WO2015032325A1 - 麻醉机流量传感器的流量标定方法及系统 - Google Patents

麻醉机流量传感器的流量标定方法及系统 Download PDF

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WO2015032325A1
WO2015032325A1 PCT/CN2014/085839 CN2014085839W WO2015032325A1 WO 2015032325 A1 WO2015032325 A1 WO 2015032325A1 CN 2014085839 W CN2014085839 W CN 2014085839W WO 2015032325 A1 WO2015032325 A1 WO 2015032325A1
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flow
flow rate
calibration
anesthesia machine
point
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PCT/CN2014/085839
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English (en)
French (fr)
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华威
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北京谊安医疗系统股份有限公司
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Priority to EP14841706.6A priority Critical patent/EP3043158A4/en
Priority to EA201690477A priority patent/EA031782B1/ru
Priority to BR112016004538-6A priority patent/BR112016004538B1/pt
Publication of WO2015032325A1 publication Critical patent/WO2015032325A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/01—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes specially adapted for anaesthetising
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
    • G01F25/15—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters specially adapted for gas meters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/70—General characteristics of the apparatus with testing or calibration facilities
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2209/00—Ancillary equipment
    • A61M2209/02—Equipment for testing the apparatus

Definitions

  • the invention relates to the technical field of anesthesia machine, in particular to a flow calibration method and system for an anesthesia machine flow sensor.
  • the flow sensor is a key component for monitoring the inspiratory and expiratory flow on the anesthesia machine.
  • the anesthesia machine can measure the real-time inspiratory and expiratory flow rates, and calculate the exhalation and inspiration according to the inspiratory and expiratory flow rates.
  • the amount of tidal volume, so the accuracy of the flow sensor is of high importance.
  • the calibration method of the flow sensor adopts a multi-point calibration method, that is, gradually increasing the flow rate value from the zero point and recording the corresponding sampling voltage value. Since a large number of collection points need to be recorded every time, the calibration data reaches dozens, so there are defects such as long consumption time, inconvenient operation, and low efficiency.
  • the object of the present invention is to at least solve one of the above technical drawbacks.
  • the flow calibration method has the advantages of short time consumption and convenient use.
  • Another object of the present invention is to provide a flow calibration system for an anesthesia machine flow sensor.
  • an embodiment of the present invention provides a flow calibration method for an anesthesia machine flow sensor, comprising the steps of: gradually increasing a flow rate of a plurality of anesthesia machines, and collecting a voltage value of the flow sensor when a preset condition is met; Calculating the average voltage value of each anesthesia machine at multiple sampling points, and obtaining the default voltage curve of the flow sensor by the average voltage value of each anesthesia machine at a plurality of sampling points; dividing the default curve into N stages, And collecting N+1 calibration points in the N stages to collect voltage values of each calibration point, wherein the N is a positive integer greater than 1; and calculating the collected voltage value of each calibration point and the The voltage difference of the default voltage curve is used, and the flow rate of the anesthesia machine is accurately calibrated according to the voltage difference.
  • the calibration point is determined in a phased interval, and the flow rate of the other collection points is determined according to the voltage difference between the default voltage curve and the calibration point, thereby reducing the complexity of the calibration process and facilitating the user to use. At the same time, the accuracy of the calibration can be guaranteed.
  • the N stages are three stages, and the first stage is a flow point of 0 to 5 L/min, the second stage is a flow rate of 5 L/min to 20 L/min, and the third The stage is a flow rate of 20 L/min to a flow rate of 130 L/min.
  • the predetermined condition is that the flow rate of the anesthesia machine reaches an integral multiple of the preset flow rate.
  • the preset flow rates of the three stages are different.
  • the N+1 calibration points are four calibration points, and the four calibration points are a flow point of 0, a flow rate of 3 L/min, a flow rate of 12 L/min, and a flow rate of 30 L/. Min point.
  • another embodiment of the present invention provides a flow calibration system for an anesthesia machine flow sensor, comprising: an acquisition module, configured to gradually increase the flow rate of the plurality of anesthesia machines, and collect the flow sensor when the preset condition is met.
