JP5645324B2 - Elevator control device - Google Patents

Description

  Embodiments described herein relate generally to an elevator control device that detects a rope shake accompanying a shaking of a building due to an earthquake, a strong wind, or the like and switches to a control operation.

  When a building is made taller, the natural frequency of the building decreases, so that resonance phenomenon is likely to occur during an earthquake or a strong wind. Here, if the natural frequency of the building matches the natural frequency of the elevator rope (main rope, governor rope, etc.) installed in the hoistway, the rope will shake greatly due to resonance, and the equipment in the hoistway and the elevator There is a risk of contact with the road wall and a so-called “confinement accident”.

  In order to prevent such an accident, recent elevators are equipped with a safety device called a “control operation device”. This means that when a building shakes, the rope swing associated with the building shake is detected, and if the amount of shake exceeds a preset threshold, the car is moved to the evacuation floor (non-resonant floor) to operate the service. Is a technology to pause.

JP 2008-285334 A JP 2008-74536 A JP 2007-131360 A

“Explanation of technical standards for elevators, 2009 edition, separate volume Elevator seismic design and construction guidelines, 2009 edition”, supervised by Ministry of Land, Infrastructure, Transport and Tourism Housing Bureau, Building Guidance Division, Japan Building Equipment and Elevator Center, Japan Elevator Association, 2009, p. 147-166

  In the above-described control operation, the car is moved to the nearest floor, the door is opened for a certain period of time and the passenger gets off, and then the door is closed and moved to a position where the rope does not resonate, that is, a retreat floor (non-resonant floor). The reason why the car is stopped at the nearest floor in front of the evacuation floor and the passengers are lowered is because it is dangerous if the passengers remain on the board when the rope swing grows while moving to the evacuation floor.

  However, even if the car is temporarily stopped at the nearest floor, if it takes time to get off the passengers, there is a high possibility that the swing of the rope will grow during that time. In this case, in order to evacuate from the nearest floor as soon as possible, the door opening time may be shortened. However, if the door opening time is shortened, it becomes difficult for all passengers to get off within that time when a large number of passengers are on board.

  On the other hand, with the recent increase in the number of buildings, the structure of buildings tends to shake. For this reason, when the building is shaken by wind or the like, the control operation by the rope swing is frequently activated, and there is a problem that the normal operation service is hindered.

  The problem to be solved by the present invention is to optimize the operation timing of the control operation by rope swing and the door opening time after the control operation to ensure the safety of the passengers and prevent the decrease in the operation service as much as possible. It is to provide a control device.

  The elevator control device according to the present embodiment includes an elevator control device including a car that moves up and down via a rope installed in a hoistway of the building, and a building shake detection unit that detects the shake of the building. Detecting the amount of swing of the rope based on the amount of shaking of the building and the position of the car detected by the building shaking detecting means, and detecting the number of passengers in the car When a threshold value for rope runout is set based on the number of passengers detection means and the number of passengers detected by the passenger count detection means, and the amount of rope runout estimated by the rope shake estimation means exceeds the threshold value Control operation invoking means for initiating control operation in the vehicle, and when the control operation is activated by the control operation invocation means, the above-mentioned car was stopped at the nearest floor A door control time for the control operation based on the number of passengers detected by the operation control means for retreating from the nearest floor to a retreat floor with less rope swing, and the car Comprises door opening / closing control means for controlling the door opening according to the door opening time when the vehicle stops at the nearest floor.

FIG. 1 is a diagram illustrating a configuration of an elevator according to the first embodiment. FIG. 2 is a block diagram showing a functional configuration of the elevator control device according to the embodiment. FIG. 3 is a diagram showing the relationship between the main rope runout (maximum displacement) on the elevator car side and the car position in the same embodiment. FIG. 4 is a view showing the relationship between the swing (maximum displacement) of the main rope on the counterweight side of the elevator and the car position in the same embodiment. FIG. 5 is a diagram showing the relationship between the deflection (maximum displacement) of the elevator rope and the car position on the elevator car side in the same embodiment. FIG. 6 is a diagram showing the relationship between the deflection (maximum displacement) of the compensation rope on the counterweight side of the elevator and the car position in the same embodiment. FIG. 7 is a flowchart showing the processing operation of the elevator control apparatus according to the embodiment. FIG. 8 is a flowchart showing the processing operation of the elevator control apparatus according to the second embodiment. FIG. 9 is a diagram showing a waveform of an elevator building shake in the same embodiment. FIG. 10 is a flowchart showing the processing operation of the elevator control apparatus according to the third embodiment. FIG. 11 is a flowchart showing the processing operation of the elevator control apparatus according to the fourth embodiment.

