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Synchronous control method of multithreading data acquisition system in acquisition times control mode

A data acquisition system and acquisition thread technology, applied in general control systems, control/regulation systems, adaptive control, etc., can solve problems such as low hardware requirements and low sampling speed, improve overall performance and speed up data access speed Effect

Inactive Publication Date: 2013-07-31
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

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  • Synchronous control method of multithreading data acquisition system in acquisition times control mode

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with accompanying drawing and specific embodiment, figure 1 Be the synchronous control flowchart of 4 threads data acquisition system of the present invention:

[0018] 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-threaded data acquisition system is divided into 4 threads, and the synchronous control flow chart of the multi-threaded data acquisition system is as follows: figure 1 As shown, the four threads work independently of each other in a circular form during the data collection 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 w...

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Abstract

The invention relates to a synchronous control method of a multithreading data acquisition system in an acquisition times control mode, and belongs to the technical field of ground penetrating radars. The method comprises the steps that a times integer variable for controlling data acquisition is pre-established; a value after addition processing and a value after division processing of the times integer variable are subjected to Boolean operation together with two control variables respectively; results of the Boolean operation serve as synchronous control signals of different threads; synchronous control of multithreading in the mode is achieved by criterion functions of the threads and assignments of the control variables; and all the acquisition data can be stored by the preset criterion functions written in the threads. According to the method, a control function of the ground penetrating radar multithreading acquisition system is achieved on the basis of a 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 mutually independent threads in a multi-thread data acquisition system of ground penetrating radar under the control mode of acquisition times, which realizes the control of the acquisition system Features. 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 numb...

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Application Information

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IPC IPC(8): G05B13/04G06F9/38
Inventor 许献磊胡振琪彭猛高杨
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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