CN115066066A - Lamp control method - Google Patents
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- CN115066066A CN115066066A CN202210752378.1A CN202210752378A CN115066066A CN 115066066 A CN115066066 A CN 115066066A CN 202210752378 A CN202210752378 A CN 202210752378A CN 115066066 A CN115066066 A CN 115066066A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
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Abstract
The application discloses a lamp control method, which is applied to a lamp control system, wherein the lamp control system comprises a lamp control signal generating device, a control signal output device, a lamp control signal receiving device and a lamp control adjusting device. When receiving a lamp control regulation signal transmission instruction, the lamp control signal generation device modulates the lamp control regulation signal into a voltage square wave signal, and then transmits the voltage square wave signal to the lamp control signal receiving device through a power line of a controlled lamp after boosting the voltage square wave signal. The lamp control signal receiving device reduces the voltage of the received voltage square wave signal and demodulates the reduced voltage square wave signal to obtain a lamp control regulating signal. The lamp control adjusting device controls the lighting state of the controlled lamp according to the lamp control adjusting signal. The transmitting end firstly boosts the modulated lamp control adjusting signal and then transmits the boosted lamp control adjusting signal, and the receiving end decompresses the boosted lamp control adjusting signal and then demodulates the boosted lamp control adjusting signal, so that the lamp control adjusting signal is longer in transmission distance and higher in anti-jamming capability.
Description
Technical Field
The invention relates to the technical field of intelligent lamp control, in particular to a lamp control method.
Background
The lighting is a measure for illuminating work and living places or individual objects by using various light sources, the lighting not only makes the environment bright, but also is adjusted according to the actual requirements of specific lighting environments (such as lighting brightness, colors and the like), and the intelligent lamp control system is used for adjusting the brightness of the lighting lamp. Generally, lamp control signals of an intelligent lamp control system are in data Communication in a Power Line Communication (PLC) mode, but the data transmission distance of the PLC Communication is short, and the anti-interference capability is poor.
Disclosure of Invention
The technical problem that this application will be solved is how to improve transmission distance and the interference killing feature of lamp control signal among the intelligent lamp control system.
According to a first aspect, a lamp control system for regulating a lighting state of a controlled lamp includes a lamp control signal generating device, a control signal outputting device, a lamp control signal receiving device, and a lamp control regulating device;
the lamp control signal generating device is used for outputting a lamp control adjusting signal transmission instruction to the control signal output device;
the control signal output device is used for responding to the lamp control adjusting signal transmission instruction, modulating a lamp control adjusting signal into a voltage square wave signal and transmitting the voltage square wave signal to the lamp control signal receiving device through a power line of the controlled lamp;
the lamp control signal receiving device is used for demodulating and acquiring the lamp control adjusting signal according to the received voltage square wave signal and sending the lamp control adjusting signal to the lamp control adjusting device;
the lamp control adjusting device responds to the lamp control adjusting signal to control the lighting state of the controlled lamp; the lighting state of the controlled lamp comprises on, off, replacement brightness and/or an alarm mode;
the control signal output device comprises a signal modulation circuit and a signal boosting circuit; the signal modulation circuit is used for modulating the lamp control regulation signal into the voltage square wave signal according to a preset coding mode; the signal booster circuit is used for boosting the voltage square wave signal and transmitting the boosted voltage square wave signal to the lamp control signal receiving device through the power line of the controlled lamp.
In one embodiment, the lamp control signal receiving device comprises a signal voltage reduction circuit and a signal demodulation circuit; the signal voltage reduction circuit is used for reducing the voltage of the received voltage square wave signal and outputting the voltage square wave signal after reduction to the signal demodulation circuit; and the signal demodulation circuit demodulates the voltage square wave signal to obtain the lamp control regulation signal and sends the lamp control regulation signal to the lamp control regulation device.
In one embodiment, the control signal output device comprises a switching power supply circuit, and the switching power supply circuit is used for supplying power to the lamp control signal output device; the switching power supply circuit comprises an alternating current-direct current conversion circuit, a direct current transformation circuit, a lamp control regulating signal output circuit and a switching power supply output circuit;
the alternating current-direct current conversion circuit comprises an alternating current first input end, an alternating current second input end, a transformer first connecting end, a transformer second connecting end, a transformer third connecting end and a lamp control adjusting signal output circuit connecting end; the alternating current first input end and the alternating current second input end are respectively connected with a zero line N and a live line L of a power line of the controlled lamp; the first connecting end of the transformer, the second connecting end of the transformer and the third connecting end of the transformer are connected with the direct current transformation circuit; the lamp control adjusting signal output circuit is connected with the lamp control adjusting signal output circuit;
the direct current transformation circuit comprises a first connecting end, a second connecting end, a third connecting end and a fourth connecting end; the first connecting end, the second connecting end and the third connecting end of the direct current transformation circuit are respectively connected with the first transformer connecting end, the second transformer connecting end and the third transformer connecting end of the alternating current-direct current conversion circuit; the fourth connecting end of the direct current transformation circuit is connected with the switching power supply output circuit;
the lamp control regulating signal output circuit comprises a first connecting end, a second connecting end, a third connecting end and a fourth connecting end; the first connecting end of the lamp control regulating signal output circuit is connected with the connecting end of the lamp control regulating signal output circuit of the alternating current-direct current conversion circuit, the second connecting end of the lamp control regulating signal output circuit is connected with the third connecting end of the transformer of the alternating current-direct current conversion circuit, and the third connecting end of the lamp control regulating signal output circuit is connected with the fourth connecting end of the direct current transformation circuit; the fourth connecting end of the lamp control regulating signal output circuit is connected with the switching power supply output circuit;
the switching power supply output circuit comprises a first connecting end, a first output connecting end and a second output connecting end; the first output connecting end of the switching power supply output circuit is connected with the fourth connecting end of the direct current transformation circuit, and the first connecting end of the switching power supply output circuit is connected with the fourth connecting end of the lamp control regulating signal output circuit; the first output connection end is used for outputting a first direct current voltage signal, and the second output connection end is used for outputting a second direct current voltage signal.
