JP7050021B2 - Elevator operation status diagnosis system - Google Patents

Description

The present invention relates to a diagnostic system for diagnosing an operating state of an elevator.

As a conventional technique in the above technical field, the technique described in Patent Document 1 is known.

In this technology, an acceleration vibrometer is provided in the brake plunger of the electromagnetic brake that brakes the car of the elevator. By detecting the acceleration during operation of the brake plunger with this acceleration vibrometer, it is diagnosed whether or not there is an abnormality in the operating state when the electromagnetic brake is released and when braking.

Japanese Unexamined Patent Publication No. 2004-123270

In the above-mentioned conventional technique, since an acceleration vibrometer, that is, a sensor for detecting acceleration is provided in a movable part of the electromagnetic brake, it is difficult to maintain the sensor.

Therefore, the present invention provides an elevator operating state diagnosis system that can diagnose the operating state of the elevator with high accuracy and is easy to maintain.

In order to solve the above problems, the elevator operation state diagnosis system according to the present invention diagnoses the operation state of the elevator, and includes an acceleration detecting means provided in the car and a current sensor for detecting the motor current of the door motor. , An operation state diagnosis device including a brake diagnosis unit for determining the operation state of the brake for stopping the car based on the acceleration / deceleration information of the car from the acceleration detecting means and the current information from the current sensor. The state diagnosis device detects the door closing force operation edge based on the current information at the start of running of the car, and the brake diagnosis unit determines the operation state of the brake based on the acceleration / deceleration information after the door closing force edge. do.

According to the present invention, the operating state of the elevator can be diagnosed with high accuracy, and the maintenance of the diagnostic system becomes easy.

Issues, configurations and effects other than those described above will be clarified by the description of the following embodiments.

It is a block diagram of the car of an elevator which is one embodiment. It is a functional block diagram which shows an example of an elevator monitoring system including an elevator operation state diagnostic apparatus. It is a block diagram of an example of a hoist for an elevator and an electromagnetic brake. It is a schematic vertical sectional view near a landing and a hoistway in a building. It is a time chart which shows an example of the operation of a landing button, an electromagnetic brake, a car, and a car door in time series in the operation state of FIG. It is a time chart which shows an example of the operation of an elevator equipment when the electromagnetic brake is astringent. It is a time chart which shows an example of the relationship between the sensor output value and the operation of an elevator equipment. It is a flowchart which shows an example of the whole processing of an elevator control system including an elevator operation state diagnostic apparatus. It is a flowchart which shows the detail of the door closing force edge detection processing in FIG. It is a flowchart which shows the detail of the brake operation diagnosis processing in FIG. In the example of the operating state of the elevator shown in FIG. 4, it is a time chart showing the speed and acceleration of the car when the car travels from the first floor to the third floor. It is a flowchart which shows the diagnosis process of the operation state at the time of starting of a car executed by an elevator operation state diagnosis device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, those having the same reference number indicate the same constituent requirements or the constituent requirements having similar functions.

FIG. 1 is a configuration diagram of an elevator car according to an embodiment of the present invention.

The car 101 has a car door 102 and a door motor 103 for opening and closing the car door 102. The door motor 103 opens and closes the car door 102 via a belt 107 that connects the door motor 103 and the car door 102. Further, the door motor 103 applies a door closing force to the car door 102 via the belt 107 so that the car door 102 does not open due to torque generated while the car 101 is running.

The car 101 is driven by a hoist (FIG. 3) described later and travels in a hoistway (not shown).

When the door is opened, the car door 102 is restrained in the door closed state by a lock mechanism (not shown), but the door closed state is maintained more reliably by applying the door closing force.

The car door 102 is provided with an acceleration sensor 104 that detects the traveling state of the car 101. Further, a power supply unit (not shown) of the door motor 103 is provided with a current sensor 105 for detecting the motor current flowing through the door motor 103. The outputs of the acceleration sensor 104 and the current sensor 105 are connected to the elevator operation state diagnostic device 106 provided on the car 101 by a signal cable (not shown).

