Optical filter assembly for pir sensor, pir sensor device and video camera

Abstract

The utility model relates to a kind of light filter assembly for PIR sensor, PIR sensor device and camera, light filter assembly is assembled between the sensor main body and lens of PIR sensor device, sensor main body includes first optical filter, light filter assembly includes second optical filter and mounting bracket, second optical filter is installed in mounting bracket.The utility model's light filter assembly for PIR sensor, PIR sensor device and camera, the setting of second optical filter, so that second optical filter can be under the direct sunlight of sun, strong light or white light direct irradiation first filters, further filters by first optical filter, two times of filtering can weaken the interference of the direct sunlight of sun, strong light or white light direct irradiation to PIR sensor device, so that the condition of false triggering can be reduced, so that PIR sensor device is not easy to false triggering and open camera, avoid user to receive a lot of useless picture, will not consume the power supply of camera too much, improve user experience.

Description

Technical Field

[0001] This utility model relates to the field of infrared sensor technology, and more specifically, to a filter component for a PIR sensor, a PIR sensor device, and a camera. Background Technology

[0002] PIR sensors, short for Passive Infrared, are also known as pyroelectric infrared sensors. They are sensors that detect infrared thermal radiation by using materials with good pyroelectric properties as the core. They are mainly used to detect the infrared radiation of people, animals, and other objects that emit heat, in order to determine whether there are people or other animals in a certain space. They are widely used in bird feeders for feeding and watching birds.

[0003] When the PIR sensor of the bird feeder camera detects birds in the range of the bird feeder, the camera will automatically turn on. However, the existing PIR sensor is often prone to falsely triggering the camera when it is interfered with by direct sunlight, strong light or white light, etc., even when no object is detected. This results in the user receiving a lot of useless images and excessive power consumption of the camera, leading to a poor user experience. Utility Model Content

[0004] The purpose of this invention is to provide a filter component for a PIR sensor, a PIR sensor device, and a camera to solve the problem that the PIR sensor is often accidentally triggered and turns on when it is exposed to direct sunlight, strong light, or white light, even when no object is detected. This results in the user receiving a lot of useless images and excessive power consumption of the camera, leading to a poor user experience.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A filter assembly for a PIR sensor is assembled between the sensor body and the lens of a PIR sensor device. The sensor body includes a first filter, and the filter assembly includes a second filter and a mounting bracket. The second filter is mounted on the mounting bracket, and the mounting bracket can be assembled and connected to at least one of the sensor body or the lens.

[0007] In one embodiment, the mounting bracket has a first end and a second end opposite to each other along its axial direction. The first end can be connected to the sensor body, and the second end can be connected to the lens. The mounting bracket includes a connected bracket and a mounting block. The mounting block is disposed in the middle of the bracket and extends to the second end. The mounting block is provided with a first mounting window, and the second filter is mounted in the first mounting window.

[0008] In one embodiment, the first end is provided with a receiving groove, and a portion of the structure of the sensor body can be accommodated in the receiving groove.

[0009] In one embodiment, the second end is provided with a mounting groove, and the mounting groove surrounds the mounting block, and a portion of the lens structure can be snapped into the mounting groove.

[0010] In one embodiment, the mounting bracket further includes a waterproof ring fitted onto the outer wall of the mounting block.

[0011] In one embodiment, the bracket is provided with a groove that can be fitted and assembled with a protrusion.

[0012] In one embodiment, the first filter and the second filter are spaced apart, and the distance between the first filter and the second filter is set to be greater than 0.5 mm.

[0013] A PIR sensor device includes: a PIR sensor filter assembly, a sensor body, and a lens, wherein the PIR sensor filter assembly is disposed between the sensor body and the lens; the sensor body includes a first filter and a second mounting window, wherein the first filter is mounted within the second mounting window.

[0014] In one embodiment, the lens includes a connected latching portion and a lens portion, the latching portion having a plurality of deformation grooves along its circumference, the deformation grooves extending along the height direction of the lens.

[0015] A camera, comprising:

[0016] Camera body;

[0017] The aforementioned PIR sensor device is disposed within the camera body;

[0018] The camera is located inside the camera body and is electrically connected to the PIR sensor device.

[0019] As can be seen from the above technical solution, the present invention has at least the following advantages and positive effects compared with the prior art: The PIR sensor filter assembly, PIR sensor device and camera of the present invention are assembled between the sensor body and lens of the PIR sensor device. The sensor body includes a first filter, and the filter assembly includes a second filter. The setting of the second filter allows the second filter to filter light first under direct sunlight, strong light or direct white light, and then the first filter further filters light. The two filtering can reduce the interference of direct sunlight, strong light or direct white light on the PIR sensor device, thereby reducing the situation of false triggering. This makes it less likely for the PIR sensor device to be falsely triggered and open the camera, avoids users receiving a lot of useless images, does not consume too much power of the camera, and improves the user experience. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of the overall structure of the filter assembly for the PIR sensor in one embodiment of the present invention;

[0022] Figure 2 for Figure 1 The diagram shows a structural schematic of the filter assembly for the PIR sensor from another angle.

