Multi-thread data acquisition system synchronization control method in acquisition time control mode
A technology of data acquisition system and acquisition thread, which is applied in the field of engineering detection of ground penetrating radar technology, and can solve the problems of low hardware requirements and low sampling speed
Active Publication Date: 2014-08-13
CHINA UNIV OF MINING & TECH (BEIJING) +5
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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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[0013] 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:
[0014] The computer CPU used in this embodiment is a 4-core I7 processor, and the radar data sampling device is an 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 process 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 t...
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The invention relates to a multi-thread data acquisition system synchronization control method in an acquisition time control mode, and belongs to the ground penetrating radar detection technology field. The method comprises the following steps: three time control variables (hour, minute, second) are established as a preset acquisition time and are inputted into a timer; a timing result with other two control variables serve as an information interaction carrier among independent threads and carry out a Boolean operation, and a result of the Boolean operation serves as a synchronization control signal of different threads; the multi-thread synchronization control in the mode is realized through a control variable assignment and a corresponding criterion function; and furthermore, a preset criterion function of the threads is written in so as to realize storage of all acquisition data. The method of the invention is based on the computer control theory, and the control function of the ground penetrating radar multi-thread acquisition system is realized.
Description
technical field [0001] The invention belongs to the field of engineering detection of ground penetrating radar technology, in particular to a method for information interaction and synchronous control among multiple independent threads in a multi-threaded data acquisition system of ground penetrating radar under button control mode, 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 number of pul...
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IPC IPC(8): G05B19/042
Inventor 彭苏萍许献磊杨峰杜翠彭猛
Owner CHINA UNIV OF MINING & TECH (BEIJING)