JP2693580B2 - Elevator remote maintenance equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention notifies the service center of the status of an elevator using, for example, a general subscriber telephone line (hereinafter referred to as a telephone line). The present invention relates to an elevator remote maintenance device.

(Prior Art) In recent years, elevators have played an important role as vertical transportation in the rise of buildings in cities.
Therefore, safety and reliability are required for this elevator, and there is a strong possibility that it will have a great impact on society in the event of a failure or accident.

Therefore, in order to respond promptly in the event of a failure or accident, the operation of the elevator is constantly monitored, and in order to provide accurate maintenance services, a telephone line is connected between the service center and the elevator control panel of each building. Remote maintenance is being performed in which building elevators are managed by service centers.

FIG. 7 shows a conventional example of such a remote maintenance device for an elevator. The monitoring device 2 in the service center 1 is shown in FIG.
Is a computer 3 that is in charge of maintenance, a network control unit (NCU) 5 that automatically sends and receives to and from a telephone line 4, and converts transmission data to tone signals.
A modem 6 for demodulating the received tone signal into a digital data signal is used, and the telephone line 4 inputs / outputs information of a plurality of elevators.

On the other hand, the elevator machine room 7 is provided with an elevator control panel 8 that controls the operation of the elevator, and a terminal 9 that has a function of taking in each information of the elevator control panel 8 and sending out the information by the telephone line 4. The terminal 9 is configured to send the information of the elevator control panel 8 to the service center 1 through the telephone line 4.

In this conventional remote maintenance device for an elevator, when a failure occurs in the elevator, the microcomputer of the elevator control panel 8 is provided with a certain number as an error number and its failure state according to the details of the failure. Store in memory.

When the error number is urgent, the information is immediately sent to the computer 3 of the service center 1 through the telephone line 4. Then, the computer 3 displays a failure display on the display terminal in a format predetermined according to the received error number.

Therefore, the maintenance staff decides the next action by looking at the displayed contents. For example, if the failure is important, it will be immediately dispatched to the site for recovery work.

(Problems to be Solved by the Invention) However, such a conventional remote maintenance device for an elevator has the following problems.

That is, under the present circumstances, even if the user goes to the site for failure notification due to the following reasons, the elevator may have already returned to normal before the arrival at the site.

1. The trouble report itself is due to mischief.

2. Natural restoration of the cause.

3. Return to normal by retry function.

However, since the center 1 side cannot know such a cause, even in such a case, if there is a failure report, it is immediately sent to the site, so that the site dispatch may be useless. was there.

The present invention has been made in view of such conventional problems, and continues to monitor the elevator state even after a failure occurs,
It is an object of the present invention to provide a remote maintenance device for an elevator, which enables the center side to know the natural recovery of a failure and prevents the situation where a maintenance worker is wastefully sent to the failure site.

[Configuration of the Invention] (Means for Solving the Problems) A remote maintenance device for an elevator according to the present invention includes a memory provided in an elevator control panel for storing various information about the elevator, and a failure when the elevator fails. Elevator status information input means for inputting elevator status information after occurrence, means for detecting a status change from the elevator status information input by the elevator status information input means, and the memory in the memory when a status change of the elevator is detected. Means for sequentially storing the state information given by the elevator state information input means, and checking the order of state changes from the elevator state information stored in the memory, the order of state changes occurs when the elevator is operating normally State change checking means for storing a normal return signal in the memory when it continues for a predetermined number of times or more , In which an elevator status information sending means for sending the monitoring device of the center reads the elevator status information stored in the memory.

(Operation) In the remote maintenance device for an elevator according to the present invention, an error number, an elevator door, and
Elevator status information such as position and orientation is stored in memory. Then, even after the occurrence of a failure, the elevator state information is input periodically or at any time by the input means, and the elevator state change detection means continues to monitor the change in the elevator state information, and the elevator state change detection means causes the elevator state to change. When a change in information is detected, the state information is sequentially stored in the memory.

The state change check means checks the order of the state changes of the elevators stored in the memory by the elevator state change detection means, and when the order of the state changes of the elevators matches the state change of the normal elevators, When the order of normal state changes is repeatedly detected a predetermined number of times, it is determined that the normal state has been restored, and the normal state restoration signal is stored in the memory.

