Double-camera doorbell structure with double sensors
By employing a dual PIR sensor structure and an angled mounting position in the smart doorbell, the problem of a single PIR sensor being unable to achieve large-angle and radial triggering is solved, achieving a triggering effect without blind spots and reducing costs.
Patent Information
- Application Number
- CN202520575913.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-28
AI Technical Summary
When existing smart doorbells detect a person entering the door area, a single PIR sensor is insufficient to meet the requirements for large-angle and radial triggering, resulting in false triggering issues, and radar solutions are costly.
It adopts a dual PIR sensor structure, combined with an inclined mounting position and Fresnel lens, to achieve 180° large-angle triggering, while also taking into account the radial maximum distance triggering. The stability of the sensor is ensured through cavity structure and multiple connection methods.
It achieves a triggering effect without blind spots, avoids interference from heat flow and antennas on the sensor, reduces manufacturing costs, and improves the lifespan of the sensor.
Smart Images
Figure CN223942756U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of doorbells, specifically to a dual-camera doorbell structure with dual sensors. Background Technology
[0002] Most current smart doorbells use infrared human body sensors combined with PIR lenses and software algorithms to detect when someone enters the door area. However, some doorbells on the market use radar to detect human body movement, but this increases the cost significantly and also has the problem of false triggers, so most doorbells do not use radar.
[0003] The domestic doorbell market mainly uses a single human infrared sensor + PIR Fresnel lens solution. This solution can meet basic triggering needs. However, as users' triggering scenarios at the door continue to expand, there are deeper requirements for PIR triggering, such as achieving both large-angle triggering and radial triggering.
[0004] Therefore, the current single PIR solution is difficult to meet the practical application needs of the above scenarios. Utility Model Content
[0005] To address the aforementioned technical problems, this utility model provides a dual-camera doorbell structure with dual sensors.
[0006] This utility model provides a dual-sensor doorbell structure, which includes: a front shell, on which, from top to bottom, are arranged a main camera hole, a button hole, a sensor mounting position, and a secondary camera hole; a main camera board, on which a main camera is mounted, protruding from the main camera hole; a secondary camera board, connected to the bottom of the main camera board, on which a secondary camera is mounted, protruding from the secondary camera hole; dual PIR sensors, on which dual PIR sensors are mounted, and covered by Fresnel lenses, which are connected to the front shell; a main board, which is connected to the main camera board, the secondary camera board, and the dual PIR sensors; and a rear shell, which is fastened to the front shell.
[0007] The dual-sensor doorbell structure provided by this utility model may also have the following features: two mounting positions are obliquely arranged on the sensor mounting position, and the two PIR sensors are respectively mounted on the two mounting positions, with the angle between the two PIR sensors being 100°±5°.
[0008] The dual-sensor doorbell structure provided by this utility model may also have the following features: the mounting position is a cavity structure, the front end of the cavity structure is a cavity, and the PIR sensor is installed in the cavity.
[0009] The dual-sensor doorbell structure provided by this utility model may also have the following feature: a connecting plate is installed on the back side of the PIR sensor, which passes through the cavity and is connected to the back of the cavity structure.
[0010] The dual-sensor doorbell structure provided by this utility model may also have the following feature: a protruding fastener is provided on the back of the cavity structure, which engages with the edge of the connecting plate.
[0011] The dual-sensor doorbell structure provided by this utility model may also have the following feature: the small board is connected to the main board via FPC or FFC.
[0012] The dual-sensor doorbell structure provided by this utility model may also have the following feature: the minimum focal distance between the dual PIR sensors and the Fresnel lens is 9mm.
[0013] The dual-sensor doorbell structure provided by this utility model may also have the following feature: the Fresnel lens is connected to the front shell through adhesive backing and hot-melt column connection.
[0014] The dual-sensor doorbell structure provided by this utility model may also have the following features: an antenna area is provided on the top of the front shell, and the distance between the Fresnel lens and the antenna area is greater than 100mm.
