A human sensor and human sensor detection system

Abstract

The application relates to a human body sensor and a human body sensing detection system, the human body sensor comprising a sensing module, a head shell, a main body shell, a main body base, a first driving assembly and a second driving assembly, the sensing module being used for sensing a human body, the main body shell being rotationally arranged on the main body base in an X plane, the head shell being rotationally arranged on the main body shell in a Y plane, the first driving assembly being used for driving the head shell to rotate, the second driving assembly being used for driving the main body shell to rotate, and the first driving assembly and the second driving assembly jointly driving the sensing module to scan and detect a static human body in a certain angle and a certain range. Through the special structural design, the main body shell can rotate in the X plane, the head shell can rotate in the Y plane, and under the joint driving of the first driving assembly and the second driving assembly, the sensing module can scan and detect a static human body in a large angle and a large range, so that effective and stable detection of the static human body is realized.

Description

[0001] This application claims domestic priority for Chinese invention patent application No. 202210018462.0, filed on January 7, 2022, by Guangdong Haobote Technology Co., Ltd. Technical Field

[0002] This application relates to the field of human body sensing device technology, and in particular to a human body sensor and a human body sensing detection system. Background Technology

[0003] Human body detection technology has been applied in fields such as security monitoring and energy-saving control. Currently, the most common human body detection devices are those with built-in pyroelectric infrared sensors. Pyroelectric infrared sensors can receive infrared radiation energy from the environment. Since all objects in nature except for black objects radiate infrared radiation, and the wavelength of infrared radiation obeys Wien's displacement law, the human body itself radiates infrared radiation with a specific wavelength. Therefore, by detecting the infrared radiation of the human body using a pyroelectric infrared sensor, the activity status of the human body can be obtained, thereby sensing and detecting the presence of the human body within a preset range.

[0004] In the field of energy-saving control, human body sensors can be installed in corridors, stairwells, and public hallways, and connected in series with lighting systems. The sensors can monitor activity at night; if a person appears within the detection range, the sensor sends a signal to the lighting system to automatically illuminate within a preset time. Human body sensors can also be installed in public areas such as libraries and study rooms, connected in series with lighting or air conditioning systems. The sensors can detect people within the detection range in real time, and the lighting system automatically adjusts its brightness, or the air conditioning system automatically adjusts its operating mode. In the field of security monitoring, human body sensors can be installed in concealed locations and connected in series with burglar alarms. The sensors detect people within the detection range in real time, and the burglar alarms trigger an alarm based on the sensor's detection results.

[0005] In the aforementioned applications, the detection range and sensitivity of the pyroelectric infrared sensor both affect the performance of the human body sensor. To improve these detection ranges and sensitivity, existing technologies often add a Fresnel lens to the detection end of the pyroelectric infrared sensor. The Fresnel lens can focus the infrared radiation emitted by the human body onto the sensitive element of the pyroelectric infrared sensor, thereby increasing the detection range. Furthermore, the Fresnel lens can periodically block the incident infrared radiation, enabling the pyroelectric infrared sensor to output a relatively stable continuous signal. However, the pyroelectric infrared sensor and the Fresnel lens are fixedly installed (e.g., fixed with bolts). After the human body sensor product leaves the factory, the pyroelectric infrared sensor and the Fresnel lens are normally not separated. This results in a fixed detection range for the pyroelectric infrared sensor, limiting the human body sensor's single detection to this range, which is quite restrictive.

[0006] Utility model patent CN212645913U discloses an infrared detection device and a display terminal equipped with the infrared detection device. The infrared detection device includes a Fresnel lens and a digital pyroelectric infrared sensor. The Fresnel lens is used to focus infrared light and propagate it along the detection area divided by the lens unit. The digital pyroelectric infrared sensor is used to sense the intensity change of infrared light within the detection area and output an electrical signal. The above-mentioned infrared detection device uses a Fresnel lens to quickly sense the intensity change of infrared light in the detection area, but it is limited to the large-range, single-sensory detection provided by the Fresnel lens.

[0007] The invention patent publication number CN110213862A discloses an intelligent controller for presence-based human infrared detection. This intelligent controller includes a Fresnel lens, a human infrared sensor, and a processing module. When the human infrared sensor detects a human body within its detection range, the human infrared sensor sends a signal to the processing module, and the processing module sends a signal to the lighting fixture to turn on the lighting fixture. However, it is also limited to the wide-range and single sensing detection provided by the Fresnel lens.

[0008] Current human body sensors are mainly used to detect moving human bodies, and there are no mature static human body sensors. Theoretically, there are three common methods for detecting static human bodies: infrared pyroelectric detection, infrared thermometry, and millimeter-wave radar detection. Infrared pyroelectric detection can only passively detect moving human bodies, not stationary ones. When used for detecting static human bodies, it becomes active, meaning the infrared probe actively moves to detect stationary bodies. However, this method cannot achieve stable and reliable detection in the early stages because the rotation of the infrared probe can cause malfunctions due to airflow on the surface and temperature differences in the ambient environment (temperature varies in different areas). This can lead to the detection being incorrectly identified as present even when no one is actually within the detection range. Furthermore, it cannot achieve large-angle or 360-degree detection. Infrared thermometry, whether using a dot matrix or array, and radar detection methods also cannot achieve large-angle or 360-degree wide-range detection. Summary of the Invention

[0009] To address the technical problem that existing static human body detection methods cannot achieve large-angle and large-area detection, this invention provides a human body sensor and a human body sensing detection system.

[0010] On one hand, the technical solution of the human body sensor provided in this application is as follows: a human body sensor includes a sensing module, a head shell, a main shell, a main base, a first driving component and a second driving component. The sensing module is used to sense the human body. The main shell is rotatably mounted on the main base in the X-plane, and the head shell is rotatably mounted on the main shell in the Y-plane. The first driving component is used to drive the head shell to rotate, and the second driving component is used to drive the main shell to rotate. The first driving component and the second driving component jointly drive the sensing module to scan and detect a static human body at a certain angle and within a certain range.

[0011] By adopting the above technical solution, this application, through a special structural design, enables the main body shell to rotate in the X plane (360 degrees) and the head shell to rotate in the Y plane (180 degrees). Under the joint drive of the first drive component and the second drive component, the sensing module can scan and detect static human bodies in a large angle and a large range, thereby achieving effective and stable detection of static human bodies.

[0012] Preferably, the main body shell is provided with a first rotating shaft, the head shell is rotatably mounted on the first rotating shaft, the first drive assembly includes a second motor, the second motor is fixedly mounted inside the head shell, and the motor shaft of the second motor is fixedly mounted on the main body shell.

[0013] By adopting the above technical solution, the second motor can drive the head shell to rotate, thereby achieving the desired movement.

[0014] Preferably, the main body shell includes a turntable, which is rotatably mounted on the main body base, and the second drive assembly includes a third motor and a drive gear set, wherein the third motor drives the turntable to rotate through the drive gear set.

[0015] By adopting the above technical solution, the third motor can drive the main body shell to rotate, achieving the desired motion.

[0016] Preferably, the main body shell can rotate 360 ​​degrees in the X plane, and the head shell can rotate 180 degrees in the Y plane.

[0017] Preferably, the sensing module is an infrared pyroelectric detection module, an infrared temperature measurement detection module, or a radar detection module.

[0018] By adopting the above technical solution, regardless of which detection module is used in the sensing module, it is possible to achieve large-angle and large-range scanning detection of static human bodies.

[0019] Preferably, the sensing module is disposed at the top of the head shell.

