A fault diagnosis method for a safety monitoring device of a construction hoist

Abstract

The present invention provides a fault diagnosis method for a construction elevator safety monitoring device, comprising the following steps: S1, judging whether it can communicate with a height sensor; S2, judging whether face verification is passed; S3, judging whether a control line is short-circuited according to a height change value; S4, judging whether a control line is short-circuited according to the number of cage door openings and closings; S5, obtaining a height change value of the construction elevator and judging whether it exceeds a limit; S6, obtaining the number of working cycles of the construction elevator and judging whether it exceeds a limit; S7, judging whether a gear meshing fault occurs based on S4 and the height change value; S8, judging whether a gear meshing fault occurs based on S5 and the number of cage door openings and closings; S9, judging whether a cage door line is not connected based on S6 and whether there is no opening and closing signal of the cage door. The method can quickly diagnose the fault position of the construction elevator safety monitoring device by comparing the state data collected by each sensor and module with a preset value and using each state data for combined judgment.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment fault diagnosis, and in particular to a fault diagnosis method for a safety monitoring device of a construction elevator. Background Art

[0002] Construction elevators are commonly used material transportation tools on construction sites. While using construction elevators to improve the efficiency of construction, the monitoring and control of their operating status cannot be ignored. In order to improve the safety of construction elevators, construction elevators are often equipped with construction elevator safety monitoring devices to monitor the working status of the construction elevators in real time. For example, the face verification function included therein is used to authenticate and authorize users.

[0003] When a construction elevator safety monitoring device fails, maintenance personnel generally check the relevant modules and lines one by one. The diagnosis speed of the fault point is relatively slow, and it is difficult to quickly diagnose the fault location in the first time, which in turn affects the entire construction progress. Therefore, a construction elevator safety monitoring device fault diagnosis method is desired to speed up the fault diagnosis speed of the construction elevator safety monitoring device. Summary of the invention

[0004] In order to overcome the disadvantage that when a construction elevator safety monitoring device fails, maintenance personnel have a relatively slow diagnosis speed for the fault point and it is difficult to quickly diagnose the fault location in the first time, the present invention provides a construction elevator safety monitoring device fault diagnosis method that can quickly find the fault location.

[0005] A method for diagnosing faults of a construction hoist safety monitoring device is based on a construction hoist safety monitoring device including a height sensor, a switch circuit, a monitoring center, a cage door signal sensor, a face recognition module and a working cycle monitoring module, and comprises the following steps:

[0006] S1, determine whether it is possible to communicate with the height sensor, if so, enter S2, otherwise, determine that the current height sensor is not connected or the sensor is damaged;

[0007] S2, determine whether the face verification is passed, if yes, go to S5 and S6 respectively, otherwise go to S3 and S4 respectively;

[0008] S3, continuously obtain the height value of the current height sensor, determine whether the height change value is greater than or equal to the change threshold H, if so, determine that the control line of the construction elevator is short-circuited, and set the state value of the control line short-circuited to 1, otherwise, continue to monitor the height value of the height sensor;

[0009] S4, obtaining whether the number of cage door opening and closing times exceeds the preset threshold value M, if so, entering S7, and setting the state value of the control line being short-circuited to 1, otherwise, continuously monitoring the number of cage door opening and closing times;

[0010] S5, continuously obtain the height value of the current height sensor, and determine whether the height change value is less than the change threshold H. If so, proceed to S8, otherwise, continue to monitor the height value of the height sensor;

[0011] S6, obtaining the number of working cycles of the current construction elevator, and determining whether the number of working cycles exceeds a preset value N, if so, proceeding to S9, otherwise, continuously monitoring the number of working cycles of the elevator;

[0012] S7, continuously obtain the height value of the current height sensor, determine whether the height change value is less than the change threshold H, if so, determine that the gear meshing of the height sensor is faulty, and set the state value of the gear meshing fault to 1, otherwise, continue to monitor the height value of the height sensor;

[0013] S8, obtaining whether the number of cage door opening and closing times exceeds a preset threshold value M, if so, determining that the gear meshing of the height sensor is faulty, and setting the state value of the gear meshing fault to 1, otherwise, continuously monitoring the number of cage door opening and closing times;

[0014] S9, determine whether the cage door has no opening and closing signal. If so, determine that the cage door line is not connected properly, and set the state value of the cage door line not connected to 1.

