JPH09202553A - Control device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a service to passengers by a method wherein a landing error during landing of an elevator is set within an allowable range. SOLUTION: A car floor displacement computing means 3 computes a sink amount (a car floor displacement amount) due to a load in a car and a call computing means 4 estimates the number of passengers riding out from a car 5 based on the number of car calls. A displacement amount correcting means 16 corrects to a car floor displacement amount changed due to riding out of the estimated number of passengers. Based on the corrected car floor displacement amount, a speed control means 1 computes the speed command of the car 5, and an electric motor 14 for drive is controlled by an electric motor control means 2 so that an error during landing is eliminated. This constitution absorbs a car floor displacement amount by a vibration insulation rubber 10 and also reduces the occurrence of a landing position error due to riding out of passengers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator control device having a function of correcting a landing error due to bending of a rubber vibration isolator supporting a car against a car frame.

[0002]

2. Description of the Related Art Generally, in elevator landing control, after the car arrives at a predetermined distance in front of the floor, the speed of the car is controlled to land.

FIG. 7 shows a conventional example of an elevator control device. The car 5 of the elevator is supported by a car frame 15 via a rubber vibration isolator 10. Further, the car frame 15 is provided with a landing position detector 13, and the landing detection plate 12 provided in the hoistway of the car 5 detects that the car 5 has reached a predetermined distance before the target floor. To do.

A main rope is attached to the car frame 15, and a counterweight 6 is attached to the other end of the main rope. The main rope is driven by the electric motor 14 to move the car 5 up and down. The electric motor 14 is controlled by the electric motor control means 2. On the other hand, a load detector 11 for detecting a car load is provided at the bottom of the car frame 15 and is input to the speed control means 1.

Such elevator landing control is carried out as follows. That is, when it is detected by the landing detection plate 12 and the landing position detector 13 that the car 5 mounted on the car frame 15 has reached a predetermined distance in front of the target floor, the speed control means 1 is a car. The current car position is calculated by the pulse from the pulse generator 7 that generates a pulse corresponding to the traveling distance of. Further, the remaining distance to the floor can be detected by the operation of the floor-positioning position detector 13 which operates at a predetermined distance before the floor. By counting the remaining distance and the pulse from the pulse generator 7 which changes due to the traveling of the elevator, the speed control means 1 gives a speed command to landing.
Do with.

As shown in FIG. 8, two cage frames 15 are provided.
The landing control of the double-deck elevator having the two cars 5a and 5b is also performed as in the case of FIG.

By the way, the car 5 is decelerating during the landing position control, and the main rope may be extended due to the load in the car, the weight of the car, or the number of main ropes. Therefore, the extension should be corrected. ing. This is why the load detector 11 detects the load inside the car. That is, the car position during operation of the landing position detector 13 includes an error in the distance of extension of the main rope with respect to the distance to the car position during landing in which the extension of the main rope is absorbed. Therefore, in consideration of the load inside the car, the weight of the car, the deceleration, etc., the speed control means 1 calculates the amount of extension of the main rope and corrects the landing.

[0008]

However, such conventional landing control has the following problems. That is, since the car 5 of the elevator is arranged on the antivibration rubber 10 set in the car frame 15, the car floor moves up and down by the amount of deflection of the antivibration rubber 10 due to the load in the car, that is, the load in the car. Will be done. Anti-vibration rubber 10
In order to prevent vibration in the car room, an item that sinks about 3 mm at maximum loading is used. For example, for a 24-seater (65 kg x 24 = 1600 kg), an object that sinks about 3 mm is used.

By the way, the landing position detector 13, which is an operating point for starting the control up to the landing position, is installed on the car floor and is always constant regardless of the load in the car. For this reason, the car floor sinking due to the load inside the car causes a maximum landing error of about 3 mm when the car is actually landed. The larger the landing error, the lower the service to the elevator users. Therefore, it is necessary to carry out the landing considering the displacement of the car floor due to the load inside the car. In particular, when a wheelchair user uses the elevator, the elevator cannot be used smoothly if there is a step when landing.

Therefore, as disclosed in Japanese Unexamined Patent Publication No. 4-182228, there is a system in which the flexure of the anti-vibration rubber is calculated, and the required deceleration distance is corrected based on the flexure amount to perform the landing control. . According to this, although the error of the landing position due to the bending of the anti-vibration rubber can be absorbed, the car load fluctuates when the passenger gets on and off the target floor, so that the landing error occurs after the passenger gets on and off. Also, 2 in one car frame
In the case of a double deck elevator with two cars,
When the control is performed so as to eliminate the landing error of one car, the landing error occurs in the other car.

