JP2021185107A - Elevator diagnostic device and elevator diagnostic method - Google Patents

Abstract

To provide a door operation diagnostic device capable of monitoring a door reversal, an opening/closing button operation, and breakage of door peripheral devices, and quickly adjusting a door opening/closing time by grasping an usage situation.SOLUTION: An elevator diagnostic device performs a diagnosis based on a measured value by a magnetic sensor installed on a landing side of a car. The elevator diagnostic device is characterized by being equipped with: a floor determination unit for determining a car stop floor based on the measured value; an opening/closing button operation determination unit for determining the operation of an opening button and a closing button based on the measured value; and a usage situation recording unit for recording the operation of the opening button and the closing button on each floor.SELECTED DRAWING: Figure 1

Description

The present invention relates to an elevator diagnostic apparatus using a magnetic sensor and an elevator diagnostic method.

The elevator diagnostic system described in Patent Document 1 is known as a conventional method for diagnosing an elevator door operation.

For example, in the "Problems to be Solved by the Invention" column of the same document, "In Patent Document 1, since it is necessary to use the control signal of the elevator system to measure the landing position, the relay in which the control signal does not exist in the first place. When the subject of diagnosis is an elevator system that cannot acquire a significant control signal, such as a formula elevator or an elevator made by another company whose meaning of the control signal is unknown, there is a problem that the landing position cannot be measured and the landing error cannot be diagnosed. "Therefore, the present invention detects an abnormality even when an elevator system that cannot acquire a significant control signal is targeted for diagnosis when the landing error expands due to aged deterioration or the like. The purpose is to provide an elevator diagnostic system that can be used. "

As one aspect of the invention for solving this problem, claim 6 of the same document states that "an elevator diagnostic system for diagnosing an elevator system including a car that moves up and down between a plurality of landings, and is the same as the car. An acceleration sensor installed on the car door, a magnetic sensor installed on the car door, a running state detection unit that detects 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 a signal, a car position detecting 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 detection unit 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 detection unit, the car movement amount measurement unit, the car position detection unit, and the car door open / close unit. It is characterized by being provided with an abnormality diagnosis unit that measures the landing error of the car based on the output signal of the detection unit and diagnoses a landing abnormality when the landing error exceeds a predetermined threshold. Elevator diagnostic system. "

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

International Publication No. 2020/031284

As described above, the diagnostic system of Patent Document 1 targets an elevator system that cannot acquire a significant control signal, such as a relay type elevator in which no control signal exists or an elevator manufactured by another company whose meaning of the control signal is unknown. Even in this case, the open / closed state of the car door is detected from the output signal of the magnetic sensor installed on the car door after the fact, and the abnormality of the landing position is determined.

Here, it is necessary to set the elevator door opening / closing time to the optimum time for the user to get on and off. Therefore, in general, it is possible to set an arbitrary door opening / closing time for each elevator, but since the optimum door opening / closing time differs for each user, maintenance personnel and the like can set each elevator and even the floor. It was difficult to set the optimum door opening / closing time after grasping the usability of each user.

As a method of grasping the usability of the user regarding the door opening / closing time, a method of monitoring the operation of the door opening / closing button can be considered. For example, a user who feels that the opening / closing time is short tends to open the door for a long time by opening the button when getting on and off. In this way, the usability of the user can be inferred from the operation of the open / close button. Therefore, when the diagnosis target is an elevator system that cannot directly acquire the operation signal of the door open / close button, it is based on the output signal of the magnetic sensor installed after the fact. If the open / closed state of the door and the pressed state of the open / close button can be monitored, it is very effective for estimating the optimum door open / close time for each elevator.

However, in the diagnostic system of Patent Document 1, it is not considered to monitor the operation state of the door open / close button based on the output signal of the magnetic sensor installed after the fact.

