CN107911905B - Human infrared receiving and processing circuit and processing method thereof - Google Patents
Human infrared receiving and processing circuit and processing method thereof Download PDFInfo
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- CN107911905B CN107911905B CN201711296542.8A CN201711296542A CN107911905B CN 107911905 B CN107911905 B CN 107911905B CN 201711296542 A CN201711296542 A CN 201711296542A CN 107911905 B CN107911905 B CN 107911905B
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- 238000012545 processing Methods 0.000 title claims abstract description 23
- 238000003672 processing method Methods 0.000 title claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- 230000007613 environmental effect Effects 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000013139 quantization Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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Abstract
The invention discloses a human body infrared ray receiving and processing circuit and a processing method thereof, wherein the human body infrared ray receiving and processing circuit comprises a power supply filtering module, a pyroelectric infrared ray sensor PIR, a phototriode PHOT and a chip U1; the signal end of the pyroelectric infrared sensor PIR is connected with the chip U1 and is grounded through the capacitor C1; the collector electrode of the phototriode PHOT is used as a power end to be connected with the output end of the power filtering module, and the emitter electrode is connected with the chip U1; the chip U1 is integrated with an ADC conversion module and a CPU CORE, and the ADC conversion module receives signals collected by the pyroelectric infrared sensor PIR and the phototriode PHOT, converts the signals into digital signals and sends the digital signals to the CPU CORE for processing. The invention directly carries out 24bit digital quantization processing on the micro signals output by the pyroelectric infrared sensor PIR and the phototriode PHOT, and uses digital filtering, identification and control in the whole process, thereby reducing the processing part of a circuit, improving the signal to noise ratio, improving the sensitivity, automatically distinguishing the distinction between human bodies and the environment, greatly reducing false actions and being not influenced by the environment.
Description
Technical Field
The invention relates to the fields of automatic lighting lamps, intelligent household appliances, intelligent control and security alarm, in particular to a human infrared receiving and processing circuit and a processing method thereof.
Background
The current human infrared receiving and processing technology is to amplify the micro signal output by the human infrared probe to a control output circuit which can be identified by logic level or to an AD signal to control the circuit, and the technology has the greatest characteristics of low signal-to-noise ratio, complex circuit and easy influence by temperature, humidity, self lamplight heat and other environments, as shown in figure 1.
Disclosure of Invention
In order to solve the technical problems, the invention discloses a human infrared receiving and processing circuit and a processing method thereof.
The technical scheme adopted by the invention is as follows:
a human body infrared receiving and processing circuit comprises a power supply filtering module, a pyroelectric infrared sensor PIR, a phototriode PHOT and a chip U1; the output end of the power supply filtering module is respectively connected to the power supply end of the pyroelectric infrared sensor PIR, the power supply end of the phototriode PHOT and the power supply end of the chip U1; the signal end of the pyroelectric infrared sensor PIR is connected with the chip U1 and is grounded through the capacitor C1; the collector electrode of the phototriode PHOT is used as a power end to be connected with the output end of the power filtering module, and the emitter electrode is connected with the chip U1; the chip U1 is integrated with an ADC conversion module and a CPU CORE, and the ADC conversion module receives signals collected by the pyroelectric infrared sensor PIR and the phototriode PHOT, converts the signals into digital signals, sends the digital signals to the CPU CORE for processing, and then outputs control signals to the output port OUT.
Preferably, the model number U1 of the chip is HY15P41.
Specifically, the chip U1 is integrated with an internal reference source VDD, an output control module, a communication module and a plurality of I/O ports; the signal input of the internal reference source VDD is converted into a digital signal by the input end of the ADC conversion module; the output end of the I/O port is connected with the input end of the CPU CORE to send the received signal to the CPU CORE for processing; the output control module and the communication module are respectively connected with the CPU CORE, and the output end of the output control module is used for sending control signals to the output port OUT.
Further, the input end of the ADC conversion module is further connected to a timer, an infrared emission intensity adjustment port LUX, a brightness setting port HDM port when the lamp is lighted by induction, a micro-lighting brightness setting port LDM port when the lamp is lighted by non-induction, an induction distance adjustment port RANGE, a mode adjustment port Model or a power supply electric quantity detection port LBin.
Further, the input end of the I/O port is also connected with a key, an alternating current zero crossing detection port ZC/PMO or a remote control receiving port IR in.