An object of the present invention is to provide an elevator control device capable of improving the service to passengers by keeping the landing error at the time of landing the elevator within an allowable range.

[0012]

According to a first aspect of the present invention, a load detector for detecting a load in a car, a pulse generator for generating a pulse corresponding to a traveling distance of the car, and a car for a floor in front of a target floor A landing position detector that operates when a predetermined distance is reached,
When the landing position detector operates, the car floor displacement amount is calculated based on the load inside the car detected by the load detector, and the car floor displacement calculation means and the number of people getting off at the destination floor are estimated based on the number of calls of the car. Car call calculation means, displacement amount correction means for correcting the car floor displacement amount based on the getting-off personnel estimated by the car call calculation means, and the car detected by the pulse generator when the landing position detector operates. A speed control means for outputting a speed command corresponding to the distance to the target floor of the car based on the travel distance and the car floor displacement amount corrected by the displacement amount correction means, and a car based on the speed command from the speed control means. And a motor control means for controlling the lifting motor.

According to the first aspect of the present invention, the sinking amount of the car floor due to the load in the car is calculated, the number of people leaving the car is estimated based on the number of calls of the car, and the car that changes by the estimated number of people getting off the car Correct to the floor displacement. Then, the error at the time of landing is eliminated based on the corrected car floor displacement amount. As a result, it is possible to absorb the amount of displacement of the car floor due to the anti-vibration rubber and reduce the landing position error due to the passenger getting off the vehicle.

According to the invention of claim 2, load detectors for detecting the load inside the car are provided for the two cars of the double deck elevator in which the upper and lower cars are installed in the elevator car frame, respectively, and are adapted to the traveling distance of the car. With a pulse generator that generates a pulse, a landing position detector that operates when the car reaches a predetermined distance in front of the target floor, and a load detector for each of the two cars when the landing position detector operates. A car floor displacement calculating means for calculating each car floor displacement amount based on the detected in-car load; a displacement amount correcting means for averaging the car floor displacement amounts of two cars and outputting a car floor displacement amount; When the floor position detector operates, the speed command corresponding to the distance to the target floor of the car is output based on the car traveling distance detected by the pulse generator and the car floor displacement calculated by the displacement amount correction means. That the speed control means, based on the speed command from the speed control means and a motor control means for controlling the lift motor of the car.

According to the second aspect of the present invention, in the landing control in the double-deck elevator, the subduction amount of each car floor due to each load of the upper and lower cars is calculated, and the car floor displacement amount of each car is averaged to arrive at the landing. Correct the floor position. As a result, the landing position error at the time of landing is kept within the allowable range for both the upper and lower cars.

According to a third aspect of the present invention, in the second aspect of the present invention, a car call calculating means for estimating the getting-off personnel for each of the two cars based on the number of calls of the car is provided, and the displacement correction means is the car call calculating means. The car floor displacements of the two cars are respectively corrected on the basis of the respective getting-off persons estimated in step S1, and the car floor displacements of the two cars thus corrected are averaged. It is designed to be output to.

According to the third aspect of the present invention, in the landing control in the double-deck elevator, the number of car calls for each of the upper and lower cars is used to estimate the number of people getting off from each car, and the car floor displacement that changes when the estimated number of people gets off the car. Calculate the amount,
Correct the landing position by averaging the displacements of the upper and lower cars.
Thereby, the landing position error at the time of landing, and further the landing position error due to the passenger getting off the vehicle are reduced.

The invention of claim 4 is the invention of claim 2 or claim 3.
In the invention of claim 1, when the car call calculation unit detects a special call, the displacement amount correction unit corrects the car floor displacement amount so that the car responding to the special call of the two cars has a landing position with priority. It is something that is done.

According to the fourth aspect of the present invention, the landing control in the double deck elevator detects a special call such as a wheelchair call, and the correction of the landing position of the car responding to the special call is prioritized over the other car. Do it. As a result, the landing position error of the special call response car can be eliminated.

[0020]

Embodiments of the present invention will be described below. FIG. 1 is a configuration diagram showing a first embodiment of the present invention. In contrast to the conventional elevator control device shown in FIG. 7, when the landing position detector 13 operates, the load detector 11
The car floor displacement calculation means 3 for calculating the car floor displacement amount based on the load in the car detected by the car, and the number of cars called from the hall call button 8 and the car call button 9 are used to estimate the number of people getting off at the destination floor. The car call calculation means 4 and the displacement amount correction means 16 for correcting the car floor displacement amount based on the getting-off personnel estimated by the car call calculation means are provided.

