JP2005280895A - Elevator, and its operation control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator and its control method allowing an elevator car to travel quickly to a call-registered floor by making invalid the destination floor registrations which are generated owing to misoperation or a mischief. <P>SOLUTION: The elevator and its control method is embodied on the fact that existence or none of any passengers in the car 4 can be discriminated from a signal emitted from a load sensor 41 of the car 4, and includes a comparison discrimination means (comparison discriminator 8) which passes judgement upon comparing the level of the sensing signal given by the load sensor 41 with a threshold set previously in a threshold setting device 9 and feeds the result from discrimination to a controlling means (control circuit 12). The control means decides whether the destination floor registration should be taken up on the basis of the signal to indicate whether passenger exists in the car 4, and therefore, it can make invalid the destination floor registration in the condition with no passenger in the car and allows the car to travel directly to the call-registered floor, which enables enhancement of the service to the users. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an elevator that drives a main rope with an electric motor of a hoist to move a car up and down, and an improvement in an elevator operation control method.

  In the elevator, a car suspended from the main rope is driven by an electric motor in response to a call registration from each landing floor, and passengers who are put in the car by opening the landing door are registered in the car. It is configured to transport toward the destination floor (target floor).

  For passenger safety, a load detector is provided under the car to prevent passengers from entering the car beyond a preset load capacity.

  Therefore, the elevator control panel is controlled based on the detection signal from the load detector so that the elevator does not operate with a passenger number exceeding the specified load capacity.

  In many elevators that employ a three-phase induction motor as a hoisting machine, inverter control is incorporated into the control panel and set in advance in order to efficiently drive a comfortable ride without causing vertical vibration or the like. Speed control is performed so that the vehicle travels smoothly along the acceleration pattern (see, for example, Patent Document 1).

  FIG. 5 is a schematic configuration diagram of a conventional elevator.

  That is, an elevator control panel 1 is installed in the machine room, and an inverter circuit 11 that drives and controls the hoisting machine 2 and a control circuit 12 that controls the inverter circuit 11 are incorporated in the control panel 1.

  The hoisting machine 2 includes an electric motor 21 composed of a three-phase induction motor, a reduction gear 22 connected to the electric motor 21, and a driving sheave 23 connected to the reduction gear 22. A suspension car 4 is suspended from one end of the main rope 3 that is wound, and a counterweight 6 is suspended from the other end of the main rope 3 via a deflector 5.

  Between the car room of the car 4 and the car frame, there is installed a load detector 41 composed of anti-vibration rubber or the like for detecting the car load, and the detection signal from the load detector 41 is a control panel. 1 control circuit 12.

  The control circuit 12 is equipped with a calculation means by a microcomputer, receives a detection signal from the load detector 41, and controls so as to prevent a passenger having a load exceeding a specified amount from entering. For example, when the passenger is full . Control is also performed so as to perform a so-called full-passage operation that goes straight to the registered destination floor (target floor) without responding to the call registration from the call registration buttons 71, 72,... It is.

  The inverter circuit 11 controlled by the control circuit 12 employs a high-speed switching element such as an IGBT (Insulated Gate Bipolar Transistor), for example, and is controlled so that the car 4 travels along a predetermined acceleration pattern.

  Although not shown in FIG. 5 in order to control the motor 21 by the control circuit 12, a speed detector that detects the rotation speed of the motor 21 and a current detector that detects the drive current of the motor 21 are provided. Based on detection signals from the speed detector and the current detector, operation control is performed so that the car 4 travels along a predetermined acceleration pattern regardless of load fluctuations.

Although not shown in FIG. 5, in the elevator, the elevator 4 is used to correct the load imbalance of the electric motor 21 depending on the height positions of the car 4 and the suspension weight 6 connected to the main rope 3. A balancing rope is connected between the car 4 and the counterweight 6.
JP 10-338427 A

  In the elevator, when the destination floor is registered by the passenger operating the in-car operation panel, the elevator control panel that receives the signal from the in-car operation panel travels toward the registered destination floor and opens the landing door. The navigation is controlled to do.

