Composite alarm

Abstract

The invention discloses a composite alarm. The alarm comprises a main shell and a cover plate; the main shell and the cover plate are buckled and spliced; the cover plate is symmetrically provided with an indicating lamp belt and an air inlet on two sides of the window; a microcontroller is electrically connected with a color screen; the microcontroller is electrically connected with a CC2530 chipand a WIFI module; a high-frequency power switch is electrically connected with a voltage stabilizer, the voltage stabilizer is electrically connected with a smoke detection sensor and a fuel gas detection sensor, the smoke detection sensor and the fuel gas detection sensor are electrically connected with the microcontroller, and the microcontroller is electrically connected to the voice module.The composite alarm provided by the invention can detect smoke and gas at the same time, has perfect dustproof and waterproof effects, can remove dust at the gas inlet under the condition that the cover plate is not disassembled, can know whether a water-absorbent resin drying agent fails or not, is convenient to use, and is very worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of alarms, in particular to a composite alarm. Background technique [0002] In the prior art, the application number is "201821104756.0", a three-in-one indoor sensor for smoke, combustible gas concentration and temperature, including a box body, a connecting column is provided on one side of the top of the box body, and a groove is opened on the top of the connecting column The two sides of the inner wall of the groove are connected with two rotation shafts respectively, and the two rotation shafts are respectively arranged at the bottom of both sides of the wireless transceiver. There are a number of ventilation holes. The smoke, combustible gas concentration and temperature three-in-one indoor sensor has three functions of detecting smoke, combustible gas concentration and ambient temperature at the same time, which greatly expands the adaptability of the detector and is more suitable for use. In homes,...

AI Technical Summary

Problems solved by technology

[0003] However, there are still relatively obvious defects in its use: 1. The above-mentioned devices lack dust-proof devices. The accuracy is greatly reduced, so the service life of the sensor in the above-mentioned device is extremely limited, and the detection accuracy is not high; 2. The sensor is used in different environments, and it needs to be strictly protected from water or moisture, otherwise it will cause the sensor to fail. The lack of moisture-absorbing and moisture-proof structure makes the sensor prone to failure and damage when used in a high-humidity environment

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