Intelligent human body dual-identification sensor
Through the intelligent dual-recognition sensor combined with infrared detector and microwave sensor, the problem that the sensor cannot accurately detect human signals is solved, and accurate human detection is achieved in complex environments, improving the intelligent analysis capabilities of the equipment.
Patent Information
- Application Number
- CN202421765531.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-07-24
AI Technical Summary
Existing sensors cannot accurately distinguish between human signals from the environment or the influence of small animals when detecting human signals, resulting in waste of energy.
The intelligent human body dual-recognition sensor, which combines infrared detectors and microwave sensors, uses the logic processor to perform signal processing, uses infrared detectors to detect temperature and microwave sensors to identify object movement, and combines the advantages of both to achieve accurate detection.
It improves the accuracy of human body detection, avoids interference from the environment and other objects, and enhances the intelligent analysis capabilities of the equipment.
Smart Images
Figure CN223205682U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of sensor technology, and in particular to an intelligent human dual-detection sensor. Background Art
[0002] A sensor (English name: transducer / sensor) is a detection device that can sense the information being measured and convert the sensed information into electrical signals or other required forms of information output according to certain rules to meet the requirements of information transmission, processing, storage, display, recording and control.
[0003] Many devices now include sensors specifically designed to detect human presence. For example, some smart lighting systems require these sensors to detect human presence, adjusting brightness based on human presence and saving energy. However, existing sensors, consisting of a single detection system, cannot accurately detect human presence. This often leads to lighting being affected by the environment and small animals, resulting in unnecessary energy consumption. Utility Model Content
[0004] In order to improve the structure of sensors in the prior art so that sensors in some devices that need to detect human body signals can accurately detect human body signals and avoid interference from other things, the present application provides an intelligent human body dual-detection sensor.
[0005] The intelligent dual-detection human body sensor provided in this application adopts the following technical solution:
[0006] An intelligent human dual-detection sensor includes a shell with a threaded connection on one side and a signal antenna arranged on the shell. The shell is provided with a power cord on the side where the signal antenna is provided. An installation cavity is opened inside the shell, and an infrared detector and a microwave sensor are installed in the installation cavity. A logic processor is provided inside the installation cavity, and the logic processor is electrically connected to the infrared detector and the microwave sensor. A first switch and a second switch are respectively provided on one side of the logic processor for controlling the start and stop of the infrared detector and the microwave sensor and are arranged side by side. The signal antenna is electrically connected to a pushing device, and the pushing device is in contact with the side of the logic processor where the first switch and the second switch are installed.
[0007] By adopting the above technical solution, infrared detectors can detect human body temperature and can work in dark conditions, but the detection distance is short and is easily affected by environmental interference. Microwave sensors can identify the movement of objects and judge the distance and are not affected by obstacles, but their disadvantage is that they cannot accurately identify. The combination of the two can achieve accurate human body detection within a certain range, avoid interference from the environment and the movement of other objects, improve detection accuracy, and adjust the equipment according to distance, so that the equipment has more powerful intelligent analysis capabilities.
[0008] Optionally, a strip groove is provided on one side of the logic processor, and the first switch and the second switch have the same structure and are arranged side by side in the strip groove. The first switch includes a first positive electrode block installed in the strip groove, a first spring whose two ends are fixedly connected to the first positive electrode block and the bottom of the strip groove respectively, and a first negative electrode column fixedly provided at the bottom of the strip groove. When the first spring is in a normal state, the top of the first positive electrode block is flush with the notch of the strip groove and there is a gap between the bottom of the first positive electrode block and the first negative electrode column.
[0009] By adopting the above technical solution, when the pushing device receives a signal, it first drives the second switch. At this time, the microwave sensor is activated and detects the movement of the object. When the object moves closer to the sensor, the pushing device further drives the first switch to move. At this time, the first positive electrode block abuts the first negative electrode column, forming a current path, driving the infrared detector to start and detect the human body. At this time, the logic processor receives dual signals to achieve accurate detection of the human body.
