CN102507017A - Digital type human body infrared receiver - Google Patents
Digital type human body infrared receiver Download PDFInfo
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- CN102507017A CN102507017A CN2011103143179A CN201110314317A CN102507017A CN 102507017 A CN102507017 A CN 102507017A CN 2011103143179 A CN2011103143179 A CN 2011103143179A CN 201110314317 A CN201110314317 A CN 201110314317A CN 102507017 A CN102507017 A CN 102507017A
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Abstract
The invention discloses a digital type human body infrared receiver, which comprises a passive infrared radiation (PIR) sensor component and a signal processing circuit, wherein the signal processing circuit of a microprocessor chip with a high-performance A/D transformation function and low power consumption and the PIR sensor component are integrated on a same metal shell, the PIR sensor component detects and receives a weak analog voltage signal transformed from infrared radiation; the weak analog voltage signal is directly digitally processed by the signal processing circuit in the same metal shell, namely the weak analog voltage signal is subjected into A/D conversion by the microprocessor chip into a digital signal and then is identified as a useful signal by software embedded in the microprocessor chip, all processing processes are completed in the microprocessor chip; and a digital signal for characterizing whether people enters a sensing region is directly output after the processing is completed. According to the digital type human body infrared receiver, interference in a signal transforming process is not caused, interference of outside spurious signals is also shielded by the metal shell, thus interference resistance and reliability of the human body infrared receiver are remarkably improved, and an application circuit is designed and produced simply, reliably, conveniently and rapidly.
Description
Technical field
The present invention relates to infrared radiation and receive, particularly relate to a kind of digital human body infrared remote receiver.
Background technology
Existing utilize perception human body self heat to send the infrared signal detecting whether the someone gets into the automatic control circuit of detection area; Adopt passive infrared radiation (Passive Infrared Radiation mostly; Initialism is PIR) sensor, claim the human-body infrared sensing device again.Announced a kind of " the human body infrared remote receiver of multiple light-ray condensing lens without focal length is housed " like Chinese patent CN2148362Y; Form by human-body infrared sensing device, signal amplifier, controllable silicon or triode or other pattern power amplification device and stabilized voltage supply etc., it is characterized in that multiple light-ray condensing lens without focal length being housed in human-body infrared sensing circuit front.The distance that the human-body infrared sensing circuit is received increases, and acceptance angle is adjustable, and the dividing line of reception area is straight and clear, is widely used in aspects such as security personnel's defence, burglar alarm, automated production.But the signal Processing of this human body infrared remote receiver is the amplification and the identification of simulating signal, and the components and parts that its signal amplifier, controllable silicon or triode or other pattern power amplification device adopt are many, and complicated circuit is subject to disturb, and sensitivity and reliability are lower.
Summary of the invention
Technical matters to be solved by this invention is the defective that remedies above-mentioned prior art, and a kind of digital human body infrared remote receiver is provided.
Technical matters of the present invention solves through following technical scheme.
This digital human body infrared remote receiver comprises passive infrared radiation PIR sensing element and signal processing circuit, and the input end of said signal processing circuit is connected with the output terminal of said PIR sensing element.
The characteristics of this digital human body infrared remote receiver are:
Said signal processing circuit and said PIR sensing element are integrated in same metal shell; The faint analog voltage signal that said PIR sensing element is surveyed and the reception infrared radiation changes is directly to carry out digital processing by the signal processing circuit in the same metal shell, accomplishes the direct output in processing back and characterizes the digital signal whether someone gets into detection area; There is not the interference of signals transmission; The interference of outside spurious signal can significantly improve the antijamming capability and the reliability of human body infrared remote receiver also by the metal shell shielding, and; Make the design and the production of application circuit become simple and reliable, convenient and swift.
Said signal processing circuit is a microcontroller circuit, and said microcontroller circuit adopts little process chip of the low-power consumption with high performance analog/digital (Analog/Digital, initialism are A/D) translation function.
Said signal processing circuit is carried out digital processing, comprises that carrying out A/D by said little process chip converts digital signal into, and by the software identification useful signal that embeds said little process chip, all processing procedure is accomplished in said little process chip again.
Technical matters of the present invention solves through following further technical scheme.
Said PIR sensing element comprises the narrow bandpass filter glass, with the human body infrared pyroelectricity element that converts charge signal into, and converts the charge signal of pyroelectricity element output the FET of faint analog voltage signal into.
