JPH02202796A - Twin core remote controller for hot water supplying device and the like provided with bath - Google Patents

Abstract

PURPOSE:To realize the exchange of a multiplexed analog signal between a control circuit and a remote controller by switching the polarity of the control circuit by a switching signal outputted from a microcomputer and switching an input/output route. CONSTITUTION:In a main control circuit A, input and output terminals T1 and T2, to which remote controllers C1 and C2 are connected, and a microcomputer mu is provided. In the microcomputer mu, a switching signal output terminal 15 is provided to output the switching signal so that the polarity can be alternatively switched synchronously with the input/output of data. Then, the polarities of the terminals T1 and T2 are changed over by a switching means 23 according to the switching signal. In the circuits of the remote controllers C1 and C2, a hot water supply control circuit CQ and a bath control circuit CF are provided and connected to respective signal lines with the reverse polarity. Thus, the many kinds of the data are multiplexed as a level signal and exchanged between the remote controller and main control circuit and the data to be inputted and outputted from the remote controller are inputted and outputted to the microcomputer with time division.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a two-core remote control device for a bath water heater, etc., and particularly relates to a main control circuit incorporating a microcomputer (hereinafter referred to as a microcomputer). No built-in microcontroller 2
This invention relates to a two-core remote control device for a water heater with a bathtub, etc., which is capable of transmitting and receiving multiplexed analog data to and from a separate remote control device (hereinafter referred to as a remote control). Remote control devices such as bath water heaters incorporate a microcomputer in the main control circuit to reduce the cost of the entire device.
There is no microcomputer on the remote control side, and in the transmitting example, a different voltage (level) is assigned to each data item, these are added together and output, and the receiving side distinguishes the received data and inputs it to the corresponding circuit. (Refer to Japanese Unexamined Patent Publication No. 5!lt-221550).

In addition, in this case, in order to make it easier to distinguish between each data on the receiving side, there is a method in which the on-time and transmission timing of each data are made different (see Utility Model Application Publication No. 60-4087).
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(Problem to be solved by the invention) However, multiplexing of level signals naturally has its limits, and many types of signals are transmitted and received, such as in the remote control device of a bath heater, and moreover, there are many types of signals, such as temperature setting signals. In the case where a signal whose signal value is given some width is included, the reality is that at most one signal value can be connected to the main control circuit. Therefore, in remote i4 control devices for bath water heaters that require a sub remote control to be operated in the bathroom in addition to the main remote control, there are two temperature setting signals, one for hot water supply and one for bath, so a remote control without a microcontroller is required. has been considered extremely difficult to use.

The present invention has been made in consideration of the above circumstances,
The purpose of this is to enable multiplexed analog data to be sent and received between a main control circuit with a built-in microcomputer and a remote control without a built-in microcomputer.

(Means for solving the three problems) The two-core remote control device for a water heater with a bath, etc. according to the present invention has the following features:
To achieve the above purpose, for example, as shown in FIG.
Input/output terminal T1 to which the remote control is connected to the main control circuit A. T
2 and a microcomputer μ are provided, and a switching signal output terminal 15 for outputting a switching signal whose polarity is alternately switched in synchronization with the input/output of data to the microcomputer μ, and a switching signal output terminal 15 for outputting a switching signal whose polarity is alternately switched in synchronization with the input/output of data, and a switching signal output terminal 15 that changes the polarity of the input/output terminals Tl and T2 by the switching signal. The remote controller is characterized in that two control circuits for inputting and outputting different signals are connected to each signal line with opposite polarity.

(Function) According to the above configuration, various types of data are multiplexed as level signals and transmitted and received between the remote control and the main control circuit, and data input and output from the remote control is inputted to the microcomputer 11 in a time-sharing manner. Output.

(Example) Hereinafter, the present invention will be specifically explained based on the same side.

FIG. 1 shows a remote I4 control device for a bath water heater, etc., according to an embodiment of the present invention. In the figure, A is the main control circuit;
C1 is a main remote controller, C2 is a sub remote controller, and μ is a microcomputer arranged in the main control circuit A. The main control circuit A and the main remote controller CI are connected by two signal lines L1 and L2, and are connected to the sub remote controller C2 by two signals *11 and 12. TI-T2 is an input/output terminal in the circuit of the main remote control CI, 1 is a main operation switch, and 2 is a main hot water temperature control volume. 3 is a main operation lamp, 4 is a main hot water supply combustion lamp, and 5 is a main priority lamp, which are each connected to the collectors of PNP l-transistors Trl to Tr3, which are connected to the base of Zener diodes 71 to Z3 having different Zener voltages. There is. In the circuit of the sub remote controller C2, 6 is a sub operation switch, and 7 is a sub hot water temperature control volume.

8 is a sub operation lamp, and 10 is a sub hot water heating combustion lamp, each of which has a PNP transistor Tr connected to the base of Zener diodes Z4 and Z5 having different Zener voltages.
4. Connected to the collector of Tr5. Reference numeral 9 denotes a sub-priority lamp, which is turned on and off by switching the priority changeover switch 31 at the front stage of the sub-hot water temperature control volume 7.

Among the circuits of the sub-remote controller C2, the above circuit is a hot water supply control circuit CQ, and the polarity of the signal line is opposite to that of the bath control circuit CF, which will be described later. Bath 'M's first path CF has a bath temperature control volume 11 and a PNP connected to the base of Zener diodes Z6 and Z7, each having a different Zener voltage.
A heat retention lamp 13 connected to the collectors of the L-transistors Tr6 and Tr7 and a bath combustion lamp 14 are arranged. 12 is a heat retention switch that short-circuits the Zener diode Z6. In the main control circuit A, 15 is a hot water supply/bath switching boat, 16 is a sub operation output boat, I7 is a main hot water temperature control/operation switch boat, 18 is a sub combustion output boat, 19 is a sub hot water supply/bath temperature control/operation・Thermal insulation switch human power boat, 20 is the temperature control priority output boat, 21 is the main operation output boat, 22 is the main combustion output port, 23 is the hot water supply/window switching circuit (switch), 24 is the transistor, 25 to 28 are each diode It is. Moreover, FIG. 2 is a timing diagram of the hot water supply/bath switching circuit and the input/output board of the microcomputer μ.