Preferably, the communication module is one or more of URAT, IIC and SPI.
Specifically, the power supply filtering module includes a power supply VCC, and a filtering capacitor C3 with an anode connected to the power supply VCC and a cathode grounded.
Further, the CPU CORE is also connected with a load module.
Specifically, the load module comprises a MOS tube Q1, a resistor R1, a resistor RL and an LED lamp, wherein one end of the resistor RL is connected with the output end of the power supply filter module after being connected in series with the LED lamp, the other end of the resistor RL is connected with the drain electrode of the MOS tube Q1, the source electrode of the MOS tube Q1 is grounded, the grid electrode of the MOS tube Q1 is connected with the output port OUT of the chip U1, and one end of the resistor R1 is connected with the output port OUT of the chip U1 and the other end of the resistor R1 is grounded.
A processing method of human body infrared ray receiving and processing circuit comprises the following steps:
s1, powering up initialization hardware;
s2, a temperature controller: the environment obtains original data, and the background is inlaid in;
s3, extracting a human body signal acquired by a pyroelectric infrared sensor PIR and an environment signal acquired by a phototriode PHOT, comparing the environment signal with the human body signal, changing the human body signal into a background signal if no human body signal exists for a long time, executing the step S4, and returning to continuously compare the environment signal with the human body signal if no human body signal exists for a long time;
s4, identifying whether the current signal is an interference signal caused by light or heat of a self-lighting lamp or an effective signal caused by light or heat of the self-lighting lamp, if the current signal is the effective signal caused by light or heat of the self-lighting lamp, executing the step S5, and if the current signal is not the effective signal, returning to continuously compare the environmental signal with the human body signal difference;
s5, outputting control and feeding back an output signal difference value.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invention is digitally processed in the whole course, is not affected by temperature, humidity and other environments, and has high sensitivity.
(2) The intelligent lamp light heat detector provided by the invention has the advantages of intelligent identification, strong anti-interference capability and intelligent identification of the lamp light heat through chip filtering.
(3) The invention has simple circuit and high reliability, and can directly input multiple paths of signals.
(4) The invention has low quiescent current and micro-level, is suitable for battery power supply and solar panel charging and power supply.
(5) The 2.5V-5V power supply can cancel the voltage stabilizing IC, and only the circuit performance can be kept unchanged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic circuit diagram of the prior art.
Fig. 2 is a schematic circuit diagram of the present invention.
Fig. 3 is an internal functional block diagram of the chip U1 in fig. 2.
Fig. 4 is a flowchart of an internal processing method of the chip U1 in fig. 2.
Detailed Description
The invention is further described below with reference to the accompanying drawings. Embodiments of the present invention include, but are not limited to, the following examples.
Examples
As shown in fig. 2-4, a human body infrared receiving and processing circuit comprises a power supply filtering module, a pyroelectric infrared sensor PIR, a phototriode PHOT and a chip U1.
The power supply filtering module comprises a power supply VCC, and a filtering capacitor C3, wherein the positive electrode of the filtering capacitor C is connected with the power supply VCC, and the negative electrode of the filtering capacitor C is grounded, and the output end of the filtering module is respectively connected to the power supply end of the pyroelectric infrared sensor PIR, the power supply end of the phototriode PHOT and the power supply end of the chip U1. The power supply VCC is 2.5V-5V.
The signal end of the pyroelectric infrared sensor PIR is connected with the 2 pin of the chip U1 and is grounded through the capacitor C1.
The collector electrode of the phototriode PHOT is used as a power end to be connected with the output end of the power filtering module, and the emitter electrode is connected with the 3 pin of the chip U1.
The 5 pins and the 6 pins of the chip U1 are respectively output control pins.
The 1 pin of the chip U1 is also connected with a capacitor C2.
In this embodiment, the model of the chip U1 is HY15P41, and the model of the pyroelectric infrared sensor PIR is RE200.
