardware circuit, computer and equipment system software, in which the control and signal processing hardware circuit includes chiop microprocessor, oscillator, transmitting electronic switch, transmitting power amplifier, receiving electronic switch, receiving signal amplifier, detector, receiving signal zero setting, A/D converter, serial interface and power supply. Said mainframe computer is used for providing power supply,and utilizes RS 232 asynchronous communication interface to communicate with control and signal processing hardware circuit, and its system software includes chip microprocessor control software and mainframe computer software.
Description
The present invention is a kind of distributed electromagnetic body motion detector, belongs to electronic technology field.
Along with engineering bionics, sports medical science, the development of robot control and large scale network virtual reality technology presses for the microminiaturization of body motion detector, passiveization and precision.Existing body motion detector has following several: the first, the fixing various visual angles synthesizer in the visual field, generally absorb live body motion video from different perspectives, again according to certain spatial relationship reconstitution movement process by the CCD camera lens that distributes in the particular space.It two is to utilize ultrasound wave, and infrared light involves the three-point positioning method of radio magnetic wave in the fixed transmission position, determines the motion absolute coordinate of live body; It three is to utilize in the physical change human body motion of machinery and detecting element characteristic, relative motion relation between each motion limbs, as strain chip distribution angle sensor-based system, fiber data clothing, data glove (this also is present popular live body motion detection apparatus); It four is to utilize acceleration transducer and inertial navigation system combination, constitutes six degree of freedom locus pick off.The above two shortcoming is that the sporter must be in the particular environment, and both shortcomings of back are that the sporter must adhere to or dress complicated checkout equipment.In addition, fiber data clothing and fiber data glove etc. involves great expense, and the application of system is restricted.
The distributed body motion detector of a kind of electromagnetism of the present invention its objective is: can remedy the defective of existing live body motion detection apparatus, satisfy requirement of engineering, this device is manipulated simple and convenient, and the cost cost is lower.
The present invention is a kind of distributed electromagnetic body motion detector, and this device claims emitter 1, wireless receiving coil to claim calculate (PC) 4 and device software of receptor 2, control and signal processing hardware circuit 3, main frame to form by the wireless transmit coil of plurality of fixed on people's limbs;
This emitter 1 comprises nylon wire ring framework 11 and enamel-covered wire 12, and enamel-covered wire twines 12 on skeleton 11, constitutes air core coil;
This connects spooler 2 and comprises polyamide skeleton 21, enamel-covered wire 22 and resonant capacitance 23, and enamel-covered wire 22 is wrapped on the skeleton 21, constitutes air core coil, and it is as resonant inductance, and resonant capacitance 23 is in parallel with resonant inductance, constitutes to receive resonance circuit;
This control and signal processing hardware circuit 3 partly are made up of single-chip microcomputer 31, agitator 32, emission electron switch 33, emission power amplifier 34, reception electrical switch 35, receiving signal amplifier 36, detection 37, received signal zeroing 38, A/D conversion 39, serial ports and power supply 40 etc.; Its annexation is:
Single-chip microcomputer 31 connects serial ports and power supply 40 respectively, connect A/D conversion 39, connect emission electron switch 33, connect and receive electrical switch 35, agitator 32 connects emission electron switch 33 respectively, connect detection 37, emission electron switch 33 connects emission power amplifier 34, the emission merit is sent out 34 and is connected emitter 1, A/D conversion 39 connects received signal zeroing 38, received signal zeroing 38 connects detection 37, detection 37 connects receiving signal amplifier 36, receiving signal amplifier 36 connects reception electrical switch 35, receive electrical switch and connect receptor 2, serial ports and power supply 40 connect master computer 4 respectively; Wherein:
The major function of single-chip microcomputer 31 is the right selection of control emitter and receptor, A/D conversion 39 controls, received signal Filtering Processing and with the communication of master computer 4 etc., and these functions are all realized by sampling software;
Receiving electrical switch 35 is single pole multiple throw, and multichannel is entered (way is by the decision of detection angles quantity) single channel road and gone out, and electrical switch 33,35 conductings are selected by single-chip microcomputer 31 controls;
Receiving signal amplifier 36 is common operational amplifier, 10 times of amplifications;
Received signal zeroing 38 remains between the 0-5V received signal;
A/D conversion 39 is converted to digital signal with the signal that receives, and requires A/D conversion 39 to adopt successive approximation conversion, and resolution 12bit is about conversion speed 10 μ s;
This main frame (PC) 4 that calculate is used to provide hardware plate power supply, and by RS232 asynchronous communication mouth and the communication of hardware plate, the data of device detection carried out image reconstruction, shows the human motion process in real time;
The systems soft ware mastery routine of this device is made up of two parts:
One. the Single-chip Controlling software in emission, the reception hardware circuit, its effect mainly is timesharing control emitter and the right selection of receptor, simultaneously, measured signal is carried out Filtering Processing eliminate interference, send information to main frame by RS232 serial ports 40 again and calculate 4;
Two, host computer software, its major function are that the signal that will receive carries out image reconstruction, show the kinestate of measured target on screen in real time.
