Detection component and doorbell

Abstract

The application relates to the technical field of optical lens modules, in particular to a detection component and a doorbell. The detection component comprises a PIR module, a lens module and a doorbell. The PIR module comprises a first PIR sensor, a second PIR sensor and a third PIR sensor arranged in sequence along a first direction. The normal of the first PIR sensor is arranged at an angle with the normal of the second PIR sensor, and the normal of the second PIR sensor is arranged at an angle with the normal of the third PIR sensor. The lens module comprises a mirror body, and the mirror body comprises a first view area, a second view area and a third view area arranged in sequence along the first direction. The first view area is focused on the sensing position of the first PIR sensor, the second view area is focused on the sensing position of the second PIR sensor, and the third view area is focused on the sensing position of the third PIR sensor. The detection component and the doorbell provided by the application can improve the problem that the horizontal detection angle range and the radial motion detection distance of the existing doorbell are both small.

Description

Technical Field

[0001] This application relates to the field of optical lens module technology, and in particular to a detection component and a doorbell. Background Technology

[0002] To trigger the doorbell's recording function, a detection component is typically installed on the doorbell. This component includes a PIR (Pyroelectric Infrared Sensor) module and a lens module. When a person approaches the doorbell, the lens module's focus on the radiated energy shifts on the PIR module, thus triggering the doorbell to record.

[0003] Currently, doorbell products mainly suffer from the following problems:

[0004] First, the horizontal detection range of the detection component does not match the camera's field of view. The field of view of a doorbell wide-angle lens can usually reach more than 140°, while the lens module corresponding to a common PIR module usually has a horizontal detection angle of less than 120°. This will cause the detection range of the detection component to be mismatched with the camera's field of view, meaning that recording will only be triggered after a certain period of time after a person enters the camera's monitoring range.

[0005] Secondly, the radial motion detection distance is too short. Theoretically, when a person walks radially toward the doorbell, the radiation energy generated by the human body produces the same energy at the positive and negative poles of the PIR module (due to symmetry), resulting in no energy difference between the positive and negative poles, which would prevent the doorbell from being triggered and thus prevent the monitoring from recording video. In reality, the displacement change of the radiation point converging on the PIR module is small, so the generated electrical signal is very weak. This leads to a short radial motion detection distance, and the doorbell will only be triggered to record video when the person moves radially very close to the doorbell. Utility Model Content

[0006] This application provides a detection component and a doorbell to improve the problem that existing doorbells have a small horizontal detection angle range and a small radial movement detection distance.

[0007] In a first aspect, embodiments of this application provide a detection component, the detection component comprising:

[0008] A PIR module includes a first PIR sensor, a second PIR sensor, and a third PIR sensor arranged sequentially along a first direction. The normal of the first PIR sensor is set at an angle to the normal of the second PIR sensor, and the normal of the second PIR sensor is set at an angle to the normal of the third PIR sensor.

[0009] The lens module includes a lens body, which includes a first viewing area, a second viewing area, and a third viewing area arranged sequentially along the first direction. The first viewing area is focused on the sensing position of the first PIR sensor, the second viewing area is focused on the sensing position of the second PIR sensor, and the third viewing area is focused on the sensing position of the third PIR sensor.

[0010] In some embodiments, the lens body is arc-shaped. The first viewing area includes a first zone, a second zone, and a third zone arranged sequentially along the first direction. The second viewing area includes a fourth zone, a fifth zone, and a sixth zone arranged sequentially along the second direction, which is perpendicular to the first direction. The third viewing area includes a seventh zone, an eighth zone, and a ninth zone arranged sequentially along the first direction. The first, second, third, fourth, fifth, sixth, seventh, eighth, and ninth zones are all lenses with Fresnel patterns. The first, second, and third zones are all focused on the sensing position of the first PIR sensor. The fourth, fifth, and sixth zones are all focused on the sensing position of the second PIR sensor. The seventh, eighth, and ninth zones are all focused on the sensing position of the third PIR sensor.

