TW201351903A - Power line communication control system - Google Patents

Abstract

A power line communication control system is coupled between a power line and a load, wherein the power line carries an AC telecommunication signal from the Mains. The power line communication control system includes a control unit, a coupling circuit, and an insulation element. The control unit generates a power-line communication carrier wave, the coupling circuit is electrically connected between the control unit and the load, and couples and transmits the power line communication carrier wave to the load, and the insulation element prevents the AC telecommunication signal from intefering the power-line communication carrier wave signal between the control unit and the load, as well as preventing the power-line communication carrier wave signal from interfering other communication equipment.

Description

Power line communication control system

The invention relates to a power line communication control system, in particular to a power line communication control system which has both power consumption and compatibility with existing electrical loads.

The power line communication control system is a popular control technology in recent years. The advantage is that it can be controlled by using the existing power line. However, when used to control a light-emitting device or a general electric appliance, there are the following problems:

1. The anti-interference ability is weak: if the mains and power line communication carriers are transmitted at the same time, the power line communication carrier is easily interfered by the noise generated by other electrical equipment.

2. Poor compatibility with existing electrical equipment: If the mains and power line communication carriers are transmitted at the same time, the overall power factor of the electrical equipment will have a great impact. The design of existing electrical equipment, such as dimming circuits, must be greatly modified to overcome this. problem.

3. Poor energy saving effect: The equivalent impedance of the general indoor power line system is about 2 to 10 ohms. The traditional power line communication modem (PLC modem) transmits a large amount of output current in such a low impedance environment, and the overall power consumption is high. .

Therefore, how to realize the power line communication control system to improve anti-interference ability, compatibility with existing electrical equipment and improve energy-saving effect is an important issue.

Accordingly, it is an object of the present invention to provide a power line communication control system that is both power efficient and compatible with existing electrical loads.

The power line communication control system of the present invention is coupled between a power line and a load, the power line carrying an alternating current signal from the mains, wherein the power line communication control system has a basic controller, and the basic controller includes a a control unit, a coupling circuit and an isolation component, the control unit generates a power line communication carrier; the coupling circuit is electrically connected between the control unit and the load to couple and transmit the power line communication carrier to the load; the isolation component is electrically connected to the power line and Between the loads, the AC signal is prevented from interfering with the power line communication carrier signal between the control unit and the load, and the power line communication carrier signal is prevented from interfering with other communication devices.

Preferably, the isolation element is a directional coupler, a large inductive component, a choke inductor, or a low pass filter.

In the power line communication control system of the second embodiment of the present invention, the isolation element is a switching element electrically connected between the power line and the load; the control unit controls the switching element to be turned off alternately during an off period And turning on during the conducting period, so that the alternating current signal turns on and outputs an alternating voltage carrier to the load during the conducting period, and does not turn on the alternating current signal and transmits a power line communication carrier to the load during the off period.

Preferably, the switching element is a three-terminal bidirectional controllable switch. The control module may further include a wireless transmission unit, a control unit and a coupling unit. The wireless transmission unit is electrically connected to the control unit and receives a wireless signal carrying a control command to the control unit, so that the control unit is based on the control unit. The control command forms the power line communication carrier, and the power line communication carrier is transmitted by the coupling unit to the load.

Preferably, the power line communication control system further includes a plurality of basic controllers and a total controller, wherein the total controller is connected to each of the basic controllers by the power line connection, so that the switching elements are controlled by the overall controller. .

Preferably, the power line communication control system further includes a plurality of basic controllers, a power measuring instrument and a main switch, and the power measuring instrument cooperates with the switching power of the main switch to monitor the power consumption of each load.

