JP7284735B2 - ELEVATOR DIAGNOSTIC DEVICE AND ELEVATOR DIAGNOSTIC METHOD - Google Patents

Description

TECHNICAL FIELD The present invention relates to an elevator diagnostic apparatus and an elevator diagnostic method using magnetic sensors.

As a conventional method for diagnosing elevator door operation, an elevator diagnosis system described in Patent Document 1 is known.

For example, in the "Problems to be Solved by the Invention" column of the same document, "In Patent Document 1, it is necessary to use the control signal of the elevator system to measure the landing position, so the relay system does not have a control signal in the first place. When diagnosing an elevator system that cannot acquire a significant control signal, such as a type elevator or an elevator made by another company whose meaning of the control signal is unknown, the problem is that it is not possible to measure the landing position and diagnose the landing error. "Therefore, the present invention detects an abnormality when the landing error increases due to deterioration over time, etc., even in the case of diagnosing an elevator system in which a significant control signal cannot be obtained." The purpose is to provide an elevator diagnostic system that can

As one aspect of the invention for solving this problem, claim 6 of the same document states, "An elevator diagnostic system for diagnosing an elevator system having a car that ascends and descends between a plurality of landings, comprising: An acceleration sensor installed on the car door, a magnetic sensor installed on the car door, a running state detection unit for detecting the running state of the car based on the output signal of the acceleration sensor, and the output of the acceleration sensor A car movement amount measuring unit that measures the movement amount of the car based on the signal, a car position detection unit that detects the current position of the car based on the output signals of the acceleration sensor and the magnetic sensor, and the acceleration A car door open/close detector that detects the open/closed state of the car door based on the output signal of the sensor or the magnetic sensor, the running state detector, the car movement amount measuring unit, the car position detector, and the car door open/close. an abnormality diagnosing unit that measures the landing error of the car based on the output signal of the detecting unit, and diagnoses that the landing is abnormal when the landing error exceeds a predetermined threshold value. and an elevator diagnostic system."

Thus, Patent Document 1 proposes a method of detecting the open/closed state of a car door based on the output signal of a magnetic sensor installed on the car door.

WO2020/031284

As described above, the diagnostic system of Patent Document 1 targets elevator systems that cannot acquire significant control signals, such as relay-type elevators that do not have control signals or elevators made by other companies whose meaning of control signals is unknown. Even in such a case, the open/closed state of the car door is detected after the fact from the output signal of the magnetic sensor installed on the car door, and the abnormality of the landing position is determined.

Here, it is necessary to set the elevator door opening/closing time to an optimal time for passengers to get on and off. Therefore, in general, the door opening/closing time can be set arbitrarily for each elevator, but the optimum door opening/closing time differs for each user. It was difficult to set the optimal door opening/closing time based on the user's usability.

As a method for grasping the usability of the user regarding the door opening/closing time, a method of monitoring the operation of the door opening/closing button is conceivable. For example, a user who feels that the opening and closing time is short tends to open the door longer by pressing the open button when getting in and out of the vehicle. In this way, the usability of the user can be inferred from the operation of the door open/close button. If it is possible to monitor the opening/closing state of the door and the pressing state of the opening/closing button, it is very effective for estimating the optimum door opening/closing time for each elevator.

However, in the diagnostic system of Patent Document 1, monitoring of the operation state of the door open/close button based on the output signal of the magnetic sensor installed after the fact has not been taken into consideration.

Therefore, the present invention provides an elevator diagnosis apparatus capable of detecting the depression of a door opening/closing button based on the output signal of a magnetic sensor installed after the fact, and issuing an inspection instruction or an adjustment instruction based on the number of times the door opening/closing button is depressed, and an elevator diagnosis. It is to provide a method.

In order to solve the above problems, the elevator diagnostic apparatus of the present invention performs diagnosis based on the measured values of a magnetic sensor installed on the landing side of the car, and based on the measured values, determines the car stop floor. an open/close button operation determination unit that determines the operation of the open button and the close button based on the measured value; and a usage situation that records the operation of the open button and the close button for each floor. and a recording unit.

