Power supply system and control method

Abstract

The invention provides a power supply system and a control method, the power supply system comprises a power supply line, a carrier signal emitter, a carrier signal receiver and an on-off device, the carrier signal emitter is electrically connected with the power supply line, and the carrier signal receiver is electrically connected with the power supply line and the on-off device; the carrier signal transmitter transmits a high-frequency carrier control signal to the power supply line, the high-frequency carrier control signal is transmitted to the carrier signal receiver through the power supply line, and the carrier signal receiver controls the response state of the on-off device according to the received high-frequency carrier control signal. Transmission of the high-frequency carrier control signals is carried out through the power line carrier by utilizing the power supply line, so that the usage amount of power supply wires and wire laying auxiliary materials can be saved, the wiring design and construction are greatly simplified, circuit fault points and the fault occurrence rate are reduced, and the method has the outstanding advantages of saving cost, improving wiring construction efficiency and the like.

Description

Technical Field

[0001] This invention relates to the fields of power supply system and control design and wiring construction, and in particular to a power supply system and control method. Background Technology

[0002] Existing power supply systems, such as Figure 1 As shown, this power supply method requires at least the installation of live and neutral wires in the design and construction of power supply lines. Various electrical terminal devices, such as lighting fixtures, air conditioners, refrigerators, water heaters, electric curtains, and washing machines, are connected to the power supply line via power supply wires, control switches, and other circuit components. Therefore, the power supply control of each terminal device is achieved by connecting an independent control switch in series with its corresponding terminal device. That is, one control switch can only control the terminal device connected to it, including several terminal devices connected in series within the same circuit. For example, when several lighting fixtures are connected in series on the same power supply line, only one control switch can simultaneously power on or off all the lighting fixtures connected in series in that circuit, thus achieving centralized and unified control of those lighting fixtures.

[0003] While the existing power supply control methods described above are convenient and reliable, the sheer volume of power supply wires required stems from the fact that each type of terminal device on the same power line is connected via an independent power supply conductor. Consequently, the amount of auxiliary materials needed for power supply wire installation (e.g., conduit, clamps, supports, etc.) also increases significantly. Furthermore, the more terminal devices there are, the more power supply wires, control switches, and installation materials are required. Increased power supply wire usage not only raises procurement costs but also complicates wiring design, inevitably increasing the amount of installation work and directly leading to a substantial increase in construction costs (including labor and installation material costs). Moreover, a more complex wiring design increases the likelihood of circuit failures, resulting in a double decrease in power supply stability and reliability.

[0004] The old community reconstruction in cities and towns is a major livelihood project and development project, which has great significance in meeting the needs of the people for a better life, promoting the expansion of domestic demand, promoting urban renewal and development, and promoting the transformation of economic development, and encouraging the comprehensive use of physical, technical and human defense measures to meet safety needs, and timely promotion of new technologies, new products and new methods, and the use of economic and environmentally friendly technologies, processes, materials and products. The relevant pipeline reconstruction plan of professional operating units such as power, water supply and gas supply should be actively connected with the planning and planning of old community reconstruction in cities and towns, and implemented simultaneously. The target is to start the reconstruction of 39,000 old communities in cities and towns in 2020, involving nearly 7 million households.

[0005] If the economic cost is calculated, the same terminal equipment, assuming that the power supply wire uses a copper core wire with a cross-sectional area of 6 square millimeters, for every additional meter of the power supply wire, the procurement cost of the power supply wire needs to be increased by about 6-8 yuan, and the construction cost of the power supply wire (including labor cost and construction and layout of auxiliary materials) needs to be increased by about 20 yuan. If the above-mentioned working target of starting the reconstruction of 39,000 old communities in cities and towns in 2020, involving nearly 7 million households, is calculated, and each household increases the wiring by 10 meters, and each meter of wiring is calculated at 6 yuan, the procurement cost of the power supply wire needs to be increased by about: 6 yuan / meter x 10 meters / house x 7 million households = 420 million yuan, and accordingly, the construction cost of the power supply wire needs to be increased by about: 20 yuan / meter x 10 meters / house x 7 million households = 1.4 billion yuan, therefore, the total cost needs to be invested by about: 420 million yuan + 1.4 billion yuan = 1.82 billion yuan. Not only does it cause a large amount of waste of copper core wire (including copper, aluminum and other metal wires) and wire layout auxiliary materials (such as threading pipe, pipe clamp, support and hanger), but also leads to a substantial increase in wiring construction cost, which is not conducive to the application and promotion of green and environmentally friendly economy. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a power supply system and a control method to save the application cost of power supply wires and improve the wiring construction efficiency of the power supply system.