  Hereinafter, embodiments will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram illustrating a configuration of an elevator according to the first embodiment. Assume that one elevator 11 is installed in a building 10.

  As shown in FIG. 1, a hoisting machine 12 that is a drive source of the elevator 11 is installed in the uppermost machine room 10 a of the building 10. In the machine roomless type elevator, the hoisting machine 12 is installed in the upper part of the hoistway 10b.

  A main rope 13 is wound around the hoisting machine 12. A car 14 is attached to one end of the main rope 13 and a counterweight 15 is attached to the other end. A compensatory 16 is disposed at the bottom of the hoistway 10b. The end portions of the compensation rope 17 are attached to the lower portions of the car 14 and the counterweight 15 via the compensation sheave 16.

  Further, a car control device 18 is provided above the car 14, and controls the opening and closing of the car door 19 when the car 14 is landed on any one of the landings 21a, 21b, 21c. The car control device 18 is connected to a control device 22 (to be described later) through a transmission cable 20 called a tail cord.

  A load sensor 24 is provided below the car 14, and the number of passengers can be estimated by detecting the load of the car 14. The load signal detected by the load sensor 24 is transmitted to the control device 22 described later via the car control device 18.

  On the other hand, in the machine room 10a or the machine room-less type of the building 10, a control device 22 for controlling the operation of the elevator 11 is installed in the hoistway 10b. The control device 22 includes a computer equipped with a CPU, ROM, RAM, and the like, and executes a series of processes relating to operation control of the elevator 11 such as drive control of the hoisting machine 12. In addition, when the building 10 is shaken by an earthquake or strong wind, the control device 22 estimates the rope swing associated with the shaking of the building 10 and controls the door opening / closing of the car 14 based on the estimation result. And a function of performing a retreat operation for moving the car 14 to the floor where the swing of the rope is attenuated.

  The “rope swing” means that the rope swings in the horizontal direction when the building 10 swings. In addition, the “rope” referred to here is a rope related to the raising / lowering operation of the car 14, and includes a compen- sion rope 17 in addition to the main rope 13 in the example of FIG. 1.

  Here, an acceleration sensor 23 for detecting the shaking of the building 10 due to an earthquake or a strong wind is installed near the top of the building 10. The acceleration sensor 23 is a biaxial acceleration sensor that can detect the acceleration in the horizontal direction (x direction and y direction) of the building, and outputs a detection signal to the control device 22.

  FIG. 2 is a block diagram illustrating a functional configuration of the elevator control device 22 according to the first embodiment.

  As shown in FIG. 2, the control device 22 includes a rope shake estimation unit 31, an operation control unit 32, and a notification unit 33.

  The rope shake estimation unit 31 estimates the rope shake amount based on the shaking amount of the building 10 and the position of the car 14 detected by the acceleration sensor 23. The car position can be detected from a pulse signal output in synchronization with the rotation of the hoisting machine 12 from a pulse generator (not shown) attached to the rotating shaft of the hoisting machine 12. The runout amount of the rope can be obtained by calculation using a predetermined function formula. In addition, since the specific calculation method is well-known, the detailed description shall be abbreviate | omitted here.

  The operation control unit 32 controls the operation of the car 14, stops the car 14 at the nearest floor during the control operation, and performs a retreat operation to a floor (non-resonant floor) with less rope swing. In the present embodiment, the operation control unit 32 includes a passenger number detection unit 32a, a management operation activation unit 32b, and a door opening / closing control unit 32c.

  The passenger number detection unit 32 a detects the number of passengers in the car 14. Specifically, the number of passengers is detected from the load value detected by the load sensor 24 using the load sensor 24 installed at the bottom of the car 14.

  The method for detecting the number of passengers is not limited to the method using the load sensor 24. For example, there is a method for determining the number of passengers from the video of the surveillance camera in the car 14. Moreover, if it is an elevator provided with the landing destination floor registration apparatus which can register a destination floor at a landing, the present passenger number can be calculated | required correctly from the information of the destination floor registered for every user.

  The management operation initiating unit 32b determines whether to perform the control operation based on the amount of rope swing estimated by the rope swing estimation unit 31. Specifically, the management operation invoking unit 32b sets a threshold for rope runout (hereinafter referred to as runout detection threshold R), and the rope runout estimated by the rope runout estimation unit 31 exceeds the runout detection threshold R. Activate control operation. When the control operation is activated by the management operation activating unit 32b, the operation control unit 32 stops the car 14 at the nearest floor and then moves from the nearest floor to a retreat floor (non-resonant floor) with less rope swing. Evacuate.