As the acceleration sensor 104, a known acceleration sensor such as a piezoelectric method or a capacitance method is applied. Further, a 1- to 3-axis type accelerometer is appropriately used. Further, as the current sensor 105, CT (Current Transformer) or the like is applied. The acceleration sensor 104 and the current sensor 105 may be connected to the elevator operation state diagnostic device 106 by wireless communication such as short-range radio.

FIG. 2 is a functional block diagram showing an example of an elevator monitoring system including an elevator operation state diagnosis device 106.

As shown in FIG. 2, the information detected by the acceleration sensor 104 and the current sensor 105 is transmitted to the elevator operation state diagnosis device 106.

The elevator operation state diagnosis device 106 includes a sensor signal receiving unit 201, a brake diagnosis unit 202, a start-up operation diagnosis unit 204, and a notification unit 203.

The sensor signal receiving unit 201 receives each information from the acceleration sensor 104 and the current sensor 105, and transmits the received information to the brake diagnosis unit 202 and the start-up operation diagnosis unit 204.

The brake diagnosis unit 202 monitors the operating state of the electromagnetic brake (FIG. 3), which will be described later, based on the information transmitted from the sensor signal reception unit 201, and diagnoses the presence or absence of an abnormality such as astringency.

The operation diagnosis unit 204 at startup monitors the operating state of the car 101 based on the information transmitted from the sensor signal receiving unit 201, and diagnoses the presence or absence of an operation abnormality such as popping out or reversing of the car 101 at startup. do.

The brake diagnosis unit 202 and the start-up operation diagnosis unit 204 transmit the diagnosis result to the notification unit 203.

The notification unit 203 transmits the received diagnosis result to the server 310 installed in the control center 300 located at a location geographically distant from the installation location of the elevator via the communication network 250.

Maintenance work of the target elevator is performed according to the diagnosis result received by the server 310.

In the present embodiment, the elevator operation state diagnosis device 106 is configured by a computer system including a CPU, a memory, and the like. The computer system functions as each part (201 to 204) of the elevator operation state diagnosis device 106 by executing the program stored in the memory. The computer system may be configured by a microcomputer. Further, ASIC or FPGA may be applied instead of the computer system.

FIG. 3 is a configuration diagram of an example of a hoist for an elevator and an electromagnetic brake.

The hoisting machine 301 is rotationally driven by a drive power source (for example, an inverter device) included in an elevator control device (not shown). When the hoisting machine 301 is driven, the main rope (not shown) wound around the hoisting machine 301 is driven. When the main rope is driven, the car 101 connected to the main rope travels in the vertical direction.

The hoisting machine 301 is provided with an electromagnetic brake for stopping the rotation of the hoisting machine 301. The electromagnetic brake includes electromagnets 305a and 305b, brake shoes 303a and 303b driven by the electromagnets 305a and 305b, respectively, and springs 304a and 304b for urging the brake shoes 303a and 303b, respectively.

When the car 101 is stopped, the brake shoes 303a and 303b are pressed against the hoisting machine 301 by the urging force of the springs 304a and 304b, respectively. As a result, the rotation of the hoisting machine 301 is stopped, and the car 101 is stopped.

When the car 101 is traveling, the electromagnets 305a and 305b are energized by a command from the brake control device 302, and the brake shoes 303a and 303b are driven by the electromagnetic force of the electromagnets 305a and 305b. As a result, the hoisting machine 301 becomes rotatable and the car 101 moves up and down.

Here, due to aged deterioration of the springs 304a, 304b, the electromagnets 305a, 305b, and other brake mechanism portions, the brake shoes 303a, 303b may become difficult to move even when energized. In this case, the time from the start of energization until the electromagnetic brake is released becomes longer than in the normal state, and if the deterioration further progresses, the electromagnetic brake may not be released. As will be described later, according to the elevator operation state diagnosis device 106 of the present embodiment, such a brake astringent state can be detected at an early stage.

