JP2002112354A - Remote control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a remote control system that allows even a remote controller, which cannot remotely control a device because of a different frequency in an electromagnetic wave and of a different modulation system, to able to remotely control the device. SOLUTION: The remote control system A is provided with a remote controller 1 that transmits a radio wave 10 on which a control signal is superimposed, a relay unit 2 having a reception section 22 that can demodulate the radio wave 10 and a transmission section 24 that transmits a radio wave on which the demodulated control signal is superimposed, with a reception section 32 that demodulates the radio wave 20 whose frequency and modulation system differ from those of the radio wave 10 and with a device side unit 3 that controls a monitor 4 on the basis of the demodulated control signal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control system for remotely controlling a device using electromagnetic waves.

[0002]

2. Description of the Related Art Conventionally, a weak radio wave or infrared light on which a control signal is superimposed is emitted from a remote controller to a device-side receiving device to open / close a shutter, lock / unlock an automobile door lock, and set a vehicle anti-theft device. A remote operation system for remotely controlling release or starting and stopping of an engine is known.

[0003]

The above-mentioned conventional remote control system has the following problems. If the output of the electromagnetic wave transmitted by the remote control is weak or the electromagnetic wave is infrared,
Equipment can be remotely controlled only in a small area. For example, a key remote controller that locks and unlocks a door lock of an automobile using infrared rays has a usable range of several meters in radius.

[0004] Further, depending on the frequency used, the electric field strength that can be used without permission is limited to a low level, so that the output of radio waves cannot be increased. For example, a remote controller that uses a frequency outside the frequency band of the specified low power has a usable range of several meters in radius.

[0005] If there is an obstacle or the like between the device and the remote controller or the distance between the device and the remote controller, radio waves transmitted by the remote controller do not reach the receiving unit of the device, and the device cannot be remotely controlled. For example, even a remote controller that transmits a radio wave of a specific low-power frequency band cannot set or release the anti-theft device for an automobile in a garage from the room.

A first object of the present invention is to provide a remote control system capable of extending the distance at which devices can be remotely controlled. A second object of the present invention is to provide a remote operation system capable of remotely controlling a device even if the frequency and the modulation method of the electromagnetic wave are different and the remote control cannot remotely control the device.

[0007]

In order to solve the above-mentioned problems, the above-mentioned configuration is adopted. (1) The remote control system transmits a first electromagnetic wave on which a control signal is superimposed, a receiving unit capable of demodulating the first electromagnetic wave, and a second unit on which the demodulated control signal is superimposed.
A relay device including a transmitting unit that transmits the electromagnetic wave as an electromagnetic wave,
The second electromagnetic wave having a different frequency or modulation method from the first electromagnetic wave
And a device-side device that controls the device based on the demodulated control signal.

(2) The remote control system is capable of transmitting a first electromagnetic wave on which a command signal is superimposed, and capable of demodulating a second electromagnetic wave on which an answer signal is superimposed, and a first remote controller transmitted from the remote controller. A first transmission / reception unit having a first transmission unit that demodulates the electromagnetic wave of the above, superimposes the demodulated command signal and transmits it as a third electromagnetic wave to a device-side device described later, and the device-side device 4th from
And a second transmitting / receiving unit having a second transmitting unit that superimposes the answer signal demodulated by the second receiving unit and transmits the superimposed answer signal as a second electromagnetic wave to the remote controller. A relay device, the device-side receiving unit demodulates the third electromagnetic wave having a different frequency and / or modulation method from the first electromagnetic wave, controls the device based on the demodulated command signal, and an answer signal indicating a control result. And the fourth electromagnetic wave is different from the second electromagnetic wave in frequency and modulation method.
And a device-side device that the device-side transmission unit transmits to the relay device as the electromagnetic wave.

(3) The remote control system has the configuration of (1) or (2) above, and is characterized in that the relay device is arranged on the remote control side or the device side device side.