[0007] The technical problem to be solved by the present application is solved by the following technical solution: a power supply system, comprising a power supply line, a carrier signal transmitter, a carrier signal receiver and a on-off device, the carrier signal transmitter is electrically connected with the power supply line, the carrier signal receiver is electrically connected with the power supply line and the on-off device respectively; the carrier signal transmitter transmits a high-frequency carrier control signal to the power supply line, the high-frequency carrier control signal is transmitted to the carrier signal receiver through the power supply line, and the carrier signal receiver controls the on-off device according to the received high-frequency carrier control signal.

[0008] Further, the carrier signal transmitter and the carrier signal receiver are respectively provided with a plurality of carrier signal transmitters, the plurality of carrier signal transmitters are connected in parallel through the power supply line, the plurality of carrier signal receivers are also connected in parallel through the power supply line, and any carrier signal transmitter and any carrier signal receiver are also connected in parallel through the power supply line.

[0009] Further, the carrier signal transmitter comprises a transmitting end processing module and a carrier high-frequency signal modulation generation module, the transmitting end processing module is used for analyzing control instructions and address code information, the control instructions and the address code information are modulated and processed by the carrier high-frequency signal modulation generation module after being analyzed by the transmitting end processing module to form the high-frequency carrier control signal.

[0010] Further, the high-frequency carrier control signal output by the carrier signal transmitter is output to the power supply line through a transmitting end differential coupling module.

[0011] Further, the transmitting end differential coupling module comprises a capacitor C1 and a transformer T2, and the capacitor C1 is connected in series in the high-voltage end circuit of the transformer T2.

[0012] Further, the high-frequency carrier control signal output by the carrier signal transmitter is first output to a signal amplifier module, and then output to the power supply line through the transmitting end differential coupling module after being amplified by the signal amplifier module.

[0013] Further, the carrier signal receiver comprises a receiving end address module, a receiving end control module and a carrier high-frequency signal receiving and demodulation module, after the carrier high-frequency signal receiving and demodulation module receives the high-frequency carrier control signal output by the carrier signal transmitter from the power supply line, the address code information in the high-frequency carrier control signal is demodulated and compared with the address code information in the receiving end address module; if the verification is successful, the receiving end control module outputs the control instruction; if the verification fails, the receiving end control module does not output the control instruction.

[0014] Further, the high-frequency carrier control signal output by the carrier signal transmitter is first output to a receiving end differential coupling module through the power supply line, and the high-frequency carrier control signal output by the receiving end differential coupling module is then processed by a filter module and output to the carrier high-frequency signal receiving and demodulation module.

[0015] Further, the filter module comprises a resistor R412, a capacitor C49, a capacitor C410 and an inductor L43, the resistor R412 and the capacitor C49 are connected in parallel, the capacitor C49 and the capacitor C410 are connected in parallel, and the inductor L41 and the inductor L42 are connected in series on the parallel branches respectively, the capacitor C410 and the inductor L43 are connected in parallel, and the capacitor C411 and the capacitor C412 are connected in series on the parallel branches respectively, the inductor L43 is connected in series with the capacitor C413 and the capacitor C414 respectively, the capacitor C413 is connected in series with the resistor R413 and the resistor R415 respectively, the resistor R413 is grounded, the capacitor C414 is connected in series with the resistor R414 and the resistor R416 respectively, and the resistor R414 is grounded.

