JPH06274256A - Information processor capable of on-line switching peripheral apparatus - Google Patents

Abstract

PURPOSE:To execute ON/OFF control of a power supply in each peripheral apparatus by simple constitution without generating noise and to switch peripheral apparatus in an on-line state. CONSTITUTION:When a power supply OFF command for instructing the OFF of a power supply for an auxiliary storage device 10-1 e.g. is inputted by input operation using a console terminal 30, a microcomputer 23 controls a logic circuit 24 so that a control line 24-1 is set up to a low level and no current flows to the input sides of optical semiconductor relays 21-1, 22-1 provided correspondingly to the device 10-1. Thereby the output sides of the relays 21-1, 22-1 which are insulated from the input sides are turned off and both power supplies +5V, +12V supplied to the device 10-1 through the relays 21-1, 22-1 are interrupted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus having a plurality of peripheral devices, and more particularly to an online exchange control device which enables online exchange of each peripheral device.

[0002]

2. Description of the Related Art In an information processing apparatus, for example, an electronic computer system, a floppy disk device, a cartridge tape device, a magnetic disk device, etc. are mounted as an auxiliary storage device in addition to an arithmetic control unit which is a control center of the system. . Since these auxiliary storage devices have a relatively high failure frequency and a short product life as compared with other devices in the system, the number of times of device replacement is increased.

Normally, only one power supply device is installed in an electronic computer system. For this reason, conventionally, it has been general to replace the device with the power of the entire system turned off and the system operation stopped, each time the auxiliary storage device fails or during regular maintenance.

[0004]

As described above, an information processing apparatus such as an electronic computer system has a power supply unit.
It is common that only one unit is installed, so conventionally, when replacing peripheral devices such as auxiliary storage,
There was a problem that the operating rate of the entire system decreased because the power of the entire system had to be turned off. Therefore, recently, in order to solve this problem, (a) a method of providing a power supply device for each peripheral device and turning off the AC (AC) power supply for each device (b) output of the power supply device or input of peripheral devices A switch or the like was provided in the system to shut off DC (direct current) output, and either system was introduced.

However, the above method (a) has a problem that the cost of the entire system is increased and the mounting space is increased. Also, the method of (b) is such that the switch is turned on /
Chattering noise and arcs when off (due to switch bouncing due to mechanical contacts),
Since it is uncertain how much the power supply unit will be affected (ripple noise, load fluctuation, etc.) and how each signal of the entire system will be affected, there was a problem in terms of the reliability of the entire system.

The present invention has been made in view of the above circumstances, and an object thereof is to generate noise by ON / OFF control of a power supply for each peripheral device to be mounted, although the structure is simple. It is an object of the present invention to provide an information processing apparatus that can be performed without any operation, and thus peripheral devices can be replaced in an online state, and the system operation rate and reliability can be improved.

[0007]

SUMMARY OF THE INVENTION The present invention is an optical semiconductor relay in which the input and output of each peripheral device to be mounted are separately provided for each DC power source required for driving the peripheral device, and An optical semiconductor relay that turns on / off according to the current condition on the input side to supply / shut off DC power supply to a corresponding peripheral device, an input means for inputting a power on / off instruction for each peripheral device, and this input And a control means for controlling on / off of the optical semiconductor relay corresponding to the designated peripheral device according to the power on / off instruction input from the means.

[0008]

In the above structure, when the power-on / off instruction of a peripheral device is input from the input means, the control means
Only the optical semiconductor relay corresponding to the peripheral device designated by the power on / off instruction is turned on / off. As a result, when the optical semiconductor relay is turned on, DC power is supplied to this peripheral device, and when the optical semiconductor relay is turned off, only DC power supply to this peripheral device is cut off. During the on / off control of the power supply of the peripheral device using this optical semiconductor relay, the input and output of the relay are insulated, so that chattering noise does not affect the system.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration centering on an online exchange control device provided in an information processing device.

