Human body movement recognition equipment with single inductive probe

Abstract

The utility model belongs to the field of detection, and particularly relates to a human body movement identification device with a single inductive probe, which comprises a shell, a detection window, a first sensing probe, a second sensing probe and a third sensing probe, and is characterized in that a mounting cavity is arranged in the shell, and the shell is also provided with a detection window penetrating to the mounting cavity; the infrared induction probe is arranged in the mounting cavity, and the infrared induction probe corresponds to the detection window; the control module is arranged in the mounting cavity, and the infrared induction probe is electrically connected with the control module; and the lens assembly is arranged at the detection window, and a one-dimensional Fresnel array area corresponding to the infrared induction probe is arranged on the lens assembly. According to the utility model, when the device is used, human body images cannot be directly collected, the dispute of privacy disclosure is avoided, and the multi-scene compatibility of the infrared induction probe is better; besides, based on the device, human body movement recognition can be completed only through one infrared induction probe, the hardware cost of the device is lower, and ultra-low power consumption can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of detection, and specifically relates to a human motion recognition device with a single sensor probe. Background Technology

[0002] With the rapid development of intelligent sensing technology, the demand for human motion recognition in fields such as intelligent security, health monitoring, and human-computer interaction is increasing. Currently, human motion recognition is mainly based on visual recognition technology. Traditional monitoring systems rely on cameras and image processing algorithms (such as optical flow and background modeling) to detect human movement. However, this technology has significant drawbacks: 1. Cameras directly capture user images, which can easily lead to privacy disputes; 2. Insufficient lighting, obstructions, and complex backgrounds significantly reduce recognition accuracy. Utility Model Content

[0003] To address the aforementioned issues, the primary objective of this invention is to provide a human motion recognition device with a single sensor probe, which offers better privacy protection and compatibility across multiple scenarios during use.

[0004] Another objective of this invention is to provide a human motion recognition device with a single sensor probe, which has lower hardware costs and can achieve ultra-low power consumption.

[0005] To solve the above problems, the technical solution of this utility model is as follows.

[0006] A human motion recognition device with a single sensor probe, characterized in that it comprises:

[0007] The housing has an internal mounting cavity and a detection window extending through the mounting cavity.

[0008] An infrared sensor is disposed within the mounting cavity and corresponds to the detection window;

[0009] A control module for controlling an infrared sensor probe is disposed in a mounting cavity, and the infrared sensor probe is electrically connected to the control module.

[0010] A lens assembly is disposed at the detection window, and the lens assembly has a one-dimensional Fresnel array area corresponding to the infrared sensing probe.

[0011] In this invention, when a human body moves from left to right in a one-dimensional Fresnel array region, the infrared sensor detects the wavelength signal emitted by the human body and outputs a sine signal; when the human body moves from right to left in a one-dimensional Fresnel array region, a cosine signal with a 90-degree phase difference will be output; and the control module can identify the direction of human movement by detecting the phase.

[0012] This device does not directly collect human images during use, thus avoiding privacy disputes, and the infrared sensor has better compatibility across multiple scenarios. Furthermore, based on this device, only one infrared sensor is needed to complete human movement recognition, which not only reduces the hardware cost of the device but also enables ultra-low power consumption.

[0013] Furthermore, the lens assembly includes a Fresnel lens and a light-shielding plate. The Fresnel lens is disposed at the detection window, and the light-shielding plate is provided with a clearance hole. The light-shielding plate is attached to the Fresnel lens, and the one-dimensional Fresnel array region is formed at the position corresponding to the clearance hole on the Fresnel lens.

[0014] Furthermore, the housing is also provided with a light-transmitting window that extends into the mounting cavity. The device also includes an indicator light, which is disposed in the mounting cavity and electrically connected to the control module. The indicator light corresponds to the light-transmitting window.

[0015] Furthermore, the device also includes a lampshade, which is disposed on the light-transmitting window and corresponds to the indicator light.

[0016] Furthermore, the device also includes a power supply assembly disposed on the housing and extending into the mounting cavity for electrical connection with the control module.