The power line communication control system of the third embodiment of the present invention is coupled between a power line and a load, the power line carries an alternating current signal from the mains, and the power line communication control system includes a main control module and a pair of control modes. group. The main control module has a switching element, a first control unit and a first coupling unit. The switching element is electrically connected between the power line and the load. The first control unit controls the switching element to alternate with a cutoff. During the off period and during the on period, the alternating current signal is turned on during the on period, and the alternating current signal is not turned on during the off period but a power line communication carrier is outputted, and the first coupling unit outputs the sub control Module. The sub-control module includes a branch line, a second coupling circuit, a conversion circuit and a second control unit; the second coupling circuit And the conversion circuit respectively receives the integrated signal; the conversion circuit converts a conversion voltage required by the load to the load by using an AC voltage carrier of the integrated signal; and the second coupling circuit couples the power line from the integrated signal The communication carrier is supplied to the second control unit to control the related operation of the load.

Preferably, the main control module further includes a wireless transmission unit, the wireless transmission unit is electrically connected to the first control unit and receives a wireless signal carrying a control command to the first control unit, so that the first control The unit forms the power line communication carrier according to the control instruction. The conversion circuit is a rectifier circuit.

The power line communication control system of the present invention is coupled between a power line and a load, the power line carrying a DC signal; wherein the power line communication control system has a basic controller, and the basic controller includes: a control unit, Generating a power line communication carrier; a coupling circuit electrically connected between the control unit and the load to couple and transmit the power line communication carrier to the load; and an isolation component electrically connected to the power line and the load In the meantime, the DC signal is prevented from interfering with the power line communication carrier signal between the control unit and the load, and the power line communication carrier signal is prevented from interfering with other communication devices.

Preferably, the isolation element is a directional coupler, a large inductive component, a choke inductor, or a low pass filter.

The power line communication control system of the present invention has the following effects:

1. Strong anti-interference ability: The power line communication carrier of the power line communication control system of the present invention is only limited to the isolation component and the electrical load. Between, electromagnetic interference can be minimized, while avoiding this power line communication carrier signal interferes with other communication devices.

2. Good compatibility with existing electrical equipment: General electrical equipment utilizes the power line communication control system of the present invention, and if the isolation control element of the switch control mode can transmit the power line communication carrier at the instant of disconnection near the zero crossing point of the commercial alternating current It does not have much influence on the overall power factor of electrical equipment, so it has good compatibility with the control circuit of existing electrical equipment.

3. The energy saving effect is good: the power line communication control system of the present invention is that if the isolation control element of the switch control mode is disconnected from the power system before transmitting the power line communication carrier, the conductor impedance at the moment of transmission is relatively high, thereby reducing the overall power consumption. It is a big help for energy-saving systems.

100, 200, 500, 700‧‧‧Power Line Communication Control System

101, 501‧‧‧ power line

1‧‧‧Basic controller

10‧‧‧Control unit

11, 51, 814‧‧‧ isolation components

110‧‧‧Control Module

12‧‧‧Coupling circuit

13, 53‧‧‧ Wireless transmission unit

201‧‧‧AC signal

202, 401‧‧‧ AC voltage carrier

203, 402‧‧‧Power line communication carrier

204‧‧‧Output current

3, 7‧‧‧ load

31‧‧‧ Output

400‧‧‧ integrated signal

4‧‧‧Main control circuit

41‧‧‧Master controller

42‧‧‧Coupling circuit

5‧‧‧Main control module

50‧‧‧First Control Unit

51‧‧‧Main switch circuit

52‧‧‧First coupling unit

53‧‧‧Wireless transmission unit

6‧‧‧Sub Control Module

60‧‧‧Second Control Unit

61‧‧‧Second coupling circuit

62‧‧‧Transition circuit

65‧‧‧Power measuring instrument

8‧‧‧Remote control

81‧‧‧Sub Control Circuit

811‧‧‧Sub Controller

812‧‧‧Input side coupling circuit

813‧‧‧Output side coupling circuit

82‧‧‧Controlled device

Other features and advantages of the present invention will be apparent from the embodiments of the present invention. FIG. 1 is a system block diagram illustrating the power line communication control system of the present invention. FIG. 2 is a diagram illustrating the power line communication control system of the present invention. FIG. 3 is a circuit block diagram illustrating another embodiment of the power line communication control system of the present invention; FIG. 5 is an explanatory diagram of the circuit diagram of the power line communication control system of the present invention; 4 AC signal, AC voltage carrier and integrated signal of power line communication carrier, and waveform diagram of output current; 6 is a circuit block diagram showing still another embodiment of the power line communication control system of the present invention; FIG. 7 is a waveform diagram illustrating an integrated signal of the AC voltage carrier and the power line communication carrier of FIG. 6; and FIG. 8 is a diagram illustrating the power line communication control of the present invention. A circuit block diagram of still another embodiment of the system.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