According to a second aspect, a lamp control method for dimming a controlled lamp, the method comprising:
when receiving a lamp control regulation signal transmission instruction, the lamp control signal generation device modulates the lamp control regulation signal into a voltage square wave signal according to a preset coding mode;
the lamp control signal generating device is also used for boosting the voltage square wave signal and transmitting the boosted voltage square wave signal to the lamp control signal receiving device through the power line of the controlled lamp;
the lamp control signal receiving device is used for reducing the voltage of the received voltage square wave signal and demodulating the voltage square wave signal after voltage reduction so as to obtain the lamp control regulating signal;
sending the lamp control adjusting signal to a lamp control adjusting device;
the lamp control adjusting device controls the lighting state of the controlled lamp according to the lamp control adjusting signal; the lighting state of the controlled lamp comprises opening, closing, replacing brightness and/or an alarm mode.
In one embodiment, the method further comprises:
and when the lamp control signal generating device does not receive a new lamp control regulating signal transmission instruction, the boosted modulated voltage square wave signal is repeatedly sent to the lamp control signal receiving device.
In an embodiment, the predetermined encoding mode is manchester encoding.
The lamp control system according to the above embodiment includes a lamp control signal generating device, a lamp control signal outputting device, a lamp control signal receiving device, and a lamp control adjusting device. When receiving a lamp control regulation signal transmission instruction, the lamp control signal generation device modulates the lamp control regulation signal into a voltage square wave signal, and then transmits the voltage square wave signal to the lamp control signal receiving device through a power line of a controlled lamp after boosting the voltage square wave signal. The lamp control signal receiving device reduces the voltage of the received voltage square wave signal and demodulates the reduced voltage square wave signal to obtain a lamp control regulating signal. The lamp control adjusting device controls the lighting state of the controlled lamp according to the lamp control adjusting signal. The transmitting end firstly boosts the modulated lamp control adjusting signal and then transmits the boosted lamp control adjusting signal, and the receiving end decompresses the boosted lamp control adjusting signal and then demodulates the boosted lamp control adjusting signal, so that the lamp control adjusting signal is longer in transmission distance and higher in anti-jamming capability.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a lamp control system;
FIG. 2 is a circuit diagram of an embodiment of a switching power supply circuit;
FIG. 3 is a schematic circuit diagram of an embodiment of a DC voltage regulator circuit;
FIG. 4 is a schematic circuit diagram of an embodiment of an AC power protection circuit;
FIG. 5 is a circuit diagram of a signal boosting circuit according to an embodiment;
FIG. 6 is a circuit diagram of a signal step-down circuit in an embodiment;
fig. 7 is a schematic diagram showing a pin connection of a controller of the lamp control signal output apparatus in one embodiment;
fig. 8 is a schematic diagram of a square wave modulation output circuit of a controller of the lamp control signal output device in an embodiment;
fig. 9 is a schematic diagram of a square wave signal modulation circuit of the lamp control signal output device in an embodiment;
fig. 10 is a schematic diagram showing a pin connection of a controller of the lamp control signal receiving apparatus according to an embodiment;
fig. 11 is a flowchart illustrating a lamp control method according to another embodiment.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
The embodiment of the invention discloses a lamp control method, which comprises the steps that firstly, a lamp control signal generating device receives a lamp control adjusting signal transmission instruction, the lamp control adjusting signal is modulated into a voltage square wave signal, and then the voltage square wave signal is boosted and then transmitted to a lamp control signal receiving device through a power line of a controlled lamp. Because the sending end firstly boosts the modulated lamp control adjusting signal and then transmits the boosted modulated lamp control adjusting signal, the transmission distance of the lamp control adjusting signal is longer, and the anti-jamming capability is stronger.