[0015] The beneficial effects of this utility model are as follows:
[0016] The dual-sensor doorbell structure of this invention includes a front shell, a main camera board, a secondary camera board, dual PIR sensors, a main board, and a rear shell. The front shell has a main camera hole, a secondary camera hole, a sensor mounting position, and a button hole. The main camera board and the secondary camera board are respectively equipped with a main camera and a secondary camera, which are exposed through the holes in the front shell. The dual PIR sensors are mounted in the sensor mounting positions, and a Fresnel lens covers the outer side of the dual PIR sensors, which is connected to the front shell. The main board connects to the main camera board, the secondary camera board, and the dual PIR sensors, and finally, the rear shell is fastened to the front shell. Based on this dual-sensor doorbell structure, the dual sensors enable triggering at a large angle while also accommodating triggering at the furthest radial distance.
[0017] In addition, the sensor mounting position is set at an angle with two mounting positions, and the dual PIR sensors are installed in these two positions respectively. The angle between the two PIR sensors after installation is 100°±5°. Using this tilt angle and the two PIR sensors, the doorbell can be triggered at an angle of 180° to the left and right, achieving triggering without blind spots in front of the entrance door, and solving the problem of not being able to catch people or their faces when they are facing in the opposite direction.
[0018] Furthermore, the mounting position is a cavity structure with a hollow front end. The PIR sensor is housed within this cavity, and a connecting plate is mounted on the back side of the PIR sensor. This connecting plate, which senses the cavity, is connected to the back of the cavity structure. This cavity structure provides independent spaces between the connecting plate, the Fresnel lens covering the sensor, and the front housing, preventing heat from entering and damaging the sensor.
[0019] In addition, the back of the cavity structure is provided with a protruding buckle, which engages with the edge of the connecting plate to achieve precise positioning of the connecting plate. The snap-fit connection method reduces the need for screw fixing, thereby simplifying the mold of the front shell and reducing the manufacturing cost of screws.
[0020] In addition, the minimum focal distance between the dual PIR sensor and the Fresnel lens is 9mm. This distance setting allows the sensor to achieve a large-angle triggering of 180° while also taking into account the maximum radial triggering distance.
[0021] Furthermore, the Fresnel lens is connected to the front housing via adhesive backing and a heat-fused anchor. This dual-protection connection method ensures that the Fresnel lens is securely fixed to the front housing, guaranteeing long-term use for the user. Moreover, even if the adhesive backing fails, the heat-fused anchor connection still ensures that the Fresnel lens will not float, avoiding the risk of lens performance degradation.
[0022] Furthermore, an antenna area is located on the top of the front cover, and the distance between the Fresnel lens and the antenna area is greater than 100mm. This distance setting can effectively avoid interference and radiation from the antenna to the sensor. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the dual-sensor doorbell structure in this embodiment;
[0024] Figure 2 This is a regional distribution map of the dual-sensor doorbell structure in this embodiment;
[0025] Figure 3 This is a schematic diagram of the front of the mounting position of the dual PIR sensor in this embodiment;
[0026] Figure 4 This is a schematic diagram of the structure on the back of the mounting position of the dual PIR sensor in this embodiment;
[0027] Figure 5 This is a cross-sectional view of the back of the mounting position of the dual PIR sensor in this embodiment. Detailed Implementation
[0028] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0029] The dual-sensor doorbell structure in this embodiment is suitable for doorbell structures with dual cameras. By setting two PIR sensors, the trigger angle of the doorbell is increased, achieving a large-angle trigger of 180°.
[0030] like Figures 1-5 As shown, the dual-sensor doorbell structure includes a front shell 10, a main board 20, a main camera board 30, a secondary camera board 40, dual PIR sensors 50, and a rear shell 60.
[0031] The front cover 10 has, from top to bottom, a main camera hole, a button hole, a sensor mounting position, and a secondary camera hole.
[0032] The motherboard 20 is located inside the front cover 10, and a button 21 is provided at a corresponding position on it. The button 21 protrudes from the button hole on the front cover 10.
[0033] Both the main camera board 30 and the secondary camera board 40 are mounted on the internal mounting bracket 70 and connected to the motherboard 20.