[0010] Optionally, the pushing device includes a micro cylinder electrically connected to the signal antenna and a push-pull block connected to the telescopic rod of the micro cylinder. A pushing block is integrally provided on one side of the push-pull block parallel to the axis of the micro cylinder, and the pushing block slides in the strip groove.
[0011] By adopting the above technical solution, when the signal antenna receives the signal, it pushes the push-pull block to slide inside the strip groove along the length direction of the strip groove. At this time, the pushing block applies pressure to the second switch and the first switch in turn, so that the infrared detector and the microwave sensor camera are powered on and start working. The operation is simple and can be wirelessly controlled.
[0012] Optionally, the side of the first switch close to the pushing block and the side of the pushing block close to the first switch are both inclined structures with a right-angled trapezoidal cross-section, and the length of the plane on the pushing block close to the first switch along the sliding direction of the pushing block is greater than the length between the first switch and the second switch.
[0013] By adopting the above technical solution, the contact between the first switch and the second switch and the pushing block is made smoother, thereby preventing the first positive electrode block and the second positive electrode block from moving unstably when the first switch and the second switch are turned on and off. At the same time, the structural stability of the pushing block, the first positive electrode block and the second positive electrode block is also protected, thereby preventing the three parts from being damaged due to repeated friction.
[0014] Optionally, the infrared detector includes a Fresnel lens fixedly mounted on the upper end surface of the shell and a signal conversion element connected to the Fresnel lens, a light beam path is connected between the Fresnel lens and the signal conversion element, and a plurality of concave lenses are installed inside the light beam path.
[0015] By adopting the above technical solution, a Fresnel lens is used to absorb infrared radiation emitted by an object. The radiated light is then converted into an electrical signal after passing through a light beam path and a signal conversion element, and finally transmitted to a logic processor. The purpose of placing a concave lens in the light beam path is to enable the infrared radiation beam to form a parallel beam within the light beam path, so that the signal conversion element can better receive the infrared radiation and detect slight changes in the infrared radiation.
[0016] Optionally, the microwave sensor includes a signal conversion module fixedly disposed inside the shell and electrically connected to the logic processor, a microwave vibrator and a signal receiver mounted on the shell, the shell having an annular groove circumferentially around the Fresnel lens, the microwave vibrator being mounted in the annular groove, and the microwave vibrator and the Fresnel lens being coaxial.
[0017] By adopting the above technical solution, the volume of the dual-detection sensor can be reduced while making the sensor structure more compact, making the sensor more targeted when performing human body detection, and improving the sensor's accuracy in detecting targets and anti-interference capabilities.
[0018] Optionally, the cross section of the annular groove is a conical structure, and the light beam path is coaxial with the annular groove and passes through the middle of the annular groove.
[0019] By adopting the above technical solution, the detection range of the microwave sensor is improved, so that the sensor can still achieve accurate detection when the human body moves faster, thereby improving the practicality of the dual-detection sensor.
[0020] Optionally, a shock-absorbing washer is provided in the middle of the microwave vibrator, and the shock-absorbing washer is sleeved on the light beam path.
[0021] By adopting the above technical solution, it is possible to prevent the light beam path from shaking when the microwave sensor is working, thereby affecting the propagation trajectory of the internal infrared radiation, causing the electrical signal transmitted by the infrared detector to deviate from the actual value, resulting in erroneous detection results.
[0022] In summary, this application includes at least one of the following beneficial technical effects:
[0023] 1. This application overcomes the drawbacks of using a single detection technology by integrating an infrared detector and a microwave sensor into the same sensor. The two detection technologies are combined and logically processed to more accurately detect human bodies and avoid interference.
