CN115134978A - a light control system - Google Patents

Abstract

The present application discloses a light control system, which includes a light control signal generating device, a control signal output device, a light control signal receiving device and a light control adjusting device. The lamp control signal generating device modulates the lamp control adjustment signal into a voltage square wave signal when receiving a lamp control adjustment signal transmission instruction, and then boosts the voltage square wave signal and transmits it to the lamp control signal receiving device through the power line of the controlled lamp . The lamp control signal receiving device depressurizes the received voltage square wave signal, and demodulates the depressurized voltage square wave signal to obtain the lamp control regulation signal. The lamp control and adjustment device controls the lighting state of the controlled lamp according to the lamp control adjustment signal. Since the transmitter first boosts the modulated lamp control and adjustment signal before transmitting, while the receiver depresses the boosted control and adjustment signal and then demodulates it, so that the transmission distance of the lamp control and adjustment signal is longer, and the anti-interference ability is improved. stronger.

Description

a light control system

technical field

The invention relates to the technical field of intelligent lamp control, in particular to a lamp control system.

Background technique

Lighting is a measure of using various light sources to illuminate work and living places or individual objects. Lighting is not only to make the environment bright, but also to be adjusted according to the actual needs of the specific lighting environment (for example, lighting brightness and color, etc.). Smart lights The control system is used to adjust the brightness of the lighting. In general, the light control signal of the intelligent light control system is data communication through the power carrier communication (PLC, Power line Communication) method, but the data transmission distance of the power carrier communication is short and the anti-interference ability is poor.

SUMMARY OF THE INVENTION

The technical problem to be solved by this application is how to improve the transmission distance and anti-interference ability of the light control signal in the intelligent light control system.

According to a first aspect, a light control system is used to adjust the lighting state of a controlled light, and the light control system includes a light control signal generating device, a control signal output device, a light control signal receiving device, and a light control adjusting device;

The lamp control signal generating device is used for outputting a lamp control adjustment signal transmission instruction to the control signal output device;

The control signal output device is used to modulate a lamp control adjustment signal into a voltage square wave signal in response to the lamp control adjustment signal transmission instruction, and transmit it to the lamp control signal receiving device through the power line of the controlled lamp;

The lamp control signal receiving device 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;

The lamp control and adjustment device controls the lighting state of the controlled lamp in response to the lamp control adjustment signal; the lighting state of the controlled lamp includes turning on, turning off, changing the brightness and/or an alarm mode;

The control signal output device includes a signal modulation circuit and a signal boosting circuit; the signal modulation circuit is used to code-modulate the lamp control adjustment signal into the voltage square wave signal according to a preset coding method; the signal boosting The voltage circuit is used to boost the voltage square wave signal, and transmit 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 includes a signal step-down circuit and a signal demodulation circuit; the signal step-down circuit is used to step down the received voltage square wave signal, and reduce the voltage after the step down. The voltage square wave signal is output to the signal demodulation circuit; the signal demodulation circuit obtains the lamp control adjustment signal according to the voltage square wave signal demodulation, and sends the lamp control adjustment signal to the Light control device.

In one embodiment, the control signal output device includes a switching power supply circuit, and the switching power supply circuit is used to provide power for the lamp control signal output device; the switching power supply circuit includes an AC-DC conversion circuit, a DC transformer circuit, Lamp control adjustment signal output circuit and switching power supply output circuit;

The AC/DC conversion circuit includes an AC first input end, an AC second input end, a transformer first connection end, a transformer second connection end, a transformer third connection end and a lamp control adjustment signal output circuit connection end; the AC first connection end. An input end and an AC second input end are used to connect the neutral line N and the live line L of the power line of the controlled lamp respectively; the first connection end of the transformer, the second connection end of the transformer and the third connection end of the transformer are connected to the the direct current transformer circuit is connected; the connection end of the lamp control adjustment signal output circuit is connected with the lamp control adjustment signal output circuit;

The DC transformation circuit includes a first connection end, a second connection end, a third connection end and a fourth connection end; the first connection end, the second connection end and the third connection end of the DC transformation circuit are respectively connected with the The first connection end of the transformer, the second connection end of the transformer and the third connection end of the transformer of the AC/DC conversion circuit are connected; the fourth connection end of the DC voltage conversion circuit is connected to the output circuit of the switching power supply;