  The door opening / closing control part 32c transmits to the car control part 18 and controls the door opening / closing of the car door 19 when the car 14 reaches any one of the landings 21a, 21b, 21c. Further, the door opening / closing control unit 32c sets a door opening time during control operation (hereinafter referred to as a control door opening time T) based on the number of passengers detected by the passenger number detecting unit 32a. Opens at the control door opening time T when the vehicle stops at the nearest floor.

  The notification unit 33 notifies the passengers in the car 14 of the door closing when the control door opening time T set by the door opening / closing control unit 32c has elapsed. Specifically, the notification method is a buzzer sound or a voice announcement. In addition, you may alert | report using both a buzzer sound and an audio | voice announcement. In the present embodiment, a case where notification is made by a buzzer sound will be described as an example.

  In the car 14, in addition to a destination floor button 41 corresponding to each floor, a door opening button 42a, a door closing button 42b, a buzzer 43, and the like are provided. When the destination floor of the passenger is designated by operating the destination floor button 41, the designated destination floor is sent to the control device 22 as a car call. When receiving the car call, the control device 22 moves the car 14 to the floor designated by the user.

  The door opening button 42a is an operation button for the passenger to instruct to open the door, and the door closing button 42b is an operation button for the passenger to instruct to close the door. Further, the buzzer 43 is sounded by a drive signal from the notification unit 33 when the car 14 stops at each floor.

  In addition, hall call buttons (not shown) are provided at the halls 21a, 21b, 21c. When a hall call (destination direction) is registered by operating the hall call button, the hall call is sent to the control device 22. When receiving the hall call, the control device 22 moves the car 14 to the floor where the hall call is registered.

  Here, the relationship between the rope runout and the car position will be described.

  “Rope” refers to the main rope 13 and the compen- sion rope 17. Specifically, the main rope 13 is divided into a main rope 13a attached to the car 14 side and a main rope 13b attached to the counterweight 15 side. The compensation rope 17 is divided into a compensation rope 17a attached to the car 14 side and a compensation rope 17b attached to the counterweight 15 side.

  The lengths of these ropes 13a, 13b, 17a, 17b vary depending on the position of the car 14. For example, focusing on the main rope 13, when the car 14 is on the lowest floor, the main rope 13a on the car 14 side is the longest, and conversely, the main rope 13b on the counterweight 15 side is the shortest.

  The rope shake estimation unit 31 provided in the control device 22 analyzes the relationship between the rope shake and the car position with respect to the building shake using a predetermined function formula with these ropes 13a, 13b, 17a, and 17b being monitored. .

  Here, FIG. 3 to FIG. 6 show examples of the results of analyzing the relationship between the rope swing and the car position for the ropes 13a, 13b, 17a, and 17b.

  FIG. 3 is a diagram showing the relationship between the deflection (maximum displacement) of the main rope 13a on the car 14 side and the car position. FIG. 4 is a diagram showing the relationship between the deflection (maximum displacement) of the main rope 13b on the counterweight 15 side and the car position.

  The main rope 13a on the side of the car 14 has a characteristic that the car 14 swings most in the vicinity of the lowest floor. On the other hand, the main rope 13b on the counterweight 15 side has a characteristic that the car 14 swings most near the top floor.

  FIG. 5 is a diagram showing the relationship between the deflection (maximum displacement) of the compen- sion rope 17a on the car 14 side and the car position. FIG. 6 is a diagram showing the relationship between the deflection (maximum displacement) of the compen- sion rope 17b on the counterweight 15 side and the car position.

  The compen- sion rope 17a on the side of the car 14 has a characteristic that the car 14 swings most greatly on the floor slightly above the central floor. On the other hand, the compen- sion rope 17b on the counterweight 15 side has a characteristic that the car 14 swings most greatly on the floor slightly below the center floor.

  3 to 6 show an example in which the building 10 has a certain amount of shaking, and the amount of shaking of the ropes 13a, 13b, 17a, and 17b is proportional as the amount of shaking of the building 10 increases. And get bigger. Moreover, the relationship between the swing of the rope and the position of the car differs depending on the characteristics of the building 10 and the characteristics of the elevator 11, and a specific method for obtaining the swing amounts of the ropes 13a, 13b, 17a, 17b from the swing amount of the building 10 is known. Therefore, detailed description thereof will be omitted.

  Next, the operation of the first embodiment will be described.

  FIG. 3 is a flowchart showing the processing operation of the elevator control device 22 according to the first embodiment.

  During normal operation, a load signal corresponding to the loading in the car 14 is input from the load sensor 24 to the operation control unit 32 via the car control unit 18. The passenger number detection unit 32a of the operation control unit 32 detects the number of passengers in the car 14 based on the load signal. For example, when the average weight of one passenger is 60 kg, if the load value detected by the load sensor 24 is 300 kg, the number of heavy passengers can be determined to be about five.

