CN102589715B - Pyroelectric infrared detection device and detection method thereof - Google Patents
Pyroelectric infrared detection device and detection method thereof Download PDFInfo
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- CN102589715B CN102589715B CN201210049456.8A CN201210049456A CN102589715B CN 102589715 B CN102589715 B CN 102589715B CN 201210049456 A CN201210049456 A CN 201210049456A CN 102589715 B CN102589715 B CN 102589715B
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Abstract
The invention relates to a pyroelectric infrared detection device, comprising a pyroelectric infrared sensor assembly, a Fresnel lens assembly and an amplifying circuit, wherein the pyroelectric infrared sensor assembly comprises a first pyroelectric infrared sensor and a second pyroelectric infrared sensor; parts of detection regions of the first pyroelectric infrared sensor and the second pyroelectric infrared sensor are overlapped to form a first detection region, a second detection region and a third detection region; and the detection of the three detection regions in the middle region between the two pyroelectric infrared sensors is realized by only using the two pyroelectric infrared sensors, so as to determine a detection region and a movement direction of a human or an animal; therefore, the problems of the prior art that the two pyroelectric infrared sensors cannot detect and determine whether the middle region between the two pyroelectric infrared sensors has the human or the animal or not are solved, and the three pyroelectric infrared sensors in the prior art do not need to be used; and the pyroelectric infrared detection device has a simpler structure and saves the production cost.
Description
[technical field]
The invention belongs to infrared detection technique field, particularly a kind of rpyroelectric infrared sniffer and detection method thereof.
[background technology]
At present, usually the pyroelectric infrared sensor (PIR) that the position of animal in three regions and moving direction all must adopt three horizontal positioned will be detected, and adopt the pyroelectric infrared sensor of two horizontal positioned (as Fig. 1) animal position and moving direction in two regions can only be detected, but can not determine the zone line of human or animal whether between two pyroelectric infrared sensors, this zone line is only the shooting area of camera, when being applied in camera, the situation of clapping less than human or animal is settled in frequent generation induction, shooting, video recording is difficult to control, use inconvenience.
[summary of the invention]
In order to solve the above-mentioned technical matters existed in prior art, the invention provides a kind of rpyroelectric infrared sniffer, and based on the detection method of this rpyroelectric infrared sniffer, two pyroelectric infrared sensors can be utilized to realize three search coverages, to detect position and the moving direction of human or animal.
The present invention solves the technical scheme that prior art problem adopts:
A kind of rpyroelectric infrared sniffer, include pyroelectric infrared sensor assembly, Fresnel Lenses assembly and amplifying circuit, described pyroelectric infrared sensor assembly includes the first pyroelectric infrared sensor and the second pyroelectric infrared sensor, and overlap between described first pyroelectric infrared sensor and the search coverage of the second pyroelectric infrared sensor, form the first search coverage, the second search coverage and the 3rd search coverage.
Further, described Fresnel Lenses assembly includes the first separate Fresnel Lenses and the second Fresnel Lenses, and described first Fresnel Lenses and the second Fresnel Lenses focus on described first pyroelectric infrared sensor and the second pyroelectric infrared sensor respectively;
Or described Fresnel Lenses assembly is that holistic described first pyroelectric infrared sensor and the second pyroelectric infrared sensor of making arbitrarily angledly from front can sense the ultrared Fresnel Lenses focusing on and come.
Further, the investigative range of described second search coverage is less than or equal to the coverage of camera lens.
Described sniffer also includes a baffle plate, and described baffle plate is located between described first pyroelectric infrared sensor and the second pyroelectric infrared sensor;
Further, described baffle plate is made by light-proof material.
A kind of detection method based on above-mentioned pyroelectric infrared detector, include following steps: first, by adjusting described first pyroelectric infrared sensor and the relative position between the second pyroelectric infrared sensor and Fresnel Lenses assembly and size, its search coverage is partly overlapped, forms the first search coverage, the second search coverage and the 3rd search coverage; Then, the infrared ray of two described pyroelectric infrared sensors to human or animal's radiation in three search coverages detects; Finally, whether detect ultrared situation according to two described pyroelectric infrared sensors, determine the search coverage at human or animal place.
