JPS5811482A - Controller for 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 This invention relates to an improvement in a device for controlling an elevator.

Generally, the speed of an elevator is controlled by a normal speed command value determined according to the distance between the car position and a designated floor position. In addition, the terminal deceleration command value has a value according to the distance to the top floor and the bottom floor, that is, the terminal floor, decreases according to the distance in the region of the terminal floor, and has a value higher than the normal speed command signal. V, is generated. This is shown in FIG.

In the diagram, (1) is the 1st floor (lowest floor), (2) to (8) are 2
floor to 8th floor, (9) is the 9th floor (#L upper floor), vPl is the normal speed command value when traveling at the rated speed (long/short - traveling), v
, 2 is the normal speed command value (hereinafter v, 1゜v,
2 is collectively referred to as V.).

That is, when an abnormality occurs in the normal speed command value V, and the value becomes equal to or higher than the terminal floor deceleration command value 71, the speed command value is switched to the terminal floor deceleration command value V.

By the way, in recent elevator car position detection, the car position is electrically determined from the rotation angle of the hoist's drive sheave or speed-governing wheel. K, and K is designed to detect continuously and precisely. This is a so-called relative position detection method that detects the car position by detecting the amount of movement of the car. There is a high possibility that the car position will be incorrectly detected due to slippage between the driving sheave and the main rope, slippage between the governor wheel and the governor rope, and external electrical noise. . In addition, for those that detect the car position electrically, in the event of a power outage, there is a possibility of storing the car position using an uninterruptible power source such as a battery. There is also gender. However, abnormal operation caused by these erroneous car position detections is caused by the above terminal deceleration command value V. After the car is safely stopped at the terminal floor (9), the detected car position is changed to the terminal floor. By automatically correcting (9), it is possible to continue normal operation again. However, it is difficult to distinguish abnormal operation from failures that cannot be automatically repaired, such as failures in other elevator control circuits, such as the speed command generation circuit or the heel position detection circuit itself. Therefore, there is a safety problem in continuing to operate a car that has decelerated and stopped at the terminal floor (9) based on the terminal deceleration command value V.

The present invention aims to improve the above-mentioned problems, and provides an elevator control device that does not unnecessarily stop operation in the event of a failure that can be automatically restored, but can safely stop operation in the event of a failure that cannot be restarted. With the goal.

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

In Figures 2 and 3, (1A) to (9A) are on the 1st floor (1)
~The landing button provided at the landing on the 9th floor (9), (Kawa means the elevator car, H means the same thing), - Hakato (
The main rope that connects the comb and the comb θno, (I41 is the hoist installed in the machine room, (1 is the drive installed on the hoist 06) and the main rope is wrapped around it. Sheave, Q10 is sheave O
C+ timing bell) (1?) t-: The car (U) is driven a predetermined distance, e.g. 1
A movement amount detector that emits a movement amount pulse signal (16a) for raising and lowering separately every time it moves 0 mm, (18) is a drive m*IJe1 circuit that drives the hoisting machine (14+), (installed in IIFi and (lυ) 4 is the destination floor button (1) is the call signal that is emitted when pressing the transport and landing buttons (IA) to (9A), 12 is the top floor of the hoistway (9)
The upper cam (1115) is fixed to the upper cam, which is also fixed to the bottom floor (1), and the lower cam (1115) is fixed to the bottom floor (1), and rotates when engaged with the upper cam or the lower cam. It has a roller arm, and depending on the rotation angle of this roller arm, the top floor (9
) or a terminal deceleration command voice device that emits a terminal deceleration command value v6 according to the distance to the lowest floor (1), Hakato (1)
13K installed detection pieces, (2) is the top floor detector that is installed on the top floor (9) and emits the top floor detection signal (25&) when facing the detection piece -, (E) is on the bottom floor (1) The lowest floor detector that is installed and also emits the lowest floor detection signal (26a), (support) is the processing circuit, ■Heel position correction device, 01) is the reference position (here, lower than the lowest floor (1)) The top floor position memory stores the distance from the top floor (position 9) to the top floor (9) as a value corresponding to the number of movement pulses, and the top floor position memory (2) also stores the distance to the bottom floor (1). The lowest floor position memory, facing and sardines are AND gates, (to) is DC normal power supply,
(To) is an emergency power source such as a battery, (B).

(to) is diode-F, :, ■ is from the above reference position (
The distance to the river! A car position detector that outputs a car position signal (39a) corresponding to the distance calculation pulse number of the pulse (16a); 40c); (41) is an AND gate; (42) is a speed command generation circuit that generates a normal speed command signal V;
3) is a comparator that compares input A and input B, and when input A>input B, the output (43a) is rHJ and otherwise rLJ. (44) is a comparator that inputs input A when input G is rLJ. When G is rHJ, each input B is output (44a
), (445) is an OR gate, (445) is an OR gate, (
46) is an AND gate, (47) is a counter that counts the number of times when input O becomes rHJ, and when input R becomes rHJ, the contents are reset to zero. (48) is a value that corresponds to two inputs. Then, the discriminator outputs "H", and (49) is an alarm installed in a manager's room or the like.

