JPS5842577A - Controller for deceleration at terminal stair of 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 relates to an improvement in a control device for decelerating an elevator at a terminal floor.

Usually, the speed of an elevator car is controlled according to a regular speed command signal. However, if an abnormality occurs in the normal speed command signal and normal deceleration and stopping become impossible, the car will overshoot the top or bottom floor. There is also a risk that the high or counterweight may collide with the shock absorber, causing a serious accident. Therefore, generally, in addition to the normal speed command signal, a terminal floor deceleration command signal is set at the top or bottom floor to forcibly decelerate the car. This is shown in FIG.

In the figure, vrlrj is a normal speed command signal determined from normal car acceleration and deceleration, and v8 is a normal speed command signal vn.
This is the terminal floor deceleration command signal which always has a higher value than the deceleration point A and which decreases at a constant deceleration when the car reaches the deceleration point A.

That is, the car runs according to the normal speed command signal vnK, and when it reaches the deceleration point A, it decelerates and stops as the normal speed command signal vn decreases. Regular speed command signal ■. In order to obtain good riding comfort, the slope at the beginning of deceleration is set to be gentle as shown in Fig. 1. Therefore, the normal,
When the speed command signal v0 is normal, the maximum value v8° of the terminal floor deceleration command signal ■8 is set to v8, so that the maximum value v8° of the terminal floor deceleration command signal ■8 is compared to the maximum value vno of the normal speed command signal vn. , has a very high value. Moreover, the area of the shaded part in FIG. 1 represents the deceleration distance from the deceleration point A to the stop.

Next, as shown in FIG. 2, the car passes the deceleration point A, an abnormality occurs in the normal speed command signal vn at point J, and at point B the normal speed command signal vn changes from the terminal floor deceleration command signal V. If the normal speed command signal vn is switched to the terminal floor deceleration command signal V, the car is thereafter decelerated accordingly. After all, it travels according to the command signal that connects EFG) (D. At this time, the deceleration distance after deceleration point A is:
The deceleration distance is represented by the area of the shaded portion in FIG. 2, and is longer than that in the case of deceleration according to the normal speed command signal vn in FIG. 1. Therefore, the car may not be able to stop in the area where the door can be opened and closed on the terminal floor (usually within about 200 mm above and below the floor surface). As a result, the door may not open on the terminal floor, trapping the passenger inside the car. ◇This invention improves the above problem, and when the normal speed command signal is higher than the terminal floor deceleration command signal, the terminal floor deceleration occurs. The purpose of the present invention is to provide a terminal floor deceleration control device for an elevator, which securely lands a car on the terminal floor by increasing the deceleration rate of a command signal.

Hereinafter, one embodiment of the present invention will be explained with reference to FIGS. 31 to 8.

In Figures 3 and 4, ill is the elevator car, (2
1 is the counterweight, (3゛・hakagoit) and the counterweight (the royal family that connects 2+), (4) is the sheave of the hoisting machine around which the main rope (3) is wrapped, (5) is the rope The hoisting motor that drives the car (4), i61 Viili motor (directly connected to 51, and the speed expressed by a number of pulses proportional to the speed of the car fil, the speed detector that emits No. 13 Vt, (7) is normally A normal speed command generating device (81) which generates a normal speed command signal vn used for acceleration/deceleration of The terminal floor deceleration point switch (9) is a terminal floor deceleration command generator configured by a microcomputer, (10)
1 is an emergency travel judgment device that reads the normal speed command signal vn and the terminal floor deceleration command signal v8 as input and determines whether or not it is in an emergency travel state, and SKI is its output, which is rL in normal times and rHJ in emergency travel. The emergency running signal, (11) reads the emergency running signal 61El as an input and sets the terminal floor deceleration setting device, 8 and 2 are the output terminal floor deceleration once signal, θ2) is Terminal floor deceleration signal 5IC
2 and the terminal floor deceleration point signal (8a) as input, and a terminal floor deceleration command generator that generates the terminal floor deceleration command signal VS updated at regular intervals, (Ii4+ is the normal speed command signal V, and the terminal floor deceleration point signal VS). Speed command switch that selects either command signal VS and outputs all speed command signals V, 04
) is a booster that outputs a speed command signal V and a deviation signal V of the speed signal V, and IIfi'l is a delay control device that controls the speed of the electric motor (5) by inputting the deviation signal v0! , (+6
1 is a microcomputer central processing bag fit (hereinafter referred to as C
PU), 07) is the normal speed V signal Vnf CP
U (input converter to take into 101, (lsl is C!PU
(Output converter that outputs the signal from 16+ as the terminal floor deceleration command signal V, (I9) ii Read-only memory (hereinafter referred to as ROM) in which the operating procedures shown in Figures 5 to 1 are stored as a program , - stands for read/write memory (hereinafter referred to as RAM) that temporarily stores data such as calculation results.
), (21) is the signal line that connects each of the above equipment 0 [bonds] in Figure 5. 4 to (48) are the operating procedures of the terminal floor deceleration setter (10), and (50) to (55) in FIG. 7 are the operating procedures of the terminal floor deceleration command generator 01).

