Uterine myoelectricity burst wave signal simulator

Abstract

The invention discloses a uterine myoelectricity burst wave signal simulator, and belongs to the technical field of signal simulation. According to the characteristics of actual human body uterus electromyographic signals, two paths of input sinusoidal signals are subjected to rectification and amplitude modulation operation, and then processed signals pass through an operational amplifier circuit with the gain smaller than 1, so that initial burst wave signals are obtained; input signals are sampled by a gain automatic control system; and on the basis of the parameters of all parts of a current simulator, a gain compensation value of the operational amplifier circuit is calculated according to a preset input and output relationship. By adjusting a feedback resistor and changing the gain of the operational amplifier circuit, the amplitude of burst waves output by the simulator can be changed according to the amplitude of the input signals, so that the purpose of controlling output signals through the input signals is achieved. The burst wave signal output by the simulator has the advantage of controllable amplitude and frequency.

Description

technical field [0001] The invention belongs to the technical field of signal simulation, and relates to a uterine myoelectric burst wave signal simulator. Background technique [0002] The number of miscarriages, premature births and birth defects has increased in recent decades. According to the data released by the World Health Organization, about 1,000 women in the world die every day from complications related to pregnancy or childbirth, and most of these complications are preventable. Preterm birth is the most common and immediate cause of neonatal death. Whether it is for the mother or the fetus, it is particularly important to monitor the uterine activity of the pregnant woman during pregnancy and delivery. [0003] Uterine contraction is caused by electrical activity in the form of an action potential, i.e. uterine myoelectricity, which propagates through myometrium cells at a certain speed, and the propagation of a sufficient number of cells will cause a coordina...

AI Technical Summary

Problems solved by technology

However, when conducting related scientific research and equipment development, debugging, and testing, there is a lack of controllable uterine myoelectric signals as a reference, resulting in the inability of the method proposed in the scientific research to perform accurate quantitative analysis at the hardware level, and the equipment cannot be accurately quantitatively debugged and calibrated. and detection

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