[0017] Furthermore, the power assembly includes a battery compartment and a battery cover. The lower side of the battery compartment is provided with a battery mounting slot for installing a battery. The battery compartment is disposed on the housing. The battery mounting slot on the lower side of the battery compartment is exposed outside the housing. The battery cover is detachably disposed at the battery mounting slot to cover the battery mounting slot. The upper end of the battery compartment extends into the mounting cavity. The control module is electrically connected to the battery in the battery mounting slot through the battery compartment.

[0018] Furthermore, the control module includes a circuit board, and the upper end of the battery compartment is provided with at least two snap-fit ​​protrusions, each with a snap-fit ​​groove. The two sides of the lower end of the circuit board are respectively snapped into the snap-fit ​​grooves on the at least two snap-fit ​​protrusions.

[0019] Furthermore, the device also includes a base assembly, on which the housing is rotatably mounted.

[0020] Furthermore, the base assembly includes a base and a connecting arm, the lower end of the connecting arm being rotatably mounted on the base, and the housing being rotatably mounted on one side of the upper end of the connecting arm.

[0021] Furthermore, the connecting arm includes a connecting body, a first arm, and a second arm. The lower ends of the first arm and the second arm are respectively fixed to both sides of the connecting body. The connecting body is rotatably connected to the base. The two sides of the housing are rotatably connected to one side of the upper end of the first arm and one side of the upper end of the second arm, respectively.

[0022] The beneficial effects of this invention are as follows: When a human body moves from left to right in the one-dimensional Fresnel array area, the infrared sensor detects the wavelength signal emitted by the human body and outputs a sine signal; when the human body moves from right to left in the one-dimensional Fresnel array area, a cosine signal with a 90-degree phase difference is output; the control module can identify the direction of human movement by detecting the phase; this device does not directly collect human images during use, avoiding privacy disputes, and the infrared sensor has better multi-scenario compatibility; furthermore, based on this device, only one infrared sensor is needed to complete human movement recognition, which not only reduces the hardware cost of the device but also achieves ultra-low power consumption. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is an exploded view of this utility model.

[0025] Figure 3 This is an exploded view of the power supply components.

[0026] Figure 4 This is an exploded view of an infrared sensor probe.

[0027] Icon labels:

[0028] 1. Housing; 11. Mounting cavity; 12. Inspection window; 13. Light transmission window;

[0029] 2. Infrared sensor; 21. Filter; 22. Sensing unit; 23. Amplifier; 24. Tube socket;

[0030] 3. Control module; 31. Circuit board;

[0031] 4. Lens assembly; 41. Fresnel lens; 42. Light shield; 43. Clearance hole;

[0032] 5. Indicator light;

[0033] 6. Lampshade;

[0034] 7. Power supply assembly; 71. Battery compartment; 72. Battery cover; 73. Battery mounting slot; 74. Snap-fit ​​protrusion; 75. Snap-fit ​​groove;

[0035] 8. Base assembly; 81. Base; 82. Connecting arm; 821. Connector; 822. First arm; 823. Second arm. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0037] See Figure 1-4 This embodiment provides a human motion recognition device with a single sensor probe, including:

[0038] The housing 1 has an installation cavity 11 inside and a detection window 12 extending through the installation cavity 11 on the housing 1.

[0039] An infrared sensor 2 is disposed inside the mounting cavity 11 and corresponds to the detection window 12.

[0040] The control module 3 is used to control the infrared sensor 2. The control module 3 is disposed in the mounting cavity 11, and the infrared sensor 2 is electrically connected to the control module 3.

[0041] Lens assembly 4 is located at the detection window 12, and a one-dimensional Fresnel array area corresponding to the infrared sensing probe 2 is provided on the lens assembly 4.

[0042] In this embodiment, the lens assembly 4 includes a Fresnel convex lens 41 and a light shield 42. The Fresnel convex lens 41 is disposed at the detection window 12, and the light shield 42 is provided with a clearance hole 43. The light shield 42 is attached to the Fresnel convex lens 41, and a one-dimensional Fresnel array region is formed at the position corresponding to the Fresnel convex lens 41 and the clearance hole 43.