This Unit Installation and work process are as follows: 1. install
● the measurement of angle of bend between adjacent limbs.Emitter 1 and receptor 2 are installed on respectively
On the adjacent limbs, make tested folder between the axis angle of emitter 1 and receptor 2 and limbs
The angle overlaps, and both distances should change between 15cm-30cm in the motor process.
● the measurement of the windup-degree of same limbs.Emitter 1 and receptor 2 are installed on respectively
On the diverse location of tested limbs, the angle that makes emitter 1 and the axis of receptor 2 with
The windup-degree of limbs overlaps, and both distances are 10cm-20cm.
● the measurement of angle of bend and windup-degree can time sharing shared emitter 1 or receptor 2, sees
Embodiment.
● control and signal processing hardware circuit 3 are made a box body, and the measured can carry, can
Hang between waist or be put in the pocket, link to each other with master computer by serial interface cable.2. work process
Open the master computer power supply, move mastery routine, just can show measured's kinestate on the computer in real time.A kind of distributed electromagnetic body motion detector of the present invention, its advantage and unique distinction are:
1. utilize micro radio to transmit and receive relative angle between device human body motion limbs, make motion detection process break away from the influence of surrounding, with conventional electromagnetic body motion detector by fixing high-power emission, the thinking that the measured only installs receptor is essentially different.
The data volume of surveying little and directly perceived, do not need to carry out complicated coordinate transform processing, thereby, strengthened the real-time that device detects, simplified the subsequent processes that main frame is calculated.
3. little, in light weight, the low price of this device volume, measuring speed and precision can satisfy general industrial and commercial requirement.
The present invention has following accompanying drawing: Fig. 1 a. emitter structures and Parameter Map Fig. 1 b. receiver architecture and Parameter Map Fig. 2. and distributed electromagnetic body motion detector functional-block diagram Fig. 3 a. transmitting oscillator circuit diagram 3b. electron emission on-off circuit Fig. 3 c. receives electronic switching circuit Fig. 3 d. emission power amplifier Fig. 4 a. and receives signal amplification circuit Fig. 4 b. receiving signal zero circuit Fig. 5 a. reception signal demodulator circuit diagram 5b. reception signal circuit debugging oscillogram 6.A/D change-over circuit Fig. 7. serial ports and power circuit diagram 8. device flow chart Fig. 9 of major software. device data acquisition software flow chart Figure 10. the position installation diagram 11. single armed motion detection transmitters of single armed motion detection transmitter and receiver and receiver timesharing detection sequential chart Figure 12. single armed motion detection momentary status Figure 13 a, b, c control and signal processing hardware circuit figure. Number in the figure is as follows:1. transmitter 11. transmitter polyamide skeletons 12. transmitter enamel-covered wires 2. receivers 21. receiver polyamide skeletons 22. receiver enamel-covered wires 23. receiver resonant capacitances 3. are controlled and signal processing hardware circuit 31. single-chip microcomputers, (CPU) 32. oscillators, 33. electron emission switches 34. emission power amplifiers 35. receive that electronic switches 36. receiving signal amplifiers 37. detections 38. receiving signals zero 39.A/D changes 40. serial ports and power supply 4. main frames are calculated, (PC)
Now conjunction with figs. is described in detail as follows:
The present invention is a kind of distributed electromagnetic body motion detector, claim emitter 1, wireless receiving coil to claim receptor 2 by several wireless transmit coils that are fixed on people's limbs, calculate (PC) 4 and apparatus system software of control and signal processing hardware circuit 3, main frame is formed;
Emitter 1: emitter is an air core coil among the present invention, its physical dimension as shown in Figure 1a, the outer diameter of polyamide skeleton 11 is 15mm, internal orifice dimension is 8mm, the endoporus external diameter is 10mm.The enamel-covered wire 12 in line footpath 0.11 on the skeleton 11 about 300 circles, coil internal resistance 40 Ω.
