CN203037872U - Static-state human body detection device - Google Patents
Static-state human body detection device Download PDFInfo
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- CN203037872U CN203037872U CN 201320019803 CN201320019803U CN203037872U CN 203037872 U CN203037872 U CN 203037872U CN 201320019803 CN201320019803 CN 201320019803 CN 201320019803 U CN201320019803 U CN 201320019803U CN 203037872 U CN203037872 U CN 203037872U
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Abstract
The utility model discloses a static-state human body detection device comprising an infrared emission part and an infrared reception part. Infrared receiving tubes are disposed in an infrared reception module, and are combined together to form a frequency selection filter circuit. Output ends of the infrared receiving tubes are respectively connected with an input end of the frequency selection filter circuit. The static-state human body detection device relates to the object space position detection, and can be used to detect a stationary human body in a certain scope. The device is constituted by the infrared emission part and the infrared reception part. According to the utility model, by adopting the multipath scanning way, the blind area scope can be reduced, and the required precision can be reached. The infrared emission part adopts the high frequency pulse way to emit signals, and the infrared reception part can be used to receive the signals having the fixed frequency. The static-state human body detection device is advantageous in that the interference sources such as sunlight and lamplight can be filtered, and the detection sensitivity as well as the detection accuracy can be improved.
Description
Technical field
The utility model relates to a kind of infra-red detection device, particularly a kind of static human sniffer.
Background technology
Human body detection is used very extensive in modern society, a lot of equipment all need to cooperate this type of external equipment ability operate as normal, as the illumination of public passage, the human body detection in the safety monitoring, the induction door in hall etc., in the human body detection product, the general technology that adopts has pyroelectricity detection, microwave sounding, infrared correlation to survey three kinds of modes at present.
The pyroelectricity mode: the ordinary people knows from experience the specific wavelength infrared ray about emission 10 μ m, just whether can survey this ultrared existence targetedly with custom-designed sensor, when human body infrared shine on the sensor after, because pyroelectric effect will outwards discharge electric charge, subsequent conditioning circuit just can produce control signal after surveying processing.This sensor probe is sensitive for infrared radiation about 10 μ m to wavelength only, so other objects except human body can not cause probe action.The pyroelectricity unit that comprises two mutual serial or parallel connections in the probe, and two electric polarization directions making are just in time opposite, ambient background radiation is released element to two heat and is almost had identical effect, makes its generation release electrical effect and cancels out each other, so the output of detector no signal.In case in people's intrusion detection zone, human infrared radiation focuses on by partial mirror, and by the reception of pyroelectricity unit, but two heat differences that pyroelectricity unit receives, pyroelectricity is also different, can not offset, so the output detectable signal.
Human infrared sensor is subjected to the interference of various thermals source, light source, radio-frequency radiation easily, its penetration power is also relatively poor, and the infrared radiation of human body is blocked by various objects easily, and when environment temperature and human body temperature near the time, detection sensitivity can obviously descend, and also can cause when serious to survey to lose efficacy.In addition, also the direction of motion relation with the people is very big to the sensitivity of human body for the infrared ray pyroelectric sensor.The infrared ray pyroelectric sensor is least responsive for moving radially reaction, mobile then responsive for transverse direction (namely direction) vertical with radius, selecting suitable installation site at the scene is to avoid infrared probe to report, try to achieve the very important factor of optimal detection sensitivity by mistake, and therefore the limitation when designing and installing and using is bigger.
The microwave sounding mode: microwave sensor is that planar antenna is made induction system based on the microwave Doppler principle, makes a kind of inductor of control with microprocessor.According to Doppler's principle, when the pulsating wave of radar emission one fixed frequency scans sky, as run into moving target, the frequency of echo is poor with the emission wave frequency frequency of occurrences, i.e. Doppler frequency.According to the size of Doppler frequency, can measure target to the radially speed of related movement of radar; According to the mistiming of transponder pulse and reception, can measure the distance of target.Use the Doppler frequency spectral line of the frequency filter method detection of a target simultaneously, the spectral line of filtering interfering clutter can make radar tell echo signal from strong clutter.So pulse Doppler radar is stronger than the anti-clutter interference performance of ordinary radar, can detect hidden moving target in background.Microwave induction controller generally is installed in indoor by the top, corner, axially aligns the door and window position and installs, and outdoor mounted then sensitivity is lower.
