JPH11341705A - Power supply controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply controller which is applied to an electronic apparatus, is operated by a wireless remote control and is able to suppress the power consumption of the electronic apparatus, when a power supply is turned off. SOLUTION: A detection unit 11, to which a current is always applied by a capacitor and a secondary battery and which detects a remote control signal from a transmitter 1, is provided. A control unit 13 started by a signal from the detection unit 11 controls the 1st power supply switching part 16 of a power supply circuit unit 15. When the 1st power supply switching part 16 is closed, a current is applied to a receiving unit 12, which receives the remote control signal and the remote control signal is reproduced into a code signal which is transmitted to the control unit 13 for controlling the operation of an electronic apparatus. A wireless remote control device, which is able to eliminate power consumption in the receiving unit 12 while the power supply is opened and can suppress a power consumption in the power supply circuit unit 15 can be realized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply control device operated by a wireless remote controller using infrared rays of a video / audio device or an air conditioner.

[0002]

2. Description of the Related Art A conventional power supply control device will be described with reference to FIG.

FIG. 5 is a block diagram of an electronic device provided with a power supply control device operated by a conventional infrared remote controller. Reference numeral 1 denotes an infrared remote controller signal obtained by modulating a code signal for controlling the electronic device. The transmitter 2 is a receiving unit that receives a remote control signal from the transmitter and reproduces the code signal, and the control unit 3 decodes and determines the code signal reproduced by the receiving unit and controls the operation of the electronic device. A power supply circuit unit that supplies power to the main circuit 5 of the electronic device and the receiving unit 2 and the control unit 3 related to the remote control signal, and a power supply opening / closing unit 6 that controls connection and disconnection of power supply to the main circuit.

[0004] The operation of the power supply control device for an electronic device configured as described above will be described. When the power supply of the electronic device is off, the power supply opening / closing unit 6 is open and the main circuit 5 is not operating. The control unit 3 is always energized by the power supply circuit unit 4.

In this state, when the transmitter 1 is operated to transmit a remote control signal for power control, the receiving unit 2 receives and reproduces the code signal, and the control unit 3 determines that the signal is a power-on signal, and 6 is closed, power is supplied from the power supply circuit section 4 to the main circuit 5, and the electronic device is in an operating state. Then, the transmitter 1 is operated so as to correspond to a desired operation. The equipment was to operate.

[0006]

However, in the power supply control device operated by the above-mentioned conventional wireless remote control, even if the power of the electronic device is turned off by the transmitter 1, the remote control signal is received and the electronic device is then controlled. In order to operate, it is necessary to keep the receiving unit 2 and the control unit 3 always in an energized state, and in the receiving unit 2, the control unit 3, and the power supply circuit unit 4,
Some power consumption was inevitable at all times.

The present invention solves such a conventional problem, and is operated by a wireless remote controller that eliminates power consumption of a receiving unit of an electronic device when power is turned off and suppresses power consumption in a power supply circuit unit. It is intended to supply a power control device.

[0008]

In order to solve the above-mentioned problems, a power supply control device according to the present invention is provided with a detection unit which is always energized by a capacitor or a secondary battery and detects a remote control signal of a transmitter. The control unit, which is activated by a signal from the controller, controls the power switching unit of the power circuit, and when the power switching unit is closed, power is supplied to the receiving unit that receives the remote control signal, and the remote control signal is reproduced as a code signal. The operation of the electronic device is controlled by transmitting the electronic device to the electronic device.

Thus, the detecting section only needs to detect the presence or absence of the remote control signal. The detecting section can be constituted by a simple circuit having a lower frequency characteristic than the receiving section and consumes less power. Thus, a power supply control device operated by a wireless remote controller that suppresses power consumption in the entire device by eliminating power consumption in the receiving unit and the power supply circuit when the power of the electronic device is turned off can be realized.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a detecting section for detecting a remote control signal from a transmitter, and a receiving section for receiving a remote control signal from the transmitter and reproducing the code signal. A control unit that is activated by a signal from the detection unit, controls the opening and closing of the power supply circuit, controls the operation of the device by decoding and determining the code signal from the reception unit, and is provided in the power supply circuit and controlled by the control unit. And a second power switch for opening and closing the power circuit to the main circuit. The first and second power switch for opening and closing the power circuit to the main circuit.
When the detection unit detects a remote control signal from the transmitter when the power switch unit is in the open state, the control unit is activated to close the first power switch unit, and the reception unit is energized and the remote control unit receives the remote control signal from the transmitter. When the signal is reproduced as a code signal and transmitted to the control unit, and the code signal performs power control, the control unit closes the second power supply opening / closing unit to energize the main circuit, and then controls the power supply. When a code signal to be transmitted is received, the power supply control device is configured to open the first and second power supply opening / closing portions and stop energizing the main circuit and the reception portion of the electronic device. Since the unit only needs to detect the presence or absence of the remote control signal, it can be configured with a simple circuit with lower frequency characteristics than the receiving unit and consumes less power, so it can be configured to operate with a small capacity secondary power supply, Receiving when the electronic device is turned off And eliminate the power consumption in the power supply circuit unit, an effect that power consumption can be suppressed as a whole unit.