[0020] By adopting the above technical solution, it is possible to better perform scanning and detection of static human bodies.

[0021] Preferably, the sensing module is an infrared pyroelectric detection module, comprising a housing, a probe, a blocking component, and a third driving component. The probe is disposed in the housing, and the housing has a sensing port for the probe to receive signals. The probe has a first sensing area. The blocking component is movably mounted in the housing, and the blocking component can block the sensing port. The blocking component can adjust the blocking area of ​​the sensing port by moving, so that the probe has a second sensing area, which is smaller than the first sensing area. The third driving component is disposed in the housing and connected to the blocking component. The driving component is configured to drive the blocking component to move, so that the effective sensing range of the probe passively changes from the first sensing area to the second sensing area.

[0022] Preferably, the blocking assembly includes a baffle, a support shaft, and a connector. The baffle is used to block the sensing port. The support shaft is rotatably connected to the housing. The two ends of the connector are respectively connected to the baffle and the support shaft. The support shaft can rotate to drive the connector to swing, thereby causing the baffle to move around the probe at the sensing port.

[0023] Preferably, the baffle is provided with a detection window for providing the second sensing area. The detection window extends through the baffle. When the baffle is in a closed state, the detection window and the probe pass through a reference centerline pointing in the detection direction of the probe.

[0024] On the other hand, the technical solution adopted by the human body sensing detection system provided in this application is as follows: a human body sensing detection system, including the human body sensor as described above, and the human body sensing detection system further includes: The switching trigger module is used to determine whether the state switching conditions are met, and outputs state switching information based on the determination result; The adjustment and control module is used to generate switching drive information based on state switching information and send the switching drive information to the drive component so that the drive component drives the blocking component to move according to the switching drive information.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. This application, through a special structural design, enables the main body shell to rotate in the X-plane and the head shell to rotate in the Y-plane. Under the joint drive of the first and second drive components, the sensing module can scan and detect static human bodies over a large angle and a wide range, thereby achieving effective and stable detection of static human bodies. 2. The sensing module of this application is equipped with a blocking component, which can switch between a large viewing angle mode and a small viewing angle mode. When sensing and detecting a stationary human body, it is necessary to switch to the small viewing angle mode to reduce the effective detection range of the sensing module and improve the accuracy of static human body sensing. Attached Figure Description

[0026] Figure 1 This is a front view of the sensing module according to Embodiment 1 of this application, wherein the sensing module is in the open state; Figure 2 This is a schematic diagram illustrating the state switching of the sensing module, in which... Figure 2 The sensing module in A is in the open state. Figure 2 The sensing module in B is in a closed state; Figure 3 yes Figure 1 Exploded view of the sensing module in the image; Figure 4 This is a cross-sectional view of the sensor module in the open state; Figure 5 This is a cross-sectional view of the sensing module in a closed state; Figure 6 This is a schematic diagram of a blocking component in a closed state; Figure 7 yes Figure 6 Exploded view of the middle blocking component; Figure 8 This is an assembly diagram of the top cover, probe, circuit board, and mounting bracket; Figure 9 This is an assembly diagram of the mounting block and mounting bracket; Figure 10 This is an assembly diagram of the top cover, circuit board, and mounting bracket; Figure 11 This is a schematic diagram of the state switching of the sensing module in Embodiment 2 of this application; Figure 12 This is a front view of a human body sensor according to an embodiment of this application, wherein the sensing module is in a closed state; Figure 13 This is a schematic flowchart of the human body sensing detection method according to an embodiment of this application; Figure 14 This is a schematic diagram of the human body sensing detection system according to an embodiment of this application; Figure 15 This is a perspective view of a second embodiment of the human body sensor according to this application; Figure 16 This is an exploded structural diagram of Embodiment 2 of the human body sensor of this application; Figure 17 This is an exploded structural diagram of another aspect of the second embodiment of the human body sensor in this application; Figure 18 This is an inverted exploded view of the second embodiment of the human body sensor of this application. Figure 19 This is a schematic diagram of the internal structure of the main body base described in Embodiment 2 of the human body sensor of this application; Figure 20 This is a perspective view of the third embodiment of the human body sensor in this application; Figure 21 This is an exploded structural diagram of the third embodiment of the human body sensor in this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Mounting bracket; 12. Top cover; 121. Connecting ring; 1211. Arc-shaped concave surface; 122. Sensing port; 123. Slide hole; 124. Connecting column; 1243. Relief groove; 125. Positioning block; 2. Probe; 21. Sensing element; 22. Optical lens; 221. Buckle; 3. Blocking assembly; 31. Baffle; 311. Detection window; 312. Detection groove; 313. Inner extension; 314. Positioning protrusion; 315. Positioning groove; 32. Support shaft; 321. Drive shaft; 3211. Drive gear; 322. Driven shaft; 3221. Driven gear; 33. Connecting piece; 331. Drive gear; 332. Positioning part; 35. Fixing clamp; 351. Blocking block; 352. Connecting strip; 36. Magnetic component; 4. Third drive assembly; 41. First motor; 42. Main gear; 5. Base plate; 51. Support platform; 511. First limiting groove; 52. Mounting block; 521. Second limiting groove; 53. Side plate; 54. Mounting screw; 522. Snap-in interface; 56. Mounting part; 561. Snap-in block; 562. Connecting pipe; 57. Cover block; 571. Hanging ring; 58. Positioning groove; 59. Clearance hole; 6. Support plate; 61. Rotating hole; 62. Mounting groove; 63. Mounting snap-in; 64. Connecting block; 65. Fixing component; 7. Circuit board; 71. Connecting part; 8. Head shell; 81. Second motor; 82. Mounting port; 9. Main shell; 91. Third motor; 92. Accommodating groove; 93. First rotating shaft; 94. Turntable; 95. Drive gear set; 10. Main body base; 20. Infrared temperature measurement module; 30. Radar detection module. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-21 This application will be described in further detail.

[0029] This application provides a sensing module.

[0030] Example 1: Refer to Figure 1 and Figure 2 The sensing module includes a housing 1, a probe 2, a blocking component 3, and a third driving component 4. The housing 1 provides support for the probe 2, the blocking component 3, and the third driving component 4. The probe 2 is used to collect signals from the environment within its effective detection range. The blocking component 3 has an open state and a closed state. The blocking component 3 can switch states by moving itself and adjust the effective detection range of the probe 2. The third driving component 4 provides a power source for the movement of the blocking component 3.

[0031] Reference Figure 2The housing 1 includes a mounting bracket 11 and a top cover 12, which are arranged vertically as shown in the figure and are fixed together by fasteners 65. The mounting bracket 11 includes a base plate 5 and a plurality of support plates 6 disposed on the base plate 5. Each support plate 6 is arranged in pairs, and a space is left between corresponding two support plates 6 for accommodating the blocking assembly 3. The top cover 12 has an inner side and an outer side. The inner side of the top cover 12 refers to the side of the top cover 12 facing the mounting bracket 11, and the outer side of the top cover 12 refers to the side of the top cover 12 away from the mounting bracket 11. A connecting ring 121 is provided in the middle of the inner side of the top cover 12. A sensing port 122 is formed inside the connecting ring 121, through which the probe 2 can be exposed on the top cover 12.

[0032] Reference Figure 1 The probe 2 is fixedly disposed between the top cover 12 and the mounting bracket 11. The position of the connecting ring 121 corresponds to the position of the probe 2. When the probe 2, top cover 12, and mounting bracket 11 are assembled, the probe 2 can be exposed on the outside of the top cover 12 through the sensing port 122, with the detection end of the sensing element 21 facing the sensing port 122. Specifically, the probe 2 in this embodiment uses pyroelectric infrared sensing technology, which can receive infrared signals from the environment.

