Safety touch panel fault detection method and device

Abstract

According to the safety touch panel fault detection method and device, by accurately controlling the lifting time and signal shielding of a safety touch panel in the elevator door closing process, elevator faults caused by misoperation are effectively avoided, the operation safety is improved, after the door is closed in place, an OUT relay driven by a door machine panel outputs signals to shield touch panel signals, and the safety of the elevator is improved. According to the method, a plurality of parameters such as door width data, touch panel lifting marks and door closing in-place signals are combined, safety touch panel faults can be recognized more accurately, in addition, the fault times of different floors are accumulated, fault codes are output when the set threshold value is reached, reliable detection and early warning of the faults are achieved, and the safety of the elevator is improved. Important data support is provided for elevator maintenance management, maintenance personnel can quickly position problems and take targeted measures, and maintenance efficiency and accuracy are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator fault detection, and in particular to a safety touch panel fault detection method and device. Background Art

[0002] In modern elevator systems, safety touch panels are an important safety device and are usually installed on the edge of elevator doors. Their main function is that if a passenger or an object accidentally touches the touch panel during the elevator door closing process, the touch panel will respond quickly and trigger the door opening mechanism to prevent pinching accidents. However, as the elevator is used for a longer time and is affected by various external factors, the safety touch panel and its related circuits may malfunction, which may cause the elevator to fail to respond to the touch panel signal normally, thereby increasing the risk of passenger injury.

[0003] At present, the detection of safety touch panel failures in elevator systems mainly relies on regular maintenance and inspections. However, this method is not only time-consuming and labor-intensive, but may also fail to detect some potential failures in a timely manner. Especially when the elevator is frequently used or in a harsh environment, the failure rate of the safety touch panel and its related circuits may increase, and traditional detection methods are unable to cope with the situation.

[0004] In addition, in existing elevator control systems, the processing of safety touch panel signals is often relatively simple, lacking sufficient fault judgment and shielding mechanisms. When the safety touch panel fails, false alarms or missed alarms may occur, which will not only affect the normal operation of the elevator, but may also cause unnecessary panic and safety hazards to passengers. Summary of the invention

[0005] In view of this, the present invention proposes a safety touch panel fault detection method and device, which can effectively solve the defects of the prior art that the method mainly relies on regular maintenance and inspection, and the safety touch panel signal processing is relatively simple.

[0006] The technical solution of the present invention is achieved in this way:

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

[0008] When the elevator opens the door after power-on, the door machine board learns the door opening width and confirms the current elevator door width data;

[0009] When the elevator door is closed normally and is at the first preset distance from the door closing position, the car door lifting device will lift the safety touch plate to prevent the touch plate from colliding with the opposite car door. When the safety touch plate is lifted, the touch plate switch will be actuated and the touch plate signal will be transmitted to the control panel and the door machine panel.

[0010] The door machine board sends a touch panel pull mark to the control board according to the current door width data when the elevator door is closed normally and is at a second preset distance from the door closing position, wherein the second preset distance is greater than the first preset distance;

[0011] After receiving the touch panel pull mark transmitted by the door machine board and filtering it for N seconds, the control panel will temporarily block the touch panel signal;

[0012] After the elevator door is fully closed, the door machine board drives the OUT relay output signal to shield the touch panel signal and transmit the short-circuit mark to the control board;

[0013] When the elevator door is closing, if the touch panel pull-up mark and door closing signal transmitted by the door machine panel are valid, the touch panel signal is always invalid and the system fault mark is established. When the cumulative number of safety touch panel failures on different floors is greater than M times, the system detects the safety touch panel failure and outputs a fault code.

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

[0015] When the safety touch panel failure is confirmed, a safety touch panel failure report is generated. If the elevator is not equipped with a light curtain, the elevator will immediately stop service and open the door to wait. If the elevator is equipped with a light curtain, it will switch to a mode that only relies on the light curtain as a means of obstacle detection and continue to operate with the door closed at a preset speed. When the safety touch panel failure exceeds the preset time and is not restored, the elevator will be controlled to stop service and open the door to wait.

[0016] As a further optional scheme for the safety touch panel fault detection method, the safety touch panel is arranged in the elevator car. When the elevator door is open or not completely closed, the safety touch panel is exposed from the door threshold. 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 machine panel and the control panel, and the control panel controls the door to open in the opposite direction.

