Calibration system and method for voltage amplitude, amplitude-frequency characteristic and scanning speed of medical electrocardiosignal monitoring equipment

Abstract

The invention discloses a system and a method for calibrating voltage amplitude, amplitude-frequency characteristics and scanning speed of medical electrocardiosignal monitoring equipment. The method comprises the following steps of: placing a transparent graduated scale with a scale on a screen of the monitoring equipment; standard square wave signals, sine wave signals or electrocardiosignals required by regulations are input into the monitoring equipment, and the input waveform is displayed on a screen of the monitoring equipment; freezing the waveform on the screen of the monitoring equipment, and shooting the screen of the multi-parameter monitor by utilizing shooting equipment to obtain a composite graph of the waveform and the transparent graduated scale; image analysis software is utilized to obtain waveform signal voltage amplitude, amplitude-frequency characteristics and scanning speed in the composite graph. According to the invention, the transparent graduated scale is arranged above the screen of the monitoring equipment, waveforms on the screen and the graduated scale are simultaneously acquired in a photographing or recording mode, and then image processing is carried out by using computer software, so that measured data are more visual and clearer, the measurement precision is improved, and the requirement of tracing to a higher standard is met.