The lamp control adjustment signal output circuit 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 is connected to the AC/DC conversion circuit. The lamp control and adjustment signal output circuit connection terminal is connected, the second connection terminal of the lamp control adjustment signal output circuit is connected with the third connection terminal of the transformer of the AC-DC conversion circuit, and the third connection terminal of the lamp control adjustment signal output circuit is connected The terminal is connected to the fourth connection terminal of the DC transformer circuit; the fourth connection terminal of the lamp control and regulation signal output circuit is connected to the switching power supply output circuit;

The switching power supply output circuit includes a first connection terminal, a first output connection terminal and a second output connection terminal; the first output connection terminal of the switching power supply output circuit is connected with the fourth connection terminal of the DC transformer circuit, The first connection end of the switching power supply output circuit is connected with the fourth connection end of the lamp control and regulation signal output circuit; the first output connection end is used to output the first DC voltage signal, and the second output connection end Used to output the second DC voltage signal.

According to a second aspect, a light control method for adjusting the brightness of a controlled light, the method comprising:

The lamp control signal generating device modulates the lamp control adjustment signal into a voltage square wave signal according to a preset coding method when receiving a lamp control adjustment signal transmission instruction;

The lamp control signal generating device is also used to boost the voltage square wave signal and transmit it to the lamp control signal receiving device through the power line of the controlled lamp;

The lamp control signal receiving device depressurizes the received voltage square wave signal, and demodulates the depressurized voltage square wave signal to obtain the lamp control adjustment signal;

sending the lamp control adjustment signal to the lamp control adjustment device;

The lamp control and adjustment device controls the lighting state of the controlled lamp according to the lamp control adjustment signal; the lighting state of the controlled lamp includes turning on, off, changing brightness and/or an alarm mode.

In one embodiment, the method further includes:

When the lamp control signal generating device does not receive a new transmission instruction of the lamp control adjustment signal, the boosted and modulated voltage square wave signal is repeatedly sent to the lamp control signal receiving device.

In one embodiment, the preset encoding method is Manchester encoding.

A light control system according to the above embodiments includes a light control signal generating device, a light control signal output device, a light control signal receiving device and a light control adjusting device. The lamp control signal generating device modulates the lamp control adjustment signal into a voltage square wave signal when receiving a lamp control adjustment signal transmission instruction, and then boosts the voltage square wave signal and transmits it to the lamp control signal receiving device through the power line of the controlled lamp . The lamp control signal receiving device depressurizes the received voltage square wave signal, and demodulates the depressurized voltage square wave signal to obtain the lamp control regulation signal. The lamp control and adjustment device controls the lighting state of the controlled lamp according to the lamp control adjustment signal. Since the transmitter first boosts the modulated lamp control and adjustment signal before transmitting, while the receiver depresses the boosted control and adjustment signal and then demodulates it, so that the transmission distance of the lamp control and adjustment signal is longer, and the anti-interference ability is improved. stronger.

Description of drawings

1 is a schematic structural diagram of a light control system in an embodiment;

2 is a schematic circuit diagram of a switching power supply circuit in an embodiment;

3 is a schematic circuit diagram of a DC voltage regulating circuit in an embodiment;

4 is a schematic circuit diagram of an AC power protection circuit in an embodiment;

5 is a schematic circuit diagram of a signal boosting circuit in an embodiment;

6 is a schematic circuit diagram of a signal step-down circuit in an embodiment;

7 is a schematic diagram of the connection of the controller pins of the lamp control signal output device in an embodiment;

8 is a schematic diagram of a square wave modulation output circuit of a controller of a lamp control signal output device in an embodiment;

9 is a schematic diagram of a square wave signal modulation circuit of a lamp control signal output device in an embodiment;

10 is a schematic diagram of the connection of the controller pins of the lamp control signal receiving device in an embodiment;

FIG. 11 is a schematic flowchart of a light control method in another embodiment.

Detailed ways

The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments have used associated similar element numbers. In the following embodiments, many details are described so that the present application can be better understood. However, those skilled in the art will readily recognize that some of the features may be omitted under different circumstances, or may be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application from being overwhelmed by excessive description, and for those skilled in the art, these are described in detail. The relevant operations are not necessary, and they can fully understand the relevant operations according to the descriptions in the specification and general technical knowledge in the field.