Next, the operating state of the elevator will be described with reference to FIG. 4-7.

FIG. 4 is a schematic vertical sectional view of the vicinity of the landing and the hoistway in the building where the elevator is installed. FIG. 4 shows an example of the operating state of the elevator.

In the state example shown in FIG. 4, the car 101 waiting on the first floor runs in response to the call registered by the user by the landing button 401 on the third floor.

In the present embodiment, the door closing force is applied to the car door 102 when the door is closed including the standby time. If the call is not created for a predetermined time or longer and the standby state continues, the door closing force is released in order to reduce power consumption.

FIG. 5 is a time chart showing an example of the operation of the landing button, the electromagnetic brake, the car (speed), and the car door, which are elevator devices, in the operating state of FIG. 4 in chronological order.

For the car waiting on the first floor, if the waiting state continues without creating a call for a predetermined time (period A), the door closing force is released (period B).

After that, when the user on the 3rd floor presses the landing button and the call is registered, the signal of the landing button is turned on and the door closing force is applied to the car door before the start of driving (period C). ..

After the door closing force is applied, the electromagnetic brake is released and the car starts running (period D). Here, in a normal operating state, the time Δt from the application of the door closing force to the start of traveling is usually a substantially constant value.

When the car arrives at the 3rd floor where the landing call is registered after the start of driving, the electromagnetic brake is operated to stop the car (period E).

After that, the car door is opened and the user is allowed to board (period F).

When the car door closes after the user gets on the 3rd floor, the car starts running toward the floor registered by the user on the operation panel in the car (period G).

FIG. 6 is a time chart showing an example of the operation of the elevator equipment in the case where the electromagnetic brake is astringent, as in FIG. The difference from the normal state shown in FIG. 5 will be described.

In FIG. 6, the periods A and B are the same as in FIG. 5, but when the electromagnetic brake is stiff, the release operation of the electromagnetic brake is delayed in the period C from the normal time. That is, the time Δt'from the application of the door closing force to the start of traveling is longer than the time Δt in the normal state (FIG. 5). Therefore, when Δt'is longer than Δt, it can be determined that the electromagnetic brake is astringent.

FIG. 7 is a time chart showing an example of the relationship between the sensor output value and the operation of the elevator equipment.

In the present embodiment, the presence or absence of the door closing force is detected by detecting the motor current of the door motor 103 with the current sensor 105 provided in the door motor 103. Further, by detecting the traveling acceleration of the car with the acceleration sensor 104 provided on the car door 102, the traveling state such as the presence or absence of traveling is detected.

When the door closing force is applied, the door motor generates torque, so that the motor current flows. Therefore, during the period A in FIG. 7, the motor current for applying the door closing force (α [ampere] in FIG. 7) is output from the current sensor.

When the motor current of the door motor is cut off in order to release the door closing force, the output value of the current sensor becomes zero (period B).

After that, when the call is registered by the landing button, the door closing force is applied again, so that the output value of the current sensor becomes α (period C).

After that, the electromagnetic brake is released and the car starts running. At this time, the output value of the accelerometer increases to the acceleration until the steady speed is reached (β [m / s ² ] in FIG. 7), and becomes zero when the speed of the car becomes constant (period D).

When arriving on the 3rd floor, the car will be decelerated, so the output value of the accelerometer will be the deceleration until the car stops (-γ [m / s ² ] in Fig. 7), and the electromagnetic brake will operate. It becomes zero when the car is stopped (period E).

After that, when the car door opens and closes, the motor current value accompanying the opening and closing is output from the current sensor (period F), and when traveling to the registered destination floor, the acceleration value of the car is output from the acceleration sensor. (Period G).

Next, the means for diagnosing the brake operating state in the present embodiment will be described with reference to FIGS. 8-10. Hereinafter, "step S ..." in the figure is simply referred to as "S ...".