Next, the operation of this embodiment will be explained.0 In step (30), it is determined whether the initial value of the terminal floor deceleration command signal v8 stored in the ROM (II) has been read.1If it has not been read, it is checked in step (311). Read O If it has been read, proceed to step Z. In step 1, read the terminal floor deceleration command signal 8 and the normal speed command signal V. In step (c), compare the above two Buddhist symbols V and v311r. , vIl>vs
If not, that is, if it is normal, the emergency running signal SE1 is set to rLJ and written to RA11N2[) in step (34). If vn > v8, that is, if it is abnormal, set the procedure (rope emergency running signal SK1 to r) IJ and RA
Next, in step -, it is determined whether the initial value of the terminal floor deceleration signal 8E2 stored in RoJl has been read, and if it has not been read, the terminal floor deceleration concealment is performed in step (41). The initial value α of the signal SE2 is set. If it has been read, proceed to step (42). The emergency running signal 8El is read with the hand +1jil (42), and it is determined whether it is rHJ with the hand +1jil (43). Emergency running signal SKI is rH
If it is not J, that is, if it is normal, the terminal floor deceleration signal SE2'iRAM (2fl.) is written in step (45).

If rHJ, the terminal floor deceleration signal SE is determined in step (44).
2 and set it to β, and in step (45) set it to RAM.
(Write 2QIK.

Next, in step (50), it is determined whether the initial value of the terminal floor deceleration command signal v8 stored in ROMQ91 has been read, and if it has not been read, it is read in step (51). If so, proceed to step (52). In step (52), it is determined whether the terminal floor deceleration point A has been passed, and if it has not been passed,
The above initial value in step (55)? RAMC211). If the deceleration point A has been passed, the terminal floor deceleration signal SE2 and the terminal floor deceleration command signal vs are read in step (53). Then, in step (54), the data of the terminal floor deceleration command signal VB is set corresponding to the value α-β of the terminal floor deceleration signal 8E2, and in step (55) this is written to the RAM-. In this way, the written terminal floor deceleration command signal v8 is outputted via the output converter θ8j and given to the speed command switch (+4).
is the normal speed command signal■. and the terminal floor deceleration command signal vs, the lower value is the speed command signal V.

Output as .

The above operation is illustrated in FIG.

When the normal speed command signal vrl is normal, the emergency running signal SKI is "L", so the terminal floor deceleration signal 8E2 is set to α, and the terminal floor deceleration command signal v8 decreases with a constant deceleration. This becomes a command signal that connects the MNHD. On the other hand, the normal speed command signal vn has a lower value than the terminal floor deceleration command signal v8, and becomes a command signal that connects EFGPI, and this becomes the speed command signal V. This signal vP
and the speed signal vt are collated by the adder (I4), and the deviation signal (2) is given to the speed control device (05) to control the electric motor (
The speed of car (1) is automatically controlled and the car (1) is operated normally.

Next, when the car reaches point J, which has passed the deceleration point,
Assume that an abnormality occurs in the normal speed command signal vn and it does not decrease, and vn>vs at point B. Here, the emergency running signal S
Since KI becomes rHJ, the slope of the terminal floor deceleration command signal VB corresponds to β after point B, and the slope becomes steeper than before, and becomes a command signal connecting MNHPO -8. Since vn>v8 after aP, the command signal is a combination of speed command signal v, Fi terminal floor deceleration command signal vs, and EFGHPO. The speed of the car (ti) is controlled according to this command signal, and after response B, the car (ti) is decelerated by slightly increasing the deceleration rate.In this case, by increasing the deceleration rate, the area surrounded by HGP and PCI 2 to the terminal floor deceleration signal 8 so that the areas are equal.
By setting , the same landing accuracy as during normal operation can be obtained even during emergency operation.

9 and 10 show other embodiments of the invention. Note that FIGS. 3 to 5 and FIG. 7 are used as they are.

In Figure 9, (411j ~(43), (45) ~(
49) Vi terminal floor deceleration setter (11) operating procedure 0 In Fig. 8, if an abnormality in the normal speed command signal vn occurs before point B, the area HGP will be smaller than the area PCI, so During emergency travel, the heel (1) stops before reaching the terminal floor. The embodiments shown in FIGS. 9 and 10 are improvements on this.

Steps up to (43) are the same as in Figure 6, 0 move 1 @.

In (43), if the emergency running signal 8E1 is rHJ, the hand +
1j (46) is the terminal floor deceleration command signal vs and RoJ9
), the predetermined value VI3 is read. Procedure (47
), compare the terminal floor deceleration command signal VB and the predetermined value v81,
If v8>vsl, the terminal floor deceleration signal SBZ is changed and set to β in step (4th day). If V, > VB, the terminal floor deceleration signal 8 is set to 2.

The above-described operation is illustrated in FIG. 1O.