Therefore, the present invention is an elevator diagnostic device capable of detecting the pressing of a door open / close button based on an output signal of a magnetic sensor installed after the fact, and giving an inspection instruction or an adjustment instruction according to the number of pressings, and an elevator diagnosis. 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 the magnetic sensor installed on the landing side of the car, and based on the measured values, the car stop floor. The floor determination unit that determines the floor, the open / close button operation determination unit that determines the operation of the open button and the close button based on the measured value, and the usage status of recording the operation of the open button and the closed button for each floor. It was equipped with a recording unit.

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

The equipment block diagram which shows the structure of the elevator diagnostic apparatus of one Example. The figure which shows the equipment arrangement state around the door of one Example. A time chart showing magnetic sensor measurement values when each floor of an embodiment is stopped. The flowchart which shows the whole processing of one Example. The flowchart which shows the initial value registration process in the floor determination part of one Example. The flowchart which shows the floor detection processing in the floor determination part of one Example. A time chart showing door movements and magnetic sensor measurements. A flowchart showing the entire process of initial value registration. A flowchart showing the door open operation initial value registration process. A flowchart showing the door closing operation initial value registration process. A flowchart showing the door open time initial value registration process. A flowchart showing the open / close button detection process. A time chart showing the measured values of the magnetic sensor when the door peripherals in the hoistway are damaged. A time chart showing the magnetic sensor measurement values when the door peripherals on the car are damaged.

Hereinafter, the elevator diagnostic device 1 according to the embodiment of the present invention will be described with reference to the drawings.

First, with reference to 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 is provided with a car 21 for ascending / descending in the hoistway 20 and a landing door 22 on each floor. A magnetic sensor 2 for measuring the magnetic flux density on the landing side is installed on the front side (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. Inside the car 21, an open button 21a and a close button 21b for opening and closing the door are provided, and in the vicinity of the landing door 22, a landing button 22a for calling the car 21 to the landing is provided. 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 code (not shown) and are reflected in the elevator control of the car 21 and the opening / closing control of the door. , It is assumed that it is not input to the diagnostic device 1.

The diagnostic device 1 includes a sensor receiving unit 1a, a floor determination unit 1b, an open / close button operation determination unit 1c, a usage status recording unit 1d, a device 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 determination 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 the 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 status recording unit 1d records the number of times the open / close button is operated for each floor based on the information from the floor determination unit 1b and the open / close button operation determination unit 1c. The equipment failure determination unit 1e determines whether or not there is a failure in the equipment around the door based on the information from the sensor receiving unit 1a and the floor determination unit 1b. The notification unit 1f transmits the usage status received from the usage status recording unit 1d to the control center 3. Further, when the device failure determination unit 1e determines that the failure has occurred, the notification unit 1f transmits the failure information to the control center 3. The control center 3 confirms the usage status based on the notification content received from the notification unit 1f, and contacts the maintenance staff at the site to give an inspection instruction and an adjustment instruction. Details of each part of the diagnostic apparatus 1 will be described later.

Specifically, the diagnostic device 1 is a computer equipped with 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. Then, each of the above functions is realized by the arithmetic unit executing the program loaded from the auxiliary storage device to the main storage device, but the following will be described while omitting such well-known techniques in the computer as appropriate. ..

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

FIG. 2 is a diagram showing a state in which the landing door 22 of FIG. 1 is viewed from the hoistway 20. (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, the laying condition of the metal parts differs for each floor depending on the presence / absence of the vision glass 22b of the landing door 22 and the presence / absence of the wiring 23 in the hoistway. In addition, the arrangement of the iron pillars 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 of the metal arrangement around the landing door 22 on the magnetic sensor 2 differs from floor to floor.

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

When the car 21 is stopped on 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 set to M ₁ . Following this, the magnetic measurement value M measured when the car 21 is stopped on 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 landing door 22 is different for each floor, the magnetic measurement values M _{1 to} M ₇ measured on 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. If there is something that closely resembles the magnetic measurement value M on each floor, the magnetic measurement value M on each floor can be positively different by adding an appropriate metal around any of the landing doors 22. It is possible.

