CN113099581A

CN113099581A - Multi-angle street lamp control device and control method

Info

Publication number: CN113099581A
Application number: CN202110388222.5A
Authority: CN
Inventors: 刘灵斌; 陈光炎; 陈剑澎; 柯钦怀
Original assignee: Fujian Joy Solar Technology Corp
Current assignee: Fujian Joy Solar Technology Corp
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-07-09
Anticipated expiration: 2041-04-12
Also published as: CN113099581B

Abstract

The invention provides a multi-angle street lamp control device and a control method, which comprise a plurality of paths of LED load circuits, an LED power supply circuit, a signal sampling circuit, an Internet of things communication circuit, an auxiliary power supply circuit and a plurality of paths of infrared control circuits, wherein the LED power supply circuit is connected with the plurality of paths of LED load circuits and used for controlling the plurality of paths of LED load circuits to work; and the Internet of things communication circuit is connected with the multi-path LED load circuit. The invention has the advantages that: the problem that the irradiation range can be limited after the light beam angle of the existing street lamp is reduced can be effectively solved, the lighting effect and the illumination intensity can be guaranteed, meanwhile, the power of the lamp does not need to be increased in order to meet the long-distance lighting requirement, and the energy-saving street lamp has an energy-saving effect.

Description

Multi-angle street lamp control device and control method

Technical Field

The invention relates to the field of street lamp control, in particular to a multi-angle street lamp control device and a control method.

Background

Street lamps refer to lamps providing a road with an illumination function, and generally to lamps in a road illumination range in traffic illumination. At present, street lamps are widely applied to various places needing illumination. The light beam angle of the street lamp is an important factor influencing the street lamp, when the light beam angle is increased, the irradiation range of the street lamp is widened, but the irradiation distance is short, so that the actual use requirement cannot be met; if a longer irradiation distance is to be obtained, the beam angle needs to be reduced, but the irradiation range is limited after the beam angle is reduced. In view of the above problems, the present inventors have conducted extensive studies and have made the present invention.

Disclosure of Invention

The invention aims to provide a multi-angle street lamp control device and a control method, and solves the problem that the irradiation range of the existing street lamp is limited after the light beam angle is reduced.

The invention is realized by the following steps: in a first aspect, the control device comprises a plurality of paths of LED load circuits, an LED power supply circuit, a signal sampling circuit, an Internet of things communication circuit, an auxiliary power supply circuit and a plurality of paths of infrared control circuits, wherein the LED power supply circuit is connected with the plurality of paths of LED load circuits and used for controlling the plurality of paths of LED load circuits to work, the signal sampling circuit is connected with the input end of the LED power supply circuit and used for acquiring electric quantity signals, the Internet of things communication circuit is connected with the signal sampling circuit and used for uploading the acquired electric quantity signals to a cloud end, the auxiliary power supply circuit is connected with the LED power supply circuit and used for providing working voltage in an auxiliary mode, and the plurality of paths of infrared control circuits are connected; and the Internet of things communication circuit is connected with the multi-path LED load circuit.

Further, the LED power supply circuit comprises an alternating current power supply, an EMC filter circuit, a first rectification filter circuit, a first starting circuit, a first pre-stage spike pulse absorption circuit, a first transformer, a first post-stage spike pulse absorption circuit, a first post-stage output filter circuit, a first auxiliary winding circuit, a pre-stage dimming circuit and a post-stage dimming circuit which is isolated from the pre-stage dimming circuit; the alternating current power supply is connected with the EMC filter circuit; the EMC filter circuit is connected with the first rectifying filter circuit; the first starting circuit is connected with the first rectifying and filtering circuit; the primary winding of the first transformer is connected with the first rectifying and filtering circuit; the first pre-stage spike absorption circuit is connected with a primary winding of the first transformer in parallel; the secondary winding of the first transformer is connected with the first post-stage spike pulse absorption circuit; the first post-stage spike pulse absorption circuit is connected with the first post-stage output filter circuit; the first starting circuit and the first transformer are both connected with the first auxiliary winding circuit; the preceding stage dimming circuit is connected with the first auxiliary winding circuit; the rear-stage dimming circuit is connected with the auxiliary power supply circuit.

