JPH1168886A - Controlling communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the procedure of communication by a main body side control section and a communication terminal to the utmost. SOLUTION: The communication equipment is provided with a main body side control section NTH controlling the operation of an equipment main body section NT, and the main body side control section NTH communicates operating information of the equipment main body section NT to a communication terminal CT through an electric wiring cable K. In this case, the communication equipment is provided with a short-circuit detection means SS that detects whether or not a short-circuit fault takes place in the electric wiring cable K and a communication changeover means CS that selects a communication state between the main body side control section NTH and the communication terminal CT into a communication enable state or a communication disable state, and the main body side control section NTH applies switching control to the communication changeover means CS so as to make communication with the communication terminal CT when the short-circuit detection means SS detects a short-circuit failure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a main body side control section for controlling the operation of an apparatus main body section. The main body side control section transmits operation information of the apparatus main body section to a communication terminal and an electric wiring cable. The present invention relates to a control communication device configured to communicate.

[0002]

2. Description of the Related Art In such a communication device for control, a main body side control section and a communication terminal are connected by an electric wiring cable, and operation information of the apparatus main body section controlled by the main body side control section is communicated between them. . Conventionally, communication between the main body side control unit and the communication terminal has been maintained in a communicable state while the apparatus main body unit is operating.

[0003]

However, since the main body side control unit and the communication terminal are connected by the electric wiring cable, the use of the device may be extremely long, or the electric wiring cable may not be used. When a large external force is continuously applied to the cable, a short circuit fault may occur in the electric wiring cable, and the communication between the main body side control unit and the communication terminal may become unstable. In such a case, in the above-described conventional configuration, for example, it is determined whether or not information transmitted from a communication partner is originally intended information, and if the information is not appropriate information, the information is ignored. Such a countermeasure is required, and the procedure for communication becomes complicated. The present invention has been made in view of the above circumstances, and has as its object to simplify the procedure of communication between a main body side control unit and a communication terminal as much as possible.

[0004]

According to the first aspect of the present invention, when a short-circuit fault occurs in an electric wiring cable connecting the main body side control unit and the communication terminal, the short-circuit detecting means detects the short-circuit fault. To detect. When the short-circuit detecting means detects the short-circuit fault, the main body side control unit controls the communication switching means so as not to perform the communication of the operation information of the apparatus main body with the communication terminal. Therefore, it is possible to prevent the communication between the main body side control unit and the communication terminal from becoming unstable due to the short circuit failure, thereby simplifying the processing when the short circuit failure occurs in the electric wiring cable, and controlling the main body side control. The procedure for communication between the department and the communication terminal can be simplified as much as possible.

[0005] With the above configuration, the main body-side control unit communicates with the plurality of communication terminals via a plurality of electric wiring cables provided corresponding to each communication terminal. Communicates the operation information of the main unit. When a short-circuit fault occurs in any of these electric wiring cables, the short-circuit detecting means specifies which of the plurality of communication terminals corresponds to the electric wiring cable, and then detects a short-circuit fault in the electric wiring cable. Is detected. The main body side control unit controls the communication switching unit so as not to communicate with the communication terminal corresponding to the electric wiring cable for which the short circuit detecting unit has detected the short circuit failure. Therefore, when the short-circuit detecting means detects a short-circuit failure in any of the electric wiring cables, there is no problem in continuing the communication as compared with a configuration in which communication with all communication terminals is stopped uniformly. By maintaining a state in which communication with a communication terminal without a communication terminal is possible, the procedure of communication between the main body side control unit and the communication terminal can be simplified as much as possible, while the operation of the control communication device is completely stopped. Can be avoided as much as possible.

In addition, with the configuration according to the third aspect, a power supply line for supplying operating power to the communication terminal is provided to the electric wiring cable connecting the main body side control unit and each of the plurality of communication terminals. The communication terminal operates by receiving power supply from the outside. In this case, the state of power supply to each communication terminal can be switched between supply and non-supply by the power supply switching means, and the main body side control unit controls switching of the power supply switching means to provide short-circuit detection means In such a manner that the power for operation is not supplied to the communication terminal corresponding to the electric wiring cable for which the short-circuit failure has been detected. That is, if a short-circuit fault is detected and power is supplied to a communication terminal in a state where communication with the main unit-side control unit cannot be performed, power loss occurs, or if a short-circuit fault occurs in the power supply line itself. Since an overload is applied to the power supply side, it is possible to prevent power loss or protect the power supply side by not supplying power as described above.