Additionally, the features, acts, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can also be exchanged or adjusted in order in a manner obvious to those skilled in the art. Therefore, the various sequences in the specification and drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a necessary order unless otherwise stated, a certain order must be followed.

The serial numbers themselves, such as "first", "second", etc., for the components herein are only used to distinguish the described objects, and do not have any order or technical meaning. The "connection" and "connection" mentioned in this application, unless otherwise specified, include both direct and indirect connections (connections).

An embodiment of the present invention discloses a lamp control method. First, a lamp control signal generating device receives a lamp control adjustment signal transmission instruction to modulate the lamp control adjustment signal into a voltage square wave signal, and then boosts the voltage square wave signal through a The power line for controlling the lamp is transmitted to the lamp control signal receiving device. Since the transmitter first boosts the modulated lamp control adjustment signal and then transmits it, the transmission distance of the lamp control adjustment signal is longer and the anti-interference ability is stronger.

Example 1

Please refer to FIG. 1 , which is a schematic structural diagram of a light control system in an embodiment. The light control system is used to adjust the brightness of a controlled light 5 , and the light control system includes a light control signal generating device 1 and a light control signal output device 2 , a lamp control signal receiving device 3 and a lamp control adjustment device 4 . The lamp control signal generating device 1 is used for outputting a lamp control adjustment signal transmission instruction to the lamp control signal output device 2 . The control signal output device 2 is used to respond to the lamp control adjustment signal transmission instruction, modulate the lamp control adjustment signal into a voltage square wave signal, and transmit it to the lamp control signal receiving device 3 through the power line of the controlled lamp. The lamp control signal receiving device 3 is used 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 and adjustment device 4 controls the lighting state of the controlled lamp 5 in response to the lamp control adjustment signal, wherein the lighting state of the controlled lamp includes turning on, off, changing the brightness and/or an alarm mode. The control signal output device 2 includes a signal modulation circuit 21 and a signal boost circuit 22 . The signal modulation circuit 21 is used for encoding and modulating the lamp control adjustment signal into a voltage square wave signal according to a preset encoding method. The signal boosting circuit 22 is used 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 step-down circuit 31 is used to step down the received voltage square wave signal, and output the voltage square wave signal after the step-down to the signal demodulation 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 preset encoding method is Manchester encoding.

Please refer to FIG. 2 , which is a schematic circuit diagram of a switching power supply circuit in an embodiment. In an embodiment, the control signal output device 2 includes a switching power supply circuit, and the switching power supply circuit is used to provide power for the lamp control signal output device 2 . The switching power supply circuit includes an AC-DC conversion circuit 10 , a DC transformer circuit 20 , a lamp control and regulation signal output circuit 30 and a switching power supply output circuit 40 . The AC-DC conversion circuit 10 includes an AC first input end, an AC second input end, a first connection end of a transformer, a second connection end of the transformer, a third connection end of the transformer and a connection end of the lamp control adjustment signal output circuit. The AC first input terminal and the AC second input terminal are used to connect the neutral wire N and the live wire L of the power line of the lamp 5 to be controlled, respectively. The first connection end of the transformer, the second connection end of the transformer and the third connection end of the transformer are connected to the DC transformer circuit 20 . The lamp control adjustment signal output circuit connection terminal is connected to the lamp control adjustment signal output circuit 40 . The DC transformer circuit 20 includes a first connection end, a second connection end, a third connection end and a fourth connection end. The first connection end, the second connection end and the third connection end of the DC transformer circuit are respectively connected to the first connection end of the transformer, the second connection end of the transformer 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 and adjustment signal output circuit 30 includes a first connection end, a second connection end, a third connection end and a fourth connection end. The connection end of the signal output circuit is connected, 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, and the third connection end of the lamp control adjustment signal output circuit 30 is connected with the DC transformer circuit. The fourth connection end of 20 is connected, and the fourth connection end of the lamp control adjustment signal output circuit 30 is connected to the switching power supply output circuit 40 . The switching power supply output circuit 40 includes a first connection terminal, a first output connection terminal and a second output connection terminal. The first output connection terminal of the switching power supply output circuit 40 is connected to the fourth connection terminal of the DC transformer circuit 20, and the switching power supply output The first connection terminal of the circuit 40 is connected to the fourth connection terminal of the lamp control adjustment signal output circuit 30 , the first output connection terminal is used for outputting the first DC voltage signal, and the second output connection terminal is used for outputting the second DC voltage signal.

