JPH071953B2 - 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, Even if the system has only one remote controller and therefore can supply hot water to a plurality of places, it is inconvenient because the operation switch and the temperature control can be operated only in one place such as the kitchen or the bathroom. Therefore, in order to solve the second problem, a device capable of using a plurality of remote controls should be considered in spite of being a simple two-core remote controller, but in that case, it is a simple device. Therefore, the connection location of each remote controller (that is, the main body controller terminal to be connected) is determined, and if a terminal other than the predetermined main body controller terminal is erroneously connected, it cannot be repaired. This is the third issue. Then, the fourth problem is that when the work for connecting the remote controller to the main body controller is carried out, there may be a connection error of the remote controller or a construction error such as connecting a remote controller of the same type to each terminal of the main body controller. That's what it means.

The present invention is a first problem of the digital signal transmission system, that is, an analog two-core remote controller using a complete analog signal transmission system that can eliminate the complexity and cost of the device, and the second problem. And an analog two-core remote control device that can be implemented by using a variable resistance circuit or the like that allows easy operation of operation switches and temperature control settings at a plurality of locations despite a simple method. In addition, when the remote controller discrimination capability is given to the device capable of solving the third and fourth problems, that is, the microcomputer of the main body controller, each remote controller is connected to which terminal of the main body controller terminal. Also, the type of each remote controller can be well discriminated and stored. Based on this memory, each remote controller controls hot water supply and bath control thereafter. In addition to being an analog two-core remote control device that can be performed without error, if the remote control discrimination becomes difficult (because the input signal is different from the microcomputer), the input circuit, the terminal section, or the inside of the remote control Provided with the analog operation signal generation circuit, an analog two-core remote control device capable of determining that there is a construction defect such as a defective connection of the electric wire terminal section or the same type of remote control being connected to each terminal of the main body controller. The purpose is to do.

<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 determines the state of the control process as described above. A microcomputer for transmitting an analog drive signal to the remote controller for the purpose of causing the lamp / buzzer in the remote controller to emit a display sound, (d) an input / output circuit for inputting and outputting both signals, and (e) the main body A main body controller terminal serving as a transmission / reception point for both signals between the controller and the remote controller, and (b). The above remote controller generates (a) an analog operation signal including a plurality of resistors including a variable resistor for temperature adjustment setting and a switch connected to short-circuit the plurality of resistors among them. A circuit, (b) a voltage monitoring and lamp / buzzer drive circuit that receives, monitors, determines, and processes the voltage of the analog drive signal, and (c) a two-core cable for analog signal transmission to the main body controller terminal. And (d) a bridge-type 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 total impedance value when the operation switch in the circuit is OFF has a value that is peculiar to each remote control type, and therefore (b) the operation before the start of the main operation stage. The voltage level value of the initial analog operation signal generated and transmitted based on the total impedance when the operation switch is turned off in the preparatory stage is also configured to have a unique value for each type of remote controller, (d). The microcomputer of the main body controller (a) sends the initial analog operation signal automatically transmitted from the remote controller to the remote control terminal and the two-core transmission cable at the same time when the DC power is turned on in the operation reference stage. , Which is received via any terminal of the main body controller and the input circuit, and (b) at the same time as the reception, it is determined from which remote controller the received signal is transmitted by the initial analog operation signal. From the voltage level value of, and store it, (c) after this, if the main operation stage begins, based on the above memory, for the remote controller determined as described above, via both terminals, An analog drive signal can be sent to the remote controller. (D) If the value of the initial analog signal from the remote controller during the above-mentioned operation preparation stage is abnormal, The remote controller is configured so that it can be judged that there is something wrong with any part of the total input circuit including the analog drive signal generation circuit, the terminal connection part and the input circuit, and the start of the operation stage can be suppressed. It is characterized by being.