According to the elevator diagnostic device or elevator diagnostic method of the present invention, it is possible to detect the operation of the door open/close button using the magnetic sensor installed after the fact, and by grasping the usage situation, the door open/close time can be determined. Adjustments can be made quickly.

1 is an equipment configuration diagram showing the configuration of an elevator diagnostic apparatus according to an embodiment; FIG. The figure which shows the equipment arrangement situation around the door of one Example. 4 is a time chart showing magnetic sensor measurement values when each floor is stopped in one embodiment. 4 is a flowchart showing the overall processing of one embodiment; 4 is a flowchart showing initial value registration processing in the floor determination unit of one embodiment. 4 is a flowchart showing floor detection processing in a floor determination unit of one embodiment. A time chart showing door operation and magnetic sensor measurement values. 4 is a flowchart showing the overall processing of initial value registration; 4 is a flowchart showing door opening operation initial value registration processing. 4 is a flowchart showing a door closing operation initial value registration process; 4 is a flowchart showing door open time initial value registration processing. 4 is a flowchart showing open/close button detection processing; A time chart showing magnetic sensor measurement values when a door peripheral device in a hoistway is damaged. A time chart showing magnetic sensor measurement values when a door peripheral device on a car is damaged.

Hereinafter, an elevator diagnosis apparatus 1 according to an embodiment of the present invention will be described with reference to the drawings.

First, using FIG. 1, the outline of the diagnostic apparatus 1 of this embodiment and the elevator to be diagnosed will be described.

The elevator illustrated here is installed in a building with seven or more floors, and includes a car 21 that ascends and descends in a hoistway 20 and landing doors 22 for each floor. A magnetic sensor 2 for measuring the magnetic flux density on the landing side is installed on the front side (on the landing side) of the upper surface of the car 21, and the magnetic flux density measured by the magnetic sensor 2 (hereinafter referred to as "magnetic measurement value M"). is transmitted to the diagnostic device 1 by wireless communication. An open button 21a and a close button 21b for opening and closing the door are provided inside the car 21, and a landing button 22a for calling the car 21 to the landing is provided near the landing door 22. there is The operations of the open button 21a, the close button 21b, and the landing button 22a are input to an elevator control device (not shown) via a tail cord (not shown) or the like, and are reflected in the elevator control of the car 21 and the opening/closing control of the doors. , is not input to the diagnostic apparatus 1.

The diagnostic device 1 includes a sensor receiver 1a, a floor determination unit 1b, an open/close button operation determination unit 1c, a usage status recording unit 1d, an equipment failure determination unit 1e, and a notification unit 1f. The sensor receiving unit 1a receives the magnetic measurement value M from the magnetic sensor 2, and transmits it to the floor determination unit 1b, the open/close button operation determination unit 1c, and the equipment failure determination unit 1e. The floor determining unit 1b determines the car stop floor based on the magnetic measurement value M from the sensor receiving unit 1a. The open/close button operation determination unit 1c determines operation of the open button 21a and the close button 21b based on the magnetic measurement value M from the sensor receiving unit 1a. The usage recording unit 1d records the number of times the opening/closing button is operated for each floor based on the information from the floor determination unit 1b and the opening/closing button operation determination unit 1c. Based on the information from the sensor receiver 1a and the floor determination unit 1b, the equipment failure determination unit 1e determines whether there is a failure in the door peripheral equipment. The notification unit 1 f transmits the usage status received from the usage status recording unit 1 d to the control center 3 . Further, when the device failure determination unit 1 e determines that there is a failure, the notification unit 1 f transmits failure information to the control center 3 . The control center 3 confirms the usage status based on the content of the notification received from the notification unit 1f, and issues inspection instructions and adjustment instructions by contacting maintenance personnel on site. Details of each part of the diagnostic device 1 will be described later.