Further, the EMC filter circuit includes a common mode inductor LF2 and a differential mode capacitor CX1 connected across the output of the common mode inductor LF 2.

Further, the first rectifying and filtering circuit comprises a rectifier DB2, a capacitor C41, a capacitor C42 and an inductor L1; the inductor L1 is connected to one end of the rectifier DB2, one end of the capacitor C41 is connected to an input end of the inductor L1, one end of the capacitor C42 is connected to an output end of the inductor L1, and the other end of the rectifier DB2, the other end of the capacitor C41, and the other end of the capacitor C42 are grounded.

Further, the first starting circuit comprises a resistor R48 connected with the input end of the inductor L1 and a resistor R49 connected with the resistor R48.

Further, the first pre-stage spike absorption circuit comprises a resistor R42, a resistor R43, a capacitor C39 and a diode D7; the resistor R42, the resistor R43 and the capacitor C39 are connected in parallel and then connected in series with the diode D7.

Further, the first post-stage spike absorption circuit comprises a resistor R37, a resistor R41, a capacitor C38 and a diode D4; the resistor R37 and the capacitor C38 are connected in series and then are arranged in parallel with the diode D4; the resistor R41 is arranged in parallel with the resistor R37.

Further, the first post-stage output filter circuit comprises a capacitor EC4, a capacitor EC5, a capacitor EC6, a resistor R47 and a common-mode inductor LF1 which are arranged in parallel; one end of the capacitor EC4, the capacitor EC5, the capacitor EC6, the resistor R47 and the common mode inductor LF1 are connected to the ground in common.

Further, the first auxiliary winding circuit comprises a first auxiliary winding rectifying and filtering circuit, a first auxiliary winding chip, a first protection circuit and a first adjusting circuit; the first auxiliary winding rectifying and filtering circuit is connected with an auxiliary winding of the first transformer; the first auxiliary winding rectifying and filtering circuit is connected with the first auxiliary winding chip through the first protection circuit; and the primary winding of the first transformer is connected with the first auxiliary winding chip through the first adjusting circuit.

Further, the first auxiliary winding rectifying and filtering circuit comprises a diode D5, a diode D6, a capacitor EC7 and a capacitor EC 8; the diode D5 is connected in series with the diode D6; one end of the capacitor EC7 is connected with the output end of the diode D5, and the other end of the capacitor EC7 is grounded; one end of the capacitor EC8 is connected with the output end of the diode D6, and the other end is grounded.

Further, the first protection circuit comprises a resistor R53, a resistor R59, a resistor R61, a capacitor C46 and a capacitor C45; one end of the resistor R53 is connected with an auxiliary winding of a first transformer, and the other end of the resistor R53 is respectively connected with one end of the resistor R59 and the FB pin of the first auxiliary winding chip; one end of the resistor R61 and one end of the capacitor C46 are connected with a VS pin of the first auxiliary winding chip; one end of the capacitor C45 is connected with a COMP pin of the first auxiliary winding chip; the other ends of the resistor R59, the resistor R61, the capacitor C46 and the capacitor C45 are commonly grounded.

Further, the first adjusting circuit comprises a resistor R54, a resistor R57, a MOS transistor D8, a resistor R63, a resistor R64, a resistor R65, a resistor R66, a resistor R62 and a capacitor C47; the D pole of the MOS tube D8 is connected with the primary winding of the first transformer, the G pole of the MOS tube D8 is respectively connected with one ends of the resistor R54 and the resistor R57, and the S pole of the MOS tube D8 is respectively connected with one ends of the resistor R63, the resistor R64, the resistor R65, the resistor R66 and the resistor R62; the other end of the resistor R54 is connected with a GATE pin of the first auxiliary winding chip; the other end of the resistor R62 and one end of the capacitor C47 are both connected with a CS pin of the first auxiliary winding chip; the other ends of the resistor R57, the resistor R63, the resistor R64, the resistor R65, the resistor R66, the resistor R62 and the capacitor C47 are grounded in common.