<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 circuit, so the device is extremely simple, but operation switches and temperature control operations are carried out at a plurality of locations. be able to. Further, the microcomputer in the main body controller of the analog two-wire remote control device of the present invention has a main body controller terminal to which the remote control is connected at the time of receiving an initial analog operation signal by the operation switch OFF from the remote control during the operation preparation stage. No matter which is, depending on the voltage level of the signal,
The type of remote control (whether the bath remote control is a hot water supply remote control, etc.) can be determined and stored, and based on that storage,
After that, the analog drive signal for the remote controller can be sent to the remote controller via the connection terminal without any error, so that you do not have to worry about the incorrect connection to the controller terminal of the remote controller. The remote controller can control hot water supply or bath. Further, in the analog two-core remote controller of the present invention, when it is difficult to determine the remote controller of the microcomputer (because the incoming initial analog operation signal value is abnormal) in the operation preparation stage, the cause is generation of the analog operation signal of the remote controller. Abnormality in any part of the total input circuit including the circuit, terminal connection part and input circuit, for example, defective connection of the terminal part or construction failure such as remote controller of the same type being connected to each terminal of the main controller It is possible to suppress the start of the operation stage.

<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, the voltage monitoring and lamp driving circuits 10 and 10 'have exactly the same structure), and FIG. A flow chart showing the operation of the example,
FIG. 3 is a graph showing the type of voltage of the analog operation signal, and FIG. 4 is a graph showing the type of voltage 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.

Examples of the analog two-core remote controller of the present invention will be described below.
The operation preparation stage and the main operation stage will be explained separately.

