Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sound wave positioning device

A technology of sound wave positioning and sound wave reception, which is applied in the field of sound wave positioning devices and can solve the problems of low accuracy of sound wave positioning

Inactive Publication Date: 2019-06-21
林项武
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-precision acoustic wave positioning device to solve the technical problem of low accuracy of acoustic wave positioning in the prior art

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
  • Sound wave positioning device
  • Sound wave positioning device
  • Sound wave positioning device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 , for the sine or cosine signal received by the ultrasonic receiving sensor, it is first amplified by the first-level amplifier module and the second-level amplifier module, and then filtered by the band-pass filter module. The signals before and after the phase shift are sent to two groups of electrical signal-to-DC level modules, and each group of electrical signal-to-DC level modules consists of a non-inverting hysteresis comparator module and an inverting hysteresis comparator module to obtain 4 Group intermittent signal level output.

Embodiment 2

[0045] Such as figure 2 , for the sine or cosine signal received by the ultrasonic receiving sensor, it is first amplified by the first-level amplifier module and the second-level amplifier module, and then filtered by the band-pass filter module. The signals before and after phase shifting are respectively sent to 2 groups of electrical signal to DC level modules, and each group of electrical signal to DC level modules includes a window comparator module to obtain 2 groups of discontinuous signal levels and 2 groups of discontinuous signal levels The signals are combined by the OR gate logic operation module and then output.

Embodiment 3

[0047] Such as image 3 , for the sine or cosine signal received by the ultrasonic receiving sensor, it is first amplified by the first-stage amplifier module and the AGC automatic control gain circuit module, and then filtered by the band-pass filter module, and the differential circuit module is used to shift the phase by π / 2, The signals before phase shift and after phase shift are sent to 2 sets of electrical signal-to-DC level modules, and each set of electrical signal-to-DC level modules consists of 1 in-phase Schmitt trigger module and 1 inverse-phase Schmitt trigger module , get 4 sets of intermittent signal level output.

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

A sound wave positioning device comprises a time measurement and data processing module, three groups of fixedly arranged sound wave receiving sensors and sound wave receiving circuits, and a group ofsound wave emission sensor and sound wave emission circuit, or comprises three groups of sound wave emission sensors and sound wave emission circuits, and a group of sound wave receiving sensor and sound wave emission circuit; each sound wave receiving circuit comprises an amplifying circuit, and also comprises a phase shift circuit and electric signal-into-direct current level circuits, the electric signal before phase shift and the electric signal with the phase changed through the phase shift circuit respectively pass through two paths of electric signal-into-direct current level circuits,to output discontinuous direct current signal level, the two paths of signals are combined, to output measurement time, and three groups of distance measurement values are measured respectively, so that positioning is realized. The sound wave positioning device has the technical effect that the input sine or cosine or approximate electric signal can be converted into the direct current signal level by adopting the combination of the phase shift circuit and the periodically changing electric signal-into-direct current level circuits, so that the high-precision time measurement is realized.

Description

technical field [0001] The invention relates to an acoustic wave positioning device. Background technique [0002] Using the 3-point positioning principle to achieve positioning through 3 times of distance measurement, the distance measurement uses the sound wave transit time method. The problem is that the sine or cosine wave electrical signal is obtained after the sound wave is received by the sensor, and only discontinuous signals can be obtained through the amplification and comparison circuit. The signal level and the length of the signal level break determine the accuracy of the transit time measurement, which in turn affects the distance measurement accuracy. [0003] Moreover, the speed of sound measurement is usually calculated by formulas including parameters such as temperature and air pressure, and there are certain errors, which further reduces the accuracy of ranging and positioning. Contents of the invention [0004] The object of the present invention is t...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01S5/18
Inventor 林项武
Owner 林项武
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com