In the figure, 10-1 to 10-n are auxiliary storage devices such as a floppy disk device, a cartridge tape device, and a magnetic disk device. Auxiliary storage device 10-1
-10-n uses, for example, + 5V and + 12V DC power supplies as drive power supplies. These DC power supplies are system power supplies (AC
In response to the power supply), + 5V and + 12V DC voltages are generated.

Reference numeral 20 indicates the supply / cutoff of the DC power to the auxiliary storage devices 10-1 to 10-n.
-n is controlled individually on the power input side, and the auxiliary storage device 10-1
10-n online exchange (online exchange)
An online exchange control device for enabling the above, and 30 is a console terminal. The console terminal 30 is used for inputting various instructions, for example, for inputting an instruction (power on / off instruction) for turning on / off the power of the auxiliary storage devices 10-1 to 10-n.

The online exchange control device 20 includes optical semiconductor relays 21-1 to 21-n, 22-1 to 22-n, a microcomputer 23, which are provided corresponding to the auxiliary storage devices 10-1 to 10-n. And the logic circuit 24 as a main component.

Optical semiconductor relays 21-1 to 21-n, 22-1 to
Input / output of 22-n (between the input side and the output side) is insulated. This optical semiconductor relay 21-1 to 21-n, 22-1 to 2
2-n has input side terminals T1 and T2 and output side terminals T3 and T4, and outputs according to the current input to the terminal T1 and output from the terminal T2 (that is, according to the current condition on the input side). It is turned on / off to control the voltage supply / interruption from the DC power source (not shown) connected to the output side terminal T3 to the terminal T4.

The terminal T1 of the optical semiconductor relay 21-i (i = 1 to n) is connected to, for example, +5 V (DC power source) via a current limiting resistor (current limiting resistor) Ri, and the relay 2
The terminal T2 of 1-i is connected to the terminal T1 of the optical semiconductor relay 22-i. The terminal T3 of the relay 21-i is connected to, for example, + 5V (DC power source), and the terminal T4 of the relay 21-i is connected to the + 5V power input of the auxiliary storage device 10-i.

Next, the terminal T1 of the optical semiconductor relay 22-i is connected to the terminal T2 of the optical semiconductor relay 21-i, and the terminal T2 of the relay 22-i is connected to the control line 24-i of the logic circuit 24. ing. The terminal T3 of the relay 22-i is connected to, for example, + 12V (DC power source), and the terminal T4 of the relay 22-i is connected to the + 12V power input of the auxiliary storage device 10-i.

The microcomputer 23 performs control in accordance with various instructions input from the console terminal 30, and when it is instructed to turn on / off the power of the auxiliary storage device 10-i, the microcomputer 23 passes through the logic circuit 24. Optical semiconductor relay 21
-i, 22-i is controlled on / off. At the time of system startup, the microcomputer 23 receives an initialization command from an arithmetic control unit (not shown) which is a control center of the information processing device in which the online exchange control device 20 is placed, and the optical semiconductor relays 21-1 to 21-. 21-n and 22-1 to 22-n are turned on.

The logic circuit 24 is connected to the terminals T4 of the optical semiconductor relays 22-1 to 22-n via the control lines 24-1 to 24-n and to the microcomputer 23 via the input / output line 25. Has been done. The logic circuit 24 controls the control lines 24-1 to 24-24 in response to an instruction from the microcomputer 23.
By setting -n to a low level / high level, the optical semiconductor relays 21-1, 22-1 to 21-n, 22-n are turned on / off. Further, the logic circuit 24 uses the control line 2
The microcomputer 23 is notified of the states of 4-1 to 24-n. Next, the operation of the online exchange control device 20 in the configuration of FIG. 1 will be described in order of (a) system startup and (b) auxiliary storage device exchange. (A) At System Startup First, the operation at system startup (at the time of initial start) will be described.