  • a calculation module for calculating an average voltage value of each anesthesia machine at a plurality of sampling points, and obtaining an average voltage value of the flow sensor through an average voltage value of each anesthesia machine at a plurality of sampling points; a module, configured to divide the default curve into N stages, and select N+1 calibration points in the N stages to collect voltage values of each calibration point, where N is a positive integer greater than 1; And a calibration module, configured to calculate a voltage difference between the collected voltage value of each calibration point and the default voltage curve, and accurately calibrate the flow rate of the anesthesia machine according to the voltage difference.
  • a system determines a calibration point in a phased interval and according to a default The voltage difference between the voltage curve and the calibration point determines the flow rate of other collection points, thus reducing the complexity of the calibration process, facilitating the user's use, and also ensuring the accuracy of the calibration.
  • the N stages are three stages, and the first stage is a flow point of 0 to 5 L/min, the second stage is a flow rate of 5 L/min to 20 L/min, and the third The stage is a flow rate of 20 L/min to a flow rate of 130 L/min.
  • the predetermined condition is that the flow rate of the anesthesia machine reaches an integral multiple of the preset flow rate.
  • the preset flow rates of the three stages are different.
  • the N+1 calibration points are four calibration points, and the four calibration points are a flow point of 0, a flow rate of 3 L/min, a flow rate of 12 L/min, and a flow rate of 30 L/. Min point.
  • FIG. 1 is a flow chart of a flow calibration method of an anesthesia machine flow sensor in accordance with one embodiment of the present invention
  • FIG. 2 is a flow chart of calibrating a default voltage curve in accordance with one embodiment of the present invention.
  • FIG. 3 is a flow rate and voltage curve of a flow sensor in accordance with one embodiment of the present invention.
  • FIG. 4 is a flow chart for calibrating the flow rate of each anesthesia machine flow sensor in accordance with one embodiment of the present invention
  • FIG. 5 is a block diagram showing the structure of a flow calibration system for an anesthesia machine flow sensor in accordance with one embodiment of the present invention.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • Connected, or integrally connected can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components.
  • the specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.
  • a flow calibration method for an anesthesia machine flow sensor includes the following steps:
  • step 101 the flow rates of the plurality of anesthesia machines are gradually increased, and the voltage values of the flow sensors are collected when the preset conditions are met.
  • the predetermined condition is that the flow rate of the anesthesia machine reaches an integral multiple of the preset flow rate.
  • the preset flow rates of the three stages are different.
  • the preset flow rate of the first stage is 0.5 L/min
  • the preset flow rate of the second stage is 1 L/min
  • the preset flow rate of the third stage is 10 L/min.
  • step 102 the average voltage value of each anesthesia machine at a plurality of sampling points is calculated, and the average voltage value of each anesthesia machine at a plurality of sampling points is obtained to obtain a default voltage curve of the flow sensor.
  • Step 103 Divide the default curve into N stages, and select N+1 calibration points in N stages to collect the voltage value of each calibration point, where N is a positive integer greater than 1.
  • the N stages are three stages, and the first stage is a flow point of 0 to 5 L/min, the second stage is a flow rate of 5 L/min to 20 L/min, and the third stage is Flow rate 20L/min Point to the flow rate of 130L/min.
  • the N+1 calibration points are four calibration points, and the four calibration points are a flow velocity of 0, a flow rate of 3 L/min, a flow rate of 12 L/min, and a flow rate of 30 L/min.
  • Step 104 Calculate the voltage difference between the collected voltage value of each calibration point and the default voltage curve, and accurately calibrate the flow rate of the anesthesia machine according to the voltage difference.
  • FIG. 2 is a flow chart of calibrating a default voltage curve in accordance with one embodiment of the present invention.
  • the flow sensor of each anesthesia machine in multiple anesthesia machines is multi-point calibrated, ranging from 0L/min to 130L/min, the flow sensor is ventilated, and the flow meter is used to monitor the flow and monitor the flow.
  • Corresponding flow sensor voltage value for example, when the air flow is 3L/min, the monitored voltage value is 1.998v, and the recorded flow rate and the corresponding voltage value flow rate are gradually increased from 0L/min to 5L/min. When the increase is 0.5 L/min, the flow rate and the corresponding voltage value are recorded.
  • a total of 11 pairs of collection points were recorded in the range of 0 L/min to 5 L/min.
