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Method for measuring flight time and time-to-digital converter

A time digital and time-of-flight technology applied in the detection field to reduce the number of transmissions and save data resources

Pending Publication Date: 2022-04-05
NINGBO ABAX SENSING ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present application is to provide a method for measuring time-of-flight and a time-to-digital converter for the deficiencies in the above-mentioned prior art, so as to solve the technical problem of the pressure of TDC transmission data in the existing pixel array

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  • Method for measuring flight time and time-to-digital converter

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Embodiment Construction

[0029] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0030] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art w...

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Abstract

The embodiment of the invention provides a time-to-digital converter, which is characterized in that the time-to-digital converter comprises a statistics module based on a first clock and used for counting a first time interval where an input signal of the time-to-digital converter is located; and a measurement module based on a second clock for measuring a first moment of the input signal in the first time interval. The measured distance is divided into a plurality of time intervals, the flight time is obtained only through one-time statistics and one-time measurement, and compared with a traditional one-time measurement mode, data resources of the TDC are saved. Therefore, the data transmission quantity can be reduced to a certain extent.

Description

technical field [0001] The present application relates to the field of detection technology, in particular to a method for measuring flight time and a time-to-digital converter. Background technique [0002] Time of flight (TOF), the principle is to continuously send light pulses to the target, and then use the sensor to receive the light returned from the object, and obtain the target distance by detecting the flight (round-trip) time of the light pulse . Direct Time of Flight (DTOF) is a kind of TOF. DTOF technology directly obtains the target distance by calculating the emission and reception time of light pulses. It has simple principle, good signal-to-noise ratio, high sensitivity and accuracy. Higher merits have received more and more attention. That is, direct time-of-flight detection determines the distance to a target by directly measuring the length of time between when radiation is emitted and when it is detected after it has reflected from an object or other ta...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04F10/00G01S7/4865G01S17/08G01S17/894
Inventor 雷述宇
Owner NINGBO ABAX SENSING ELECTRONICS TECH CO LTD