CN216673357U - Host communication lighting circuit and lighting system - Google Patents

Abstract

The utility model discloses a host communication lighting circuit and a lighting system, wherein the host communication lighting circuit comprises an alternating current input end which is connected with a mains supply loop; the alternating current output end is connected with the slave lighting drive circuit, and the control end of the slave lighting drive circuit is connected with the lamp; the main controller is used for outputting an opening/closing signal; the controlled end of the slave communication control circuit is connected with the master controller, the input end of the slave communication control circuit is connected with the alternating current input end, the output end of the slave communication control circuit is connected with the alternating current output end, and the slave communication control circuit is used for controlling the alternating current input end and the alternating current output end to be disconnected or closed according to the disconnection/closing signal output by the master controller, generating a corresponding control signal and controlling the slave lighting driving circuit to work so as to drive the lamp to work. The technical scheme of the utility model realizes the reduction of communication lines, thereby reducing the production cost, realizing the function diversification and avoiding the time difference among the slave machines.

Description

Host communication lighting circuit and lighting system

Technical Field

The utility model relates to the field of illumination, in particular to a host communication illumination circuit and an illumination system.

Background

With the development of scientific technology, the intelligent control mode of home furnishing is also continuously improved, the intelligent control system is added into a plurality of low-end products at present, and the communication modes among intelligent products are diversified. The traditional commercial power product generally adopts wired communication, and under the condition of wired communication, the communication between a host and a slave is always required to be connected with at least one special communication line, so that the circuit cost is increased, and the circuit complexity is increased; if the slave machines are multiple, at least one communication line may be further added for transmitting signals to the slave machines of the later stage and performing operations such as cascading, and the communication mode has the problems of single changing function and gradual time difference among the slave machines along with the increase of the use time.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a host communication lighting circuit and a lighting system, aiming at reducing communication lines, thereby reducing the production cost, realizing the function diversification and avoiding the time difference among slaves.

In order to achieve the above object, the present invention provides a host communication lighting circuit, including:

the alternating current input end is connected with the mains supply loop;

the alternating current output end is connected with the slave lighting drive circuit, and the control end of the slave lighting drive circuit is connected with the lamp;

a main controller for outputting an open/close signal;

the controlled end of the slave communication control circuit is connected with the master controller, the input end of the slave communication control circuit is connected with the alternating current input end, the output end of the slave communication control circuit is connected with the alternating current output end, and the slave communication control circuit is used for controlling the alternating current input end and the alternating current output end to be opened or closed according to an opening/closing signal output by the master controller, generating a corresponding control signal and controlling the slave lighting driving circuit to work so as to drive the lamp to work.

Optionally, the host communication lighting circuit further comprises:

the first zero-crossing detection circuit is connected with the alternating current input end and is used for outputting a first zero-crossing signal when a commercial power zero-crossing point is detected;

the master controller is further used for controlling the alternating current input end and the alternating current output end to be disconnected or closed according to the first zero-crossing signal, generating a control signal and controlling the slave lighting driving circuit to work so as to drive the lamp to work.

Optionally, the host communication lighting circuit further comprises:

the mode selection circuit is connected with the input end of the main controller and is used for outputting a corresponding mode selection signal when being triggered by a user;

and the master controller is also used for controlling the slave lighting driving circuit to work according to the mode selection signal so as to drive the lamp to work.

Optionally, the host communication lighting circuit further comprises:

the light-operated detection circuit is connected with the input end of the main controller and is used for detecting the illumination intensity of the surrounding environment and outputting an illumination intensity signal;

and the master controller is also used for controlling the slave lighting driving circuit to work according to the illumination intensity signal so as to drive the lamp to be turned on/off.

Optionally, the host communication lighting circuit further comprises:

the overcurrent detection circuit is connected with the input end of the main controller and is used for detecting the current of the mains supply loop and outputting an overcurrent signal;

the main controller is also used for controlling the alternating current input end and the alternating current output end to be disconnected according to the overcurrent signal.

Optionally, the host communication lighting circuit further comprises:

the indicating circuit is connected with the output end of the master controller, the master controller is further used for outputting a trigger signal when receiving the overcurrent signal, and the indicating circuit is used for working when receiving the trigger signal output by the controller so as to prompt a user that the lighting driving circuit of the slave computer is abnormal.

