JPH06305648A - Operation control device for multi-car system elevator - Google Patents

Abstract

PURPOSE:To provide a highly efficient operation control device for a multi-car system elevator which has safety causing no rearend collision mutually and by which an operation interval becomes short. CONSTITUTION:An operation control device measures a present position of a riding cage 3-1 by a cage position measuring device 3-4, and determines a safety stopping floor position of a succeeding riding cage 9 according to a blocking-up interval set by taking into consideration the minimum interval necessary between the riding cages, and also calculates a stopping possible position of the succeeding riding cage 9, and controls riding cage operation so as to stop the succeeding riding cage when the stopping possible position enters the safety stopping floor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation control device for a multi-car elevator that operates a plurality of cars on the same traveling shaft, and is particularly used for safe and highly efficient operation of cars. And a preferred operation control device for a multi-car elevator.

[0002]

2. Description of the Related Art Generally, a conventional elevator is provided with an individual shaft for each car so that the car can freely travel in the vertical direction.
Therefore, the elevator according to the prior art controls the running and stopping of the car in consideration of the current position of the own machine, the elapsed running time, the call-handling status, etc., as disclosed in Japanese Patent Publication No. 54-24574. It was something to do.

Further, as a conventional technique in which the positions of other cars are taken into consideration during operation, a method of stopping one car in order to prevent wind noise due to cars traveling in the same direction is disclosed in, for example, Japanese Patent Publication No. 58- No. 42109 and the like are known.

However, the above-mentioned elevator having an individual shaft for each car causes a problem that when the elevator is installed in a high-rise building, the ratio of the floor area occupied by the elevator to the floor area of the building increases. Let

As a conventional technique relating to an elevator which can solve the above problems and reduce the floor occupation area ratio of the elevator, for example, Japanese Patent Laid-Open No. 3-2977.
Techniques described in Japanese Patent Publication No. 83, Japanese Patent Application Laid-Open No. 4-129986 and the like are known.

This prior art relates to a multi-car type elevator system in which a plurality of cars are operated within the same traveling shaft.

Incidentally, as a typical technique for operating a plurality of moving objects on the same track, for example, a technique relating to the operation management of a railway vehicle described in Japanese Patent Laid-Open No. 4-201674 is known. Are known.

[0008]

Since the multi-car type elevator operates a plurality of cars in the same traveling shaft, unlike a conventional elevator system having an individual shaft for each car, for example, ,
There are unique restrictions such as the risk of a car colliding with you, the inability to reverse direction freely, and the inability to overtake another car.

The prior art relating to the operation control of the car described in Japanese Patent Publication No. 54-24574, Japanese Patent Publication No. 58-42109, etc. is not intended for a multi-car type elevator, so that the multi-car system described above is used. There is a problem that the restrictions peculiar to the car system are not taken into consideration and the car cannot be directly applied to the multi-car system elevator.

Further, the prior art relating to the multi-car type elevator described in the above-mentioned Japanese Patent Laid-Open Nos. 3-297783 and 4-129986 relates to a mechanism, and a method for realizing operation control of a car. Has not been taken into consideration.

On the other hand, the prior art of the operation management system for railway vehicles is to operate the railway vehicles according to an operation schedule prepared in advance, and perform operation control such as stopping even if there are no passengers at the stop station. However, there is a problem in that it cannot be applied as it is to an elevator system that requires flexible operation in response to usage requests from users.

The biggest difference between the railway system and the elevator system is that the railway moves in the traveling direction due to inertia when power is cut off, whereas the elevator has an emergency stop device under the influence of gravity. It may fall to. Therefore, it is necessary to realize a safe multi-car elevator operation control device that does not collide at any time in consideration of these points.

An object of the present invention is to provide an operation control device for a multi-car elevator system which solves the above-mentioned problems of the prior art, is safe, and can improve the transportation capacity by shortening the operation interval. To do.

[0014]

According to the present invention, the above-mentioned object is a basic operation control means for determining and controlling an operation method of a car according to a distance between the cars before and after traveling in a circulation type traveling shaft. It is achieved by providing.

Further, the above object is achieved by providing operation control means for deciding and controlling an operation method of a succeeding car in response to a position of a car traveling ahead in the circulation type traveling shaft.

[0016] Further, the above-mentioned object is required from the position of the car traveling in the circulation type traveling shaft to the rear, the fall distance until the car is stopped by the emergency stop device in an emergency, and the following car to stop. The distance and the maximum travel distance of the car per operation-related calculation cycle of the operation control device,
This is achieved by providing a prohibition means for prohibiting the operation of the succeeding car within the distance interval of the sum of the three types of distances.

