Multifunctional Gas Sensor

Abstract

The invention discloses a multifunctional gas sensor, which includes a laser transmitter and a laser receiver. The gas chamber is composed of a gap between a solid conductive transparent glass rod and a hollow metal tube. The solid conductive transparent glass rod is connected to the positive electrode of the bias voltage. , the hollow metal tube is connected to the negative electrode of the bias voltage, and a polished surface for reflecting laser light is provided in the interval area of ​​the catalyst film. The laser receiver and the laser receiver are separately arranged at both ends of the solid conductive transparent glass rod. When the laser transmitter and the laser receiver are turned on, the laser light emitted by the laser receiver is obliquely injected from one end of the solid conductive transparent glass rod, and passes through the polished surface. The secondary reflection illuminates a laser receiver located at the other end of a solid conductive transparent glass rod. The multifunctional gas sensor of the invention has two functions of a laser gas sensor and an ionization gas sensor.

Description

technical field [0001] The invention relates to a plasma sensor, especially a multifunctional gas sensor. Background technique [0002] There are two kinds of existing gas sensors, one is a laser gas sensor, and the other is an ionization sensor. The detection principle of the laser gas sensor is: use the laser transmitter to emit laser light to irradiate the measured gas, and the laser receiver receives the laser light after irradiating the measured gas, and analyze and detect the measured gas according to the absorption effect of the measured gas on the laser of a specific wavelength Concentration of gas (such as "TO package laser and gas sensor" whose application publication number is CN 107994456A, "laser gas sensor" whose authorization announcement number is CN 205317667U, "a laser methane gas sensor" whose application publication number is CN 107991238A) ; The detection principle of the ionization sensor is: by applying a voltage between the electrode plates, the meas...

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Problems solved by technology

[0003] In practical applications, sometimes it is necessary to use a laser gas sensor, and sometimes it is necessary to use an ionization sensor. Since the existing above-mentioned two gas sensors cannot be used universally, it needs to be replaced frequently, with a large workload and low efficiency, or a laser sensor can be installed at the same time. Type and ionization gas sensors, the cost is higher

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