JP2695867B2 - Elevator equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to an improvement of an elevator device provided with a device for monitoring an operation state of an elevator control device,
The present invention relates to an elevator device that realizes easy connection of hardware and software to an elevator control device to be monitored.

[Conventional technology]

An abnormality of the elevator control device is grasped by an abnormality monitoring terminal device or the like so that a danger to a passenger's life is not given.

An elevator abnormality monitoring device is disclosed in Japanese Unexamined Patent Publication No. 59-22869.
It is introduced in the official gazette and the like.

[Problems to be solved by the invention]

The monitoring of the operation state of the elevator control device and the like can be performed by the elevator control device itself in parallel with the elevator control.However, when the operation of the elevator control device is abnormal, the abnormal device itself performs its own monitoring. Since it is essentially difficult to monitor the operation state, it is considered that providing an abnormality monitoring terminal device independent of the elevator control device enables accurate operation state monitoring.

When an abnormality monitoring terminal device for monitoring the operation state of the elevator control device is provided independently of the elevator control device, the electrical connection method between the elevator control device and the abnormality monitoring terminal device may be such that the abnormality of its own device is different from that of another device It is indispensable to prevent the transmission of the data to the elevator control device. Change,
The load increase must be kept to a minimum.

Conventionally, there has been a method of connecting an elevator control device or the like to the abnormality monitoring terminal device by connecting a signal line of a processing control circuit comprising a serial data transmission line or a microprocessor between the devices. In order to add the data transfer control, a large change was required in the elevator control device.

An object of the present invention is to provide an elevator apparatus which can easily connect a monitoring terminal apparatus for monitoring the influence while minimizing the influence on the elevator control apparatus.

[Means for solving the problem]

The present invention connects a monitoring terminal device to the elevator control device, and in the elevator device that monitors the operation state of the elevator control device by the monitoring terminal device, a bidirectional memory capable of asynchronously reading and writing from two directions, Means for writing the control state information of the elevator from the first direction to the two-way memory, and means for reading the information written to the two-way memory from the second direction asynchronously with the writing. And means for monitoring the elevator control state based on the read information.

In a preferred embodiment of the present invention, the elevator control device and the abnormality monitoring terminal device are connected by a serial data transmission line insulated from the two devices, and the transmission is constituted by independent hardware from the control microprocessor of the device. A control circuit was provided to absorb the load associated with data transmission. In addition, the data transmission control circuit and the microprocessor that performs the original control of the device are both provided by the data transmission control circuit and the microprocessor that performs the original control of the device.
Data reading and writing were possible in both directions by a memory circuit.

As a result, the microprocessor that performs the elevator control of the elevator control device can link the elevator control state to the data transmission control circuit in the elevator control device without substantially affecting the load of the original elevator control software. When writing to the bidirectional memory circuit, the elevator abnormality monitoring terminal device:
Data can be read from a bidirectional memory circuit connected to the data transmission control circuit in the elevator abnormality monitoring terminal device.

[Action]

According to the main feature of the present invention, the elevator control information written in the memory by the elevator control device is read and monitored by the monitoring terminal device irrespective of this writing. Can be connected to a monitoring device.

According to a preferred embodiment, the monitoring terminal device is connected to the elevator control device to be monitored by a serial data transmission method that is electrically insulated. They do not affect each other.

On the other hand, the elevator control device writes the elevator control status into the bidirectional memory circuit connected to the elevator abnormality monitoring terminal device, while the load associated with the connection of the elevator abnormality monitoring terminal device is different from the original elevator control software load. Only has little effect.

Therefore, it is possible to install the elevator control device of the elevator abnormality monitoring terminal device without affecting the hardware and software.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described.

FIG. 1 shows the overall configuration of the elevator abnormality monitoring system. The elevator abnormality monitoring terminal device
One unit monitors the operation status of multiple elevator control devices installed in the same building, and when an abnormality is detected, issues an alert to the elevator monitoring center via telephone line, and interphones in the elevator car and the elevator Voice communication with the monitoring center is possible.

