JPH08161002A - Control system for plural equipments and console panel for same system - Google Patents

Abstract

PURPOSE: To provide a control system which controls the equipments by one system controller and can normally feed electricity even if one of the equipments is powered OFF when the system controller is supplied with the electric power from the equipments. CONSTITUTION: The system controller 7 controls a water heater 1, a full-time bath keeping warmth unit(FTB) 3, and an air bubble generating machine 5 unitedly. The system controller 7 consists of a part 71 which communicates with the water heater 1 and a part 73 which functions principally. Power feed lines 39 and 59 are connected to the principal function part 73, which operates by being supplied with the electric power from the FTB 3 and air bubble generating machine 5. The FTB 3 and air bubble generating machine 5 have reverse current preventive diodes 37 and 57 on their power feed lines and never feed the electricity to each other. The parts 71 and 73 in the system controller 7 are electrically insulated from each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control system for controlling a plurality of devices by a single operation panel, and more particularly to the structure of a power supply circuit for supplying power from a plurality of devices to the operation panel.

[0002]

2. Description of the Related Art As an example of this type of control system, a plurality of bathroom-related equipment such as a water heater, a full-time bath warmer (hereinafter abbreviated as "FTB"), and a bubble generator are installed in the bathroom. The inventors and others are developing a bathroom integrated control system that is integratedly controlled by a single remote control panel (hereinafter referred to as "remote controller") installed (as far as the inventors and others know, The system is not known at the time of filing this application).

Since the conventional bathroom-related equipment is provided with a remote controller unique to each equipment, when a plurality of these equipments are installed in the bathroom, a plurality of remote controllers are installed in the bathroom, which is convenient. Also, it is not preferable in terms of appearance. Moreover, for example, a water heater and FT
B has a similar bath warming function, and FTB and a bubble generator both have similar bubble generating functions, so the functions may overlap between devices, and as a user In some cases, it may be difficult to select the function of the device. The above-mentioned bathroom integrated control system aims to solve these problems.

A single remote controller (hereinafter referred to as "system controller") used in this bathroom integrated control system is connected to a plurality of devices to be controlled, but power is supplied from any device. Whether to receive it is one of the problems in realizing this system.

That is, the conventional remote controller for an individual device is individually supplied with power from each device (note that the method of providing a dedicated power source for the remote controller such as a battery or an AC adapter is not suitable for life and workability. Because it is inferior in terms, it is not often adopted). However, there are many problems in applying this conventional method to the system controller as it is, and simply merging the power supply lines from all the devices and guiding them to the system controller for the reason described later. On the other hand, it is conceivable to select a representative device from a plurality of installed devices and supply power from the representative device, but this also has a problem as described later.

[0006]

As described above, in the bathroom integrated control system, there is a problem in which device should supply power to the system controller.

For example, if the power supply lines of all the devices are simply merged and led to the system controller, it is actually difficult to completely match the power supply voltages of all the devices. Therefore, the device with the highest power supply voltage is the system. As a result, power is supplied to not only the controller but also other devices, and the power supply circuit of the device is overloaded.

Further, the water heater has a frame sensor for electrically detecting the flame, but it is necessary to provide a ground line on the secondary side of the power supply circuit in view of the detection principle of the frame sensor. If, by any chance, the insulation of the remote controller of this water heater and the circulation pump for additional cooking is damaged, an electrical conduction path will be created between them through the water in the bathroom, and the power supply will be connected from this conduction path to the ground line. There is a possibility of creating a leakage loop to the primary side (commercial power supply), but when using the water heater alone as in the past, there is only a small power load inside the water heater, so this leakage loop The flowing current is extremely small and causes no substantial problem. However, if the power supply line of this water heater is simply merged with the power supply line of the FTB or the bubble generator and connected to the system controller, the FTB or the bubble generator needs a large amount of electric power such as an electric heater or a bubble jet pump. When there is a load, if the above insulation damage occurs, there is a possibility that a leakage loop will occur from the high power load of the FTB or bubble generator to the power supply primary side through the ground line. Can no longer be ignored.

Thus, in the bathroom integrated control system,
When the system includes a device having a ground line and a device having a large electric power load, there is a problem in a method of simply joining the power supply lines of the devices and guiding them to the system controller.

