JP2559693B2 - Power supply control device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a power supply control device that manages turning on or off of power to one or a plurality of connected electronic devices by remote control or the like.

[Prior Art] A power supply control device is often used to centralize management of power-on of one or more electronic devices. This type of power supply control device has a switch that turns on all electronic devices at once when the switch is turned on (hereinafter, such a switch is referred to as a collective power-on switch). Or, for example, by a command signal from the outside via a communication line or the like, a connection device that has issued the command signal (an electronic device or the like that is connected to a power supply control device and receives a power supply or power supply control instruction ) Is to start supplying power.
On the other hand, regarding the power-off, when the collective power-on switch is on, the power-off command from the connected device is ignored, but when the collective power-on switch is off, the connected device or communication line The power supply is stopped by a power-off command from the outside via the. That is, the ON state of the collective power-on switch has priority over the external power-off command.
However, with such a connected device, even if the batch power-on switch is off, the power can be turned on by an instruction signal from the outside, so the user can use it without noticing that the batch power-on switch is off. I have something to do. In such a case, there is a risk that the power supply may be cut off by a stop instruction signal due to a malfunction of the connected device or an unexpected stop signal from the outside.

[Problems to be Solved by the Invention] The present invention has been made in view of the above problems, and an object thereof is to provide a power supply control device in which a plurality of instruction systems for starting power supply are permitted. In this way, we propose a power supply control device that can prevent unexpected power failure of the power supply instruction source by changing the power supply stop processing depending on which command system has started power supply. To do.

[Means for Solving Problems] A power supply control device for controlling power supply to an electronic device or the like according to the present invention for achieving the above-mentioned object is a power supply control device for supplying or stopping power to the electronic device or the like. From the first instruction means or the second instruction means, the first instruction means for instructing the operation, the second instruction means for receiving an instruction from the outside and instructing to supply or stop the power supply to the electronic device or the like, Power supply means for supplying power to the electronic device or the like based on the power supply instruction, and when the power is supplied by the power supply means, which of the first instruction means and the second instruction means is the power source. Storage means for storing information indicating whether or not the supply instruction has been made, and the first instruction based on the information stored in the storage means when the second instruction means gives an instruction to stop the power supply. Finger from the means Stop the power supply when it is determined that the power is being supplied, and stop the power supply when it is determined that the power is being supplied according to the instruction from the second instruction unit. And a control means for controlling the power supply means.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. For example, a power supply control device 100 according to an embodiment shown in FIG. 1 includes a power supply start instruction receiving means 101 for receiving a plurality of power supply start instructions 105 and a selected power supply start instruction. By external electronic equipment
A power supply means 102 for starting power supply to 103 and the like, a holding means 104 for storing which power supply start instruction has been issued, and one or more from inside or outside of the power supply control device. Input the power supply stop instruction 107 of
Further, it has a power supply stopping means 106 at a place having a warning means 108.

In the above configuration, the operation of the power supply control device is roughly described as follows: one or more power supply stop instructions 107 from inside or outside the power supply control device after power supply to an external electronic device is started. When the input is input, the warning means 108 performs a predetermined warning operation according to the type of the power supply start instruction stored in the holding means 104, and then instructs the power supply means 102 to stop the power supply to the electronic device 103 and the like. To do.

Specifically, a power supply control device according to an embodiment of the present invention is a power supply control device that manages turning on or off of power to one or a plurality of connected electronic devices by, for example, remote operation. The power supply is stopped when the power supply is started by the instruction signal from the power supply control device before the power is turned off if the collective power-on switch for collectively turning on the electronic devices is off. Alerts the operator that the power will be cut off by performing a predetermined warning operation, for example, generating an alarm sound or sending an instruction to generate an alarm sound to the electronic device, and avoiding an unexpected power cut. Is.

A concrete embodiment of the present invention will be further described with reference to FIG.

FIG. 2 is a functional block diagram of an embodiment according to the present invention. FIG. 3 is a flow chart showing a control procedure according to the embodiment of the control unit of the embodiment.

In FIG. 2, 1 is a control unit, 2 is a power supply unit for supplying power to the power supply control device 10 and externally connected device 11, and 3 is power on / off for the connected device 11. A switch control unit for controlling, 4 is a power connector for the connection device 11, and 5 is a remote power-on signal from the outside.
12 is a receiver, 6 is a batch power-on switch (hereinafter referred to as a main switch for simplicity), 7 is an alarm sound generator, 8 is a timer, 9 is a timer 8 time setting dial. A supply control device 10 is configured. RAM 14, ROM 15 and the like are provided in the control unit 1, and an area for storing a flag RF described later is secured in the RAM 14.
Reference numeral 11 denotes a connection device such as a computer terminal, which itself is connected to a distant central computer or the like via a communication line or the like, and is also connected to the power supply control device 10, and the power supply control device 10 Powered by.

Next, the control procedure of the present embodiment will be described based on the flowchart of FIG. The control procedure is stored in the ROM 15 in the control unit 1.

