NTC temperature measurement circuit, breathing machine and breathing machine power-on self-test method

Abstract

The invention discloses an NTC temperature measurement circuit, a breathing machine and a breathing machine power-on self-test method. The NTC temperature measurement circuit comprises a temperature measurement module, a switch module, a control module and a detection module, the control module is electrically connected with the temperature measurement module, the detection module and the switch module respectively; the switch module is electrically connected with the temperature measurement module and the detection module. The temperature measurement module is used for monitoring the temperature of a measured part in the heating loop and obtaining first temperature data; the switch module is used for switching on / off between the temperature measurement module and the detection module according to the enable signal outputted by the control module; the detection module is used for correcting the temperature of the temperature detection circuit and obtaining second temperature data; the control module is used for acquiring the first temperature data and adjusting the temperature of the measured part in the heating loop according to the first temperature data, and is used for acquiring the second temperature data and judging the accuracy of temperature measurement according to the second temperature data. According to the invention, the power-on self-test is realized, the accuracy of temperature measurement is ensured, and the detection cost is reduced.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to an NTC temperature measuring circuit, a ventilator and a self-checking method for starting the ventilator. Background technique [0002] In modern clinical medicine, the ventilator, as an effective means of artificially replacing the spontaneous ventilation function, has been widely used in respiratory failure caused by various reasons, anesthesia respiratory management during major surgery, respiratory support treatment and emergency resuscitation. It occupies a very important position in the field of modern medicine. Ventilator is a vital medical equipment that can prevent and treat respiratory failure, reduce complications, save and prolong the life of patients. [0003] The ventilator is a negative temperature coefficient (Negative Temperature Coefficient, NTC) thermistor temperature measurement product. In order to ensure the accuracy of the temperature measuremen...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a NTC temperature measuring circuit, a ventilator and a ventilator power-on self-check method, to solve the problem that the detection cost of the NTC temperature measuring circuit of the existing ventilator is relatively high and the accuracy is relatively high. non-guaranteed issues

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