JP2582842B2 - Remote control system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a central control unit and a plurality of terminals connected via signal lines, and transmitting data by time division multiplex transmission to the terminals. The present invention relates to a remote control system for remotely controlling a connected load.

2. Description of the Related Art As shown in FIG.
A plurality of operation terminals 2 and control terminals 3 each having a unique address are connected to the central control unit 1 via a signal line 4. The central controller 1 sends out the transmission signal Vs to the signal line 4, and this transmission signal Vs is, as shown in FIG. 6, a start signal ST indicating the start point of signal transmission, a signal mode mode signal indicating the MD, the individual to specify the address of the terminal device 2 terminal unit 2 the address signal AD for accessing the load L ₁ ~L ₄ connected to the terminal device 3 for controlling Control signal CD for control, checksum signal C for detecting transmission errors
S, return waiting signal WT that sets the return period from terminals 2 and 3
It is a multipole (± 24V) time division multiplexed signal, and data is transmitted by pulse width modulation. In each of the terminals 2 and 3, when the address data of the transmission signal Vs received via the signal line 4 matches the address uniquely set in the terminals 2 and 3, the control data of the transmission signal Vs is transmitted. And the monitor signal is synchronized with the return signal WT of the transmission signal Vs by the current mode signal (signal line 4).
The signal is transmitted as a short-circuited signal through an appropriate low impedance.

The central control unit 1 includes a dummy signal transmitting unit that constantly transmits a dummy transmission signal in which the mode signal MD is set to the dummy mode, and a sixth signal returned from any of the operation terminals 2.
There is provided an interrupt processing means for detecting the terminal 2 that has generated the interrupt signal Vi at the rise of the interrupt signal Vi when the interrupt signal Vi as shown in FIG. After detecting the terminal device 2, the interrupt processing means
The terminal 2 is accessed to return the monitoring data.
The terminal device 2 for operation are connected switches S ₁ to S ₄ are in synchronization with the start signal ST of the dummy transmission signal when there is monitoring input by the switch S ₁ to S ₄ is operated interrupt An interrupting means for generating a signal Vi and a data returning means for returning predetermined data in response to an access made by the central control unit 1 in response to an interruption of the terminal 2 are provided. The interrupting means synchronizes with the return wait signal WT of the transmission signal in the address confirmation mode from the central control device 1 (to access the terminals 2 having the common upper 4 bits of the address data collectively). Is also provided for returning the lower 4 bits of the address data corresponding to. The central control unit 1 transmits control data to be transmitted to the control terminal 3 having a predetermined address based on the monitoring input state returned from the operation terminal 2 to the central control unit 1 as described above. transmitting an address data and control data to the terminal device 3 to create, it is to control the load L ₁ ~L ₄ connected to the terminal device 3.

Since an address is set in each of the terminals 2 and 3, each terminal 2 and 3 is provided with an address setting unit.
Generally, such an address is set using a dip switch.

[SUMMARY OF THE INVENTION Incidentally, when the switch S ₁ to S ₄ of the terminal device 2 for operation and a wall switch, the DIP switch for address setting, provided on the back side of the terminal unit 2 of the case When setting the address of the terminal 2 for operation, it is necessary to remove the decorative plate on the surface of the case, and setting the address is troublesome.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems, and an object of the present invention is to provide a remote control system that allows an address to be set and confirmed without removing a decorative plate or the like.

Means for Solving the Problems In order to achieve the above object, the present invention provides a plurality of terminals each having a unique address set, each terminal connected via a signal line, and a time division multiplexing. A central control unit for transmitting and receiving data to and from each terminal according to the transmission signal of each terminal. Each terminal can store and hold the address data without power supply, and the stored address data is an address unique to the terminal. A rewritable address storage unit used as a device, a display capable of displaying an address, and a switch capable of scanning address data and selecting address data to be written to the address storage unit each time the operation is performed. The display and the switch are provided on the front side of the terminal case.

[Operation] According to the above configuration, since the switch for address setting and the display for address display are arranged on the front side of the case of the terminal, the address can be set without removing the decorative plate. The address setting work is facilitated, and a display is provided. Each time a switch is operated, the address data is scanned and the address data is selected, so that the displayed address data is displayed on the display so-called. Address data can be set by key scan input, and the switch can also be used as a load control switch.

[Embodiment] As shown in FIG. 1, an operation terminal device 2 converts a transmission signal Vs transmitted through a signal line 4 composed of a pair of lines into a signal that can be processed by a signal processing unit 11. Part 12
And an address storage unit 13 for storing an address unique to the terminal device 3. The signal processing unit 11 is configured using a microprocessor or the like, and when address data is input from the central control unit 1, the address storage unit 13
The operation state of the switch SW is read and, when the address matches, is returned to the central controller 1 as a monitoring signal in synchronization with the return standby signal. Here, in the terminal device 2 described with reference to FIG. 5, _four switches S _{1 to} S ₄ are provided, but in this embodiment, one switch SW is provided for each terminal device 2. I have to. The address storage unit 13 is configured by an EEPROM. Display lamp LD ₁ of the light emitting diodes of the pair (green and red) to the signal processing unit 11 for displaying the state of the load L ₁ ~L _4,
LD ₂ is connected. Here, the off state of the load is green,
The ON state is shown in red. Further, the signal processing unit 11 is connected to a display 14 such as a liquid crystal display so that an address can be confirmed.

