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An oxygen concentration calibration device

A technology for calibrating devices, oxygen concentration, applied in the field of sensors

Active Publication Date: 2017-09-05
AMBULANC (SHENZHEN) TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to propose an oxygen concentration calibration device, aiming at solving the problem of how to simultaneously realize 100% and 21% oxygen concentration calibration

Method used

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  • An oxygen concentration calibration device

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Embodiment 1

[0015] refer to figure 1 , figure 1 It is a schematic structural diagram of an oxygen concentration calibration device according to an embodiment of the present invention.

no. 1 example

[0016] In the first embodiment, the oxygen concentration calibration device includes:

[0017] Oxygen concentration sensor (1), secondary three-way solenoid valve (2), main three-way solenoid valve (3) and Venturi structure (4); one end of the Venturi structure (4) is connected to the secondary three-way solenoid valve One end of (2) is connected, the other end of the auxiliary three-way solenoid valve (2) is connected to the oxygen concentration sensor (1), and the other end of the Venturi structure (4) is connected to the main three-way solenoid valve ( 3), and the other end of the main three-way solenoid valve (3) is connected with the oxygen concentration sensor (1).

[0018] Preferably, in the first embodiment, the auxiliary three-way solenoid valve (2) directly connects the air suction end of the Venturi structure (4) to the atmosphere, and disconnects the oxygen concentration sensor (1);

[0019] The main three-way solenoid valve (3) connects the gas output by the Vent...

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Abstract

The embodiment of the present invention discloses an oxygen concentration calibration device, and provides an oxygen concentration calibration device, the device includes an oxygen concentration sensor 1, an auxiliary three-way solenoid valve 2, a main three-way solenoid valve 3 and a Venturi structure 4; One end of the Venturi structure 4 is connected to one end of the auxiliary three-way solenoid valve 2, the other end of the auxiliary three-way electromagnetic valve 2 is connected to the oxygen concentration sensor 1, and the other end of the Venturi structure 4 is connected to the One end of the main three-way solenoid valve 3 is connected, and the other end of the main three-way solenoid valve 3 is connected with the oxygen concentration sensor 1, so as to realize the oxygen concentration of 100% and 21% at the same time using the air sucked by the Venturi structure. purpose of calibration.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of sensors, and in particular to an oxygen concentration calibration device. Background technique [0002] At present, oxygen concentration sensors are generally designed in respiratory equipment, and the concentration deviation of the oxygen concentration sensor will occur after a period of use, that is, the deviation of the monitored concentration is relatively large. At this time, the oxygen concentration sensor needs to be calibrated. Generally, the method of calibration is to feed in compressed pure oxygen (oxygen concentration 100%) and compressed air (oxygen concentration 21%) at a certain flow rate respectively, and calibrate the 100% and 21% of them. [0003] Calibration cannot be completed without any of these gases. In the out-of-hospital environment (emergency, transfer environment), compressed air is often not equipped, and calibration cannot be performed at this time. H...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M16/00
Inventor 冯耿超黄志昂刘存志袁先念
Owner AMBULANC (SHENZHEN) TECH CO LTD