Automatic gain-regulated output method for waveform drawing of multi-channel electrocardiograph

Abstract

The invention discloses an automatic gain-regulated output method for waveform drawing of a multi-channel electrocardiograph, which comprises the following steps: (1) detecting and calculating the voltage amplitude of an electrocardiographic waveform of each channel; (2) determining the magnitude of the automatic gain of the electrocardiographic waveform of each channel based on the magnitude of the voltage amplitude obtained in the step (1); (3) carrying out gain processing on an original signal of the electrocardiographic waveform of each channel based on the magnitude of the automatic gain; and (4) drawing the electrocardiographic waveforms obtained after gain processing on an interface, recording and outputting. The invention simultaneously meets the requirements for both interface displaying and recording and outputting, and can achieve a better balance between the both. When being used for an electrocardiograph with a large number of channels (e.g. 12 channels), the automatic gain-regulated output method provided by the invention can achieve a more obvious optimization effect.

Description

technical field [0001] The invention relates to a waveform adjustment method, in particular to a multi-channel electrocardiograph waveform drawing automatic gain adjustment output method. Background technique [0002] In the application of the electrocardiograph, the waveform detected by the electrocardiograph will be displayed on the interface on the one hand, and will be recorded and output by equipment such as a recorder on the other hand. When the results are recorded and output by equipment such as a recorder, the waveform is generally recorded according to the gain and speed set when the interface is displayed, that is, the interface drawing and waveform recording of the electrocardiograph use the same gain. In the current interface display gain setting, the automatic gain function of the electrocardiograph is generally used by the user for automatic adjustment. The realization of the automatic gain function is a relatively difficult problem. The current general prac...

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Problems solved by technology

Therefore, based on the above discussion, the current method of determining the automatic gain based on the drawing area of ​​each waveform must be changed, especially for electrocardiographs with a large number of channels (such as 12 channels), since the size of the automatic gain is limited by the drawing area The limit is greater, so the effect of waveform record output will be more seriously affected