Further, the above-mentioned object is to provide a car position measuring means for measuring the position of a car traveling in the circulation type traveling shaft, and a car for the succeeding car within a predetermined interval behind the measured car position. Blocking section setting means to set as a blocking section for which operation is prohibited, and the stop floor of the following car required to maintain the block section is selected from the service floors and set as the security stop floor Means, a stoptable position calculating means for calculating the position where the car can normally stop before the position of the car that is running, and the calculated stoppable position are set as the security stop floor. It is achieved by including a car stopping means for detecting the above-mentioned condition and stopping the corresponding car.

Further, the above object is achieved by providing stop continuation means for detecting that the position of the stopped car is at the security stop floor and continuing the stop of the car concerned.

[0019] Further, the above-mentioned object is that when a failure of at least one of the plurality of cars is detected, or when a signal from at least one of the plurality of cars is normal. It is achieved by providing car stop means for stopping the travel of all cars when not transmitted to the car.

[0020]

The function of the elevator car is based on the mark information provided in the traveling shaft or the signal from the mechanical floor controller having the moving part that synchronously scales the motion of the elevator car. To measure the current position, or the floor position when the car is stopped,
It operates to calculate the current position based on the traveling time, the acceleration / deceleration time, and the like.

The block section setting means operates so as to set a block interval within a predetermined interval behind the measured position of the car as a block section for prohibiting the operation of the following car.

The security stop floor setting means operates so as to select and set the stop floor of the subsequent car required for holding the block section from the service floor.

The stoppable position calculating means operates so as to calculate the position at which the car can normally stop based on the current position of the car, the traveling time, the acceleration / deceleration time, and the like.

The car stopping means operates to detect that the calculated stoppable position is set on the security stop floor and stop the car concerned.

The stop continuation means operates so as to detect that the position of the stopped car is at the security stop floor and continue stopping the car concerned.

The operation control means constantly monitors the current position of the preceding car and the stoppable position of the following car, and the stoppable position of the subsequent car is determined from the current position of the preceding car. When entering within a predetermined interval, it operates to stop the following car.

The operation prohibiting means is set as a closed section within a predetermined interval from the current position of the preceding car to prohibit the operation of the succeeding car, and the stopable position of the succeeding car is within the closed section. When it enters, it operates to stop the following car.

The car stopping means is for detecting a failure of at least one car among a plurality of cars,
Alternatively, when the signal from at least one of the plurality of cars is not normally transmitted, the operation of stopping all the cars is performed.

According to the present invention, the minimum distance between the cars of the multi-car elevator can be always maintained at a predetermined value by the operations of the above-mentioned means and their associated operations so that they can collide with each other. It is possible to realize a safe multi-car elevator system that does not have to.
Further, according to the present invention, the position of each car and the stoppable floor of the following car are constantly calculated to operate so as to maintain the minimum interval, so that the interval between cars is minimized. It is possible to realize a multi-car elevator system with a short operation interval and a high degree of freedom in operation.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an operation control device for a multi-car elevator according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing a system configuration of an embodiment of the present invention, FIG. 2 is a diagram for explaining an outline of a multi-car system, FIG. 3 is a diagram for explaining a block interval and a security stop floor,
FIG. 4 is a flow chart for explaining the overall operation of one embodiment of the present invention, FIG. 5 is a flow chart for explaining the operation during stop processing, FIG. 6 is a flow chart for explaining the operation during acceleration processing, and FIG. 7 is a security stop floor. FIG. 8 is a flow chart for explaining the operation of the setting process, FIG. 8 is a flow chart for explaining the operation of the constant speed running process, and FIG. 9 is a flow chart for explaining the operation of the decelerating process. 1 to 3, 1 is an operation control device, 2 is a car control device, 3 is a car, 4 is a hall call button, 5 is an ascending traveling shaft, 6 and 8 are direction reversing spaces, and 7 is a descending traveling shaft. 1-1 is a security stop setting unit, 1-2 is a stoppable position calculation unit, 1-3 is a car stop unit, 3-1 is a car body, 3-2 is a car outer frame, and 3-
3 is a safety device and 3-4 is a car position measuring device.

As shown in FIG. 1A, the operation control device for a multi-car elevator according to an embodiment of the present invention includes an operation control device 1, a car control device 2, a car 3, and a hall call button 4. The operation control device 1 includes a safety stop setting unit 1-1, a stoppable position calculation unit 1-2, and a car stop unit 1-3. Then, these respective units are connected to each other by a data transmission path. As shown in FIG. 1B, the car 3 includes a car main body 3-1, a car outer frame 3-2, and a safety device 3-.
3 and a car position measuring device 3-4.

