JPH07131861A - Remote control system - Google Patents

Abstract

PURPOSE:To provide the remote control system which does not operate except for a target equipment to be controlled. CONSTITUTION:With a start button pressed (ST1), a response request is sent out of a remote control unit (ST2), a characteristic address signal is sent back from an actuator side in response to the access (ST4), and this address signal is resent to the actuator side by the remote control unit (ST6); and the actuator side receives it and displays the responding operation (ST7, ST8, and ST9) when its own address can be confirmed. On the remote control unit side, the pilot lamp is viewed to confirm that the target actuator responds (ST10), and when, for example, a 'close' command button is turned ON (ST11), an address signal plus a close command signal are sent (ST12).

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 controlling a plurality of controlled devices such as electric valves, actuators and process industrial instruments.

[0002]

2. Description of the Related Art In a conventional remote control system, for example, infrared rays are used as a communication signal when a plurality of actuators are arranged adjacent to each other, and a remote control unit controls a specific actuator from a position slightly away from the actuator. There is something. In this remote control system, when the open command button of the remote control unit is pressed, an infrared digital signal is transmitted, and when the receiver of the actuator receives the signal and confirms that it is an open command, it operates in the open direction. Similarly, if the close command button of the remote control unit is pressed, the actuator operates in the closing direction.

[0003]

In the above-mentioned conventional remote control system, the infrared signal is transmitted not only in one direction but also in one direction.
Spread over a range of angles. Therefore, there is a problem that adjacent actuators other than the designated actuator may receive a signal from the remote control unit and operate in response to the signal.

The present invention has been made in view of the above problems, and an object thereof is to provide a remote control system that does not operate except for a designated controlled device.

[0005]

A remote control system according to the present invention comprises a remote control unit and a controlled device, each of which is provided with a communication unit for transmitting and receiving signals in a non-contact manner. A response request signal is output to the controlled device, the address signal of the controlled device is returned to the controlled device in response to the response request signal, and an address signal and an operation command signal of the controlled device for operation are provided. The remote control unit includes means for outputting.

In this remote control system, a response request signal is first issued from the remote control unit, and the controlled device receiving this signal transmits its own address signal to the remote control unit. The remote control unit receives the address signal and transmits the address signal and the operation command signal to the partner controlled device. Since the controlled device operates only in response to the operation command signal with its own address signal,
The malfunction of other controlled devices is avoided.

[0007]

The present invention will be described in more detail with reference to the following examples. FIG. 1 is a block diagram showing the configuration of a remote control unit of a remote control system according to an embodiment of the present invention. The remote control unit 10 includes an infrared transmitter 1 and
The infrared receiver 2, the CPU 3, the memory 4, the start button 5, the open button 6, and the close button 7 are provided.

FIG. 2 is a block diagram showing the configuration of the controlled equipment of the remote control system according to the embodiment of the present invention. The controlled device 20 includes an infrared transmitter 11, an infrared receiver 12, an address holder 13 that holds a unique address signal, a CPU 14, and an actuator 15 for opening and closing the valve 16. In FIG. 2, one controlled device 20 is shown, but in this embodiment, a plurality of controlled devices having the same configuration are provided, and each remote controller unit 10 controls each actuator 15. It has become so.

The remote control unit 10 has a function of transmitting a response request signal when the start button 5 is operated,
It has a function of temporarily storing the address signal returned from the controlled device 20, and a function of transmitting the open command signal or the close command signal together with the address signal by operating the open button 6 or the close button 7. ing. The controlled device 20 has a function of receiving the response request signal sent from the remote control unit 10 and returning its own unique address signal, and confirming that the address signal sent back from the remote control unit 10 is its own. It has a function of confirming and a function of receiving the open command signal or the close command signal attached with its own address signal sent from the remote control unit 10 to open / close the actuator 15.

Next, the overall operation of the embodiment remote control system will be described with reference to the flow chart shown in FIG. In the following, as shown in FIG. 5, the three actuators A ₁ , A _1
2 and A ₃ are adjacent to each other, and it is assumed that the remote control unit 10 communicates with the actuator A ₂ . First,
The remote control unit 10 is directed toward the actuator A ₂ and the start button 5 is operated to turn on the switch (step ST1). In response to this, the remote control unit 10
As a result, a response request signal is transmitted (step ST2).
This timing is set to t ₁ shown in FIG. The actuator A ₂ side receives the response request signal (step ST
3) The self address signal "2" held in the address holder 13 is transmitted (step ST4). This transmission timing is t ₂ following t _{1 as} shown in FIG.

[0011] In the remote control unit 10 receives an address signal "2" (step ST5), which transmits to the actuator "2" side at the timing t _3, and returns (step ST6). The actuator "2" side receives the returned address "2" signal (step S
T7), and confirm that the address is its own (step 8). If it is not its own address, nothing is responded, but if it is confirmed that it is its own address, the indicator light indicating that it has responded is turned on (step ST9).

On the remote control unit 10 side, the operator visually confirms the indicator light on the actuator A ₂ side to confirm that it is the target actuator (step 1).
0). Next, for example, when instructing "close", the operator operates the close button 6 of the remote control unit 10 to turn on the switch (step ST11). When the close button 6 is turned on, the remote control unit 10 sends an open command signal to the address signal of the other party (step ST12). This timing is t ₄ shown in FIG.

The actuator 2 receives this address signal + close command signal (step ST13), confirms that the address signal is its own address (step ST14), and operates the actuator 15 in the closing direction (step ST14). Step ST15). When a plurality of controlled devices (actuators) respond to the response request from the remote control unit 10, only the first received address is valid. When the target actuator does not respond, the start button 5 of the remote control unit 10 is pressed again toward the target actuator,
The same processing as shown in FIG. 3 may be repeated.

In the above embodiment, infrared rays are used for the communication between the remote control unit and the controlled device, but the communication method is not limited to this, and visible light or radio wave is used. May be used for communication.

[0015]

According to the present invention, a response request signal is transmitted from a remote control unit, a controlled device which receives the response request signal returns a self-specific address signal, and the remote control unit issues a necessary operation command to this address signal. With a signal,
Since only the controlled device which has transmitted its own address signal to the target controlled device performs the operation according to the operation command, it is possible to prevent other controlled devices from operating by mistake. Further, since the remote control unit can automatically specify and control the address without knowing the address, it is easy to handle.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a remote control unit of a remote control system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a controlled device of the remote control system of the embodiment.

FIG. 3 is a flowchart for explaining the operation of the remote control system of the same embodiment.

FIG. 4 is a time chart for explaining the operation of the remote control system according to the embodiment.

FIG. 5 is a diagram showing an example of an arrangement relationship between a remote control unit and actuators of the system of the embodiment.

[Explanation of symbols]

 10 Remote Control Unit 20 Controlled Device 5 Start Button 6 Close Button 7 Open Button 13 Address Holder 15 Actuator

Claims (1)

[Claims] 1. A remote control system comprising a remote control unit and a controlled device, each of which is provided with a communication unit for transmitting and receiving signals in a non-contact manner, wherein the remote control unit includes a unit for outputting a response request signal, The remote control unit is provided with means for returning an address signal of its own in response to a response request signal to the equipment, and means for outputting an address signal and an operation command signal of a controlled equipment for operation. And remote control system.