JPH0486095A - Power supply and signal transmission system - Google Patents

Abstract

PURPOSE:To realize bidirectional communication between a steam sauna main body and a remote controller via a power supply cable by superimposing and inserting a second communication signal to a part outside between both edges to which a power is supplied from the power supply cable. CONSTITUTION:At a hot water supply device 2 side and the remote controller 2a, 2b sides, a signal until edge input Er is detected by the rise of a power Sa after edge Ed input is detected by the fall of the power Sa less than a threshold level L is handled as a first communication signal. At the steam sauna main body 6 and the remote controller 6a side, no response is issued in the detection of the edge Ed at that time, and also, the second communication signals Sd, Se when the edges Er is detected and inputted after the rise of the power Sa are handled as the signals between the steam sauna main body 6 and the remote controller 6a. Thereby, even when a hot water supply device as first equipment with specification different from that of the steam sauna is connected to the sauna with the same power supply cable, the bidirectional communication can be realized between them via the power supply cable 4.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention has a main body and a remote controller, and the two are interconnected by a power supply cable, and the main body and the remote control are connected to each other by a power supply cable. The present invention relates to a power supply/signal transmission system that supplies power to a remote controller in one direction, and can transmit communication signals in both directions between the main body and the remote controller by using a power supply cable as a communication cable.

(Prior art) In such a power supply/signal transmission system, the power supply cable can also be used as a signal communication cable, so there is no need to install a separate communication cable. It is often used because it has the advantage of simplifying the wiring by omitting it.

An example of such a system is to separate a water heater device into its main body and remote control, connect the main body and remote control to each other with a power supply cable, and supply power from the main body to the remote control via the power supply cable. While supplying power in one direction, the power supply cable is used as a communication cable between the main unit and the remote control to transmit communication signals related to various controls and data related to hot water supply in both directions. be.

FIG. 3 is a simple block circuit diagram of such a water heater device, and FIG. 4 is a diagram showing power and communication signals.

In the water heater device shown in FIG. 1, reference numeral 2 denotes a main body of the water heater, and 2a and 2b refer to remote controllers installed at each location to operate and control the water heater main body 2 from a plurality of locations apart from the water heater main body 2. (For convenience of explanation, the number is reduced to two.)

The water heater main body 2 and the remote controllers 2a, 2b are connected to each other by a power supply cable 4, and the water heater main body 2 is configured to unidirectionally transmit DC power Sa to the remote controllers 2a, 2b. In addition, the water heater main body 2 and the remote control 2a
, 2b are capable of bidirectionally transmitting communication signals sb and sC to each other via the power supply cable 4.

The communication signal sb transmitted from the water heater body 2 to the remote controllers 2a and 2b includes, for example, various lamps installed on the panel surface of the remote controllers 2a and 2b (a lamp that lights up at the start of operation, a lamp that lights up when the hot water temperature reaches a set value, etc.). There are signals that control the turning on or off of appropriate lamps, such as lamps that are turned on at times.

The communication signal Sc transmitted from the remote controllers 2a, 2b to the water heater main body 2 includes, for example, a setting signal for the hot water temperature.

The above-mentioned supply of electric power Sa and transmission of communication signals Sb and Sc will be explained with reference to FIG. The electric power Sa is supplied by forming a falling edge Ed and a rising edge Er.

The water heater main body 2 time-divisionally inserts a communication signal Sb from the water heater main body 2 side, for example, a signal indicating that the operation has started, between the two sides Ed and Er, and the electric power S
A and the communication signal sb are transmitted to the remote controllers 2a and 2b. The remote controllers 2a and 2b are supplied with electric power Sa from the water heater main body 2, and when they detect the falling edge Ed of the electric power Sa, they receive the communication signal sb after the detection, and perform the required communication signal sb corresponding to the communication signal sb. For example, turning on the start lamp.

When transmitting the communication signal Sc to the water heater main body 2, the remote controllers 2a and 2b also transmit the communication signal Sc between the edges Ed and Er after the hot water supply signal sb from the water heater main body 2, as described above. is inserted and transmitted in a time-division manner. The water heater main body 2 receives the signal Sc from the remote controllers 2a and 2b until the electric power Sa starts up, and performs the required operation corresponding to the signal Sc.