Specifically, the diagnostic device 1 is a computer including hardware such as an arithmetic unit such as a CPU, a main storage device such as a semiconductor memory, an auxiliary storage device, and a communication device. The arithmetic unit executes the program loaded from the auxiliary storage device to the main storage device to realize each of the functions described above. .

<Relationship between the metal arrangement around the landing door and the measured value M of the magnetic sensor>
Next, referring to FIGS. 2 and 3, the arrangement of metal around the hall door 22 on each floor and the change in the measured value M of the magnetic sensor 2 due to the difference in arrangement of the metal will be described.

FIG. 2 is a diagram showing the landing door 22 of FIG. 1 as seen from the hoistway 20. As shown in FIG. (a) is, for example, the landing door 22 on the first floor, and (b) is, for example, the landing door 22 on the second floor. As shown in these diagrams, depending on the presence or absence of the vision glass 22b of the landing door 22, and the presence or absence of the wiring 23 in the hoistway, the laying state of the metal parts differs for each floor. In addition, the arrangement of the steel poles 24 and the like above the door differs depending on the height of the floor and the structure of the building. Therefore, the degree of influence on the magnetic sensor 2 due to the placement of metal around the hall door 22 differs from floor to floor.

FIG. 3 is a time chart exemplifying magnetic measurement values M measured by the magnetic sensor 2 when the car 21 ascends from the 1st floor to the 7th floor while stopping. Since the landing door 22 was opened and closed while the vehicle was stopped on each floor, the magnetic measurement value M fluctuated greatly in conjunction with the opening and closing of the door.

When the car 21 stops at the first floor and the landing door 22 on the first floor is closed, the magnetic measurement value M measured by the magnetic sensor 2 is assumed to be _M1 . Following this, the magnetic measurement value M measured when the car 21 stops at the nth floor and the landing door 22 on the nth floor is closed is defined as _Mn .

As described above, since the metal arrangement around the hall door 22 is different for each floor, the magnetic measurement values M ₁ to M ₇ measured for each floor are different. Therefore, the stop floor of the car 21 can be determined based on the magnitude of the magnetic measurement value M measured when the car 21 is stopped. It should be noted that if there is something that closely resembles the magnetic measurement value M of each floor, by adding an appropriate metal around one of the hall doors 22, the magnetic measurement value M of each floor can be positively made different. It is possible.

<Overall processing of diagnostic device>
FIG. 4 is a flow showing the overall processing of the diagnostic device 1. As shown in FIG. As shown here, the diagnostic device 1 performs general initial processing (S1) in an elevator, and then performs initial value registration processing (S2) for floor detection, opening/closing button operation, which is processing unique to the present invention. An initial value registration process for detection ( S3 ), a floor detection process ( S4 ), and an open/close button operation detection process (S5) are performed. The details of each process will be described below with reference to the drawings.

<S2 Initial value registration process for floor detection>
FIG. 5 is a flow showing initial value registration processing for floor detection. This process is a process of registering the initial value of the magnetic measurement value M of each floor used to determine the floor on which the car 21 is stopped in the floor determination unit 1b. to be installed.

First, in S21, the maintenance staff sets the initial value of the floor registration variable n to 1. Note that n=1 indicates the lowest floor, and if the lowest floor is the second basement floor, the second basement floor corresponds to n=1. However, for the sake of simplicity, it is assumed that the first floor above ground is the lowest floor, as shown in FIGS. 1 and 3 .

Next, in S22, the maintenance worker moves the car 21 to the lowest floor (first floor). Then, in S23, the floor determination unit 1b acquires the magnetic measurement value _M1 of the lowest floor (first floor). After that, in S24, the floor determination unit 1b registers the magnetic measurement value _M1 acquired in S23 as the initial value of the lowest floor (first floor).

Next, in S25, the maintenance personnel confirms whether or not the stop floor of the car 21 is the highest floor, and if it is not the highest floor (No in S25), in S26, the maintenance personnel moves the car 21 to the first floor. Further, in S27, 1 is added to the floor registration variable n, and the processing from S23 is performed again.

