JPH0737400Y2 - Interface unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an interface unit of a telephone control system for remotely controlling a load via a telephone line.

[Prior Art] A telephone control system takes in a control signal transmitted from a control side through a telephone line to remotely control a controlled load, and a monitor signal indicating an operating state of the controlled load via a telephone line. And sends it back to the control side.
In this type of conventional telephone control system, an interface unit is provided between the telephone control device connected to the telephone line and the controlled load, and the controlled load is controlled and the monitor signal is returned via this interface unit. Was doing. In this interface unit, an input / output terminal to which a signal line from the telephone control device is connected is provided on the back surface of the case that houses the interface circuit, and the telephone control device and the interface unit are connected to each other by using the signal line previously wired in the wall surface. Was making a connection. However, because the connection to the controlled load was to connect the modular plug of the signal line from the controlled load to the modular outlet provided on the front surface of the case of this interface unit,
There is a problem that the wiring with the controlled load is exposed on the surface and the appearance is bad. Therefore, there is a desire to wire the controlled load in the wall as well as the telephone control device.

[Problems to be Solved by the Invention] The present invention has been made in view of the above points, and an object thereof is to provide an interface unit capable of wiring a controlled load within a wall surface. To do.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention is provided with a modular outlet to which a modular plug of a signal line passing through the outside of a wall from a controlled load is connected to a front surface of a case, and The rear surface of the case is provided with a first input / output terminal to which a signal line from the telephone control device is connected, and a second input / output terminal to which a signal line passing through the inside of the wall surface from the controlled load is connected, The connection state that connects the modular plug of the signal line that has passed through the outside of the wall from the controlled load to the modular outlet,
The connection state in which the signal line passing through the wall surface from the controlled load is connected to the second input / output terminal can be selected.

[Operation] As described above, according to the present invention, by providing the second input / output terminal on the rear surface of the case to which the signal line passing through the wall from the controlled load is connected, the signal line previously wired in the wall is provided. By connecting to the second output terminal on the back surface of the case, wiring with the controlled load can be performed within the wall surface.

[Embodiment] FIGS. 1 to 7 show an embodiment of the present invention. 2 and 3 show the schematic configuration of the control system. The control signals, which are push button signals emitted from the telephone TEL on the control side, are the central office NTT, the protector H, the divider K and the telephone. It is transmitted through the line 1 and received by the telephone control device 1, and the telephone control device 1 takes in this control signal and outputs a load control signal V _c for controlling the controlled load 2 such as a JEM-A compatible air conditioner. The monitor signal V _m which is formed and output through the interface unit 3 and which is taken in through the interface unit 3 and which indicates the operating state of the controlled load 2 is returned to the control side through the telephone line 1. There is. As shown in FIG. 3, the telephone control device 1 includes a personal identification number setting switch 10 for setting a four-digit personal identification number, a telephone circuit switch 11 for selecting a telephone circuit, and a light emitting diode for displaying a circuit state of the telephone circuit. 12, operation display light emitting diodes 13 and 14 for displaying the operating state of the controlled load 2, and a manual switch 15 for manually controlling the controlled load 2 are provided.

The circuit configuration of the interface unit 3 is, as shown in FIG. 4, a load control signal input from the telephone control device 1 via a pair of control signal input terminals TC ₁ and TC _2.
A control signal receiving unit 4 including a diode D ₁ that receives V _c and drives the first photocoupler 5, a capacitor C _11, and resistors R ₁ and R ₂ , and a pair of monitor signal input terminals M ₁ and M ₂ . A diode that receives a monitor signal V _m input from the controlled load 2 side via the drive circuit and drives the second photocoupler 8.
A monitor signal receiving section 7 composed of D ₃ , a capacitor C ₁₃ and a resistor R _4, and a diode D ₂ , a capacitor, C for sending the output of the first photocoupler 5 through a pair of control signal output terminals C ₁ and C _{2. A} control signal transmission unit 6 including a resistor ₁₂ and a resistor R _3, and a second
The output of the photocoupler 8 is smoothed and the waveform is shaped and output through the pair of monitor signal output terminals TM ₁ and TM ₂ , the transistor Q ₁ , the diode D ₄ , the capacitors C ₁₄ and C _15, and the resistors R _{5 to} R _7. And a monitor signal transmitting section 9 including. Incidentally, FIG. 5 shows a connection diagram of the interface unit 3.

Now, the load control signal V _c input to the control signal input terminals TC ₁ and TC ₂ has a pulse width of 200 as shown in FIG. 6 (a).
The pulse interval (ON / OFF interval of the controlled load 2) is set to at least 200 ms or more. The load control signal V _c is received by the control signal receiving unit 4 and is output via the photo coupler 5 and the control signal transmitting unit 6, and the control signal output terminals C ₁ and C ₂
The load control signal V _c ′ output via the signal is almost the same as the load control signal V _{c as} shown in FIG. 6 (b).

