CN110572188B - Circuit and method for configuring and upgrading power supply based on power carrier - Google Patents
Circuit and method for configuring and upgrading power supply based on power carrier Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/548—Systems for transmission via power distribution lines the power on the line being DC
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Abstract
The invention discloses a circuit based on power carrier configuration and power supply upgrading, which comprises an upper computer, a first PLC module and an LED driver, wherein the upper computer is connected with the first PLC module, the first PLC module is connected with the LED driver, a capacitor C2 is connected between the first PLC module and the LED driver, the LED driver comprises a Feedback circuit, a power supply control module, an inductor L, a resistor R, a triode Q, a diode D, a capacitor C2 and a capacitor Cout, and the power supply control module is respectively connected with the Feedback circuit, the anode of the diode D, the emitter of the triode Q, one end of the capacitor C1, one end of the capacitor Cout and the PLC module. The beneficial effects are that: the invention adopts bias voltage to supply power to the demodulation power supply control circuit in the power supply, can realize effective transmission of signals, and supports simultaneous configuration and upgrading of multiple machines.
Description
Technical Field
The invention relates to the technical field of LED power supplies, in particular to a circuit and a method for configuring and upgrading a power supply based on a power carrier.
Background
With the massive consumption of energy resources, the climate caused by the greenhouse effect is worsened. Is in response to the green and environment-friendly requirements of national energy conservation, emission reduction and the like. The LED power supply has high efficiency, long service life, small volume and light weight, meets the needs of the times and gradually occupies the main position in the market.
The output voltage of the common LED power supply is variable in a certain range, and the current is constant. Because the lamp beads of different lamp manufacturers are selected to be connected in series and parallel, the structure is flexible, the non-power-on section is adaptive to the output voltage, and the variation range of the output current is relatively large. The related power segments of the common power supply cannot be fully compatible with market demands, so that the variety of the power supplies of the same power segment is increased. The power supply is various, and the research, development and production investment of manufacturers is increased. In order to fully utilize production resources, the design, development and compatibility of the LED power supply with wider width meet the needs of the times. Currently, in order to effectively improve the compatibility of an LED power supply, an adjustable LED power supply with an output voltage and current range capable of being greatly adjusted is appeared in the market. The adjusting technology adopted by the adjustable LED power supply mainly comprises the following five types, and related brief schematic diagrams are as follows (MCU is not necessary): as shown in fig. 1, an adjustable LED power supply that changes the output voltage or output current using a potentiometer (adjustable resistor); as in fig. 2, an adjustable power supply that changes the output voltage or output current using a dimming line; as shown in fig. 3, an infrared protocol is used to configure an adjustable power supply for changing output voltage or output current; as shown in fig. 4, an adjustable LED power supply that varies the output voltage or output current using an RFID configuration power supply; as shown in fig. 5, the power carrier low voltage 220V input line configuration power supply is used to change the output voltage or output current of the adjustable LED power supply. The power supply meets the great compatibility, so that the full utilization of production materials is facilitated, the production resources are saved, the investment for researching and developing multiple types is reduced, and the energy is saved.
In fig. 1, the voltage at two ends of the resistor is changed by changing the resistance value of the adjustable resistor. This voltage can be directly used as a current reference voltage for the feedback circuit (fig. 6) to vary the output current. The voltage can also be sampled by the MCU ADC, and the current loop reference voltage is provided by the MCU IO port, so that the output current is changed. (cost factors are considered in this way). The output voltage can be regulated by regulating the output voltage and changing the reference voltage of the output voltage loop through an adjustable resistor. The circuit is relatively simple and has high reliability. The cost is relatively low. The configuration mode is simple, but the configuration is needed one by one, the production convenience is relatively poor, the linearity of configuration parameters is limited by surrounding elements, and the function is single.
In FIG. 2, the MCU ADC is used for sampling a voltage signal (or PWM) of 0-10V on a light-modulating line, the programming program provides a current loop reference voltage through the MCU IO port, the output current is changed, the voltages are the same, and the full-load output voltage and current parameters can be directly configured through a communication line. Because the MCU is involved in the control, complex control algorithms such as light attenuation compensation, linearity compensation and the like can be realized. But the cost is relatively high, the development period is long, the output needs to be isolated, and the control mode is relatively complex.
In fig. 3, an infrared emitting diode is adopted, the infrared emitting diode is communicated with an MCU through an infrared protocol, a programming program provides a current loop reference voltage through an MCU IO port, the output current is changed, the voltage is the same, a circuit is relatively simple, and complex control algorithms such as light attenuation compensation, linearity compensation and the like can be realized. However, the communication is easy to be interfered by visible light, the configuration parameters can be completed only by inputting power-on operation, and the multi-machine configuration is not supported.