In FIG. 1, reference numerals 1 to 4 are elevator abnormality monitoring terminal devices. One elevator abnormality monitoring terminal is installed in one building or one elevator machine room.
There are several installation forms, such as one stand or one for each elevator system such as an emergency elevator and a general elevator. Reference numeral 5 denotes a telephone network such as NTT. In the telephone line network, home telephone exchanges in each building and exchanges of telecommunications carriers such as NTT and Dainiden, and 6 to 11 including communication lines are elevator control devices. The elevator control device includes a loop type, a hydraulic type, and the like. The elevator control device may have any interface with the elevator abnormality monitoring terminal device.

12 to 15 are data transmission lines between the elevator abnormality monitoring terminal devices 1 to 4 and the elevator control devices 6 to 11.
This data transmission line is a serial data transmission system, a common bus system between connecting devices, and a plurality of elevator control devices can be connected to one elevator abnormality monitoring terminal device. FIG. 1 shows that two or more elevator control devices 6, 7, and 9, 10 are connected to the elevator abnormality monitoring terminal devices 1, 3, respectively. Also, it is shown that one elevator control device 8, 11 is connected to each of the elevator abnormality monitoring terminal devices 2, 4. Reference numeral 16 denotes an elevator monitoring center device. The elevator monitoring center device issues an abnormality occurrence alarm to a supervisor of the elevator monitoring center and records the abnormality occurrence data by receiving the elevator abnormality notification data from the elevator abnormality monitoring terminal devices 1-4.

Reference numerals 17 and 18 denote telephone lines connected to the elevator abnormality monitoring terminals 1 to 4 and the elevator monitoring center device 16.

FIG. 2 illustrates the hardware configuration relating to the connection between the elevator abnormality monitoring terminal devices 1-4 and the elevator control devices 6-11, and the connection between the respective devices.

The connection method between the elevator abnormality monitoring terminal device 22 and the elevator control device 21 described in FIG. 2 is common to all connection relationships between the elevator abnormality monitoring terminal devices 1 to 4 and the elevator control devices 6 to 11 in FIG. It is.

In FIG. 2, a serial data transmission line 23 connects the elevator control device 21 and the elevator abnormality monitoring terminal device 22. A plurality of elevator control devices can be connected to the serial data transmission line 23.

Reference numerals 24 and 25 denote interface circuits for electrically insulating the serial data transmission circuit 23 from the elevator control device 21 and the elevator abnormality monitoring terminal device 22. The interface circuits 24 and 25 are a pulse transformer circuit,
Alternatively, it is realized by a current loop circuit or the like.

26 and 27 are data transmission / reception circuits. The data transmission / reception circuits 26 and 27 convert the transmission / reception data into serial bit data strings and exchange the data with the serial data transmission line 23 through the interface circuits 24 and 25. Data transmission / reception circuit 26,2
The data transmission method 7 may be either a synchronous method or an asynchronous method.

28 and 29 are data transmission control circuits. The data transmission control circuits 28 and 29 are provided independently of the operations of the microprocessors (described later) of the elevator control device 21 and the elevator abnormality monitoring terminal device 22 according to a predetermined transmission control procedure. Data transmission is performed between devices connected to 23.

Reference numerals 32 and 33 denote main control microprocessors of the elevator control device 21 and the elevator abnormality monitoring terminal device 22, respectively.

Reference numerals 30 and 31 denote bidirectional memory circuits that can read and write data from and to the data transmission control circuits 28 and 29 and the main control microprocessors 32 and 33 of each device.

The data transmission control circuits 28 and 29 operate independently of the operation with the main control microprocessors 32 and 33.
The data exchanged through 3 is stored in the bidirectional memory circuits 30 and 31.

Reference numeral 34 denotes a data transmission / reception circuit for notifying the elevator monitoring center of data detected by the elevator abnormality monitoring terminal device 22 as abnormal.

Reference numeral 35 denotes a data modulation / demodulation circuit for transmitting a binary bit data sequence of 0 and 1 exchanged with the data transmission / reception circuit to an elevator monitoring center via a telephone line.

Numeral 36 is a dial selection signal generating circuit for sending the telephone number of the elevator monitoring center, which is the data transmission destination, to the telephone network exchange via the telephone line.

Reference numeral 37 denotes a line protection circuit for preventing the signal of unnecessary power and frequency components from being transmitted from the elevator abnormality monitoring terminal device 22 to the telephone line.

