Ultrasonic distance measurement system and method for controlling ultrasonic distance measurement system to measure distance

Abstract

The invention discloses an ultrasonic distance measurement system and a method for controlling the ultrasonic distance measurement system to measure the distance. The ultrasonic distance measurement system comprises an ultrasonic sensor and a mobile terminal, wherein the ultrasonic sensor is used for transmitting an ultrasonic signal to a measurement target and receiving an analog signal reflected by the target; the mobile terminal is used for receiving the analog signal received by the ultrasonic sensor through an audio port of the mobile terminal and carrying out timing operations, the distance is calculated on the basis of the obtained analog signal and a timing result, the obtained distance is stored and displayed, and the ultrasonic sensor is controlled to be started. The mobile terminal is adopted to serve as a processor, a cycle sine wave signal is output to a power obtaining circuit through a second channel of the audio port to serve as a power supply of the ultrasonic sensor, an intermittent power supply strategy is adopted, and electricity is saved; a cycle sine wave signal is transmitted to a transmitter of the ultrasonic sensor through a first channel of the audio port to provide a square signal with proper power for the ultrasonic sensor, and an echo signal of the ultrasonic sensor is received through a fourth channel of the audio port.

Description

technical field [0001] The invention relates to the technical field of ranging, in particular to an ultrasonic ranging system and a method for controlling the ranging. Background technique [0002] Distance is a parameter that needs to be detected in different occasions and controls, and distance measurement has become a problem to be solved in data collection. Today's computer technology, automation technology and industrial robots have been continuously developed and widely used, and the distance measurement problem is becoming more and more important. At present, the common ranging methods are: laser ranging, radar ranging and ultrasonic ranging. Among them, laser ranging is to use laser to measure the distance of the target. When the laser rangefinder is working, it emits a thin laser beam to the target, and then the photoelectric element receives the laser beam reflected by the target, and the counter in the control circuit measures the time from emission to reception...

AI Technical Summary

Problems solved by technology

The shortcomings of ultrasonic rangefinders using single-chip microcomputers and display screens have gradually emerged, which have brought defects such as high power consumption, high cost, and large volume that are not easy to carry.

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