CN102928091A - Human body detector with shutter device - Google Patents
Human body detector with shutter device Download PDFInfo
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- CN102928091A CN102928091A CN2012104460217A CN201210446021A CN102928091A CN 102928091 A CN102928091 A CN 102928091A CN 2012104460217 A CN2012104460217 A CN 2012104460217A CN 201210446021 A CN201210446021 A CN 201210446021A CN 102928091 A CN102928091 A CN 102928091A
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- shutter device
- shutter
- pyroelectric sensor
- human body
- fixed mount
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Abstract
The invention discloses a human body detector with a shutter device. The human body detector comprises a pyroelectric sensor, a Fresnel lens, a fixing frame, a signal amplifier, a shutter controller and the shutter device, wherein the Fresnel lens is installed on the fixing frame, and the Fresnel lens and the fixing frame defines a detector cavity; the pyroelectric sensor and the shutter device are arranged in the detector cavity and installed on the fixing frame; the shutter device comprises a sheltering piece which is capable of being opened and closed, and the sheltering piece is located in the front of the pyroelectric sensor; the shutter controller and the signal amplifier are installed on the fixing frame; and the shutter controller is used for controlling the sheltering piece which opens and closes the shutter device at certain time intervals. According to the human body detector with the shutter device, the sheltering piece located in the front of the pyroelectric sensor is opened and closed at regular time to imitate a stationary state into a human motion effect so that a human body in a stationary state can be detected. The human body detector is simple in structure and wide in application.
Description
Technical field
The present invention relates to a kind of peoplesniffer, particularly be applied to the peoplesniffer of Smart Home and safety-security area.
Background technology
Pyroelectric sensor claims again infrared sensor of the human body, is widely used in burglar alarm, the guest informs and the infrared field such as non-contact switch.Along with the fast development of intelligent home device, the peoplesniffer that pyroelectric sensor is made has become again the requisite assembly of intelligent home device.The principle of work of pyroelectric sensor is: piezoelectric ceramics class dielectric can keep polarized state after electric polarization, be called spontaneous polarization.Spontaneous polarization raises with temperature and reduces, and reduces to zero at Curie-point temperature.Therefore, when this material is subject to infrared radiation and temperature when raising, surface charge will reduce, and be equivalent to discharge a part of electric charge, so be called pyroelectricity.The electric charge that discharges be can be exchanged into Voltage-output through amplifier.But there is a shortcoming in this device: when radiation continues to act on the pyroelectricity element, when making its surface charge reach balance, just no longer discharge electric charge.Therefore, pyroelectric sensor can not be surveyed constant infrared radiation.Just because of this shortcoming, the human body that the existing peoplesniffer of being made by pyroelectric sensor can only detected event can't be surveyed the human body of stationary state, and insensitive to the detection of the radial motion of human body.Yet in the occasion of part high request, such as, meeting room, office or the higher occasion of other anti-theft grades need a kind of detector that can survey the stationary state human body.
Summary of the invention
Problem to be solved by this invention provides a kind of detector that can survey the stationary state human body.
For addressing the above problem, the scheme that the present invention adopts is:
A kind of peoplesniffer with shutter device comprises: pyroelectric sensor, Fresnel Lenses, fixed mount, signal amplifier, shutter controller, shutter device.Wherein, Fresnel Lenses is installed on the fixed mount, and Fresnel Lenses and fixed mount surround the detector cavity, includes pyroelectric sensor in the detector cavity, shutter device, and pyroelectric sensor, shutter device is installed on the fixed mount.But shutter device comprises the shielding plate of folding, and shielding plate is positioned at the pyroelectric sensor front.Shutter controller and signal amplifier are installed on the fixed mount.Shutter controller and signal amplifier can be positioned at the detector cavity, also can be outside the detector cavity.Signal amplifier is used for amplifying the output voltage of pyroelectric sensor.Shutter controller is used for shutter device was closed and opened in control by certain time interval shielding plate.