In one 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 . The two AC power input terminals of the AC/DC conversion chip DB1 are respectively connected to the AC first input terminal and the AC second input terminal of the AC/DC conversion circuit, and one DC output terminal of the AC/DC conversion chip DB1 is connected to one end of the inductor L11, and The other DC output end of the DC conversion chip DB2 is grounded, and the other end of the inductor L11 is connected to the first connection end of the transformer. Both ends of the capacitor C11 are respectively connected to the two DC output ends of the AC-DC conversion chip DB1. One end of the capacitor C12 is connected to 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 to the connection end of the lamp control and adjustment signal output circuit, and the other end is grounded. One end of the capacitor C14 is connected to the first connection end of the transformer, and the other end is connected to the cathode of the diode D11. One end of the resistor R11 is connected to the first connection end of the transformer, and the other end is connected to the cathode of the diode D11. One end of the resistor R12 is connected to the connection end of the lamp control adjustment signal output circuit, and the other end is connected to the negative electrode of the diode D12. The anode of the diode D11 is connected to the second connection terminal of the transformer, and the anode of the diode D12 is connected to the third connection terminal 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 groups of primary coil connection ends and a group of secondary coil connection ends. The two connection ends of a group of primary coils of the transformer T11 are respectively connected to the first connection end and the second connection end of the DC transformer circuit 20 . One connection end of another group of primary coils of the transformer T11 is connected to the third connection end of the DC transformer circuit, and the other connection end is grounded. One connection end of the secondary coil of the transformer T11 is connected to the anode of the diode D21, and the other connection end is grounded. Both ends of the capacitor C21 are respectively connected to the ground ends of the primary coil and the secondary coil of the transformer T11. 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 light control adjustment signal output circuit includes a square wave signal generation 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, and a capacitor C32 and capacitor C33. The square wave signal generation chip U11 includes a power supply connection terminal VDD, a reference voltage input terminal FB, an output feedback connection terminal COMP and a voltage signal output terminal DRAIN. The power supply connection terminal VDD is connected to the first connection terminal of the lamp control adjustment signal output circuit 30, and the voltage The signal output terminal DRAIN is connected to the second connection terminal of the lamp control adjustment signal output circuit 30 , the output feedback connection terminal COMP is connected to one end of the capacitor C31 , and the other end of the capacitor C31 is grounded. The resistor R32 is connected in series with the capacitor C32, one end after the series connection is connected to the output feedback connection terminal COMP, and the other end after the series connection is grounded. The pulse width control chip U12 includes a first connection end, a second connection end, a third connection end and a fourth connection end, and the first connection end and the second connection end of the pulse width control chip U12 are respectively connected to both ends of the resistor R33, The third connection end of the pulse width control chip U12 is connected to one end of the resistor R31, the other end of the resistor R31 is connected to the voltage signal output end DRAIN, and the fourth connection end of the pulse width control chip U12 is grounded. The switch control chip U13 includes 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 to the fourth connection end of the lamp control adjustment signal output circuit 30, and the third connection end of the switch control chip U13 is connected. The two connection terminals are connected to the second connection terminal of the pulse width control chip U12, and the third connection terminal of the switch control chip U13 is grounded. One end of the resistor R34 is connected to the first connection end of the pulse width control chip U12 , and the other end is connected to the third connection end of the lamp control adjustment signal output circuit 30 . The resistor R35 and the capacitor C33 are connected in series, one end of the series is connected to the second connection end of the pulse width control chip U12 , and the other end of the series is connected to the fourth connection end of the lamp control adjustment 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 ZD1. 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 end 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 end of the switching power supply output circuit 40 , and the other end is connected to the second output connection end 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 .

