Medical breathing carbon dioxide measurement system

Abstract

A medical breathing carbon dioxide detection system comprises light source and an air chamber, the air chamber is used for gas (to be measured) to pass through, and the light source is used for illuminating the air chamber to form an optical path. And further comprises a chopping wheel disk, a motor, a detector and a processor, the chopping wheel disk is provided with a plurality of measurement windows, one of which is used for encapsulating the standard gas with known concentration, the motor is used for driving the chopping wheel disk which is arranged on the optical path, the single opticalpath is divided into a plurality of measurement channels; the detector is used for acquiring the signal on the measurement channels and sending the signal to the processor for processing; the processor is also used for controlling the light source. Due to a plurality of measurement channels require only one detector, the cost is reduced, when performing zero point correction, the standard gas with known concentration is accorded with without the introduction of external air as the zero reference point, the impact of the zero deviation caused by external zero reference gas on the measurementis avoided, the operation free of zero correction function is realized, and the stability of the measurement is improved.

Description

technical field [0001] The present application relates to the medical field, in particular to a medical breathing carbon dioxide detection system. Background technique [0002] Medical respiratory carbon dioxide monitoring is one of the key parameters in modern clinical operations and intensive care. It can be applied to multi-parameter respiratory gas monitors, ventilators, anesthesia machines and special monitors for breathing gas. Among them, the medical respiratory heart carbon dioxide monitoring technology is Among them, the key core technology, the medical respiratory carbon dioxide measurement technology currently used in the above-mentioned system usually adopts the technology of infrared spectrum absorption, and there are side-stream and mainstream implementation methods, all of which need to carry out zero-reference input zero-calibration operation to achieve accurate Measurement. [0003] At present, common medical carbon dioxide gas measurement systems, such as ...

AI Technical Summary

Problems solved by technology

[0004] At present, medical respiratory carbon dioxide detection requires two detectors to form two signal amplification channels, which doubles the cost, and the difference between the two channels will also increase the measurement error, requiring regular zero calibration operations, which is inconvenient to use.

Images