[0015] Preferably, the height sensor is installed on the construction elevator and is used to obtain the height of the construction elevator. The switch circuit is a circuit that controls the on-off of the construction elevator circuit. The monitoring center is used to monitor the status information of the construction elevator and each component of the safety monitoring device and execute the diagnostic procedure. The cage door signal sensor is used to obtain the status signal of the cage door opening and closing. The face recognition module is installed on the control console at the construction site and is used to obtain and compare face information to confirm and authorize the user of the construction elevator. The working cycle monitoring module is used to count the number of times the construction elevator moves from movement to stop as a working cycle after the face verification is passed.

[0016] Preferably, the cage door opening and closing signal includes an outer cage door opening and closing signal and an inner cage door opening and closing signal.

[0017] Preferably, the switch circuit of the construction elevator is connected after the face verification is passed, and the working cycle monitoring module starts to record the number of working cycles. The preset value N of the number of working cycles is pre-configured through the registration response frame, and the preset threshold M of the cage door opening and closing times and the height change threshold H are pre-set.

[0018] Preferably, the working cycle monitoring module, face recognition module, height sensor and cage door signal sensor are respectively connected to the monitoring center via a wireless network and transmit parameter information, and when performing fault diagnosis, the failure of the wireless network connection has been eliminated.

[0019] Preferably, the height value of the construction elevator, the opening and closing signal of the cage door and the number of working cycles are monitored in real time by the height sensor, the cage door signal sensor and the working cycle monitoring module respectively, and the state change of the fault point is updated in real time according to the state data obtained by the sensor and the module.

[0020] The beneficial effects of the present invention are:

[0021] This method can quickly diagnose the fault location of the construction elevator safety monitoring device by comparing the status data collected by each sensor and module with the preset value and using the status data for combined judgment. At the same time, it can update the status changes of each sensor and module of the construction elevator safety monitoring device in real time to reduce the workload of manual troubleshooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the fault diagnosis process of the construction elevator safety monitoring device of the present invention.

[0023] Figure 2 It is a schematic diagram of the detection process of troubleshooting of the construction elevator safety monitoring device of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0025] refer to Figure 1As shown, a fault diagnosis method for a construction elevator safety monitoring device is based on a construction elevator safety monitoring device including a height sensor, a switch circuit, a monitoring center, a cage door signal sensor, a face recognition module and a work cycle monitoring module, wherein the height sensor is installed on the construction elevator and is used to obtain the height of the construction elevator; the switch circuit is a circuit for controlling the on and off of the construction elevator circuit, including inner and outer cage door control lines and the elevator control line. Specifically, if the control line is connected, the corresponding device and equipment can work normally, and if the control line is disconnected, the equipment cannot work normally. For example, if the inner cage door line is not connected, the cage door signal sensor cannot obtain the opening and closing status of the inner cage door; the monitoring center is used to monitor the status information of each component of the construction elevator and the safety monitoring device and execute a diagnostic program, including counting the number of times the cage door is opened and closed, the cage door signal sensor is used to obtain the status signal of the cage door opening and closing, and the face recognition module is used to obtain the status signal of the cage door opening and closing. The module is installed on the control console at the construction site and is used to obtain and compare facial information to confirm and authorize the user of the construction elevator. The working cycle monitoring module is used to count the number of working cycles from movement to stop of the construction elevator after the facial verification is passed. For example, the construction elevator starts and rises from the first floor to the second floor, which can be recorded as a working cycle. At this time, if the elevator on the second floor is started again, moves to other floors and then stops, it is recorded as another working cycle, and so on. The working cycle monitoring module, the face recognition module, the height sensor and the cage door signal sensor are respectively connected to the monitoring center through the wireless network and transmit parameter information, and when performing fault diagnosis, the failure of the wireless network connection has been eliminated. Among them, the wireless network can be selected as a 5G network, and the parameter information includes the number of working cycles, the record information of facial verification, the height of the construction elevator, and the opening and closing signals and times of the cage door.

[0026] In particular, the switch circuit of the construction elevator is connected after the face verification is passed, and the working cycle monitoring module starts to record the number of working cycles. The preset value N of the number of working cycles is pre-configured through the registration response frame, and the preset threshold M of the cage door opening and closing times and the height change threshold H are pre-set. In this embodiment, N is 20 times, M is 40 times, and H is 1m.