[0023] Figure 3 A schematic diagram of the overall structure of the PIR sensor device provided by this utility model;

[0024] Figure 4 for Figure 3 The diagram shows the exploded structure of the PIR sensor device.

[0025] Figure 5 for Figure 3 A schematic cross-sectional view of the PIR sensor device shown.

[0026] Figure 6 A schematic diagram of the overall structure of the camera provided by this utility model;

[0027] Figure 7 for Figure 6 The diagram shows the exploded structure of the camera.

[0028] Figure 8 for Figure 6 The diagram shows a cross-sectional view of the camera.

[0029] The annotations in the attached figures are explained as follows:

[0030] 10. Filter assembly; 100. Second filter; 200. Mounting bracket; 210. First end; 211. Receiving groove; 220. Second end; 221. Mounting groove; 230. Bracket; 231. Groove; 240. Mounting block; 241. First mounting window; 250. Waterproof ring; 20. PIR sensor device; 21. Sensor body; 22. Lens; 23. First filter; 24. Snap-fit ​​part; 25. Lens part; 26. Deformation groove; 27. Tube cap; 28. Metal tube seat; 29. ​​Receiving cavity; 30. Second mounting window; 31. Base; 32. Metal tube foot; 33. Mounting hole; 40. Camera; 41. Camera body; 42. Camera lens; 43. Protrusion; 44. Circuit board; 45. Antenna. Detailed Implementation

[0031] To more clearly explain the purpose, technical solution, and advantages of this utility model, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein. On the contrary, these embodiments are provided to make this utility model more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0032] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a full understanding of embodiments of the present invention. However, those skilled in the art will recognize that the technical solutions of the present invention can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., may be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of the present invention.

[0033] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0034] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily need to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0035] The present invention will be described in detail below with reference to specific embodiments:

[0036] Example 1

[0037] Please refer to the following first. Figures 1 to 4 This invention provides a filter assembly 10 for a PIR sensor. The filter assembly 10 is installed between the sensor body 21 and the lens 22 of a PIR sensor device 20. The sensor body 21 includes a first filter 23. The filter assembly 10 can perform filtering first, and then the first filter 23 further filters the light on the basis of the filtering by the filter assembly 10, so as to reduce the possibility of false triggering of the PIR sensor device 20.

[0038] refer to Figure 1 and Figure 2 The filter assembly 10 includes a second filter 100 and a mounting bracket 200. The second filter 100 is mounted on the mounting bracket 200, and the mounting bracket 200 supports the second filter 100. The mounting bracket 200 can be assembled and connected to at least one of the sensor body 21 or the lens 22. For example... Figure 3 and Figure 4 This illustrates the assembly and connection of the mounting bracket 200 with the sensor body 21 and the lens 22. Of course, the assembly and connection between the mounting bracket 200 and the sensor body 21 can be an assembly connection or a single integral connection.

[0039] It should be noted that the second filter 100 is designed to filter light under direct sunlight, strong light, or direct white light before being further filtered by the first filter 23. This double filtering reduces the interference of direct sunlight, strong light, or direct white light on the PIR sensor device 20, thereby reducing false triggering and making it less likely for the PIR sensor device 20 to be accidentally triggered and turn on the camera. This prevents users from receiving a lot of useless images, reduces excessive power consumption of the camera, and improves the user experience.

[0040] refer to Figure 1 and Figure 2 The mounting bracket 200 has a first end 210 and a second end 220 arranged along its axial direction. The first end 210 can be used to connect to the sensor body 21, and the second end 220 can be connected to the lens 22.

[0041] refer to Figure 1 and Figure 2 It should be noted that the mounting bracket 200 includes a connected bracket 230 and a mounting block 240. The mounting block 240 is located in the middle of the bracket 230 and extends to the second end 220. The mounting block 240 is provided with a first mounting window 241, and the second filter 100 is mounted on the first mounting window 241.

[0042] refer to Figure 2 and Figure 5 The first end 210 is provided with a receiving groove 211, in which part of the structure of the sensor body 21 can be accommodated to realize the assembly connection of the sensor body 21 and the mounting bracket 200.

