JP2809910B2 - Elevator information display system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator information display system in which an execution program for an interface of an elevator information display is stored in an electrically rewritable nonvolatile memory and can be changed from a remote place.

[0002]

2. Description of the Related Art In recent years, an elevator information display has been installed so that a free message can be displayed in an elevator car or on each floor, and a message to be displayed is inputted from a monitoring room of the building to obtain the elevator information. The number of systems for displaying on a display is increasing.

[0005] As a conventional example of such an elevator information display system, one having a configuration shown in FIG. 5 is known. In this conventional elevator information display system, when message information is displayed on the elevator car information display 1 and the hall information display 2 at each floor, the elevator information provided in the monitoring room 3 of building equipment such as an elevator. When the display message information is input from the input device 4,
The display message information is transmitted to the elevator information control terminal 7 of the elevator machine room 6 through the transmission line 5 such as an optical fiber, and the display message information received from the elevator information control terminal 7 is transmitted through another transmission line 8. The information is transmitted to the in-car information display 1 and the hall information display 2 of each floor, and the message information is displayed on each of the information displays 1 and 2.

[0004]

However, in such a conventional elevator information display system, there is a limit to the number of information control terminals that can be controlled. Therefore, when the number of information displays increases, the information display terminals are installed at landings on all floors. There was a problem that it was difficult to do.

Further, when the number and type of information displays change, the processing capability of the information control terminal cannot be made in time, and it often happens that the information control terminal must be redesigned, resulting in a large loss. Furthermore, each of a large number of information display devices and the information control terminal must be connected by a transmission cable, and there is a problem that a large number of wirings are required.

[0006] From such a problem, an interface station is provided for each information display device, and the information station is connected to the information control terminal by an information network. A method of solving these problems by using a control structure has also been proposed.

In such a method, a communication procedure with each information display of the interface station and a variety of basic display data (data other than message information) are required, and the type of information display and the customer display specification are required. By
There is a need to install and modify software locally.

However, since the interface station is usually mounted on the elevator car, in the operation panel, or in the hoistway on the landing side, it is very difficult to change the execution program by replacing the EPROM in the interface station. There was a problem that it took time and took a lot of time to check on site.

SUMMARY OF THE INVENTION The present invention has been made in view of such a conventional problem. An interface station for controlling each information display and an information control terminal are connected by an information network, and the message information and the information display interface microcontroller are connected. It is an object of the present invention to provide an elevator information display system in which a program can be easily changed and loaded even at the site where an elevator is installed by transmitting the program to and from a computer.

[0010]

An elevator information display system according to the present invention comprises an information input terminal for inputting message display information and program information, an in-car information display installed in the elevator car, and The installed hall information display, the information input terminal, an information network that connects the in-car information display and the hall information display, and an information network interposed between the information network and the information input terminal. An interface device for sending message display information and program information to the information input terminal, which is installed in an elevator car so as to be interposed between the information network and the in-car information display, and is sent through the information network. Message information and program information from the And an interface device for receiving and storing the information from the information input terminal, which is installed in each floor so as to be interposed between the network and the floor information display of each floor, and transmitted through the information network. And an interface device for receiving and storing message information and program information addressed to the hall information display device.

Further, in the elevator information display system according to the present invention, each of the above interface devices controls a microcomputer for controlling data transmission with an information network, a microcomputer for controlling an interface with an information display, and a microcomputer for these. A common memory used for exchanging information between them, and an electrically rewritable non-volatile memory for storing an execution program of a microcomputer serving as an interface with the information display. .

[0012]

In the elevator information display system according to the present invention, by inputting message display information from the information input terminal, the information is sent out from the interface device to the information network, and the destination information included in the transmission data of the message display information is transmitted. The information is fetched from the information network by the display interface device, and a message is displayed on the information display.

If it is necessary to change the software of any of the information display devices, the program information is sent from the interface device to the information network by inputting the information from the information input terminal, and the program information is included in the transmission data. The information display device interface device of the destination information display is taken in from the information network and the information display program is rewritten.