  At that time, for example, even if one passenger in the car accidentally registers other floor as the destination floor other than the destination floor, the control circuit side determines which of the destination floors is erroneously registered. Since there is no means, the elevator control panel runs the car toward the registered destination floors in order, and performs landing door opening control.

  Therefore, for example, even after the last passenger gets out of the car, the destination floor may still be registered due to an erroneous operation.

  If the registration of the destination floor due to misoperation remains after the last passenger gets out of the car, the elevator control panel will run the car toward the registered destination floor and leave the landing. Since the door is opened, the arrival to the call registration floor is delayed, and the service for the user is reduced.

  This is the same even when the destination floor registration is performed by mischief and the car remains even after it has been emptied, and there is a demand for what to do.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an elevator and an elevator operation control method capable of avoiding useless landing door opening for destination floor registration due to erroneous operation or mischief and enabling proper and smooth operation. .

  The present invention relates to an elevator that controls the operation of an elevator based on a destination floor registration signal from an in-car operation panel and a rotation detection signal of the motor, a rotation detection unit that detects the rotation of the motor, and a signal from the rotation detection unit And determining the presence / absence of passengers in the car by comparing with a preset threshold, and controlling the elevator by determining whether or not to register the destination floor based on the determination result from the comparison determination means And a control means.

  Next, the present invention relates to a current detection means for detecting the drive current in an elevator that controls the operation of the elevator based on a destination floor registration signal from the operation panel in the car and a detection signal of the drive current supplied to the motor. A signal from the current detection means is introduced and compared with a preset threshold value to determine the presence or absence of passengers in the car, and based on the determination result from the comparison determination means, whether the destination floor registration is accepted or not is determined. And control means for determining and controlling the elevator.

  Next, in the elevator operation control method for controlling the elevator based on the destination floor registration signal and the motor rotation detection signal from the operation panel in the car, the present invention determines the presence or absence of passengers in the car based on the rotation detection signal, The elevator is controlled by determining whether or not to register the destination floor based on the determination result.

  Next, the present invention relates to an elevator operation control method for controlling the operation of an elevator based on a destination floor registration signal from an in-car operation panel and a drive current detection signal supplied to an electric motor. The presence or absence of an internal passenger is determined, and based on the determination result, the adoption of the destination floor registration is determined and the elevator is controlled.

  The present invention focuses on the fact that it is possible to determine whether or not there are passengers in the car from the load detection signal of the car, the rotation detection signal of the motor rotation, or the current detection signal of the drive current supplied to the motor. It was made.

  First, a comparison / determination unit is provided. The comparison / determination unit compares the detection signal level from the load detector, rotation detector, or current detector with a preset threshold value, and determines whether there is a passenger in the car. Since the determination result is supplied to the control means, the elevator control panel determines whether or not to accept the destination floor registration based on the determination result, that is, cancels the destination floor registration when there is no passenger in the car ( Canceled), it is possible to quickly travel to the call registration floor of the car and improve the service for the passengers.

  Subsequently, the load detection signal of the car, or the rotation detection signal of the rotating motor, or the motor drive current detection signal is compared with a preset threshold value to determine whether there are passengers in the car, Based on the determination result, whether or not to use the operation control by the destination floor registration is determined, so that when there are no passengers, useless opening of the landing door to the registered destination floor can be omitted.

  Hereinafter, an elevator according to an embodiment of the present invention and an elevator operation control method according to an embodiment will be described in detail with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same structure as the conventional elevator shown in FIG. 5, and detailed description is abbreviate | omitted.

  In the elevator according to the present invention, whether a passenger is present in the car is determined by whether a car load detector, a rotation detector that detects the rotation of the drive motor, or a current detection that detects a drive current value supplied to the motor. This is made by paying attention to the fact that the detection signal from the vessel can be introduced for determination.

  The car load detector installed in the elevator car detects and derives the car load corresponding to the number of passengers in the car and the presence or absence of passengers in the car. Therefore, from the car load detection signal, it is compared with the car load when there is no passenger in the car and the car is empty if there are passengers exceeding the preset load capacity as in the past. By doing so, it can be determined whether or not there are passengers in the car.

