CN201145745Y - Human body infrared induction module - Google Patents
Human body infrared induction module Download PDFInfo
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- CN201145745Y CN201145745Y CNU2007201710361U CN200720171036U CN201145745Y CN 201145745 Y CN201145745 Y CN 201145745Y CN U2007201710361 U CNU2007201710361 U CN U2007201710361U CN 200720171036 U CN200720171036 U CN 200720171036U CN 201145745 Y CN201145745 Y CN 201145745Y
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- human body
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- body infrared
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- infrared induction
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Abstract
The utility model discloses a human body infrared sensing module. The module comprises a low power consumption voltage regulator (6), a pyroelectric sensor (1), a Fresnel lens (2), a processing IC (7) and a low-pass filter which are arranged on the same circuit board, wherein, the Fresnel lens (2) is arranged on the pyroelectric sensor (1), the low power consumption voltage regulator (6) performs the voltage regulation filtering to a direct current power supply, then the direct current power supply is provided to the pyroelectric sensor (1) and the processing IC (7) to work, the pyroelectric sensor (1) senses a signal and then inputs the signal into the processing IC (7) through the low-pass filter, the signal comparison and logic control are carried out after signal amplification, the conversion from signal voltage of the sensor to logic level is realized, and finally the control signal level is output. The human body infrared sensing module can work by directly arranging the power supply after the pyroelectric sensor is subject to the modularization design, is convenient for secondary development of a user, and can be used in fields such as toys, energy-saving electric appliances, safety prevention, and automation and so on. A modular circuit has the power consumption of 50 muA or so and uses the direct current power supply between 4.5 and 20V. The human body infrared sensing module is characterized by small volume, low power consumption, and wide voltage range.
Description
[technical field]
The utility model relates to the pyroelectric sensor applied technical field, relates in particular to human body infrared induction module.
[background technology]
At present, the pyroelectric sensor of each manufacturer production (PIR) small product size is bigger, and power consumption generally all more than tens milliamperes, is mainly used in security product such as infrared probe etc., surveys the mobile generation alarm signal of human body, is powered by the alarm host machine power source special.Pyroelectric sensor is to the variation of ambient temperature sensitivity, the signal amplification circuit components and parts are had relatively high expectations, use pyroelectric sensor except characteristic understanding to sensor itself, the circuit that also will design more complicated just can reach use purpose, use suitable trouble.If production technology or processing of circuit are improper, be easy to produce the misoperation signal, so the operation technique of pyroelectric sensor grasps mainly in relative product producer hand, its application on other products is restricted.
[summary of the invention]
Goal of the invention of the present utility model provides a kind of human body infrared induction module, with the purpose that reaches easy to use, is convenient to secondary development.
To achieve the above object of the invention, the utility model proposes following technical scheme:
A kind of human body infrared induction module, it is characterized in that, this module comprises the LDO Regulator that is arranged at same circuit board, pyroelectric sensor, Fresnel Lenses, processing IC, low-pass filter, described Fresnel Lenses is arranged at pyroelectric sensor, after direct supply carries out voltage regulation filtering through LDO Regulator, offer the work of pyroelectric sensor processing IC, import processing IC through low-pass filter behind the pyroelectric sensor induced signal, through carrying out signal relatively after the signal amplification, logic control, realized exporting the control signal level at last by the conversion of sensor signal voltage to logic level.
Preferably, also be provided with set screw hole, power supply input and signal output port, triggering mode selection port on the described circuit board.
Preferably, described circuit board is 38*28mm or 32*24mm plane rectangle circuit board.
Wherein, described pyroelectric sensor is in the positive center of circuit board; Described Fresnel Lenses is in the positive center of circuit board, and top is that dome-type and bottom are provided with 4 angles.
Wherein, described set screw hole is positioned at the circuit board left and right sides, and diameter is 2 millimeters or 3 millimeters.
Wherein, described power supply input and signal output port are positioned at the positive axle center of circuit board on the lower side, are under the sensor.
Wherein, described triggering mode selects port to be in the upper left corner of module.
Wherein, described module also comprises photoresistance, is located at the circuit board lower left corner or in lens the insides.
Wherein, described LDO Regulator is in the circuit board lower left corner.