  The passenger number detection unit 32a determines whether or not the number of passengers in the car 14 is equal to or greater than the predetermined number P, and notifies the management operation activation unit 32b and the door opening / closing control unit 32c of the result (step S101). The predetermined number P is set in advance according to the rated number of passenger cars 14 as a standard for setting the door opening time during control operation.

  If the number of passengers is equal to or greater than the predetermined number P (Yes in Step S101), the management driving operation unit 32b sets r1 to the shake detection threshold value R (Step S102). Further, the door opening / closing control unit 32c sets t1 to the control door opening time T (step S103). On the other hand, if the number of passengers is less than the predetermined number of persons P (No in step S101), the management driving operation unit 32b sets r2 to the shake detection threshold R (step S104). Moreover, the door opening / closing control part 32c sets t2 to the control door opening time T (step S105).

  Note that r1 is set lower than the normal threshold, and r2 is set higher than the normal threshold (r1 <r2). t1 is set longer than the normal door opening time, and t2 is set shorter than the normal door opening time (t1> t2).

  That is, when the number of passengers is large (when the number of passengers is greater than or equal to the predetermined number P), it takes time to get off all the passengers on the nearest floor. However, if the door opening time on the nearest floor is long, the rope swing may increase during that time and may be caught by equipment in the hoistway. Therefore, the control door opening time T is set according to the time required for getting off from the number of passengers, and the threshold value is set so that the rope does not touch the device during the door opening. That is, the shake detection threshold R = r1 and the control door opening time T = t1 are set. As a result, the switching of the control operation for the rope runout is accelerated, and the door opening time on the nearest floor is secured.

  However, if the control operation is switched immediately when the rope swings, normal operation services will be hindered. Therefore, when the number of passengers is small (less than the predetermined number P), the normal operation is continued as much as possible by setting the shake detection threshold R = r2 and the control door opening time T = t2. During control operation, the door is closed early on the nearest floor.

  The control door opening time T and the shake detection threshold value R may be set stepwise according to the number of passengers. For example, the time required for one passenger to get off is calculated from actual measurements. Assuming that the time obtained by multiplying the time by the number of passengers is tx, tx + α is set as the control door opening time T with tx or a slight margin. Α is a margin, for example, about 10% of tx.

  When the control door opening time T (tx + α) is short, the swing detection threshold value R can be set higher to delay the control operation because it can be retreated early after the nearest floor stop of the car 14. Conversely, when the control door opening time T (tx + α) is long, the runout detection threshold R needs to be set low so as not to catch the rope while the control door is open, and it is necessary to switch to control operation early. .

  When the building 10 shakes due to an earthquake or a strong wind, an acceleration signal corresponding to the amount of shaking of the building 10 is output to the control device 22 from the acceleration sensor 23 installed in the machine room 10a. When the swing of the building 10 is detected, the rope swing estimation unit 31 provided in the control device 22 estimates the swing amount of the rope based on the swing amount of the building 10 obtained from the acceleration signal and the current car position. . Specifically, for each of the ropes 13a, 13b, 17a, and 17b, the rope swing amount with respect to the swing amount of the building 10 is obtained using a predetermined function formula.

  The amount of rope deflection estimated by the rope deflection estimation unit 31 is given to the operation control unit 32. Here, if the amount of shake of the rope exceeds the shake detection threshold R set in step S102 or S104 (Yes in step S106), the management operation is activated from the management operation activation unit 32b. Thus, the operation control unit 32 switches from normal operation to control operation, and moves the car 14 to the nearest floor and stops it (step S107).

  As described above, the shake detection threshold R is set according to the number of passengers. If the number of passengers is equal to or greater than the predetermined number P, the shake detection threshold value R is set to a low value (R = r1), so if the rope swings more than a predetermined amount, the control operation is switched to early.

  When the car 14 stops at the nearest floor by the control operation (step S105), the door opening / closing control unit 32c controls the door opening of the car 14 based on the control door opening time T set according to the number of passengers. (Step S108). In this case, if the number of passengers is equal to or greater than the predetermined number P, the control door opening time T can be made longer than usual, and many passengers can get off during that time.

  At this time, the operation control unit 32 sounds the buzzer 43 in the car 14 through the notification unit 33 to prompt the passenger to get off (step S109). In addition to the ringing of the buzzer 43, for example, a message such as "Temporarily stop the elevator due to strong wind. Please get off at this floor because you cannot get on." You may announce by voice.

  When the control door opening time T elapses, the operation control unit 32 closes the car 14 and performs a retreat operation to the retreat floor (step S108). The “evacuation floor” is a non-resonant floor. As shown in FIGS. 3 to 6, the swing of the rope varies depending on the position of the car 14.