Generally, the operation control 1 of the elevator is executed as a software process in the microcomputer, and the security stop setting section 1-1, the stoppable position calculating section 1-2 and the car are provided as actual hardware in the system. The present invention can be realized without providing the stop portions 1-3 and the like, but here, for convenience of description, each is illustrated separately from the others. Similarly, without providing the operation control device 1, the position information is transmitted between the respective car control devices 2 so that the function of the operation control device 1 is distributed and processed by the car control devices 2. However, the method of one embodiment of the present invention described below can be modified and applied.

In FIG. 1A, the operation control device 1 is
The operation control of a safe multi-car elevator system, which is the basis of the present invention, is performed, and a safety stop setting unit 1-1, a stoppable position calculation unit 1-2, and a car stop unit 1-3 are provided.
It can be realized by including each function of and managing these. And the operation control device 1
Taking in the car position information from the car position measuring device 3-4 and the information of waiting passengers from the hall call button 4 as input,
Operation such as running and stopping of the car 3 is determined, and commands such as a travel stop command, an acceleration / deceleration command, and a door opening / closing command are output to the car control device 2. That is, the operation control device 1
Operates as operation control means and operation prohibition means.

The security stop setting section 1-1 sets a predetermined interval behind the car position measured by the car position measuring device 3-4 as a closed section for prohibiting the operation of the following car. Further, the security stop setting unit 1-1 selects the stop floor of the subsequent car required for holding the set block section from the service floor and sets it as the security stop floor. That is, the security stop setting unit 1-1 has a function as a block section setting means and a security stop floor setting means.

The stoppable position calculating section 1-2 is provided for the car 3
Based on the current position, running time, acceleration / deceleration time, etc., it calculates a position at which the car can be stopped at a normal deceleration, and has a function as a stoppable position calculation means.

The car stop unit 1-3 detects that the stoppable position calculated by the stoppable position calculation unit 1-2 is set on the security stop floor, and stops the corresponding car. Also, it detects that the position of the stopped car is on the security stop floor, and continues stopping the corresponding car. That is, the car stop unit 1-3 has a function as car stop means and stop continuation means.

The car control device 2 is provided corresponding to each of the car 3, receives the above-mentioned commands from the operation control device 1, and operates a car drive device (not shown) for opening and closing the door. Controls the motor, etc.

As a car driving device for a multi-car type elevator, a self-propelled car equipped with a power source such as a linear motor and an electric motor on the car side, and a rope driven by a motor installed in a machine room, There is a non-self-propelled type in which the car is driven by the rope.

The present invention addresses this difference in running system
This can be dealt with by setting the distance between the cars described above, and therefore the present invention can be applied regardless of the type of the multi-car system. One embodiment of the present invention described below will be described as a case where the car is self-propelled by a linear motor incorporated in the car outer frame 3-2.

The car 3 is, as shown in FIG. 1 (b),
Car body 3-1, car outer frame 3-2, safety device 3-
3 and a car position measuring device 3-4. Then, in the car outer frame 3-2, a linear motor for driving the car,
A motor for opening and closing the door is provided, and these are controlled by a control signal from the car control device 2. Also,
The safety device 3-3 is configured to include an emergency stop device (catch), a shock prevention device (bumper) at the time of a rear-end collision, and the like.

The car position measuring device 3-4 reads the mark information provided in the traveling shaft and measures the current position of the car. In one embodiment of the present invention, the position of the car is grasped by the height of the floor of the car body 3-1 on which the passenger stands, and the position of each floor is also expressed by the height of the floor of each floor. In addition, in one embodiment of the present invention, the height of the floor surface is a distance from a reference point (such as the lowest point) of the building.

As a term used to describe one embodiment of the present invention, the current position of the car, which is expressed as the distance from the reference point of the building, is the "synchronous position" and its corresponding floor is the "synchronous floor". The floor is referred to as "floor", the position where the car can be stopped is referred to as "preceding position", and the floor corresponding to the preceding position is referred to as "preceding floor."

Next, an outline of a multi-car type elevator system to which the present invention is applied will be described with reference to FIG.

In the multi-car type elevator system to which the present invention is applied, an elevator traveling shaft 5 used exclusively for traveling in an ascending direction of a car, a descending traveling shaft 7 used exclusively for traveling in a descending direction, and a traveling direction A plurality of cages are provided in a circulation type traveling shaft that is provided with an upper direction reversing space 6 that is converted and moves from the traveling shafts 5 to 7, and a lower layer direction reversing space 8 that moves from the traveling shafts 7 to 5. 3 is run. At this time, the number of cars that can travel in the same direction at any position is limited to one, and reversal of the traveling direction is performed only in the vertical direction reversal spaces 6 and 8.

Although the example shown in FIG. 2 shows the case where there are five cars as an example, the present invention can be implemented without being limited to the number of cars and the number of floors. Further, the present invention can be applied without problems even to the case of a circulation type traveling shaft in which a guide rail of a car has a double track on the middle floor and a single track only on the end floor, such as a switchback system of a railway line. be able to.

