JP2018024490A - Elevator system - Google Patents

Abstract

An object of the present invention is to reduce the time required for restarting an elevator when recovering from a power failure. A car position calculation device that calculates an absolute position of the car based on a position detection signal indicating a car detection position that moves up and down an elevator hoistway and an encoder signal that includes a running speed and a running position of the car; An elevator operation control device that controls the operation of the elevator, a power failure detection device that detects a power failure of the power source that supplies power to the car position calculation device, a brake release detection device that detects whether a manual brake release operation is performed, and a power failure A storage device that stores a detection result of the brake release detection device when a power failure is detected by the detection device, and the elevator operation control device refers to the storage content of the storage device when the power is restored, and performs manual brake release operation. When the information indicating the execution cannot be obtained, the operation of the car is controlled based on the absolute position of the car calculated by the car position calculating device. [Selection] Figure 1

Description

  The present invention relates to an elevator system having an electronic safety microcomputer that calculates the absolute position of a car and an elevator control microcomputer that controls the operation of the car.

  As background art in this technical field, there is JP-A-2001-316054 (Patent Document 1). In this publication, the control device includes a safety microcomputer (first arithmetic unit) that controls a safety device installed in the elevator, and an elevator control microcomputer (second arithmetic unit) that controls the operation of the elevator. The safety microcomputer receives the governor encoder signal (first signal) from the governor encoder attached to the rotating shaft of the lower governor pulley, and the safety microcomputer calculates the governor encoder signal. Process, monitor the speed, displacement, and driving direction of the car, while the elevator control microcomputer receives the motor encoder signal (second signal) from the motor encoder attached to the rotary shaft of the hoisting machine An elevator control microcomputer is described in which an elevator control microcomputer controls a hoisting machine by calculating and processing motor encoder signals to determine the position and speed of a car.

JP 2001-316054 A

  However, when the elevator apparatus described in Patent Document 1 tries to use the absolute car position calculated by the electronic safety microcomputer, the brake is released when a power failure occurs, and then the actual car position and The car absolute position calculated by the electronic safety microcomputer is inconsistent. In order to avoid this, the car must be driven to the end floor every time the power is turned OFF / ON, and then returned to the floor, which takes a long time to return and the elevator service deteriorates. .

  Therefore, an object of the present invention is to provide an elevator system that can shorten the time required to restart the elevator when the power supply is restored from a power failure.

  In order to solve the above-described problems, the present invention determines the absolute position of the car based on a position detection signal indicating a detection position of a car moving up and down the elevator hoistway and an encoder signal including the traveling speed and traveling position of the car. Car position calculation device to be calculated, elevator operation control device to control the operation of the elevator, power failure detection device to detect a power failure of the power supply that supplies power to the car position calculation device, and whether to perform manual brake release operation And a storage device for storing the detection result of the brake release detection device when a power failure is detected by the power failure detection device, and the elevator operation control device is configured to restore the power supply when When the information stored in the storage device is referred to and information indicating the execution of the manual brake releasing operation is not obtained, the calculation by the car position calculation device is performed. And controlling the operation of the car based on the absolute position of the car.

  ADVANTAGE OF THE INVENTION According to this invention, the time required to restart an elevator at the time of recovery from a power failure can be shortened. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is a circuit block diagram of the control system in the elevator system which shows one Example of this invention. It is a flowchart for demonstrating the processing operation of the control system and elevator control microcomputer in an elevator system.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a circuit configuration diagram of a control system in an elevator system showing an embodiment of the present invention. In FIG. 1, the control system power supply in the elevator system transmits and receives information to and from the electronic safety power source + Vo, which is the power source of an electronic safety microcomputer (not shown) that controls a safety device installed in the elevator. The power supply + V that is the power source of the elevator control microcomputer 9 that controls the operation of the elevator (not shown) and the backup power source 1 at the time of power failure constituted by a battery and a charger are provided.