[0016] A power supply system control method, the power supply system is as described above, wherein the carrier signal transmitter and the carrier signal receiver utilize the power supply line and transmit the high-frequency carrier control signal through the power line carrier.

[0017] Compared with the prior art, the beneficial effects of the present application are: by adopting the technical scheme of the present application, the use amount of power supply conductors and conductor layout accessories (such as threading pipes, pipe clamps, support hangers, etc.) of the power supply system can be greatly saved, thereby saving the use amount of copper, aluminum and other metals used for manufacturing power supply conductors, thereby greatly saving the procurement cost of power supply conductors and conductor layout accessories; in addition, the wiring design and construction of the power supply system can also be greatly simplified, and the circuit fault points and failure rate can be reduced, thereby effectively improving the power supply stability and reliability of the power supply system; further, through the wiring simplification of the power supply line, the construction process of the power supply line is also correspondingly simplified, thereby greatly improving the wiring construction efficiency of the power supply system and saving the wiring construction cost of the power supply system. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The principle design drawing of the existing power supply system (including power supply control and wiring construction).

[0019] Figure 2 The principle design drawing of the power supply system of the present application (one carrier signal transmitter corresponds to one carrier signal receiver).

[0020] Figure 3 The principle design drawing of the power supply system of the present application (multiple carrier signal transmitters correspond to multiple carrier signal receivers).

[0021] Figure 4 The system structure diagram of the carrier signal transmitter in Figure 2 Or Figure 3

[0022] ​Figure 5 As Figure 2 Or Figure 3 System configuration diagram of carrier signal receiver in

[0023] Figure 6 As Figure 4 System configuration diagram of transmitting end differential coupling module in Figure 5 Or

[0024] Figure 7 As Figure 5 System configuration diagram of filter module in

[0025] Figure 8 Signal flow diagram of power supply system control method of the present application. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application is described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0027] As Figure 2 , Figure 3 The power supply system shown in , mainly comprises a power supply line, a terminal device, a carrier signal transmitter, a carrier signal receiver, and a control command input device and a on-off device. For the convenience of description, the power supply line is only shown as a live wire L and a neutral wire N. The terminal device is electrically connected to the corresponding on-off device. The carrier signal transmitter is electrically connected to the power supply line and the control command input device. It should be noted that the control command input device can be integrated into the carrier signal transmitter or installed independently of the carrier signal transmitter. The carrier signal receiver is electrically connected to the power supply line and the on-off device. It should be noted that the on-off device can be integrated into the carrier signal receiver or the terminal device, or installed independently of the carrier signal receiver or the terminal device. When the carrier signal transmitter transmits a high-frequency carrier control signal to the power supply line, the high-frequency carrier control signal is transmitted to the carrier signal receiver through the power supply line. The carrier signal receiver controls the response state of the on-off device according to the received high-frequency carrier control signal, wherein the response state of the on-off device includes no response of the on-off device, the on-off device in the on state or in the off state. For the convenience of description, the "high frequency" in the "high frequency carrier control signal" in the present patent is preferably in the frequency range of 3KHz-100MHz.

[0028] The system configuration diagram of the carrier signal transmitter is shown in Figure 4As shown, mainly includes a transmitting end MCU, the transmitting end MCU contains transmitting end address module, transmitting end processing module, carrier high frequency signal modulation generation module and transmitting end storage module, the transmitting end address module and transmitting end address code input device between form electric connection, the transmitting end address code input device usually adopts USB interface, serial port, bluetooth, NFC, etc. By transmitting end address code input device can be injected into the transmitting end address module pre-set address code information, the address code information is stored in transmitting end address module. The control instruction input device is used to output control instruction to the transmitting end processing module, the control instruction includes level signal, pulse signal, voice signal, touch signal, face recognition signal, time control signal, etc. The transmitting end processing module is used to parse control instruction and address code information, when control instruction input device outputs corresponding control instruction to transmitting end processing module, transmitting end address module outputs address code information to transmitting end processing module, the control instruction and address code information are parsed by transmitting end processing module and output to carrier high frequency signal modulation generation module, and form the high frequency carrier control signal through carrier high frequency signal modulation generation module modulation processing.