Example one
Referring to fig. 1, a schematic structural diagram of a lamp control system in an embodiment is shown, the lamp control system is used for adjusting brightness of a controlled lamp 5, and the lamp control system includes a lamp control signal generating device 1, a lamp control signal outputting device 2, a lamp control signal receiving device 3, and a lamp control adjusting device 4. The lamp control signal generating device 1 is used for outputting a lamp control adjusting signal transmission instruction to the lamp control signal outputting device 2. The control signal output device 2 is configured to modulate the lamp control adjustment signal into a voltage square wave signal in response to the lamp control adjustment signal transmission instruction, and transmit the voltage square wave signal to the lamp control signal receiving device 3 through the power line of the controlled lamp. The lamp control signal receiving device 3 is configured to demodulate the lamp control adjustment signal according to the received voltage square wave signal, and send the lamp control adjustment signal to the lamp control adjustment device 4. The lamp control adjusting device 4 controls the lighting state of the controlled lamp 5 in response to the lamp control adjusting signal, wherein the lighting state of the controlled lamp comprises on, off, replacement brightness and/or an alarm mode. The control signal output device 2 includes a signal modulation circuit 21 and a signal boosting circuit 22. The signal modulation circuit 21 is used for code-modulating the lamp control adjustment signal into a voltage square wave signal according to a preset coding mode. The signal boosting circuit 22 is configured to boost the voltage square-wave signal, and transmit the boosted voltage square-wave signal to the lamp control signal receiving device 3 through the power line of the controlled lamp 5. The lamp control signal receiving device 3 includes a signal step-down circuit 31 and a signal demodulation circuit 32. The signal voltage reducing circuit 31 is configured to reduce the voltage of the received voltage square wave signal, and output the voltage square wave signal after voltage reduction to the signal demodulating circuit 32. The signal demodulation circuit 32 demodulates the lamp control adjustment signal according to the voltage square wave signal, and sends the lamp control adjustment signal to the lamp control adjustment device. In one embodiment, the predetermined encoding mode is Manchester encoding.
Referring to fig. 2, a circuit diagram of an embodiment of the switching power supply circuit is shown, in an embodiment, the control signal output device 2 includes the switching power supply circuit, and the switching power supply circuit is used for providing power for the lamp control signal output device 2. The switching power supply circuit comprises an alternating current-direct current conversion circuit 10, a direct current transformation circuit 20, a lamp control regulating signal output circuit 30 and a switching power supply output circuit 40. The ac-dc conversion circuit 10 includes an ac first input terminal, an ac second input terminal, a transformer first connection terminal, a transformer second connection terminal, a transformer third connection terminal, and a lamp control adjustment signal output circuit connection terminal. The first AC input end and the second AC input end are used for being respectively connected with a zero line N and a live line L of a power line of the controlled lamp 5. The first, second and third transformer connection terminals are connected to the dc transformer circuit 20. The lamp control adjusting signal output circuit connecting end is connected with the lamp control adjusting signal output circuit 40. The dc transformer circuit 20 includes a first connection terminal, a second connection terminal, a third connection terminal, and a fourth connection terminal. The first connection end, the second connection end and the third connection end of the dc transformation circuit are respectively connected with the first connection end, the second connection end and the third connection end of the transformer of the ac-dc conversion circuit 10. The fourth connection terminal of the dc transformer circuit 20 is connected to the switching power supply output circuit 40. The lamp control adjustment signal output circuit 30 includes a first connection end, a second connection end, a third connection end and a fourth connection end, the first connection end of the lamp control adjustment signal output circuit 30 is connected with the connection end of the lamp control adjustment signal output circuit of the ac-dc conversion circuit 10, the second connection end of the lamp control adjustment signal output circuit 30 is connected with the third connection end of the transformer of the ac-dc conversion circuit 20, the third connection end of the lamp control adjustment signal output circuit 30 is connected with the fourth connection end of the dc voltage transformation circuit 20, and the fourth connection end of the lamp control adjustment signal output circuit 30 is connected with the switching power supply output circuit 40. The switching power supply output circuit 40 comprises a first connecting end, a first output connecting end and a second output connecting end, the first output connecting end of the switching power supply output circuit 40 is connected with the fourth connecting end of the direct current transformation circuit 20, the first connecting end of the switching power supply output circuit 40 is connected with the fourth connecting end of the lamp control regulating signal output circuit 30, the first output connecting end is used for outputting a first direct current voltage signal, and the second output connecting end is used for outputting a second direct current voltage signal.
In an embodiment, the ac/dc conversion circuit 10 includes an ac/dc conversion chip DB1, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a resistor R11, a resistor R12, an inductor L11, a diode D11, and a diode D12. Two alternating current power supply input ends of the alternating current-direct current conversion chip DB1 are respectively connected with an alternating current first input end and an alternating current second input end of the alternating current-direct current conversion circuit, one direct current output end of the alternating current-direct current conversion chip DB1 is connected with one end of the inductor L11, the other direct current output end of the alternating current-direct current conversion chip DB2 is grounded, and the other end of the inductor L11 is connected with a first connecting end of the transformer. Two ends of the capacitor C11 are respectively connected with two dc output ends of the ac-dc conversion chip DB 1. One end of the capacitor C12 is connected with the first connection end of the transformer, and the other end of the capacitor C12 is grounded. One end of the capacitor C13 is connected with the lamp control adjusting signal output circuit connection end, and the other end is grounded. One end of the capacitor C14 is connected with the first connection end of the transformer, and the other end is connected with the cathode of the diode D11. One end of the resistor R11 is connected with the first connection end of the transformer, and the other end is connected with the cathode of the diode D11. One end of the resistor R12 is connected with the lamp control adjusting signal output circuit connection end, and the other end is connected with the cathode of the diode D12. The anode of the diode D11 is connected with the second connection end of the transformer, and the anode of the diode D12 is connected with the third connection end of the transformer.