When the system power supply (AC power supply) of the information processing device in which the online exchange control device 20 is placed is turned on, the + 5V DC power supply and the + 12V DC power supply are driven. As a result, a + 5V voltage is applied to the terminals T3 of the optical semiconductor relays 21-1 to 21-n and the optical semiconductor relays 22-1 to 22-n.
A voltage of + 12V is supplied to the terminals T3 of the respective terminals.
In addition, + is applied to the terminal T1 of the optical semiconductor relays 21-1 to 21-n.
A 5V voltage is supplied through the current limiting resistors R1 to Rn.

At this time, the operation control unit issues an initialization command to the microcomputer 23. By this initialization command, the microcomputer 23 gives the logic circuit 24 an instruction to turn on the power of the auxiliary storage devices 10-1 to 10-n via the input / output line 25.

The logic circuit 24 is the microcomputer 2
In response to the power-on instruction from 3, the control lines 24-1 to 24-n are all set to the low level (“L”). Then, current is input to the input side terminal T1 of the optical semiconductor relays 21-1 to 21-n via the current limiting resistors R1 to Rn, and the input current is input side terminal T2 of the relays 21-1 to 21-n. It is output from and input to the terminal T1 of the optical semiconductor relays 22-1 to 22-n. The current input to the terminal T1 of the optical semiconductor relays 22-1 to 22-n is the input side terminal T2 of the optical semiconductor relays 22-1 to 22-n.
Is output to the control lines 24-1 to 24-2. That is, by setting the control lines 24-1 to 24-n to a low level, a current flows to the input side of the optical semiconductor relays 21-1 to 21-n and 22-1 to 22-n.

Optical semiconductor relays 21-1 to 21-n, 22-1,
When a current flows through the input side of 22-n, its output side is turned on. As a result, the optical semiconductor relays 21-1 to 21-n
The DC voltage of + 5V supplied to the terminal T3 of the same and the DC voltage of + 12V supplied to the terminal T3 of the optical semiconductor relays 22-1 to 22-n are respectively supplied to the relays 21-1 to 21-.
It is supplied to the auxiliary storage devices 10-1 to 10-n through terminals T4 of 21-n and 22-1 to 22-n. In this way, the auxiliary storage devices 10-1 to 10-n can be driven. (B) At the time of replacing the auxiliary storage device Next, the operation at the time of replacing the auxiliary storage device will be described.
The case of exchanging 0-1 will be described as an example.

First, the maintenance worker is required to operate the auxiliary storage device 10-1.
When the auxiliary storage device 10-1 is to be replaced due to the failure of the above, or regular replacement, the console terminal 30 is used to input an instruction (power-off instruction) for turning off the power of the auxiliary storage device 10-1. . This allows the console terminal 3
From 0, a power-off command for instructing the power-off of the auxiliary storage device 10-1 is issued to the microcomputer 23 in the online exchange control device 20.

When the microcomputer 23 receives from the console terminal 30 a power-off command instructing the power-off of the auxiliary storage device 10-1, it instructs the logic circuit 24 to
An instruction to turn off the power of the auxiliary storage device 10-1 is given through the input / output line 25.

The logic circuit 24 is the microcomputer 2
In response to a power-off instruction of the auxiliary storage device 10-1 from 3
Only the control line 24-1 of the control lines 24-1 to 24-n is set to the high level (“H”). Then, unlike the previous case where the power is turned on, the input currents of the optical semiconductor relays 21-1 and 22-1 stop flowing, and the output side thereof is turned off. As a result, the + 5V and + 12V supplied to the auxiliary storage device 10-1 from the terminals T3 of the optical semiconductor relays 21-1 and 22-1.
Both DC voltages are cut off. In this power supply voltage cutoff state, the maintenance worker removes the old auxiliary storage device 10-1 and mounts the new auxiliary storage device 10-1 for replacement work.

