JPS63217747A - Automatic power supply controller - Google Patents

Abstract

PURPOSE:To prevent unnecessary application of power supply for an equipment not applying data communication by applying the power supply to a power supply controller to be controlled automatically by the reception of a data link establish sequence from an opposite station to perform data transmission/ reception. CONSTITUTION:At the reception section 14, receiving a data link establish sequence addressed to its own station based on the content set by a line speed/ synchronizing system/network address setting section 15, the automatic power supply controller 11 gives a power supply application command to an object device 18 subjected to automatic power supply control via a signal line 17 to supply the power. If a data monitoring section 16, after application of power supply to the device 18, does not detect a sent data 13 from the device 18 within a time set by a timer device, the section 16 disconnects the power to the device 18 by the power interruption command via the signal line 17. When an ER signal OFF from the device 18 is detected, the power of the device 18 is inter rupted by the power interruption command via the signal line 17. Thus, the application of the power not participating in the data communication is avoided and the unnecessary power application is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic power supply control device that automatically controls the power supply of a device that performs data communication.

[Conventional technology]

Conventionally, this type of automatic power control device has controlled power on and off using a modem signal that is an electrical signal. In other words, the conventional automatic power supply control device is a CD (Carry
Detect) When the rising edge of the signal is detected,
When the power to the automatic power control device is turned on and the CD signal remains off for a certain period of time, or when the E R (Equipment Ready) signal of the automatic power control device turns off, the power to the automatic power control device is turned off. was disconnected.

[Problem that the invention seeks to solve]

The conventional automatic power control device described above performs power on/off control by detecting changes in a modem signal, which is an electrical signal. For this reason, there is a drawback that it is not possible to selectively control the power of only the device subject to automatic power control that performs data communication.

In other words, all devices connected to one line that are subject to automatic power control are subject to automatic power control, and even devices that do not perform data communication are powered on.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an automatic power control device that can select a target device for power-on and avoid unnecessary power-on of devices that do not perform data communication. It is in.

[Means for solving problems]

The present invention provides an automatic power control device located between a modem device or a DC branch device and a device to be automatically controlled, which (i) has the same network address as the device to be automatically controlled; (11) a timer mechanism for timing an arbitrarily settable time; It has a monitoring mechanism that constantly monitors the transmitted data of the automatic power control target device, and after the power is turned on to the automatic power control target device, the monitoring mechanism detects the transmitted data from the automatic power control target device within the time set by the timer mechanism. means for cutting off the power to the device to be automatically power controlled, or when the ER signal off from the device to be controlled by the automatic power source is detected.

As described above, in the present invention, the automatic power control device is powered on by receiving a data link establishment sequence from the partner station with which data is to be transmitted and received. Therefore, it is possible to select a device to be powered on, and it is possible to avoid unnecessary power-on of a device that does not perform data communication. In addition, after the power is turned on, the presence or absence of transmission data from the device subject to automatic power supply control that has been powered on is constantly monitored, and if no transmission data is detected within the set time, or if an ER from the device subject to automatic power supply control is detected. Since the power to the device subject to automatic power control is cut off when a signal off is detected, unnecessary power is cut off to devices subject to automatic power control that do not perform data communication or are unable to perform data communication due to some kind of failure. A power-on state can be avoided.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

First, FIG. 2 shows the connection relationship of an online system to which the present invention is applied.

In the figure, a host 1 as a control station that transmits a data link establishment sequence transmits a data link establishment sequence ( polling or selecting sequence) on modem 3, line 4, modem 5,
Automatic power supply control device 7-1~? via DC branch device 6? −
can be supplied for n. This allows the automatic power supply control device 7 corresponding to the destination to turn on the power of the corresponding automatic power supply control target device 2 .

Here, the automatic power supply control devices 7-1 to 7-n are located between the DC branching device 6 and the devices to be automatically controlled by power 2-1 to 2-n, and are located between the devices to be controlled by automatic power source 2-1. It has the same network address (1 to n) as ~2-n, and has a one-to-one correspondence. Note that the DC branching device 6 is omitted, and the output of the modem 5 is connected to each automatic power supply control device 7-1 to ? -n may be supplied.

As an example, it is assumed that the host 1 performs data communication only with the automatic power control target device 2-n. In this case, the host) 1 sends a data link establishment sequence addressed to the automatic power control target device 2-n as before, but the automatic power control device? -n
determines that the received data link establishment sequence is addressed to its own station, and turns on the power of the automatic power control target device 2-n.

In this case, automatic power supply control device 'l-1~? -(TI-1
), the received data link establishment sequence is not addressed to the local station, so the corresponding automatic power control target device 6
-1 to 6-(n-1) are not turned on.

Next, FIG. 1 shows a block diagram showing an embodiment of the automatic power supply control device of the present invention.

