JPH062444Y2 - Load control device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an improvement of a so-called home controller, which is a so-called home controller, for centrally monitoring and controlling loads such as lighting and air conditioners in a home. .

[Conventional technology]

Figure 5 shows "Electricity and construction" published by Ohmsha in November 1985.
FIG. 34 is an external view of a terminal of a conventional load control device of this type shown on page 160 of FIG. FIG. 4 is a configuration diagram of a load control system to which the conventional example and the present invention are applied.

In the figure, (1) is a terminal device that turns on / off a load such as a lighting / air conditioner according to a control signal from the controller (6), monitors the state of the load, and returns a state signal. The pieces are distributed. (2) is a terminal (1)
An outlet provided on the front of the
Connect the power plug of the load such as the air conditioner. (3) is a terminal provided on the back surface of the terminal device (1), which is plugged into an indoor outlet provided on the wall surface of the room and receives a power supply and a control signal from this. (4) is a self-address setting switch provided on the front of the terminal (1), and (5) is a hand switch provided on the front of the terminal (1) for directly controlling loads such as lighting and air conditioners. It is a thing. (6) is a controller provided at a place where centralized monitoring is possible in the home, and is provided with operation switches for load control and a load status indicator. (7)
Is an information transmission line that connects the controller (6) and the terminal device (1) and transmits control signals and status signals.In this example, a power line is used, which is modulated by the control signals and status signals. It is configured to superimpose high frequencies. (8) is a blocking filter that prevents leakage and intrusion of superimposed radio waves.

Next, the operation will be described. When the operation switch of the controller (6) is turned on, the controller (6) creates data by adding the address of the controlled terminal device (1) to the ON command signal, modulates the high frequency with this and transmits the information transmission path (7 ) To. Upon receiving this ON command signal, the terminal device (1) outputs the power supply voltage applied to the terminal (3) to the outlet (2), and the power supply plug inserted therein outputs the power supply voltage to the outlet such as lighting and air conditioners. Turn on the load. Then when the load is turned on, the terminal device
(1) creates data in which the self-address is added to the ON state signal, modulates the high frequency with this, and sends it back to the controller (6) via the information transmission path (7). Then the controller (6)
Indicates that the load of the terminal device (1) corresponding to the received address is ON.
It will be displayed on the status display. By such a series of operations, the load connected to the plurality of terminals (1),
Centralized control and monitoring are possible with the controller (6).

[Problems to be solved by the invention]

Since the conventional load control device is configured as described above,
Since various loads can be freely connected to the outlet of the terminal, it is difficult to grasp the load on the controller side, and carelessly connect loads that are dangerous to control from the outside, such as electric heaters. There was a problem that it would be done.
Furthermore, the outlet outputs electric power even when the load is not connected to the outlet, and there is a danger of electric shock if a metal is accidentally inserted into the outlet.

This invention was made in order to solve the above problems, and to identify the type of load connected to the outlet of the terminal and when the load type identification code is input, power is supplied to the load. The purpose is to obtain a load control device that supplies

[Means for solving problems]

The load control device according to the present invention has a state in which a plurality of pins inserted into a jack of the terminal device are connected to a connection member of a load to an outlet of the terminal device when the connection member is connected to the outlet of the terminal device. According to the above, a load code input means for inputting a code indicating the type of connection load is provided,
Further, the terminal device is provided with a protection device that enables power to be supplied to the load when a load code is input.

[Action]

In the load control device according to the present invention, when a connecting member such as a power plug of the load is connected to an outlet of the terminal, a code indicating the type of the load is indicated by the state of a plurality of pins inserted into the jack of the terminal. It is input to the controller via and enables closing of the power supply switch.

[Example of device]

An embodiment of the present invention will be described below with reference to the drawings. First
Figure is an external view of the terminal and adapter, Figure 2 is its circuit diagram,
FIG. 3 is a reference diagram of an information transmission packet.

In FIG. 1, (1) is a terminal device, an outlet (2),
It is provided with a terminal (3), a self address setting switch (4), and a hand switch (5). Here, the outlet (2) has a T-shaped outlet (2a) (2b) shape to prevent incorrect connection of the load, unlike the N-shaped power plug of general electric appliances, which is a normal load. It has become. Reference numeral (11) is a cord setting jack provided on the lower part of the outlet (2) on the front surface of the terminal (1). By the way, (9) is an adapter as a connecting member to the terminal device (1), and the socket (2a) of the outlet (2) (2
Terminals (9a) and (9b) that have the same shape as b), and the cord setting jack
The cord setting pin (10) inserted in (11) and the power plug (13a) of the lighting (13b) which is a load, which is hidden in Fig. 1.
And a socket (23) that can be connected to. This socket (23)
The connection between the power plug (13a) and the power plug (13a) is structured so that it cannot be easily removed. Further, the pin (10) disconnects an unnecessary pin according to the cord of the load to be connected.

In FIG. 2, (14a) is a capacitor for separating the signal from the power supply, (14b) is a signal coupling transformer, (14) is a communication control unit, (15) is a microcomputer (CPU), and (15a) is CPU (1
Output terminal of (5), (16) is a relay contact provided between the terminal (3) and the outlet (2), which is applied to the terminal (3),
Turn on / off the power supply voltage supplied to (2). (17) is a drive coil for the relay contact (16), (18) is a transistor for driving the drive coil (17), (9) is a series resistor, (20) is an AND gate, and (21) is a NAND gate. (22) is a resistor that pulls up the input of the jack (11).