Said narrow bandpass filter glass is that only allowing through wavelength is the human body infrared filter glass about 10 μ m, and it is installed in the induction receive window of said housing.
Said pyroelectricity element is the human body infrared detecting element that adopts high Seebeck coefficient material; Place said narrow bandpass behind; Receive the human body infrared of said narrow bandpass filter glass transmission; One end of said pyroelectricity element is connected with the G utmost point of said FET, and the other end is connected with public ground GND.
Said FET is N NMOS N-channel MOS N FET (Metal Oxide Semiconductor Field Effect Transistor; Initialism is MOSFET); The S of said FET end is output terminal, be connected with the input end AI0 of said little process chip, and and public ground GND between be provided with output resistance, the anti-interference capacitor that is connected in parallel; The D end of said FET is dc power supply terminal, is connected with the VDDA end of said little process chip.
The little process chip of said low-power consumption is HY11P series high integration, the little process chip of low-power consumption; In build the high-res analog to digital converter; Its input end AI0 is connected with the S end of said FET, and port P2.2 is output terminal OUT, and its VSS end is connected with public ground GND; Its vdd terminal is connected with power supply+vdd terminal with the RST end; And be connected a matching capacitance between its VDDA end and the said public ground GND, its ACM hold with said public ground GND between be connected another matching capacitance, be used to A/D and change burning voltage is provided.
Digital human body infrared remote receiver technical matters of the present invention solves through following further again technical scheme.
Said high Seebeck coefficient material is a kind of in lead zirconate titanate system pottery, lithium tantalate and the triglycine sulfate.
Said FET is that model is the FET of SS4117.
Said little process chip is that model is little process chip of HY11P41.
The appearance value that is connected a matching capacitance between said ACM end and the said public ground GND is 0.1 μ F, said VDDA hold with said public ground GND between be connected another matching capacitance the appearance value be 1 μ F.
The resistance of said output resistance is 56K Ω, and the appearance value of said anti-interference capacitor is 0.1 μ F.
The beneficial effect of the present invention and prior art contrast is:
Signal processing circuit of the present invention and PIR sensing element are integrated in same metal shell; The faint analog voltage signal that the PIR sensing element is surveyed and the reception infrared radiation changes is directly carried out digital processing by the signal processing circuit in the same metal shell, accomplish the direct output in processing back and characterize the digital signal whether someone gets into detection area.Do not have the interference of signals transmission, the interference of outside spurious signal significantly improves the antijamming capability and the reliability of human body infrared remote receiver also by the metal shell shielding, and, make the design of application circuit and produce become simple and reliable, convenient and swift.
Description of drawings
Accompanying drawing is the circuit composition diagram of the specific embodiment of the invention.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention will be described.
A kind of like digital human body infrared remote receiver shown in the drawings, comprise passive infrared radiation PIR sensing element 2 and signal processing circuit 3, the input end of signal processing circuit 3 is connected with the output terminal of PIR sensing element 2.
Signal processing circuit 3 is integrated in same metal shell with PIR sensing element 2; The faint analog voltage signal that PIR sensing element 2 is surveyed and the reception infrared radiation changes is directly to carry out digital processing by the signal processing circuit in the same metal shell 3, accomplishes the direct output in processing back and characterizes the digital signal whether someone gets into detection area; There is not the interference of signals transmission; The interference of outside spurious signal can significantly improve the antijamming capability and the reliability of human body infrared remote receiver also by the metal shell shielding, and; Make the design and the production of application circuit become simple and reliable, convenient and swift.
Signal processing circuit 3 is that the employing model is the microcontroller circuit of the little process chip U1 of low-power consumption with high-performance A/D translation function of HY11P41; The direct little process chip U1 of entering of faint analog voltage signal that the infrared radiation transformation was surveyed and received to PIR sensing element 2 carries out digital processing; Comprise that carrying out A/D by little process chip U1 converts digital signal into; Again by the software identification useful signal that embeds little process chip U1; After all processing procedure was accomplished in little process chip U1, directly output characterized the digital signal whether someone gets into detection area.Little process chip HY11P41, in build the high-res analog to digital converter, the S end of its input end AI0 and FET Q1 is connected; Port P2.2 is output terminal OUT; Its VSS end is connected with public ground GND, and its vdd terminal is held with RST and is connected with power supply+vdd terminal, and its VDDA hold with public ground GND between to be connected an appearance value be the matching capacitance C3 of 1 μ F; The matching capacitance C2 that to be connected another appearance value between its ACM end and the public ground GND be 0.1 μ F is used to A/D and changes burning voltage is provided.
