JPS5826784A - Method of controlling elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses a counter to count the pulses generated as the car travels, and a car position detector installed near each floor to detect the actual position of the car. The present invention relates to an elevator control method for controlling an elevator while correcting car position data by inputting a detector signal into a microcomputer.

In order to detect the position of an elevator car, including when landing on the floor and while the car is moving, it is necessary to count the lass that occur as the car moves, and then add or subtract the counted value to a value that indicates the absolute position of the car. There are known methods for detecting

Fig. 1 is an explanatory diagram showing the configuration of a conventional car position detection installation, in which a rotary plate 2 with a plurality of holes straddling the same circumference is installed on the shaft of a drive unit that drives a car via a steel cable. On the other hand, a detection section 3 containing a light emitting diode and a photodiode is provided at a position opposite to the hole in the rotary plate 2, so that the detection section 3 generates a pulse corresponding to the amount of movement of the car I. . This ji! 1 car, the length of the basket is exactly 105m
# Rotating plate 2 so that it generates a ``zerus'' every time it moves.
diameter.

The location and spacing of the holes are determined.

Thus, the one-rotation plate 2 and the detector 3 form a noise generator that generates noise as the car moves up and down.
If this pulse is counted by the nozzle counter 4 while distinguishing between the ascent and descent of the car I, the position of the car I can be known from the counted value. Note that the initial value of the counter 4 that counts the number of cars may be set to zero when car l is located on the lowest floor, or it may be set to a certain level with the first floor as the reference, and the counter 4 may be set to zero when car l is on the lowest floor. It may be increased or decreased accordingly.

By applying the thus-obtained count of the pulse counter 4 to the microcomputer 5 as car position data, the microcomputer 5 controls the elevator according to the position of the car, including when landing on the floor and while the car is running. It is carried out.

However, with this car position detection installed, for example, when the car is stopped and the heel shakes up and down due to passengers getting on and off, the rotary plate 2 rotates and extra pulses that cause errors are generated. However, a discrepancy may occur between the actual position of the car 1 and the count value of the pulse counter 4.

Therefore, in order to prevent this situation, it is necessary to close or open the door (hereinafter, turn on the closed door) at a position about ten minutes away from each floor.
Provide a limit switch that operates (open to off and 100);
The microcomputer 5 monitors whether the limit switch is turned on or off, and when the limit switch is activated, the lowest floor, which has been previously written in the continuous output memo 17K in the microcomputer 5, is used as a reference. A method was adopted in which the floor height data obtained was forcibly entered into the pulse counter 4 as car position data to correct the deviation in the car position data as described above.

However, such correction of the car position data is only performed at the time of departure of the car, even if a stop switch is operated near the floor of the first passing floor.

〃・Car basket position data was not corrected.

Therefore, as the distance traveled by the crab from when it starts to when it stops increases, the difference between the actual position of the car and the needle value of the arm counter 4 also increases, and a deceleration command is issued without this difference being corrected. This resulted in a one-point landing error.

Another disadvantage is that the microcomputer 5 must continue to monitor the entire time from the departure of the car until the limit switch is activated, and other controls cannot be performed during this time.

The present invention has been made to eliminate the above-mentioned drawbacks.
When a switch installed near each floor is activated, the microcomputer is programmed with ILJ, and the pulse counter count value is corrected based on the floor height data corresponding to each floor, thereby suppressing the landing error to a sufficiently low level. The purpose of this study is to develop an elevator control method that allows the microcomputer to be used for other processing while the car is stopped.

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 2 shows #II configuration of car position data correction for applying the elevator control method according to the present invention!
In the lock diagram, the same reference numerals as in Fig. 1 indicate elements that are the same or have the same effect, and other
A detector that detects the operation (or reconnaissance) of the limit switch 111m limit switch 14 attached to the heel and IK and adds the microcomputer 5KPM, 16
are provided on each floor.

The limit switch 14 is turned off a dozen or so inches before the car 1 reaches its normal stopping position on the floor, and the hoistway wall 1 is turned off in order to turn it into a ten-and-a-half position S at a position a dozen or so inches past the normal stopping position.
The auxiliary plates attached to 7 are shown respectively〇 On the other hand, 6 which makes up the lcrocomputer 5 is the central processing unit (CPU), and 7 is the write/read memory (
RAM), 8tlX continuous memory (ROM), 9 is input/output control unit (DCU), 10 is memory control unit (MCU), 1ltlj person's luxury 7a.

]2 is the output non-fa, 13c interrupt latch unit (I
NTU).

The operation of the car position data correction iut configured as described above will be explained below with reference to the flowchart f in FIG. 3 showing the interrupt processing procedure.