38 is a telephone network control circuit for connecting the elevator abnormality monitoring terminal device 22 to a telephone network.

39 and 40 are main memory circuits for storing control programs, data, and the like for the elevator control device 21 and the elevator abnormality monitoring terminal device 22.

FIG. 3 shows the bidirectional memory circuits 30, 31 in FIG.
Is shown in detail.

In FIG. 3, reference numerals 301 and 401 denote read control signals from the two directions to the bidirectional memory circuit. 302 and 402 are two-way write control signals to the bidirectional memory circuit. Reference numerals 303 and 403 denote microprocessor wait control signals for giving priority to one of the operations, such as reading or writing in two directions, when the operations overlap.

Reference numeral 501 denotes a contention control circuit for memory control signals 301 to 304 and 401 to 403.

304 and 404 are memory address signals, and 305 and 405
Is a memory data signal.

The conflict control circuit 501 reads the memory from two directions,
Alternatively, the control right is given to the writing by the priority control. If a conflict occurs, one allows control and the other has. The wait control is performed by wait control signals 303 and 403. When a conflict occurs, the address signal 304 or 404 on the side permitted to be controlled enters the memory circuit, and the corresponding data is output as either the data signal 305 or 405.

Reference numeral 502 denotes a multiplex circuit for an address signal, which makes only the address signal, read or write control signal on the side permitted to be controlled valid.

 503 is a memory body.

Reference numerals 306 and 406 denote control circuits for reading and writing control signals to and from the memory.
Wait control is performed with the internal competition control circuit.

307 and 407 are address signal buffer circuits, and 308 and 408 are data signal buffer circuits.

 Next, the operation of the above embodiment will be described.

The elevator controller 21 periodically writes control state data necessary for monitoring the operation state of the elevator in the bidirectional memory circuit 30 in the elevator controller 21 in parallel with the operation of the elevator.

The elevator control status data written in the bidirectional memory circuit 30 in the elevator control device 21 is transmitted to the data transmission control circuit 28 of the elevator control device 21 and the elevator abnormality monitoring terminal device regardless of the operation of the elevator control device 21 itself. The data is transferred to the bidirectional memory circuit 31 of the elevator abnormality monitoring terminal device 22 according to the data transmission control procedure between the data transmission control circuit 29 and the data transmission control circuit 29.

Data transmission control procedures with the data transmission control circuits 28 and 29, between the transmission control circuit, a system without master-slave relationship, or,
A method may be adopted in which one of the transmission control circuits is set as a master station and the other is set as a slave station.

FIG. 4 shows that one elevator abnormality monitoring terminal device
This figure shows a transmission control procedure when data is read from an elevator abnormality monitoring terminal device which is a master station and a plurality of elevator control devices are slave stations and which is a master station. In this example, since the data of the bidirectional memory circuit 30 in the elevator control device 21 is not read out at once but is read out several times, the head address of the read data and the number of read data are specified. I have.

FIG. 4 shows that the elevator abnormality monitoring terminal device sequentially issues a data read request to the elevator control devices A and B and fetches data.

101 and 201 are data head identification signals, 106 and 205 are data end identification signals, 102 and 202 are data destination device codes, 103 and 203.
Is the data source device code, 104 is the read address, 1
05 is the number of read data, and 204 is the read data.

In the system shown in FIG. 4, the elevator abnormality monitoring terminal device becomes the main station. First, 102 is a code indicating the elevator control device A, 103 is a code indicating the elevator abnormality monitoring terminal device, and The read start address and the number of data of the bidirectional memory of
Put them in 104 and 105 respectively and send them out to the transmission line.

Upon receiving this, the device connected to the transmission line determines whether or not it is addressed to its own device by 102,
If it is addressed to the own device, the corresponding data of the bidirectional memory circuit in the own device is put into 204, the code indicating the elevator abnormality monitoring terminal device is set at 202, and the elevator control device A is set at 203.
To the transmission line.

The elevator abnormality monitoring terminal repeats this for all elevator control devices connected to the transmission line.