[0017] A safety touch panel fault detection device, comprising:

[0018] The safety touch panel is installed in the elevator car and is used to expose the door threshold when the elevator door is open or not completely closed, and it will operate when touched;

[0019] A touch panel switch, connected to the safety touch panel, is used to detect the movement of the safety touch panel and transmit a signal;

[0020] The control module includes a door machine panel and a control panel, which is used to receive the signal transmitted by the touch panel switch and control the opening and closing of the elevator door according to the signal;

[0021] The car door lifting device is arranged in the car door and is used to lift the safety touch plate when the elevator door is closed normally and is at a first preset distance from the closing position;

[0022] The fault detection module is used to determine whether the safety touch panel has a fault based on the received signal and preset logic, and output a fault code when the cumulative number of faults reaches a preset number.

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

[0024] The light curtain and the safety touch panel together constitute the door closing protection system of the elevator. When the elevator detects a safety touch panel failure, the elevator continues to operate at a preset speed with the door closed according to the mode of the light curtain as an obstacle detection means. When the safety touch panel failure exceeds the preset time and is not restored, the elevator is controlled to stop service and open the door for standby.

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

[0026] The signal shielding module is used to temporarily shield the touch panel signal when receiving the touch panel lifting mark and the door closing position signal.

[0027] A computing device comprises 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 panel fault detection method when executing the computer program.

[0028] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the safety touch panel fault detection method are implemented.

[0029] The beneficial effects of the present invention are as follows: by accurately controlling the lifting timing and signal shielding of the safety touch panel during the elevator door closing process, the method effectively avoids elevator failure or shutdown caused by malfunction of the safety touch panel, thereby improving the overall operation safety of the elevator; after the door is fully closed, the touch panel signal is shielded by the output signal of the OUT relay driven by the door machine board, thereby ensuring the stable operation of the elevator in the door closed state and reducing the potential risks caused by the interference of the touch panel signal; the method combines multiple parameters such as door width data, touch panel lifting mark, door closed position signal for comprehensive judgment, and can more accurately identify the safety touch panel failure; by accumulating the number of failures on 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 panel failure, and helps to take timely measures to repair it; by recording the number of safety touch panel failures 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 THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of a flow chart of a safety touch panel fault detection method of the present invention;

[0032] Figure 2 It is a schematic diagram of the composition of a safety touch panel fault detection device of the present invention;

[0033] Figure 3 It is a protocol diagram of the touch panel lifting mark in the present invention. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] refer to Figures 1 to 3 , a safety touch panel fault detection method, comprising:

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

[0037] When the elevator door is closed normally and is at the first preset distance from the door closing position, the car door lifting device will lift the safety touch plate to prevent the touch plate from colliding with the opposite car door. When the safety touch plate is lifted, the touch plate switch will be actuated and the touch plate signal will be transmitted to the control panel and the door machine panel.

[0038] The door machine board sends a touch panel pull mark to the control board according to the current door width data when the elevator door is closed normally and is at a second preset distance from the door closing position, wherein the second preset distance is greater than the first preset distance;

[0039] After receiving the touch panel pull mark transmitted by the door machine board and filtering it for N seconds, the control panel will temporarily block the touch panel signal;

[0040] After the elevator door is fully closed, the door machine board drives the OUT relay output signal to shield the touch panel signal and transmit the short-circuit mark to the control board;

[0041] When the elevator door is closing, if the touch panel pull-up mark and door closing signal transmitted by the door machine panel are valid, the touch panel signal is always invalid and the system fault mark is established. When the cumulative number of safety touch panel failures on different floors is greater than M times, the system detects the safety touch panel failure and outputs a fault code.

[0042] In this embodiment, by accurately controlling the lifting timing and signal shielding of the safety touch panel during the elevator door closing process, the method effectively avoids elevator failure or shutdown caused by false operation of the safety touch panel, thereby improving the overall operation safety of the elevator. After the door is fully closed, the touch panel signal is shielded by the output signal of the OUT relay driven by the door machine board, ensuring the stable operation of the elevator in the closed door state and reducing the potential risks caused by the interference of the touch panel signal. The method combines multiple parameters such as door width data, touch panel lifting mark, and door closed signal for comprehensive judgment, and can more accurately identify safety touch panel failures. By accumulating the number of failures on 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 panel failures, which helps to take timely measures to repair them. By recording the number of safety touch panel failures and outputting fault codes, the method provides important data support for elevator maintenance management. 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 both N and M can be customized according to user needs.