Next, the operation of this embodiment will be explained.

Under normal conditions, the output of the counter (47) is zero, and the output of the discriminator (47) is zero.
Since the outputs of 8) are rI, J, the AND gate (41) is open. Further, the car position detector (2) is supplied with a normal power supply (via a diode (b)), adds and subtracts movement amount pulse signals (1, 6a), and generates a car position signal (39a). Therefore, the operation control circuit (4
G outputs a start command signal (40a), a driving direction signal (40b), and a deceleration command signal (40c) to the speed command generation circuit (42) based on the car position signal (39a) and the call signal. A speed command generation circuit (42) outputs a normal speed command value V up to the scheduled stop floor having a predetermined pattern shape. At the same time, the terminal deceleration command generating device t(e) generates a terminal deceleration command value V according to the distance to the terminal floor (9), as shown in FIG. However, if the car position signal (391L) is outputting something equivalent to the actual car position, the terminal deceleration command signal 1 is always the normal speed command value V, which is also large, and the output of the comparator (43) (
43a) is rLJ. Therefore, the selector (44)
selects the normal speed command No. i6 V as the output (44a), continues to issue the speed command value to the drive control circuit α, and the car (
11) performs regular inter-floor operation.

When the car (kawa) approaches the top floor (9) due to the call of the top floor (9), the terminal deceleration command generator (G) and the upper camshaft engage, and the roller arm rotates, so the terminal deceleration command value V decreases according to the distance to the terminal floor (9). The signal (25a) is “H
-1, and the output of OR game (45) also becomes rHJ. At this time, since the output (4sa) is rLJ, A
The output of the ND gate (46) becomes rHJ, and the output of the counter (46) becomes rHJ.
The contents of 7) are reset to Rei (in this case, since the counter (47) has an internal existence of zero from the beginning, its output is
tNo change. ), the top floor detection signal (25a)
Since the AND gate ) is opened, the output of the top floor position memory 61) is set to the car position detector -, and
The car position detection error accumulated up to now will be resolved even if there is a deviation between the sheave (I51) and the main rope 04 while running, and the car position signal (39a) will be corrected to the correct top floor position. In addition, when the car (1) stops at the lowest floor (1), the counter (4) is activated by the lowest floor detection signal (26a).
7) is reset, and the car position signal (39a) is corrected to the correct lowest floor position by the output of ) to the lowest floor position memory.

Next, the normal speed command IFMV is the terminal deceleration command value V.

The operation of the IC in the above operation (hereinafter referred to as terminal deceleration mode) will be explained.

The cause of such operation is that the operation control device IL
wJ does not issue the deceleration command signal (40c) at the required time, or the normal speed command value V increases abnormally,
A case may be considered in which the normal speed command value is maintained at a constant value and does not decrease even when the terminal floor is approached. In addition, the car position signal (9a) may not be normal due to malfunction of the car position detector, slippage between the sheave α~ and the main rope -0 due to sudden stop of the car (11), or sudden foreign noise. This can also happen if you do not indicate your location.

Now, the car (11) is traveling upwards, and the normal speed command is fkV.

When the terminal deceleration command value is 71 or more and the terminal deceleration mode is entered, the output (43a) of the comparator (43) is rH.
It becomes J. Now, the selector (44) can switch the output (44a) from the normal speed command value vp to the terminal deceleration command value V, so the car (U) moves to the top floor (9) according to the terminal deceleration command value V. Decelerate and stop. Cart (11) is on top, floor (9)
), the top floor detection signal (25a
) becomes rHJ, the AND game )Cl is opened, and the car position signal (39a) is corrected to the correct top floor position. If the terminal deceleration mode of the engine is the cause of the car position output failure of the car position inertizer, this will correct it.・On the other hand, AND (46) is the comparator output (
43a) is rHJ, so it is not opened, and the top floor detection signal (25a) causes the output of the OR gate (4b) to be rH
Even when it reaches J, the divisor (47) is not reset and 1 is counted by the comparator output (43a). Therefore, the output of the discriminator (4th day) also remains "L", and AN
D game) (41) remains open, so the start command signal (40a) can pass through, and the next operation is possible.

After stopping at the top floor (9), the car (11) then shifts to descending operation, but if it returns to the terminal deceleration mode while running, the comparator output (a3a) becomes rHJ, so the counter (4I7) ) adds 1 again, and its output becomes 2.

Now, the output of the discriminator (48) becomes rHJ and the alarm (
49) II'i sounds and alerts the manager's room of an abnormality. At the same time, since the AND gate (41) is closed, the activation command signal (40a) is not input to the speed command generation circuit (42), and the car (11) is not activated.