  In the elevator, motor control is performed so that the traveling of the car follows and matches a preset acceleration pattern. However, in reality, a tracking error is unavoidable. The value of the following error also changes according to the load of the electric motor, that is, the car load. That is, the actual acceleration pattern changes according to the number of passengers in the car.

  Thus, since there is a difference in the rotation speed pattern of the electric motor between when the passenger is in the car and when there is no passenger, the rotation direction of the rotation detector composed of a pulse generator or the like connected to the electric motor is included. By comparing the rotation detection signal with a preset rotation speed pattern or the like, it can be determined whether or not there are passengers in the car.

  However, the rotation of the electric motor detected by the rotation detector may be any of the rotation angle, the number of rotations, and the rotation acceleration, as long as the correspondence with the set threshold value can be compared.

  In the elevator, program control is performed so that the car travels in accordance with the acceleration pattern by torque control and current control on the inverter circuit.

  The inverter circuit runs the car by current control according to the motor load, that is, the magnitude of the car load, so that it can be determined from the detection signal value from the current detector whether there are passengers in the car. .

  Therefore, the elevator and the elevator operation control method of the present invention were made by paying attention to the fact that the load of the car, the rotation of the motor, and the current of the drive current differ depending on the presence or absence of passengers in the car, Each detection signal such as load is compared with the threshold value set corresponding to each, and the presence / absence of passengers in the car is determined. Based on the determination result, whether or not to register the destination floor is determined. When there is a destination floor registration from the in-car operation panel even though there are no passengers in the car, the destination floor registration is canceled (cancelled), and the elevator can quickly respond to the hall call registration.

  Therefore, even if the destination floor registration due to an error or mischief operation remains in the empty car, the control panel controls the elevator without responding to it, eliminating waste and improving the service for customers Is possible.

  FIG. 1 is a block diagram of an elevator according to the first embodiment of the present invention. The elevator according to the first embodiment uses a detection signal from a car load detector to indicate whether there are passengers in the car. Judgment based on.

  In FIG. 1, a load detector 41, which is a car load detecting means, is installed between a car floor under the car 4 and a car frame.

  The signal from the car load detector 41 is supplied to a comparison / determination unit 8 which is a comparison / determination unit, and a threshold setting unit 9 is connected to the comparison / determination unit 8.

  The threshold setter 9 is constituted by a memory such as a ROM, and in this embodiment, a car load value obtained when there is no passenger in the car 4 is preset.

  Therefore, the comparison / determination unit 8 compares the detection signal from the car load detector 41 with the threshold signal read from the threshold setting unit 9 to determine whether there are passengers in the car 4 and the determination. The result is supplied to the control circuit 12 which is a control means.

  The control circuit 12 of the control panel 1 is constituted by a microcomputer or the like, and from an operation signal such as a destination floor registration signal from the in-car operation panel 42 in the car 4, or from the hall call registration buttons 71, 72,. The control panel 1 that has received these signals drives and controls the electric motor 21 including a three-phase induction motor via the inverter circuit 11 to control the operation of the elevator.

  Therefore, in the elevator according to the first embodiment, when the control circuit 12 receives a determination result from the comparison / determination unit 8 that there are no passengers in the car 4, the in-car operation in the car 4 is performed. If there is destination floor registration from the board 42, the destination floor registration signal is canceled, and in response to call registration signals from the call registration buttons 71, 72,. The car 4 is caused to travel toward and the operation is controlled so that the landing door is opened.

  The operation control method in the elevator according to the first embodiment will be further described with reference to the flowchart shown in FIG.

  As shown in FIG. 2, the control panel 1 that has activated the elevator first responds to the hall call registration, runs the car toward the call registration floor, and opens the landing door (step 2A).

  The car 4 carrying the passenger travels toward the destination floor based on the operation signal of the destination floor registration button on the passenger's in-car operation panel 42, and the door after the passenger gets out of the car due to the landing door opening. Close is confirmed (step 2B).

