JPH0733229B2 - Elevator control equipment - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to an elevator control device using a computer.

[Prior Art] When controlling the operation of an elevator by a computer,
One problem is that the elevator is in what is called a floor stop due to some failure. The elevator is provided with a door openable zone on each floor for safety, and the car door is opened only when the car stops in this zone. Therefore, the inter-floor stop here is
This is when the car of the elevator stops outside the above-mentioned door openable zone, and in this case, the door does not open even if the elevator stops for safety reasons. Therefore,
When the inter-floor stop condition is reached, passengers must be released quickly and safely.
The measures described in Japanese Patent No. 71 are taken. This is to make the car run at a low speed to the nearest floor when the inter-floor is stopped. If two computers are provided and one of them fails, the other computer can be operated automatically or manually. It is configured to be possible.

[Problems to be Solved by the Invention] However, in the conventional elevator control device, no measures have been taken until the inter-floor stop state is repeated more than once and several times. That is, depending on the type of elevator failure (for example, failure of the tachometer of the winch motor, etc.), it may not stop properly even if you drive to the nearest floor after the failure occurs, and the car passes through the door openable zone and stops. There is a case. In such a case, the nearest floor traveling by low-speed traveling is tried again, but there is a possibility that the vehicle cannot be stopped in the door openable zone no matter how many times it is attempted, which is a so-called permanent operation state.

In the conventional case, since we do not have measures to prevent such a permanent operation state, it is not only a safety issue for the elevator, but also results that unnecessarily annoy the passengers trapped in the car. Invite.

The present invention has been made to solve the above conventional problems, and an object thereof is to obtain an elevator control device having means capable of preventing a permanent operation state at the time of failure.

[Means for Solving the Problems] An elevator control device according to the present invention is a device for controlling the operation of a car by a computer. When the car stops between floors, the car is driven at a low speed to the nearest floor, and at that time, A means for detecting that the vehicle has stopped after passing through the door openable zone, a means for counting the number of times the door openable zone has passed and stopped, and a car re-installation when the number of times by the counting means reaches a certain value. A means for disabling the start-up is added to the computer to prevent a permanent operation state.

[Operation] In the present invention, in the case where the inter-floor stop state of the elevator is not canceled even by traveling to the nearest floor, it is detected that the car has passed through the door openable zone on the nearest floor and stopped. , Count the number of passages / stops. Then, if the number of times reaches a certain value, the restart of the car is disabled, so that the permanent operation state of the elevator is prevented.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the elevator control apparatus of the present invention, and FIG. 2 is a block diagram showing the function of the present invention added to the control apparatus.

In FIG. 1, 1 is an elevator car, 2 is a rope whose one end is connected to the car 1, 3 is a sheave around which the rope 2 is wound, 4 is a counterweight connected to the other end of the rope 2, and 5 is Drive motor for sheave 3, 6 floor, 7 car 1
Is a plate for forming a door openable zone 9 installed in the hoistway for each floor 6 of each floor. When the position detector 7 faces the plate 8, position detection is performed. The container 7 emits an output 7a for opening the door. Ten
Is a pulse generator for issuing a speed signal 10a of the motor 5 to the microcomputer 11. The microcomputer 11 that controls the elevator is composed of a CPU 12, a RAM 13, a ROM 14, an input port 15 and an output port 16. 17 is a bus.

In FIG. 2, reference numeral 21 is means for detecting that the stop position of the car at the time of operation of the nearest floor due to low speed running after the inter-floor stop has passed through the door openable zone 9 and has stopped, and the position detector 7 described above is used. And plate 8. Reference numeral 22 is a means for counting the number of times the detection means 21 passes through / stops the door openable zone during the nearest floor operation, and 23 is a start prevention signal for the motor 5 when the count value of the counting means 22 reaches a certain value or more. Is a means for generating, and disables subsequent activation.

