CN117395828A - Two-wire carrier point control LED system - Google Patents

Abstract

A two-wire carrier point-controlled light-emitting diode system includes a micro-control circuit, an AC power detector and a plurality of light-emitting diode lamps; the micro-control circuit includes a first switch and a micro-control module. When it is necessary to control the LED lamps to emit light, the micro-control module detects the voltage state of an AC power supply through the AC power supply detector; the micro-control module continuously changes along the voltage of the AC power supply within a half-wave cycle. The conductive state of the first switch is switched to change the voltage transmitted to the LED lamps to generate a plurality of lighting control signals; the LED lamps are configured to receive the lighting control signals and act according to the lighting control signals glow. The control lines of the LED system are omitted to save wires and costs.

Description

Two-wire carrier point-controlled light-emitting diode system

Technical field

The invention relates to a carrier point controlled light emitting diode system, in particular to a two-wire carrier point controlled light emitting diode system.

Background technique

A related-art LED system mainly includes a related-art microcontrol circuit and a plurality of related-art LED lamps; the related-art LED lamps receive a power supply provided by a power supply through a plurality of power lines. , and simultaneously receive a luminous data provided by the micro-control circuit of the related technology through a plurality of control lines; in each of the light-emitting diode lamps of the related technology, the power supply and the related power provided by the power supply are received. After the luminescent data is provided by the micro-control circuit of the related art, each of the light-emitting diode lamps of the related technologies emits light according to the luminescent data.

However, the price of raw materials is increasing day by day. If the LED system of the related technology contains more of the LED lamps of the related technology, the LED system of the related technology requires more of the control lines, which will undoubtedly increase The cost of the related technology light-emitting diode system.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide a two-wire carrier point-controlled light-emitting diode system.

In order to achieve the above object of the present invention, the two-wire carrier point-controlled light-emitting diode system of the present invention is applied to an AC power supply. The two-wire carrier point-controlled light-emitting diode system includes: a micro control circuit; an AC power supply detector, Electrically connected to the micro-control circuit; and a plurality of light-emitting diode lamps, electrically connected to the micro-control circuit and the AC power detector, and receiving the AC power as a working power source, wherein the micro-control circuit includes: a The first switch is electrically connected to the LED lamps; and a micro control module is electrically connected to the AC power detector and the first switch, wherein when the LED lamps need to be controlled to emit light, the The micro control module detects the voltage state of the AC power supply through the AC power supply detector; the micro control module continuously switches the conduction state of the first switch along the voltage change of the AC power supply within a half-wave cycle to change The voltages transmitted to the LED lamps generate a plurality of lighting control signals; the LED lamps are configured to receive the lighting control signals and emit light according to the lighting control signals.

Optionally, the signal strength of the light emitting control signals is sufficient for the LED lamps to recognize and is greater than the reset voltage of the LED lamps.

Optionally, the AC power detector includes: a detection resistor, electrically connected to the micro-control module and the light-emitting diode lamps; and a detection capacitor, electrically connected to the micro-control module, the detection capacitor. The resistor and the first switch, wherein the micro control module detects the voltage state of the AC power supply through the detection resistor and the detection capacitor.

Optionally, the microcontrol module includes: a microcontroller, electrically connected to the first switch; a first clamping diode, electrically connected to the microcontroller; a second clamping diode, electrically connected to the microcontroller and the first clamping diode; and a resistor electrically connected to the detection resistor, the detection capacitor, the microcontroller, the first clamping diode and the second clamping diode, Wherein, the first clamping diode and the second clamping diode clamp the AC power supply to obtain a first square wave signal and transmit the first square wave signal to the microcontroller to enable the microcontroller to determine and detect The voltage state of the AC power supply is measured, wherein the microcontrol circuit further includes: a microcontroller working voltage source electrically connected to the microcontroller and the first clamping diode.

Optionally, it also includes: a first capacitor electrically connected to the microcontroller operating voltage source, the detection capacitor, the microcontroller and the first switch; a rectifier diode electrically connected to the microcontroller The device operating voltage source and the first capacitor; a clamping Zener diode electrically connected to the detection capacitor, the microcontroller, the first switch, the first capacitor and the rectifier diode; and a second capacitor , electrically connected to the detection resistor, the light-emitting diode lamps, the rectifier diode and the clamping Zener diode.