  For example, in the case of the main rope 13a on the car 14 side, the car 14 has the characteristic that it swings the most in the vicinity of the lowest floor. Therefore, for the main rope 13a, the vicinity of the lowest floor is the resonance floor. The main rope 13b on the counterweight 15 side has a characteristic that the car 14 swings most greatly near the top floor. Therefore, for the main rope 13b, the vicinity of the top floor is the resonance floor.

  The same applies to the compen- sion rope 17a attached to the car 14 side and the compen- sion rope 17b attached to the counterweight 15 side, and each has a resonance floor that swings greatly depending on the position of the car 14.

  The non-resonant floor is obtained from the result of comprehensive analysis of the swing characteristics of these ropes 13a, 13b, 17a, 17b. In general, the ropes 13a, 13b, 17a, and 17b have little swing near the center of the building 10, so that the floor near the center is a non-resonant floor, and a safe evacuation floor even if the car 14 is stagnant. Is set as one of the following.

  By moving the car 14 to the retreat floor as soon as possible, an increase in rope runout can be prevented. After the car 14 moves to the retreat floor, the operation of the car 14 is stopped. In this case, the operation is suspended on the retreat floor with the door open. As a result, even if passengers who did not get off at the nearest floor remain in the car 14, there is no worry of being trapped.

  On the other hand, when the amount of rope deflection is less than the threshold value R (No in step S106), the operation control unit 32 continues normal operation (step S111). The normal driving means that the car 14 provides driving service for each floor in accordance with registration of a call (a hall call / car call).

  As described above, according to the first embodiment, by optimizing the timing of the control operation and the door opening time during the control operation according to the number of passengers, the safety of the passenger is ensured when the rope swings greatly. However, it is possible to continue the normal operation as much as possible to prevent a decrease in driving service.

(Second Embodiment)
Next, a second embodiment will be described.

  In the said 1st Embodiment, it was set as the structure which controls the door opening time when the nearest floor stop of the cage | basket | car 14 is controlled so that a rope runout may not increase at the time of control operation. On the other hand, in the second embodiment, the door closing time is controlled when the car 14 is stopped at an arbitrary floor before the control operation, that is, during the normal operation.

  The basic configuration of the control device 22 is the same as that of the first embodiment. However, in the second embodiment, it is assumed that the door opening / closing control unit 32c of the operation control unit 32 has a function of promoting the door closing of the car 14 according to the amount of rope swing during normal operation. .

  FIG. 4 is a flowchart showing the processing operation of the elevator control device 22 in the second embodiment.

  During normal operation before the control operation is activated, when the car 14 stops at a landing on an arbitrary floor (step S201), the operation control unit 32 determines the current amount of rope deflection estimated by the rope deflection estimation unit 31. And the amount LT of the building input from the acceleration sensor 23, a time LT until the amount of rope swing until the currently set shake detection threshold R is predicted (step S202).

  The door opening / closing control unit 32c of the operation control unit 32 counts the time ST when the car 14 is stopped at the landing. When the stop time ST is equal to or longer than “LT-β” (Yes in Step S203), the door opening / closing control unit 32c promotes the door closing of the car 14 and moves before the control operation is activated. (Step S204).

  β is calculated from the time required to close the door and the time required to move the car 14, and is set so as not to activate the control operation.

  As a method for promoting door closing, a method for notifying the fact that the door closing is necessary by activating the notification unit 33 by voice through the speaker 43 in the car 14, or immediately when the door opening button 42a is not pressed is used. There is a method of starting the door closing operation.

  Here, a method of predicting the time LT until the amount of rope shake reaches the shake detection threshold R will be described.

  Usually, the amount of rope runout is calculated by analyzing the time history from the current car position and the current building shaking magnitude. In the case of a building shake due to a strong wind, the amount of change in the magnitude of the shake in the unit of the building shake period is generally small. Therefore, it is possible to assume the magnitude of the building shake from the present to several cycles before the current period.

This is shown in FIG.
In the case of strong winds or long-period earthquakes, the building shakes with a sine wave as shown in FIG. 9 at the primary natural period (T2). The solid sine wave in the figure is the actual value of the building shake detected by the acceleration sensor 23, and the broken line is the assumed value of the building shake.

  First, a value (A2) obtained by averaging the peak values of the amplitude of the sine wave of the building shake obtained as an actual measurement value from the present to several cycles before is obtained. A state is assumed in which the building shake equivalent to a sine wave continues for several cycles with the amplitude average value A2 and the cycle T2. It is possible to estimate the magnitude of the building shake until several cycles later and the rope runout after several cycles from the car position at the time of stopping. The time LT from the estimated value of the rope shake to the shake detection threshold R can be calculated.

