JP2001242973A - Ha interface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a HA interface that can easily change the connection of an electric appliance to the interface unit from direct connection to indirect connection and vice versa, using HA extension terminal. SOLUTION: The HA interface that is used for connecting an electrical appliance 1 such as room air-conditioner, etc., to IFU 2, contains a circuit that enables direct connection of the electrical appliance 1 to IFU 2 just by using connecting wires 3a, 3b, 3c and 3d and another circuit that enables connection of the electrical appliance 1 to IFU 2 using connecting wires 3a, 3b, 3c, 3c and the HA extension terminal 4 which is stored in the IFU 2, and switches 5a, 5b, 5c and 5d are provided which are used to change the two circuits as mentioned above.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a home automation system (HA) for organically linking home appliances with each other.
System) and an HA interface for connecting an interface unit (IFU).

[0002]

2. Description of the Related Art An interface unit (hereinafter referred to as IFU) provided between a device 21 such as a room air conditioner and a controller (not shown) for controlling and monitoring the device via a home bus (not shown). The lengths of the connection lines 23a, 23b, 23c and 23d for interconnecting are defined within 1.9 m according to the Japan Electrical Manufacturers' Association standard JEM1427. Therefore, to extend the distance between the device 21 and the IFU 22, the HA extension terminal 24 is used. However, if the HA extension terminal 24 is used, the home automation interface (hereinafter, referred to as the HA interface) of the IFU 22 must be changed.

When the device 21 and the IFU 22 are directly connected, as shown in FIG.
The control circuit for transmitting a control signal from the device 22 to the device 21 includes a connection line 23a in which the light emitting diode of the first photocoupler 25 is connected to the internal circuit of the IFU 22 and the collector of the transistor of the first photocoupler 25 is connected. The connection line 23 b connected to the emitter is output from the IFU 22. Further, a monitor circuit for transmitting a monitor signal from the device 21 to the IFU 22 to display the operation state / stop state of the device 21 includes a transistor of the second photocoupler 26 connected to an internal circuit of the IFU 22 and a second photocoupler. The connection line 23c connected to the anode of the light emitting diode of the coupler 26 and the connection line 23d connected to the cathode are
Departure from 22. These four connection lines 23a,
Headers 23b, 23c, and 23d are provided with a header 27 at the tip, and can be connected to a socket 28 provided in the device 21.

[0004] The equipment 21 and I using the HA extension terminal 24
When the FU 22 is connected, as shown in FIG. 3, the control circuit determines that the light emitting diode of the first photocoupler 25 is an IFU.
22, the power supply is connected to the collector of the transistor of the first photocoupler 25, the extension line 29 a is connected to the emitter of the transistor, and the output from the IFU 22. An HA extension terminal 24 is provided at the end of the extension line 29a, and is connected to the anode of the light emitting diode of the third photocoupler 30 inside the HA extension terminal 24. By providing a power supply separately, a current sufficient to normally operate the photocoupler 30 can be supplied even when the extension line 29a is long. The extension line 29b connected to the cathode of the light emitting diode of the third photocoupler 30 is HA
The output from the extension terminal 24 is grounded inside the IFU 22. The connection line 23a is connected to the collector of the transistor of the third photocoupler 30, and the emitter is connected to the connection line 2
3b is connected, and the line is output from the HA extension terminal 24.
In the monitor circuit, the transistor of the second photocoupler 26 is connected to the internal circuit of the IFU 22, the power supply is connected to the anode of the light emitting diode of the second photocoupler 26, and the extension line 29c is connected to the cathode of the light emitting diode. It has been out of the IFU 22. Extension line 29c is H
The inside of the A extension terminal 24 is connected to the collector of the transistor of the fourth photocoupler 31. An extension line 29d connected to the emitter of the transistor of the fourth photocoupler 31 is output from the HA extension terminal 24 and grounded inside the IFU 22. The connection line 23c is connected to the anode of the light emitting diode of the fourth photocoupler 31, the connection line 23d is connected to the cathode, and the light exits from the HA extension terminal 24. These four connection lines 23a, 23b,
23c and 23d are provided with a header 27 at the tip,
1 and can be connected to the socket 28 provided therein.

[0005]

The circuit of the HA interface is different between the case where the device and the IFU are directly connected and the case where the device and the IFU are connected using the HA extension terminal. Therefore, the circuit must be changed. However, there is a disadvantage that the switching of the connection is troublesome.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the conventional HA interface, an object of the present invention is to easily connect a device to an interface unit either directly or by using an HA extension terminal. It provides an HA interface that can be changed, and its structure consists of devices such as a room air conditioner, a controller for controlling and monitoring the device via a home bus, and matching of interface conditions between the device and the home bus. HA interface of home automation system composed of interface units
The interface unit is provided with a circuit for connecting the device and the interface unit by a connection line, and a circuit for connecting the device and the interface unit by a connection line and an HA extension terminal, and both circuits can be switched by switching means. It was done.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Equipment such as a room air conditioner and an IFU
The HA interface for connecting the
A circuit that can directly connect the FU with the connection line,
The IFU includes a circuit capable of connecting the FU with the connection line and the HA extension terminal, and a changeover switch for switching between the two circuits is provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the HA interface according to the present invention will be described with reference to the attached drawing of FIG.

An HA interface for connecting the device 1 such as a room air conditioner and the IFU 2 is composed of the device 1 and the IF
U2 and a circuit which can be directly connected by connection lines 3a, 3b, 3c and 3d, and a device 1 and IFU2 which are connected by connection lines 3a and 3d.
b, 3c, 3d and a circuit connectable by the HA extension terminal 4 are incorporated in the IFU 2, and changeover switches 5a, 5b, 5c, 5d for switching between the two circuits are provided.

