JPH06202766A - Power source controller - Google Patents

Abstract

PURPOSE:To prevent the down of an entire system even when one power source controller breaks down by connecting a transmission line to the power source controller only within a prescribed time in the power source controller provided before plural data processors which controls a power source. CONSTITUTION:A power source controller 3 transfers the data through a transmission line 2 to which plural data processor 1 are connected, and controls the power source provided between the data processors 1. When a clocking means 4 counts a preliminarily set time, a power source controller monitoring device 5 detects whether or not the power source controller 3 is normally operated, and when the power source controller 3 is normally operated, the transmission line 2 is connected the power source controller 3 by a connection control means 6, and the monitor of the data from the transmission line 2 is started by a power source request monitoring means 7. When the received data are a power source supply request command, the power source of the data processor 1 is turned into a power source supply state, and the data processor 1 is activated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a power supply for a workstation, a file server, a print server, etc., which are connected to each other via a transmission line, based on an instruction from another data processing device at a remote place via a network. A power control device that can be turned on. In recent years, there has been an increasing demand for powering a predetermined data processing device from a remote location. However, since it is necessary to receive a command while the power of the data processing device is off, the power of the data processing device is controlled. Power control devices have been developed and are in use.

A power supply control device is a device having an interface control with a communication control unit and a power supply control unit of a predetermined data processing device. With the recent rapid progress of networks, various power supply control devices are connected to various networks and various Support for communication procedures is being requested.

[0003]

2. Description of the Related Art For example, a large number of computers have been installed and used for business in counter services of banks and securities. LANs for multiple computers, especially data processing devices
It is a system that can be freely exchanged between data processing devices by connecting with (local area network).

Remote maintenance, which is performed between the master data processing device and the slave data processing device in response to an instruction from the host to upgrade the software of these data processing devices, ends the work because it interferes with the work in the daytime. It is held at night time. In the conventional remote maintenance method, all the data processing devices are returned to their homes while the power is on, and a remote maintenance start instruction is received from the host computer at night to upgrade the software level.

However, when the remote maintenance is completed, it is necessary to turn off the power in order to ensure safety in disaster prevention, and the person in charge must remain until the remote maintenance is completed. Therefore, in a system in which a plurality of data processing devices are connected via a LAN, it is desirable that the power can be turned on and off automatically as needed.

Therefore, a power supply control device has been developed which can control the power supply of the data processing device at a remote location. In such a system, the power-on data processing device via the LAN transmits a power-on command to another data processing device whose main power supply is in the off state, and the data processing device Main power is on.

Such power-on control is, for example, a case where the master side is recognized and the slave side is powered on in the first power-on work in the morning. FIG. 4 shows a connection form of a conventional power supply control device. Figure 4
2, the power-on request from the master data processing device 41 enters the power supply control device 25 through the transceiver 42, the LAN cable 43, and the connector 21, and the power supply control device 25 decodes the power supply request to the slave data processing device 24. After sending the input command and starting the slave data processing device 24, the slave data processing device 24 is connected to the master data processing device 41 via the communication control unit 22.

In this way, the master data processing device 41 and the slave data processing device 24 connected to each other are separated from the master data processing device 41 by the slave data processing device 24.
A program for remote maintenance is sent to, and remote maintenance is being performed. next,
The slave data processing device 24 sends a program for remote maintenance to the slave data processing device 54, and the slave data processing device 34 sends the program for remote maintenance to the master data processing device 4.
Send to 1.

Further, the slave data processing devices 24, 54
Are transceivers 21, 51, power supply control devices 25, 55
Is always connected to the LAN cable 43 via. The data transfer in the system will be described below. First, the slave data processing device 24 determines whether or not the data sent from the master data processing device 41 via the LAN cable 43 is addressed to itself, and if it is addressed to itself, the data is taken in. To process. If it is not addressed to itself, the data is sent as it is to the slave data processing device 54 on the downstream side.