Please refer to FIG. 3 , which is a schematic circuit diagram of a DC voltage regulation circuit in an embodiment. In an embodiment, the switching power supply circuit further includes a DC voltage regulation circuit for adjusting the first DC voltage signal to the second DC voltage signal, to provide different DC voltage sources. The DC voltage regulating circuit includes 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 terminal is used for inputting the first DC voltage signal, and the second voltage source connection terminal is used for outputting the second DC voltage signal. The voltage chip U14 includes an input voltage connection terminal, an output voltage connection terminal and a ground terminal. The input voltage connection terminal of the voltage chip U14 is connected to the first voltage source connection terminal, and the output voltage connection terminal of the voltage chip U14 is connected to the second voltage source connection terminal. The ground terminal of the voltage chip U14 is grounded. The capacitor C41 is connected between the first voltage source connection terminal and the ground, and the capacitor C42 is connected between the second voltage source connection terminal and the ground. Please refer to FIG. 4 , which is a schematic circuit diagram of an AC power protection circuit in an embodiment. In an embodiment, the switching power supply circuit further includes an AC power protection circuit for protecting the AC/DC conversion circuit 10 . The AC power protection circuit includes a neutral line connection terminal N, a live wire connection terminal L, an adjustable resistance R47, an adjustable resistance R46, a capacitor C43, an inductance L41 and a fuse FU2.

Please refer to FIG. 5 , which is a schematic circuit diagram of a signal boosting circuit in an embodiment. 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 boost power supply input. end. The input terminal of the signal to be amplified is used to input the voltage square wave signal, the output terminal of the amplified signal is used to output the boosted voltage square wave signal, and the input terminal of the boosted power supply is used to provide power for the amplifying transistor M1. The resistor row includes at least one resistor R44, one end of the resistor row is connected to the input terminal of the boosting power supply, and the other end is connected to the second pole of the amplifying transistor M1. The first electrode of the amplifying transistor M1 is grounded, and the second electrode of the amplifying transistor M1 is connected to the output terminal of the amplified signal. One end of the resistor R45 is connected to the control electrode of the amplifying transistor M1, and the other end is connected to the input end of the signal to be amplified. After the controller of the lamp control signal output device collects the analog signal, it connects the control pole of the transistor M3 through the resistor R45. One end of the resistor row is connected to the 12V voltage, and the other end is connected to the second pole of the transistor M1. The connection of the controller of the lamp control signal output device When the terminal is at a high level, the transistor M1 is turned on, and the second pole of the transistor M1 will output an enlarged digital voltage signal to realize the signal amplification function.

Please refer to FIG. 6 , which is a schematic circuit diagram of a signal step-down circuit in one embodiment. The signal step-down circuit includes resistor R51, resistor R52, resistor R53, resistor R54, resistor R55, diode D51, amplifying transistor M2, amplifying transistor M3, and waiting The step-down signal input end, the step-down power supply input end and the step-down signal output end. The input end of the signal to be stepped down is used for inputting the voltage square wave signal to be stepped down, and the input end of the step-down power supply is used to provide power. The anode of the diode D51 is grounded, and the cathode is connected to the input terminal of the signal to be stepped down. One end of the resistor R52 is connected to the input end of the signal to be stepped down, and the other end is connected to 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 gate of the amplifying transistor M3. The first pole of the amplifying transistor M3 is connected to one end of the resistor R54, the second pole of the amplifying transistor M3 is grounded, and the other end of the resistor R54 is connected to the input end of the step-down power supply. 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 output terminal of the step-down signal. One end of the resistor R55 is connected to the input end of the step-down power supply, and the other end is connected to the output end of the step-down signal.

Please refer to FIG. 7 , which is a schematic diagram of the connection of the controller pins of the lamp control signal output device in an embodiment. The controller U6 of the lamp control signal output device is used to encode and modulate the lamp control adjustment signal according to a preset encoding method. It is a voltage square wave signal. In one embodiment, the model of the controller U6 of the lamp control signal output device is NUC029LAN. Please refer to FIG. 8 , which is a schematic diagram of a square wave modulation output circuit of the controller of the lamp control signal output device in an embodiment, and the square wave modulation circuit is used for outputting a voltage square wave signal. The controller of the lamp control signal output device outputs PWM signal through pin 1 of operational amplifier U8 to output 0-10V signal, which is filtered by common mode inductor L0 and capacitor C61, and then divided by R61 and R62 to provide sampling of pin 2 of controller U6. In one embodiment, the model of the operational amplifier U8 is LM2904. Please refer to FIG. 9 , which is a schematic diagram of a square wave signal modulation output circuit of the lamp control signal output device in an embodiment. The square wave signal modulation output circuit is used for outputting a modulated square wave signal and filtering the signal. Please refer to FIG. 10 , which is a schematic diagram of pin connections of the controller of the light control signal receiving device in one embodiment. In one embodiment, the model of the controller U5 of the light control signal receiving device is N76E003AT20.