The principle that the present invention surveys the illegal state human body is as follows: the infrared ray that human body sends is sent on the pyroelectric sensor of peoplesniffer by Fresnel Lenses, owing to comprise a shutter device of closing and opening by the certain hour interval in the pyroelectric sensor front, the infrared ray that the human body of stationary state sends, can only must arrive pyroelectric sensor in the compartment of terrain, thereby so that the signal that pyroelectric sensor receives and non-constant infrared ray simulate movement effects thereby the stationary state human body is sent the infrared ray that arrives pyroelectric sensor.
Technique effect of the present invention:
The peoplesniffer of band shutter device of the present invention is positioned at shutter device before the pyroelectric sensor by timing switching, stationary state is simulated the effect of human motion, so that peoplesniffer of the present invention not only can be surveyed the human body of motion state, can also survey the human body of stationary state.The present invention just adds a shutter device before existing peoplesniffer, thereby simple in structure, and is with a wide range of applications, and has satisfied the demanding use occasion of detection accuracy, brings high-quality and experience high-intelligentization for household and security protection.
Description of drawings
Fig. 1 is structural representation of the present invention.Wherein Fresnel Lenses is hemispheric thin slice.
Fig. 2 is structural representation of the present invention.Wherein Fresnel Lenses is plane lamina.
Fig. 3 is the structural representation of diaphragm shutter of the present invention when closing.
Fig. 4 is the structural representation of diaphragm shutter of the present invention when opening.
Fig. 5 is the structural representation of curtain shutter of the present invention when closing.
Fig. 6 is the structural representation of curtain shutter of the present invention when closing.
Fig. 7 is the side-looking structural representation of the embodiment of the invention 4.Wherein shutter device is the vibrating type shutter.
Fig. 8 is the structural representation of vibrating type shutter of the present invention.
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further the present invention is elaborated.
The basic structure of the peoplesniffer with shutter device of the present invention such as Fig. 1, Fig. 2, shown in Figure 7, comprises pyroelectric sensor 1, Fresnel Lenses 2, shutter device 3, fixed mount 4, signal amplifier 5, shutter controller 6.Wherein, Fresnel Lenses 2 is installed on the fixed mount 4, and Fresnel Lenses 2 surrounds the detector cavity with fixed mount 4.Pyroelectric sensor 1 and shutter device 3 are positioned at the detector cavity.The Fresnel Lenses 2 that Fig. 1 and Fig. 7 provide is hemispheric thin slice, and its detector cavity also is semisphere.The Fresnel Lenses 2 that Fig. 2 provides is plane lamina, 4 layers of tubular or square of fixed mount.Those skilled in the art know that the face shaping of peoplesniffer of the present invention can also be other shapes.Pyroelectric sensor 1 and shutter device 3 all are mounted and fixed on the fixed mount 4.Wherein, but shutter device 3 comprises the shielding plate 31 of folding, and shielding plate 31 is positioned at before the pyroelectric sensor 1.Signal amplifier 5, shutter controller 6 are installed on the fixed mount 4, can be positioned at the detector cavity, also can be positioned at outside the detector cavity.The signal amplifier 5, the shutter controller 6 that provide among Fig. 1 and Fig. 7 all are positioned at outside the detector cavity, and the signal amplifier 5 that provides among Fig. 2, shutter controller 6 all are positioned at the detector cavity.Those skilled in the art know fixed mount 4 except being used for the fixing human detector parts and making up the detector control chamber, also can comprise and be used to peoplesniffer is fixedly mounted on the device that uses point, such as, peoplesniffer is fixed on the wall, or be installed in the device of air conditioner inside.Signal amplifier 5 is used for amplifying the output voltage of pyroelectric sensor 1.Shutter controller 6 is used for shutter device 3 was closed and opened in control by certain time interval shielding plate 31.
Shutter device can adopt the form of diaphragm shutter, and as shown in Figure 3, Figure 4, a plurality of shielding plates 31 are fixed on the shutter base 32, and a plurality of shielding plates 31 surround circular.When shielding plate 31 closes, as shown in Figure 3.When shielding plate 31 is opened, as shown in Figure 4, by the shutter device of opening, can see inner pyroelectric sensor 1.