[0033] Reference Figure 1 In this embodiment, the detection range of probe 2 has two types: preset detection range and effective detection range. The preset detection range refers to the range of signals in the environment that probe 2 can receive under ideal conditions. This detection range is a preset value, which is set after probe 2 leaves the factory and will not change spontaneously by probe 2 during operation.

[0034] Reference Figure 2 The effective detection range refers to the range of signals from the environment that the probe 2 can receive under actual operating conditions. During operation, since signals from the environment first enter the sensing port 122 from the front, pass through the sensing port 122, and are then received by the probe 2, the size of the effective detection range is related to the ability of the sensing port 122 to allow signals to pass through, that is, to the degree to which the sensing port 122 is blocked. (Refer to...) Figure 2 A. If there is no obstruction at the sensing port 122, then the effective detection range of probe 2 is the preset detection range of probe 2. (Refer to...) Figure 2 B. If the sensing port 122 is blocked, some signals in the environment cannot pass through the sensing port 122 normally, and the effective detection range of the probe 2 is less than the preset detection range of the probe 2.

[0035] Reference Figure 4The blocking assembly 3 includes a baffle 31, a support shaft 32, and a connector 33. The baffle 31 is movable, and as it moves to different positions in front of the sensor port 122, it blocks the sensor port 122 to varying degrees. The support shaft 32 is rotatably connected between a pair of support plates 6, and the two ends of the connector 33 are fixedly connected to the baffle 31 and the support shaft 32, respectively. When the support shaft 32 rotates, it causes the connector 33 to swing, and the connector 33 causes the baffle 31 to move in a circular motion around the support shaft 32.

[0036] Reference Figure 4 The maximum distance between the baffle 31 and the support shaft 32 is greater than the maximum distance between the probe 2 and the support shaft 32, so as to reduce the risk of the baffle 31 colliding with the probe 2 during movement. A slide hole 123 is provided on the outer side of the top cover 12. The slide hole 123 is a through hole structure. The position and shape of the slide hole 123 correspond to the moving path and cross-sectional shape of the baffle 31, so that the baffle 31 can pass through the slide hole 123 to the top cover 12 when moving.

[0037] Reference Figure 5 Specifically, the baffle 31 is provided with a detection window 311, which extends through the baffle 31. The specific position of the detection window 311 is related to the reference center line A of the probe 2, where the reference center line A refers to a straight line pointing in the detection direction of the probe 2 and passing through the center point of the probe 2.

[0038] Reference Figure 4 and Figure 5 In this embodiment, the baffle 31 has at least two states: an open state and a closed state. When in the open state, the baffle 31 minimizes the obstruction area of ​​the sensing port 122, or the baffle 31 does not obstruct the sensing port 122. In this state, environmental signals can freely pass through the sensing port 122, maximizing the effective detection range of the probe 2. Specifically, the baffle 31 can also be housed within the slide hole 123. When in the closed state, the baffle 31 covers and obstructs the sensing port 122, and the detection window 311 and the probe 2 respectively pass through the reference center line A. In this state, environmental signals can only pass through the sensing port 122 via the detection window 311, minimizing the effective detection range of the probe 2. Corresponding to whether the sensing port 122 is blocked, the probe 2 has a first sensing area and a second sensing area. When the baffle 31 is in the open state, the sensing port 122 is not blocked by the baffle 31, and the first sensing area of ​​the probe 2 corresponds to the area provided by the sensing port 122. When the baffle 31 is in the closed state, the sensing port 122 is blocked by the baffle 31, and the first sensing area of ​​the probe 2 corresponds to the area provided by the detection window 311.

[0039] Reference Figure 3In this embodiment, a positioning part 332 is provided on the side of the connector 33 away from the reference center line A and close to the support shaft 32. The base plate 5 is provided with a positioning groove 58 corresponding to the positioning part 332. When the baffle 31 is in the closed state, the positioning part 332 is accommodated in the positioning groove 58 and abuts against the base plate 5 to limit the connector 33 from continuing to swing, thereby limiting the maximum range of motion of the baffle 31.

[0040] Reference Figure 3 The third drive assembly 4 is mounted on the mounting bracket 11 and is connected to the support shaft 32 via a transmission connection. The third drive assembly 4 is an electrically controlled device that can drive the support shaft 32 to rotate based on the control signals it receives. This rotation includes rotation in different directions. Specifically, for a support shaft 32, a forward rotation in a certain direction can drive the baffle 31 to switch from an open state to a closed state, while the corresponding reverse rotation can drive the baffle 31 to switch from a closed state to an open state, so that the baffle 31 has the function of reciprocating motion and switching between different states.

[0041] The implementation principle of the sensing module in this embodiment is as follows: Utilizing the movable baffle 31 on the top cover 12, the baffle 31 can be moved to different positions to adjust the blocking area of ​​the sensing port 122, thereby adjusting the effective detection range of the probe 2. When the probe 2 needs to use a larger effective detection range, the baffle 31 can be switched to the open state or kept in the open state, so that signals from the environment can be received by the probe 2 through the sensing port 122, thereby increasing the scanning viewing angle. When the probe 2 needs to use a larger effective detection range, the baffle 31 can be switched to the closed state or kept in the closed state, so that signals from the environment can only enter the sensing port 122 through the detection window 311 and then be received by the probe 2, thereby reducing the scanning viewing angle.

[0042] It is worth noting that the probe 2 mentioned above requires a larger / smaller effective detection range for detection. Although this requirement is related to the detection range, it is less related to the total area of ​​the environment. That is, in an environment of the same area, probe 2 may require a larger effective detection range, or it may need to use a larger effective detection range for detection. For example, in the embodiments of this application, probe 2 needs to receive infrared signals radiated from the environment. The system analyzes the infrared signals to obtain the temperature difference of individual locations or objects in the environment, thereby detecting whether a target object (such as a human body) is present in the environment. Based on the above detection principle, the specific application scenario where probe 2 requires a larger effective detection range is: in the entire environment, the overall temperature is relatively uniform, and the temperature difference between different locations is small. In this case, using a larger effective detection range can improve detection efficiency. The specific application scenario where probe 2 requires a smaller effective detection range is: in the entire environment, the overall temperature is relatively uneven, and the temperature difference between different locations is large, such as the large temperature difference between the left and right areas. During the detection and analysis process, it may be mistakenly identified as the presence of a target object. In this case, using a smaller effective detection range can improve detection accuracy and reduce the risk of system misjudgment.

[0043] Reference Figure 5 and Figure 6 Regarding a non-limiting specific description of the structure of the blocking component 3, in a preferred example, the number of baffles 31 is at least two, preferably two, and the two baffles 31 are symmetrically arranged in a plane passing through the reference center line A and parallel to the support axis 32. On the side of each baffle 31 near the reference center line A, i.e., on the side where the two baffles 31 are positioned opposite each other, a detection groove 312 is provided. The detection groove 312 is located in the middle of the side of the baffle 31, and the openings of the two detection grooves 312 are positioned opposite each other. Each baffle 31 is provided with a corresponding support shaft 32. The two ends of the baffle 31 and the two ends of the support shaft 32 are connected and fixed by two connectors 33 respectively. A reserved space is formed between the baffle 31, the support shaft 32 and the two connectors 33. Specifically, when each baffle 31 is in the closed state, the probe 2 is housed in this reserved space, and the two baffles 31 cooperate with each other. The detection grooves 312 on the two baffles 31 combine to form a complete detection window 311. When each baffle 31 switches from the closed state to the open state, each baffle 31 moves away from the reference center line A. During this process, the two baffles 31 move in opposite directions and gradually penetrate into the slide hole 123. When each baffle 31 is in the open state, each baffle 31 does not block the sensing port 122.