Further, after determining human or animal place search coverage, also according to the transregional change that the position of human or animal in described first pyroelectric infrared sensor and the second pyroelectric infrared sensor real-time detection first search coverage, the second search coverage and the 3rd search coverage occurs, determine the moving direction of human or animal;
By the size of the height and Fresnel Lenses assembly that change described baffle plate, described first search coverage, the second search coverage and the 3rd search coverage size are adjusted.
The present invention passes through technique scheme, as long as the detection that two pyroelectric infrared sensors realize the zone line comprised between two pyroelectric infrared sensors totally three search coverages can be adopted, determine the search coverage that human or animal is positioned at and moving direction, both solved in prior art and adopted two pyroelectric infrared sensors to detect, whether the zone line determining between them has the problem of human or animal, again without the need to adopting three pyroelectric infrared sensors as prior art, structure is simpler, also save production cost, and the second search coverage size, ensure the coverage not exceeding camera lens, would not detect human or animal but clap less than situation occur, shooting, video recording effect is secure, use more convenient, add adjustable baffle plate and Fresnel Lenses, make the dirigibility of this sniffer strong, apply more extensive.
[accompanying drawing explanation]
Fig. 1 is the structural representation of current existing rpyroelectric infrared sniffer;
Fig. 2 is the structural representation of a kind of rpyroelectric infrared sniffer embodiment one of the present invention;
Fig. 3 is the structural representation of a kind of rpyroelectric infrared sniffer embodiment two of the present invention;
Fig. 4 is a kind of schematic flow sheet of the detection method based on rpyroelectric infrared sniffer of the present invention.
Figure of description description of symbols:
1, pyroelectric infrared sensor assembly, 11, the first pyroelectric infrared sensor, 12, the second pyroelectric infrared sensor, 13, the first search coverage, 14, the second search coverage, the 15, the 3rd search coverage, 2, Fresnel Lenses assembly, 21, the first Fresnel Lenses, the 22, second Fresnel Lenses.
[embodiment]
Below in conjunction with accompanying drawing, technical solution of the present invention is described in detail.
As shown in fig. 1:
The embodiment of the present invention one provides a kind of rpyroelectric infrared sniffer, include pyroelectric infrared sensor assembly 1, Fresnel Lenses assembly 2 and amplifying circuit (not showing in figure), wherein, pyroelectric infrared sensor assembly 1 is connected with amplifying circuit conducting, include the first pyroelectric infrared sensor 11 and the second pyroelectric infrared sensor 12 along induction direction horizontal positioned, be mainly used in the infrared ray gathering human or animal's radiation in search coverage, overlap between described first pyroelectric infrared sensor 11 and the search coverage of the second pyroelectric infrared sensor 12, form the first search coverage 13, second search coverage 14 and the 3rd search coverage 15, Fresnel Lenses assembly 2 forms primarily of two separate the first Fresnel Lenses 21 and the second Fresnel Lenses 22, first Fresnel Lenses 21 focuses in the sensor measuring unit of the first pyroelectric infrared sensor 11, second Fresnel Lenses 22 focuses in the sensor measuring unit of the second pyroelectric infrared sensor 12, be mainly used in the receiving sensitivity of enhancing first pyroelectric infrared sensor 11 and the second pyroelectric infrared sensor 12.During work, when the infrared ray of human or animal's radiation is focused in the detection unit of pyroelectric infrared sensor assembly 1 by Fresnel Lenses assembly 2, process finally by amplifying circuit, before just can detecting, whether have human or animal.Like this, as long as the detection that this sniffer adopts two pyroelectric infrared sensors to realize the zone line comprised between two pyroelectric infrared sensors totally three search coverages, both solved in prior art and adopted two pyroelectric infrared sensors to detect, determine between them zone line and whether have the problem of human or animal, again without the need to adopting three pyroelectric infrared sensors as prior art, structure is simpler, also saves production cost.