FIG. 8 is a flowchart showing an example of the entire processing of the elevator control system including the elevator operation state diagnosis device 106 (FIG. 2) in the present embodiment.

In S801, the elevator control system executes the initial processing.

Next, in S802, the elevator control system executes a normal operation process.

After that, in S803, the elevator operation state diagnosis device 106 executes the edge detection process of the door closing force. Here, the edge of the door closing force indicates the transition from the state where the door closing force is zero to the state where the door closing force is applied in the standby state.

After that, in S804, the brake diagnosis unit 202 in the elevator operation state diagnosis device 106 executes the brake operation diagnosis process.

After that, the elevator control system repeatedly executes the process from S802.

FIG. 9 is a flowchart showing the details of the door closing force edge detection process (S803) in FIG.

In S901, the elevator operation state diagnosis device 106 stores the output information Si of the current sensor before the update as the previous output information Si'of the current sensor.

Next, in S902, the elevator operation state diagnosis device 106 acquires the output of the current sensor by the sensor signal receiving unit (FIG. 2).

Next, in S903, the elevator operation state diagnosis device 106 determines whether or not there is an output from the current sensor based on the output acquired in S902.

When there is an output of the current sensor (Yes in S903), in S904, the elevator operation state diagnosis device 106 stores "Yes" (for example, Si = 1) as the output information Si of the current sensor.

Further, when there is no output of the current sensor (No in S903), in S905, the elevator operation state diagnosis device 106 stores "none" (for example, Si = 0) as the output information Si of the current sensor.

Here, since the door closing force edge detection process (S803 in FIG. 8) is always executed while the elevator is operating, the output information Si of the current sensor 105 is constantly updated by the process of S901-S905 described above.

After executing S904 or S905, in S906, the elevator operation state diagnosis device 106 determines whether or not the door closing force application edge is detected. That is, the elevator operation state diagnosis device 106 determines whether the previous output information Si'is zero and the output information Si updated in S904 and S905 is 1.

When it is determined that "Si'= 0 and Si = 1" (Yes in S906), in S907, the elevator operation state diagnosis device 106 determines that the door closing force application edge is present. In this case, in the standby state of the car, the state of releasing the door closing force is changed to the state of applying the door closing force. Further, when it is not determined that "Si'= 0 and Si = 1" (No in S906), in S908, the elevator operation state diagnosis device 106 determines that there is no door closing force application edge.

The elevator operation state diagnosis device 106 ends a series of processes after executing S907 or S908.

FIG. 10 is a flowchart showing the details of the brake operation diagnosis process (S804) in FIG.

In S111, the brake diagnosis unit 202 (FIG. 2) in the elevator operation state diagnosis device 106 has a door closing force edge, that is, based on the result (S907, S908) of the door closing force edge detection process (FIG. 9). Whether or not the door closing force application has started is determined. The brake diagnosis unit 202 executes S112 when there is a door closing force operation edge (Yes in S111), and ends the brake operation diagnosis process when there is no door closing force operation edge (No in S111). If there is a door closing force operation edge, the landing call is created in the standby state of the car and the door closing force is released, and the door closing force is reapplied.

At S112, the brake diagnosis unit 202 starts measuring the time Δt (see FIG. 5) from the time when the door closing force is applied to the time when the car starts running.

Next, in S113, the brake diagnosis unit 202 acquires the output value information of the acceleration sensor 104 received by the sensor signal reception unit 201.

Based on the information acquired in S113, the brake diagnosis unit 202 determines in S114 whether or not there is an output from the acceleration sensor 104. If there is an output (Yes in S114), then S115 is executed, and if there is no output (No in S114), the brake diagnosis unit 202 executes S113 again.

At S115, the brake diagnosis unit 202 ends the measurement of the time Δt and obtains the measured value of the time Δt. The time Δt corresponds to the time of the period C in FIG. 5-7 described above.