(Problems to be Solved by the Invention) Incidentally, the same house in which such a water heater device is installed is sometimes equipped with, for example, a steam sauna bath or a noyawar device. In this case, for example, a steam sauna bath or a shower device, like a water heater device, consists of its main body and a remote control.
When transmitting communication signals related to steam sauna baths, shower equipment, etc. on a time-sharing basis using the power in the power supply cable, conventional power supply cables for the water heater, steam sauna bath, and shower equipment are separate from each other. was equipped with wiring.

Separate wiring in this way allows the above-mentioned communication signals between the falling and rising edge of the power to be differentiated between the main unit and the remote control side of each device of different models, so that the same power can be supplied. Of course, it is technically possible to simplify the wiring by transmitting data within the cable, but the communication signals between the main unit and the remote control are not connected to the water heater or steam sauna bath/shower. Since it is necessary to identify whether it is from the equipment side, a dedicated circuit that supports this identification is required separately, and it was also necessary to avoid shortcomings such as easy malfunctions if the accuracy of the circuit is low. .

However, laying and wiring separate power supply cables within the same house has the disadvantage of complicating the installation and wiring work and increasing wiring costs. This makes it possible to supply power between the main unit and the remote controller of different models and also to communicate between the corresponding models, thereby solving problems in the installation and wiring work. It has been desired to be able to transmit data simply and with high accuracy without having to provide the same.

Therefore, in the present invention, it is possible to simultaneously supply power and transmit communication signals between the main unit and the remote controller of different models using the same power supply cable, thereby simplifying the installation and wiring work of the power supply cable. In this case, the purpose is to enable signal transmission between the main body side and the remote control side of the device to be performed simply and with high accuracy without complicating the circuit.

(Means for solving the problem) In order to achieve such an objective, the power supply and
The signal transmission system has a first device, and the first device is composed of a main body and a corresponding remote control,
The main body and the remote control are connected to each other by a power supply cable, and the main body supplies power to the remote control in one direction via the power supply cable, and has a rising edge and a falling edge. A first communication signal is time-divisionally inserted between the edges, and the first communication signal enables two-way communication between the main unit and the remote control in the first device, and the second The second device is configured with a main body and a remote control, and the second device is connected to the power supply cable, and the power supplied from the power supply cable is controlled between the two edges. Then, a second communication signal is superimposed and inserted,
The device is characterized in that the second communication signal enables two-way communication between the main body of the second device and the remote control.

(Function) A second device is connected to a power supply cable that connects the main body of the first device and the remote controller, and a second communication terminal is connected to a location outside between both edges of the power supplied from the power supply cable. By superimposing and inserting the signal and using the second communication signal, two-way communication between the main unit and the remote control in the second device is enabled, so different models can be connected using the same power supply cable. Even if you connect the water heater as the first device and the steam sauna bath as the second device, the power supply cable between the main body of the steam sauna bath and the remote control can be used in both directions. Communication becomes possible.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a simple circuit block diagram of a power supply/signal transmission system according to an embodiment of the present invention, and FIG. 2 is a diagram for explaining the transmission of power and each signal in the system shown in FIG. In the figure, parts corresponding to those in FIGS. 3 and 4 according to the conventional example are given the same reference numerals.

In the system in this embodiment, a water heater device is used as the first device, and a steam sauna bath is used as the second device.

The water heater device as the first device is composed of a water heater main body 2 and remote controllers 2a and 2b corresponding to the water heater main body 2. Water heater main body 2 and each remote control 2a.

2b are mutually connected to each other by a power supply cable 4. Power Sa having a form having rising and falling edges Ed and Er is supplied from the main body 2 to each remote controller 2a, 2b in one direction via a power supply cable 4. Bidirectional first communication signals sb and sC between the water heater main body 2 and the remote controllers 2a and 2b are inserted between the edges Ed and Er in a time-sharing manner. sb is a signal sent from the water heater main body 2 to the remote controllers 2a, 2b, and Sc is a signal sent from the remote controllers 2a, 2b to the water heater main body 2.

