Wang Jifeng. REALIZATION OF PRE-ALERT AND UP-ALEAT IN FIRE DETECTION AND CONTROL[J]. Journal of Civil and Environmental Engineering, 1994, 16(2). DOI: 10.11835/j.issn.1674-4764.1994.02.014.
From a viewpoint of the sectirity and the exactness for a fire system
this paperexplicates the function and the element of two-degree alert(TD)
pre-alert and up-alert applied tothe detection and the control in the fire system. An example in the paper deduces the logical expres-sion designing TDA and the hardware logic circuit is given. The paper also presents the software pro-gram realizing TDA utilizing the single chip microcomptiter(87C48)