  A power failure detection device 2 for detecting a power failure of the electronic safety power source + Vo is disposed between the electronic safety power source + Vo serving as a power source of the electronic safety microcomputer and GND (ground). The power failure detection device 2 is configured by a relay, a conductor, or the like. For example, the power failure detection device 2 is inserted into a relay coil 3 that is demagnetized at the time of a power failure of the electronic safety power supply + Vo, a power supply circuit that connects the backup power source 1 and GND (ground) at the time of a power failure, and the relay coil 3 is demagnetized. And b contact (power failure detection contact) 4 for closing the power feeding circuit. At this time, when the power failure detection device 2 detects a power failure of the electronic safety power source + Vo, that is, when the electronic safety power source + Vo is lost, the relay coil 3 is demagnetized and the b contact 4 is closed.

  The brake release detection device 5 includes a switch 8 inserted in a power supply circuit that connects the backup power supply 1 and GND (ground) at the time of a power failure. The brake release detection device 5 is a device that detects whether or not a manual brake release operation is performed. For example, when the brake release operation is detected, that is, during the rescue operation, the manual brake release operation is performed. Sometimes it is composed of a switch 8 that closes the feed circuit. When the switch 8 is closed, a manual brake release signal is output from the switch 8. As the switch 8, a rescue operation door zone BZ switch, a manual brake release device take-off switch, a manual release detection switch attached to a brake, or the like can be used. When the manual brake releasing operation is not performed during the rescue operation, the switch 8 opens the power feeding circuit. Here, a switch 8 is illustrated in which the removal switch is closed when the manual brake releasing device is taken out of the storage location.

  The above-described switch 8 that is the brake release detection device 5 is shown as the switch 8 that is to be removed when the manual brake release device is taken out of the storage place. Use the operation signal of the display device (door zone BZ, etc.) that displays the signal as the manual brake release signal, or use the operation signal of the manual release detection switch that will be closed when mounted on the brake as the manual brake release signal Can do.

  The storage device 6 configured by a keep relay or the like is configured as a storage unit that stores the detection result of the brake release detection device 5 when a power failure is detected by the power failure detection device 2. At this time, the storage device 6 is inserted in series with the switch 8 and the b contact (contact for detecting a power failure) 4 in a power supply circuit that connects the backup power source 1 and GND (earth) during a power failure. The contacts (power failure detection contacts) 4 are inserted into the power supply circuit connecting the set coil 7 to be excited and the power supply + V of the elevator control microcomputer 9 and the elevator control microcomputer 9 on condition that the power supply circuit is closed. When the set coil 7 is energized, the power supply circuit is closed and the contact a (the set coil contact) 11 that outputs an operation signal to the elevator control microcomputer 9 and the power supply + V of the elevator control microcomputer 9 are connected to the operation signal. In response, a reset signal output from the elevator control microcomputer 9 is received and excited to reset the calculated value to the electronic safety microcomputer. It consists of coil 10.

  The elevator control microcomputer 9 is a computer device having information processing resources such as a CPU (Central Processing Unit), a memory, and an input / output interface, for example, and transmits and receives information to and from an electronic safety microcomputer (not shown). It is configured as an elevator operation control device that controls operation.

  An electronic safety microcomputer (not shown) is a computer device having information processing resources such as a CPU, a memory, an input / output interface, and various sensors, for example, and a position detection indicating a detection position of a car moving up and down the elevator hoistway. The car position calculation device is configured to calculate the absolute position of the car based on the signal and the encoder signal including the running speed and the running position of the car. Specifically, the electronic safety microcomputer includes an encoder signal of a duplex encoder (a device that measures the traveling speed of the car and outputs an encoder signal including the traveling speed and traveling position of the car), and a position detection device ( Detecting the position of a device (combined with a shield plate installed corresponding to each floor on the hoistway side and an optical sensor that is attached to the car side and detects the position of the car by blocking the light path by the shield plate) The car position calculation device is configured to calculate the absolute position of the car using a signal (positive signal). For this reason, when the electronic safety power supply + Vo is normal, the absolute position of the car can be calculated by the electronic safety microcomputer. Therefore, the elevator control microcomputer 9 determines the absolute position of the car calculated by the electronic safety microcomputer when the elevator returns. It is possible to use. However, when the electronic safety power supply + Vo goes out of power, the electronic safety microcomputer cannot detect the encoder signal (output signal) of the duplex encoder. If the rescue operation is performed in this state, the car position (absolute position of the car) will not be known. Therefore, it is necessary to move the car to the end floor and check the car position, and then restart the elevator.