When a transmission error occurs in the data transmitted on the transmission line of the elevator abnormality monitoring terminal device and the elevator control device, and a response to the data read request from the elevator abnormality monitoring terminal device is not returned within a predetermined time, After the data transmission is completed, the elevator abnormality monitoring terminal device waits for a predetermined time t, and transmits a data read request to the next elevator control device. Since the elevator abnormality monitoring terminal device periodically reads data from the elevator control device, the data in which a data transmission error has occurred is ignored.

Data reading from the elevator abnormality monitoring terminal device 22 and the elevator control device 21, and writing of the read data to the bidirectional memory circuits 30, 31 are performed by the main control microprocessors 39, 40 by the data transmission control circuits 28, 29. And run independently.

FIG. 5 shows data allocation in the bidirectional memory circuits 30 and 31 in the elevator control device 21 and the elevator abnormality monitoring terminal device 22.

The control state data of the elevator control device 21 is transferred to the bidirectional memory circuit 31 in the elevator abnormality monitoring terminal device 22. As shown in the abnormality monitoring terminals 1 and 3 in FIG. When the device is connected, as shown, it is allocated to a different memory space of the bidirectional memory on the elevator abnormality monitoring terminal device side.

The elevator abnormality monitoring terminal device 22 performs elevator abnormality monitoring using the control state data of the monitored elevator in the own address space.

When the elevator abnormality monitoring terminal device 22 detects the abnormality of the elevator as described above, it issues an abnormality to the elevator abnormality monitoring center.

The abnormality notification is performed by the telephone network via the data transmission / reception circuit 24 and the data modulation / demodulation circuit 35 of the elevator abnormality monitoring terminal device 22.

〔The invention's effect〕

According to the present invention, the elevator monitoring terminal device can be easily attached to the elevator control device.

According to a preferred embodiment, when the elevator abnormality monitoring terminal device is attached to the elevator control device, software provided to the elevator control device itself,
The influence of hardware can be minimized, and the 24-hour continuous and detailed monitoring of the elevator control device can be performed.

In addition, since the elevator control device and the elevator abnormality monitoring terminal device are connected by serial data transmission, future expandability is high.

Further, since the elevator control device and the elevator abnormality monitoring terminal device are electrically insulated, the abnormality of the elevator control device does not spread to the elevator abnormality monitoring terminal device.

[Brief description of the drawings]

1 is an overall configuration diagram of an elevator abnormality monitoring system according to the present invention, FIG. 2 is a connection diagram between an elevator control device and an elevator abnormality monitoring terminal device according to an embodiment of the present invention, and FIG. FIG. 4 is a diagram showing a data transmission control procedure, and FIG. 5 is a diagram showing data allocation in a bidirectional memory circuit. 1-4: Elevator abnormality monitoring terminal device, 6-11 ...
Elevator control device, 16 ... Elevator monitoring center device, 24,25 ... Interface circuit, 26,27 ... Data transmission / reception circuit, 28,29 ... Data transmission control circuit, 30,31
.... Bidirectional memory circuit.

Claims (3)

(57) [Claims] An elevator control device is connected to a monitoring terminal device, and the monitoring terminal device monitors an operation state of the elevator control device. Means for writing the control state information of the elevator to the two-way memory from the first direction, and reading the information written to the two-way memory from the second direction asynchronously with the writing. Means for monitoring an elevator control state based on the read information. 2. A two-way memory in which a monitoring terminal device is connected to an elevator control device, and the monitoring terminal device monitors an operation state of the elevator control device. Means for writing the control state information of the elevator to the two-way memory from the first direction, and reading the information written to the two-way memory from the second direction asynchronously with the writing. Means, and serial data transmission control means for transmitting the read information to the monitoring terminal device. 3. A monitoring terminal device is connected to the elevator control device, and the monitoring terminal device monitors the operating state of the elevator control device. A directional memory, means for writing elevator control status information to the first bidirectional memory from the first direction, a second bidirectional memory capable of asynchronously reading and writing from the two directions, The second memory is connected between a second direction of one bidirectional memory and a first direction of the second bidirectional memory, reads information written in the first memory, and reads the second memory. Serial data transmission control means for writing to the monitoring terminal device; and an elevator written to the second memory from a second direction of the second bidirectional memory. Elevator apparatus characterized by comprising means for reading the control state information.