Next, in S116, the brake diagnosis unit 202 compares the measured Δt with the threshold value T ₀ for determining the abnormality of Δt, and Δt is larger than T ₀ (Δt> T ₀ ). Is determined. Here, T ₀ is set in advance in the brake diagnosis unit 202. The brake diagnosis unit 202 may store the measured value of Δt during normal operation and use it as _T0 . Further, the upper limit value of the brake operation time that is theoretically or theoretically permissible may be set to T ₀ .

If the brake diagnostic unit 202 determines that Δt is greater than T ₀ (Yes in S116), then S117 is executed and Δt is not greater than T ₀ (ie, Δt ≦ T ₀ ). When determining (No in S116), then S118 is executed.

In S117, the brake diagnosis unit 202 determines that there is a firmness of the electromagnetic brake because Δt> T ₀ , that is, it takes more time from the start of applying the door closing force to the start of running than in the normal state. do.

Further, in S118, the brake diagnosis unit 202 determines that Δt ≦ T ₀ , that is, the time from the start of applying the door closing force to the start of traveling is within the allowable range, and the operation of the electromagnetic brake is normal.

After executing S117 or S118, the brake diagnosis unit 202 sends the determination result in S117 or S118 to the notification unit 203 (FIG. 2) in S119. The notification unit 203 notifies the server 310 in the control center 300 of the determination result from the brake diagnosis unit 202 via the communication network 250 (FIG. 2).

As described above, according to the present embodiment, the operating state of the electromagnetic brake is based on the output of the acceleration sensor provided on the car door which is a part of the car and the output of the current sensor which detects the motor current of the door motor. Can be diagnosed. Therefore, maintenance of these sensors is easy while ensuring diagnostic accuracy.

Next, with reference to FIGS. 11 and 12, the diagnostic means of the operating state at startup in the present embodiment will be described.

Here, in the present embodiment, the start-up operation state is a car reversal operation and a pop-out operation at the start of traveling. In the inversion operation and pop-out operation, when the detection error of the load detection device that detects the load in the car is large, the error of the actual load size and the load information from the load detection device used for start control becomes large. , It occurs because the torque of the hoist is not set properly at the start of running.

According to the present embodiment, as described below, the reversing operation and the popping operation can be detected with high accuracy, so that early maintenance work becomes possible.

FIG. 11 is a time chart showing the speed and acceleration of the car when the car travels from the first floor to the third floor in the example of the operating state of the elevator shown in FIG. In FIG. 11, the velocity and acceleration are shown for each of the cases of normal operation (normal operation) (a), reverse operation (b), and pop-out operation (c). In each case, the horizontal axis represents time, and the vertical axis represents velocity and acceleration with the ascending direction as positive.

As shown in FIG. 11, (b), the car waiting on the first floor during the reversing operation is opposite to the traveling direction (ascending direction) toward the third floor where the landing call is registered at the start of traveling. It moves in the direction (downward direction), and then starts normal running in the ascending direction. Therefore, as shown by the acceleration in (b), the car is rapidly accelerated and decelerated in the downward direction immediately after the start of traveling.

As shown in FIG. 11, (c), the car that was waiting on the first floor at the time of the pop-out operation suddenly goes in the traveling direction (ascending direction) toward the third floor where the landing call is registered at the start of traveling. It moves and then starts normal running in the ascending direction. Therefore, as shown by the acceleration in (c), the car is rapidly accelerated and decelerated in the ascending direction immediately after the start of traveling.

FIG. 12 is a flowchart showing a diagnostic process of the starting operation state of the car executed by the elevator operation state diagnosis device 106 (FIG. 2).

