JPS6133793B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an elevator car position detection device controlled by calculations of an electronic computer.

Detection of the car position is essential for elevator operation, and this is done by a floor selection machine.
There are various types of floor selection machines, but in recent years, machines that perform calculations using electronic computers have been adopted. In this case, it is necessary that the car position calculated by the electronic computer (hereinafter referred to as the car position signal) always matches the actual car position, and if there is a discrepancy between the two, it will not be possible to proceed smoothly. You can no longer expect to drive a car.

Therefore, it is necessary to correct the above-mentioned deviation at an appropriate time, and the above-mentioned correction is usually made when the car or the car position signal reaches the terminal floor.
That is, if the car is stopped at the top floor (bottom floor), the value of the car position signal is corrected to the top floor (bottom floor). Also, the car position signal is on the top floor (bottom floor).
If the value is shown and the car is stopped at an intermediate floor, the car is forcibly moved to the top floor (bottom floor) to correct the problem.

However, depending on the operating conditions of the car, the above conditions are not satisfied, and the car position signal and the actual car position do not match forever.

This invention is intended to improve the above-mentioned problem, and when the car position signal and the actual car position no longer match, it is possible to correct the difference between the two even if the car or the car position signal is not at the terminal floor. An object of the present invention is to provide a position detection device for an elevator.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In the figure, 1 to 7 are the floors from the 1st floor to the 7th floor, and the floor spacing is the longest between the 3rd floor 3 and the 4th floor 4, and between the 1st floor 1 and the 2nd floor 2, and between the 2nd floor 2 and the 3rd floor. 3 are the next shortest and equal to each other, and those between the 4th floor 4 and 5th floor 5, between the 5th floor 5 and 6th floor 6, and between the 6th floor 6 and 7th floor 7 are the shortest and equal to each other. 2A to 7A are cams installed a predetermined distance in front of 2nd floor 2nd floor to 7th floor 7 (the number of the code corresponds to the floor), 8 is from the elevator car, and 9 is from the switch installed in car 8. 10 is a converter that converts input into computer information; 11 is a central processing unit of the computer; 12 is an inter-floor distance coded (hereinafter referred to as inter-floor codes 12a to 12f); read-only memory (hereinafter referred to as
ROM), the floors where you can run at full speed when driving on each floor are "02", and the floors where you can run at full speed when you skip one floor (distance between floors is two, excluding between 3rd floor 3 and 4th floor 4). is "01", and "00" is the floor where you can run at full speed by jumping two floors (same distance between floors is 3). For example, in an elevator with a rated speed of 105 m/min, the distance between floors is 3100 m/min.
If it is less than mm, it will be "00", if it is 3100 mm or more and less than 6100 mm, it will be "01", and if it is 6100 mm or more, it will be "02". In the example, the floor codes 12a and 12b for the 1st floor 1 and the 2nd floor 2, the 2nd floor 2 and the 3rd floor 3 are "01", and the 3rd floor 3 and 4
The floor code for floor 4 is "02", 4th floor 4 and 5th floor 5,5
The floor codes for the 5th and 6th floors 6 and the 6th floors 6 and 7th floors 7 are "00". That is, the minimum floors between which the vehicle can run at full speed are 1st floor 1st floor - 3rd floor 3, 3rd floor 3rd floor 4th floor 4th floor, and 4th floor 4th floor 4th floor 7th floor. Note that the ROM 12 also stores a deceleration command value corresponding to a change in the distance from the car 4 to the scheduled stop floor (hereinafter referred to as remaining distance) and position data of the terminal floor. 13 is a readable/writeable memory (hereinafter referred to as RAM) that stores data in storage addresses; 14 is an address bus;
Bus line of data bus etc., 15 is car operation line, 16
is the speed command signal.

Next, the operation of this embodiment will be explained.

Now, if car 8 is on the 3rd floor 3 and a call for the 4th floor 4 is registered, the interfloor code 12c is stored in ROM1.
2, determines to run at full speed, and starts running according to the speed command signal 16. Regarding the speed command signal 16 at this time, on the acceleration side, the central processing unit 11 calculates and outputs an acceleration command value that increases with time, and after reaching the rated value, continues to output the rated value. When the car 8 reaches the deceleration preparation point P ₁ a predetermined distance before the fourth floor 4 and the uphill deceleration preparation point detector 9 engages with the cam 4A, the detector 9 emits an output. When the central processing unit 11 detects this, remaining distance calculation is started and the deceleration command value corresponding to this remaining distance is calculated.
Read from the ROM 12 and output. the result,
The speed command signal 16 has a shape as shown in FIG.