On the other hand, the method of selecting one of a plurality of devices as a representative device and supplying power to the system controller from there is a problem that the system controller does not operate when the representative device is powered off or fails.

Therefore, a first object of the present invention is to provide a control system for integrally controlling a plurality of devices by a single system controller, in order to supply power to the system controller from a plurality of devices, what kind of Even if the system is made up of a combination of
Further, even if any of these devices is powered off or fails, the system controller can always be supplied with power normally and the power supply capacity of each device is prevented from increasing as much as possible.

A second object of the present invention is to ground a secondary side of a power source such as a water heater in a system in which a single system controller of a plurality of devices related to a bathtub is used for integrated control. Even if a device with a line is included, even if the system controller and some load in the device are damaged and touch the water in the bathroom, leakage from the bathroom to the primary side of the power supply through the ground line The goal is to completely eliminate the possibility of looping.

[0013]

The first aspect of the present invention is as follows.
In a system that controls multiple devices with a single operation panel, each of the multiple devices has a power circuit that has a function of supplying power to the power circuit of the operation panel, and the power circuit of each device and the power circuit of the operation panel The power supply line connecting to and is provided with a backflow prevention means for preventing the output power from other devices from flowing into all or part of the load of each device.

According to a second aspect of the present invention, in a system for controlling a plurality of devices by a single operation panel, the plurality of devices include a first type device having a ground line and a first type device having no ground line. Two types of devices are included, and the operation panel has a first part that receives power from the first type device and a second part that receives power from the second type device. And the second portion are electrically insulated from each other.

According to a third aspect of the present invention, in a single operation panel capable of controlling a plurality of devices, a plurality of communication circuits for communicating with the plurality of devices, input information from a user and communication information of the communication circuits are provided. And a processing circuit for processing, each of the communication circuits receives power from a device of a communication partner, and the processing circuit receives power from at least one of the plurality of devices.

[0016]

In the control system according to the first aspect of the present invention,
Since it is possible to supply power to the operation panel, that is, the system controller from each of a plurality of devices, if the power supply lines of those devices are joined and connected to the system controller, if even one of them is in the power-on state, The system controller can operate even if other devices are powered off or have failed. In addition, the system controller can operate regardless of the types of devices included in the system.

Furthermore, when the power supply lines from a plurality of devices are merged and connected to the system controller, even if the power supply voltages of those devices are uneven, the reverse current blocking means reduces the voltage from the device with the higher voltage. Since power is prevented from flowing into the load of one device, it is sufficient for the power supply circuit of each device to have a power capacity that can supply power to the load of its own device and the system controller. It is not necessary to have a large capacity to supply power.

Here, the backflow prevention means is preferably provided at the position of each device side of the power supply line. This has the advantage of increasing the degree of freedom in the way of connecting and connecting each device to the system controller.

In the control system according to the second aspect of the present invention, a first part of the components of the system controller that receives power from a first type device having a ground line,
It is electrically insulated from a second portion that receives power from a second type device that does not have a ground line. for that reason,
Even if the type 2 device or the system controller is damaged, a leakage loop from the load in the type 2 device to the primary side of the power supply through the ground line of the type 1 device is not formed. Therefore, even if there is a large power consumption load in the second type device, if there is no large power consumption load in the first type device, there is no concern that leakage due to damage will be a problem. . This is particularly effective as a countermeasure against electric leakage when the FTB having a large power consumption load or the bubble generator is broken in the bathroom integrated control system including the hot water supply device, the FTB, the bubble generator, and the like.

Here, it is desirable that a circuit that controls the main function of the system controller, for example, a signal processing circuit, an operation unit, a display unit, etc. be included in the second portion. This allows
Most circuits in the system controller are isolated from the ground line, which further reduces the possibility of such leakage loops and further increases safety.

According to the system controller of the third aspect of the present invention, the processing circuit receives power from at least one device, and each of the communication circuits communicating with the plurality of devices comprises:
Power is supplied from the equipment of each communication partner. Therefore, at least one of the devices that power the processing circuit
The system controller 7 can operate as long as the stand is in the power-on state, and the communication circuit that communicates with the other device also becomes inactive when the power is off or other devices are faulty or not installed. Since it does not consume unnecessary power, there is an advantage that it can operate with the minimum power according to the state of the system.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a circuit diagram mainly showing the configuration of a power supply system of a bathroom integrated control system according to an embodiment of the present invention.

