JPS62205982A - 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 [Field of Industrial Application] The present invention relates to an elevator control device that improves elevator safety.

[Prior Art] This type of conventional elevator control device determines whether or not the door can be opened in a zone where it can be opened, so that the door does not open between floors at t/1. If it is a zone, the door is opened, and as shown in Japanese Patent Application Laid-Open No. 56-12283, the door is opened using a plate installed on each floor and a position switch attached to the car, similar to a position detector. The door is opened by detecting a door-opening trigger.

The above-mentioned conventional device is shown in FIG. 2, in which (11) is a cage, and (12) is a counterweight for this cage (1), which is fixed to both ends of a rope (13). (
14) is a sheave around which a rope (13) is wound. (15) is a motor that drives the sheave (14), (18) is a pulse generator that is connected to the motor (15) and generates pulses proportional to the rotation speed of this motor (15), and (17) is a pulse generator. A counting circuit (18) is an electronic computer that counts the number of pulses generated from the generator (18), and for example, by reading and calculating the count value (tea) of the counting circuit (17), Calculate the distance traveled.

In the conventional elevator control device configured as described above, the sheave (14) is driven by the motor (15), and the car (11) travels to the destination floor. At this time, if the car (11) were to stop on the floor for some reason, the door-openable zone is detected to prevent the door from opening under such conditions. A door opening signal (19a) is input to the electronic computer a (18) by the plate (20) installed on each floor and the position switch (19) installed on the car, and this signal (19a) When it is on, it is determined that the door can be opened and the door is opened.

[Problems to be Solved by the Invention] Since the conventional elevator control device is configured as described above, the door can be opened when the door opening enable signal (tea) is on, and the position point switch serving as the position detection means is activated. (19) is in an on-failure, the door-opening signal (19a) is always on, causing the problem that the door is opened even though the car has stopped between floors.

This invention was made to solve the above-mentioned problems, and by detecting a failure of the position detection means,
The purpose is to improve elevator safety.

[Means for Solving the Problems] The elevator control device according to the present invention detects the current cloth position of the car based on the position of a plate installed in the hoistway corresponding to a plurality of floors. The car position is calculated by a car position calculating means, and based on the calculation result of the car position calculating means, the area where the detection operation of the position detecting means is not activated is calculated by the area calculating means, and the position is detected by the area calculating means. Inspecting the detection result of the means based on the calculation result of the area calculation means,
The configuration is such that the presence or absence of a failure is detected by a failure detection means.

[Operation] The failure detection means in this invention detects the current position of the car based on the position of the plate.
A failure is detected based on the calculation result obtained by the car position calculation means from the rotation value of the electric motor for driving the elevator.

[Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 and 2. FIG. 1 shows a circuit block diagram of an elevator control device according to this embodiment, and FIG. 2 shows a system configuration diagram of an elevator device using the elevator control device of FIG. 1.
In each of the above figures, the elevator control device according to the present embodiment includes a position switch (6) that detects the current position of the car based on the position of a plate (20) installed in the hoistway corresponding to a plurality of floors. , hoist the car in the hoistway.
a position detecting means (1) that calculates the car position by the rotation of the electric motor a (15) that lowers the car, and the position detecting means (1)
an erroneous calculation detection means (2) for detecting the presence or absence of an erroneous calculation based on the calculation result obtained from the calculation based on the time from the start of deceleration to the stop in the stopping operation of the car; and the position detection means (1). The above position switch (
6) a zone calculation means (4) for calculating each zone of detection operation/non-operation, and inspecting the detection results of the position switch (6) based on the calculation results of the zone calculation means (4);
The position switch (6) is configured to include a failure detection means (5) for detecting the presence or absence of a failure, and to detect the presence or absence of a failure in the position switch (6) based on the detection result of the miscalculation detection means (2).

The operation of this embodiment based on the above configuration will be explained with reference to FIGS. 3 to 5.