[0011] In some embodiments, the centers of the concentric circles of the Fresnel patterns in the first region, the second region, the third region, the seventh region, the eighth region, and the ninth region are located at the same position in the second direction; the center of the concentric circles of the Fresnel patterns in the first region is located on the horizontal center line of the Fresnel pattern area in the first region, and the center of the concentric circles of the Fresnel patterns in the second region are located on the horizontal center line of the Fresnel pattern area in the second region. The centers of the concentric circles of the Fresnel patterns are located on the horizontal center line of the second Fresnel pattern region, the centers of the concentric circles of the third Fresnel pattern region are located on the horizontal center line of the third Fresnel pattern region, the centers of the concentric circles of the seventh Fresnel pattern region are located on the horizontal center line of the seventh Fresnel pattern region, the centers of the concentric circles of the eighth Fresnel pattern region are located on the horizontal center line of the eighth Fresnel pattern region, and the centers of the concentric circles of the ninth Fresnel pattern region are located on the horizontal center line of the ninth Fresnel pattern region.

[0012] In some embodiments, the centers of the concentric circles of the Fresnel patterns in the first region are located on the side of the vertical center line of the Fresnel pattern region in the first region facing away from the second viewing region; the centers of the concentric circles of the Fresnel patterns in the second region are located on the side of the vertical center line of the Fresnel pattern region in the second region facing away from the second viewing region; the centers of the concentric circles of the Fresnel patterns in the third region are located on the side of the vertical center line of the Fresnel pattern region in the third region facing away from the second viewing region; the centers of the concentric circles of the Fresnel patterns in the seventh region are located on the side of the vertical center line of the Fresnel pattern region in the seventh region facing away from the second viewing region; the centers of the concentric circles of the Fresnel patterns in the eighth region are located on the side of the vertical center line of the Fresnel pattern region in the eighth region facing away from the second viewing region; and the centers of the concentric circles of the Fresnel patterns in the ninth region are located on the side of the vertical center line of the Fresnel pattern region in the ninth region facing away from the second viewing region.

[0013] In some embodiments, the first region and the second region have an optical angle of 25° in the horizontal direction, and the second region and the third region have an optical angle of 25° in the horizontal direction.

[0014] In some embodiments, the center of the concentric circles of the Fresnel pattern in the fourth region is located on the vertical center line of the Fresnel pattern area in the fourth region, the center of the concentric circles of the Fresnel pattern in the fifth region is located on the vertical center line of the Fresnel pattern area in the fifth region, and the center of the concentric circles of the Fresnel pattern in the sixth region is located on the vertical center line of the Fresnel pattern area in the sixth region.

[0015] In some embodiments, the center of the concentric circles of the Fresnel pattern in the fourth region is located on the side of the horizontal center line of the Fresnel pattern area in the fourth region toward the fifth region, the center of the concentric circles of the Fresnel pattern in the fifth region is located on the side of the horizontal center line of the Fresnel pattern area in the fifth region toward the sixth region, and the center of the concentric circles of the Fresnel pattern in the sixth region is located on the side of the horizontal center line of the Fresnel pattern area in the sixth region toward the fifth region.

[0016] In some embodiments, the fourth and fifth regions have an optical angle of 6° in the vertical direction, and the fifth and sixth regions have an optical angle of 6° in the vertical direction.

[0017] In some embodiments, the lens body has a vertical central axis, and the first and third viewing areas are symmetrical about the vertical central axis.

[0018] In some embodiments, the focal length of the second view region is greater than 20mm, and the focal lengths of the first view region and the third view region are both less than 15mm.

[0019] In some embodiments, the first PIR sensor and the third PIR sensor are both placed horizontally, while the second PIR sensor is placed vertically.

[0020] In some embodiments, the normal of the first PIR sensor is set at a 35° angle to the normal of the second PIR sensor, the normal of the second PIR sensor is set at a 35° angle to the normal of the third PIR sensor, and the normal of the first PIR sensor is set at a 70° angle to the normal of the third PIR sensor.

[0021] In some embodiments, the lens body has a dimension of 28 mm along the first direction and a dimension of 20 mm perpendicular to the first direction.

[0022] Secondly, embodiments of this application provide a doorbell that includes the detection component described in the first aspect.