In this system, a water heater 1, an FTB (full-time bath warmer) 3 and a bubble generator 5 are installed, and these three devices 1, 3 and 5 are installed in a bathroom. The system controller 7 is controlled integrally.

The water heater 1 has a transformer 11 for converting AC 100 V from a commercial power source into an appropriate voltage, and a DC constant voltage VccK which is connected to the secondary side of the transformer 11 and stabilized.
A power supply circuit 13 for generating (for example, 12 volts) is provided. The output power of the power supply circuit 13 is supplied to various loads (not shown) in the water heater 1 and also to the system controller 7 through the connection line 19. One of the secondary side power supply lines output from the power supply circuit 13 is grounded. This is because the frame sensor in the water heater 1
This is because the presence of the frame is detected based on the presence / absence of electrical conduction between the detection terminal and the ground.

The water heater 1 further includes a system controller 7
And a communication circuit 15 for communicating a control signal with the control signal. The control signal is superimposed on the power supply voltage through the connection line 19 for communication. Therefore, the connection line 19 is a two-wire type. By the way, the reason why the two-wire system is adopted is that the water heater 1 needs to be connected not only to the system controller 7 in the bathroom but also to a plurality of controllers such as a remote controller in the kitchen. This is because it is desirable that the number of lines 19 is as small as possible. The superimposition separation circuit 17 is for superimposing the control signal to be transmitted on the power supply voltage and separating the received control signal from the power supply voltage.

The FTB 3 is a transformer 31 which converts 100 VAC from a commercial power source into an appropriate voltage, and a DC constant voltage VccF which is connected to the secondary side of the transformer 31 and stabilized.
A power supply circuit 33 for generating (for example, 12 V) is provided. The output power of the power supply circuit 33 is supplied to various loads (not shown) in the FTB 3 and also to the system controller 7 through the connection line 39. Unlike the case of the water heater, the power supply line output from the power supply circuit 33 is not grounded, but is insulated from the ground.

The FTB 3 further includes a system controller 7
A communication circuit 35 for communicating a control signal with the control signal is communicated through the communication line in the connection line 39. Therefore, the connection line 39 is a three-wire type. The reason why the 3-wire system is used is that it is not necessary to wire to multiple objects like a water heater, so the 3-wire system that does not require a signal superposition separation circuit or the like requires it. This is because it is more advantageous than the line type.

The bubble generator 5 also includes a transformer 51, a stabilized DC power supply circuit 53, and a communication circuit 55, like the FTB 3. The output voltage VccB of the power supply circuit 53 (for example, 12
The bolt) is supplied to a load (not shown) in the bubble generator 5, and the system controller 7 is connected through a connection line 59.
Is supplied to. The communication circuit 55 communicates with the system controller 7 through a dedicated communication line within the connection line 59.
Therefore, the connection line 59 is a three-wire type.

The connection line 39 of the FTB 3 and the connection line 59 of the bubble generator 5 are simply joined every three lines and connected to the system controller 7. Where FTB3
Backflow prevention diodes 37 and 57 are provided in the power supply line inside and in the bubble generator 5 so that electric power does not flow into the load inside the FTB 3 and the bubble generator 5 from the side of the joined connection lines 39 and 59. ing.

The system controller 7 is composed of two electrically insulated parts 71 and 73. One portion 73 is an operation unit 733 equipped with a touch panel and switches for the user to input, and a display unit 73 for visually displaying the system state and input information to the user.
5, a communication circuit 737 for communicating a control signal with the FTB 3 and the bubble generator 5, input information from the operation unit 733, output information to the display unit 735, communication circuit 737, and communication information of the communication circuit 711 described later. It includes a CPU 731 that operates, and a stabilized power supply circuit 739 that supplies power to these units 731 to 737. Here, the stabilized power supply circuit 739
Is supplied with DC power from the FTB 3 and the bubble generator 5 through the joined connection lines 39 and 59. Therefore, this portion 73 is operated by the power supply from the FTB 3 and the bubble generator 5.