  Therefore, in this embodiment, a power failure detection device 2 for detecting a power failure of the electronic safety power supply + Vo and a brake release detection device 5 for detecting that the rescue operation has been performed from a brake release operation (operation) are provided, and rescue is performed in the event of a power failure. A distinction is made as to whether operation has been performed or rescue operation has not been performed at the time of a power failure.

  Specifically, when a rescue operation is performed at the time of a power failure, a reset signal is given to the reset coil 10 to reset the car position (the absolute position of the car) held by the electronic safety microcomputer, and the car is temporarily stopped. After moving to the floor and checking the car position, restart the elevator.

  On the other hand, if the rescue operation is not performed at the time of power failure, the car position held by the electronic safety microcomputer can be used. Car position correction can be easily performed by driving.

  At this time, in this embodiment, the power failure detection device 2 for detecting the power failure of the electronic safety power supply + Vo, the brake release detection device 5 for detecting whether or not the manual brake release operation is performed, and the power failure detection by the power failure detection device 2, A storage device 6 for storing the detection result of the brake release detection device 5 is provided, and a signal indicating the content (state) stored in the storage device 6 is taken into the elevator control microcomputer 9 and monitored.

  When the electronic safety power supply + Vo is normal, the relay coil 3 of the power failure detection device 2 is excited and its b contact 4 is in an open state. However, when the electronic safety power supply + Vo has a power failure, the relay coil 3 of the power failure detection device 2 is demagnetized and its b contact 4 is closed (in a closed state).

  If the rescue operation is performed when the power is lost, the switch 8 of the brake release detection device 5 connected to the backup power supply 1 at the time of power failure is closed, and the set coil 7 is excited by the manual brake release signal. Further, the a contact 11 is closed by the excitation of the set coil 7, and an operation signal indicating the closed state of the a contact 11 is taken into the elevator control microcomputer 9.

  On the other hand, if the rescue operation is not performed even if the electronic safety power supply + Vo is interrupted, the switch 8 of the brake release detection device 5 remains open, and the set coil 7 is not excited. For this reason, the a contact 11 is in the open state, and the operation signal indicating the closed state of the a contact 11 is not taken into the elevator control microcomputer 9.

  As described above, after the electronic safety power supply + Vo is restored (after returning to the normal state), the elevator control microcomputer 9 receives the operation signal indicating the closed state of the contact a 11 when the rescue operation is performed at the time of a power failure. Case) and when the rescue operation is not performed at the time of a power failure (when the operation signal indicating the closed state of the contact a 11 is not captured), the operation of the elevator can be controlled. That is, the elevator control microcomputer 9 refers to the stored contents of the storage device 6 when the electronic safety power supply + Vo is restored, and controls the operation of the car according to whether or not the manual brake releasing operation is performed.

  Specifically, the elevator control microcomputer 9 refers to the storage contents of the storage device 6 and, when information indicating the execution of the manual brake release operation cannot be obtained, that is, as a reference result for the storage device 6, the brake release detection device 5 is obtained on the condition that information indicating that the manual brake releasing operation has not been detected is obtained, it is determined that the rescue operation is not performed in the event of a power failure of the electronic safety power supply + Vo, and the electronic safety microcomputer is determined based on the determination result. The car absolute position calculated by the (car position calculating device) is validated, and the car operation is controlled based on the car absolute position calculated by the electronic safety microcomputer. For example, the elevator control microcomputer 9 operates the car on the nearest floor. For this reason, at the time of recovery from a power failure of the electronic safety power supply + Vo, it is possible to reduce the time required to restart the elevator.

