Independent photoelectric smoke detection alarm

Abstract

The invention discloses an independent photoelectric smoke detection alarm which comprises an alarm base, an alarm upper cover and a circuit board. The alarm upper cover covers the alarm base to form a photoelectric darkroom, and only smoke and less light are allowed to enter the photoelectric darkroom. A space is surrounded by a lower recessed cavity in the alarm base and an upper recessed cavity in the alarm upper cover to form the photoelectric darkroom. The circuit board is arranged in the lower recessed cavity. A signal processing module, an infrared transceiver module and a wireless communication module are integrated on the circuit board. The infrared transceiver module comprises an infrared light emitting diode and an infrared receiving diode. A voice alarm module and a display module are built in the alarm upper cover. A test button is arranged on the alarm upper cover. A power supply module is arranged in the alarm base. The independent photoelectric smoke detection alarm provided by the invention has the advantages of strong anti-interference ability, sensitive detection, simple structure, reasonable design, accurate detection and long service life. A 3-volt lithium manganese battery with the service life of 10 years is built in the independent photoelectric smoke detection alarm.

Description

technical field [0001] The invention relates to an automatic detection and alarm device for fire smoke, in particular to an independent photoelectric smoke detection and alarm device. Background technique [0002] Along with modern hotel, restaurant, place of entertainment and family etc. use fire, the increase of electricity consumption, the frequency that various fires take place is more and more higher. In order to be able to find out early to avoid heavy loss of life and property, people are now generally equipped with alarm devices. There are many types of alarms in the prior art. From the perspective of principle and function, there are mainly ion, photoelectric and temperature-sensitive types. The alarm uses the high-sensitivity detection elements installed inside to capture abnormal changes in temperature and gas content in the air and send out alarm signals. . However, the alarms sold on the market generally only have an automatic alarm function and cannot be oper...

AI Technical Summary

Problems solved by technology

However, the alarms sold on the market generally only have an automatic alarm function and cannot be operated manually. However, due to the long-term use of the alarm in different environments, the sensitivity may decrease or fail under the influence of factors such as dust and humidity, or due to the occurrence of If the fire is in the early stage, or the alarm cannot be detected due to other reasons, the alarm will not work

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