Another portion 71 in the system controller 7 is a communication circuit 711 for communicating with the water heater 1.
And a stabilized power supply circuit 713 for supplying power to the communication circuit 711. The stabilized power supply circuit 713 is connected to the connection line 1
Power is supplied from the water heater 1 through 9. The connection line 19
Circuit 7 provided between the power supply circuit 713 and the stabilized power supply circuit 713
Reference numeral 15 is for always supplying power to the power supply circuit 713 with a constant voltage polarity regardless of the voltage polarity of the two wires of the connection line 19. The superposition separation circuit 717 is for superposing the control signal to be transmitted on the power supply voltage and separating the received control signal from the power supply voltage.

As described above, the portion 71 and the portion 73 are electrically insulated. Because of this insulation requirement, the communication circuit 711 in the portion 71 and the CPU 731 in the portion 73 are electrically insulated by the photocoupler 75 while being communicably coupled.

FIG. 2 shows the internal structure of the system controller 7 in more detail.

Inside the portion 73, as described above, there are the stabilized power supply circuit 739, the communication circuit 737, the CPU 731, the operating portion 733, the display portion 735 and the like. Stabilized power supply circuit 7
The 39 receives the DC voltage of 12 V from the FTB or the bubble generator through the 3-wire connecting line as described above,
It produces DC voltages of Volts, 12 Volts and 5 Volts. These DC voltages are transmitted to the communication circuit 737 and the CPU 73.
1, operation unit 733, display unit 735, and CPU 731
To the RAM 741, the ROM 743, the infrared light receiving element 745, and the like attached to the.

The operation unit 733 includes a touch panel, various switches, a display LED, and the like. The display unit 735 is composed of a liquid crystal display unit, a backlight unit behind it, and the like.

On the other hand, in the portion 71, as described above,
There are a rectifier circuit 715, a superposition separation circuit 717, a stabilized power supply circuit 713, a communication circuit 711, and the like. Stabilized power supply circuit 71
3 is 12 from the water heater through the 2-wire connection line as described above.
It receives a DC voltage of 5 V and produces a DC voltage of 5 V. This voltage is supplied to the communication circuit 711 and the oscillator circuit 719 dedicated to this communication circuit.

The photocoupler 75 is connected from the communication circuit 711 to C.
Photocoupler 751 for sending control signal to PU 731
And a photocoupler 753 for sending a control signal in the opposite direction. Then, because of the need for electrical insulation between the parts 71 and 73, the light emitting diode of the photocoupler 751 and the light receiving transistor of the photocoupler 753 connected to the communication circuit 711 are supplied with power from the power supply circuit 713 in the part 71. On the other hand, the light receiving transistor of the photocoupler 751 and the light emitting diode of the photocoupler 753 connected to the CPU 731 are supplied with power from the power supply circuit 739 in the portion 73.

As described above, among the components of the system controller 7, only the portion 71 related to communication with the water heater is supplied with power from the water heater 1, and the other portion, that is, the portion that controls the main function of the system controller 7. 73 is FTB
3 and the bubble generator 5 receive power. And part 7
Since 1 and the portion 73 are electrically insulated, the power feed line from the water heater 1 and the power feed lines from the FTB 3 and the bubble generator 5 are electrically insulated.

Under such a structure, if at least one of the FTB 3 and the bubble generator 5 is in the operation-on state, other equipment may be in the operation-off state or the failure state, or the equipment may be installed. If not, the system controller 7 is ready for operation. Therefore, the user can use the system even if only one of the FTB 3 or the bubble generator 5 is turned on, and the other devices are in the off state, and regarding the system configuration, the FTB 3 or the bubble generator 5 is also used. There is an advantage that if only one generator 5 is installed, other devices can be optionally installed or not.

Further, since the communication circuit 711 for the water heater 1 in the system controller 7 is adapted to be operated by the power supply from the water heater 1, when the water heater 1 is in the off state or is not installed, The communication circuit 711 is also deactivated,
It also has the advantage of not wasting power.

Further, a part 7 in the system controller 7
Since 1 and the portion 73 are insulated, the following merits are also obtained. That is, in the unlikely event that the FTB 3 or the high-power load in the bubble generator 5 (for example, the bubble jet pump in the FTB 3) is damaged and the system controller 7 is also damaged, they come into contact with the water in the bathroom. Even if a conductive path is formed from the large power load to the system controller 7 through the water in the bathroom, the conductive path is electrically insulated from the water heater 1, so that the conductive path is connected to the water heater 1 from the water heater 1.
No earth leakage loop is formed through the ground line to the primary side (commercial power source) of the power source, and there is no risk of leakage from a large power load, which is completely safe.

