A system and method for on-site emergency stop switch action prompting and reset reminding

Abstract

The application discloses a system and method for on-site emergency stop switch action prompting and reset reminding, which comprises a main control board, an emergency stop switch, a rising edge detector, a running contactor, two brake contactors, a door lock contactor, an emergency stop switch action indicator lamp and a buzzer. A first input point of the main control board is connected with a normally open contact point of the emergency stop switch, a second input point of the main control board is connected with the rising edge detector, a first output point of the main control board is connected with one end of a coil of the running contactor, a second output point of the main control board is connected with one end of a coil of the first brake contactor, a third output point of the main control board is connected with one end of a coil of the second brake contactor, the other end of the coil of the running contactor, the first brake contactor and the second brake contactor is connected with a normally open contact point of the door lock contactor, a fourth output point of the main control board is connected with the emergency stop switch action indicator lamp, and a fifth output point of the main control board is connected with the buzzer. The application has the functions of on-site emergency stop switch action prompting and reset reminding.

Description

TECHNICAL FIELD

[0001] The present application relates to the elevator technical field, specifically relates to a system and method for on-site emergency stop switch action prompt and reset reminder. BACKGROUND

[0002] In the existing design of the elevator, when the on-site maintenance personnel enters the shaft to maintain the elevator, the emergency stop switch must be first operated, and after the maintenance is completed, because of the lack of emergency stop switch operation reminder, the emergency stop switch is often forgotten to be reset, resulting in repeated work. The repeated work includes: the need to reopen the landing door, reset the emergency stop; or short-circuit the safety return circuit, complete the maintenance and then remove the short-circuit wire, and then reset the emergency stop switch, which has risks; or need to check which section of the safety return circuit is not connected, which is time-consuming and laborious. SUMMARY

[0003] The present application aims to overcome the shortcomings of the prior art, and provides a system and method for on-site emergency stop switch action prompt and reset reminder.

[0004] The technical scheme of the present application is as follows:

[0005] A system for on-site emergency stop switch action prompt and reset reminder, comprising a main control board, an emergency stop switch, a rising edge detector, a running contactor, a first brake contactor, a second brake contactor, a door lock contactor, an emergency stop switch action indicator lamp and a buzzer, the main control board is provided with a first input point, a second input point, a first output point, a second output point, a third output point, a fourth output point and a fifth output point, the first input point of the main control board is connected with the normally open contact of the emergency stop switch, the second input point of the main control board is connected with the rising edge detector, the first output point of the main control board is connected with one end of the coil of the running contactor, the second output point of the main control board is connected with one end of the coil of the first brake contactor, the third output point of the main control board is connected with one end of the coil of the second brake contactor, the other end of the coil of the running contactor, the first brake contactor and the second brake contactor is connected with the normally open contact of the door lock contactor, the fourth output point of the main control board is connected with the emergency stop switch action indicator lamp, and the fifth output point of the main control board is connected with the buzzer.

[0006] Further, the main control board is further provided with an input common point, a first passive output point, a second passive output point, a first output common point and a second output common point, the first input point, the second input point and the input common point of the main control board are arranged side by side, the first passive output point and the second passive output point of the main control board are arranged side by side, the first output point, the second output point, the third output point and the first output common point of the main control board are arranged side by side, and the fourth output point, the fifth output point and the second output common point of the main control board are arranged side by side.

[0007] Further, the emergency stop switch, the rising edge detector, the input common point of the main control board, the emergency stop switch action indicator, the buzzer, the second output common point of the main control board are connected with the emergency power charging circuit, and the door lock contactor and the first output common point of the main control board are connected with the rear end power supply of the safety door lock loop.

[0008] A method for on-site emergency stop switch action prompting and resetting, comprising the following steps:

[0009] S1, when the emergency stop switch is actuated, the first input point of the main control board has signal input, and the safety loop and the emergency power charging circuit are cut off;

[0010] S2, when the first input point of the main control board is detected to have signal input, the fourth output point of the main control board outputs, the emergency stop switch action indicator is lighted, and the emergency power charging circuit is disconnected to output DC 24V, which passes through the door lock loop and the first passive output point and the second passive output point of the main control board, and finally enters the second input point of the main control board through the rising edge detector;

[0011] S3, when the second input point of the main control board detects the rising edge signal from 0 to 1, and the first input point of the main control board is valid, the fifth output point of the main control board outputs, and drives the buzzer to sound;

[0012] S4, when the emergency stop switch is reset, the fourth output point and the fifth output point of the main control board stop outputting, the emergency stop switch action indicator is extinguished, and the buzzer stops beeping.

[0013] In step S1, the first passive output point and the second passive output point of the main control board are delayed for 2S to output.

[0014] Compared with the prior art, the present application has the beneficial effects that the present application has the on-site emergency stop switch action prompting and resetting reminding functions; when the on-site technician actuates the emergency stop switch, the emergency stop switch action indicator is lighted; when the door lock is switched from off to on, the buzzer sounds, thereby reminding the technician that the emergency stop switch is not reset; when the technician resets the emergency stop switch, the emergency stop switch action indicator is extinguished, and the buzzer stops beeping. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0016] Figure 1 It is a system composition schematic diagram of the present application;

[0017] Figure 2 The circuit diagram of the present application. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0019] In order to illustrate the technical solutions of the present application, the following specific examples are used to illustrate the technical solutions of the present application.

