Unlock instant, AI-driven research and patent intelligence for your innovation.

A Time-to-Digital Converter Based on Threshold Buffer

A time digital and buffer technology, applied in the field of numerical control, can solve the problems of quantization error, delay time of a single delay unit with limited resolution, etc., and achieve the effect of reducing quantization error and improving precision

Active Publication Date: 2020-10-02
NANJING UNIV OF POSTS & TELECOMM
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the structure of the traditional TDC is simple and easy to implement, the resolution is limited by the delay time of a single delay unit
At the same time, for the amount of time that multiple measurements are required, ordinary TDC multiple measurements cannot reduce the quantization error

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
  • A Time-to-Digital Converter Based on Threshold Buffer
  • A Time-to-Digital Converter Based on Threshold Buffer
  • A Time-to-Digital Converter Based on Threshold Buffer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, a time-to-digital converter based on a threshold buffer designed in the present invention includes a chain first delay unit T a1 , a chain second delay unit T a2 , the third delay unit T of chain a a3 ,..., the sixteenth delay unit T of a chain a16 ;b chain first delay unit T b1 , b chain second delay unit T b2 , b chain third delay unit T b3 , ..., the sixteenth delay unit T of the b-chain b16 ;First inverter INV 1 , the second inverter INV 2 ; encoder, where:

[0022] The measurement period signal input terminal LP port of the time-to-digital converter based on the threshold buffer is connected with the first delay unit T of the a chain a1 The IN port of the b-chain first delay unit T b1 IN port of the first inverter INV 1 The input terminal of the second inverter INV 2 Th...

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 kind of time-to-digital converter based on the threshold buffer of the present invention comprises N a-chain delay units and b-chain delay units, encoders, first and second inverters; measurement period signal input port LP port and The IN port of the first delay unit of the a chain, the IN port of the first delay unit of the b chain, the input end of the first inverter INV1 and the input end of the second inverter are connected; the measurement signal input end EN port is connected to each The enable control terminal EN ports of the a-chain delay unit and the b-chain delay unit are connected; the output terminal of the first inverter is connected with the clearing terminal rst port of each a-chain delay unit; the second inverter The output end of the device is connected with the clearing end rst port of each b-chain delay unit. The present invention measures time through a threshold buffer, thereby realizing cumulative summation when measuring discontinuous and dispersed time, reducing quantization errors, and simultaneously selecting measurement values ​​with smaller quantization errors in double chains to improve resolution.

Description

technical field [0001] The invention relates to a time-to-digital converter based on a threshold buffer, belonging to the technical field of numerical control. Background technique [0002] DCO plays an important role in many scientific research fields, and it is the physical basis of high-precision laser pulse ranging, ultrasonic ranging and radar ranging. The time interval for the measuring beam to go back and forth between the ranging instrument and the measured target is proportional to the distance, and the ranging accuracy is directly determined by the measurement accuracy of the time interval. Laser ranging, radar ranging and ultrasonic ranging are widely used in military, aerospace, aviation, metallurgy and other aspects. Accurate range measurement of strike targets in the military is the basis of precise strikes. Improving the resolution of time interval measurement means effectively improving the accuracy of guidance and detonation; The flight process has more st...

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): G04F10/00
CPCG04F10/005
Inventor 王子轩徐浩丁浩田子琛韩宇辉
Owner NANJING UNIV OF POSTS & TELECOMM