CN211528723U - Infrared emitter of infrared pyroelectric sensor - Google Patents
Infrared emitter of infrared pyroelectric sensor Download PDFInfo
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- CN211528723U CN211528723U CN202020571081.1U CN202020571081U CN211528723U CN 211528723 U CN211528723 U CN 211528723U CN 202020571081 U CN202020571081 U CN 202020571081U CN 211528723 U CN211528723 U CN 211528723U
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Abstract
The utility model relates to an infra-red transmitter technical field specifically is an infra-red pyroelectric sensor's infra-red transmitter, including circuit board, sensor and transmitter, welding and electric connection sensor in the middle of the circuit board upper end, bolt fixed connection fresnel lens is passed through in the sensor outside, welds the baffle on the circuit board in the fresnel lens outside, installs the transmitter on the circuit board in the baffle outside, and fresnel lens is the semi-circular cover and establishes in the outside of sensor, and fresnel lens edge protrusion is equipped with the connecting plate, and the connecting plate passes through bolt fixed connection on the circuit board, and beneficial effect does: through adding infrared transmitter, can effectual promotion response effect, at the detection efficiency greatly increased to the non-personage body, the result of use is better, and infrared transmitter can not influence the work of infrared pyroelectric sensor itself.
Description
Technical Field
The utility model relates to infra-red transmitter technical field specifically is an infra-red heat release electric sensor's infra-red transmitter.
Background
The pyroelectric infrared sensor structurally introduces a field effect tube, and aims to complete impedance transformation. Since the thermoelectric element outputs a charge signal and cannot be directly used, it needs to be converted into a voltage form by a resistor. Therefore, the introduced N-channel junction field effect transistor should be connected in a common-drain mode to complete impedance transformation. The pyroelectric infrared sensor consists of a sensing detection element, an interference filter and a field-effect tube matcher. When the pyroelectric detector is designed, a high-temperature pyroelectric material is made into a thin sheet with a certain thickness, metal electrodes are plated on two sides of the thin sheet, and then the thin sheet is polarized by applying electricity, so that the pyroelectric detector is manufactured.
Infrared pyroelectric sensor can only accept infrared ray when using, and is more sensitive to the infrared ray of human transmission, can effectively shield the infrared ray of other objects, reduces the interference, but is more weak in the response to some objects, adds infrared emitter around infrared pyroelectric sensor to add infrared receiver in corresponding position and can effectively improve the response sensitivity, can effectively improve the result of use, for this reason, the utility model provides an infrared pyroelectric sensor's infrared emitter is used for solving above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an infrared emitter of infrared pyroelectric sensor to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an infrared emitter of infrared pyroelectric sensor, includes circuit board, sensor and transmitter, welding and electric connection sensor in the middle of the circuit board upper end, bolt fixed connection fresnel lens is passed through in the sensor outside, the welding baffle on the circuit board in the fresnel lens outside, install the transmitter on the circuit board in the baffle outside.
Preferably, the Fresnel lens is arranged on the outer side of the sensor in a semicircular cover mode, a connecting plate is arranged on the edge of the Fresnel lens in a protruding mode, and the connecting plate is fixedly connected to the circuit board through bolts.
Preferably, the baffle is welded on the circuit board outside the sensor in a cylindrical shape, the height of the baffle is greater than that of the sensor, and the baffle is made of a shielding material.
Preferably, the transmitter includes the transmitting chip, transmitting chip welding and electric connection are in circuit board upper end, transmitting chip upper end is inlayed and is had electric connection's infrared diode, transmitting chip upper end outside cover is equipped with fixed casing, the inside draw-in groove that is equipped with of fixed casing, the draw-in groove joint is in the transmitting chip outside, the through-hole has been seted up to fixed casing upper end, infrared diode passes the through-hole and is connected to the outside, the light-reflecting groove has been seted up to the through-hole department in the infrared diode outside, the light-reflecting inslot bonds the reflection worn-out fur, fixed casing outside integrated into one piece is equipped with the fixing base, the fixing base passes through bolt fixed connection in circuit board upper end, the transmitter is equipped with a plurality of groups.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an add infrared emitter, can effectual promotion response effect, at the detection efficiency greatly increased to the non-personage body, the result of use is better, and infrared emitter can not influence the work of infrared pyroelectric sensor itself.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged schematic view of the structure at a in fig. 1.
In the figure: the device comprises a circuit board 1, a sensor 2, a Fresnel lens 3, a baffle 4, an emitter 5, an emission chip 6, an infrared diode 7, a fixed shell 8, a fixed seat 9, a clamping groove 10 and a reflection light groove 11.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a technical solution: the utility model provides an infrared emitter of infrared pyroelectric sensor, includes circuit board 1, sensor 2 and transmitter 5, and welding and electric connection sensor 2 in the middle of the 1 upper end of circuit board, bolt fixed connection fresnel lens 3 is passed through in the 2 outsides of sensor, and welding baffle 4 on the circuit board 1 in the 3 outsides of fresnel lens, installs transmitter 5 on the circuit board 1 in the 4 outsides of baffle.