First, it is assumed that the bath remote controller is connected to the position of the remote controller 20 shown in FIG. 1 in the operation preparation stage.
Now, as the beginning of the operation preparation stage, the main body controller 30
Assuming that the DC power supply 31 of the microcomputer 40 is just turned on (because this time is before the main operation is started, and therefore the operation switch 5 is open), the resistance 1 of the analog operation signal generation circuit 15 of the remote controller The voltage of the DC power supply 31 is automatically applied to the terminals 2 and 4 via the input / output circuit 33. Therefore, the analog operation signal generation circuit 15 generates the initial analog operation signal and outputs the same signal. Remote control terminal 41-4
2, 2-core transmission cable D, main unit controller terminal 43-4
4. Input to the microcomputer 40 via the input circuit 33 and the electric line 34. The resistances 1, 2, and 4 in this case correspond to the temperature control variable resistances at the time of actual operation at a later time, and thus the voltage value V of the initial analog operation signal input to the microcomputer 40 as described above.
As shown in FIG. 3, v ₂ ′ ≦ V ≦ v ₃ ′ (in the following description of this embodiment and in the flow chart of FIG. 2, the electric wires 34 and 34 ′ are input to the microcomputer 40. The voltage values of the signals are V and V ′, respectively, regardless of the signal types.
Is displayed), and then the microcomputer 40 uses the controller terminal
It is determined that the bath remote control is connected to 43-44 via the two-core transmission cable D, and it is stored as such.
On the other hand, assuming that the hot water supply remote controller is connected to the position of the remote controller 20 'shown in FIG. Analog operation signal generation circuit 1
5'generates and transmits an initial analog operation signal based on the resistors 1 ', 2', 4 ', and finally makes it input to the microcomputer 40 via the electric line 34' (this input to the microcomputer 40). finally the voltage value V of the signal ', as shown in FIG. 3, v ₂
≦ V '≦ v is _3, and with a purpose of distinguishing cases of the bath remote controller and hot water supply remote _{controller, v 2 ~v 3 <v 2} ' ~v 3 '
It has become). Therefore, the microcomputer 40 determines that the hot water supply remote controller is connected to the main body controller terminals 48-49 via the two-core transmission cable E, and stores it as such (the above is the flowchart of FIG. 2, step). 200, 2
01, 203, 204, 205, 206). In the above operation preparation stage, it is recognized that the bath remote controller and the hot water supply remote controller are connected to the main body controller terminals 43-44 and 48-49, respectively, and then the main operation stage starts.
At the main operation stage, first, the operation switch 5 of the bath remote control
When turned on (that is, the resistors 2 and 4 are short-circuited), the analog operation signal generation circuit 15 of the bath remote controller generates and transmits an analog operation signal based on the resistor 1, and this signal is for remote control terminals 41-42 for 2-core transmission. After passing through the cable D, the main body controller terminals 43-44, the input circuit 33, and the electric line 34, the voltage value v ₁ ′ finally shown in FIG. In response to this input, the microcomputer 40 starts control of the required main operation related to the bath. Then, in order to turn on the operation lamp 7 of the bath remote controller, the voltage V ₁ of the analog drive signal of the operation lamp ON to the output circuit 33 via the electric line 35
(See FIG. 4) is instructed to output to the voltage monitor and lamp drive circuit 10 of the bath remote controller, and the operation lamp 7 is turned on. Next, when the control of this main operation progresses and the bath enters the combustion stage, the operation switch 5 is opened, and the bath remote control is operated based on the bath temperature adjustment setting variable resistance (sum of resistors 1, 2, 4) (microcomputer). An analog operation signal (which requests temperature control setting to 40) is generated and transmitted, and finally signal voltages of values v ₂ ′ to v ₃ ′ as shown in FIG. ₃ are input to the microcomputer 40. Therefore, the microcomputer 40 responds to this input signal to start the combustion control operation of the bath and to turn on the combustion lamp 8 in the bath remote control, to the output circuit 33 via the electric line 35, and the analog of the combustion lamp ON. Drive signal voltage V ₂
(See FIG. 4) is commanded to output to the voltage monitoring and lamp driving circuit 10 of the remote controller, and the combustion lamp 8 is turned on. On the other hand, when the hot water supply remote controller starts the main operation stage, the analog operation signal voltage v ₁ (see FIG. 3) by the hot water supply operation switch 5′ON is input to the remote controller 40 by a process similar to that of the bath remote controller. Let Then, in accordance with the analog operation signal voltage value v ₁ , the microcomputer 40 starts the required main operation related to hot water supply in the same manner as in the case of the bath remote controller described above, and at the same time, turns on the operation lamp 7 ′ of the hot water remote controller. The output circuit 33 'is instructed via the electric line 35' to output the analog drive signal of the voltage value V ₁ shown in the figure to the voltage monitoring and lamp drive circuit 10 'of the hot water supply remote controller, and the same operation lamp 7' Light up. Then, when the hot water supply system enters the combustion stage, the analog operation signal generation circuit 15 'of the hot water supply remote controller causes the voltage of the analog operation signal based on the combustion setting variable resistors 1', 2 ', 4'as in the case of the bath remote controller described above. v ₂ to v ₃ a (see FIG. 3) is input to the microcomputer 40. Then, the microcomputer 40 responds to the signal voltages v _{2 to} v ₃ to start the combustion control operation of the hot water supply, and at the same time, to output the analog operation signal of the voltage value V ₂ shown in the fourth toward the remote control, the electric line. Output circuit via 35 '
33 'is instructed to turn on the combustion lamp 8'. The voltage value v ₁ or v ₁ ′ of the analog operation signal (to the microcomputer 40) from the bath remote controller or the hot water supply remote controller at the start of the main operation phase described above is higher than the voltage value of any temperature adjustment analog operation signal of both remote controllers. V ₁ (or v ₁ ′)
It is decided like <v ₂ (see Fig. 3), but it does not matter if v ₁ and v ₁ ′ are the same or different. The operation flow of the above-described embodiment of the analog two-core remote controller of the present invention after the start of the main operation is as shown in step 21 of the flowchart of FIG.
1, 212, 213, 214, 215, 216, 217, 218.

In all the above explanations, the bath remote controller and the hot water remote controller are connected to the remote controllers 20 and 20 'of FIG. 1, respectively, but the bath remote controller and the hot water remote controller are respectively remote controller 20'. The microcomputer 40 can be recognized as such even when connected to positions 20 and 20, and control can be performed based on such position recognition and an analog drive signal can be transmitted (the flowchart of FIG. 2, Steps 200, 201, 202, 205, 207, 208, 21
1, 212, 213, 214, 215, 217, 218).

