A digital-analog hybrid five-party intercom system

Abstract

The invention discloses a digital-analog mixed five-party intercom system, which includes four computer room intercom extensions, an A / D conversion module and a management center module, and is characterized in that the computer room intercom extension is equipped with a first power supply module, Car top extension, car extension and pit bottom extension, the output end of the first power supply module is connected to the machine room intercom extension, car top extension, car extension and pit bottom extension, and the machine room intercom extension, car top extension, The car extension and the pit bottom extension are connected to each other in turn. The A / D conversion module is used to convert the input analog signal into an output digital signal. The output of the A / D conversion module is connected to the four machine room intercom extensions. , the management center module includes a management center host, a management host, a mobile handset, a management center computer and a second power supply module. The invention has the advantages of flexible networking, stable communication, clear voice, strong expansibility, long transmission distance, low power consumption, low failure rate and the like.

Description

technical field [0001] The invention relates to the technical field of five-party intercom, in particular to a digital-analog hybrid five-party intercom system. Background technique [0002] Although many elevators on the market now use the five-party intercom system, the traditional five-party intercom system using analog signals not only has poor call quality and is susceptible to interference, but also the lines must be connected separately. If there are many elevators When it is used, it will cause a large degree of waste of lines, and it is not easy to overhaul; digital signal processing is expensive, wiring is complicated, and the cost is high. In view of this, the present invention develops a digital-analog mixed five-party intercom system, which can well solve the common and difficult problems described above. Contents of the invention [0003] The purpose of the present invention is to solve the shortcomings in the prior art, and propose a digital-analog hybrid f...

AI Technical Summary

Problems solved by technology

[0002] Although many elevators on the market now use the five-party intercom system, the traditional five-party intercom system using analog signals not only has poor call quality and is susceptible to interference, but also the lines must be connected separately. If there are many elevators When it is used, it will cause a large degree of waste of lines, and it is not easy to overhaul; digital signal processing is expensive, wiring is complicated, and the cost is high

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