Next, the operation will be described. Insert the power plug (13
Connect the terminals (9a) and (9b) of the adapter (9) to which
Insert the pin (10) into the sockets (2a) and (2b) of (2) and jack (11).
Pin (10) terminals (10a) (10b) (1
0c), (10d) and (10e) are all electrically connected, and the terminal (11a) of the jack (11) is at "L" potential, so it is "H" by the pull-up resistor (22) until then. All the remaining terminals (11b) (11c) (11d) (11e) which have been changed to "L". This code "0000" is input to the CPU (15). So CPU (1
5) identifies that the lighting is connected to the load from this input code. Then, the CPU (15) inserts the illumination code of "0000" into the data area according to the packet format of information transmission as shown in FIG. 3, modulates the high frequency with the communication control unit (14), and (14b), capacitor (14a), terminal
This data is transmitted to the controller (6) via (3), the wall outlet (12) and the information transmission path (7). Well Jack
Signals at each terminal (11b) (11c) (11d) (11e) of (11) are NAND gates
It is also input to (21), and the output of this NAND gate (21) changes to "H". Therefore, the terminal device (1) is the controller (6)
When the ON command signal from the CPU (15) is received, the output terminal (15
Since a) is set to "H", the output of the AND gate (20) is also "H".
Then, the transistor (18) becomes conductive, the relay contact (16) closes, the power supply voltage input to the terminal (3) is output to the outlet (2), and the lighting can be turned on. Now, the controller (6) that has received the data from the terminal device (1) can recognize the type of the operated load from this data, and therefore, for example, turns on the display of "lighting ON".

However, if the adapter (9) is not connected to the terminal device (1), the terminals (11b) (11c) (11d) (11e) of the jack (11) are all "H", and the NAND gate (21) Output becomes "L".
Therefore, by the ON command signal from the controller (6), the CPU
Even if the output terminal (15a) is set to "H" to turn on the load, the transistor (18) is turned on by the function of the AND gate (20).
The power supply voltage is not output to the outlet (2) because it cannot be turned on. Therefore, it is safe even if a dangerous load such as an electric heater in which the power plug shape of the load is not, for example, a T-shaped power plug is accidentally connected to the outlet (2). In this way, the NAND gate (21) and the AND gate (20) function as a protection device that enables the power supply from the outlet (2) to the load only after the load code is input to the terminal device (1). .

Also, the connection between the power plug (13a) and the socket (23) of the adapter (9) is fixed so that it cannot be easily removed by the user, so connect a load other than the cord specified by the user. You can make it impossible.

In the above embodiment, the case where the load cord setting pin (10) is provided in the adapter (9) inserted between the outlet (2) of the terminal device (1) and the power plug (13a) of the load has been described. However, the load power plug (13a) may be integrated with the load cord setting pin (10).

Furthermore, as a load code input means, jack (10) and pin (1
Although the method according to 1) has been described, the present invention is not limited to this, and a switch is used instead of the jack (11) and an adapter is used.
Connect the (9) to the terminal (1) so that the switch that generates the load cord is automatically turned on.
If the load code is input at the same time when the load is connected to (2), the same effect is obtained.

Further, the information transmission path (7) is not limited to the one in which the high frequency signal is superimposed on the power line, and another dedicated line may be used.

[Effect of device]

As described above, according to the present invention, when a connecting member for connecting a load to an outlet of a terminal device is connected to an outlet of the terminal device, a plurality of pins inserted into a jack of the terminal device are connected. Depending on the state, a load code input means for inputting a code indicating the type of connection load is provided, and a protection device for supplying power to the load when the load code from the connection member is input to the terminal device is provided. So
When the load is connected to the outlet through the connecting member, the load code is transmitted to the controller via the terminal,
Not only can the controller easily understand the load,
Even if the power plug of the load is directly connected to the outlet without going through a connecting member, the power is not supplied to the outlet, so the power plug of a dangerous load such as an electric heater is accidentally connected directly to the outlet, or No problems such as fire or electric shock will occur even if you directly contact the outlet.

[Brief description of drawings]

FIG. 1 is an external view of a terminal and an adapter of a load control device according to an embodiment of the present invention, FIG. 2 is a circuit diagram thereof, FIG. 3 is a reference diagram of an information transmission packet, and FIG. A system configuration diagram of a load control device to which an embodiment of the invention is applied,
FIG. 5 is an external view of a terminal unit of a conventional load control device. In the figure, (1) is a terminal device, (2) is an outlet, (9) is an adapter,
(9a) and (9b) are terminals, (10) are pins, and (11) are jacks. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (3)

[Scope of utility model registration request] 1. A controller for centrally controlling and monitoring a load, a terminal provided with a terminal to be inserted into an indoor outlet and an outlet to which a power plug of the load is connected, and the controller and the terminal device. In a load control device which is composed of an information transmission line to be connected and which controls a load by a command signal from the controller and sends back a load status signal, When the power plug of the load is connected to the outlet of the terminal between the power plug and the power plug, a code indicating the type of the connected load is displayed according to the states of a plurality of pins inserted into the jack of the terminal. A load control device comprising a connecting member having a load code inputting means for inputting to the load control device. 2. The load control device according to claim 1, wherein the connection member and a power plug of the load are integrally formed. 3. A utility model registration claim according to claim 1 or 2, characterized in that the terminal device is provided with a protection device capable of supplying electric power to a load from an outlet when a load code is inputted. The load control device according to item.