[0027] The diagnostic method comprises the following steps:

[0028] S1, determine whether it can communicate with the height sensor, if so, enter S2, otherwise, it means that the current height sensor is not connected or the sensor is damaged;

[0029] S2. Determine whether the face verification is passed. If so, enter S5 and S6 respectively, otherwise, enter S3 and S4 respectively. According to whether the face verification is passed, the fault can be divided into two categories for diagnosis, one is the detection of the gear meshing fault of the height sensor and the abnormality of the inner and outer cage door lines in steps S5 and S6, and the other is the detection of the gear meshing fault and the control line short circuit abnormality in steps S3 and S4.

[0030] S3. Continuously obtain the height value of the current height sensor, and determine whether the height change value is greater than or equal to 1m. If so, determine that the control line of the construction elevator is short-circuited, and set the status value of the short-circuited control line to 1. Otherwise, continue to monitor the height value of the height sensor; optionally, the status value 1 and 0 are used to represent the two states of fault and no fault, respectively, and can be displayed through the indicator light panel installed in the monitoring center. For example, a green light can be used to represent a value of 0, and a red light can be used to represent a value of 1. Since the switch circuit of the construction elevator is connected after the face verification is passed, if the face verification is not passed and the construction elevator is rising and falling, it can be determined that the control line of the construction elevator is short-circuited.

[0031] S4. Obtain whether the cage door is opened and closed more than 40 times. If so, enter S7 and set the state value of the short-circuited control line to 1. Otherwise, continue to monitor the cage door opening and closing times. Without face verification, the cage door of the construction elevator is opened and closed 40 times, indicating that the control line of the construction elevator is short-circuited while the material lifting operation is continued. S7 can also be used to further determine whether the gear of the height sensor is faulty.

[0032] S5. Continuously obtain the height value of the current height sensor and determine whether the height change value is less than 1m. If so, enter S8, otherwise, continue to monitor the height value of the height sensor; due to face verification, the height value and height change value of the construction elevator can be obtained through the height sensor. If the height change value is less than 1m, it is necessary to further determine whether the cage door opening and closing times reaches a certain number through step S8, and determine whether there is a fault in the gear meshing of the height sensor according to the situation.

[0033] S6. Get the number of working cycles of the current construction elevator and determine whether the number of working cycles exceeds 20 times. If so, enter S9, otherwise, continue to monitor the number of working cycles of the elevator. After face verification, when the working cycle of the construction elevator reaches 20 times, it means that the working cycle of starting and stopping the elevator has lasted for 20 times, which means that the construction elevator is lifting normally at this time. Based on this condition, S9 can be used to determine whether there is any abnormality in the circuit of the inner and outer cage doors.

[0034] S7. Continuously obtain the height value of the current height sensor and determine whether the height change value is less than 1m. If so, it is determined that the gear meshing of the height sensor is faulty and the status value of the gear meshing fault is set to 1. Otherwise, the height value of the height sensor is continuously monitored. Since there is no face verification, the cage door of the construction elevator is continuously opened and closed, indicating that the construction elevator is working. At this time, it can be determined whether the gear of the height sensor is faulty based on the height change of the construction elevator.

[0035] S8. Obtain whether the number of cage door opening and closing times exceeds 40 times. If so, it is determined that the gear meshing of the height sensor is faulty, and the state value of the gear meshing fault is set to 1. Otherwise, the number of cage door opening and closing times is continuously monitored. Since the height of the construction elevator is less than 1m, and the number of cage door opening and closing times monitored reaches 40 times, it means that the construction elevator is working. At this time, it can be determined that the gear of the height sensor is faulty.

[0036] S9, determine whether there is no opening and closing signal of the cage door. If so, it is determined that the cage door line is not connected properly, and the state value of the cage door line not connected is set to 1, wherein the opening and closing signal of the cage door includes the outer cage door opening and closing signal and the inner cage door opening and closing signal; if the inner cage door opening and closing signal is not detected, it means that the inner cage door line is not connected properly, and its state value is 1; if the outer cage door opening and closing signal is not detected, it means that the outer cage door line is not connected properly, and its state value is 1.

[0037] It should be noted that the control line being short-circuited includes situations of artificial short-circuit and abnormal short-circuit, and the cage door line being unconnected includes situations of artificial disconnection of the cage door control line, poor contact or abnormal disconnection.

[0038] In a preferred embodiment, if Figure 2 As shown in the figure, it is the detection process of troubleshooting of the safety monitoring device of the construction elevator. The height value of the construction elevator, the opening and closing signal of the cage door and the number of working cycles are monitored in real time by the height sensor, the cage door signal sensor and the working cycle monitoring module respectively. The state change of the fault point is updated in real time according to the state data obtained by the sensor and the module; for example, when it is diagnosed that the inner cage door line is not connected, refer to Figure 1 , the diagnostic program sets the status value of the inner cage door line not connected to 1, and reports the fault information to the monitoring center for reminder, so that the maintenance personnel can find the fault and cause in time. When the fault is solved, refer to Figure 2 At this time, the cage door signal sensor can detect the opening and closing signal of the inner cage door, and the status value of the inner cage door line not connected is set from 1 to 0, thereby eliminating the fault reminder in the monitoring center.

