JP2732974B2 - Abnormality detection device for switch operation of elevator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detecting an abnormality of an operation of an elevator switch for accurately detecting an operation abnormality of various opening switches provided in the elevator and outputting an elevator door opening signal during operation.

[0002]

2. Description of the Related Art An elevator has a hall call button switch for outputting a door open signal by operating a hall call button, an open button switch for outputting a door open signal by operating a door open button in a car,
Various door opening switches (hereinafter referred to as opening switches) are provided, such as a reversing switch that outputs a door opening signal when the safety switch is pressed. If these opening switches fail and continue to be operated, the elevator doors will not close and the car will not be able to travel to the destination floor, resulting in reduced service to passengers.

Therefore, Japanese Patent Publication No. 58-42110 discloses that a hall call button switch for outputting a door open signal by operating a hall call button is in an abnormal operation state, for example, when the switch is pushed down due to the descent of a button portion. In order to detect the hall call button switch, an elevator hall call registration device for detecting an abnormal operation of the hall call button switch by detecting that the hall call button switch has been operated for a certain period of time is disclosed.

[0004]

For example, taking the hall call button as an example, except when the hall call button is kept depressed due to the depression of the button portion, the hall call button is pressed artificially. It may be kept as it is. As an example, if an elevator has a hall call button that pushes the hall call button in the same direction as the direction of travel of the car to flip the door that is closing and opens it, it waits for a companion to come to the hall. When the hall call button is kept pressed, the car stops at the hall. Even in such a case, the registration device according to the above-described disclosure has a problem in that if the call button switch is continuously operated for a certain period of time, it is determined that the operation of the call button switch is abnormal. Further, the registration device according to the above-described disclosure detects an abnormality of the hall call button switch, and cannot detect an abnormality of the other opening switch.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described present situation of detecting abnormalities in the operation of such an elevator switch, and has as its object to accurately determine that the opening switch of the elevator is in an abnormal operation state. It is an object of the present invention to provide an elevator switch operation abnormality detection device that correctly detects the abnormal operation.

[0006]

In order to achieve the above-mentioned object, a hall call button switch which is provided in an elevator and outputs a door open signal of the elevator at the time of operation, an open button switch in a car, and a safety push-in. The present invention, which is an abnormality detection device for an operation of an elevator switch for detecting an abnormality of an operation of a door opening switch including a reversing switch to be activated, detects a lapse of a predetermined time from the driving of the opening switch. Detection means, a second detection means for detecting a predetermined number of continuous operations of a door closing button provided in the car, and a detection signal from the first detection means and the second detection means. And abnormality determining means for determining an operational abnormality of the opening switch.

[0007]

With this construction, when an opening switch such as a hall call button switch, an open button switch in a car, or a reversing switch which is operated by pushing the safety switch is driven, the first detecting means causes the opening of the opening switch. It detects that a predetermined time has elapsed since the driving of the switch for use, and outputs a detection signal. At the same time, the second detection means operates to detect whether the door close button in the car has been continuously operated a predetermined number of times after the opening switch is driven, and the door close button is continuously operated a predetermined number of times. When operated, it outputs a detection signal. Then, the abnormality determination means is activated, and based on the detection signal of the first detection means and the detection signal of the second detection means, the opening switch is not in a pseudo abnormal operation state due to an artificial operation but in a failure state. , The operation is properly determined to be abnormal.

[0008]

An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a circuit diagram showing the configuration of the embodiment.

In this embodiment, a call button switch of a hall call button, an open button switch in a car, and an inverting switch for opening a door by pushing a safety switch are used as opening switches, as shown in FIG. A contact 1 of a close button switch of a door close button provided in the car and a counter 2 for counting the number of times the contact 1 of the close button switch is closed are connected in series between the DC power supply terminals P and N. And
A close button switch closing detection relay 3 is connected to the counter 2 in parallel. Further, a contact 4 of an open button switch of a door open button in the car between the DC power supply terminals P and N, and a timer 6 which operates by measuring a predetermined time T1 after the contact 4 is closed, are connected in series with each other. , And an open button switch closing detection relay 5 is connected to the timer 6 in parallel. Further, the contact 7 of the safety use switch, which is closed when the safety at the end of the door is pushed between the DC power supply terminals P, N, and a predetermined time T2 after the contact 7 is closed, operates. The timer 9 is connected in series with the timer 9, and the safety use switch closing detection relay 8 is connected to the timer 9 in parallel.

