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A system and method for precisely locating data collection time

A technology of data acquisition and precise positioning, which is applied in elastic testing, testing of machines/structural components, instruments, etc. It can solve problems such as misstored data, loose establishment, and lost data, so as to achieve high measurement accuracy and avoid measurement less precise effects

Active Publication Date: 2019-07-19
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, when the equipment is collecting and storing data, there will be occasional situations where data is incorrectly stored or lost
That is, the above assumption (2) is not strictly true

Method used

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  • A system and method for precisely locating data collection time
  • A system and method for precisely locating data collection time
  • A system and method for precisely locating data collection time

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] figure 1 It is a system for precisely locating the time of data collection in Embodiment 1 of the present invention. See figure 1 The system for accurately locating the time of data collection provided in this embodiment includes: a system time master control module 1, a time electrical signal generation module 2, at least one electrical signal acquisition device 3, an electrical signal processing module 4, a trigger module 6 and a measured Object 9.

[0083] The system time master control module 1 provides a reference time, and sends the reference time to the time electrical signal generation module 2 and the trigger module 6 .

[0084] The time electrical signal generation module 2 is coupled with the system time master control module 1, receives the reference time, and generates at least one time electrical signal based on the reference time. The time electrical signal is an electrical signal that changes with time according to a specific rule, and each time electr...

Embodiment 2

[0091] figure 2 It is a system for precisely locating the time of data collection in Embodiment 2 of the present invention. See figure 2 The system for accurately locating the time of data collection provided in this embodiment includes: a system time master control module 1, a time electrical signal generation module 2, at least one electrical signal acquisition device 3, an electrical signal processing module 4, a trigger module 6 and a measured Object 9 and image acquisition and processing subsystem, including light source matrix control module 5, camera 7 and image processing module 8.

[0092] The system time master control module 1 provides a reference time, and sends the reference time to the time electrical signal generation module 2 and the trigger module 6;

[0093]The time electrical signal generation module 2 is coupled with the system time master control module 1, receives the reference time, and generates at least one time electrical signal based on the refer...

Embodiment 3

[0109] Figure 4 It is a flowchart of a method for precisely locating data collection time in Embodiment 3 of the present invention. See Figure 4 , the method for precisely locating the data collection moment in this embodiment includes:

[0110] Step S101: system installation steps, including:

[0111] The system time master control module is respectively coupled with the electrical signal generation module and the trigger module, the electrical signal generation module and the trigger module are respectively coupled with the electrical signal acquisition equipment, and the electrical signal acquisition equipment is respectively connected with the measured object and the electrical signal The processing device is coupled, and there is at least one electrical signal acquisition device, wherein the measured object includes the measured object body and at least one sensing unit, the sensing unit is associated with the measured object body, and the sensing unit conducts the me...

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Abstract

The application provides a system and method for precise positioning of a data acquisition moment. The system includes a system time general control module which sends reference time to a time electrical signal generation module and a triggering module; the time electrical signal generation module which generates time electrical signals based on the reference time, the time electrical signals being electrical signals changing with time according to specific laws, and the specific laws of the time electrical signals being different; the triggering module which generates a first triggering signal based on the reference time, electrical signal acquisition equipment being triggered by the first triggering signal and synchronously receiving the time electrical signals and physical quantity electrical signals to obtain measured data; and an electrical signal processing module which receives the measured data and converts the time electrical signal data into moment information of electrical signal acquisition to obtain a measurement result, the measurement result being a physical quantity electrical signal marking the moment information. The system provided by the application utilizes theelectrical signals to edit time, and can perform precise positioning of data acquisition time.

Description

technical field [0001] The invention belongs to the technical field of data collection, and in particular relates to a system and method for precisely locating the time of data collection. Background technique [0002] In experiments to study the dynamic mechanical properties of materials or structures, it is often necessary to combine a variety of measuring equipment to quantitatively measure the strain, displacement, acceleration and other mechanical quantities during the dynamic loading process of the structure. Based on this, the dynamics of structures under impact loads can be studied in depth. Deformation and failure mechanism and other issues. [0003] When data acquisition devices work together, it is common practice to divide a trigger signal into multiple channels in parallel to trigger different acquisition devices. However, due to the inconsistency of the response time of different data acquisition devices to the trigger signal and the existence of travel time e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M5/00G01N3/00
CPCG01M5/0041G01N3/00
Inventor 马沁巍刘振宇田强马少鹏徐天宇
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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