Ultrasonic distance measuring method and device based on multiple emission frequencies

A technology of transmitting frequency and ultrasonic waves, which is applied in measurement devices, re-radiation of sound waves, radio wave measurement systems, etc. It can solve the problems of low measurement accuracy of ultrasonic ranging technology, and achieve the effect of novel design and high ranging accuracy.

Inactive Publication Date: 2015-04-22
STATE GRID CORP OF CHINA +1
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention solves the problem of low measurement accuracy of the existing ultrasonic ranging te

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultrasonic distance measuring method and device based on multiple emission frequencies
  • Ultrasonic distance measuring method and device based on multiple emission frequencies
  • Ultrasonic distance measuring method and device based on multiple emission frequencies

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Ultrasonic distance measurement method based on multiple transmission frequencies, including the transmission and reception of ultrasonic pulse signals in one measurement period. The transmitted ultrasonic pulse signals are 8 ultrasonic pulse signals of different frequencies, and ultrasonic pulse signals at each frequency Start timing at the transmission time and stop timing when the echo signal of the corresponding frequency is received. In this way, a maximum of 8 time values ​​can be obtained. Take the arithmetic average of these time values ​​to obtain the calculated value t of the ultrasonic pulse signal propagation time of this measurement period. 0 , Into the formula s=170 t 0 In, the distance s from the object to be measured is obtained.

[0016] Ultrasonic distance measuring device based on multiple transmission frequencies, including control unit MCU1. The signal output end of the control unit MCU is connected to the ultrasonic generating circuit 2, and the ultraso...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to an ultrasonic distance measuring technology, in particular to an ultrasonic distance measuring method and device based on multiple emission frequencies. The problem that an existing ultrasonic distance measuring technology is low in measuring precision is solved. The ultrasonic distance measuring method includes the steps that ultrasonic pulse signals are emitted and received within a measurement period, wherein the emitted ultrasonic pulse signals are eight ultrasonic pulse signals of different frequencies; timekeeping is started when the ultrasonic pulse signal of each frequency is emitted; timekeeping is stopped when echo signals of corresponding frequencies are received; in this way, at most eight time values are obtained, an arithmetic mean value of the time values is obtained, then a calculation value t0 of ultrasonic pulse signal propagation time within the measurement period is obtained and brought into the formula s=170t0, and finally the distance s from an object to be measured is obtained. The method and device are high in distance measuring precision. According to the technical scheme, the ultrasonic distance measuring method and device are novel and unique in design and suitable for various distance measuring fields.

Description

Technical field [0001] The invention relates to an ultrasonic ranging technology, in particular to an ultrasonic ranging method and a device based on multiple emission frequencies. Background technique [0002] There are generally three methods of distance measurement using sensors: laser distance measurement, ultrasonic distance measurement and eddy current distance measurement. The eddy current ranging sensor has high sensitivity and limited measurement range (1~10mm), which is only suitable for short-distance testing. The laser ranging sensor is suitable for long-distance measurement, and the measurement range can reach several kilometers or even farther. It has high environmental requirements, and smoke and dust have a great impact on laser propagation. The measuring range of ultrasonic sensors is 2cm-7m, which is often fast, convenient, simple to calculate, and easy to achieve real-time control. [0003] Acoustic waves with a frequency above 20KHz are called ultrasonic waves...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01S15/08
CPCG01S15/08
Inventor 郭瑞敏赵锐钟晓霞
Owner STATE GRID CORP OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap