Double-wire system special module

Abstract

The invention discloses a double-wire system special module, which aims to provide a double-wire special module with simple wire connection and powerful functions to reduce the use cost of conducting wires, is compatible with passive feedback and active feedback of the action of fire fighting equipment, and realize the detection to open-circuit and short-circuit faults of lines. The key points of the technical proposal of the special module are as follows: the special module consists of an active feedback detection circuit, a passive feedback detection circuit and a start-stop circuit, and the special module and a fire alarm control part are connected through the two conducting wires. With the same construction distance, the double-wire system special module saves 33 percent, 50 percent and 60 percent of conducting wires respectively compared with a three-wire system special module, a four-wire system special module, and a five-wire system special module; the double-wire system special module is compatible with two feedback inputs, namely the active feedback and the passive feedback, has strong engineering adaptability, and realizes the feedback to the open-circuit and short-circuit faults of the lines; a single module can control the start / stop of the fire fighting equipment without self locking, and can also control the start / stop of the fire fighting equipment with self locking; and the double-wire system special module has strong anti-surge capacity of circuits.

Description

technical field [0001] The invention relates to a two-wire special module, in particular to a two-wire special module used for fire fighting equipment. Background technique [0002] The special module of the fire fighting equipment is connected with the fire alarm control part, and is used to transmit and receive the start and stop signals and the action status feedback signal of the fire fighting equipment. The current special-purpose module product is a multi-wire system, which is connected to the fire alarm control part through 3 to 5 wires. The distance between the general fire alarm control part and the terminal fire equipment is relatively long, so the wire cost of the multi-wire special module is very high. The function of the current multi-wire system dedicated module is relatively simple, and it can only receive passive feedback or active feedback of the action of fire fighting equipment, and cannot effectively detect open circuit and short circuit faults of the li...

AI Technical Summary

Problems solved by technology

The function of the current multi-wire system dedicated module is relatively single, it can only receive one of the passive feedback or active feedback of the action of the fire fighting equipment, and cannot effectively detect the open circuit and short circuit faults of the line

Due to the different functions of each conductor, the wiring is more complicated and easy to be connected incorrectly. The complexity of the circuit increases the possibility of short circuit faults during the construction process.

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