On the other hand, the monitor signal V _m input to the monitor signal input terminals M ₁ and M ₂ includes a static signal V _ms as shown in FIG. 6 (c) and a dynamic signal V _m as shown in FIG. 6 (d). V _md (however, T ₁ ≦ 20 ms, T ₂ ≧ 1 ms, T ₂ / T ₁ ≧ 0.15), and this monitor signal V _m is received by the monitor signal receiving unit 7 and is passed through the photocoupler 8. It is adapted to be input to the monitor signal transmitting section 9. In the monitor signal sending unit 9, the signal is smoothed by the smoothing circuit made up of the capacitor C _{4 and} shaped by the waveform shaping circuit made up of the transistor Q _{1, and} is sent through the monitor signal output terminals TM ₁ and TM ₂ as shown in FIG. 6 (e).
A monitor signal V _m ′ as shown in is output. Here, the delay time of the monitor signal V _m ′ with respect to the monitor signal V _m is set to 100 ms or less. The transmission format of the load control signal V _c and the monitor signal V _m described above is
It is based on the JEM-A standard.

As shown in FIG. 1, the interface unit 3 is mounted on a standardized ready-made mounting frame 27 that can be mounted on an embedded box so that it can be embedded in a wall surface. A mounting portion for mounting to the mounting frame 27 is formed in the case 20 for housing the interface circuit. Air conditioner 2 on the front of case 20
A modular outlet 24 to which a modular plug 23 of the signal line 22 from is connected is provided. Further, on the back surface of the case 20, a first input / output terminal 26 to which a signal line 25 from the telephone control device 1 is connected, and a second input / output terminal to connect a signal line 30 from the air conditioner 2 through the inside of the wall surface. 28 and are provided. By providing the second input / output terminal 28 for connecting the signal line 30 from the air conditioner 2 which passes through the inside of the wall surface to the rear surface of the case 20 in this manner, as shown in FIG. Wiring can be performed inside the wall surface by using the signal line 30 that is pre-wired inside the wall surface, so that the wiring between the air conditioner 2 and the interface unit 3 is hidden and looks good. Moreover, the case 20 of the interface unit 3
Since the modular outlet 24 is provided on the front surface of the air conditioner, when the air conditioner 2 is installed later, the modular outlet 24 can be used for wiring with the air conditioner 2. Both input / output terminals 26 and 28 are screw terminals.
By the way, the reason why the second input / output terminal 28 of the interface unit 3 is not connected to the connector is that it is difficult to pass the signal line 30 through the wall surface if connectors are provided on both the signal lines 30. Therefore, a connector whose shape and dimensions are defined by the JEM-A standard is attached to the air conditioner 2 side of the signal line 30 and the signal line 30 is connected in the disconnected state on the interface unit 3 side. The signal line
When wiring 30 in the wall surface, the air conditioner 2 side is pulled out from a telephone line chip or the like.

[Effects of the Invention] As described above, the present invention connects the first input / output terminal to which the signal line from the telephone control device is connected to the rear surface of the case and the signal line that passes through the wall from the controlled load. Second
The input / output terminals of the controlled load are connected to the modular outlet to connect the modular plug of the signal line passing through the outside of the wall to the modular outlet, and the signal line passing from the controlled load inside the wall to the second input. Since the connection state to connect to the output terminal can be selected, the signal line from the controlled load is connected to the second input / output terminal through the inside of the wall surface so that the wiring with the controlled load is performed inside the wall surface. Therefore, there is an effect that the wiring between the controlled load and the interface unit is hidden and the appearance is good. Moreover, the front of the case is equipped with a modular outlet to which the modular plug of the signal line that passes through the outside of the wall from the control load is connected, so use this modular outlet when installing the controlled load later. Can be wired.

[Brief description of drawings]

1 (a) and 1 (b) are a front perspective view and a rear view showing a state in which an interface unit of an embodiment of the present invention is attached to a mounting frame, and FIG. 2 is a control system using the interface unit of the same. FIG. 3 is a schematic configuration diagram, FIG. 3 is a front view of the same telephone control device, FIG. 4 is a circuit diagram of an interface unit, FIG. 5 is a connection diagram of the same, FIG. 6 is an operation explanatory diagram of the same, and FIG. (a), (b) is explanatory drawing of the wiring state same as the above. 1 is a telephone control device, 2 is an air conditioner, 3 is an interface unit, 20 is a case, 22,25,30 are signal lines,
23 is a modular jack, 24 is a modular outlet, 26 is a first input / output terminal, and 28 is a second input / output terminal.

Claims (1)

[Scope of utility model registration request] 1. A control signal is fetched from a control side via a telephone line to remotely control the controlled load, and a monitor signal indicating an operating state of the controlled load is returned to the control side via the telephone line. It is used in a telephone control system that is connected to a telephone line and is provided between a controlled load and a controlled load, and a modular plug of a signal line that passes through the outside of the wall from the controlled load is connected to the front of the case. A modular outlet that is connected to the back of the case, the first input / output terminal to which the signal line from the telephone control device is connected, and the second signal line to which the signal line through the wall from the controlled load is connected. With input and output terminals,
A connection state in which a modular plug of a signal line that passes through the outside of the wall from the controlled load is connected to a modular outlet, and a connection state in which a signal line that passes through the inside of the wall from the controlled load is connected to a second input / output terminal An interface unit characterized by being selectable.