The utility model discloses can further set up to, the outer side at sensor 2 is established to the 3 semicircular cover in shape of fresnel lens, and 3 marginal bulges in fresnel lens are equipped with the connecting plate, and the connecting plate passes through bolt fixed connection on circuit board 1, can effectively increase sensor 2's result of use through fresnel lens 3 to can shield partly outside interference, make sensor 2 received signal's effect better.
The utility model discloses can further set up to, baffle 4 is cylindric welding on the circuit board 1 in the sensor 2 outside, and baffle 4 highly is greater than sensor 2's height, and baffle 4 is made by shielding material, can block the infrared ray of outside transmitter 5 transmission through baffle 4, prevents that transmitter 5 from interfering with sensor 2's use, guarantees sensor 2's normal operating condition.
The utility model can be further arranged that the emitter 5 comprises an emitting chip 6, the emitting chip 6 is welded and electrically connected on the upper end of the circuit board 1, the electrically connected infrared diode 7 is inlaid on the upper end of the emitting chip 6, the outer side of the upper end of the emitting chip 6 is sleeved with a fixed shell 8, the fixed shell 8 is internally provided with a clamping groove 10, the clamping groove 10 is clamped on the outer side of the emitting chip 6, the upper end of the fixed shell 8 is provided with a through hole, the infrared diode 7 passes through the through hole and is connected to the outer side, the through hole on the outer side of the infrared diode 7 is provided with a reflecting light groove 11, a reflecting light plate is adhered in the reflecting light groove 11, the outer side of the fixed shell 8 is integrally formed and provided with a fixed seat 9, the fixed seat 9 is fixedly connected on the upper end of the circuit board 1 through bolts, the emitter 5 is provided, can effectively increase the holistic result of use of sensor 2, increase and survey application scope, and strengthen and visit the side effect, it is more convenient during the use.
The working principle is as follows: the during operation, on current pyroelectric infrared sensor 2's basis, install infrared transmitter 5 on every side, can normally receive infrared ray through sensor 2, can launch response infrared light beam through the transmitter, the object to sensor 2 can not effectively survey surveys the response, increase the result of use, strengthen the result of use of sensor greatly, and be equipped with baffle 4 around sensor 2, can prevent the infrared ray interference sensor 2's that transmitter 5 launches use through baffle 4, it is more sensitive to make the use, it is not influenced to guarantee that sensor 2 original function.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. An infrared emitter of an infrared pyroelectric sensor comprises a circuit board (1), a sensor (2) and an emitter (5), and is characterized in that: the sensor is characterized in that the sensor (2) is welded and electrically connected in the middle of the upper end of the circuit board (1), the Fresnel lens (3) is fixedly connected to the outer side of the sensor (2) through bolts, the baffle (4) is welded to the circuit board (1) on the outer side of the Fresnel lens (3), and the transmitter (5) is installed on the circuit board (1) on the outer side of the baffle (4).
2. The infrared emitter of the pyroelectric infrared sensor as defined in claim 1, wherein: fresnel lens (3) semicircular cover establishes in the outside of sensor (2), Fresnel lens (3) edge protrusion is equipped with the connecting plate, and the connecting plate passes through bolt fixed connection on circuit board (1).
3. The infrared emitter of the pyroelectric infrared sensor as defined in claim 1, wherein: the sensor is characterized in that the baffle (4) is welded on the circuit board (1) on the outer side of the sensor (2) in a cylindrical shape, the height of the baffle (4) is larger than that of the sensor (2), and the baffle (4) is made of shielding materials.
4. The infrared emitter of the pyroelectric infrared sensor as defined in claim 1, wherein: the emitter (5) comprises an emitting chip (6), the emitting chip (6) is welded and electrically connected to the upper end of the circuit board (1), an infrared diode (7) electrically connected is inlaid at the upper end of the emitting chip (6), a fixed shell (8) is sleeved on the outer side of the upper end of the emitting chip (6), a clamping groove (10) is arranged inside the fixed shell (8), the clamping groove (10) is clamped on the outer side of the emitting chip (6), a through hole is formed in the upper end of the fixed shell (8), the infrared diode (7) penetrates through the through hole to be connected to the outer side, a reflective light groove (11) is formed in the through hole in the outer side of the infrared diode (7), a reflective light plate is adhered in the reflective light groove (11), a fixed seat (9) is integrally formed in the outer side of the fixed shell (8), and the fixed seat (9) is fixedly connected to, the emitters (5) are provided with a plurality of groups, and the emitters (5) are uniformly distributed on the circuit board (1) on the outer ring of the baffle (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020571081.1U CN211528723U (en) | 2020-04-17 | 2020-04-17 | Infrared emitter of infrared pyroelectric sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020571081.1U CN211528723U (en) | 2020-04-17 | 2020-04-17 | Infrared emitter of infrared pyroelectric sensor |
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| CN211528723U true CN211528723U (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020571081.1U Active CN211528723U (en) | 2020-04-17 | 2020-04-17 | Infrared emitter of infrared pyroelectric sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112945401A (en) * | 2021-01-20 | 2021-06-11 | 湖北理工学院 | Human body infrared two-in-one equipment based on pyroelectric infrared sensing |
-
2020
- 2020-04-17 CN CN202020571081.1U patent/CN211528723U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112945401A (en) * | 2021-01-20 | 2021-06-11 | 湖北理工学院 | Human body infrared two-in-one equipment based on pyroelectric infrared sensing |
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