JPH02194799A - Remote control device - Google Patents

Abstract

PURPOSE:To surely remote-control a device to be an object by only performing switching operation even in the case where plural sets of the devices of the same kind are installed in the neighborhood by providing a switching transmitting means to switch from radio communication to wire communication. CONSTITUTION:A remote control device as a transmitting side device is provided with a change-over switch 14 to perform the switching operation between the radio communication and the wire communication, and an indoor control device 20 is provided with the change-over switch 23 to perform the switching operation between the radio communication and the wire communication and the change- over switch to switch a signal input state. Then, transmitting operation and receiving operation can be stopped by external switching operation, and simultaneously, a control command signal can be inputted to the signal processing means 24 of the receiving side device 20 through a communication line 30. Thus, even in the case where plural sets of the devices of the same signal form are installed in the neighborhood, only the device 20 to be the object can be surely remote-controlled by only performing the switching operation.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention includes a transmitting side device that wirelessly transmits a control command signal, and a transmitting device that receives the control command signal and processes it with a signal processing means. The present invention relates to a remote control device including a receiving device that controls a controlled device.

(Prior Art) As this type of remote control device, there is a control device for an air conditioner. The control device for this air conditioner includes a remote control device as a transmitting device and an indoor control device as a receiving device. Among these, the remote control device converts the signal of the operation switch into a digital serial signal, creates a modulation signal corresponding to this serial signal, and emits infrared rays. In addition, the indoor control device receives infrared rays and processes the control command signal obtained by demodulating the modulated signal to directly control the fan motor, and also controls the four-way valve, compressor, etc. via the outdoor control device. control.

(Problem to be Solved by the Invention) By the way, in recent air conditioners, the transmission output of the remote control device has been increased and the transmission angle range has been expanded, making it possible to freely control the air conditioner remotely even in a large room. It is becoming.

In this case, there is no problem if there is only one device with the same type of signal type, but if multiple devices with the same type of signal type are installed in the same room or nearby, only one device can be remotely controlled using the remote control device. This may make it impossible to operate or cause unrelated equipment in an adjacent room to start/stop.

To solve this problem, remote control devices have been equipped with output changing means (for example, variable resistors that change the current value), or signal codes have been changed for each device, but as the number of devices installed increases, this adjustment becomes more difficult. , there was a problem that the configuration became complicated.

This invention was made in order to solve the above problems, and it is an object of the present invention to obtain a remote control device that can reliably remotely control only the target device without causing complicated adjustments or complicating the configuration. With the goal.

[Structure of the invention]

(Means for Solving the Problem) The present invention includes a transmitting side device that wirelessly transmits a control command signal, and a receiving side device that receives the control command signal and processes it with a signal processing means to control a controlled device. In the remote control device, the transmitting operation of the transmitting device and the receiving operation of the receiving device are stopped by an external switching operation, and the control command signal of the transmitting device is transmitted to the receiving device via a communication line. The apparatus is characterized in that it includes switching transmission means for inputting to the signal processing means of the side device.

In this case, the switching transmission means includes a cable, a first changeover switch that selectively connects the output path of the control command signal of the transmitting side device to the cable, and a control command signal input to the signal processing means of the receiving side device. It is preferable to include a second changeover switch that selectively connects the route to the cable.

(Function) This invention is equipped with a switching transmission means for switching from wireless communication to wired communication, so even if multiple devices with the same type of signal type are installed nearby, it is possible to target them by simply switching. Only the device can be controlled remotely.

In addition, since it is sufficient to use only a cable and a changeover switch as the switching transmission means, complication of the configuration can also be avoided.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings regarding a control device for an air conditioner.

FIG. 2 is a schematic configuration diagram of this control device, in which the remote control device 10 as a transmitting device and the indoor control device 20 as a receiving device not only transmit and receive wirelessly, but also transmit and receive by wire via a cable 30. It is now possible to do so. Among these, the remote control device 10 includes a run/stop switch 11A1 various setting switches 11B1 for setting indoor temperature, indoor humidity, operating time, etc., a liquid crystal display device 12A1 for displaying the current time and various setting values, a light emitting diode 13 for emitting infrared IR.
A, a changeover switch 14 is provided for switching between wireless and wired. The indoor control device 20 also includes a changeover switch 23 for switching between wireless and wired control, and a changeover switch 26 for changing over the signal input state. On the other hand, cable 3
One end of 0 is connected to the remote control device 10 by a connector 18, and the other end is connected to the indoor control device 20 by a connector 25.
It is connected to the.

FIG. 1 is a block diagram showing the detailed configuration of this control device. Here, the remote control device 10 is equipped with a CPU'15 as a signal processing means, which receives operation signals from the operation switch 11 (the above-mentioned run/stop switch 11A1 and various setting switches IIB) and a time signal from the clock circuit 16. Added. The time signal and setting signal processed by the CPU 15 are then applied to the display control circuit 12, and the current time and various setting values are displayed on the liquid crystal display device 12A. Also,
Various serial setting signals processed by the CPU 15 are sent out to the cable 30 via the connector 18 or modulated by the modulation circuit 17 and then sent from the transmission circuit 13, depending on the state of the changeover switch 14. . Further, in the indoor control device 20, when the receiving circuit 21 receives infrared rays, the demodulating circuit 22 demodulates the modulated signal. The demodulated signal is taken into the CPU 24 as a signal processing means, but a changeover switch 23 is provided in this signal path, and by switching the switch 23, a signal sent through the connector 25 is added to the CPU 24 instead of the demodulation signal. I also do it. In addition, C
The PU 24 provides processed signals to the fan motor, compressor, etc., but these controlled devices are omitted because they are not directly related to the present invention.