[0034] The main camera board 30 is located at the top of the mounting bracket 70, and the main camera 31 is mounted on it. The main camera 31 passes through the motherboard 20 and protrudes from the main camera hole on the front cover 10, with a main lens silicone ring 32 filling the space between it and the main camera hole. In addition, a main photosensitive light guide post 33 and a main indicator light guide post 34 are also provided on the side of the main camera 31.
[0035] A secondary camera plate 40 is located at the bottom of the mounting bracket 70, and a secondary camera 41 is mounted on it. The secondary camera 41 protrudes from the secondary camera hole on the front cover 10, and a secondary lens silicone ring 42 is filled between it and the main camera hole. In addition, a secondary indicator light plate 43 is also provided next to the secondary camera 41.
[0036] In addition, a power board 22 is connected to the main board 20, and a power supply 23 is connected to the power board 22, which supplies power to the doorbell.
[0037] The top of the front shell 10 also features an antenna structure, such as... Figure 2 As shown, from top to bottom of the front cover 10, the areas are as follows: A: Antenna area, B: Motherboard and power board area, C: PIR sensor area, and D: Secondary camera area. The distance between the PIR sensor area and the top antenna area is greater than 100mm, effectively avoiding interference and radiation from the antenna to the sensor.
[0038] like Figures 3-5 As shown, the sensor mounting positions are two inclined mounting positions, which are cavity structures. The front end of this cavity structure facing the front shell 10 is a cavity 11, and a limit hook is provided on the back of the cavity 11.
[0039] The dual PIR sensor 50 includes two PIR sensors, each installed within the cavity 11 of the mounting position. The installation and connection structures of the two PIR sensors are identical; a detailed explanation will be provided using one of the PIR sensors as an example.
[0040] A connecting plate 51 is located at the bottom of the PIR sensor. The PIR sensor is situated within the cavity 11, and the connecting plate 51 passes through the cavity and is secured to a limiting hook on the back of the cavity. Furthermore, a limiting rib is provided on the connecting plate 51 at a position corresponding to the limiting hook. The interaction between the limiting rib and the limiting hook ensures precise positioning of the connecting plate 51 relative to its mounting position. The connecting plate 51 is connected to the main board 20 via an FPC or FFC.
[0041] The mounting position is covered on the outside. This Fresnel lens covers the entire mounting position and the outside of the dual PIR sensor 50. The Fresnel lens 12 is made of HDPE material, which is relatively soft, with a lens wall thickness of only 0.7mm. It is connected to the front shell 10 through a combination of adhesive backing, hooks, and hot-melt posts. First, the back of the Fresnel lens 12 is connected to the edge of the adhesive backing 10; then, several inwardly snapping lens hooks 13 are provided at the edge of the Fresnel lens 12, which hook onto the inside of the front shell 10; finally, several hot-melt posts 14 are provided inside the front shell 10, which further ensure the connection between the Fresnel lens 12 and the front shell 10 through their heat-melting properties.
[0042] like Figure 5 As shown, after covering the Fresnel lens 12, the angle between the two tilted PIR sensors is 100°±5°, and the minimum focal distance between the PIR sensor and the Fresnel lens 12 is 9mm.
[0043] Finally, the rear shell 60 and the front shell 10 are fastened together, enclosing the aforementioned internal structure.
[0044] The dual-sensor doorbell structure according to the above embodiment includes a front shell, a main camera board, a secondary camera board, dual PIR sensors, a main board, and a rear shell. The front shell has a main camera hole, a secondary camera hole, a sensor mounting position, and a button hole. The main camera board and the secondary camera board are respectively equipped with a main camera and a secondary camera, which are exposed through the holes in the front shell. The dual PIR sensors are mounted in the sensor mounting positions, and a Fresnel lens covers the outer side of the dual PIR sensors, which is connected to the front shell. The main board connects to the main camera board, the secondary camera board, and the dual PIR sensors, and finally, the rear shell is fastened to the front shell. Based on this dual-sensor doorbell structure, the dual sensors enable triggering at a large angle while also accommodating triggering at the furthest radial distance.