Next, the operation will be described. When the position detector 7 provided in the car 1 faces the plate 8 installed one for each floor 6, an output 7a of "1" is emitted. Output 7a when the position detector 7 is not facing the plate 8
Becomes "0". When the output signal 7a of "1" is input through the input port 15, the microcomputer 11 recognizes this as a door openable signal. A door opening command (not shown) is issued to the car 1 by the recognized door opening enabling signal.
Emit. Further, the fact that the car 1 has passed through the door openable zone 9 is recognized by the microcomputer 11 monitoring the output 7a of the position detector 7 and the signal 7a thereof being 0 → 1 → 0. And the output 7a of the position detector 7
When the car becomes "0", it is recognized that the car 1 has stopped between the floors.

When the car 1 stops between floors, the microcomputer 11 runs the car 1 at a low speed to the nearest door openable zone 9 on the floor. That is, the car speed is fed back through the pulse generator 10, and is calculated based on the deviation between the reference speed command (not shown) calculated and generated inside the microcomputer 11 and the output 10a (car speed) of the pulse generator 10. An appropriate torque command 16a is output to the motor 5. When the position detector 7 faces the plate 6 and its output 7a becomes "1", the microcomputer 11 cuts off the torque command 16a to the motor 5 and stops the car 1. Then, a door opening command is output to the car 1 to open the door and release passengers inside.

However, if the car 1 is repeatedly stopped between floors, it will be in a permanent operation state. Therefore, in order to avoid this, the following procedure is performed.

Explaining in accordance with the flowchart of FIG. 3, first, in step 31, it is determined whether or not the nearest floor operation by low speed running has been performed, and when the nearest floor operation is performed, in the next step 32, the car stop position is set to the door. It is determined whether the vehicle has stopped after passing through the openable zone. This passage / stop is determined by the output signal 7a becoming 0 → 1 → 0 as described above. At this time, if the vehicle passes through the door openable zone and is stopped, the passage stop frequency value I is counted by the counting means 22 in step 33, and the passage stop frequency value I is compared with the reference value K (step 34). ). As a result, when this I becomes equal to or higher than K, the activation inhibition signal generating means 23 generates an activation inhibition signal (not shown), and thereafter the activation of the car is disabled (step 35). The car is manually driven to the nearest floor and opened.

In the above embodiment, the nearest floor operation after the inter-floor stop has been described in the case where the traveling direction is one of the up and down directions, but a traveling direction switching means may be further added. That is, the traveling direction switching means for issuing a traveling direction command opposite to the previous traveling (traveling when passing through the door openable zone / stopping) is provided. As a result, for example, when brake adjustment is poor or when passing through or stopping the door openable zone due to load conditions, etc., if the vehicle runs at a low speed in the opposite direction, there is a high possibility that it will be possible to successfully stop in the door openable zone, resulting in permanent operation. Not only can the passengers be prevented, but the passengers in the car can be rescued.

[Effects of the Invention] As described above, according to the present invention, at the time of the nearest floor operation after the inter-floor stop, the elevator cannot be restarted when the car repeatedly goes through the door openable zone and stops. As a result, it is possible to prevent the elevator from operating forever, not only for the safety of the elevator, but also to prevent the anxiety of passengers trapped in the car from being unnecessarily increased.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an elevator control apparatus according to an embodiment of the present invention, FIG. 2 is a block diagram showing functions of the present invention added to the control apparatus, and FIG. 3 is a flow chart showing an operation of the present invention. is there. 1 ... Basket 5 ... Motor 6 ... Floor 7 ... Position detector 8 ... Plate 9 ... Door openable zone 11 ... Microcomputer 21 ... Door openable zone passage / stop detection means 22 ... Door openable zone Pass / stop Counting means 23 ... Activation inhibiting signal generating means In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A device for controlling the operation of a car by a computer, when the car stops between floors, the car passes through a door openable zone provided for each floor in the nearest floor operation of the car. Means for detecting that the car has stopped, a means for counting the number of times the door openable zone has passed and stopped, and a means for disabling the restart of the car when the number of times by the counting means reaches a certain value. And a control device for an elevator, wherein: and is added to the computer.