[0007] With the configuration of the fourth aspect, no communication is performed with the communication terminal corresponding to the electric wiring cable in which the short-circuit detecting means has detected the short-circuit failure, and no power is supplied. However, a short-circuit check process for temporarily supplying operating power to such a communication terminal to check whether or not a short-circuit fault has occurred, that is, whether or not the short-circuit fault continues, is repeatedly executed at set time intervals. . That is, if the supply of power for the temporary operation is not a problem from the viewpoint of prevention of power loss and overload, there is no particular problem. In the case where the failure detection is an erroneous detection due to some cause, it is possible to accurately detect the recovery from the short-circuit failure. Therefore, when the recovery from the short-circuit failure is detected, the supply of the operating power and the communication to the electric wiring cable in which the short-circuit failure is detected are restarted. Accordingly, recovery from a short-circuit failure can be performed quickly and accurately.

The communication terminal is a remote control device for manually inputting a control command to the control unit on the main body side. If left unattended, the main unit side control unit may receive a control command that should not be input from the remote control device, and it is necessary for the main unit control unit side to perform processing such as ignoring the control command However, by not performing communication with the remote operation device when a short-circuit failure occurs, the above-described processing when a short-circuit failure occurs can be simplified.

In addition, with the configuration of the sixth aspect, the apparatus body heats and supplies the liquid to be heated, and the liquid to be heated is supplied to the terminal for heating and supplied to the heating terminal. Is done. The communication terminal is a control unit of the heating terminal, and communicates operation information of the device main body with the main body side control unit. The operation information of the device main body in this case also includes information indicating the operation status of the heating terminal as information for the operation of the device main body. If a short circuit fault occurs in the electrical wiring cable connecting the main unit side control unit and the control unit of the heating terminal, communication between the two may become unstable. By not performing communication with the unit, the processing when communication becomes unstable can be simplified. In addition, the above-mentioned terminal for heating,
In many cases, a plurality of devices are provided for the device main body. In this case, it is particularly effective to stop communication with the control unit of the heating terminal corresponding to the electrical wiring cable in which the short-circuit fault has occurred.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a control communication device according to the present invention applied to communication in a hot water supply / room heating system. As shown in FIG. 1, the hot water supply / room heating system includes a heat source unit NT for heating and supplying hot water as a liquid to be heated, and a heating target unit circulated and supplied from the heat medium supply unit 21 of the heat source unit NT. Is provided with two heating terminals TA, each of which is a heat source, and is configured to supply hot water from the hot water supply unit 20 of the heat source device NT to the bathtub 19 in the bathroom. A bathroom drying / heating machine A and a floor heating apparatus B are provided as the plurality of heating terminals TA. The heat source unit NT as the device main unit MU has a main unit control unit NT _H for controlling the operation thereof.
When, the remote operation device for manually inputting a control command with respect to the main body control unit NT _H NT _S and is provided, on each of the heating terminal TA has a control unit for controlling their operation A _H , B _H , and remote control units A _S , B _S for manually inputting control commands to the respective control units A _H , B _H are provided.

The bathroom drying / heating machine A is provided in the bathroom to heat, dry or ventilate the bathroom, and is connected to the undressing room adjacent to the bathroom by an air supply duct and an air intake duct (not shown) to form the undressing room. It is configured to provide heating and ventilation. The floor heating device B is provided, for example, in a living room or the like, and a floor heating heat exchanger 62 composed of a slender pipe for heating is provided in a meandering manner on a mat-like rug to heat the room from the floor surface. Have been.

Next, the configuration of the heat source unit NT will be described.
The heat source unit NT includes a hot water supply unit 20 for supplying hot water to the hot water tap or the bathtub 19 as described above, and the heating terminals TA.
And a heat medium supply unit 21 for supplying hot water to the hot water. As shown in FIG. 2, the hot water supply unit 20 includes a gas combustion type hot water supply burner 23 for heating water supplied from the outside in a hot water supply combustion chamber 22, and a hot water supply burner 23.
Hot water heat exchanger 24, hot water supply burner 2
3 is provided with a fan 25 for ventilating the combustion air, and a hot water supply heat exchanger 24 is provided with a water supply passage 26 for supplying water from outside (such as a water supply) and a hot water supply for discharging hot water after heating. The road 27 is connected. In addition, the water supply channel 26 and the hot water channel 2
7 is provided in a state of branching off from the water supply passage 26, and a bypass valve 29 is provided in the bypass passage 28.