The present invention does not consider a multi-car system in which a plurality of cars simultaneously move up and down within a single shaft.

Next, the basic idea of the present invention, the closing interval and the security stop floor, will be described with reference to FIG.

In a multi-car type elevator, the following car may catch up with the car in front and collide with it. In order to prevent this, the distance between the cars is always kept at a predetermined interval or more. There is a need to. The operation control device 1 has to ensure the safety by operating the following car in consideration of the interval between the cars traveling in front and stopping the following car when necessary.

Now, as shown in FIG. 3, taking the case where the car 3 is stopped at the position of the 10th floor in the ascending traveling shaft 5, as an example, the preceding car and the following car Explain safe intervals.

In FIG. 3, a position where the following car is virtually closest to the car 3 which is stopped at the position on the 10th floor is shown as a virtual closest approaching car 9.
Between car 3 and car 9 to prevent rear-end collision,
There is a distance that must always be held, illustrated as "required distance between cars". This interval is determined by the factors of control and mechanism, and from the viewpoint of control, it is determined by a margin interval for ensuring safety even in the worst case and an interval caused by control delay etc. It

The elevator can be stopped by "normal stop", which is stopped at a prescribed deceleration in a normal state, "emergency stop", which is stopped due to a power outage, etc. There is an "emergency stop" in which the emergency stop device called a catch is used to stop the vehicle from falling.

It is necessary to secure the safety of avoiding a rear-end collision even in the worst emergency stop with the above-mentioned distance between the cars in the multi-car type operation control device, and until the car is stopped by the emergency stop device in an emergency. It is necessary to set considering the fall distance.

Further, the above-mentioned interval needs to take into consideration the control delay. For example, the rated speed of the elevator is 60 m / min, which is a low speed, and the operation-related calculation cycle of the operation control device 1 is 0.1 seconds. If so, the car will travel a maximum distance of 0.1 m per calculation cycle, and the rated speed will be 900 m.
At a high speed of / minute, the maximum traveling distance per calculation cycle becomes 1.5 m. That is, when a command is issued to stop any car 3 at any time, from the decision to issue a stop command,
Up to the actual announcement, there will be a delay of up to the operation-related calculation cycle, and as described above, the car will travel during that time, so the required interval between cars is at least the maximum travel per calculation cycle. It is necessary to set the interval more than the distance.

The above-mentioned two distances must be met at the same time, so that the above-mentioned distance between the cars is
In an emergency, it is necessary to set the minimum distance of the sum of the fall distance until the car stops at the emergency stop device and the maximum traveling distance of the elevator per operation-related calculation cycle of the operation control device.

Further, as an interval related to the mechanism, there is an interval determined due to the handling of the mechanical system, ropes, power feeding equipment, auxiliary equipment such as information transmission system, and this distance is more than the distance due to the above-mentioned control factors. If it is large, it is necessary to secure the interval of this mechanical factor as well.

Since the position of the car 3 is grasped by the height of the floor of the car body 3-1, it is necessary to consider the size of the car as a space between car positions. And this interval is the "blocking interval" shown in the figure.
Is.

Now, the following car can exist at the position of the virtual closest approaching car 9 in the closest state, but if the following car is not stopped while the preceding car is stopped. I won't. At this time, since there are passengers in the following car, the car will be stopped at a position other than the service floor, which is unfavorable because it makes passengers uneasy.

Therefore, in order to prevent the car following the car from catching up with the car in front and colliding with the car in front, the position where the car following is stopped and stands by is the position of the car in front. The service floor will be separated by more than the block interval. In one embodiment of the present invention, this service floor is referred to as "security stop floor", and the car 3
Each floor from the synchronous floor of (1) to the security stop floor will be referred to as a security stop section. In the case of the example shown in FIG. 3, the 7th to 10th floors of the ascending shaft are the safety stop sections.

Since the example shown in FIG. 3 has been described with respect to the ascending traveling shaft 5, the safety traveling stop floor is below the position of the virtual closest succeeding car 9 but the descending traveling shaft 7 is used.
Inside, naturally, the position is above the position of the virtual closest succeeding car 9. In addition, when the non-stop floor is set and the express passage zone is set as the elevator system, the service floor in front of this is taken as the security stop floor in consideration of that.

Next, the operation of the embodiment of the present invention configured as described above will be described with reference to the flow charts shown in FIGS. In the following description, since publicly known methods such as a car accelerating method and a door opening / closing method are disclosed in many documents such as Japanese Patent Publication No. 54-24574, the description thereof will be omitted. .

First, the overall operation of one embodiment of the present invention will be described with reference to the flow chart shown in FIG.