[0043] refer to Figure 5 It should be noted that after the sensor body 21 is housed in the receiving groove 211, the first filter 23 and the second filter 100 are spaced apart, and the distance between the first filter 23 and the second filter 100 is set to be greater than 0.5 mm. This arrangement of the first filter 23 and the second filter 100 at a certain distance ensures that after light passes through the second filter 100, it is refracted into the air medium, and then refracted back to the first filter 23 by the air medium, undergoing refraction, reflection, and interference before being filtered again, thus achieving a better filtering effect.

[0044] refer to Figure 1 and Figure 5 The second end 220 is provided with a mounting groove 221, which surrounds the mounting block 240. Part of the structure of the lens 22 can be snapped into the mounting groove 221 to achieve the installation and fixation of the lens 22 and the mounting bracket 200. It can be understood that the mounting groove 221 may not be provided. For example, one of the lens 22 and the second end 220 is provided with a snap-fit ​​block, and the other is provided with a snap-fit ​​groove. The snap-fit ​​block snaps into the snap-fit ​​groove to achieve the installation and fixation of the lens 22 and the mounting bracket 200. Any solution that can achieve the installation and fixation of the lens 22 and the mounting bracket 200 should be protected.

[0045] refer to Figure 1 and Figure 5The mounting bracket 200 also includes a waterproof ring 250, which is fitted onto the outer wall of the mounting block 240. When the lens 22 is installed in the mounting groove 221, the lens 22 presses against the waterproof ring 250 to reduce the gap between the lens 22 and the mounting block 240, thus securing the lens 22 to the mounting block 240. The waterproof ring 250 also provides waterproofing, effectively preventing rainwater from entering through the gap between the lens 22 and the mounting block 240 and wetting the second filter 100. It is understandable that, without considering the secure installation and waterproofing between the lens 22 and the mounting block 240, the waterproof ring 250 may not be necessary; any solution that allows the lens 22 to be connected to the mounting bracket 200 should be protected.

[0046] Example 2

[0047] refer to Figure 3 and Figure 4 This utility model also provides a PIR sensor device 20, which is a sensor for detecting infrared thermal radiation made of a material with good pyroelectric properties as the core. It is used to detect the infrared radiation of people, animals, and other objects with thermal radiation in order to determine whether birds are present in a certain space.

[0048] refer to Figure 3 and Figure 4 The PIR sensor device 20 includes the aforementioned PIR sensor filter assembly 10, sensor body 21, and lens 22. The PIR sensor filter assembly 10 is disposed between the sensor body 21 and the lens 22. The lens 22 is disposed at the end of the sensor body 21 away from the circuit board, and the lens 22 is used to efficiently focus the infrared thermal radiation energy emitted by the bird onto the sensor body 21.

[0049] refer to Figure 3 and Figure 4 It should be noted that the lens 22 includes a connected snap-fit ​​part 24 and a lens part 25, with the lens part 25 snapped into the aforementioned mounting groove 221.

[0050] refer to Figure 3 and Figure 4 It should be noted that in this embodiment, the snap-fit ​​portion 24 is provided with a plurality of deformation grooves 26 along its circumference. The deformation grooves 26 extend along the height direction of the lens 22. When the lens 22 is installed in the mounting groove 221 and fitted onto the waterproof ring 250, the snap-fit ​​portion 24 undergoes elastic deformation, and the groove wall of the deformation groove 26 expands outward. After passing the position of the waterproof ring 250, the groove wall of the deformation groove 26 returns to the position where no elastic deformation occurred. It can be understood that the deformation grooves 26 may not be provided, and any solution in which the snap-fit ​​portion 24 can be installed in the mounting groove 221 should be protected.

[0051] refer to Figure 4 The sensor body 21 includes a cap 27, an infrared sensitive element, a first filter 23, and a metal base 28. The cap 27 and the metal base 28 enclose a receiving cavity 29, in which the infrared sensitive element is housed and electrically connected to the metal base 28. A second mounting window 30 is provided at the end of the cap 27 away from the metal base 28, and the first filter 23 is mounted within the second mounting window 30. It should be noted that the lens 22 efficiently focuses the infrared thermal radiation energy emitted by the bird onto the infrared sensitive element.

[0052] It should be noted that the cap 27 is accommodated in the aforementioned receiving groove 211.

[0053] refer to Figure 4 and Figure 5 It should be noted that the metal socket 28 includes a base 31 and multiple metal pins 32. The base 31 supports the metal pins 32 and has multiple mounting holes 33, the number of which matches the number of metal pins 32. The metal pins 32 pass through the corresponding mounting holes 33, and their opposite ends are connected to the infrared sensing element and the circuit board, respectively. It is understandable that, without considering supporting the metal pins 32, the base 31 may not be necessary; any solution where the metal pins 32 can connect to the circuit board and the infrared sensing element should be protected.

