| 摘要 |
The present invention relates to a gas shut-off method through the mutual monitoring of micoms in a boiler equipped with a plurality of micoms, and is characterized by repetitively performing: a step of storing data inputted from various sensors and loads in a buffer; and a step of transmitting and receiving the data stored in the buffer; a step for calculating slopes in comparison with a given time for various data previously inputted from each micom and stored in the buffer and data currently inputted and stored in the buffer; a step of calculating allowable error ranges set to be different from each other by slope for different situations previously inputted by corresponding to the calculated slope values; and a step of determining whether the transmitted values are within the allowable error ranges by adding or subtracting the calculated allowable errors to/from the data of various sensors and loads transmitted lastly from the opposite micom. Therefore, according to the present invention, the method measures data for the cases with greatly varying values of normal loads, reduces data deviating from the allowable error range and processes of re-detecting and comparing output values of various sensors and important loads to reduce communication delays generated due to the re-detecting and comparing, remarkably improves the safety of the boiler, and remarkably improves the reliability and marketability of a product. [Reference numerals] (AA,BB) Read data;(CC,DD) Read values of sensor and loads to store the values in a buffer;(EE,FF) Transmit and receive the data;(GG,HH) Calculate each slope A=(|V_1-V_2|)/Δt;(II,JJ) Calculate allowable error ranges according to the slope;(KK,NN) Do not deviate from the allowable error ranges;(LL.MM) Determine if the transmitted value deviates from the allowable error ranges by adding/subtracting an allowable error;(OO) Deviate from the allowable error ranges;(PP) Block a gas valve;(QQ) Operate a display unit or an alarm |