[0023] The detection component provided in this application has the following advantages: Since the PIR module includes a first PIR sensor, a second PIR sensor, and a third PIR sensor arranged sequentially along a first direction, with the normal of the first PIR sensor and the normal of the second PIR sensor forming an angle, and the normal of the second PIR sensor and the normal of the third PIR sensor also forming an angle, and the lens module includes a lens body, which includes a first viewing area, a second viewing area, and a third viewing area arranged sequentially along the first direction, with the first viewing area focused on the sensing position of the first PIR sensor, the second viewing area focused on the sensing position of the second PIR sensor, and the third viewing area focused on the sensing position of the third PIR sensor, the horizontal detection angle range of the detection component can be increased by the cooperation of the first PIR sensor with the first viewing area and the cooperation of the third PIR sensor with the third viewing area, and the radial movement detection distance of the detection component can be increased by the cooperation of the second PIR sensor with the second viewing area, thereby improving the problem that the detection angle range and radial movement detection distance of the existing detection components are both small.

[0024] The advantages of the doorbell provided in this application compared to the prior art can be seen in the description of the advantages of the detection component provided in this application compared to the prior art, which will not be repeated here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the detection component in one embodiment of this application;

[0027] Figure 2 yes Figure 1 A schematic diagram of the lens module of the detection component shown;

[0028] Figure 3 yes Figure 2 The front view of the lens module shown.

[0029] The markings in the diagram mean:

[0030] 10. First PIR sensor; 20. Second PIR sensor; 30. Third PIR sensor; 40. First viewing area; 41. First zone; 42. Second zone; 43. Third zone; 50. Second viewing area; 51. Fourth zone; 52. Fifth zone; 53. Sixth zone; 60. Third viewing area; 61. Seventh zone; 62. Eighth zone; 63. Ninth zone. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0032] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] In this specification, references to "one embodiment," "some embodiments," or simply "embodiment" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. Furthermore, in one or more embodiments, specific features, structures, or characteristics may be combined in any suitable manner.

[0035] To illustrate the technical solution of this application, the following description is provided in conjunction with specific accompanying drawings and embodiments.

[0036] To trigger the doorbell's recording function, a detection component is typically installed on the doorbell. This component includes a PIR (Pyroelectric Infrared Sensor) module and a lens module. When a person approaches the doorbell, the lens module's focus on the radiated energy shifts on the PIR module, thus triggering the doorbell to record.

[0037] Currently, doorbell products mainly suffer from the following problems:

[0038] First, the horizontal detection range of the detection component does not match the camera's field of view. The field of view of a doorbell wide-angle lens can usually reach more than 140°, while the lens module corresponding to a common PIR module usually has a horizontal detection angle of less than 120°. This will cause the detection range of the detection component to be mismatched with the camera's field of view, meaning that recording will only be triggered after a certain period of time after a person enters the camera's monitoring range.

[0039] Secondly, the radial motion detection distance is too short. Theoretically, when a person walks radially toward the doorbell, the radiation energy generated by the human body produces the same energy at the positive and negative poles of the PIR module (due to symmetry), resulting in no energy difference between the positive and negative poles, which would prevent the doorbell from being triggered and thus prevent the monitoring from recording video. In reality, the displacement change of the radiation point converging on the PIR module is small, so the generated electrical signal is very weak. This leads to a short radial motion detection distance, and the doorbell will only be triggered to record video when the person moves radially very close to the doorbell.

[0040] In view of this, this application provides a detection component and a doorbell. Since the PIR module includes a first PIR sensor, a second PIR sensor, and a third PIR sensor arranged sequentially along a first direction, with the normal of the first PIR sensor forming an angle with the normal of the second PIR sensor, and the normal of the second PIR sensor forming an angle with the normal of the third PIR sensor, and the lens module includes a lens body, the lens body including a first viewing area, a second viewing area, and a third viewing area arranged sequentially along the first direction, the first viewing area focusing on the sensing position of the first PIR sensor, the second viewing area focusing on the sensing position of the second PIR sensor, and the third viewing area focusing on the sensing position of the third PIR sensor, the horizontal detection angle range of the detection component can be increased by the cooperation of the first PIR sensor with the first viewing area and the cooperation of the third PIR sensor with the third viewing area, and the radial movement detection distance of the detection component can be increased by the cooperation of the second PIR sensor with the second viewing area, thereby improving the problem that the detection angle range and radial movement detection distance of the existing detection components are both small.