  • the flow rate was gradually increased from 5 L/min to 20 L/min, and the flow rate and the corresponding voltage value were recorded each time 1 L/min was increased, and 15 pairs of collection points were recorded in the range.
  • the flow rate and the corresponding voltage value are recorded by increasing the flow rate by 10 L/min each time in the range of 20 L/min to 130 L/min.
  • a total of 11 pairs of collection points were recorded within this range.
  • a total of 37 pairs of acquisition points were recorded in the range of 0 L/min to 130 L/min, and the 37 collection points were connected to form a default voltage curve.
  • the flow rate and voltage curves of the flow sensor are shown in FIG.
  • 0 L/min to 130 L/min is divided into three phases, and four calibration points are selected in three phases.
  • the three stages are the first stage from 0 to 5 L/min, the second stage from 5 L/min to 20 L/min, and the third stage from 20 L/min to 130 L/min.
  • FIG. 4 is a flow chart for calibrating the flow rate of each anesthesia machine flow sensor in accordance with one embodiment of the present invention.
  • 4 points are calibrated, and the calibration method of each point is the same as the calibration method of the calibration point in the default curve.
  • the first calibration point is the point where the flow rate is 0, and the second calibration point is 0 point to 5L/
  • the middle value of min that is, the point where the flow rate is 3L/min
  • the third calibration point is the intermediate value of 5L/min to 20L/min, that is, the flow rate is 12L/min
  • the fourth calibration point is 30L/min.
  • the representative value in 130L/min that is, the point where the flow rate is 30L/min, is used to perform the translation correction of the data in this stage in the three stages by using the four calibration points, respectively, and obtain the data points used in all real-time calculations.
  • the point where the flow rate is 0 corresponds to the flow sensor's voltage value of 2.100v, and the new flow sensor is calibrated at a flow rate of 0.
  • the point corresponding to the flow sensor voltage value is 2.098v, then replace 2.100v with 2.098v; in the default curve, the flow rate is 3L/min corresponding to the flow sensor voltage value is 1.998v, the new flow sensor is marked Timing, the flow rate of 3L / min corresponds to the flow sensor voltage value of 1.980v, then calculate the difference between the two is 0.020v, that is (1.998v-1.980v), use the difference to correct 0.5L / min to 10 points of 5L/min, that is, the voltage value of these 10 points in the default curve is added to 0.020v, which is the same as the calibration value of the new flow sensor. Correct the voltage value of 5L/min to 20L/min and 30L/min. Voltage value up to 130L/min. The flow rate is obtained based on the voltage value, thereby obtaining a flow rate.
  • the calibration point is determined in a phased interval, and the flow rate of the other collection points is determined according to the voltage difference between the default voltage curve and the calibration point, thereby reducing the complexity of the calibration process and facilitating the user to use. At the same time, the accuracy of the calibration can be guaranteed.
  • FIG. 5 is a block diagram showing the structure of a flow calibration system for an anesthesia machine flow sensor in accordance with one embodiment of the present invention.
  • the flow calibration system of the anesthesia machine flow sensor includes an acquisition module 100, a calculation module 200, a segmentation module 300, and a calibration module 400.
  • the collecting module 100 is configured to gradually increase the flow rate of the plurality of anesthesia machines and collect the voltage value of the flow sensor when the preset condition is met.
  • the preset condition is that the flow rate of the anesthesia machine reaches an integral multiple of the preset flow rate.
  • the calculation module 200 is configured to calculate an average voltage value of each anesthesia machine at a plurality of sampling points, and obtain an average voltage curve of the flow sensor through an average voltage value of each anesthesia machine at a plurality of sampling points.
  • the segmentation module 300 is configured to divide the default curve into N stages, and select N+1 calibration points in N stages to collect the voltage value of each calibration point, where N is a positive integer greater than 1.
  • N is 3, which is divided into three stages and four points are calibrated at the stage, and the first stage is a flow point of 0 to 5 L/min, and the second stage is a flow rate of 5 L/min.
  • the point to 20 L/min and the third stage are the flow rate of 20 L/min to the flow rate of 130 L/min.
  • the N+1 calibration points are four calibration points, wherein the four calibration points are the flow point 0 point, the flow rate 3L/min point, the flow rate 12L/min point, and the flow rate 30L/min point.
