Induction device for judging entrance and exit of door through combination of human body and electromagnetism

Abstract

The utility model discloses an induction device for judging entering and exiting of a door by combining a human body with electromagnetism, which comprises a door magnet and an induction host magnetically attracted with the door magnet, and a circuit board is mounted in the induction host; the door sensor is small in size, easy to install and convenient to connect, the sensing body facilitates dismounting of the bottom plate for internal maintenance, the magnetic induction module is matched with the door sensor through the magnetic induction area, the human body sensing module controlled by the central processing unit can judge whether a human body goes in or out to go home or leave home, and therefore the door sensor and human body sensing are combined, and the door sensor is convenient to use. And the incoming or outgoing information is uploaded to the smart home gateway for preset operation of going home or leaving home, so that the use intelligence and convenience are improved.

Description

Technical Field

[0001] This utility model relates to the field of sensing device technology, and in particular to a sensing device that uses electromagnetic fields to determine whether a person is entering or leaving a door. Background Technology

[0002] There are many types of door and window sensors on the market, mainly used to detect the open / closed status of doors and windows. For example, the Mijia door and window sensor model MCCGQ02HL can notify you when doors and windows are opened or closed, remind you when they are left open for an extended period, and has smart device linkage functions. However, it is inconvenient to maintain the internal components of the sensor and lacks the function of combining with human body sensing to determine whether someone is entering or leaving the house. Summary of the Invention

[0003] The purpose of this invention is to provide a sensing device that uses electromagnetic induction to determine whether a person is entering or leaving a room, in order to solve the problems mentioned in the background art.

[0004] This utility model provides the following technical solution: a sensing device for judging entry and exit of a door by combining human body with electromagnetic field, including a door magnet and a sensing host that magnetically attracts the door magnet, wherein a circuit board is installed inside the sensing host, characterized in that: the door magnet body includes a shell and a base plate with adhesive backing on the outer side, the base plate is hooked onto the shell by setting hooks, and the four corners inside the shell are respectively provided with inserts, and the circuit board is inserted into the inserts.

[0005] The circuit board is equipped with a central processing unit, a magnetic induction module, a human body induction module, a switch button, an indicator light, a power module, and a wireless transmission module that is connected to the gateway. A battery cavity is provided inside the housing, and the battery is installed in the battery cavity. A button hole corresponding to the switch button and a power socket electrically connected to the power module are provided on one side of the housing. A magnetic induction area that is magnetically attracted to the door magnet is provided on the inner side of the door magnet body. The magnetic induction area is positioned relative to the magnetic induction module. A human body induction probe cover corresponding to the human body induction module and an indicator light hole corresponding to the indicator light are provided on the bottom surface of the housing.

[0006] The central processing unit (CPU) has VCC, GND, P0, P1, P2, P3, P4, and P5 terminals. The power module has VCC and GND terminals. The CPU's VCC and GND terminals are electrically connected to the power module's VCC and GND terminals, respectively. The power module is electrically connected to a power port for charging. The power module is also electrically connected to a battery for charging. The CPU's P0 terminal is electrically connected to an indicator light. The CPU's P5 terminal is electrically connected to a magnetic induction module. The CPU's P1 terminal is electrically connected to a switch button. The CPU's P2 and P3 terminals are electrically connected to a wireless communication module. The CPU's P4 terminal is electrically connected to a human body induction module.

[0007] Preferably, the outer shell has a shell opening, and the shell opening is provided with a hook block with a hook hole, and the hook is hooked into the hook block.

[0008] Preferably, the indicator light, the switch button, and the magnetic induction module are each connected to the VCC terminal.

[0009] Preferably, both the wireless communication module and the human body sensing module are provided with a VCC terminal and a GND terminal, and the VCC terminal and the GND terminal are respectively connected to the VCC terminal and the GND terminal.

[0010] Preferably, the magnetic induction module is a mini magnetic reed sensor module.

[0011] Preferably, the human body sensing module is a human body infrared sensing module, or a human body microwave sensing module, or a millimeter-wave radar module.

[0012] Preferably, the wireless transmission module is a Bluetooth module, a WIFI module, or a short-range StarScan module.

[0013] Preferably, the door magnet is covered with adhesive backing.