Above dual mode all can only be that human body just can detect when mobile, and when human body was static, whether this dual mode all can not detect had human body to exist.
Infrared correlation mode: generally adopt one or more groups infrared emission and receiving trap, and corresponding receiving trap of each emitter, because the emission wire harness of infrared transmitting tube disperses, being tapered disperses, so other receiving trap also can receive the signal of non-its corresponding emitter, in order to overcome this problem, can only strengthen two groups of distances between the device, also just strengthen detection blind zone, be not suitable for high-precision detection demand.
The outdoor application of infrared correlation mode is influenced by temperature and sunshine, and the sensitivity meeting of infrared beams decreases.In order to reduce the false alarm that causes thus, each is overlapped with the receiver axis transmitter, the installation limitation is bigger.
More than three kinds of detection modes separately characteristics are arranged, but all be not suitable for the detection of static human, particularly to requiring than higher occasion.
The utility model content
In order to overcome the deficiency of above-mentioned existing infrared detection device technology, the utility model provides a kind of static human sniffer.
The utility model overcomes the above problems the technical scheme that adopts:
The static human sniffer comprises infrared emission parts and infrared receiving-member; Described infrared emission parts comprise: emission element power supply, sweep circuit and infrared transmission module, and described infrared transmission module is made up of infrared driver and some infrared transmitting tubes; Described emission element power supply connects with need feed circuit in the infrared emission parts respectively, the output terminal of sweep circuit connects with infrared driver input end and each infrared transmitting tube input end respectively, and infrared driver output end also connects with each infrared transmitting tube input end respectively; Described infrared receiving-member comprises: the receiving-member power supply, infrared receiving module, signal amplifier, microprocessor and signal output apparatus, described infrared receiving module is made of some infrared receiving tubes, the receiving-member power supply connects with need feed circuit in the infrared receiving-member respectively, the signal amplifier output terminal connects with the microprocessor input end, output end of microprocessor also connects with the signal output apparatus input end, it is characterized in that, be provided with infrared receiving tube in the described infrared receiving module, infrared receiving tube is integrated with selective frequency filter circuit, and the output terminal of infrared receiving tube connects the selective frequency filter circuit input end respectively.
Further, be serially connected with the multichannel frequency mixer between described infrared receiving circuit and the signal amplifier, each selective frequency filter circuit output terminal of infrared receiving module connects with multichannel frequency mixer input end respectively, and the multichannel mixer output connects the signal amplifier input end.
In the infrared emission parts, the emission element power supply adopts the 5V standard DC power supply, be each circuit supply in the parts, because system works is at the high frequency state, so power supply must be stablized, ripple factor is little, self must be with filtering circuit, prevents that miscellaneous equipment from disturbing this device, avoids this device transponder pulse to disturb miscellaneous equipment simultaneously.
The signal that transmits and receives of infrared transmission module and infrared receiving module adopts the 38kHz fixed frequency carrier wave that can prevent other interference of light sources such as light, sunshine.
Whether the static human sniffer can accurately detect the existence of human body in the certain space scope, when having detected human body in the space, no matter be dynamically or static state, all can output signal, use for miscellaneous equipment.
Infrared transmitting tube adopts timesharing scanning radiation pattern.
Sweep circuit is realized by microprocessor, adopts 8 51 kernel single-chip microcomputers, and main effect provides the signal source of scanning, carries out sweep signal output according to the quantity of infrared correlation, controls each infrared transmitting tube with the timesharing scan mode, by fixedly time slot circulation emission.As set and be launch time of power valve and interval time 10ms, the commencing signal source transfers to first via power valve with the carrier frequency of 38kHz, stop first via power valve is powered through behind the 10ms, begin the second road power valve is powered after suspending 10ms, the same carrier frequency that adopts 38kHz, emission 10ms also suspends 10ms, continue to transfer to next road power valve then, to the last riches all the way penetrates pipe, then again from first via power valve, control each power valve in an identical manner and launch successively, be circulated to last road power valve, go round and begin again.The clock signal of microprocessor is provided by crystal oscillator, requires stability high, and temperature effect is little, guarantees the stability of time, can adopt the 22.1184M crystal oscillator.