Wherein, this module also comprises processing IC and two above electrochemical capacitors, and the one or both sides pin of described processing IC is positioned at the sensor the inside, and described electrochemical capacitor is arranged on the circuit board.
As can be seen from the above technical solutions, the utility model with PIR pyroelectric sensor, Fresnel Lenses, signal amplification and processing IC, set screw hole, power supply input and signal output port, triggering mode select port, photoresistance, LDO Regulator, etc. electronic component be integrated on the circuit board of a 38*28mm or 32*24mm the built-up circuit module.Module dissipation 50uA, use the 4.5-20V direct supply, the signal of sensing can be used as level signal and uses or directly drive appendix, use very simple, and enlarge the pyroelectric sensor range of application, can be widely used in human body sensing toy, induction light fixture, induction energy saving electrical equipment, automatic camera equipment and automatic body induction control device etc.
[description of drawings]
Fig. 1 is the fundamental block diagram of the utility model human body infrared induction module;
Fig. 2 is the physical circuit figure of the utility model human body infrared induction module;
Fig. 3 is the circuit diagram of the utility model human body infrared induction module DC application;
Fig. 4 is the circuit diagram of the utility model human body infrared induction module AC applications;
Fig. 5 is the encapsulation figure of the utility model human body infrared induction module embodiment one;
Fig. 6 is the encapsulation figure of the utility model human body infrared induction module embodiment two.
[embodiment]
Below in conjunction with specific embodiment the technical solution of the utility model is described in detail.
As Fig. 1～shown in Figure 6, human body infrared induction module comprises LDO Regulator 6, pyroelectric sensor 1, signal amplification circuit, processing IC 7, the low-pass filter that is arranged at same circuit board in the utility model:
After direct supply carries out voltage regulation filtering through LDO Regulator 6, offer pyroelectric sensor 1 and signal amplification circuit, processing IC 7 work, be input to processing IC 7 through low-pass filter behind pyroelectric sensor 1 induced signal, amplify passing to signal amplification circuit, enter processing IC 7 afterwards and carry out carrying out logic control after the signal comparison process, and the output control signal.Described pyroelectric sensor 1 is provided with Fresnel Lenses 2, also is provided with set screw hole 3, power supply input and signal output port 4, triggering mode on the described circuit board and selects port 5.
Its course of work and principle are, 4.5-20V direct supply through behind the HT7133 voltage regulation filtering, offering pyroelectric sensor and signal amplifies, processing IC-BISS0001 work, PIR pyroelectric sensor induced signal is through C6, R3 and R6, the low-pass filter that C8 forms is input to 14 pin of IC, carrying out first order signal amplifies, afterwards by C7, R16 and R4, R5 is coupled to IC 13 pin and carries out second level signal amplification, enter the signal comparator of IC inside afterwards, carry out after the signal comparison process in logic controller, the external photoresistance of IC 9 pin also enters in the logic controller, if do not connect photoresistance 9 pin current potential height, when signal was sensed in the pyroelectric sensor sense, logic controller state of a control controller had high level signal to be exported by 2 pin.When the external photoresistance of IC 9 pin, by day or in the bright environment of light, the photoresistance resistance is very little, IC 9 pin current potentials are dragged down, after logic controller collects 9 pin low levels, when signal was sensed in the pyroelectric sensor sense, logic controller was with the output of holddown controller, and 2 pin do not have high level signal output.The high and low level signal of IC 1 pin is also controlled inner state controller, finishes the triggering mode selection function.During the high level of 1 pin, but state controller is operated in the repeated trigger state, and during the low level of 1 pin, state controller is operated in not reproducible triggering state.The high level signal delay time of state controller output is by the R13 and the C14 decision of IC 3,4 pin, and blocking time is by the R12 and the C13 decision of 5,6 pin.7 pin of IC meet VSS, and 11 pin meet VDD.
The electronic module human body of the utility model pyroelectric sensor moves, and adopts pyroelectric sensor and signal amplification circuit to be integrated on the circuit board, uses the low-power consumption application-specific integrated circuit, adopts SMD technology, reduces circuit board and electronic component volume as far as possible.Pyroelectric sensor is arranged at enclosed Fresnel Lenses the inside, and flow air is very little to the influence of pyroelectric sensor, has reduced the signal interference.Module dissipation of the present utility model has only 50uA, and volume is 38*28mm*25mm or 32*24mm*25mm, can be used for products such as induction toy or energy-conservation induction, and the pyroelectric sensor application is further widened.
