A safety touchpad fault detection method and apparatus

Abstract

The application discloses a kind of safety touch plate fault detection method and device, through accurate control safety touch plate lifting opportunity and signal shielding in the process that elevator closes door, effectively avoid the elevator failure caused by misoperation, improve the operation safety, after closing door in place, utilize the OUT relay output signal shielding touch plate signal driven by door machine board, ensure that elevator stable operation, reduce potential risk, simultaneously, this method combines door width data, touch plate lifting mark and multiple parameters such as closing door in place signal, can more accurately identify safety touch plate failure, in addition, by accumulating the fault number of different floors, and when reaching set threshold, output fault code, realize reliable detection and early warning to failure, which provides important data support for elevator maintenance management, so that maintenance personnel can quickly locate the problem and take targeted measures, improve maintenance efficiency and accuracy.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of elevator fault detection, in particular to a safety touch plate fault detection method and device. BACKGROUND

[0002] In modern elevator systems, safety touch plates are installed on the edges of elevator car doors as an important safety device. Their main function is to quickly respond and trigger the door opening mechanism if a passenger or object accidentally touches the touch plate during the closing process, thereby preventing injury accidents. However, as the elevator usage time increases and various external factors affect, the safety touch plate and its related circuit may malfunction, which may cause the elevator to fail to respond to the touch plate signal, increasing the risk of passenger injury.

[0003] Currently, the detection of safety touch plate faults in elevator systems mainly relies on regular maintenance and inspection, but this method not only consumes time and effort, but also may not be able to timely detect some potential faults, especially when the elevator is frequently used or in harsh environments, the failure rate of safety touch plates and their related circuits may increase, making traditional detection methods inadequate.

[0004] In addition, the existing elevator control system often has a simple processing of safety touch plate signals, lacking sufficient fault judgment and shielding mechanisms. When the safety touch plate fails, it may cause false positives or false negatives, which not only affects the normal operation of the elevator, but also may cause unnecessary panic and safety hazards to passengers. SUMMARY

[0005] Therefore, the present application proposes a safety touch plate fault detection method and device, which can effectively solve the defects of the prior art that mainly rely on regular maintenance and inspection, and the simple processing of safety touch plate signals.

[0006] The technical solution of the present application is as follows:

[0007] A safety touch plate fault detection method, comprising:

[0008] When the elevator is powered on and the door is opened, the door machine plate learns the opening width and confirms the current door width data of the elevator;

[0009] When the elevator normally closes and the distance to the closed position is the first preset distance, the car door lifting device will lift the safety touch plate to avoid collision with the opposite car door. The touch plate switch will act at the same time, and the touch plate signal will be transmitted to the control board and the door machine plate;

[0010] The door machine board sends a touch plate lifting mark to the control board according to current door width data when the elevator is normally closed and the distance to the closed-in position is a second preset distance, wherein the second preset distance is greater than the first preset distance;

[0011] The control board temporarily shields the touch plate signal after receiving the touch plate lifting mark transmitted by the door machine board and filtering for N seconds;

[0012] After the elevator door is closed to the position, the door machine board drives the self-owned OUT relay output signal to shield the touch plate signal and transmits a short-circuit mark to the control board;

[0013] When the elevator is closed, if the touch plate lifting mark and the closed-in signal transmitted by the door machine board are valid, the touch plate signal is always invalid, the system fault mark is established, and when the number of safety touch plate fault accumulations at different floors is greater than M times, the system detects the safety touch plate fault and outputs a fault code.

[0014] As a further optional solution of the safety touch plate fault detection method, the method further comprises:

[0015] When the safety touch plate fault is confirmed, a safety touch plate fault report is generated, when the safety touch plate fault is confirmed, a safety touch plate fault report is generated, if the elevator is not configured with a light curtain, the elevator will immediately stop service and open the door to standby, if the elevator is configured with a light curtain, it is switched to a mode of relying only on the light curtain as an obstacle detection means, and continues to operate in a preset speed closing mode, and when the safety touch plate fault exceeds a preset time and is not restored, the elevator is controlled to stop service and open the door to standby.

[0016] As a further optional solution of the safety touch plate fault detection method, the safety touch plate is arranged in the elevator car, and when the elevator is opened or not completely closed, the safety touch plate is exposed to the door sill of the car door, when a person or object touches the touch plate, the touch plate is lifted up, the touch plate switch is actuated and transmitted to the door machine board and the control board, and the control board controls the door to open.