In one embodiment, the dc transformer circuit 20 includes a transformer T11, a capacitor C21, a capacitor C22, a resistor R21, and a diode D21. The transformer T11 includes two sets of primary coil connection ends and one set of secondary coil connection ends, and two connection ends of a set of primary coils of the transformer T11 are respectively connected with the first connection end and the second connection end of the dc transformation circuit 20. One connecting end of the other set of primary coils of the transformer T11 is connected with the third connecting end of the direct current transformation circuit, and the other connecting end is grounded. One connection terminal of the secondary coil of the transformer T11 is connected to the anode of the diode D21, and the other connection terminal is grounded. Both ends of the capacitor C21 are connected to the ground terminals of the primary coil and the secondary coil of the transformer T11, respectively. One end of the capacitor C22 is connected to the cathode of the diode D21, and the other end is grounded. One end of the resistor R21 is connected to the cathode of the diode D21, and the other end is grounded.
In one embodiment, the lamp control adjustment signal output circuit comprises a square wave signal generating chip U11, a pulse width control chip U12, a switch control chip U13, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a capacitor C31, a capacitor C32 and a capacitor C33. The square wave signal generating chip U11 comprises a power supply connecting end VDD, a reference voltage input end FB, an output feedback connecting end COMP and a voltage signal output end DRAIN, wherein the power supply connecting end VDD is connected with a first connecting end of the lamp control adjusting signal output circuit 30, the voltage signal output end DRAIN is connected with a second connecting end of the lamp control adjusting signal output circuit 30, the output feedback connecting end COMP is connected with one end of a capacitor C31, and the other end of the capacitor C31 is grounded. The resistor R32 is connected with the capacitor C32 in series, one end of the resistor R32 after series connection is connected with the output feedback connection end COMP, and the other end of the resistor R32 after series connection is grounded. The pulse width control chip U12 comprises a first connecting end, a second connecting end, a third connecting end and a fourth connecting end, the first connecting end and the second connecting end of the pulse width control chip U12 are respectively connected with two ends of a resistor R33, the third connecting end of the pulse width control chip U12 is connected with one end of a resistor R31, the other end of the resistor R31 is connected with a voltage signal output end DRAIN, and the fourth connecting end of the pulse width control chip U12 is grounded. The switch control chip U13 comprises a first connection end, a second connection end and a third connection end, the first connection end of the switch control chip U13 is connected with the fourth connection end of the lamp control adjusting signal output circuit 30, the second connection end of the switch control chip U13 is connected with the second connection end of the pulse width control chip U12, and the third connection end of the switch control chip U13 is grounded. One end of the resistor R34 is connected with the first connection end of the pulse width control chip U12, and the other end is connected with the third connection end of the lamp control adjusting signal output circuit 30. The resistor R35 and the capacitor C33 are connected in series, one end of the series connection is connected with the second connection end of the pulse width control chip U12, and the other end of the series connection is connected with the fourth connection end of the lamp control adjusting signal output circuit 30.
In one embodiment, the switching power supply output circuit 40 includes a resistor R41, a resistor R42, a resistor R43, and a diode ZD 1. One end of the resistor R41 is connected to the first connection end of the switching power supply output circuit 40, and the other end is connected to the first output connection end of the switching power supply output circuit 40. One end of the resistor R42 is connected to the first connection terminal of the switching power supply output circuit 40, and the other end is grounded. One end of the resistor R43 is connected to the first output connection terminal of the switching power supply output circuit 40, and the other end is connected to the second output connection terminal of the switching power supply output circuit 40. The anode of the diode ZD1 is grounded, and the cathode of the diode ZD1 is connected to the second output connection terminal of the switching power supply output circuit 40.
Referring to fig. 3, a circuit diagram of a dc voltage regulating circuit in an embodiment is shown, in which the switching power supply circuit further includes a dc voltage regulating circuit for regulating a first dc voltage signal into a second dc voltage signal to provide different dc voltage sources. The direct current voltage regulating circuit comprises a voltage chip U14, a capacitor C41, a capacitor C42, a first voltage source connection end and a second voltage source connection end. The first voltage source connection end is used for inputting a first direct current voltage signal, and the second voltage source connection end is used for outputting a second direct current voltage signal. The voltage chip U14 includes input voltage link, output voltage link and earthing terminal, and the input voltage link of voltage chip U14 is connected with first voltage source link, and the output voltage link and the second voltage source link of voltage chip U14, the earthing terminal of voltage chip U14 ground connection. Capacitor C41 is connected between the first voltage source connection and ground, and capacitor C42 is connected between the second voltage source connection and ground. Referring to fig. 4, a circuit diagram of an ac power protection circuit in an embodiment is shown, in which the switching power circuit further includes an ac power protection circuit for protecting the ac-dc conversion circuit 10. The alternating current power supply protection circuit comprises a zero line connecting end N, a live line connecting end L, an adjustable resistor R47, an adjustable resistor R46, a capacitor C43, an inductor L41 and a fuse FU 2.
Referring to fig. 5, a circuit diagram of a signal boosting circuit in an embodiment is shown, the signal boosting circuit includes a resistor bank, a resistor R45, an amplifying transistor M1, a signal input terminal to be amplified, an amplified signal output terminal, and a boosting power input terminal. The signal input end to be amplified is used for inputting the voltage square wave signal, the signal output end is used for outputting the boosted voltage square wave signal, and the boosting power supply input end is used for supplying power to the amplifying transistor M1. The resistor bank includes at least one resistor R44 having one end connected to the boost supply input and the other end connected to the second pole of the amplifying transistor M1. A first pole of the amplifying transistor M1 is grounded, and a second pole of the amplifying transistor M1 is connected to the amplified signal output terminal. One end of the resistor R45 is connected with the control electrode of the amplifying transistor M1, and the other end is connected with the signal input end to be amplified. After the controller of the lamp control signal output device collects an analog signal, the controller is connected with a control electrode of the transistor M3 through the resistor R45, one end of the resistor bank is connected with 12V voltage, the other end of the resistor bank is connected with a second electrode of the transistor M1, when the connecting end of the controller of the lamp control signal output device is at a high level, the transistor M1 is conducted, the second electrode of the transistor M1 outputs a variable digital voltage signal, and the signal amplification function is achieved.