The processing for this entire operation is performed in the operation control device 1, and the car control device 2 controls the actual equipment based on various command signals created here. . The operation control device 1 performs a number of processes in addition to waiting time prediction, allocation control, control operation control, and the like.
Since it is disclosed in Japanese Patent Laid-Open No. 3-247276, the description thereof will be omitted. Here, the car traveling stop processing program 10
Only the flow of will be described. This traveling stop process 10
Is a process that is repeatedly activated in each control cycle of the operation control device 1.

(1) Since the traveling stop processing program 10 carries out processing for all cars,
Set the car loop (steps 10-1, 10-
7).

(2) After that, it is confirmed whether or not each car is operating normally, and if any one car is not normal, as an emergency, all cars are commanded to stop and loop processing is performed. Exit and move to emergency response processing (especially explained, not shown) (steps 10-2, 10-3, 10-).
8).

(3) If it is confirmed in step 10-2 that the full car is operating normally, it is checked whether or not a running command is set for the car being processed. What is a travel command?
The signals are set to Yes when the car is running and No when the car is stopped, and if the travel command is No, that is, if the car is stopped, a subroutine of processing during stop described later is executed (steps 10-4 and 20). .

(4) If the traveling command is Yes in the judgment of step 10-4, it is checked whether or not the acceleration command is set for the car being processed. The acceleration command is a signal which is set to Yes during acceleration of the car and is set to No other than that,
If the acceleration command is Yes, the subroutine of the during-acceleration process described later is executed (steps 10-5 and 30).

(5) If the acceleration command is No in step 10-5, it is checked whether or not the deceleration command is set for the car being processed. The deceleration command is a signal that is set to Yes when the car is decelerating and No otherwise. If the deceleration command is No, a subroutine for constant speed running processing is executed. If the deceleration command is Yes, The deceleration process subroutine is executed (steps 10-6, 40, 5).
0).

(6) After completion of the subroutine processing of step 20, 30, 40 or 50, it is judged whether or not the processing for all the cars has been completed, and if not completed, the step for the next car is performed. The process of 10-2 and below is repeated. If all the cars have been completed, the processing for one cycle relating to traveling stop is completed (steps 10-7, 10-8).

Next, details of the in-stop processing subroutine 20 of the car to be processed will be described with reference to the flow chart shown in FIG.

(1) First, it is checked whether or not the synchronous floor, which is the floor where the car to be processed is currently stopped, is set as the security stop floor, and the synchronous floor is set as the security stop floor. If it is, the operation of the door close button in the car is temporarily disabled to prevent running while the safety is stopped. After that, the process returns to the travel stop processing program 10, which is the program that called the subroutine 20. By this processing, the door closing operation is postponed and the door opening time is extended. In addition, when an information output device is provided in the car, information guidance such as "I am waiting for a signal now" may be output. The function of this processing corresponds to stop continuation means for detecting that the position of the stopped car is in the safety stop section and continuing the stop of the car (steps 20-1, 20-2,
20-12).

(2) If it is determined in step 20-1 that the synchronous floor is not the security stop floor, it is checked whether or not the boarding / alighting process is completed. Without doing anything, it returns to the travel stop processing program 10 which is the program that called the subroutine 20 (steps 20-3 and 20-12).

(3) If it is determined in step 20-3 that the boarding / alighting process is completed, it is checked whether or not the door opening command is set. If the door opening command is set, the door opening command is canceled and the door opening command is released. Set the close command. The car control device 2 starts the door closing process by setting the door closing command (step 20-4).
~ 20-6).

(4) If it is determined in step 20-4 that the door opening command is not set, and after the processing of step 20-6 is completed, it is checked whether or not the door closing processing is completed, and it is completed. If there is not, to continue the stop, return to the travel stop processing program 10 which is the program that called the subroutine 20 without doing anything (steps 20-7, 20-1).
2).

(5) If it is determined in step 20-7 that the door closing process is completed, the service stop command is released, the safety stop command is released, the travel command is set, and the acceleration command is set. In response, the car control device 2 starts accelerating the car (steps 20-8 to 20-1).
1).

(6) As described above, the traveling stop processing program 10 which is the called program after the processing of the processing sub-routine processing 20 of the car which is the processing target is completed.
Return to (step 20-12).

Next, details of the processing subroutine 30 during acceleration of the car to be processed will be described with reference to the flow chart shown in FIG.

(1) The value of the synchronous position S measured in the previous cycle is copied and set in a variable Sx stored in a memory (not shown) or the like, and a signal from the car position measuring device 3-4
The current synchronization position S is measured (steps 30-1 and 30).
-2).