In the water supply passage 26, an incoming water temperature thermistor 30 for detecting an incoming water temperature, and a water amount sensor 3 for detecting an amount of flowing water.
1, a hot water supply outlet temperature thermistor 32 for detecting the outlet temperature of the heat exchanger 24 is provided in the hot water supply path 27,
A hot water temperature thermistor 34 is provided in the hot water supply path 33 on the lower side in the flow direction at the connection point between the hot water path 27 and the bypass path 28. A bath hot water supply passage 33b is provided so as to be branched from the hot water supply passage 33 to a general hot water supply passage 33a. The bath hot water supply passage 33b includes a bath valve 34, a backflow prevention hopper 35, a check valve 36, and the like. Recirculation circuit 3
7 is connected. The reheating circulation path 37 includes a reheating circulation pump 38, a water level sensor 39 for detecting the water level of the bathtub 19, a water flow switch 40 for detecting a flow state by the operation of the reheating circulation pump 38, and detecting a bathtub water temperature. A bath thermistor 41 is provided.

Fuel supply passage 42 for hot water supply burner 23
Has two intermittent valves 43, 44 for intermittent fuel supply,
Gas proportional valve 4 for hot water supply with adjustable fuel supply amount (gas amount)
Although not shown, an igniter for igniting the burner and a frame rod for confirming the ignition are provided near the burner 23 although not shown. In this way, the water supplied through the water supply passage 26 is heated by the hot water supply heat exchanger 24 heated by the burner 23,
Hot water is supplied to the hot water tap through 3a, and the hot water supply path 33
It is configured to supply hot water to the bathtub 19 through the b and the additional heating circulation path 37.

As shown in FIG. 2, the heating medium supply unit 21 includes a gas combustion type heating burner 47 and a heating burner 47 in a heating combustion chamber 46, similarly to the hot water supply combustion chamber 22. A heating heat exchanger 48 heated by the heater, a fan 49 for passing the combustion air of the heating burner 47, and the like are provided.
Intermittent valves 43 and 50 for interrupting the fuel supply and a heating gas proportional valve 51 capable of adjusting the fuel supply amount (gas amount) are provided. Although not shown, the burner 4 is located near the burner 47.
An igniter for igniting 7, a flame rod for confirming ignition, and the like are provided. The on-off valve (source gas valve) 43 on the fuel supply superior side is configured to be shared with the hot water supply burner 23.

The heating heat exchanger 48 is connected to a circulation circuit 52 for heating. This heating circulation path 52
Is equipped with a heating circulation pump 53 and an expansion tank 54,
The hot water is circulated and supplied to the bathroom heat exchanger 3a and the like in the bathroom heater / dryer A. In the middle of the heating circulation path 52, a bath heat exchanger 55 for exchanging heat with the bath additional heating circulation path 37 and heating the hot water in the additional heating circulation path 37 is provided. It is configured to be connected in parallel, and a heat valve for bath 56 is provided in a passage for the heat exchanger 55. A heating outlet temperature thermistor 57 for detecting an outlet hot water temperature is provided at an outlet portion of the heating heat exchanger 48 in the heating circulation path 52.

As shown in FIG. 4, an operation switch 6 for instructing operation / stop is provided to the remote controller NT _S of the heat source unit NT.
3, and an operation display lamp 64 which is turned on when the operation is started and turned off when the operation is stopped, a temperature setting switch 65 for setting a target hot water supply temperature, and instructs automatic hot water filling to the bathroom and operates the hot water again by operating again. A hot-water switch 66 to be released, a hot-water lamp 67 illuminated during the hot-water command, and turned off when the hot-water command is released, a hot-water level adjusting dial 68 for setting a target hot water level, a hot water supply temperature and the like are displayed. A temperature display section 69 and the like are provided.

[0018] Next will be described hot water supply operation of the main body control unit NT _H. After the heat source unit NT is set to the operating state by the operation switch 63, the hot water tap is opened and water flows, and when the detection value of the water amount sensor 31 exceeds the set value, the hot water supply fan 25 is operated. At the same time, each of the intermittent valves 43,
The gas proportional valve 45 is controlled so that the hot water supply burner 23 is ignited by opening the gas supply valve 44 and the gas proportional valve 45, and the outlet water temperature reaches the target hot water supply temperature set by the temperature setting switch 65. That is, the fuel supply amount, that is, the opening degree of the gas proportional valve 45 is feedforward controlled based on the deviation between the detected value of the incoming water temperature thermistor 30 and the target hot water supply temperature, the detected value of the water amount sensor 31 (flow amount), and the like. The opening degree is feedback-controlled based on the deviation between the detected value of the temperature thermistor 34 and the target hot water supply temperature, the amount of water flow, and the like. In this way, control is performed to supply hot water at the target temperature.

