Ozone sensor
An ozone sensor and parts technology, applied in the field of detection devices, can solve the problems of weak ozone absorption, short service life, slow response speed, etc.
Inactive Publication Date: 2012-08-22
贺明志
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Problems solved by technology
Existing products include electrochemical sensors, semiconductor sensors, and ultraviolet or monochromatic light characteristic absorption sensors, among which electrochemical sensors have disadvantages such as slow response speed and short service life; semiconductor sensors are used in the field of low concentration detection, and ultraviolet light characteristic absorption sensors Existing products have extremely high requirements on the stability of light sources. Ordinary ultraviolet light sources cannot meet the performance requirements and require special light sources, resulting in a significant increase in product costs. They can only be used within a limited range, and the scope of promotion is greatly affected; in other units The characteristic absorption of ozone in the color spectrum is weak, and its response accuracy is affected, which limits its application field
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[0010] The present invention is based on the purpose of realizing low-cost high-concentration ozone with high precision, quick response, and continuous measurement. It adopts a single universal ultraviolet light source, which consists of an ultraviolet lamp lamp tube part 12 and a drive power supply part 11. Two parts 27, The dual-optical-path filter module composed of two parts 28 and 29 filters the multi-band ultraviolet light emitted by the ultraviolet lamp to generate a characteristic light wave of 253.7nm. The dual-optical-path filter module is installed on the main body near the light source end of part 21. Then assemble parts 22,26 ozone absorption pool, part 25 far away light source end quartz glass sheet, part 24 photoelectric receivers are installed in part 23 far light source end assembly body, assemble together with the other end of parts 22,26 ozone absorption pool , forming a tight air path, the ultraviolet light emitted by the ultraviolet lamp, the characteristic...
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The invention relates to an ozone sensor, which is based on the goal for realizing the high-precision, fast-response and continuous measurement of high-concentration ozone at low cost. A single general ultraviolet light source is used for feature filtering, double air paths and double light paths are adopted, one light path is used as the zero reference, the other light path is used a measuring light path, the ozone concentration is calculated according to the Beer-Lambert's law, the defect of light source instability is overcome, and the cost is reduced.
Description
Technical field: [0001] The invention relates to a detection device, especially for the measurement of relatively high concentration of ozone. Background technique: [0002] With the development of society, the detection of ozone concentration occupies an increasingly important position. It is necessary to detect ozone concentration in the fields of environmental testing, product testing, and medical life sciences. Existing products include electrochemical sensors, semiconductor sensors, and ultraviolet or monochromatic light characteristic absorption sensors, among which electrochemical sensors have disadvantages such as slow response speed and short service life; semiconductor sensors are used in the field of low concentration detection, and ultraviolet light characteristic absorption sensors Existing products have extremely high requirements on the stability of light sources. Ordinary ultraviolet light sources cannot meet the performance requirements and require special l...
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IPC IPC(8): G01N21/27
Inventor 贺明志吴亚琼许睿
Owner 贺明志