Then, according to the embodiment of the present invention, the voltage values v _{2 to} v ₃ , v ₂ ′ to v ₃ ′ of the initial analog operation signal in the above-mentioned operation preparation stage.
If either or both (see FIG. 3) indicate an abnormal value deviating from a predetermined value, the microcomputer 40 determines the total input circuit from the remote controller to the main body controller 30 (that is, the analog operation signal generation circuit in the remote controller). , A circuit that includes the terminal section and the input circuit) causes a disturbance in the total impedance value of the total input circuit (for example, a connection failure of the terminal section or the same for each terminal of the main controller). It is determined that there is an intervening construction defect such as the connection of a remote controller of a type), and the operation is performed to prevent the start of the operation stage (see the flowchart of FIG. 2, steps 209 and 210).

In the above embodiment, the case of using two remote controllers, a bath remote controller and a hot water remote controller, has been described, but the analog two-core remote controller of the present invention is not limited to two remote controllers.
Even when using one or a plurality of remote controllers, the same function as in the above embodiment can be achieved.

<Effect> The first effect of the analog two-core remote controller of the present invention is that all signals exchanged between the main body controller and the remote controller are analog signals, which is compared with the conventional two-core remote controller of digital signal transmission system. Then, the complexity of the circuit is eliminated, and the manufacturing cost of the device is remarkably low. 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 at a plurality of places. Furthermore, a third effect is that the microcomputer in the main body controller of the analog two-wire remote controller of the present invention connects to the remote controller at the time of receiving an initial analog operation signal from the remote controller when the operation switch is turned off during the operation preparation stage. The remote controller type can be determined and stored based on the voltage level of that signal, regardless of which main unit controller terminal is used, and the analog drive signal for that remote controller after that can be stored based on that memory. You can make a call to the remote controller without error through the remote controller, so you can control hot water supply or bath control for each remote controller without paying attention to the problem of incorrect connection to the controller terminal of the remote controller. It means that it can be done correctly. A fourth effect is that when the analog two-wire remote control device of the present invention has difficulty in determining the remote control of the microcomputer at the stage of operation preparation (because the incoming initial analog operation signal value is abnormal), the cause is the remote control. Abnormality in any part of the analog operation signal generation circuit, the terminal connection part and the total input circuit including the input circuit, for example, the connection of the terminal part is poor or the remote controller of the same type is connected to each terminal of the main body controller This means that it can be judged as defective and the start of the operation phase can be suppressed.

[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 in a place different from the main body controller, 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 determines the state of the control process as described above. A microcomputer for transmitting an analog drive signal to the remote controller for the purpose of causing the lamp / buzzer in the remote controller to emit a display sound, (d) an input / output circuit for inputting and outputting both signals, and (e) the main body A main body controller terminal serving as a transmission / reception point for both signals between the controller and the remote controller, and (b). The above remote controller generates (a) an analog operation signal including a plurality of resistors including a variable resistor for temperature adjustment setting and a switch connected to short-circuit the plurality of resistors among them. A circuit, (b) a voltage monitoring and lamp / buzzer drive circuit that receives, monitors, determines, and processes the voltage of the analog drive signal, and (c) a two-core cable for analog signal transmission to the main body controller terminal. And (d) a bridge-type 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 total impedance value when the operation switch in the circuit is OFF has a value that is peculiar to each remote control type, and therefore (b) the operation before the start of the main operation stage. The voltage level value of the initial analog operation signal generated and transmitted based on the total impedance when the operation switch is turned off in the preparatory stage is also configured to have a unique value for each type of remote controller, (d). The microcomputer of the main body controller (a) sends the initial analog operation signal automatically transmitted from the remote controller to the remote control terminal and the two-core transmission cable at the same time when the DC power is turned on in the operation reference stage. , Which is received via any terminal of the main body controller and the input circuit, and (b) at the same time as the reception, it is determined from which remote controller the received signal is transmitted by the initial analog operation signal. From the voltage level value of, and store it, (c) after this, if the main operation stage begins, based on the above memory, for the remote controller determined as described above, via both terminals, An analog drive signal can be sent to the remote controller. (D) If the value of the initial analog signal from the remote controller during the above-mentioned operation preparation stage is abnormal, The remote controller is configured so that it can be judged that there is something wrong with any part of the total input circuit including the analog drive signal generation circuit, the terminal connection part and the input circuit, and the start of the operation stage can be suppressed. Analog 2-core remote control device.