(2) The preceding position P, which is the position where the car can be stopped, is calculated. This process corresponds to a stoppable position calculating means during acceleration. Here, when the acceleration values during acceleration and deceleration are equal, the distance required for deceleration is equal to the distance required for acceleration. Therefore, the leading position P of the car during acceleration can be obtained by adding twice the traveling distance (S-Sx) of each cycle during acceleration (step 30-3).

(3) The synchronous floor and the preceding floor corresponding to each of the measured synchronous position S and the calculated preceding position P are calculated. These can be determined by comparing the determined position with the recorded value of the height of each floor from the building reference point. Then, a subroutine for setting the security stop floor from the calculated synchronous floor is executed. The contents of the security stop floor setting subroutine will be described later (step 30-
4, 60).

(4) After the execution of the security stop floor setting subroutine, it is checked whether the preceding floor of the car to be processed is set to the security stop floor of the preceding car, and the safety stop floor is set. If not set, it is checked whether or not the preceding floor is the service stop floor (steps 30-5 and 30).
-7).

(5) In step 30-5, when it is determined that the preceding floor of the car to be processed is set to the safety stop floor of the car in front, a command to close the target car, That is, the security stop command is set (step 30-6).

(6) After the processing of step 30-6 is completed, and when it is determined in step 30-7 that the preceding floor is the service stop floor, a service stop command is set to the car to be processed. , Release the acceleration command and set the deceleration command. This series of processes corresponds to the car stopping means during acceleration. In the case of the above-mentioned processing after the processing of step 30-6, the car is stopped for security reasons, but in order to be able to provide services to waiting passengers on the security stop floor, Similar to the process after the process, the process of the service stop command is also set (steps 30-8 to 30-10).

(7) If it is determined in step 30-7 that the preceding floor is not the service stop floor, it is checked whether or not the car to be processed has reached the maximum speed. Is canceled and the car is driven at a constant speed (steps 30-11 and 30-12).

(8) If the car has not reached the maximum speed in step 30-11, the acceleration is continued as it is, and after the process of step 30-12 is completed, the car during the acceleration process is processed. Is terminated and the program returns to the travel stop processing program 10 which is the called program (step 30-13).

Next, the details of the above-mentioned security stop floor setting processing subroutine 60 will be described with reference to the flow shown in FIG.

(1) First, the traveling direction of the car to be processed is determined (step 60-1).

(2) When it is determined in step 60-1 that the traveling direction of the car is the ascending direction, the value L of the blocking interval is subtracted from the current synchronous position S, and the value is subtracted below the subtracted position. Calculate the nearest service floor (step 60)
-2, 60-3).

(3) When it is determined in step 60-1 that the traveling direction of the car is the descending direction, the value L of the closing interval is added to the current synchronous position S, and the value is added above the added position. Calculate the nearest service floor (step 60-
4, 60-5).

(4) After that, from the current synchronous floor to the calculated floor is set as the security stop floor. For example, in the case of the example shown in FIG. 3, this setting is 7-10 in the ascending direction.
Since the floor is the security stop floor, the variable representing the security stop floor in the ascending direction of the target car is 1 in order from the lower bit.
A binary number representing the second floor, ..., And is set as (0111 1000 1001 1010). This binary variable is the security stop floor setting for the target car, and the succeeding cars refer to this value to determine whether the security stop floor is set. Thus, the security stop floor setting process is completed, and the process returns to the called subroutine (steps 60-6 and 60-7).

Next, details of the processing subroutine 40 during constant speed traveling of the car to be processed will be described with reference to the flow chart shown in FIG.

(1) The value of the synchronous position S measured in the previous cycle is copied and set in a variable Sx stored in a memory (not shown) or the like, and a signal from the car position measuring device 3-4
The current synchronization position S is measured (steps 40-1, 40)
-2).

(2) The preceding position P, which is the stopable position of the car, is calculated. This processing corresponds to a stoppable position calculating means during traveling at a constant speed. Here, since the distance required for deceleration is calculated by calculating the preceding position P during acceleration, the preceding position during constant speed traveling is the traveling distance (S-Sx) of each cycle.
Can be obtained by adding (step 4
0-3).

(3) The synchronous floor and the preceding floor corresponding to each of the measured synchronous position S and the calculated preceding position P are calculated, and then the security stop floor is set from the calculated synchronous floor. The same subroutine as described is executed (steps 40-4, 60).

(4) After the execution of the security stop floor setting subroutine in step 60, it is checked whether or not the preceding floor of the target car is set to the security stop floor of the preceding car (step 40- 5).

(5) In step 40-5, when it is determined that the preceding floor of the target car is set to the safety stop floor of the preceding car, the target car receives a safety stop command, Set the service stop command and deceleration command respectively. This series of processing corresponds to the car stopping means during traveling at a constant speed (steps 40-6, 40-8, 40-9).