[0041] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the detection component in one embodiment of this application. Figure 2 yes Figure 1 The diagram shows the structure of the lens module of the detection component. Figure 3 yes Figure 2 The front view of the lens module shown.

[0042] In a first aspect, embodiments of this application provide a detection component, including a detection component PIR module and a lens module.

[0043] The PIR module includes a first PIR sensor 10, a second PIR sensor 20, and a third PIR sensor 30 arranged sequentially along a first direction. The normal of the first PIR sensor 10 is set at an angle α1 with the normal of the second PIR sensor 20, and the normal of the second PIR sensor 20 is set at an angle α2 with the normal of the third PIR sensor 30. The first direction can be the direction indicated by arrow J in the figure.

[0044] The lens module includes a lens body, which includes a first viewing area 40, a second viewing area 50, and a third viewing area 60 arranged sequentially along a first direction. The first viewing area 40 is focused on the sensing position of the first PIR sensor 10, the second viewing area 50 is focused on the sensing position of the second PIR sensor 20, and the third viewing area 60 is focused on the sensing position of the third PIR sensor 30.

[0045] The first viewing zone 40, the second viewing zone 50, and the third viewing zone 60 may each include a lens with Fresnel patterns.

[0046] As can be seen from the above, the detection component provided in this application embodiment includes a PIR module comprising a first PIR sensor 10, a second PIR sensor 20, and a third PIR sensor 30 arranged sequentially along a first direction. The normal of the first PIR sensor 10 is set at an angle to the normal of the second PIR sensor 20, and the normal of the second PIR sensor 20 is set at an angle to the normal of the third PIR sensor 30. The lens module includes a lens body comprising a first viewing area 40, a second viewing area 50, and a third viewing area 60 arranged sequentially along the first direction. The first viewing area 40 is focused on the first PIR sensor. The sensing position of the first PIR sensor 10 is such that the second viewing area 50 is focused on the sensing position of the second PIR sensor 20, and the third viewing area 60 is focused on the sensing position of the third PIR sensor 30. Therefore, the horizontal detection angle range of the detection component can be increased by cooperating the first PIR sensor 10 with the first viewing area 40 and the third PIR sensor 30 with the third viewing area 60. Furthermore, the radial movement detection distance of the detection component can be increased by cooperating the second PIR sensor 20 with the second viewing area 50. This can improve the problem that the existing detection component has a small detection angle range and a small radial movement detection distance.

[0047] In this embodiment, the lens body is arc-shaped. The first viewing area 40 includes a first region 41, a second region 42, and a third region 43 arranged sequentially along a first direction. The second viewing area 50 includes a fourth region 51, a fifth region 52, and a sixth region 53 arranged sequentially along a second direction, which is perpendicular to the first direction. The third viewing area 60 includes a seventh region 61, an eighth region 62, and a ninth region 63 arranged sequentially along the first direction. The first region 41, the second region 42, the third region 43, the fourth region 51, the fifth region 52, the sixth region 53, the seventh region 61, the eighth region 62, and the ninth region 63 are all lenses with Fresnel patterns. The first region 41, the second region 42, and the third region 43 are all focused on the sensing position of the first PIR sensor 10. The fourth region 51, the fifth region 52, and the sixth region 53 are all focused on the sensing position of the second PIR sensor 20. The seventh region 61, the eighth region 62, and the ninth region 63 are all focused on the sensing position of the third PIR sensor 30. The second direction can be the direction indicated by arrow K in the figure.

[0048] By adopting the above scheme, the horizontal detection angle range of the detection component can be increased by cooperating with the first PIR sensor 10 through the first zone 41, the second zone 42 and the third zone 43, and with the third PIR sensor 30 through the seventh zone 61, the eighth zone 62 and the ninth zone 63. Furthermore, the detection distance of the radial movement of the detection component can be increased by cooperating with the second PIR sensor 20 through the fourth zone 51, the fifth zone 52 and the sixth zone 53.