Incidentally, in the unlikely event that the load of a small electric power in the water heater 1 (for example, a circulation pump for additional cooking) and the system controller 7 are both damaged and come into contact with the water in the bathroom, When a conductive path from the power load to the system controller 7 through the water in the bathroom is formed, a leakage loop is formed from this conductive path to the primary side of the power source through the earth line of the water heater 1, but in this case, the leakage current is very small. So there is no real problem. In order to prevent the occurrence of such a situation as much as possible, the circuit board corresponding to the portion 71 of the system controller 7 is located at the innermost position of the system controller 7 and the case of the controller 7 is damaged. Even so, it is desirable to place it in a position where there is the least possibility of contact with bathroom water.

Further, since the parts 71 and 73 are insulated, as a secondary merit, noise such as lightning surge does not sneak from one device to another device between the devices insulated from each other. Therefore, it is possible to suppress the influence of this wraparound noise on the system.

Furthermore, since the backflow prevention diodes 37 and 57 are provided in the power supply lines of the FTB 3 and the bubble generator 5, respectively, even when the output voltages of the FTB 3 and the bubble generator 5 do not completely match, the output voltage is high. The other device only needs to supply power to its own load and the system controller 7, and it is not necessary to supply power to the load of the device having a smaller output voltage. This will be described with reference to FIG.

In FIG. 3, assuming that the maximum power consumption of the loads RF, RB, R of the FTB3, the bubble generator 5 and the system controller 7 is 12 watts, the output voltage VccF of the FTB3 and the bubbles are as shown in FIG. 3A. If the output voltage VccB of the generator 5 is completely equal, the FTB 3 and the bubble generator 5 need to equally share the maximum power consumption of 18 watts.

However, as shown in FIG. 3B, if the output voltage VccF of the FTB3 is higher than the output voltage VccB of the bubble generator 5 without the backflow prevention diode, the FTB3 consumes all the loads. The maximum power of 36 watts is taken care of, and the power taken by the bubble generator 5 is 0 watts.

On the other hand, as shown in FIG. 3C, if the backflow prevention diode is provided, even if the output voltage VccF of FTB3 is higher than the output voltage VccB of bubble generator 5, FTB3 is generated.
Means that the load generator RF and the load R of the system controller 7 need to handle only the maximum power consumption of 24 watts, and the bubble generator 5 must handle at least the maximum load power consumption of its own load RB of 12 watts. Become.

As described above, due to the presence of the backflow prevention diode, the power supply circuits 33 and 35 of the FTB 3 and the bubble generator 5 are provided.
It is sufficient for each of them to have a power capacity necessary for power supply to the load of its own machine and the load (part 73) of the system controller 7, and it is necessary to have a large power capacity capable of supplying power to other devices. Disappears.

Furthermore, the backflow prevention diodes 37 and 57 are provided.
Is provided inside each device, there is also an advantage that the degree of freedom in connecting the connection lines 39 and 59 is increased. This will be described with reference to FIG.

As shown in FIG. 4A, when the backflow prevention diodes 37 and 57 are provided inside the FTB 3 and the bubble generator 5, as shown in the connection example on the left side of FIG.
The connection lines 39 and 59 of the air bubble generator 5 and the air bubble generator 5 may be simply merged and connected to one connection terminal 77 of the system controller 7. Alternatively, as in the connection example on the right side, the FTB 3, the air bubble generator 5, and the system controller are connected. 7 and 7 may be connected to each other by connecting lines 59 and 39.

On the other hand, as shown in FIG. 4B, when the backflow prevention diodes 37 and 57 are provided in the system controller 7, as shown in the connection example on the left side of FIG.
And the bubble generator 5 must be connected to different connection terminals 77 and 79 of the system controller 7 by connection lines 39 and 59, and a plurality of connection terminals of the system controller 7 are required. Further, it is impossible to connect the beads like the connection example on the right side of FIG.

FIG. 5 is a diagram showing in more detail the structure for preventing the inflow of electric power into the FTB 3 and the bubble generator 5 in this embodiment.

As shown in FIG.
In addition to the DC power supply circuit 33 and the communication circuit 35 shown in FIG. 1, a primary load 21 that is directly supplied with power from a commercial power supply, a secondary load 23 that is supplied with power from the DC power supply 33, and a secondary load 23.
There is a control processing circuit 25 and the like for controlling the communication of the communication information and processing the communication information of the communication circuit 35.

