Instrument for simultaneously monitoring the concentration of carbon monoxide and carbon dioxide

A carbon dioxide and carbon monoxide technology, applied in instruments, scientific instruments, measuring devices, etc., can solve the problems of high requirements for spectroscopic instruments, high equipment maintenance costs, and high cost of the entire set of equipment

Inactive Publication Date: 2005-06-29
HARBIN INST OF TECH
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Problems solved by technology

Among them, DOAS technology generally uses optical parametric oscillators as emission sources, but optical parametric oscillators are expensive, and this technology has high requirements for spectroscopic instruments and detection devices, so the cost of the entire set of equipment is very expensive
LIDAR technology is easily affected by the external environment. For example, the accuracy of its measurement will decrease with the increase of wind speed, and the maintenance cost of the equipment is high. Therefore, it is rarely

Method used

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  • Instrument for simultaneously monitoring the concentration of carbon monoxide and carbon dioxide

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Embodiment Construction

[0005] combine figure 1 Describe this embodiment, it is made up of sawtooth wave generator 1, current controller 2, temperature controller 3, diode laser 4, first convex lens 5, second convex lens 6, detector 7, computer 8; Sawtooth wave generator 1 The signal output end of the current controller 2 is connected to the signal input end of the current controller 2, the control output end of the current controller 2 is connected to the current control end of the diode laser 4, the control output end of the temperature controller 3 is connected to the temperature control end of the diode laser 4, and the diode laser 4. The output laser is input to the input end of the first convex lens 5 and then transmitted through the first convex lens 5 and then output from the output end of the first convex lens 5. After the laser passes through the gas to be measured, it is input to the input end of the second convex lens 6. The transmission of the two convex lenses 6 is input from the output...

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Abstract

It is a device to simultaneously monitor the concentration of the carbon monoxide and carbon dioxide and relates to diode laser spectrum application technique field, which comprises saw tooth wave generator 1, current controller 2, temperature controller 3, diode laser 4, first convex 5, second convex 6, detector 7 and computer, wherein, the output end of I is connected with input end of signal 2; the control output end of 2 is connected with current control end of 4; the output laser is input to the input end of 5 and is output by transmission of 5; the laser through the gas to be measured to the input end of 6; the data signal output end of 7 is connected with data input end of 8.

Description

Technical field: [0001] The invention relates to the technical field of diode laser spectrum application, in particular to an instrument for simultaneously monitoring the concentration of carbon monoxide and carbon dioxide. Background technique: [0002] At present, the technologies that can realize online gas monitoring mainly include differential absorption spectroscopy (DOAS) technology, laser radar (LIDAR) technology and diode laser spectroscopy technology. Among them, DOAS technology generally uses optical parametric oscillators as emission sources, but optical parametric oscillators are expensive, and this technology has high requirements for spectroscopic instruments and detection devices, so the cost of the entire set of equipment is very expensive. LIDAR technology is easily affected by the external environment. For example, the accuracy of its measurement will decrease with the increase of wind speed, and the maintenance cost of the equipment is high. Therefore, it...

Claims

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Application Information

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IPC IPC(8): G01N21/17G01N21/25
Inventor 张治国白云峰张云刚
Owner HARBIN INST OF TECH
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