(4) The remote control system includes a remote controller for transmitting an electromagnetic wave on which a control signal is superimposed, a receiving section capable of demodulating the electromagnetic wave, a function of the receiving section being temporarily stopped, and the same as the demodulated control signal. A relay device including a transmission unit that transmits to a device-side device described below as an electromagnetic wave on which a control signal is superimposed, and a device-side reception unit that demodulates the electromagnetic wave transmitted from the remote control or the relay device. A device-side device that controls the device based on the control signal.

(5) The remote control system is capable of demodulating an electromagnetic wave transmitted by the remote controller in the case of the first stage and a relay of the preceding stage in the case of the next stage and thereafter. A plurality of relay devices each including a receiving unit capable of demodulating an electromagnetic wave transmitted from the device and a transmitting unit transmitting the electromagnetic wave demodulated from the control signal to the next-stage relay device or device-side device as an electromagnetic wave having a frequency or a modulation method different from that of the control signal; A receiving unit capable of demodulating an electromagnetic wave transmitted by the last-stage relay device, and a device-side device that controls a device based on the control signal demodulated by the receiving unit.

[0012]

The remote controller transmits a first electromagnetic wave on which a control signal is superimposed. The relay device includes a receiving unit capable of demodulating a first electromagnetic wave, and a transmitting unit for superimposing the demodulated control signal and transmitting the superimposed control signal as a second electromagnetic wave. The device-side device has a device-side receiving unit that demodulates a second electromagnetic wave having a different frequency or modulation method from the first electromagnetic wave, and controls the device based on the demodulated control signal.

[0013] The remote control system can extend the distance over which the equipment can be remotely controlled through the relay device.

[0014] The remote control system can remotely control a device through a relay device even if the remote control cannot control the device remotely because the frequency and modulation method of the electromagnetic wave are different. The relay device may be provided on the remote controller side or the device side device side (corresponding to claim 3).

[Regarding Claims 2 and 3] The remote controller can transmit a first electromagnetic wave on which a command signal is superimposed,
The second electromagnetic wave on which the answer signal is superimposed can be demodulated. A first transmitting / receiving unit of the relay device includes a first receiving unit that demodulates a first electromagnetic wave transmitted from the remote controller, and a first transmitting unit that superimposes the demodulated command signal and transmits the command signal as a third electromagnetic wave to the device-side device. It has a transmission unit.

The second transmission / reception unit of the relay device includes a second reception unit for demodulating a fourth electromagnetic wave from the device-side device,
Has a second transmitting unit that superimposes the answer signal demodulated by the receiving unit and transmits the superimposed answer signal as a second electromagnetic wave to the remote controller.

The device-side device demodulates a third electromagnetic wave having a different frequency and a different modulation method from the first electromagnetic wave by the device-side receiver.
The device is controlled based on the demodulated command signal. In addition, the device-side transmission unit of the device-side device superimposes an answer signal indicating the control result and transmits the result to the relay device as a fourth electromagnetic wave having a different frequency or modulation method from the second electromagnetic wave.

The remote control system can extend the distance over which the device can be remotely controlled by way of the relay device, and can know the result of the control.

The remote control system can remotely control a device via a relay device even if the remote control cannot control the device remotely because the frequency and the modulation method of the electromagnetic waves are different. The relay device may be provided on the remote controller side or the device side device side (corresponding to claim 3).

[Regarding Claim 4] The remote controller transmits an electromagnetic wave on which a control signal is superimposed. The relay device includes a receiving unit that can demodulate an electromagnetic wave, and a transmitting unit that temporarily suspends the function of the receiving unit and transmits to the device-side device as an electromagnetic wave on which the same control signal as the demodulated control signal is superimposed. The equipment side device is
It has a device-side receiving unit that demodulates an electromagnetic wave transmitted from a remote controller or a relay device, and controls the device based on the demodulated control signal. The remote control system can extend the distance over which the device can be remotely controlled by the remote controller via the relay device.

