Microcomputer gas alarm

Abstract

The invention discloses a microcomputer gas alarm which comprises a first sensor, a second sensor, a self-checking circuit, an analog switch, a comparison circuit, a microcomputer singlechip and an alarm device. The microcomputer gas alarm can monitor the gas concentration in the environment in real time, and alarms when the gas concentration exceeds the standard. The cost is low, and the safety for gas usage is ensured. The microcomputer gas alarm is favorable to wide popularization and application, and has great significance to the production practice. In addition, the microcomputer gas alarm can also adopt a remote speech terminal, as for a user having a larger use environment, the alarm with the remote speech terminal is safer and more convenient, furthermore, the self-checking circuit can monitor the circuit of the alarm in real time, once the circuit is damaged, a warning is sent to the user as an indication, and regular manual inspection is not needed.

Description

technical field [0001] The invention relates to the technical field of gas monitoring, in particular to a microcomputer gas alarm. Background technique [0002] Gas alarms currently on the market generally include: ceiling-mounted gas alarms, household gas alarms, and online carbon monoxide alarms (gas alarms). [0003] Among them, the ceiling-mounted gas alarm can be used to sense gases such as gas, natural gas, and liquefied petroleum gas. It can be used alone, or it can be used in a network with the control system. Reset, with the characteristics of flexible installation. [0004] Household gas alarms can be used to sense gas, natural gas and other gases. If the alarm is on with a steady red light, a long beep from the horn, and an open-circuit signal output, it means that the alarm has failed and should be replaced in time. The alarm must be checked every other month. Generally, a lighter is used to spray gas through the vent hole of the alarm to observe whether there ...

AI Technical Summary

Problems solved by technology

Although there are many types of domestic home alarms, there are too many false alarms; while imported products are expensive and cumbersome to operate, which may cause false alarms due to user misoperation

Missing reporting is another major problem. The alarm system can be said to be a product that is used for thousands of days. After a year or a half of use, the user has no way of knowing whether the battery is still charged, and frequent inspections are too cumbersome, which can easily lead to false reporting.

[0011] (3) The sensitivity is too high

As an alarm, one of the reasons why it is not generally accepted by people is its high sensitivity.

According to the applicant's knowledge, the alarms produced by some companies will make the alarm sound even if the slight gas produced when the lighter is extinguished, and the alarms that are too sensitive will bring unnecessary troubles to people.

[0012] (4) Some products are expensive and not suitable for home use

This kind of alarm method that both disturbs the neighbors and has no effect is also a major drawback of today's alarms.

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