The effect of infrared driver is for each infrared transmitting tube provides bigger driving force, because the driving force of microprocessor is very little, can not satisfy the emissive power requirement, must increase driving circuit.
Infrared transmitting tube can adopt the infrared transmitting tube of 940nm, common astigmatic type.
In the infrared receiving-member, the receiving-member power supply adopts the 5V standard DC power supply, be each circuit supply in the parts, because system works is at the high frequency state, so power supply must be stablized, ripple factor is little, self be with and be with filtering circuit, prevent that miscellaneous equipment from disturbing this device, avoid this device transponder pulse to disturb miscellaneous equipment simultaneously.
Infrared receiving module and selective frequency filter circuit realize that infrared ray receives, and adopt integrated infrared receiving tube, only the Infrared of 38kHz are reacted, and the light source of sunshine, light is failure to actuate.
Each signal stack that the multichannel frequency mixer will receive is synthetic, and when a certain road light was subjected to blocking, wherein No. one receiving tube did not just have signal output, and a breach will appear in the signal after the stack, and the composite signal that will superpose inputs to microprocessor.
Microprocessor adopts 8 51 kernel single-chip microcomputers, and its effect is that signal is handled.If there is not human body to block, the synthetic signal of stack can be always the pulse signal of a 10ms, if there is human body to block, breach will occur, when microprocessor detects this breach, judge, some undesired signals that might occur of filtering, when breach reaches some, produce actuating signal, and the time of control action signal.The clock signal of microprocessor is provided by crystal oscillator, requires stability high, and temperature effect is little, guarantees the stability of time, can adopt the 22.1184M crystal oscillator.
Whether signal output apparatus is handled the detected actuating signal of microprocessor, exports to miscellaneous equipment, uses for miscellaneous equipment, have human body to exist because only detect, and often opens or normally closed signal gets final product so only need export.
Should the spacing of arranging between each infrared transmitting tube can be set according to the testee size, and the spacing of arranging between each infrared receiving tube, its spacing can not be greater than testee, otherwise can the blind area occur and can't survey.
Further, the detection method of static human sniffer of the present utility model provides a kind of stationary body detection method that effectively dynamically reaches, its application is not limited only to the detection to human body, according to different detected object and environment, satisfactory sniffer is designed in the adjustable parameters setting.May further comprise the steps:
Step 1: sweep circuit is controlled infrared driver and each infrared transmitting tube, launches some bundle infrared signals by each infrared transmitting tube of infrared driver drives;
Step 2: each infrared receiving tube receives some bundle infrared signals;
Step 3: infrared receiving-member has judged whether that according to composite signal infrared beam is blocked to processing such as the infrared reception signal in the some roads that receive amplify, the output result of detection.
Further, for the method for human body static instrumentation, in step 1 and the step 2, infrared emission and reception signal adopt the 38kHz fixed frequency carrier wave that can prevent other interference of light sources such as light, sunshine.
Further, method for the human body static instrumentation, in the step 1, each infrared transmitting tube adopts timesharing scanning radiation pattern, avoid launching the light beam that makes infrared receiving tube can't judge whether corresponding infrared transmitting tube simultaneously because of a plurality of power valves and be blocked, and then can't judge whether that human body is between emitter and receiving trap.
Further, for the method for human body static instrumentation, in the step 2, the corresponding a plurality of infrared transmitting tubes of each infrared receiving tube, adopt timesharing to receive the wherein light beam of arbitrary infrared transmitting tube, when keeping every bundle infrared light to be blocked, all can have corresponding infrared receiving tube not receive infrared signal.