By repeating this, the initial values of the lowest floor to the highest floor are registered in the floor determination unit 1b. Then, when the initial value registration of the top floor is completed (Yes in S25), the process of S2 is terminated.

<S3 Floor detection processing>
FIG. 6 is a flow showing the details of floor detection processing continuously performed by the floor determination unit 1b while the elevator is in operation.

First, in S<b>31 , the floor determination unit 1 b acquires the magnetic measurement value M measured by the magnetic sensor 2 .

Next, in S32, the floor determination unit 1b confirms whether or not the previous value of the magnetic measurement value M has been saved. , the current value of the magnetic measurement value M acquired in S31 is stored as the previous value for the next process, and then the process of S3 is terminated.

On the other hand, if the previous value has been saved (Yes in S32), the floor determination unit 1b checks whether the car 21 is stopped. Specifically, first, in S34, the difference between the previous value of the magnetic measurement value M and the current value is calculated. Next, in S35, it is determined whether the difference is equal to or less than a threshold. If the difference is equal to or less than the threshold (Yes in S35), it is determined that there is a possibility that the car 21 has stopped. Note that the threshold value is determined from the amount of variation at the time of stop, taking into consideration the detection error of the magnetic sensor 2 .

Further, the floor determination unit 1b determines whether a predetermined time has passed while the difference is equal to or less than the threshold value in order to reliably determine that the vehicle is in the stopped state. Specifically, first, in S36, the stop detection timer starts counting up. Next, in S37, it is determined whether the stop detection timer has reached a predetermined time. Here, for example, it is confirmed that the state in which the difference is equal to or less than the threshold has continued for one second. If the difference is greater than the threshold in S35 (No in S35), it is determined that the car 21 is moving between floors, and the stop detection timer is reset in S3c.

On the other hand, if the predetermined time has not elapsed in S37 (No in S37), the process of S3 is terminated after performing S33.

When the stop detection timer exceeds the predetermined time limit (Yes in S37), the floor determination unit 1b determines that the car 21 is stopped, and performs processing for specifying the stop floor. Specifically, first, in S38, 1 is selected as the floor n. Next, in S39, the magnetic measurement value _M1 , which is the initial value of the first floor, is compared with the current value of the magnetic measurement value M acquired in S31. If the difference between the two is equal to or less than the threshold (Yes in S39), the car stopping floor is determined to be the first floor (S3a).

On the other hand, if the difference is greater than the threshold value in S39 (No in S39), it is determined that the car stop floor is not the 1st floor, and 1 is added to the floor n=1 in S3b. The magnetic measurement value _M2 , which is the initial value of the second floor, is compared with the current value of the magnetic measurement value M acquired in S31. By repeating the processes of S39 and S3b in this manner, the car stopping floor can be determined. In S39, if the current value of the magnetic measurement value does not match the initial value of all the floors, it may be determined as abnormal and the control center 3 may be notified.

<Relationship between door open/close state and magnetic measurement value M>
Here, before explaining the operation detection processing of the open button 21a and the close button 21b by the open/close button operation determination unit 1c, the relationship between the open/closed state of the landing door 22 and the magnetic measurement value M will be described using the time chart of FIG. will be described in association with the button operation.

Generally, the hall door 22 is controlled so that it opens when the car 21 arrives at the hall, and then closes after a certain period of time has elapsed. The time period from the start of the opening operation to the completion of the closing operation can be arbitrarily set, and can be changed by maintenance personnel or the like at the request of the user.

FIGS. 7(a1) and (a2) are time charts showing the relationship between the door opening/closing state and the magnetic measurement value M when the open button 21a (or the hall button 22) or the close button 21b is not operated. Immediately after the car 21 stops at the landing, the landing door 22 is closed. At this time, the magnetic measurement value M is also substantially constant within the measurement error range of the initial value _Mn for each floor registered in S2. After that, when the landing door 22 is opened, the magnetic measurement value M decreases as the door is opened, and the magnetic measurement value M becomes substantially constant while the door is open. After that, the hall door 22 closes when the set time period elapses, and the magnetic measurement value M increases as the door closes. When the user does not operate the open button 21a (or the landing button 22) or the closing button 21b, the standard time ts required from the start of the opening operation to the completion of the closing operation of the landing door 22 is always constant.