[Claim 5] The remote controller transmits an electromagnetic wave on which a control signal is superimposed. The plurality of relay devices are capable of demodulating an electromagnetic wave transmitted by the remote controller in the case of the first stage, and a receiving unit capable of demodulating an electromagnetic wave transmitted by the preceding stage in the case of the next stage, and a demodulated control signal. A transmission unit that transmits the electromagnetic wave having a frequency and a modulation method different from those of the electromagnetic wave to a relay device or a device on the next stage; The device-side device controls a device based on a receiving unit capable of demodulating an electromagnetic wave transmitted from the last-stage relay device and a control signal demodulated by the receiving unit. By using a plurality of relay devices, the remote control system can greatly extend the distance over which the remote control of the device can be performed remotely.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention (Claim 1,
3) will be described with reference to FIG. The remote control system A includes a remote control 1, a relay device 2, and a device-side device 3, and remotely controls setting and release of a monitoring device 4 mounted on a vehicle.

When the setting switch 11 or the release switch 12 is pressed, the remote controller 1 transmits a radio wave 10 obtained by modulating a carrier with a set signal or a reset signal from the antenna 13. In this embodiment, the radio wave 10 transmitted by the remote controller 1 is 429 MHz and 10 mW, which is certified for a specific low power.

The relay device 2 receives the radio wave 10 captured by the antenna 21 and demodulates a set signal or a reset signal, and transmits from the antenna 23 a radio wave 20 obtained by modulating a carrier with a set signal or a reset signal. And a transmission unit 24 that is disposed in an appropriate place in the vehicle compartment, and the operating power is supplied from a vehicle-mounted battery. In this embodiment, the radio wave 20 transmitted by the transmission unit 24 is a weak radio wave of 300 MHz.

The device-side device 3 has a receiving section 32 for receiving the radio wave 20 captured by the antenna 31 and demodulating a set signal or a reset signal. When the set signal is demodulated, the monitoring device 4 is activated. State, and when the reset signal is demodulated, the operation of the monitoring device 4 is stopped.

Reference numeral 5 denotes a key remote controller, and a setting switch 5
When the 1 or release switch 52 is pressed, a transmission unit is provided for transmitting a radio wave 50 obtained by modulating a carrier with a set signal or a reset signal. The radio wave 50 transmitted by the transmission unit of the key remote controller is the same weak radio wave of 300 MHz as the radio wave 20 transmitted by the transmission unit 24 of the relay device 2.

The remote control system A has the following advantages. [A] When the remote control system A is not used, the monitoring device 4 mounted on the vehicle can be remotely controlled only up to several meters by the key remote controller 5. However, through the relay device 2, the remote control system A can remotely control the setting / cancellation of the monitoring device 4 mounted on the vehicle from several tens of meters to several hundreds of meters.

[A] When the remote controller 1 or the relay device 2 is broken or in a short distance, the key remote controller 5 is used to
This is convenient because the setting and release of the monitoring device 4 mounted on the vehicle can be remotely controlled.

Next, a second embodiment (corresponding to claim 1) of the present invention will be described with reference to FIG. Remote control system B
Comprises a remote controller 1, a relay device 2, and a device-side device 3, and remotely controls setting and release of the monitoring device 4 mounted on the vehicle.

When the setting switch 11 or the release switch 12 is pressed, the remote controller 1 transmits a radio wave 10 obtained by modulating a carrier wave with a set signal or a reset signal from the antenna 13. In this embodiment, the radio wave 10 transmitted by the remote controller 1 is 429 MHz and 10 mW, which is certified for a specific low power.

The relay device 2 receives the radio wave 10 captured by the antenna 21 and emits from the light emitting diode 261 a receiving unit 22 for demodulating a set signal or a reset signal, and an infrared ray 25 modulated by the set signal or the reset signal. A light projecting unit 26 is provided in the garage, and the operating power is a built-in battery.

The device 3 receives the infrared rays 25
3 and a light receiving unit 34 for demodulating a set signal or a reset signal. When the set signal is demodulated, the monitoring device 4 is activated, and when the reset signal is demodulated, the monitoring device 4 is activated. Stop operation.