First, the main switch 6 is turned on in step S1 or S2,
Alternatively, it waits for either the reception unit 5 to receive the remote power-on signal. In the case of the main switch 6, the RAM 1 in order to store that it is started by the main switch 6.
The flag RF in 4 is set to "0" (step S3). When the remote power-on signal is received, the flag RF is set to "1" in order to similarly store in the RAM 14 that the remote power-on is started (step S3). Connected device 11
The switch controller 3 is instructed to start power supply to the switch (step S5). As a result, the supply of power to the connected device 11 is started.

The control unit 1 then branches and operates according to the two stored startup states. First, when the main switch 6 is activated by turning it on (RF = 0), the steps from step S6 are started.
The process proceeds to S7, the search for turning off the main switch 6 is repeated, and if the main switch 6 is turned off, the power supply to the connection device 11 is cut off (step S8).

On the other hand, when the remote power-on is activated by receiving an external signal (RF = 1), the search for the power-off request (and / or the reception of the remote power-off signal from the outside) from the connection device 11 is repeated (step S1). S9), if such a power-off request is received, an alarm sound is generated from the alarm sound generator 7 (step S10), and the operator is informed of power-off. At the same time, the timer 8 sets the time from the power-off request set by the operator in advance on the time setting dial 9 to the power-off.
To start the timer 8 (step S11). Wait for the elapse of the time set in this timer 8 (step S1
2) Check the state of the main switch 6 (step S13). That is, if the operator decides that the connected device 11 should continue to be used and the power supply should be turned on within the time set in the timer 8, the operator will turn on the main switch 6. Further, by making the set time of the timer 8 variable, it is possible to freely set the time for ending the useless idle state in which the power supply of the connection device 11 is turned on but is not used, depending on the importance of work. There is no need to supply unnecessary power more than necessary.

If the main switch 6 is turned on by the switch S13, the process proceeds to a control routine (steps S7 and S8) for starting the main switch 6 by turning on the power until the main switch 6 is turned off. If the main switch 6 remains off in the switch S13, the power supply to the connection device 11 is stopped (step S14).

In the configuration of FIG. 2, the power supply unit 2 supplies power to the connection device 11 via the switch control unit 3 and the power supply connector 4, but another method, for example, sends a power-on control signal to the connection device. In this way, the power supply unit of the connection device which receives the control signal may control the on / off of the power supply.

[Effects of the Invention] As described above, according to the present invention, the first instruction means and the second instruction means are used for a plurality of instructions for starting the power supply.
In the case where there is a system, which instruction means has issued the power supply instruction is stored, and when the second instruction means instructs the power supply to be stopped, the control means, based on this storage, When it is determined that the power is supplied based on the instruction from the first instruction unit, the stop of the power supply is prohibited, and the power is supplied based on the instruction from the second instruction unit. When the determination is made, the power supply is controlled to be stopped, so that it is possible to avoid an unexpected power failure at the instruction source via the first instruction means.

[Brief description of drawings]

FIG. 1 is a principle block diagram of an embodiment according to the present invention, FIG. 2 is a functional block diagram of one embodiment, and FIG. 3 is a flow chart showing a control procedure according to the embodiment. In the figure, 1 ... control unit, 2 ... power supply unit, 3 ... switch control unit, 4 ... power supply connector, 5 ... receiving unit, 6 ... batch power-on switch (main switch), 7 ... alarm Sound generator, 8 ... Timer, 9 ... Time setting dial, 10,1
00 …… Power supply control device, 11 …… Connected device, 14 …… RA
M, 15 ... ROM, 101 ... Power supply start instruction receiving means, 102
...... Power supply means, 103 …… Electronic equipment, 104 …… Holding means, 1
05: Power supply start instruction, 106: Power supply stop means, 107
...... Power supply stop instruction, 108 …… Warning means.

Claims (4)

(57) [Claims] 1. A power supply control device for controlling power supply to an electronic device or the like, comprising: a first instruction means for instructing supply or stop of power to the electronic device or the like; Second instructing means for instructing the supply or stop of power to the electronic device and the like, and supplying power to the electronic device or the like based on the instruction to supply the power from the first or second instructing device And a storage unit that stores information indicating which of the first instruction unit and the second instruction unit has issued a power supply instruction when power is supplied by the power supply unit, In the case where the second instruction means gives an instruction to stop the power supply, based on the information stored in the storage means,
When it is determined by the instruction from the first instructing means that the power is being supplied, the stop of the power is prohibited, and the second
And a control means for controlling the power supply means so as to stop the power supply when it is determined that the power is supplied according to the instruction from the instruction means. 2. The power supply control device according to claim 1, wherein the control means performs a warning operation prior to the power stop when the power stop control is performed. 3. The control means performs a warning operation when the power supply stop instruction is an instruction from the second instruction means.
The power supply control device according to claim 1, wherein the power supply stop control is performed after a lapse of a predetermined time. 4. When the power supply stop instruction is an instruction from the second instruction means, the control means performs power supply stop control after confirming the stop instruction from the first instruction means. The power supply control device according to claim 1, wherein