[0024] 2. This application controls the sensor through radio signals and combines the Internet of Things communication technology to realize the detection of the human body, making it convenient for staff to wirelessly control the sensor, improving the operational smoothness of the sensor, and making the dual-detection sensor have better use value. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is an overall view of an intelligent human dual-detection sensor of the present application.
[0026] Figure 2 yes Figure 1 Cross-sectional view at AA in the middle.
[0027] Figure 3 yes Figure 2 Magnified view of point A in the middle.
[0028] Figure 4 This is a logical processor structure diagram of an intelligent human dual-detection sensor in this application.
[0029] Figure 5 yes Figure 4 Cross-sectional view at center BB.
[0030] Explanation of the accompanying drawings: 1. Shell; 11. Mounting cavity; 12. Signal antenna; 13. Power cord; 14. Ring groove; 141. Shock-absorbing gasket; 2. Logic processor; 21. Strip groove; 3. Infrared detector; 31. Fresnel lens; 32. Signal conversion element; 33. Light beam path; 331. Concave lens; 4. Microwave sensor; 41. Signal conversion module; 42. Microwave vibrator; 43. Signal receiver; 5. First switch; 51. First positive electrode block; 52. First negative electrode column; 53. First spring; 6. Second switch; 61. Second positive electrode block; 62. Second negative electrode column; 63. Second spring; 7. Pushing device; 71. Micro cylinder; 72. Push-pull block; 73. Pushing block. DETAILED DESCRIPTION
[0031] The following is combined with Figure 1-5This application is described in further detail.
[0032] The embodiment of the present application discloses an intelligent human dual-detection sensor.
[0033] Reference Figure 1 and Figure 2 An intelligent dual-detection human body sensor includes a housing 1 with a cavity defined within and an end cap threaded onto one side, and a signal antenna 12 fixedly extending through one side of the housing 1. A power cord 13 is connected to the side of the housing 1 where the signal antenna 12 is mounted, providing power to the various components within the sensor. A logic processor 2, an infrared detector 3, and a microwave sensor 4 are mounted within the mounting cavity 11. The logic processor 2 is electrically connected to the infrared detector 3 and the microwave sensor 4, respectively.
[0034] Reference Figure 2 and Figure 3 Specifically, infrared detector 3 includes a Fresnel lens 31 fixedly mounted on the upper end surface of housing 1 and a signal conversion element 32 connected to the Fresnel lens. A beam path 33 is connected between signal conversion element 32 and the Fresnel lens. Infrared radiation emitted by an external object passes through Fresnel lens 31 and enters beam path 33. Infrared radiation is then converted into an electrical signal by signal conversion element 32 and transmitted to logic processor 2 to detect the object.
[0035] Reference Figure 2 and Figure 3 Furthermore, a number of concave lenses 331 are evenly installed inside the beam path 33 to disperse the infrared radiation inside the beam path 33, making it easier for the signal conversion element 32 to capture and accurately identify signals, thereby improving the accuracy of the dual-detection sensor in identifying the human body.
[0036] Preferably, there are two concave lenses 331 , which are located inside the light beam channel, close to the Fresnel lens 31 and the signal conversion element 32 , respectively, to achieve the best astigmatism effect.
[0037] Reference Figure 2 and Figure 3 The microwave sensor includes a signal conversion module 41 fixedly mounted within the housing 1, and a microwave vibrator and signal receiver 43 mounted within the mounting cavity 11. Specifically, an annular groove 14 is defined in the housing 1 along the circumference of the Fresnel lens 31. The microwave vibrator is mounted within the groove 14, coaxially with the Fresnel lens. This reduces the size of the housing 1 and enhances the cost-effectiveness of the dual-detection sensor.
[0038] Preferably, a shock-absorbing washer 141 is installed in the middle of the microwave vibrator, and the shock-absorbing washer 141 is sleeved on the beam path 33 to prevent the beam path 33 from shaking when the microwave sensor 4 is working, causing the infrared radiation inside it to shift and causing detection failure.
