JP2004140980A - Power feed control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power feed control device that can change only a power feed state to a main device, as necessary, without changing the setting of a timer apparatus. <P>SOLUTION: The power feed control device comprises: a business broadcasting device 10 to which power is fed from an external power supply; the other apparatus 2 to which power is fed via a power feed apparatus 3; and the timer apparatus 4 that controls power feeds to a business broadcasting device 10 and the power feed apparatus 3 so as to be started at a prescribed time, and to be stopped at a different prescribed time. The business broadcasting device 10 comprises a temporary changeover switch 1b, that manually starts or stops the power feed to the own device, irrespective of the setting sate of the timer apparatus 4. The power feeds to the business broadcasting device 10 and the power feed apparatus 3 are normally turned on/off by the timer apparatus 4 at a prescribed time. By operating the temporary changeover switch 1b, however, only the business broadcasting device 10 can be started or stopped, as necessary, without changing the setting of the timer apparatus 4. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a power supply control device capable of switching only a power supply state from an external power supply to a main device as needed without changing a temporal condition related to power supply control.
[0002]
[Prior art]
FIG. 4 shows an example of a conventional power supply control device. The conventional power supply control device shown in FIG. 1 is a business broadcast system installed in a department store or the like. In addition to a business broadcast device 41 which is a main device that characterizes the function of the system, an amplifier 42, a sound source device 43, and a relay control device are provided. It is configured by a plurality of devices such as a device 44, a power supply device 45, and a timer device 46.
[0003]
Power is supplied from an external power supply to the business broadcast device 41, the amplifier 42, the sound source device 43, and the relay control device 44 via the power supply device 42. Further, the timer device 46 controls to start (ON) the power supply to the power supply device 42 at a predetermined time and stop (OFF) at a predetermined time. Each of the devices 41 to 45 is provided with a main power switch having a lock type, that is, a function of maintaining a contact open / close state. In a department store or the like, the main power switch of each device 41 to 45 is kept turned on, and the power supply to the power supply device 45 is automatically turned on and off at a time determined every day by the timer device 44, and the devices 41 to 45 are turned on. 45 are often started and stopped all at once. (For example, see Patent Document 1)
[0004]
[Patent Document 1]
JP-A-6-4186 [0005]
[Problems to be solved by the invention]
However, in such a conventional business broadcasting system, since power can be supplied to the power supply device 45 only in the time period set in the timer device 44, the business broadcasting system is not provided in the time period, that is, before the start of business or after the business end. When the maintenance of the broadcast device 41 is desired, the setting of the timer device 44 must be changed each time. In addition, when performing maintenance of the business broadcast device 41, other devices that do not need to be activated will also be activated.
[0006]
The present invention has been made in view of the above-described conventional circumstances, and switches only the power supply state from an external power supply to the main device as needed without changing the time condition regarding power supply control. It is an object to provide a possible power supply control device.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a power supply control device according to the present invention includes: a power supply control unit that controls power supply from an external power supply based on a preset time condition; and the power supply control unit. A main device to which power is supplied from the external power supply in accordance with an instruction from the external power supply, wherein the main device has operating means for starting or stopping power supply from the external power supply to the main device, and State switching means for switching between a supply state and a non-supply state by the operation means for a power supply state from a power supply to the main device. Therefore, it is possible to switch only the state of power supply from the external power supply to the main device as needed without changing the time condition regarding power supply control.
[0008]
Also, in the power supply control device according to the present invention, the main device may include an operation information holding unit that holds information indicating that the operation unit has been operated, and the operation information holding unit holding the information. Power supply control means for switching a power supply state from the external power supply to the main device, and erasing means for erasing information held in the operation information holding means after switching the power supply state by the power supply control means, Having. Therefore, only the power supply state from the external power supply to the main device can be switched by operating the operation means.