Optionally, the host communication lighting circuit further comprises:

the output end of the first power supply circuit is respectively connected with the first zero-crossing detection circuit, the master controller and the slave communication control circuit, and the first power supply circuit is used for providing working voltage for the first zero-crossing detection circuit, the master controller and the slave communication control circuit.

The utility model also provides a lighting system which comprises a plurality of slave lighting driving circuits and a plurality of lamps which are connected with the alternating current output end of the master communication lighting circuit, and the master communication lighting circuit, wherein the plurality of slave lighting driving circuits are electrically connected with the plurality of lamps in a one-to-one corresponding mode.

Optionally, the slave lighting driving circuit further comprises:

the second zero-crossing detection circuit is connected with the alternating current output end of the host communication lighting circuit and is used for outputting a second zero-crossing signal when the zero crossing point of the commercial power is detected;

and the light control circuit is connected with the output end of the second zero-crossing detection circuit and is used for controlling the lamp to work according to the second zero-crossing signal.

Optionally, the slave lighting driving circuit further comprises:

and the output end of the second power supply circuit is respectively connected with the second zero-crossing detection circuit and the light control circuit, and the second power supply circuit is used for providing working voltage for the second zero-crossing detection circuit and the light control circuit.

According to the technical scheme, the master communication lighting circuit is connected with a mains supply loop, the slave illumination driving circuit is connected with a current output end of the master communication lighting circuit, the master controller can generate a corresponding control signal to the slave illumination driving circuit by controlling the alternating current input end and the alternating current output end to be disconnected or closed, and the slave illumination driving circuit can control a lamp to work according to different control signals; because the slave lighting driving circuit is directly controlled by the host communication lighting circuit, the problems that the time is increased along with the use time and the time between the slave lighting driving circuits is gradually deviated can be avoided. The utility model realizes the reduction of communication lines, thereby reducing the production cost, realizing the diversification of functions and avoiding the generation of time difference among the slave machines.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a functional block diagram of a host communication lighting circuit according to an embodiment of the present invention;

FIG. 2 is a schematic circuit diagram illustrating an embodiment of a slave communication control circuit of FIG. 1;

FIG. 3 is a schematic circuit diagram of an embodiment of a first zero crossing detection circuit in a host communication lighting circuit according to the present invention;

FIG. 4 is a schematic circuit diagram illustrating an embodiment of a mode selection circuit in a host communication lighting circuit according to the present invention;

FIG. 5 is a schematic circuit diagram of an embodiment of a light control detection circuit in a host communication lighting circuit according to the present invention;

FIG. 6 is a schematic circuit diagram of an embodiment of an over-current detection circuit in a host communication lighting circuit according to the present invention;

FIG. 7 is a schematic circuit diagram of an embodiment of an indicating circuit in the host communication lighting circuit according to the present invention;

FIG. 8 is a schematic circuit diagram of a first power supply circuit of the host communication lighting circuit according to an embodiment of the present invention;

FIG. 9 is a functional block diagram of an embodiment of a main lighting system of the present invention;

fig. 10 is a schematic circuit diagram of an embodiment of the slave lighting driving circuit and the lamp in fig. 9.

The reference numbers indicate:

reference numerals	Name (R)	Reference numerals	Name (R)
				11	Main controller	60	Indicating circuit
12	Slave communication control circuit	70	First power supply circuit
				20	First zero-crossing detection circuit	80	Slave lighting drive circuit
30	Mode selection circuit	81	Second zero-crossing detection circuit
				40	Light-operated detection circuit	82	Light control circuit
50	Overcurrent detection circuit	83	Second power supply circuit
				100	Host communication lighting circuit	90	Lamp fitting
C1～C5	First to fifth capacitors	ACin	AC input terminal
				ACout	AC output terminal	Q1	Bidirectional thyristor
R1～R17	First to seventeenth resistors

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a host communication lighting circuit.

