JPH071952B2 - Analog 2-core remote controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention uses a two-core transmission cable between a main body of a water heater, a bathtub, an air conditioner, etc. and an operating device for remotely controlling these. The present invention relates to an analog 2-core remote control device to be connected.

<Prior Art and Problems Thereof> A first conventional two-core remote control device in which a main body controller attached to a main body to be controlled such as a water heater and one or a plurality of remote controllers are connected by a two-core transmission cable. The problem is that since the digital signal transmission method using a microcomputer or the like is adopted, the entire apparatus becomes large and complicated, and therefore expensive. The second problem is the case of a simple two-core remote controller unlike the above, but as seen in some cases, the input is one variable resistor, two switches, the output is two lamps, This means that there is only one remote controller, so even if the system can supply hot water to multiple places, it is inconvenient because the operating switches and temperature control settings can only be operated in one place, such as in the kitchen or bathroom. . Therefore, in order to solve the second problem, it is necessary to consider a device capable of using a plurality of remote controllers despite being a simple two-core remote controller, but in that case, a simple remote controller is required. Since it is a device, the connection location of each remote control (that is, the main body controller terminal to be connected) is decided,
If an incorrect connection is made to a terminal other than the predetermined main body controller terminal, it cannot be remedied. This is the third issue.

Therefore, the present invention is directed to the first problem of the above digital signal transmission system, that is, the analog 2 using a complete analog signal transmission system that can eliminate the complexity and cost of the apparatus.
In addition to being a core remote control device, a device that can solve the second problem, that is, a variable resistance circuit or the like that can easily operate operation switches and temperature adjustments at multiple places, even though it is a simple method It is an analog two-core remote control device that can be implemented by utilizing it, and a device that can further solve the third problem, that is, which of the terminals of the main body controller terminal is connected to each of the plurality of remote controls by a two-core transmission cable. It is an object of the present invention to provide an analog two-core remote controller that allows each remote controller to control hot water supply, bath control, etc. without error even when connected to the remote controller.

<Means for Solving the Problems> In order to achieve the above object, an analog two-wire remote control device of the present invention is installed in a main body controller attached to a main body to be controlled and a place different from the main body controller. An analog two-core remote control device comprising one or a plurality of remote controls and a single two-core transmission cable connecting the main body controller and the remote control, wherein (a). The main body controller receives (a) a DC power supply, (b) a constant voltage circuit, and (c) an analog operation signal from the remote controller, starts a required control process based on the analog operation signal, and changes the state of the control process. A microcomputer for transmitting an analog drive signal to the remote controller for the purpose of displaying on a lamp / buzzer in the remote controller, (d) an input / output circuit for inputting and outputting both signals, and (e) the main body A main body controller terminal serving as a transfer point of both signals between the controller and the remote controller, and (b). The remote controller comprises: (a) an analog operation signal generation circuit including a plurality of resistors including a variable resistor and a switch connected to short-circuit the plurality of resistors among them, (B) A voltage monitoring and lamp / buzzer drive circuit that receives, monitors, determines, and processes the voltage of the analog drive signal, and (c) Corresponds to the main body controller terminal via a two-core cable for analog signal transmission. A remote control terminal, and (d) a bridge rectifier circuit in which the remote control terminal is connected to the AC side terminal and the DC side terminal is connected to the voltage monitoring and lamp / buzzer drive circuit, (c). In the analog operation signal generation circuit, (a) the resistance value when the operation switch is turned on in the circuit has a peculiar value for each type of the remote controller, and therefore (b) based on the resistance value when the operation switch is turned on. The value of the analog operation signal generated and transmitted is also configured to have a unique value for each type of remote controller, (d). The microcomputer of the main body controller transmits (a) the analog operation signal when the operation switch is turned on, which is transmitted from the remote controller, through the remote control terminal, the two-core transmission cable, any terminal of the main body controller, and the input / output circuit. When received for the first time, (b) which remote controller the received signal is transmitted from is determined from the voltage level value of the analog operation signal, and it is stored, and (c) after that, Based on this storage, it is configured so that an analog drive signal for the remote controller can be transmitted without error to the remote controller determined as described above via both terminals described above. There is.