In this way, the elevator status information stored in the memory is called from the monitoring device of the center, and the maintenance staff can read the elevator status information and obtain the elevator failure information, as well as know the natural recovery of the failure, and the elevator failure. It is possible to eliminate the need to visit an elevator installation site when it occurs.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

1 to 3 show an embodiment of the present invention. As shown in FIG. 2, a terminal 9 for transmitting a signal through the telephone line 4 is provided between the service center 1 and the elevator control panel 8 on the elevator machine room side. The elevator control panel 8 and the microcomputer 10 are connected by a serial transmission line 11.

As shown in FIG. 3, the terminal 9 has an NCU 12 for automatically making and receiving telephone calls and a microcomputer 1
A modem 13 for converting a 0 signal into a signal for a telephone line 4, a CPU 14 for controlling the entire terminal 9, a memory 15 for storing programs and data, and an SCU for performing serial transmission with a microcomputer 10 of an elevator control panel 8. (Serial communication unit) 16, an input gate 18 for inputting a signal from a changeover switch 17 for switching the serial transmission line 11, and an elevator control panel 8 other than the serial transmission line 11
It is composed of a DIU 20 for inputting an external contact 19 from and a bus line 21 for connecting each of these parts.

When the changeover switch 17 is turned on, the CPU 14 detects the signal from the changeover switch 17 from the input gate 18 and executes the program stored in advance in the memory 15 to receive commands and data. I can do it. The microcomputer 10 built in the elevator control panel 8 inputs the memory 22 for storing failure information and other elevator control information as shown in the functional block diagram of FIG. 1 and the elevator state information from the elevator controller 23 side. Elevator status information input section 24
And an elevator state change detecting section 25 for detecting a change in the elevator state information from the elevator state information input section 24, and this elevator state change detecting section 25.
When the elevator state change is detected, the state information storage unit 26 stores the elevator state information from the elevator state information input unit 24 in the memory 22, and the elevator state information stored in the memory 22 returns to the normal state of the elevator. A state change check unit 27 for determining whether or not, and an SCU 28 for outputting the elevator state information stored in the memory 22 to the terminal 9 via the serial transmission line 11.

Next, the operation of the remote maintenance device for an elevator having the above configuration will be described.

When a call signal is input from the service center 1 to the terminal 9, the NCU 12 judges the incoming call of its own station and notifies the CPU 14 of it.

The CPU 14 outputs a memory reference command to the microcomputer 10 of the elevator control panel 8 through the SCU 16 according to a program stored in advance in the memory 15.

Then, the CPU 14 takes in the failure data stored in the corresponding address area sent from the microcomputer 10 through the serial transmission line 11 through its own SCU 16 and inputs it into the memory 15.

Next, the CPU 14 reads the data input to the memory 15 and uses the modem according to a predetermined protocol.
Send to Service Center 1 through 13.

Next, the operation of the microcomputer 10 when a failure occurs in the elevator will be described.

When a failure occurs in the elevator, based on the information input from the elevator status information input unit 24, a memory containing a predetermined error number corresponding to the failure.
Store in 22 error bank areas. When this failure detection is performed, the information in the memory 22 is output from the SCU 28 to the terminal 9 and stored in the memory 15 of the terminal 9, and when the incoming call signal from the center 1 is given from the center 1 through the telephone line 4. A failure occurrence signal is sent from the memory 15 to the center 1 side.

Further, in the microcomputer 10, when the error number is stored in the memory 22, a door signal, a position signal, and a direction signal, which are basic operation information, are input from the elevator state information input unit 24, and these information are input. Is also stored in the error bank of the memory 22 as failure status information. Here, a door fully open / fully closed signal is used as the door signal, a floor signal is used as the position signal, and an ascending / descending signal is used as the direction signal.

Elevator state information is periodically input to the elevator state information input unit 24 from the elevator control device 23 (steps S1 and S2 in FIG. 4), but the elevator state change detection unit 25 receives the elevator state information from the elevator state information input unit 24. The new information is compared with the information input at the previous time (step S3).

Then, when it is detected that the state has changed, the state information storage unit 26 determines a predetermined error number and elevator door for the state after changing to the error bank of the memory 22, the position, Store status information such as direction signals as failure status data (step S4),
At the same time, the failure information is output from the SCU 28 to the terminal 9, temporarily stored in the memory 15, and output to the center 1 in response to the failure information call from the center 1.