Referring to fig. 1 to 2, in an embodiment of the present invention, the host communication lighting circuit 100 includes:

the alternating current input end ACI is connected with the mains supply loop;

the alternating current output end ACout is connected with the slave lighting driving circuit 80, and the control end of the slave lighting driving circuit 80 is connected with the lamp 90;

a main controller 11, the main controller 11 being configured to output an open/close signal;

the slave communication control circuit 12 is configured to control the ac input terminal ACin and the ac output terminal ACout to be opened or closed according to an open/close signal output by the master controller 11, generate a corresponding control signal, and control the slave lighting driving circuit 80 to operate so as to drive the lamp 90 to operate.

In this embodiment, when the master controller 11 outputs the open/close signal to the slave communication control circuit 12, the slave communication control circuit 12 controls the ac input terminal ACin and the ac output terminal ACout to be open or closed, and different electrical signals, i.e., control signals, are generated by controlling the open or close of the ac input terminal ACin and the ac output terminal ACout and output to the slave lighting driving circuit 80; for example, when the master controller 11 outputs an open signal, the slave communication control circuit 12 controls the ac power input terminal ACin and the ac power output terminal ACout to be open, and outputs a low-level electrical signal to the slave lighting driving circuit 80, and when the master controller 11 outputs a close signal, the slave communication control circuit 12 controls the ac power input terminal ACin and the ac power output terminal ACout to be closed, and outputs a high-level electrical signal to the slave lighting driving circuit 80. In practical applications, the high level signal and the low level signal may be combined into different control signals to be output to the slave lighting driving circuit 80; for example, the slave communication control circuit 12 outputs two high level signals and one low level signal, and the signals are combined to form a start signal and output to the slave lighting driving circuit 80; the slave communication control circuit 12 outputs a high level signal and two low level signals, which are combined to form a turn-off signal and output to the slave lighting driving circuit 80.

It can be understood that the control terminal of the slave lighting driving circuit 80 is connected to the lamp 90, so that when the slave lighting driving circuit 80 receives the control signal output from the slave communication control circuit 12, the lamp 90 is controlled to operate, for example, when the slave lighting driving circuit 80 receives the on control signal output from the slave communication control circuit 12, the lamp 90 can be controlled to be on, and when the slave lighting driving circuit 80 receives the off control signal output from the slave communication control circuit 12, the lamp 90 can be controlled to be off. Because the slave lighting driving circuit 80 is controlled by the master communication lighting circuit 100, and the frequency of the mains supply loop is fixed, the output frequency of the master communication lighting circuit 100 is consistent with the mains supply, so that the input frequency of the slave lighting driving circuit 80 is also consistent with the mains supply frequency, and the problem that the time between the slave lighting driving circuits 80 gradually deviates along with the increase of the use time of a plurality of slave lighting driving circuits 80 under the control of one master communication lighting circuit 100 does not occur.

According to the technical scheme, the master communication lighting circuit 100 is connected with a mains supply loop, the slave lighting driving circuit 80 is connected with a current output end of the master communication lighting circuit 100, the master controller 11 controls the AC input end ACI and the AC output end ACout to be disconnected or closed, corresponding control signals can be generated to the slave lighting driving circuit 80, and the slave lighting driving circuit 80 can control the lamp 90 to work according to different control signals; since the slave lighting driving circuits 80 are directly controlled by the master communication lighting circuit 100, the problem that the time between the slave lighting driving circuits 80 gradually deviates as the use time increases can be avoided. The present invention realizes reduction of communication lines, thereby reducing production costs, diversifying functions, and preventing time difference between the slave lighting driving circuits 80.

Referring to fig. 2, in an embodiment, the slave communication control circuit 12 includes a first resistor R1, a second resistor R2, a third resistor R3, a first voltage dependent resistor VR1, a first capacitor C1, a second capacitor C2, and a triac Q1, the first end of the first voltage dependent resistor VR1, the first end of the first capacitor C1, the output end of the bidirectional controllable silicon Q1 and the alternating current output end ACout are connected, the second end of the first voltage dependent resistor VR1, the second end of the first resistor R1, the second end of the second resistor R2, the input end of the bidirectional thyristor Q1 and the first end of the second capacitor C2 are interconnected with the over-current detection circuit 50, the second end of the first capacitor C1 and the first end of the first resistor R1 are interconnected, the first end of the second resistor R2 is connected with a first alternating current power supply V1, the second end of the second capacitor C2, the first end of the third resistor R3 and the controlled end of the triac Q1 are interconnected.