  • the preset flow rates of the three stages are different, the preset flow rate of the first stage is 0.5 L/min, and the preset flow rate of the second stage is 1 L/min. Let the flow rate be 10 L/min.
  • the calibration module 400 is configured to calculate the voltage difference between the collected voltage value of each calibration point and the default voltage curve, and accurately calibrate the flow rate of the anesthesia machine according to the voltage difference.
  • the flow sensor of each anesthesia machine of the plurality of anesthesia machines is multi-point calibrated in the range of 0 L/min to 130 L/min by the acquisition module 100, and the flow sensor is collected when the flow sensor is ventilated.
  • the voltage value is, for example, when the airflow of 3 L/min is passed, the voltage value collected by the acquisition module 100 is 1.998 V, and the flow rate and the corresponding voltage value are recorded.
  • the flow rate is gradually increased from 0 L/min to 5 L/min, and each time the increase is 0.5 L/min, 11 pairs of collection points are recorded in the range of the recorded flow rate and the corresponding voltage value from 0 L/min to 5 L/min.
  • the flow rate is gradually increased from 5L/min to 20L/min.
  • the flow rate and the corresponding voltage value are recorded.
  • 15 pairs of collection points are recorded in the same way.
  • the flow rate and the corresponding voltage value were collected and recorded.
  • a total of 11 pairs of acquisition points were recorded in the range of 0 L/min to 130 L/min.
  • the calculation module 200 connects the 37 collection points to obtain a default voltage curve, and the flow rate and voltage curve of the flow sensor are as shown in FIG.
  • the segmentation module 300 divides the flow rate from 0 L/min to 130 L/min into three phases and selects four calibration points in three phases.
  • the three stages are the first stage from 0 to 5 L/min, the second stage from 5 L/min to 20 L/min, and the third stage from 20 L/min to 130 L/min.
  • the calibration module 400 selects four calibration points in three stages, the first calibration point is a point with a flow rate of 0, and the second calibration point takes an intermediate value of 0 to 5 L/min. That is, the flow rate is 3L/min, the third calibration point is the intermediate value of 5L/min to 20L/min, that is, the flow rate is 12L/min, and the fourth calibration point is 30L/min to 130L/min.
  • the representative value that is, the point where the flow rate is 30 L/min, is used to perform the translation correction of the data of this stage in the three stages by using the four calibration points, respectively, and obtain the data points used for all real-time calculations.
  • the point where the flow rate is 0 corresponds to the voltage value of the flow sensor is 2.100v.
  • the point where the flow rate is 0 corresponds to the voltage value of the flow sensor is 2.098v, then 2.098v is used.
  • the flow rate is 3L/min.
  • the corresponding flow sensor voltage value is 1.998v.
  • the flow rate is 3L/min. 1.980v, then calculate the difference between 0.020v, ie (1.998v-1.980v), use the difference to correct 10 points from 0.5L/min to 5L/min, that is, the 10 in the default curve.
  • the voltage value of the point is added to 0.020v as a new flow sensing
  • the calibration value of the device For the same reason, the voltage value of 5L/min to 20L/min and the voltage value of 30L/min to 130L/min are corrected.
  • the calibration module 400 obtains a flow rate based on the voltage value, and obtains the flow rate of the anesthesia machine according to the flow rate, time, and the like.
  • the calibration point is determined in a phased interval, and the flow rate of the other collection points is determined according to the voltage difference between the default voltage curve and the calibration point, thereby reducing the complexity of the calibration process and facilitating the user to use. At the same time, the accuracy of the calibration can be guaranteed.