As shown in Figure 2:
The embodiment of the present invention two provides a kind of rpyroelectric infrared sniffer, its structure is substantially identical with embodiment one, include pyroelectric infrared sensor assembly 1, Fresnel Lenses assembly 2 and amplifying circuit (not showing in figure), wherein, pyroelectric infrared sensor assembly 1 is connected with amplifying circuit conducting, include the first pyroelectric infrared sensor 11 and the second pyroelectric infrared sensor 12 of horizontal positioned, and overlap between described first pyroelectric infrared sensor 11 and the search coverage of the second pyroelectric infrared sensor 12, form the first search coverage 13, second search coverage 14 and the 3rd search coverage 15, its difference is, Fresnel Lenses assembly 2 described in the present embodiment two does in aggregates by the first Fresnel Lenses 21 of enforcement one and the second Fresnel Lenses 22, makes the first pyroelectric infrared sensor 11 and the second pyroelectric infrared sensor 12 arbitrarily angledly from front can sense the infrared ray focusing on and come, and, this sniffer also includes an adjustable baffle plate 3, baffle plate 3 is made by light-proof material, and be located at the first pyroelectric infrared sensor 11 and the second pyroelectric infrared sensor 12, to block the part induction angle of the first pyroelectric infrared sensor 11 and the second pyroelectric infrared sensor 12, reach control second search coverage 14 size, it is allowed not exceed the coverage of camera lens, can also according to demand by changing the height of baffle plate 3 and the size of Fresnel Lenses assembly 2, reach adjustment first search coverage 13, the object of the second search coverage 14 and the 3rd search coverage 15 size, dirigibility is strong, apply more extensive.
Certainly, a kind of rpyroelectric infrared sniffer described in the embodiment of the present invention one also can include the described baffle plate 3 the same with example two, and described baffle plate 3 is located between described first pyroelectric infrared sensor 11 and the second pyroelectric infrared sensor 12 equally.
As shown in Figure 3:
The detection method of a kind of rpyroelectric infrared sniffer of the present invention comprises the following steps:
Step a. is by the relative position between adjustment two pyroelectric infrared detectors (first pyroelectric infrared sensor 11 and the second pyroelectric infrared sensor 12) and Fresnel Lenses assembly 2 and size, its search coverage is partly overlapped, forms three search coverages (the first search coverage 13, second search coverage 14 and the 3rd search coverage 15);
The infrared ray of step b. two pyroelectric infrared sensors to human or animal's radiation in three search coverages detects;
Whether step c detects ultrared situation according to two pyroelectric infrared sensors, determine the search coverage at human or animal place, be specially: if only have the first pyroelectric infrared sensor 11 to detect the infrared ray of human or animal's radiation, and the second pyroelectric infrared sensor 12 does not detect, just illustrate that human or animal is in the first search coverage 13; If only have the second pyroelectric infrared sensor 12 to detect the infrared ray of human or animal's radiation, and the first pyroelectric infrared sensor 11 does not detect, just illustrate that human or animal is in the second search coverage 15; If a pyroelectric infrared sensor 11 and the second pyroelectric infrared sensor 12 all detect the infrared ray of human or animal's radiation, just illustrate that human or animal is in the second search coverage 14;
Steps d. according to the transregional change that the position of human or animal in two pyroelectric infrared sensor real-time detections, three search coverages occurs, determine the moving direction of human or animal, namely human or animal learns its moving direction from the order that a search coverage crosses another search coverage.
When this sniffer should in camera time, second search coverage 14 is camera shooting area, its investigative range is preferably less than or equal to the coverage of camera lens, such human or animal just can take pictures or record a video when being in the second search coverage 14, would not detect human or animal but clap less than situation occur, clap photo, video effect secure, use more convenient.Such as: for hunting camera, when animal enters the first search coverage 13 or the 3rd search coverage 15, the power supply of camera can be opened, because digital camera all needs the on time, about being generally for 1 second, (investigative range of the second search coverage 14 can be adjusted to the same or smaller with the scope of taking pictures of camera) when animal enters the second search coverage 14 like this, camera is ready to, and just can take pictures rapidly.