In this embodiment, the first resistor R1, the second resistor R2, and the third resistor R3 are used to limit the current, the second resistor R2 also functions as a pull-up resistor, the first voltage dependent resistor VR1 is used to prevent the circuit from being damaged by an excessive voltage, the first capacitor C1 and the second capacitor C2 are used to filter, the triac Q1 is used to control the circuit to be opened or closed, when the main controller 11 outputs an open signal, the triac Q1 is opened, so that the ac power input terminal ACin and the ac power output terminal ACout are opened, and when the main controller 11 outputs a close signal, the triac Q1 is closed, so that the ac power input terminal ACin and the ac power output terminal ACout are reconnected. The present embodiment can control the opening/closing of the ac power input terminal ACin and the ac power output terminal ACout by the triac Q1.

Referring to fig. 3, in an embodiment, the host communication lighting circuit 100 further includes:

the first zero-crossing detection circuit 20 is connected with the alternating current input end ACin, and the first zero-crossing detection circuit 20 is used for outputting a first zero-crossing signal when a commercial power zero-crossing point is detected;

the master controller 11 is further configured to control the ac input terminal ACin and the ac output terminal ACout to be opened or closed according to the first zero-crossing signal, generate a control signal, and control the slave lighting driving circuit 80 to operate so as to drive the lamp 90 to operate.

In this embodiment, the first zero-cross detection circuit 20 detects a zero-crossing point of the alternating current, when the alternating current reaches a negative half axis and a zero point, the first zero-cross detection circuit 20 outputs a low level, that is, a first zero-cross signal to the main controller 11, and otherwise, outputs a high level, that is, the first zero-cross signal to the main controller 11, and the main controller 11 can obtain the zero-crossing point, that is, a point at which the level changes from the low level to the high level, by judging a change edge of the level; because the current is the lowest when the current crosses the zero point, the main controller 11 controls the disconnection or the connection of the alternating current input end ACin and the alternating current output end ACout when the current crosses the zero point, so that sparks can be avoided, the safety is improved, the output frequency of the host communication lighting circuit 100 is the same as the mains supply frequency, and the input frequency of the slave lighting driving circuit 80 is the same as the mains supply frequency; the first zero-crossing detection circuit 20 can also detect pulse intervals, and the main controller 11 can obtain the frequency of the mains supply loop according to the pulse intervals, so that the circuit cannot be influenced even if the mains supply frequency is different in different countries. In the embodiment, the first zero-crossing detection circuit 20 detects the zero-crossing point, and the safety can be improved by controlling the ac input terminal ACin and the ac output terminal ACout to be opened/closed at the zero-crossing point.

Referring to fig. 3, in an embodiment, the first zero-crossing detection circuit 20 includes a fourth resistor R4, a fifth resistor R5, and a first diode D1, a first end of the fourth resistor R4 is connected to the ac power input terminal ACin, a second end of the fourth resistor R4 is interconnected with a first end of the fifth resistor R5 and a first end of the first diode D1, a second end of the fifth resistor R5 is connected to the main controller 11, and a second end of the first diode D1 is connected to the first ac power source V1.

In this embodiment, the fourth resistor R4 and the fifth resistor R5 are used to limit the current, the first diode D1 is used to stabilize the voltage, the zero-crossing detection circuit can detect the high level and the low level and send them to the main controller 11, when the current changes from the low level to the high level, the main controller 11 can determine that it is a zero-crossing point, and then outputs an open/close signal at the zero-crossing point, which can increase the safety.

Referring to fig. 4, in an embodiment, the host communication lighting circuit 100 further includes:

a mode selection circuit 30, wherein the mode selection circuit 30 is connected to an input terminal of the main controller 11, and the mode selection circuit 30 is configured to output a corresponding mode selection signal when triggered by a user;

the master controller 11 is further configured to control the slave lighting driving circuit 80 to operate according to the mode selection signal, so as to drive the lamp 90 to operate.

The mode selection circuit 30 includes a dial switch SW1, an input terminal of which is grounded, and an output terminal of which is connected to the main controller 11.