Secondly, when it is desired to send the same data from the master data processing device 41 to a plurality of slave data processing devices 24 via the LAN cable 43, the sent data is once taken in and simultaneously processed. , And sends the same data to the downstream slave data processing device 54. Thirdly, when the slave data processing device 24 sends data to the master data processing device 41, the slave data processing device 24 obtains permission to use the LAN cable 43, dedicates the LAN cable 43, and sends the data. .

[0011]

However, in a system in which a plurality of data processing devices are connected by a LAN cable via a plurality of power supply control devices, the abnormality of a certain device easily spreads over the entire transmission line. In other words, if one power supply control device or data processing device has a failure in each part in the circuit such as a short circuit or a disconnection that is presumed to be caused by static electricity, etc., all other normal data processing devices that use the LAN. It may make communication impossible. Therefore, it is necessary to promptly detect the abnormality and deal with it.

The present invention has been made in view of such a conventional problem, and a power supply that does not bring down the entire system even when one power supply control device fails. The purpose is to provide a control device.

[0013]

FIG. 1 shows the principle of the present invention. In the figure, reference numeral 1 is a data processing device such as a data processing device, a file server, a print server or the like. Reference numeral 2 is a transmission line such as a LAN cable. 3 is a power supply control device, which is a timekeeping means 4 for measuring time, a power supply control device monitoring means 5 for detecting whether or not the power supply control device 3 is normal, a transmission line 2 and a power supply when the data processing device 1 is stopped. Connection control means 6 for disconnecting from the control device 3, power supply request monitoring means 7 for monitoring the data transmitted from the transmission line 2 and activating the power supply to the data processing device 1 when a power-on request command is detected in the data. Have.

[0014]

When the power supply of the data processing device 1 is not turned on, the transmission line 2 and the power supply request monitoring device 3 are separated by the connection control means 6. When the time counting means 4 counts the preset time, the power supply control device monitoring means 5 detects whether or not the power supply control device 3 is normal, and if normal, the connection control means 6 causes the transmission line to be transmitted. 2 is connected to the power supply control device 3, and the power supply request monitoring means 7 starts data monitoring from the transmission line 2. If the received data is a power-on request command, the power of the data processing device 1 is turned on and the data processing device 1 is activated.

As described above, the transmission line 2 and the power supply control device 3 are not connected except for a predetermined time, and
Even when the power control device of the stand is abnormal, it is possible to prevent the entire system from going down.

[0016]

Embodiments of the present invention will now be described in detail with reference to the drawings. A configuration diagram of the power supply control device is shown in FIG. Figure 2
In the reference numeral 26, a line switching unit is provided on the communication control unit 22 side of the slave data processing device 24 or on the power supply control device 25.
The line is switched to the control unit 27 side. Reference numeral 28 is a line connection unit, which connects the line to the connector 21 side or the driver / receiver side by a signal from the MPU 38, and the data sent from the connector 21 while being connected to the connector 21 side is reconnected to the connector. Repeat at 21. Two
A driver or a receiver 9 is provided between the connector 21 and the line connecting portion 28. Reference numeral 31 is a serial-parallel converter which receives RD (reception data) from the bus 32, converts it to parallel data and sends it to the bus 33, and receives SD (transmission data) from the bus 33 and converts it to serial data. Then, the data is sent to the bus 32. Reference numeral 34 is a LAN control unit, which is C
S (transmission possible), CD (data channel reception carrier detection), DR (data set ready), CI (callee display), ST2 (transmission signal element timing), RT
(Received signal element timing), etc. Connector 2
1 from each signal and H from the slave data processing device 24
Upon receiving the ER (data terminal ready) signal, the connector 21 receives ER (data terminal ready), RS (transmission request),
Each signal such as ST1 (transmission signal element timing) is transmitted. Reference numeral 35 is a line switching control unit, which is a line switching unit 26.
To control. A power control unit 36 sends a power-on command to the power supply 23 of the slave data processing device 24. A main memory 37 is provided in the control unit 27.
Reference numeral 38 is a real-time clock, which measures time and sends the measured time to the MPU 39. A microprocessor (MPU) 39 controls each unit of the control unit 27. Four
A line connection control unit 0 controls the line connection unit 28.