When a hot water switch is instructed by the hot water switch 66, hot water having a target hot water supply temperature is automatically supplied to the bath tub 19, and the water level in the bath tub 19 corresponds to the target hot water level. , The hot water supply is stopped, and thereafter, control is performed such that the hot water temperature in the bathtub 19 is maintained at the target hot water supply temperature until the hot water filling command is canceled. That is, the bath valve 34 is opened to start water supply, the bypass valve 29 is opened to increase the amount of hot water supply, and the detection value of the outlet temperature thermistor 32 of the heat exchanger 24 for hot water supply is used for filling the hot water. Feed-forward control of the fuel supply amount is performed so as to reach the target temperature, and feedback control is performed so that the detection value of the tapping temperature thermistor 34 becomes the target hot-water supply temperature. When the water level of the bathtub 19 detected by the water level sensor 39 reaches the set water level, the bath valve 3
4 is closed. Thereafter, the reheating circulation pump 38 is activated at predetermined time intervals, heated by the heat exchanger 55, and when the detection value of the bath thermistor 41 reaches the target hot water supply temperature, the reheating circulation pump 38 is stopped. At this time, if the heating circulation pump 53 is operated and the temperature of the heating outlet temperature thermistor 57 is lower than the set temperature, the heating operation by the heating burner 47 is started, and the bath thermal valve 56 is opened. It will be valved.

The remote control unit A of the bathroom heating / drying machine A
_{In S} , as shown in FIG. 5, each of a drying switch 70, a cool air switch 71, and a heating switch 72 for instructing start and stop of a drying operation, a cool air operation, and a heating operation with respect to the bathroom, and each of the above operations. Time setting switch 7 for setting the timer operation time when the timer is activated
5. A timer display section 76 for displaying the timer operation time is provided, and a heating switch 85 for instructing the start and stop of the heating operation for the undressing room and an input for setting the timer for the start time of the heating operation of the undressing room. A timer switch 86 is provided, and a ventilation switch 73 for instructing the start and stop of the ventilation operation for both the bathroom and the undressing room is provided.

Hereinafter, each of the above operating states will be briefly described. When the heating switch 72 is pressed, the heating operation is performed for the time set by the time setting switch 75. That is, the air in the bathroom is sucked in and the heat exchanger 3 for the bathroom is taken in.
b, the operation of the bathroom circulation fan 2a for returning to the bathroom is started, and the bathroom thermal valve 6 is opened so that the air sucked from the bathroom is heated and returned to the bathroom. And raise the bathroom temperature. The heating switch 72 is pressed again, or the time setting switch 75
After the time set in, the circulation fan for bathroom 2
a, and the bathroom thermal valve 6 is closed,
Stop the heating operation. During the heating operation, the temperature sensor 11
The temperature control is executed so that the temperature of the circulated air is maintained in the set temperature range by opening / closing the bathroom thermal valve 6 based on the detection information.

When the drying switch 70 is depressed, a drying operation for drying a material having a high moisture content, such as laundry, suspended in the bathroom for a time set by the time setting switch 75 is performed. Execute the operation. That is, the bathroom circulation fan 2a and the ventilation fan 2b for exhausting a part of the air taken in from the bathroom to the outside are operated, and the bathroom thermal valve 6 is opened to perform heating and ventilation. The object to be dried is dried. When the drying switch 70 is pressed again or the time set by the time setting switch 75 elapses, the bathroom circulation fan 2a and the ventilation fan 2b are stopped, and the bathroom heat valve 6 is closed. To stop the drying operation.

When the cool air switch 71 is pressed, a cool air operation is performed during the time set by the time setting switch 75, for example, in the case of bathing in the summertime to obtain a cool air feeling by circulating the air. That is, the bathroom circulation fan 2
Activate a to circulate and blow air into the bathroom. When the cool air switch 71 is pressed again or the time set by the time setting switch 75 elapses, the bathroom circulation fan 2a is stopped to stop the cool air operation.

