JP2002060156A - Maintenance system for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a maintenance system for an elevator preventing leakage of various types of maintenance information recorded in a control panel. SOLUTION: This maintenance system is provided with the control panel 1 controlling the operation of the elevator and a maintenance device 4 reading various types of maintenance information recorded in the control panel via a transmission device 5 having a transmission interface mechanism. The control panel 1 allows the dedicated transmission device 5 to record elevator characteristic information under the condition that the communication admission flag is set, the dedicated transmission device 5 writes the elevator characteristic information from the control panel into an incorporated nonvolatile memory 5d, and various types of maintenance information from the control panel 1 is thus read out by the maintenance device 4 via the dedicated transmission device 5 based on the collation between the elevator characteristic information inputted from the control panel and the elevator characteristic information written in the nonvolatile memory 5d.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator maintenance system for inspecting and maintaining an elevator.

[0002]

2. Description of the Related Art In an elevator control panel, apart from an operation control program for safely and comfortably operating an elevator, a maintenance program independently developed by a maintenance company for the purpose of streamlining maintenance work is installed. I have. The maintenance program has a function of recording various types of maintenance information used for planning maintenance work and repairing failures in conjunction with the operation of the elevator, and performing an inspection operation of the elevator based on an inspection command from a maintenance device.

[0003] Since the maintenance information is the know-how of the maintenance company itself, an elevator is provided between the elevator control panel and the maintenance device as means for preventing various types of maintenance information recorded in the elevator from leaking to a third party. A dedicated transmission device is provided between the control device and the maintenance device, and the maintenance device is connected to the control panel of the elevator via the transmission device every time a maintenance worker visits for maintenance.

FIG. 5 is a block diagram showing a configuration of a conventional elevator maintenance system. In FIG. 5, 1 is a control panel for controlling the operation of the elevator, 2 is a transmission device for performing communication between the control panel 1 and the maintenance device 4, and 3 is a transmission device for connecting the transmission device 2 and the maintenance device 4 flexibly. The transmission cable 1a is an interface (hereinafter, I / F) for the transmission device 2 installed on the control panel 1.
).

[0005] In the elevator maintenance system having the above configuration, the transmission device 2 and the transmission cable 3
The maintenance device 4 is carried by the maintenance staff when checking the elevator, and is used when referring to various maintenance information recorded in the control panel 1 of the elevator.

[0006] The transmission device 2 is a transmission I / O dedicated to the elevator.
F has a function of transmitting various requests from the maintenance device 4 to the control panel 1, reading various maintenance information recorded in the control panel 1, and transmitting the information to the maintenance device 4. The reading of the maintenance information is one function, and the maintenance device 4 has many other functions such as a writing function, a call registration function, and an inspection operation command function.

Since these functions can be realized by connecting the maintenance device 4 to the control panel 1 via the transmission device 2 by a maintenance person, a third party can easily transmit maintenance information from the control panel 1. Can not get.

[0008]

In the above-mentioned conventional elevator maintenance system, the control panel 1 is usually provided in a machine room, and the transmission device 2 is controlled by the control panel 1 even when the elevator is in operation. I for transmission equipment
/ F1a, it was possible to read out various maintenance information recorded in the control panel 1 in a hot-line state and transmit it to the maintenance device 4.

In the case of a machine room-less elevator, since the control panel 1 is installed in the hoistway, the maintenance device 4 can be safely and easily connected to the control panel 1 while the elevator is in operation. However, as a response, the transmission device 2 is installed in the control panel 1 in advance, and only the maintenance device 4 is connected at the time of maintenance work, and various types of maintenance information recorded in the control panel 1 are read in a live state, Transmission to the maintenance device 4 is conceivable.

However, since the maintenance device 4 itself uses a general-purpose personal computer, there is a possibility that unauthorized copying of the maintenance program may be performed relatively easily by a third party. Information was easily leaked to third parties.

The present invention has been made in view of the above points, and has as its object to provide an elevator maintenance system capable of preventing leakage of various maintenance information recorded on a control panel.