[0020] Embodiment

[0021] Please refer to Figure 1 , the embodiment provides a system for on-site emergency stop switch action prompt and reset reminder, which comprises a main control board, an emergency stop switch, a rising edge detector, a running contactor, a first brake contactor, a second brake contactor, a door lock contactor, an emergency stop switch action indicator lamp and a buzzer. The main control board is provided with a first input point, a second input point, an input common point, a first output point, a second output point, a third output point, a first output common point, a fourth output point, a fifth output point and a second output common point; the first input point, the second input point and the input common point of the main control board are arranged side by side, the first input point of the main control board is connected with the normally open contact point of the emergency stop switch, and the second input point of the main control board is connected with the rising edge detector; the first passive output point and the second passive output point of the main control board are arranged side by side; the first output point, the second output point, the third output point and the first output common point of the main control board are arranged side by side, one end of the coil of the running contactor is connected with the first output point of the main control board, one end of the coil of the first brake contactor is connected with the second output point of the main control board, and one end of the coil of the second brake contactor is connected with the third output point of the main control board; the other end of the coil of the running contactor, the first brake contactor and the second brake contactor is connected with the normally open contact point of the door lock contactor, which is used to avoid 24V emergency current into the contactor coil, and is safer; the fourth output point, the fifth output point and the second output common point of the main control board are arranged side by side, the fourth output point of the main control board is connected with the emergency stop switch action indicator lamp, and the fifth output point of the main control board is connected with the buzzer; the emergency stop switch, the rising edge detector, the input common point of the main control board, the emergency stop switch action indicator lamp, the buzzer and the second output common point of the main control board are all connected with the emergency power charging circuit, and the door lock contactor and the first output common point of the main control board are connected with the rear end power supply of the safety door lock loop.

[0022] Based on the system for on-site emergency stop switch action prompt and reset method, in combination with Figure 2 , the method comprises the following steps:

[0023] S1, when the technician action emergency stop switch, the first input point of the main control board has signal input, at the same time cut off the safety circuit and emergency power charging circuit, the first passive output point and the second passive output point of the main control board delay 2S output, ensure that the safety circuit voltage will not flow into the emergency power 24V output;

[0024] S2, when the first input point of the main control board is detected to have signal input, the fourth output point of the main control board outputs, the emergency stop switch action indicator light is on, at the same time the emergency power charging circuit (AC220V) is disconnected DC24V output, through the door lock circuit and the first passive output point, the second passive output point of the main control board, finally through the rising edge detector into the second input point (the rising edge is valid) of the main control board;

[0025] S3, when the second input point of the main control board detects the rising edge signal from 0 to 1 (that is, the door lock is from off to on, simulating the field maintenance personnel from the shaft state), and the first input point of the main control board is valid, the fifth output point of the main control board outputs, drives the buzzer to sound, reminds the technician that the emergency stop switch is not reset;

[0026] S4, when the technician resets the emergency stop switch, the fourth output point and the fifth output point of the main control board stop output, the emergency stop switch action indicator light is off, the buzzer stops buzzing.

[0027] The above is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A system for indicating and resetting the operation of an emergency stop switch on-site, characterized in that: The system includes a main control board, an emergency stop switch, a rising edge detector, a running contactor, a first brake contactor, a second brake contactor, a door lock contactor, an emergency stop switch operation indicator light, and a buzzer. The main control board has a first input point, a second input point, a first output point, a second output point, a third output point, a fourth output point, a fifth output point, an input common point, a first passive output point, a second passive output point, a first output common point, and a second output common point. The first input point of the main control board is connected to the normally open contact of the emergency stop switch. The second input point of the main control board is connected to the rising edge detector. The first output point of the main control board is connected to one end of the coil of the running contactor. The second output point of the main control board is connected to the coil of the first brake contactor. One end of the coil is connected; the third output point of the main control board is connected to one end of the coil of the second brake contactor; the other end of the coils of the running contactor, the first brake contactor, and the second brake contactor is connected to the normally open contact of the door lock contactor; the fourth output point of the main control board is connected to the emergency stop switch indicator light; the fifth output point of the main control board is connected to the buzzer; the first input point, the second input point, and the input common point of the main control board are arranged side by side; the first passive output point and the second passive output point of the main control board are arranged side by side; the first output point, the second output point, the third output point, and the first output common point of the main control board are arranged side by side; and the fourth output point, the fifth output point, and the second output common point of the main control board are arranged side by side.

2. The system for indicating and resetting the operation of an emergency stop switch as described in claim 1, characterized in that: The emergency stop switch, rising edge detector, input common point of the main control board, emergency stop switch action indicator, buzzer, and second output common point of the main control board are all connected to the emergency power charging line. The door lock contactor and the first output common point of the main control board are connected to the power supply at the back end of the safety door lock circuit.

3. A method for indicating and resetting the operation of an emergency stop switch as described in claim 2, characterized in that, Includes the following steps: S1. When the emergency stop switch is activated, a signal is input to the first input point of the main control board, which simultaneously cuts off the safety circuit and the emergency power charging line. S2. When a signal is detected at the first input point of the main control board, the fourth output point of the main control board outputs, the emergency stop switch action indicator light illuminates, and at the same time the emergency power charging line disconnects and outputs DC24V. This DC24V passes through the door lock circuit and the first and second passive output points of the main control board, and finally enters the second input point of the main control board through the rising edge detector. S3. When the second input point of the main control board detects a rising edge signal from 0 to 1, and the first input point of the main control board is valid, the fifth output point of the main control board outputs, driving the buzzer to sound. S4. When the emergency stop switch is reset, the fourth and fifth output points of the main control board stop outputting, the emergency stop switch action indicator light goes out, and the buzzer stops beeping.

4. A method for indicating and resetting the operation of an emergency stop switch on-site according to claim 3, characterized in that: In step S1, the first passive output point and the second passive output point of the main control board output after a 2-second delay.

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