CN112027838B

CN112027838B - Method for realizing door zone prompt through interphone system

Info

Publication number: CN112027838B
Application number: CN202010859175.3A
Authority: CN
Inventors: 黄凯东; 欧其斌; 梁军
Original assignee: Shanghai GIE EM Co Ltd
Current assignee: Shanghai GIE EM Co Ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2022-03-11
Anticipated expiration: 2040-08-24
Also published as: CN112027838A

Abstract

The invention discloses a method for realizing door zone prompting through an interphone system, which is characterized in that when a car is rescued and moved under the condition of power failure of the system, power is isolated and supplied through an internal power supply of the interphone of the car, and a flat layer switch installed on the car is conducted when the car passes through the door zone position, so that the interphone of the car is communicated with a machine room interphone, the machine room interphone is triggered to send a prompting signal that the car enters the door zone position, a rescuer is informed to stop the car, and related personnel in the car are rescued. When the elevator is rescued in case of power failure, the rescue door area position does not need to be confirmed through the white paint position on the steel wire rope in the machine room, or the door area position does not need to be prompted through the BUZZER in the control cabinet, and whether the lift car is located at the door area position or not can be prompted through an interphone system formed by the existing lift car interphone and the machine room interphone.

Description

Method for realizing door zone prompt through interphone system

Technical Field

The invention relates to the technical field of elevators, in particular to a method for realizing door zone prompting through an interphone system.

Background

When the elevator in the machine room is used for rescue in case of power failure, the position of a rescue door area is confirmed through the position of white paint on a steel wire rope in the machine room, and specifically, the running direction and speed of the elevator are confirmed through checking the steel wire rope.

When the elevator without the machine room has power failure and is rescued, the door zone position is prompted through the BUZZER of the control cabinet door zone, and specifically, the direction and the speed of the elevator running are confirmed by checking the steel wire rope through the perspective window of the control cabinet.

The above method has the following problems:

1. after the elevator is installed, white paint needs to be additionally coated on each layer of the steel wire rope, and the paint is dropped or oil pollution is caused after a long time, so that the confirmation is difficult. If the steel wire rope needs to be re-painted for replacement, the labor and time are wasted and the clearness is not clear.

2. The power through system emergency rescue and through switching on when door district switch rescue on elevator system's the car passes through door district position, the inside BZ suggestion door district position of switch-on switch board, after elevator car arrived door district position, this system can lead to system's power and emergency power supply to be earthed together, leads to bad interference and elevator system reliability to reduce.

Disclosure of Invention

The invention aims to solve the technical problem of providing a method for realizing door zone prompting through an interphone system aiming at the defects of the existing rescue method of an elevator with a machine room and an elevator without a machine room.

The technical problem to be solved by the invention can be realized by the technical scheme that:

a method for realizing door zone prompting through an interphone system is characterized in that when a car is moved in rescue, power supply is isolated through an internal power supply of the car interphone, and the elevator car is conducted when passing through a door zone position by utilizing a flat switch installed on the car, so that the car interphone is communicated with a machine room interphone, the machine room interphone is triggered to send a prompting signal that the car enters the door zone position, a rescuer is informed to stop the car, and related personnel in the car are rescued.

In a preferred embodiment of the invention, a rescue button, a door zone loudspeaker or/and a door zone indicator lamp are/is arranged on the machine room interphone, wherein the rescue button is used for establishing communication connection with the car interphone, the door zone loudspeaker is used for sending out a prompt sound signal that the car enters the door zone position, and the door zone indicator lamp is used for sending out a prompt light signal that the car enters the door zone position.

In a preferred embodiment of the invention, the machine room interphone is in communication connection with the car interphone through the machine room control board and the car control board.

In a preferred embodiment of the invention, a machine room control board provides a system communication interrupt signal and a system power failure signal for an MCU module in the machine room interphone; the rescue button is connected with a signal input end on an MCU module in the machine room interphone, and a door zone loudspeaker or/and a door zone indicator lamp on the machine room interphone are/is connected with a signal output end on the MCU module in the machine room interphone.

In a preferred embodiment of the invention, the DC/DC isolation module in the car interphone provides a set of isolated power for the leveling switch on the car, which aims to avoid the adverse effect of the interphone power on the system power in case of failure.

In a preferred embodiment of the invention, the car interphone outputs a door zone signal to the machine room interphone through an optical coupling isolation circuit of the car interphone.

By adopting the technical scheme, when the elevator is rescued in a power failure, the rescue door area position does not need to be confirmed through the white paint position on the steel wire rope in the machine room, or the door area position does not need to be prompted through the BUZZER in the control cabinet, and whether the elevator car is at the door area position or not can be prompted through an interphone system formed by the existing elevator car interphone and the machine room interphone.

Drawings

Fig. 1 is a loop diagram of an intercom rescue door zone prompting system of the present invention.

Fig. 2 is an electrical schematic diagram between the car interphone and the machine room interphone of the invention.