[0044] Preferably, the method further comprises:

[0045] When the safety touch panel failure is confirmed, a safety touch panel failure report is generated. If the elevator is not equipped with a light curtain, the elevator will immediately stop service and open the door to wait. If the elevator is equipped with a light curtain, it will switch to a mode that only relies on the light curtain as a means of obstacle detection and continue to operate with the door closed at a preset speed. When the safety touch panel failure exceeds the preset time and is not restored, the elevator will be controlled to stop service and open the door to wait.

[0046] In this embodiment, when the safety touch panel failure is confirmed, a safety touch panel failure report can be generated immediately, which helps maintenance personnel to obtain the failure information in time and handle it. At the same time, it switches to a mode that relies only on the light curtain as an obstacle detection means, and continues to operate at a preset speed to close the door. As a reliable obstacle detection device, the light curtain can detect and respond to any obstacle in time during the door closing process, thereby ensuring the safety of passengers. This technical solution not only provides a detection and reporting mechanism for the safety touch panel failure, but also designs corresponding countermeasures. After confirming the failure, the system can continue to operate according to the preset strategy instead of stopping the service immediately, which reduces the elevator downtime caused by the failure and improves the safety of passengers. Improve the operating efficiency of the elevator; by timely detecting and reporting safety touch panel failures and taking corresponding countermeasures, this technical solution can reduce the extended waiting time or inconvenience of passengers caused by failures, thereby improving the passenger riding experience and satisfaction; when the safety touch panel failure exceeds the preset time and is not restored, the elevator can be controlled to stop service and open the door for standby. This design avoids potential safety risks caused by long-term failures and enhances the reliability and stability of the system; the generated safety touch panel failure report provides maintenance personnel with important fault information, which helps them quickly locate the problem and take targeted maintenance measures, which improves the efficiency and accuracy of maintenance and reduces maintenance costs.

[0047] Preferably, the safety touch panel is arranged in the elevator car. When the elevator door is open or not completely closed, the safety touch panel is exposed from the door threshold. 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 machine panel and the control panel, and the control panel controls the door to open in the opposite direction.

[0048] In this embodiment, the safety touch panel is arranged in the elevator car. When the elevator door is open or not completely closed, the door threshold can be exposed to form an effective obstacle detection area. When a person or an object touches the touch panel, the touch panel will be lifted up and trigger the touch panel switch action. This mechanism can quickly respond to any accidental touch to ensure the safety of passengers and objects. After the touch panel switch is actuated, a signal is transmitted to the door machine panel and the control panel, and the control panel immediately controls the elevator door to open in the opposite direction, thereby avoiding the occurrence of people or objects being trapped and greatly reducing the risk of accidents. As a physical obstacle detection device, the working principle of the safety touch panel is simple. The safety touch panel is simple and reliable, and is not affected by other systems of the elevator. Through close cooperation with the door machine panel and the control panel, the safety touch panel can provide continuous safety protection during the operation of the elevator to ensure the stable operation of the elevator. The existence of the safety touch panel makes passengers feel more at ease and assured when riding the elevator. In the event of an accidental touch, the elevator door can be quickly opened, avoiding panic and discomfort of the passengers and improving the passengers' riding experience. As an independent device, the safety touch panel is relatively simple to repair and maintain. In the event of a fault, maintenance personnel can quickly locate and repair the problem to ensure that the elevator resumes normal operation in a timely manner.

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

[0050] The safety touch panel is installed in the elevator car and is used to expose the door threshold when the elevator door is open or not completely closed, and it will operate when touched;

[0051] A touch panel switch, connected to the safety touch panel, is used to detect the movement of the safety touch panel and transmit a signal;

[0052] The control module includes a door machine panel and a control panel, which is used to receive the signal transmitted by the touch panel switch and control the opening and closing of the elevator door according to the signal;

[0053] The car door lifting device is arranged in the car door and is used to lift the safety touch plate when the elevator door is closed normally and is at a first preset distance from the closing position;

[0054] The fault detection module is used to determine whether the safety touch panel has a fault based on the received signal and preset logic, and output a fault code when the cumulative number of faults reaches a preset number.

