KR920000960B1 - Control circuit with power line - Google Patents

Abstract

The circuit controls electronic apparatuses more efficiently by providing a home bus controller circuit and an interface on the apparatus to be controlled. The circuit includes a home bus controller circuit (1), a telephone controlled interface circuit (8), and an interface circuit (9) for the apparatus to be controlled. The home bus controller circuit (1) outputs control signals to control an apparatus (12) to be controlled by processing externally supplied signals. The telephone controlled interface circuit (8) transmits the output of the circuit (1) to a power line. The interface circuit (9) for the apparatus to be controlled converts the output signals of the circuit (8) to signals suitable for controlling the apparatus.

Description

Device control circuit using power line as communication medium

1 is a circuit diagram of the present invention.

2 is a flow chart of the present invention.

* Explanation of symbols for the main parts of the drawings

1: Home Bus Controller (HBC: HOME BUS CONTROLLER) Circuit

2: operation switch drive circuit 3: voice synthesis transmitter

4 dual frequency multi-frequency circuit 5 inverter circuit

6,11: microprocess

7: D / A (DIGITAL / ANALOG) conversion circuit 8: Telephone control interface circuit

9: with controller interface

10: A / D (ANALOG / DIGIRAL) conversion circuit 12: Controller

SW: Operation switch TS: Transformer

CT ₁ -CT ₂ : Combined transformer BD: Bridge rectifier circuit

R ₁ -R ₃ : Resistor C ₁ -C ₃ : Capacitor

RL: Relay PHC: Photocoupler

The present invention relates to a system that can control various electronic devices from a telephone by using a power line (POWER LINER) as a communication medium, and in particular, a home bus controller circuit and an interface circuit are configured on the controller side. The present invention relates to a device for smoothly controlling electronic devices.

In general, in case of controlling various electronic devices by sending a control signal to a telephone from the outside, the home bus controller (HBC) circuit and the telephone control circuit were operated separately and used in the form of a separate cable. Not only did they lack precision in controlling electronic devices, but they could also cause malfunctions due to noise generated by installing cables separately.

In addition, the system that can control the electronic devices using the home bus control signal as the power line as a communication medium is used to increase the accuracy and speed. Therefore, it is not necessary to install a separate cable. However, since there is no interface circuit that mediates both data signals, many problems have arisen in order to smoothly control electronic devices.

The present invention is to solve the above-mentioned matters, by using a power line as a communication medium, as well as not requiring a separate line through the interface circuit for intermediating signals between the home bus controller circuit and the control device side It is an object of the present invention to more smoothly and accurately control the electronic device using a telephone from the outside.

Hereinafter, described in detail by the accompanying drawings as follows.

As shown in FIG. 1, the photocoupler PHC is connected to the primary side of the transformer TS to which the telephone control signal is applied through the bridge rectifying circuit BD, and the output is connected to the microprocessor 6 through the inverter circuit 5. The second side of the transformer TS is connected to the voice synthesis transmitter 3 and the dual tone multi-frequency circuit 4 through the operation switch SW, and the microprocessor 6 has a double tone multi-frequency circuit. 4) and a home bus controller circuit (1) connecting the voice synthesis transmitter (3) and the operation switch driver circuit (2), while the O / A conversion circuit (7) includes a resistor (R ₂ ) and a capacitor (C). ₃ ) the microcontroller (6) of the home bus controller circuit (1) is connected to the telephone control interface circuit (8) connected in parallel to the secondary side of the coupling transformer (CT ₁ ), and the capacitor (C ₂ ) is connected to the primary side. ) a / D conversion circuit 10 via a resistor (R ₃₎ to the secondary side of the transformer connected to an output terminal, and at the same time binding (CT ₂₎ of Connection, and to a hayeoseo connected to a control unit interface circuit (9) connected to an output of the circuit to the microprocessor 11 to the call control interface circuit (12). Referring to the operation and effects of the present invention made of the above configuration is as follows.

When the signal is output to the telephone to control the device from the outside, the rectified signal passes through the bridge rectifier circuit BD to operate the photocoupler PHC, so that the signal is applied to the inverter circuit 5 more smoothly. In the inverter circuit 5, the state is changed twice to obtain a stable output and then input to the microprocess 6.

At this time, in order to operate the operation switch SW connected to the secondary side of the transformer TS, the microprocessor 6 outputs a signal to the operation switch driving circuit 2.

That is, when a signal is applied to the base of the transistor Q through the resistor R ₁ , the transistor Q is turned on and the relay RL is operated so that the operation switch SW is connected to the ON state. At the same time, the voice synthesis transmitter (3) will send a note saying, "Ready to finish the code." Therefore, when the user hears the dial tone and transmits the password of the system, it is induced on the secondary side of the transformer (TS) and is applied to the dual tone multi-frequency circuit (4) via the movable switch (SW). If the transmitted password is matched, the voice synthesis transmitter 3 again transmits a voice of “Dash the code number of the device to be controlled” and the user commands the code number of the device to be controlled.