The present invention will be described in detail with reference to the accompanying drawings, in which: FIG.

Referring to FIG. 1 and FIG. 2, the power line communication control system 100 of the present invention is coupled between a power line 101 and a load 3, and the power line 101 carries an AC signal 201 from the mains. The power line communication control system 100 has a basic controller 1 including an isolation component 11 and a control module 110. The control module 110 has a control unit 10, a coupling circuit 12 and a wireless transmission unit 13. And receiving a wireless signal control load 3 of a remote controller 8.

The wireless transmission unit 13 is electrically connected to the control unit 10, and can receive the wireless signal from the remote controller 8 to the control unit 10. The wireless signal carries a control command, and the control unit 10 forms a power line communication carrier 203 according to the control command, and Coupling unit 12 couples and transmits the power line The carrier 203 is preloaded to the load 3. In other embodiments, the wireless transmission unit 13 may be replaced by an Ethernet transmission unit (eg, a wireless network interface), and the network transmission unit receives the network signal carrying the control command to the control. Unit 10 is also within the scope of the invention.

The control unit 10 generates a power line communication carrier 203. The coupling circuit 12 is electrically connected between the control unit 10 and the load 3 to couple and transmit the power line communication carrier 203 to the load 3.

Referring to FIG. 2, the isolation component 11 is electrically connected between the power line 101 and the load 3, and blocks the power line communication carrier 203 to prevent the AC signal 201 from interfering with the power line communication carrier signal 203 between the control unit 10 and the load 3. Avoid this power line communication carrier signal 203 from interfering with other communication devices. Preferably, the isolation component 11 can be, but is not limited to, a directional coupler, a large inductive component, a choke inductor, or a low pass filter, as long as it can isolate (block) the high frequency. The power line communication carrier signal 203 (e.g., 300 kHz), but active or passive components that can pass low frequency signals (e.g., 60 Hz) are within the scope of the present invention.

Referring to FIG. 3, the input voltage Vin of FIG. 1 is an alternating current signal 201, and the output voltage Vout of an output terminal 31 (FIG. 2) electrically connected to the isolation component 11 and the coupling circuit 12 is supplied to the load 3, and The output voltage Vout of the output terminal 31 is an alternating current signal 201 and a power line communication carrier signal 203. It should be noted that the alternating current signal 201 may appear elsewhere except for the peak or zero crossing point. There is now a limit at the peak or zero crossing point.

It is added that if the power line 101 of FIG. 2 is carried When the AC signal 201 is changed to a DC signal (for example, a DC power supply for a vehicle), an appropriate isolation component can be selected using a circuit structure and principle similar to that of FIG. 2 to prevent the DC signal from interfering with the power line communication between the control unit 10 and the load 3. The carrier signal 203 prevents the power line communication carrier signal 203 from interfering with other communication devices.

Referring to FIG. 4, in another embodiment of the present invention, the power line communication control system 200 is coupled between a power line 101 and a load 3, and can receive a wireless signal of a remote controller 8 to control the switching action of the load 3.

The power line 101 includes a live line (L) and a ground line (N), and the live line carries an alternating current signal 201 from the mains. The load 3 is an electronic light-emitting device that can be controlled by the power line communication carrier, or other such as an electric meter or electric power. Electronic equipment such as modules.

The power line communication control system 200 has a basic controller 1 including an isolation component 11 and a control module 110. The control module 110 includes a wireless transmission unit 13, a control unit 10, and a coupling unit 12. The principle of operation of each component is described below.