Above content is in conjunction with concrete optimal technical scheme further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (2)
1. the detection method of a rpyroelectric infrared sniffer, it is characterized in that: this rpyroelectric infrared sniffer includes pyroelectric infrared sensor assembly (1), Fresnel Lenses assembly (2) and amplifying circuit, described pyroelectric infrared sensor assembly (1) includes the first pyroelectric infrared sensor (11) and the second pyroelectric infrared sensor (12), overlap between described first pyroelectric infrared sensor (11) and the search coverage of the second pyroelectric infrared sensor (12), form the first search coverage (13), second search coverage (14) and the 3rd search coverage (15), described Fresnel Lenses assembly (2) includes separate the first Fresnel Lenses (21) and the second Fresnel Lenses (22), and described first Fresnel Lenses (21) and the second Fresnel Lenses (22) focus on described first pyroelectric infrared sensor (11) and the second pyroelectric infrared sensor (12) respectively, or described Fresnel Lenses assembly (2) arbitrarily angledly from front can both sense the ultrared Fresnel Lenses focusing on and come for holistic described first pyroelectric infrared sensor (11) and the second pyroelectric infrared sensor (12) of making, and the investigative range of described second search coverage (14) is less than or equal to the coverage of camera lens, described sniffer also includes a baffle plate (3), and described baffle plate (3) is located between described first pyroelectric infrared sensor (11) and the second pyroelectric infrared sensor (12),
The detection method of described rpyroelectric infrared sniffer includes following steps: first, by adjusting described first pyroelectric infrared sensor (11) and the relative position between the second pyroelectric infrared sensor (12) and Fresnel Lenses assembly (2) and size, its search coverage is partly overlapped, forms the first search coverage (13), the second search coverage (14) and the 3rd search coverage (15); Then, the infrared ray of two described pyroelectric infrared sensors to human or animal's radiation in three search coverages detects; Finally, whether detect ultrared situation according to two described pyroelectric infrared sensors, determine the search coverage at human or animal place;
After determining human or animal place search coverage, also according to the transregional change that the position of described first pyroelectric infrared sensor (11) and the second pyroelectric infrared sensor (12) real-time detection first search coverage (13), the second search coverage (14) and the 3rd search coverage (15) interior human or animal occurs, determine the moving direction of human or animal;
By the size of the height and Fresnel Lenses assembly (2) that change described baffle plate (3), described first search coverage (13), the second search coverage (14) and the 3rd search coverage (15) size are adjusted.
2. detection method according to claim 1, is characterized in that: described baffle plate (3) is made by light-proof material.
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| CN201210049456.8A CN102589715B (en) | 2012-02-29 | 2012-02-29 | Pyroelectric infrared detection device and detection method thereof |
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| WO2019210519A1 (en) * | 2018-05-04 | 2019-11-07 | 深圳钶钽智能技术有限公司 | Space partition detection system and method |
| CN113112750A (en) * | 2021-04-20 | 2021-07-13 | 广东电网有限责任公司 | Safe distance alarm device with adjustable detection range |
| CN113376706A (en) * | 2021-06-11 | 2021-09-10 | 广州华购计算机科技有限公司 | Passenger flow statistical method, device, system, equipment and storage medium |
| CN114251820B (en) * | 2021-12-24 | 2023-04-14 | 珠海格力电器股份有限公司 | Detection device and air conditioner with same |
| CN115683349A (en) * | 2022-10-26 | 2023-02-03 | 郑州炜盛电子科技有限公司 | Human body position detection method, system and device and intelligent household equipment |
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| JP2005181116A (en) * | 2003-12-19 | 2005-07-07 | Sharp Corp | Infrared sensor device |
| JP2012013422A (en) * | 2010-06-29 | 2012-01-19 | Yazaki Corp | Moving direction determining device |
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| US4849635A (en) * | 1986-01-24 | 1989-07-18 | Optex Co., Ltd. | Intruder perceiving apparatus by means of infrared detection |
| CN101782661A (en) * | 2009-09-22 | 2010-07-21 | 奥泰斯电子(东莞)有限公司 | Method for adjusting sensitivity of infrared curtain detector and infrared curtain detector |
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Effective date of registration: 20151223 Address after: Jinwan District Sanzao Town Airport Road 519000 in Guangdong Province, Zhuhai City, No. 288, B building, third floor Patentee after: Lie Ke Electronics Co., Ltd. of Zhuhai City Address before: 519000 Guangdong province Zhuhai City Jiuzhou Road No. 1146 Haizhu building 9A Patentee before: Wang Zhengping |