Now, if the heel of the elevator is rising in the direction indicated by the arrow in the figure, the auxiliary shaft attached to the hoistway 917
16, the light switch 14 switches from the on state to the off state a dozen or so before reaching the predetermined stopping position on the floor, and furthermore, at the point where it moves upward from the predetermined stopping position. It will switch from the off state to the on state. The detector 15 detects when the limit switch 14 switches from the OFF state to the ON state, that is, the rise of the current flowing through the limit switch 14, and sends a signal indicating the exact position of the car L to the microcomputer 5. I
When transmitted to the NTU 13, the CPU 6H stops normal routine processing and performs interrupt processing.

As shown in the 70-chart in FIG.
1 and the value read by CPU 6 through .

The floor height data corresponding to the position where the limit switch 14 switches from the OFF state to the ON state is compared with the floor height data written in the ROM 8 in advance with respect to the lowest floor.

It is determined whether the absolute value of the difference is less than a certain value set as an allowable range, and if it exceeds a certain value, there is a significant error in the counting of 9 ruses that occur as the car runs. As a matter of fact, the first shift of a counter (not shown) is incremented by one (data increment).

Further, the floor height data written in the ROM 8 is output to the pulse counter 4 via the output sofa 12 to correct the counted value. On the other hand, if the fixed value determined as the rf capacity range is not exceeded, the above-mentioned data increment is not performed, and the count value of the guru counter number is corrected based on the floor height data in the ROM 8.

By correcting the count value of the ie counter 4 in this way, the interrupt processing is completed and the process returns to the original routine.

On the other hand, the counter whose data is incremented due to a significant error in the count @ of pulses generated as the car runs is first cleared, and the count value of the counter 4 and the 80th floor height data in the ROM are Each time the difference exceeds a certain value, it increases by l, and when the number exceeds the set value, an inspection signal is generated to prompt the elevator to be inspected.

In this way, the above-mentioned interruption is applied to each passing floor through which car 1 passes.

Since the count value of the pulse counter 4 is corrected each time, even if the traveling distance of the car 1 increases, a deceleration command is issued at an appropriate position and the landing gear is operated accordingly, so that when one passenger gets on and off the car, a deceleration command is issued at an appropriate position. ), even if the count value of the counter 4 increases or decreases, the count value will be instantaneously corrected. That is, by the time an interrupt is applied to the microphone four computer 5, the microcomputer 51-
Others (2) can be used for ItlJ Misaki.

In addition, in the FGL example above, a limit switch was used to detect the overloaded coins in the car, but even if the terminal switch, forced stop switch, or spiral switch is used, the microcomputer will not be interrupted. be able to.

Further, in the above embodiment, a car-mounted Mitswitch and an auxiliary board were provided on the hoistway wall, but IJ Mitswitches may be provided on the hoistway wall near each floor to detect the position of the car. , or kata. The position correction can be performed not only in the vicinity of each floor but also in a specific position, in a manner similar to that of the above embodiment.

Sara K again. In the above embodiment, the rise of the current flowing through the limit switch is detected and the count value of the counter indicating the corner position is corrected. However, it is not limited to the rise of the current. Even if a falling edge is detected, it is possible to perform corrections such as this and all <ul, li.

As is clear from the explanation, 1. According to the elevator control method of the present invention, the pulses emitted tp as the car runs are counted, and this counted value is scattered into the microcomputer as car position data. So H:ti 4 @
The landing error of the car and the car can be suppressed to a sufficiently low level, and the microcomputer can be used for other processing while the car is stopped.

[Brief explanation of drawings]

Fig. 1 shows a conventional elevator control method (a block diagram showing the configuration of an adopted car position detection device).
FIG. 3 is a block diagram showing the configuration of a car position data correction device for adjusting the car position data, and FIG. 3 is a flowchart showing the procedure of interrupt processing used in the present invention. ■... Car, 2... Rotating plate, 3... Detection unit, 4...
...Pulse sword Tsunme, 5...Microcomputer. 6...Central processing unit, 7...Continuous writing memory, 9...I/O control unit), 10...Memo IJ ttltj snoring unit, 11...Input cut 7a, 12 ... Output power γ, 13... Interrupt latch unit, 14... 1J Mitsubishi switch, 15.
...Detector, 16...Auxiliary plate 17...Elevation w11
1゜Dispatch agent Kiyoshi Inomata

Claims (1)

[Claims] 1. Occurs as the car runs. 4 russ by a counter, the actual position of the car is detected by a car position detector installed near each floor, and the counted value of the counter is used as corner adhesion data, and the signal of the car position detector is used as the car position. Each application is applied to a microcomputer as a personal code for data correction, and the microcomputer uses floor height data stored in an internal memory in advance with reference to a predetermined floor, the counted value of the counter, and the signal of the car position It detector. In an elevator control method for controlling an elevator, the car position detector interrupts the computer every time each of the car position detectors generates a signal, and the car position detector generates an output signal. 2. A control method for an elevator that involves correcting the counted value of the counter using floor height data corresponding to the respective floor height data. 1. Compare the car position data sent from A method for controlling an elevator according to item 1.