[0012]

An elevator maintenance system according to the present invention uses a control panel for controlling operation of an elevator and various types of maintenance information recorded in the control panel via a transmission device having a transmission interface function. The control panel causes the dedicated transmission device to record the elevator-specific information on condition that the communication permission flag is set, and the dedicated transmission device transmits the elevator-specific information from the control panel. The information is written to a built-in nonvolatile memory, and the maintenance device via the dedicated transmission device performs the above based on a comparison between the elevator unique information input from the control panel and the elevator unique information written to the nonvolatile memory. It is characterized by reading various maintenance information from the control panel. It is.

The control panel distinguishes the dedicated transmission device from another transmission device based on code information of the connected transmission device, and when the other transmission device is connected, the dedicated transmission device. A communication permission flag for permitting communication with the communication device is set.

[0014]

FIG. 1 is a block diagram showing the configuration of an elevator maintenance system according to an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a control panel for controlling operation of an elevator, which is installed in a hoistway. 4 is a maintenance device, 5 is a control panel 1 and a maintenance device 4
This is a dedicated transmission device according to the present embodiment having a function of a transmission interface for performing communication between them, and is installed in a hoistway similarly to the control panel 1. Reference numeral 6 denotes a hoistway installation cable for extending the portable terminal I / F of the dedicated transmission device 5 to the landing, and reference numeral 7 denotes a landing connector for connecting the hoistway installation cable and the transmission cable.

Here, the dedicated transmission device 5 is a transmission device that is always connected after being installed on the control panel 1 installed in the hoistway, and is independent of the elevator operation control.
Therefore, when a maintenance contract is concluded between the maintenance company and the elevator owner, the maintenance company is connected for the purpose of labor saving of inspection work and ensuring safety. To enable the transmission interface function of the dedicated transmission device 5, FIG.
The operation is performed according to the procedure shown in FIG.

In the configuration shown in FIG.
The internal configuration of the control panel 1 and the dedicated transmission device 5 has the configuration shown in FIG. That is, as shown in FIG. 2, the control panel 1 has an interface 1a for communicating with a transmission device, a CPU 1b, a ROM 1c and a RAM 1d storing elevator-specific information and the like. On the other hand, the transmission device 5 includes an interface 5 for communicating with the control panel 1.
a, the CPU 5b, the ROM 5c, and the nonvolatile memory 5
d, a RAM 5e, and a portable terminal interface 5f for communicating with a portable terminal as the maintenance device 4.

Next, in the elevator maintenance system having the above-described configuration, the transmission interface function of the transmission device 5 is enabled to read various maintenance information from the control panel 1 by the maintenance device 4 via the dedicated transmission device 5. The enabling operation will be described with reference to the flowcharts shown in FIGS.

FIG. 3 shows a processing program stored in the ROM 1c of the control panel 1 and executed under the control of the CPU 1b, and makes the transmission interface function of the dedicated transmission device 5 effective. Here, before connecting the dedicated transmission device 5 according to the present embodiment to the control panel 1, if the same transmission device 2 as the conventional one carried by the maintenance person is not connected to the control panel 1, the dedicated transmission Communication between the control panel 1 and the maintenance device 5 via the device 5 is not permitted. This is because even if the dedicated transmission device 5 is lost, the lost transmission device 5 cannot be used as it is.

First, it is determined whether or not the connected transmission device is the transmission device 2 (step S1). In this case, the dedicated transmission device 5 has a code different from that of the transmission device 2,
The CPU 1b of the control panel 1 identifies whether or not the device is the transmission device 2 by identifying the code. As a result, if the connected transmission device is the transmission device 2, a communication permission flag for permitting communication via the dedicated transmission device 5 connected next is set in the RAM 1d (step S2).

Thereafter, when the transmission device 2 is disconnected and the dedicated transmission device 5 is connected to the control panel 1 and it is determined that the connected transmission device is the dedicated transmission device 5 (step S3), The elevator-specific information is recorded in the I / F 5a of the dedicated transmission device 5 on condition that the communication permission flag is set in the RAM 1d (steps S4 and S5). Thus, the I / F of the dedicated transmission device 5
Elevator-specific information having the same content as that of the control panel 1 connected to 5a is recorded, and the transmission interface function of the dedicated transmission device 5 becomes effective.

