JPS6064533A - Signal transmitter - Google Patents

Abstract

PURPOSE:To prevent mis-connection and also to attain the low cost by constituting the transmitter that an outdoor-installed equipment and a controller are connected by one connection line. CONSTITUTION:A signal is transmitted by connecting the outdoor-installed equipment 7 and the controller 10 with one connection line 8 and earthing parts 9, 11 respectively for the outdoor-installed equipment 7 and the controller 10 are used as signal return paths. When the outdoor-installed equipment 7 is a gas hot water supply equipment, the connection line 8 is connected between an MDD/ DEM17 demodulating a signal received from the controller 10 and an MDD/ DEM23 demodulation a signal from the gas hot-water supply equipment 7 and also modulating a carrier by using data and a control signal and transmitting the modulated result to the gas hot-water supply equipment 7.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is useful for remotely controlling residential equipment such as air conditioners, water heaters, and two-way system equipment, in which signal transmission lines between the equipment and the control device can be saved. It is about transformation.

Conventional configurations and their problems Conventionally, the housing equipment described in 111j has generally been installed outdoors to save indoor space and ensure safety, or because of the characteristics of the equipment.
Remote control is performed from a control device placed in a specific location that is easy to operate, such as in a separate room indoors or on the roof. In this case, the dark connection between the household equipment and the control device is almost entirely performed by multiple wiring lines for each control function, so the number of signal transmission lines increases in accordance with the number of control functions. For example, if we look at combustion-type hot water heating equipment, outdoor equipment includes a combustion part, a heat exchange part, a combustion detection part, a #J flat detector, etc. as an actuator part, a fuel control valve, a water flow control valve, etc. ,
It is composed of a blower, etc., and the control device is composed of an operation switch, a hot water temperature setting device, a hot water supply/heating selection switch, a hot water temperature display, an OK monitor display, etc. As shown in FIG. 1, outdoor equipment 1 is connected to a control device 3 using a multicore wire 2. As shown in FIG. Usually, the number of core wires of the multifilamentary wire 2 is required to be 6 to 8. Therefore, the following points can be raised as problems.

(1) Multifilamentary wires are expensive.

? ) Since the connection terminals of normal equipment are screw-tight terminals for each core wire, the more wires there are, the more the number of connection steps will be.

■ There are many connection errors during construction.

In order to alleviate the above problems, line saving was implemented, and the second
As shown in the figure, the configuration is such that outdoor equipment 4 is connected to a control device 6 through a two-core wire 5. In this method, how much power does the control device 6 have, and what power does the control device 6 and the outdoor equipment 4 have? supply. This method solves the following problems.

(1) Two-core cords are more expensive than single-wire cords.

(2) There is a polarity error during connection.

(3) It is necessary to add a non-polar circuit configuration for non-polarization.

OBJECTS OF THE INVENTION The present invention solves the conventional problems, and as shown in FIG. By simultaneously transmitting 18 copies and using it as a return path for all ground signals of the outdoor equipment 7 and control unit i'110, it is possible to use a single line instead of a multiple line.

Configuration of the Invention An example of a system configuration in which a gas water heater 7 installed outdoors is controlled by a control device 10 installed indoors is shown in Fig. 4.

The gas water heater 7 includes a microcomputer 16 and a gas flame detection sensor 1.
2, an amplifier and comparator 13, a hot water temperature detection sensor 14, and an A/D converter 15 that converts all signals of 14 into digital,
The igniter 1 pivot circuit 19, the igniter 20, the gas solenoid valve drive circuit 21, and the gas solenoid valve 21' modulate a high frequency carrier wave with data and control signals and send it to the control device 10, MO that demodulates the signal received from the control device 10
D/DEM 17 (!:, 411+ and microcontroller 16
The oscillator 18 used for the clock and the power supply port that supplies all the power to the above circuit! It consists of 1R22 swords and others.