<Operation> In the analog two-core remote controller of the present invention, the signals exchanged between the remote controller and the main body controller are both complete analog signals generated by the input / output circuit in the main body controller and the variable resistance circuit in the remote controller. It functions as an analog signal transmission system, and as compared with the conventional two-core remote control device of digital signal transmission system, the complexity of the circuit is eliminated and the manufacturing cost of the device is remarkably low. Further, the analog two-wire remote control device of the present invention generates an analog operation signal by a simple variable resistance circuit and an input / output circuit, so the device is extremely simple, but operation switches and temperature control operations can be reliably performed at multiple locations. Can be carried out. Further, the microcomputer in the main body controller of the analog two-core remote control device of the present invention is an operation switch from the remote control.
When the analog operation signal by ON is received for the first time, which remote controller is connected to which main body controller terminal, the type of the remote controller (bath remote controller or hot water remote controller) depends on the voltage level of the signal. It is possible to send an analog drive signal for the remote controller after that to the remote controller without error based on the stored memory. Each remote controller can be made to control hot water supply or bath without paying attention to the problem of incorrect connection to.

<Example> An analog two-core remote control device of the present invention will be described with reference to the drawings illustrating an example thereof. FIG. 1 is a circuit diagram showing an embodiment of the present invention (however, in this circuit diagram, a monitoring and lamp driving circuit
10 and 10 'have exactly the same structure),
FIG. 2 is a flow chart showing the operation of this embodiment, FIG. 3 is a graph showing the types of voltages of analog operation signals, and FIG.
The figure is a graph showing the types of voltages of the analog drive signal.

In the following description relating to FIG. 1, the remote controller installed in the bathroom is called a bath remote controller, and the remote controller installed in the hot water supply area is called a hot water supply remote controller.

First, as shown in steps 200 and 201 of the flowchart of FIG. 2, when the operation switch 5'of the hot water supply remote controller 20 '(shown in FIG. 1) is turned on, the analog operation signal generation circuit 15 (also shown in FIG. 1) Effective resistance in'is resistance 1 '
And the voltage of the analog drive signal (shown in FIG. 3) based on the effective resistance 1'generated by the generation circuit 15 '.
v ₁ is input to the microcomputer 40 through the two-core transmission cable E, the input / output circuit 33 ′ and the electric line 34 ′. Therefore, the microcomputer 40 determines from the voltage level of this signal v ₁ that the remote controller connected to the main body controller terminals 48 and 49 via the two-core transmission cable E is the hot water supply remote controller, and stores this. Based on this memory, the analog drive signal V ₁ for turning on the hot water supply operation lamp 7 ′ for turning on the hot water supply operation lamp 7 ′ (see FIG. 4) is stored on the basis of this memory. )
The input / output circuit 33 'is instructed to output. Therefore, the main voltage V ₁ reaches the hot water supply operation lamp 7'through the input / output circuit 33 ', the two-core transmission cable E, the voltage monitoring and lamp driving circuit 10', and lights it (Fig. 2). Flow chart, step 203). Next, the operation switch 5'of the analog operation signal generation circuit 15 'of the hot water supply remote controller is turned off.
From to temperature control variable resistor 4 'begins regulation (i.e., when the hot water supply system enters the stage of combustion), accordingly, the analog operation signal v ₃ to v ₄ (see FIG. 3) is hot water remote control 20' It is transmitted to the main body controller 30. As a result, the main body controller 30 responds to this operation signal by the analog drive signal V ₂ for turning on the hot water supply combustion lamp 8 ′.
(See FIG. 4) via the two-core transmission cable E,
It sends it out to the hot water supply remote controller 20 'and turns on the lamp 8' (flowchart in FIG. 2, steps 204 and 205).
reference). On the side of the bath remote controller 20, the effective resistance of the analog operation signal generation circuit 15 for turning on the operation switch 5 is the sum of the resistance 1 and the resistance 2, and the analog operation signal indicated by v ₂ in FIG. It is input to the microcomputer 40 through the transmission cable D, the input / output circuit 33, and the electric line 34. Then, the microcomputer 40 determines from the voltage level of this signal v ₂ that the remote controller connected to the main body controller terminals 43 and 44 via the two-core transmission cable D is a bath remote controller, and determines that this is the bath remote controller. Then, the input / output circuit 33 is instructed to output the analog drive signal V ₁ (see FIG. 4) based on this storage. Therefore, this voltage V ₁ reaches the bath operation lamp 7 through the input / output circuit 33, the two-core transmission cable D, the voltage monitoring and lamp drive circuit 10, and lights it (step 206 in FIG. 2, step 206). , 207,
See 208).

Next, when the bath enters the combustion stage, the main body controller 30
Analog drive signal for lighting the bath combustion lamp 8
V ₂ (see FIG. 4) is sent toward the bath remote controller 20 via the two-core transmission cable D, and the lamp 8 is turned on (the flowchart of FIG. 2, steps 209 and 210).
reference).