Further, the pre-stage dimming circuit comprises a resistor R70, a diode D9, a capacitor C49, a resistor R75 and an isolation driver Q6B; one end of the resistor R70 is connected with the first auxiliary winding rectifying and filtering circuit; one end of the diode D9, one end of the capacitor C49, one end of the resistor R75, one end of the isolation driver Q6B and the other end of the resistor R70 are connected to a DIM pin of the first auxiliary winding chip; the diode D9, the capacitor C49, the resistor R75 and the other end of the isolation driver Q6B are commonly grounded.

Further, the rear-stage dimming circuit comprises a resistor R71, an isolation driver Q6A, a triode Q5, a resistor R76 and a resistor R78; one end of the resistor R71 is connected with an auxiliary power supply circuit, and the other end of the resistor R71 is respectively connected with one end of the isolation driver Q6A and the collector of the triode Q5; the base electrode of the triode Q5 is respectively connected with one end of a resistor R76 and one end of a resistor R78; the other end of the isolation driver Q6A, the emitter of the triode Q5 and the other end of the resistor R78 are grounded together; the other end of the resistor R76 is connected with the Internet of things communication circuit.

Furthermore, the auxiliary power supply circuit comprises a second rectifying and filtering circuit, a second starting circuit, a second front-stage spike pulse absorption circuit, a second transformer, a second rear-stage spike pulse absorption circuit, a second rear-stage output filtering circuit, a second auxiliary winding circuit, a first voltage stabilizing circuit and a second voltage stabilizing circuit; the second rectifying and filtering circuit is connected with an alternating current power supply; the second starting circuit is connected with the second rectifying and filtering circuit; the primary winding of the second transformer is connected with the second rectifying and filtering circuit, and the second preceding stage spike pulse absorption circuit is connected with the primary winding of the second transformer in parallel; the secondary winding of the second transformer is connected with the second post-stage spike pulse absorption circuit; the second post-stage spike pulse absorption circuit is connected with the second post-stage output filter circuit; the second starting circuit and the second transformer are both connected with the second auxiliary winding circuit; and the first voltage stabilizing circuit and the second voltage stabilizing circuit are both connected with the second post-stage output filter circuit.

Further, the second rectifying and filtering circuit comprises a rectifier DB1 and a capacitor EC 1; the input end of the rectifier DB1 is connected with an alternating current power supply; one output terminal of the rectifier DB1 is connected to one terminal of the capacitor EC1, and the other output terminal of the rectifier DB1 and the other terminal of the capacitor EC1 are grounded.

Further, the second starting circuit comprises a resistor R3, a resistor R7 and a resistor R9 which are sequentially connected in series.

Further, the second pre-stage spike absorption circuit comprises a resistor R4, a capacitor C6 and a diode D2; the resistor R4 and the capacitor C6 are connected in parallel and then connected in series with the diode D2.

Further, the second post-stage spike absorption circuit comprises a capacitor C4, a resistor R1 and a diode D1; the capacitor C4 and the resistor R1 are connected in series and then connected in parallel with the diode D1.

Further, the second post-stage output filter circuit comprises a capacitor EC2 and a resistor R5 which are arranged in parallel.

Furthermore, the second auxiliary winding circuit comprises a second auxiliary winding rectifying and filtering circuit, a second auxiliary winding chip, a second protection circuit and a second adjusting circuit;

the second auxiliary winding rectifying and filtering circuit and the second protection circuit are connected with an auxiliary winding of a second transformer, and the second auxiliary winding rectifying and filtering circuit, the second protection circuit and the second adjusting circuit are connected with the second auxiliary winding chip; the second auxiliary winding chip is connected with a primary winding of a second transformer.

Further, the second auxiliary winding rectifying and filtering circuit comprises a diode D3, a resistor R9-1 and a capacitor EC 3; the output end of the second starting circuit, one end of the resistor R9-1 and one end of the capacitor EC3 are all connected with a VDD pin of the second auxiliary winding chip; the other end of the resistor R9-1 is connected with an auxiliary winding of a second transformer through a diode D3; the other end of the capacitor EC3 is grounded.

Further, the second protection circuit comprises a resistor R13 and a resistor R14; one ends of the resistor R13 and the resistor R14 are connected with an FB pin of the second auxiliary winding chip; the other end of the resistor R13 is connected with the auxiliary winding of the second transformer, and the other end of the resistor R14 is grounded.

