Dew sensor and manufacturing method thereof

Abstract

The invention relates to a moisture condensation sensor, which comprises a basic board with at least two electrodes; at least two comb electrodes, and a sensing layer. Wherein, said comb electrodes contact part of two electrodes of basic board; the sensing layer is a fibrin ramification formed on at least two comb electrodes; said invention also provides a relative preparing method which comprises: (a) providing a basic board with at least two electrodes, a conductive glue and a sensing glue; (b) coating said conductive glue on the basic board to form at least two alternative non-contact comb electrodes, which partly contact two electrodes of basic board; (c) coating the sensing glue on the comb electrodes, while said sensing glue contains fibrin ramification and carbon powder.

Description

Technical field [0001] The present invention relates to a condensation sensor, in particular to a condensation sensor using cellulose chemical derivatives as the sensing layer. Background technique [0002] With the development of the times, industrial sectors such as science and technology, agriculture, textiles, computer rooms, aerospace, electric power, etc. increasingly need to use humidity sensors. The requirements for product quality are getting higher and higher, and the environmental temperature and humidity are controlled. And the monitoring and analysis of the moisture value of industrial materials have become one of the standard technical conditions. Humidity refers to the content of moisture in the air. As far as industrial processes are concerned, the best humidity control is about 0-20%RH. If the humidity is 20%RH, medicines, foods, electronic semiconductors and other objects will begin to deteriorate. At 35% RH, metals and electronic products begin to oxidize or de...

AI Technical Summary

Problems solved by technology

[0004] Generally, in order to avoid condensation caused by temperature changes inside the case of electrical products due to the installation of water-cooled heat sinks in the case, causing short circuits or damage to electrical appliances, condensation sensors are often installed in the case to prevent Respond early and feed back the control signal before dew condensation, activate the dehumidification device, and protect electrical products; however, the response characteristic curve of the commonly used humidity sensor is relatively flat, so it is often not possible to condense when the humidity reaches 80%-90% RH Respond in a timely manner; in addition, known metal oxide sensors are mostly produced using a process similar to IC wafers. The preparation process is cumbersome, and the materials and process costs are expensive, so they cannot be popularized in general low-priced consumer products.

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