CN104198043A - Infrared sensing signal processing circuit having power-on warming function and adjustable in time - Google Patents
Infrared sensing signal processing circuit having power-on warming function and adjustable in time Download PDFInfo
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- CN104198043A CN104198043A CN201410451665.4A CN201410451665A CN104198043A CN 104198043 A CN104198043 A CN 104198043A CN 201410451665 A CN201410451665 A CN 201410451665A CN 104198043 A CN104198043 A CN 104198043A
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Abstract
The invention discloses an infrared sensing signal processing circuit having a power-on warming function and adjustable in time. The infrared sensing signal processing circuit comprises a signal amplification module, a signal determination module, a state control module, an enabling detection module, an output driving module, a lockout timing module and a delay timing module. The infrared sensing signal processing circuit having the power-on warming function and adjustable in time is characterized in that the signal amplification module is used for amplifying an input signal, the amplified signal is input into the signal determination module and whether the amplified signal exceeds a threshold is determined, if the amplified signal exceeds the threshold, the signal determination module controls the state control module to enable the delay timing module to start working, the output driving module outputs an indicating signal in delayed time, after the expiry of timing of the delay timing module, the lockout timing module controls the circuit not to detect the input signal in lockout time, and the enabling detection module is used for controlling whether the circuit detects the input signal. Meanwhile, the infrared sensing signal processing circuit is integrated with the power-on warming function, and self-detection after powering on is convenient for both use and detection. The infrared sensing signal processing circuit having the power-on warming function and adjustable in time is applicable to products of human body infrared detection, human body microwave detection and the like.
Description
Technical field
The present invention relates to infrared sensing signal processing circuit technical field, particularly there is power on warming-up function and adjustable infrared sensing signal processing circuit of time.
Background technology
Along with developing rapidly of microelectric technique, computer networking technology and mechanics of communication industry.Human body infrared is responded to and human body is microwave induced all has a wide range of applications in human body sensing illumination, internet of things sensors, Digital Security System, intelligent toy, digital product etc.Traditional infrared signal processing circuit, pin is many, peripheral components is complicated, take PCB area more, be unfavorable for the miniaturization of product, the final products of simultaneously traditional infrared signal processing circuit, incomplete same when start detects, what some meeting work had does not work, and causes the detection of final products to have certain problem.
How to solve the deficiencies in the prior art and become existing infrared sensing signal processing circuit technical field a great problem.
Summary of the invention
Technical matters to be solved by this invention is to overcome the deficiencies in the prior art and provide to have power on warming-up function and adjustable infrared sensing signal processing circuit of time, this circuit can amplify the also signal of detecting sensor, when signal surpasses setting threshold judgement effectively, circuit output high level, controls follow-up other circuit or module work; The few few feature of the little peripheral components of package dimension of circuit pin of the present invention has the warming-up of powering on function simultaneously, when powering on, forces self check work once at every turn, facilitates application product test and debugging.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
What according to the present invention, propose has power on warming-up function and an adjustable infrared sensing signal processing circuit of time, comprises signal amplification module, signal judge module, status control module, enable detection module, output driver module, blocking time time block, delay time time block; Wherein,
Signal amplification module, exports signal judge module to for after input signal is amplified;
Signal judge module, compares signal and predefined high threshold voltage, low threshold voltage after amplifying, and the signal after amplifying is greater than high threshold voltage or is less than low threshold voltage, and output trigger pip is to status control module;
Enable detection module, default exports the first high level to status control module while enabling threshold voltage when external input voltage is greater than, and when voltage is less than or equal to, default exports the first low level to status control module while enabling threshold voltage;
Status control module, when circuit powers on and power supply is exported first after stable and controlled signal to delay time time block for the first time, or when enable detection module is output as the first high level, receives trigger pip and export first and control signal to delay time time block, output driver module;
Delay time time block, when receiving the first control signal, start timing, timing finishes rear output the first timing end signal to status control module, and status control module receives not receive trigger pip and export second after the first timing end signal and controls signal to blocking time time block, output driver module;
Blocking time time block, starts timing when receiving the second control signal, and timing finishes rear output the second timing end signal to status control module, and status control module restarts to receive trigger pip after receiving the second timing end signal;
Output driver module, exports the second high level after reception the first control signal, after reception the second control signal, exports the second low level.
As the scheme with the further optimization of power on warming-up function and adjustable infrared sensing signal processing circuit of time of the present invention, also comprise that, for encapsulating the housing of infrared sensing signal processing circuit, 1 ~ No. 8 pin of this housing is respectively: power supply, amplifier output terminal, the input of amplifier negative terminal, enable detection input end, delay time arrange end, blocking time arrange end, drive output; Wherein,
The 1st pin and signal amplification module, signal judge module, status control module, enable detection module, output driver module, blocking time time block, delay time time block is all connected, the 2nd, 3 pins are all connected with signal amplification module, the 4th pin is connected with enable detection module, the 5th pin is connected with delay time time block, the 6th pin is connected with blocking time time block, the 7th pin is connected with output driver module, the 8th pin and signal amplification module, signal judge module, status control module, enable detection module, output driver module, blocking time time block, delay time time block is all connected.