[0055] Preferably, the device further comprises:

[0056] The light curtain and the safety touch panel together constitute the door closing protection system of the elevator. When the elevator detects a safety touch panel failure, the elevator continues to operate at a preset speed with the door closed according to the mode of the light curtain as an obstacle detection means. When the safety touch panel failure exceeds the preset time and is not restored, the elevator is controlled to stop service and open the door for standby.

[0057] Preferably, the device further comprises:

[0058] The signal shielding module is used to temporarily shield the touch panel signal when receiving the touch panel lifting mark and the door closing position signal.

[0059] A computing device comprises 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 panel fault detection method when executing the computer program.

[0060] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the safety touch panel fault detection method are implemented.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety touch panel fault detection method, characterized in that: include: When the elevator opens the door after power-on, the door machine board learns the door opening width and confirms the current elevator door width data; When the elevator door is closed normally and is at the first preset distance from the door closing position, the car door lifting device will lift the safety touch plate to prevent the touch plate from colliding with the opposite car door. When the safety touch plate is lifted, the touch plate switch will be actuated and the touch plate signal will be transmitted to the control panel and the door machine panel. The door machine board sends a touch panel pull mark to the control board according to the current door width data when the elevator door is closed normally and is at a second preset distance from the door closing position, wherein the second preset distance is greater than the first preset distance; After receiving the touch panel pull mark transmitted by the door machine board and filtering it for N seconds, the control panel will temporarily block the touch panel signal; After the elevator door is fully closed, the door machine board drives the OUT relay output signal to shield the touch panel signal and transmit the short-circuit mark to the control board; When the elevator door is closing, if the touch panel pull-up mark and door closing signal transmitted by the door machine panel are valid, the touch panel signal is always invalid and the system fault mark is established. When the cumulative number of safety touch panel failures on different floors is greater than M times, the system detects the safety touch panel failure and outputs a fault code.

2. A safety touch panel fault detection method according to claim 1, characterized in that: The method further comprises: When the safety touch panel failure is confirmed, a safety touch panel failure report is generated. If the elevator is not equipped with a light curtain, the elevator will immediately stop service and open the door to wait. If the elevator is equipped with a light curtain, it will switch to a mode that only relies on the light curtain as a means of obstacle detection and continue to operate with the door closed at a preset speed. When the safety touch panel failure exceeds the preset time and is not restored, the elevator will be controlled to stop service and open the door to wait.

3. A safety touch panel fault detection method according to claim 2, characterized in that: The safety touch panel is arranged in the elevator car. When the elevator door is open or not completely closed, the safety touch panel is exposed from the door threshold. When a person or an object touches the touch panel, the touch panel will be lifted up, the touch panel switch will be activated and transmitted to the door machine panel and the control panel, and the control panel controls the door to open in reverse.

4. A safety touch panel fault detection device, characterized in that: include: The safety touch panel is installed in the elevator car and is used to expose the door threshold when the elevator door is open or not completely closed, and it will operate when touched; A touch panel switch, connected to the safety touch panel, is used to detect the movement of the safety touch panel and transmit a signal; The control module includes a door machine panel and a control panel, which is used to receive the signal transmitted by the touch panel switch and control the opening and closing of the elevator door according to the signal; The car door lifting device is arranged in the car door and is used to lift the safety touch plate when the elevator door is closed normally and is at a first preset distance from the closing position; The fault detection module is used to determine whether the safety touch panel has a fault based on the received signal and preset logic, and output a fault code when the cumulative number of faults reaches a preset number.

5. A safety touch panel fault detection device according to claim 4, characterized in that: The device also includes: The light curtain and the safety touch panel together constitute the door closing protection system of the elevator. When the elevator detects a safety touch panel failure, the elevator continues to operate at a preset speed with the door closed according to the mode of the light curtain as an obstacle detection means. When the safety touch panel failure exceeds the preset time and is not restored, the elevator is controlled to stop service and open the door for standby.

6. A safety touch panel fault detection device according to claim 5, characterized in that: The device also includes: The signal shielding module is used to temporarily shield the touch panel signal when receiving the touch panel lifting mark and the door closing position signal.

7. A computing device, characterized in that The method comprises 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 panel fault detection method according to any one of claims 1 to 3 when executing the computer program.

8. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by the processor, the steps of the safety touch panel failure detection method according to any one of claims 1 to 3 are implemented.

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