JPS5812033A - Automatic centralized managing device for power supply - Google Patents

Abstract

PURPOSE:To perform effective centralized management, by providing a centralized managing device between each device and each CPU, in a device for centralizingly managing the application/disconnection of the power supply to/from each device. CONSTITUTION:A centralized managing device 4 is provided between devices D1-D7 and CPUs 1-3. When a control signal from the CPUs 1-3 to the centralized managing device, the devices D1-D7 registrated in the CPUs are controlled for the application/disconnection of power supply according to the priority. Thus, the management of power supply application/disconnection for a complicated multi-computer system can be simplified, and useless systems can be saved and cost-down can be attained.

Description

[Detailed description of the invention] The present invention includes multiple computers, drums, and disks.

The present invention relates to an automatic power supply central control system for centrally managing power on/off for individual devices when a large number of devices such as magnetic tapes are shared.

In recent years, as the functions of computer systems have become increasingly distributed, it has become increasingly common for multiple computers to share (one or all of) a large number of devices (disks, drums, magnetic tapes, typewriters, CRTs, etc.) at the same time.

In this case, one computer (hereinafter abbreviated as CPU)
When a device is started or stopped, all devices connected to it need to be started/stopped (specifically, powered on/stopped) at the same time.

Rattan l■ is an explanatory diagram of the conventional system, and in this example, three C
There are P U (CPU1.CPU2, CPU3) and seven devices, each CPUI is device DI, D2
゜DI, D? Km! CPU2 is controlled by device D l
# D2 aDS, D4. Dll, connected to DI, C
PU3 is the device Dl, D3. D5. DI and D7 are connected. In the case shown in this figure, each CPU independently has the function of turning on/off power to each device, and each CPU individually manages connected devices.

However, the conventional method of such a configuration is (1)
There is a limit to the number of devices that one CPU can manage due to standardization, and increasing the number of devices will be wasteful and increase costs.

(2) There are complications and contradictions when the same device is managed by multiple CPUs.

(3) Power-on control signal cables must be connected from all related CPUs.

It had the following drawbacks.

The present invention has been made in view of the above circumstances, and each device and each CP
A power supply automatic central control device JE that does not have the above-mentioned drawbacks, which has one central control device between U and centrally controls all power-on and power-down of devices: Providing 8! target

Hereinafter, the present invention will be explained with reference to the drawings. The second figure shows an embodiment of the present invention, and since the same reference numerals as those in FIG. 1 are the same, the explanation will be omitted. In the figure, reference numeral 4 denotes an automatic power supply central control device (hereinafter referred to as a central control device) of the present invention, and this device includes an independent small-sized computer. A control signal line (a
, b, and c) are connected, and a power-on/stop signal cable and a status confirmation signal cable are connected between the central management device 14 and each device, respectively.

This device has a control signal for each CPU and a corresponding control signal to be powered on/stopped, in other words, a group of devices to be powered on/stopped in advance along with a control signal connected to a certain CPU. It can be registered (in the embodiment, it is a manual set on a bin board). In the CPU-device connection example shown in FIG. 81, states such as 1!74 O marks are stored.

(Table 1) In Table 1, O mark indicates operation, × indicates stop operation, and O mark indicates each CP.
UIC* Represents connected devices, one CP
When U (for example, CPU3) starts up, its control signal goes to O.
When N is entered into the central management device 4, the devices registered in the CPU 5 are prioritized (this is the power-on order determined in advance for all devices).
Accordingly, a power-on designation is output to the connected devices, and the power is sequentially turned on. The operating status of each device is constantly managed by status confirmation signals from each device.

This first IIE shows this state, and CPU3
In the case where only the system control signal is ON, all the information is stored in the central management device 4.

(iv) When there is a new control signal change (OFF→ON): (1) If the target device is already in operation,
Just like that.

(11) If the target device is stopped, output a power-on output, check the device confirmation signal (OFF→ON), and store it. Second! ! Table 1 shows the case where the CPU control signal newly changes from OFF to ON, which means that the device D2 is newly activated.

<WtX*> However) Next, a new control signal change (ON→o I8
'p), the (+) target device (naturally operating status M) is connected to another CP.
If the device is the target device of U, in this case, it is checked whether the control signal of the CPU is ON or 0FFTh. ON
If it is, this device is being used by another CPU, so leave it as it is (do not stop the power supply). If it is OFF, issue a power stop command to this device and check the device confirmation signal (ON → 0FF). and store the operating status m.

(11) If the target device is targeted by another CPU, but only this CPU is the target device, in this case, as in the case of OFF above, issue a stop command, confirm with a confirmation signal, and check the operating state. to be memorized.

The 31st II is a case where the control signal of CPU3 newly changes to ON - + OFF F from the 1s2 table, only the CPU system control signal is ON, and devices D3 and D6 are newly changed.
indicates a stopped state.

(Table 3) Next, other embodiments of the present invention will be described. In other words, (1) In the above embodiment, the configuration is a computer and its device group, but in other devices, a child device that starts up in conjunction with a parent device is shared by multiple parent devices. A similar method can be applied to a group of devices.

(it) It is possible to incorporate a temporal schedule into the device priority order and input the sequence.

(Incorporated) In the above embodiments, the present apparatus was controlled by a microcomputer, but it can also be controlled by a hardware circuit.

As is clear from the above description, the present invention simplifies the power-on/stop layer of a complex multi-point counter system, eliminates waste in the system, and reduces costs. We can provide automatic power supply centralized control equipment.

4.l! tile simple wi man No. 1 II is an explanatory diagram of the conventional power on/stop method, No. 2 m
1 is a block diagram showing an embodiment of the automatic power supply central control device of the present invention.

1.2.3... Computer, 4... Automatic power supply central control device, Dl, D7... Device, a, b, c... Control signal.

(7317) Representative Patent Attorney Kensuke Norichika (and 1 other person) 1st
Figure 2

Claims (1)

[Claims] In a plurality of computer systems sharing a large number of devices such as drums, disks, magnetic tapes, etc., there is a function for receiving a plurality of power-on/stop request control signals, and a group of devices to be turned off by the control signal. It has an independent small computer with a storage function for registering and a function for receiving and storing the operating status of all the devices, and powers on the device with the highest priority in response to a change in the status of the control signal. , an automatic power supply central control device characterized by cutting off the necessity of stopping, automatically turning on and stopping the power, and checking the operating state.