[0044] Reference Figure 5 and Figure 6Regarding a non-limiting description of the shape of the baffle 31, in a preferred example, the baffle 31 is a spherical portion, and its surface has a continuous arcuate curve, with the center of the arc corresponding to the position of the support shaft 32. This allows the overall shape of the baffle 31 to match its circular motion trajectory, reducing the space required for the movement of the baffle 31 within the device, improving space utilization, and resulting in a more compact overall structure. Preferably, an inner extension 313 extends from the side of the baffle 31 away from the reference center line A. When the baffle 31 is in the closed state, the entire baffle 31 is exposed outside the sensing port 122, but the inner extension 313 still passes through and remains within the slide hole 123, reducing the risk of foreign objects entering the housing 1 through the slide hole 123.

[0045] Reference Figure 6 and Figure 7 Regarding a non-limiting specific description of the cooperation relationship between the two baffles 31, in a preferred example, the side of the baffle 31 with the detection groove 312 is provided with a positioning protrusion 314 and / or a positioning groove 315. The shape and position of the positioning protrusion 314 and the positioning groove 315 correspond to each other. When the two baffles 31 are in the closed state, each positioning protrusion 314 on one baffle 31 can engage with each positioning groove 315 on the other baffle 31. This engagement has a limiting effect on the two baffles 31, restricting the relative movement of the two baffles 31 after they are closed, reducing loosening, and allowing the two detection grooves 312 to be aligned, thereby maintaining a relatively complete shape of the detection window 311. Preferably, the two sides of the positioning protrusion 314 gradually narrow in the direction away from the baffle 31, while the two sides of the positioning groove 315 also gradually expand in the direction away from the baffle 31. As the two baffles 31 gradually approach each other, the two sides of the positioning protrusion 314 and the inner walls of the two sides of the positioning groove 315 have a mutual guiding effect, so that the positioning protrusion 314 can enter the positioning groove 315 more smoothly and reduce the risk of jamming.

[0046] Reference Figure 6 Furthermore, at least one positioning protrusion 314 or positioning groove 315 is provided on each side of the detection groove 312. In this embodiment, each baffle 31 is provided with one positioning protrusion 314 and one positioning groove 315. On one baffle 31, the positioning protrusion 314 and positioning groove 315 are located on the left and right sides of the detection groove 312, respectively, while on the other baffle 31, the positioning protrusion 314 and positioning groove 315 are located on the right and left sides of the detection groove 312, respectively. In a feasible example, one baffle 31 may also be provided with two positioning protrusions 314 distributed on both sides of the detection groove 312, and the other baffle 31 may be provided with two positioning grooves 315 correspondingly distributed on both sides of the detection groove 312.

[0047] Reference Figure 5 and Figure 6 Regarding a non-limiting specific description of the structural design for improving the stability of the fit between the various baffles 31, in a preferred example, each connector 33 is fixedly provided with a magnetic element 36. When the baffles 31 are in the closed state, the adjacent magnetic elements 36 attract each other, and the attraction pushes the baffles 31, allowing the baffles 31 to remain in the closed state relatively stably, thereby improving the integrity of the detection window 311. On the other hand, due to the limitation of the stroke range of the third drive assembly 4, or the influence of the transmission efficiency between the third drive assembly 4 and the support shaft 32, there may be a gap after the two baffles 31 switch to the closed state. The attraction between the two magnetic elements 36 can push the baffles 31, allowing the baffles 31 to remain in contact with each other, thereby improving the stability of the detection window 311.

[0048] Reference Figure 6 Regarding the material and shape of the magnetic component 36, a non-limiting specific description is provided. In a preferred example, the magnetic component 36 is a permanent magnet, and the magnetic component 36 is cylindrical in shape, with its axis perpendicular to the axis of the support shaft 32. When the baffles 31 are in the closed state, the axes of the two magnetic components 36 coincide, and the two ends of the two magnetic components 36 with opposite polarities face each other, generating the maximum attraction. In this embodiment, the magnetic component 36 moves synchronously with the connecting member 33, and the movement trajectory of the magnetic component 36 is an arc-shaped trajectory.

[0049] Reference Figure 7 It is worth noting that the two magnetic components 36 do not maintain a significant attraction indefinitely. As the two baffles 31 move away from each other in opposite directions, the distance between the two magnetic components 36 gradually increases, and the two magnetic components 36 gradually move away from their facing state. When the angle between the two connecting members 33 is greater than a preset threshold, the two magnetic components 36 do not generate a significant attraction (i.e., an attraction strong enough to drive the two baffles 31 to move in a free state). Correspondingly, as the two baffles 31 move closer to each other in opposite directions, the distance between the two magnetic components 36 gradually decreases, and the two magnetic components 36 gradually return to their facing state. When the angle between the two connecting members 33 is less than or equal to the preset threshold, the two magnetic components 36 generate a significant attraction, pushing the two baffles 31 closer together. Furthermore, the magnetic element 36 is disposed at one end of the connector 33 near the support shaft 32, that is, the distance between the magnetic element 36 and the baffle 31 is greater than the distance between the magnetic element 36 and the support shaft 32, thereby reducing the radius of the arc-shaped movement trajectory of the magnetic element 36, so that the two magnetic elements 36 can more easily reach a state of facing each other during the process of moving closer to each other, and generate attraction in a timely manner.

[0050] Reference Figure 6 and Figure 7 Regarding a non-limiting specific description of the mounting structure between the connector 33 and the magnetic element 36, in a preferred example, the connector 33 is provided with a fixing clamp 35, which cooperates with the connector 33 to form a ring structure. The magnetic element 36 is inserted into the fixing clamp 35, and the inner wall of the fixing clamp 35 abuts against the periphery of the magnetic element 36 to fix the magnetic element 36 by friction. One end of the fixing clamp 35 near the reference center line A forms a fixing end, and a blocking block 351 is fixedly provided on the fixing end. The blocking block 351 is arranged radially along the magnetic element 36 to block the opening of the fixing end and prevent the magnetic element 36 from completely detaching from the fixing end. In the closed state, the fixing ends of two adjacent fixing clamps 35 face each other, and the two magnetic elements 36 attract each other. Under the action of the attraction, the magnetic element 36 abuts against the blocking block 351.

[0051] Reference Figure 7 Preferably, the number of blocking blocks 351 is at least two, and each blocking block 351 is circumferentially spaced around the fixed end. In this embodiment, the number of blocking blocks 351 is preferably two. Furthermore, a gap is left between the blocking blocks 351 and the fixing clamp 35 so that one end of the magnetic element 36 can be exposed at the fixed end, and adjacent blocking blocks 351 are spaced apart radially from the magnetic element 36 to reduce the obstruction of the magnetic field of the magnetic element 36 by each blocking block 351. Specifically, the fixing clamp 35 and each blocking block 351 are connected by connecting strips 352, each connecting strip 352 extending axially along the magnetic element 36, and each connecting strip 352 abutting against the sidewall of the magnetic element 36.