In fig. 4, by adopting RFID and communicating with MCU through near field, the programming provides current loop reference voltage through MCU IO port, changing output current and voltage, complex control algorithm such as light attenuation compensation and linearity compensation can be realized, and the production and manufacture are convenient, but the communication distance is limited by NFC reader-writer power without inputting power-on configuration, and antenna matching has high requirement on developer and high cost.
In fig. 5, an input line power carrier module or chip is adopted to communicate with an MCU, a program is written to provide a current loop reference voltage through an MCU IO port, the output current is changed, the voltage is the same, a complex control algorithm can be realized, but the cost is high, various protection measures are required for a 220V communication circuit at the input end, the communication is easily affected by the background noise of a power grid, and the circuit is complex.
For the problems in the related art, no effective solution has been proposed at present.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a circuit and a method for configuring and upgrading a power supply based on a power carrier so as to overcome the technical problems in the prior art.
For this purpose, the invention adopts the following specific technical scheme:
according to an aspect of the invention, a circuit for configuring and upgrading a power supply based on a power carrier is provided, and the circuit comprises an upper computer, a first PLC module and an LED driver, wherein the upper computer is connected with the first PLC module, the first PLC module is connected with the LED driver, and a capacitor C2 is connected between the first PLC module and the LED driver;
the LED driver comprises a Feedback circuit, a power control module, an inductor L, a resistor R, a triode Q, a diode D, a capacitor C2 and a capacitor Cout, wherein the power control module is respectively connected with the Feedback circuit, the anode of the diode D, the emitter of the triode Q, one end of the capacitor C1, one end of the capacitor Cout and the PLC module, the anode of the diode D is grounded, the cathode of the diode D is respectively connected with one end of the resistor R and the base of the triode Q, the collector of the triode Q is respectively connected with the other end of the resistor R, one end of the inductor L, the other end of the capacitor C1 and one end of the capacitor C2, the other end of the inductor L is connected with the other end of the capacitor Cout, and the other end of the capacitor C2 is connected with the first PLC module.
Further, the power control module comprises an MCU and a PLC module II, and the MCU is connected with the PLC module II.
Further, the power control module further comprises an ADJ pin, a GND pin and a VCC pin, wherein the power control module is connected with the ADJ pin of the Feedback circuit through the ADJ pin, the power control module is connected with the positive electrode of the diode D through the GND pin and is grounded, the power control module is connected with the emitter of the triode Q through the VCC pin, and the power control module is further connected with one end of the capacitor C1, one end of the capacitor Cout and the first PLC module through the second PLC control module.
Further, the first PLC module and the second PLC module each include a power carrier hardware circuit, a power carrier IC, and a power carrier SOC.
Furthermore, the upper computer, the first PLC module, the second PLC module and the MCU are respectively provided with an RX pin and a TX pin, and the first PLC module is connected with the upper computer and the second PLC module is connected with the MCU through a USART serial port.
Further, the diode D is a zener diode.
Further, the triode Q is an NPN triode.
According to another aspect of the present invention, there is also provided a method for configuring and upgrading a power supply based on a power carrier, including the steps of:
the upper computer is connected with the first PLC module through a USART serial port, and the upper computer is controlled to transmit a configuration signal to the first PLC module;
the first PLC module modulates the baseband signal into a transmission signal, loads direct-current bias voltage and simultaneously transmits the transmission signal to an output line through a coupling circuit in the first PLC module;
the transmission signal with the direct-current bias voltage is transmitted to the second PLC module through the output line;
a baseband signal is obtained through a coupling circuit and filtering demodulation in the PLC module II and is transmitted to the MCU through the USART serial port, so that signal transmission and configuration are realized;
the MCU changes the reference standard of the power supply voltage ring or the current ring through the IO port by the obtained control signal, and realizes the adjustment of the output voltage and the output current.
Further, when the transmission signal is loaded with the direct-current bias voltage and is configured with a power supply, the demodulated power supply control circuit can be supplied with power through the output line by the voltage stabilizing circuit, and the power supply mode can realize simultaneous configuration and upgrading of multiple machines.
The beneficial effects of the invention are as follows:
1. the invention can realize the configuration of output voltage and current without using other wires by multiplexing the output wires.
2. The invention supports multi-machine configuration, has high production efficiency, long transmission distance and good anti-interference effect.
