Adaptive heating device for automatic peritoneal dialysis machine and control method

A peritoneal dialysis machine and heating control technology, applied in non-electric variable control, temperature control, control/regulation system and other directions, can solve the problems of low temperature control accuracy and large power loss, and achieve high temperature control accuracy and low power loss. , the effect of high heating efficiency

Inactive Publication Date: 2018-06-01
716TH RES INST OF CHINA SHIPBUILDING INDAL CORP +1
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  • Claims
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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

Method used

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  • Adaptive heating device for automatic peritoneal dialysis machine and control method
  • Adaptive heating device for automatic peritoneal dialysis machine and control method

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Embodiment

[0043] combine Figure 1-2 , the preset temperature is 37°C, the initial temperature of the dialysate is 25°C, the dialysate is placed on the heating device, the power supply of the heating device is 220V AC, the upper limit temperature of the heating device is set to 60°C, and the critical temperature difference Te is 3°C. The specific steps of the automatic peritoneal dialysis equipment heating and temperature control method are as follows:

[0044] 1) The dialysate temperature data detected by the temperature sensor is sent to the controller, and the controller calculates the difference E between the preset temperature and the dialysate temperature at this time and the temperature difference change rate EC;

[0045] 2) The controller obtains the PWM control parameter value through the control algorithm according to E and EC, and the PWM control parameter value is obtained according to the following process:

[0046] 2-1) When the absolute value of E > 3°C, calculate the P...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/20
CPCG05D23/20
Inventor 葛世强陈大鹏洪草根秦广乐陈骥郝玉哲李勇宋中仓桑楠李敬东段全晓梁钊铭万胤刘岩张振
Owner 716TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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