[0049] Among them, the centers of the concentric circles of the Fresnel patterns in Zone 1 (41), Zone 2 (42), Zone 3 (43), Zone 7 (61), Zone 8 (62), and Zone 9 (63) are all located at the same position in the second direction; the center of the concentric circle of the Fresnel pattern in Zone 1 (41) is located on the horizontal center line K2 of the Fresnel pattern area in Zone 1 (41), and the center of the concentric circle of the Fresnel pattern in Zone 2 (42) is located at the same position in the second direction; the center of the concentric circle of the Fresnel pattern in Zone 1 (41) is located on the horizontal center line K2 of the Fresnel pattern area in Zone 1 (41), and the center of the concentric circle of the Fresnel pattern in Zone 2 (42) is located at the same position in the second direction. The center of the concentric circle of the Fresnel pattern in zone 42 of the second region is located on the horizontal center line K2 of the Fresnel pattern in zone 43 of the third region. The center of the concentric circle of the Fresnel pattern in zone 61 of the seventh region is located on the horizontal center line K2 of the Fresnel pattern in zone 61 of the seventh region. The center of the concentric circle of the Fresnel pattern in zone 62 of the eighth region is located on the horizontal center line K2 of the Fresnel pattern in zone 62 of the eighth region. The center of the concentric circle of the Fresnel pattern in zone 63 of the ninth region is located on the horizontal center line K2 of the Fresnel pattern in zone 63 of the ninth region.

[0050] With this configuration, the horizontal detection angle range of the detection component can be increased by cooperating the first zone 41, the second zone 42 and the third zone 43 with the first PIR sensor 10, and by cooperating the seventh zone 61, the eighth zone 62 and the ninth zone 63 with the third PIR sensor 30.

[0051] Optionally, the center of the concentric circles of the Fresnel patterns in the first region 41 is located on the side opposite to the second viewing region 50, along the vertical center line L1 of the Fresnel pattern area in the first region 41; the center of the concentric circles of the Fresnel patterns in the second region 42 is located on the side opposite to the second viewing region 50, along the vertical center line L2 of the Fresnel pattern area in the second region 42; and the center of the concentric circles of the Fresnel patterns in the third region 43 is located on the side opposite to the second viewing region 50, along the vertical center line L3 of the Fresnel pattern area in the third region 43. On the side, the center of the concentric circles of the Fresnel pattern in zone 7, area 61, is located on the side opposite to the second viewing area, on the vertical center line L4 of the Fresnel pattern area in zone 7, area 61. The center of the concentric circles of the Fresnel pattern in zone 8, area 62, is located on the side opposite to the second viewing area, on the vertical center line L5 of the Fresnel pattern area in zone 8, area 62. The center of the concentric circles of the Fresnel pattern in zone 9, area 63, is located on the side opposite to the second viewing area, on the vertical center line L6 of the Fresnel pattern area in zone 9, area 63.

[0052] With this configuration, the horizontal detection angle range of the detection component can be increased by cooperating the first zone 41, the second zone 42 and the third zone 43 with the first PIR sensor 10, and by cooperating the seventh zone 61, the eighth zone 62 and the ninth zone 63 with the third PIR sensor 30.

[0053] Optionally, the first region 41 and the second region 42 have an optical angle of 25° in the horizontal direction, and the second region 42 and the third region 43 have an optical angle of 25° in the horizontal direction.

[0054] With this configuration, the horizontal detection angle range of the detection component can be increased by cooperating with the first PIR sensor 10 through the first zone 41, the second zone 42 and the third zone 43.

[0055] Optionally, the lens body has a vertical central axis L, and the first viewing area 40 and the third viewing area 60 are symmetrical about the vertical central axis.

[0056] With this configuration, the horizontal detection angle range of the detection component can be increased by cooperating the first zone 41, the second zone 42 and the third zone 43 with the first PIR sensor 10, and by cooperating the seventh zone 61, the eighth zone 62 and the ninth zone 63 with the third PIR sensor 30.

[0057] It is understandable that the seventh zone 61 and the eighth zone 62 have an optical angle of 25° in the horizontal direction, and the eighth zone 62 and the ninth zone 63 have an optical angle of 25° in the horizontal direction.

[0058] Please refer to Figure 1 , Figure 2 and Figure 3 In this embodiment, the center of the concentric circles of the Fresnel pattern in the fourth region 51 is located on the vertical center line L of the Fresnel pattern area in the fourth region 51, the center of the concentric circles of the Fresnel pattern in the fifth region 52 is located on the vertical center line L of the Fresnel pattern area in the fifth region 52, and the center of the concentric circles of the Fresnel pattern in the sixth region 53 is located on the vertical center line L of the Fresnel pattern area in the sixth region 53.