Reference numeral 30 is a control unit provided in the slave data processing device 24, and 42 is an interface unit.
It is configured by a shared RAM between the MPU 39 and the CPU of the control unit 41, and sets the power-on time from the slave data processing device 24 to the power supply control device 25 and notifies the slave data processing device 24 of an error state from the power supply control device 25. Used for.

Reference numeral 22 denotes the communication control unit 22 provided in the slave data processing device 24. The HER signal of the communication control unit 22 enters the LAN control unit 34 and the MPU
39 recognizes this and sends a line switching command to the line switching control unit 35, and the line switching control unit 35 switches the switch of the line switching unit 26 from the B contact to the A contact. FIG. 3 shows an operation flow of the entire system using the power supply control device. Figure 4
An operation flow of the MPU in the power supply control device is shown in FIG.

First, the operation in normal work will be described. The operator uses the slave data processing device 24 including a display unit and a keyboard (not shown),
Carry out ordinary work by performing work such as entry of transaction data necessary for bookkeeping and deposit / withdrawal transactions. When there is remote maintenance at night, the keyboard is used to input the time at which remote maintenance will be performed.

The slave data processing device 24 receives the set time input before the main power of its own device is turned off to the power supply control device 25 via the interface section 42. Next, the operation in remote maintenance will be described.
When the real-time clock 38 detects a preset time (step 1), does the function of each unit operate normally with respect to the LAN control unit 34, the serial-parallel converter 31, and the driver / receiver 29 in the control device 25? Is instructed to perform a test by transmitting and receiving a return signal (step 2).

The MPU 39 is a LAN control unit 3
4, serial-parallel converter 31, driver / receiver 29
In response, a return signal is transmitted and received to determine whether the function of each unit operates normally (step 3). As a result of the test, when an abnormal operation is detected (step 4), the LAN cable 2 and the power supply control unit 25 are left in a separated state, and a switch provided in the power supply of the slave data processing device 24 is further set. As soon as the operator turns on the power and the power is turned on, the power supply control device 25 sends a notice to the control unit 30 of the abnormality and notifies the operator (step 5).

As a result of the test, when the normal operation is detected (step 4), the transmission and reception of the return signal to the LAN controller 34, the serial-parallel converter 31, and the driver / receiver 29 are canceled (step 4). 6), M
READ / whether the function operates normally for EM37
Test with WRITE operation (step 7). As a result of the test, if an abnormal operation is detected (step 8), LA
The N cable 2 and the power supply control unit 25 are kept in the separated state, and further, the operator turns on the switch provided in the power supply of the slave data processing device 24, and as soon as the power supply is turned on, the power supply control device 25 becomes abnormal. A message to that effect is sent to the control unit 30 to notify the operator (step 5).

As a result of the test, when the normal operation is detected (step 8), it is tested by the READ / WRITE operation whether the function normally operates with respect to the real-time clock 38 (step 9). As a result of the test, when an abnormal operation is detected (step 10), the LAN cable 2 and the power supply control unit 25 are left in a separated state,
Further, the operator turns on a switch provided in the power supply of the slave data processing device 24, and as soon as the power supply is turned on, the power supply control device 25 sends an error message to the control unit 30,
Notify the operator (step 5).

As a result of the test, when the normal operation is detected (step 10), a line connection command is sent to the line connection control unit 40, and the line connection control unit 40 switches the switch of the line connection unit 28 from the A contact to the B contact. Connect to (Step 1
1). As a result, the data that has been looped back between the connector 21 and the line connection unit 28 is taken into the control unit 27.