When the ventilation switch 73 is pressed, a ventilation operation is performed in which the air in the bathroom and the undressing room is sucked and exhausted to the outside for the time set by the time setting switch 75. That is, the ventilation path by the ventilation fan 2b is
The state is switched to a state in which not only the bathroom but also the air from the air intake duct connected to the dressing room is sucked, and the ventilation fan 2b is operated to ventilate the bathroom and the dressing room. When the ventilation switch 73 is pressed again or the time set by the time setting switch 75 elapses, the ventilation fan 2b is stopped to stop the ventilation operation. Only in this ventilation operation, the continuous operation can be set from the time setting switch 75.

When the heating switch 85 for the dressing room is pushed, the heating operation of the dressing room is started. At this time, if the heating switch 85 is pressed alone, the heating operation starts immediately, and if the heating switch 85 and the ON timer switch 86 are operated together, the time set by the time setting switch 75 is set. After the time has elapsed, the heating operation is started.
In this heating operation, the air in the undressing room is sucked in through an air intake duct (not shown), passes through the heat exchanger 3a for the undressing room, and then returns to the undressing room via the air supply duct (not shown). The operation of the room circulation fan 2c is started, and the bathroom thermal valve 6 is opened to heat the air sucked from the undressing room and return it to the undressing room.
Raise the temperature of the dressing room. When the heating switch 85 is pressed again or the set time elapses after the heating operation is started, the dressing room circulation fan 2c is stopped, and the bathroom thermal valve 6 is closed to start the heating operation. Stop.

As shown in FIG. 1, the floor heating apparatus B is provided with the above-described thermal valve 81 in the hot water supply path JU for the heat exchanger 62 for floor heating, and detects the indoor temperature. A temperature sensor 82 is provided. As shown in FIG. _6A , the remote control unit B _S includes an operation switch 79 for instructing the start and stop of the floor heating operation, a temperature setting switch 80a for setting a target temperature, a set temperature, and the like. A temperature display section 80b to be displayed, a program operation switch 87 for turning on / off a program operation for changing a target temperature by designating time or time, a time setting switch 84a for setting time, and a time setting switch 84a.
A selection switch 84b for selecting whether to set the current time or the time for the program operation, and a display unit 83 for displaying the current time and the set time of the program operation. Is provided.
Further, the remote operation unit B _S is provided with a swing openable / closable cover F that covers each of the above switches.
As shown in the figure, the operation switch 7 with the cover F closed.
9 is provided with an operation piece 79a.

When an operation start is instructed by operating the operation switch 79 or the like, the control unit B _H of the floor heating apparatus B opens the thermal valve 81 to open the heat exchanger 6 for floor heating.
2 is supplied with warm water to perform the floor heating operation. During the floor heating operation, the detection value of the temperature sensor 82 is
The operation state of the thermal valve 81 is controlled so that the target temperature set in _S is reached. When the operation switch 79 is pressed again, or when all the program operation operations are completed, the thermal valve 81 is closed and the floor heating operation is stopped.

Main unit side control unit NT_HAnd each control unit A_H, B_H
Between each and the main body side control unit NT_HAnd remote control device
NT_STransfer of information such as operation information of the heat source unit NT
Control unit A_H, B_HEach and remote control device NT
_SCan be communicated as a communication terminal CT by cable connection
Is configured. Main unit side control unit NT_HAnd each control unit
A_H, B_HWith each and the main unit side control unit NT _HAnd remote
Operating device NT_SThe configuration for communication with the
In the following, based on FIG.
T_HAnd each control unit A_H, B_HTaking communication with each as an example,
The configuration will be described.

The main unit-side control unit NT _H and each of the control units A _H and B _H
Electrical cables K connecting the respective A wiring p In FIG 3, q, is configured with a three-wire, shown as r, the body side controller MC and the respective control unit A _H which constitutes the main body control unit NT _H , B _H , as well as supply of operating power from the main body side control unit NT _H to each of the control units A _H , B _H. Among the wirings p, q, and r,
The wirings p and q are connected to the main body side control unit NT _H and the respective control units A _H and B
_The wirings p and r contribute to the supply of operating power from the main-unit-side control unit NT _H to the control units A _H and B _H. Therefore, the wirings p and r function as power supply lines PF that supply operating power to each of the control units A _H and B _H that are the communication terminals CT on the electric wiring cable K. In FIG. 3, circuit parts common to the control units A _H and B _H are not described as appropriate, and are surrounded by a two-dot chain line indicated by “E” on the main body side control unit NT _H side. The parts have the same circuit configuration, and each control unit A _H ,
The circuit configuration for _BH communication is common.