Fig. 3 is a flowchart for detecting switch-on failure according to this embodiment, and Fig. 4 is a flowchart for detecting selector deviation (
(detailed diagram of step (21)), and Figure 5 shows velocity waveform diagrams when the selector is misaligned, and in each of the above figures, the position detection means (
Based on the calculation result of step 1), the remaining distance to the expected landing floor is calculated by the remaining distance calculation means (3). The above remaining distance is calculated by extracting the floor height of the expected landing floor from the pre-stored floor height table for each floor, and calculating the remaining distance by calculating the difference between this and the current position of the car. Set.

Thereafter, the electronic computer (18) counts the moving distance of the car from the motor (15) to the pulse generator (16) to the counting circuit (17) and sequentially decreases the remaining distance. Then, a reference speed command corresponding to this gradually decreasing remaining distance is extracted from the ROM table, and when a floor of 15 mm is detected by the landing switch of the scheduled landing floor, the vehicle enters the landing casing.

Based on this remaining distance, the non-operating position of the position detector, that is, the zone where the signal of the position switch (6) is normally off is detected, and if the output of the position switch signal within this zone is on, it is determined that there is a failure.

(The failure detection zone is 1350mm to 1050m from the floor surface.
Let's proceed with the story as m. ) Also, this failure check is performed based on the remaining distance, but if the expected landing floor is set incorrectly or the current position of the car is abnormal (from now on, if you select The remaining distance itself is unreliable, and there is a risk that the fault check of the position switch (6) may be erroneously detected. Therefore, the error detection means (
2), if the selector is out of alignment, the failure check is invalidated.

In other words, (a) when the selector is normal, the position switch (6
), and when the selector (a) is abnormal, the failure check of the position switch (6) is disabled to prevent false detection, and safety is enhanced based on each control.

Next, if the remaining distance calculated by step (23) of remaining distance calculation is between 1350mm and 1050mm, proceed to step (25).
A failure determination of the switch signal is performed at the step 1, and if the switch signal is on, the position detection means (1) determines that there is a failure.

In addition, when the selector is misaligned, follow the steps (
21) detects the selector shift, and when the selector is abnormal,
The failure check of the position detection means (1) is disabled.

Selector shift detection will be explained below. Assume that the car (11) is operating upward with floor K as the landing floor. If a selector shift occurs at this time, a speed waveform as shown in FIG. 5 will result. Therefore, in the same figure, when the selector is misaligned, deceleration starts earlier due to the incorrect remaining distance, and even if the remaining distance reaches 20, the reference speed command is set at a constant low speed because the position point 15 mm from the floor cannot be detected. The vehicle continues to run while maintaining the value, and enters the landing sequence after detecting the floor of 15 mm. Due to the incorrect remaining distance, the vehicle starts decelerating early, and from then on, it travels at a low speed until it reaches a rocky floor. Therefore, the deceleration time becomes longer than in normal conditions.

That is, in step (32) of FIG. 4, the deceleration time T1 is counted, and when this deceleration time TI becomes equal to or greater than a certain value CON1, it is determined that the selector has missed.

Next, the operation of fault detection by the fault detection means (5) will be explained.

If the selector is off, deceleration will start due to an incorrect remaining distance, and for example, as shown in Fig. 5, the electronic computer (
18) erroneously recognized the remaining distance as 1350mmN105
Assume that it is 0 mm. At this time, the door openable signal is on, and it is erroneously detected that the position detection means (1) is out of order.

In addition, in the above embodiment, the selector shift was determined based on the deceleration time, but this was determined based on the (i) speed reference command, (11)
They may be replaced with deceleration distances, respectively.

The case using the speed reference command is shown in FIG. 6, and the case using the deceleration distance is shown in FIG. 7.

(i) Erroneous detection of a failure in the position detection means (1) due to the speed reference command is due to the fact that when the selector shifts, until the floor level is detected, the vehicle is driven at a low speed to the landing floor (see Figure 5). Time T when command VPAT is below low speed V1
Step (43)) When the low-speed running time T2 becomes equal to or greater than the constant value CON2, it is determined that the selector is off.

(ii) Erroneous detection of a failure in the position detection means (1) by M-speed distance calculation is due to the fact that when the selector is misaligned, the distance from the start of deceleration to landing becomes longer than when it is normal, and therefore the distance traveled per calculation cycle. #Procedure to add DPSI from the start of deceleration (52
)), when the total value DIS becomes equal to or greater than the specified value []IS1, it is determined that the selector is not selected.