[0017] A safety touch plate fault detection device comprises:

[0018] A safety touch plate is arranged in the elevator car and is used to expose the door sill of the car door when the elevator is opened or not completely closed, and is actuated when touched;

[0019] A touch plate switch is connected to the safety touch plate and is used to detect the actuation of the safety touch plate and transmit a signal;

[0020] A control module comprises a door machine board and a control board, and is used to receive the signal transmitted by the touch plate switch and control the opening and closing of the elevator door according to the signal;

[0021] A car door lifting device is arranged in the car door and is used to lift the safety touch plate when the elevator is normally closed and the distance to the closed-in position is a first preset distance.

[0022] A fault detection module is configured to determine whether the safety touch plate is faulty according to the received signal and preset logic, and output a fault code when the fault accumulates to a preset number of times.

[0023] As a further optional solution of the safety touch plate fault detection device, the device further comprises:

[0024] A light curtain, which, together with the safety touch plate, constitutes a door closing protection system of the elevator, continues to operate in a preset speed closing mode when the safety touch plate is detected to be faulty, and when the safety touch plate fault exceeds a preset time and is not recovered, the elevator is controlled to stop service and open the door to standby.

[0025] As a further optional solution of the safety touch plate fault detection device, the device further comprises:

[0026] A signal shielding module is configured to temporarily shield the touch plate signal when the touch plate pull-up mark and the door closing in place signal are received.

[0027] A computing device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the safety touch plate fault detection method described above when executing the computer program.

[0028] A computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the safety touch plate fault detection method described above.

[0029] The beneficial effects of the present application are: by accurately controlling the pull-up timing and signal shielding of the safety touch plate during the closing process of the elevator, the method effectively avoids elevator failure or shutdown caused by false action of the safety touch plate, thereby improving the overall operation safety of the elevator, and after the door is closed in place, the touch plate signal is shielded by the OUT relay output signal of the door machine plate drive, ensuring the stable operation of the elevator in the closed state, reducing the potential risks caused by touch plate signal interference, the method combines door width data, touch plate pull-up mark, door closing in place signal and other parameters for comprehensive judgment, which can more accurately identify the safety touch plate fault, by accumulating the fault times of different floors and outputting the fault code when the set threshold M is reached, the method realizes reliable detection and early warning of the safety touch plate fault, which helps to take timely measures for repair, by recording the number of safety touch plate faults and outputting the fault code, the method provides important data support for the maintenance and management of the elevator, the maintenance personnel can quickly locate the problem according to the fault code and take targeted maintenance measures, thereby improving the maintenance efficiency and accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0031] Fig. 1 A flowchart of a safety touch plate fault detection method of the present application;

[0032] Fig. 2 A composition diagram of a safety touch plate fault detection device of the present application;

[0033] Fig. 3 A protocol diagram of a touch plate lifting mark in the present application. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0035] REFERENCE Figs. 1 to 3 A safety touch plate fault detection method, comprising:

[0036] When the elevator opens the door after power-on, the door machine plate learns the opening width and confirms the door width data of the current elevator;

[0037] When the elevator normally closes the door and reaches a first preset distance from the closed door, the car door lifting device lifts the safety touch plate to avoid the touch plate from colliding with the opposite car door. At the same time, the touch plate switch operates and transmits the touch plate signal to the control board and the door machine plate;

[0038] The door machine plate sends a touch plate lifting mark to the control board according to the current door width data when the elevator normally closes the door and reaches a second preset distance from the closed door, wherein the second preset distance is greater than the first preset distance;

[0039] The control board temporarily shields the touch plate signal after receiving the touch plate lifting mark transmitted by the door machine plate and filtering for N seconds;

[0040] After the elevator door is closed to the position, the door machine plate drives the OUT relay output signal to shield the touch plate signal and transmits a short-circuit mark to the control board;

[0041] When the elevator is closing the door, if the touch plate pull-up flag transmitted by the door machine plate and the door closing in place signal are valid, the touch plate signal is always invalid, the system fault flag is established, and when the number of safety touch plate fault occurrences at different floors is greater than M times, the system detects the safety touch plate fault and outputs a fault code.

[0042] In this embodiment, by accurately controlling the pull-up timing and signal shielding of the safety touch plate during the closing process of the elevator, the method effectively avoids the elevator failure or shutdown caused by the false action of the safety touch plate, thereby improving the overall operation safety of the elevator. After the door is closed in place, the touch plate signal is shielded by the OUT relay output signal driven by the door machine plate, ensuring the stable operation of the elevator in the closed state, reducing the potential risks caused by touch plate signal interference. This method combines door width data, touch plate pull-up flag, door closing in place signal and other parameters for comprehensive judgment, which can more accurately identify safety touch plate faults. By accumulating the number of faults at different floors and outputting a fault code when the set threshold M is reached, the method realizes reliable detection and early warning of safety touch plate faults, which helps to take timely measures for repair. By recording the number of safety touch plate faults and outputting a fault code, the method provides important data support for the maintenance and management of the elevator. Maintenance personnel can quickly locate the problem according to the fault code and take targeted maintenance measures, thereby improving maintenance efficiency and accuracy.

