JPS62257225A - Signal multiplex transmission system - Google Patents

Abstract

PURPOSE:To obtain an inexpensive transmission/reception equipment with simple constitution by sending a power of half wave rectification and a pulse group signal while being overlapped without time division. CONSTITUTION:The power is converted into a prescribed voltage by a transformer 1 at a sending station and the voltage is subject half wave rectification by a half wave rectifying means 2 comprising diodes and the result is outputted. A signal such as a control signal B as a pulse group having a different patter from the kind of signal whose peak is less than the that of the power wave A is outputted, for example, three times or over from a signal forming circuit, and the signal is superimposed on the power subject to half wave rectification via a reverse flow preventing diode 3 and the result is outputted. A smoothing circuit 4 at the receiving station smoothes the power wave A, the signal is extracted as the power and the signal B is separated by a capacitor and the signal of the sending station is read depending on the form of pulse group by a signal discrimination circuit (not shown). In such a case, when the pulse group of the same pattern is confirmed continuously for the several number of times, the processing according to the instruction is executed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a signal multiplex transmission system for superimposing and transmitting control signals on a power line in a 1/2 monument such as a water heater.

(Prior art) In Sorai's signal multiplex transmission system, for example, the equity It ((4
As shown in Japanese Patent No. 5-34046, signals of the back machine type are superimposed on alternating current power and transmitted in a time-division manner.

In this case, it is necessary to control the timing of signal output, making the circuit complex. Additionally, there is a risk of malfunction due to timing errors.

(Object of the invention) The present invention is directed to the above! The purpose of this invention is to provide an iLj multi-city transmission system that can solve the above problems.

(Structure of the Invention) In order to achieve the above object, the present invention provides a remote control device consisting of a transmitting station and a plurality of receiving stations, in which the transmitting station half-wave rectifies AC power and sends the signal. - Or, a signal such as a control signal is changed several times as a pulse group with a peak value smaller than the power wave, each having a specific pattern, and is transmitted to the 1171 AC power at t[↑°, and at the receiving + a station, 1. (I This signal multiplex transmission system is characterized in that it is configured to execute processing according to the J command.

(Example) An embodiment of the present invention will be described below based on the drawings.

At the transmitting station, the output power is transformed to a predetermined voltage by a transformer (1), and then a half-wave rectifier (2) consisting of a diode is used.
), the signal is half-wave rectified and output as shown in FIG. 2 (1). In addition, the fJ shadow formation circuit (not shown) is connected to the second
As shown in Figure (2), the signal such as control No. 13 (B) has a different pattern depending on the type of No. 15, and the peak value is smaller than the power wave (A) as a pulse group, for example, if the signal such as No. 13 (B) is repeated three times or more. Output. This signal is converted into the half-wave rectified power via the backflow prevention diode (3)! It is output in 1i tatami. Therefore, the output of the transmitting station is shown in Figure 2 (3).
It becomes as shown in .

At the receiving station, the receiving number 13 is a flat r4 consisting of RC, LO, etc.
The power wave (A) is smoothed by circuit (4) (RC circuit here) and taken out as electric power, while the signal (B) is separated from the power wave (A) by a capacitor, and is divided into pulse groups by a signal discrimination circuit (not shown). Read the signal of the first station according to the shape of . At this time, if a group of pulses having the same pattern is confirmed consecutively (for example, three times), processing according to the command is executed. In this way, (J%
The shadow 'j of the pulse group being disturbed by Q is eliminated.

(Effects of the Invention) As described above, in the signal multiplex transmission system of the present invention, the component power of half-wave rectification and the signal of the pulse group are combined without time separation, etc., so complex timing control is required. No circuit is required, and an inexpensive transmitting/receiving device with a d tit configuration can be used. In addition, since the processing according to the signal is executed only when the signal is returned at the 918 station, the possibility of the pulse group being disturbed due to the overlap with the magnetic wave is eliminated, and accurate control.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being an electric circuit diagram and FIG. 2 being a transmission waveform diagram. (A)...Power wave (B)...-control signal (4)...Smoothing circuit

Claims (1)

[Claims] In a remote control device consisting of a transmitting station and a plurality of receiving stations, the transmitting station half-wave rectifies AC power and transmits it, while superimposing a control signal on the power wave as a pulse group with a peak value smaller than the power wave, A signal multiplex transmission system characterized in that a receiving station is provided with a smoothing circuit for smoothing power waves and separating the control signal from the power waves.