CN202903337U - Static human body detector based on electromagnet - Google Patents
Static human body detector based on electromagnet Download PDFInfo
- Publication number
- CN202903337U CN202903337U CN 201220617453 CN201220617453U CN202903337U CN 202903337 U CN202903337 U CN 202903337U CN 201220617453 CN201220617453 CN 201220617453 CN 201220617453 U CN201220617453 U CN 201220617453U CN 202903337 U CN202903337 U CN 202903337U
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- China
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- pyroelectric sensor
- electromagnet
- human body
- fixed mount
- shielding plate
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Abstract
The utility model discloses a static human body detector based on electromagnets. The static human body detector comprises a pyroelectric sensor, a Fresnel lens, a fixed mount, a signal amplifier, a shielding sheet, electromagnets, and an electromagnet controller, wherein the Fresnel lens is installed on the fixed mount, and the Fresnel lens and the fixed mount form a detector cavity. In the detector cavity, the pyroelectric sensor, the shielding sheet, and the electromagnets are disposed. The pyroelectric sensor, the shielding sheet, and the electromagnets are installed on the fixed mount. The shielding sheet is disposed in front of the pyroelectric sensor. The electromagnet controller and the signal amplifier are fixed on the fixed mount. The signal amplifier is used to amplify voltage output by the pyroelectric sensor. The electromagnet controller is used to control to drive the electromagnets at a certain interval, so that the electromagnets drive the shielding sheet to move back and forth. Through the shielding sheet which moves back and forth shielding the pyroelectric sensor at intervals, the static human body detector simulates human body moving effect, so that the static human body detector can detect static state human bodies.
Description
Technical field
The utility model relates to a kind of peoplesniffer, particularly is 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, therefore 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 in the utility model provides a kind of detector that can survey the stationary state human body.
For addressing the above problem, the scheme that the utility model adopts is:
A kind of static human body detector based on electromagnet comprises: pyroelectric sensor, Fresnel Lenses, fixed mount, signal amplifier, shielding plate, electromagnet, electromagnet controller.Wherein, Fresnel Lenses is installed on the fixed mount, and Fresnel Lenses and fixed mount surround the detector cavity, includes pyroelectric sensor, shielding plate, electromagnet in the detector cavity, and pyroelectric sensor, shielding plate, electromagnet are installed on the fixed mount.Shielding plate is positioned at the pyroelectric sensor front.Electromagnet controller and signal amplifier are installed on the fixed mount.Electromagnet 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.Electromagnet controller is used for control by the certain time interval drive magnetic, makes it drive shielding plate and moves around.
The principle that the utility model is surveyed the stationary state human body is as follows: under the control of electromagnet controller, electromagnet moves by driving shielding plate by the certain hour interval, the infrared ray that human body sends is sent on the pyroelectric sensor of peoplesniffer by Fresnel Lenses, because in moving around of the shielding plate of 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 utility model:
Peoplesniffer of the present utility model moves by the magnet control shielding plate, stationary state is simulated the effect of human motion, so that peoplesniffer of the present utility model not only can be surveyed the human body of motion state, can also survey the human body of stationary state.
Description of drawings
Fig. 1 is structural representation of the present utility model.Wherein Fresnel Lenses is hemispheric thin slice.
Fig. 2 is structural representation of the present utility model.Wherein Fresnel Lenses is plane lamina.
Fig. 3 is the perspective view of the utility model embodiment 2.
Fig. 4 is the perspective view of the utility model embodiment 3.
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further the utility model is elaborated.