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

<Initial value registration process for S2 floor detection>
FIG. 5 is a flow showing an initial value registration process for floor detection. This process is a process of registering the initial value of the magnetic measurement value M of each floor used for determining the floor on which the car 21 is stopped in the floor determination unit 1b, and the maintenance staff performs the diagnostic device 1 and the magnetic sensor 2. It is carried out when installing.

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

Next, in S22, the maintenance staff moves the car 21 to the lowest floor (first floor). Then, in S23, floor determination unit 1b acquires a magnetic measurement value _{M 1} of the bottom floor (1st floor). Thereafter, in S24, floor determination unit 1b, as an initial value of the bottom floor (1st floor), and registers the magnetic measurement values _{M 1} acquired in S23.

Next, in S25, the maintenance staff confirms whether the stop floor of the car 21 is the top floor, and if it is not the top floor (No in S25), in S26, the maintenance staff 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 from the lowest floor to the top floor are registered in the floor determination unit 1b. Then, when the registration of the initial value on the top floor is completed (Yes in S25), the process of S2 is terminated.

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

First, in S31, the floor determination unit 1b acquires the magnetic measurement value M measured by the magnetic sensor 2.

Next, in S32, the floor determination unit 1b confirms whether the previous value of the magnetic measurement value M has been saved, and if it has not been saved (No in S32), the floor determination unit 1b proceeds to S33, and the floor determination unit 1b , The current value of the magnetic measurement value M acquired in S31 is saved as the previous value for the next processing, and then the processing of S3 is terminated.

On the other hand, when the previous value has been saved (Yes in S32), the floor determination unit 1b confirms whether the car 21 is stopped. Specifically, first, in S34, the difference between the previous value and the current value of the magnetic measurement value M is calculated. Next, in S35, it is determined whether the difference is equal to or less than the threshold value. Then, when the difference is equal to or less than the threshold value (Yes in S35), it is determined that the car 21 may be stopped. The threshold value is determined from the amount of fluctuation at the time of stopping in consideration of the detection error of the magnetic sensor 2.

Further, the floor determination unit 1b determines whether or not a predetermined time has elapsed while the difference is equal to or less than the threshold value in order to reliably determine that the state is stopped. Specifically, first, in S36, the count-up of the stop detection timer is started. 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 value continues for 1 second. If the difference is larger than the threshold value 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 a predetermined time limit (Yes in S37), the floor determination unit 1b determines that the car 21 is stopped, and performs a process for specifying the stop floor. Specifically, first, in S38, 1 is first selected as the floor n. _{Next, in S39, the magnetic measurement value M 1} which is the initial value of the first floor and the current value of the magnetic measurement value M acquired in S 31 are compared. Then, when the difference between the two is equal to or less than the threshold value (Yes in S39), the car stop floor is determined to be the first floor (S3a).

On the other hand, in S39, when the difference is larger than the threshold value (No in S39), it is determined that the car stop floor is not the first floor, and in S3b, 1 is added to the floor n = 1 and in S39. _{The magnetic measurement value M 2} which is the initial value on the second floor and the current value of the magnetic measurement value M acquired in S31 are compared. By repeating the processes of S39 and S3b in this way, the car stop floor can be determined. If the current value of the magnetic measurement value does not match the initial value of all floors in S39, it may be determined as abnormal and notified to the control center 3.

<Relationship between door open / closed state and magnetic measurement value M>
Here, before explaining the operation detection process 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 is described by using the time chart of FIG. Will be described in relation to the button operation.

Generally, the landing door 22 is controlled to open when the car 21 arrives at the landing and then close after a certain period of time. The time limit from the start of the open operation to the completion of the closed operation can be arbitrarily set, and can be changed by maintenance personnel or the like at the request of the user.