[0045] In addition, the sensor mounting position is set at an angle with two mounting positions, and the dual PIR sensors are installed in these two positions respectively. The angle between the two PIR sensors after installation is 100°±5°. Using this tilt angle and the two PIR sensors, the doorbell can be triggered at an angle of 180° to the left and right, achieving triggering without blind spots in front of the entrance door, and solving the problem of not being able to catch people or their faces when they are facing in the opposite direction.
[0046] Furthermore, the mounting position is a cavity structure with a hollow front end. The PIR sensor is housed within this cavity, and a connecting plate is mounted on the back side of the PIR sensor. This connecting plate, which senses the cavity, is connected to the back of the cavity structure. This cavity structure provides independent spaces between the connecting plate, the Fresnel lens covering the sensor, and the front housing, preventing heat from entering and damaging the sensor.
[0047] In addition, the back of the cavity structure is provided with a protruding buckle, which engages with the edge of the connecting plate to achieve precise positioning of the connecting plate. The snap-fit connection method reduces the need for screw fixing, thereby simplifying the mold of the front shell and reducing the manufacturing cost of screws.
[0048] In addition, the minimum focal distance between the dual PIR sensor and the Fresnel lens is 9mm. This distance setting allows the sensor to achieve a large-angle triggering of 180° while also taking into account the maximum radial triggering distance.
[0049] Furthermore, the Fresnel lens is connected to the front housing via adhesive backing and a heat-fused anchor. This dual-protection connection method ensures that the Fresnel lens is securely fixed to the front housing, guaranteeing long-term use for the user. Moreover, even if the adhesive backing fails, the heat-fused anchor connection still ensures that the Fresnel lens will not float, avoiding the risk of lens performance degradation.
[0050] Furthermore, an antenna area is located on the top of the front cover, and the distance between the Fresnel lens and the antenna area is greater than 100mm. This distance setting can effectively avoid interference and radiation from the antenna to the sensor.
[0051] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A dual-sensor doorbell structure, characterized in that, include: The front cover has, from top to bottom, a main camera hole, a button hole, a sensor mounting position, and a secondary camera hole; A main camera board, wherein a main camera is mounted on the main camera board and the main camera protrudes from the main camera hole; A secondary camera panel is connected to the bottom of the main camera panel, and a secondary camera is mounted on it, protruding from the main camera panel. A dual PIR sensor is disposed at the sensor mounting position, and the outer side of the dual PIR sensor is covered with a Fresnel lens, which is connected to the front housing. The motherboard is connected to the main camera board, the secondary camera board, and the dual PIR sensors. The rear shell is fastened to the front shell.
2. The dual-sensor doorbell structure according to claim 1, characterized in that: The sensor mounting position has two mounting positions arranged at an angle. The two PIR sensors are respectively installed in the two mounting positions, and the angle between the two PIR sensors is 100°±5°.
3. The dual-sensor doorbell structure according to claim 2, characterized in that: The mounting position is a cavity structure, and the front end of the cavity structure is a cavity, in which the PIR sensor is installed.
4. The dual-sensor doorbell structure according to claim 3, characterized in that: A connecting plate is mounted on the back side of the PIR sensor, which passes through the cavity and connects to the back of the cavity structure.
5. The dual-sensor doorbell structure according to claim 4, characterized in that: The back of the cavity structure is provided with a protruding fastener, which engages with the edge of the connecting plate.
6. The dual-sensor doorbell structure according to claim 5, characterized in that: The small board is connected to the main board via an FPC or an FFC.
7. The dual-sensor doorbell structure according to claim 1, characterized in that: The minimum focal distance between the dual PIR sensor and the Fresnel lens is 9mm.
8. The dual-sensor doorbell structure according to claim 1, characterized in that: The Fresnel lens is connected to the front shell via adhesive backing and a hot-melt post connection.
9. The dual-sensor doorbell structure according to claim 1, characterized in that: An antenna area is provided on the top of the front shell, and the distance between the Fresnel lens and the antenna area is greater than 100mm.