Further, in the step 3, the infrared reception signal in each road that infrared receiving module receives carries out frequency-selective filtering, and only the 38kHz carrier signal of the characteristic frequency that infrared transmitting tube is sent is handled.
In the step 3, the infrared reception signal in the some roads behind the frequency-selective filtering is through the multichannel mixing, and all signal stacks are synthetic, generates single channel and receives composite signal.
In the step 3, microprocessor is analyzed the single channel composite signal, obtains result of detection, and exports corresponding signal.
The beneficial effects of the utility model are, are made up of infrared emission parts and infrared receiving-member, by the multi-channel scanning mode, reduce the blind area scope, reach the precision that needs.The infrared emission parts adopt the high-frequency impulse mode to transmit, and infrared receiving-member receives only the signal of fixed frequency, and interference sources such as sunshine, light are filtered, and improve detection sensitivity and degree of accuracy.
Description of drawings
Fig. 1 is the infrared emission modular construction synoptic diagram of static human sniffer of the present utility model;
Fig. 2 is the infrared receiving-member structural representation of static human sniffer of the present utility model;
Fig. 3 is the infrared beams transmitting-receiving synoptic diagram of the utility model embodiment;
Fig. 4 is the synthetic oscillogram of infrared reception of the utility model embodiment;
Fig. 5 is the emission control process flow diagram of the utility model embodiment;
Fig. 6 is the reception control flow chart of the utility model embodiment.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the infrared emission parts for static human sniffer of the present utility model comprise: emission element power supply, sweep circuit and infrared transmission module, and described infrared transmission module is made up of infrared driver and some infrared transmitting tubes; Described emission element power supply connects with need feed circuit in the infrared emission parts respectively, the output terminal of sweep circuit connects with infrared driver input end and each infrared transmitting tube input end respectively, and infrared driver output end also connects with each infrared transmitting tube input end respectively.
The emission element power supply adopts the 5V standard DC power supply, be each circuit supply in the parts, sweep circuit is realized by microprocessor, export the control signal of opening and closing to each infrared transmitting tube, owing to there is not the power amplification of infrared driver, this moment, infrared transmitting tube was not worked, and was loaded on each infrared transmitting tube by the carrier wave of infrared driver with 38kHz, made it launch infrared signal by the program of setting with the timesharing scan mode.
As shown in Figure 2, infrared receiving-member for static human sniffer of the present utility model, comprise: the receiving-member power supply, infrared receiving module, signal amplifier, microprocessor and signal output apparatus, described infrared receiving module is made of some infrared receiving tubes, the receiving-member power supply connects with need feed circuit in the infrared receiving-member respectively, the signal amplifier output terminal connects with the microprocessor input end, output end of microprocessor also connects with the signal output apparatus input end, be provided with infrared receiving tube in the described infrared receiving module, infrared receiving tube is integrated with selective frequency filter circuit, and the output terminal of infrared receiving tube connects the selective frequency filter circuit input end respectively.
Be serially connected with the multichannel frequency mixer between infrared receiving circuit and the signal amplifier, each selective frequency filter circuit output terminal of infrared receiving module connects with multichannel frequency mixer input end respectively, and the multichannel mixer output connects the signal amplifier input end.
Infrared transmission module and infrared receiving module transmit and receive the 38kHz fixed frequency carrier wave that employing can prevent other interference of light sources such as light, sunshine.
The receiving-member power supply adopts the 5V standard DC power supply, be each circuit supply in the parts, infrared receiving tube 27 is used for receiving the infrared signal of emission, after inner selective frequency filter circuit is handled, send the multichannel frequency mixer to, the multichannel frequency mixer superposes each road signal synthetic, send signal amplifier to, signal is amplified shaping, be input to microprocessor again, microprocessor carries out signal according to the mode of program setting and judges identification, amplifies driving output by signal output apparatus after finishing, so that according to output signal, surveying between emitter and the receiving trap, miscellaneous equipment whether exist human body to stop infrared beams in the scope.