3. The invention can realize complex control algorithm, support the upgrade of the subsequent program at the same time, better meet the change of the market demand, greatly improve the compatibility, make the production resource fully utilized in addition, the invention makes the power supply develop from single series of functions to compound multi-functional series, suitable for the enterprise to produce in batches.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an adjustable LED power supply in the prior art that uses a potentiometer (adjustable resistor) to change the output voltage or output current;
FIG. 2 is a schematic diagram of a prior art adjustable power supply using a communication line or a dimming line to change the output voltage or the output current;
FIG. 3 is a schematic diagram of an adjustable power supply for changing output voltage or output current using an IR protocol configuration power supply in the prior art;
FIG. 4 is a schematic diagram of a prior art adjustable LED power supply that uses an RFID configured power supply to vary the output voltage or output current;
FIG. 5 is a schematic diagram of an adjustable LED power supply for changing output voltage or output current using a power carrier low voltage 220V input line configuration power supply in the prior art;
FIG. 6 is a prior art current Feedback circuit diagram;
FIG. 7 is a schematic diagram of a circuit for configuring and upgrading a power supply based on a power carrier, according to an embodiment of the invention;
fig. 8 is a schematic diagram of a signal modulation principle of a PLC module in a circuit based on power carrier configuration and power upgrade according to an embodiment of the present invention;
FIG. 9 is a schematic waveform diagram of the signal modulation principle of a PLC module in a circuit based on power carrier configuration and upgrade power supply according to an embodiment of the present invention;
fig. 10 is a schematic diagram of signal demodulation principle of a PLC module in a circuit based on power carrier configuration and power supply upgrade according to an embodiment of the present invention;
FIG. 11 is a schematic waveform diagram of the signal demodulation principle of a PLC module in a circuit based on power carrier configuration and upgrade power supply according to an embodiment of the present invention;
fig. 12 is a flowchart of a method for configuring and upgrading a power supply based on a power carrier according to another embodiment of the present invention.
Detailed Description
For the purpose of further illustrating the various embodiments, the present invention provides the accompanying drawings, which are a part of the disclosure of the present invention, and which are mainly used to illustrate the embodiments and, together with the description, serve to explain the principles of the embodiments, and with reference to these descriptions, one skilled in the art will recognize other possible implementations and advantages of the present invention, wherein elements are not drawn to scale, and like reference numerals are generally used to designate like elements.
According to an embodiment of the invention, a circuit and a method for configuring and upgrading a power supply based on a power carrier are provided.
The invention will be further described with reference to the accompanying drawings and the specific embodiments, as shown in fig. 7-11, a circuit based on power carrier configuration and power supply upgrade according to an embodiment of the invention, which uses bias voltage to supply power to a demodulation power supply control circuit inside the power supply through multiplexing output lines, so that effective signal transmission can be realized, and multiple machines are supported to simultaneously configure and upgrade; in addition, the output line transmits signals in a power carrier mode, so that the configuration of a power supply and the upgrading of a control program can be realized. The circuit comprises an upper computer, a first PLC module and an LED driver, wherein the upper computer is connected with the first PLC module, the first PLC module is connected with the LED driver, and a capacitor C2 is connected between the first PLC module and the LED driver;
the LED driver comprises a Feedback circuit, a power control module, an inductor L, a resistor R, a triode Q, a diode D, a capacitor C2 and a capacitor Cout, wherein the power control module is respectively connected with the Feedback circuit, the anode of the diode D, the emitter of the triode Q, one end of the capacitor C1, one end of the capacitor Cout and the PLC module, the anode of the diode D is grounded, the cathode of the diode D is respectively connected with one end of the resistor R and the base of the triode Q, the collector of the triode Q is respectively connected with the other end of the resistor R, one end of the inductor L, the other end of the capacitor C1 and one end of the capacitor C2, the other end of the inductor L is connected with the other end of the capacitor Cout, and the other end of the capacitor C2 is connected with the first PLC module.
The power supply control module comprises an MCU and a PLC module II, and the MCU is connected with the PLC module II.
Specifically, the power control module further comprises an ADJ pin, a GND pin and a VCC pin, wherein the power control module is connected with the ADJ pin of the Feedback circuit through the ADJ pin, the power control module is connected with the positive electrode of the diode D and grounded through the GND pin, the power control module is connected with the emitter of the triode Q through the VCC pin, and the power control module is further connected with one end of the capacitor C1, one end of the capacitor Cout and the first PLC module through the second PLC control module.
The first PLC module and the second PLC module comprise a power carrier hardware circuit, a power carrier IC and a power carrier SOC.