(6) If it is determined in step 40-5 that the preceding floor of the target car is not set as the security stop floor of the preceding car, the preceding floor is the service stop floor. If the preceding floor is the service stop floor, the processing from step 40-8 described above is performed (step 40-7).

(7) If it is determined in step 40-7 that the preceding floor is not the service stop floor, the constant speed traveling is continued. Then, when the processes of steps 40-7 and 40-9 are completed, the process during constant speed traveling of the car to be processed is completed, and the process returns to the travel stop processing program 10 which is the called program (step 40-10).

Next, the details of the processing subroutine 50 during deceleration of the car to be processed will be described with reference to the flow chart shown in FIG.

(1) First, the cage position measuring device 3-4
The current synchronous position S is measured by the signal from the above, the synchronous floor corresponding to the measured synchronous position S is calculated, and then the above-mentioned subroutine for setting the security stop floor from the calculated synchronous floor is executed. (Steps 50-1, 50-
2, 60).

(2) Next, it is checked whether or not the deceleration of the car is completed, and if the deceleration is not completed, the process during deceleration is continued, so the running stop process which is the program called without doing anything. Return to program 10 (step 50-
3, 50-8).

(3) If it is determined in step 50-3 that the deceleration is completed, the traveling command is canceled, the deceleration command is canceled, the door closing command is canceled, and the door opening command is continuously set. The car control device 2 starts the door opening process in response to the door opening command. When the above processing is completed, the processing during deceleration of the car to be processed is completed, and the program returns to the travel stop processing program 10, which is the called program (step 5).
0-4, 50-8).

According to the embodiment of the present invention controlled as described above, the security stop can be performed in the same manner as the service stop, and in the normal acceleration / deceleration range, A safe multi-car elevator can be realized.

In addition, the acceleration and deceleration during running may be controlled once, and the car may not run repeatedly at a low speed other than the rated speed, which is uncomfortable for passengers. It is possible to operate a car without giving an uncomfortable feeling or feeling of anxiety.

Furthermore, according to the embodiment of the present invention, since the door is opened on the service floor during the security stop, passengers do not feel trapped, and the service stop command is also given at the time of the security stop. Even if another car is assigned to the corresponding security stop floor, the car whose security is stopped can provide the service.

[0106]

As described above, according to the present invention, the current position of the car traveling ahead and the stoppable position of the following car are constantly monitored, and the stoppable position of the following car travels forward. The car operation is controlled so that the following car is stopped when the car enters within a predetermined interval from the current position of the car.Therefore, the cars do not collide with each other. It is possible to provide an operation control device for a system elevator system, and since the distance between the cars can be minimized, a multi-car elevator system with a short operation interval and a high degree of freedom of operation is realized. be able to.

[Brief description of drawings]

FIG. 1 is a block diagram showing a system configuration of an embodiment of the present invention.

FIG. 2 is a diagram illustrating an outline of a multi-car system.

FIG. 3 is a diagram illustrating a block interval and a security stop floor.

FIG. 4 is a flowchart illustrating the overall operation of the exemplary embodiment of the present invention.

FIG. 5 is a flowchart illustrating an operation of processing during stop.

FIG. 6 is a flowchart illustrating an operation of processing during acceleration.

FIG. 7 is a flowchart illustrating an operation of a security stop floor setting process.

FIG. 8 is a flowchart illustrating an operation of processing during traveling at a constant speed.

FIG. 9 is a flowchart illustrating an operation of processing during deceleration.

[Explanation of symbols]

 1 Operation control device 2 Car control device 3 Car 4 Hall call button 5 Ascending travel shaft 6, 8 Direction reversal space 7 Descending travel shaft 1-1 Safety stop setting part 1-2 Stoppable position calculation part 1-3 Car Stopping part 3-1 Car body 3-2 Car outer frame 3-3 Safety device 3-4 Car position measuring device

Claims (14)

