Moving object detecting device based on microwave transducer and ultrasonic transducer

Abstract

The invention relates to a moving object detecting device based on a microwave transducer and an ultrasonic transducer. The moving object detecting device comprises a low-power dissipation microcontroller unit, the microwave transducer, the ultrasonic transducer, a signal amplifying and filtering processing circuit, a field bus interface unit, a temperature transducer and a power source unit. The microwave detecting technology and the ultrasonic detecting technology are combined. The detecting distance of the microwave transducer is far, the response speed is high, the anti-jamming capability is high, the measuring precision of the ultrasonic measurement is high, and the angle range is small. When the microwave transducer detects that a moving object passes a detecting area, the ultrasonic transducer is started immediately to confirm that the object enters the detecting area, and the distance and speed information can be obtained. The moving object detecting device is compact in structure and capable of dealing with different environments and detecting the low-speed moving object, the problems that an existing detecting technology based on a pressure transducer, a pyroelectric infrared transducer and visual patterns is large in error, poor in anti-jamming capability and the like are well solved, and the problems that installation and construction are difficult are solved. The moving object detecting device has the advantages of being small in size, high in response speed and low in power consumption.

Description

technical field [0001] The invention relates to a moving object intelligent detection technology, in particular to a moving object detection device based on microwave and ultrasonic sensors. Background technique [0002] At present, to monitor an object, especially the movement of the human body, three methods are mainly used: pressure sensor, pyroelectric infrared sensor and visual image-based. These technologies are relatively mature, but there are some shortcomings, such as the volume of the device used in some methods Too large and inconvenient to install; some methods have too large detection range and poor detection accuracy, and some methods are expensive and cannot detect slow-moving objects. [0003] The method of arranging pressure sensors is used to detect human body movement. For example, in China in December 2011, the pressure sensor is installed under high-strength tempered glass, and the pressure on the top of the matrix block is detected to detect whether the...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the deficiencies in the prior art, and provide a moving object detection device based on microwave and ultrasonic sensors, which has the advantages of small size, fast response speed, and low power consumption, and can cope with different environments And to realize the detection of low-speed moving objects, it better solves the existing problems of pressure sensors, pyroelectric infrared sensors and visual image-based detection technologies such as large errors, troublesome installation and construction, poor anti-interference ability, and expensive prices.

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