Reference numeral 6 denotes a key remote controller, and a setting switch 6
When the 1 or release switch 62 is pressed, a light emitting diode 63 for emitting infrared light 60 modulated by a set signal or a reset signal is provided, and the power for operation is a built-in battery. The infrared rays 60 emitted from the light emitting diode 63 of the key remote controller 6 are transmitted to the light emitting diode 2 of the relay device 2.
The infrared ray emitted from the infrared ray 61 has the same modulation method as the infrared ray 25.

The remote control system B has the following advantages. [C] When the remote control system B is not used, the monitoring device 4 mounted on the vehicle can be remotely controlled only up to several meters by the key remote controller 6. However, through the relay device 2, the remote operation system B can set and release the monitoring device 4 mounted on the vehicle from its own room.

[D] When the remote controller 1 or the relay device 2 is broken or when the distance is short, the key remote controller 6 is used.
This is convenient because the setting and release of the monitoring device 4 mounted on the vehicle can be remotely controlled.

Next, a third embodiment of the present invention will be described.
3) will be described with reference to FIG. The remote control system C includes a key remote controller 6, a relay device 2, and a device-side device 3, and remotely controls setting and release of the monitoring device 4 mounted on the vehicle.

When the setting switch 61 or the release switch 62 is pressed, the key remote controller 6 sets the carrier wave to set.
An infrared ray 60 modulated by a signal or a reset signal is emitted from the light emitting diode 63. In the vicinity of the vehicle (several meters), the key remote controller 6 transmits the infrared rays 6 to the light receiving element 711 of the light receiving section 71 of the door locking / unlocking device 7 installed in the vehicle.
0 is emitted, and the door lock controller 72 locks and unlocks the door lock. In a place away from the vehicle (several tens to several hundreds of meters), the key remote controller 6 is attached to the relay device 2 for use.

The relay device 2 transmits the infrared light 60 to the light receiving element 27.
And a transmitting unit (not shown) for transmitting a radio wave 20 modulated by the set signal or the reset signal from the antenna 23. The light receiving unit (not shown) demodulates the set signal or the reset signal. The relay device 2 includes a key remote controller 6
Can be carried by the user with the device attached, and the operating power is a built-in battery. In this embodiment, the relay device 2
The radio wave 20 transmitted by the transmitting unit is 429 MHz, 10 m
W, which is certified for specific low power.

The device-side device 3 has a receiving unit 32 that receives the radio wave 20 captured by the antenna 31 and demodulates the set signal and the reset signal, and activates the monitoring device 4 when the set signal is demodulated. State, and when the reset signal is demodulated, the operation of the monitoring device 4 is stopped.

The remote control system C has the following advantages. [E] The remote control system C is provided with the key remote controller 6 attached to the relay device 2 to remotely control the setting and release of the monitoring device 4 from a place (several tens to hundreds of meters) away from the vehicle. can do. set signal or re
Since it is not necessary to provide a switch for outputting the set signal in the relay device 2, the manufacturing cost of the relay device 2 can be reduced.

Next, a fourth embodiment of the present invention will be described.
2) will be described with reference to FIG. The remote control system D includes a remote control 1, a relay device 2, and a device-side device 3, and remotely controls setting and release of the monitoring device 4 mounted on the vehicle.

The remote controller 1 includes a transmitting unit (not shown) for transmitting a radio wave 10 obtained by modulating a carrier wave with a set signal or a reset signal from an antenna 13 when a setting switch 11 or a release switch 12 is pressed.

When the receiving section (not shown) demodulates a set confirmation signal or a reset confirmation signal from a radio wave transmitted from the relay device 2, the remote control 1 sets the setting completion lamp 111.
And the release completion lamp 121 is turned on. In this embodiment, the radio wave 10 transmitted by the remote controller 1 is 429 MHz, 10 m
W, which is certified for specific low power.