As described above, when the analog two-core remote controller of this embodiment is used, by turning on the operation switch 5'or 5 of the remote controller 20 'or 20, the remote controller 20' or 20 transmits to the main controller 30. Since the level of the analog operation signal to be generated can be set to a value peculiar to the remote control (such as v ₁ or v ₂ ), the microcomputer 40 in the main body controller 30 that receives this signal will Regardless of which terminal of the main body controller arrives via the two-core transmission cable, it is possible to clearly recognize the type of the remote controller of the transmission source, and then the terminal where this signal arrives Thus, the analog drive signal for the remote controller can be transmitted to the recognized remote controller without error.

In the above embodiment, the case of using two remote controllers, a bath remote controller and a hot water remote controller, is explained, but the analog two-core remote controller of the present invention is not limited to two remote controllers, and one remote controller or a few remote controllers. Can be conveniently used as in the above examples.

<Effect> The first effect of the analog two-wire remote control device of the present invention described in claim 1 is that all signals exchanged between the main body controller and the remote control are analog signals, which is the same as in the conventional digital signal transmission system. Compared with a two-core remote controller, the complexity of the circuit is eliminated, and the manufacturing cost of the device is significantly lower.

The second effect is that, although the analog two-wire remote control device of the present invention is of a simple system, it is possible to operate the operation switch and the temperature control setting at a plurality of places. The effect of is that, when the microcomputer in the main body controller of the analog two-wire remote control device of the present invention receives the analog operation signal by the operation switch ON from the remote control for the first time, which main body controller terminal to which the remote control is connected is Even if there is, the voltage level of that signal can be used to determine and store which type of remote control the remote control is based on, and based on that storage, the analog drive signal for that remote control will be passed through that connection terminal. However, you can make a call to the remote control without any error, so be careful about the problem of incorrect connection to the controller terminal of the remote control. Rather, it is that it is possible to each of the remote control under the control of or bath control of hot water supply.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention, FIG. 2 is a flow chart showing the operation of this embodiment, FIG. 3 is a graph showing the type of voltage of an analog operation signal, and FIG. 4 is an analog drive signal. It is a graph showing the type of voltage. 5, 5 ': Operation switch 6, 6': Bridge type rectification circuit 10, 10 ': Voltage monitoring and lamp drive circuit 15, 15': Analog operation signal generation circuit 20, 20 ': Remote controller (remote control) 30: Main body Controller 31: DC power supply 32: Constant voltage circuit 33, 33 ': Input / output circuit 40: Microcomputer 41-42, 46-47: Remote controller (remote control) terminal 43-44, 48-49: Controller terminal D, E: 2-core transmission cable

Claims (1)

[Claims] 1. A main body controller attached to a main body to be controlled, one or a plurality of remote controllers installed when the main body controller is different, and a single main body controller and the remote controller connected to each other. An analog 2-core remote control device comprising a 2-core transmission cable, comprising: (a). The main body controller receives (a) a DC power supply, (b) a constant voltage circuit, and (c) an analog operation signal from the remote controller, starts a required control process based on the analog operation signal, and changes the state of the control process. A microcomputer for transmitting an analog drive signal to the remote controller for the purpose of displaying on a lamp / buzzer in the remote controller, (d) an input / output circuit for inputting and outputting both signals, and (e) the main body A main body controller terminal that serves as a transfer point of both signals between the controller and the remote controller; and (b). The remote controller comprises: (a) an analog operation signal generation circuit including a plurality of resistors including a variable resistor and a switch connected to short-circuit the plurality of resistors among them, (B) A voltage monitoring and lamp / buzzer drive circuit that receives, monitors, determines, and processes the voltage of the analog drive signal, and (c) Corresponds to the main body controller terminal via a two-core cable for analog signal transmission. A remote control terminal, and (d) a bridge rectifier circuit in which the remote control terminal is connected to the AC side terminal and the DC side terminal is connected to the voltage monitoring and lamp / buzzer drive circuit, (c). In the analog operation signal generation circuit, (a) the resistance value when the operation switch is turned on in the circuit has a peculiar value for each type of the remote controller, and therefore (b) based on the resistance value when the operation switch is turned on. The value of the analog operation signal generated and transmitted is also configured to have a unique value for each type of remote controller, (d). The microcomputer of the main body controller transmits (a) the analog operation signal when the operation switch is turned on, which is transmitted from the remote controller, through the remote control terminal, the two-core transmission cable, any terminal of the main body controller, and the input / output circuit. When received for the first time, (b) which remote controller the received signal is transmitted from is determined from the voltage level value of the analog operation signal, and it is stored, and (c) after that, Based on this memory, an analog two-core remote control device configured so that an analog drive signal for the remote control can be transmitted to the remote control determined as described above via both terminals described above without error. .