[0043] It should be noted that N and M can be customized by the user as needed.

[0044] Preferably, the method further comprises:

[0045] When the safety touch plate fault is confirmed, a safety touch plate fault report is generated. When the safety touch plate fault is confirmed, a safety touch plate fault report is generated. If the elevator is not configured with a light curtain, the elevator will immediately stop service and open the door to standby. If the elevator is configured with a light curtain and switches to a mode that relies only on the light curtain as an obstacle detection means, it continues to operate in the preset speed door closing mode. When the safety touch plate fault exceeds the preset time and has not recovered, the elevator is controlled to stop service and open the door to standby.

[0046] In this embodiment, when the safety touch plate fault is confirmed, a safety touch plate fault report can be generated immediately, which helps maintenance personnel to learn about the fault information in time and handle it, and at the same time, the mode of relying only on the light curtain as the obstacle detection means is switched to, and the door is continued to be closed at the preset speed, the light curtain as a reliable obstacle detection device can discover and respond to any obstacle in time during the door closing process, thereby ensuring the safety of passengers; the technical scheme not only provides a detection and reporting mechanism for the safety touch plate fault, but also designs a corresponding response measure, after the fault is confirmed, the system can continue to run according to the preset strategy instead of stopping service immediately, which reduces the elevator downtime caused by the fault and improves the running efficiency of the elevator; through timely detection and reporting of the safety touch plate fault and taking corresponding response measures, the technical scheme can reduce the prolonged waiting time or inconvenience of passengers caused by the fault, thereby improving the riding experience and satisfaction of passengers; in the case that the safety touch plate fault exceeds the preset time and is not restored, the elevator can be controlled to stop service and open the door, which avoids potential safety risks caused by long-term fault and enhances the reliability and stability of the system; the generated safety touch plate fault report provides important fault information for maintenance personnel, which helps them to quickly locate the problem and take targeted maintenance measures, thereby improving the efficiency and accuracy of maintenance and reducing maintenance cost.

[0047] Preferably, the safety touch plate is arranged in the elevator car and exposed to the sill of the car door when the elevator is opening or not fully closed, and when a person or object touches the touch plate, the touch plate will be lifted up, the touch plate switch will act and transmit to the door machine board and the control board, and the control board controls the door to open.

[0048] In this embodiment, the safety touch plate is arranged in the elevator car and can be exposed to the sill of the car door when the elevator is opening or not fully closed, forming an effective obstacle detection area, when a person or object touches the touch plate, the touch plate will be lifted up and trigger the touch plate switch to act, this mechanism can quickly respond to any accidental touch and ensure the safety of passengers and objects, after the touch plate switch acts, a signal is transmitted to the door machine board and the control board, and the control board controls the elevator door to open immediately, thereby avoiding the situation of trapping people or objects and greatly reducing the risk of accidents; as a physical obstacle detection device, the safety touch plate has a simple and reliable working principle and is not affected by other systems of the elevator, through close cooperation with the door machine board and the control board, the safety touch plate can provide continuous safety protection during the operation of the elevator and ensure the stable operation of the elevator; the existence of the safety touch plate makes passengers feel more secure and at ease when riding the elevator, and when accidental touch occurs, the elevator door can be quickly opened, avoiding the panic and discomfort of passengers and improving the riding experience of passengers; as an independent device, the safety touch plate is relatively simple to maintain and repair, when a fault occurs, maintenance personnel can quickly locate and repair the problem to ensure the timely recovery of the elevator to normal operation.

[0049] A safety touch plate fault detection device, comprising:

[0050] A safety touch plate configured in an elevator car for exposing a car door sill when the elevator is opened or not completely closed, and moving when touched;

[0051] A touch plate switch connected with the safety touch plate for detecting the movement of the safety touch plate and transmitting a signal;

[0052] A control module including a door machine plate and a control plate for receiving the signal transmitted by the touch plate switch and controlling the opening and closing of the elevator door according to the signal;

[0053] A car door lifting device configured in the car door for lifting the safety touch plate when the elevator is normally closed and the distance from the closed door to the in-place position is a first preset distance;

[0054] A fault detection module for determining whether the safety touch plate has a fault according to the received signal and a preset logic, and outputting a fault code when the fault accumulates to a preset number of times.