7(b1) to (b3) are time charts showing the door opening/closing state and the magnetic measurement value M when the user presses the close button 21b to close the landing door 22 while the door is open. When the user presses the close button 21b at the timing indicated by the dotted line (b3), the closing operation of the landing door 22 is started. shorter than the standard time ts. If this state occurs frequently, it can be assumed that the standard time ts is long for the user, so the maintenance personnel may set the standard time ts shorter.

7(c1) to (c3) show the door opening/closing state and magnetic measurement when the user presses the open button 21a (or the hall button 22) while the door is open to extend the open state of the hall door 22. 4 is a time chart showing a value M; When the user presses the open button 21a (or the landing button 22) at the timing shown by the solid line in (c3), the open state of the landing door 22 is extended, so the opening operation of the landing door 22 is started until the closing operation is completed. is longer than the standard time ts. If this state occurs frequently, it can be assumed that the standard time ts is short for the user, so maintenance personnel may set the standard time ts longer.

7(d1) to (d3) show the door opening/closing state and the magnetic measurement value M when the user presses the open button 21a (or the hall button 22) to open the hall door 22 again during the door closing operation. is a time chart showing When the user presses the open button 21a (or the landing button 22) at the timing of the closing operation indicated by the solid line in (d3), the closing operation of the landing door 22 switches to the opening operation, so as shown in (d2). , a pulsed magnetic measurement value M is measured. Therefore, based on this pulse-shaped magnetic measurement value M, reversal of the door can be detected. Even when the door is frequently reversed, the user can assume that the standard time ts is short, so the maintenance staff may set the standard time ts longer. It should be noted that even when the door switches to the opening operation as a result of the user touching the door during the closing operation, the opening button 21a (or the landing button 22) may be treated as having been pressed.

In this way, it is possible to determine whether or not the open button 21a (or the hall button 22) and the close button 21b are operated, and the operation timing, from the length of the opening and closing time of the hall door 22 and the behavior of the magnetic detection value M. Using this, the open/close button operation determination unit 1c determines button operation by the following method.

<S4 Initial value registration process for detecting open/close button operation>
FIG. 8 is a flow showing initial value registration processing for detecting open/close button operation. In this process, each initial value of the door opening operation, the door closing operation, and the door opening time used when detecting the operation of the open button 21a (or the hall button 22) or the close button 21b is sent to the open/close button operation determination unit 1c. This is a registration process, which is performed when maintenance personnel install the diagnostic device 1 and the magnetic sensor 2 .

First, in S4a, the maintenance staff stops the car 21 at any landing. Thereafter, the door opening operation initial value registration processing of S4b, the door closing operation initial value registration processing of S4c, and the door opening time initial value registration processing of S4d are sequentially performed. S4b to S4d will be described in detail below with reference to FIGS. 9 to 11. FIG.

<S4b Door opening operation initial value registration process>
FIG. 9 is a flow showing the details of the door opening operation initial value registration process. First, in S4b1, the open/close button operation determination unit 1c acquires the magnetic measurement value Mi when the door is closed. Next, in S4b2, the maintenance person opens the door. After that, in S4b3, the open/close button operation determination unit 1c acquires the magnetic measurement value Mi' when the door is open.

Next, the open/close button operation determination unit 1c compares the magnetic measurement values Mi and Mi' in S4b4, and if there is a change equal to or greater than the threshold value (Yes in S4b4), stores the magnetic change direction in S4b5. . Specifically, as shown in Equation 1, when the amount of change exceeds the threshold, it is determined that the magnetism changes due to the door opening operation, and in Equation 2, the positive or negative direction of change is stored.

