Acquisition method of multi-channel analog signal acquisition system with automatic compensation function
A signal acquisition system and automatic compensation technology, applied in measuring devices, instruments, measuring electricity and other directions, to prevent mutual interference, real-time detection of amplitude automatic compensation, and improve amplitude accuracy.
Active Publication Date: 2016-03-23
SANDTEK SEMICON TECH (SHANGHAI) LTD
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[0003] In order to solve the problem of real-time acquisition of high-precision amplitude of multi-channel analog signals and precise timing when the threshold value is exceeded, the present invention provides an acquisition method of a multi-channel analog signal acquisition system with automatic compensation function
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[0037] The architecture of the acquisition method of the multi-channel analog signal acquisition system with automatic compensation function of the present invention will be described in detail below in conjunction with the accompanying drawings, but this does not constitute a limitation to the present invention.
[0038] A design scheme of a multi-channel analog signal acquisition system with automatic compensation function of the present invention:
[0039] According to the requirements of multi-channel analog signal acquisition system with automatic compensation function, including "multi-channel analog signal acquisition board with automatic compensation function", the number of analog signal acquisition channels can be determined according to the design area of the board According to the PCI long card specification and the portable requirements of the PC104Plus interface board, generally 24 analog signals are selected for parallel processing. If it is necessary to simul...
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The invention provides an acquisition method implemented by a multi-channel analog signal acquisition system with an automatic compensation function. The acquisition system is based on corresponding functional modules and is provided with an analog signal acquisition and threshold exceeding precision timing program with the automatic compensation function, a drive program and a test program; the analog signal acquisition and threshold exceeding precision timing program performs automatic compensation after boards acquire multi-channel analog signals, judges threshold exceeding states of the signals after the signals are temporarily stored, and notifies the drive program of processing results; and the test program detects data acquisition notifications of a drive and reads acquired analog signal data. The acquisition method implemented by the multi-channel analog signal acquisition system with the automatic compensation function has the advantages that a configurable real-time signal amplitude detection function and the automatic amplitude value compensation function can be realized, detected threshold exceeding information can be precisely timed, and the acquisition method can be used for analyzing influencing factors and abnormal factors in industrial production or scientific research.
Description
technical field [0001] The invention belongs to the field of data acquisition, and in particular relates to an acquisition method of a multi-channel analog signal acquisition system with an automatic compensation function. Background technique [0002] In the process of modern industrial production and scientific research, it is often necessary to record some analog signals in the process of production and research, requiring high-precision amplitude acquisition. Due to the influence of various factors, there are phenomena such as "zero drift" and "amplitude scaling" when collecting analog signals, which often require users to perform corresponding data processing after collecting data to obtain more accurate signal amplitude information. At the same time, in some applications, it is necessary to set a threshold value for some analog signals, and accurately record the analog signal exceeding the threshold value during the work process (including the process from low to high ...
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IPC IPC(8): G01R31/00
Inventor 胡剑凌邵雷郑攀
Owner SANDTEK SEMICON TECH (SHANGHAI) LTD