Abstract: In view of the functions and problems in the use of existing aspirating smoke detectors in the market, the improvement measures and methods of aspirating smoke detectors are researched and discussed according to the needs of users. A scheme of adding gas detection module to the aspirating detector is proposed, so as to realize the dual monitoring of smoke and gas. Three problems of U-shaped branch pipeline layout are analyzed, and the method of independent detection of airflow in a single-channel multi pipeline detector is introduced. The advantages and disadvantages of two kinds of common multi-channel detectors in the market are compared, and the initial-fire alarm of multi-channel detector is added to the multi-channel detector. According to the market development trend, the design of wireless communication is advised. Various improvement measures and schemes proposed in this paper can improve the service performance of existing products and be more practical.

Key words: gas detection module, single-channel multi pipeline detector, initial-fire alarm, wireless communication