Time accuracy calibration method, device and electronic equipment

A technology of time accuracy and calibration method, applied in measurement devices, re-radiation of electromagnetic waves, radio wave measurement systems, etc., can solve problems such as minimum time accuracy deviation, inaccurate system time measurement, and inaccurate system ranging distance.

Active Publication Date: 2021-08-20
SHENZHEN ADAPS PHOTONICS TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, in the existing time-of-flight systems related to TDC time measurement, due to the deviation of the minimum time accuracy of TDC, the system has inaccurate time measurement, which eventually leads to the problem of inaccurate distance measurement of the system

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
  • Time accuracy calibration method, device and electronic equipment
  • Time accuracy calibration method, device and electronic equipment
  • Time accuracy calibration method, device and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045]In order to facilitate the understanding of the present application, and to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth to facilitate a full understanding of the application, and preferred embodiments of the application are shown in the accompanying drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the application more thorough and comprehensive. The present application can be implemented in many other ways that are different from those described here, and those skilled in the art can make similar improvements wit...

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

This application relates to a time accuracy calibration method, device and electronic equipment. By controlling the pulse signal received by the time-to-digital converter in each sampling period to distribute evenly, when the pulse signal collected in each collection time period reaches the target number , to obtain the actual number of pulses collected in each collection time period, the theoretical number of pulses and the total number of pulses collected in the sampling cycle time, and then obtain the cumulative deviation value of the pulse number, and finally calculate the minimum ranging time accuracy according to the cumulative deviation value Calibration is performed to improve the time measurement accuracy of the time-of-flight module. Since multiple pulse signals are evenly distributed within the sampling period of the time-to-digital converter, the number of pulse signals in each acquisition time period can reflect the time length of each minimum ranging time accuracy, thus accumulating the deviation of the number of pulses The value can realize the calibration of the minimum ranging time accuracy, and the time measurement accuracy can be effectively improved without the introduction of complex test equipment.

Description

technical field [0001] The invention relates to the field of time-of-flight ranging, in particular to a time precision calibration method, device and electronic equipment. Background technique [0002] The direct time of flight (dTof) ranging system uses a Time-to-Digital Converter (TDC) to sample and calculate the time dimension, and the time measurement accuracy of the TDC will directly affect the distance measurement of the dTof system precision. [0003] However, due to the nonlinearity of the electronics, the timing accuracy varies among multiple TDCs. The minimum ranging time precision of each TDC can be determined by the Least Significant Bit (LSB, least significant bit), and the actual minimum ranging time precision will have a slight difference from the LSB of each TDC. Therefore, within a ranging period, the difference between the actual minimum ranging accuracy and LSB will be accumulated so that the difference between the flight time collected by the TDC and th...

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 Patents(China)
IPC IPC(8): G01S7/497G01S17/14
CPCG01S7/497G01S17/14
Inventor 侯昌韬张超
Owner SHENZHEN ADAPS PHOTONICS TECH CO LTD
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