Human body infrared induction module of the present utility model has characteristics:
1, small size:
Use 1.2mm two-sided glass circuit board, paster and straight cutting components and parts.Finished product module profile 38*28mm*25mm or 32*24mm*25mm.
2, low-power consumption, wide power: direct current 4.5～20V
Low-power dissipation power supply voltage stabilizer HT7133, pressure reduction 60mV, wide power scope-0.3-28V,
3, use simple: power supply+, power supply-, signal, have only three lead-in wires, draw from circuit board with the 2.54mm staight needle, module directly is inserted in connecting line on the circuit board and can uses after fixing.Signal exports external triode or the light lotus root can directly drive load.Module centers line edge is conveniently installed by two 3mm screw holes.As shown in Figure 3, Figure 4, be the DC application circuit diagram and the AC applications figure of the utility model human body infrared induction module.
4, high-low level signal output: moved in sensing range by the people, output 3.3V high level signal is not output as 0V after the people leaves, and circuit application is consulted appended operation instructions
5, L H triggering mode is selected: three staight needles add short-circuit block, the convenient triggering mode of selecting.
Short-circuit block is in the L position: be set at not reproducible trigger mode, if someone moves in sensing range, 3 seconds kinds of high level signal output stop, about 3 seconds kinds detect again at interval, and the people also moves in the survey scope, exporting 3 seconds kinds of high level signal output again stops, so circulation is left sensing range up to the people, and signal is no longer exported.This module factory setting output time and interval time are 3 seconds kinds, and this time can be adjustable in 3～900 seconds, only need to change two component parameters of RC on the circuit board.
Short-circuit block is in the H position: but be set at the repeated trigger pattern, if there is the people in sensing range, to move, 3 seconds kinds of high level signal output, in 3 seconds kinds, also in the survey scope, move the time clear 0 if detect the people again, continue down to delay time 3 seconds, after the people leaves, stop signal output.This module factory setting output time and interval time are 3 seconds kinds, and this time can be adjustable in 3～900 seconds, only need to change two component parameters of RC on the circuit board.
7 induction angles are 110 degree.Can reduce to respond to angle by blocking Fresnel Lenses, the time angle adjustable in the 10-110 degree,
8 distance of reaction: 7 meters,, can make distance of reaction adjustable in 1-7 rice is fixing by changing the gain of circuit board amplifier
The encapsulation figure of the utility model human body infrared induction module such as Fig. 5, shown in Figure 6 are integrated in a circuit board with each components and parts of circuit, and this circuit board is shaped as rectangle, and its size generally can be 38*28mm or 32*24mm.
As shown in Figure 5, the position distribution of each device is among the utility model embodiment one:
Pyroelectric sensor 1 is in the positive center of circuit board;
Fresnel Lenses 2 is in the positive center of circuit board, use to use 38*28mm*25mm plane rectangle circuit board, above the dome-type Fresnel Lenses, 4 angles are arranged at the lens bottom, on one side 19mm, another side 23mm; 4 angles are arranged on the Fresnel Lenses 2, be used for Fresnel Lenses 2 is fixed in circuit board;
Two 3 millimeters set screw holes 3 are positioned at the circuit board left and right sides;
Power supply input and signal output port 4 are positioned at the positive axle center of circuit board on the lower side, are under the sensor;
Triggering mode selects port 5 to be in the upper left corner of module;
Photoresistance is in the circuit board lower left corner or in the lens the inside;
LDO Regulator 6 is in the circuit board lower left corner;
The pin of processing IC 7 one sides is positioned at the lens the inside, and opposite side pin and pyroelectric sensor 1 are close to; Certainly, processing IC 7 also can be arranged at pyroelectric sensor 1 the inside;
As required, also be provided with several electrochemical capacitors on the circuit board.