[0039] The method can quickly diagnose the fault point of the construction elevator safety monitoring device, and can also monitor the working status of each sensor and module of the construction elevator safety monitoring device in real time.

[0040] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A fault diagnosis method for a construction hoist safety monitoring device, characterized in that: The construction hoist safety monitoring device based on the height sensor, switch circuit, monitoring center, cage door signal sensor, face recognition module and working cycle monitoring module includes the following steps: S1, determine whether it is possible to communicate with the height sensor, if so, enter S2, otherwise, determine that the current height sensor is not connected or the sensor is damaged; S2, determine whether the face verification is passed, if yes, go to S5 and S6 respectively, otherwise go to S3 and S4 respectively; S3, continuously obtain the height value of the current height sensor, determine whether the height change value is greater than or equal to the change threshold H, if so, determine that the control line of the construction elevator is short-circuited, and set the state value of the control line short-circuited to 1, otherwise, continue to monitor the height value of the height sensor; S4, obtaining whether the number of cage door opening and closing times exceeds the preset threshold value M, if so, entering S7, and setting the state value of the control line being short-circuited to 1, otherwise, continuously monitoring the number of cage door opening and closing times; S5, continuously obtain the height value of the current height sensor, and determine whether the height change value is less than the change threshold H. If so, proceed to S8, otherwise, continue to monitor the height value of the height sensor; S6, obtaining the number of working cycles of the current construction elevator, and determining whether the number of working cycles exceeds a preset value N, if so, proceeding to S9, otherwise, continuously monitoring the number of working cycles of the elevator; S7, continuously obtain the height value of the current height sensor, determine whether the height change value is less than the change threshold H, if so, determine that the gear meshing of the height sensor is faulty, and set the state value of the gear meshing fault to 1, otherwise, continue to monitor the height value of the height sensor; S8, obtaining whether the number of cage door opening and closing times exceeds a preset threshold value M, if so, determining that the gear meshing of the height sensor is faulty, and setting the state value of the gear meshing fault to 1, otherwise, continuously monitoring the number of cage door opening and closing times; S9, determine whether the cage door has no opening and closing signal, if so, determine that the cage door line is not connected properly, and set the state value of the cage door line not connected to 1; In the above steps, the switch circuit of the construction elevator is connected after the face verification is passed, and the working cycle monitoring module starts to record the number of working cycles. The preset value N of the number of working cycles is pre-configured through the registration response frame, and the preset threshold M of the cage door opening and closing times and the height change threshold H are pre-set.

2. A fault diagnosis method for a construction hoist safety monitoring device according to claim 1, characterized in that: The height sensor is installed on the construction elevator and is used to obtain the height of the construction elevator. The switch circuit is a circuit that controls the on and off of the construction elevator circuit. The monitoring center is used to monitor the status information of the construction elevator and the components of the safety monitoring device and execute the diagnostic program. The cage door signal sensor is used to obtain the status signal of the cage door opening and closing. The face recognition module is installed on the control console at the construction site and is used to obtain and compare face information to confirm and authorize the user of the construction elevator. The working cycle monitoring module is used to count the number of times the construction elevator moves from movement to stop as a working cycle after the face verification is passed.

3. A fault diagnosis method for a construction hoist safety monitoring device according to claim 1, characterized in that: The cage door opening and closing signals include an outer cage door opening and closing signal and an inner cage door opening and closing signal.

4. A fault diagnosis method for a construction hoist safety monitoring device according to claim 1, characterized in that: The working cycle monitoring module, face recognition module, height sensor and cage door signal sensor are respectively connected to the monitoring center through a wireless network and transmit parameter information, and when performing fault diagnosis, the fault of the wireless network connection has been eliminated.

5. A fault diagnosis method for a construction hoist safety monitoring device according to claim 1, characterized in that: The height value of the construction elevator, the opening and closing signal of the cage door, and the number of working cycles are monitored in real time by the height sensor, cage door signal sensor, and working cycle monitoring module respectively. The status changes of the fault point are updated in real time according to the status data obtained by the sensor and module.

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