[0029] The system structure diagram of the carrier signal receiver is as follows Figure 5As shown, mainly includes receiving end MCU, the receiving end MCU contains carrier high frequency signal receiving and demodulation module, receiving end address module, receiving end control module and receiving end storage module, the receiving end address module and receiving end address code input device form electrical connection, the receiving end address code input device usually adopts USB interface, serial port, bluetooth, NFC, etc..Through the receiving end address code input device, the pre-set address code information can be injected into the receiving end address module, and the address code information is stored in the receiving end address module.When the carrier high frequency signal receiving and demodulation module receives the high frequency carrier control signal output by the transmitting end MCU from the power supply line, the address code information in the high frequency carrier control signal is demodulated and compared with the address code information in the receiving end address module;If the verification is successful, the receiving end control module outputs control instruction, and the control instruction is used to control the on or off response of the on-off device. Among them, the on of the on-off device is used to control the opening response action of the terminal equipment connected with the on-off device, and the off of the on-off device is used to control the closing response action of the terminal equipment connected with the on-off device. It should be noted that the on-off device can adopt relay, MOS tube, IGBT (insulated gate bipolar transistor), BJT (bipolar junction transistor), COMFET (isolated gate transistor), level conversion switch, etc..If the verification fails, the receiving end control module does not output control instruction, and the on-off device has no response, and the terminal equipment connected with the on-off device also has no response. Therefore, the on or off response action and no response of the on-off device are realized by transmitting high frequency carrier control signal between the carrier signal transmitter and the carrier signal receiver through the power supply line, and there is no need to separately lay a dedicated control signal cable for the terminal equipment.

[0030] When the above power supply system is used, the control method of the power supply system is that the carrier signal transmitter and the carrier signal receiver in the power supply system transmit high frequency carrier control signal through power line carrier using the power supply line. The power line carrier, namely Power Line Carrier, is abbreviated as "PLC". PLC communication is a communication mode for information transmission by using power line as information transmission medium. Specifically as Figure 4 、 Figure 8As shown, the control instruction input device outputs the control instruction of the terminal device opening to the transmitting end processing module, the transmitting end address module outputs the address code information corresponding to the terminal device to the transmitting end processing module, and the control instruction and the address code information are output to the carrier high-frequency signal modulation generation module after being parsed by the transmitting end processing module, and are modulated and processed by the carrier high-frequency signal modulation generation module to form the high-frequency carrier control signal. Preferably, the control instruction and the address code information are modulated by the OFDM technology to form the high-frequency carrier control signal, and the high-frequency carrier control signal is output to the power supply line by the transmitting end MCU. In order to suppress common-mode interference and enhance the transmission quality and stability of the high-frequency carrier control signal, the high-frequency carrier control signal output by the transmitting end MCU can be output to the power supply line through the transmitting end differential coupling module; further, the high-frequency carrier control signal output by the transmitting end MCU can be first output to the signal amplifier module, amplified by the signal amplifier module, and then output to the power supply line through the transmitting end differential coupling module, as shown. Figure 4 The transmitting end differential coupling module mainly includes a capacitor C1 and a transformer T2, and the capacitor C1 is connected in series in the high-voltage end circuit of the transformer T2, as shown. Figure 6