7 (a1) and 7 (a2) are time charts showing the relationship between the door open / closed state and the magnetically measured value M when the open button 21a (or the landing button 22) and the close button 21b are 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 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 also decreases with the opening operation of the door, and the magnetic measurement value M becomes substantially constant while the door is open. After that, when the set time period elapses, the landing door 22 closes, and the magnetic measurement value M also rises with the closing operation of the door. When the user does not operate the open button 21a (or the landing button 22) or the close 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 7 (b3) are time charts showing the door open / closed 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 in (b3), the closing operation of the landing door 22 is started. Therefore, the time ct required from the start of the opening operation of the landing door 22 to the completion of the closing operation is It becomes shorter than the standard time ts. If this condition occurs frequently, it can be estimated that the standard time ts is long for the user, so that the maintenance staff may set the standard time ts shorter.

7 (c1) to 7 (c3) show the door open / closed state and magnetic measurement when the user presses the open button 21a (or the landing button 22) while the door is open to extend the open state of the landing door 22. It is a time chart which shows the value M. When the user presses the open button 21a (or the landing button 22) at the timing indicated by the solid line in (c3), the open state of the landing door 22 is extended, so that the landing door 22 is opened from the start to the closing operation. The time to required for is longer than the standard time ts. If this condition occurs frequently, it can be estimated that the standard time ts is short for the user, so that the maintenance staff may set the standard time ts longer.

7 (d1) to 7 (d3) show the door open / closed state and the magnetic measurement value M when the user presses the open button 21a (or the landing button 22) to reopen the landing door 22 while the door is closed. It is a time chart showing. When the user presses the open button 21a (or the landing button 22) at the timing during the closing operation indicated by the solid line in (d3), the landing door 22 during the closing operation is switched to the open operation, as shown in (d2). In addition, a pulse-shaped magnetic measurement value M is measured. Therefore, the inversion of the door can be detected based on the pulsed magnetic measurement value M. Even when the door is frequently reversed, the maintenance staff may set the standard time ts longer because it can be estimated that the standard time ts is short for the user. Even when the door is switched to the open operation as a result of the user touching the closed operation door, it may be treated as if the open button 21a (or the landing button 22) is pressed.

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

<Initial value registration process for detecting S4 open / close button operation>
FIG. 8 is a flow showing an initial value registration process for detecting the operation of the open / close button. In this process, the initial values of the door open operation, the door closing operation, and the door open time used when detecting the operation of the open button 21a (or the landing button 22) or the close button 21b are set to the open / close button operation determination unit 1c. This is a registration process, which is performed when the maintenance staff installs the diagnostic device 1 and the magnetic sensor 2.

First, at S4a, the maintenance staff stops the car 21 at any of the landings. After that, the door opening operation initial value registration process of S4b, the door closing operation initial value registration process of S4c, and the door opening time initial value registration process of S4d are sequentially executed. Hereinafter, S4b to S4d will be described in detail with reference to FIGS. 9 to 11.

<S4b Door open operation initial value registration process>
FIG. 9 is a flow showing 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 staff 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 value, it is determined that the change is magnetic due to the door opening operation, and the positive or negative change direction is stored in Equation 2.

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

<S4c Door closing operation initial value registration process>
FIG. 10 is a flow showing 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 staff 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 value, it is determined that the change is magnetic due to the door closing operation, and the positive or negative change direction is stored in Equation 4.

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

<S4d door open time initial value registration process>
FIG. 11 is a flow showing details of the door open time initial value registration process. First, in S4d1, a maintenance worker opens the door. 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 initial value of the door opening operation due to 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, when there is no magnetic change registered as the initial value of the door opening operation (No in S4d3), the open / close button operation determination unit 1c repeats S4d2.

After the start of the count-up, the open / close button operation determination unit 1c acquires the magnetic measurement value Mt'at S4d5, and waits until the landing door 22 is automatically closed at S4d6. That is, it waits until there is a magnetic change at the time of the door closing operation registered as the initial value of the door closing operation, and when there is no magnetic change (No in S4d7), the count-up of S4d4 is continued.