Optionally, the microcontrol circuit also includes: a second switch electrically connected to the light-emitting diode lamps, the microcontroller and the first switch, wherein the microcontrol module changes along the voltage of the AC power supply The conductive state of the first switch or the conductive state of the second switch is continuously switched within a full wave cycle to change the voltage transmitted to the LED lamps to generate the lighting control signals.

Optionally, it also includes: a first capacitor electrically connected to the microcontroller operating voltage source, the detection capacitor, the microcontroller and the first switch; a rectifier diode electrically connected to the detection Resistors and the light-emitting diode lamps; a clamping Zener diode, electrically connected to the microcontroller operating voltage source, the detection capacitor, the microcontroller, the first switch and the first capacitor; a second a capacitor, electrically connected to the detection capacitor, the microcontroller, the first switch, the first capacitor, the rectifier diode and the clamping Zener diode; and a voltage dividing resistor, electrically connected to the microcontroller The device operating voltage source, the first capacitor, the rectifier diode, the clamping Zener diode and the second capacitor, wherein the clamping Zener diode is used to clamp the AC power supply to supply power to the microcontroller.

Optionally, each of the LED lamps includes: a voltage positive terminal, electrically connected to the AC power detector; a voltage negative terminal, electrically connected to the micro control circuit; a LED driver, electrically electrically connected to the negative terminal of the voltage; a first Zener diode, electrically connected to the negative terminal of the voltage and the LED driver; a third capacitor, electrically connected to the negative terminal of the voltage, the LED driver and the third A Zener diode; a lamp terminal resistor, electrically connected to the LED driver, the first Zener diode and the third capacitor; a first diode, electrically connected to the LED driver, the first Zener diode, the third capacitor and the terminal resistor of the lamp; a fourth capacitor, electrically connected to the positive terminal of the voltage; a second Zener diode, electrically connected to the negative terminal of the voltage, the light-emitting diode driver, the The first Zener diode, the third capacitor and the fourth capacitor; and a second diode electrically connected to the light-emitting diode driver, the lamp end resistor, the first diode, the fourth capacitor and The second Zener diode, wherein the first Zener diode, the third capacitor, the lamp terminal resistor, the first diode, the fourth capacitor, the second Zener diode and the second diode The tube processes the light-emitting control signals to obtain a second square wave signal; the second square wave signal is between a first breakdown voltage of the first Zener diode and a second breakdown voltage of the second Zener diode. between.

Optionally, each of the LED lamps further includes: a red LED electrically connected to the LED driver, the lamp terminal resistor, the first diode and the second diode; a green LED a light-emitting diode, electrically connected to the light-emitting diode driver, the lamp terminal resistor, the first diode, the second diode and the red light-emitting diode; and a blue light-emitting diode, electrically connected to the light-emitting diode The driver, the lamp terminal resistor, the first diode, the second diode, the red light-emitting diode and the green light-emitting diode.

Optionally, if the signal length of the light-emitting control signals is greater than the half-wave period, the micro-control module switches the first switch in the next half-wave period with the same AC power supply voltage change to complete generating the light-emitting control signals. .

Optionally, if the signal length of the light-emitting control signals is greater than the half-wave period, the micro-control module switches the first switch or the second switch in the next subsequent half-wave period to complete generating the light-emitting lights. control signal.

Optionally, the micro control module first switches the first switch and then switches the second switch to complete generating the lighting control signals; wherein, when one of the first switch and the second switch is switched, The other one of the first switch and the second switch stops switching.

Optionally, the first switch is connected in series to the second switch; when the AC power supply is in the positive half cycle, the micro control module switches the first switch to generate the lighting control signals; when the AC power supply is in the negative half cycle , the micro control module switches the second switch to generate the lighting control signals.

The effect of the present invention is to omit the control lines of the light-emitting diode system to save wires and costs.

In order to further understand the technology, means and effects adopted by the present invention to achieve the intended purpose, please refer to the following detailed description and drawings of the present invention. It is believed that the purpose, features and characteristics of the present invention can be understood in depth and concretely. However, the attached drawings are only for reference and illustration, and are not intended to limit the present invention.