The control wave @10 includes a communication control microcomputer 24, an operation control switch 29, a hot water temperature setting device 27, an A/'D converter 28 that digitizes the signal of 27, and an L that displays the hot water temperature.
ED 26, MOD/DEM 23 that demodulates the signal from the gas water heater 7, modulates the carrier wave with a monitor and control signal, and sends it to the gas water heater 7, and an oscillator that generates the carrier wave and a clock for the microcomputer 24. 25, and a power supply circuit 30 that supplies all power to the above circuit.

The gas water heater 72 and the control device 10 are connected by a control signal line 8, and the ground of one heat each time constitutes a transmission return path τ.

Description of Subexample 1 In the configuration of the invention described above, when the control device 102 and the gas water heater 7 are powered on, the microcomputers are reset and set to standby status. Oscillators 18 and 25 are
It is also used as a high frequency carrier wave and a clock for the microcomputers 18 and 24.

The input of the operation switch 29 and the signal value set by the temperature setting device 27 are A/D converted by the A/D converter 28,
When human input is applied to the microcomputer 24, the microcomputer 24 starts up and
l) Output the setting data signal once, +a OD/DE
Create modulated waves with M23! 1111r transmission line 8. It is demodulated by MOD/DEM 17, and human-powered
1 and the igniter drive circuit 21', and the gas electromagnetic flame 1 is activated.
21' The lid is opened and the igniter 20 makes an ignition sound. When the gas is ignited, the flame sensor 12 outputs a rock fire signal, and the amplifier/comparator 13 sends the microcomputer 16: ;if fire signal? input. If the microcomputer 16 detects the ignition signal,
After a certain period of time, turn off the igniter 20i and turn off the gas solenoid valve 21'.
maintain the open state. After the igniter 2° continues to ignite for a certain period of time, if the full ignition signal is not detected, the igniter 20 is completely stopped and the solenoid valve 21 is further closed.

On the other hand, when the ignition signal is detected, the microcomputer 16 outputs a combustion start signal, modulates the general transmission wave at the MOD/DEM 17, sends it to the signal transmission line 8, and sends it to the MOD/DEM 23.
The signal is demodulated and input to the microcomputer 24, which outputs an ignition display signal and lights up the LED 26. The set temperature data previously sent from the control device 10 to the gas water heater 7 and the output of the hot water temperature sensor 14 are A/D converted by the A/D converter 15.
All the converted signals are compared by the microcomputer 16, and when the values match, the lighting display of the LED 26 is continued to be sent from the gas water heater 7 to the control device 1°. If the set temperature and hot water temperature match, the microcomputer 16 sends a closing signal to the solenoid valve 21' to shut it off, so there is no flame signal, and a misfire signal is output, and the MOD/D
It modulates the EM with the general transmission all-misfire signal and sends it to the signal transmission line 8. The MOD/DEM 23 demodulates the misfire signal and inputs it to the microcomputer 24, and the microcomputer 24 outputs a light-off signal to turn off the LEDs 26.

The above process is repeated depending on the detected temperature of the hot water section.

The signal transmission line according to the present invention can generally be applied to the case where an outdoor unit of residential equipment is controlled from indoors, and when all residential equipment in another room is centrally controlled.

Effect of the invention (1) Signal transmission wiring can be done with one tree.

? ) There is no wiring error.

(3) Signal transmission power may be weak power.

(In the case of the high-frequency carrier wave method, electroacupuncture wave coupling can be expected even when the transmission line is disconnected, so there is less signal interruption.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a conventional multi-wire signal transmission, Fig. 2 is a block diagram of a conventional two-wire signal transmission, Fig. 3 is a block diagram of a signal transmission device according to an embodiment of the present invention, and Fig. 4 is a block diagram of a conventional two-wire signal transmission. FIG. 2 is a detailed block diagram of the same. 7...Outdoor installation equipment (single wire type), 8...
・Single wire, 9...Grounding (outdoor installed equipment side), 11
゛...Grounding (control device side), 10...Hooking device (single wire type), 16°'' ``°Microcomputer, 17...'''
-MOD/DEM (gas water heater side).

Claims (1)

[Claims] an electrical device and a control device that controls the electrical device;
A signal transmission device that uses one signal transmission line that connects the electrical equipment and the control device, and a return path that is grounded.