[0059] By adopting the above scheme, the fourth zone 51, the fifth zone 52 and the sixth zone 53 can cooperate with the second PIR sensor 20 so that when a person moves radially, the fourth zone 51, the fifth zone 52 and the sixth zone 53 at different positions will converge at different positions on the second PIR sensor 20, thereby improving the detection distance of radial movement.

[0060] It should be noted that since the human head is not covered by clothing, the main source of radiated energy in the human body is the head. The vertical center line L of the Fresnel pattern area 51 in zone 4, the vertical center line L of the Fresnel pattern area 52 in zone 5, and the vertical center line L of the Fresnel pattern area 53 in zone 6 are all collinear with the vertical central axis L.

[0061] Optionally, the center of the concentric circles of the Fresnel pattern in zone 51 is located on the side of the horizontal center line K1 of the Fresnel pattern area in zone 51 facing zone 52, the center of the concentric circles of the Fresnel pattern in zone 52 is located on the side of the horizontal center line K2 of the Fresnel pattern area in zone 52 facing zone 6, and the center of the concentric circles of the Fresnel pattern in zone 63 is located on the side of the horizontal center line K3 of the Fresnel pattern area in zone 6 facing zone 52.

[0062] With this configuration, the fourth zone 51, the fifth zone 52, and the sixth zone 53 can work in conjunction with the second PIR sensor 20, so that when a person moves radially, the fourth zone 51, the fifth zone 52, and the sixth zone 53 at different positions will converge at different positions on the second PIR sensor 20, thereby increasing the detection distance of radial movement.

[0063] It should be noted that the horizontal center line K2 of the fifth zone 52 Fresnel pattern area is set collinearly with the horizontal center line K2 of the first zone 41 Fresnel pattern area.

[0064] Among them, the fourth zone 51 and the fifth zone 52 have an optical angle of 6° in the vertical direction, and the fifth zone 52 and the sixth zone 53 have an optical angle of 6° in the vertical direction.

[0065] This configuration can increase the detection distance of the radial movement of the detection component.

[0066] For example, the fields of view of the fourth zone 51, the fifth zone 52, and the sixth zone 53 along the second direction are -8.5° to -1.5°, -2.5° to 4.5°, and 3.5° to 10.5°, respectively, and their fields of view partially overlap.

[0067] Optionally, the focal length of the second field of view 50 is greater than 20mm, and the focal lengths of the first field of view 40 and the third field of view 60 are both less than 15mm.

[0068] This configuration increases the horizontal detection angle range and radial movement detection distance of the detection component.

[0069] In this embodiment, the first PIR sensor 10 and the third PIR sensor 30 are both placed horizontally, while the second PIR sensor 20 is placed vertically.

[0070] By adopting the above scheme, the horizontal detection angle range and radial movement detection distance of the detection component can be increased.

[0071] It should be noted that PIR sensors are generally used to detect lateral movement, while placing the second PIR sensor 20 vertically allows for the detection of vertical movement. When a person moves radially towards the doorbell, for example, from 6 meters to 1 meter away, the person's angle of depression relative to the doorbell changes, indicating vertical movement relative to themselves. This radial movement is detected through the second viewing area 50. Furthermore, the vertical field of view of the second area 42 overlaps. When a person enters a certain area, the energy received in that area increases; when leaving a certain area, the energy received decreases. Utilizing this characteristic, the areas with increased and decreased energy are overlapped to enhance the rate of change in received energy. The output value of the second PIR sensor 20 is proportional to the rate of energy change, thus increasing and enhancing the signal output. Simultaneously, the first viewing area 40 and the third viewing area 60 overlap in their central portions, increasing the detection capability for weak signals and amplifying the lateral swaying amplitude of the human body during movement, further enhancing the signal output.

[0072] For example, the sensor pixel size of the second PIR sensor 20 can be 1mm*2mm, and the spacing between adjacent sensor pixels is 1mm.

[0073] Optionally, the normal of the first PIR sensor 10 is set at a 35° angle to the normal of the second PIR sensor 20, the normal of the second PIR sensor 20 is set at a 35° angle to the normal of the third PIR sensor 30, and the normal of the first PIR sensor 10 is set at a 70° angle to the normal of the third PIR sensor 30.

