JP3091558B2 - Elevator monitoring 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 monitoring system having an information display function.

[0002]

2. Description of the Related Art In recent years, a display type monitoring panel such as a CRT display device has been installed in a monitoring room of an elevator, and a status signal such as an elevator car position and direction, and a monitoring signal such as an abnormality or a failure are monitored by a cyclic scan system. Transmit to the elevator monitor panel by serial transmission and display the monitor,
So-called CRT monitoring systems have been increasingly used. Also, a flat display such as an EL (electroluminescence) display is attached to the elevator cab or hall, and a message to be displayed on the flat display is input by an information input device provided separately from the CRT monitoring panel. Information display systems for transmitting and displaying on flat displays have also been widely adopted.

[0003] However, in a large building or the like, an elevator monitoring system having both the CRT monitoring system and the information display system is often adopted. In such a case, the CRT monitoring system and the information display system are combined. Transmission lines are laid separately, and a CRT monitor and a message input device are separately installed to display and input. For this reason, there is a problem that the transmission system is duplicated and the equipment cost is increased.

Therefore, it is conceivable that the CRT monitor panel and the message input device are shared and the transmission path is also shared. However, in such a case, the transmission of the elevator status signal and the monitor signal is delayed, and the message is also transmitted. There has been a problem that many problems such as display delays occur.

[0005]

As described above, the conventional elevator monitoring system has a problem that the elevator status signal and the monitoring signal are delayed, the message transmission takes time, and the display is delayed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and it is possible to transmit the monitoring state data of the elevator reliably and quickly, and also to transmit the text data as display information without fail. It is an object to provide an elevator monitoring system capable of displaying.

[0007]

According to the present invention, there is provided an elevator monitoring system comprising: an elevator status signal detecting device; an information display device installed in an elevator cab or a landing; and a transmission line connecting the elevator monitoring device and the transmission line. A scan transmission device that cyclically transmits monitoring signal data to an elevator monitoring device via a road at regular intervals, and an information display device installed in the elevator cab or hall via the transmission line. And a text transmission device for sequentially transmitting display data to the scan transmission device during idle time of each transmission cycle of the scan transmission device.

[0008]

According to the elevator monitoring system of the present invention, the monitoring signal data to the elevator monitoring device is cyclically transmitted at a fixed period by the scan transmission device via one transmission line, and at the same time, the same data is transmitted by the text transmission device. Display data to be displayed on an information display device installed in an elevator cab or landing via a transmission path is sequentially transmitted during idle time of each transmission cycle of the scan transmission device and displayed on the information display device.

Thus, the elevator monitoring signal data is transmitted to the elevator monitoring device without delay using the same transmission path, and the display data is also transmitted without delay and displayed on the information display device.

[0010]

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 functional block diagram of one embodiment of the present invention. A car interior information display 1 formed by a flat display, a hall information display 2 formed by a three-color LED display, and elevator monitoring. A CRT monitor panel 3 comprising a personal computer installed in a room and having an information input function such as a keyboard is organically connected by an information network by one transmission line 4.

[0012] This information network includes a machine room (M /
R) or a network having the information control terminal 5 installed in the elevator monitoring room as a master station and the interface stations 6 and 7 capable of serial input / output with the information displays 1 and 2 in the car room and at each landing as slave stations. And R
The configuration is such that they are connected by a transmission line 4 having electrical characteristics such as S485.

Each of the information control terminal 5 and the interface stations 6 and 7 has two CPUs, a network CPU (NPU) 8 for controlling a network and an interface CPU (CPU) 9 having an interface with each information device, as constituent elements. It is provided with a common memory such as a dual-port RAM so that data can be exchanged with each other.

CRT monitor 3 and information control terminal 5
Between the interface stations 6 and 7 and the information displays 1 and 2, the optical fiber transmission line 10 or R
They are connected by a serial transmission line 11 having electrical characteristics such as S232C.

Numeral 12 denotes an elevator control device (CTR) which controls the running of the elevator.

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

FIGS. 2 to 4 show a network transmission system performed via the transmission line 4 between the information control terminal 5, the car interior interface station 6, and each landing interface station 7. FIG. This transmission is controlled by each network CPU 8.

