Method for collocating combustible gas detecting alarm with data recording function

Abstract

The invention relates to a method for setting a combustible gas detection alarm with the function of data recording, and the method comprises the following steps: a singlechip with an analogue-digital converter is set, and a detection unit, an alarm mechanism, a memory and a power supply respectively connected with the singlechip are set; a computer connected with the singlechip is set for sending communication commands to the singlechip and receiving data sent by the singlechip; a preset alarm threshold value memory unit for comparing data, a normal-state data memory unit, an alarm threshold value memory unit for detecting the short circuit fault and the open circuit fault of the unit, and a memory unit for checking a unit temperature offset data table are set for the singlechip; when the singlechip receives a communication command of the computer, the singlechip reads the data stored in the memory and inducts time backwards according to the specific power-down time of the alarm to obtain the specific time before the power-down time, and the data information of the specific time is analyzed for obtaining reasons of an accident as well as results of responsibility judgment.

Description

[0001] The present invention is a divisional application of the application number 200610015576.0. The filing date of the parent application is: September 4, 2006. The invention name is "combustible gas detection and alarm device with data recording device". technical field [0002] The invention relates to gas detection, in particular to a configuration method of a combustible gas detection and alarm device with electronic recording function. Background technique [0003] 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 se...

AI Technical Summary

Problems solved by technology

[0006] 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

[0007] 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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