Alarm with data recording device for detecting combustible gas

Abstract

An alarm being used to detect flammable gas and being set with data record unit consists of A / D converter, detection unit, alarm mechanism and power supply. It is featured as connecting monolithic computer to storage through data line enabling to write voltage data in storage on fixed time and clock line port, connecting monolithic computer to detection unit by data line and connecting one storage to monolithic computer to output alarm signal being consistency with alarming conditions to relay and buzzer as well as indication lamp, simultaneously storing position data of alarm data in storage.

Description

technical field [0001] The invention relates to an electronic device for gas detection, in particular to a combustible gas detection and alarm device with an electronic recording unit. Background technique [0002] Known technology, such as Chinese patent 03270719.3 discloses a portable intelligent gas detector, which includes one or more gas detection sensors and I / V conversion amplification processing circuits connected to each gas detection sensor, A temperature sensor circuit, a microprocessor with multi-channel analog signal input terminals, an external program memory and a liquid crystal display circuit that store the standard curve table data of the zero point and temperature of the sensor; the gas detection sensor is converted by I / V The amplification processing circuit is connected with the corresponding analog signal input end of the microprocessor, and the temperature sensor is connected with the corresponding analog signal input end of the...

AI Technical Summary

Problems solved by technology

[0005] In addition, most of the known technologies cannot record the real-time operation data of the detector under the normal monitoring state and the alarm state, which makes many problems such as whether the sensor is aging and must be replaced, the sensor is of poor quality, the combustible gas alarm system falsely alarms or falsely reports faults, etc. There is no way to investigate the engineering problems in actual use, and it is impossible to analyze the accident and determine the responsibility after the gas leakage accident occurs

[0006] In addition, most of the existing detectors that can memorize time data use a timing clock chip and use an internal battery to keep the clock chip working continuously when the product is powered off. The cost of the overall product of the alarm remains high, which affects the promotion of the industry

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