The isolation component 11 is electrically connected between the power line 101 and the load 3. In this embodiment, a three-terminal bidirectional controllable switch can be generated by the control module 110 to generate an AC voltage carrier 202.

The wireless transmission unit 13 is electrically connected to the control unit 10, and can receive the wireless signal from the remote controller 8 to the control unit 10. The wireless signal carries a control command, and the control unit 10 forms a power line communication carrier 203 according to the control command, and The coupling unit 12 couples and transmits the power line communication carrier 203 to the load 3. In other embodiments, the wireless transmission list can also be The element 13 is replaced by an Ethernet transmission unit (e.g., a wireless network interface), and the network transmission unit receives the network signal carrying the control command to the control unit 10, which is also within the scope of the present invention.

Referring to FIG. 5, and in conjunction with FIG. 4, the control unit 10 can control the isolation element 11 to be turned off alternately during an off period t1 and during an on period t2, so that the alternating current signal 201 is turned on during the on period t2 to form an alternating voltage carrier 202 for output. The load 3 is such that the alternating current signal 201 is not turned on during the off period t1 and the power line communication carrier 203 is transmitted to the load 3; therefore, the load 3 can receive the integrated signal of the alternating voltage carrier 202 and the power line communication carrier 203, and the integrated signal The transmission time of the power line communication carrier 203 is the input current 204 received by the load 3 near the zero crossing point of the AC voltage carrier 202.

Referring to FIG. 6, in another embodiment of the present invention, the power line communication control system 500 is coupled between a power line 501 and a load 7, and can receive a wireless signal of a remote controller 8 to regulate the switching action of the load 7. The power line 501 includes a live line (L) and a ground line (N), and the live line carries an alternating current signal from the mains, and the load 7 is an electrical device that can be controlled by the power line communication carrier. The power line communication control system 500 includes a main control module 5 and a sub-control module 6. The principle of each component is as follows.

The main control module 5 has a first control unit 50, an isolation component 51, a first coupling unit 52 and a wireless transmission unit 53. The isolation component 51 is electrically connected between the power line 501 and the sub-control module 6, and communicates. The electrical signal can be controlled by the first control unit 50 to generate an AC voltage carrier 401; the wireless transmission unit 53 is electrically connected to the first control unit 50 and receives the The wireless signal having the control command is sent to the first control unit 50, so that the first control unit 50 forms a power line communication carrier 402 according to the control command; therefore, the secondary control module 6 can receive the AC voltage carrier 401 and the power line communication carrier. The integrated signal 400 of 402.

The sub-control module 6 includes a second control unit 60, a second coupling circuit 61 and a conversion circuit 62. The second coupling circuit 61 and the conversion circuit 62 respectively receive the integrated signal 400. The conversion circuit 62 is a rectifier circuit. The AC voltage carrier 401 of the integrated signal converts the conversion voltage 403 required by the load 7 (eg, rectifies the AC power to a DC power supply) and supplies it to the load 7; the second coupling circuit 61 couples the power line communication carrier 402 from the integrated signal 400. The second control unit 60 controls the related operation of the load 7; for example, automatic timing on or automatic timing off.

Referring to FIG. 7 and in conjunction with FIG. 6, the first control unit 50 can control the isolation element 51 to be turned off alternately during an off period t1 and during an on period t2, so that the alternating current signal turns on the output AC voltage carrier 401 during the on period t2, and The off-period t1 does not conduct the AC signal but outputs the power line communication carrier 402. Then, the first coupling unit 52 outputs an integrated signal 400 including the AC voltage carrier 401 and the power line communication carrier 402 to the sub-control module 6.

Referring to FIG. 8, a power line communication control system 700 according to still another embodiment of the present invention includes a main control circuit 4 and a sub-control circuit 81 controlled by the main control circuit 4, the sub-control circuit 81 for regulating a controlled device. The switching function of 82, and the number of sub-control circuits 81 and controlled devices 82 may be a plurality.