[Claims] 1. A circulation type traveling shaft formed by an ascending traveling dedicated shaft and a descending traveling dedicated shaft connected to an upper layer and a lower layer, a plurality of cars traveling in the circulation type traveling shaft, and a passenger. In a multi-car system elevator system configured with an operation control device that determines and controls the operation of the car in response to the usage request from the car, before and after a plurality of cars traveling in the circulation type traveling shaft. An operation control device for a multi-car elevator, comprising an operation control means for determining an operation method of a car according to a distance between the cars and controlling the car. 2. A circulation type traveling shaft formed of an ascending traveling exclusive shaft and a descending traveling exclusive shaft connected to each other in an upper layer and a lower layer, a plurality of cars traveling in the circulation type traveling shaft, and a passenger. In a multi-car elevator system configured with an operation control device that determines and controls the operation of the car in response to a usage request from the car, the position of the car traveling in front of the circulation type traveling shaft. An operation control device for a multi-car elevator characterized by comprising operation control means for determining an operation method of a car that follows in response to the car and controlling the car. 3. A circulation type traveling shaft formed by an ascending traveling exclusive shaft and a descending traveling exclusive shaft connected to each other in an upper layer and a lower layer, a plurality of cars traveling in the circulation type traveling shaft, and a customer. In a multi-car type elevator system configured with an operation control device that determines and controls the operation of the car in response to a usage request from the car, a traveling direction from the position of the car traveling in the circulation type traveling shaft Behind, of the fall distance until the car stops at the emergency stop device in an emergency, the distance required for the following car to stop, and the maximum travel distance of the elevator per operation-related calculation cycle of the operation control device. A multi-car type elevator that is equipped with an operation prohibiting means for prohibiting the operation of the following car within the distance interval of the sum of the three types of distances. Operation control device. 4. A circulation type traveling shaft formed by an ascending traveling dedicated shaft and a descending traveling dedicated shaft connected to the upper layer and the lower layer, a plurality of cars traveling in the circulation type traveling shaft, and a customer. In a multi-car elevator system configured with an operation control device that determines and controls the operation of the car in response to a usage request from the car, the position of the car traveling in the circulation type traveling shaft is measured. Car position measuring means, a block interval setting means for setting a block interval for prohibiting the operation of the following car within a predetermined interval behind the measured car position, and for holding the block interval. Security stop floor setting means for selecting the required stop floor of the following car from the service floor and setting it as the security stop floor,
A stoppable position calculating means for calculating a position where the car can normally stop before the position of the car that is running, and detecting that the calculated stoppable position is set as the security stop floor An operation control device for a multi-car elevator, comprising a car stopping means for stopping the corresponding car. 5. The multi-car elevator according to claim 4, wherein the car position measuring means directly measures the current position of the car by using mark information provided in the traveling shaft. Operation control device. 6. The car position measuring means indirectly measures the current position of the car on the basis of a signal from a mechanical floor controller having an operating section in which the motion of the car is synchronously scaled down. The operation control device for a multi-car system elevator according to claim 4, wherein. 7. The car position measuring means estimates the current position by calculation based on a floor position at the time of stop, a running time, an acceleration / deceleration time, and the like. Operation control device for multi-car elevator. 8. The blocking section setting means sets a predetermined interval set as a blocking section as a fall distance until a car stops at an emergency stop device in an emergency, and per operation-related calculation cycle of the operation control device. 8. The operation control device for a multi-car elevator according to claim 4, wherein the operation distance is set to be equal to or more than the sum of the maximum travel distance of the car. 9. The operation control of the multi-car elevator according to claim 4, wherein the car stopping means stops the car that follows on the security stop floor in an open door state. apparatus. 10. A circulation type traveling shaft formed by an ascending traveling dedicated shaft and a descending traveling dedicated shaft connected to each other in an upper layer and a lower layer, a plurality of cars traveling in the circulation type traveling shaft, and a passenger. In a multi-car elevator system configured with an operation control device that determines and controls the operation of the car in response to a usage request from the car, the position of the car traveling in the circulation type traveling shaft is measured. Car position measuring means, a block interval setting means for setting a block interval for prohibiting the operation of the following car within a predetermined interval behind the measured car position, and for holding the block interval. Security stop floor setting means to select the required stop floor of the following car from the service floor and set it as the security stop floor, and the car that is stopped And a stop continuation means for continuing the stop of the corresponding car by detecting that the position is the security stop floor, and the operation control device for the multi-car elevator. 11. The operation control device for a multi-car elevator according to claim 10, wherein the stop continuation unit includes a function of continuing the stop of the car by extending the door opening time. 12. The operation control device for a multi-car elevator according to claim 10, wherein the stop continuation means includes a function of continuing the stop of the car by disabling the door close button. 13. The car is provided with an information output device by voice, characters, etc. inside thereof, and while the stop continuation means continues to stop the car due to security, the car is provided to a passenger in the car. 13. The operation control device for a multi-car elevator according to claim 10, 11 or 12, wherein guide information is output to the information output device. 14. A circulation type traveling shaft formed by an ascending traveling dedicated shaft and a descending traveling dedicated shaft connected between an upper layer and a lower layer, a plurality of cars traveling in the circulation type traveling shaft, and a passenger. In a multi-car elevator system configured with an operation control device that determines and controls the operation of the car in response to a usage request from the car, at least one car among the plurality of cars A car stop means for stopping the traveling of all cars when a failure is detected or when a signal from at least one car among the plurality of cars is not normally transmitted An operation control device for a multi-car elevator that is characterized by