In the above configuration, when manually inputting the data of the main remote control C1, the hot water supply/bath switching boat 15 is used as a "standby".
Set the hot water supply/bath switching circuit 23 to the hot water supply side (Q side), set the temperature control priority output port 20, main operation output port 21, and main combustion output port 22 to IT H'', and turn the main operation switch l or main hot water temperature control volume 2 is manually input from the main hot water supply temperature control operation switch input boat 17 to the microcomputer μ.Furthermore, when outputting data to the main remote control C1 following this input, the hot water supply/bath switching boat 15 is input to the microcomputer μ.
t H", the hot water/bath switching circuit 23 is left on the hot water supply side (Q side), the temperature control priority output port 20 and the main combustion output port 22 are set to "H", and the main operating output port 21 is set to Tt L. ” then Zener diode Zl
When only the main operation lamp is lit by the action of , and when the main operation lamp 3 and the main hot water supply combustion lamp 4 are to be lit, by setting the main operation output boat 21 and the main combustion output port 22 to "P", the main operation lamp is turned on. 3 and the main hot water supply combustion lamp 4 are turned on. Also, when the microcomputer μ is set to the main hot water temperature control priority mode by the hot water priority switch 31, the hot water/bath switching boat 15 is set to tt L", and the hot water supply/bath switching boat 15 is set to tt L". The bath switching circuit 23 is set to the bath side (F side), the main operation output boat 21 and the main combustion output port 22 are set to 11°, and the main temperature is set to AMl.
When the first output port 20 is set to "II L", the transistor 24 is turned on and the main priority lamp 5 is turned on.

In addition, when inputting data from the sub-remote controller C2, if you manually input the hot water data, use the hot water/bath switching boat 1.
5 is set to It H11, the hot water supply/bath switching circuit 23 is set to the hot water supply side (Q side), the sub-operation output port 16 and the sub-combustion output port 18 are set to IT H", and the sub-hot water supply/bath temperature control/operation/warmth retention is set. By manually inputting the data of the switch human powered boat 19, the on/off data of the sub operation switch 6 can be input.
In the case of hot water supply priority, the hot water supply priority switch manually determines whether the Q side is the F side, and if it is the F side, the sub hot water temperature control volume 7 can be input. When inputting bath data, the hot water supply/bath switching boat 15 is set to 11L11, and the hot water supply/bath switching circuit 23 is set to 11L11.
When set to the bath side (F side) and set the sub-operation output port 16 and sub-combustion output port 18 to 1″H, the on/off data of the sub-operation switch 6 can be input, and the sub-bath temperature control volume 11 and the heat retention switch can be input. 12 can be input.

When outputting hot water data to the sub remote controller C2, set the hot water/bath switching boat 15 to "H", set the hot water/bath switching circuit 23 to the bath side (F side), and switch to the sub combustion output port. 18 to ``)'' and sub-operation output port 16 to II L'', the Zener diode Z4
The sub operation lamp 8 is turned on by the action of the sub operation output port 16 and the sub combustion output port 18 are turned on.
”, the sub operation lamp 8 and the sub hot water supply lamp lO
is lit. In addition, in this case, the hot water priority switch 31
If it is on the bath side (F side), the sub-priority lamp 9 is also turned on. Next, when outputting bath data, switch the hot water/bath switching boat I5 to 111. '', set the hot water supply/bath switching circuit 23 to the bath side (F side), set the sub-combustion output port 18 to "H", and set the sub-operation output port 16 to "L", the heat retention lamp I3 is turned off by the action of the Zener diode Z6. When the sub-operation output port 16 and the sub-combustion output port 18 are set to IJll, the heat retention lamp 13 and the bath combustion lamp [4] are turned on.

In other words, IjPi23 between hot water supply and bath switching is a hot water supply example (Q side)
When the main remote controller C1 and the sub remote controller C2 are set to the hot water supply data, input/output is performed, and when the main remote controller C1 is set to the bath side (second side), the bath data is input/output to the sub remote controller C2.

Note that the hot water/bath switching circuit 23 may be configured using a switching element such as a transistor.

(Effects of the Invention) As explained above, in the present invention, the polarity of the control circuit can be switched and the input/output path can be switched using the switching signal output from the switching signal output terminal 15 of the microcomputer. It is possible to send and receive multiplexed analog signals between the main control circuit with a built-in microcomputer and the remote control without a built-in microcomputer.

[Brief explanation of the drawing]

FIG. 1 shows a remote control device for a bath water heater according to an embodiment of the present invention. FIG. 2 is a timing diagram of the hot water/bath switching circuit and the input/output board of the microcomputer. A... Main control circuit C1/C2... Remote controller μ... Microcomputer Tl-T2... Input/output terminals 11-12... Signal line 15... Switching signal output terminal 23... Hot water/bath Switching circuit (switching means)

Claims (1)

[Claims] The main control circuit is provided with an input/output terminal to which a remote controller is connected, and a microcomputer, and a switching signal output terminal that outputs a switching signal whose polarity is switched in synchronization with the input/output of data to the microcomputer, and an input/output terminal in response to the switching signal. The remote control is equipped with a switching means for switching the polarity of the
A two-core remote control device for a bath water heater, etc., characterized in that two control circuits are connected to each signal line with opposite polarity.