Method for detecting embedded invasion detection system based on ultraphonic phase array

Abstract

The invention discloses an embedded invasion detection system and a detection method based on an ultraphonic phase array. The embedded invasion detection system and the detection method have the advantages of being simple in structure, low in cost, easy to achieve and easy to adjust, having high stability, working all days and the like. The invasion detection system comprises a micro-programmed control unit (MCU) main control module, the ultraphonic phase array, a field programmable gata array (FPGA) time sequence control module and an ultrasonic transducer driving module connected in series, a signal amplification and conditioning module and a high-speed A / D conversion module connected in series, an output alarm module and a bus interface. A sensor technology bases on the ultraphonic phase array adopted by the embedded invasion detection system and the detection method based on the ultraphonic phase array not only has inherent advantages of an ultrasonic wave sensor, but also can overcome defects of an existing invasion detector, expands the applied range of the invasion detector, reduces the false alarm rate, improves measurement accuracy, forms a double inspection probe with an existing invasion detection technology, can improve prevention and control scope and effectiveness limitedly, and is a novel detection technology.

Description

technical field [0001] The invention relates to an intrusion detection system, in particular to an embedded intrusion detection system and detection method based on an ultrasonic phased array. It belongs to the field of sensor technology. Background technique [0002] Ultrasonic phased array technology has been widely used in various aspects of industrial non-destructive testing, medical non-invasive testing and underwater acoustic detection. From the early one-dimensional detection to two-dimensional and three-dimensional imaging, its application range and detection accuracy are getting higher and higher. . Ultrasonic phased array is a one-dimensional or two-dimensional array composed of N ordinary ultrasonic transducers with large emission angles arranged according to a specific distribution in space, and transmits ultrasonic packets according to a specific timing and phase, forming a space. Each wave packet at a specific point (focus) produces coherent superposition (in...

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Problems solved by technology

[0020] To sum up, none of the above patents can realize long-distance scanning and detection of intruding objects, shape measurement, traveling direction and speed measurement, rough imaging and other functions

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