[0014] In the elevator information display system according to the present invention, each of the interface devices includes a microcomputer for controlling data transmission with an information network.
A microcomputer for controlling an interface with the information display, a common memory used for exchanging information between these microcomputers, and an execution program of the microcomputer for interfacing with the information display. With the provision of the electrically rewritable nonvolatile memory, each information display takes in the message display information or the program information sent from the information input terminal through the information network if it is addressed to its own information display. To store the message information in a common memory, display the message information under the control of a microcomputer that interfaces with an information display device for the message display information, and write the program information to an electrically rewritable nonvolatile memory. Yo Te changing software of the information display.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. An elevator information display system according to this embodiment includes an in-car information display 11 and a three-color LED display which are constituted by a flat display or the like. Hall information display 12A, 12B of each floor hall composed of
... and an information input device 15 composed of a personal computer or the like installed in the monitoring room 13 or the machine room 14.
Are organically connected by an information network 16.

The information network 16 includes a monitoring room 13
Alternatively, the information control terminal 17 installed in the machine room 14 is used as a master station, and the information indicators 11, 1 in the car and at each landing are used.
, Which are capable of serial input / output with the slave stations 2A, 12B,..., Are set as slave stations, and are connected by an information network transmission line 20 having electrical characteristics such as RS485. Have been.

Each of the information control terminal 17 and the interface stations 18, 19A, 19B,... Has an interface with a network microcomputer (NPU) 21 for controlling the information network 16 and each of the information displays 11, 12A, 12B,. Interface microcomputer (CPU)
The microcomputer has two microcomputers 22 and 22, and can exchange data with each other via a common memory such as a dual port RAM (DPRAM) described later.

Between the information input device 15 and the information control terminal 17, each of the information displays 11, 12A, 12B,
... and the interface stations 18, 19A, 19
Are connected by a serial transmission line 23 having electrical characteristics such as an optical fiber or RS232.

FIG. 2 shows the interface station 1.
8, 19A, 19B,... Are shown in detail. Network microcomputer (NP
U) 21 is a microcomputer for controlling the information network 16 and inputs and outputs information from the information network 16 via a transmission / reception circuit 24 having IEEE standardized electrical characteristics (RS485).

The NPU 21, a read-only memory (ROM) 25a for storing an execution program, a random access memory (RAM) 26a for internal processing, and a dual port memory (DPRAM) 27
Are connected by a local bus line 28a.

Further, the information displays 11, 12A, 12B,
.. A read-only memory (ROM) 25b for storing a basic program of an interface microcomputer (CPU) 22 for controlling each of them, a random access memory (RAM) 26b for internal processing, and an electrically rewritable memory 29 for storing an execution program , And a serial input / output interface 30 such as RS232 serving as an interface between the information displays 11, 12A, 12B,..., And the DPRAM 27 are connected by a local bus line 28b.

The electrically rewritable nonvolatile memory 29
Can be composed of an EEPROM, a flash memory, a permanent RAM with a battery backup, and the like.

Next, the operation of the elevator information display system having the above configuration will be described.

First, the procedure for transmitting and storing the execution program of the interface microcomputer (CPU) 22 of the information display will be described. The object code of the execution program is sent from the information input device 15 in a predetermined format. At this time, the header in the format is specified as shown in FIG.
AD and data length (number of bytes) L are required at a minimum.
Then, the CPU 22 of the information control terminal 17 of the own station
Is the dual port RAM (DPRAM) shown in FIG.
27, the header part and the execution program part are written.

When the writing is completed, the NPU 21 of the information control terminal 17 sends out the information of the format to the transmission line 20 of the information network 16.

On this transmission line 20, all the interface stations 18, 19A, and 19 serving as slave stations are provided.
B,... Have an equal relationship, and each NPU 21 of each interface station determines whether or not the partner station address DA is its own, and writes the information to its own DPRAM 27 if applicable.

Then, the interface station that has written the transmitted information in the DPRAM 27 stores the transmitted execution program in the specified start address SA.
Electrically rewritable memory 2 corresponding to the number of data bytes L from D
Write 9 Then, the rewritten portion of the electrically rewritable memory 29 is sent out to the transmission line 20 via the reverse route, and the information input device 15 receives the portion and checks whether it has been correctly written.

Next, the procedure for transmitting the display message information will be described. When a text message is input from the information input device 15, the non-procedural transmission stored in the memo of the CPU 22 of the information input device 15 and the information control terminal 17 will be described. According to the procedure, the message information is transmitted from the information input device 15 to the CPU 22 of the information control terminal 17 and written into the DPRAM 27 shown in FIG.