In the figure, an automatic power supply control device 11 corresponds to each of the automatic power supply control target devices 7-1 to 7-n in FIG. The automatic power control target devices 18 correspond to the automatic power control target devices 7-1 to 7-n in FIG. 2, and the automatic power control device 11 is the automatic power control target device 7-n in FIG. If so, the device 2-71 to be automatically power controlled in FIG.
This corresponds to

The automatic mode/manual mode switching unit 12 is configured so that the automatic power control function does not operate in the manual mode, and performs the following automatic power control only in the automatic mode.

That is, when the receiving section 14 receives a data link establishment sequence addressed to the own station based on the line speed, synchronization method, and contents set in the network address setting section 15, the automatic power control device 11 uses the power-on means to connect the signal line 17. A power-on command is issued to the automatic power-controlled device 18 via the device 18, and the power is turned on.

The data monitoring unit 16 serving as a power cutoff means has a monitoring mechanism that constantly monitors the presence or absence of transmission data from the device 18 subject to automatic power supply control, and a timer mechanism that measures an arbitrarily set time. After the automatic power control target device 18 is powered on, if the transmission data 13 from the automatic power control target device 18 is not detected within the time set by the timer mechanism described above, the power is supplied via the signal line 17. The power to the automatic power control target device 18 is cut off by the cutoff command. Furthermore, when the automatic power supply control device 11 detects that the ER signal from the automatic power supply control target device 18 is turned off, the automatic power supply control device 11 also cuts off the power to the automatic power supply control target device 18 by issuing a power cutoff command via the signal line 17. .

As can be seen from the above description, in this embodiment, the automatic power control target device is powered on by receiving a data link establishment sequence from the partner station with which data is to be transmitted and received. Therefore, you can select the target device to power on without creating a new interface for automatic power control between the partner station and avoid unnecessarily powering on devices that do not perform data communication. can be used.

In addition, after powering on the device 18 subject to automatic power control, the presence or absence of transmission data 13 from the device 18 subject to automatic power control is constantly monitored, and if the transmission data 13 is not detected within a set time, the automatic power control target device 18 is automatically Since the power to the power-controlled device 18 is turned off, unnecessary power-on can be avoided.

In other words, if the other station opens line by line (if the data link establishment sequence is sent even to a device that does not perform data communication) or if some failure causes the device 18 subject to automatic power supply control to perform data communication. If it is not possible to do so, the power will be turned on once, but since it is an unnecessary power-on, the power will be turned off when no transmission data from the device 18 subject to automatic power control is detected within the set time. By doing so, you can avoid unnecessary power-on states.

In addition, during offline operation (manned operation), automatic mode 7 is selected.
If the manual/dynamic mode switching unit 12 is set to manual mode, the automatic power control as described above will not work, and the device can be used with peace of mind.

〔Effect of the invention〕

As described above, according to the present invention, since the automatic power control target device is powered on by receiving a data link establishment sequence from the partner station that performs data transmission and reception, there is no communication between the target station and the partner station for automatic power control. It is possible to select a device to be powered on without newly setting up an interface, and it is possible to avoid unnecessary powering on devices that do not perform data communication. Further, according to the present invention, after the power of the automatic power control target device is turned on, the presence or absence of transmission data from the automatic power control target device is constantly monitored, and when the transmission data is not detected within a set time, or When the ER signal off from the automatic power control target device is detected, the power to the automatic power control target device is cut off.
It is possible to avoid unnecessary power-on states of devices that do not perform data communication or devices that are subject to automatic power control that cannot perform data communication due to some kind of failure.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an automatic power supply control device according to the present invention, and FIG. 2 is a diagram showing the connection relationship of an online system to which the present invention is applied. 1...Host, 2-1 to 2-n, 3.5...Modem, 6...
...DC branch device, 7-1 to 7-n, 11... Automatic power supply control device,
18... Device subject to automatic power control.

Claims (1)

[Claims] 1. In an automatic power control device located between a modem device or a DC branch device and a device to be automatically controlled,
means for turning on the power of the automatic power control target device when a data link establishment sequence addressed to the automatic power control target device having the same network address as the automatic power control target device is received, and an optional setting; It has a timer mechanism that measures the time when the automatic power supply control target device can be controlled, and a monitoring mechanism that constantly monitors the transmission data from the automatic power control target device, and within the time set by the timer mechanism after the automatic power control target device is powered on. when the monitoring mechanism does not detect transmission data from the automatic power control target device, or when an ER signal off from the automatic power control target device is detected, the automatic power control target device An automatic power supply control device characterized by comprising: means for cutting off the power supply. 2. The automatic power control device according to claim 1, which has a switching section between automatic mode and manual mode, and is configured such that the automatic power control function does not operate in manual mode.