As shown in Figure 3, for the infrared receiving/transmission wire harness of static human sniffer of the present utility model is installed signal, infrared emission parts and the parallel installation of infrared receiving-member, the wire harness of each infrared transmitting tube emission all is fan shape, a plurality of power valves have just constituted netted, have reduced the blind area, according to the precision of surveying, design the spacing of arranging between spacing and each infrared receiving tube of arranging between each infrared transmitting tube, guarantee the accuracy of surveying.
The detection method of static human sniffer of the present utility model, a kind of stationary body detection method that effectively dynamically reaches is provided, and its application is not limited only to the detection to human body, according to different detected object and environment, adjustable parameters arranges, and designs satisfactory sniffer.May further comprise the steps:
Step 1: sweep circuit is controlled infrared driver and each infrared transmitting tube, launches some bundle infrared signals by each infrared transmitting tube of infrared driver drives;
Step 2: each infrared receiving tube receives some bundle infrared signals;
Step 3: infrared receiving-member has judged whether that according to composite signal infrared beam is blocked to processing such as the infrared reception signal in the some roads that receive amplify, the output result of detection.
Further, for the method for human body static instrumentation, in step 1 and the step 2, infrared emission and reception signal adopt the 38kHz fixed frequency carrier wave that can prevent other interference of light sources such as light, sunshine.
Further, method for the human body static instrumentation, in the step 1, each infrared transmitting tube adopts timesharing scanning radiation pattern, avoid launching the light beam that makes infrared receiving tube can't judge whether corresponding infrared transmitting tube simultaneously because of a plurality of power valves and be blocked, and then can't judge whether that human body is between emitter and receiving trap.
Further, for the method for human body static instrumentation, in the step 2, the corresponding a plurality of infrared transmitting tubes of each infrared receiving tube, adopt timesharing to receive the wherein light beam of arbitrary infrared transmitting tube, when keeping every bundle infrared light to be blocked, all can have corresponding infrared receiving tube not receive infrared signal.
Further, for the method for human body static instrumentation, in the step 3, the infrared reception signal in each road that infrared receiving module receives carries out frequency-selective filtering, and only the 38kHz carrier signal of the characteristic frequency that infrared transmitting tube is sent is handled.
In the step 3, the infrared reception signal in the some roads behind the frequency-selective filtering is through the multichannel mixing, and all signal stacks are synthetic, generates single channel and receives composite signal.
In the step 3, microprocessor is analyzed the single channel composite signal, obtains result of detection, and exports corresponding signal.
As shown in Figure 4, waveform for the infrared reception of static human sniffer of the present utility model, transmitted waveform is the pulse scanning mode, under the situation of not blocking, the waveform that receives after synthesizing is the pulse of uniform 10ms width, and when human body blocked Infrared, a certain road signal will be lost, receive synthetic waveform this moment and breach greater than 10ms will occur, whether system just can judge according to this breach and exist human body to stop infrared beams.
As shown in Figure 5, for static human of the present utility model is implemented the emission control flow process, after the start of infrared emission parts, the microprocessor of sweep circuit begins to carry out from the master routine entrance, at first set timer, starting condition such as pin, enter emission state then, control first via infrared transmitting tube carries out the emission that duration is 10ms, and the carrier wave by infrared driver load 38kHz is to this power valve, suspend 10ms afterwards, again the second road power valve is carried out same operation, so each road power valve is carried out the emission control of timesharing scan mode, after last road power valve scanning emission is finished, suspend 10ms, begin the emission control that circulates from first via power valve again.
As shown in Figure 6, reception control flow for static human sniffer enforcement of the present utility model, after the infrared receiving-member start, microprocessor is at first set timer, starting condition such as pin, enter accepting state then, each infrared receiving tube in the infrared receiving module detects the reception infrared signal in real time, after handling, selective frequency filter circuit transfers to the multichannel frequency mixer, handle through signal amplifier again, transfer to microprocessor, judge whether the stack composite signal that receives breach occurs, scan emission because emission element is the pulse by 10ms, just have the breach of a 10ms so composite signal is every through 10ms, if there is not human body to shut out the light, the time of timer can be 10ms only, returns master routine and continues to detect; If there is the breach greater than 10ms in composite signal, then namely showing to have human body to block infrared beams greater than 10ms the timer time, in order to eliminate maloperation, to judge really have human body to block infrared beams more than 3 times just need be consecutively detected, the program output signal, carry out subsequent operation for miscellaneous equipment, if human body exists, then continue output signal, leave up to human body, after receiving infrared-ray Shu Huifu is normal, stop output signal, return master routine, continue to detect.