[0014] The advantages of this utility model are: This application is small in size, simple to install, and easy to connect. The sensing body can be easily maintained internally by disassembling and assembling the base plate. The magnetic induction module works with the door magnet through the magnetic induction area. The human body sensing module controlled by the central processor can realize the determination of whether a person is coming home or leaving home by the presence of a human body. Thus, the door magnet and human body sensing are combined, and the information of entering or leaving is uploaded to the smart home gateway for the preset operation of returning home or leaving home, which increases the intelligence and convenience of use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 Schematic diagram of the sensor host structure

[0017] Figure 3 This is a schematic diagram of the base plate structure;

[0018] Figure 4 This is a schematic diagram of the circuit board structure;

[0019] Figure 5 for Figure 4 Schematic diagram of electrical connection structure;

[0020] In the diagram: 1. Door magnet; 11. Adhesive backing; 2. Sensor host; 22. Housing; 23. Insert post; 24. Hook hole; 25. Hook block; 26. Button hole; 27. Charging socket; 28. Indicator light hole; 29. ​​Battery compartment; 30. Battery; 31. Magnetic induction area; 32. Human body induction probe cover; 4. Circuit board; 41. Central processing unit; 42. Magnetic induction module; 43. Human body induction module; 44. Switch button; 45. Indicator light; 46. Power module; 47. Wireless transmission module; 5. Base plate; 51. Adhesive backing; 52. Hook; 100. Door; 200. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 The technical solution provided by this utility model is: a sensing device for judging entry and exit by combining human body and electromagnetic field, including a door magnet and a sensing host that is magnetically attracted to the door magnet, wherein a circuit board is installed in the sensing host.

[0023] While the existing Mijia door and window sensor model MCCGQ02HL on the market provides notifications for door and window opening and closing, reminders for overdue closing, and smart device linkage functions, it lacks convenient internal maintenance and the ability to combine with human body sensing to determine entry or exit status. This application addresses this issue by attaching a base plate hook to the outer casing opening for easy disassembly and maintenance. Furthermore, this application uses a central processing unit to control the magnetic induction module. The magnetic induction area separates from the door magnet when the door opens, and the human body sensing module, through its probe cover, detects a person entering or exiting, thus determining whether someone has returned home or left.

[0024] The innovation of this application lies in the fact that the door magnet 1 is covered with adhesive backing 11. This adhesive is used to attach the door magnet to the door frame to cooperate with the magnetic engagement and disengagement of the sensor host.

[0025] The sensor host 2 includes a housing 21 and a base plate 5 with adhesive backing 51 on its outer side. The base plate is hooked onto the housing by a hook 52. The housing has an opening with a hook block 25 having a hook hole, and the hook engages with the hook block. This facilitates the assembly and maintenance of the sensor host and makes it easy to attach the sensor host to the corresponding position on the front of the door.

[0026] The four corners of the housing are each provided with a post 23, and the circuit board 4 is inserted into the post. The circuit board is provided with a central processing unit 41, a magnetic induction module 42, a human body induction module 43, a switch button 44, an indicator light 45, a power module 46, and a wireless transmission module 47 connected to the gateway. A battery cavity 29 is provided inside the housing, and a battery 30 is installed in the battery cavity. The battery is a rechargeable battery, which can be a lithium battery. One side of the housing has a button hole 26 corresponding to the switch button and a power socket 27 electrically connected to the power module. The power socket can be a TYPC or USB female power socket. The inner side of the door magnetic body is provided with a magnetic induction area 31 that is magnetically attracted to the door magnetic sensor. The magnetic induction area is positioned relative to the magnetic induction module. The bottom surface of the housing is provided with a human body induction probe cover 32 corresponding to the human body induction module and an indicator light 45. The indicator light is an LED indicator light, which serves to indicate whether there is power or not.

[0027] The central processing unit (CPU) has VCC, GND, P0, P1, P2, P3, P4, and P5 terminals. The power supply module has VCC and GND terminals. The CPU module model is AT89S52-24PU, and the power supply module model is AM11-5W05C [5V / 1000mA]. The CPU's VCC and GND terminals are electrically connected to the power supply module's VCC and GND terminals, respectively. The power supply module is electrically connected to a power socket and also electrically connected to a battery for charging. The battery is connected to the power supply module via wires. The power supply module is responsible for charging the battery and supplying the charged battery power to various components on the circuit board. The battery can provide power for up to six months. The CPU's P0 terminal is electrically connected to an indicator light. The CPU's P5 terminal is electrically connected to a magnetic induction module. The CPU's P1 terminal is electrically connected to a switch button. The CPU's P2 and P3 terminals are electrically connected to a wireless communication module. The CPU's P4 terminal is electrically connected to a human body induction module. The indicator light, switch button, and magnetic induction module are each connected to the VCC terminal. Both the wireless communication module and the human body sensing module have VCC and GND terminals, which are connected to the VCC and GND terminals respectively. The magnetic induction module is a mini magnetic reed sensor module, model KY-021. The human body sensing module is a human infrared sensor module, or a human microwave sensor module, or a millimeter-wave radar module; a Dentsu infrared sensor module, model HC-SR501 or SR505, can be selected. The wireless transmission module is a Bluetooth module, or a WIFI module, or a short-range satellite flash module. The Bluetooth / WIFI module model is HC-04.