The detailed operation of this embodiment configured as described above will be explained below.

First, when the run/stop switch IIA is set to the stop side,
A time signal from the clock circuit 16 is applied to the display control circuit 12 through the CPU 15, and the current time is displayed on the liquid crystal display device 12A. Further, the operation start time, operation stop time, indoor temperature, indoor humidity, etc. set by the various setting switches 11B are stored in the CPU 15, and the stored contents are also displayed on the liquid crystal display device 12A by the display control circuit 12. During this time, the CPU 15 continues to check whether the current time and the set driving start time match.

Next, when the current time and the set operation start time match, or when the run/stop switch 11A is set to the operation side, the CPU 15 sends the encoded serial information such as operation commands, temperature settings, and humidity settings. It is converted into a signal (hereinafter referred to as a control command signal) and sent out. This control command signal is applied to the modulation circuit 17 depending on the state of the changeover switch 14, or
It is sent out to the cable 30 via the connector 18.

Now, when there are no devices with the same type of signal nearby, if the changeover switch 14 and changeover switch 23 are both set to the rONJ side, the control command signal C8 shown in FIG. 3(a) is applied to the modulation circuit 17. , which is modulated here to give the result shown in Fig. 3 (b
) is input to the transmitting circuit 13, and is emitted from the light emitting diode 13A (FIG. 2) in the form of infrared IR. This infrared IR is received by a receiving circuit 21, and the modulated signal MW is demodulated by a demodulating circuit 22. The demodulated signal is input to the CPU 24 via the changeover switch 23 as a control command signal C5. The CPU 24 processes this control command signal to control a controlled device (not shown).

If the operating conditions are changed in this state using the operating switch 11, the control command signal C8 associated with the change is input to the CPU 24 of the indoor control device 20 in the same manner as described above.

Further, if the current time and the set operation stop time match, a control command signal corresponding to the stop is input to the CPU 24.

Thus, by setting both the changeover switch 14 and the changeover switch 23 to the "ON" side, wireless remote control can be performed in exactly the same manner as in the conventional device.

On the other hand, when devices with the same type of signal exist nearby, both the changeover switch 14 and the changeover switch 23 are set to rO
If set to the FFJ side, the modulation operation in the remote control device 10 and the demodulation operation in the indoor control device 20 are blocked, and the control command signal C8 output from the CPU 1.5 is prevented.
is input directly to the CPU 24 via the cable 30. As a result, six-wire remote control is performed without emitting infrared rays from the remote control device 10 and without causing the indoor control device 20 to receive infrared rays from other devices. Therefore, interference with other devices having the same type of signal can be prevented.

Note that the changeover switch 26 provided in the indoor control device 20 is
If this is switched to the rOFFj side, the above operation will be performed, but when this changeover switch 26 is switched to the ONj side, the control command signal sent via the cable 30, the receiving circuit 21 and the demodulating circuit 22 Both control command signals obtained through −)■It is made into Noh.

Although the above embodiment describes the case where the present invention is applied to a control device for an air conditioner, the present invention is not limited to this, and can also be applied to remote control of televisions, audio devices, etc. Needless to say.

〔Effect of the invention〕

As is clear from the above explanation, according to this invention,
Equipped with a switching transmission means to switch from wireless communication to wired communication, even if multiple devices with the same type of signal are installed nearby, you can reliably remotely control only the target device by simply switching. be able to.

Note that if a cable and a changeover switch are used as the switching transmission means, the function can be easily added as desired.

FIG.

10...Remote control device, 11...Operation switch, 1
3... Transmission circuit, 14.23... Changeover switch, 1
5.24...CPU, 17...Modulation circuit, 18゜2
5... Connector, 20... Indoor control device, 21...
- Receiving circuit, 22... Demodulation circuit, 30... Cable.

Claims (2)

[Claims] 1. In a remote control device comprising a transmitting device that wirelessly transmits a control command signal, and a receiving device that receives the control command signal and processes it with a signal processing means to control a controlled device, an external switching operation is performed. switching transmission means for stopping the transmitting operation of the transmitting side device and the receiving operation of the receiving side device, and inputting the control command signal of the transmitting side device to the signal processing means of the receiving side device via a communication line. A remote control device characterized by: 2. The switching transmission means includes a cable, a first changeover switch that selectively connects an output path of a control command signal of the transmitting side device to the cable, and a first changeover switch that connects the control command signal input path to the signal processing means of the receiving side device with the cable. 2. The remote control device according to claim 1, further comprising a second changeover switch selectively connected to the cable.