Anaesthesia machine flow sensor calibration method and device

A flow sensor and anesthesia machine technology, applied in the field of anesthesia machines, can solve the problems of low work efficiency, low accuracy, large errors, etc., and achieve the effects of improving accuracy, overcoming measurement errors, and high work efficiency

Inactive Publication Date: 2014-07-02
BEIJING AEONMED
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  • Claims
  • Application Information

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Problems solved by technology

[0009] In order to overcome the defects of cumbersome operation process, low work efficiency, low accuracy rate, large error and difficulty in obtaining a set of voltage-flow data tables with differential or other regular flow values ​​in the above-mentioned method and d

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  • Anaesthesia machine flow sensor calibration method and device
  • Anaesthesia machine flow sensor calibration method and device
  • Anaesthesia machine flow sensor calibration method and device

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Embodiment Construction

[0040] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0041] figure 1 It is a schematic structural diagram of the calibration device for the flow sensor of an anesthesia machine provided by the specific embodiment of the present invention.

[0042] A calibration device for a flow sensor of an anesthesia machine includes an anesthesia machine 1 and a monitoring device 2. A calibration control unit 5 is provided inside the control board of the anesthesia machine 1, and the monitoring device 2 is a flow meter.

[0043]Preferably, the signal acquisition module of the calibration control unit 5 is provided with a flow signal filtering circuit 3 inside, and the flow signal filtering circuit 3 is connected to the calibration communication port on the anesthesia machine 1, and the calibration communication port and the monitoring device 2 communication port pa...

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Abstract

The invention discloses an anaesthesia machine flow sensor calibration method and device. The method includes the steps of connecting a monitoring device with a flow sensor in series, closing an exhalation valve, changing the opening degree of the exhalation valve according to the gradually-increasing/gradually-decreasing rule, conducting filtering on the values of monitored flow and the values of the voltage outputted by the flow sensor, reading and recording the monitored value and the value of the voltage outputted by the flow meter for each opening degree of the exhalation valve, generating voltage-flow data tables and the like, and obtaining a set of voltage-flow data tables by presetting a set of organized flow values through the table look-up or interpolation method, wherein the voltage-flow data tables include the flow meters conforming to the equal difference rule or other rules. In the method and device, filtering is adopted, accuracy of calibration is improved, calibration data are simplified into one-dimensional voltage data to be stored, and actual use of the data is facilitated; in addition, the calibration process is automatically completed through a preset program, and the work efficiency is high.

Description

technical field [0001] The invention relates to the field of anesthesia machines, in particular to a method for calibrating a flow sensor of an anesthesia machine using a one-dimensional linear interpolation algorithm and a device for realizing the method. Background technique [0002] The anesthesia machine is a device that sends anesthetics / agents into the patient's alveoli through a mechanical circuit to form a partial pressure of anesthetic gas. After the anesthetic diffuses in the blood, it directly inhibits the central nervous system, thereby producing an anesthesia effect. The flow sensor is a device that detects the flow signal and converts it into an electrical signal, and is used to detect the flow signal for the anesthesia machine to make a ventilation control plan. [0003] The accuracy of the flow sensor installed on the anesthesia machine is directly related to the accuracy of the detection values ​​of the breathing gas flow rate, tidal volume and ventilation v...

Claims

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Application Information

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IPC IPC(8): G01F25/00
Inventor 张志新
Owner BEIJING AEONMED
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