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Time calibration system and method, electronic equipment and storage medium

A technology of time calibration and time error, which is applied in the field of data processing, can solve the problems of time error, laser signal and attitude data that cannot guarantee time synchronization, and achieve the effect of avoiding jitter error and ensuring time synchronization

Pending Publication Date: 2022-04-29
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

However, in the existing technology, each link of the system will generate time errors due to jitter during operation, resulting in the inability to guarantee time synchronization between laser signals and attitude data

Method used

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  • Time calibration system and method, electronic equipment and storage medium
  • Time calibration system and method, electronic equipment and storage medium

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Embodiment Construction

[0035] 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 the present application, rather than all the embodiments. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation of the present application. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0036] It should be noted that in this article, relative terms such as "first" and "second" are only used to distinguish one e...

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Abstract

The invention discloses a time calibration system and method, electronic equipment and a storage medium. The method comprises the following steps: acquiring a digital signal and attitude data, wherein the attitude data is obtained according to an inertial sensor in a turntable unit; analyzing the digital signal to determine the emission time of the laser signal corresponding to the digital signal; reading a target angular velocity corresponding to the emission time from the emission time; and calculating a time error between an output moment corresponding to the attitude data and an emission time corresponding to the laser signal based on the target moment and the target angular velocity, and carrying out time calibration according to the time error. According to the embodiment of the invention, the time error between the output time corresponding to the attitude data and the emission time corresponding to the laser signal is calculated according to the attitude data and the digital signal converted from the laser signal, and the time of the system can be subsequently calibrated by using the time error, so that the jitter error generated in each link is effectively avoided, and the calibration accuracy is improved. And time synchronization of the laser signal and the attitude data is ensured.

Description

technical field [0001] The present application relates to the field of data processing, and in particular to a time calibration system, method, electronic equipment and storage medium. Background technique [0002] Multi-sensor fusion technology is an application hotspot for autonomous systems to obtain perceptual information. Commonly used sensors for autonomous systems such as robots, drones, and autonomous driving include: LiDAR can perceive the depth information of the external environment, and image sensors can perceive the texture information of the external environment. An IMU (Inertial Measurement Unit) is capable of measuring the acceleration and three-axis attitude of an object. Multi-sensors complement the perception information of the external environment, and the data and information obtained by multiple sensors are gathered together for comprehensive analysis in order to describe the external environment more accurately and reliably, thereby improving the corre...

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Application Information

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IPC IPC(8): G01C21/00G01C25/00
CPCG01C21/005G01C25/00Y02A90/10
Inventor 刘丹张晶威刘铁军
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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