According to a second aspect of the present invention, in the first aspect of the invention, the capacitor or the second capacitor is charged when the first power supply opening / closing section is in a closed state, and at least when the first power supply opening / closing section is in an open state. The secondary battery is connected as a secondary power supply to the load side of the power supply circuit via a means for preventing discharge to the power supply circuit, and has an effect that a power supply unit for keeping the detection unit in a conductive state can be easily configured.

According to a third aspect of the present invention, in the second aspect of the invention, the control unit monitors the voltage value of the secondary power supply, and when the voltage drops to a predetermined voltage value or less, the first power supply switching unit is activated. The secondary power supply is charged in the closed state, and has the effect that the electronic device can be operated using the remote control transmitter even after it has not been used for a long time.

According to a fourth aspect of the present invention, in the second or third aspect of the present invention, when the third power supply opening / closing section provided independently of the first and second power supply opening / closing sections is in a closed state. The secondary power supply is charged, and it is not necessary to close the first power supply opening / closing unit during charging, and the power consumption in the receiving unit can be suppressed.

According to a fifth aspect of the present invention, in the second or third aspect of the present invention, the first power switch is opened and closed on the primary AC power supply side of the power supply circuit. The power consumption can be minimized by cutting the circuit at the input side of the power supply, and the safety can be obtained by cutting off the primary side AC power supply.

According to a sixth aspect of the present invention, in the invention of the fifth aspect, the first power supply opening / closing section is opened / closed by a switch contact, and the switch contact opening / closing timing is such that the voltage of the primary AC power supply is zero. This is performed in the vicinity, and has the effect of suppressing the generation of arc and heat of the switch contact due to the inrush current and extending the life of the contact.

The invention according to claim 7 is the invention according to claim 5 or 6, wherein a remote control operation type power switch drivable by a plunger is used for the first power supply opening / closing section, and the opening / closing is performed by a control section. The power supply opening / closing unit to be controlled can be easily configured, and the power supply of the electronic device can be connected and disconnected by directly operating the power supply switch manually.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a block diagram of an electronic apparatus provided with a power supply control device operated by a wireless remote controller according to a first embodiment of the present invention. In FIG. A transmitter 11 is a detector for detecting the presence or absence of a remote control signal from the transmitter 1, 12 is a receiver for receiving the remote control signal and reproducing it as a code signal, and 13 is a power supply circuit activated by a signal from the detector 11 A control unit that controls opening and closing, receives a code signal from the receiving unit 12, decodes and determines and controls the electronic device, 14 is a main circuit of the electronic device, 15 is a power supply circuit unit that supplies power to the above units,
Reference numeral 16 denotes a first power switching unit that cuts off power to the receiving unit 12, 17 denotes a second power switching unit that cuts off power to the main circuit 14, and the detecting unit 11 and the control unit 13 include capacitors, It is always energized by means such as a battery (not shown),
The operation of the first and second power switching units 16 and 17 is controlled by the control unit 13.

Next, the operation of the electronic device provided with the power supply control device operated by the wireless remote controller configured as described above will be described. When the electronic device shown in FIG. The control unit 13 is always energized with a small amount of power consumption by means such as a battery, but the receiving unit 12 and the main circuit 14 are turned off by the first and second power switching units 16 and 17.

When the user operates the transmitter 1 to transmit a remote control signal when operating the electronic equipment, the detecting unit 11 detects the remote control signal and transmits the signal to the control unit 13. Is activated, first, the first power supply opening / closing unit 16 is closed and the receiving unit 12 is energized.

Then, the receiving section 12 receives the remote control signal and reproduces it as a code signal.
When the code signal is a signal for controlling the power supply, the control unit 13 closes the second power supply opening / closing unit 17 and turns off the main circuit 14 of the electronic device to operate the electronic device.

When a signal for controlling the power supply is received next, the control unit 13 turns off the first and second power supply opening / closing units 16 and 17 again to turn on the power to the receiving unit 12 and the main circuit 14. Stop it.