The relay device 2 has a receiving unit 281 for demodulating the radio wave 10 transmitted from the remote controller 1, and superimposing the demodulated set confirmation signal or reset confirmation signal on the radio wave 200 (30).
A transmission / reception unit 280 having a transmission unit 282 for transmitting to the device-side device 3 as a weak radio wave (0 MHz); a reception unit 291 for demodulating the radio wave 30 from the device-side device 3;
A transmission unit 29 for superimposing a demodulated set confirmation signal or reset confirmation signal and transmitting the superimposed signal as a radio wave 20 to the remote controller 1
Transmission / reception section 290 having the antenna switching circuit 21
1, 231 and a control unit 293 for controlling the transmission / reception units 280, 290.

The device-side device 3 has a receiving unit (not shown) for receiving the radio wave 200 captured by the antenna 31 and demodulating a set signal or a reset signal, and monitors when the set signal is demodulated. Activate device 4 and reset
When the signal is demodulated, the monitoring device 4 is put into an operation stop state.

The transmission unit (not shown) of the device 3
Transmits a set confirmation signal or a reset confirmation signal indicating a control result of controlling the monitoring device 4 to the relay device 2 as a radio wave 30 by superimposing on a carrier wave. The radio wave 30 transmitted by the transmission unit (not shown) of the device-side device 3 is the same weak radio wave of 300 MHz as the radio wave 200 transmitted by the transmission unit 282 of the relay device 2.

[F] When the remote control system D is not used, the monitoring device 4 mounted on the vehicle can be remotely controlled only by a few meters to a few tens meters by a remote controller. However, through the relay device 2, the remote operation system D sets and releases the monitoring device 4 mounted on the vehicle to several tens to several hundreds of meters.
Until the remote control 1 can be operated remotely, the result of setting and release of the monitoring device 4 can be confirmed with the remote control 1.

For example, the relay device 2 can be installed in the garage, and the setting / cancellation of the monitoring device 4 for the car put in the garage and the confirmation thereof can be performed from the user's room. Also,
The relay device 2 is installed in the vehicle, and the setting and release of the monitoring device 4 for a car placed in a parking lot such as a coffee shop and the confirmation thereof can be performed from inside the coffee shop or the like.

The present invention includes the following embodiments in addition to the above embodiment. a. The device and the device-side device may be a wireless electric shutter in a garage, a door opening / closing device in a warehouse or an office, or a home appliance such as an air conditioner or a light.

B. The radio wave transmitted by the remote controller and the radio wave transmitted by the relay device may have the same frequency and the same modulation method. In this case, the relay device suspends the function of the receiving unit that can demodulate the control signal from the radio wave transmitted by the remote controller and the function of the receiving unit when transmitting to the device-side device, and transmits the same control signal as the demodulated control signal. A transmission unit for transmitting the superimposed radio wave (corresponding to claim 4).

C. An electromagnetic wave transmitted from the remote controller may reach the device-side receiving unit of the device-side device via two or more relay devices. In this case, the remote control system includes a remote controller that transmits an electromagnetic wave on which the control signal is superimposed,
In the case of the first stage, the electromagnetic wave transmitted by the remote controller can be demodulated, and in the case of the next stage, the receiving unit that can demodulate the electromagnetic wave transmitted by the relay device of the preceding stage, and the electromagnetic wave, frequency and modulation method that demodulated the control signal A plurality of relay devices including a transmission unit that transmits to the next-stage relay device or device-side device as different electromagnetic waves, a reception unit that can demodulate an electromagnetic wave transmitted by the last-stage relay device, and control that the reception unit demodulates. A device-side device that controls the device based on the signal (corresponding to claim 5).

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a remote operation system according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a remote control system according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a remote operation system according to a third embodiment of the present invention.

FIG. 4 is a configuration diagram of a remote control system according to a fourth embodiment of the present invention.