  In step 2B, after it is confirmed that the door is closed, the car load signal detected by the car load detector 41 is supplied to the comparison / determination unit 8 (step 2C).

  Since the signal from the threshold setting unit 9 in which the load value of the car when no passenger is present in the car 4 is set as the threshold value is supplied to the comparison / determination unit 8, the comparison / determination unit 8 Compared with the detection signal from the detector 41, it is determined whether or not there are passengers in the car, and the determination result is supplied to the control circuit 12 of the control panel 1 (step 2D).

  When the control circuit 12 receives the determination result from the comparison / determination unit 8 and receives the determination result that there are no passengers in the car (NO), the control panel 1 searches for the destination floor registration. When there is destination floor registration (YES), control is performed so as to cancel (cancel) the destination floor registration (step 2F).

  In the above description, when it is determined in step 2D that there are passengers in the car 4 (YES), there is no destination floor registration in step 2E (NO), and after step 2F, the elevator operation is continued. When continuing, both return to step 2A and continue normal operation control.

  As described above, according to the elevator of the first embodiment, whether to use the destination floor registration signal is determined based on the determination result of the presence or absence of passengers. Traveling in response to call registration from the floor can be performed smoothly and quickly.

  Therefore, even if the destination floor registration registered by the misoperation of the passenger or by the mischief operation still remains after the last passenger gets off the car, the useless landing door opening operation is not performed. It is possible to improve the elevator service.

  FIG. 3 is a block diagram showing a second embodiment of the elevator according to the present invention.

  In the first embodiment, the presence / absence of passengers in the car 1 and the detection signal from the car load detector 41 are used. In the second embodiment, whether there are passengers in the car 4 or not. However, it was made paying attention to the fact that there is a difference in the tracking error with the target acceleration pattern, and the threshold setting device is set in advance as the rotation speed corresponding to the speed pattern of the drive motor when there is no passenger 9 is determined, the presence or absence of passengers in the car 4 is determined by comparison with the rotational speed including the rotational direction actually detected by the rotation detector 21a, and the determination result is controlled by the control panel 1. Supply to circuit 12.

  Therefore, as in the first embodiment, the control circuit 12 of the control panel 1 indicates that the destination floor registration from the in-car operation panel 42 still remains even though the passenger is not in the car. By doing so, it is possible to promptly drive the car 4 to the landing floor where the call registration is performed without performing a response in response to the destination floor registration, thereby improving the service for the user.

  The operation control procedure for the elevator according to the second embodiment is substantially the same as the operation control procedure for the elevator in the first embodiment shown in FIG. 2, and the main difference from the first embodiment. The point is based on the signal from the car load detector 41 in step 2C in the first embodiment based on the signal from the car load detector 41. In this second embodiment, the point is based on the rotation signal from the rotation detector 21a. Therefore, in the first embodiment, in the subsequent step 2D, the comparison was made with the load value of the car set as the threshold value. However, in this second embodiment, the rotation speed of the motor set as the threshold value and The only difference is in the comparison and determination with the rotational speed and the like, and the other procedures are the same, and the detailed description is omitted.

  Therefore, as in the first embodiment, the destination floor registration that remains despite the absence of passengers in the car is canceled, and the car 4 is quickly responded to the call registration from the landing floor. You can drive without waste.

  FIG. 4 is a block diagram showing a third embodiment of the elevator according to the present invention.

  In the second embodiment, the presence / absence of passengers in the car 1 is used and the detection signal from the rotation detector 21a is used. In the third embodiment, whether there are passengers in the car 4 or not. The electric current supplied to the electric motor is focused on different values, and the electric motor supply current when there is no passenger is preset in the threshold setting device 9 as a threshold and is actually detected by the current detector 10. The presence or absence of passengers in the car 4 is determined by comparison with the current value, and the determination result is supplied to the control circuit 12 of the control panel 1.

  Therefore, as in the first and second embodiments, the control circuit 12 of the control panel 1 is still registered with the destination floor from the in-car operation panel 42 even though the passenger is not in the car. For example, since the registration is canceled as a registration due to an error operation or a mischief, the car 4 can be quickly moved to the landing floor where the call registration is performed, and the service for the user is improved. it can.