Description of the drawings

Figure 1 is a block diagram of the first specific embodiment of the two-wire carrier point controlled light emitting diode system of the present invention.

FIG. 2 is a block diagram of the second specific embodiment of the two-wire carrier point-controlled light-emitting diode system of the present invention.

FIG. 3 is a circuit diagram of a specific embodiment of the microcontrol circuit and the AC power detector for the second specific embodiment of the two-wire carrier point-controlled light-emitting diode system of the present invention.

FIG. 4 is a circuit diagram of another specific embodiment of the microcontrol circuit and the AC power detector for the second specific embodiment of the two-wire carrier point-controlled light-emitting diode system of the present invention.

Figure 5 is a circuit diagram of the light-emitting diode lamp of the present invention.

FIG. 6 is a waveform diagram of a specific embodiment of using the first switch of FIG. 3 to generate the lighting control signals.

FIG. 7 is a waveform diagram of a specific embodiment of using the first switch and the second switch of FIG. 4 to generate the light-emitting control signals.

FIG. 8 is a waveform diagram of a specific embodiment of the present invention after the light-emitting control signals are processed by the light-emitting diode lamp.

In the picture:

10: Two-wire carrier point-controlled light-emitting diode system; 102: Microcontrol circuit; 104: AC power detector; 106: Light-emitting diode lamps; 108: AC power supply; 110: Luminous control signal; 112: Microcontroller; 114 : first switch; 116: first clamping diode; 118: second clamping diode; 120: resistor; 122: microcontroller operating voltage source; 124: detection resistor; 126: detection capacitor; 128: first Capacitor; 130: Rectifier diode; 132: Clamp Zener diode; 134: Second capacitor; 136: Second switch; 138: Voltage dividing resistor; 140: Voltage positive terminal; 142: Voltage negative terminal; 144: Light emitting diode driver ; 146: The first Zener diode; 148: The third capacitor; 150: The lamp terminal resistance; 152: The first diode; 154: The fourth capacitor; 156: The second Zener diode; 158: The second diode ; 160: red light-emitting diode; 162: green light-emitting diode; 164: blue light-emitting diode; 166: address data; 168: light-emitting data; 170: AC power supply; 172: local address code; 174: pulse signal; 176: Micro control module; a1: Default value.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific examples, so that those skilled in the art can better understand the present invention and implement it, but the examples are not intended to limit the present invention.

Please refer to FIG. 1 , which is a block diagram of a first specific embodiment of the two-wire carrier point controlled light emitting diode system 10 of the present invention. A two-wire carrier point-controlled LED system 10 of the present invention is applied to an AC power supply 108. The two-wire carrier point-controlled LED system 10 includes a micro-control circuit 102, an AC power supply detector 104 and a plurality of In the LED lamps 106, the above-mentioned components are electrically connected to each other; the LED lamps 106 receive the AC power supply 108 as a working power supply. The LED lamps 106 are configured to receive a plurality of light-emitting control signals 110 and emit light according to the light-emitting control signals 110 (that is, the LED lamps 106 are driven by the light-emitting control signals 110 to emit light changes, which will be detailed later. description). The AC power supply 108 can be a 120-volt AC power supply but is not limited thereto; the LED lamps 106 are connected in parallel with each other.

Furthermore, please refer to FIG. 2 , which is a block diagram of a second specific embodiment of the two-wire carrier point-controlled light-emitting diode system 10 of the present invention; the components shown in FIG. 2 are the same as those shown in FIG. 1 . For the sake of simplicity, the description will not be repeated here. The two-wire carrier point controlled LED system 10 also includes an AC power supply 170. The AC power supply 170 is electrically connected to the micro control circuit 102, the AC power detector 104 and the LED lamps 106. ; The AC power supply 170 is used to generate and output the AC power 108. Each of the LED lamps 106 includes a local address code 172, and the lighting control signal 110 includes an address data 166 and a lighting data 168. When each of the LED lamps 106 receives the lighting control signals 110, each of the LED lamps 106 is configured to compare the address data 166 with the local address code 172; if the address If the data 166 is equal to the local address code 172, the LED lamp 106 is configured to emit light according to the luminescence data 168; if the address data 166 is not equal to the local address code 172, the LED lamp 106 is configured to Ignore the glow data168.

