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Oxygen concentration calibration device

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

Active Publication Date: 2015-08-26
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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  • Oxygen concentration calibration device

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Embodiment 1

[0015] Reference 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] The oxygen concentration sensor (1), the auxiliary three-way solenoid valve (2), the main three-way solenoid valve (3) and the Venturi structure (4); one end of the Venturi structure (4) and the auxiliary 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) is connected to one end, and the other end of the main three-way solenoid valve (3) is connected to the oxygen concentration sensor (1).

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

[0019] The main three-way solenoid valve (3) connect...

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Abstract

The embodiment of the invention discloses an oxygen concentration calibration device which comprises an oxygen concentration sensor 1, an auxiliary three-way electromagnetic valve 2, a main three-way electromagnetic valve 3 and a venturi structure 4. One end of the venturi structure 4 is connected with one end of the auxiliary three-way electromagnetic valve 2. The other end of the auxiliary three-way electromagnetic valve 2 is connected with the oxygen concentration sensor 1. The other end of the venturi structure 4 is connected with one end of the main three-way electromagnetic valve 3. The other end of the main three-way electromagnetic valve 3 is connected with the oxygen concentration sensor 1. In this way, the purpose that the oxygen concentration of 100% and the oxygen concentration of 21% are calibrated through the air sucked by the venturi structure is achieved.

Description

Technical field [0001] The embodiment of the present invention relates to the technical field of sensors, in particular to an oxygen concentration calibration device. Background technique [0002] At present, oxygen concentration sensors are generally designed in respiratory equipment, and oxygen concentration sensors will have concentration deviations after a period of use, that is, monitoring concentration deviations are relatively large. At this time, the oxygen concentration sensor needs to be calibrated. The calibration method is generally to pass in a certain flow of compressed pure oxygen (oxygen concentration 100%) and compressed air (oxygen concentration 21%), and calibrate the 100% and 21%. [0003] Without any of these gases, calibration cannot be completed. In the out-of-hospital environment (emergency, transport environment), compressed air is often not equipped, and calibration cannot be performed at this time. However, most emergency and transport ventilators that...

Claims

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Application Information

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