Receptor 2: receptor 2 is the LC circuit that all shake among the present invention, the physical dimension of its coil is shown in Fig. 1 b, the parameter of polyamide skeleton 21 and enamel-covered wire 22 is identical with emitter 1, coil turn is about 400 circles, coil internal resistance 50Q, resonant capacitance 23 is about 6300pf, and the selection of the resonance coil number of turn and resonant capacitance value should be selected according to the frequency of oscillation of agitator 32, and the user can make by oneself according to practical situation.
This control and signal processing circuit 3 are shown in Figure 13 a, b, c, and this hardware circuit includes single-chip microcomputer 31, agitator 32, emission electron switch 33, emission power amplifier 34, receives partly composition such as electrical switch 35, receiving signal amplifier 36, detection 37, received signal zeroing 38, A/D conversion 39, serial ports and power supply 40; Wherein:
Single-chip microcomputer 31: select existing product for use, model is the 89C51 single-chip microcomputer, has FLASH ROM4K word on the sheet, and it is connected as shown in Figure 2 with peripheral hardware.
Agitator 32: produce square-wave signal, dutycycle is 50%, and frequency 100KHZ is made of crystal oscillator and six reverser CD4069 existing products, shown in Fig. 3 a, produces transmitting of emitter.
Emission electron switch 33: the present invention is a distribution detection device, and device has only an agitator generation to transmit, and each emitter, receptor timesharing gating carry out angular surveying, so, by emission electron switch 33 each emitter of timesharing gating.Emission electron switch 33: select existing product for use, model is max4581, and gating time and order are realized by three I/O mouth control gating end ABC of single-chip microcomputer 31, shown in Fig. 3 b.
Receive electrical switch 35: transmitting chooses through receptor 2, again through receiving electrical switch 35, the corresponding receptor 2 of timesharing gating, receive electrical switch 35 and select existing product for use, model is max4581, gating time and order are realized by single-chip microcomputer 31 control gating end ABC, shown in Fig. 3 c.
Emission power amplifier 34: the power that transmits is 200mW, selects existing product for use, and model is that ULN2003 makes power amplifier, shown in Fig. 3 d.
Receiving signal amplifier 36: received signal is amplified 10 times, and circuit is shown in Fig. 4 a, and LF347 constitutes by existing product.
Received signal zeroing 38: adjust the received signal scope, make it be in 0-5V, shown in Fig. 4 b.
Detection 37: select existing gate-controlled switch for use, model is that CD4066 and sampling hold circuit are formed, shown in Fig. 5 a, and on-off control end A, B is controlled by the level of square-wave oscillator, when square wave is in positive half cycle, switch A conducting, switch B ends; When square wave was in negative half period, switch A ended, switch B conducting, and the each point waveform is shown in Fig. 5 b.
A/D conversion 39: adopt successive approximation type a/d converter, resolution 12bit, speed 10 μ s select existing product for use, and model is max144, as shown in Figure 6.
Serial ports and power supply 40: single-chip microcomputer 31 is by two I/O mouth TXD, RXD, realize and calculate 4 communication of main frame by electrical level transferring chip max3222 through the RS232 asynchronous communication, simultaneously, the power supply of entire circuit plate is all provided as shown in Figure 7 by serial interface cable by PC, have two groups ± 12VH and ± 5V.
Master computer 4: select 586 for use, the computer of the above internal memory of 16M gets final product.
Device software flow process such as Fig. 8, shown in Figure 9.Fig. 8 carries out image reconstruction for the calculate software of PC of main frame with adopting data, realizes that screen shows the human motion process in real time.Fig. 9 is the data acquisition software of single-chip microcomputer 31, realizes emitter, the right timesharing sequential control of receptor, and CH is a port number among the figure.