Please refer to Figure 3, which is a circuit diagram of a specific embodiment of the micro-control circuit 102 and the AC power detector 104 for the second specific embodiment of the two-wire carrier point-controlled light-emitting diode system 10 of the present invention; Figure 3 The components shown are the same as those shown in FIG. 2 for the sake of simplicity, so their description will not be repeated here. The two-wire carrier point controlled LED system 10 also includes a first capacitor 128, a rectifier diode 130, a clamping Zener diode 132 and a second capacitor 134; the micro control circuit 102 includes a first switch 114, a microcontroller module 176 and a microcontroller operating voltage source 122; the microcontroller module 176 includes a microcontroller 112, a first clamping diode 116, a second clamping diode 118 and a resistor 120; the AC power supply The detector 104 includes a detection resistor 124 and a detection capacitor 126; these components are electrically connected to each other. The model of the microcontroller 112 in FIG. 3 may be, for example, but the present invention is not limited to DJ6244 or DJ6246, or any microcontroller that can achieve the same function.

When it is necessary to control the LED lamps 106 to emit light, the micro-control module 176 detects the voltage state of the AC power supply 108 through the AC power supply detector 104; the micro-control module 176 changes in a voltage along the voltage of the AC power supply 108. The conductive state of the first switch 114 is continuously switched within a half-wave period to change the voltage transmitted to the LED lamps 106 to generate the lighting control signals 110 .

The micro control module 176 detects the voltage state of the AC power supply 108 through the detection resistor 124 and the detection capacitor 126 . The first clamping diode 116 and the second clamping diode 118 clamp the AC power supply 108 to obtain a first square wave signal and transmit the first square wave signal to the microcontroller 112 so that the microcontroller 112 Determine and detect the voltage status of the AC power supply 108 .

The signal strength of the light emitting control signals 110 is sufficient for the LED lamps 106 to recognize and is greater than the reset voltage of the LED lamps 106 . Here, the significance of the signal strength of the light-emitting control signals 110 being strong enough is that: first, the potential difference (for example, 2~3 volts) is large enough to allow the LED lamps 106 to recognize the light-emitting control signals 110. If If the potential difference is too small, the LED lamps 106 cannot recognize the light-emitting control signals 110; secondly, the lowest voltage value of the signal strength of the light-emitting control signals 110 is greater than the reset voltage of the LED lamps 106, so it can Prevent the LED lamps 106 from being reset.

Please refer to Figure 6, which is a waveform diagram of a specific embodiment of using the first switch 114 of Figure 3 to generate the light-emitting control signals 110; a preset value a1 shown in Figure 6 (that is, the above-mentioned (the signal strength of the light-emitting control signals 110 is strong enough) may be an operating voltage value of the light-emitting diode lamps 106. The light-emitting control signals 110 include a plurality of pulse signals 174. If the signal length of the light-emitting control signals 110 is greater than the half-wave period, the micro-control module 176 switches the first switch 114 in the next half-wave period with the same AC power supply voltage change to complete generating the light-emitting control signals 110 ; Here, the signal length is defined as the signal length of all the light emitting control signals 110 (that is, all the pulse signals 174). Furthermore, the present invention can also be applied to AC power after rectification, so there is no need to wait for a half-wave cycle interval.

Please refer to FIG. 4 , which is a circuit diagram of another specific embodiment of the micro-control circuit 102 and the AC power detector 104 for the second specific embodiment of the two-wire carrier point-controlled light-emitting diode system 10 of the present invention; FIG. The components shown in Figure 4 are the same as those shown in Figure 3 for the sake of simplicity, so their description will not be repeated here. The two-wire carrier point controlled LED system 10 also includes a first capacitor 128, a rectifier diode 130, a clamping Zener diode 132, a second capacitor 134 and a voltage dividing resistor 138; the micro control circuit 102 also A second switch 136 is included; the above-mentioned components are electrically connected to each other. The model of the microcontroller 112 in FIG. 4 may be, for example, but the present invention is not limited to DJ6374, or any microcontroller that can achieve the same function. The clamping Zener diode 132 is used to clamp the AC power supply 108 to supply power to the microcontroller 112 .