At point B, the terminal floor deceleration command signal vs has a steep slope and decreases until it reaches a predetermined value vs1. Terminal floor deceleration command signal v8
When reaches the predetermined value vs, the terminal floor deceleration signal SR2 becomes zero, so the terminal floor deceleration command signal v8 thereafter becomes the predetermined value v.
When s1 is maintained and the speed (1) reaches the landing level of the terminal floor, the terminal floor deceleration command signal V becomes zero. Therefore, the basket ill is EFGHPQRC! The speed is controlled according to the command signal connected to the In this case, the area HGP and the area P
If the QRO values are set to be equal, the landing accuracy with respect to the terminal floor landing level will be significantly improved even during emergency running.

FIGS. 11 and 12 show other embodiments of the invention.

In addition, FIG. 4, FIG. 5, and FIG. 7 are used as they are.

In Figure 11, the speed signal V is the terminal floor deceleration setting device (11)
It is the same as in FIG. 3 except that it is input to .

In FIG. 12, (70) to (82) are the operation procedures of the terminal floor deceleration setter (river).

This embodiment improves the accuracy of landing on the final floor level during emergency travel.

Step (70) I (71) is step (40) in Figure 6
This is similar to l (41). Determine whether the deceleration point A has been reached in step (72), and if it has not passed, proceed to step ('73).
Read the distance from the deceleration point A to the final floor landing level (hereinafter referred to as the remaining distance) from the ROM (19), and
(20) and initialize it.

If the deceleration point A has been passed, the process proceeds to step (74). Steps (7)
In step 4), the number of pulses read from the speed detector (6) during one sampling is counted. In step (75), the amount of movement of the heel (1) during one sampling period is calculated, and in step (76)
) to correct the initial value of the remaining distance above and calculate the remaining distance at that point γ? Then, it goes into RAM (2o). In step (Iku), determine whether the emergency running signal SEI is rHJ, and
If it is not HJ, if the power is normal, then follow the procedure (8).
The terminal floor deceleration signal SE2 initialized in 2) is stored in the RAM.
(21: If the 0 emergency running signal SEI that is applied to
Load the remaining distance corrected above in step 3) and proceed to step (79).
and the speed signal V.

(i-count. Then, in step (80), calculate the deceleration necessary to accurately land on the floor even during emergency driving, and in step (81)
) to change the terminal floor deceleration signal SE2, and write it in step (82). In this way, the terminal floor deceleration signal SE2
The remaining distance and speed signal V at landing level.

From this, the required deceleration of the terminal floor deceleration command signal (8) is calculated and set. This significantly improves the accuracy of landing on the terminal floor level during emergency travel.

vAs explained above, in this invention, when the normal speed command signal that commands the speed of the car becomes higher than the terminal floor deceleration command No. 4H, the deceleration level of the terminal floor deceleration command signal is increased, so that emergency running is prevented. The car can be accurately landed on the terminal floor even when passengers are asleep, eliminating the problem of trapping passengers in the car.

[Brief explanation of the drawing]

1 and 2 are explanatory diagrams of the operation of a conventional elevator terminal floor deceleration control device, FIG. 3 is a block diagram showing an embodiment of the elevator terminal floor deceleration control device according to the present invention, and FIG. Figure 3 is a block diagram of the terminal floor deceleration command generating device, Figure 5 is a flowchart of the operation of the emergency travel determination device in Figure 3,
FIG. 6 is a flowchart of the operation of the terminal floor deceleration setting device, FIG. 7 is a flowchart of the operation of the terminal floor deceleration command generator, FIG. 8 is a diagram explaining the operation, and FIG. 9 is a flowchart of the operation of the terminal floor deceleration command generator. FIG. 6 is a flowchart showing the operation of the embodiment, and FIG. 1O is an explanatory diagram of the same operation. FIG. 0ill...Elevator car, (5)...Hoisting motor, (7)...Normal speed command generator, (8)...
・Terminal floor deceleration point switch, (9)...Terminal floor deceleration command generator, (10)...Emergency running judge, (l...
・Terminal floor deceleration setter, (12)...Terminal floor deceleration command generator, (131...Speed command switch, -θ group...
Speed control device. Note that the same parts in the figures are indicated by the same reference numerals. Agent Shin Kuzuno - (1 other person) Figure 3 Figure 4 Figure 5 Figure 6r21 714 Figure 8' I-1 Leap Figure 9 Figure 10 Figure 11 Figure 12 Procedural amendment (voluntary) 4'5'J'l' Office Rino Palace 1, Display of II group Patent application 1984-137418
No. 2, Title of the invention Elevator terminal floor deceleration control device 3, Sleeve 11: Person 5, Detailed description of the invention in the list of items to be amended, Column 6, Description of the contents of the amendment amended as follows. do.

Claims (1)

[Claims] A normal speed command No. 16 that commands the speed of the car and a terminal floor deceleration command signal that is higher than that in normal times and decreases at a predetermined deceleration when approaching the terminal floor are set, and the normal speed command signal is set to When the deceleration command signal becomes slower than the deceleration command signal, the normal speed command signal is switched to the terminal floor deceleration command signal to decelerate the vehicle, and when the normal speed command signal becomes higher than the terminal floor deceleration command signal, A terminal floor deceleration control device for an elevator, comprising a terminal floor deceleration command generating device that increases the deceleration rate of the terminal floor deceleration command signal above the predetermined value.