Noise suppression method used in micro-electro-mechanical product current acquisition process

Abstract

The invention relates to the technical field of micro-electro-mechanical product measurement and provides a noise suppression method used in the micro-electro-mechanical product current acquisition process.The method includes the steps that according to a control instruction of a main control board, information communication is built between a data acquisition card and a current acquisition card, and signal synchronization is operated between the data acquisition card and the current acquisition card; when current acquisition instruction information of the data acquisition card is received, the current state of an information communication channel is set to be a silent state; when the information communication channel is in the silent state, the data acquisition card controls a current acquisition moment of the current acquisition card according to a state control signal, and the current acquisition card acquires current data at the current acquisition moment and denoise the current data; the denoised current data is sent to the main control board, so that the current acquisition moment is accurately controlled through the state control signal, and synchronous moment of the current acquisition card and the data acquisition card is improved.Besides, interference in the current acquisition process is avoided, and accuracy of the acquired current data is improved.

Description

technical field [0001] The invention belongs to the technical field of measurement of micro-electromechanical products, and in particular relates to a method for suppressing noise during the current collection process of micro-electromechanical products. Background technique [0002] In the measurement process of micro-electromechanical products, it is necessary to test the current value of the product. Among them, the current collection is completed by a special current collection card, and the reading and writing of the product is realized by a special data collection card. [0003] During the measurement process, the current of micro-electromechanical products is usually relatively weak, and the current acquisition card is easily disturbed by various external noises during the acquisition process, which makes the current value collected by the current acquisition card deviate from the actual current value. Further influence the measurement results of MEMS products. Cont...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a noise suppression method in the current acquisition process of micro-electro-mechanical products, aiming at solving the problem that the current of micro-electro-mechanical products in the prior art is usually relatively weak, and the current acquisition card is easily affected by various external noises during the acquisition process. The interference of the current acquisition card makes the current value collected by the current acquisition card deviate greatly from the actual current value

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