[0074] By adopting the above scheme, the first zone 41, the second zone 42 and the third zone 43 can cooperate with the first PIR sensor 10 to be responsible for the detection of -70° to 5° in the horizontal detection direction, and the fourth zone 51, the fifth zone 52 and the sixth zone 53 can cooperate with the third PIR sensor 30 to be responsible for the detection of -5° to 70° in the horizontal detection direction, so that the overall horizontal detection angle of the detection component can reach 140°.

[0075] For example, the placement direction of the first PIR sensor 10 and the placement direction of the third PIR sensor 30 are both perpendicular to the placement direction of the second PIR sensor 20. That is, the long side of the first PIR sensor 10 and the long side of the third PIR sensor 30 are parallel to the horizontal direction of the lens body, and the long side of the second PIR sensor 20 is perpendicular to the horizontal direction of the lens body.

[0076] Optionally, the lens body has a dimension of 28 mm along the first direction and a dimension of 20 mm perpendicular to the first direction.

[0077] This configuration increases the horizontal detection angle range of the detection component and also increases the detection distance of the radial movement of the detection component.

[0078] For example, the dimension of the mirror body along the first direction is the length of the mirror body, and the dimension of the mirror body perpendicular to the first direction is the width of the mirror body.

[0079] The detection component provided in the above embodiments has a large horizontal detection angle range, and the overall horizontal detection angle can reach 140°. It also has a large radial motion detection distance, which can reach 6m.

[0080] Please refer to Figure 1 , Figure 2 and Figure 3 Secondly, embodiments of this application provide a doorbell that includes the detection component as described in the first aspect.

[0081] The doorbell provided in this embodiment includes a PIR module comprising a first PIR sensor 10, a second PIR sensor 20, and a third PIR sensor 30 arranged sequentially along a first direction. The normal of the first PIR sensor 10 forms an angle with the normal of the second PIR sensor 20, and the normal of the second PIR sensor 20 forms an angle with the normal of the third PIR sensor 30. The lens module includes a lens body comprising a first viewing area 40, a second viewing area 50, and a third viewing area 60 arranged sequentially along the first direction. The first viewing area 40 is focused on the first PIR sensor 10. The first PIR sensor 10 is focused on the sensing position of the second PIR sensor 20, and the second viewing area 50 is focused on the sensing position of the third PIR sensor 30. Therefore, the horizontal detection angle range of the doorbell can be increased by cooperating with the first PIR sensor 10 and the first viewing area 40, and the third PIR sensor 30 and the third viewing area 60. Furthermore, the radial movement detection distance of the doorbell can be increased by cooperating with the second PIR sensor 20 and the second viewing area 50. This can improve the problem that the existing doorbell has a small detection angle range and a small radial movement detection distance.

[0082] It is understood that the doorbell provided in the embodiments of this application may also include a housing, a circuit board, and a power supply, etc., which will not be described in detail here.

[0083] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A detection component, characterized in that, The detection component includes: A PIR module includes a first PIR sensor, a second PIR sensor, and a third PIR sensor arranged sequentially along a first direction. The normal of the first PIR sensor is set at an angle to the normal of the second PIR sensor, and the normal of the second PIR sensor is set at an angle to the normal of the third PIR sensor. The lens module includes a lens body, which includes a first viewing area, a second viewing area, and a third viewing area arranged sequentially along the first direction. The first viewing area is focused on the sensing position of the first PIR sensor, the second viewing area is focused on the sensing position of the second PIR sensor, and the third viewing area is focused on the sensing position of the third PIR sensor.

2. The detection component according to claim 1, characterized in that, The lens body is arc-shaped. The first viewing area includes a first zone, a second zone, and a third zone arranged sequentially along the first direction. The second viewing area includes a fourth zone, a fifth zone, and a sixth zone arranged sequentially along the second direction, which is perpendicular to the first direction. The third viewing area includes a seventh zone, an eighth zone, and a ninth zone arranged sequentially along the first direction. The first, second, third, fourth, fifth, sixth, seventh, eighth, and ninth zones are all lenses with Fresnel patterns. The first, second, and third zones are all focused on the sensing position of the first PIR sensor. The fourth, fifth, and sixth zones are all focused on the sensing position of the second PIR sensor. The seventh, eighth, and ninth zones are all focused on the sensing position of the third PIR sensor.

