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Elevator voice intercom system

A voice intercom and elevator technology, applied in the elevator field, can solve the problems of high interference, voice analog signal distortion, affecting voice effect, etc., and achieve the effect of high anti-interference performance, reducing system cost and improving voice effect.

Inactive Publication Date: 2011-09-28
INVT ELEVATOR CONTROL TECH WUXI
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are defects in the existing elevator intercom system: the elevator car will move up and down very frequently, and the analog telephone line will bend back and forth with the up and down movement of the car. The telephone line is easily broken; in addition, the elevator shaft is a special airtight place, which is highly disturbing, and the anti-interference ability of the analog signal is poor during the transmission process, and the voice analog signal is easily distorted by external interference during the transmission process. Affects the voice effect; in order to prolong the service life of the intercom system and ensure the voice effect, special materials with high shielding ability and excellent flexibility must be used to make analog telephone lines, resulting in a substantial increase in the cost of the elevator intercom system

Method used

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] The invention discloses an elevator voice intercom system, which has good anti-interference ability and voice effect, and effectively reduces system cost.

[0025] see figure 1 , figure 1 It is a structural schematic diagram of an elevator voice intercom system disclosed by the present invention.

[0026] The system includes: a firs...

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Abstract

The invention discloses an elevator voice intercom system comprising a first anti-interference device arranged in an elevator car and a second anti-interference device arranged in an elevator machine room, wherein the first anti-interference device and the second anti-interference device are connected through travelling cables of an elevator. The elevator voice intercom system disclosed by the invention utilizes the existing travelling cables of the elevator as signal transmission media, and no analogue telephone line is required to be paved, thereby reducing the system cost; and in addition,voice signals to be transmitted are converted into digital signals, signals transmitted in the travelling cables are modulated signals obtained by using a digital signal modulated carrier, the modulated signals are demodulated to obtain the digital signals, and the digital signals have high anti-interference performance and are not easy to distort in the demodulating process, so that the voice effect can be improved.

Description

technical field [0001] The invention belongs to the technical field of elevators, in particular to an elevator voice intercom system. Background technique [0002] According to the mandatory regulations of the national standard, each elevator must be equipped with an intercom system to ensure the communication between the elevator car and the elevator machine room. [0003] The existing elevator intercom system mainly lays analog telephone lines between the elevator car and the elevator machine room, and realizes the intercom function through the transmission of voice analog signals. [0004] However, there are defects in the existing elevator intercom system: the elevator car will move up and down very frequently, and the analog telephone line will bend back and forth with the up and down movement of the car. The telephone line is easily broken; in addition, the elevator shaft is a special airtight place, which is highly disturbing, and the anti-interference ability of the...

Claims

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Application Information

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IPC IPC(8): H04B3/60H04Q5/24
Inventor 罗玺朱军周庆刘建辉
Owner INVT ELEVATOR CONTROL TECH WUXI
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