Finally, at S4b6, the open/close button operation determination unit 1c records the magnetism change direction stored at S4b5 as the door opening operation initial value.

<S4c door closing operation initial value registration processing>
FIG. 10 is a flow showing the details of the door closing operation initial value registration process. First, in S4c1, the open/close button operation determination unit 1c acquires the magnetic measurement value Mj when the door is open. Next, in S4c2, the maintenance person closes the door. After that, in S4c3, the open/close button operation determination unit 1c acquires the magnetic measurement value Mj' when the door is closed.

Next, the open/close button operation determination unit 1c compares the magnetic measurement values Mj and Mj' in S4c4, and if there is a change equal to or greater than the threshold value (Yes in S4c4), stores the magnetic change direction in S4c5. . Specifically, as shown in Equation 3, when the amount of change exceeds the threshold, it is determined that the magnetism changes due to the door closing operation, and in Equation 4, the positive or negative direction of change is stored.

Finally, in S4c6, the open/close button operation determination unit 1c records the magnetism change direction stored in S4c5 as the door closing operation initial value.

<S4d door open time initial value registration process>
FIG. 11 is a flow showing the details of the door open time initial value registration process. First, in S4d1, a maintenance worker performs a door opening operation. Next, in S4d2, the open/close button operation determination unit 1c acquires the magnetic measurement value Mt. When there is a magnetic change registered as the door opening operation initial value with the door opening operation (Yes in S4d3), the open/close button operation determination unit 1c starts counting up the door opening time timer in S4d4. On the other hand, if there is no magnetic change registered as the door opening operation initial value (No in S4d3), the open/close button operation determination section 1c repeats S4d2.

After starting the count-up, the opening/closing button operation determination unit 1c acquires the magnetic measurement value Mt' in S4d5, and waits until the hall door 22 automatically closes in S4d6. That is, it waits until there is a magnetism change during the door closing operation registered as the door closing operation initial value, and if there is no magnetism change (No in S4d7), it continues counting up in S4d4.

Then, if a magnetic change during the door closing operation is detected (Yes in S4d6), the open/close button operation determination unit 1c records the current count time as the initial value td of the door open time in S4d7. The initial value td of the door open time registered here corresponds to the standard time ts in FIG. 7(a1).

<S5 Open/close button operation detection process>
FIG. 12 is a flow showing the details of open/close button operation detection processing continuously performed by the floor determination unit 1b, the open/close button operation determination unit 1c, and the usage status recording unit 1d while the elevator is in operation.

First, in S51, the floor determination unit 1b determines whether the floor on which the car 21 is currently stopped has been determined. If the current floor has been determined (Yes in S51), the process proceeds to S52. If the floor has not been determined (No in S51), there is a possibility that the car 21 is running, so the process of S5 is terminated without performing open/close button operation detection.

Next, in S52, the opening/closing button operation determination section 1c determines whether or not there is a magnetic change during the door opening operation. If there is a magnetism change during the door opening operation (Yes in S52), in S53, the door opening time timer starts counting up. After that, in S54, it is determined whether or not there is a change in magnetism when the door is closed. If there is a magnetism change during the door closing operation (Yes at S53), at S55, the door opening time timer stops counting. Note that the measured value td' of the timer at this time is the actual door open/close time during customer use.

Next, in S56, the open/close button operation determination unit 1c compares the initial value td registered in S4d with the measured value td' acquired in S55. If the measured value td' is smaller than the initial value td (Yes in S56), it can be determined that the user has operated the close button 21b because the door closed earlier than the door closed automatically (see FIG. 7B). Therefore, the open/close button operation determination unit 1c determines in S57 that the close button 21b has been operated.

On the other hand, if the measured value td' is equal to or greater than the initial value td (No in S56) and if the measured value td' is greater than the initial value td (Yes in S5b), the door was open longer than it automatically closed. , it can be determined that the user has operated the open button 21a (see FIGS. 7C and 7D). Therefore, the opening/closing button operation determination unit 1c determines in S5c that the door opening button has been operated.