The upper computer, the first PLC module, the second PLC module and the MCU are respectively provided with an RX pin and a TX pin, and the first PLC module is connected with the upper computer and the second PLC module is connected with the MCU through a USART serial port.
The diode D is a voltage stabilizing diode, and the triode Q is an NPN triode.
In the implementation, the invention adopts a power carrier communication mode to realize the configuration and the upgrading of a power control program, so that the power output parameters are flexible and adjustable, and the functions are more powerful; the output voltage of the common power supply is greatly changed and even is output at high voltage, so that if the control circuit is directly connected with the output line, the control circuit samples the voltage of the IC pin to be limited by the output voltage when the output voltage is high, and the pin is stressed by higher voltage and even damaged when the output voltage is high. And different output voltages pursue reliability, sampling parameters need to be changed correspondingly, the power supply is easily influenced by a control circuit, and the accuracy, operability and compatibility of the output parameters are greatly reduced. Therefore, the invention adopts the power carrier communication mode, and the output direct-current voltage and the control circuit are independent from each other and are not affected due to the common-mode coil and the capacitor in the coupling circuit, so that the sampling parameters of the control circuit are not required to be changed according to the difference of the output voltages. The method has the advantages of easy operation and high reliability, and the precision of the output parameters is not influenced by a control circuit.
As shown in FIG. 7, the invention adopts an output line power carrier module or chip to communicate with the MCU, and a programming program provides a current loop reference voltage through an MCU IO port, so that the output current is changed, and the voltage is the same. Multiplexing output lines can realize complex control algorithms such as light attenuation compensation, linearity compensation and the like. The method supports offline configuration parameters or upgrading programs, supports multi-machine operation, is convenient to produce, and directly utilizes the modulating voltage for burning voltage. The complexity is lower than that of fig. 5, the output is not required to be isolated, and the cost performance is high.
Fig. 8 is a schematic diagram of a signal modulation principle of a PLC module in a circuit based on power carrier configuration and power supply upgrade according to an embodiment of the present invention;
fig. 9 is a schematic waveform diagram of a PLC module signal modulation principle in a circuit based on power carrier configuration and power supply upgrade according to an embodiment of the present invention;
fig. 10 is a schematic diagram of a signal demodulation principle of a PLC module in a circuit based on power carrier configuration and power supply upgrade according to an embodiment of the present invention;
fig. 11 is a schematic waveform diagram of a PLC module signal demodulation principle in a circuit based on power carrier configuration and power supply upgrade according to an embodiment of the present invention.
As shown in fig. 12, a method for configuring and upgrading a power supply based on a power carrier according to another embodiment of the present invention includes the steps of:
step S101, connecting the upper computer with the first PLC module through a USART serial port, and controlling the upper computer to transmit a configuration signal to the first PLC module;
step S102, the first PLC module modulates the baseband signal into a transmission signal, loads direct-current bias voltage and simultaneously transmits the direct-current bias voltage to an output line through a coupling circuit in the first PLC module;
the direct current bias is loaded because the input AC line does not provide alternating current voltage when the power supply is configured, and the demodulated power supply control circuit does not supply power and cannot work normally. After loading the DC bias voltage, when configuring the power supply, the demodulated power supply control circuit can be supplied with power through the output line via the voltage stabilizing circuit, and the power supply mode can realize the simultaneous configuration and upgrading of multiple machines.
Step S103, the transmission signal with the direct-current bias voltage is transmitted to the second PLC module through the output line;
when the transmission signal of the loaded DC bias voltage is arranged on the output line, the power supply of the demodulation circuit is satisfied, and the demodulation circuit can work normally.
Step S104, a baseband signal is obtained through a coupling circuit and filtering demodulation in the PLC module II, and is transmitted to the MCU through the USART serial port, so that signal transmission and configuration are realized;
specifically, the baseband signal is obtained through the demodulation of the (power carrier IC) by the coupling circuit, the filtering and the transmission and the configuration of the signal are realized through the transmission of the USART serial port to the MCU. If the power carrier is the SOC, the MCU in the SOC obtains the baseband signal, and the transmission and the configuration of the signal are realized. The MCU program upgrading process is the same.
And step S105, the MCU changes a power supply voltage ring or a current ring reference standard through an IO port by the obtained control signal, and realizes the adjustment of output voltage and current.
In summary, by means of the above technical solution of the present invention, by multiplexing the use of output lines, it is possible to implement configuration of output voltage and current without using other wires; in addition, the invention supports multi-machine configuration, has high production efficiency, long transmission distance and good anti-interference effect.