The micro control module 176 continuously switches the conduction state of the first switch 114 or the conduction state of the second switch 136 along the voltage change of the AC power supply 108 within a full wave cycle to change the light emitting light transmitted to the The voltage of the diode lamp 106 is used to generate the lighting control signals 110 . The first switch 114 is connected in series to the second switch 136; when the AC power supply 108 is in the positive half cycle, the micro control module 176 switches the first switch 114 to generate the lighting control signals 110; when the AC power supply 108 is in the positive half cycle During the negative half cycle, the micro control module 176 switches the second switch 136 to generate the lighting control signals 110 .

Please refer to FIG. 7 , which is a waveform diagram of a specific embodiment of using the first switch 114 and the second switch 116 of FIG. 4 to generate the lighting control signals 110 . If the signal length of the luminescence control signals 110 is greater than the half-wave period, the micro-control module 176 switches the first switch 114 or the second switch 136 in the next half-wave period to complete generating the luminescence. The control signal 110; that is, is the switching of positive and negative half cycles (different voltage changes); the micro-control module 176 first switches the first switch 114 and then switches the second switch 136 to complete generating the light-emitting control signals 110; when When one of the first switch 114 and the second switch 136 is switched, the other of the first switch 114 and the second switch 136 stops switching.

Furthermore, in Figures 3 and 4, the microcontroller operating voltage source 122 is connected to the microcontroller 112 and the cathode of the first clamping diode 116; the anode of the first clamping diode 116 is connected to the microcontroller. The controller 112, the cathode of the second clamping diode 118 and one end of the resistor 120; the anode of the second clamping diode 118 is grounded; the other end of the resistor 120 is connected to the AC power detector 104. The detection resistor 124 can be, for example, but the present invention is not limited to a 1M ohm resistor or a 2M ohm resistor. The AC power detector 104 does not need to include the detection capacitor 126. The first capacitor 128 can be, for example, but the invention is not limited to this. The invention is not limited to a 10uF capacitor. The clamping Zener diode 132 can be, for example, but the invention is not limited to a 5.1 volt Zener diode. The model of the rectifier diode 130 in Figure 3 can be, for example, but the invention is not limited to 1N4148. , the model of the rectifier diode 130 in Figure 4 can be, for example, but the present invention is not limited to 1N4007. The second capacitor 134 in Figure 3 can be, for example, but the present invention is not limited to, a 0.68uF/250 volt capacitor. The model of Figure 4 The second capacitor 134 may be, for example but not limited to, a 47uF capacitor.

Please refer to FIG. 5 , which is a circuit diagram of the LED lamp 106 of the present invention. The components shown in FIG. 5 are the same as those shown in FIG. 2 for the sake of simplicity, so their description will not be repeated here. Each of the LED lamps 106 includes a voltage positive terminal 140, a voltage negative terminal 142, a LED driver 144, a first Zener diode 146, a third capacitor 148, a lamp terminal resistor 150, a third A diode 152, a fourth capacitor 154, a second Zener diode 156, a second diode 158, a red light-emitting diode 160, a green light-emitting diode 162 and a blue light-emitting diode 164; the above The components are electrically connected to each other. The model of the LED driver 144 in FIG. 5 can be, for example, but the present invention is not limited to DJ5179 or ST2599A, or any LED driver that can achieve the same function.

The first Zener diode 146, the third capacitor 148, the lamp terminal resistor 150, the first diode 152, the fourth capacitor 154, the second Zener diode 156 and the second diode 158 process The lighting control signals 110 are used to obtain a second square wave signal; the second square wave signal is between a first breakdown voltage (for example, 2 volts) of the first Zener diode 146 and the second Zener diode 156 between a second breakdown voltage (for example, 5.1 volts); please refer to FIG. 8 , which is a waveform diagram of a specific embodiment of the present invention after the lighting control signals 110 are processed by the LED lamp 106 (i.e. , the second square wave signal).