In FIG. 1, a car 5 of an elevator is supported by a car frame 15 via a vibration-proof rubber 10. Then, the car frame 15 is provided with the landing position detector 13,
The landing detection plate 12 provided in the hoistway of the car 5 detects that the car 5 has reached a predetermined distance in front of the target floor.
A main rope is attached to the car frame 15, and a counterweight 6 is attached to the other end of the main rope. The main rope is driven by the electric motor 14 to move the car 5 up and down. The electric motor 14 is controlled by the electric motor control means 2.

On the other hand, a load detector 11 for detecting the car load is provided at the bottom of the car frame 15, and is input to the car floor displacement calculating means 3. Car floor displacement calculation means 3
Operates when the landing position detector 13 operates, and calculates the car floor displacement amount due to the bending of the anti-vibration rubber 10 based on the in-car load detected by the load detector 11. Further, car call signals from the hall call button 8 and the car call button 9 in the car 5 are input to the call calculating means 4, and the call calculating means 4 gets off at the destination floor according to the number of the car calls. Estimate personnel.

The displacement amount correcting means 16 corrects the car floor displacement amount calculated by the car floor displacement calculating means 3 based on the getting-off personnel estimated by the car call calculating means 4. Then, the corrected car floor displacement amount is output to the speed control means 1. When the landing position detector 13 operates, the speed control means 1 determines the destination floor of the car based on the car travel distance detected by the pulse generator 7 and the car floor displacement amount corrected by the displacement amount correction means 16. The speed command corresponding to the distance to the floor is output. Then, the electric motor control means 2 is the speed control means 1
Based on the speed command from the
Control. This allows the car 5 to perform landing control according to the bending of the anti-vibration rubber 10 and the passengers getting on and off the target floor.

Here, the landing position detector 13 normally operates at a distance of ± X mm for each floor by adjusting the mounting position of the landing detection plate 12 attached to the floor as shown in FIG. The elevator vibration-proof rubber 10 is installed between the car frame 15 and the car 5, but the vibration-proof rubber 10 will sink due to the load in the car, that is, the load depending on the number of passengers. This subduction amount (car floor displacement amount) is optimal for suppressing floor vibration when the vibration damping rubber 10 is about 3 mm when the maximum load of the elevator becomes.

By the way, in the landing control of the elevator, the speed control means 1 is arranged so as to travel a distance of ± X mm from the point where the landing position detector 13 operates, that is, the target floor level.
Calculates the signal from the pulse generator 7. Then, the speed control means 1 outputs a speed command as the calculation result to the electric motor control means 2.

Here, when a full passenger is in the car 5, the car floor is depressed by about 3 mm. Therefore, even when the car is moved by X mm from the point where the landing position detector 13 is operated, the car is raised. The position is 3mm before the landing level. On the other hand, when it descends, it will go over the landing level by 3 mm.

Therefore, in the first embodiment, the load inside the car is input from the load detector 11, and the car floor displacement calculating means 3 calculates the sinking amount of the car floor due to the load,
The displacement amount correcting means 16 corrects the amount of sinking with respect to the distance traveled after the landing position detector 13 operates to match the landing position.

FIG. 3 is a processing flowchart showing the contents of calculation of the elevator control device according to the first embodiment. First, the car floor displacement calculation means 3 inputs the in-car load from the load detector 11 and calculates the in-car load (S2).
1). The bending amount (sinking amount) of the rubber vibration isolator 10 is calculated from this in-car load data (S22), that is, the maximum load is 1600 kg and the amount of flexure of the rubber vibration isolator 10 is 3
If the load in the car is Ykg when the value is mm, the displacement Z of the car floor is given by the equation (1).

Zmm = (3 mm × Ykg) / 1600 kg (1) For example, when the load is 1600 kg, the displacement of the car floor is 3 mm. The displacement amount of 3 mm is input to the displacement amount correcting means 16 and used for correcting the landing position.

Next, the call calculation means 4 confirms the car call signals from the hall call button 8 and the car call button 9. That is, it is determined whether or not there is a car call signal (S23). When there is no car call signal, the call calculation means 4 notifies the displacement amount correction means 16 of the fact, and the displacement amount correction means 16 corrects the car floor displacement amount calculated by the car floor displacement calculation means 3. Is calculated (S24). As a result, the speed control means 1 controls the car 5 so that it travels (X + Z) mm after the landing position detector 13 operates.

That is, as shown in FIG. 4, when the landing position detector operates at time t1, what normally controls the car speed like the curve 32 becomes a curve 33 shown by a dotted line. The car speed is controlled and the car floor displacement is corrected to control the speed. As a result, the normal landing position 34 can be stopped at the landing position 35 in consideration of the sinking amount (car displacement amount) of the anti-vibration rubber 10. The above description is for the case where there is no car call signal, and is usually for the case where no passenger is on board. Therefore, this is a control for landing the car on a predetermined destination floor.