Similarly, between the DC power supply terminals P and N, a parallel connection circuit of the contact 10 of the hall call button switch of the hall call button of each floor and a predetermined time T3 after any one of the contacts 10 is closed. The timer 12 is connected in series with each other, and the hall call button switch input detection relay 11 is connected to the timer 12 in parallel. And a DC power supply terminal P,
During the period N, the contact 13 of the traveling relay and the contact 6 of the timer 6 are opened while the car is running and closed when the car stops.
A, the contact 2A of the counter 2 and the switch abnormality detection relay 15 are connected in series, and the DC power supply terminal P and the contact 6A
The contact point 9A of the timer 9 is connected between the connection point of the contact point 2A and the contact point 14A of the traveling relay, which is opened when the car is traveling and closed when the car stops.
A series connection circuit with the contact 12A is connected in parallel with the contact 9A.

In the embodiment having such a configuration, the timer 6 and its contact 6A, the timer 9 and its contact 9A, and the timer 12 and its contact 12A constitute the first detecting means of the present invention, and the counter 2 and its contact The contact 2A constitutes second detection means of the present invention, and the switch abnormality detection relay 15 constitutes abnormality determination means of the present invention.

Next, the operation of the embodiment having such a configuration will be described.

For example, a passenger in the car notices that there is a passenger trying to get into the elevator while the door of the elevator is closing, and operates the door open button in the car. In this case, it is assumed that the open button switch of the door open button has been pushed down due to a failure and remains pressed. In this case, a closed circuit is formed by the DC power supply terminal P, the contact 4 of the open button switch, the open button switch input detection relay 5 and the DC power supply terminal N, and the open button switch input detection relay 5 is energized. At the same time, a closed circuit is formed by the DC power supply terminal P, the open button switch 4, the timer 6, and the DC power supply terminal N, and the timer 6 starts measuring time. In this case, even if a passenger in the hall gets into the car, the contact 4 of the open button switch is pushed in and the elevator door does not close, so when the passenger in the car operates the door close button,
A closed circuit is formed by the DC power terminal P, the contact 1 of the door closing button switch, the closing button switch closing detection relay 3 and the DC power terminal N, and the closing button switch closing detection relay 3 is energized. Then, the closing operation of the door of the elevator starts, but when the customer releases his / her hand from the door closing button, the door of the elevator starts to open, so the user presses the door closing button again. Thus, each time the door close button is operated, a closed circuit is formed by the DC power terminal P, the contact 1 of the door close button switch, the counter 2 and the DC power terminal N, and the number of times the door close button is operated is determined by the counter 2 The contact 2A is closed when the number of continuous operations reaches a predetermined number set in advance.

In this state, the car is stopped at the landing and the traveling relay is deenergized, so the contact 13 is closed. When the contact 6A of the timer 6 is closed after a predetermined time T1, the direct current power Terminal P, contact 13, contact 6A, contact 2A,
A closed circuit is formed by the switch abnormality detection relay 15 and the DC power supply terminal N, and the switch abnormality detection relay 15 is energized, and a notification of the switch abnormality is sent to the monitoring center of the maintenance company via the communication line. In response to this notification, a maintenance person is dispatched from the monitoring center to the building where the elevator is installed, and the maintenance person sequentially checks the opening switch, and the contact 4 of the opening button switch of the door opening button breaks the opening button switch. The operator knows that it is in the closed state due to the lowering of the door, and repairs the failure of the open button switch to restore the operation of the elevator.