[0052] Reference Figure 7 The end of the fixing clamp 35 furthest from the fixing end forms the mounting end. Unlike the fixing end, the opening of the mounting end is unobstructed. When assembling the connector 33 and the magnetic component 36, the assembler can insert one end of the magnetic component 36 into the fixing clamp 35 from the mounting end and push the magnetic component 36 to make it abut against the blocking block 351. Preferably, the opening of the mounting end has a chamfered surface to guide the insertion of the magnetic component 36 into the fixing clamp 35.

[0053] Reference Figure 7Regarding a non-limiting specific description of the rotational drive of a single support shaft 32, in a preferred example, the third drive assembly 4 includes a first motor 41, which is fixed to the side of the base plate 5 away from the top cover 12. A main gear 42 is coaxially disposed on the drive shaft of the first motor 41, and a drive gear portion 331 is coaxially connected to the support shaft 32. The base plate 5 has a clearance hole 59, through which the drive gear portion 331 passes and meshes. The first motor 41 drives the main gear 42 to rotate via a drive rod, which in turn drives the drive gear portion 331 to rotate, thereby causing the support shaft 32 to rotate.

[0054] Reference Figure 6 and Figure 7 Considering the travel of the baffle 31, the support shaft 32 does not need to rotate at a large angle (such as 180°). In this embodiment, the drive gear part 331 is specifically an arc-shaped block fixed to the connector 33. The central angle of the arc-shaped block is related to the maximum rotation angle of the support shaft 32. The outer edge of the drive gear part 331 is formed with teeth for the main gear 42 to mesh.

[0055] Reference Figure 6 and Figure 7 Regarding a non-limiting specific description of the rotational drive of multiple support shafts 32, in a preferred example, the two support shafts 32 are divided into a driving shaft 321 and a driven shaft 322. The driving shaft 321 has a driving gear portion 3211 formed along its circumference, and the driven shaft 322 has a driven gear portion 3221 meshing with the driving gear portion 3211 along its circumference. When the driving shaft 321 rotates, the driving gear portion 3211 and the driven gear portion 3221 mesh and drive, causing the driven shaft 322 and the driving shaft 321 to rotate synchronously. Preferably, the number of first motors 41 is the same as the number of driving shafts 321. In this embodiment, the number of first motors 41 is one, and the number of drive gear portions 331 is also one, with the drive gear portion 331 fixed to the connecting member 33 corresponding to the driving shaft 321. By utilizing the transmission design of the main shaft and driven shaft 322, the third drive component 4 only needs to drive the drive shaft 321 to rotate, which can drive multiple support shafts 32 to rotate simultaneously. On the one hand, it can save the number of drive sources and simplify the overall structure. On the other hand, it can enhance the synchronization of the movement of each baffle 31 and improve the stability when the baffle 31 changes state.

[0056] Reference Figure 7In this embodiment, in order to improve space utilization and make the overall structure of the device more compact, each support shaft 32 is provided with only one driving gear part 3211 or driven gear part 3221, and each support shaft 32 is provided with only one magnetic element 36. The driving gear part 3211 or driven gear part 3221 is located at one end of the support shaft 32, and the magnetic element 36 is fixed to the other end of the support shaft 32.

[0057] Reference Figure 7 and Figure 8 Regarding a non-limiting specific description of the installation structure of the support shaft 32 and the support plate 6, in a preferred example, the base plate 5 is generally rectangular, and there are two support plates 6. The two support plates 6 are respectively disposed on both sides of the base plate 5 and distributed along the length of the side of the base plate 5. The opening formed between the base plate 5 and the two support plates 6 faces the top cover 12. Each support shaft 32 is disposed between the two support plates 6. On the opposite side of each support plate 6, there is a rotating hole 61 corresponding to the end of each support shaft 32. The inner diameter of the rotating hole 61 matches the diameter of the end of the support shaft 32. The two ends of the support shaft 32 are respectively inserted into the corresponding rotating hole 61, realizing a rotatable connection between the support shaft 32 and the support plate 6. Preferably, the rotating hole 61 is a blind hole, and the distance between the bottoms of the two rotating holes 61 is adapted to the length of the support shaft 32. The two support plates 6 have a limiting effect on the support shaft 32, restricting the axial displacement of the support shaft 32.

[0058] Reference Figure 7 and Figure 8 On the side of the support plate 6 away from the base plate 5, multiple mounting slots 62 are provided, each corresponding to a rotating hole 61. Each mounting slot 62 connects to its corresponding rotating hole 61. A mounting latch 63 is formed at the connection between the mounting slot 62 and the rotating hole 61. The width of the mounting latch 63 is smaller than the inner diameter of the rotating hole 61. The side walls of the mounting slot 62 gradually widen away from the mounting latch 63, and the width of the slot at the end of the mounting slot 62 away from the mounting latch 63 is greater than the inner diameter of the rotating hole 61. When installing the support shaft 32, the user can place both ends of the support shaft 32 into the slots corresponding to the mounting slots 62. Since the width of the slot openings 62 is greater than the diameter of the ends of the support shaft 32, both ends of the support shaft 32 can easily enter the corresponding mounting slots 62. Subsequently, the user can apply force to the support shaft 32, gradually bringing it closer to the mounting latch 63, and using an interference fit, the ends of the mounting shaft are engaged in the mounting latch 63 to enter the interior of the rotating hole 61. Since the width of the mounting slot 63 is smaller than the diameter of the end of the support shaft 32, the support shaft 32 is not easy to disengage from the rotation hole 61 after entering the rotation hole 61, thus achieving relative fixation between the support shaft 32 and the support plate 6.

[0059] Reference Figure 7 and Figure 9Regarding a non-limiting specific description of the mounting structure of the support shaft 32 and the base plate 5, in a preferred example, a support platform 51 and a mounting block 52 are provided in the middle of the base plate 5, which cooperate to limit the position of the support shaft 32. The support platform 51 consists of two parallel support plates, which are fixedly mounted on the surface of the base plate 5. A first limiting groove 511 for each support shaft 32 is formed on the side of the support platform 51 away from the base plate 5. A second limiting groove 521 for each support shaft 32 is formed on the side of the mounting block 52 close to the support platform 51. When the mounting block 52 and the support platform 51 are installed together, the openings of the first limiting groove 511 and the second limiting groove 521 face each other, and a limiting space for the support shaft 32 is formed between the first limiting groove 511 and the second limiting groove 521. Preferably, the first limiting groove 511 and the second limiting groove 521 are both semi-circular, the limiting space is circular in whole and the center of the circle passes through the axis of the rotating hole 61, and the inner diameter of this limiting space matches the diameter of the support shaft 32, so that the support shaft 32 is limited between the first limiting groove 511 and the second limiting groove 521, and can also rotate between the support platform 51 and the mounting block 52.

[0060] Reference Figure 7 and Figure 9 Regarding a non-limiting specific description of the mounting structure of the support platform 51 and the mounting block 52, in a preferred example, the support platform 51 and the mounting block 52 are detachably connected. Specifically, side plates 53 are fixedly provided on both sides of the base plate 5 adjacent to the two support plates 6, and mounting screws 54 are respectively provided at both ends of the mounting block 52. The mounting screws 54 pass through the mounting block 52 and are threadedly connected to the side plates 53. In this embodiment, the support platform 51 and the mounting block 52 are preferably detachably connected by bolting. In another feasible embodiment, the support platform 51 and the mounting block 52 can also be detachably connected by snap-fit. Further, the support platform 51 has snap-fit ​​interfaces 522 at both ends, and the two side plates 53 are respectively accommodated in the two snap-fit ​​interfaces 522. The two snap-fit ​​interfaces 522 have a positioning function for the mounting block 52, making it convenient for the user to tighten the mounting screws 54. When installing the support shafts 32, after each support shaft 32 is snapped into the corresponding rotating hole 61, each support shaft 32 is accommodated in the corresponding first limiting groove 511. Then, the user can fix the mounting block 52 on the support platform 51 so that each support shaft 32 is limited between the support platform 51 and the mounting block 52. The support platform 51 and the mounting block 52 can prevent the support shafts 32 from moving in the direction of disengaging from the mounting slot 63, so that the fixation between the support shafts 32 and the support plate 6 is more stable.