[0031] As shown in Figure 5 , Figure 8 The high-frequency carrier control signal output by the transmitting end MCU is first output to the receiving end differential coupling module through the power supply line, and then output to the carrier high-frequency signal receiving and demodulation module through the receiving end differential coupling module; further, the high-frequency carrier control signal output by the receiving end differential coupling module is first processed by the filter module, and then output to the carrier high-frequency signal receiving and demodulation module. As shown in Figure 6 The receiving end differential coupling module mainly includes a capacitor C1 and a transformer T2, and the capacitor C1 is connected in series in the high-voltage end circuit of the transformer T2. As shown in Figure 7 ​As shown, the filter module mainly comprises resistors R412, capacitors C49, C410 and inductor L43. The resistor R412 and the capacitor C49 are connected in parallel. The capacitor C49 and the capacitor C410 are connected in parallel, and the inductors L41 and L42 are connected in series in the parallel branches, respectively. The capacitor C410 and the inductor L43 are connected in parallel, and the capacitors C411 and C412 are connected in series in the parallel branches, respectively. The inductor L43 is connected in series with the capacitors C413 and C414, respectively. The capacitor C413 is connected in series with the resistors R413 and R415, respectively. The resistor R413 is grounded. The capacitor C414 is connected in series with the resistors R414 and R416, respectively. The resistor R414 is grounded. With such a circuit structure design, common mode interference can be better suppressed, thereby enhancing the transmission quality and stability of the high-frequency carrier control signal.

[0032] When the carrier high-frequency signal receiving and demodulating module receives the high-frequency carrier control signal output by the transmitting end MCU from the power supply line, the address code information in the high-frequency carrier control signal is compared and verified with the address code information in the receiving end address module after being demodulated. If the verification fails, the receiving end control module does not output a control instruction, and at this time, the on-off device has no response, and the terminal equipment electrically connected with the on-off device also has no response. If the verification succeeds, the receiving end control module outputs a control instruction, which is first output to the on-off device and controls the on response or off response of the on-off device. The on of the on-off device is used to control the opening response action of the terminal equipment electrically connected with the on-off device, and the off of the on-off device is used to control the closing response action of the terminal equipment electrically connected with the on-off device, as shown in Figure 8

[0033] By adopting the above-mentioned power supply system and control method, the wiring construction of the power supply system can be as shown in Figure 2 The control instruction input device is electrically connected with the carrier signal transmitter, the carrier signal receiver is electrically connected with the on-off device, and the on-off device is electrically connected with the terminal equipment, so that the independent control signal cable required by the terminal equipment can be completely cancelled. In addition to the power supply system wiring construction method as shown in Figure 2 , a power supply system wiring construction as shown in Figure 3 , that is, a plurality of carrier signal transmitters correspond to a plurality of carrier signal receivers, can also be adopted. Specifically, as shown in Figure 3 ​As shown, the carrier signal transmitter is provided with several, and the several carrier signal transmitters are connected in parallel through the power supply line.The carrier signal receiver is also provided with several, including carrier signal receiver 1, carrier signal receiver 2,..., carrier signal receiver N, and the address code information stored on each carrier signal receiver is different; the carrier signal receiver 1, carrier signal receiver 2,..., carrier signal receiver N are connected in parallel through the power supply line, and any carrier signal transmitter and any carrier signal receiver are also connected in parallel through the power supply line.It should be noted that any carrier signal receiver can be electrically connected with a single on-off device, and the on-off device is electrically connected with a single terminal device, or any carrier signal receiver can be electrically connected with several on-off devices, and each on-off device is electrically connected with a single terminal device, and the several terminal devices are connected in parallel through the corresponding same carrier signal receiver at this time.

[0034] As shown in the figure, Figure 3 When any carrier signal transmitter outputs high-frequency carrier control signal to the power supply line, the carrier signal receiver 1, carrier signal receiver 2,..., carrier signal receiver N can all receive high-frequency carrier control signal from the power supply line.In any carrier signal receiver, the address code information in the high-frequency carrier control signal is demodulated and compared with the address code information stored in the carrier signal receiver; if the verification is successful, the carrier signal receiver outputs a control instruction, and the on-off device corresponding to the electrical connection responds according to the control instruction, and the response of the on-off device makes the terminal device corresponding to the electrical connection in the on state or the off state.If the verification fails, the carrier signal receiver does not output the control instruction, and the on-off device corresponding to the electrical connection has no response, so the terminal device connected with the on-off device also has no response.Using such a power supply system, the same carrier signal transmitter can be pre-set at different control points according to actual control requirements, and the carrier signal transmitter with different address code information can be pre-set at different power consumption places according to the specific distribution of the terminal device, so as to control the terminal device of different power consumption places through the carrier signal transmitter at different control points, greatly improving the control efficiency and control convenience.