When the car position detector) is stopped, the normal power supply (to) K is turned on.
Instead, power is supplied from the emergency power supply via the diode. Therefore, the memory of the detected car position is retained, but if the battery becomes over-discharged due to a long-term power outage, the memory of the car position may be lost. If the power outage is restored and operation is started under these conditions, the car position signal (39a
) is significantly different from the actual car position, and even if the car (river) approaches the terminal floor (9), (1), the normal speed command value V,
does not decrease, but becomes larger than the terminal deceleration command value V, indicating that the terminal deceleration mode has entered (the needle end Wi(9),
Stop at (1). Then, the counter (47) counts 1, but the car position signal (a
Since 9a) is corrected, subsequent operations are performed normally. The counter (47) is also reset the next time the vehicle stops at the top floor (9) or the bottom floor (1).

In this way, when the terminal deceleration mode occurs for the first time, it is counted, and when it stops at the terminal floor (9) or (1), the car position signal (39a) is automatically corrected by 1φ, and the car starts traveling. It is possible. This is because erroneous detection of the car position of the electric car position detector, which detects the car position from the relative moving distance of the car (11), is considered a failure because it can be easily corrected automatically as in the example. This is because it is not something that should be done. However, next time, due to the terminal deceleration mode, the terminal floor (9
) l When the car stops at (1), the cause is not an erroneous detection of the car position, but some other failure, so the car (1 car) is prevented from running and 1 vm is emitted.
The count of the terminal deceleration mode is then the terminal floor (9),
In (1), when the car stops not in the terminal deceleration mode but in normal operation, it is reset as if the cause was erroneous detection of the car position.

As explained above, the present invention is such that when the car reaches the terminal floor, the detected car position is corrected to the position of the terminal floor by the car position correction device, and the terminal deceleration is performed so that the normal speed command value is set to a higher value than this. When it is detected that the speed has exceeded the command value, it counts the number of times, and when it reaches a predetermined number, the car is stopped from running, and when the normal speed command value is less than the terminal deceleration command value,
In addition, when the car position correction device operates, the count value is reset to zero.

This makes it possible to distinguish between a failure state in which the car cannot run normally and an abnormal state in which it can be restored to normal operation, allowing the elevator to continue operating without needlessly stopping the car and lowering service efficiency. In addition, in the event of a failure, the car can be stopped from running quickly to maintain safety.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the relationship between the normal speed command value and the terminal deceleration command value, Fig. 2 is a block diagram showing an embodiment of an elevator control device according to the present invention, and Fig. 3 is a block diagram of the processing circuit shown in Fig. 2. It is a circuit diagram. ■,...Regular violation command value, ■,...Terminal deceleration command value, (1)...1st floor (bottom floor), (9)...9th floor (top floor), (river... ...Car, tlbl...Movement amount detector, (1 smell...Drive control circuit, Threat...Terminal deceleration command generator, (c)...Detection piece, ■...Top floor detector ,
(e)...lowest floor detector, wire...processing circuit,...
・Car position correction device, 01)...Top floor flt memory, to)...Lowest floor position memory, (to),■...A
ND gate, information...car position detector, (g)...operation control circuit, (41)...AND gnito, (42)...
・・Speed command generation device, (43) ・・Comparator, (44
) selector, (45)...OR gate, (46)...
A N D gate, (4 ma)...meter, (48)...
...Discriminator Note that the same parts in the figures are indicated by the same symbols. Agent Kuzu yflg - (external name) No. 11! 1 Figure 2 Figure 3 Age procedural amendment (voluntary) Showa% ``B''f3 Director General of the Japan Patent Office, Indication of the case Patent Application No. 109146/1983 two·
Title of the invention Elevator control device;, Person making the amendment 5, Subject of the amendment (1) Detailed description of the invention in the specification (2) Drawing 6, Contents of the amendment + 11 Specification 4I, page 5, line 3 “To hoisting machine 11@”
Correct the statement to "to the hoisting machine 04)". (2) In the 3rd line of the same page, the phrase “is in two pieces” has been changed to “
is now 2,” he corrected. (3) In the 15th line of the same No. 1, the phrase ``(40c) is speed'' is corrected to ``(40c) is speed.'' (4) On page n, line 7 of the same page, the words ``ha re ni'' are corrected to ``ha history ni.'' (5) Enter the code “38” in Figure 3 of the middle curtain of the drawing, as it is not placed on the attached drawing. 7. At least one drawing showing Figure 3 after the revised inventory of attached livestock

Claims (2)

[Claims] (1) Generate a terminal deceleration command value that has a value corresponding to the distance to the terminal floor and is set to a value higher than the normal speed command value at any corner, so that the normal speed command value exceeds the terminal deceleration command value. Then, the speed of the above corner is controlled according to the terminal deceleration command value, and the car position is detected according to the movement amount of the above corner, and when the above corner reaches the terminal floor, the detected car position is changed to the above by the car position correction device. A comparator that detects when the normal speed command value exceeds the terminal deceleration command value in the case where the position is adjusted to the terminal floor, and when this comparator outputs an output, it counts the number of times it outputs. a counter that outputs an output when the comparator does not output an output and resets the counted value to zero when the car correction device operates; Equipped with a blocking circuit to prevent running
A similar elevator control device. (2) The elevator control device according to claim 1, wherein the predetermined number of times is two.