In this embodiment, a user selects different modes through the dial switch SW1, and the main controller 11 generates different control signals when controlling the ac input terminal ACin and the ac output terminal ACout to be opened or closed for different times, for example, the main controller selects to open, close, and close in three consecutive periods of the utility power to represent data 1, and selects to open, close, and represent data 0 in two consecutive periods, and multiple combinations of data 1 and 0, that is, different control signals, may correspond to multiple working modes, and the slave lighting driving circuit 80 controls the lamp 90 to switch to the corresponding working modes after receiving different control signals; the operation mode may be an off mode or may be automatically turned off after a certain time of night operation, and another operation mode may be to turn on the lamp 90 during the day. In this embodiment, the lamp 90 can be controlled to switch to different working modes by triggering the mode selection circuit 30, and the functions are various.

Referring to fig. 5, in an embodiment, the host communication lighting circuit 100 further includes:

the light-operated detection circuit 40, the light-operated detection circuit 40 is connected with the input end of the main controller 11, the light-operated detection circuit 40 is used for detecting the illumination intensity of the surrounding environment and outputting an illumination intensity signal;

the master controller 11 is further configured to control the slave lighting driving circuit 80 to operate according to the illumination intensity signal, so as to drive the lamp 90 to turn on/off.

In this embodiment, the light control detection circuit 40 outputs a light intensity signal to the main controller 11 according to the light intensity of the surrounding environment, when the light intensity of the surrounding environment is high, the light control detection circuit 40 outputs a high light intensity signal to the main controller 11, and when the light intensity of the surrounding environment is low, the light control detection circuit 40 outputs a low light intensity signal to the main controller 11; when receiving the high illumination intensity signal output by the light control detection circuit 40, the master controller 11 outputs a corresponding control signal to the slave lighting driving circuit 80 to control the lamp 90 to be turned off; when receiving the low light intensity signal output by the light control detection circuit 40, the master controller 11 outputs a corresponding control signal to the slave lighting driving circuit 80 to control the lamp 90 to be turned on.

This embodiment detects the ambient light intensity through light-operated detection circuitry 40 and judges daytime and evening, and the light is closed daytime, and the light is turned on evening, avoids causing the waste.

Referring to fig. 5, in an embodiment, the photo detection circuit 40 includes a sixth resistor R6, a third capacitor C3, and a first photodiode D2, a first end of the sixth resistor R6 is connected to a first ac power source V1, a second end of the sixth resistor R6, a first end of the third capacitor C3, and a first end of the first photodiode D2 are connected to the main controller 11, and a second end of the first photodiode and a second end of the third capacitor C3 are grounded.

In this embodiment, the sixth resistor R6 plays a role of a pull-up resistor and is further used for limiting the current, the third capacitor C3 is used for filtering, the first photodiode D2 is used for detecting the illumination intensity of the surrounding environment, different voltage division is generated with the sixth resistor R6 under the condition that the illumination intensity is different, a corresponding electric signal, that is, an illumination intensity signal is output to the main controller 11, and then the main controller 11 controls the slave lighting driving circuit 80 to drive the lamp 90 to be turned on/off according to the illumination intensity signal.

Referring to fig. 6, in an embodiment, the host communication lighting circuit 100 further includes:

the overcurrent detection circuit 50 is connected with the input end of the main controller 11, and the overcurrent detection circuit 50 is used for detecting the current of the mains supply loop and outputting an overcurrent signal;

the main controller 11 is further configured to control the ac power input terminal ACin and the ac power output terminal ACout to be disconnected according to the overcurrent signal.

In this embodiment, when detecting that the current of the slave lighting driving circuit 80 is too high, the overcurrent detection circuit 50 outputs an overcurrent signal to the master controller 11, and the master controller 11 cuts off the power supply to the slave lighting driving circuit 80 after receiving the overcurrent signal; if the mains supply loop connected to the master communication lighting circuit 100 is connected to a plurality of slave lighting driving circuits 80, the overcurrent detection circuit 50 outputs an overcurrent signal to the master controller 11 when detecting that the current of any one or more slave lighting driving circuits 80 is too high, and the master controller 11 cuts off the power supply to all the slave lighting driving circuits 80 after receiving the overcurrent signal. In the present embodiment, the main controller 11 cuts off the power supply to the slave lighting driving circuit 80 when the current is too large by detecting the magnitude of the current, thereby realizing the function of a protection circuit.

