Double-module infrared microwave movement detection device

Abstract

The invention provides a double-module infrared microwave movement detection device. The double-module infrared microwave movement detection device comprises a central processing logic unit, a power supply rectifier module, an infrared probe module and a microwave receiving and sending module, wherein the power supply rectifier module, the infrared probe module and the microwave receiving and sending module are connected with the central processing logic unit. Three points on the movement path are detected through three infrared probes, and the precedence of the existence signal generation times of the three points is analyzed so that the movement direction in which a human body pass through the area can be obtained. When human body existence signals are generated, a microwave transmitter can be turned on through the central processing logic unit, and a signal of a microwave receiver is received at the same time; the accurate time at which the human body leaves the detection area is calculated by analyzing the magnitude of the signal; the double-module infrared microwave movement detection device has the advantages of being accurate in signal, clear in directivity and high in anti-interference capacity, and can be widely applied to intelligent control fields of subways, buildings, hotels and houses.

Description

technical field [0001] The invention relates to the technical field of infrared detection, in particular to a dual-module infrared microwave mobile detection device. Background technique [0002] Infrared detector is a kind of detection of the existence or movement of the human body through the pyroelectric element, and converts the output signal of the pyroelectric element into a voltage signal. When there is a difference between the voltage signal before and after, it sends a signal to the system; , There is no difference in the signal output by the thermoelectric element, and there will be a signal blind area, and it is impossible to judge whether the human body exists. [0003] The existing infrared detector is a low-cost and widely used detector for detecting the presence of human body, but due to its internal reasons, it cannot make accurate judgments on the direction of human body movement and the situation of human body standing still for a long time. [0004] For e...

AI Technical Summary

Problems solved by technology

The invention utilizes the principle of the microwave detector to emit intermittent microwaves through the microwave transmitter, and then receives the returned microwaves through the microwave receiver, and calculates the moving speed of the object and the displacement from the local area according to the signal strength, and can estimate the moving direction of the human body. Make accurate judgments when the human body is still for a long time, and solve the problems of resource waste and poor comfort caused by existing human body infrared sensors

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