JP2858770B2 - Terminal for remote control - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control terminal for controlling a load using load control data transmitted by time division multiplexing from a central control unit.

2. Description of the Related Art Conventionally, a remote control terminal of this type, in which a load is controlled based on load control data time-division multiplexed from a central control device, is connected to the central control device via a pair of signal lines. Connected to a central control unit to receive load control data and control the load.

[Problem to be Solved by the Invention] However, in the above-described conventional example, there is a problem that the load cannot be controlled by the load control data transmitted via the telephone line.

The present invention has been made in view of the above points, and an object of the present invention is to provide a remote control terminal capable of controlling a load by load control data transmitted via a telephone line. Is to do.

[Means for Solving the Problems] A remote control terminal of the present invention includes a central control device connected via a pair of signal lines to a monitor terminal for monitoring switch status and generating monitoring data. A transmission signal transmitting / receiving unit connected via the signal line for transmitting / receiving a transmission signal including address data transmitted by time division multiplexing via the signal line, and receiving load control data transmitted via the telephone line It comprises a telephone control interface and load control means for controlling a load with load control data transmitted as a transmission signal from the central control device or load control data received via the telephone control interface.

According to a second aspect of the present invention, the terminal case accommodating the terminal device circuit has a distribution board agreement size, and further, a third embodiment has a load control relay on the terminal case. Is built-in.

[Operation] The present invention is configured as described above, and the central control device connected to a monitoring terminal for monitoring the state of the switch and generating monitoring data through a pair of signal lines is connected to the signal line. A transmission signal transmitting / receiving unit for transmitting / receiving a transmission signal including address data transmitted by time division multiplexing via a signal line, and a telephone control for receiving load control data transmitted via a telephone line An interface and load control means for controlling the load with load control data transmitted as a transmission signal from the central control device or load control data received via the telephone control interface. It is possible to provide a remote control terminal capable of controlling a load also by load control data transmitted through the device and building a multifunctional control system. .

In addition, if the terminal case that houses the terminal circuit is made of a common size for the distribution board, it can be easily installed in the distribution board, and the terminal case has a built-in load control relay. If it does, it will be possible to achieve compactness.

[Embodiment] FIG. 1 shows an embodiment of the present invention, which is connected to a central controller 1 via a pair of signal lines 4 and is based on load control data which is time-division multiplexed and transmitted from the central controller. In the remote control terminal 3a for controlling the load, a telephone control interface for receiving load control data transmitted via the telephone line l is provided, and the load received via the telephone control interface is provided. A load control means is formed so as to control the load with control data or load control data transmitted from the central control device 1. Here, the telephone control interface and the load control means are an arithmetic processing circuit 10 comprising a CPU.
, A surge absorbing circuit 11 for absorbing surge noise superimposed on the telephone line 1, and an incoming detection circuit 12 for detecting an incoming signal.
And a network control circuit for DC-closing the telephone line l as necessary
13, a low-pass filter 14, a line signal receiving unit 15a for receiving a load control data signal (DTMF signal, coded signal, voice signal, etc.) transmitted via the telephone line 1, and transmitting a load operation confirmation signal. And a password setting circuit 16 for setting a 4-digit password for telephone control.
A transmission signal transmitting / receiving unit 17 for transmitting / receiving a transmission signal for time division multiplex transmission, an address setting circuit 18 for setting a unique address for time division multiplex transmission, and outputting a drive signal of a load control relay and monitoring a load operation. It is formed of a control monitoring circuit 19 for receiving a signal. In the figure, reference numeral 20 denotes a changeover switch for changing a response time when a call is received.

FIG. 2 shows the structure. A terminal case 31 for housing a printed circuit board 32 on which a terminal circuit is mounted has a body 31a.
And the cover 31b, and by arranging the terminal case 31 to have a common size of the distribution board, the terminal case 31 can be easily arranged in the distribution board. Needless to say, the terminal device case 31 may be of a wall-embedded type, an exposed mounting type, or a device built-in type.

Also, in the recess provided at the center of the terminal device case 31, four rotary switches of the password setting circuit 16 are provided.
A 6-bit dip switch of the address setting circuit 18 is provided, and an openable door 33 is provided at the opening of the recess. A signal line 4 is connected to one end of the terminal case 31.
A pair of terminals 24a to which the telephone line l is connected are provided, and a pair of terminals 25 to which a load control relay is connected are provided at the other end. Is covered with a terminal cover 36.

Now, the arithmetic processing circuit 10 receives load control data which is time-division multiplexed transmitted from the central control device 1 via the signal line 4 via the transmission signal transmitting / receiving section 17 and controls the load based on the load control data. In addition to performing a normal remote control operation (to be described later in detail), load control data transmitted via the telephone line 1 is received and a remote control operation of the load is performed. Here, the remote control performed via the telephone line 1 is performed as follows.

First, when an incoming signal is detected by the incoming detection circuit 12, a DC connection is performed by the network control circuit 13 for a preset response time. Next, when the transmitted personal identification number matches a previously registered personal identification number, load control data transmitted subsequently is received and load control is performed. next,
The operation confirmation signal of the load is transmitted to the control side via the telephone line l, the DC connection is released, and the remote control operation by the telephone is completed.