In S120, does the start-up operation diagnosis unit 204 (FIG. 2) in the elevator operation state diagnosis device 106 have a door closing force edge based on the result (S907, S908) of the door closing force edge detection process (FIG. 9)? That is, it is determined whether or not the door closing force application is started. The start-up operation diagnosis unit 204 executes S121 when there is a door closing force operation edge (Yes in S120), and then executes S130 when there is no door closing force operation edge (No in S120). If there is a door closing force operation edge, the landing call is created in the standby state of the car and the door closing force is released, and the door closing force is reapplied.

In S121, the start-up operation diagnosis unit 204 acquires the output value information of the acceleration sensor 104 received by the sensor signal reception unit 201 (FIG. 2). In this way, since the output value information of the acceleration sensor 104 is acquired when there is a door closing force edge, the elevator is not used at the time of the start-up operation diagnosis, that is, the car runs unmanned. The operating state at the start can be diagnosed. Therefore, the movement of the car is not affected by the movement of the passenger in the car (for example, shaking), so that the diagnostic accuracy is improved.

After executing S121, in S122, the start-up operation diagnosis unit 204 determines whether or not there is sudden acceleration / deceleration immediately after the start of traveling, based on the information acquired in S121. That is, in S122, the start-up motion diagnosis unit 204 determines the presence or absence of sudden acceleration and deceleration during the period D'as shown in FIGS. 11 (b) and 11 (c) at the start of traveling. In addition, in order to detect the state of sudden acceleration and sudden deceleration immediately after the start of traveling by the acceleration sensor, the elevator operation state diagnosis device 106 acquires the information of the acceleration sensor at a time interval shorter than the period D'(FIG. 11). For example, for the inversion operation, preferably, the information of the acceleration sensor is acquired at intervals of 10 ms with D'as 100 ms. Further, for the pop-out operation, preferably, the information of the acceleration sensor is acquired at intervals of 10 ms with D'set to 500 ms.

The start-up operation diagnosis unit 204 executes S123 when there is a sudden acceleration / deceleration immediately after the start of running (Yes in S122), and then reverses or reverses when there is no sudden acceleration / deceleration immediately after the start of running (No in S122). Assuming that pop-out has not occurred, S130 is executed next.

In S123, the start-up motion diagnosis unit 204 records the acceleration direction (Ys) at the start of travel based on the information at the start of travel used in S122 among the information acquired in S121. In the operating state of the present embodiment, the direction of sudden acceleration during the reversing operation is the downward direction, and the direction of the sudden acceleration during the pop-out operation is the upward direction.

Next, in S124, the start-up motion diagnosis unit 204 determines whether the car is accelerated for a predetermined time (Δs) or more based on the information of the acceleration sensor continuously acquired from the time of executing S122. .. In S124, the start-up operation diagnosis unit 204 determines whether the acceleration time of the car after the period D'in the period D in FIG. 11 is a predetermined time (Δs) or more. For example, Δs can be set to the acceleration time required when moving one floor such as the second floor to the third floor.

The start-up motion diagnosis unit 204 executes S125 when the acceleration time is longer than the predetermined time (Yes in S124), and when the acceleration time is less than the predetermined time (No in S124), then Execute S126.

In S125, the start-up motion diagnosis unit 204 records the acceleration direction (Yn) at the start of traveling that has continued for a certain period of time. In the operating state of FIG. 11, Yn is in the direction toward the third floor, that is, in the ascending direction.

Further, in S129, the start-up operation diagnosis unit 204 determines that the elevator does not move after sudden acceleration and deceleration because there is no acceleration for a predetermined time or longer, and a failure during running is detected.

After executing S125, in S126, the start-up operation diagnosis unit 204 compares the acceleration direction (Ys) immediately after the start of travel recorded in S123 with the travel direction (Yn) after the old acceleration / deceleration recorded in S125. , It is determined whether both are the same (Ys = Yn). When Ys and Yn are the same, the start-up operation diagnosis unit 204 then executes S127, and when Ys and Yn are different, then S128 is executed.