[0039] Reference Figure 2 and Figure 4 A first switch 5 and a second switch 6 for controlling the infrared detector 3 and the microwave sensor 4 are provided on the same side of the logic processor 2. The side of the signal antenna 12 extending into the installation cavity 11 is connected to a pushing device 7 for controlling the first switch 5 and the second switch 6 to be turned on or off. The pushing device 7 is abutted against the side of the logic processor 2 on which the first switch 5 and the second switch 6 are installed.
[0040] Reference Figure 4 and Figure 5 Furthermore, a strip groove 21 is provided on one side of the logic processor 2, and a first switch 5 and a second switch 6 are arranged side by side inside the strip groove 21 along the length direction of the strip groove 21. The first switch 5 includes a first positive electrode block 51 movably disposed inside the strip groove 21, a first negative electrode post 52 fixedly disposed at the bottom of the strip groove 21, and a first spring 53 whose ends are fixedly connected to the bottom of the strip groove 21 and the side of the first positive electrode block 51 near the strip groove 21. When the first spring 53 is in a normal state, there is a gap between the first positive electrode block 51 and the first negative electrode post 52, and the infrared detector 3 is in a power-off state. At the same time, the side of the first positive electrode block 51 away from the bottom of the strip groove 21 is flush with the notch of the strip groove 21, so that the pushing device 7 can smoothly abut against the first positive electrode block 51.
[0041] It should be noted that the first switch 5 and the second switch 6 in this application have the same structure, and the second switch 6 includes a second positive electrode block 61, a second negative electrode column 62 and a second spring 63. Because of the same structure, the second switch 6 will not be described in detail.
[0042] Reference Figure 4 and Figure 5 The pushing device 7 includes a micro cylinder 71 electrically connected to the signal antenna 12, and a push-pull block 72 connected to the telescopic rod of the micro cylinder 71. The push-pull block 72 is integrally connected to the side of the strip groove 21 close to the push-pull block 72, and the push block 73 slides inside the strip groove 21. When the signal antenna 12 receives a wireless signal, the micro cylinder 71 drives the pushing block 73 to slide back and forth along the length direction of the strip groove 21. At this time, the pushing block 73 abuts against the first positive electrode block 51 and the second positive electrode block 61, so that the first positive electrode block 51 and the second positive electrode block 61 abut against the first negative electrode column 52 and the second negative electrode column 62 respectively, thereby starting the infrared detector 3 and the microwave sensor 4.
[0043] Reference Figure 5 Furthermore, the sides of the first positive electrode block 51, the second positive electrode block 61 and the pushing block 73 that are close to each other are all inclined structures with a right-angled trapezoidal cross-section, so that when the pushing block 73 abuts against the first positive electrode block 51 and the second positive electrode block 61, the two can be moved more conveniently, and at the same time, it can also avoid multiple relative sliding that may cause damage to the first positive electrode block 51, the second positive electrode block 61 and the pushing block 73.
[0044] Reference Figure 5 Furthermore, the length of the plane of the pushing block 73 close to the first switch 5 along the length direction of the strip groove 21 is greater than the maximum distance between the first positive electrode block 51 and the second positive electrode block 61, so that the pushing block 73 can press the first positive electrode block 51 and the second positive electrode block 61 at the same time, thereby making the infrared detector 3 and the microwave sensor 4 work at the same time, thereby improving the human body detection accuracy of the dual-detection sensor.
[0045] The implementation principle of an intelligent dual-detection human body sensor in the embodiment of the present application is as follows:
[0046] The operator activates micro-cylinder 71 via wireless signals. The telescopic rod of micro-cylinder 71 then pushes push-pull block 72 and push-pull block 73, which are integrally connected to push-pull block 72, to sequentially press second positive electrode block 61 and first positive electrode block 51, activating microwave sensor 4 and infrared detector 3. When microwave sensor 4 detects a moving object, infrared detector 3 further analyzes the object and identifies it as a human, achieving precise human sensing.