  As described above, according to the second embodiment, by estimating the time until the control operation is activated from the current rope deflection amount, the door shake is promoted before the rope operation increases and the control operation is activated. It can be performed. As a result, it is possible to prevent the situation where the control operation is frequently activated when the rope swings as much as possible, and to continue the operation service as long as possible.

  Note that the technique described in the second embodiment is effective by itself, but the effect can be further improved by combining with the technique of the first embodiment.

(Third embodiment)
Next, a third embodiment will be described.

  In the first embodiment, when the rope runout amount exceeds the runout detection threshold R, the control operation is immediately switched to the control operation. However, since the rope runout depends on the position of the car 14 and the magnitude of the building shake, the rope runout does not necessarily increase as it is. In the third embodiment, the control operation is controlled in consideration of the traveling direction of the car 14 and the magnitude of the building shake from such a viewpoint.

  The basic configuration of the control device 22 is the same as that of the first embodiment. However, in the third embodiment, the operation control unit 32 indicates that the travel direction of the car 14 and the building shake are not detected when the amount of rope swing estimated by the rope swing estimation unit 31 exceeds the swing detection threshold R. It is assumed that a function for carrying out control operation based on the size is provided.

  FIG. 10 is a flowchart showing the processing operation of the elevator control device 22 according to the third embodiment. Note that the processing from step S301 to S306 is the same as the processing from step S101 to S106 in FIG. 7 in the first embodiment.

  In other words, during normal operation, a load signal corresponding to the loading in the car 14 is input from the load sensor 24 to the operation control unit 32 via the car control unit 18. The passenger number detection unit 32a of the operation control unit 32 detects the number of passengers in the car 14 based on the load signal, and determines whether or not the number is equal to or greater than the predetermined number P (step S301).

  If the number of passengers is equal to or greater than the predetermined number P (Yes in step S301), r1 is set to the shake detection threshold R by the management operation activation unit 32b (step S302), and the control door opening time T is t1 by the door opening / closing control unit 32c. Is set (step S303).

  On the other hand, if the number of passengers is less than the predetermined number P (No in step S301), r2 is set to the shake detection threshold R by the management operation activation unit 32b (step S304), and the control door opening time T is set by the door opening / closing control unit 32c. T2 is set to (step S305). r1 <r2 and t1> t2.

  The amount of rope deflection estimated by the rope deflection estimation unit 31 is given to the operation control unit 32. Here, when the amount of rope shake exceeds the shake detection threshold R set in step S302 or S304 (Yes in step S306), the operation control unit 32 determines the travel direction of the car 14, the retreat floor, From the positional relationship, it is determined whether or not the car 14 is traveling in the direction of rope attenuation (step S307).

  The “evacuation floor” is a non-resonant floor. As described with reference to FIGS. 3 to 6, the runout of the rope varies depending on the position of the car 14. When the types of ropes are divided into a main rope 13a on the car 14 side, a main rope 13b on the counterweight 15 side, a compen- sion rope 17a on the car 14 side, and a compen- sion rope 17b on the counterweight 15 side, It is obtained from the result of comprehensive analysis of the swing characteristics of these ropes 13a, 13b, 17a, 17b. If the car 14 is traveling toward the retreat floor, it is determined that the car 14 is traveling in the attenuation direction.

  When the car 14 is traveling in the rope attenuation direction (Yes in step S307), the operation control unit 32 next determines whether the building is shaken (step S308). As a result of the determination, if the current amount of building shaking and the average value of building shaking from the present to several cycles later are equal to or less than the predetermined value A3 (Yes in step S308), the operation control unit 32 does not perform the control operation. Normal operation is continued (step S313).

  The current building shaking amount is obtained by the acceleration sensor 23. As described with reference to FIG. 8, the average value of the building shake until several cycles later is obtained from the value A2 obtained by averaging the peak values of the amplitude of the sine wave of the building shake obtained several times before the present and the cycle T2. be able to.

  Note that the building shake is judged here because, even if the car 14 is traveling in the direction of the rope attenuation, if the building shake is large, the risk of the rope coming into contact with the equipment in the hoistway during traveling. Because there is.

  If the building shake is not less than the predetermined value A3 (No in Step S308), the operation control unit 32 activates the control operation and stops the car 14 at the nearest floor (Step S309). The same applies to the case where the car 14 is not traveling in the rope attenuation direction (No in step S307), and the operation control unit 32 activates the control operation to stop the car 14 at the nearest floor (step S309). ).

