Low-power consumption detection structure

Abstract

The invention discloses a low-power consumption detection structure, which comprises an ultrasonic detector and a frequency modulation circuit matched with the ultrasonic detector. The low-power consumption detection structure can overcome the defects of low transmitting frequency, high power consumption, energy waste and the like in the prior art so as to achieve the advantages of high transmitting frequency, low power consumption and energy conservation.

Description

[0001] technical field [0002] The invention relates to ultrasonic detection technology, in particular to a detection structure with low power consumption. [0003] Background technique [0004] In ultrasonic detection technology, an ultrasonic detector is an alarm detector that uses ultrasonic waves (above 20,000 Hz) that cannot be heard by the human ear as a detection source, and can be used to detect moving objects in space. [0005] According to the structure and installation method of ultrasonic detectors, ultrasonic detectors can be divided into two categories: (1) Two ultrasonic transducers are installed in the same shell, that is, receiving and sending combined type, and its working principle is based on the multiple sound waves. The Doppler effect, also known as the Doppler type; the energy field distribution of the ultrasonic waves emitted by this ultrasonic detector has a certain directionality, generally an elliptical energy field distribution in the direction-...

AI Technical Summary

Problems solved by technology

[0007] At present, in the ultrasonic detection technology, the emission frequency of the ultrasonic detector is low, and the power consumption is large, which is not conducive to energy saving.

[0008] It can be seen that in the process of realizing the present invention, the inventors have found that at least there are defects such as low transmission frequency, large power consumption and waste of energy in the prior art.

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