Referring to fig. 6, which is a schematic circuit diagram of a signal step-down circuit in an embodiment, the signal step-down circuit includes a resistor R51, a resistor R52, a resistor R53, a resistor R54, a resistor R55, a diode D51, an amplifying transistor M2, an amplifying transistor M3, a signal input terminal to be stepped down, a power input terminal for stepping down, and a signal output terminal for stepping down. The voltage-reducing power supply comprises a voltage-to-be-reduced signal input end, a voltage-reducing power supply input end and a voltage-reducing power supply output end, wherein the voltage-to-be-reduced signal input end is used for inputting the voltage square wave signal to be reduced, and the voltage-reducing power supply input end is used for providing power supply. The anode of the diode D51 is grounded, and the cathode is connected with the input end of the signal to be reduced. One end of the resistor R52 is connected with the input end of the signal to be reduced, and the other end is connected with the resistor R51 and the resistor 53. One end of the resistor R51 is grounded, and the other end is connected to the resistor R52. One end of the resistor R53 is connected to one end of the resistor R52, and the other end is connected to the control electrode of the amplifying transistor M3. A first pole of the amplifying transistor M3 is connected to one end of the resistor R54, a second pole of the amplifying transistor M3 is grounded, and the other end of the resistor R54 is connected to the step-down power input terminal. The control electrode of the amplifying transistor M2 is connected to the first electrode of the amplifying transistor M3, the second electrode of the amplifying transistor M2 is grounded, and the first electrode of the amplifying transistor M2 is connected to the step-down signal output terminal. One end of the resistor R55 is connected with the input end of the voltage reduction power supply, and the other end is connected with the output end of the voltage reduction signal.
Referring to fig. 7, a schematic diagram of a pin connection of a controller of a lamp control signal output device in an embodiment is shown, a controller U6 of the lamp control signal output device is configured to code-modulate the lamp control adjustment signal into a voltage square wave signal according to a preset coding scheme, and in an embodiment, the controller U6 of the lamp control signal output device is a NUC029 LAN. Referring to fig. 8, a schematic diagram of a square wave modulation output circuit of a controller of the lamp control signal output device in an embodiment is shown, where the square wave modulation circuit is used for outputting a voltage square wave signal. The controller of the lamp control signal output device outputs a PWM signal, the PWM signal is output through a pin 1 of an operational amplifier U8, a 0-10V signal is output through a common mode inductor L0 and a capacitor C61, and the PWM signal is filtered through voltage division of R61 and R62 and then is provided for sampling of a pin 2 of a controller U6. In one embodiment, operational amplifier U8 is model LM 2904. Referring to fig. 9, a schematic diagram of a square wave signal modulation output circuit of the lamp control signal output device in an embodiment is shown, where the square wave signal modulation output circuit is configured to output a modulated square wave signal and perform filtering processing on the signal. Referring to fig. 10, a schematic diagram of a pin connection of a controller of the lamp control signal receiving device in an embodiment is shown, in which the model of the controller U5 of the lamp control signal receiving device is N76E003AT20 in the embodiment.
In the embodiment of the invention, a lamp control system is disclosed, which comprises a lamp control signal generating device, a lamp control signal output device, a lamp control signal receiving device and a lamp control adjusting device. When receiving a lamp control regulation signal transmission instruction, the lamp control signal generation device modulates the lamp control regulation signal into a voltage square wave signal, and then transmits the voltage square wave signal to the lamp control signal receiving device through a power line of a controlled lamp after boosting the voltage square wave signal. The lamp control signal receiving device reduces the voltage of the received voltage square wave signal and demodulates the reduced voltage square wave signal to obtain a lamp control regulating signal. The lamp control adjusting device controls the lighting state of the controlled lamp according to the lamp control adjusting signal. The transmitting end firstly boosts the modulated lamp control adjusting signal and then transmits the boosted lamp control adjusting signal, and the receiving end decompresses the boosted lamp control adjusting signal and then demodulates the boosted lamp control adjusting signal, so that the lamp control adjusting signal is longer in transmission distance and higher in anti-jamming capability.
Example two
Referring to fig. 11, a schematic flow chart of a lamp control method in another embodiment is shown, where the lamp control method is used for adjusting the brightness of a controlled lamp, and includes:
step 110, the lamp control signal is modulated into a square wave signal.
When receiving a lamp control regulation signal transmission instruction, the lamp control signal generation device modulates the lamp control regulation signal into a voltage square wave signal according to a preset coding mode. In one embodiment, the predetermined encoding mode is Manchester encoding.
And step 120, boosting the square wave signal and then sending out the square wave signal.
The lamp control signal generating device is also used for boosting the voltage square wave signal and transmitting the boosted voltage square wave signal to the lamp control signal receiving device through a power line of the controlled lamp.