Meanwhile, the invention can realize complex control algorithm, support the upgrade of the subsequent program at the same time, better meet the change of the market demand, greatly improve the compatibility, make full use of the production resource, in addition, the invention makes the power supply develop from single series of functions to compound multi-functional series, suitable for the enterprise to produce in batches.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. The circuit based on the power carrier configuration and the power supply upgrading is characterized by comprising an upper computer, a first PLC module and an LED driver, wherein the upper computer is connected with the first PLC module, the first PLC module is connected with the LED driver, and a capacitor C2 is connected between the first PLC module and the LED driver;
the LED driver comprises a Feedback circuit, a power control module, an inductor L, a resistor R, a triode Q, a diode D, a capacitor C2 and a capacitor Cout, wherein the power control module is respectively connected with the Feedback circuit, the anode of the diode D, the emitter of the triode Q, one end of the capacitor C1, one end of the capacitor Cout and the PLC module, the anode of the diode D is grounded, the cathode of the diode D is respectively connected with one end of the resistor R and the base of the triode Q, the collector of the triode Q is respectively connected with the other end of the resistor R, one end of the inductor L, the other end of the capacitor C1 and one end of the capacitor C2, the other end of the inductor L is connected with the other end of the capacitor Cout, and the other end of the capacitor C2 is connected with the first PLC module;
the power supply control module comprises an MCU and a PLC module II, and the MCU is connected with the PLC module II;
the power supply control module further comprises an ADJ pin, a GND pin and a VCC pin, wherein the power supply control module is connected with the ADJ pin of the Feedback circuit through the ADJ pin, the power supply control module is connected with the positive electrode of the diode D through the GND pin and is grounded, the power supply control module is connected with the emitting electrode of the triode Q through the VCC pin, and the power supply control module is further connected with one end of the capacitor C1 through the second PLC control module respectively and one end of the capacitor Cout is connected with the first PLC module.
2. The power carrier configuration and upgrade power supply based circuit according to claim 1, wherein the first PLC module and the second PLC module each comprise a power carrier hardware circuit, a power carrier IC, and a power carrier SOC.
3. The circuit based on power carrier configuration and upgrade power supply according to claim 2, wherein RX pins and TX pins are respectively arranged on the upper computer, the first PLC module, the second PLC module and the MCU, and the first PLC module and the upper computer, and the second PLC module and the MCU are connected through USART serial ports.
4. A power carrier configuration and upgrade power supply based circuit according to claim 3, wherein the diode D is a zener diode.
5. The power carrier configuration and upgrade power supply based circuit according to claim 4, wherein the triode Q is an NPN triode.
6. A method for configuring and upgrading a power supply based on a power carrier, characterized in that the circuit for configuring and upgrading a power supply based on a power carrier according to claim 5 comprises the steps of:
the upper computer is connected with the first PLC module through a USART serial port, and the upper computer is controlled to transmit a configuration signal to the first PLC module;
the first PLC module modulates the baseband signal into a transmission signal, loads direct-current bias voltage and simultaneously transmits the transmission signal to an output line through a coupling circuit in the first PLC module;
the transmission signal with the direct-current bias voltage is transmitted to the second PLC module through the output line;
a baseband signal is obtained through a coupling circuit and filtering demodulation in the PLC module II and is transmitted to the MCU through the USART serial port, so that signal transmission and configuration are realized;
the MCU changes the reference standard of the power supply voltage ring or the current ring through the IO port by the obtained control signal, and realizes the adjustment of the output voltage and the output current.
7. The method for configuring and upgrading power supply based on power carrier according to claim 6, wherein the power supply is configured by the transmission signal after loading the dc bias voltage, and the demodulated power supply control circuit can be supplied with power through the output line via the voltage stabilizing circuit, and the power supply mode can realize simultaneous configuration and upgrading of multiple machines.
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| CN210578539U (en) * | 2019-09-20 | 2020-05-19 | 深圳瓦特智汇科技有限公司 | Circuit based on power line carrier configuration and upgrading power supply |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202362666U (en) * | 2011-12-16 | 2012-08-01 | 翊远电子科技(上海)有限公司 | Control device based on power line carrier communication |
| CN205648141U (en) * | 2016-02-25 | 2016-10-12 | 上海赞迪网络科技有限公司 | Electricity -saving device |
| US10314124B1 (en) * | 2018-05-21 | 2019-06-04 | Shenzhen Longood Intelligent Electric Co., Ltd | LED driving power supply based on 2.4G remote controlling adjustment of brightness and color temperature |
| CN109922562A (en) * | 2018-12-11 | 2019-06-21 | 深圳市优威电气技术有限公司 | A kind of multiple-passage large power industry LED driver |
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