CN104166872A - Counting pyroelectric infrared sensor-based counter - Google Patents
Counting pyroelectric infrared sensor-based counter Download PDFInfo
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- CN104166872A CN104166872A CN201410328014.6A CN201410328014A CN104166872A CN 104166872 A CN104166872 A CN 104166872A CN 201410328014 A CN201410328014 A CN 201410328014A CN 104166872 A CN104166872 A CN 104166872A
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Abstract
The invention relates to a counting pyroelectric infrared sensor-based counter formed by five parts. According to the system, a low-cost single-chip microcomputer is used as a controller and is responsible for instruction controlling of the whole system. And with cooperation of a key, a display, a buzzer, and a sensor, functions of system working mode setting, system working state prompting, and people counting statistics and displaying and the like are completed. The counting infrared sensor that is a pyroelectric sensor especially for counting serves as the core of the whole system. The main distinction between the counting infrared sensor and the common infrared sensor is that the counting infrared sensor has the small view field that is presented to be a line basically, so that the sensor can be used for counting based on the characteristic.
Description
Technical field
The invention belongs to electronic technology, signal processing technology field, relate to a kind of counter based on counting pyroelectric infrared sensor.
Background technology
The application of counter is very extensive, and common counter has the object counter on flow of the people counter, vehicle flowrate counter, workshop streamline etc.Common counter is all that infrared emission, reception design pipe or electromagnetic induction principle.The counter that adopts infrared emission, the form of reception to pipe, needs two module cooperatings, a transmitter module transmitting infrared signal, and the receiver module of the other end receives signal.Realize directivity if want and detect, need two covers to pipe work.Thereby the volume of counting assembly and cost are increased greatly.The counter of electromagnetic induction principle is difficult to realize directivity and detects.Consider that infrared sensor can realize the particular detection to human body, two opposite polarity pulses of double base infrared sensor output, can be designed to double base infrared sensor to be exclusively used according to this principle the sensor with directivity counting.Universal infrared sensor is not suitable for more greatly counting in order to improve the field range of sensitivity design.
Summary of the invention
In order to solve the technical matters existing in prior art, the detection of realize target direction of motion and counting, the present invention proposes one and can be used for people counting device in public place (library, museum etc.) counting and shop, based on the counter of counting pyroelectric infrared sensor.
Based on a counter for counting pyroelectric infrared sensor, comprising:
Counting pyroelectric infrared sensor: for detect human motion by time count;
Single-chip microcomputer: require for completion system by key control, liquid crystal display and voice alarm;
Button: for system man-machine interaction, can control the mode of operation of amendment system by described button;
LCD display device: for showing respectively residue number in number of people entering and venue;
Voice alarm device: when system is arranged to not allow people when having people to approach, or while still having personnel in venue when venue clear-up, this voice alarm device can give the alarm.
In technique scheme, in described counting pyroelectric infrared sensor, have the sensitivity unit of two error-polarity connections, when human body with different directions through out-of-date, can output polarity contrary signal.
The present invention has following beneficial effect:
Counter based on counting pyroelectric infrared sensor of the present invention, utilizes diaphragm to dwindle field range, makes up visual field and dwindles the loss of signal bringing by increasing responsive elemental area and lens light gathering, makes sensor can have good sensitivity.Counter based on counting pyroelectric infrared sensor is compared the counter of infrared tube and electromagnetic induction, can realize the particular detection to human body, has less rate of false alarm.The infrared radiation of counter direct-detection human body based on counting infrared sensor of the present invention, does not need emissive source, simple in structure, has very large practical value.
The core of the counter based on counting pyroelectric infrared sensor of the present invention is counting pyroelectric infrared sensor, select single-chip microcomputer as processor, coordinate by key control and LCD or LED demonstration and voice reminder, can be used for people counting device in public place (library, museum etc.) counting and shop.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the theory structure schematic diagram of counter of the present invention.
Fig. 2 is counting pyroelectric infrared sensor principle schematic.
Fig. 3 is the principle of work schematic diagram of counter of the present invention.
Embodiment
Invention thought of the present invention is:
Counter each several part based on counting pyroelectric infrared sensor of the present invention is implemented as follows:
One, counting pyroelectric infrared sensor: counting pyroelectric infrared sensor is the core of whole system.This counting infrared sensor is a kind of pyroelectric infrared sensor that is exclusively used in counting.Common pyroelectric infrared sensor is because the reasons such as its visual field is large are not suitable for counting, and counting infrared sensor dwindles visual field, and makes up visual field and dwindle the loss of signal bringing by increasing the modes such as responsive elemental area and lens light gathering.In counting infrared sensor, there is the sensitivity unit of two error-polarity connections, when human body is through two contrary signals of out-of-date meeting output polarity.If human motion opposite direction, the signal form of output is just in time contrary.So counting infrared sensor moving direction of human body simultaneously.
Two, single-chip microcomputer: select the processor of single-chip microcomputer as system.Function of the MCU is powerful, can completion system require by functions such as key control, liquid crystal display and voice alarm.And SCM peripheral circuit is simple, low price, is conducive to control system cost.
Three, button: button is as a part for system man-machine interaction, by by the mode of operation of key control amendment system, as switching on and shutting down and set people's flow path direction into and out of etc.
Four, LCD display device and voice alarm device: LCD display device and voice alarm device are also parts for man-machine interaction.LCD display device can show respectively number of people entering and the interior residue number of venue etc.Voice alarm device is in the time that system is arranged to not allow people to pass through, and has people to approach and gives the alarm; Or venue clear-up is the personnel that still have in venue, and system also can give the alarm, remind staff.