In this embodiment, the chip U1 is integrated with a plurality of I/O ports, an ADC conversion module, a CPU CORE, an internal reference source VDD, an output control module, and a communication module, where an input end of the ADC conversion module is configured to receive and convert signal inputs of the pyroelectric infrared sensor PIR and the phototransistor PHOT into digital signals, an input end of the ADC conversion module is further configured to receive signal inputs of a timer, an infrared emission intensity adjustment port LUX, a brightness setting port HDM port when the light is induced, a brightness setting port LDM port when the light is not induced, an induction distance adjustment port RANGE, a mode adjustment port Model, or a power supply capacity detection port LBin, and a signal input of the internal reference source VDD, and to process the processed digital signals to the CPU CORE, and an input end of the I/O port is configured to receive signal inputs of a key, an ac zero crossing detection port ZC/PMO, or a remote control receiving port in, and an output end of the I/O port is connected to the CPU CORE to process the received signal input from the CPU CORE. The CPU CORE is also connected with an output control module and a communication module, wherein the output end of the output control module is used for sending a control signal to the output port OUT, and the communication module is used for connecting with a transmitting port TX and a receiving port RX (URAT), or a bidirectional data line port SDA and a clock line port SCL (IIC), or a chip selection input port SCS, a serial clock input port SCK and a serial data input/output port SDIO (SPI). Correspondingly, the communication module is one or more of UART, SPI, IIC communication modules.
In this embodiment, the CPU CORE is further connected to a brightness, mode, status or power indication module.
In this embodiment, the output port OUT of the chip U1 is further connected to a load module, where the load module includes a MOS tube Q1, a resistor R1, a resistor RL and an LED lamp, one end of the resistor RL is connected in series with the LED lamp and then connected to the output end of the power filter module, the other end of the resistor RL is connected to the drain electrode of the MOS tube Q1, the source electrode of the MOS tube Q1 is grounded, the gate electrode of the MOS tube Q1 is connected to the output port OUT of the chip U1, and one end of the resistor R1 is connected to the output port OUT of the chip U1 and the other end is grounded.
The invention directly carries out 24bit digital quantization processing on the micro signals output by the pyroelectric infrared sensor PIR and the phototriode PHOT, uses digital filtering, identification and control in the whole process, reduces the circuit processing part, improves the signal to noise ratio, improves the sensitivity, takes the environmental problems of environmental temperature, humidity, self lamplight heat and the like as the background, automatically distinguishes the distinction between human body and environment, and greatly reduces misoperation, so that the invention is not influenced by the environment.
The internal processing method of the chip U1 comprises the following steps:
s1, powering up initialization hardware;
s2, a temperature controller: the environment obtains original data, and the background is inlaid in;
s3, extracting a human body signal acquired by a pyroelectric infrared sensor PIR and an environment signal acquired by a phototriode PHOT, comparing the environment signal with the human body signal, changing the human body signal into a background signal if no human body signal exists for a long time, executing the step S4, and returning to continuously compare the environment signal with the human body signal if no human body signal exists for a long time;
s4, identifying whether the current signal is an interference signal caused by light or heat of a self-lighting lamp or an effective signal caused by light or heat of the self-lighting lamp, if the current signal is the effective signal caused by light or heat of the self-lighting lamp, executing the step S5, and if the current signal is not the effective signal, returning to continuously compare the environmental signal with the human body signal difference;
s5, outputting control and feeding back an output signal difference value.
The present invention can be well implemented according to the above-described embodiments. It should be noted that, based on the above design principle, even if some insubstantial changes or color modification are made on the basis of the structure disclosed in the present invention, the adopted technical solution is still substantially the same as the present invention, so that the technical solution is also within the protection scope of the present invention.
Claims (9)
1. The processing method of the human infrared receiving and processing circuit is applied to the human infrared receiving and processing circuit, and the processing circuit comprises a power supply filtering module, a pyroelectric infrared sensor PIR, a phototriode PHOT and a chip U1;
the output end of the power supply filtering module is respectively connected to the power supply end of the pyroelectric infrared sensor PIR, the power supply end of the phototriode PHOT and the power supply end of the chip U1;
the signal end of the pyroelectric infrared sensor PIR is connected with the chip U1 and is grounded through the capacitor C1;
the collector electrode of the phototriode PHOT is used as a power end to be connected with the output end of the power filtering module, and the emitter electrode is connected with the chip U1;
the chip U1 is integrated with an ADC conversion module and a CPU CORE, wherein the ADC conversion module receives signals collected by the pyroelectric infrared sensor PIR and the phototriode PHOT, converts the signals into digital signals, sends the digital signals to the CPU CORE for processing, and then outputs control signals to an output port OUT;
and the method comprises the steps of:
s1, powering up initialization hardware;
s2, a temperature controller: the environment obtains original data, and the background is inlaid in;
s3, extracting a human body signal acquired by a pyroelectric infrared sensor PIR and an environment signal acquired by a phototriode PHOT, comparing the environment signal with the human body signal, changing the human body signal into a background signal if no human body signal exists for a long time, executing the step S4, and returning to continuously compare the environment signal with the human body signal if no human body signal exists for a long time;
s4, identifying whether the current signal is an interference signal caused by light or heat of a self-lighting lamp or an effective signal caused by light or heat of the self-lighting lamp, if the current signal is the effective signal caused by light or heat of the self-lighting lamp, executing the step S5, and if the current signal is not the effective signal, returning to continuously compare the environmental signal with the human body signal difference;
s5, outputting control and feeding back an output signal difference value.