Detailed Description

The invention is further described below in conjunction with the appended drawings and detailed description.

Referring to fig. 1 and 2, the room interphone 10 shown in the figures includes an MCU module U2, the room control board 20 provides the MCU module U2 with a system communication interrupt signal 1 and a system power failure signal 2, the door zone indicator light 11 or/and the door zone speaker 12 in the room interphone 10 are connected to a signal output terminal of the MCU module U2, and the rescue button 13 is connected to a signal input terminal of the MCU module.

The MCU module U2 in the machine room interphone 10 is in communication connection with the MCU module U1 in the car interphone 40 through the flat cable 30. A microphone MIC 14 and a rescue light 15 are also provided in the room interphone 10.

A charging plate 51 in an interphone power supply 50 of the car interphone 40 is connected with a battery 52, the charging plate 51 outputs power sources 24V +, 24V-to supply power to a DC/DC isolation module U3, the DC/DC isolation module U3 provides a group of isolation power sources D24V, the isolation power sources D24V are connected to a leveling switch K1 on a car through a double-link switch RY1 in the car interphone 40 and used by a leveling switch K1 on the car, and a system power source + is connected to a loop between the isolation power source D24V and the leveling switch K1. In addition, the power supply 24V + is connected with the collector of a triode Q1, the 24V-is connected with the emitter of a triode Q1, the base of a triode Q1 and the MCU module U1 in the car interphone 40, and the aim is to avoid the adverse effect of the interphone power supply 50 in the car interphone 40 on the system power supply when the fault occurs.

The leveling switch K1 inputs the system door zone signal into the MCU module U1 of the car interphone 40 through the duplex switch RY1 and the optical coupler PH1, and then inputs the system door zone signal into the MCU module U2 of the machine room interphone 10 through the MCU module U1 of the car interphone 40, the car control board 50 and the flat cable 30.

When the system is in a power-off state, the car rescue method comprises the following steps:

1. when the system is out of power and does not have a system RS485 communication signal, a rescue button 13 on the machine room interphone 10 is pressed;

2. after the machine room interphone judges that the 3 conditions (system is free of power, system RS485 communication signals and the rescue button 13 on the machine room interphone 10 is pressed down) are all met, the machine room interphone 10 informs the car interphone 40 through the interphone communication system, the MCU module U1 of the car interphone 40 outputs to enable the dual switch RY1-A contact in the car interphone 40 to be closed, at the moment, the elevator rescue starts, and the car slowly slides in the elevator;

3. because the lift car is provided with the leveling switch K1, when the rescue slide of the lift arrives at the door zone, the leveling switch K1 is switched on;

4. after the isolated power supply D24V of the car interphone 40 is conducted through the duplex switch RY1 and the leveling switch K1, the isolated optocoupler PH1 outputs conduction, and a system door zone arrival signal is output; the system door zone arrival signal is input into the MCU module U1 of the car interphone 40;

5. the processed signals are sent to the MCU module U2 of the machine room interphone 10 through the car interphone 40 after being processed by the MCU module U1, and door area prompting sounds are output by a door area loudspeaker 12 of the machine room interphone 10 or/and door area prompting light signals are output by a door area indicator lamp 11 of the machine room interphone 40.

Claims

1. A method for realizing door zone prompting through an interphone system is characterized in that when a system is powered off to rescue a moving car, power is isolated and supplied through an internal power supply of the car interphone, and a leveling switch installed on the car is conducted when the car passes through a door zone position, so that the car interphone is communicated with a machine room interphone, the machine room interphone is triggered to send a prompting signal that the car enters the door zone position, a rescuer is informed to stop the car, and related personnel in the car are rescued;

be provided with rescue button, door district loudspeaker or/and door district pilot lamp on the computer lab intercom, wherein rescue button is used for establishing the communication connection with the car intercom, and door district loudspeaker are used for sending the suggestion sound signal that the car has got into the door district position, door district pilot lamp is used for sending the suggestion light signal that the car has got into the door district position.

2. The method for implementing door zone prompting through the interphone system as claimed in claim 1, wherein the interphone of the machine room establishes communication connection with the car interphone through the machine room control board and the car control board.

3. The method for realizing the door zone prompting through the interphone system as claimed in claim 2, wherein a machine room control board provides a system communication interrupt signal and a system power failure signal for an MCU module in the machine room interphone; the rescue button is connected with a signal input end on an MCU module in the machine room interphone, and a door zone loudspeaker or/and a door zone indicator lamp on the machine room interphone are/is connected with a signal output end on the MCU module in the machine room interphone.

4. The method as claimed in claim 1, wherein the DC/DC isolation module in the car interphone provides a set of isolated power for the leveling switch on the car, so as to avoid the adverse effect of the interphone power on the system power in case of failure.

5. The method for implementing door zone prompting through the interphone system as claimed in claim 1, wherein the car interphone outputs the door zone signal communication to the machine room interphone through its own optical coupling isolation circuit.