[0009]
Furthermore, in the power supply control device according to the present invention, the main device may be configured such that when the power supply state from the external power supply to the main device is a supply state, the operation unit is continuously operated for a predetermined time or more. And a power supply forcible shutoff unit for instructing the power supply control unit to switch a power supply state to a non-supply state. Therefore, when the power supply of the main unit cannot be cut off by the power supply control unit or the operation unit, the power supply of the main unit can be forcibly cut off.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
[First Embodiment]
FIG. 1 is a block diagram showing a configuration of a first embodiment of a power supply control device according to the present invention. As shown in the figure, the power supply control device of the first embodiment is a business broadcasting system installed in a department store or the like, and a business broadcasting device 10 which is a main device characterizing the function of the system. , A power supply device 3, and a timer device 4. The other devices 2 include an amplifier, a sound source device, a relay control device, and the like. The power supply control means in the claims corresponds to the timer device 4 of the present embodiment, and the main device corresponds to the business broadcast device 10.
[0011]
In the present embodiment, power is supplied to the other devices 2 from an external power supply via the power supply device 3, but power is supplied directly to the business broadcasting device 10 from the external power supply. Further, the timer device 4 starts (turns on) power supply to the business broadcast device 10 and the power supply device 3 at a predetermined time, and stops (turns off) power at another set time. I do. Further, each of the devices 1 to 3 is provided with a lock-type main power switch.
[0012]
Hereinafter, the business broadcasting device 10 will be described. As shown in FIG. 1, the business broadcast device 10 includes a control signal input unit 1a, a temporary changeover switch 1b, and a signal processing unit 1c. The operation means in the claims corresponds to the temporary changeover switch 1b, and the state switching means corresponds to the signal processing unit 1c.
[0013]
The control signal input unit 1a receives a control signal from the timer device 4 and sends it to the signal processing unit 1c. The temporary changeover switch 1b is a non-locking manual switch for turning on and off only the power supply to the business broadcasting device 10 as necessary. Each time the temporary changeover switch 1b is operated, a state inversion signal for controlling ON / OFF of only the power supply to the business broadcast device 10 is transmitted from the temporary changeover switch 1b to the signal processing unit 1c.
[0014]
The signal processing unit 1c controls on / off of power supply from an external power supply to each unit in the business broadcast apparatus 10 based on signals transmitted from the control signal input unit 1a and the temporary changeover switch 1b. When the state inversion signal is sent from the temporary changeover switch 1b, the signal processing unit 1c controls the power supply on and off regardless of the control signal from the control signal input unit 1a. That is, each time the temporary changeover switch 1b is operated, the power supply state is switched. If the power supply state is the supply state, the power supply state is switched to the non-supply state. If the power supply state is the non-supply state, the power supply state is switched to the supply state.
[0015]
Next, the operation of the power supply control device of the present embodiment will be described.
When the power supply control device of the present embodiment is used in a department store or the like, daily system operation starts by starting power supply to the business broadcast device 10 and other devices 2 at a preset time, The operation is terminated by stopping the power supply at another time. That is, the timer device 4 outputs a control signal for power activation (power activation signal) at a first time determined every day, and outputs a control signal (power interruption signal) for power off at a second time. I do. These control signals are sent to the power supply device 3 and the business broadcast device 10. The power supply device 3 turns on the power supply to the other devices 2 when receiving the power supply start signal, and turns off when receiving the power supply cutoff signal. In addition, the business broadcast device 10 turns on power supply to each unit in the business broadcast device 10 when receiving a power supply start signal, and turns off when receiving a power supply cutoff signal.
[0016]
On the other hand, when the temporary changeover switch 1b is manually operated, the business broadcast device 10 turns on and off power supply to each unit in the business broadcast device 10 regardless of the setting state of the timer device 4. That is, if the power supply is on when the temporary changeover switch 1b is operated, the power supply is turned off, and if the power supply is off, the power supply is turned on.