As the scheme with the further optimization of power on warming-up function and adjustable infrared sensing signal processing circuit of time of the present invention, described delay time time block regulates the time by the 5th pin.
As the scheme with the further optimization of power on warming-up function and adjustable infrared sensing signal processing circuit of time of the present invention, described blocking time time block regulates the time by the 6th pin.
As the scheme with the further optimization of power on warming-up function and adjustable infrared sensing signal processing circuit of time of the present invention, described infrared sensing signal processing circuit adopts 8 pin encapsulation.
The present invention adopts above technical scheme compared with prior art, there is following technique effect: the present invention can use on human body infrared detection and human body microwave testing product, use less peripheral components, amplify the also signal of detecting sensor, when signal surpasses setting threshold judgement effectively, circuit output high level, controls follow-up other circuit or module work; The present invention comprises the warming-up function that powers on, and when powering on, forces self check work once at every turn, facilitates application product test and debugging.
Accompanying drawing explanation
Fig. 1 is circuit structure signal of the present invention.
Fig. 2 is ic pin layout viewing of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
Circuit structure signal of the present invention as shown in Figure 1, there is power on warming-up function and adjustable infrared sensing signal processing circuit of time, comprise signal amplification module, signal judge module, status control module, enable detection module, output driver module, blocking time time block, delay time time block; Wherein,
Signal amplification module, exports signal judge module to for after input signal is amplified;
Signal judge module, compares signal and predefined high threshold voltage, low threshold voltage after amplifying, and the signal after amplifying is greater than high threshold voltage or is less than low threshold voltage, and output trigger pip is to status control module;
Enable detection module, default exports the first high level to status control module while enabling threshold voltage when external input voltage is greater than, and when voltage is less than or equal to, default exports the first low level to status control module while enabling threshold voltage;
Status control module, when circuit powers on and power supply is exported first after stable and controlled signal to delay time time block for the first time, or when enable detection module is output as the first high level, receives trigger pip and export first and control signal to delay time time block, output driver module;
Delay time time block, when receiving the first control signal, start timing, timing finishes rear output the first timing end signal to status control module, and status control module receives not receive trigger pip and export second after the first timing end signal and controls signal to blocking time time block, output driver module;
Blocking time time block, starts timing when receiving the second control signal, and timing finishes rear output the second timing end signal to status control module, and status control module restarts to receive trigger pip after receiving the second timing end signal;
Output driver module, exports the second high level after reception the first control signal, after reception the second control signal, exports the second low level.
Enable detection module is for detection of input voltage, when input voltage is greater than default first high level of exporting while enabling threshold voltage, control circuit detects input signal, when input voltage be less than or equal to default while enabling threshold voltage output low level control circuit do not detect input signal.For fear of output driver module, after the timing of delay time time block finishes, circuit is caused to abnormal impact during output low level, during the timing of blocking time time block, internal state control module does not receive trigger pip.
When powering on for the first time, after power supply is stable, no matter whether receive the trigger pip of signal judge module output, directly controls delay time time block and start timing, output driver module is exported the second high level, realizes once complete time delay timing course.
Ic pin layout viewing of the present invention as shown in Figure 2, the present invention adopts 8 pin package, its pin is arranged from 1 pin of roundel and is started to be sequentially aligned to counterclockwise 8 pin, also comprise that, for encapsulating the housing of infrared sensing signal processing circuit, 1 ~ No. 8 pin of this housing is respectively: power supply (VDD), amplifier output terminal (1OUT), the input of amplifier negative terminal (1IN1-), enable detection input end (VC), delay time arrange end (TX), blocking time arrange end (TI), drive output (OUT), (GND), wherein, the 1st pin and signal amplification module, signal judge module, status control module, enable detection module, output driver module, blocking time time block, delay time time block is all connected, the 2nd, 3 pins are all connected with signal amplification module, the 4th pin is connected with enable detection module, the 5th pin is connected with delay time time block, the 6th pin is connected with blocking time time block, the 7th pin is connected with output driver module, the 8th pin and signal amplification module, signal judge module, status control module, enable detection module, output driver module, blocking time time block, delay time time block is all connected.
Described delay time time block regulates the time by the 5th pin, and described blocking time time block regulates the time by the 6th pin.Described infrared sensing signal processing circuit adopts 8 pin encapsulation.