In addition, in this embodiment, the case of failure check of the door openable zone detection position switch was explained.
m is detected (used as the starting point of the landing sequence and the operating point of the brake).

(er) The floor level switch for writing the floor high price is 225m above the floor.
m ~ Detection of the scene 225mm below the floor (of the floor height,!It
; Detect quasi-positions 225 above the floor and 225 below the floor. )
shall be.

(iii) The position switch for floor alignment operation is 75m above the floor.
Detection of the zone 75 mm below the floor (detecting the zone area where the floor alignment operation is possible).

Similar effects can be achieved in each of the cases listed in L.

In addition, when the above embodiment is configured to include an erroneous operation detection means (2), when the erroneous operation detection means (2) detects an erroneous operation of the position detection means (1), normal elevator operation continues. Do this. Other force error calculation detection means (2)
If the configuration does not include this miscalculation detection means (
2) immediately stops the operation of the elevator when the position detecting means (1) detects an erroneous calculation.

[Effects of the Invention] As explained above, the elevator control device according to the present invention includes a position detecting means for detecting the current position of a car based on the position of a plate installed in a hoistway corresponding to a plurality of floors; a car position calculation means for calculating a car position based on the movement of the car; an area calculation means for calculating a detection operation/non-operation area of the position detection means based on the calculation result of the car position calculation means; Since the system is configured to include a failure detection means that inspects the detection results of the position detection means based on the calculation results of the area calculation means and detects the presence or absence of a failure, it is possible to detect in advance whether or not there is a failure of the position detection means. This has the effect of improving the safety of the elevator landing operation.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram according to an embodiment of the present invention, FIG. 2 is an elevator system configuration diagram, FIG. 3 is a flowchart for detecting a position switch ON failure according to the present invention, and FIG. 4 is a flowchart for detecting selector deviation. FIG. 5 is a velocity waveform diagram when the selector is misaligned, FIG. 6 is a flowchart for detecting selector misalignment in another embodiment, and FIG. 7 is a flowchart for detecting shift in another embodiment. In the figure: (1) Cart position calculation means, (2) Miscalculation detection means, (3) Remaining distance calculation means, (4) Zone detection means, (5) Failure detection means, (6) It is a position switch. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent: Masuo Oiwa (Fuquo
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Procedural amendment (voluntary), name of the invention, elevator control device, person making the amendment Representative Moriya Shiki, agent 5, full text of the specification to be amended and drawings . 6. Contents of amendment (1) The entire specification shall be amended as shown in the attached sheet. (2) Correct figure 1 in the middle of the drawing as shown in the attached sheet. 7. List of attached documents (1) 1 copy of the amended specification (2) Drawings
1 Tools Description 1. Name of the invention Elevator control device 2. Claims (1) An elevator control device for controlling an elevator car that runs between a plurality of floors, which corresponds to the plurality of floors. position detection means for detecting the current position of the car based on the position of a plate installed in the hoistway; car position calculation means for calculating the car position based on the movement of the car; and calculation by the car position calculation means. A zone detection means for calculating detection operation/non-operation areas of the position detection means based on the results, and a detection result of the position detection means being inspected based on the calculation results of the zone detection means to determine whether or not there is a failure in the position detector. What is claimed is: 1. An elevator control device comprising: failure detection means for detecting failure detection means. (2) The above-mentioned car position calculation means is provided with an erroneous calculation detection means for detecting the presence or absence of erroneous calculation from the time from the start of deceleration to the stop in the stopping operation of the car based on the calculation result obtained by the calculation, and The elevator control device according to claim 1, characterized in that the detection result of the failure detection means is invalidated when the calculation detection means detects an erroneous calculation. (3) The car position calculation means is configured to calculate the car position based on the rotation value of a motor that hoists and lowers the car in the hoistway. The elevator control device described in . 3. Detailed Description of the Invention [Field of Industrial Application] This invention relates to an elevator control device that increases the safety of elevators. [Prior Art] This type of conventional elevator control device determines whether or not the door can be opened in the zone where the door can be opened, so that the door does not open between floors. The door is opened by a plate installed on each floor and a position difference switch attached to the car, similar to the position detector shown in JP-A-56-12283. It detects the possible zone and opens the door. The above conventional device δ is shown in FIG. 2, where (11)
