Bridge pier vibration measurement system

A vibration measurement and pier technology, applied in the detection field, can solve the problems of inconvenient measurement work, inconvenient field operation, large volume, etc., and achieve good measurement analysis, convenient field operation, and small size.

Pending Publication Date: 2020-10-09
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vibrometer used by the highway department is bulky and inconvenient for field work, and it does not have the functions of automatically recording, displaying and printing the measurement results, which brings a lot of inconvenience to the measurement work

Method used

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  • Bridge pier vibration measurement system

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Effect test

Embodiment 1

[0020] Referring to the accompanying drawings, a bridge pier vibration measurement system includes an ultra-low frequency absolute vibration displacement measurement sensor, a signal conditioning circuit unit, a single-chip microcomputer, a USB controller and a notebook computer.

[0021] The ultra-low frequency absolute vibration displacement measurement sensor is used to collect vibration signals of the bridge, and is preferably installed at the top of the bridge pier and in the middle of the bridge between the two piers, and its installation direction is perpendicular to the direction of vehicle movement, that is, perpendicular to the direction of the bridge.

[0022] The signal conditioning circuit unit is used to perform signal amplification, filtering and other conditioning on the signal collected by the ultra-low frequency absolute vibration displacement measurement sensor, and transmit the conditioned signal to the single-chip microcomputer.

[0023] The single-chip mic...

Embodiment 2

[0030] This embodiment introduces the communication work between the CygnalF005 single-chip microcomputer system and the host through the USB controller (PDIUSBD12).

[0031] In actual development, two transmission methods, control transfer and block transfer, are used. Control transfer is used to implement various control operations on the device by the USB bus driver (USBD.SYS) located on the host computer and the written function driver, while block transfer It is used to transfer the collected data from the device to the host. When the USB controller detects a transmission request initiated by the host computer from the USB bus, the USB controller notifies the CygnalF005 microcontroller system of this request through an interrupt. The CygnalF005 single-chip microcomputer system obtains various parameters related to this transmission by accessing the status register and data register of the USB controller, and performs corresponding operations on the control register and da...

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PUM

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Abstract

The invention discloses a bridge pier vibration measurement system. The system comprises a sensor used for collecting bridge pier vibration signals, a signal conditioning circuit unit, a single-chip microcomputer, a USB controller and a notebook computer. The sensor adopts an ultralow-frequency absolute vibration displacement measurement sensor; the signal conditioning circuit unit is used for carrying out signal amplification, filtering and other conditioning on signals collected by the ultralow-frequency absolute vibration displacement measurement sensor, and the conditioned signals are transmitted to the single-chip microcomputer. A PDIUSBD12 is adopted as the USB controller; the USB controller is connected with the single-chip microcomputer and is used for realizing USB communication between the single-chip microcomputer and a notebook computer, supports a plug-and-play function and is convenient and fast. The bridge pier vibration measurement system is small in size and convenientfor field operation, and has the functions of automatically recording, displaying and printing measurement results and the like.

Description

technical field [0001] The invention belongs to the technical field of detection, and in particular relates to a bridge pier vibration measurement system. Background technique [0002] Bridge piers are the foundation of highway bridges, and the vibration characteristics of bridge piers under the action of vehicle dynamic loads are the primary factors that determine the safety and stability of vehicle driving, and are also one of the main indicators to measure the quality of highway bridges. Because the vibrometer used by the highway department is bulky, it is not convenient for field work, and it does not have the functions of automatic recording, display and printing of measurement results, which brings a lot of inconvenience to the measurement work. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a bridge pier vibration measurement system. [0004] The present invention is achieved thro...

Claims

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Application Information

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IPC IPC(8): G01H11/02
CPCG01H11/02
Inventor 刘子轶
Owner TIANJIN VOCATIONAL INST
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