In addition, the dual tone multi-frequency circuit 4 receives the code number transmitted from the telephone and outputs the data to the microprocessor 6, and the microprocessor 6 receives the data signal and receives the D signal of the telephone control interface circuit 8. It is output to the / A conversion circuit 7 at which time the exchange of the transmit and receive data signals with the microprocessor 6 takes place.

That is, communication between the telephone control interface circuit 8 and the controller interface circuit 9 is carried out to the modem ICs (hereinafter referred to as MICs) in the D / A conversion circuit 7 and the A / D conversion circuit 10. In this case, the telephone control interface circuit 8 and the controller interface 9 both maintain the modem IC in an input state normally by the microprocesses 6 and 11.

At the time of output, however, the microprocessor 6 (11) adjusts the A pin (PIN) of the modem IC to make an output state and outputs data DATA. (After the output, readjust A pin again to make it into the input state.) Therefore, when a controller control signal enters the micro process 6 via the telephone in the telephone control interface circuit 8, the micro process 6 enters the D / The modem IC of the A conversion circuit 7 is made to the output state (A pin is selected as the output pin), and then the control signal of the corresponding device is sent to the C pin of the modem IC.

Then, the modem IC transmits the carrier frequency (modulation wave-FSK modulation method) carrying the signal wave to the power line through the D pin. The modulated wave loaded on the power line is inputted to the modem IC CD pin of the controller interface circuit 9 in which the communication sub-frequency bands are matched with each other.

(Since it is normally input state)

When only the signal wave is extracted (demodulated) from the modem IC and transmitted to the microprocessor through the B pin, the microprocessor 11 controls the device.

Accordingly, the D / A conversion circuit 7 converts the digital signal applied from the microprocessor 6 into an analog signal for transmission through the power line, and then passes the resistor R ₂ and the coupling transformer CT ₁ to control the controller. Is applied to the interface circuit 9.

The analog signal loaded through the power line is input to the A / D conversion circuit 10 through the coupling transformer CT ₂ and the resistor R ₃ , and is a suitable signal capable of driving the controller by the microprocess 11. The analog signal is converted into a digital signal, and therefore, the microprocessor 11 controls the device corresponding to the code number transmitted from the telephone.

Referring to the flowchart of the present invention shown in FIG. 2, first, when the user makes a phone call to control the device from the outside, the operation of the system is started (step 101), and the microprocessor 6 of the home bus controller circuit 1 is started. After detecting the input current and 3 times of beeping (step 102), when the system is ready for operation, the message “The preparation is finished, please give the password” is released from the voice synthesis transmitter 3 (step 103). After confirming the above information with the handset, the password is sent (step 104).

At this time, after confirming the password of the system itself and the password inputted from the outside through the microprocessor 6 (step 104), if the two do not match, the operation of the home bus controller 1 is stopped.

On the other hand, if the password of the system itself matches the password input from the outside, the microprocessor 6 applies a signal to the control unit to make it operate (step 106). When the code number of the device to be controlled by telephone is inputted, The microprocessor 6 judges the number of times to repeat the operation 108 and stops the operation. (109) When the code number transmitted to the power line is recognized by each unit (112) and a code number corresponding to the corresponding device is inputted, The device is operated 114, and if the code numbers do not match, the operation is stopped.

As described above, the present invention is to separate the home bus controller circuit (HBC) circuit (1) and other control circuits in the case of controlling various home appliances from the outside by using a power line (POWER LINE) as a communication medium. Not only does the noise generated by installing and operating the line eliminate the complexity, but also the interface circuit (8) (9) for smooth transmission and reception of data between the controller (12) and the microprocessor (6). By adding, it is possible to add speed of the operation and response speed of the correct controller 12.

Claims (4)

A home bus controller circuit 1 for processing a signal applied from the outside and outputting a control signal for controlling the controller 12, and a phone control for transmitting the output of the home bus controller circuit 1 to a power line. A power line consisting of an interface circuit 8 and a controller interface circuit 9 for converting a signal of the telephone control interface circuit 8 applied through a power line into a signal for driving the controller 12. Device control circuit using (POWER LINE) as a communication medium. According to claim 1, Bridge rectification circuit (BD), Photocoupler (PHC) on the primary side of the transformer (TS) in order to recognize the initial signal applied to the external microprocessor 6 of the home bus controller circuit (1) ), And a device control circuit using a power line consisting of an inverter 5 as a communication medium. The power line (POWER) according to claim 1, comprising a switch (SW) for controlling communication with the outside and an operation switch driving circuit (2) for driving the switch (SW) in the home bus controller circuit (1). Device control circuit using LINE) as a communication medium. The device control circuit according to claim 3, wherein the switch (SW) uses a power line (POWER LINE) formed at one end of the secondary side of the transformer (TS) as a communication medium.

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