As described above, according to the present embodiment, when the electronic device is turned on, it can be operated by operating the remote control transmitter as in the conventional case, and when the electronic device is off, the main circuit 14 is of course used. That is, since the receiving unit 12 is also turned off, only the detecting unit 11 and the control unit 13 configured by a simple circuit having lower frequency characteristics than the receiving unit 12 have,
The power consumption can be suppressed to a very small amount that can be covered by the secondary power supply.

(Embodiment 2) FIG. 2 is a block diagram of an electronic apparatus provided with a power supply control device operated by a wireless remote controller according to a second embodiment of the present invention, according to the first embodiment. On the other hand, the receiving unit 12 is connected to the load side of the first power switching unit 16 and the power circuit unit 1 is connected.
A capacitor 19 having a predetermined capacity is connected via a diode 18 which is a means for preventing discharge to the 5A side, and a power supply circuit to the detection unit 11 and the control unit 23 is connected to a connection point between the cathode side of the diode 18 and the capacitor 19. It is connected.

In this case, the control unit 23 monitors the voltage value of the capacitor 19 and automatically closes the first power supply opening / closing unit 16 when the voltage value falls below a predetermined voltage value.
The first power supply opening / closing unit 16 is opened when the capacitor 19 is charged via the power supply and the voltage returns to a required voltage value.

Next, the operation of the electronic device provided with the power supply control device operated by the wireless remote controller configured as described above will be described. When the electronic device shown in FIG. The control unit 23 is always energized by the electric charge charged in the capacitor 19, but the receiving unit 12 and the main circuit 14 are turned off by the first and second power switching units 16 and 17.

As described above, the control unit 23 monitors the voltage value of the capacitor 19, and when detecting that the voltage value has fallen below the predetermined voltage value, controls the first power supply switching unit 16 to close. Therefore, the capacitor 19 is charged via the diode 18, and when reaching a predetermined voltage value, the control unit 23 opens the first power switch unit 16.

The detection unit 11 and the control unit 23
Are always kept energized.

The operation of the transmitter 1 and the operation of the electronic device accompanying the operation of the electronic device are the same as those in the first embodiment, and the description is omitted.

Also in the case of this embodiment, when the electronic device is in the off state, not only the main circuit 14 but also the receiving unit 12 is off, so that only the detection unit 11 and the control unit 23 are minute. Power consumption can be suppressed, and a power supply circuit of the detection unit 11 and the control unit 23 is provided with a capacitor 19 having a predetermined capacity connected thereto.
In addition, the power supply unit that keeps the control unit 23 in the energized state can be easily configured, and the automatic charging control by the control unit 23 prevents overdischarge of the capacitor 19, so that the transmitter 1 can be used even after the electronic device has not been used for a long time. It can be operated by using.

It is needless to say that the same effect can be obtained even if the capacitor 19 described in the present embodiment is replaced with a secondary battery.

(Embodiment 3) FIG. 3 is a block diagram of an electronic apparatus provided with a power supply control device operated by a wireless remote controller according to a third embodiment of the present invention. Power circuit 1
5B, a third power switching unit 20 is newly added, and the capacitor 19, the detection unit 11, and the control unit 33 are connected to the load side of the third power switching unit 20.

Also in the case of the present embodiment, the detection unit 11 and the control unit 33 are always kept in the energized state by the electric charge charged in the capacitor 19, and the control unit 33 monitors the voltage value of the capacitor 19 and When the lowering of the voltage value is detected, the third power switch 20 is controlled to be closed, and when the capacitor 19 is charged by the power supply through the third power switch 20 and reaches a predetermined voltage value, the control unit is controlled. 3
Reference numeral 3 denotes a unit for opening the third power switch unit 20.

The operation of the transmitter 1 at the time of operating the electronic device and the operation of the electronic device associated therewith are the same as those in the first embodiment, and thus the description thereof is omitted.

In the case of the present embodiment, the charging of the capacitor 19 when the electronic device is in the off state is performed through the third power supply opening / closing unit 20, so that the power supply to the receiving unit 12 may be performed. In other words, the power consumption when the electronic device is in the off state can be further reduced as compared with the case of the second embodiment.

(Embodiment 4) FIG. 4 is a block diagram of an electronic apparatus provided with a power supply control device operated by a wireless remote controller according to a fourth embodiment of the present invention, and is based on the second embodiment. A power switch 25 which is driven by the operation of the plunger 24 and which can be manually operated, such as an electromagnetic power switch with a built-in battery described in Japanese Utility Model Application Laid-Open No. 58-103450, is used as a first power switch. The power switch 25 is disposed on the primary AC power supply 27 side, and the detection unit 11, the reception unit 12, the control unit 43, and the second power supply opening / closing unit 17 are connected to a power supply circuit unit 15C provided on the load side via a transformer 26. Is connected to the main circuit 14 via the.

