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Multithreading data collection system synchronous control method under key control mode

A technology of data acquisition system and control mode, applied in the direction of electrical program control, comprehensive factory control, etc., can solve the problems of low sampling speed and low hardware requirements, and achieve the effect of improving overall performance and speeding up data access speed.

Active Publication Date: 2013-08-21
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

The data acquisition system of traditional ground penetrating radar equipment usually adopts the equivalent sampling method, which has a low sampling speed (the number of pulses transmitted and received per second is only 50), and has relatively low hardware requirements, and can be completed by a single thread sampling work

Method used

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  • Multithreading data collection system synchronous control method under key control mode

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0016] The computer CPU used in this example is a 4-core I7 processor, and the data sampling device is AcqirisU1065A digitizer, and its real-time sampling rate can reach 8GSamples / s. Header data sampling devices include measuring wheel encoders and QSB-M acquisition devices. The multi-thread data acquisition system is divided into 4 threads, and the synchronous control flow chart of the 4-thread data acquisition system is as follows: figure 1 As shown, the four threads work independently of each other in a cyclic form according to the control signal during the data acquisition and writing process. Among them, the radar data collection task is completed by thread 1 and thread 2, the header file data collection task is completed by thread 3, and the data writing task is completed by thread 4. Because the Labview development environment has its i...

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Abstract

The invention relates to a multithreading data collection system synchronous control method under a key control mode and belongs to the technical field of ground penetrating radar detection. The method comprises previously building a key control variable to serve as an information interaction carrier between independent routes with other two control variables, carrying out Boolean operation on three control variables in each route respectively, using results as the synchronous control signals of the routes, and achieving multithreading synchronous control under the mode through evaluations of the control variables and corresponding criterion functions. In addition, all data can be stored through preset criterion functions written into routes. The multithreading data collection system synchronous control method can achieve the control function of a multithreading data collection system of a ground penetrating radar based on the computer control theory.

Description

technical field [0001] The invention belongs to the technical field of ground penetrating radar detection, in particular to a method for information interaction and synchronous control among multiple independent threads in a ground penetrating radar multi-threaded data acquisition system under button control mode, which realizes the control function of the acquisition system . Background technique [0002] Ground Penetrating Radar (GPR) is a fast, efficient and nondestructive geophysical prospecting method. The data acquisition system of traditional ground penetrating radar equipment usually adopts the equivalent sampling method, which has a low sampling speed (the number of pulses transmitted and received per second is only 50), and has relatively low hardware requirements, and can be completed by a single thread Sample work. With the increasing demand for rapid radar detection, a single thread can no longer meet the high sampling rate (the number of pulses transmitted an...

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Application Information

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IPC IPC(8): G05B19/418
Inventor 胡振琪许献磊余洋曾纪勇
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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