When the LAN cable 43 and the power supply controller 25 are connected, a transmission control procedure is performed. Here, as an example, the BSC procedure is used as the transmission control procedure. When the power-on command WRITE is issued to the communication control program by the application program of the master data device 41, the communication control program sends the control character CR-TP to the LAN cable.
Send DU (query).

When the power-on command is received, the power supply control device 25 responds to this CR-TPDU with a DR-TPDU (acknowledge response to transmission standby request) and repeats this. For the third CR-TPDU, the power supply control device 25 issues a power-on command to the hardware of the electronic computer 24. After this, until the line is switched, that is, until the master data processing device 41 and the slave data processing device 24 are directly connected via the reply line, the power supply control device 25 makes DR- to the CR-TPDU of the master data processing device 41. TP
Repeat the DU response.

The slave data processing device 24 is an IPL.
(Initial program loading), confirm normality by self-diagnosis, and start communication control program and application program. When the application program starts up, an open (OPEN) command is issued to the communication control program, and then the communication control program issues an enable command (ENABLE COMMAND) to the hardware. The hardware issues a connector signal ER (here, HER) to the power supply control device 25, and the power supply control device 25 switches the line in response to this signal.

When the line is switched, the CR-TPDU from the master data unit 41 directly enters the slave data processing unit 24, and the slave data processing unit 24 responds to this CR-TPDU with an ACK. The data processing device 41 and the slave data processing device 24 are L
Information is exchanged via the AN cable. The slave data processing device 24 completes the exchange of information (step 12), notifies the MPU 39 of the fact via the interface section 42, and turns off the main power supply of the slave data processing device 24.

The MPU 39 includes a power supply control device 25 and a LAN.
The line to the cable 43 is disconnected (step 13), and when the set time is being enjoyed by the slave data processing device 24 (step 14), the set time is stored in the MEM 37 (step 15). The power supply control device 25 in the above embodiment has been described separately from the slave data processing device 24, but the power supply control device 25 may be provided in the slave data processing device 24.

[0030]

As described above, according to the present invention,
It is not necessary to leave the power of the data processing device turned on for remote maintenance, and even if the device fails during remote power control in the unattended state at midnight, connect the failed device to the system. Not because
It greatly contributes to the operation of a reliable and safe system that does not cause a fire, data destruction, or system downtime.

[Brief description of drawings]

FIG. 1 is a principle diagram of the present invention.

FIG. 2 is a configuration diagram of a power supply control device.

FIG. 3 is a diagram showing an operation flow of the entire system using a power supply control device.

FIG. 4 shows an operation flow of an MPU in the power supply control device.

FIG. 5 shows an operation flow of the MPU in the power supply control device.

FIG. 6 is a diagram showing a connection form of a conventional power supply control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Data processing device 2 ... Transmission path 3 ... Power supply control device 4 ... Timekeeping means 5 ... Power supply control device monitoring means 6 ... Connection control means 7 ... Power supply control request monitoring means

Claims (1)

[Claims] 1. A transmission path (2) to which a plurality of data processing devices (1) are connected, and a data processing device (1) for exchanging data via the transmission path (2). In a power supply control device for controlling another power supply, a time measuring means (4) for measuring time and a detection of whether or not the power supply control device (3) is normal at a predetermined time by the time measuring means (4). The power supply control device monitoring means (5) for performing, and the power supply control device (3) when the power supply control device (3) is determined to be normal, the transmission path (2) and the power supply control A device (3) is connected to the transmission line (2) when the data processing device (1) is stopped.
Connection control means (6) for disconnecting the power control device (3) from the
And the connection control means (6) monitors the data transmitted from the connected transmission path (2), and when the power-on request command is detected in the data, the data processing device (1) is sent to the data processing device (1). It has a power supply request monitoring means (7) for starting a power supply, the clocking means (4), the power supply control device monitoring means (5), the connection control means (6), and the power supply request monitoring means (7). A power supply control device comprising the power supply control device (3).