PIR sensing element 2 comprises narrow bandpass filter glass 1, with the human body infrared pyroelectricity element Rs that converts charge signal into, and the FET Q1 that the charge signal of pyroelectricity element Rs output is converted into faint analog voltage signal.
Narrow bandpass filter glass 1 is that only allowing through wavelength is the human body infrared filter glass about 10 μ m, and it is installed in the induction receive window of housing.
Pyroelectricity element Rs is that the employing lead titanates is the human body infrared detecting element of ceramic; Place narrow bandpass filter glass 1 back; Receive the human body infrared of narrow bandpass filter glass 1 transmission, the end of pyroelectricity element Rs is connected with the G utmost point of FET Q1, and the other end is connected with public ground GND.
FET Q1 is that model is the N-channel MOS FET of SS4117; The S end of FET Q1 is output terminal; Be connected with the input end AI0 of little process chip U1; And and to be provided with output resistance R1, the appearance value that the resistance that is connected in parallel is 56K Ω between the public ground GND be the anti-interference capacitor C1 of 0.1 μ F, and the D end of FET Q1 is dc power supply terminal, is connected with the VDDA end of little process chip U1.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.Those of ordinary skill for technical field under the present invention; Under the prerequisite that does not break away from the present invention's design, make some alternative or obvious modification that are equal to; And performance or purposes are identical, all should be regarded as belonging to the scope of patent protection that the present invention is confirmed by claims of being submitted to.
Claims (10)
1. a digital human body infrared remote receiver comprises passive infrared radiation PIR sensing element and signal processing circuit, and the input end of said signal processing circuit is connected with the output terminal of said PIR sensing element, it is characterized in that:
Said signal processing circuit and said PIR sensing element are integrated in same metal shell; The faint analog voltage signal that infrared radiation changes is surveyed and received to said PIR sensing element; Be directly to carry out digital processing, accomplish directly to export after handling characterizing the digital signal whether someone gets into detection area by the signal processing circuit in the same housing;
Said signal processing circuit is a microcontroller circuit, and said microcontroller circuit adopts little process chip of the low-power consumption with high-performance A/D translation function;
Said signal processing circuit is carried out digital processing, comprises that carrying out A/D by said little process chip converts digital signal into, and by the software identification useful signal that embeds said little process chip, all processing procedure is accomplished in said little process chip again.
2. digital human body infrared remote receiver as claimed in claim 1 is characterized in that:
Said PIR sensing element comprises the narrow bandpass filter glass, with the human body infrared pyroelectricity element that converts charge signal into, and converts the charge signal of pyroelectricity element output the FET of faint analog voltage signal into.
3. according to claim 1 or claim 2 digital human body infrared remote receiver is characterized in that:
Said narrow bandpass filter glass is that only allowing through wavelength is the human body infrared filter glass about 10 μ m, and it is installed in the induction receive window of said housing.
4. digital human body infrared remote receiver as claimed in claim 3 is characterized in that:
Said pyroelectricity element is the human body infrared detecting element that adopts high Seebeck coefficient material; Place said narrow bandpass behind; Receive the human body infrared of said narrow bandpass filter glass transmission; One end of said pyroelectricity element is connected with the G utmost point of said FET, the other end be connected publicly.
5. digital human body infrared remote receiver as claimed in claim 4 is characterized in that:
Said FET is a N NMOS N-channel MOS N FET; The S end of said FET is output terminal; Be connected with the input end AI0 of said little process chip; And and being provided with output resistance, the anti-interference capacitor that is connected in parallel between the public ground, the D end of said FET is dc power supply terminal, is connected with the VDDA end of said little process chip.
6. digital human body infrared remote receiver as claimed in claim 5 is characterized in that:
Said little process chip is little process chip of HY11P series high integration, low-power consumption, in build the high-res analog to digital converter, its input end AI0 holds with the S of said FET and is connected; Port P2.2 is an output terminal; Its VSS end be connected publicly, its vdd terminal is held with RST and is connected with power supply+vdd terminal, and its VDDA hold with said public ground GND between be connected a matching capacitance; Be connected another matching capacitance between its ACM end and the said public ground GND, be used to A/D and change burning voltage is provided.
7. digital human body infrared remote receiver as claimed in claim 6 is characterized in that:
Said high Seebeck coefficient material is a kind of in lead zirconate titanate system pottery, lithium tantalate and the triglycine sulfate.