Abstract

一种麻醉机流量传感器的流量标定方法及系统，其中方法包括以下步骤：逐步递增多个麻醉机的流速，当满足预设条件时采集流量传感器的电压值（S101）；计算每个麻醉机的多个采样点的平均电压值，并通过每个麻醉机在多个采样点的平均电压值以获得流量传感器的默认电压曲线（S102）；将默认电压曲线分为3个阶段，并在3个阶段选取4个标定点采集每个标定点的电压值（S103）；计算每个标定点的采集电压值和默认电压曲线的电压差值，并根据电压差值准确标定麻醉机的流量（S104）。根据该方法，通过在分阶段区间内确定标定点，并根据默认电压曲线与标定点的电压差值确定其他采集点的流量，减少标定过程的复杂程度，还可以保证标定的准确性。

Description

麻醉机流量传感器的流量标定方法及系统
本专利申请要求于2013年9月3日提交的、申请号为201310395676.0、申请人为北京谊安医疗系统股份有限公司、发明名称为“麻醉机流量传感器的流量标定方法及系统”的中国专利申请的优先权，该申请的全文以引用的方式并入本申请中。
技术领域
本发明涉及麻醉机技术领域，特别涉及一种麻醉机流量传感器的流量标定方法及系统。
背景技术
流量传感器在麻醉机上是监测吸气和呼气流量的关键部件，麻醉机在通气过程中，能够测量出实时吸气和呼气流速，并根据吸气和呼气流速计算出呼气与吸气潮气量，所以流量传感器的准确程度具有很高的重要性。
为了保证流量传感器的测量精度，需要在使用前对其进行标定，即通过测量流量传感器的采样电压与对应的流速值建立对应的数据关系表，在实际使用时通过查表来通过采样电压计算出实际的流量值。
目前流量传感器的标定方式采用的是多点标定的方式，即从零点开始逐步增加流速值，记录对应的采样电压值。由于每次标定时需要记录大量采集点，标定数据达到几十个，因此存在消耗时间长，操作不方便，且效率较低等缺陷。
发明内容
本发明的目的旨在至少解决上述的技术缺陷之一。
为此，本发明的一个目的在于提出一种麻醉机流量传感器的流量标定方法。所述流量标定方法具有耗时短、使用方便的优点。
本发明的另一目的在于提出一种麻醉机流量传感器的流量标定系统。
为达到上述目的，本发明一方面的实施例提出一种麻醉机流量传感器的流量标定方法，包括以下步骤：逐步递增多个麻醉机的流速，当满足预设条件时采集流量传感器的电压值；计算每个麻醉机在多个采样点的平均电压值，并通过每个麻醉机在多个采样点的平均电压值以获得流量传感器的默认电压曲线；将所述默认曲线分为N个阶段，并在所述N个阶段选取N+1个标定点采集每个标定点的电压值，其中，所述N为大于1的正整数；以及计算所述每个标定点的采集电压值和所述默认电压曲线的电压差值，并根据所述电压差值准确标定所述麻醉机的流量。
根据本发明实施例的方法，通过在分阶段区间内确定标定点，并根据默认电压曲线与标定点的电压差值确定其他采集点的流量，因此减少了标定过程的复杂程度，方便了用户使用，同时还可以保证标定的准确性。
在本发明的一个实施例中，所述N个阶段为三个阶段，且第一阶段为流速0点至5L/min点、第二阶段为流速5L/min点至20L/min点和第三阶段为流速20L/min点至流速130L/min点。
在本发明的一个实施例中，所述预设条件为麻醉机的流速达到预设流速的整数倍。
在本发明的一个实施例中，所述三个阶段的预设流速各不相同。
在本发明的一个实施例中，所述N+1个标定点为四个标定点，所述四个标定点分别为流速0点、流速3L/min点、流速12L/min点和流速30L/min点。
为达到上述目的，本发明的实施例另一方面提出一种麻醉机流量传感器的流量标定系统，包括：采集模块，用于逐步递增多个麻醉机的流速，并采集满足预设条件时流量传感器的电压值；计算模块，用于计算每个麻醉机在多个采样点的平均电压值，并通过每个麻醉机在多个采样点的平均电压值以获得流量传感器的默认电压曲线；分段模块，用于将所述默认曲线分为N个阶段，并在所述N个阶段选取N+1个标定点采集每个标定点的电压值，其中，所述N为大于1的正整数；以及标定模块，用于计算所述每个标定点的采集电压值和所述默认电压曲线的电压差值，并根据所述电压差值准确标定所述麻醉机的流量。
根据本发明实施例的系统，通过在分阶段区间内确定标定点，并根据默认 电压曲线与标定点的电压差值确定其他采集点的流量，因此减少了标定过程的复杂程度，方便了用户使用，同时还可以保证标定的准确性。