The main unit-side control unit NT _H and each of the control units A _H and B _H
Exchange of information between the respective the wire p, two photocouplers P of the main body control unit NT _H side to be connected in series via the q
C1, PC2 and the control unit A _H, is performed by the two photocouplers PC3, PC 4 of B _H. Note that the control units A _H and B _H are provided with a diode bridge DB for the purpose of normal operation even when the wiring p and the wiring q are connected in opposite polarities.

[0031] Each control unit from the main body control unit NT _H A _H, B
When sending to _H, the controller A _H, in a state in which to conduct the photocoupler PC4 under control of the controller TC of B _H, the base-side controller NT _H is, its data output terminal DO
, The digital data is output from the photocoupler PC2, and the photocoupler PC2 is switched between conductive and nonconductive according to the digital data. As a result, the transistor portion of the photocoupler PC3 is turned on / off, and the digital transistor DT1 is turned on.
, The digital data is input to the data input terminal I of the controller TC.

On the other hand, the control unit A _H, when transmitting from the B _H to the main body control unit NT _H is in a state of conducting the photocoupler PC2 under the control of the main body control unit NT _H, controller A _H, When the controller TC of _BH outputs digital data from its data output terminal O, the photocoupler PC4 switches between conduction and non-conduction according to the digital data. As a result, the transistor portion of the photocoupler PC1 is turned on / off, and the digital transistor D
Through the T2, the digital data is transmitted to the main body side control unit NT.
It is input to the _H data input terminal DI.

The photo coupler PC1, PC2, each controller A _H, although for use in common for communication with each of the B _H, the base-side controller NT _H and the controller A _H, B _H respectively Is provided with the communication switching means CS for switching the communication state between the communication state to the communication enabled state and the communication disabled state, so that the main body side control unit NT _H specifies each of the control units A _H and B _H. Communication can be performed. This communication switching means CS
Specifically, as shown in FIG.
, PC2, PC3, and PC4, a transistor Tr1 connected in series, and a base of the transistor Tr1 provided corresponding to each of the control units A _H and B _H , to control the main unit-side control unit NT _H. The output signal of the output terminal O2 is input. Thus, the transistor T corresponding to each of the control units A _H , B _H according to a command from the main body side control unit NT _H.
r1 is individually switched between conducting and non-conducting, and as described above, is switched between the communication enabled state and the communication disabled state.

Main body control section NT_HEach control unit A from the side_H,
B_HIs supplied to the wiring p, p as described above.
r as the power supply line PF, and the main body side control unit NT_HProvided on the side
It is performed from the power supply_H, B_H
Supply and non-supply of operating power for each
A power supply switching means PS for switching is provided. this
The power supply switching means PS includes a transistor Tr2 as a main part.
And each control unit A_H, B_HCorresponding to each of
The main body side control unit is provided on the base of the provided transistor Tr2.
NT_HOutput signal of the control output terminal O1
It is input via the register DT3. This allows the body
Side control unit NT_HEach control unit A _H, B_HEach of
Is turned on / off independently for each transistor Tr2
Switched, supply and non-supply of operating power as described above
Is switched to Each control unit A_H, B_HIn the body side system
Gobe NT_HConverts the supply voltage from the power supply on the side to a predetermined voltage
And control unit A_H, B_HPower supply circuit V to supply each circuit inside
R is provided.

On the main body side controller NT _H side, there is further provided a short-circuit detecting means SS for detecting whether or not a short-circuit fault has occurred in the electric wiring cable K. The short-circuit detection means SS
As shown in FIG. 3, a current detection resistor R1 for detecting a current flowing through the wirings q and r, and a current detection resistor R1
Tr that is turned ON / OFF by the voltage between both ends
It consists 3 and as the main portion, the output of the transistor Tr3 is supplied to the short detection terminal SI of the main body control unit NT _H via the digital transistor DT4. That is, in both cases where a short-circuit failure occurs between the wiring p for communication and the wiring q and a short-circuit failure occurs between the wiring p and the wiring r for supplying power for operation. , Which can be detected by the current detecting resistor R1.
Even if a short-circuit fault occurs in any one of the electrical wiring cables K, the current detecting resistor R
1 can be detected.