8. digital human body infrared remote receiver as claimed in claim 7 is characterized in that:
Said FET is that model is the FET of SS4117.
9. digital human body infrared remote receiver as claimed in claim 8 is characterized in that:
Said little process chip is that model is little process chip of HY11P41.
10. digital human body infrared remote receiver as claimed in claim 9 is characterized in that:
The appearance value that is connected a matching capacitance between said ACM end and the public ground is 0.1 μ F, said VDDA hold with public ground between be connected another matching capacitance the appearance value be 1 μ F;
The resistance of said output resistance is 56K Ω, and the appearance value of said anti-interference capacitor is 0.1 μ F.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103143179A CN102507017A (en) | 2011-10-17 | 2011-10-17 | Digital type human body infrared receiver |
| JP2012141609A JP5663781B2 (en) | 2011-10-17 | 2012-06-25 | Infrared receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103143179A CN102507017A (en) | 2011-10-17 | 2011-10-17 | Digital type human body infrared receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102507017A true CN102507017A (en) | 2012-06-20 |
Family
ID=46219124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103143179A Pending CN102507017A (en) | 2011-10-17 | 2011-10-17 | Digital type human body infrared receiver |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5663781B2 (en) |
| CN (1) | CN102507017A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800167A (en) * | 2012-08-21 | 2012-11-28 | 广州市渡明信息技术有限公司 | Mobile device and anti-theft method |
| CN112067146A (en) * | 2020-07-29 | 2020-12-11 | 深圳海翼智新科技有限公司 | PIR sensor detection method, device and system and computer storage medium |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370313B (en) * | 2016-11-30 | 2023-09-08 | 苏州华芯微电子股份有限公司 | MCU type intelligent PIR sensor signal processing device |
| CN110515338A (en) * | 2019-09-11 | 2019-11-29 | 上海秋豪衡器有限公司 | A kind of digital sensor |
| GB2611331A (en) * | 2021-09-30 | 2023-04-05 | Sky Cp Ltd | Sensing circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2211630Y (en) * | 1994-04-14 | 1995-11-01 | 上海尼赛拉传感器有限公司 | Passitive infrared alarm |
| US6307200B1 (en) * | 1999-03-10 | 2001-10-23 | Interactive Technologies, Inc. | Passive infrared sensor apparatus and method with DC offset compensation |
| CN2785051Y (en) * | 2005-01-24 | 2006-05-31 | 郑国恩 | Anti-interference pyroelectric infrared sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6426183A (en) * | 1987-07-22 | 1989-01-27 | Sharp Kk | Human body detecting device |
| JPH0552650A (en) * | 1991-08-23 | 1993-03-02 | Tdk Corp | Infrared radiation detector |
| JP2927117B2 (en) * | 1992-07-27 | 1999-07-28 | 株式会社村田製作所 | Pyroelectric infrared sensor module |
| JPH0694522A (en) * | 1992-09-09 | 1994-04-05 | Horiba Ltd | Self-diagnosing pyroelectric detector |
| JP2001304957A (en) * | 2000-04-20 | 2001-10-31 | Matsushita Electric Ind Co Ltd | Pyroelectric infrared sensor and method and device for detecting human body using it |
| JP2007171058A (en) * | 2005-12-22 | 2007-07-05 | Matsushita Electric Works Ltd | Infrared detector |
-
2011
- 2011-10-17 CN CN2011103143179A patent/CN102507017A/en active Pending
-
2012
- 2012-06-25 JP JP2012141609A patent/JP5663781B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2211630Y (en) * | 1994-04-14 | 1995-11-01 | 上海尼赛拉传感器有限公司 | Passitive infrared alarm |
| US6307200B1 (en) * | 1999-03-10 | 2001-10-23 | Interactive Technologies, Inc. | Passive infrared sensor apparatus and method with DC offset compensation |
| CN2785051Y (en) * | 2005-01-24 | 2006-05-31 | 郑国恩 | Anti-interference pyroelectric infrared sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800167A (en) * | 2012-08-21 | 2012-11-28 | 广州市渡明信息技术有限公司 | Mobile device and anti-theft method |
| CN112067146A (en) * | 2020-07-29 | 2020-12-11 | 深圳海翼智新科技有限公司 | PIR sensor detection method, device and system and computer storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5663781B2 (en) | 2015-02-04 |
| JP2013088427A (en) | 2013-05-13 |
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Application publication date: 20120620 |