[0055] Preferably, the device further comprises:

[0056] An optical curtain that, together with the safety touch plate, constitutes a door closing protection system of the elevator, and when the elevator detects a safety touch plate fault, continues to operate in a preset speed closing mode according to a mode of the optical curtain as an obstacle detection means, and when the safety touch plate fault exceeds a preset time and has not recovered, controls the elevator to stop service and open the door to standby.

[0057] Preferably, the device further comprises:

[0058] A signal shielding module for temporarily shielding the touch plate signal when receiving the touch plate lifting mark and the door closing in-place signal.

[0059] A computing device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the safety touch plate fault detection method described above.

[0060] A computer readable storage medium, wherein the storage medium stores a computer program, and the computer program is executed by a processor to implement the steps of the safety touch plate fault detection method described above.

[0061] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method for detecting safety contact plate malfunctions, characterized in that, include: When the elevator opens its doors after being powered on, the door operator learns the door opening width and confirms the current door width data of the elevator. When the elevator door is closed normally and is within the first preset distance of the closed position, the car door lifting device will lift the safety contact plate to prevent the contact plate from colliding with the opposite car door. At the same time as the safety contact plate is lifted, the contact plate switch will be activated and a contact plate signal will be transmitted to the control board and the door operator board. Based on the current door width data, when the elevator door is normally closed and is within a second preset distance from the closed position, the door operator sends a touch panel pull mark to the control panel, wherein the second preset distance is greater than the first preset distance; After receiving the touch panel lift mark transmitted from the door operator board and filtering it for N seconds, the control board will temporarily block the touch panel signal. After the elevator door closes to the correct position, the OUT relay built into the door operator board outputs a signal to shield the touch panel signal and transmits the short-circuit mark to the control board. When the elevator door is closing, if the door operator receives a valid touch panel lift mark and door closed signal, but the touch panel signal remains invalid, a system fault flag is set. When the cumulative number of safety touch panel faults on different floors exceeds M, the system detects a safety touch panel fault and outputs a fault code.

2. The method for detecting safety contact plate faults according to claim 1, characterized in that, The method further includes: Once a safety touch panel malfunction is confirmed, a safety touch panel malfunction report is generated. If the elevator is not equipped with a light curtain, the elevator will immediately stop service and open the door for standby. If the elevator is equipped with a light curtain, it will switch to a mode that relies solely on the light curtain as an obstacle detection method and continue to operate at a preset door closing speed. If the safety touch panel malfunction is not resolved within a preset time, the elevator will be controlled to stop service and open the door for standby.

3. The method for detecting safety contact plate faults according to claim 2, characterized in that, The safety touch panel is installed inside the elevator car. When the elevator door is open or not fully closed, the safety touch panel protrudes from the door sill. When a person or object touches the touch panel, the touch panel will be lifted up, the touch panel switch will be activated and transmitted to the door operator panel and the control panel, and the control panel will control the door to open in reverse.

4. A safety contact plate fault detection device, characterized in that, The device is used to implement the steps of the safety contact plate fault detection method according to any one of claims 1-3, including: Safety touch panel, installed inside the elevator car, is used to expose the door sill when the elevator door is open or not fully closed, and to activate when touched. The contact switch, connected to the safety contact plate, is used to detect the action of the safety contact plate and transmit signals; The control module, including the door operator board and the control board, is used to receive signals transmitted by the touch panel switch and control the opening and closing of the elevator door according to the signals; The car door lifting device is installed inside the car door and is used to lift the safety contact plate when the elevator door is normally closed and is within the first preset distance from the closed position. The fault detection module is used to determine whether the safety contact plate is faulty based on the received signals and preset logic, and outputs a fault code when the cumulative number of faults reaches a preset number.

5. A safety contact plate fault detection device according to claim 4, characterized in that, The device further includes: The light curtain, together with the safety touch panel, constitutes the elevator's door closing protection system. When the elevator detects a safety touch panel malfunction, it continues to operate at a preset door closing speed based on the light curtain's obstruction detection method. If the safety touch panel malfunction is not resolved within a preset time, the elevator is controlled to stop service and open for standby.

6. A safety contact plate fault detection device according to claim 5, characterized in that, The device further includes: The signal shielding module is used to temporarily shield the touch panel signal when it receives the touch panel lift mark and the door close signal.

7. A computing device, characterized in that, The method includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the safety touch panel fault detection method according to any one of claims 1-3.

8. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, which, when executed by a processor, implements the steps of the safety touch panel fault detection method according to any one of claims 1-3.

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