The live line of the power line 101 carries an alternating current signal from the mains to supply power to the main control circuit 4, the sub-control circuit 81 and the controlled device 82. The controlled device 82 is a lamp or non-light-type electric appliance that can be controlled by the power line communication carrier. .

The main control circuit 4 includes a main controller 41 and a coupling circuit 42. The main controller 41 forms a power line communication carrier according to a control command, and the coupling unit 42 couples and transmits the power line communication carrier to the power line 101. The sub control circuit 81 The controller 811 includes an input side coupling circuit 812, an output side coupling circuit 813, and an isolation component 814. The sub controller 811 is electrically connected to the power line 101 by the input side coupling circuit 812 and the output side coupling circuit 813. Between the controlled devices 82, and the isolation device 814 is electrically connected between the power line 101 and the controlled device 82, the sub-controller 811 controls the isolation device 814 to be turned on alternately during an off period and during an on period to enable an alternating current signal. During the conduction period, the AC voltage carrier is turned on to output to the controlled device 82, and the AC signal is not turned on during the OFF period and the power line communication carrier is transmitted to the controlled device 82.

In addition, the power control device 700 may further include a main switch circuit 51 and a power measuring instrument 65 electrically connected to the main switch circuit 51. The power measuring instrument 65 cooperates with the switching power of the main switch circuit 51, if the power line 101 is electrically connected. The plurality of controlled devices 82, the power measuring instrument 65 can monitor the power consumption of each controlled device 81 by the power line communication control method of the present invention, and convert the data into a reference for the user, so that the utility of monitoring the power consumption can also be achieved. .

In summary, the power line communication control system 100 of the present invention, 200, 500, 700 have the following advantages:

1. Compatibility with existing electrical equipment: General electrical equipment can utilize the power line communication control system 100, 200, 500, 700 of the present invention, and transmit power line communication carrier to the load of the electrical equipment 3, 7 while using the commercial alternating current. Or the controlled device 82, the overall power factor does not have much influence, so it has good compatibility with the control circuit of the existing electrical equipment.

2. Strong anti-interference ability: the isolation element 11 of the power line communication control system 100 of the present invention does not pass the power line communication carrier 203 but is supplied to the load 3 through the alternating current signal 201; the isolation element 11 of the power line communication control system 200, 500, 700 is The power line communication carrier is transmitted during the cutoff period of the mains AC disconnection, so the power line communication carrier is limited only between the isolation elements 11, 51, 814 and the load 3, 7 of the appliance or the controlled device 82, and the electromagnetic interference can be minimized. At the same time, avoid the power line communication carrier signal from interfering with other communication devices.

3. The energy saving effect is good: the power line communication control system 100, 200, 500, 700 of the present invention is immune to the interference generated by the alternating current system when transmitting the power line communication carrier, thereby reducing the overall communication power consumption, which is a great help for saving energy. It is beneficial to achieve the object of the present invention.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.

100‧‧‧Power Line Communication Control System

101‧‧‧Power line

1‧‧‧Basic controller

10‧‧‧Control unit

12‧‧‧Coupling circuit

11‧‧‧Isolation components

3‧‧‧load

Claims (13)