Below in conjunction with accompanying drawing, the present invention is described in detail.
Counter based on counting pyroelectric infrared sensor is made up of five parts altogether.Be illustrated in figure 1 the structural drawing of counter.System adopts cheap single-chip microcomputer as controller, is responsible for the instruction control of whole system.Coordinate button, display, hummer and sensor completion system Working mode set, working state of system is reminded, the functions such as demographics demonstration.Wherein counting infrared sensor is the core of whole system.Counting infrared sensor is a kind of pyroelectric sensor that is exclusively used in counting.Its structural drawing as shown in Figure 2.The key distinction of counting infrared sensor and common infrared sensor is that the visual field of counting infrared sensor is very little, is straight line substantially, and such characteristic makes it can be used in counting.And common infrared sensor due to need of work have to visual field to be done large as far as possible, make it obtain larger output signal and investigative range, so common infrared sensor be inconvenient to be used for count.Counting infrared sensor is sacrificed investigative range and is obtained its isarithmic function.And counting infrared sensor has the every other advantage of common infrared sensor: do not need the direct receiving target infrared signal of emissive source, device urine is in hidden, low price etc.
The work schematic diagram of this counter as shown in Figure 3.Counter infrared sensor is installed and is entered on the single passage of shop mouth, and when having people through out-of-date, sensor there will be corresponding induction.The sensitivity unit direction that it should be noted that sensor is as far as possible vertical with people's direction of motion, otherwise may affect the response of sensor.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And the apparent variation of being extended out thus or variation are still among the protection domain in the invention.
Claims (3)
1. the counter based on counting pyroelectric infrared sensor, is characterized in that, comprising:
Counting pyroelectric infrared sensor: for detect human motion by time count;
Single-chip microcomputer: require for completion system by key control, liquid crystal display and voice alarm;
Button: for system man-machine interaction, can control the mode of operation of amendment system by described button;
LCD display device: for showing respectively residue number in number of people entering and venue;
Voice alarm device: when system is arranged to not allow people when having people to approach, or while still having personnel in venue when venue clear-up, this voice alarm device can give the alarm.
2. the counter based on counting pyroelectric infrared sensor according to claim 1, is characterized in that,
Described counting pyroelectric infrared sensor is improved unit or double base infrared sensor of the human body, and cell sensor is only exported a pulse signal in the time human body being detected, can export two opposite polarity signals when dual element sensor detects human body.
3. the counter based on counting pyroelectric infrared sensor according to claim 1, is characterized in that, described counting pyroelectric infrared sensor visual field maximum is no more than human body size, in its visual field, can only have a people simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328014.6A CN104166872A (en) | 2014-07-10 | 2014-07-10 | Counting pyroelectric infrared sensor-based counter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410328014.6A CN104166872A (en) | 2014-07-10 | 2014-07-10 | Counting pyroelectric infrared sensor-based counter |
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| CN104166872A true CN104166872A (en) | 2014-11-26 |
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| CN201410328014.6A Pending CN104166872A (en) | 2014-07-10 | 2014-07-10 | Counting pyroelectric infrared sensor-based counter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109306A (en) * | 2017-12-27 | 2018-06-01 | 中国电子科技集团公司第五十四研究所 | A kind of low-power-consumption infrared and image composite sensing detection device |
| CN110260810A (en) * | 2018-03-12 | 2019-09-20 | 深圳鼎然信息科技有限公司 | The vehicles, which multiply, carries demographic method, device, equipment and medium |
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| CN2702383Y (en) * | 2004-01-02 | 2005-05-25 | 赖晓峰 | Passenger number automatic statement device for passenger transport means |
| CN1739008A (en) * | 2003-01-21 | 2006-02-22 | 西荣科技有限公司 | Improved pir motion sensor |
| CN200972674Y (en) * | 2006-08-18 | 2007-11-07 | 浙江工业大学 | On-line management system based on infrared detection for room of guesthouse |
| CN102789691A (en) * | 2012-08-21 | 2012-11-21 | 北京信息科技大学 | Detecting method and detecting system of flow and speed of vehicles |
| CN203520447U (en) * | 2013-09-18 | 2014-04-02 | 江苏建筑职业技术学院 | Multifunctional library registration system |
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2014
- 2014-07-10 CN CN201410328014.6A patent/CN104166872A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1739008A (en) * | 2003-01-21 | 2006-02-22 | 西荣科技有限公司 | Improved pir motion sensor |
| CN2702383Y (en) * | 2004-01-02 | 2005-05-25 | 赖晓峰 | Passenger number automatic statement device for passenger transport means |
| CN200972674Y (en) * | 2006-08-18 | 2007-11-07 | 浙江工业大学 | On-line management system based on infrared detection for room of guesthouse |
| CN102789691A (en) * | 2012-08-21 | 2012-11-21 | 北京信息科技大学 | Detecting method and detecting system of flow and speed of vehicles |
| CN203520447U (en) * | 2013-09-18 | 2014-04-02 | 江苏建筑职业技术学院 | Multifunctional library registration system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108109306A (en) * | 2017-12-27 | 2018-06-01 | 中国电子科技集团公司第五十四研究所 | A kind of low-power-consumption infrared and image composite sensing detection device |
| CN110260810A (en) * | 2018-03-12 | 2019-09-20 | 深圳鼎然信息科技有限公司 | The vehicles, which multiply, carries demographic method, device, equipment and medium |
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Application publication date: 20141126 |
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