The existence that can accurately detect human body by the utility model in the certain space scope whether.When having detected human body in the space, no matter be dynamically or static state, all can output signal, use for miscellaneous equipment.The application of this method is not limited only to the detection to human body, according to different detected object and environment, can adjust relevant parameter, designs satisfactory sniffer.
Claims (3)
1. a static human sniffer comprises infrared emission parts and infrared receiving-member; Described infrared emission parts comprise: emission element power supply, sweep circuit and infrared transmission module; Described infrared transmission module is made up of infrared driver and some infrared transmitting tubes; Described emission element power supply connects with need feed circuit in the infrared emission parts respectively, the output terminal of sweep circuit connects with infrared driver input end and each infrared transmitting tube input end respectively, and infrared driver output end also connects with each infrared transmitting tube input end respectively; Described infrared receiving-member comprises: receiving-member power supply, infrared receiving module, signal amplifier, microprocessor and signal output apparatus; Described infrared receiving module is made of some infrared receiving tubes, the receiving-member power supply connects with need feed circuit in the infrared receiving-member respectively, the signal amplifier output terminal connects with the microprocessor input end, output end of microprocessor also connects with the signal output apparatus input end, it is characterized in that, be provided with infrared receiving tube in the described infrared receiving module, infrared receiving tube is integrated with selective frequency filter circuit, and the output terminal of infrared receiving tube connects the selective frequency filter circuit input end respectively.
2. static human sniffer as claimed in claim 1, it is characterized in that, be serially connected with the multichannel frequency mixer between described infrared receiving module and the signal amplifier, each selective frequency filter circuit output terminal of infrared receiving module connects with multichannel frequency mixer input end respectively, and the output terminal of multichannel frequency mixer connects the signal amplifier input end.
3. static human sniffer as claimed in claim 1 is characterized in that, the signal that transmits and receives of described infrared transmission module and infrared receiving module adopts the 38kHz fixed frequency carrier wave that can prevent light, other interference of light sources of sunshine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019803 CN203037872U (en) | 2013-01-15 | 2013-01-15 | Static-state human body detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320019803 CN203037872U (en) | 2013-01-15 | 2013-01-15 | Static-state human body detection device |
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| CN203037872U true CN203037872U (en) | 2013-07-03 |
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| CN 201320019803 Expired - Fee Related CN203037872U (en) | 2013-01-15 | 2013-01-15 | Static-state human body detection device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091725A (en) * | 2013-01-15 | 2013-05-08 | 四川辰星电子有限公司 | Static human body detecting device and static human body detecting method |
| CN109445332A (en) * | 2018-10-24 | 2019-03-08 | 杭州尚朴投资有限公司 | A kind of detection system and method for gate passage |
| CN112666629A (en) * | 2020-12-26 | 2021-04-16 | 四联优侍科技养老产业有限公司 | Toilet human body monitoring method based on composite sensor |
-
2013
- 2013-01-15 CN CN 201320019803 patent/CN203037872U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091725A (en) * | 2013-01-15 | 2013-05-08 | 四川辰星电子有限公司 | Static human body detecting device and static human body detecting method |
| CN103091725B (en) * | 2013-01-15 | 2015-10-28 | 四川辰星电子有限公司 | Static human sniffer and detection method thereof |
| CN109445332A (en) * | 2018-10-24 | 2019-03-08 | 杭州尚朴投资有限公司 | A kind of detection system and method for gate passage |
| CN112666629A (en) * | 2020-12-26 | 2021-04-16 | 四联优侍科技养老产业有限公司 | Toilet human body monitoring method based on composite sensor |
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Granted publication date: 20130703 Termination date: 20160115 |
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