在本发明的一个实施例中，所述N个阶段为三个阶段，且第一阶段为流速0点至5L/min点、第二阶段为流速5L/min点至20L/min点和第三阶段为流速20L/min点至流速130L/min点。
在本发明的一个实施例中，所述预设条件为麻醉机的流速达到预设流速的整数倍。
在本发明的一个实施例中，所述三个阶段的预设流速各不相同。
在本发明的一个实施例中，所述N+1个标定点为四个标定点，所述四个标定点分别为流速0点、流速3L/min点、流速12L/min点和流速30L/min点。
本发明附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：
图1为根据本发明一个实施例的麻醉机流量传感器的流量标定方法的流程图；
图2为根据本发明一个实施例的标定默认电压曲线的流程图；
图3为根据本发明一个实施例的流量传感器的流速与电压曲线；
图4为根据本发明一个实施例的标定每个麻醉机流量传感器流量的流程图；以及
图5为根据本发明一个实施例的麻醉机流量传感器的流量标定系统的结构框图。
具体实施方式
下面详细描述本发明的实施例，实施例的示例在附图中示出，其中自始至 终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
图1为根据本发明一个实施例的麻醉机流量传感器的流量标定方法的流程图。如图1所示，根据本发明实施例的麻醉机流量传感器的流量标定方法包括以下步骤：
步骤101，逐步递增多个麻醉机的流速，当满足预设条件时采集流量传感器的电压值。
在本发明的一个实施例中，预设条件为麻醉机的流速达到预设流速的整数倍。三个阶段的预设流速各不相同，第一阶段的预设流速为0.5L/min，第二阶段的预设流速为1L/min，第三阶段的预设流速为10L/min。
步骤102，计算每个麻醉机在多个采样点的平均电压值，并通过每个麻醉机在多个采样点的平均电压值以获得流量传感器的默认电压曲线。
步骤103，将默认曲线分为N个阶段，并在N个阶段选取N+1个标定点采集每个标定点的电压值，其中，N为大于1的正整数。
在本发明的一个实施例中，N个阶段为三个阶段，且第一阶段为流速0点至5L/min点、第二阶段为流速5L/min点至20L/min点和第三阶段为流速20L/min 点至流速130L/min点。
在本发明的一个实施例中，N+1个标定点为四个标定点，四个标定点分别为流速0点、流速3L/min点、流速12L/min点和流速30L/min点。
步骤104，计算每个标定点的采集电压值和默认电压曲线的电压差值，并根据电压差值准确标定麻醉机的流量。
图2为根据本发明一个实施例的标定默认电压曲线的流程图。如图2所示，对多台麻醉机中每台麻醉机的流量传感器进行多点标定，范围从0L/min到130L/min，对流量传感器进行通气，同时使用流量计监测流量，并且监测流量对应的流量传感器的电压值，例如，通上3L/min的气流时，监测出电压值为1.998v，记录流量和对应的电压值流量从0L/min至5L/min的范围内逐步增加，每次增加0.5L/min时，记录流量和对应的电压值。0L/min至5L/min的范围内共记录下11对采集点。流量从5L/min至20L/min的范围内逐步增加，每次增加1L/min时，记录流速和对应的电压值，在该范围内共记录下15对采集点。同理，在流量从20L/min至130L/min的范围内每次增加10L/min，记录流速和对应的电压值。在该范围内共记录11对采集点。在0L/min到130L/min范围内总共记录了37对采集点，将该37个采集点相连形成默认电压曲线，流量传感器的流速与电压曲线如图3所示。
在本发明的一个实施例中，将0L/min到130L/min分为三个阶段，并在三个阶段选取四个标定点。该三个阶段分别为0点以上至5L/min为第一个阶段，5L/min至20L/min为第二个阶段，20L/min至最大130L/min为第三个阶段。