Shutter device can adopt the form of curtain shutter, and such as Fig. 5, shown in Figure 6, a plurality of shielding plates 31 are fixed on the shutter base 32, and a plurality of shielding plates 31 are the heavy curtain shape.When shielding plate 31 closes, as shown in Figure 5.When shielding plate 31 is opened, as shown in Figure 6, by the shutter device of opening, can see inner pyroelectric sensor 1.
Shutter device such as Fig. 7, shown in Figure 8, comprises shielding plate 31 and concussion motor 33.Concussion motor 33 is installed on the fixed mount 4, and shielding plate 31 is installed in the rotating shaft of concussion motor 33.Under the control of shutter controller 6, the rotating shaft of concussion motor 33 is done concussion and is swung, swing so that shielding plate 31 is done concussion before pyroelectric sensor 1, cover pyroelectric sensor 1 a little while, open pyroelectric sensor 1 can normally receive human body infrared a little while.
Comprehensively above-mentioned, the form of shutter device is a lot, all is respectively to have utilized existing camera shutter technology among the embodiment 2 and 3.And in fact, it is a variety of that the camera shutter apparatus structure has, and those skilled in the art know and may be used to the present invention.
Claims (4)
1. the peoplesniffer with shutter device is characterized in that, comprising: pyroelectric sensor, Fresnel Lenses, fixed mount, signal amplifier, shutter controller, shutter device; Wherein, Fresnel Lenses is installed on the fixed mount, and Fresnel Lenses and fixed mount surround the detector cavity; Include pyroelectric sensor and shutter device in the detector cavity; Pyroelectric sensor and shutter device are installed on the fixed mount; But shutter device comprises the shielding plate of folding, and shielding plate is positioned at the pyroelectric sensor front; Shutter controller and signal amplifier are installed on the fixed mount; Shutter controller is used for shutter device was closed and opened in control by certain time interval shielding plate.
2. the peoplesniffer with shutter device as claimed in claim 1 is characterized in that, described shutter device is diaphragm shutter.
3. the peoplesniffer with shutter device as claimed in claim 1 is characterized in that, described shutter device is curtain shutter.
4. the peoplesniffer with shutter device as claimed in claim 1 is characterized in that, described shutter device also comprises the concussion motor; Described shielding plate is done concussion and is swung before pyroelectric sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104460217A CN102928091A (en) | 2012-11-09 | 2012-11-09 | Human body detector with shutter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104460217A CN102928091A (en) | 2012-11-09 | 2012-11-09 | Human body detector with shutter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102928091A true CN102928091A (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104460217A Pending CN102928091A (en) | 2012-11-09 | 2012-11-09 | Human body detector with shutter device |
Country Status (1)
| Country | Link |
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| CN (1) | CN102928091A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5134292A (en) * | 1989-02-07 | 1992-07-28 | Nippon Mining Co., Ltd. | Moving object detector and moving object detecting system |
| US5703368A (en) * | 1995-10-04 | 1997-12-30 | Optex Co., Ltd. | Passive-type infrared sensor system for detecting human body |
| JP2012202783A (en) * | 2011-03-25 | 2012-10-22 | Casio Comput Co Ltd | Detection device |
| CN202974450U (en) * | 2012-11-09 | 2013-06-05 | 南京天溯自动化控制系统有限公司 | People-sniffer with shutter device |
-
2012
- 2012-11-09 CN CN2012104460217A patent/CN102928091A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5134292A (en) * | 1989-02-07 | 1992-07-28 | Nippon Mining Co., Ltd. | Moving object detector and moving object detecting system |
| US5703368A (en) * | 1995-10-04 | 1997-12-30 | Optex Co., Ltd. | Passive-type infrared sensor system for detecting human body |
| JP2012202783A (en) * | 2011-03-25 | 2012-10-22 | Casio Comput Co Ltd | Detection device |
| CN202974450U (en) * | 2012-11-09 | 2013-06-05 | 南京天溯自动化控制系统有限公司 | People-sniffer with shutter device |
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Application publication date: 20130213 |