[0017]
Accordingly, when it is desired to perform maintenance or the like of the business broadcasting device 10 outside the time period set in the timer device 4, for example, before the start of work or after the end of work, the temporary changeover switch 1 b is manually operated, so that the timer device 4 is operated. Only the business broadcast device 10 can be started without changing the setting. If the temporary changeover switch 1b is operated again after the processing such as the maintenance is completed, the business broadcast device 10 can be stopped. Further, even when the present system is operating (power is being supplied to the business broadcast device 10 and the other device 2), it is also possible to temporarily stop only the power supply to the business broadcast device 10.
[0018]
[Second embodiment]
FIG. 2 is a block diagram showing the configuration of a second embodiment of the power supply control device according to the present invention. As shown in the figure, in the power supply control device of the second embodiment, the business broadcast device 20 includes the components (the control signal input unit 1a, the temporary switch 1b, and the signal processing unit 1c) shown in FIG. In addition, it has a control signal holding unit 1d, an operation information holding unit 1e, an erasing unit 1f, and a power control unit 1g. The operation information holding unit in the claims corresponds to the operation information holding unit 1e of the present embodiment, the power control unit corresponds to the power control unit 1g, and the erasing unit corresponds to the erasing unit 1f.
[0019]
In the present embodiment, when the business broadcast device 20 is activated by the temporary changeover switch 1b, when the temporary changeover switch 1b is operated once, information that "the switch has been operated" is held in the operation information holding unit 1e. The information held in the operation information holding unit 1e is sent to the power control unit 1g. Upon receiving the information from the operation information holding unit 1e, the power control unit 1g turns on the power supply to each unit in the business broadcast device 20. Then, at the same time as the signal processing unit 1c is initialized and starts operating, information that the temporary changeover switch 1b has been operated once is input to the signal processing unit 1c. As a result, the power control unit 1g immediately switches to the power activation from the signal processing unit 1c, and erases the information “switch has been operated” held in the operation information holding unit 1e by the erasing unit 1f. This causes a transition to a state of waiting for the temporary changeover switch 1b to be operated again.
[0020]
On the other hand, when the business broadcast device 20 is started by the control signal from the timer device 4, when the power start signal is sent from the timer device 4 to the control signal input unit 1a, the information that the power start signal has been received is indicated by the control signal holding unit. 1d. The information held in the control signal holding unit 1d is sent to the power control unit 1g. When receiving the information from the control signal holding unit 1d, the power control unit 1g turns on the power supply to each unit in the business broadcast device 20. Then, at the same time as the signal processing unit 1c is initialized and starts operating, a power activation signal is input to the signal processing unit 1c. Thereafter, the information held by the control signal holding unit 1d is erased by the erasing unit f. Then, the power control by the signal processing unit 1c is continued until the power cutoff signal is sent from the timer device 4 to the control signal input unit 1a.
[0021]
When the temporary changeover switch 1b is operated while the power control by the signal processing unit 1c is continued, the signal is input to the signal processing unit 1c. The signal processing unit 1c determines that the power should be turned off, and notifies the power control unit 1g of that. Then, the power control unit 1g performs control to cut off the power.
[0022]
The same applies to the case where the power of the business broadcast device 20 is shut off by the control signal from the timer device 4. When a power cutoff signal is sent from the timer device 4 to the control signal input unit 1a, the control signal input unit 1a sends the power cutoff signal to the signal processing unit 1c. The signal processing unit 1c determines that the power should be shut off, and notifies the power control unit 11 of that. Then, the power supply control unit 11 performs control to cut off the power supply.
[0023]
As described above, when the business broadcast device 20 is started in the present embodiment, the power is turned on according to the information held in the operation information holding unit 1e or the control signal holding unit 1d until the signal processing unit 4 is initialized. After the signal processing unit 1c is initialized, the information stored in the operation information storage unit 1e or the control signal storage unit 1d is erased, and at the same time, a signal is supplied from the power control according to the information. The processing is switched to the power control by the processing unit 1c. Thereafter, the signal processing unit 1c continues to monitor the on / off state (power supply state) of the power supply, and performs the inversion operation according to the next state inversion signal from the temporary changeover switch 1b or the control signal from the control signal input unit 1a. It will be.