  On the other hand, the elevator control microcomputer 9 determines that the rescue operation has been performed at the time of a power failure of the electronic safety power supply + Vo on the condition that the brake release detection device detects the execution of the manual brake release operation as a reference result for the storage device 6. Then, the absolute position of the car calculated by the electronic safety microcomputer (car position calculating device) is invalidated, and at least control for driving the car to the end floor is executed.

  FIG. 2 is a flowchart for explaining the processing operation of the control system and the elevator control microcomputer in the elevator system.

  First, when an elevator power failure occurs due to the loss of the power source + V (step S1) and the manual brake is released (step S2), it is determined whether or not the manual brake release by the brake release detection device 5 has been performed in the control system. (Step S3). If brake release is not detected by the brake release detection device 5 and NO in step S3, the process proceeds to step S8. If YES in step S3, that is, if a manual brake release operation is performed, the control system Then, it is determined whether or not the electronic safety power source + Vo has been lost (step S4). That is, it is determined whether or not the switch 8 of the brake release detection device 5 and the relay b contact 4 of the power failure detection device 2 are closed and the set coil 7 in the storage device 6 is connected to the backup power source 1 at the time of power failure and excited. The

  As a result, when the brake release detection device 5 detects that the brake release operation has been performed and the power failure detection device 2 detects that the electronic safety power source + Vo has been lost, that is, if YES in step S4, manual operation is performed. The brake release signal becomes valid (step S5), the set coil (keep relay set coil) 7 in the storage device 6 is energized, and its a contact 11 is held in the ON state (closed state) (step S6).

  On the other hand, if the electronic safety power source + Vo is not lost and the answer is NO in step S4, the relay coil 3 is energized and its b contact 4 is in the open state, so that even if the manual brake releasing operation is performed (the switch 8 is closed). However, the manual brake release signal becomes invalid (step S7). In this case, even if step S8 is closed, the set coil 7 is not energized and is in a non-energized state, so the a contact 11 is held in the OFF state (open state) (step S8).

  Thereafter, when the elevator power supply is restored along with the restoration of the power supply + V (step S9), the elevator control microcomputer 9 determines whether or not the a contact 11 of the keep relay in the storage device 6 is in the ON state (step S10). In the case of YES in step S10, when the ON state of the contact a 11 is detected, that is, when a rescue operation is performed at the time of a power failure, the elevator control microcomputer 9 assumes that the rescue operation is performed at the time of a power failure. The reset signal is sent to the reset coil 10 and the reset signal is transmitted to the electronic safety microcomputer so that the electronic safety microcomputer ignores the absolute position of the car (the absolute position of the car). Thereby, the electronic safety microcomputer resets the detected car absolute position, and the elevator control microcomputer 9 performs processing for ignoring the car absolute position detected by the electronic safety microcomputer and operating the car to the end floor (step S11). . Thereafter, an operation for restoring the elevator is performed (step S14), and the processing in this routine is terminated.

  On the other hand, if the elevator control microcomputer 9 is NO in step S10, and the OFF state of the contact a 11 is detected, that is, if the rescue operation is not performed during a power failure, the elevator safety microcomputer 9 records in the electronic safety microcomputer. By making the position of the car (absolute position of the car) effective (step S12) and using the car absolute position recorded in the electronic safety microcomputer (the car absolute position detected by the electronic safety microcomputer), the car is operated on the nearest floor. Position correction is performed (step S13). Thereafter, an operation for restoring the elevator is performed (step S14), and the processing in this routine is terminated.

  In step S10, the elevator control microcomputer 9 checks the state of the set coil 7, and if the set coil 7 is energized, the switch 8 of the brake release detection device 5 is closed and the rescue operation by performing the brake release operation is performed. In order to show that it was done, the car position recorded in the electronic safety microcomputer can be ignored (the absolute position of the car is reset), the car can be operated to the end floor, the car position can be confirmed, and then the elevator can be returned it can. On the other hand, if the set coil 7 is demagnetized, the elevator control microcomputer 9 can return the elevator after operating the car on the nearest floor using the car position recorded in the electronic safety microcomputer.

