A realization method of a device for realizing long-distance high-current driving of fire-fighting bus

Abstract

The present invention discloses a device of realizing the fire-fighting bus long-distance large-current driving. The device comprises a signal obtaining module, a signal isolation device, a signal amplification module, an output signal module, a current signal detection module and a current signal amplification and feedback module. The present invention additionally provides a realization method of the device. The device and the realization method of the present invention are simple in structure, are convenient to use and achieve the purpose of the fire-fighting bus long-distance large-current driving very well, thereby effectively breaking through the technical bottleneck, and overcoming the industry problems. Moreover, the device and the realization method of the present invention both adopt the conventional circuits, devices and modules, and are simple in structure design, so that the cost is reduced greatly, the problems are solved, at the same time, the effective technical guarantee is provided for the extension and mounting of the intelligent parts and the peripheral parts, and accordingly, the device and the realization method of the present invention are suitable for being popularized and applied.

Description

technical field [0001] The invention relates to the technical field of fire protection, in particular to a method for realizing a device for realizing long-distance high-current drive of a fire-fighting bus. Background technique [0002] At present, in the fire alarm control system, the intelligent peripheral components all transmit data through the bus and the controller. Under normal circumstances, intelligent components and peripheral components are connected to the controller bus, and the cross-sectional area is usually selected to be greater than 1.0mm 2 The copper core twisted pair wire, the wiring distance is usually 100 ~ 3000m, because the twisted pair wire has a certain resistance value, when the wiring distance is greater than 1000m, the large current signal flowing on the bus will be distorted, resulting in bus line loss At this time, the current signal on the bus will become very small, which reduces the communication function of the bus and the ability to driv...

AI Technical Summary

Problems solved by technology

However, in the existing way, since a 4-wire system (two buses, 24V power lines) needs to be arranged during on-site wiring, it not only increases the work intensity and investment cost of the operator, but also the methods and means are old-fashioned and cannot allow The bus wiring distance has been effectively extended. Under the current trend of urbanization becoming more and more concentrated, the bottleneck of related technologies is becoming more and more obvious.

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