Further, when the measured value td' is equal to or greater than the initial value td (No in S56) and the measured time td' is equal to the initial value td (No in S5b), it can be determined that the opening/closing is automatic (see FIG. 7A). ). Therefore, the open/close button operation determination unit 1c determines in S5f that the open/close button is not operated.

During operation of the elevator, for example, when a person enters the elevator while the door is being closed, a user in the car may operate the open button 21a to open the door (see FIG. 7(d)). At this time, the door is opened during the closing operation. That is, it becomes a reversal operation.

After the closing operation is detected in S54, when the magnetism change during the door opening operation is detected again in S58 (Yes in S58), it can be determined that the open button 21a was operated during the door closing operation and the door was reversed. Therefore, the opening/closing button operation determination unit 1c determines that there is an open button operation at S59, and determines that there is a reversing operation of the door at S5g.

In addition, in order to distinguish the case where the door is opened after being completely closed, for example, the case where the user enters from the waiting floor after the car is in the waiting state after running, the closing operation detection in S54 is followed by the closing operation in S58. The time until the opening operation is detected may be counted, and if the time is less than the predetermined time, the opening and closing operation may be reversed, and if the predetermined time is longer than the predetermined time, the opening and closing operation may be performed without reversing.

Alternatively, after S58, the processing from S53 onward may be performed again to determine whether or not the opening/closing button is operated after reversal and whether or not reversal is to be performed again.

Then, in S5a, the usage recording unit 1d records the opening/closing button operation and the number of reversals determined by the opening/closing button operation determination unit 1c for each floor determined in S51.

In addition, when the closing operation after opening the door is not detected in S54 (No in S54), that is, when the door continues to open, the door opening time is assumed to be a predetermined time in S5d, for example, in S5b. If the time (for example, 10 minutes) that greatly exceeds the current door opening time is exceeded (Yes in S5d), it is determined that the door is abnormal in S5e. On the other hand, if it is within the predetermined time (No in S5d), the process returns to S53 to continue counting the door open time timer.

If the door opening operation is not detected in S52 (No in S52), the door opening time timer is cleared in S5h until the door opening operation is performed.

By transmitting the counted number of times the opening/closing button is operated and the number of reversals of the door through the above-described opening/closing button operation detection processing, the maintenance personnel can grasp the usage status by transmitting the number of times the opening/closing button is operated and the number of reversals from the notification unit 1f to the control center 3.

If the number of times the close button 21b is operated is high, it is highly possible that the user feels that the door opening/closing time is long. If the number of operations is large, it is highly likely that the user feels that the door opening/closing time is short, so it is possible to propose to set the door opening/closing time longer.

In addition, if there are many reversals, it is possible to improve before failure by inspecting the door. Further, by using the floor information, it is possible to quickly deal with the abnormality of the hall door 22 on the specific floor when the floor is reversed only on the specific floor.

Further, when it is determined that the door is abnormal in S5e, the notification unit 1f notifies the control center 3 of the abnormality, so that maintenance personnel can be contacted and immediate response can be taken at the site.

<Damage detection method by the device failure determination unit 1e>
Next, a method for detecting damage to door peripheral equipment and a method for detecting damage to on-car equipment by the equipment failure determination unit 1e will be described.

As explained with reference to FIG. 3, the magnetic measurement value _Mn at each floor stop is different, but generally cables and brackets are fixed in the hoistway and the position of the metal does not change. However, it is conceivable that it may be damaged or displaced due to aged deterioration or contact during running. If left as it is, the elevator may come to an emergency stop due to contact during travel. Therefore, it is necessary to grasp the condition of equipment in the hoistway even if it does not affect running.

