Air pressure detection system for electric infusion pump and method thereof

Abstract

The invention provides an air pressure detection system for an electric infusion pump and a method thereof, and the system comprises a pressure sensor which is used for monitoring a to-be-detected airpressure environment, the pressure sensor is connected to an ADC module through a filter circuit, the ADC module is connected to an MCU, and the filter circuit is a five-order Butterworth filter circuit. According to the air pressure detection method provided by the invention, N continuously obtained sampling values are used as a queue T, the length of the queue is fixed to be N, new data adoptedeach time is put into the tail of the queue, primary data at the head of the original queue is removed, and arithmetic average operation is carried out on the N data in the queue to obtain a new filtering result. The air pressure detection system of the electric infusion pump based on the field of medical apparatus and instruments has the advantages that the air pressure monitoring time lag is little, the monitoring is accurate, the rotation of the peristaltic pump can be aimed, and the noise is effectively resisted.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to an air pressure detection system and method for an electric infusion pump. Background technique [0002] Nephrology, renal dialysis and CRRT all require the use of electric infusion pumps to precisely control the infusion volume and infusion speed. In this case, multiple electric pumps are often linked. Due to direct contact with the human body, the equipment needs to be monitored for pressure in order to monitor the working status of the equipment in real time and judge whether the equipment and pipeline passages are operating normally, especially the electric pump that directly acts on the human body. figure 1 The air bubble sensor AD1, the blood leakage sensor LD1, the blood collection PACC, the heparin pump SP, the arterial pressure PA, the venous pressure PV, the blood leakage sensor LD2, the waste liquid pump pressure P1ST, the waste liquid pump FP, the replacement liquid...

AI Technical Summary

Problems solved by technology

[0005] The shortcoming of the current existing technology is mainly that the first-order RC filter circuit commonly used in the industry is applied, combined with commonly used digital filter algorithms, and there is no industry-specific optimization for electric infusion pumps.

Although the existing technology can obtain a signal that is more stable and less noisy than before filtering, the effect of the low-frequency pulse and the resulting noise generated by the continuous rotation of the peristaltic pump is not very satisfactory.

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