The basket (12) is a counterweight for the basket (11), and is fixed to each end of the rope (13). (14) is a sheave around which a rope (13) is wound. (15) is a motor that drives the sheave (14), (16) is a pulse generator that is connected to the motor (15) and generates pulses proportional to the rotation speed of this motor (15), and (17) is a pulse generator. A counting circuit (18) is an electronic computer that counts the number of pulses generated from the generator (16), and for example, the count value (17a) of the counting circuit (17)
By reading and calculating, the moving distance for each calculation cycle is calculated. In the conventional elevator control device configured as described above, the sheave (14) is driven by the motor (15), and the car (11) travels to the destination floor. At this time, if the car (11) were to stop on the floor for some reason, the door-openable zone is detected to prevent the door from opening under such conditions. A door opening signal (19a) is input to the electronic calculator a (18) by the plate (20) provided on each floor and the position switch (18) provided on the car, and this signal (19a) is turned on. When this happens, it is determined that the door can be opened and the door is opened. [Problems to be Solved by the Invention] Since the conventional elevator control device is configured as described above, the door can be opened when the door opening enable signal (H3a) is on, and the position point switch which is the position detection means is activated. (19) is in an on-failure, the door-opening signal (19a) is always on, causing the problem that the door is opened even though the car has stopped between floors. This invention was made to solve the above-mentioned problems, and by detecting a failure of the position detection means,
The purpose is to improve elevator safety. [Means for Solving the Problems] The elevator control device according to the present invention detects the current position of the car using a position detection means based on the position of a plate installed in the hoistway corresponding to a plurality of floors. The car position is detected by a car position calculating means, and based on the calculation result of the one-nucle car position calculating means, the area in which the position detecting means is detected or not is calculated by the zone detecting means, and the position is detected. The detection result of the means is checked based on the calculation result of the zone detection means, and the presence or absence of a failure of the position detector is detected by the failure detection means. [Operation] The failure detection means in this invention detects the current position of the car based on the position of the plate.
A failure is detected based on the calculation result obtained by the car position calculation means from the rotation value of the elevator drive motor. [Example] Hereinafter, an example of the present invention will be described based on FIGS. 1 and 2. FIG. 1 shows a circuit block diagram of an elevator control device according to this embodiment, and FIG. 2 shows a system configuration diagram of an elevator device using the elevator control device of FIG. 1.
In each of the above figures, the elevator control installation according to this embodiment includes a position detection means (6) that detects the current position of the car based on the position of a plate (20) installed in the hoistway corresponding to a plurality of floors. and hoist the car in the hoistway.
A position detection means (1) calculates the car position by the rotation of the motor (15) for lowering the car, and the calculation result obtained by the calculation of the position detection means (1) is calculated from the start of deceleration during the car stop operation. Miscalculation detection means (2) that detects whether there is an erroneous calculation based on the time until the car stops, and remaining distance calculation that detects the remaining distance to the scheduled landing floor based on the calculation result of the car position detection means (1). A zone detection means (4) calculates each detection operation/non-operation zone of the position switch (19) by means (3), and a calculation of the detection result of the position switch (19) by the zone detection means (4). A configuration comprising a failure detection means (5) that performs an inspection based on the result and detects the presence or absence of a failure, and disables the presence or absence of a failure in the position detection means (6) based on the detection result of the malfunction detection means (2). It is. The operation of this embodiment based on the above configuration will be explained with reference to FIGS. 3 to 5. Fig. 3 is a flowchart for detecting switch-on failure according to this embodiment, and Fig. 4 is a flowchart for detecting selector deviation (