  The operation control procedure of the elevator according to the third embodiment is also substantially the same as the operation control procedure in the elevator according to the first embodiment shown in FIG. 2, and the main difference is the first operation. In the example, the load in the car is based on the signal from the car load detector 41 in step 2C. However, in the third embodiment, the point based on the detection signal from the current detector 10 is used. In the example, in the subsequent step 2D, a comparison determination is made with the car load value set as the threshold value. However, in the third embodiment, the comparison is made with the driving current value set as the threshold value. Since the other procedures are the same, detailed description is omitted.

  Therefore, in the third embodiment, as in the first and second embodiments, call registration from the landing floor is achieved by eliminating the remaining destination floor registration despite the absence of passengers in the car. The car 4 can be run without waste.

  In the third embodiment, for example, the detection signal for determining the presence / absence of a passenger in the car is a drive current value, and the presence / absence of a passenger in the car is determined based on the detection signal. In any of the embodiments, the signal detection timing is a timing at the time of so-called suspension that occurs when the brake is released from the state in which the brake is applied and the car 4 is stopped to start. Alternatively, it may be the timing while traveling along the acceleration pattern.

  Further, the elevators of the second and third embodiments described above are effective when the motor efficiency is not so high, the starting shock is small at the start of traveling, and it is not necessary to compensate the torque of the motor.

  As described above, according to the elevator and the elevator operation control method of the present invention, whether or not to register the destination floor is determined based on the determination result of the presence or absence of passengers in the car, so there are no passengers in the car. It is possible to quickly deal with customers who cancel registration at the time and perform call registration on the landing floor.

It is the block diagram which showed the 1st Example of the elevator which concerns on this invention. It is the flowchart which showed the control procedure of the elevator shown in FIG. It is the block diagram which showed the 2nd Example of the elevator which concerns on this invention. It is the block diagram which showed the 3rd Example of the elevator which concerns on this invention. It is a block diagram of the conventional elevator.

Explanation of symbols

1 Elevator control panel 11 Inverter circuit 12 Control circuit (control means)
2 Hoisting machine 21 (drive) Electric motor 21a Rotation detector (rotation detection means)
3 main rope 4 car 41 load detector (load detection means)
42 In-car operation panels 71, 72, ... hall call registration button 8 comparison judgment device (comparison judgment means)
9 Threshold setting device (threshold setting means)
10 Current detector (current detection means)

Claims (4)

In the elevator that controls the operation of the elevator based on the destination floor registration signal from the in-car operation panel and the rotation detection signal of the motor,
Rotation detection means for detecting rotation of the electric motor;
Comparison determination means that introduces a signal from this rotation detection means and determines the presence or absence of passengers in the car in comparison with a preset threshold value;
An elevator comprising: control means for controlling the elevator by determining whether or not the destination floor registration is accepted based on a determination result from the comparison determination means. In the elevator that controls the operation of the elevator based on the destination floor registration signal from the in-car operation panel and the detection signal of the drive current supplied to the motor,
Current detection means for detecting the drive current;
Comparison determination means for introducing a signal from the current detection means and determining the presence or absence of passengers in the car in comparison with a preset threshold value;
An elevator comprising: control means for determining whether or not the destination floor registration is accepted based on a determination result from the comparison determination means, and controlling operation of the elevator. In the elevator operation control method for controlling the elevator based on the destination floor registration signal and the motor rotation detection signal from the operation panel in the car,
An elevator operation control method comprising: determining whether passengers are present in a car based on the rotation detection signal; and determining whether to accept the destination floor registration based on the determination result to control the elevator. In the elevator operation control method for operating the elevator based on the destination floor registration signal from the in-car operation panel and the detection signal of the drive current supplied to the motor,
An elevator operation control method comprising: determining whether passengers are present in a car based on a detection signal of the drive current; and determining whether to accept the destination floor registration based on the determination result to control the elevator.

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