In this case, the control unit 43 includes the capacitor 19
When the power supply circuit automatically monitors the voltage value of the capacitor 19 and turns on the power of the electronic device by operating the transmitter 1, the voltage waveform of the primary AC power supply is monitored, and the voltage waveform is monitored at a predetermined timing. It has a function of driving the plunger 24 and controlling the opening and closing of the power switch 25 when the voltage is near zero.

Also in the case of the present embodiment, the detecting section 11 and the control section 43 are always kept energized by the capacitor 19, so that the operation of the transmitter 1 when the electronic apparatus is to be operated and the accompanying operation of the electronic apparatus are performed. The operation is described in the first embodiment.
Therefore, the description is omitted.

As described above, according to the present embodiment, the power supply to the electronic device is cut off on the primary AC side, so that the circuit is cut off on the input side of the power supply when the electronic device is off. Power consumption can be minimized, and a sense of safety can be obtained by disconnection of the primary AC power supply. By doing so, it is possible to suppress the generation of arcs and heat at the contacts due to the inrush current, prolong the life of the contacts, handle electronic devices requiring a relatively large current, and directly operate the power switch 25 manually. The operation is also possible and convenient.

[0039]

As described above, according to the present invention, the power of the electronic device can be turned on and off by operating the remote control transmitter, and the power consumption of the receiving unit when the power is turned off can be reduced. Power consumption of the electronic device as a whole,
The advantageous effect of being able to provide a wireless remote control device that can provide a sense of relief by disconnecting the primary AC power supply side is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram of an electronic apparatus including a power control device operated by a wireless remote controller according to a first embodiment of the present invention;

FIG. 2 is a block diagram of an electronic apparatus including a power supply control device operated by a wireless remote controller according to a second embodiment of the present invention;

FIG. 3 is a block diagram of an electronic apparatus including a power supply control device operated by a wireless remote controller according to a third embodiment of the present invention.

FIG. 4 is a block diagram of an electronic device including a power supply control device operated by a wireless remote controller according to a fourth embodiment of the present invention.

FIG. 5 is a block diagram of an electronic device including a power supply control device operated by a conventional wireless remote controller.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transmitter 11 Detecting part 12 Receiving part 13,23,33,43 Control part 14 Main circuit 15,15A, 15B, 15C Power supply circuit part 16 First power switch part 17 Second power switch part 18 Diode 19 Capacitor 20 Third power switch 24 Plunger 25 Power switch 26 Transformer 27 Primary AC power supply

Claims (7)

[Claims] 1. A detecting section for detecting a remote control signal from a transmitter, a receiving section for receiving a remote control signal from a transmitter and reproducing the code signal, and opening and closing a power supply circuit activated by a signal from the detecting section. A control unit that controls the operation of the device by controlling and decoding the code signal from the receiving unit; and a first power supply provided in the power supply circuit and controlled by the control unit to open and close the power supply circuit to the receiving unit. The control unit includes a switch unit and a second power switch unit that opens and closes a power supply circuit to the main circuit. When the first and second power switch units are in the open state, control is performed when the detection unit detects a remote control signal from the transmitter. When the unit is activated to close the first power supply opening / closing unit, the reception unit is energized, the remote control signal from the transmitter is reproduced as a code signal, transmitted to the control unit, and is a code signal for performing power control. The control unit is a second power switching unit Is closed to energize the main circuit, and when a code signal for performing power control is received next, the first and second power switch units are opened to energize the main circuit and the receiving unit of the electronic device. Power control device configured to turn off the power. 2. A capacitor or a secondary battery which is charged when the first power supply opening / closing unit is in a closed state, and which keeps at least a detection unit in a conductive state when the first power supply opening / closing unit is in an open state, is connected to a load side of a power supply circuit as a secondary power supply. 2. The power supply control device according to claim 1, wherein the power supply control device is connected to the circuit side via a discharge prevention unit. 3. The secondary power supply according to claim 2, wherein the control unit monitors the voltage value of the secondary power supply, and when the voltage value falls below a predetermined voltage value, closes the first power supply switching unit to charge the secondary power supply. Power control unit. 4. The power supply control device according to claim 2, wherein the secondary power supply is charged when the third power supply opening / closing section provided independently of the first and second power supply opening / closing sections is in a closed state. 5. The power supply control device according to claim 2, wherein the first power supply switching unit is opened and closed on a primary AC power supply side of the power supply circuit. 6. The power supply control device according to claim 5, wherein opening and closing of the first power supply opening and closing unit is performed by a switch contact, and opening and closing of the switch contact is performed near a voltage of the primary side AC power supply is zero. 7. The power supply control device according to claim 5, wherein a remote control operation type power switch drivable by a plunger is used as the first power supply opening / closing unit.