(detailed diagram of step (21)) and Figure 5 show velocity waveform diagrams when the selector is shifted. Calculated by distance calculation means (3). The above remaining distance is calculated by extracting the floor height value of the expected landing floor from the floor height value table of each floor stored in advance when the expected floor of the car is determined.
The remaining distance is set based on the difference between this and the current position n of the car. Thereafter, the electronic computer (18) counts the moving distance of the car from the motor (15) to the pulse generator (16) to the counting circuit (17) and sequentially decreases the remaining distance. Then, a reference speed command corresponding to this gradually decreasing remaining distance is extracted from the ROM table, and when the original music of 15 mm is detected by the rock floor switch of the planned landing floor, the landing sequence begins. Based on this remaining distance, a non-operating position of the position detector, that is, a zone where the signal of the position switch (18) is normally off is detected, and if the output of the position switch signal within this zone is on, it is determined that there is a failure. (From the failure detection zone onwards, the floor surface is 1350mm ~ 1050mm)
Let's proceed with the discussion as mm. ) Also, this failure check is performed based on the remaining distance, but if the expected landing floor is set incorrectly or the current position of the car is abnormal (from now on, if you select The remaining distance itself is unreliable, and there is a risk that the fault check of the position switch (19) will be erroneously detected. Therefore, if the malfunction detection means (2) detects whether the selector has shifted, and if the selector has shifted, the failure check is invalidated. In other words, when the (7) selector is normal, the position switch (1
9) is executed, and when the selector (a) is abnormal, the failure check of the position switch (19) is disabled to prevent false detection, and safety is enhanced based on each control. Next, the failure determination of the position detector will be described in detail. The remaining distance calculated by the remaining distance calculation procedure (23) is 135.
When the distance is 0 mm to 1050 a+m, the switch signal is determined to be faulty in step (25), and if the switch signal is on, it is determined that the position switch (19) is faulty. In addition, when the selector is misaligned, follow the steps (
21) detects the selector shift, and when the selector is abnormal,
Disables the failure check of the position switch (19). Selector shift detection will be explained below. Assume that the car (11) is operating upward with Kx as the landing floor. If a selector shift occurs at this time, a speed waveform as shown in FIG. 5 will result. Therefore, in the same figure, when the selector is misaligned, deceleration starts earlier due to the incorrect remaining distance, and even if the remaining distance reaches 20, the position point of the original song 15 ma+ cannot be detected, so the reference speed command is a constant low speed. The vehicle continues to run while maintaining the value and enters the landing sequence after detecting the 15mm sensor. Due to the incorrect remaining distance, the vehicle started decelerating, and from then on, it traveled at a low speed to the floor and landed on the floor. Therefore, the deceleration time becomes longer than in normal conditions. That is, in step (32) of FIG. 4, the deceleration time T1 is counted, and when this deceleration time TI becomes equal to or greater than a certain value COold, it is determined that the selector has missed. Next, the operation of fault detection by the fault detection means (5) will be explained. If the selector is off, deceleration will start due to an incorrect remaining distance, and for example, as shown in Figure 5, the electronic calculation (
1B) incorrectly recognizes the remaining distance from 1350mm to 105
Assume that it is 0 mm. At this time, the door openable signal is on, and it is erroneously detected that the position switch (19) is out of order. In this way, in order to prevent erroneous detection of ON failure determination of the position switch when the selector is shifted, the failure switch is disabled when the selector is selected (step (27)). In addition, in the above embodiment, the selector deviation was determined based on the deceleration time, but this was determined based on (i) the reference speed command, and (ii)
They may be replaced with deceleration distances, respectively. The case using the speed reference command is shown in FIG. 6, and the case using the deceleration distance is shown in FIG. 7. (i) The method for detecting selector deviation using the reference speed command is as follows:
Since the vehicle is driven to the rI floor at a low speed until the floor level is detected when the selector is out of alignment (see Figure 5), the time T2 during which +, q and the speed command VPAT are less than or equal to the low speed v1 is counted (step (43)). When this low-speed running time T2 exceeds a certain value CON2, it is determined that the selector has missed. (Rooster) The method for detecting selector deviation based on deceleration distance is that when the selector is misaligned, the distance from the start of deceleration to landing is longer than when it is normal. 52)), its total value []