[0028] The above working principle is that the power socket connects to the external power supply and charges the battery through the power module. After pressing the switch button to turn on the power, the indicator light lights up, the corresponding magnetic induction area of ​​the magnetic induction module engages with the door magnetic clutch, and the central processing unit senses the passing of a human body detected by the human body induction probe cover through the electrically connected human body induction module. It also transmits the signal of the human body outside or inside the door to the mobile phone through the wireless transmission module, so as to realize remote status viewing, receiving notifications, and linkage with other smart products.

[0029] This application is in use: such as Figure 1 As shown, the arrow points to the front direction. In this embodiment, the sensor host is attached to the upper outer edge of the front of the door using adhesive, while the door magnet is attached to the door frame at the corresponding position of the sensor host. When the magnetic induction module detects that the door is open, the door magnet and the sensor host separate, and the door opens. This triggers the human body detection probe cover of the sensor host, which then detects the human body and determines that a person has returned home, i.e., a person has entered the door from the outside.

[0030] The trigger sensor host is equipped with a human body sensor cover, which uses a human body sensing module to detect human presence and determine whether a person has left the house, i.e., when a person walks out and opens the door. This application connects to a gateway, such as a Xiaomi gateway, Huawei gateway, or other related gateways, and can also be linked with other smart devices in the home. Users can configure different actions on the gateway to determine whether someone has returned home or left.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sensing device for determining entry and exit based on human body electromagnetic induction, comprising a door magnet and a sensing host magnetically attracted to the door magnet, wherein a circuit board is installed inside the sensing host, characterized in that: The door magnet body includes an outer shell and a base plate with adhesive backing on its outer side. The base plate is hooked onto the outer shell by a hook. The four corners inside the outer shell are provided with insertion posts, and the circuit board is inserted into the insertion posts. The circuit board is equipped with a central processing unit, a magnetic induction module, a human body induction module, a switch button, an indicator light, a power module, and a wireless transmission module that is connected to the gateway. A battery cavity is provided inside the housing, and the battery is installed in the battery cavity. A button hole corresponding to the switch button and a power socket electrically connected to the power module are provided on one side of the housing. A magnetic induction area that is magnetically attracted to the door magnet is provided on the inner side of the door magnet body. The magnetic induction area is positioned relative to the magnetic induction module. A human body induction probe cover corresponding to the human body induction module and an indicator light hole corresponding to the indicator light are provided on the bottom surface of the housing. The central processing unit (CPU) has VCC, GND, P0, P1, P2, P3, P4, and P5 terminals. The power module has VCC and GND terminals. The CPU's VCC and GND terminals are electrically connected to the power module's VCC and GND terminals, respectively. The power module is electrically connected to a power port for charging. The power module is also electrically connected to a battery for charging. The CPU's P0 terminal is electrically connected to an indicator light. The CPU's P5 terminal is electrically connected to a magnetic induction module. The CPU's P1 terminal is electrically connected to a switch button. The CPU's P2 and P3 terminals are electrically connected to a wireless communication module. The CPU's P4 terminal is electrically connected to a human body induction module.

2. The sensing device for determining entry and exit based on human body electromagnetic induction according to claim 1, characterized in that, The outer shell has an opening, and the opening is provided with a hook block with a hook hole, and the hook is hooked into the hook block.

3. The sensing device for judging entry and exit based on human body electromagnetic induction according to claim 1, characterized in that, The indicator light, switch button, and magnetic induction module are each connected to the VCC terminal.

4. The sensing device for judging entry and exit based on human body electromagnetic induction according to claim 1, characterized in that, Both the wireless communication module and the human body sensing module are provided with a VCC terminal and a GND terminal, which are respectively connected to the VCC terminal and the GND terminal.

5. The sensing device for judging entry and exit based on human body electromagnetic induction according to claim 1, characterized in that, The magnetic induction module is a reed switch module, a proximity sensing module, or a ranging module.

6. The sensing device for judging entry and exit based on human body electromagnetic induction according to claim 1, characterized in that, The human body sensing module is a human body infrared sensing module, or a human body microwave sensing module, or a millimeter-wave radar module.

7. The sensing device for determining entry and exit based on human body electromagnetic induction according to claim 1, characterized in that: The wireless transmission module is a Bluetooth module, a WIFI module, or a StarScan short-range module.

8. The sensing device for determining entry and exit based on human body electromagnetic induction according to claim 1, characterized in that: The door magnet is covered with adhesive backing.

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