When the 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 opening time in S4d7. The initial value td of the door opening 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 details of the open / close button operation detection process 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 is fixed. If the floor is currently confirmed (Yes at S51), proceed to S52. If the floor is not fixed (No in S51), the car 21 may be running, so the process of S5 is terminated without detecting the operation of the open / close button.

Next, in S52, the open / close button operation determination unit 1c determines whether or not there is a magnetic change when the door is opened. If there is a magnetic change during the door opening operation (Yes in S52), the door opening time timer starts counting up in S53. After that, in S54, it is determined whether or not there is a magnetic change when the door is closed. If there is a magnetic change during the door closing operation (Yes in S53), the door open time timer count is stopped in S55. The measured value td'of the timer at this time is the actual door opening / closing 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. When 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 automatic closing (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, when the measured value td'is equal to or greater than the initial value td (No in S56) and the measured value td'is larger than the initial value td (Yes in S5b), the door is open longer than automatically closing. , It can be determined that the user has operated the open button 21a (see FIGS. 7 (c) and 7 (d)). Therefore, the open / close button operation determination unit 1c determines in S5c that the door open button has been operated.

Further, when the measured value td'is equal to or more than the initial value td (No in S56) and the measurement time td'is equivalent 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 the operation of the elevator, for example, when there is a person who gets in while the door is closed, the user in the car may operate the open button 21a to open the door (see FIG. 7D). At this time, the door opens during the closing operation. That is, it is an inversion operation.

When the magnetic change during the door opening operation is detected again in S58 after the closing operation is detected in S54 (Yes in S58), it can be determined that the open button 21a is operated during the door closing operation to invert the door. Therefore, the open / close button operation determination unit 1c determines that there is an open button operation in S59, and determines that there is a door reversal operation in S5g.

In addition, in order to distinguish from the case where the door is opened after being completely closed, for example, the case where the user gets in from the waiting floor after the car is in the standby state after traveling, from the closing operation detection of S54 to S58. The time until the opening operation is detected may be counted, and if it is less than a predetermined time, it may be inverted, and if it is longer than a predetermined time, it may be an opening / closing operation without inversion.

Further, the process after S53 may be performed again after S58, and the open / close button operation after reversal and the process of determining the presence / absence of reversal may be performed.

Then, in S5a, the usage status recording unit 1d records the operation of the open / close button and the number of inversions determined by the open / close button operation determination unit 1c for each floor determined in S51.

Further, when the door opening operation 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. When the time (for example, 10 minutes) that greatly exceeds the existing 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 a predetermined time (No in S5d), it returns to S53 and continues 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 the above open / close button operation detection process, the measured number of open / close button operations and the number of inversions of the door are transmitted from the notification unit 1f to the control center 3, so that the maintenance staff can grasp the usage status.

If the number of operations of the close button 21b is large, it is highly likely that the user feels that the door opening / closing time is long. Therefore, a proposal is made to shorten the setting of the door opening / closing time. 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 a longer door opening / closing time setting.

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

Further, when it is determined in S5e that the door is abnormal, the notification unit 1f notifies the control center 3, so that the maintenance staff can be contacted and the on-site response can be taken promptly.

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

As described with reference to FIG. 3, the magnetic measurement values M _n at the time of stopping on each floor are different from each other, but in general, the cables and brackets are fixed in the hoistway, and the position of the metal does not change. However, it may be damaged or misaligned due to deterioration over time or contact during running. If left unattended, the elevator may come into contact with the vehicle and stop in an emergency. Therefore, it is necessary to grasp the status of the equipment in the hoistway even if it does not affect the running.