In S127, the start-up motion diagnosis unit 204 determines that a pop-out motion has been detected. In the present embodiment, Ys = Yn = ascending direction, and the car is rapidly accelerated and decelerated in the ascending direction immediately after the start of traveling, and then continues traveling in the ascending direction.

Further, in S128, the start-up operation diagnosis unit 204 determines that the inversion operation has been detected. In the present embodiment, Ys = descending direction and Yn = ascending direction, and the car is rapidly accelerated and decelerated in the descending direction immediately after the start of traveling, and then travels in the ascending direction.

When determining No in S120 or S122, or after executing either S127-129, the startup operation diagnosis unit 204 then executes S130. In S130, the start-up operation diagnosis unit 204 sends the determination result to the notification unit 203 (FIG. 2). The notification unit 203 notifies the server 310 of the control center 300 via the communication network 250 (FIG. 2) of the determination result from the operation diagnosis unit 204 at startup. In S130, the notification unit 203 notifies the control center 300.

As described above, according to the present embodiment, at the time of starting the car, based on the output of the acceleration sensor provided on the car door which is a part of the car and the output of the current sensor which detects the motor current of the door motor. The operating status can be diagnosed. Therefore, maintenance of these sensors is easy while ensuring diagnostic accuracy.

The present invention is not limited to the above-described embodiment, and includes various modifications. For example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to the one including all the described configurations. Further, it is possible to add / delete / replace a part of the configuration of each embodiment with another configuration.

For example, the acceleration sensor is not limited to the car door, but may be provided on a part of the car such as a side plate, a floor, and a ceiling constituting the car room.

Further, a load meter or the like may be used as the acceleration detecting means of the car. Further, the stress applied to the components of the car due to the acceleration / deceleration may be detected by a strain sensor or the like.

101 Car 102 Car door 103 Door motor 104 Acceleration sensor 105 Current sensor 106 Elevator operation status diagnostic device 107 Belt 201 Sensor signal receiver 202 Brake diagnostic unit 203 Notification unit 204 Startup operation diagnostic unit 250 Communication network 300 Control center 301 Winding machine 302 Brake control device 303a, 303b Brake shoe 304a, 304b Spring 305a, 305b Electromagnet 310 Server 401 Landing button

Claims (6)

In the elevator operation status diagnosis system that diagnoses the operating status of the elevator,
Acceleration detection means provided in the car and
A current sensor that detects the motor current of the door motor and
An operation state diagnosis device including a brake diagnosis unit that determines the operation state of the brake that stops the car based on the acceleration / deceleration information of the car from the acceleration detection means and the current information from the current sensor.
Equipped with
The operation state diagnostic device detects the door closing force operation edge based on the current information at the start of traveling of the car .
The brake diagnostic unit is
An elevator operation state diagnosis system comprising determining the operation state of the brake based on the acceleration / deceleration information after the door closing force edge. In the elevator operation state diagnosis system according to claim 1,
The brake diagnosis unit is an elevator operation state diagnosis system characterized by determining the tightness of the brake. In the elevator operation state diagnosis system according to claim 1,
The operation state diagnosis device includes a start-up operation diagnosis unit that determines the operation state of the car at the time of start-up based on the acceleration / deceleration information and the current information.
The elevator operation state diagnosis system is characterized in that the start-up operation diagnosis unit determines the operation state of the car at the time of start-up based on the acceleration / deceleration information after the door closing force edge. In the elevator operation state diagnosis system according to claim 3,
The start-up operation diagnosis unit is an elevator operation state diagnosis system characterized by determining the inversion operation and the pop-out operation of the car at the time of the start-up.
Tem. In the elevator operation state diagnosis system according to claim 1,
The operation state diagnosis device is an elevator operation state diagnosis system including a notification unit for notifying a server provided in a control center of a determination result of the operation state of the brake. In the elevator operation state diagnosis system according to claim 3,
The operation state diagnosis device is an elevator operation state diagnosis system including a notification unit for notifying a server provided in a control center of a determination result of the operation state of the car.

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