The first communication signals Sb and Sc enable bidirectional communication between the main body 2 and the remote controllers 2a and 2b in the feeder apparatus.

The above configuration is similar to the conventional system.

The stem of this embodiment is characterized by having the following configuration.

That is, in addition to the above configuration, the system of this embodiment has a steam sauna bath as a second device, and this steam sauna bath is composed of a steam sauna bath main body 6 and a corresponding remote control 6a. The steam sauna bath main body 6 and the remote control 6a are respectively connected to the power supply cable 4, and second communication signals Sd and Se are applied outside the edges of the electric power supplied from the power supply cable 4 between Ed and Er. Two-way communication between the main body 6 and the remote control 6a in the steam sauna bath is enabled by superimposing the second communication signals Sd and Se.

To explain the above configuration in more detail, among the second communication signals Sd and Se, Sd is a signal transmitted from the steam sauna bath main body 6 to the remote control 6a, and Se is a signal transmitted from the remote control 6a to the steam sauna bath main body 6. This is the signal to be used. The communication signals Sd and Se are inserted by modulating the frequency of about 100 kHz in accordance with the transmission data using the same method as the color burst of a color television signal at the power Sa.

The first communication signal between the water heater body 2 and the remote controllers 2a and 2b and the second communication signal between the steam sauna bath body 6 and the remote controller 6a are distinguished as follows.

That is, on the water heater main body 2 side and the remote control 2a, 2b side, the electric power Sa falls below the threshold level L and the edge Ed input is detected, and after that detection,
While the signal from when the electric power Sa rises until the edge Er is input and detected is treated as the first communication signal, the steam sauna bath main body 6 and the remote control 6a side do not respond to the edge Ed detection at that point, and when the electric power Sa When the edge Er is detected and input after the steam sauna bath has started up, the second communication signals Sd and Se are treated as signals between the steam sauna bath main body 6 and the remote control 6a.

Therefore, in the system of this embodiment, even if a water heater of different models as the first device and a steam sauna bath as the second device are connected with the same power supply cable 4, the steam sauna bath Bidirectional communication is possible between the main body 6 and the remote control 6a via the power supply cable 4.

In the above-described embodiment, the second device was applied to a steam sauna bath, but it goes without saying that the second device may be applied to a shower device or other devices.

(Effects of the Invention) As is clear from the above explanation, according to the present invention,
By making it possible to simultaneously supply power and transmit communication signals between the main unit and the remote controller of different models using the same power supply cable, it is possible to simplify the installation and wiring work of the power supply cable. It is possible to easily and accurately transmit signals between the main body side of the device and the remote control side without complicating the circuit.

[Brief explanation of the drawing]

1 and 2 relate to an embodiment of the present invention, FIG. 1 is a simple circuit block diagram of a power supply/signal transmission system according to the same embodiment, and FIG. 2 shows power supply and signal transmission system in the system. FIG. 3 and 4 relate to the conventional example, FIG. 3 is a simple circuit block diagram of the power supply/signal transmission system according to the conventional example, and FIG. 4 shows the power supply and signal transmission in the system. FIG. 2...Water heater body, 2a, 2b...Remote control, 4
...Power supply cable, 6 Steam sauna bath body 6.6a...Remote control.

Claims (1)

[Claims] (1) It has a first device, and the first device is composed of a main body (2) and a corresponding remote control (2a, 2b), and the main body (2) and the remote control (2a, 2b) are connected to each other with a power supply cable (4), and the power supply cable (4) is connected from the main body (2) to the remote control (2a, 2b).
), a power having a form of rising and falling edges is supplied in one direction, and a first communication signal is time-divisionally inserted between both edges, and the first communication signal is used to The main unit (2) and remote control (
2a, 2b), which is a power supply/signal transmission system that enables two-way communication between the main unit (6) and the remote control (6a). At the same time, the second device is connected to the power supply cable (4), and a second communication signal is superimposed and inserted outside between both edges of the power supplied from the power supply cable (4). A power supply/signal transmission system characterized in that the second communication signal enables two-way communication between the main body (6) and the remote control (6a) in the second device.