Step 130, the received square wave signal is stepped down.
And the lamp control signal receiving device is used for reducing the voltage of the received voltage square wave signal.
And step 140, demodulating the lamp control signal.
The lamp control signal receiving device demodulates the voltage square wave signal after voltage reduction to obtain a lamp control adjusting signal.
Step 150, controlling the lighting state of the lamp.
And sending the lamp control adjusting signal to a lamp control adjusting device, and controlling the lighting state of the controlled lamp by the lamp control adjusting device according to the lamp control adjusting signal. The lighting state of the controlled lamp comprises turning on, turning off, replacing brightness and/or an alarm mode.
In one embodiment, the lamp control method further includes:
and when the lamp control signal generating device does not receive a new lamp control regulating signal transmission instruction, the boosted modulated voltage square wave signal is repeatedly sent to the lamp control signal receiving device.
In the embodiment of the application, a lamp control regulating signal is amplified to a 12V, 24V or 36V direct-current voltage signal through a special hardware circuit, the voltage is used for transmitting a square wave signal, the transmission distance is increased, the anti-interference capability is improved, the receiving end enables the direct-current square wave signal of the voltage to be converted into a voltage signal meeting the work requirement of a chip through voltage reduction processing, sending end software adopts a Manchester coding mode to transmit data through a common IO port, the receiving end decodes the data signal to obtain a corresponding data signal, in order to guarantee the accuracy of the data and reduce the error rate of the data, the data sending end continuously sends the data signal when a data bus is idle, the receiving end continuously corrects the data to finally obtain a correct digital signal, and long-distance stable transmission of the lamp control regulating signal is realized.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (4)
1. A lamp control method is characterized in that the method is applied to a lamp control system to regulate the brightness of a controlled lamp of the lamp control system, and the lamp control system comprises a lamp control signal generating device, a control signal output device, a lamp control signal receiving device and a lamp control regulating device;
the lamp control signal generating device is used for outputting a lamp control adjusting signal transmission instruction to the control signal output device;
the control signal output device is used for responding to the lamp control adjusting signal transmission instruction, modulating a lamp control adjusting signal into a voltage square wave signal and transmitting the voltage square wave signal to the lamp control signal receiving device through a power line of the controlled lamp;
the lamp control signal receiving device is used for demodulating and acquiring the lamp control adjusting signal according to the received voltage square wave signal and sending the lamp control adjusting signal to the lamp control adjusting device;
the lamp control adjusting device responds to the lamp control adjusting signal to control the lighting state of the controlled lamp; the lighting state of the controlled lamp comprises on, off, replacement brightness and/or an alarm mode;
the control signal output device comprises a signal modulation circuit and a signal boosting circuit; the signal modulation circuit comprises a controller U6, and the controller U6 is used for encoding and modulating the lamp control regulation signal into the voltage square wave signal according to a preset encoding mode; the controller U6 is NUC029 LAN; the signal booster circuit is used for boosting the voltage square wave signal and transmitting the boosted voltage square wave signal to the lamp control signal receiving device through the power line of the controlled lamp;
the lamp control signal receiving device comprises a signal voltage reduction circuit and a signal demodulation circuit; the signal voltage reduction circuit is used for reducing the voltage of the received voltage square wave signal and outputting the voltage square wave signal after being reduced to the signal demodulation circuit; the signal demodulation circuit demodulates and acquires the lamp control regulation signal according to the voltage square wave signal and sends the lamp control regulation signal to the lamp control regulation device;
the signal booster circuit comprises a resistor bank, a resistor R45, an amplifying transistor M1, a signal input end to be amplified, an amplifying signal output end and a boosting power supply input end; the input end of the signal to be amplified is used for inputting the voltage square wave signal, the output end of the amplified signal is used for outputting the boosted voltage square wave signal, and the input end of the boosting power supply is used for supplying power to the amplifying transistor M1; the resistor bank comprises six resistors R44, one end of the resistor bank is connected with the input end of the boosting power supply, and the other end of the resistor bank is connected with the second pole of the amplifying transistor M1; a first pole of the amplifying transistor M1 is grounded, and a second pole of the amplifying transistor M1 is connected to the amplified signal output terminal; one end of the resistor R45 is connected with the control electrode of the amplifying transistor M1, and the other end of the resistor R45 is connected with the signal input end to be amplified;
the signal voltage reduction circuit comprises a resistor R51, a resistor R52, a resistor R53, a resistor R54, a resistor R55, a diode D51, an amplifying transistor M2, an amplifying transistor M3, a signal input end to be reduced in voltage, a voltage reduction power supply input end and a voltage reduction signal output end; the input end of the signal to be reduced is used for inputting the voltage square wave signal to be reduced, and the input end of the reducing power supply is used for providing power supply;
the anode of the diode D51 is grounded, and the cathode of the diode D51 is connected with the input end of the signal to be stepped down;
one end of the resistor R52 is connected with the input end of the signal to be reduced, and the other end is connected with the resistor R51 and the resistor 53;
one end of the resistor R51 is grounded, and the other end is connected with the resistor R52;
one end of the resistor R53 is connected with one end of the resistor R52, and the other end is connected with the control electrode of the amplifying transistor M3;
a first pole of the amplifying transistor M3 is connected with one end of the resistor R54, a second pole of the amplifying transistor M3 is grounded, and the other end of the resistor R54 is connected with the step-down power supply input end;
the control electrode of the amplifying transistor M2 is connected with the first electrode of the amplifying transistor M3, the second electrode of the amplifying transistor M2 is grounded, and the first electrode of the amplifying transistor M2 is connected with the step-down signal output end;
one end of the resistor R55 is connected with the input end of the voltage reduction power supply, and the other end of the resistor R55 is connected with the output end of the voltage reduction signal;
the preset encoding mode is Manchester encoding;
the lamp control method comprises the following steps:
responding to a lamp control adjusting signal transmission instruction, and modulating the lamp control adjusting signal into a voltage square wave signal according to a preset coding mode; the voltage value of the voltage square wave signal is 12V, 24V or 36V;
the voltage square wave signal is boosted and then transmitted to a lamp control signal receiving device through a power line of the controlled lamp;
the lamp control signal receiving device is used for reducing the voltage of the received voltage square wave signal and demodulating the voltage square wave signal after voltage reduction so as to obtain the lamp control regulating signal;
sending the lamp control adjusting signal to a lamp control adjusting device;
the lamp control adjusting device controls the lighting state of the controlled lamp according to the lamp control adjusting signal; the lighting state of the controlled lamp comprises opening, closing, replacing brightness and/or an alarm mode.