[Explanation of symbols]

 A, B, C, D Remote control system 1 Remote control 2 Relay device 3 Equipment side device 4 Monitoring device 10 Radio wave (first electromagnetic wave) 20 Radio wave (second electromagnetic wave) 22 Receiver 24 Transmitter 30 Radio wave (Fourth (Electromagnetic wave) 32 Receiver (device-side receiver) 200 Radio wave (third electromagnetic wave) 280 Transmitter / receiver (first transmitter / receiver) 281 Receiver (first receiver) 282 Transmitter (first transmitter) 290 Transmitting / receiving section (second transmitting / receiving section) 291 Receiving section (second receiving section) 292 Transmitting section (second transmitting section)

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B60R 25/04 608 B60R 25/04 608 25/10 617 25/10 617 F term (Reference) 2E250 AA01 AA03 AA10 AA11 AA21 BB08 BB65 BB66 CC20 CC25 FF24 FF35 FF36 FF38 HH01 JJ00 JJ03 KK03 LL00 LL01 SS09 SS12 5K048 AA04 BA52 CA08 DA01 DB01 DC01 EA11 EB02 FC01 HA01 HA02 HA03 HA05 HA07 HA13 HA24

Claims (5)

[Claims] 1. A remote controller for transmitting a first electromagnetic wave on which a control signal is superimposed, a receiving unit capable of demodulating the first electromagnetic wave, and a transmission for superimposing the demodulated control signal and transmitting the second electromagnetic wave as a second electromagnetic wave A relay device comprising: a second unit having a frequency and a modulation method different from those of the first electromagnetic wave;
A device-side receiving unit that demodulates the electromagnetic wave, and a device-side device that controls the device based on the demodulated control signal. 2. A remote controller capable of transmitting a first electromagnetic wave on which a command signal is superimposed and capable of demodulating a second electromagnetic wave on which an answer signal is superimposed, and a remote controller for demodulating the first electromagnetic wave transmitted from the remote controller. 1
Receiving section, a first transmitting / receiving section having a first transmitting section for superimposing a demodulated command signal and transmitting it as a third electromagnetic wave to a device-side device described later, and a fourth electromagnetic wave from the device-side device. A relay device including a second receiving unit for demodulating, a second transmitting / receiving unit having a second transmitting unit for superimposing the answer signal demodulated by the second receiving unit and transmitting the superimposed answer signal as a second electromagnetic wave to the remote controller; The third electromagnetic wave is different from the third electromagnetic wave in frequency and modulation method.
The device-side receiving section demodulates the electromagnetic wave, controls the apparatus based on the demodulated command signal, and superimposes an answer signal indicating a control result to superimpose the fourth electromagnetic wave having a different frequency or modulation method from the second electromagnetic wave. And a device-side device for transmitting a device-side transmission unit to the relay device as the electromagnetic wave. 3. The remote control system according to claim 1, wherein the relay device is provided on the remote controller side or the device side device side. 4. A remote controller for transmitting an electromagnetic wave on which a control signal is superimposed, a receiving unit capable of demodulating the electromagnetic wave, a function of the receiving unit being temporarily stopped, and an electromagnetic wave on which the same control signal as the demodulated control signal is superimposed. A relay device including a transmitting unit that transmits to the device-side device described below; and a device-side receiving unit that demodulates the electromagnetic wave transmitted from the remote controller or the relay device. The device is configured based on the demodulated control signal. A remote control system comprising: a device that controls the device. 5. A remote controller for transmitting an electromagnetic wave on which a control signal is superimposed; an electromagnetic wave transmitted from the remote controller in a first stage can be demodulated; and an electromagnetic wave transmitted from a preceding stage relay device in a subsequent stage can be demodulated. A plurality of relay devices each including a demodulating receiving unit, and a transmitting unit that transmits to the next-stage relay device or device-side device an electromagnetic wave having a frequency or a modulation method different from that of the control signal demodulated electromagnetic wave; A remote control system comprising: a receiving unit capable of demodulating an electromagnetic wave transmitted from a device; and a device-side device that controls a device based on the control signal demodulated by the receiving unit.