2. The processing method according to claim 1, wherein the chip U1 model is HY15P41.
3. The processing method according to claim 1, wherein the chip U1 is integrated with an internal reference source VDD, an output control module, a communication module, and a plurality of I/O ports;
the signal input of the internal reference source VDD is converted into a digital signal by the input end of the ADC conversion module;
the output end of the I/O port is connected with the input end of the CPU CORE to send the received signal to the CPU CORE for processing;
the output control module and the communication module are respectively connected with the CPU CORE, and the output end of the output control module is used for sending control signals to the output port OUT.
4. The processing method according to claim 1, wherein the input end of the ADC conversion module is further connected to a timer, an infrared emission intensity adjustment port LUX, a brightness setting port HDM when the lamp is turned on by induction, a brightness setting port LDM when the lamp is turned on by no induction, a sensing distance adjustment port RANGE, a mode adjustment port Model, or a power supply amount detection port LBin.
5. A processing method according to claim 3, characterized in that the input of the I/O port is also connected to a key, an ac zero crossing detection port ZC/PMO or a remote control receiving port IR in.
6. A processing method according to claim 3, wherein the communication module is one or more of URAT, IIC and SPI.
7. The processing method according to claim 1, wherein the power supply filtering module includes a power supply VCC, and a filter capacitor C3 having an anode connected to the power supply VCC and a cathode grounded.
8. A method of processing according to any one of claims 1 to 7, wherein the CPU CORE is further coupled to a load module.
9. The processing method according to claim 8, wherein the load module comprises a MOS transistor Q1, a resistor R1, a resistor RL and an LED lamp, one end of the resistor RL is connected with the output end of the power filter module after being connected in series with the LED lamp, the other end of the resistor RL is connected with the drain electrode of the MOS transistor Q1, the source electrode of the MOS transistor Q1 is grounded, the gate electrode of the MOS transistor Q1 is connected with the output port OUT of the chip U1, and one end of the resistor R1 is connected with the output port OUT of the chip U1 and the other end is grounded.
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| CN107911905B true CN107911905B (en) | 2024-03-26 |
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| CN116430468B (en) * | 2023-06-14 | 2023-08-29 | 厦门星纵物联科技有限公司 | Dynamic human body presence detection method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867361A (en) * | 2010-05-14 | 2010-10-20 | 东莞巨扬电器有限公司 | Human body infrared ray receiving processing circuit |
| CN202268864U (en) * | 2011-10-17 | 2012-06-06 | 李云飞 | Digital human body infrared receiving and processing circuit |
| CN202267540U (en) * | 2011-10-17 | 2012-06-06 | 李云飞 | Full-digital type human body infrared receiving processing circuit |
| CN207475942U (en) * | 2017-12-08 | 2018-06-08 | 赵慧亮 | A kind of human body infrared ray receiving processing circuit |
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2017
- 2017-12-08 CN CN201711296542.8A patent/CN107911905B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867361A (en) * | 2010-05-14 | 2010-10-20 | 东莞巨扬电器有限公司 | Human body infrared ray receiving processing circuit |
| CN202268864U (en) * | 2011-10-17 | 2012-06-06 | 李云飞 | Digital human body infrared receiving and processing circuit |
| CN202267540U (en) * | 2011-10-17 | 2012-06-06 | 李云飞 | Full-digital type human body infrared receiving processing circuit |
| CN207475942U (en) * | 2017-12-08 | 2018-06-08 | 赵慧亮 | A kind of human body infrared ray receiving processing circuit |
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