At this time, the optical semiconductor relays 21-1 and 22-1
Since a current still flows to the input side of the optical semiconductor relays other than -1 and the output side is in the ON state, the auxiliary storage devices other than the auxiliary storage device 10-1 can continue to operate. Further, since the input and output of the OFF-controlled optical semiconductor relays 21-1 and 22-1 are insulated from each other, the auxiliary memory does not have an influence on the system due to chattering noise caused by the OFF control (DC voltage interruption). Replacement work of the device 10-1 can be performed online.

After installing the new auxiliary storage device 10-1, the maintenance worker uses the console terminal 30 to install the auxiliary storage device 10-1.
-Enter the instruction to turn on the power of -1 (power-on instruction). As a result, from the console terminal 30 to the microcomputer 23 in the online exchange control device 20.
A power-on command for instructing power-on of the auxiliary storage device 10-1 is issued.

When the microcomputer 23 receives a power-on command for instructing the power-on of the auxiliary storage device 10-1 from the console terminal 30, the microcomputer 23 instructs the logic circuit 24 to
An instruction to turn on the power of the auxiliary storage device 10-1 is given through the input / output line 25.

The logic circuit 24 is the microcomputer 2
In response to a power-on instruction of the auxiliary storage device 10-1 from 3
The control line 24-1 is set to the low level (“L”). Then, a current again flows into the input sides of the optical semiconductor relays 21-1 and 22-1, and the output sides thereof are turned on, and the auxiliary storage device 10 is turned on.
Both + 5V and + 12V DC voltages are supplied to -1.

The logic circuit 24 monitors the state of the control lines 24-1 to 24-n controlled by itself and notifies the microcomputer 23 of the state. From the state of the control lines 24-1 to 24-n, the microcomputer 23
The operation / connection state of the auxiliary storage devices 10-1 to 10-n can be grasped. The operation / connection state of the auxiliary storage devices 10-1 to 10-n grasped by the microcomputer 23 is determined by the maintenance worker using the console terminal 30.
-1 to 10-n is displayed on the console terminal 30 by performing a request operation for displaying the status.

Although the above description has been made of the case where the present invention is applied to the online exchange control device for online exchange of the auxiliary storage device, the present invention receives at least one kind of DC power source generated based on the system power source. It is applicable to all online exchange control devices for online exchange for a plurality of driven peripheral devices.

[0031]

As described above in detail, according to the present invention,
An optical semiconductor relay with insulated input and output is provided for each peripheral device for each required DC power supply, and each optical device corresponding to the specified peripheral device is provided according to the power-on / off instruction input from the input means. The semiconductor relays are selectively turned on / off to control the power of specified peripherals to be turned on / off. Therefore, the system can be downsized, and the power on / off of each peripheral can be controlled by chattering noise. It is possible to replace the target peripheral device without being affected by noise and to improve the system operation rate, MTTR (Mean Time To Repair) and reliability. Can be achieved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration centering on an online exchange control device provided in an information processing device according to an embodiment of the present invention.

[Explanation of symbols]

10-1 to 10-n ... Auxiliary storage device (peripheral device), 20 ... Online exchange control device, 21-1 to 21-n, 22-1 to 22
-n ... optical semiconductor relay, 23 ... microcomputer (control means), 24 ... logic circuit, 24-1 to 24-n ... control line,
25 ... I / O line, 30 ... Console terminal.

Claims (1)

[Claims] 1. An information processing apparatus comprising a plurality of peripheral devices driven by receiving at least one kind of DC power source generated from a system power supply, wherein each of the peripheral devices is required to drive the peripheral device. Optical semiconductor relay in which input and output are provided separately for each DC power supply, and which is turned on / off according to the current condition on the input side to control supply / shutdown of DC power supply to the corresponding peripheral device An input unit for inputting a power on / off instruction for each of the peripheral devices; and the optical semiconductor corresponding to the specified peripheral device according to the power on / off instruction input from the input unit. An information processing apparatus, comprising: a control unit that controls ON / OFF of a relay.