2. The lamp control method of claim 1, further comprising:
and when a new lamp control regulating signal transmission instruction is not received, the boosted modulated voltage square wave signal is repeatedly sent to the lamp control signal receiving device.
3. The lamp control method of claim 1, wherein the control signal output means includes a switching power supply circuit for supplying power to the control signal output means; the switching power supply circuit comprises an alternating current-direct current conversion circuit, a direct current transformation circuit, a lamp control regulating signal output circuit and a switching power supply output circuit;
the alternating current-direct current conversion circuit comprises an alternating current first input end, an alternating current second input end, a transformer first connecting end, a transformer second connecting end, a transformer third connecting end and a lamp control regulating signal output circuit connecting end; the alternating current first input end and the alternating current second input end are respectively connected with a zero line N and a live line L of a power line of the controlled lamp; the first connecting end of the transformer, the second connecting end of the transformer and the third connecting end of the transformer are connected with the direct current transformation circuit; the lamp control adjusting signal output circuit is connected with the lamp control adjusting signal output circuit;
the direct current transformation circuit comprises a first connecting end, a second connecting end, a third connecting end and a fourth connecting end; the first connecting end, the second connecting end and the third connecting end of the direct current transformation circuit are respectively connected with the first transformer connecting end, the second transformer connecting end and the third transformer connecting end of the alternating current-direct current conversion circuit; the fourth connecting end of the direct current transformation circuit is connected with the switching power supply output circuit;
the lamp control regulating signal output circuit comprises a first connecting end, a second connecting end, a third connecting end and a fourth connecting end; the first connecting end of the lamp control regulating signal output circuit is connected with the connecting end of the lamp control regulating signal output circuit of the alternating current-direct current conversion circuit, the second connecting end of the lamp control regulating signal output circuit is connected with the third connecting end of the transformer of the alternating current-direct current conversion circuit, and the third connecting end of the lamp control regulating signal output circuit is connected with the fourth connecting end of the direct current transformation circuit; the fourth connecting end of the lamp control regulating signal output circuit is connected with the switching power supply output circuit;
the switching power supply output circuit comprises a first connecting end, a first output connecting end and a second output connecting end; the first output connecting end of the switching power supply output circuit is connected with the fourth connecting end of the direct current transformation circuit, and the first connecting end of the switching power supply output circuit is connected with the fourth connecting end of the lamp control regulating signal output circuit; the first output connection end is used for outputting a first direct current voltage signal, and the second output connection end is used for outputting a second direct current voltage signal.