On the other hand, when the call calculation means 4 determines that the car call signal is present, the fact is notified to the displacement amount correction means 16. When there is a car call signal, the displacement amount correcting means 16 estimates the number of people getting off from the number of calls (S2).
5). This is because the sinking amount of the car floor changes depending on the load inside the car, and the sinking amount also changes when passengers inside the car get off.Therefore, both the landing position level at the time of landing and when the passengers inside the car get off This is to correct the deviation.

At the time of boarding the elevator, the passenger always presses the car call button on the destination floor. Therefore, the number of people getting off is estimated based on the number of calls. For example, if only one car call, which has a maximum load of 1600 kg, is registered, it is presumed that all the passengers get off when the elevator is landed. At this time, the amount of displacement of the car floor changes (rises) by 3 mm at the time of landing and when all the passengers are alighted. Therefore,
At the time of landing on the elevator, the displacement amount is corrected to equalize the deviation of the landing position level (S26).

In other words, after the landing position detector 13 operates, it travels by (X + 3/2) mm. Therefore, when landing on the elevator, 1.5m below the landing position level
m, which is 1.5 mm above the landing position level when the passenger gets off the vehicle.

As described above, according to the first embodiment, the getting-off personnel is estimated based on the number of car calls,
Since the amount of displacement of the car floor due to the bending of the anti-vibration rubber is corrected based on the estimated number of people getting off the vehicle, more appropriate landing control can be performed.

Next, a second embodiment of the present invention will be described. FIG. 5 is a configuration diagram showing a second embodiment of the present invention. Although the first embodiment shown in FIG. 1 is for a normal single-deck elevator, the second embodiment has a car frame 15 with two car rooms 5a, 5a, 5b.
This is for a double deck elevator equipped with b.

In FIG. 5, the elevator cars 5a and 5b are shown.
Are connected to the car frame 15 and the anti-vibration rubbers 10a and 10b, respectively. The load detectors 11a and 11b and the car call buttons 9a and 9b are also installed for each car. Other configurations are the same as those of the first embodiment shown in FIG. 1, and therefore, the same components are denoted by the same reference symbols and description thereof will be omitted.

FIG. 6 is a processing flowchart showing the processing contents of the elevator control device in the second embodiment. First, the car floor displacement calculation means 3 calculates the car load for each of the upper and lower cars 5a and 5b (S51).
Anti-vibration rubber 10a, 1 for the upper and lower cars 5a, 5b
The deflection amount (sink amount) of 0b is calculated (S52). On the other hand, the call calculation means 4 determines whether there is a car call (S53), and if there is no car call, determines whether there is a special call (S54). Here, the special call is, for example, a call using a wheelchair button. If there is no special call, the displacement amount correcting means 16 determines the upper and lower cars 5a, 5
Flooring correction is performed by averaging the respective car floor displacement amounts of b (S55).

For example, the displacement of the upper car 5a is 3 mm,
When the displacement of the lower car 5b is 1 mm, from the operating point of the landing position detector 13, {X + (3 + 1) / 2} mm =
It is controlled to travel (X + 2) mm and land. As a result, the errors in the landing positions of the upper and lower cars are averaged, and the deviations in the landing position levels of the upper and lower cars 5a and 5b can be averaged before landing.

If the special call is a wheelchair call in the processing step S54, the car 5 that responds to the wheelchair call
With respect to the above, the displacement amount correcting means 16 corrects the car floor displacement amount giving priority to the floor landing position level of the car 5. That is, if there is a level difference in the positional relationship between the hall and the car 5, the wheelchair user has a difficulty in getting on and off the vehicle, and thus gives priority to controlling the landing level of the car 5 for calling the wheelchair. For example, if the displacement of the upper car 5a is 3 mm and the displacement of the lower car 5b is 1 mm, and the lower car 5b responds to a wheelchair call, the speed control means 1 causes the landing position detector 13 to operate. From the operating point of (1), control is performed so that the vehicle travels (X + 1) mm to land.

Further, when it is determined in the processing step S53 that there is a car call, the upper and lower cars 5a and 5b are further added.
It is determined whether or not there is a call (S57), and the upper and lower cars 5
When the car is called by either one of the cars a and 5b, the landing correction is performed in consideration of the estimated number of people in the car 5 with car calls, as in the case of the single deck elevator. (S58).