The utility model such as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, comprises pyroelectric sensor 1, Fresnel Lenses 2, shielding plate 3, fixed mount 4, signal amplifier 5, electromagnet controller 6, electromagnet 7 based on the basic structure of the static human body detector of electromagnet.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, shielding plate 3 and electromagnet 7 are positioned at the detector cavity.The Fresnel Lenses 2 that Fig. 1 provides 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.The face shaping of peoplesniffer can also be other shapes, and the face shaping that it will be appreciated by those skilled in the art that peoplesniffer does not consist of the restriction to the utility model claim.Pyroelectric sensor 1 is mounted and fixed on the fixed mount 4.Shielding plate 3 is positioned at before the pyroelectric sensor 1, is installed on the slide bar 32, can move along slide bar 32.Slide bar 32 is fixed on the fixed mount 4 by bracing frame 31.Electromagnet 7 is positioned at the end of slide bar 32, is used for attracting or repelling shielding plate 3, and shielding plate 3 is slidably reciprocated along slide bar 32.Signal amplifier 5, electromagnet 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 electromagnet controller 6 that provide among Fig. 1 all are positioned at outside the detector cavity, and the signal amplifier 5 that provides among Fig. 2, Fig. 3 and Fig. 4, electromagnet controller 6 all are positioned at the detector cavity.Fixed mount 4 is 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 fixing on the wall, or be installed in the device of air conditioner inside, those skilled in the art know, these do not consist of the restriction to the utility model claim.Signal amplifier 5 is used for amplifying the output voltage of pyroelectric sensor 1, is connected with pyroelectric sensor 1 by data line.Electromagnet controller 6 is used for control by 7 attractions of certain time interval control electromagnet or repels shielding plate, electromagnet controller 6 is connected with electromagnet 7 by power lead, electromagnet controller 6 is by the magnetic of control electromagnet 7, and then the slip of driving shielding plate 3.When shielding plate 3 blocked pyroelectric sensor 1, the infrared ray that human body sends can't arrive pyroelectric sensor 1; When shielding plate 3 did not block pyroelectric sensor 1, the infrared ray that human body sends can arrive pyroelectric sensor 1.When electromagnet controller 6 was controlled constantly shielding plate 3 and moved around, the infrared ray that the human body of stationary state sends can only must arrive pyroelectric sensor 1 in the compartment of terrain.Aforementioned interlude can be 0.3s-3s.
On the basis of embodiment 1, as shown in Figure 3, also comprise spring 33.Spring 33 is enclosed within a side of slide bar 32, and electromagnet 7 is positioned at its opposite side.One end of spring 33 connects bracing frame 31 1 ends and connects shielding plate 3.Shielding plate 3 is fabricated from iron.When starting electromagnet 7, electromagnet 7 attracts the shielding plate 3 of irony, covers pyroelectric sensor 1, when closing the magnetic of electromagnet 7, electromagnet 7 discharges the shielding plate 3 of irony, and the shielding plate 3 of irony along slide bar 32 rollbacks, discharges pyroelectric sensor 1 under the retraction traction of spring 33.Control constantly electromagnet 7 opening and closing when electromagnet controller 6, shielding plate 3 moves around, so that pyroelectric sensor 1 is blocked in shielding plate 3 compartment of terrains, so that the infrared ray that the human body of stationary state sends can only must arrive pyroelectric sensor 1 in the compartment of terrain.
Those skilled in the art know, above-mentioned spring 33 can also be replaced with other resilient materials, such as bungee etc.
On the basis of embodiment 1, as shown in Figure 4, the magnetic direction that the both sides of slide bar 32 all are equipped with 7, two electromagnet 7 of electromagnet is identical, all along the glide direction of shielding plate 3 at slide bar 32.Shielding plate 3 is permanent magnets of being made by permanent magnetic material, and its magnetic direction is along the glide direction of shielding plate 3 at slide bar 32.Electromagnet controller 6 is controlled the magnetic field of two electromagnet 7 constantly, so that its magnetic direction changes back and forth, in the regular hour, its magnetic direction is identical with the direction in the magnetic field of shielding plate 3, then at another section in the period, its magnetic direction is identical with the magnetic direction of shielding plate 3.So shielding plate 3 is along with the variation of the magnetic direction of two electromagnet 7 moves around at slide bar 32, so that shielding plate 3 compartment of terrains cover pyroelectric sensor 1, so that the infrared ray that the human body of stationary state sends can only must arrive pyroelectric sensor 1 in the compartment of terrain.
Claims (1)
1. the static human body detector based on electromagnet is characterized in that, comprising: pyroelectric sensor, Fresnel Lenses, fixed mount, signal amplifier, shielding plate, electromagnet, electromagnet controller; Wherein, Fresnel Lenses is installed on the fixed mount, and Fresnel Lenses and fixed mount surround the detector cavity, includes pyroelectric sensor, shielding plate, electromagnet in the detector cavity, and pyroelectric sensor, shielding plate, electromagnet are installed on the fixed mount; Shielding plate is positioned at the pyroelectric sensor front; Electromagnet controller and signal amplifier are installed on the fixed mount; Described signal amplifier is used for amplifying the output voltage of pyroelectric sensor, and described electromagnet controller is used for control by the certain time interval drive magnetic, makes it drive shielding plate and moves around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220617453 CN202903337U (en) | 2012-11-21 | 2012-11-21 | Static human body detector based on electromagnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220617453 CN202903337U (en) | 2012-11-21 | 2012-11-21 | Static human body detector based on electromagnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202903337U true CN202903337U (en) | 2013-04-24 |
Family
ID=48123996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220617453 Expired - Lifetime CN202903337U (en) | 2012-11-21 | 2012-11-21 | Static human body detector based on electromagnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202903337U (en) |
-
2012
- 2012-11-21 CN CN 201220617453 patent/CN202903337U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130424 |