The subsequent steps are the same as those in the first embodiment.
That is, when the car 14 stops at the nearest floor by the control operation, the opening of the car 14 is controlled based on the control door opening time T set according to the number of passengers (step S310). At this time, the operation control unit 32 sounds the buzzer 43 in the car 14 through the notification unit 33 to urge the passenger to get off (step S311), and closes the car 14 after the control door opening time T has elapsed and retreats. The evacuation operation is performed to the floor (step S312). If the amount of rope shake does not exceed the shake detection threshold R (No in step S306), the operation control unit 32 continues normal operation (step S313).

  As described above, according to the third embodiment, when the amount of rope shake exceeds the shake detection threshold value R, it is determined whether or not to perform the control operation from the traveling direction of the car 14 and the magnitude of the building shake. As a result, it is possible to prevent frequent operation of the control operation due to the rope runout, and to suppress a decrease in driving service.

  In addition, you may implement | achieve combining this 2nd Embodiment with this 3rd Embodiment.

(Fourth embodiment)
Next, a fourth embodiment will be described.

  In the first embodiment, the shake detection threshold R is set according to the number of passengers in the car 14, and the control operation is activated when the amount of rope shake exceeds the shake detection threshold R. However, if the control operation is delayed, the rope run-out increases while the nearest floor of the car 14 is stopped, and the rope may come into contact with equipment in the hoistway.

  Therefore, in the fourth embodiment, the state of rope runout when the car 14 is stopped at the nearest floor is predicted, and the runout detection threshold R is set so as to speed up control operation when there is a possibility of contact with equipment in the hoistway. Is reset.

  The basic configuration of the control device 22 is the same as that of the first embodiment. However, in the fourth embodiment, the operation control unit 32 assumes that the car 14 stops at the nearest floor before the control operation is activated, and the rope swings while the door is open at the nearest floor. A function is provided that determines the possibility that the amount will increase to a dangerous state, and resets the shake detection threshold R so that the control operation is activated early when there is a possibility that the amount will increase to a dangerous state.

  FIG. 11 is a flowchart showing the processing operation of the elevator control device 22 according to the fourth embodiment. Note that the processing from step S401 to S405 is the same as the processing from step S101 to S105 of FIG. 7 in the first embodiment.

  In other words, during normal operation, a load signal corresponding to the loading in the car 14 is input from the load sensor 24 to the operation control unit 32 via the car control unit 18. The passenger number detection unit 32a of the operation control unit 32 detects the number of passengers in the car 14 based on the load signal and determines whether or not the number is equal to or greater than the predetermined number P (step S401).

  If the number of passengers is equal to or greater than the predetermined number P (Yes in step S401), r1 is set to the shake detection threshold R by the management operation activation unit 32b (step S402), and the control door opening time T1 is t1 by the door opening / closing control unit 32c. Is set (step S403).

  On the other hand, if the number of passengers is less than the predetermined number P (No in step S401), r2 is set to the shake detection threshold value R by the management operation activation unit 32b (step S404), and the control door opening time T is set by the door opening / closing control unit 32c. Is set to t2 (step S405). r1 <r2 and t1> t2.

  Here, in the fourth embodiment, the operation control unit 32 determines the nearest floor that can be stopped in the shortest time when the control operation is activated from the current car position (step S406).

  Next, assuming that the car 14 is stopped at the nearest floor by the control operation, the operation control unit 32 obtains the amount of rope swing when stopped at the nearest floor, and the rope runout. A time LT2 until the amount exceeds the shake detection threshold R and contacts the device is predicted (step S407).

  Specifically, a change in the amount of swing of the rope is estimated based on the current amount of building shake or the average value of the amount of building shake several cycles before the present and the position of the nearest floor. Then, a time LT2 until the amount of rope shake at the position exceeds the shake detection threshold R set in step S402 or S404 is obtained.

  The operation control unit 32 compares the time LT2 with the control door opening time T set in step S403 or S405, and whether or not there is a possibility that the rope may contact the equipment in the hoistway during the door opening. Is determined (step S408). When there is a possibility that the rope may come into contact with the equipment in the hoistway, that is, when LT2 <T (Yes in step S408), the operation control unit 32 sets the current shake detection threshold R to the threshold r3. Reset is performed (step S409). r3 <r1 <r2, and r3 has the lowest threshold for rope runout. By resetting the shake detection threshold value R to the threshold value r3, the activation timing of the control operation is advanced.

  Thereafter, the amount of rope shake is determined using the shake detection threshold value R (r3) after the resetting, and the control operation is activated when the shake detection threshold value R (r3) is exceeded (step S410). If the shake detection threshold R is not reset, the state of the rope shake is determined using the initial shake detection threshold R (r1 or r2) as in the first embodiment.