4. The lamp control method of claim 3, wherein the AC/DC conversion circuit comprises an AC/DC conversion chip DB1, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a resistor R11, a resistor R12, an inductor L11, a diode D11 and a diode D12;
two alternating current power supply input ends of the alternating current-direct current conversion chip DB1 are respectively connected with an alternating current first input end and an alternating current second input end of the alternating current-direct current conversion circuit, one direct current output end of the alternating current-direct current conversion chip DB1 is connected with one end of the inductor L11, the other direct current output end of the alternating current-direct current conversion chip DB2 is grounded, and the other end of the inductor L11 is connected with a first connecting end of the transformer;
two ends of the capacitor C11 are respectively connected with two direct current output ends of the alternating current-direct current conversion chip DB 1;
one end of the capacitor C12 is connected with the first connection end of the transformer, and the other end of the capacitor C12 is grounded;
one end of the capacitor C13 is connected with the connection end of the lamp control adjusting signal output circuit, and the other end is grounded;
one end of the capacitor C14 is connected with the first connection end of the transformer, and the other end of the capacitor C14 is connected with the negative electrode of the diode D11;
one end of the resistor R11 is connected with the first connection end of the transformer, and the other end of the resistor R11 is connected with the negative electrode of the diode D11;
one end of the resistor R12 is connected with the connection end of the lamp control adjusting signal output circuit, and the other end of the resistor R12 is connected with the cathode of the diode D12;
the anode of the diode D11 is connected with the second connection end of the transformer, and the anode of the diode D12 is connected with the third connection end of the transformer;
and/or the direct current transformation circuit comprises a transformer T11, a capacitor C21, a capacitor C22, a resistor R21 and a diode D21; the transformer T11 comprises two groups of primary coil connecting ends and one group of secondary coil connecting ends, and the two connecting ends of one group of primary coils of the transformer T11 are respectively connected with the first connecting end and the second connecting end of the direct current transformation circuit; one connecting end of the other group of primary coils of the transformer T11 is connected with the third connecting end of the direct current transformation circuit, and the other connecting end is grounded; one connection end of the secondary coil of the transformer T11 is connected with the anode of the diode D21, and the other connection end is grounded;
two ends of the capacitor C21 are respectively connected with the grounding ends of the primary coil and the secondary coil of the transformer T11;
one end of the capacitor C22 is connected with the cathode of the diode D21, and the other end of the capacitor C22 is grounded;
one end of the resistor R21 is connected with the cathode of the diode D21, and the other end of the resistor R21 is grounded;
and/or the lamp control adjusting signal output circuit comprises a square wave signal generating chip U11, a pulse width control chip U12, a switch control chip U13, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a capacitor C31, a capacitor C32 and a capacitor C33; the square wave signal generating chip U11 comprises a power supply connecting end VDD, a reference voltage input end FB, an output feedback connecting end COMP and a voltage signal output end DRAIN, wherein the power supply connecting end VDD is connected with a first connecting end of the lamp control adjusting signal output circuit, the voltage signal output end DRAIN is connected with a second connecting end of the lamp control adjusting signal output circuit, the output feedback connecting end COMP is connected with one end of a capacitor C31, and the other end of the capacitor C31 is grounded;
the resistor R32 is connected with the capacitor C32 in series, one end of the resistor R32 after series connection is connected with the output feedback connection end COMP, and the other end of the resistor R32 after series connection is grounded;
the pulse width control chip U12 comprises a first connection end, a second connection end, a third connection end and a fourth connection end; the first connecting end and the second connecting end of the pulse width control chip U12 are respectively connected with two ends of a resistor R33; a third connecting end of the pulse width control chip U12 is connected with one end of a resistor R31, and the other end of the resistor R31 is connected with the voltage signal output end DRAIN; the fourth connection end of the pulse width control chip U12 is grounded;
the switch control chip U13 comprises a first connection end, a second connection end and a third connection end, the first connection end of the switch control chip U13 is connected with the fourth connection end of the lamp control regulation signal output circuit, the second connection end of the switch control chip U13 is connected with the second connection end of the pulse width control chip U12, and the third connection end of the switch control chip U13 is grounded;
one end of the resistor R34 is connected with the first connecting end of the pulse width control chip U12, and the other end of the resistor R34 is connected with the third connecting end of the lamp control adjusting signal output circuit;
the resistor R35 and the capacitor C33 are connected in series, one end of the resistor R35 is connected with the second connecting end of the pulse width control chip U12 after the resistor R35 and the capacitor C33 are connected in series, and the other end of the resistor R35 and the capacitor C33 after the resistor R35 and the capacitor C33 are connected in series with each other and are connected with the fourth connecting end of the lamp control adjusting signal output circuit;
and/or the switching power supply output circuit comprises a resistor R41, a resistor R42, a resistor R43 and a diode ZD 1; one end of the resistor R41 is connected with the first connecting end of the switching power supply output circuit, and the other end of the resistor R41 is connected with the first output connecting end of the switching power supply output circuit;
one end of the resistor R42 is connected with the first connection end of the switching power supply output circuit, and the other end of the resistor R42 is grounded;
one end of the resistor R43 is connected with a first output connection end of the switching power supply output circuit, and the other end of the resistor R43 is connected with a second output connection end of the switching power supply output circuit;
the anode of the diode ZD1 is grounded, and the cathode of the diode ZD1 is connected with the second output connection end of the switching power supply output circuit.
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| JP4844151B2 (en) * | 2006-02-10 | 2011-12-28 | サンケン電気株式会社 | Switching power supply |
| CN103680174B (en) * | 2013-12-04 | 2015-10-28 | 无锡安邦电气有限公司 | Low dash current high power factor energy storage type countdown display circuit |
| CN204906189U (en) * | 2015-09-14 | 2015-12-23 | 上海追日电气有限公司 | Low pressure high frequency switching power supply circuit |
| CN105784001A (en) * | 2016-05-11 | 2016-07-20 | 南京工程学院 | Power line carrier communication-based multifunctional detection device |
| CN106411274A (en) * | 2016-10-14 | 2017-02-15 | 广州昌钰行信息科技有限公司 | High-speed amplifying circuit |
| CN206640830U (en) * | 2017-02-17 | 2017-11-14 | 翰力斯有限公司 | A kind of control system of indoor power line transmission |
| CN109819550A (en) * | 2019-02-18 | 2019-05-28 | 江门市蓬江区天利新科技有限公司 | It is a kind of to promote voltage to transmit the control method and its application circuit of signal |
| CN210072372U (en) * | 2019-06-21 | 2020-02-14 | 杭州深鱼物联网科技有限公司 | Multi-path high-power equipment control system |
| CN212850255U (en) * | 2020-08-31 | 2021-03-30 | 荣成歌尔微电子有限公司 | Positive and negative switch power supply |
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