FIG. 13 is a time chart showing the measured values of the magnetic sensor 2 when stopping at each floor when the door peripheral equipment on the second floor is damaged. The dotted line in the second floor portion is the initial magnetic measurement value M, and the solid line is the magnetic measurement value M after the door peripheral device is damaged. For example, if the bracket on the upper part of the door on the second floor is missing, the magnetic measurement value M will also change due to the change in the placement of the metal. In the floor detection process of S3, if there is an initial value corresponding to the magnetic measurement value M when stopping on floors other than the 2nd floor, and there is no initial value corresponding to the magnetic measurement value M only when stopping on the 2nd floor, the equipment failure determination unit 1e determines that there is a possibility that the door peripheral equipment on the second floor has been damaged, and notifies the control center 3 via the notification unit 1f, so that maintenance personnel can take action before failure occurs. In order to specify that the car 21 stops on the second floor, it is necessary to refer to what floor the previous floor was or use information from an acceleration sensor, an air pressure sensor, etc. (not shown). can be done.

FIG. 14 is a time chart showing the measured values of the magnetic sensor 2 when stopping at each floor when equipment on the car is damaged. The dotted line is the magnetic measurement value M at the time of initial setting, and the solid line is the magnetic measurement value M after the equipment on the car is damaged. For example, when the cover of the door control box on the car comes off, the magnetic measurement value M also changes due to the change in the arrangement of the metal around the magnetic sensor 2 . In the floor detection process of S3, if there is a similar deviation from the initial value on all floors, the equipment on the car may be damaged, and the notification unit 1f notifies the control center 3. , maintenance personnel can take action before failure occurs.

As described above, according to the diagnostic device or the diagnostic method of the present embodiment, based on the output signal of the magnetic sensor installed after the fact, the operation status of the door open/close button by the user and the operation status of the hall door. It is possible to detect abnormalities in peripheral equipment and equipment on the car.

1 diagnostic device 1a sensor receiver 1b floor determination unit 1c open/close button operation determination unit 1d usage recording unit 1e equipment failure determination unit 1f notification unit 2 magnetic sensor 3 control center 20 hoistway 21 car 21a open button 21b close button 22 boarding hall Door 22a Hall button 22b Vision glass 23 Wiring 24 Steel pole

Claims (7)

An elevator diagnosis device that performs diagnosis based on the measurement values of a magnetic sensor installed on the landing side of the car,
a floor determination unit that determines a car stop floor based on the measured value;
an open/close button operation determination unit that determines operation of the open button and the close button based on the measured value;
a usage recording unit that records the operation of the open button and the close button for each floor;
An elevator diagnostic device comprising: The elevator diagnostic apparatus according to claim 1,
The open/close button operation determination unit detects an opening operation or closing operation of the door based on the change direction of the measured value, and the time required from the start of the opening operation to the completion of the closing operation of the door is determined by a predetermined amount of time. and determining that the close button has been operated when the standard time is shorter than the standard time. The elevator diagnostic apparatus according to claim 1,
The open/close button operation determination unit detects an opening operation or closing operation of the door based on the change direction of the measured value, and the time required from the start of the opening operation to the completion of the closing operation of the door is determined by a predetermined amount of time. is longer than the standard time, it is determined that the opening button has been operated. The elevator diagnostic apparatus according to claim 1,
The opening/closing button operation determination unit detects whether the door is opened or closed based on the direction of change in the measured value. (2) an elevator diagnostic apparatus, which determines that the door is reversed; The elevator diagnostic apparatus according to claim 1,
The floor determination unit stores the initial values of the measured values when the doors are closed for each floor, and compares the current measured values with the initial values of each floor to determine the current car stop floor. An elevator diagnosis device characterized by determining: The elevator diagnostic apparatus according to claim 1,
Further, the elevator diagnostic apparatus further comprises a reporting section for transmitting the usage status recorded in the usage status recording section to an external control center. An elevator diagnosis method for performing diagnosis based on the measurement values of a magnetic sensor installed on the landing side of a car,
determining a stop floor of the car based on the measured value;
a step of determining the operation of the open button and the close button based on the measured value;
a step of transmitting the operation of the open button and the close button for each floor to a control center;
A method for diagnosing an elevator, comprising:

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