This terminal device 2 is, as shown in FIGS. 2 and 3,
The switch SW and the display lamps LD ₁ and LD ₂ are exposed on the surface side of the case 20 having a size corresponding to one wiring device module. The switch SW is a push button switch, and the switch handle 21 for operating the switch SW has a handle body 22 and a transparent cover 23 fitted on the front side of the handle body 22. Is
A printed board 24 serving as a board of the display 14; a conductive rubber 25 connecting the display 14 and the printed board 24; and a spacer 26 for separating the display 14 and the printed board 24 by a predetermined distance.
The nameplate 27 is held between the transparent cover 23 and the front side of the display 14. The transparent cover 23 is formed of acrylic or the like and is detachable from the handle body 22,
When the transparent cover 23 is removed and the nameplate 27 is removed, the indicator 14 is exposed. The printed circuit board 24 is a switch SW
Is connected via a flexible substrate 29 to a substrate 28 to which is connected.

Next, the operation will be described with reference to FIG. When the power is turned on, each terminal 2 reads the address data written in the address storage unit 13 as a specified value at the time of shipment, and operates as an address unique to each terminal 3. That is, when the device is used for the first time after installation, the operation is performed using the address set at the time of shipment. Thus, transmission / reception of the transmission signal Vs between the central control device 1 and the terminal device 2 is performed. When the switch SW is operated, it is possible to switch between a normal load control mode for controlling the load according to the operation time and an address setting mode. That is, when the load is turned on / off, the switch SW is not kept pressed for 2 seconds. Therefore, when the switch is shorter than 2 seconds, the load control mode is determined. When the switch is pressed for 2 seconds or longer, the address setting mode is determined. You do it. In the address setting mode, the display on the display 14 blinks. In this state, the pressing operation of the switch SW is stopped, and when the switch is pressed again, the numerical value displayed on the display 14 increases by one. The displayed numerical value is a numerical value corresponding to the address of the address storage unit 13, and the numerical value increases by one each time the switch SW is pressed once. When the maximum value is reached by pressing the switch SW, the value returns to the next minimum value. Here, when the switch SW is continuously pressed, the numerical value continuously increases, and high-speed scanning can be performed. In this way, when the numerical value displayed on the display 14 reaches a desired value, the pressing operation is stopped, and if there is no operation for more than 5 seconds, the same address as the numerical value displayed in the address storage unit 13 is stored in the address storage unit. 13 is written to the display 14
Is released, and the operation returns to the normal operation.

After the address setting and confirmation are completed, the transparent cover 23 may be attached to the handle body 22 so as to cover the display 14 with the nameplate 27. Thus, the switch SW
Can be used to set the address, and the display can be checked on the display 14 provided on the front side of the terminal device 2. Therefore, it is not necessary to remove the decorative plate as in the conventional case, and the address setting can be performed. Work and confirmation work can be performed efficiently.

[Effects of the Invention] As described above, according to the present invention, a plurality of terminals each having a unique address set therein, each terminal connected via a signal line, and each terminal connected by a time division multiplex transmission signal. A central control unit that exchanges data with the terminal device, each terminal device can store and hold address data without power supply, and the stored address data can be used as an address unique to the terminal device. An address storage unit, a display capable of displaying an address, and a switch capable of scanning address data each time the operation is performed and selecting address data to be written to the address storage unit, comprising the display and the switch. Since it is provided on the front side of the terminal case, it is possible to set the address without removing the decorative plate. In addition to facilitating the recognition operation, the display is equipped with a display, and every time the switch is operated, the address data is scanned and the address data is selected. Therefore, the scanned address data is displayed on the display, so-called key scan input. If the switch is also used as a load control switch, the number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an operation terminal device used in the present invention, FIGS. 2 and 3 are perspective views and main part sectional views showing the appearance of the operation terminal device used in the same embodiment, and FIG. FIG. 5 is a schematic diagram of a remote control system according to the present invention, and FIG. 6 is an operational diagram showing a format of a transmission signal of the above. 1. Central control unit 2. Terminal unit 14. Display unit 20
... Case, 21 ... Switch handle, 22 ... Handle body, 23 ... Transparent cover, 27 ... Nameplate, SW ... Switch.

Claims (1)

(57) [Claims] 1. A plurality of terminals each having a unique address set thereto, each terminal being connected via a signal line, and exchanging data with each terminal by a time division multiplex transmission signal. A central control unit for performing the operation, each terminal device stores and retains address data without power supply, a rewritable address storage unit in which the stored address data is used as an address unique to the terminal device, and displays the address. And a switch capable of scanning address data and selecting address data to be written to an address storage unit each time an operation is performed, the display and the switch being provided on a front side of a terminal case. A remote control system, which is provided.