A power line communication control system is coupled between a power line and a load, the power line carrying an alternating current signal from the mains; wherein the power line communication control system has a basic controller, the basic controller includes: The control unit generates a power line communication carrier; a coupling circuit electrically connected between the control unit and the load to couple and transmit the power line communication carrier to the load; and an isolation component electrically connected to the power line and Between the loads, the AC signal is prevented from interfering with the power line communication carrier signal between the control unit and the load, and the power line communication carrier signal is prevented from interfering with other communication devices. The power line communication control system according to claim 1, wherein the isolation element is a directional coupler, a large inductance element, a choke inductor, or a low pass filter. The power line communication control system of claim 1, wherein the isolation component is a switching component electrically connected between the power line and the load; the control unit controls the switching component to alternate with a cutoff The period is turned off and turned on during an on period, and the alternating current signal is turned on to output an alternating voltage carrier to the load during the conducting period, and the alternating current signal is not turned on during the off period and the power line communication carrier is transmitted to the load. The power line communication control system according to claim 3, wherein the switching element is a three-terminal bidirectional controllable switch. The power line communication control system of claim 1, 2, 3 or 4, wherein the control module further comprises a transmission unit electrically connected to the control unit and receiving a signal carrying a control command And the control unit is configured to form the power line communication carrier according to the control instruction, and the power line communication carrier is transmitted by the coupling unit to the load. The power line communication control system according to claim 5, wherein the transmission unit is a wireless transmission unit or a network transmission unit, and the wireless transmission unit receives a wireless signal carrying the control instruction to the control unit, The network transmission unit receives the network signal carrying the control command to the control unit. A power line communication control system is coupled between a power line and a controlled device, the power line carrying an alternating current signal from a mains, the power line communication control system including a main control circuit and a control by the main control circuit a sub-control circuit; the main control circuit includes a main controller and a coupling circuit, the main controller forms a power line communication carrier according to a control command, and the coupling unit couples and transmits the power line communication carrier to The power line; the sub-control circuit includes a sub-controller, an input-side coupling circuit, an output-side coupling circuit, and a switching component; the sub-controller is electrically connected to the output-side coupling circuit and the output-side coupling circuit Between the power line and the controlled device, and the switching element is electrically connected between the power line and the controlled device; the sub controller controls the switching element Alternating between an off period and an on period, the alternating current signal is turned on during the on period to form an alternating voltage carrier and output to the controlled device, and the alternating current signal is not turned on during the off period and the transmission is performed. The power line communication carrier is applied to the controlled device. The power line communication control system according to claim 7, wherein the number of the controlled devices is a plurality, and the power line communication control system further comprises a power measuring instrument and a main switch circuit, the power measuring instrument The power consumption of each controlled device is monitored in a power line communication control manner in conjunction with the switching power of the main switch circuit. A power line communication control system is coupled between a power line and a load, the power line carrying an AC signal from a mains, the power line communication control system comprising a main control module and a control module; wherein: The main control module has a switching element, a first control unit and a first coupling unit. The switching element is electrically connected between the power line and the load. The first control unit controls the switching element to alternate with a cutoff. The period is turned off and turned on during a turn-on period, so that the alternating current signal is turned on to output an alternating voltage carrier during the conducting period, and the alternating current signal is not turned on during the off period but a power line communication carrier is outputted by the first coupling unit output. An integrated signal including the AC voltage carrier and the power line communication carrier is provided to the sub control module; and the sub control module includes a second coupling circuit, a conversion circuit and a second control unit; the second coupling circuit and The conversion circuit respectively receives the integrated signal; the conversion circuit utilizes an AC voltage of the integrated signal The carrier converts the conversion voltage required by the load and supplies it to the load; the second coupling circuit couples the power line communication carrier from the integrated signal to the second control unit to control the related operation of the load. The power line communication control system of claim 9, wherein the main control module further comprises a wireless transmission unit electrically connected to the first control unit and receiving a wireless signal carrying a control command And the first control unit is configured to form the power line communication carrier according to the control instruction. The power line communication control system according to claim 9 or 10, wherein the conversion circuit is a rectifier circuit. A power line communication control system is coupled between a power line and a load, the power line carrying a DC signal; wherein the power line communication control system has a basic controller, the basic controller includes: a control unit, generating a power line communication carrier; a coupling circuit electrically connected between the control unit and the load to couple and transmit the power line communication carrier to the load; and an isolation component electrically connected between the power line and the load The DC signal is prevented from interfering with the power line communication carrier signal between the control unit and the load, and the power line communication carrier signal is prevented from interfering with other communication devices. The power line communication control system according to claim 12, wherein the isolation element is a directional coupler, a large inductance element, a choke inductor, or a low pass filter.