As shown in Figure 6, the position distribution of each device is among the utility model embodiment two:
Pyroelectric sensor 1 is in the positive center of circuit board;
Fresnel Lenses 2 is in the positive center of circuit board, use to use 32*24mm*25mm plane rectangle circuit board plane square, above the dome-type Fresnel Lenses, 4 angles are arranged at the lens bottom, on one side 19mm, another side 23mm;
Two 2 millimeters set screw holes 3 are positioned at the circuit board left and right sides;
Power supply input and signal output port 4 are positioned at the positive axle center of circuit board on the lower side, are under the sensor;
Triggering mode selects port 5 to be in the upper left corner of module;
Photoresistance is in the circuit board lower left corner or in the lens the inside;
LDO Regulator 6 is in the circuit board lower left corner;
The pin of processing IC 7 one sides is positioned at the lens the inside, and opposite side pin and pyroelectric sensor 1 are close to; Certainly, processing IC 7 also can be arranged at pyroelectric sensor 1 the inside;
As required, also be provided with several electrochemical capacitors on the circuit board.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (10)
1, a kind of human body infrared induction module is characterized in that:
This module comprises the LDO Regulator (6) that is arranged at same circuit board, pyroelectric sensor (1), Fresnel Lenses (2), processing IC (7), low-pass filter, described Fresnel Lenses (2) is arranged at pyroelectric sensor (1), after direct supply carries out voltage regulation filtering through LDO Regulator (6), offer pyroelectric sensor (1) processing IC (7) work, import processing IC (7) through low-pass filter behind pyroelectric sensor (1) induced signal, through carrying out signal relatively after the signal amplification, logic control, realized exporting the control signal level at last by the conversion of sensor signal voltage to logic level.
2, human body infrared induction module according to claim 1 is characterized in that:
Also be provided with set screw hole (3), power supply input and signal output port (4), triggering mode on the described circuit board and select port (5).
3, human body infrared induction module according to claim 2 is characterized in that, described circuit board is 38*28mm or 32*24mm plane rectangle circuit board.
4, human body infrared induction module according to claim 2 is characterized in that, described pyroelectric sensor (1) is in the positive center of circuit board; Described Fresnel Lenses (2) is in the positive center of circuit board, and top is dome-type and base plane square and is provided with 4 angles.
5, human body infrared induction module according to claim 2 is characterized in that, described set screw hole (3) is positioned at the circuit board left and right sides, and diameter is 2 millimeters or 3 millimeters.
6, human body infrared induction module according to claim 2 is characterized in that, described power supply input and signal output port (4) are positioned at the positive axle center of circuit board on the lower side, are under the sensor.
7, human body infrared induction module according to claim 2 is characterized in that, described triggering mode selects port (5) to be in the upper left corner of module.
8, human body infrared induction module according to claim 2 is characterized in that, described module also comprises photoresistance, is located at the circuit board lower left corner or in lens the insides.
9, human body infrared induction module according to claim 2 is characterized in that, described LDO Regulator (6) is in the circuit board lower left corner.
According to each described human body infrared induction module in the claim 2～9, it is characterized in that 10, the one or both sides pin of described processing IC (7) is positioned at the sensor the inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201710361U CN201145745Y (en) | 2007-11-23 | 2007-11-23 | Human body infrared induction module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201710361U CN201145745Y (en) | 2007-11-23 | 2007-11-23 | Human body infrared induction module |
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| Publication Number | Publication Date |
|---|---|
| CN201145745Y true CN201145745Y (en) | 2008-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201710361U Expired - Fee Related CN201145745Y (en) | 2007-11-23 | 2007-11-23 | Human body infrared induction module |
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| CN (1) | CN201145745Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640723B (en) * | 2009-08-18 | 2012-06-13 | 上海华勤通讯技术有限公司 | Infrared intelligent missed call reminding system and using method thereof |
| CN103745548A (en) * | 2014-01-24 | 2014-04-23 | 成都万先自动化科技有限责任公司 | Pyroelectricity antitheft alarm |
-
2007
- 2007-11-23 CN CNU2007201710361U patent/CN201145745Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640723B (en) * | 2009-08-18 | 2012-06-13 | 上海华勤通讯技术有限公司 | Infrared intelligent missed call reminding system and using method thereof |
| CN103745548A (en) * | 2014-01-24 | 2014-04-23 | 成都万先自动化科技有限责任公司 | Pyroelectricity antitheft alarm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081105 Termination date: 20101123 |