[0061] Reference Figure 9Specifically, wedge-shaped surfaces are provided at both ends of the support platform 51. The wedge-shaped surfaces are located on the side of the support platform 51 away from the base plate 5, and an angle is formed between the wedge-shaped surfaces and the surface of the base plate 5. The distance between the wedge-shaped surfaces and the base plate 5 gradually decreases in the direction away from the first limiting groove 511, so that the support platform 51 is trapezoidal in shape. The mounting block 52 is provided with an inclined portion that matches the wedge-shaped surfaces, so that the mounting block 52 has a trapezoidal space for matching the support platform 51. When the support platform 51 and the mounting block 52 are aligned, the two inclined portions contact the two wedge-shaped surfaces respectively, and each first limiting groove 511 cooperates with the corresponding second limiting groove 521 to form a complete limiting space. In this embodiment, when the user installs the mounting block 52 on the support platform 51, the wedge-shaped surfaces and the inclined portions have a guiding effect, making it easier for the support platform 51 and the mounting block 52 to move relative to each other to an aligned state. In addition, the locking interface 522 has a positioning effect between the support platform 51 and the mounting block 52, which facilitates the user's assembly.

[0062] Reference Figure 3 Regarding a non-limiting specific description of the mounting structure of the top cover 12 and the mounting bracket 11, in a preferred example, the top cover 12 is generally disc-shaped, and a plurality of connecting posts 124 for connecting the mounting bracket 11 are fixedly provided on the top cover 12. Preferably, there are two connecting posts 124, and the positions of the two connecting posts 124 correspond to the positions of the two support plates 6. A space is left between the two connecting posts 124 for the baffle 31 and the connecting member 33 to accommodate and move. The support plate 6 is fixedly provided with a connecting block 64 for the connecting post 124 to cooperate with. The connecting block 64 and the connecting post 124 are detachably connected by a fixing member 65. In this embodiment, the fixing member 65 is a bolted structure, preferably a fixing screw. One side of the connecting post 124 has a threaded hole for the fixing screw to be connected. The fixing screw passes through the connecting block 64 and is threaded to the connecting post 124. In other embodiments, the fixing member 65 may also be a snap-fit ​​structure or a clamping structure. Specifically, a positioning block 125 is fixedly provided on the side of the connecting post 124 away from the top cover 12. The connecting block 64 has a through hole for the positioning block 125 to be inserted. The positioning block 125 has a positioning function for the connecting block 64 and the connecting post 124, preventing relative displacement between the connecting block 64 and the connecting post 124.

[0063] Reference Figure 7The length of the connecting post 124 is parallel to the axial direction of the top cover 12 and perpendicular to the bottom plate 5. A gap must always be maintained between the top cover 12 and the bottom plate 5 to provide sufficient space for the structure within the housing 1. This gap is provided by the cooperation between the connecting post 124 and the support plate 6. In practice, the width of the support plate 6 and the length of the connecting post 124 can compensate for each other. In other embodiments, to achieve the same gap as described above, if the width of the support plate 6 is shorter, the length of the connecting post 124 is extended; if the width of the support plate 6 is shorter, the length of the connecting post 124 is reduced. The specific value of this gap can also be set according to the actual volume of the probe 2 and the blocking assembly 3.

[0064] Reference Figure 7 and Figure 8 Specifically, the two connecting posts 124 connected to the top cover 12 are divided into a first connecting post 124a and a second connecting post 124b. The first connecting post 124a is located near the end of the support shaft 32 where the driving gear part 3211 or the driven gear part 3221 is located. The width of the first connecting post 124a is greater than the width of the second connecting post 124b, and the number of fixing members 65 provided on the first connecting post 124a is greater than the number of fixing members 65 provided on the second connecting post 124b. Since the driving gear part 3211 and the driven gear part 3221 both need to work through meshing transmission, they vibrate significantly during operation. The connecting posts 124 and connecting blocks 64 near this location are more prone to loosening compared to other connecting posts 124 and connecting blocks 64. Therefore, by increasing the contact area between the two and improving the fixing strength provided by the fixing members 65, the risk of loosening between the top cover 12 and the mounting bracket 11 can be specifically reduced. In this embodiment, the first connecting column 124a is detachably connected to the corresponding connecting block 64 by two spaced fixing screws, and the second connecting column 124b is detachably connected to the corresponding connecting block 64 by one fixing screw.

[0065] Reference Figure 8 Regarding a non-limiting specific description of the mounting structure of probe 2, top cover 12, and mounting bracket 11, in a preferred example, a circuit board 7 is disposed between the top cover 12 and the mounting bracket 11, and probe 2 is fixed to the circuit board 7. Connecting portions 71 are fixedly disposed at both ends of the circuit board 7. Space is provided between each set of connecting blocks 64 and connecting posts 124 for the connecting portions 71 to insert. Preferably, a recessed relief groove 1243 is provided on the side of the connecting post 124 away from the top cover 12, and the two connecting portions 71 are respectively accommodated in the spaces provided by the two relief grooves 1243.

[0066] Reference Figure 8Specifically, the two connecting portions 71 correspond to the first connecting post 124a and the second connecting post 124b, respectively. The width of the connecting portion 71 corresponding to the first connecting post 124a is greater than the width of the connecting portion 71 corresponding to the second connecting post 124b, thereby increasing the contact area between this connecting portion 71, the first connecting post 124a, and the corresponding mounting block 52, resulting in greater stability. The positioning block 125 of the first connecting post 124a is disposed in the middle of the relief groove 1243. The connecting portion 71 corresponding to the first connecting post 124a has a through hole for the positioning block 125 to pass through and be inserted, so that the connecting portion 71 is fixed between the first connecting post 124a and the corresponding connecting block 64. The connecting portion 71 corresponding to the second connecting post 124b has a through hole for a fixing screw to pass through. This fixing screw passes through the connecting block 64 and the connecting portion 71 in sequence, and is threadedly connected to the second connecting post 124b, so that the connecting portion 71 is fixed between the second connecting post 124b and the corresponding connecting block 64.

[0067] Reference Figure 8 Regarding a non-limiting specific description of the structure of probe 2, in a preferred example, probe 2 includes a sensing element 21 and an optical lens 22. The sensing element 21 is a pyroelectric infrared sensor, which can receive signals radiated from the environment (i.e., infrared radiation) when in operation. The optical lens 22 is used to increase the signal reception range (i.e., detection range) of the sensing element 21. The sensing element 21 is soldered onto the circuit board 7, while the optical lens 22 is fitted onto the probe 2 and fixed to the circuit board 7. The optical lens 22 is preferably a Fresnel lens, and it has a lens mount for engaging with the circuit board 7. The lens mount is generally rectangular, and each of its four sides has a snap-fit ​​element 221 that engages with the circuit board 7. The optical lens 22 is fixed to the circuit board 7 by the lens mount, allowing it to be fixed between the top cover 12 and the mounting bracket 11.