Embodiment is the single armed motion detection apparatus, and Figure 10 is the installation diagram of emitter, receptor, and the detection of each emitter, receptor is defined as follows among the figure:
1---the wrist flexion transmitting coil
2---wrist flexion and forearm distortion receiving coil
3---little brachiocylloosis and distortion transmitting coil
4---little brachiocylloosis and big arm distortion receiving coil
5---big arm distortion and big arm aggregate motion transmitting coil
6---the big arm receiving coil that moves both vertically
7---big arm horizontal movement receiving coil
8---pick off (coil) fixing band
Emission, reception timesharing order need three emitters as shown in figure 11 altogether, four receptors, and every 40ms detects an action, and constantly detection arm motion state moves in circles.
Figure 12 is an effect that detects moment, and the actual act of the arm that prospect is behaved among the figure is according to the arm action attitude that detects data reconstruction on the background computer.Obviously, device detects respond well.
Claims (2)
1, a kind of distributed electromagnetic body motion detector is characterized in that: this device claims emitter (1), wireless receiving coil to claim that receptor (2), control and signal processing hardware circuit (3), main frame are calculated (4) and apparatus system software is formed by the wireless transmit coil of plurality of fixed on people's limbs;
This emitter (1) comprises nylon wire ring framework (11) and enamel-covered wire (12), and enamel-covered wire twines (12) on skeleton (11), constitutes air core coil;
This connects spooler (2) and comprises polyamide skeleton (21), enamel-covered wire (22) and resonant capacitance (23), enamel-covered wire (22) is wrapped on the skeleton (21), constitutes air core coil, and it is as resonant inductance, resonant capacitance (23) is in parallel with resonant inductance, constitutes to receive resonance circuit;
This control and signal processing hardware circuit (3) are made up of single-chip microcomputer (31), agitator (32), emission electron switch (33), emission power amplifier (34), reception electrical switch (35), receiving signal amplifier (36), detection (37), received signal zeroing (38), A/D conversion (39), serial ports and power supply (40); Its annexation is: single-chip microcomputer (31) connects serial ports and power supply (40) respectively, connect A/D conversion (39), connect emission electron switch (33), connect and receive electrical switch (35), agitator (32) connects emission electron switch (33) respectively, connect detection (37), emission electron switch (33) connects emission power amplifier (34), the emission merit is sent out (34) and is connected emitter (1), A/D conversion (39) connects received signal zeroing (38), received signal zeroing (38) connects detection (37), detection (37) connects receiving signal amplifier (36), receiving signal amplifier (36) connects reception electrical switch (35), receive electrical switch (35) and connect receptor (2), serial ports and power supply (40) connect master computer (4) respectively;
This main frame is calculated (4), is used to provide power supply, and by RS232 asynchronous communication mouth and control and signal processing hardware circuit (3) communication, the data that device detects is carried out image reconstruction, shows the human motion process in real time;
The systems soft ware mastery routine of this device is made up of two parts:
One. the Single-chip Controlling software in emission, the reception hardware circuit, its effect mainly is timesharing control emitter and the right selection of receptor, simultaneously, measured signal is carried out Filtering Processing eliminate to disturb, send information to main frame calculate (4) by RS232 serial ports (40) again;
Two. host computer software, its major function are that the signal that will receive carries out image reconstruction, show the kinestate of measured target on screen in real time.