Next, the car position signal and the actual car position no longer match, and even though car 8 is stopped on the second floor 2,
The car position signal calculated by the central processing unit 11 is 3.
Suppose it was on floor 3. At this time, if a call occurs on the fourth floor 4, the car 8 runs from the second floor 2 to the third floor 3. The central processing unit 11 reads the inter-floor codes 12c for the 3rd floor 3 and the 4th floor 4, decides to run at full speed,
A speed command signal 16 for full speed is calculated and output. However, since the actual distance between floors is such that full speed travel is not possible, normal deceleration and landing cannot be expected. That is,
If the car position signal and the actual car position match, the speed command signal 16 should be at the rated value when the car passes the deceleration preparation point _P1 of the called floor while running at full speed. However, in the above case, the car position signal and the actual car position do not match, so car 8 is
When the detector 9 reaches a predetermined distance before the floor 3, the cam 3
The value of the speed command signal 16 when engaged with A does not necessarily reach the rated value. In this way,
When the detector 9 operates, if the speed command signal 16 is at point _P2 in the accelerated state, it is detected that the car position signal and the actual car position do not match. In addition, when the inter-floor code "01" is relatively long, such as the distance between the second floor 2 and the third floor 3, the speed command signal 16 when the detector 9 operates is the point at which the acceleration is completed.
It is possible that it has become _P3 . At this time,
The time _t1 from when the rated value is reached is counted, and if it is less than a predetermined value, it is detected that the car position signal and the actual car position do not match.

Now, when it is detected that the car position signal and the actual car position do not match while the car 8 is running, the process moves to one of the following operations.

A 3rd floor 3 (Central processing unit 11 detects 4th floor 4)
After landing on the floor, if there is no car call, the car will run to the terminal floor. If there are car calls, the car will run to the terminal floor after all car calls have been answered.

B. After landing on the third floor, the train travels to the last floor at a speed lower than the rated speed, stopping at each floor.

C. Car 8 is made to go directly to the terminal floor without slowing down.

After landing on a floor where normal deceleration is possible (floor 4 in the example), (a) If there is no car call, travel to the terminal floor (b) If there is a car call, run to the terminal floor after responding (c) ) Travels to the terminal floor at a speed lower than the rated speed When the car 8 stops at the terminal floor, the terminal floor data is read from the ROM 12 and the contents of the current floor address in the RAM 3 are corrected. Now, the car position signal and the actual car position match exactly, and from now on, the car position signal will match the actual car position.
performs smooth operation.

In the embodiment, the case of uphill traveling has been described, but it is clear that the same can be applied to downhill traveling.

As explained above, the present invention allows a car to respond to a car call if the speed command signal is in an acceleration state or a predetermined time has not elapsed after the end of acceleration when the car reaches a predetermined distance before the scheduled stop floor. After a predetermined operation such as not allowing the car to go directly to a called floor, the car is made to go directly to the terminal floor, and the car position signal is made to match the terminal floor position.

As a result, even if there is a discrepancy between the car position signal and the actual car position when the car is on an intermediate floor, this can be corrected and smooth operation of the car can be expected.

[Brief explanation of the drawing]

FIG. 1 is a configuration explanatory diagram showing one embodiment of an elevator position detection device according to the present invention, and FIG.
The storage state diagram of the read-only memory 12 is shown in the figure, and FIG. 3 is an explanatory diagram of the relationship between the car position and the speed command signal. 1 to 7...1st to 7th floors, 2A to 7A...
Cam, 8...Car, 9...Upward deceleration preparation point detector, 11...Central processing unit, 12...Read-only memory, 13...Writable and readable memory, 16
...Speed command signal. In addition, the same parts in the figures are indicated by the same symbols.

Claims (1)

[Claims] 1. A speed command signal is calculated from a car position signal calculated by an electronic computer and distance data between each floor, the car is operated according to this speed command signal, and the car position signal is If there is a difference between the actual position of the car and the actual position of the car, the car is forced to go straight to the terminal floor and the car position signal is corrected to the position of the terminal floor. A deceleration preparation point detector that operates when the deceleration preparation point detector reaches a predetermined distance before the deceleration preparation point, and when the deceleration preparation point detector is activated, the speed command signal is in an acceleration state or a predetermined time has not elapsed after the end of acceleration. What is claimed is: 1. A position detection device for an elevator, comprising: a detection means for detecting a car; and an operation circuit for shifting the car to the forced operation after a predetermined operation when the detection by the detection means is performed. 2. The elevator position detection device according to claim 1, wherein the predetermined operation is to cause the car to go straight to the terminal floor after responding to all car calls. 3. The position detection device for an elevator according to claim 1, wherein the predetermined operation is to cause the elevator to go directly to the terminal floor without stopping at the called floor. 4. The elevator position detection device according to claim 1, wherein the predetermined operation is to run the elevator to the terminal floor while stopping at each floor. 5. The position detecting device for an elevator according to claim 1, wherein the predetermined operation is to move the elevator directly to the terminal floor after landing on a floor where the elevator can normally decelerate and stop.