A connection line 3a, 3b,
In a circuit directly connected by 3c and 3d, a control circuit for transmitting a control signal from the IFU 2 to the device 1 for controlling the device 1 includes a light emitting diode of the first photocoupler 6 connected to an internal circuit of the IFU 2, The switch 5a is connected to the collector of the transistor of one photocoupler 6, and the connection line 3a is connected to the switch 5a.
It is departing from. The switch 5b is connected to the emitter of the transistor of the first photocoupler 6, and the switch 5b
A connection line 3b is connected to b, and the line is output from the IFU2.

A monitor circuit for transmitting a monitor signal from the device 1 to the IFU 2 in order to display the operating state and the stopped state of the device 1 has a structure in which the transistor of the second photocoupler 7 has an IFU
2, the switch 5c is connected to the anode of the light-emitting diode of the second photocoupler 7, the connection line 3c is connected to the switch 5c, and the switch 5c exits from the IFU2. The switch 5d is connected to the cathode of the light emitting diode of the second photocoupler 7, the connection line 3d is connected to the switch 5d, and the switch 5d exits from the IFU2.

These four connection lines 3a, 3b, 3c,
3d is provided with a header 8 at the tip and can be connected to a socket 9 provided in the device 1.

In a circuit for connecting the device 1 and the IFU 2 using the HA extension terminal 4, the control circuit includes a light emitting diode of a third photocoupler 10 connected to an internal circuit of the IFU 2, and a third photocoupler. The power supply is connected to the collector of the transistor of the coupler 10, the switch 5 a is connected to the emitter of the transistor, the extension line 11 a is connected to the switch 5 a, and the output from the IFU 2. An HA extension terminal 4 is provided at the end of the extension line 11a, and is connected to the anode of the light emitting diode of the fourth photocoupler 12 inside the HA extension terminal 4. Fourth photo coupler 1
Extension line 11 connected to the cathode of light emitting diode 2
b is output from the HA extension terminal 4 and is connected to the switch 5b inside the IFU 2, and the circuit connected to the switch 5b is grounded. The connection line 3 a is connected to the collector of the transistor of the fourth photocoupler 12, and is output from the HA extension terminal 4. The emitter of the transistor of the fourth photocoupler 12 is connected to the connection line 3 b, and the HA extension terminal 4 is connected.
It is departing from.

In the monitor circuit, the transistor of the fifth photocoupler 13 is connected to the internal circuit of the IFU 2, the power supply is connected to the anode of the light emitting diode of the fifth photocoupler 13, and the switch 5c is connected to the cathode of the light emitting diode. The extension line 11c is connected to the switch 5c, is output from the IFU 2, and is connected to the collector of the transistor of the sixth photocoupler 14 inside the HA extension terminal 4. The extension line 11d connected to the emitter of the transistor of the sixth photocoupler 14 is output from the HA extension terminal 4 and is connected to the switch 5d inside the IFU 2, and the circuit connected to the switch 5d is grounded. . The connection line 3c is connected to the anode of the light emitting diode of the sixth photocoupler 14 and goes out from the HA extension terminal 4, and the connection line 3d is connected to the cathode of the light emitting diode of the sixth photocoupler 14 to extend the HA. Outgoing from terminal 4.

These four connection lines 3a, 3b, 3c,
3d is provided with a header 8 at the tip and can be connected to a socket 9 provided in the device 1.

The switches 5a, 5b, 5c, and 5d are all linked, and by switching the switches 5a, 5b, 5c, and 5d, the circuit for directly connecting the device 1 and the IFU 2 and the device 1 and the IFU 2 are connected to the HA extension terminal 4. And the circuit to be connected can be easily changed.

[0017]

As described above, the HA interface according to the present invention provides a device such as a room air conditioner, a controller for controlling and monitoring the device via a home bus, and matching of interface conditions between the device and the home bus. A circuit for connecting a device and an interface unit to the interface unit by a connection line in an HA interface of a home automation system including an interface unit for improving the performance;
A circuit for connecting the device and the interface unit with a connection line and an HA extension terminal is provided, and both circuits can be switched by switching means, so that the connection between the device and the interface unit is directly connected or the HA extension terminal is connected. This has an excellent effect that any of the connections to be used can be easily changed.

[Brief description of the drawings]

FIG. 1 shows an HA interface according to the invention;
(A) is a circuit diagram in which the device and the IFU are directly connected, and (b) is a circuit diagram in which the device and the IFU are connected using an extension line.

FIG. 2 shows a conventional HA interface, in which a device and I
It is a circuit diagram in case FU is connected directly.

FIG. 3 shows a conventional HA interface, in which a device and I
It is a circuit diagram in case FU is connected using an HA extension terminal.

[Explanation of symbols]

 Reference Signs List 1 device 2 IFU 3a connection line 3b connection line 3c connection line 3d connection line 4 HA extension terminal 5a switch 5b switch 5c switch 5d switch 6 photocoupler 7 photocoupler 8 header 9 socket 10 photocoupler 11a extension 11b extension 11c extension 11d Extension line 12 Photocoupler 13 Photocoupler 14 Photocoupler

Claims (1)

[Claims] 1. An apparatus such as a room air conditioner, a controller for controlling and monitoring the device via a home bus, and an interface unit for matching interface conditions between the device and the home bus. In a home automation system HA interface, a circuit for connecting the device and the interface unit to the interface unit by a connection line, and a circuit for connecting the device and the interface unit to the interface unit by the connection line and an HA extension terminal. And a circuit, wherein both circuits can be switched by switching means.