The format of the message information in this case is configured as shown in FIG. 4, and the specification of the header portion requires at least the address of the partner station DA, the address of the own station SA, the start address of the message data storage MSAD, and the data length L. is there. Then, the network microcomputer (NPU) 21 of the information control terminal 17 sends out the message information of this format to the transmission path 20 of the information network 16.

Each of the interface stations 18,
19A, 19B,... Each determines whether the partner station address DA included in the message information is for its own station, and if so, writes the message information to its own DPRAM 27. Then, the interface microcomputer (CPU) 22 of the interface station writes the transmitted message information into the RAM 26b by the number of data bytes L from the designated start address SAD. Then, the CPU 22
If there is no newly stored execution program or a newly written execution program as described above, the already written execution program is activated, and the written message information is displayed according to the program. .., Which are connected to itself, and finally display a desired message.

The allocation of the execution program to the memory in the actual apparatus is as shown in FIG. 5, and the initialization processing, the download processing,
Interrupt vector processing and the like are assigned to the read-only memory (ROM) 25a because the program can be fixed,
Display screen data and its processing, which are frequently changed in accordance with the type of information display device and customer specifications, and other application programs, are frequently assigned to the electrically rewritable nonvolatile memory 29 because they are frequently changed.

As described above, in the elevator information display system according to this embodiment, the information display can be installed and controlled on each floor, and the execution program of the interface microcomputer of the information display can be downloaded. Since the information is stored, the type of information display and the display message can be easily changed at the site where the elevator is installed.

[0034]

As described above, according to the present invention, the interface station for controlling each information display and the information control terminal are connected via the information network, and the message information and the execution program of the information display interface microcomputer are provided. Since transmission is possible, the program can be easily changed and loaded even at the site where the elevator is installed, so that it is possible to flexibly cope with a change in the type of information display and a change in the display message.

Further, since the information input device is connected to the information input device and the in-car information display and the hall information display at each floor by the information network, the number of wirings does not increase even if the number of information displays increases. Many information indicators can be installed and provided for services.

[Brief description of the drawings]

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

FIG. 2 is a block diagram showing a detailed internal configuration of the interface station in the embodiment.

FIG. 3 is an explanatory diagram showing a transmission format of an execution program of an information display interface microcomputer in the embodiment.

FIG. 4 is an explanatory diagram showing a transmission format of message information in the embodiment.

FIG. 5 is a memory map in the embodiment.

FIG. 6 is a block diagram of a conventional example.

[Explanation of symbols]

11 Information Display in Car 12A, 12B, ... Landing Information Display 13 Monitoring Room 14 Machine Room 15 Information Input Device 16 Information Network 17 Input Control Terminal 18 Interface Station 19A, 19B, ... Interface Station 20 Transmission Line 21 Network Microcomputer ( NPC) 22 Interface microcomputer (CP
U) 23 transmission line 24 transmission / reception circuit 25a, 25b read-only memory (ROM) 26a, 26b random access memory (RAM) 27 dual-port RAM (DPRAM) 28a, 28b local bus line 29 electrically rewritable memory 30 serial input / output interface

Claims (2)

(57) [Claims] An information input terminal for inputting message display information and program information; a car information display installed in an elevator car; a hall information display installed on each floor; An information network that couples between the in-car information display and the hall information display; an interface device that is interposed between the information network and the information input terminal and sends out message display information and program information to the information network; Message information and program information which are installed in the elevator car so as to be interposed between the information network and the in-car information display and are sent from the information input terminal to the in-car information display and sent through the information network An interface device for receiving and storing the network, and the network Message information and program information from the information input terminal, which is installed at each floor so as to be interposed between the floor information display and the floor information display of each floor, and is transmitted from the information input terminal via the information network. And an interface device for receiving and storing the information. 2. The elevator information display system according to claim 1, wherein each interface device controls a data transmission with an information network, and a microcomputer that controls an interface with an information display. It comprises a common memory used for exchanging information between microcomputers, and an electrically rewritable nonvolatile memory for storing an execution program of the microcomputer for interfacing with the information display. Elevator information display system.