Further, the light emitting diode 351 for reception and the driver transistor 3 for transmission are attached to the communication circuit 35.
53 is provided. Reception light emitting diode 351
Is provided between the power supply line 391 and the signal line 393 in the three-wire connection line 39, and emits light in response to a signal on the signal line 393 to be received by a light receiving element (not shown) in the communication circuit 35. It is designed to pass signals. The driver transistor 353 has a collector-emitter connected between the signal line 393 in the connection line 39 and the reference potential line 395, and is turned on and off by the communication circuit 35 to drive the signal line 393 to transmit a signal. It has become.

The secondary load 23 and the control processing circuit 2
5, the communication circuit 35, the light emitting diode 351 for reception, and the driver transistor 353 for transmission are all supplied with power from the DC power supply circuit 33. Then, the backflow prevention diode 37 is provided in any of the positions (1) to (3) in the drawing (that is, on the downstream side of the secondary load 23) in the power supply line.

Although not shown, the bubble generator 5 has the same structure as that of the FTB 3 described above.

In the portion 73 of the system controller 7, as already described, the communication circuit 737 for communicating with the FTB 3 and the bubble generator 5, the CPU 731 for processing communication signals and input / output signals, various loads (operation section 733, Display unit 73
5 etc.) and a stabilized power supply circuit 739 for supplying these. The power supply circuit 739 is connected to the power supply line 391 in the connection line 39 so as to receive power from the FTB 3 and the bubble generator 5. The output line 745 of the power supply circuit 739 is connected to the communication circuit 737, the CPU 731, and various loads.

A light emitting diode 741 for reception and a driver transistor 743 for transmission are attached to the communication circuit 737.
Is provided. The reception light emitting diode 741 is provided between the output line 745 of the power supply circuit 739 and the signal line 393 in the connection line 39, and emits light in response to a signal on the signal line 393, so that the reception light emitting diode 741 in the communication circuit 737 is provided. The received signal is passed to a light receiving element (not shown). The driver transistor 743 has a collector-emitter connected between the signal line 393 in the connection line 39 and the reference potential line 395, and is turned on / off by the communication circuit 737 to drive the signal line 393 to transmit a signal. It has become.

In the above configuration, if the power supply voltage of the bubble generator 5 is higher than the power supply voltage of the FTB3, the output current of the bubble generator 5 is at least 2% within the FTB3 by the action of the backflow prevention diode 37. It will not be supplied to the secondary load 23. In this case, if the backflow prevention diode 37 is in the position, the output power of the bubble generator 5 is never consumed by the FTB 3. On the other hand, in any of the positions 1 to 3, power consumption occurs in the circuit downstream of the position, but the power consumption is 2
Compared with the power consumption of the secondary load 23, it is significantly smaller, so there is no substantial problem. Since the power supply line 391 and the signal line 393 in the connection line 39 are coupled by the light emitting diodes 351 and 741, the power on the power supply line 391 does not enter the communication line 393, and the communication line 393 is not provided. The power of the bubble generator 5 is not supplied to the FTB 3 through the.

FIG. 6 shows another embodiment of the present invention.

In this embodiment, the FTB 603 and the bubble generator 605 are connected to the system controller 607 by the two-wire connection lines 611 and 613, and the water heater 601 is connected by the three-wire connection line 609 to the system controller 60.
Connected to 7.

As in the above-described embodiment, the hot water supply device 601 has two
Since the secondary supply line has a ground line (not shown), the system controller 607 has a ground line to eliminate the possibility of forming a leakage loop from the FTB 603 or the bubble generator 605 to the power supply primary side through the ground line. , Part 615 that receives power from the water heater 601 and the FT
Part 6 receiving power from B603 and bubble generator 605
17, and the two parts 615 and 617 are electrically insulated.

Since the FTB 603 employs the two-wire type connection line 611, the FTB 603 is provided with a superposition separation circuit 621 for superposing and separating the power supply power and the communication signal. And
The backflow prevention diode 631 is provided at a position immediately before the superposition separation circuit 621 of the power supply line 633 from the power supply circuit 629. The bubble generator 605 has the same configuration. The water heater 601 does not include a superposition separation circuit because it uses a three-wire connection line.