FIG. 3 shows another embodiment having a built-in load control relay, and is a remote control terminal similar to the embodiment of FIG.
In 3a, a relay control circuit 22 including a load control relay and its drive circuit, and a monitor circuit 23 for monitoring an operation state of the load are provided. In the figure, 24 is a manual control switch for manually turning on and off the load, and 25 is a constant voltage power supply circuit.

FIG. 4 shows a schematic configuration of a control system using the remote control terminal 3a according to the present invention.
A plurality of monitoring terminals 2 for monitoring switches S _{1 to} S ₄ having unique addresses, and a control terminal for controlling loads L _{1 to} L ₄
3, 3a, the wireless relay terminal 7, the external interface terminal 8, and the pattern setting terminal 9 are connected by a pair of signal lines 4 and sent from the central control unit 1 to the signal line 4. As shown in FIG. 5 (a), the transmission signal Vs has a start pulse signal ST indicating the start of signal transmission, a mode data signal MD indicating a signal mode, and an 8-bit address for calling the terminals 2, 3a, 7 to 9. address data signal AD for transmitting data, control data signal CD for transmitting the control data for controlling the load L ₁ ~L ^4, check sum data signal CS and the terminal device 2, 3a, to set the return time period from 7-9 This is a multi-pole (± 24 V) time-division multiplex signal composed of a return standby signal WT, and data is transmitted by pulse width modulation. When the address data of the transmission signal Vs received via the signal line 4 matches the own unique address data, each of the terminals 2, 3a, 7 to 9 takes in the control data of the transmission signal Vs and transmits the control data. Signal Vs return wait signal WT
The monitoring data signal is synchronized with 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 also includes a dummy signal transmitting means for constantly transmitting a dummy transmission signal in which the mode data signal MD is set to the dummy mode, and any one of the monitoring terminal 2 or the wireless relay terminal 7 and the external interface terminal. 8. When an interrupt signal Vi as shown in FIG. 5 (b) returned from the pattern setting terminal 9 is received, the interrupt generating terminal
An interrupt processing means for detecting the terminals 2, 7 to 9 and accessing the terminals 2, 7 to 9 to return the monitoring data is provided. The central control unit 1 also uses the monitoring data returned from the monitoring terminal 2 or the wireless relay terminal 7, the external interface terminal 8, and the pattern setting terminal 9 to the central control unit 1 as described above. as well as it generates control data to be transmitted to the control terminal unit 3,3a controls the load L ₁ ~L ₄ corresponding to have the signal line 4 and the control data
And controls the load L ₁ ~L ₄ by time division multiplexing on the control terminal unit 3,3a through.

The wireless relay terminal 7 includes an optical wireless transmitter Y,
A terminal for relaying data of an optical wireless system composed of an optical wireless receiver 受 信 and a wireless signal line 4a. The optical signal transmitted from the optical wireless transmitter Y is received by the optical wireless receiver The received data is received via the wireless signal line 4a, and the data is transferred to the central controller 1. The external interface terminal 8 is connected to an external control device 8a.
The pattern setting terminal 9 is a terminal that transfers pattern control data input from the data input unit 9a to the central control device 1. The monitoring terminal 2 and the control terminals 3, 3a provided in the distribution board 6 or the relay control board 6a have a distribution board agreement size, and the control output thereof is used to control load control. A remote control relay (latching relay that can be turned on / off by a hand switch) 5 is controlled.

[Effects of the Invention] The present invention is configured as described above, and the above signal is sent to a central control unit connected via a pair of signal lines to a monitoring terminal that monitors the state of the switch and generates monitoring data. A transmission signal transmission / reception unit connected via a line for transmitting / receiving a transmission signal including address data transmitted by time division multiplexing via a signal line, and a telephone control for receiving load control data transmitted via a telephone line And a load control means for controlling the load with load control data transmitted as a transmission signal from the central control device or load control data received through the telephone control interface. Of course, the telephone terminal has a telephone control interface, so that the load can be controlled by the load control data transmitted from the central control unit as a transmission signal. Thus, the load can be controlled by the load control data transmitted via the telephone line without increasing the load on the central control device, so that a multifunctional control system can be constructed. In addition, if the terminal case that houses the terminal circuit is made of a common size for the distribution board, it can be easily installed in the distribution board, and the terminal case has a built-in load control relay. By doing so, it is possible to reduce the size.

[Brief description of the drawings]

1 is a block circuit diagram of one embodiment of the present invention, FIG. 2 is an exploded perspective view of the embodiment, FIG. 3 is a block circuit diagram of another embodiment, FIG. 4 is a schematic configuration diagram of a control system, FIG. The figure is an operation explanatory view of the above. 1 is a central control unit, 2 is a monitoring terminal, 3 and 3a are control terminals, and 4 is a signal line.

Claims (3)

(57) [Claims] 1. A central control unit, which is connected through a pair of signal lines to a monitoring terminal that monitors the state of a switch and generates monitoring data, is connected through the signal line, and is connected through the signal line. A transmission signal transmission / reception unit for transmitting / receiving a transmission signal including address data transmitted by time division multiplexing, a telephone control interface for receiving load control data transmitted via a telephone line, and a transmission signal from a central control unit. A load control means for controlling a load based on the received load control data or the load control data received via the telephone control interface. 2. The remote control terminal according to claim 1, wherein the terminal case housing the terminal circuit has a distribution board contract size. 3. The remote control terminal according to claim 1, wherein a load control relay is built in the terminal case.