[0054] refer to Figure 4 It should be noted that in this embodiment, the number of mounting holes 33 and metal pins 32 is set to four. It can be understood that in other embodiments, the number of mounting holes 33 and metal pins 32 can also be set to two or six. Any scheme in which the number of mounting holes 33 and the number of metal pins 32 are compatible should be protected.

[0055] Example 3

[0056] refer to Figure 6 and Figure 7This utility model also provides a camera 40 for fixing outdoors to capture photos of birds playing and living outdoors. The camera 40 includes a camera body 41, the aforementioned PIR sensor device 20, and a camera 42. Both the PIR sensor device 20 and the camera 42 are housed within the camera body 41 and are electrically connected. When the PIR sensor device 20 detects a bird, the camera 40 can activate the camera 42 to record images of the birds playing, living, and feeding, and can transmit and share these images to a user-attached electronic device, allowing the user to remotely view the birds' play and daily life. Furthermore, in this embodiment, the camera 40 and the PIR sensor device 20 are equipped with a filter assembly 10, which includes a second filter 100. The second filter 100 allows for filtering under direct sunlight, strong light, or direct white light, followed by further filtering by the first filter 23. This double filtering reduces interference from direct sunlight, strong light, or direct white light on the PIR sensor device 20, thereby reducing false triggering and making it less likely for the PIR sensor device 20 to accidentally open the camera. This prevents users from receiving many useless images, reduces excessive power consumption of the camera, and improves the user experience.

[0057] refer to Figure 8 It should be noted that the camera body 41 is provided with a protrusion 43, and the bracket 230 is provided with a groove 231. The groove 231 can be adapted and assembled with the protrusion 43, so that the mounting bracket 200 can be stably fixed on the camera body 41.

[0058] refer to Figure 7 The camera 40 also includes a circuit board 44, on which the PIR sensor device 20 and the camera 42 are electrically connected. The signal from the PIR sensor device 20 can be transmitted through the circuit board 44.

[0059] refer to Figure 6 and Figure 7 It should be noted that in this embodiment, the camera 40 also includes an antenna 45, which is electrically connected to the circuit board 44. The images captured by the camera 42 can be transmitted to the user's electronic device through the antenna 45, allowing the user to remotely watch the birds playing and living.

[0060] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the claims. It should be understood that the invention is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A filter assembly for a PIR sensor, assembled between the sensor body and a lens of a PIR sensor device, wherein the sensor body includes a first filter, characterized in that, The filtering assembly includes a second filter and a mounting bracket; the second filter is mounted on the mounting bracket, and the mounting bracket can be assembled and connected to at least one of the sensor body or the lens.

2. The filter assembly for a PIR sensor according to claim 1, characterized in that, The mounting bracket has a first end and a second end arranged along its axial direction. The first end can be connected to the sensor body, and the second end can be connected to the lens. The mounting bracket includes a connected bracket and a mounting block. The mounting block is disposed in the middle of the bracket and extends to the second end. The mounting block is provided with a first mounting window, and the second filter is mounted in the first mounting window.

3. The filter assembly for a PIR sensor according to claim 2, characterized in that, The first end is provided with a receiving groove, and part of the structure of the sensor body can be accommodated in the receiving groove.

4. The filter assembly for a PIR sensor according to claim 2, characterized in that, The second end is provided with a mounting groove, and the mounting groove is arranged around the mounting block, and part of the lens structure can be snapped into the mounting groove.

5. The filter assembly for a PIR sensor according to claim 4, characterized in that, The mounting bracket also includes a waterproof ring, which is fitted onto the outer wall of the mounting block.

6. The filter assembly for a PIR sensor according to claim 2, characterized in that, The bracket is provided with a groove that can be fitted and assembled with the protrusion.

7. The filter assembly for a PIR sensor according to claim 1, characterized in that, The first filter and the second filter are spaced apart, and the distance between the first filter and the second filter is set to be greater than 0.5 mm.

8. A PIR sensor device, characterized in that, include: The PIR sensor filter assembly, sensor body, and lens as described in any one of claims 1-7, wherein the PIR sensor filter assembly is disposed between the sensor body and the lens; the sensor body includes a first filter, and the sensor body is provided with a second mounting window, wherein the first filter is mounted in the second mounting window.

9. The PIR sensor device according to claim 8, characterized in that, The lens includes a connected latching part and a lens part. The latching part is provided with a plurality of deformation grooves along its circumference, and the deformation grooves extend along the height direction of the lens.

10. A camera, characterized in that, include: Camera body; The PIR sensor device as described in claim 8 is disposed within the camera body; The camera is located inside the camera body and is electrically connected to the PIR sensor device.

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