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DC signal variance adaptive detection method and device

A self-adaptive detection, DC signal technology, applied in measuring devices, measuring electrical variables, instruments, etc., can solve the problems affecting the correctness and accuracy of DC signal change detection, and achieve the effect of stable and stable output

Active Publication Date: 2015-10-28
XUJI GRP +3
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for adaptive detection of DC signal variation to solve the problem that environmental and human factors affect the correctness and accuracy of DC signal variation detection, and to provide a detection device using the above method

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  • DC signal variance adaptive detection method and device
  • DC signal variance adaptive detection method and device
  • DC signal variance adaptive detection method and device

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Embodiment Construction

[0021] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0022] The DC signal variation adaptive detection method of the present invention includes at least three interdependent method operation and control modes, namely differential reference signal adaptive smooth adjustment, output signal negative feedback intervention adjustment, and adaptive adjustment state intelligent conversion logic, and their cooperation circuit. The automatic smooth adjustment follows to make the differential reference signal smoothly adjusted to be close to the original signal, ensuring the correct identification of the signal after the differential amplification of the circuit; the negative feedback of the output signal is continuously adjusted to further optimize the signal after the differential amplification, so that the output is stable and stable, and the output signal is controlled In the ideal output value; the i...

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Abstract

The invention discloses a DC signal variance adaptive detection method and a device. The method comprises the steps of conducting the adaptive smooth adjustment on reference signals and conducting the negative-feedback intervention and adjustment on output signals. Firstly, an original DC signal is tracked in real time to generate a reference signal in combination with the algorithm. After that, the reference signal and the original signal are subjected to differential amplification, and then an output signal is led in for adaptive feedback adjustment. In this way, the problem in the prior art that the correctness and the precision of the DC signal variance detection are influenced by environmental factors and human factors can be solved. The precise output of multiple-type and multiple-channel detection signals is enabled. The above method is suitable for original signals significantly affected by environmental factors and high in static output and small in variance.

Description

technical field [0001] The invention relates to a method and a device for self-adaptive detection of DC signal variation. Background technique [0002] The detection method of the DC signal variation is usually to use a fixed reference source or a manually adjusted reference source to perform differential amplification and post-processing with the original signal. For the signal measurement of the original DC signal itself with high output and greatly affected by external environmental factors, the environmental conditions must be strictly controlled for each detection to ensure that the environmental conditions for each detection are the same (such as the same temperature, humidity, pressure, etc. ) to ensure that the output of the original signal is consistent with the reference source for detection, or adjust the reference source to be close to the output signal for detection. This detection method has high requirements on the test environment, high detection cost, and h...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R17/00G01R29/00
Inventor 和红伟庄益诗王伟杰王胜辉刘畅邵秋华卢站芳曹瑞林王国玉梁东森李博
Owner XUJI GRP
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