FIG. 13 is a time chart showing the measured values of the magnetic sensor 2 when each floor is stopped when the door peripheral device on the second floor is damaged. The dotted line on the second floor 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 also changes due to the change in the arrangement of the metal. In the floor detection process of S3, if there is an initial value corresponding to the magnetic measurement value M when the floor is stopped other than the second floor, and there is no initial value corresponding to the magnetic measurement value M only when the second floor is stopped, the equipment failure determination unit 1e Determines that the door peripheral equipment on the second floor may have been damaged, and notifies the control center 3 via the notification unit 1f so that the maintenance staff can take action before the failure occurs. In addition, in order to specify that the stop floor of the car 21 is the second floor, it is necessary to refer to what floor the immediately preceding floor was, or to use information such as an acceleration sensor or a barometric pressure sensor (not shown). Can be done.

Further, FIG. 14 is a time chart showing the measured values of the magnetic sensor 2 when each floor is stopped when the 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 car equipment is damaged. For example, when the cover of the door control box on the car is removed, the magnetic measurement value M also changes due to 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 notification unit 1f notifies the control center 3 that the equipment on the car may have been damaged. , It is possible for maintenance personnel to respond before a failure occurs.

As described above, according to the diagnostic device of this embodiment or the diagnostic method, the user's investigation status of the door open / close button and the landing door are based on the output signal of the magnetic sensor installed after the fact. It is possible to train for abnormalities in peripheral equipment and equipment on the car.

1 Diagnostic device 1a Sensor receiving unit 1b Floor determination unit 1c Open / close button operation determination unit 1d Usage status 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 Landing Door 22a Landing button 22b Vision glass 23 Wiring 24 Iron pillar

Claims (8)

It is an elevator diagnostic device that performs diagnosis based on the measured values of the magnetic sensor installed on the landing side of the car.
Based on the measured values, the floor determination unit that determines the car stop floor and the floor determination unit
An open / close button operation determination unit that determines the operation of the open button and the close button based on the measured values, and an open / close button operation determination unit.
A usage status recording unit that records the operation of each floor of the open button and the close button, and
Elevator diagnostic equipment characterized by being equipped with. In the elevator diagnostic apparatus according to claim 1,
The open / close button operation determination unit detects the opening or closing operation of the door based on the changing 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 predetermined. An elevator diagnostic apparatus, characterized in that it is determined that the close button has been operated when the time is shorter than the standard time of the above. In the elevator diagnostic apparatus according to claim 1,
The open / close button operation determination unit detects the opening or closing operation of the door based on the changing 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 predetermined. An elevator diagnostic apparatus, characterized in that it is determined that the open button has been operated when the time is longer than the standard time of the above. In the elevator diagnostic apparatus according to claim 1,
The open / close button operation determination unit detects a door opening operation or closing operation based on the changing direction of the measured value, and when the changing direction of the measured value is switched before the closing operation of the door is completed. In addition, an elevator diagnostic device for determining that the door is inverted. In the elevator diagnostic apparatus according to claim 1,
The floor determination unit stores the initial value of the measured value when the door is closed for each floor, and by comparing the current measured value with the initial value of each floor, the current car stop floor can be determined. An elevator diagnostic device characterized by making a determination. In the elevator diagnostic apparatus according to claim 1,
Further, the elevator diagnostic apparatus is provided with a notification unit for transmitting the usage status recorded in the usage status recording unit to an external control center. It is an elevator diagnostic device that performs diagnosis based on the measured values of the magnetic sensor installed on the landing side of the car.
Based on the measured values, the floor determination unit that determines the car stop floor and the floor determination unit
A failure determination unit for determining a failure based on the measured value is provided.
The failure determination unit is
If the measured value is abnormal only on the specific floor, it is determined that there is an abnormality in the equipment in the hoistway near the landing door on the specific floor.
An elevator diagnostic device characterized in that when an abnormality is found in the measured value on all floors, it is determined that there is an abnormality in the equipment installed in the car. It is an elevator diagnosis method that performs diagnosis based on the measured values of the magnetic sensor installed on the landing side of the car.
Based on the measured value, the step of determining the stop floor of the car and
The step of determining the operation of the open button and the close button based on the measured value, and
A step of transmitting the operation of the open button and the closed button for each floor to the control center, and
Elevator diagnostic method characterized by being equipped with.

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