3. The detection component according to claim 2, characterized in that, The centers of the concentric circles of the Fresnel patterns in the first region, the second region, the third region, the seventh region, the eighth region, and the ninth region are all located at the same position in the second direction; the center of the concentric circle of the Fresnel pattern in the first region is located on the horizontal center line of the Fresnel pattern area in the first region, and the center of the concentric circle of the Fresnel pattern in the second region is located on the horizontal center line of the Fresnel pattern area in the second region. The center of the concentric circle is located on the horizontal center line of the Fresnel pattern area in the second region. The center of the concentric circle of the Fresnel pattern in the third region is located on the horizontal center line of the Fresnel pattern area in the third region. The center of the concentric circle of the Fresnel pattern in the seventh region is located on the horizontal center line of the Fresnel pattern area in the seventh region. The center of the concentric circle of the Fresnel pattern in the eighth region is located on the horizontal center line of the Fresnel pattern area in the eighth region. The center of the concentric circle of the Fresnel pattern in the ninth region is located on the horizontal center line of the Fresnel pattern area in the ninth region.

4. The detection component according to claim 3, characterized in that, The centers of the concentric circles of the Fresnel patterns in the first region are located on the side opposite to the second viewing area, along with the vertical center line of the Fresnel pattern area in the second region. Similarly, the centers of the concentric circles of the Fresnel patterns in the third region are located on the side opposite to the second viewing area, along with the vertical center line of the Fresnel pattern area in the seventh region. The centers of the concentric circles of the Fresnel patterns in the eighth region are located on the side opposite to the second viewing area, and the centers of the concentric circles of the Fresnel patterns in the ninth region are located on the side opposite to the second viewing area.

5. The detection component according to claim 3, characterized in that, The first region and the second region have an optical angle of 25° in the horizontal direction, and the second region and the third region have an optical angle of 25° in the horizontal direction.

6. The detection component according to claim 2, characterized in that, The center of the concentric circles of the Fresnel pattern in the fourth region is located on the vertical center line of the Fresnel pattern area in the fourth region; the center of the concentric circles of the Fresnel pattern in the fifth region is located on the vertical center line of the Fresnel pattern area in the fifth region; and the center of the concentric circles of the Fresnel pattern in the sixth region is located on the vertical center line of the Fresnel pattern area in the sixth region.

7. The detection component according to claim 6, characterized in that, The center of the concentric circles of the Fresnel pattern in the fourth region is located on the side of the horizontal center line of the Fresnel pattern area in the fourth region toward the fifth region. The center of the concentric circles of the Fresnel pattern in the fifth region is located on the side of the horizontal center line of the Fresnel pattern area in the fifth region toward the sixth region. The center of the concentric circles of the Fresnel pattern in the sixth region is located on the side of the horizontal center line of the Fresnel pattern area in the sixth region toward the fifth region.

8. The detection component according to claim 6, characterized in that, The fourth and fifth regions have an optical angle of 6° in the vertical direction, and the fifth and sixth regions have an optical angle of 6° in the vertical direction.

9. The detection component according to claim 1, characterized in that, The mirror body has a vertical central axis, and the first viewing area and the third viewing area are symmetrical about the vertical central axis.

10. The detection component according to claim 1, characterized in that, The focal length of the second view is greater than 20mm, while the focal lengths of the first view and the third view are both less than 15mm.

11. The detection component according to claim 1, characterized in that, The first PIR sensor and the third PIR sensor are both placed horizontally, while the second PIR sensor is placed vertically.

12. The detection component according to any one of claims 1 to 11, characterized in that, The normal of the first PIR sensor is set at a 35° angle to the normal of the second PIR sensor, the normal of the second PIR sensor is set at a 35° angle to the normal of the third PIR sensor, and the normal of the first PIR sensor is set at a 70° angle to the normal of the third PIR sensor.

13. The detection component according to any one of claims 1 to 11, characterized in that, The mirror body has a dimension of 28 mm along the first direction and a dimension of 20 mm perpendicular to the first direction.

14. A doorbell, characterized in that, The doorbell includes a detection component as described in any one of claims 1 to 13.

Images