2, a kind of distributed electromagnetic body motion detector according to claim 1 is characterized in that: this control and signal processing hardware circuit (3), wherein:
The major function of single-chip microcomputer (31) is the right selection of control emitter (1) and receptor (2), A/D conversion 39 controls, the received signal Filtering Processing reaches and the communication of master computer (4);
Agitator (32) is a square-wave generator, frequency of oscillation 100KHz;
Emission electron switch (33) is a single pole multiple throw, and single channel is advanced multichannel and gone out (way is by the decision of detection angles quantity);
Receiving electrical switch (35) is single pole multiple throw, and multichannel is entered (way is by the decision of detection angles quantity) single channel road and gone out, and emission, reception electrical switch (33), (35) conducting are selected to be controlled by single-chip microcomputer (31);
Receiving signal amplifier (36) is common operational amplifier, 10 times of amplifications;
Detection (37) is made up of gate-controlled switch and sampling hold circuit, two on-off control ends are respectively by the high-low level control of the agitator (32) of transmit square waves, when square wave is in positive half cycle, switch A conducting, switch B ends, sampling holder A keeps, when square wave was in negative half period, switch A ended, switch B conducting, sampling holder B keeps, and obtains the receiving angle signal;
Received signal zeroing (38) remains between the 0-5V received signal;
A/D changes (39), and the signal that receives is converted to digital signal, requires A/D conversion (39) to adopt successive approximation conversion, and resolution 12bit is about conversion speed 10 μ s;
Serial ports and power supply (40), with single-chip microcomputer (31) adopt signal after Filtering Processing, send master computer (4) to by serial ports and power supply (40), simultaneously, the power supply+12V on the hardware plate ,-12V ,+5V ,-5V all provides by master computer (4) by serial interface cable.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB001028057A CN1137661C (en) | 2000-03-06 | 2000-03-06 | Distributed electromagnetic body motion detector |
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| CNB001028057A CN1137661C (en) | 2000-03-06 | 2000-03-06 | Distributed electromagnetic body motion detector |
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| CN1137661C CN1137661C (en) | 2004-02-11 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100421622C (en) * | 2006-06-30 | 2008-10-01 | 中国科学院合肥物质科学研究院 | Distributed human motion link acceleration testing device |
| CN100423694C (en) * | 2006-06-30 | 2008-10-08 | 中国科学院合肥物质科学研究院 | Method for distributed human motion link acceleration testing device |
| CN101394787B (en) * | 2006-03-14 | 2010-06-09 | 索尼株式会社 | Body movement detector, body movement detection method |
| CN102670208A (en) * | 2012-05-15 | 2012-09-19 | 北京大学 | Capacitance sensing system for human body motion modal identification |
| CN102934051A (en) * | 2010-04-08 | 2013-02-13 | 迪士尼企业公司 | System and method for sensing human activity by monitoring impedance |
| CN104751619A (en) * | 2015-04-22 | 2015-07-01 | 蒋憧 | Behavior detection system and method based on distributed sensor |
| CN110558992A (en) * | 2019-07-30 | 2019-12-13 | 福建省万物智联科技有限公司 | Gait detection analysis method and device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100508886C (en) * | 2005-07-26 | 2009-07-08 | 株式会社日立制作所 | Living body inspection apparatus |
-
2000
- 2000-03-06 CN CNB001028057A patent/CN1137661C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394787B (en) * | 2006-03-14 | 2010-06-09 | 索尼株式会社 | Body movement detector, body movement detection method |
| CN100421622C (en) * | 2006-06-30 | 2008-10-01 | 中国科学院合肥物质科学研究院 | Distributed human motion link acceleration testing device |
| CN100423694C (en) * | 2006-06-30 | 2008-10-08 | 中国科学院合肥物质科学研究院 | Method for distributed human motion link acceleration testing device |
| CN102934051A (en) * | 2010-04-08 | 2013-02-13 | 迪士尼企业公司 | System and method for sensing human activity by monitoring impedance |
| CN102934051B (en) * | 2010-04-08 | 2016-05-11 | 迪士尼企业公司 | Carry out sensing people's movable system and method by monitoring impedance |
| US9366706B2 (en) | 2010-04-08 | 2016-06-14 | Disney Enterprises, Inc. | System and method for sensing human activity by monitoring impedance |
| CN102670208A (en) * | 2012-05-15 | 2012-09-19 | 北京大学 | Capacitance sensing system for human body motion modal identification |
| CN102670208B (en) * | 2012-05-15 | 2014-01-29 | 北京大学 | Capacitance sensing system for human body motion modal identification |
| CN104751619A (en) * | 2015-04-22 | 2015-07-01 | 蒋憧 | Behavior detection system and method based on distributed sensor |
| CN110558992A (en) * | 2019-07-30 | 2019-12-13 | 福建省万物智联科技有限公司 | Gait detection analysis method and device |
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