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Impact type pulse triggering time synchronization device

A technology of time synchronization device and pulse triggering, which is applied in the direction of measuring devices, navigation, instruments, etc., can solve the problems of poor versatility, inconvenient portability, labor-intensive, etc., and achieve the effects of ensuring time synchronization accuracy, portability, and simple structure

Inactive Publication Date: 2014-02-05
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, in order to achieve high-precision alignment, the software method often has complex algorithm design, large amount of calculation, and limited accuracy.
The use of specially designed INS / GNSS integrated synchronization circuits can often get better synchronization results, but it is often aimed at specific equipment, which is not universal and not easy to carry. more demanding
Designing and manufacturing special hardware synchronization modules for various integrated navigation devices requires a lot of manpower and high material costs

Method used

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  • Impact type pulse triggering time synchronization device
  • Impact type pulse triggering time synchronization device
  • Impact type pulse triggering time synchronization device

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] This specific implementation is applicable to the time synchronization between INS and NovAtel DL_V3 and Trimble R series surveying GPS receivers.

[0033] The structure of the knocking mechanism in this specific implementation is shown in figure 1 , including a tube (3) and a retractable hammer and a fixing plate (7) arranged in the tube (3). The retractable percussion hammer includes a hammer head (4), a spring (5) and a connecting rod (6). The head end of the connecting rod (6) fixes the hammer head (4), and the tail end is provided with a limit piece (9); 6) Pass through the hole on the fixed plate (7) fixed on the inner wall of the tube (3) and move relative to the fixed plate (7); the spring (5) is set outside the connecting rod (6), and the spring (5) has two The ends are respectively connected with the hammer head (4) and the fixed plat...

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Abstract

The invention discloses an impact type pulse triggering time synchronization device. The impact type pulse triggering time synchronization device comprises a knocking mechanism, a pulse generation circuit, a pulse conditioning circuit and a pulse output interface circuit, which are connected in sequence, wherein the knocking mechanism comprises a telescopic knocking hammer; the telescopic knocking hammer is connected with a potentiometer through a metal contact; the potentiometer is connected with a normally closed switch of the pulse generation circuit; the normally closed switch is controlled to be turned on or turned off by applying a force to the telescopic knocking hammer; the pulse generation circuit is used for generating a pulse signal according to the turn-on or turn-off of the normally closed switch; the pulse conditioning circuit is used for conditioning the pulse signal into a specific wave signal according to electrical parameters of a trigger interface of a to-be-synchronized sensor and outputting the specific wave signal to the to-be-synchronized sensor through the pulse output interface circuit. The impact type pulse triggering time synchronization device is simple in structure, convenient to carry and use and high in generality, and can be used for time synchronization between motion perception sensors such as an inertial navigation system (INS) or an inertial measurement unit (IMU) and other types of sensors; the time synchronization accuracy can be guaranteed.

Description

[0001] technical field [0002] The patent of this invention relates to an impact-type pulse-triggered time synchronization device, which is used for time synchronization between INS (inertial navigation system) and other types of sensors. Background technique [0003] In scientific research and engineering applications, it is usually necessary to use various sensors to obtain target information. For more complex application scenarios, it is usually necessary to use different types of sensors to collect different types of information or to use different methods for redundant observation of the same target quantity. Therefore, precise time synchronization of data collected by different types of sensors is of great significance. As a position, velocity and attitude sensor, INS is a necessary prerequisite for high-precision time synchronization of the output data of each sensor before performing data fusion calculation with other types of sensors. For this reason, additional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/16
CPCG01C21/165G01S19/47
Inventor 牛小骥张辉郭文飞翟冰罗国军王青江
Owner WUHAN UNIV
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