Calling/combined communication device

Abstract

The invention discloses a call / shared communication device used in explosive gas environment and non-hazardous area. The power control box in the non-hazardous area, the ordinary telephone station connected to the power supply control box, the explosion-proof equalizer, and the explosion-proof telephone station are connected to the power control box and the ordinary telephone station through communication cables. Its beneficial effects are: it fundamentally solves the unsolved problems of the communication system for many years, and provides an easy-to-use, safe and reliable, flexible expansion, reasonable design, wide application range, convenient wiring, and reliable sealing for the explosive gas hazard communication field. communication tool. Realize the call function, and can communicate with people anywhere in the factory enterprise.

Description

Technical field: [0001] The present invention relates to communication technology, is a two-way communication equipment, specifically, is a kind of call that can be used in areas 1, 2, IIA, IIB, T1 ~ T6 explosive gas environment and non-hazardous area where explosive gas occurs / shared communication device. Background technique: [0002] At present, the applicable environment of the existing communication system has certain limitations. It can only be used in non-hazardous areas. Each telephone station is equipped with a junction box, which is not only costly but also has a high failure rate. On-site maintenance is complicated and troublesome. The entire system must be stopped for maintenance and replacement. The current communication system mainly uses a single-channel shared line, which only allows one intercom line for two-way communication. When an emergency occurs, there will be a lot of inconvenience to the communication of all personnel or the communication of the c...

AI Technical Summary

Problems solved by technology

[0002] At present, the applicable environment of the existing communication system has certain limitations. It can only be used in non-hazardous areas. Its structure generally adopts a host type. Once the host in the master control room fails, the entire network system will not work normally.

Each telephone station is equipped with a junction box, which is not only costly but also has a high failure rate. On-site maintenance is complicated and troublesome. The entire system must be stopped for maintenance and replacement.

The current communication system mainly uses a single-channel shared line, which only allows one intercom line for two-way communication. When an emergency occurs, there will be a lot of inconvenience to the communication of all personnel or the communication of the control room.

In recent years, although there has been an upgrade from a single-use system to a multi-use system, it is necessary to re-distribute cables throughout the system, which is costly and time-consuming

In an environment with high noise and high reverberation, the call effect is not clear, and the communication system has weak anti-noise ability

Each telephone station mainly adopts the contact type on-hook method. Due to frequent use, the life of the contacts will be greatly reduced, and they must be replaced frequently, which brings inconvenience to the normal use of the system and is actually uneconomical.

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