In an embodiment of the present invention, a light control system is disclosed, including a light control signal generating device, a light control signal output device, a light control signal receiving device and a light control adjusting device. The lamp control signal generating device modulates the lamp control adjustment signal into a voltage square wave signal when receiving a lamp control adjustment signal transmission instruction, and then boosts the voltage square wave signal and transmits it to the lamp control signal receiving device through the power line of the controlled lamp . The lamp control signal receiving device depressurizes the received voltage square wave signal, and demodulates the depressurized voltage square wave signal to obtain the lamp control regulation signal. The lamp control and adjustment device controls the lighting state of the controlled lamp according to the lamp control adjustment signal. Since the transmitter first boosts the modulated lamp control and adjustment signal before transmitting, while the receiver depresses the boosted control and adjustment signal and then demodulates it, so that the transmission distance of the lamp control and adjustment signal is longer, and the anti-interference ability is improved. stronger.

Embodiment 2

Please refer to FIG. 11 , which is a schematic flowchart of a light control method in another embodiment. The light control method is used to adjust the brightness of a controlled light, including:

Step 110, modulate the lamp control signal into a square wave signal.

When receiving a lamp control adjustment signal transmission instruction, the lamp control signal generating device modulates the lamp control adjustment signal into a voltage square wave signal according to a preset encoding method. In one embodiment, the preset encoding method is Manchester encoding.

Step 120, the square wave signal is boosted and then sent out.

The lamp control signal generating device is also used to boost the voltage square wave signal and transmit it to the lamp control signal receiving device through the power line of the controlled lamp.

Step 130, step down the received square wave signal.

The lamp control signal receiving device steps down the received voltage square wave signal.

Step 140, demodulate the lamp control signal.

The lamp control signal receiving device demodulates the reduced voltage square wave signal to obtain the lamp control adjustment signal.

Step 150, controlling the lighting state of the lamp.

The lamp control adjustment signal is sent to the lamp control adjustment device, and the lamp control adjustment device controls the lighting state of the controlled lamp according to the lamp control adjustment signal. Wherein, the lighting state of the controlled light includes turning on, turning off, changing the brightness and/or an alarm mode.

In one embodiment, the light control method further includes:

When the lamp control signal generating device does not receive a new lamp control adjustment signal transmission instruction, it repeatedly sends the boosted and modulated voltage square wave signal to the lamp control signal receiving device.

In the embodiment of the application itself, the lamp control adjustment signal is amplified to a 12V, 24V or 36V DC voltage signal through a special hardware circuit, and the square wave signal is transmitted with this voltage to increase the transmission distance and improve the anti-interference ability. The DC square wave signal of this voltage is converted into a voltage signal that satisfies the operation of the chip through the step-down processing. The software of the sending end uses the encoding method of Manchester encoding to transmit data through the ordinary IO port, and the receiving end decodes to obtain the corresponding data signal. In order to ensure the accuracy of the data The data transmission end continuously sends data signals when the data bus is idle, and the receiving end receives the data and continuously corrects, finally obtains the correct digital signal, and realizes the long-distance stable transmission of the light control adjustment signal.

The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention, and are not intended to limit the present invention. For those skilled in the art to which the present invention pertains, according to the idea of the present invention, several simple deductions, modifications or substitutions can also be made.

Claims (3)

1. A lamp control system is used for adjusting the lighting state of a controlled lamp and is characterized by comprising a lamp control signal generating device, a control signal output device, a lamp control signal receiving device and a lamp control adjusting 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 a 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 reduction 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 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 boost power supply input end 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 with the amplified signal output end; 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 of the resistor R51 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.

2. The lamp control system of claim 1, wherein the control signal output means comprises a switching power supply circuit for providing 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 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 connection end of 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.

3. The lamp control system of claim 2, 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 connecting end of a secondary coil of the transformer T11 is connected with the anode of the diode D21, and the other connecting 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 the first output connection end of the switching power supply output circuit, and the other end of the resistor R43 is connected with the 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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