Furthermore, the LED driver 144 is configured to store the local address code 172; the first Zener diode 146 can be, for example but not limited to, a 2-volt Zener diode, and the third capacitor 148 can be, for example, a 2-volt Zener diode. However, the present invention is not limited to a 10uF capacitor. The model of the first diode 152 can be, for example, but the present invention is not limited to 1N4148. The fourth capacitor 154 can be, for example, but the present invention is not limited to, a 0.68uF/250 volt capacitor. Capacitor, the second Zener diode 156 can be, for example but not limited to, a 5.1 volt Zener diode, and the model of the second diode 158 can be, for example but not limited to, 1N4148.

Furthermore, the voltage negative terminal 142 is connected to the LED driver 144, the anode of the first Zener diode 146, one end of the third capacitor 148 and the anode of the second Zener diode 156, and the voltage positive terminal 140 is connected to to one end of the fourth capacitor 154, and the other end of the fourth capacitor 154 is connected to the cathode of the second Zener diode 156 and the anode of the second diode 158, and the cathode of the second diode 158 is connected to The LED driver 144, one end of the lamp terminal resistor 150, the cathode of the first diode 152, the anode of the red LED 160, the anode of the green LED 162 and the anode of the blue LED 164, The other end of the lamp terminal resistor 150 is connected to the cathode of the first Zener diode 146, the other end of the third capacitor 148 and the anode of the first diode 152, the cathode of the red light-emitting diode 160, the green light-emitting diode The cathode of 162 and the cathode of the blue LED 164 are connected to the LED driver 144 .

The effect of the present invention is to omit the control lines of the light-emitting diode system to save wires and costs.

The above-described embodiments are only preferred embodiments to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be determined by the claims.

Claims (13)

1. A two-wire carrier point control LED system is applied to an alternating current power supply, which is characterized in that the two-wire carrier point control LED system comprises:

a micro control circuit;

an alternating current power detector electrically connected to the micro control circuit; and

A plurality of LED lamps electrically connected to the micro-control circuit and the AC power detector and receiving the AC power as a working power,

wherein, this micro-control circuit includes:

the first switch is electrically connected to the LED lamps; and

A micro control module electrically connected to the AC power detector and the first switch,

when the LED lamps need to be controlled to emit light, the micro control module detects the voltage state of the alternating current power supply through the alternating current power supply detector; the micro control module continuously switches the on state of the first switch along the voltage change of the alternating current power supply in a half-wave period so as to change the voltage transmitted to the LED lamps and generate a plurality of luminous control signals; the LED lamps are configured to receive the light-emitting control signals and emit light according to the light-emitting control signals.

2. The two-wire carrier point-controlled led system of claim 1, wherein the signal strength of the light emission control signals is sufficient to identify the led lamps and is greater than the reset voltage of the led lamps.

3. The two-wire carrier-point-controlled led system of claim 1, wherein the ac power detector comprises:

the detection resistor is electrically connected to the micro control module and the LED lamps; and

A detection capacitor electrically connected to the micro control module, the detection resistor and the first switch,

the micro control module detects the voltage state of the alternating current power supply through the detection resistor and the detection capacitor.

4. The two-wire carrier-point-controlled led system of claim 3, wherein the micro-control module comprises:

a microcontroller electrically connected to the first switch;

a first clamping diode electrically connected to the microcontroller;

a second clamping diode electrically connected to the microcontroller and the first clamping diode; and

A resistor electrically connected to the sensing resistor, the sensing capacitor, the microcontroller, the first clamping diode and the second clamping diode,

wherein the first clamping diode and the second clamping diode clamp the AC power supply to obtain a first square wave signal and transmit the first square wave signal to the microcontroller to enable the microcontroller to judge and detect the voltage state of the AC power supply,

wherein, this micro-control circuit still contains:

and a microcontroller operating voltage source electrically connected to the microcontroller and the first clamping diode.

5. The two-wire carrier point-controlled led system of claim 4, further comprising:

the first capacitor is electrically connected to the working voltage source of the microcontroller, the detection capacitor, the microcontroller and the first switch;

a rectifier diode electrically connected to the microcontroller operating voltage source and the first capacitor;

a clamping zener diode electrically connected to the detection capacitor, the microcontroller, the first switch, the first capacitor and the rectifying diode; and

And the second capacitor is electrically connected to the detection resistor, the LED lamps, the rectifier diode and the clamping zener diode.