[0024]
The signal input to the signal processing unit 1c is a make / break switching signal, a pulse signal, or the like. In addition, a small-capacity standby power supply is required for the holding circuit when starting up the power supply.
[0025]
[Third Embodiment]
FIG. 3 is a block diagram showing the configuration of the third embodiment of the power supply control device according to the present invention. As shown in the figure, in the power supply control device of the third embodiment, the business broadcast device 30 includes the components (control signal input unit 1a, temporary changeover switch 1b, signal processing unit 1c, control unit 1c) shown in FIG. In addition to the signal holding unit 1d, the operation information holding unit 1e, the erasing unit 1f, and the power control unit 1g), a power forced shutoff unit 1h is provided. The power supply forcible shutoff means in the claims corresponds to the power supply forcible shutoff section 1h of the present embodiment.
[0026]
In the present embodiment, when the temporary changeover switch 1b is kept pressed for several seconds, a forced cutoff signal is sent to the power cutoff unit 1h. Upon receiving the forcible shutoff signal, the forcible power cutoff unit 1h instructs the power control unit 1g to forcibly shut off the power supply by the power control unit 1g.
[0027]
Therefore, according to the present embodiment, even if the signal processing unit 1c runs out of control and the power of the business broadcast apparatus 30 cannot be cut off by the timer device 4 or the temporary changeover switch 1b, the temporary changeover switch 1b is It can be forcibly shut off by pressing it longer than usual. However, it is possible to adjust whether or not to forcibly shut off by holding down the temporary changeover switch 1b for how many seconds by changing the constants of the capacitor and the resistor of the time constant circuit (not shown).
[0028]
In the first to third embodiments, a business broadcast system installed in a department store or the like has been described as an example of the power supply control device according to the present invention. However, the present invention can be applied to other power supply control devices. is there.
[0029]
【The invention's effect】
As described above, according to the power supply control device of the present invention, only the power supply state from the external power supply to the main device is switched as necessary without changing the time condition regarding the control of the power supply. be able to.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a first embodiment of a power supply control device according to the present invention. FIG. 2 is a block diagram showing a configuration of a second embodiment of a power supply control device according to the present invention. 3 is a block diagram showing the configuration of a third embodiment of the power supply control device according to the present invention. FIG. 4 is a block diagram showing the configuration of a conventional power supply control device.
10, 20, 30 Business broadcasting device 1a Control signal input unit 1b Temporary changeover switch 1c Signal processing unit 1d Control signal holding unit 1e Operation information holding unit 1f Erasure unit 1g Power control unit 1h Power supply forced cutoff unit 2 Other equipment 3 Power supply Equipment 4 Timer equipment

Claims (3)

Power supply control means for controlling power supply from an external power supply based on a preset time condition,
A main device to which power is supplied from the external power supply according to an instruction from the power supply control means,
The main device,
Operating means for starting or stopping power supply from the external power supply to the main device,
A power supply control device, comprising: a state switching unit configured to switch a supply state and a non-supply state of the power supply from the external power supply to the main device by the operation unit. The main device,
Operation information holding means for holding information indicating that the operation means has been operated,
When the information is held in the operation information holding unit, a power control unit that switches a power supply state from the external power supply to the main device,
Erasing means for erasing information held in the operation information holding means after the power supply state is switched by the power control means,
The power supply control device according to claim 1, further comprising: The main device,
When the operation unit is continuously operated for a predetermined time or more while the power supply state from the external power supply to the main device is the supply state, the power supply control unit is instructed to switch the power supply state to the non-supply state. 3. The power supply control device according to claim 2, further comprising a power supply forcibly shutting off.

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