Condensation detection device

Abstract

The invention relates to the technical field of water vapor detection, in particular to a condensation detection device. The condensation detection device comprises a condensation detection sensor, the condensation detection sensor comprises a substrate, fence-shaped wires drawn on the surface of the substrate are arranged on the substrate, the fence-shaped wires comprise a first exposed copper wire and a second exposed copper wire, and the first exposed copper wire and the second exposed copper wire are arranged in a staggered mode. Through the arrangement of the fence-shaped wires, when water vapor acts on a condensation detection circuit, the water vapor is condensed when meeting cold and is attached to the fence-shaped wires and the substrate, so that the equivalent impedance of the detection circuit is reduced. Whether condensation exists or not and the severity degree of condensation can be known through the magnitude of the equivalent impedance. When the device is used for detecting the condensation, excessive other electronic components are not needed, the cost is extremely low, the implementation is convenient, and the sensitivity is high.

Description

technical field [0001] The invention relates to the technical field of water vapor detection, in particular to a condensation detection device. Background technique [0002] The photoelectric smoke detector is a device that uses the absorption and scattering of light by fire smoke to detect fire. When smoke particles interact with light, there are two different processes: the particles can re-radiate the received energy at the same wavelength, and the re-radiation can occur in all directions, but the radiation intensity in different directions is different, which is called scattering; On the one hand, radiant energy can be converted into other forms of energy, such as thermal energy, chemical energy or secondary radiation of different wavelengths, which is called absorption. In order to detect the existence of smoke, a beam of light emitted by the transmitter can be hit on the smoke: if it is on its optical path, the method of determining the smoke by measuring the attenuat...

AI Technical Summary

Problems solved by technology

[0003] Photoelectric smoke detectors have a wide range of applications, but if water vapor enters the photoelectric smoke detector, a beam of light from the transmitter hits the water vapor, and the water vapor scatters the light. After the receiver receives the scattered light, it is easy to cause False alarms from photoelectric smoke detectors, or reduced detection sensitivity and increased response time

Condensation detection is a major difficulty in existing photoelectric smoke detectors

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