Referring to fig. 6, in an embodiment, the over-current detection circuit 50 includes a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a first transistor Q2, a second transistor Q3, a fourth capacitor C4, and a second diode D3, an input terminal of the first transistor Q2 is connected to the slave communication control circuit 12, a controlled terminal of the first transistor Q2, an output terminal of the first transistor Q3, and a controlled terminal of the second transistor Q3 are interconnected to a first terminal of the seventh resistor R7, a second terminal of the seventh resistor R7, a first terminal of the eighth resistor R8, a first terminal of the fourth capacitor C4, and a first terminal of the tenth resistor R10 are grounded, a second terminal of the eighth resistor R8, a first terminal of the ninth resistor R9, and a first terminal of the second resistor R3 are connected to the first terminal of the ninth resistor R867, an output end of the second triode, a second end of the fourth capacitor C4, a second end of the tenth resistor R10, and a first end of the second diode D3 are connected to the main controller 11, a second end of the second diode is interconnected with a first end of the eleventh resistor R11, and a second end of the eleventh resistor R11 is grounded.

In this embodiment, the seventh resistor R7 and the eighth resistor R8 play a role of limiting the magnitude of current, the ninth resistor R9 plays a role of pulling up a resistor, which is used to pull up the level when the second transistor Q3 is turned on, the fourth capacitor C4 is used for filtering, the tenth resistor R10 and the eleventh resistor R11 are used to limit the magnitude of current, the second diode D3 is used to stabilize the magnitude of voltage, the first transistor Q2 and the second transistor Q3 can amplify current, the over-current detection circuit 50 can amplify the smaller current and output the amplified current to the main controller 11, and the main controller 11 determines that the current is too large and then controls the triac Q1 to be disconnected, so that the ac input terminal ACin and the ac output terminal ACout are disconnected, and the slave lighting driving circuit 80 is powered off, and the lamp 90 stops working.

Referring to fig. 7, in an embodiment, the host communication lighting circuit 100 further includes:

and the indicating circuit 60, the indicating circuit 60 is connected with the output end of the main controller 11, the main controller 11 is further configured to output a trigger signal when receiving the overcurrent signal, and the indicating circuit 60 is configured to operate when receiving the trigger signal output by the controller, so as to prompt a user that the slave lighting driving circuit 80 is abnormal.

In this embodiment, the main controller 11 may further output a trigger signal to the indicating circuit 60 when receiving the overcurrent signal output by the overcurrent detecting circuit 50, and the indicating circuit 60 operates when receiving the trigger signal output by the controller, and in practical applications, the indicating circuit 60 may use a light, a flashing or a buzzer to prompt a user that the slave lighting driving circuit 80 fails.

Referring to fig. 7, in an embodiment, the indication circuit 60 includes a twelfth resistor R12, a thirteenth resistor R13, a first indicator light D4, a second indicator light D5, a first end of the twelfth resistor R12 is connected to the main controller 11, a second end of the twelfth resistor R12 is interconnected to the first end of the first indicator light D4, a second end of the first indicator light D4 and a second end of the second indicator light D5 are grounded, a first segment of the thirteenth resistor R13 is connected to the main controller 11, and a second end of the thirteenth resistor is connected to the first end of the second indicator light D5.

In this embodiment, the twelfth resistor R12 and the thirteenth resistor R13 are used to limit the current, when the circuit is normal, the first indicator light D4 is normally on, and when the overcurrent detection circuit 50 detects that the current is too large, the main controller 11 may further output a trigger signal to the indicator circuit 60, so that the first indicator light D4 is turned off, and the second indicator light D5 is turned on, so as to prompt the user that the circuit has a problem.

Referring to fig. 8, in an embodiment, the host communication lighting circuit 100 further includes:

the output end of the first power supply circuit 70 is connected to the first zero-crossing detection circuit 20, the master controller 11 and the slave communication control circuit 12, respectively, and the first power supply circuit 70 is configured to provide working voltages to the first zero-crossing detection circuit 20, the master controller 11 and the slave communication control circuit 12.