[0043] In this embodiment, the housing 1 is also provided with a light-transmitting window 13 that extends through the mounting cavity 11. The device also includes an indicator light 5, which is disposed in the mounting cavity 11 and electrically connected to the control module 3. The indicator light 5 corresponds to the light-transmitting window 13.

[0044] In this embodiment, the device also includes a lampshade 6, which is disposed on the light-transmitting window 13 and corresponds to the indicator light 5.

[0045] In this embodiment, the device further includes a power supply component 7, which is disposed on the housing 1 and extends into the mounting cavity 11 for electrical connection with the control module 3.

[0046] In this embodiment, the power supply assembly 7 includes a battery compartment 71 and a battery cover 72. The battery compartment 71 has a battery mounting slot 73 for installing a battery on its lower side. The battery compartment 71 is mounted on the housing 1, and the battery mounting slot 73 on its lower side is exposed outside the housing 1. The battery cover 72 is detachably mounted on the battery mounting slot 73 to cover it. The upper end of the battery compartment 71 extends into the mounting cavity 11. The control module 3 is electrically connected to the battery in the battery mounting slot 73 through the battery compartment 71. It should be noted that the power supply assembly 7 can also be implemented in other ways, such as a switching power supply module that can be directly connected to external AC power to convert AC power into low-voltage DC power.

[0047] In this embodiment, the control module 3 includes a circuit board 31. The upper end of the battery compartment 71 is provided with at least two snap-fit ​​protrusions 74, each with a snap-fit ​​groove 75. The lower ends of the circuit board 31 are respectively snapped into the snap-fit ​​grooves 75 on the at least two snap-fit ​​protrusions 74. Specifically, the specific circuit design and control program on the circuit board 31 are conventional technologies and not improvements of this application; therefore, they will not be described in detail here.

[0048] In this embodiment, the device further includes a base assembly 8, and the housing 1 is rotatably mounted on the base assembly 8. The rotatable connection between the housing 1 and the base assembly 8 allows the device to be adjusted in angle as needed, making it more convenient to use.

[0049] In this embodiment, the base assembly 8 includes a base 81 and a connecting arm 82. The lower end of the connecting arm 82 is rotatably mounted on the base 81, and the housing 1 is rotatably mounted on one side of the upper end of the connecting arm 82. The connecting arm 82 can be adjusted to a first angle on the base 81, while the housing 1 can be adjusted to a second angle on the connecting arm 82. This multi-angle adjustment structure makes the device more convenient to use.

[0050] In this embodiment, the connecting arm 82 includes a connecting body 821, a first arm 822, and a second arm 823. The lower ends of the first arm 822 and the second arm 823 are respectively fixed to the two sides of the connecting body 821. The connecting body 821 is rotatably connected to the base 81. The two sides of the housing 1 are rotatably connected to one side of the upper end of the first arm 822 and one side of the upper end of the second arm 823, respectively.

[0051] In this embodiment, the infrared sensor 2 consists of four parts:

[0052] Filter 21: Filters out infrared rays of other wavelengths emitted by non-human bodies;

[0053] Sensing unit 22: When certain crystals (such as lithium tantalate, triglycine sulfate, etc.) are exposed to infrared radiation and their temperature rises, their surface charge will decrease, which is equivalent to releasing a portion of the charge. This phenomenon is called the pyroelectric effect.

[0054] Amplifier 23: The sensor amplifies the released charge signal through a MOS transistor and converts it into a voltage output, thereby realizing the detection of infrared radiation;

[0055] Tube socket 24: The filter 21, sensing unit 22 and amplifier 23 are combined and packaged into a sensor.

[0056] It is known that the tube socket 24 can be electrically connected to the circuit board 31 through the tube pin.

[0057] The infrared sensor 2 is sensitive to changes in infrared light in the range of 7.0–14 μm, while the Fresnel lens's focusing effect enables it to detect changes in infrared light over a wider range.

