JPS60103755A - Terminal switching device - Google Patents

Abstract

PURPOSE:To decrease the control system switching time at fault by deviding a terminal device into two control systems a half by a half and switching the control system automatically at lighting of a lamp through the photodetector provided in front of a fault display lamp of the controller. CONSTITUTION:A photodetection sensor S is provided in front of a line lamp 8 representing that communication of data between branches and a center is broken and a interruption lamp 9 representing generation of a fault of the said controller itself, on a front display panel 7 of a terminal controller 3 of system 1, 2 at the branch side of the on-line bank system. The sensor S detects the lighting of lamps 8, 9 and a sensor amplifier circuit 10 forms a signal that the system is faulty. An output of the circuit 10 drives a relay 12 via a driver circuit 11 and a relay contact circuit 13 changes the connection of the control system to a terminal I/O.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical field of the invention The present invention provides a system in which a computer on the center side and a control device on the terminal side (hereinafter referred to as a terminal controller) are connected through a communication line.
The terminal controller connects half of the terminals at a time via the switching device, and is related to a terminal switching device that automatically changes the system connection of the terminals when one side fails (down).

(b) Conventional technology and problems Conventionally, in banking systems, etc., as shown in Figure 1, failures are anticipated on the sensor side, and computers of the I and 2 systems are prepared, and the terminal controllers 3 and 3 of the two branches are and is connected by a communication line 4.

For example, if there are four terminals 5 on the branch 2 side, half of them are connected to the 1-system terminal controller 3 and the remaining half are connected to the 2-system terminal controller 3 via the switch 6, and the center If computer number 1 goes down, by switching the switch 6 at the branch office, for example, the computer used in system number 1 can be switched to system number two. Furthermore, even if the terminal controller 3 goes down, it is necessary to use the switch 6 to switch from, for example, the system ① to the system 2.

The two types of downs are displayed by lamps on the display panel 7 on the front of the terminal controller 3, as shown in FIG. The lamp displays include a line lamp 8 indicating that data exchange between the branch office 2 and the center 1 has not been carried out and has been interrupted, and an interruption lamp 9 indicating that a serious abnormality has occurred in the terminal controller 3 itself. Looking at the lamp display, the aforementioned switches 6 and 7 a are manually switched for the number of terminals 5, which takes time to switch the system, causing confusion during downtime, and causing problems. there were.

<c> Purpose of the Invention According to the present invention, the computer on the center side and the control device on the terminal side are connected through a communication circuit,
Each control device on the terminal side is connected to half of all the terminals via a switch, and the system connection of the terminals can be changed in the event of a failure in either system. It also displays data transmission/reception with the center side. A switching device for changing system connections of terminals in the event of a failure in one system in an online system comprising a line lamp and an interruption lamp for indicating an abnormality in the control device itself, the switching device being connected to the first system and the It is composed of two systems of switchable relay circuits, and a line lamp of the control device on the terminal side,
A terminal device characterized in that a light-receiving element is provided in front of the interruption lamp, and the relay circuit is driven by the lamp lighting detection signal of the light-receiving element to automatically change the connection of the online system. An example will be explained in detail with reference to the drawings.

FIG. 3 shows a block diagram of the online system down detection circuit of the present invention, and FIG. 4 shows a relay contact circuit diagram of the terminal switch of the present invention.

The 1st and 2nd system terminal controllers (hereinafter ']' in the online branch 21u11 explained in Figure 1 above)
/C) On the front display panel 7 of 3, the line lamp 8 and T indicate that the data exchange between the branch 2 and the center 1 has been terminated.
There is an interrupt lamp 9 indicating that a serious abnormality has occurred in the /C itself. The lighting of any of these lamps indicates that the online system for that system is down. In the present invention, the third
As shown in the figure, a light receiving sensor S is provided in front of the display lamp 8.9 of the T/C, the lighting of the lamp 8.9 is detected from the sensor S, and the light receiving sensor S is attached from the sensor amplifier circuit 10. Creates a signal to let you know when your breast is down. Also, the switch has a built-in relay circuit 13 shown in FIG. ) 12 to change the system connection through the relay contact circuit 134.

As mentioned above, by connecting and interlocking the down detector using the light receiving sensor S and the online system switching device of the relay circuit, when the online system goes down, the system connection can be changed only for the terminal on the down side automatically without human intervention. be able to.

Therefore, the time required to switch the system is shortened, and confusion when the system goes down can be kept to a minimum.

In addition, 14 is a switch, and if the switch is turned on to perform the automatic switching of the present invention, and the switch is turned off to perform manual switching as before, maintenance etc. The switching device connects between the terminal controller (T/C) on the branch side and the terminal equipment, and consists of a relay circuit.
By detecting the lighting of the circuit lamp and interrupt lamp on the display panel of /C) and interlocking the detector that detects online disconnection, the online system of the terminal can be maintained without manual intervention as in the past when the online system is down. Connection changes can be made automatically. Therefore, the switching time is shortened by simplifying the switching of the system, and the confusion that occurs when the system is down can be prevented.

[Brief explanation of drawings]

Figures 1 and 2 are diagrams for explaining a conventional terminal switch, Figure 3 is a block diagram of the online system down detection circuit of the present invention, and Figure 4 is Moe Kinoe's terminal switch. The relay contact circuit diagram is shown. In the figure, 3 is a terminal controller, 7 is a display panel, 8 is a line lamp, 9 is a Nakata 1 lamp, 10 is a sensor amplifier circuit, 11 is a driver circuit, 12 is a relay, 1
3 is a relay contact circuit, and J4 is a switch. Figure 1 Figure 2 Mr. Figure 3 Public Jノ, 2'4Tn bJ Sourmelon

Claims (1)

[Claims] The computer and control device on the sensor side are connected through a communication line to form the first and second systems, and each control device on the terminal side connects to half of all the terminals via a switch. The system connection of the terminal device can be changed in the event of a failure of either device, and it is also equipped with a circuit lamp that indicates the transmission/reception of data with the sensor side, and an interruption lamp that indicates an abnormality in the control device itself. A switching device for changing system connections of terminal devices in the event of a failure in one system in an online system, wherein the switching device is configured with switchable relay circuits of the first system and second system, and the terminal device side A light receiving element is provided in front of the circuit lamp and the interruption lamp of the control device, and the relay circuit is driven by the lamp lighting detection signal of the light receiving element,
A terminal switching device characterized by automatically changing the connection of an online system.