[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. An intelligent human dual-detection sensor, comprising a housing (1) with a threaded connection on one side and a signal antenna (12) disposed on the housing (1), wherein the housing (1) is provided with a power line (13) on the side where the signal antenna (12) is disposed, and an installation cavity (11) is provided inside the housing (1), wherein an infrared detector (3) and a microwave sensor (4) are installed in the installation cavity (11), characterized in that: A logic processor (2) is provided inside the installation cavity (11), and the logic processor (2) is electrically connected to the infrared detector (3) and the microwave sensor (4). A first switch (5) and a second switch (6) are provided on one side of the logic processor (2) for controlling the start and stop of the infrared detector (3) and the microwave sensor (4), respectively. The signal antenna (12) is electrically connected to a pushing device (7), and the pushing device (7) is in contact with a side of the logic processor (2) on which the first switch (5) and the second switch (6) are installed.
2. The intelligent dual-detection human body sensor according to claim 1, characterized in that: A strip groove (21) is provided on one side of the logic processor (2); the first switch (5) and the second switch (6) have the same structure and are arranged side by side in the strip groove (21); the first switch (5) comprises a first positive electrode block (51) installed in the strip groove (21), a first spring (53) whose two ends are respectively fixedly connected to the first positive electrode block (51) and the bottom of the strip groove (21); and a first negative electrode column (52) fixedly arranged at the bottom of the strip groove (21); when the first spring (53) is in a normal state, the top of the first positive electrode block (51) is flush with the notch of the strip groove (21), and there is a gap between the bottom of the first positive electrode block (51) and the first negative electrode column (52).
3. The intelligent dual-detection human body sensor according to claim 2, characterized in that: The pushing device (7) comprises a micro cylinder (71) electrically connected to the signal antenna (12) and a push-pull block (72) connected to the telescopic rod of the micro cylinder (71); a pushing block (73) is integrally provided on one side of the push-pull block (72) parallel to the axis of the micro cylinder (71); and the pushing block (73) is slidably fitted in the strip groove (21).
4. The intelligent dual-detection human body sensor according to claim 3, characterized in that: The side of the first switch (5) close to the pushing block (73) and the side of the pushing block (73) close to the first switch (5) are both inclined structures with a right-angled trapezoidal cross section, and the length of the plane of the pushing block (73) close to the first switch (5) along the sliding direction of the pushing block (73) is greater than the length between the first switch (5) and the second switch (6).
5. The intelligent dual-detection human body sensor according to claim 1, characterized in that: The infrared detector (3) comprises a Fresnel lens (31) fixedly mounted on the upper end surface of the housing (1) and a signal conversion element (32) connected to the Fresnel lens (31); a light beam path (33) is connected between the Fresnel lens (31) and the signal conversion element (32); and a plurality of concave lenses (331) are installed inside the light beam path (33).
6. The intelligent dual-detection human body sensor according to claim 5, characterized in that: The microwave sensor (4) comprises a signal conversion module (41) fixedly arranged inside the housing (1) and electrically connected to the logic processor (2), a microwave vibrator (42) and a signal receiver (43) mounted on the housing (1); the housing (1) is provided with an annular groove (14) in the circumferential direction of the Fresnel lens (31); the microwave vibrator (42) is mounted in the annular groove (14), and the microwave vibrator (42) and the Fresnel lens (31) are coaxial.
7. The intelligent dual-detection human body sensor according to claim 6, characterized in that: The cross section of the annular groove (14) is a tapered structure, and the light beam passage (33) is coaxial with the annular groove (14) and passes through the middle of the annular groove (14).
8. The intelligent dual-detection human body sensor according to claim 7, characterized in that: A shock-absorbing washer (141) is provided in the middle of the microwave vibrator (42), and the shock-absorbing washer (141) is sleeved on the light beam passage (33).