In this embodiment, the first power supply circuit 70 is connected to the ac input terminal ACin, and then regulates and filters the ac to output a suitable working voltage to the first zero-crossing detection circuit 20, the master controller 11, and the slave communication control circuit 12; the first power supply circuit 70 may be implemented by a DC-DC voltage reduction circuit, and an output terminal of the first power supply circuit 70 is used for outputting the first ac power source V1.

The utility model also provides an illumination system.

Referring to fig. 9 to 10, in an embodiment, the lighting system includes a plurality of slave lighting driving circuits 80 and a plurality of lamps 90 connected to the ac output terminal ACout of the master communication lighting circuit 100, and the master communication lighting circuit 100 as described above, wherein the plurality of slave lighting driving circuits 80 and the plurality of lamps 90 are electrically connected in a one-to-one correspondence; the specific structure of the host communication lighting circuit 100 refers to the above embodiments, and since the lighting system adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here. The master communication lighting circuit 100 in the lighting system can simultaneously control a plurality of slave lighting driving circuits 80 to work, has a plurality of working modes, is not limited to simple on and off, and can monitor the working states of the slave lighting driving circuits 80, so that when the current of any slave lighting driving circuit 80 is abnormal, all the controlled slave lighting driving circuits 80 are powered off, and the circuit damage is prevented.

Referring to fig. 10, in an embodiment, the slave lighting driving circuit 80 further includes:

the second zero-crossing detection circuit 81, the second zero-crossing detection circuit 81 is connected to the ac output terminal ACout of the host communication lighting circuit 100, and the second zero-crossing detection circuit 81 is configured to output a second zero-crossing signal when a zero-crossing point of the mains supply is detected;

and the light control circuit 82 is connected with the output end of the second zero-crossing detection circuit 81, and the light control circuit 82 is used for controlling the lamp 90 to work according to the second zero-crossing signal.

In this embodiment, after receiving different control signals output by the host communication lighting circuit 100, the second zero-crossing detection circuit 81 outputs a corresponding high level or low level, that is, a second zero-crossing signal to the light control circuit 82, and the light control circuit 82 can control the lamp 90 to switch to different working modes according to different second zero-crossing signals. In the embodiment, the second zero-crossing detection circuit 81 receives a control signal of the host communication lighting circuit 100, so as to control the lamp 90.

Referring to fig. 10, the second zero-crossing detection circuit 81 includes a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, a fifth capacitor C5, a third transistor Q4, a first terminal of the fourteenth resistor R14 is connected to the second power supply circuit 83, a second terminal of the fourteenth resistor R14 is connected to a first terminal of the fifteenth resistor to ground, a second terminal of the fifteenth resistor R15 is interconnected with the first terminal of the low sixteen resistor, the first terminal of the seventeenth resistor R17 and the first terminal of the fifth capacitor C5, a second terminal of the sixteenth resistor R16, a second terminal of the fifth capacitor C5, and an output terminal of the third transistor Q4 are grounded, a second end of the seventeenth resistor R17 is connected to the controlled end of the third transistor Q4, and an input end of the third transistor Q4 is connected to the light control circuit 82.

In this embodiment, the fourteenth resistor R14, the fifteenth resistor R15, and the sixteenth resistor R16 play a role of voltage division, the fifth capacitor C5 plays a role of filtering, and the seventeenth resistor R17 is used for limiting the current; when the divided voltage reaches the third triode Q4, the voltage output by the triode changes between a high level and a low level, the light control circuit 82 can judge whether the voltage crosses zero through the change of the high and low levels, the high and low levels correspond to different control signals, and the light control circuit 82 can control the lamp 90 to work according to the control signals.

Referring to fig. 10, in an embodiment, the slave lighting driving circuit 80 further includes:

the output end of the second power supply circuit 83 is connected to the second zero-crossing detection circuit 81 and the light control circuit 82, respectively, and the second power supply circuit 83 is configured to provide working voltage to the second zero-crossing detection circuit 81 and the light control circuit 82.