图4为根据本发明一个实施例的标定每个麻醉机流量传感器流量的流程图。如图4所示，标定出4个点，每个点的标定方法同默认曲线中标定点的标定方法，第一个标定点为流速为0的点，第二个标定点取0点至5L/min的中间值，即流速为3L/min的点，第三个标定点取5L/min至20L/min的中间值，即流速为12L/min的点，第四个标定点取30L/min至130L/min中的代表值，即流速为30L/min的点，分别用这4个标定点在三个阶段中对本阶段的数据进行平移修正，得到所有实时计算使用的数据点。例如，在默认曲线中，流速为0的点对应流量传感器的电压值为2.100v，在对新流量传感器进行标定时，流速为0 的点对应流量传感器的电压值为2.098v，则用2.098v替换掉2.100v；在默认曲线中，流速为3L/min的点对应流量传感器的电压值为1.998v，在对新流量传感器进行标定时，流速为3L/min的点对应流量传感器的电压值为1.980v，则计算出两个差值为0.020v，即(1.998v-1.980v)，用该差值去修正0.5L/min至5L/min的10个点，即将默认曲线里的这10个点的电压值都加上0.020v，作为新流量传感器的标定值同理修正5L/min至20L/min的电压值和30L/min至130L/min的电压值。根据电压值得到流速，从而得到流量。
根据本发明实施例的方法，通过在分阶段区间内确定标定点，并根据默认电压曲线与标定点的电压差值确定其他采集点的流量，因此减少了标定过程的复杂程度，方便了用户使用，同时还可以保证标定的准确性。
图5为根据本发明一个实施例的麻醉机流量传感器的流量标定系统结构框图。如图5所示，根据本发明实施例的麻醉机流量传感器的流量标定系统包括采集模块100、计算模块200、分段模块300和标定模块400。
其中，采集模块100用于逐步递增多个麻醉机的流速，并采集满足预设条件时流量传感器的电压值。其中，预设条件为麻醉机的流速达到预设流速的整数倍。
计算模块200用于计算每个麻醉机在多个采样点的平均电压值，并通过每个麻醉机在多个采样点的平均电压值以获得流量传感器的默认电压曲线。
分段模块300用于将默认曲线分为N个阶段，并在N个阶段选取N+1个标定点采集每个标定点的电压值，其中，N为大于1的正整数。
在本发明的一个实施例中，N为3即分为三个阶段并在该阶段标定4个点，且第一阶段为流速0点至5L/min点、第二阶段为流速5L/min点至20L/min点和第三阶段为流速20L/min点至流速130L/min点。N+1个标定点为四个标定点，其中，四个标定点分别为流速0点、流速3L/min点、流速12L/min点和流速30L/min点。
在本发明的一个实施例中，三个阶段的预设流速各不相同，第一阶段的预设流速为0.5L/min，第二阶段的预设流速为1L/min，第三阶段的预设流速为10L/min。
标定模块400用于计算每个标定点的采集电压值和默认电压曲线的电压差值，并根据电压差值准确标定麻醉机的流量。
在本发明的一个实施例中，通过采集模块100对多台麻醉机中每台麻醉机的流量传感器在0L/min到130L/min范围内进行多点标定并在流量传感器通气时，采集流量传感器的电压值，例如，通上3L/min的气流时，采集模块100采集的电压值为1.998v，记录流量和对应的电压值。流量从0L/min至5L/min的范围内逐步增加，每次增加0.5L/min时，记录流量和对应的电压值0L/min至5L/min的范围内共记录下11对采集点。流量从5L/min至20L/min的范围内逐步增加，每次增加1L/min时，记录流速和对应的电压值，在该范围内共记录下15对采集点同理采集模块100在流量从20L/min至130L/min的范围内每次增加10L/min时，采集并记录流速和对应的电压值在该范围内共记录11对采集点在0L/min到130L/min范围内总共记录了37对采集点，计算模块200将该37个采集点相连以获得默认电压曲线，流量传感器的流速与电压曲线如图3所示。
分段模块300将流速0L/min到130L/min分为三个阶段并在三个阶段选取四个标定点。该三个阶段分别为0点以上至5L/min为第一个阶段，5L/min至20L/min为第二个阶段，20L/min至最大130L/min为第三个阶段。