On the other hand, if it is determined in process step S57 that there are both car calls of the upper and lower cars 5a and 5b, it is determined whether or not there is a special call, that is, a wheelchair call (S59). When the call includes a wheelchair call, the landing position of the car 5 having the wheelchair call is prioritized to perform the landing correction (S62). If the car calls of the upper and lower cars 5a and 5b are not the special calls but the general calls in the determination of the processing step S59, the upper and lower cars 5
For a and 5b, the number of people getting off is estimated separately (S6
0), the estimated floor displacement positions of the car are averaged to perform landing correction (S61).

As described above, according to the second embodiment, the landing control for the double deck elevator having two cars is performed so that the landing position error is averaged for a normal call. For the special call, the landing control of the called car is given priority, so that proper landing control can be performed.

[0044]

As described above, the elevator control apparatus according to the present invention controls the landing position in consideration of the amount of displacement of the car floor due to the load in the elevator car, and estimates the number of passengers getting off at the destination floor. Since it is reflected in the landing control, it is possible to properly control the deviation of the landing position level at the time of landing, and it is expected that the service to passengers will be improved.

Further, regarding the floor landing control of the upper and lower cars of the double-deck elevator, control is performed so that the landing position errors of the upper and lower cars are averaged, and the car called for a special call such as a wheelchair call Since the priority is controlled, the service to wheelchair users can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a landing position detector.

FIG. 3 is a processing flowchart showing processing contents of an elevator control device according to the first embodiment of the present invention.

FIG. 4 is an explanatory diagram of a car speed when landing control is performed in the first embodiment of the present invention.

FIG. 5 is a configuration diagram showing a second embodiment of the present invention.

FIG. 6 is a processing flowchart showing processing contents of an elevator control device according to a second embodiment of the present invention.

FIG. 7 is a configuration diagram of a conventional example of a single-deck elevator.

FIG. 8 is a configuration diagram of a conventional example of a double deck elevator.

[Explanation of symbols]

 1 speed control means 2 electric motor control means 3 car floor displacement calculation means 4 call calculation means 5 car 6 counterweight 7 pulse generator 8 hall call button 9 car call button 10 anti-vibration rubber 11 load detector 12 landing detection plate 13 landing Floor position detector 14 Electric motor 15 Car frame 16 Displacement amount correcting means

Claims (4)

[Claims] 1. A load detector for detecting a load in a car, a pulse generator for generating a pulse corresponding to a traveling distance of the car, and a landing which operates when the car reaches a predetermined distance in front of a target floor. Based on the position detector and the car floor displacement calculating means for calculating the car floor displacement amount based on the load inside the car detected by the load detector when the landing position detector operates, based on the nominal number of the cars The car call calculation means for estimating the getting-off personnel at the destination floor, the displacement amount correcting means for correcting the car floor displacement amount based on the getting-off personnel estimated by the car call calculating means, and the landing position detector are The speed at which a speed command corresponding to the distance to the target floor of the car is output based on the car travel distance detected by the pulse generator when operating and the car floor displacement amount corrected by the displacement amount correction means. With control means And an electric motor control means for controlling the electric motor for raising and lowering the car based on a speed command from the speed control means. 2. A load detector for detecting a load inside a car is provided for each of the two cars of a double-deck elevator in which two upper and lower cars are installed in an elevator car frame, and a pulse is generated according to a traveling distance of the car. Pulse generator, a landing position detector that operates when the car reaches a predetermined distance in front of the target floor, and a load detector for each of the two cars when the landing position detector operates A car floor displacement calculating means for calculating respective car floor displacement amounts based on the in-car load; a displacement amount correcting means for averaging the car floor displacement amounts of the two cars and outputting a car floor displacement amount; Based on the car traveling distance detected by the pulse generator when the landing position detector operates and the car floor displacement calculated by the displacement correction means, the distance to the target floor of the car is determined. An elevator control apparatus comprising: speed control means for outputting a corresponding speed command; and electric motor control means for controlling an electric motor for raising and lowering the car based on the speed command from the speed control means. 3. A car call calculation means for estimating a getting-off person for each of the two cars based on the number of calls of the car is provided, and the displacement amount correcting means is provided for each getting-off person estimated by the car call calculating means. Based on 2
It is characterized in that the car floor displacement amounts of the two cars are respectively corrected, and the car floor displacement amounts of the two corrected cars are averaged and the car floor displacement amount is output to the speed control means. The elevator control device according to claim 2. 4. The car so that when the car call computing unit detects a special call, the displacement amount correcting unit gives priority to a car that responds to the special call among the two cars, so as to be a landing position. The elevator control device according to claim 2 or 3, wherein the floor displacement amount is corrected.