In accordance with this, the system controller 60
Portion 617 of No. 7 comprises an overlap separation circuit 635 similar to that described above, while portion 615 does not comprise an overlap separation circuit.

The other structure is substantially the same as that of the previous embodiment.

Also in this embodiment, the same merits as in the previous embodiment can be obtained.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and can be carried out in various other modes without departing from the scope of the invention. it can. For example, in the above embodiment, the water heater, F
The present invention relates to a bathroom integrated control system including a TB and a bubble generator, but the present invention can also be applied to a bathroom integrated control system having a device configuration different from this and various multiple device control systems unrelated to the bathroom. it can.

[0068]

According to the first aspect of the present invention, if at least one of the devices in the system is in the operation-on state,
It is possible to supply power to the system controller irrespective of the states of other devices, and the power capacity of the power supply circuit of each device is sufficient to supply power to its own load and the system controller, and no further capacity is required.

According to the second aspect of the present invention, as long as a device having a ground line does not have a large power load, even if other devices have a large power load, the large power load Even if damage occurs, there is no possibility of a leakage loop from the damaged load to the primary side of the power source through the ground line, so that there is no problem due to leakage current.

According to the third aspect of the present invention, when there is a device in the system that is turned off, has a fault, or is not installed, the communication circuit in the system controller for that device becomes inoperative, resulting in unnecessary power consumption. Does not consume.

[Brief description of drawings]

FIG. 1 is a circuit diagram mainly showing the configuration of a power supply system of a bathroom integrated control system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a system controller of the embodiment.

FIG. 3 is a circuit diagram illustrating an effect of a backflow prevention diode in the same embodiment.

FIG. 4 is a circuit diagram illustrating a high degree of freedom of wiring in the embodiment.

FIG. 5 is a circuit diagram showing in detail the configuration for preventing the inflow of electric power to the FTB and the bubble generator in the same embodiment.

FIG. 6 is a circuit diagram showing the configuration of another embodiment of the present invention.

[Explanation of symbols]

 1 Water heater 3 FTB 5 Bubble generator 7 System controller 13, 33, 53 Power supply circuit on equipment side 15, 35, 55 Communication circuit on equipment side 19, 39, 59 Connection line 37, 57 Backflow prevention diode 711, 737 System controller Side communication circuit 713, 739 System controller side power supply circuit 731 CPU

Claims (7)

[Claims] 1. A system for controlling a plurality of devices by a single operation panel, wherein each of the plurality of devices has a power circuit having a function of supplying power to a power circuit of the operation panel, The power supply line connecting the power supply circuit and the power supply circuit of the operation panel is provided with a backflow prevention means for preventing the output power from other devices from flowing into all or part of the loads in each device. A control system for a plurality of devices. 2. The system according to claim 1, wherein the backflow prevention means is provided at a position on the device side of the power supply line. 3. A device which can be controlled together with other devices by a single operation panel, wherein a power circuit having a function of supplying power to the operation panel and a power supply line connecting the power circuit and the operation panel to the device A backflow blocking means for blocking the inflow of electric power into all or part of the load. 4. A system for controlling a plurality of devices by a single operation panel, wherein the plurality of devices include a first type device having a ground line and a second type device having no ground line. The operation panel may include a first power supply that receives power from the first type device.
And a second portion that receives power from the second type device, and the first portion and the second portion are electrically insulated from each other. Control system for multiple devices. 5. A single operation panel capable of controlling a plurality of devices, wherein a first portion having a ground line for supplying power from a first type device and a power supply for supplying a second type device isolated from ground. And a second portion for receiving the first portion, and the first portion and the second portion are electrically insulated from each other. 6. The operation panel according to claim 5, wherein the first portion includes a first communication circuit for communicating with the first type device, and the second portion includes the second portion. Second communication circuit for communicating with a device of a kind, an operation unit for a user to input, a display unit for providing information to the user, input information from the operation unit, the first and second And a processing circuit for processing communication information of the communication circuit and output information to the display unit. 7. A single operation panel capable of controlling a plurality of devices, a plurality of communication circuits for communicating with the plurality of devices, and a processing circuit for processing input information from a user and communication information of the communication circuit. And each of the communication circuits receives power from a device of a communication partner,
The operation panel receives power from at least one of the plurality of devices.