[0068] Reference Figure 10 Specifically, the connecting ring 121 is located in the middle of the top cover 12, and the optical lens 22 is located in the middle of the circuit board 7. The position of the connecting ring 121 corresponds to the position of the optical lens 22, and one end of the connecting ring 121 has an inner recessed arc-shaped concave surface 1211 that matches the optical lens 22 and is distributed in a ring. When the top cover 12, the mounting bracket 11, the circuit board 7 and the optical lens 22 are installed and fixed, the arc-shaped concave surface 1211 abuts against the outer surface of the optical lens 22, so that there is a force between the top cover 12 and the optical lens 22, which enhances the overall stability.

[0069] Reference Figure 9 and Figure 10Regarding a non-limiting description of the mounting structure of the first motor 41, in a preferred example, the base plate 5 is provided with a mounting portion 56 for accommodating the first motor 41 and a cover block 57 for fixing the first motor 41 in conjunction with the mounting portion 56. Both the mounting portion 56 and the cover block 57 are arched in shape, with their arched openings facing each other. A receiving space matching the shape of the body of the first motor 41 is formed between the mounting portion 56 and the cover block 57. The body of the first motor 41 is mounted within this receiving space, and the mounting portion 56 and the cover block 57 clamp the body of the first motor 41 to fix it to the base plate 5. Preferably, the fixed connection between the mounting portion 56 and the cover block 57 is a detachable connection, allowing the user to replace or repair the first motor 41. Specifically, a locking block 561 is fixedly installed on one side of the mounting part 56, and a connecting pipe 562 is fixedly installed on the other side. The inner side of the connecting pipe 562 is threaded. A hanging ring 571 that engages with the locking block 561 is fixedly installed on one side of the cover block 57, and a locking screw is installed on the other side. The locking screw passes through the cover block 57 and is threadedly connected to the connecting pipe 562, thereby achieving the installation and fixation between the cover block 57 and the mounting part 56. When installing the first motor 41, the first motor 41 can be placed between the mounting part 56 and the cover block 57, and the locking block 561 can be engaged with the hanging ring 571. Then, the mounting part 56 and the cover block 57 are fixed by the locking screw, and the mounting part 56 and the cover block 57 cooperate to clamp the first motor 41.

[0070] Reference Figure 3 Regarding a non-limiting specific description of the manufacturing method of the sensing module, in a preferred example, the top cover 12 is integrally molded by injection molding, the mounting bracket 11 is integrally molded by injection molding, and the baffle 31, connector 33 and support shaft 32 are also integrally molded by injection molding.

[0071] Example 2: Refer to Figure 10 and Figure 11 The difference between this embodiment and Embodiment 1 is that the blocking component 3 includes a baffle 31 made of flexible material. The baffle 31 can be folded and deformed around the axis of the support shaft 32, and a detection window 311 is provided in the middle of the baffle 31. Specifically, when the baffle 31 is in the open state, the baffle 31 is folded and stored in the housing 1; when the baffle 31 is in the closed state, the baffle 31 unfolds in a fan shape, covering the entire sensing port 122, and the detection window 311 faces the sensing port 122.

[0072] This application also provides a human body sensor.

[0073] Reference Figure 12The human body sensor includes any of the aforementioned sensing modules, and further includes a head shell 8, a main body shell 9, and a main body base 10. The head shell 8 is generally spherical and has a mounting opening 82, within which the sensing module is fixedly mounted. The main body shell 9 has a receiving groove 92 for accommodating the head shell 8, and the rotation axis of the head shell 8 is connected to the receiving groove 92. The rotation axis of the head shell 8 is defined as a first axis, and the head shell 8 and the main body shell 9 can rotate relative to each other around this first axis. In the illustrated direction, the first axis is parallel to the horizontal plane; therefore, the rotation between the head shell 8 and the main body shell 9 is a vertical rotation.

[0074] Reference Figure 12 The main outer shell 9 is rotatably connected to the main base 10. The axis of rotation of the main outer shell 9 is defined as the second axis. The main outer shell 9 and the main base 10 can rotate relative to each other around the second axis, and there is an angle between the first axis and the second axis. In the illustrated direction, the second axis is perpendicular to the horizontal plane, and the angle between the first axis and the second axis is 90°. Therefore, the rotation between the main outer shell 9 and the main base 10 is a left-right rotation.

[0075] Reference Figure 12 Specifically, the human body sensor also includes a second motor 81 for driving the head shell 8 to rotate and a third motor 91 for driving the main body shell 9 to rotate. The body of the second motor 81 is installed inside the head shell 8, and its output shaft passes through the head shell 8 and is fixed to the outside of the main body. Driven by the second motor 81, the sensing module can rotate vertically. The body of the third motor 91 is fixed to the main body base 10, and its output shaft is connected to the main body shell 9 via a transmission structure. Driven by the third motor 91, the sensing module can rotate horizontally. Using rotation in all directions (up, down, left, right), the sensing module can scan positions in multiple directions according to system control.

[0076] The human body sensor provided in this embodiment, since it includes the various modules of the aforementioned sensing module, can achieve the same technical effect as the aforementioned embodiment. For the principle analysis, please refer to the relevant description of the aforementioned sensing module, which will not be repeated here.

[0077] This application also provides a human body sensing detection method.

[0078] Reference Figure 13 and Figure 14 Human body sensing detection methods include: S1. Determine whether the state transition condition is met, and output the state transition information based on the determination result.

[0079] The state switching condition is used to determine whether the current human body sensing detection system needs to switch detection modes to meet different detection requirements. The detection modes include a wide-angle mode and a narrow-angle mode. In the wide-angle mode, the blocking component 3 is in the open state, while in the narrow-angle mode, the blocking component 3 is in the closed state.

[0080] The conditions for state switching include whether the current time point has been within a preset switching cycle since the last output of state switching information. Specifically, the human body detection system performs real-time timing, and at each switching cycle, the human body detection system will meet the state switching conditions and switch detection modes. For example, if the time spent in the wide-view mode reaches the switching cycle, it will switch from the wide-view mode to the narrow-view mode; if the time spent in the narrow-view mode reaches the switching cycle, it will switch from the narrow-view mode to the wide-view mode.

[0081] The conditions for state switching include whether active control information is received from the terminal device. The terminal device can be a PC or any smart electronic product capable of performing the corresponding functions, such as a smartphone or tablet. If it is a smartphone or similar smart electronic product, it can be achieved through a corresponding app. The terminal device communicates remotely with the human body detection system, and the user can send active control information to the human body detection system through the terminal device.

[0082] S2. Based on the state transition information, switch the detection mode. Step S2 includes: S21. Based on the state switching information, generate switching drive information and send the switching drive information to the third drive component 4.

[0083] S22, the third drive component 4 drives the blocking component 3 to move according to the switching drive information in order to switch the detection mode.

[0084] Based on the switching drive information, the third drive component 4 drives the blocking component 3 to move, so that the blocking component 3 switches from the open state to the closed state, or switches the blocking component 3 from the closed state to the open state.

[0085] S3. The sensing module performs human body sensing scanning based on the current detection mode.

[0086] The implementation principle of the human body sensing detection method provided in this application embodiment is as follows: In the wide-view mode, since the blocking component 3 is in the open state, the effective detection range of the sensing module is large, which can improve the range and efficiency of human body sensing and is suitable for sensing and detecting moving human bodies. When the sensing module needs to detect a stationary human body, it needs to actively move (rotate in the up, down, left, or right directions) to detect the stationary human body. However, if sensing and detection is performed in the wide-view mode, due to the large effective detection range of the sensing module, the movement of the sensing module may be misjudged by the airflow on the surface and the ambient temperature difference in the detected range. For example, the Fresnel lens has a detection angle of 120°. Within this range, the ambient temperature in the left area may be different from that in the right area, resulting in a temperature difference. When the sensing module rotates, it is equivalent to detecting the temperature change, which will lead to a false output, mistakenly identifying the presence of a human body. Therefore, when sensing and detecting a stationary human body, it is necessary to switch to the narrow-view mode to reduce the effective detection range of the sensing module and improve the accuracy of static human body sensing.