In this case, the passenger in the car recognizes the passenger who is going to get into the car at the landing further,
If the door open button is kept pressed and the contact 4 of the open button switch is closed, the passenger in the car will not operate the door close button, so the switch abnormality detection relay 15 is activated. Instead, the artificial state and the failure of the open button switch are determined, and the failure of the open button switch is accurately detected.

Similarly, when the reversing switch which is operated by pushing the safety switch breaks down, the contact 7 of the safety switch is kept closed.
When the safety use switch detection relay 8 is energized and the timer 9 measures a predetermined time T2, the contact 9a is closed. Then, the counter 2 counts a predetermined number of closings of the contact 1 due to the repeated operation of the door closing button, and the contact 2A is closed. Therefore, the DC power supply terminal P, the contact 9A, the contact 2A, the switch abnormality detection relay A closed circuit is formed by the DC power supply terminal 15 and the DC power supply terminal N, the switch abnormality detection relay 15 is energized, and a notification of the switch abnormality is sent to the monitoring center of the maintenance company. When the hall call button switch of each hall breaks down, the contact 10 of the hall call button switch is kept closed, the hall call button switch closing detection relay 11 is energized, and the timer 12 is activated for a predetermined time. When T3 is counted, contact 12
A closes. In this case, since the traveling relay is deenergized, the contact 14 is closed, and the counter 2 counts a predetermined number of times the contact 1 is closed by repeating the operation of the door close button, and the contact 2A is turned on. Since the switch is closed, a closed circuit is formed by the DC power supply terminal P, the contact 14, the contact 12A, the contact 2A, the switch abnormality detection relay 15, and the DC power supply terminal N, and the switch abnormality detection relay 15 is energized to activate the monitoring center of the maintenance company. A notification of a switch abnormality is made to the user. As described above, when the hall call button switch or the reversing switch of each hall breaks down, the failure is judged and distinguished from the manual operation in the same manner as in the case of the above-mentioned open button switch failure, and is accurately determined. Is detected.

As described above, according to the embodiment, the failure of the door opening switch including the hall call button switch, the opening button switch in the car, and the reversing switch operated by pushing the safety switch, and the simulated failure state caused by the manual operation And accurately detect and report the failure of these opening switches, making it possible to accurately detect abnormalities in elevator switch operation and to efficiently perform maintenance and inspection of elevator switches. become.

[0018]

As described in detail above, in the present invention,
The first detecting means detects that a predetermined time has elapsed since the opening switch was driven, and the second detecting means detects a predetermined number of continuous operations of the door closing button provided in the car. Since the abnormality determining means determines the operation abnormality of the opening switch based on the detection signals of the first detecting means and the second detecting means, the abnormal operation due to the failure of the opening switch and the artificial pseudo abnormal operation Is accurately determined,
It is possible to accurately detect an abnormality in the operation of the switch of the elevator, and to efficiently perform maintenance and inspection of the switch of the elevator.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

[Explanation of symbols]

 1, 4, 7, 10 contacts 2 Counter 2A contact 3 Close button switch closing detection relay 5 Open button switch closing detection relay 6, 9, 12 Timer 6A, 9A, 12A contact 8 Safety use switch closing detection relay 11 Hall call button Switch closing detection relay 13, 14 contacts 15 Switch abnormality detection relay

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Takaaki Oka 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Within Hitachi Building System Service Co., Ltd.

Claims (1)

(57) [Claims] 1. A hall call button switch provided in an elevator and outputting a door opening signal of the elevator when activated.
An abnormality detection device of an elevator switch operation for detecting an abnormality of an operation of a door opening switch including a reversing switch operated by pushing an open button switch and a safety switch in a car, and for a predetermined time from the driving of the opening switch. First detecting means for detecting that a predetermined time has elapsed, second detecting means for detecting a predetermined number of continuous operations of a door closing button provided in the car, the first detecting means and the second detecting means. Abnormality determination means for determining an operation abnormality of the opening switch based on a detection signal of the detection means.