First, as shown in FIG. 2, a cyclic cycle of T1 is set, and monitor data and display data are transmitted alternately in each cycle, and the update cycle of the monitor data is T1.
Is guaranteed by The display data is text data mainly including a message.
It is data such as alphabets and numbers according to SCII, and the data length is often long. Therefore, this display data is transmitted using the idle time after the end of the scan of the monitoring data within the scan period T1.

FIG. 3A shows a monitoring data format, in which monitoring data is assigned to each address, and transmitted according to the scan transmission procedure shown in FIG. 4A. Thus,
The monitoring data is reliably transmitted at predetermined time intervals.

FIG. 3B shows a display data format, which shows a state in which each character is stored. Since all of the characters cannot be transmitted during the idle time of the update period T1, the display data ( 1), display data (2), ...
And transmitted separately. The transmission of the display data is performed in accordance with the message transmission procedure shown in FIG.

Next, the procedure of the transmission processing of the monitoring data and the display data will be described with reference to the flowchart of FIG. The transmission is performed endlessly. First, starting from the node S1, the address, data, address, data, and the like are sequentially transmitted by the scan transmission shown in FIG.
(Step I).

Then, when the scanning of all the addresses is completed, the scanning restart time T1 is set, and the message transmission is performed during the remaining time (step S1).
II).

This message transmission is a sequential transmission method shown in FIG.
A large amount of text data is efficiently transmitted by transmission control codes such as (data start), ETX (data end), and data length.

Then, when the cyclic scan start time T1 comes in the middle of message transmission, the number of data (data No.) transmitted so far is saved, and the process shifts to scan transmission. Thereafter, this transmission procedure is repeated. .

As described above, the monitoring signal data is cyclically transmitted to the elevator monitoring panel 3 via one transmission path 4 at a fixed period, and at the same time, is transmitted to the information display device installed in the elevator cab or hall. By transmitting display data to be displayed to the information displays 1 and 2 sequentially during the idle time of each transmission cycle and displaying a message,
The elevator monitoring signal data is transmitted to the elevator monitoring panel 3 without delay, and at the same time, the display data is also transmitted to the information displays 1 and 2 without delay and displayed.

[0026]

As described above, according to the present invention, monitoring signal data to an elevator monitoring device is cyclically transmitted at a fixed period by a scan transmission device via one transmission line, and at the same time, text transmission is performed. The display data to be displayed on the information display device installed in the elevator cab or hall via the same transmission path by the device is sequentially transmitted during the idle time of each transmission cycle of the scan transmission device and displayed on the information display device Therefore, transmission of monitoring information data to an elevator monitoring device that performs elevator monitoring and transmission of display data to an information display device installed in a car room or a landing are performed without delay via one transmission path. As a result, different types of data can be transmitted on the same cable, and the number of cables in the transmission system The input device such as a keyboard provided in the elevator monitoring device can be used as an input terminal of the information display device, so that the installation space can be reduced, and the cost of system construction can be reduced. Down becomes possible.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of one embodiment of the present invention.

FIG. 2 is an explanatory diagram of a data transmission method in the embodiment.

FIG. 3 is a data format diagram of each of monitoring data and display data in the embodiment.

FIG. 4 is an explanatory diagram of a scan transmission procedure and a message transmission procedure in the embodiment.

FIG. 5 is a flowchart of a data transmission procedure in the embodiment.

[Explanation of symbols]

 Reference Signs List 1 car room information display 2 landing information display 3 CRT monitoring panel 4 transmission line 5 information control terminal 6 interface station 7 interface station 8 network CPU (NPU) 9 interface CPU (CPU) 10 optical fiber transmission line

Claims (1)

(57) [Claims] 1. A transmission line connecting an elevator status signal detection device, an information display device installed in an elevator cab or a landing, and an elevator monitoring device, and monitoring signal data to the elevator monitoring device via the transmission line. A transmission device that cyclically transmits the data at a fixed period, and transmission of display data to be displayed on an information display device installed in a cab or a landing of the elevator via the transmission path. An elevator monitoring system comprising: a text transmission device that transmits data sequentially during idle time of a cycle.