In this embodiment, the second power supply circuit 83 rectifies, stabilizes, and filters the alternating current, and then provides a suitable working voltage for the second zero-crossing detection circuit 81 and the light control circuit 82, and the second power supply circuit 83 may be implemented by using a DC-DC voltage reduction circuit.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A host communication lighting circuit, comprising:

the alternating current input end is connected with the mains supply loop;

the alternating current output end is connected with the slave lighting driving circuit, and the control end of the slave lighting driving circuit is connected with the lamp;

a main controller for outputting an open/close signal;

the controlled end of the slave communication control circuit is connected with the master controller, the input end of the slave communication control circuit is connected with the alternating current input end, the output end of the slave communication control circuit is connected with the alternating current output end, and the slave communication control circuit is used for controlling the alternating current input end and the alternating current output end to be opened or closed according to an opening/closing signal output by the master controller, generating a corresponding control signal and controlling the slave lighting driving circuit to work so as to drive the lamp to work.

2. The host communication lighting circuit of claim 1, wherein the host communication lighting circuit further comprises:

the first zero-crossing detection circuit is connected with the alternating current input end and is used for outputting a first zero-crossing signal when a commercial power zero-crossing point is detected;

the master controller is further configured to output an open/close signal to a slave communication control circuit according to the first zero-crossing signal, so that the slave communication control circuit controls the ac input terminal and the ac output terminal to be open or closed, a control signal is generated, and the slave lighting driving circuit is controlled to operate to drive the lamp to operate.

3. The host communication lighting circuit of claim 1, wherein the host communication lighting circuit further comprises:

the mode selection circuit is connected with the input end of the main controller and is used for outputting a corresponding mode selection signal when being triggered by a user;

and the master controller is also used for controlling the slave lighting driving circuit to work according to the mode selection signal so as to drive the lamp to work.

4. The host communication lighting circuit of claim 1, wherein the host communication lighting circuit further comprises:

the light-operated detection circuit is connected with the input end of the main controller and is used for detecting the illumination intensity of the surrounding environment and outputting an illumination intensity signal;

and the master controller is also used for controlling the slave lighting driving circuit to work according to the illumination intensity signal so as to drive the lamp to be turned on/off.

5. The host communication lighting circuit of claim 1, wherein the host communication lighting circuit further comprises:

the overcurrent detection circuit is connected with the input end of the main controller and is used for detecting the current of the mains supply loop and outputting an overcurrent signal;

the main controller is also used for controlling the alternating current input end and the alternating current output end to be disconnected according to the overcurrent signal.

6. The host communication lighting circuit of claim 5, wherein the host communication lighting circuit further comprises:

the indicating circuit is connected with the output end of the master controller, the master controller is further used for outputting a trigger signal when receiving the overcurrent signal, and the indicating circuit is used for working when receiving the trigger signal output by the controller so as to prompt a user that the lighting driving circuit of the slave computer is abnormal.

7. The host communication lighting circuit of claim 2, wherein the host communication lighting circuit further comprises:

the output end of the first power supply circuit is respectively connected with the first zero-crossing detection circuit, the master controller and the slave communication control circuit, and the first power supply circuit is used for providing working voltage for the first zero-crossing detection circuit, the master controller and the slave communication control circuit.

8. A lighting system comprising a plurality of slave lighting driver circuits and a plurality of lamps connected to ac power output terminals of a master communication lighting circuit, and a master communication lighting circuit according to any one of claims 1 to 7, wherein the plurality of slave lighting driver circuits are electrically connected to the plurality of lamps in a one-to-one correspondence.

9. The lighting system, as set forth in claim 8, wherein the slave lighting drive circuit further comprises:

the second zero-crossing detection circuit is connected with the alternating current output end of the host communication lighting circuit and is used for outputting a second zero-crossing signal when the zero crossing point of the commercial power is detected;

and the light control circuit is connected with the output end of the second zero-crossing detection circuit and is used for controlling the lamp to work according to the second zero-crossing signal.

10. The lighting system, as set forth in claim 9, wherein the slave lighting driver circuit further comprises:

and the output end of the second power supply circuit is respectively connected with the second zero-crossing detection circuit and the light control circuit, and the second power supply circuit is used for providing working voltage for the second zero-crossing detection circuit and the light control circuit.

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