[0035] The above only describes the preferred embodiments of the present application and is not intended to limit the present application, and it should be noted that any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A power supply system, comprising power supply lines, characterized in that: It also includes a carrier signal transmitter, a carrier signal receiver, and a switching device. The carrier signal transmitter is electrically connected to the power supply line, and the carrier signal receiver is electrically connected to both the power supply line and the switching device. The carrier signal transmitter transmits a high-frequency carrier control signal to the power supply line, and the high-frequency carrier control signal is transmitted to the carrier signal receiver through the power supply line. The carrier signal receiver controls the response state of the switching device based on the received high-frequency carrier control signal.

2. The power supply system according to claim 1, characterized in that: The carrier signal transmitter and carrier signal receiver are provided in multiple ways. The multiple carrier signal transmitters are connected in parallel through power supply lines, and the multiple carrier signal receivers are also connected in parallel through power supply lines. Furthermore, any carrier signal transmitter and any carrier signal receiver are also connected in parallel through power supply lines.

3. A power supply system according to claim 1 or 2, characterized in that: The carrier signal transmitter includes a transmitter processing module and a carrier high-frequency signal modulation generation module. The transmitter processing module is used to parse control commands and address code information. After being parsed by the transmitter processing module, the control commands and address code information are modulated and processed by the carrier high-frequency signal modulation generation module to form the high-frequency carrier control signal.

4. A power supply system according to claim 1 or 2, characterized in that: The high-frequency carrier control signal output by the carrier signal transmitter is sent to the power supply line through the differential coupling module at the transmitting end.

5. A power supply system according to claim 4, characterized in that: The transmitter differential coupling module includes a capacitor C1 and a transformer T2, with the capacitor C1 connected in series in the high-voltage circuit of the transformer T2.

6. A power supply system according to claim 4, characterized in that: The high-frequency carrier control signal output by the carrier signal transmitter is first sent to the signal amplifier module, amplified by the signal amplifier module, and then output to the power supply line through the transmitter differential coupling module.

7. A power supply system according to claim 1 or 2, characterized in that: The carrier signal receiver includes a receiver address module, a receiver control module, and a carrier high-frequency signal receiving and demodulation module. After receiving the high-frequency carrier control signal output by the carrier signal transmitter from the power supply line, the address code information in the high-frequency carrier control signal is demodulated and compared and verified with the address code information in the receiver address module. If the verification is successful, the receiving end control module outputs a control command; If the verification fails, the receiving end control module will not output control commands.

8. A power supply system according to claim 7, characterized in that: The high-frequency carrier control signal output by the carrier signal transmitter is first output to the differential coupling module at the receiving end through the power supply line. The high-frequency carrier control signal output by the differential coupling module at the receiving end is then processed by the filter module and output to the carrier high-frequency signal receiving and demodulation module.

9. A power supply system according to claim 8, characterized in that: The filter module includes a resistor R412, capacitors C49 and C410, and an inductor L43. Resistor R412 and capacitor C49 are connected in parallel. Capacitors C49 and C410 are connected in parallel, with inductors L41 and L42 connected in series in the parallel branch. Capacitor C410 and inductor L43 are connected in parallel, with capacitors C411 and C412 connected in series in the parallel branch. Inductor L43 is connected in series with capacitors C413 and C414. Capacitor C413 is connected in series with resistors R413 and R415. Resistor R413 is grounded. Capacitor C414 is connected in series with resistors R414 and R416. Resistor R414 is grounded.

10. A power supply system control method, characterized in that: The power supply system is the power supply system as described in any one of claims 1-9, wherein the carrier signal transmitter and the carrier signal receiver transmit high-frequency carrier control signals via power line carrier communication.

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