[0087] This application also provides a human body sensing detection system.

[0088] Reference Figure 14 The human body sensing detection system includes: The switching trigger module 101 is used to determine whether the state switching conditions are met, and outputs state switching information to the adjustment and control module 102 based on the determination result.

[0089] The adjustment and control module 102 is used to generate switching drive information based on the state switching information and send the switching drive information to the third drive component 4.

[0090] The third driving component 4 is used to drive the blocking component 3 to move according to the switching driving information in order to switch the detection mode.

[0091] The sensing module is used to perform human body sensing scanning based on the current detection mode.

[0092] The human body sensing detection system provided in this embodiment can realize each step of the human body sensing detection method in the aforementioned embodiment due to the functions of each module and the logical connection between them. Therefore, it can achieve the same technical effect as the aforementioned embodiment. The principle analysis can be found in the relevant description of the aforementioned method steps, which will not be repeated here.

[0093] As a second embodiment of the human body sensor described in this application, refer to Figures 15 to 19The human body sensor includes a sensing module, a head shell 8, a main shell 9, a main base 10, a first driving component, and a second driving component. The sensing module is used to sense the human body. The main shell 9 is rotatably mounted on the main base 10 in the X-plane, and the head shell 8 is rotatably mounted on the main shell 9 in the Y-plane. The first driving component is used to drive the head shell 8 to rotate, and the second driving component is used to drive the main shell 9 to rotate. The first driving component and the second driving component together drive the sensing module to scan and detect a static human body at a certain angle and within a certain range.

[0094] Reference Figure 15 In this embodiment, the sensing module is an infrared temperature measurement and detection module 20. The sensing module is set at the top of the head shell 8, which can better perform actual scanning and detection of static human bodies.

[0095] Reference Figure 16 and Figure 17 In this embodiment, the main body shell 9 is provided with a first rotating shaft 93, and the head shell 8 is rotatably mounted on the first rotating shaft 93. The first driving component includes a second motor 81, which is fixedly mounted inside the head shell 8, and the motor shaft of the second motor 81 is fixedly mounted on the main body shell 9. The head shell 8 can rotate 180 degrees in the Y plane.

[0096] Reference Figure 17 and Figure 18 In this embodiment, the main body shell 9 includes a turntable 94, which is rotatably mounted on the main body base 10. The second drive assembly includes a third motor 91 and a drive gear set 95. The third motor 91 drives the turntable 94 to rotate via the drive gear set 95. The main body shell 9 can rotate 360 ​​degrees in the X-plane.

[0097] The sensing module described in this application can scan and detect static human bodies over a wide angle and a large range. Here, "wide angle" can generally be understood as a 180-degree rotation in the Y-plane, and "large range" can be understood as a 360-degree rotation in the X-plane. Depending on actual needs, it can also be set to scan and detect static human bodies within a certain angle range of the maximum stroke.

[0098] This application, through a special structural design, requires the cooperation of a main controller (including logic algorithms, etc.) to enable the main body shell 9 to rotate in the X plane (360 degrees) and the head shell 8 to rotate in the Y plane (180 degrees). Under the joint drive of the first drive component and the second drive component, the sensing module can scan and detect static human bodies in a large angle and a large range, thereby achieving effective and stable detection of static human bodies.

[0099] Since both the first drive assembly and the second drive assembly of this application are powered by motors, the start and stop detection of the motors can be achieved by using Hall element detection. At the same time, the design should also include a rigid structural limit device to prevent excessive rotation by human intervention.

[0100] As a third embodiment of the human body sensor described in this application, refer to Figure 20 and Figure 21 The difference from Embodiment 2 is that the sensing module is a radar detection module 30. The radar detection module 30 does not require slow scanning; it only needs to rotate an angle in the X and Y planes, and then detect the product while it is stationary. If no one is detected at the current angle, it rotates to the next angle, and so on, continuously scanning and detecting. It can also achieve large-angle and large-range scanning detection.

[0101] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A human body sensor, characterized in that, The device includes a sensing module, a head shell (8), a main shell (9), a main base (10), a second motor (81), and a third motor (91). The sensing module is used to sense the human body. The main shell (9) is rotatably mounted on the main base (10) in the X-plane, and the head shell (8) is rotatably mounted on the main shell (9) in the Y-plane. The second motor (81) is used to drive the head shell (8) to rotate, and the third motor (91) is used to drive the main shell (9) to rotate. The second motor (81) and the third motor (91) together drive the sensing module to scan and detect a static human body at a certain angle and within a certain range. The sensing module is an infrared pyroelectric detection module, which includes a housing (1), a probe (2), a blocking component (3), and a third driving component (4). The probe (2) is disposed on the housing (1), and the housing (1) is provided with a sensing port (122) for the probe (2) to receive signals. The probe (2) has a first sensing area. The blocking component (3) is movably installed on the housing (1). The blocking component (3) can block the sensing port (122), and the blocking component (3) can adjust the blocking area of ​​the sensing port (122) by moving, so that the probe (2) has a second sensing area, which is smaller than the first sensing area. The third driving component (4) is disposed on the housing (1) and connected to the blocking component (3). The third driving component (4) is configured to drive the blocking component (3) to move, so that the effective sensing range of the probe (2) passively changes from the first sensing area to the second sensing area. The blocking assembly (3) includes a baffle (31), a support shaft (32), and a connector (33). The baffle (31) is used to block the sensing port (122). The support shaft (32) is rotatably connected to the housing (1). The two ends of the connector (33) are respectively connected to the baffle (31) and the support shaft (32). The support shaft (32) can drive the connector (33) to swing by rotation, so as to drive the baffle (31) to move around the probe (2) at the sensing port (122). Among them, there are two baffles (31) arranged symmetrically, and detection grooves (312) are opened on their opposite sides; when the two baffles (31) are in the closed state, the two detection grooves (312) combine to form a complete detection window (311) for providing the second sensing area. The detection window (311) penetrates the baffle (31), and the detection window (311) and the probe (2) pass through a reference center line pointing to the detection direction of the probe (2). The two baffles (31) are respectively provided with positioning protrusions (314) and positioning grooves (315); when the two baffles (31) are closed, the positioning protrusion (314) of one baffle (31) engages with the positioning groove (315) of the other baffle (31) to restrict the relative movement of the two baffles (31) after they are closed.

2. The human body sensor according to claim 1, characterized in that, The main body shell (9) is provided with a first rotating shaft (93), the head shell (8) is rotatably mounted on the first rotating shaft (93), the second motor (81) is fixedly mounted inside the head shell (8), and the motor shaft of the second motor (81) is fixedly mounted on the main body shell (9).

3. The human body sensor according to claim 1, characterized in that, The sensing module is located at the top of the head shell (8).

4. A human body sensing detection system, characterized in that, Including the human body sensor as described in claim 1, the human body sensing detection system further includes: The switching trigger module is used to determine whether the state switching conditions are met, and outputs state switching information based on the determination result; The adjustment and control module is used to generate switching drive information based on the state switching information and send the switching drive information to the third drive component (4) so ​​that the third drive component (4) drives the blocking component (3) to move according to the switching drive information.

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