[0058] The principle of human movement recognition in this application is as follows: the infrared sensor 2 and the Fresnel lens convert the light signal into an electrical signal, and the amplifier 23 amplifies the analog signal and provides it to the control module 3 for detection. After analyzing the analog waveform, the control module 3 can distinguish the direction of human movement.

[0059] It should be emphasized that the key point of this application lies in the one-dimensional Fresnel array region. When the human body moves from left to right in the one-dimensional Fresnel array region, the sensing unit 22 detects the wavelength signal emitted by the human body's infrared radiation. After being amplified by the amplifier 23, a sine signal will be output. When the human body moves from right to left in the one-dimensional Fresnel array region, the sensing unit 22 detects the wavelength signal emitted by the human body's infrared radiation. After being amplified by the amplifier 23, a cosine signal with a 90-degree phase difference will be output.

[0060] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A human motion recognition device with a single sensor probe, characterized in that, include: The housing has an internal mounting cavity and a detection window extending through the mounting cavity. An infrared sensor is disposed within the mounting cavity and corresponds to the detection window; A control module for controlling an infrared sensor probe is disposed in a mounting cavity, and the infrared sensor probe is electrically connected to the control module. A lens assembly is disposed at the detection window, and the lens assembly has a one-dimensional Fresnel array area corresponding to the infrared sensing probe.

2. The human motion recognition device with a single sensor probe according to claim 1, characterized in that, The lens assembly includes a Fresnel lens and a light shield. The Fresnel lens is disposed at the detection window. The light shield has a clearance hole and is attached to the Fresnel lens. The one-dimensional Fresnel array region is formed at the position of the Fresnel lens corresponding to the clearance hole.

3. The human motion recognition device with a single sensor probe according to claim 1, characterized in that, The housing is also provided with a light-transmitting window that extends into the mounting cavity. The device also includes an indicator light, which is located inside the mounting cavity and electrically connected to the control module. The indicator light corresponds to the light-transmitting window.

4. A human motion recognition device with a single sensor probe according to claim 3, characterized in that, The device also includes a lampshade, which is disposed on the light-transmitting window and corresponds to the indicator light.

5. A human motion recognition device with a single sensor probe according to claim 1, characterized in that, The device also includes a power supply assembly disposed on the housing and extending into the mounting cavity for electrical connection with the control module.

6. A human motion recognition device with a single sensor probe according to claim 5, characterized in that, The power assembly includes a battery compartment and a battery cover. The lower side of the battery compartment is provided with a battery mounting slot for installing a battery. The battery compartment is disposed on the housing. The battery mounting slot on the lower side of the battery compartment is exposed outside the housing. The battery cover is detachably disposed at the battery mounting slot to cover the battery mounting slot. The upper end of the battery compartment extends into the mounting cavity. The control module is electrically connected to the battery in the battery mounting slot through the battery compartment.

7. A human motion recognition device with a single sensor probe according to claim 6, characterized in that, The control module includes a circuit board, and the upper end of the battery compartment is provided with at least two snap-fit ​​protrusions, each with a snap-fit ​​groove. The two sides of the lower end of the circuit board are respectively snapped into the snap-fit ​​grooves on the at least two snap-fit ​​protrusions.

8. A human motion recognition device with a single sensor probe according to any one of claims 1-7, characterized in that, The device also includes a base assembly, on which the housing is rotatably mounted.

9. A human motion recognition device with a single sensor probe according to claim 8, characterized in that, The base assembly includes a base and a connecting arm. The lower end of the connecting arm is rotatably mounted on the base, and the housing is rotatably mounted on one side of the upper end of the connecting arm.

10. A human motion recognition device with a single sensor probe according to claim 9, characterized in that, The connecting arm includes a connecting body, a first arm, and a second arm. The lower ends of the first arm and the second arm are respectively fixed to both sides of the connecting body. The connecting body is rotatably connected to the base. The two sides of the housing are rotatably connected to one side of the upper end of the first arm and one side of the upper end of the second arm, respectively.

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