Adaptive heating device for automatic peritoneal dialysis machine and control method

Abstract

The invention discloses an adaptive heating device for an automatic peritoneal dialysis machine and a control method. The control method comprises: setting the preset temperature of a dialysate; comparing the dialysate temperature detected by a temperature sensor with the preset temperature to generate a temperature difference E, wherein the temperature difference E varies with time and has a change rate EC; causing a controller to convert to a corresponding PWM Control parameter by a control algorithm according to the temperature difference E at each moment and the temperature difference change rate EC at the moment; controlling a relay to adjust the power duty ratio of a heating device in real time according to the PWM control parameter at this moment so as to control the heating power of the heating device at this moment, and further to control the temperature and the heating rate of the dialysate. The method automatically adjusts the heating power of the heating device according tothe real-time temperature state of the dialysate, achieves high heating efficiency and high temperature control precision. The power of the heating device is subjected to variable frequency control,and is not required to be powered on and off repeatedly during operation, thereby achieving low power loss.

Description

technical field [0001] The invention belongs to the field of medical electronic equipment, and in particular relates to an adaptive heating device and a control method for an automatic peritoneal dialysis machine. Background technique [0002] The peritoneal dialysis solution needs to be heated to a suitable temperature before being injected into the human body, such as about 37°C, so as to avoid the temperature of the dialysis solution being too low or too high and causing discomfort to the human body. Therefore, the temperature of the dialysis solution in the peritoneal dialysis bag is a very important treatment parameter. Monitoring of the dialysate temperature is particularly important. [0003] Usually, for manual dialysis, the dialysate will be put into the incubator for several hours before infusion, and will be taken out when the temperature reaches a suitable temperature, and the infusion will be completed as soon as possible, but when using automatic peritoneal dia...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an adaptive heating device and control method for automatic peritoneal dialysis machines, to solve the problems of low temperature control accuracy and large power loss in the current heating and temperature control methods of automatic peritoneal dialysis equipment

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