6. The two-wire carrier-point-controlled led system of claim 4, wherein the micro-control circuit further comprises:

a second switch electrically connected to the LED lamps, the microcontroller and the first switch,

the micro control module continuously switches the on state of the first switch or the on state of the second switch along the voltage variation of the alternating current power supply in a full-wave period so as to change the voltage transmitted to the LED lamps and generate the light-emitting control signals.

7. The two-wire carrier point-controlled led system of claim 6, further comprising:

the first capacitor is electrically connected to the working voltage source of the microcontroller, the detection capacitor, the microcontroller and the first switch;

the rectifier diode is electrically connected to the detection resistor and the LED lamps;

a clamping zener diode electrically connected to the microcontroller operating voltage source, the detection capacitor, the microcontroller, the first switch and the first capacitor;

a second capacitor electrically connected to the detecting capacitor, the microcontroller, the first switch, the first capacitor, the rectifying diode and the clamping zener diode; and

A voltage dividing resistor electrically connected to the working voltage source of the microcontroller, the first capacitor, the rectifier diode, the clamping zener diode and the second capacitor,

the clamping zener diode is used for clamping the alternating current power supply to supply power to the microcontroller.

8. The two-wire carrier-point-control led system of claim 1, wherein each of the led lamps comprises:

a voltage positive terminal electrically connected to the AC power detector;

a negative voltage terminal electrically connected to the micro control circuit;

a light emitting diode driver electrically connected to the negative voltage terminal;

a first Zener diode electrically connected to the negative voltage terminal and the LED driver;

a third capacitor electrically connected to the negative voltage terminal, the LED driver and the first Zener diode;

a lamp end resistor electrically connected to the LED driver, the first Zener diode and the third capacitor;

the first diode is electrically connected to the light-emitting diode driver, the first Zener diode, the third capacitor and the lamp end resistor;

a fourth capacitor electrically connected to the positive voltage terminal;

a second Zener diode electrically connected to the negative voltage terminal, the LED driver, the first Zener diode, the third capacitor and the fourth capacitor; and

A second diode electrically connected to the LED driver, the lamp end resistor, the first diode, the fourth capacitor and the second Zener diode,

the first Zener diode, the third capacitor, the lamp end resistor, the first diode, the fourth capacitor, the second Zener diode and the second diode process the light-emitting control signals to obtain a second square wave signal; the second square wave signal is between a first breakdown voltage of the first Zener diode and a second breakdown voltage of the second Zener diode.

9. The two-wire carrier-point-control led system of claim 8, wherein each of the led lamps further comprises:

the red light-emitting diode is electrically connected to the light-emitting diode driver, the lamp end resistor, the first diode and the second diode;

the green light-emitting diode is electrically connected to the light-emitting diode driver, the lamp end resistor, the first diode, the second diode and the red light-emitting diode; and

The blue light-emitting diode is electrically connected to the light-emitting diode driver, the lamp end resistor, the first diode, the second diode, the red light-emitting diode and the green light-emitting diode.

10. The two-wire carrier point-controlled LED system of claim 1 wherein if the signal length of the light-emitting control signals is longer than the half-wave period, the micro-control module switches the first switch in the next half-wave period with the same AC power voltage variation to complete the generation of the light-emitting control signals.

11. The two-wire carrier point-controlled LED system of claim 6, wherein if the signal length of the light-emitting control signals is longer than the half-wave period, the micro-control module switches the first switch or the second switch in the next successive half-wave period to complete the generation of the light-emitting control signals.

12. The two-wire carrier point control LED system of claim 11, wherein the micro control module switches the first switch and then switches the second switch sequentially to complete the generation of the light emission control signals; when one of the first switch and the second switch is switched, the other of the first switch and the second switch stops switching.

13. The two-wire carrier-point-controlled led system of claim 6, wherein the first switch is connected in series to the second switch; when the alternating current power supply is in the positive half cycle, the micro control module switches the first switch to generate the light-emitting control signals; when the alternating current power supply is in the negative half cycle, the micro control module switches the second switch to generate the light-emitting control signals.