The state change check unit 27 of the microcomputer 10 is
The time change of the failure state information stored in the memory 22 is checked, and the normal recovery is determined based on the flowchart shown in FIG.

That is, basically, when a state change to a normal state occurs a plurality of times in succession after a failure occurs, it is regarded as a normal return, and a predetermined error number is stored in the memory 22 as a normal return signal. First, confirm that the door is fully opened (step S11), then confirm that the door is completely closed (step S12), and then input a direction signal to set the floor signal to +1 if the vehicle is moving up (steps S13 and S14). If it is a descending operation, the floor signal is set to -1 (steps S15 and S16).

When the change in the door open / closed state and the change in the elevator position state occur three times in a row, a failure occurred in the elevator, but the failure was recovered naturally and became normal. It is determined and the error number indicating the normal recovery is stored in the memory 22 (steps S17, S18).

When the status change check unit 27 of the microcomputer 10 detects the status change after the failure, the terminal 9 is SCU2.
A sending command is given to 8, and the SCU 28 reads out the latest elevator status information in the memory 22 and outputs it to the terminal 9.

The terminal 9 temporarily stores the elevator status information from the microcomputer 10 in the memory 15, and the center 1
The elevator state information in the memory 15 is read out by the call from the.

On the side of the center 1, the failure information of the memory 15 sent from the terminal 9 through the telephone line 4 is displayed as shown in FIG. 5 for the status change after the failure.

Therefore, if the maintenance worker finds an error number indicating the normal return of the elevator in this display, it can be determined that the elevator has returned to its normal state, and for the purpose of maintenance, it is necessary to check the installation location of the elevator for maintenance and inspection. You don't have to travel.

Although the internal operation of the microcomputer 10 has been described using functional blocks in the above embodiment, the microcomputer 10 itself performs these functions by software processing based on a program.

[Effects of the Invention] As described above, according to the present invention, when a failure occurs in an elevator, the failure state is detected by the center, and even when there is a change in the failure state of the elevator, the state change is detected. When it is detected and it is judged that the status change indicates the return of the elevator to normal operation, the maintenance personnel of the center are notified of the natural recovery, so that the natural recovery after a failure occurs while being on the center side. It is possible to detect it, and once an elevator failure occurs as in the past, it is not possible to see the subsequent transition of the elevator state, so it goes to the site and if it recovers naturally, it will be wasteful. It is possible to prevent the occurrence of a situation that may happen, and it is possible to calmly respond to the failure occurrence of the elevator.

[Brief description of the drawings]

FIG. 1 is a functional block diagram of a microcomputer of an embodiment of the present invention, FIG. 2 is an overall system diagram of an embodiment of the present invention, FIG. 3 is a block diagram of a terminal of the above embodiment, and FIG. FIG. 5 is a flow chart showing an error number storing operation of the microcomputer of the above embodiment, FIG. 5 is an explanatory view showing a display example of a failure state change in the center of the above embodiment, and FIG. 6 is a judgment of normal return of the above embodiment. FIG. 7 is a flow chart showing the operation, and is a block diagram of a conventional example. 1 …… Center 4 …… Telephone line 8 …… Elevator control panel 9 …… Terminal 10 …… Microcomputer 22 …… Memory 24 …… Elevator status information input section 25 …… Elevator status change detection section 26 …… Status information storage Part 27 ... Status change check unit

Claims (1)

(57) [Claims] 1. A center monitoring device and each elevator control panel are connected using a communication line, and the information of each elevator control panel is transmitted to the monitoring device by a call from the monitoring device so that the status of each elevator is controlled. In the remote maintenance device for the elevator that monitors the elevator, a memory that is installed in the elevator control panel to store various information about the elevator, and if a failure occurs in the elevator, enter the status information of the elevator after the failure occurs. Means, means for detecting a state change from the elevator state information input by the elevator state information input means, and means for sequentially storing the state information given by the elevator state information input means in the memory when the state change of the elevator is detected And check the order of state changes from the elevator state information stored in the memory. And a state change check means for storing a normal return signal in the memory when the sequence of state changes that occur when the elevator is operating normally continues a predetermined number of times or more, and reads out the elevator state information stored in the memory. A remote maintenance device for an elevator, comprising: elevator status information sending means for sending the information to a monitoring device of the center.