  In the embodiment described above, the switch 8 that is closed when the manual brake release operation is performed as the brake release detection device 5 that detects the manual brake release operation, and the relay coil as the power failure detection device 2 that detects a power failure of the electronic safety power source + Vo. 3 b contact 4, the set coil 7 of the storage device 6 for storing that the rescue operation was performed in the event of a power failure by being connected in series between these and the backup power source 1 in the event of a power failure, and the excitation of the set coil 7 The a contact 11 which gives an operation signal to the elevator control microcomputer 9 is used.

  For this reason, the brake release with high reliability can be detected without depending on microcomputer software or the like. In carrying out the present invention, the present invention is not limited to these configurations. When the rescue operation is performed at the time of a power failure by the program stored in the elevator control microcomputer 9, the rescue operation is performed at the time of a power failure. It may be distinguished from the case where there is no car, and the car may be operated using different car position information.

  According to the present embodiment, it is possible to reduce the time required to restart the elevator when recovering from a power failure. In other words, the rescue operation is performed during a power failure and the rescue operation is not performed during a power failure. If the rescue operation is not performed during a power failure, the absolute position of the car in the electronic safety microcomputer is used. Therefore, it is possible to shorten the time required for restarting the elevator as a whole. Thus, the elevator service can be further improved.

  In addition, this invention is not limited to the Example mentioned above, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of the embodiment can be replaced with the configuration of another embodiment.

  1 backup power supply at power failure, 2 power failure detection device, 3 relay coil, 4 b contact, 5 brake release detection device, 6 storage device, 7 set coil, 8 switch, 9 elevator control microcomputer, 10 reset coil, 11 a contact

Claims (3)

A car position calculation device that calculates the absolute position of the car based on a position detection signal indicating a car detection position that moves up and down the elevator hoistway and an encoder signal that includes the travel speed and travel position of the car;
An elevator operation control device for controlling the operation of the elevator;
A power failure detection device that detects a power failure of a power source that supplies power to the car position calculation device;
A brake release detection device for detecting the presence or absence of manual brake release operation,
A storage device that stores a detection result of the brake release detection device when a power failure is detected by the power failure detection device;
The elevator operation control device is:
When the information stored in the storage device is referred to when the power supply is restored and information indicating the execution of the manual brake releasing operation cannot be obtained, the car is calculated based on the absolute position of the car calculated by the car position calculating device. An elevator system characterized by controlling the operation of the vehicle. The elevator system according to claim 1,
The elevator operation control device is:
As a result of reference to the storage device, the rescue operation is not performed at the time of the power failure of the power supply on condition that the brake release detection device has obtained information indicating that the manual brake release operation has not been detected. The elevator system is characterized in that, based on the determination result, the absolute position of the car calculated by the car position calculating device is validated and the car is operated on the nearest floor. The elevator system according to claim 1 or 2,
The brake release detection device is
Inserted in the power supply circuit connecting the backup power source and the ground at the time of a power failure, and configured by a switch that closes the power supply circuit when the manual brake release operation is performed,
The power failure detection device is
A coil that is demagnetized during a power failure of the power source;
A power failure detection contact that is inserted into the power supply circuit and closes the power supply circuit when the coil is demagnetized;
The storage device
A set coil that is inserted into the power supply circuit in series with the switch and the power failure detection contact, and is excited on condition that the switch and the power failure detection contact each close the power supply circuit,
Inserted in a power supply circuit connecting the power supply of the elevator operation control device and the elevator operation control device, closes the power supply circuit when the set coil is excited, and outputs an operation signal to the elevator operation control device Set coil contacts;
Connected to the power source of the elevator operation control device, excited in response to a reset signal output from the elevator operation control device in response to the operation signal, and commands the car position calculation device to reset the calculated value An elevator system comprising a reset coil.

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