Pressure detection method for injection pump
A detection method and a technology of a syringe pump, which are applied in the measurement of pressure difference between multiple valves, hypodermic injection equipment, and measurement of fluid pressure, etc., can solve problems such as inaccurate pressure detection, and achieve the effect of solving inaccurate pressure detection
Active Publication Date: 2012-10-10
BEIJING AEONMED
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[0005] The technical problem to be solved by the present invention is to provide a pressure detection method of a syringe pump, introduce ΔP into the calculation of pressure detection, and then obtain an accurate real-time pressure value of the pipeline through zero pressure, thereby solving the problem of inaccurate pressure detection question
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[0026] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0027] figure 1 is a flowchart of the method according to the invention.
[0028] Such as figure 1 As shown, the method includes the following steps:
[0029] S102, under the condition that the syringe is filled with liquid and the infusion line is opened, perform pressure sampling and obtain a zero-point voltage value RP corresponding to the sampled pressure value;
[0030] S104, connect the water outlet end of the infusion pipeline to the pressure gauge, sample a plurality of different pressures that vary linearly in the infusion pipeline, and obtain the first voltage value P(1) to the ith corresponding to the multiple different pressures the voltage value P(i)...
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The invention provides a pressure detection method for an injection pump. The method comprises the following steps: 1, under the condition that an injector is filled with liquid and a liquid delivery pipe is opened, sampling pressure and acquiring a zero voltage value RP corresponding to a sampled pressure value; 2, connecting a water outlet end of the liquid delivery pipe to a pressure gauge, sampling a plurality of linear variable different pressures in the liquid delivery pipe, and acquiring a first voltage value P (1) to an ith voltage value P (i) corresponding to the plurality of different pressures; and 3, calculating a step length voltage value delta P by the zero voltage value RP, the first voltage value P (1) to the ith voltage value P (i) according to a predefined algorithm. Therefore, by introducing the delta P in the calculation of pressure detection, the method can acquire the voltage value RP corresponding to the zero voltage through the sampling of real-time pressure ofthe opened pipe, and then acquire accurate real-time pressure value of the pipe through the zero voltage so as to solve the problem that the pressure detection is inaccurate.
Description
technical field [0001] The present invention relates to a pressure detection system, in particular to a pressure detection method of a syringe pump. Background technique [0002] At present, on the syringe pump, there are usually two methods for monitoring the pressure value: [0003] The sensor is placed in the infusion line to monitor the data in real time. The advantage of this method is that the monitored data is accurate, does not need to be processed, and can reflect the current pressure value in real time. It is processed, while the sensor device is placed outside the machine, which also brings inconvenience to the safety protection and transportation of the machine; and [0004] The sensor is placed in the injection tip or in the internal transmission mechanism to monitor the data in real time. The advantage of this method is that there is no interference problem and the signal is stable. The disadvantage is that the monitored data is not the real data of the patien...
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IPC IPC(8): G01L13/00G01L19/12A61M5/00
Inventor 傅军
Owner BEIJING AEONMED