  As in the first embodiment, when the car 14 stops at the nearest floor by the control operation, the opening of the car 14 is controlled based on the control door opening time T set according to the number of passengers. (Step S412). At this time, the operation control unit 32 sounds the buzzer 43 in the car 14 through the notification unit 33 to prompt the passenger to get off (step S413), and closes the car 14 after the control door opening time T elapses and retreats. Retreat operation is performed to the floor (step S414). If the amount of rope shake does not exceed the shake detection threshold R (No in step S410), the operation control unit 32 continues normal operation (step S415).

  As described above, according to the fourth embodiment, the state of the rope swing at the time when the nearest floor is stopped is predicted from the position of the nearest floor at the time of control operation activation and the current size of the building swing, and is raised and lowered while the door is open. If there is a possibility of contact with road equipment, reset the vibration detection threshold so that the control operation is activated as soon as possible to prevent rope contact when the control operation is actually activated. Can do.

  According to at least one of the embodiments described above, the control operation timing and the door opening time during the control operation when a rope shake occurs due to a long-period earthquake or a strong building caused by strong winds are optimized. It is possible to reduce the number of times of activation of the vehicle as much as possible, and it is possible to prevent a decrease in driving service due to the control operation.

  In addition, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 10 ... Building, 11 ... Elevator, 12 ... Hoisting machine, 13, 13a, 13b ... Main rope, 14 ... Ride car, 15 ... Counter weight, 16 ... Compensation, 17, 17a, 17b ... Compen rope, 18 ... Car Control device, 19 ... car door, 20 ... transmission cable, 21a, 21b, 21c ... landing, 22 ... control device, 23 ... acceleration sensor, 24 ... load sensor, 31 ... rope runout estimation unit, 32 ... operation control unit, 32a ... number of passengers detection part, 32b ... management driving start part, 32c ... door opening and closing control part, 33 ... driving control part, 34 ... notifying part, 35 ... timer, 36 ... rope swing estimation part, 41 ... destination floor button, 42a ... Door open button, 42b ... door close button, 43 ... speaker.

Claims (9)

In an elevator control device equipped with a car that moves up and down via a rope installed in a hoistway of a building,
Building shaking detection means for detecting the shaking of the building,
Rope swing estimation means for estimating the amount of swing of the rope based on the amount of swing of the building detected by the building swing detection means and the position of the car;
Passenger number detection means for detecting the number of passengers in the car,
Based on the number of passengers detected by the number-of-passengers detection means, a threshold value for rope runout is set, and when the amount of rope runout estimated by the rope shake estimation means exceeds the threshold value, control operation is activated. Control operation activation means;
When the control operation is activated by the control operation activating means, the operation control means for stopping the car at the nearest floor and then evacuating from the nearest floor to a retreat floor with less rope swing,
Based on the number of passengers detected by the number-of-passengers detection means, a door opening time during the control operation is set, and the door opening is controlled according to the door opening time when the car stops at the nearest floor. An elevator control device comprising: a door opening / closing control means. The control operation invoking means is
When the number of passengers detected by the number-of-passengers detection means is a predetermined number or more, the threshold for rope runout is set lower than normal, and when the number of passengers is less than the predetermined number, the threshold for rope runout The elevator control device according to claim 1, wherein a higher value than normal is set. The door opening / closing control means includes
When the number of passengers detected by the number-of-passengers detection means is a predetermined number or more, the door opening time during the control operation is set longer than usual, and when the number of passengers is less than the predetermined number, 2. The elevator control device according to claim 1, wherein a door opening time during the control operation is set shorter than usual. The door opening / closing control means includes
When the car stops at an arbitrary floor during normal operation, the time until the rope runout estimated by the rope runout estimation means reaches the threshold is predicted. 2. The elevator control device according to claim 1, wherein the door closing of the car is promoted so as to depart at the beginning.   5. The elevator control device according to claim 4, wherein the door opening / closing control means notifies by voice through a speaker installed in the car.   5. The elevator control apparatus according to claim 4, wherein the door opening / closing control means starts a door closing operation immediately when a door opening button in the car is not pressed. The operation control means includes
When the amount of rope swing estimated by the rope swing estimation means exceeds the threshold value, control operation is performed based on the traveling direction of the car and the magnitude of shaking of the building. The elevator control device according to claim 1. The operation control means includes
The normal operation is continued without carrying out the control operation when the traveling direction of the car is a direction of attenuation of the rope swing and the shaking of the building is a predetermined value or less. 1 control device for an elevator according. The operation control means includes
Assuming that the car has stopped at the nearest floor before the control operation is activated, the swing of the rope may increase while the door is open at the nearest floor, and the rope may contact the hoistway equipment. The elevator control device according to claim 1, wherein the threshold value is reset so that the control operation is activated as soon as possible when the possibility is judged.

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