The main body side control unit NT _H is provided with short-circuit detecting means SS.
The communication switching means CS and the power supply switching means PS so that the communication switching means CS and the power supply switching means PS do not communicate with the control units A _H and B _H corresponding to the electric wiring cable K in which the short-circuit failure is detected. Control switching. Hereinafter, the control operation of the communication switching means CS and the power supply switching means PS by the main body controller MC will be described with reference to a flowchart shown in FIG. 7 as short-circuit processing.

The main controller MC has already detected the short-circuit fault and has confirmed whether or not the supply of the operating power to any of the control units A _H and B _H has been stopped (step # 1). If no short-circuit fault is occurring, it is detected whether or not a new short-circuit fault has occurred (step # 2). When a new short-circuit fault has not occurred, the short-circuit processing is terminated without doing anything, and when the short-circuit detecting means SS detects a new short-circuit fault, that is, a current exceeding the set value flows through the current detecting resistor R1 and the transistor Tr3 Is turned on, a control signal is output from the control output terminal O1, and each of the control units A _H , B
_H , the power supply is sequentially and temporarily stopped, and it is specified which of the control units A _H and B _H the short-circuit fault has occurred in the corresponding electric wiring cable K (step #).
3). Therefore, the main controller MC also functions as a part of the short-circuit detecting means SS. When the electric wiring cable K in which the short-circuit fault has occurred is specified, the control units A _H and B _H corresponding to the electric wiring cables are turned off by the command from the control output terminal O1 to the transistor Tr2 for operation. The power is not supplied (step # 4), and the transistor T is controlled by a command from the control output terminal O2.
r1 is maintained in a non-conductive state to prevent communication (step # 5).

After the supply of the operating power and the communication are stopped, a counter provided in the main controller MC is instructed to start counting (step # 6). This counter is configured to start counting by the above-mentioned count start command, and to output a count-up signal when the set value is counted, and to determine whether a set time has elapsed since the supply of the operating power and the communication were stopped. Is used to determine
The process of the flowchart shown in FIG. 7 is repeatedly executed at high speed, and when the short-circuit fault occurs as described above and the supply of the operating power is stopped, it is determined that the short-circuit fault is occurring (step # 1), it is monitored whether or not the counter outputs a count-up signal (step # 7). If the counter is outputting a count-up signal, the output of the count-up signal is stopped, and the short-circuit fault continues. In order to confirm whether or not the operation has been completed, the transistor Tr2 of the power supply switching means PS is turned on for the electrical wiring cable K in which the short-circuit failure has been detected first, and the supply of the operating power is restarted (step # 8). . Note that, in this case, the transistor Tr1 and the like may be temporarily turned on to detect a short-circuit failure involving the wiring q. Then, when the short-circuit detecting means SS detects the short-circuit failure while the supply of the operating power is restarted (step # 9), the supply of the operating power to the electric wiring cable K is immediately stopped, and the counter is counted again. The start is instructed and the above processing is repeated (steps # 4 to # 6).

On the other hand, if a short-circuit failure is not detected in step # 9, the state where the power for operation is supplied is maintained, and the transistor Tr1 of the communication switching means CS is allowed to be appropriately turned on to enable communication. State (step # 10). That is, the operating power is temporarily supplied to the control units A _H and B _H corresponding to the electric wiring cable K for which the short-circuit detecting means SS has detected the short-circuit fault, and the short-circuit detecting means SS determines whether there is a short-circuit fault. The short-circuit inspection process to be inspected is repeatedly executed at set time intervals, and when the short-circuit detecting means SS does not detect a short-circuit failure, supply of operating power to the control units A _H and B _{H is performed} . It resumes communication.

Communication is performed according to the above-described configuration, so that the remote control units A on the two heating terminals TA side.
_When operation start is commanded in either _S or B _S ,
When the operation of the heat medium supply unit 21 is controlled to start, and when the operation stop is instructed in all of the remote control units A _S and B _S of the two heating terminals TA, the heat medium supply unit 21 is controlled. It is configured to control to stop the operation.

