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Multi-sensor time synchronization method, device and system, electronic device and medium

A multi-sensor, time synchronization technology, applied in the field of communication, can solve the problems of lack of multi-sensor high-precision time synchronization method, weak GPS signal, etc., and achieve good scalability and portability

Active Publication Date: 2021-04-16
ZHEJIANG LAB
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Problems solved by technology

[0004] The purpose of the embodiments of the present application is to provide a multi-sensor time synchronization method, device, system, electronic equipment, and medium to solve the scene of weak GPS signals in related technologies, or for equipment that does not support GPS or IEEE1588 network protocols. Problems in implementing multi-sensor high-precision time synchronization methods

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  • Multi-sensor time synchronization method, device and system, electronic device and medium
  • Multi-sensor time synchronization method, device and system, electronic device and medium

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[0029] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

[0030] The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should also be understood that the term...

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Abstract

The invention discloses a multi-sensor time synchronization method, device and system, an electronic device and a medium, and the method comprises the steps: receiving initial timestamp time service transmitted by an upper computer, starting an internal timer, and generating a first trigger pulse signal and a second trigger pulse signal; sending the timestamp for generating the second trigger pulse signal and a pulse count value to the upper computer for realizing matching alignment with sensor data; simulating a GPS receiver function, generating a pulse per second synchronization signal and a time message, and sending the pulse per second synchronization signal and the time message to the first sensor and the second sensor to enable the sensors and the time main control equipment to realize internal timing synchronization; and respectively sending the first trigger pulse signal and the second trigger pulse signal to a second sensor and a third sensor for triggering the two types of sensors to perform data acquisition and sending the acquired data to an upper computer. Therefore, multi-sensor data acquisition time synchronization is realized, and the problem of multi-sensor time synchronization in a scene of weak GPS or no GPS signal and no real time service is solved.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a multi-sensor time synchronization method, device, system, electronic equipment and media. Background technique [0002] Multi-sensor time synchronization is the link between each sensor and the basis of calibration and data calculation in multi-sensor fusion technology. In the fields of robotics, autonomous driving, and computer communications, sensor time synchronization is widely used. Since the data frequency, frame length, and response delay of different types of sensors are not the same, compared with collecting and synchronizing through software methods, adopting hardware time synchronization mode has lower delay and higher reliability, and reduces the dependence on synchronization error compensation algorithm . [0003] The traditional sensor synchronization method is generally based on the Global Positioning System (GPS) or the network interface...

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Application Information

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IPC IPC(8): H04W56/00H04J3/06H04W4/38
Inventor 宋俊男谢天朱世强李月华陈勇
Owner ZHEJIANG LAB
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