Claims (5)
1. there is power on warming-up function and adjustable infrared sensing signal processing circuit of time, it is characterized in that, comprise signal amplification module, signal judge module, status control module, enable detection module, output driver module, blocking time time block, delay time time block; Wherein,
Signal amplification module, exports signal judge module to for after input signal is amplified;
Signal judge module, compares signal and predefined high threshold voltage, low threshold voltage after amplifying, and the signal after amplifying is greater than high threshold voltage or is less than low threshold voltage, and output trigger pip is to status control module;
Enable detection module, default exports the first high level to status control module while enabling threshold voltage when external input voltage is greater than, and when voltage is less than or equal to, default exports the first low level to status control module while enabling threshold voltage;
Status control module, when circuit powers on and power supply is exported first after stable and controlled signal to delay time time block for the first time, or when enable detection module is output as the first high level, receives trigger pip and export first and control signal to delay time time block, output driver module;
Delay time time block, when receiving the first control signal, start timing, timing finishes rear output the first timing end signal to status control module, and status control module receives not receive trigger pip and export second after the first timing end signal and controls signal to blocking time time block, output driver module;
Blocking time time block, starts timing when receiving the second control signal, and timing finishes rear output the second timing end signal to status control module, and status control module restarts to receive trigger pip after receiving the second timing end signal;
Output driver module, exports the second high level after reception the first control signal, after reception the second control signal, exports the second low level.
2. according to claim 1 have power on warming-up function and an adjustable infrared sensing signal processing circuit of time, it is characterized in that, also comprise that, for encapsulating the housing of infrared sensing signal processing circuit, 1 ~ No. 8 pin of this housing is respectively: power supply, amplifier output terminal, the input of amplifier negative terminal, enable detection input end, delay time arrange end, blocking time arrange end, drive output; Wherein,
The 1st pin and signal amplification module, signal judge module, status control module, enable detection module, output driver module, blocking time time block, delay time time block is all connected, the 2nd, 3 pins are all connected with signal amplification module, the 4th pin is connected with enable detection module, the 5th pin is connected with delay time time block, the 6th pin is connected with blocking time time block, the 7th pin is connected with output driver module, the 8th pin and signal amplification module, signal judge module, status control module, enable detection module, output driver module, blocking time time block, delay time time block is all connected.
3. according to claim 2 have power on warming-up function and an adjustable infrared sensing signal processing circuit of time, it is characterized in that, described delay time time block regulates the time by the 5th pin.
4. according to claim 2 have power on warming-up function and an adjustable infrared sensing signal processing circuit of time, it is characterized in that, described blocking time time block regulates the time by the 6th pin.
5. according to claim 1 have power on warming-up function and an adjustable infrared sensing signal processing circuit of time, it is characterized in that, described infrared sensing signal processing circuit adopts 8 pin encapsulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410451665.4A CN104198043B (en) | 2014-09-05 | 2014-09-05 | Infrared sensing signal processing circuit having power-on warming function and adjustable in time |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410451665.4A CN104198043B (en) | 2014-09-05 | 2014-09-05 | Infrared sensing signal processing circuit having power-on warming function and adjustable in time |
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| CN104198043A true CN104198043A (en) | 2014-12-10 |
| CN104198043B CN104198043B (en) | 2017-03-22 |
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| CN201410451665.4A Expired - Fee Related CN104198043B (en) | 2014-09-05 | 2014-09-05 | Infrared sensing signal processing circuit having power-on warming function and adjustable in time |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58216920A (en) * | 1982-06-11 | 1983-12-16 | Toshiba Corp | Temperature detecting device for cooking machine |
| JP2001186391A (en) * | 2000-11-10 | 2001-07-06 | Mitsubishi Electric Corp | Infrared camera |
| CN203216613U (en) * | 2013-03-05 | 2013-09-25 | 通泰积体电路股份有限公司 | Pyroelectric type sensing element amplifier and pyroelectric type sensing element detection device |
| US20130272713A1 (en) * | 2012-04-12 | 2013-10-17 | Hon Hai Precision Industry Co., Ltd. | Signal processing circuit |
| CN203301465U (en) * | 2013-06-28 | 2013-11-20 | 歌尔声学股份有限公司 | Infrared signal processing circuit reducing interference |
-
2014
- 2014-09-05 CN CN201410451665.4A patent/CN104198043B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58216920A (en) * | 1982-06-11 | 1983-12-16 | Toshiba Corp | Temperature detecting device for cooking machine |
| JP2001186391A (en) * | 2000-11-10 | 2001-07-06 | Mitsubishi Electric Corp | Infrared camera |
| US20130272713A1 (en) * | 2012-04-12 | 2013-10-17 | Hon Hai Precision Industry Co., Ltd. | Signal processing circuit |
| CN203216613U (en) * | 2013-03-05 | 2013-09-25 | 通泰积体电路股份有限公司 | Pyroelectric type sensing element amplifier and pyroelectric type sensing element detection device |
| CN203301465U (en) * | 2013-06-28 | 2013-11-20 | 歌尔声学股份有限公司 | Infrared signal processing circuit reducing interference |
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| CN104198043B (en) | 2017-03-22 |
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