[Other Embodiments] Hereinafter, other embodiments of the present invention will be listed. In the above embodiment, a case is described in which the control communication device of the present invention is applied to a hot water supply / room heating system. However, the present invention can be applied to various devices such as a device including a wired remote controller. In the above embodiment, the wiring p and the wiring q for communication are used.
In both cases where a short-circuit fault occurs between the current detection resistor R1 and the case where a short-circuit fault occurs between the wiring p for supplying the operating power and the wiring r, the current detection resistor R1 can detect the short-circuit fault. Yes, and two electrical wiring cables K
Is detected by the current detection resistor R1 even if a short-circuit fault occurs in any of the electrical wiring cables K, the short-circuit fault occurs between the wiring p and the wiring q for communication. And a case where a short-circuit failure occurs between the wiring p and the wiring r for supplying power for operation, detection may be performed using separate current detection resistors, or two electric wiring cables K , A current detection resistor may be independently provided. Correspondingly, two heating terminals T
A photocoupler P for transmitting and receiving to and from A control units A _H and B _H
C1 and PC2 may be separately provided for each of the control units A _H and B _H. In the above embodiment, the present invention, the main body control unit NT _H and the controller A _H of the heat source equipment NT, the communication and the base-side controller NT _H and the remote operation device NT heat source apparatus NT between B _{H S}
Although the case where the present invention is applied to communication between the control units A and B is exemplified, the present invention may be applied to communication between the control units A _H and B _H and the remote operation units A _S and B _S in the above embodiment. In this case, the control units A _H and B _H are provided to the main unit side control unit and the remote control unit A
_S and B _S correspond to the communication terminal CT.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a hot water supply / room heating system according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a heat source unit according to the embodiment of the present invention.

FIG. 3 is a diagram showing a configuration for communication according to the embodiment of the present invention;

FIG. 4 is a front view of the remote control device for the heat source device according to the embodiment of the present invention;

FIG. 5 is a front view of a remote control unit of the bathroom heater / dryer according to the embodiment of the present invention.

FIG. 6 is a front view of a remote control unit of the floor heating device according to the embodiment of the present invention.

FIG. 7 is a flowchart according to the embodiment of the present invention;

[Explanation of symbols]

A _H, B _H control unit CS communication switching unit CT communication terminal K electrical cables MU apparatus body NT _H main body control unit NT _S remote controller PF feed line PS power supply switching means SS short-circuit detecting apparatus TA heating terminal

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takeshi Tomio 1-152 Oka, Minami-shi, Minato-ku, Osaka-shi, Osaka

Claims (6)

[Claims] A main body side control section for controlling the operation of the apparatus main body section is provided, and the main body side control section is configured to communicate operation information of the apparatus main body section with a communication terminal via an electric wiring cable. A control communication device, wherein a short-circuit detecting means for detecting whether the electric wiring cable has a short-circuit failure, and a communication state between the main body-side control unit and the communication terminal,
Communication switching means for switching between a communication enabled state and a communication disabled state, wherein the main body side control unit is configured to prevent the communication switching unit from communicating with the communication terminal when the short circuit detecting unit detects a short circuit failure. A control communication device configured to control switching. 2. The communication device according to claim 1, wherein the main body side control unit is configured to communicate with a plurality of communication terminals, and the short-circuit detection unit specifies which of the plurality of communication terminals corresponds to the electric wiring cable. In this state, the communication switching means is configured to detect a short-circuit failure of the electric wiring cable, and to switch between the communication enabled state and the communication disabled state for each of the plurality of communication terminals. The main body-side control unit is configured to control the communication switching unit so as not to communicate with a communication terminal corresponding to the electric wiring cable for which the short-circuit detection unit has detected the short-circuit failure. Communication device for control. 3. The power supply line for supplying operating power to each of the plurality of communication terminals is provided on the electric wiring cable, and supply and non-supply of operating power to each of the plurality of communication terminals are performed. Power supply switching means for switching between the power supply switching means and the power supply switching means so as not to supply operating power to a communication terminal corresponding to an electric wiring cable in which the short-circuit detection means has detected a short-circuit failure. 3. The control communication device according to claim 2, wherein the control communication device is configured to control switching. 4. The main body-side control section temporarily supplies operating power to a communication terminal corresponding to the electric wiring cable for which the short-circuit detecting means has detected a short-circuit fault, and short-circuits the short-circuit detecting means. When a short-circuit inspection process for inspecting the presence / absence of a failure is repeatedly executed at a set time interval, and when the short-circuit detection unit does not detect a short-circuit failure,
4. The control communication device according to claim 3, wherein the control communication device is configured to restart operation power supply and communication to the communication terminal. 5. The control communication device according to claim 1, wherein the communication terminal is a remote control device for manually inputting a control command to the main body side control unit. 6. The heating terminal, wherein the device main body is configured to heat and supply the liquid to be heated, and wherein the communication terminal is configured to heat the liquid to be heated supplied from the device main body as a heat source. 2. The control unit according to claim 1,
The control communication device according to any one of claims 1 to 5.