在本发明的一个实施例中，标定模块400在三个阶段选取4个标定点，第一个标定点为流速为0的点，第二个标定点取0点至5L/min的中间值，即流速为3L/min的点，第三个标定点取5L/min至20L/min的中间值，即流速为12L/min的点，第四个标定点取30L/min至130L/min中的代表值，即流速为30L/min的点，分别用这4个标定点在三个阶段中对本阶段的数据进行平移修正，得到所有实时计算使用的数据点。例如，在默认曲线中，流速为0的点对应流量传感器的电压值为2.100v，在对新流量传感器进行标定时，流速为0的点对应流量传感器的电压值为2.098v，则用2.098v替换掉2.100v；在默认曲线中，流速为3L/min的点对应流量传感器的电压值为1.998v，在对新流量传感器进行标定时，流速为3L/min的点对应流量传感器的电压值为1.980v，则计算出两个差值为0.020v，即(1.998v-1.980v)，用该差值去修正0.5L/min至5L/min的10个点，即将默认曲线里的这10个点的电压值都加上0.020v，作为新流量传感 器的标定值。同理，修正5L/min至20L/min的电压值和30L/min至130L/min的电压值。标定模块400根据电压值得到流速，并根据流速和时间等获得麻醉机的流量。
根据本发明实施例的系统，通过在分阶段区间内确定标定点，并根据默认电压曲线与标定点的电压差值确定其他采集点的流量，因此减少了标定过程的复杂程度，方便了用户使用，同时还可以保证标定的准确性。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在不脱离本发明的原理和宗旨的情况下在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种麻醉机流量传感器的流量标定方法，其特征在于，包括以下步骤：
    逐步递增多个麻醉机的流速，当满足预设条件时采集流量传感器的电压值；
    计算每个麻醉机在多个采样点的平均电压值，并通过每个麻醉机在多个采样点的平均电压值以获得流量传感器的默认电压曲线；
    将所述默认曲线分为N个阶段，并在所述N个阶段选取N+1个标定点采集每个标定点的电压值，其中，所述N为大于1的正整数；以及
    计算所述每个标定点的采集电压值和所述默认电压曲线的电压差值，并根据所述电压差值准确标定所述麻醉机的流量。
  2. 如权利要求1所述的麻醉机流量传感器的流量标定方法，其特征在于，所述N个阶段为三个阶段，且第一阶段为流速0点至5L/min点、第二阶段为流速5L/min点至20L/min点和第三阶段为流速20L/min点至流速130L/min点。
  3. 如权利要求1所述的麻醉机流量传感器的流量标定方法，其特征在于，所述预设条件为麻醉机的流速达到预设流速的整数倍。
  4. 如权利要求3所述的麻醉机流量传感器的流量标定方法，其特征在于，所述三个阶段的预设流速各不相同。
  5. 如权利要求1所述的麻醉机流量传感器的流量标定方法，其特征在于，所述N+1个标定点为四个标定点，所述四个标定点分别为流速0点、流速3L/min点、流速12L/min点和流速30L/min点。
  6. 一种麻醉机流量传感器的流量标定系统，其特征在于，包括：
    采集模块，用于逐步递增多个麻醉机的流速，并采集满足预设条件时流量传感器的电压值；
    计算模块，用于计算每个麻醉机在多个采样点的平均电压值，并通过每个麻醉机在多个采样点的平均电压值以获得流量传感器的默认电压曲线；
    分段模块，用于将所述默认曲线分为N个阶段，并在所述N个阶段选取N+1个标定点采集每个标定点的电压值，其中，所述N为大于1的正整数；以及
    标定模块，用于计算所述每个标定点的采集电压值和所述默认电压曲线的电压差值，并根据所述电压差值准确标定所述麻醉机的流量。
  7. 如权利要求6所述的麻醉机流量传感器的流量标定系统，其特征在于， 所述N个阶段为三个阶段，且第一阶段为流速0点至5L/min点、第二阶段为流速5L/min点至20L/min点和第三阶段为流速20L/min点至流速130L/min点。
  8. 如权利要求6所述的麻醉机流量传感器的流量标定系统，其特征在于，所述预设条件为麻醉机的流速达到预设流速的整数倍。
  9. 如权利要求8所述的麻醉机流量传感器的流量标定系统，其特征在于，所述三个阶段的预设流速各不相同。
  10. 如权利要求6所述的麻醉机流量传感器的流量标定系统，其特征在于，所述N+1个标定点为四个标定点，所述四个标定点分别为流速0点、流速3L/min点、流速12L/min点和流速30L/min点。
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