FIG. 4 shows a processing program stored in the ROM 5c of the dedicated transmission device 5 and executed under the control of the CPU 5b. Maintenance device 4
The communication permission is given. First, elevator specific information is input from the control panel 1 from the I / F 5a (step S11). At this stage, the specific information stored in the RAM (not shown) built in the I / F 5a is "00H" or "FFH". Is determined (step S11). that time,
The built-in RAM is in the initial state if there is no history of connection with the control panel 1 in the past, and the stored content is “00H”.
The communication between the control panel 1 and the maintenance device 4 via the dedicated transmission device 5 is not permitted (step S13).

On the other hand, if the unique information stored in the built-in RAM is "FFH" and there is a history of connection with the control panel 1 in the past, then the elevator unique information is recorded in the nonvolatile memory 5d. Is determined (step S
14). If no elevator specific information is recorded,
The elevator specific information read from the I / F 5a is written to the nonvolatile memory 5d (step S15).

If it is determined in step S14 that the elevator specific information has been written and recorded in the nonvolatile memory 5d, the process proceeds to step S16.
The input elevator specific information is checked to see if it matches the elevator specific information written and recorded in the nonvolatile memory 5d, and if they match, a communication permission is set in the RAM 1d and the dedicated transmission device 5 The communication between the control panel 1 and the maintenance device 4 is permitted (step S1).
7), if they do not match, it is not permitted (step S1)
3). In this way, the communication with the maintenance device 4 is permitted only when the communication permission is set in the RAM 1d.

Therefore, according to the above embodiment, once,
The transmission device 5 attached to the site is lost due to theft or the like, and thereafter realizes a security function that cannot be used even if it is connected to a control panel of another elevator.

[0025]

As described above, according to the present invention, the control panel causes the dedicated transmission device to record the elevator-specific information on condition that the communication permission flag is set. The dedicated transmission device writes the elevator specific information from the control panel into a built-in non-volatile memory, and compares the elevator specific information input from the control panel with the elevator specific information written in the non-volatile memory. Various maintenance information is read out from the control panel by the maintenance device via the control device, so even if the dedicated transmission device once installed is connected to the control panel of another elevator, it is recorded on the control panel. Various maintenance information cannot be obtained, and leakage of various maintenance information recorded on the control panel can be prevented. It is possible to increase the Yuriti property.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an elevator maintenance system according to an embodiment of the present invention.

FIG. 2 is a diagram showing in detail an internal configuration of a control panel 1 and a dedicated transmission device 5 shown in FIG.

FIG. 3 is a ROM 1c of the control panel 1 shown in FIGS. 1 and 2;
5 is a flowchart of a processing program stored in the CPU and executed under the control of the CPU 1b.

FIG. 4 is a diagram showing an R of the dedicated transmission device 5 shown in FIGS.
It is a flowchart of the processing program stored in OM5c and executed by control of CPU5b.

FIG. 5 is a block diagram showing a configuration of a conventional elevator maintenance system.

[Explanation of symbols]

1 control panel, 1a transmission device I / F, 1b CPU,
1c ROM, 1dRAM, 2 transmission device, 4 maintenance device, 5 dedicated transmission device, 5a I / F, 5b
CPU, 5c ROM, 5d nonvolatile memory, 5e
RAM.

Claims (2)

[Claims] 1. A control panel for controlling operation of an elevator, and a maintenance device for reading out various maintenance information recorded on the control panel via a transmission device having a transmission interface function, wherein the control panel includes a communication device. The dedicated transmission device records the elevator-specific information on the condition that the permission flag is set, and the dedicated transmission device writes the elevator-specific information from the control panel into a built-in nonvolatile memory, Based on a comparison between the input elevator specific information and the elevator specific information written in the non-volatile memory, the maintenance device reads the various maintenance information from the control panel via the dedicated transmission device. Elevator maintenance system characterized by: 2. The elevator maintenance system according to claim 1, wherein the control panel identifies the dedicated transmission device and another transmission device based on code information of the connected transmission device, and controls the other transmission device. An elevator maintenance system, wherein a communication permission flag for permitting communication with a dedicated transmission device when the transmission device is connected is set.