Multi-mode detection alarm device and method for mistakenly locking child in vehicle

Abstract

The invention provides a multi-mode detection alarm device and method for mistakenly locking a child in a vehicle. The multi-mode detection alarm device comprises a power supply, a power supply voltage stabilizer, a microwave radar module, a voice detection module, an IMU sensor, a single-chip microcomputer and an Internet of Things alarm module. The power supply supplies power to the microwave radar module, the voice detection module and the IMU sensor through the power supply voltage stabilizer. The microwave radar module, the voice detection module and the IMU sensor are connected with thesingle-chip microcomputer. The single-chip microcomputer is connected with the Internet of Things alarm module. And the Internet of Things alarm module is used for receiving the abnormal signal sent by the single-chip microcomputer and sending an alarm signal to the outside. The device is easy to install and convenient to use, the interior of the vehicle can be monitored through external equipmenton the premise that the vehicle does not need to be refitted, and the problem that a child locks the interior of the vehicle by mistake to cause danger is effectively solved.

Description

technical field [0001] The invention relates to the technical field of automobile safety, in particular to a multi-mode detection and alarm device and an alarm method for a child accidentally locking a car. Background technique [0002] With the popularity of cars, some careless parents or school bus drivers often forget their children in the car, and the children will be in danger or even die because the car is exposed to the sun. Except for a few high-end models, most of the cars currently on the market are not equipped with human detection functions to avoid such problems, and there are no such products that can be sold and installed independently on the market. [0003] At present, there are also some gizmo solutions aimed at accidentally locking the car with children, which mainly have the following problems: [0004] Question 1: The scheme of using pyroelectric sensor to detect human body; [0005] However, there are two shortcomings in the application of infrared de...

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Problems solved by technology

[0004] Question 1: The scheme of using pyroelectric sensor to detect human body;

[0005] However, there are two shortcomings in the application of infrared detection of human body in this scene, and it cannot be used in real products. The main reason is that the car is exposed to outdoor sunlight, and the temperature inside the car gradually rises. The human body infrared sensor cannot recognize the human body in the car, resulting in function failure;

[0006] Secondly, the infrared sensor of the human body has weak penetration. In the car, there are seat backs to block, and it may not be possible to identify the people in the rear row.

[0007] Problem 2: It is impossible to detect the different behaviors of children of different ages in the car, resulting in inaccurate detection, missed detection, and failure to give timely alarms

[0008] Question 3: For the school bus scene, due to the long body of the school bus, multiple rows of seats, and complex environment, it is very easy to miss it with only one detection method

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