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Non-contact synchronous measuring instrument for subgrade and rail vibration

A synchronous measurement, non-contact technology, used in instruments, measuring devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve the problems of large error, low precision, and cumbersome testing methods, achieve intelligentization, avoid precision reduction, and eliminate The effect of human factors

Inactive Publication Date: 2010-12-15
TIANJIN UNIV
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  • Abstract
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Problems solved by technology

This measurement method has low precision, large error, and cumbersome testing methods

Method used

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  • Non-contact synchronous measuring instrument for subgrade and rail vibration
  • Non-contact synchronous measuring instrument for subgrade and rail vibration
  • Non-contact synchronous measuring instrument for subgrade and rail vibration

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Embodiment Construction

[0035] The non-contact synchronous measuring instrument for roadbed and rail vibration of the present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings.

[0036] Such as figure 1 As shown, the non-contact synchronous measuring instrument of roadbed and rail vibration of the present invention includes a CCD drive circuit 1, an A / D and SRAM working timing controller and an address counter timing generator 2, and a CCD video signal binarization processing unit 3 And based on the data acquisition interface circuit 4 of parallel interface, wherein, described CCD driving circuit 1 is connected respectively CCD video signal binarization processing unit 3 and A / D and SRAM work timing controller and address counter timing generator 2, for The CCD device provides necessary working pulses, and generates an interface signal with the data acquisition card; the output of the CCD video signal binarization processing unit 3 and the A...

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Abstract

The invention relates to a non-contact synchronous measuring instrument for subgrade and rail vibration. A CCD (Charge Coupled Device) drive circuit is respectively connected with a CCD video signal binaryzation processing unit, an A / D and SRAM (Static Random Access Memory) working time sequence controller and an address counter time sequence generator and used for providing a necessary working pulse for a CCD and generating an interface signal between the CCD drive circuit and a data acquisition card; and the output of the CCD video signal binaryzation processing unit and the outputs of the A / D and SRAM working time sequence controller and the address counter time sequence generator are connected with a data acquisition interface circuit based on a parallel interface. By computer control automatic measurement, the invention greatly prevents the influence of human factors, realizes the intellectualization of detection, solves the synchronous problem of two different vibration frequencies and vibration amplitudes by non-contact synchronous measurement and can carry out software calibration at random, thereby preventing precision reduction caused by long-term use. A photoelectric probe is just dedusted regularly without replacing a detecting probe regularly.

Description

technical field [0001] The invention relates to a measuring instrument. In particular, it relates to a non-contact synchronous measuring instrument for the vibration of the roadbed and the rail which can realize the non-contact synchronous measurement of the vibration of the roadbed and the rail. Background technique [0002] High-speed railway is a symbol of transportation modernization. Due to its advantages of fast speed, large transport capacity, low energy consumption, light pollution, small land occupation and good safety, it has been widely valued by countries all over the world. At present, my country is in the stage of rapid economic development. Railway transportation is the main artery of my country's national economy. Railway is an indispensable means of transportation for the communication of urban and rural material exchanges and economic development. The development of high-speed railway will bring vigor and vitality to my country's railway transportation. B...

Claims

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Application Information

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IPC IPC(8): G01H9/00
Inventor 罗韬史再峰
Owner TIANJIN UNIV
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