When IS exceeds the specified value DISI, it is determined that the selector has failed. In addition, in this example, the case of failure check of the door openable zone detection position switch was explained.
m is detected (used as the starting point of the landing sequence and the operating point of the brake). (11) The floor level switch for writing the floor high price is 225 above the floor.
mm ~ Detection of 225mm zone below the floor (of floor height), (
The quasi-positions above the floor 225 and below the floor 225 are detected. ). (iii) Position j and switch for floor alignment operation are 75 above the floor.
+am ~ Under the floor? Detection of 5auw zone (detection of zone area where floor alignment operation is possible). Similar effects can be achieved in each of the above cases. In addition, in the above-mentioned embodiment, when a failure of the position detector is detected, restarting the elevator is disabled to improve safety. Further, when the selector is out of alignment, the malfunction detection means (5) is reset by the malfunction detection means (2), and normal operation is possible thereafter. [Effects of the Invention] As explained above, the elevator control device according to the present invention includes a position detecting means for detecting the current position of a car based on the position of a plate installed in a hoistway corresponding to a plurality of floors; a car position calculation means for calculating a car position based on the movement of the car; a zone detection means for calculating a detection operation/non-operation area of the position detection means based on the calculation result of the car position calculation means; Since the detection result of the means is inspected based on the calculation result of the zone detection means and the failure detection means is configured to detect whether or not there is a failure in the position detector, it is possible to detect whether or not there is a failure in the position detection means. This has the effect of improving the safety of the elevator. 4. Brief description of the drawings Fig. 1 is a circuit block diagram according to an embodiment of the present invention, Fig. 2 is a system configuration diagram of an elevator, Fig. 3 is a flowchart for detecting on-failure of a position switch of the present invention, Fig. 4 5 shows a flowchart for detecting selector deviation, FIG. 5 shows a velocity waveform diagram at the time of selector deviation, FIG. 6 shows a flowchart for detecting selector deviation in another embodiment, and FIG. 7 shows a flowchart for detecting selector deviation in another embodiment. In the figure, (1) is the car position calculation means, (2) is the error calculation detection means, (3) is the remaining distance calculation means, (4) is the zone detection means, (5) is the failure detection means, and (6) is the It is a position detection means. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent Masuo Oiwa Amendment to Figure 1 procedure (voluntary) 1. Indication of the incident Patent application No. 1986-04967/No. 2,
Title of the invention: Elevator control device 3. Person making the amendment: Representative Moriya Shiki 4, agent: Detailed description of the invention in the amended specification attached to the written amendment submitted on February 9, 1988. 6. Contents of the amendment (1) "In other words, (A)" on page 8, line 12 of the amended specification attached to the procedural amendment submitted on February 9, 1986.
The statement "In other words, (a)" is corrected. (2) In the same book, page 1O, line 13, the statement ``When the selector is selected, use a failure switch'' is corrected to ``If the selector is out of alignment, the fault check is corrected to j.'' (3) ``Speed standard command'' in the same book, page 1O, line 18 The description will be corrected to "reference speed command."that's all

Claims (3)

[Claims] (1) In an elevator control device that controls an elevator car that runs between multiple floors, the current position of the car is detected based on the position of a plate installed in the hoistway corresponding to the multiple floors. a position detection means, a car position calculation means for calculating a car position based on the movement of the car, and an area calculation means for calculating a detection operation/non-operation area of the position detection means based on the calculation result of the car position calculation means. and,
An elevator control device comprising: failure detection means for inspecting the detection result of the position detection means based on the calculation result of the area calculation means and detecting the presence or absence of a failure. (2) The above-mentioned car position calculation means is provided with an erroneous calculation detection means for detecting the presence or absence of erroneous calculation from the time from the start of deceleration to the stop in the stopping operation of the car based on the calculation result obtained by the calculation, and The elevator control device according to claim 1, characterized in that the detection result of the failure detection means is invalidated when the calculation detection means detects an erroneous calculation. (3) The car position calculation means is configured to calculate the car position based on the rotation value of an electric motor that hoists and lowers the car in the hoistway. The elevator control device described in .