Further, the second adjusting circuit comprises a resistor R15 and a resistor R16; one ends of the resistor R15 and the resistor R16 are connected with the CS pin of the second auxiliary winding chip, and the other ends of the resistor R15 and the resistor R16 are grounded.

Furthermore, the input end of the alternating current power supply is provided with a current sampling resistor RS1, a voltage sampling resistor R67 and a voltage sampling resistor R68.

Furthermore, the multi-path LED load circuit comprises a first load circuit, a second load circuit, a third load circuit and a fourth load circuit which are arranged at the output end of the LED power supply circuit in parallel.

In a second aspect, a control method based on the multi-angle street lamp control device comprises the following steps: the method comprises the following steps that a controlled street lamp is provided with a plurality of irradiation surfaces, and each path of LED load in a multi-path LED load circuit is arranged on one irradiation surface of the controlled street lamp; arranging each infrared sensor in the multi-path infrared control circuit between two adjacent irradiation surfaces;

in a preset allowable light-on time range, sensing a human body infrared signal in real time through an infrared sensor in a multi-path infrared control circuit; when the infrared sensors in the multi-path infrared control circuit sense infrared signals of a human body, the position of the target human body is judged according to the intensity of the infrared signals sensed by the infrared sensors in the multi-path infrared control circuit, and the LED load on the corresponding irradiation surface in the controlled street lamp is controlled to be lightened based on the position of the target human body.

Further, the control method further includes: judging the walking direction of a target human body according to the intensity of infrared signals sensed by each infrared sensor in the multi-path infrared control circuit, and controlling the LED load on the other adjacent irradiation surface to be lightened before the target human body enters the range of the other adjacent irradiation surface from one irradiation surface based on the walking direction of the target human body; meanwhile, after the target human body enters into the other adjacent irradiation surface from one irradiation surface, the LED load on the previous irradiation surface is controlled to be turned off.

One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: the street lamp control device comprises a plurality of paths of infrared control circuits and a plurality of paths of LED load circuits; the design controlled street lamp is provided with a plurality of irradiation surfaces, each irradiation surface is provided with a path of LED load, each illumination surface correspondingly forms an irradiation angle, and a larger irradiation range is formed by combining the plurality of irradiation surfaces; an infrared sensor is arranged between every two adjacent irradiation surfaces. Therefore, when the street lamp works specifically, the position of the target human body can be judged according to the infrared signal intensity sensed by each infrared sensor in the multi-path infrared control circuit, the LED load on the corresponding irradiation surface in the controlled street lamp is controlled to be lightened based on the position of the target human body, and the irradiation distance can be ensured and the actual illumination requirement can be well met due to the fact that the irradiation angle corresponding to each irradiation surface is smaller, namely the light beam angle is smaller. Meanwhile, the walking direction of the target human body can be judged according to the intensity of the infrared signals sensed by each infrared sensor in the multi-path infrared control circuit, and the LED load on the other adjacent irradiation surface is controlled to be lightened before the target human body enters the range of the other adjacent irradiation surface from one irradiation surface based on the walking direction of the target human body, so that the street lamp illumination is always kept in front of the human body along with the walking track of the human body; after the target human body enters the other adjacent irradiation surface from one irradiation surface, the LED load on the previous irradiation surface is controlled to be turned off, so that the purpose of energy conservation is achieved. Therefore, the technical scheme of the invention can effectively solve the problem that the irradiation range of the existing street lamp is limited after the light beam angle is reduced, can ensure the lighting effect and the illumination intensity, does not need to increase the power of the lamp in order to meet the long-distance illumination requirement, and has the energy-saving effect.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

FIG. 1 is a schematic block diagram of a multi-angle street lamp control device according to the present invention;

FIG. 2 is a schematic block circuit diagram of the LED power supply circuit of the present invention;

FIG. 3 is a schematic block circuit diagram of a first auxiliary winding circuit of the present invention;

FIG. 4 is a schematic block circuit diagram of the auxiliary power supply circuit of the present invention;

FIG. 5 is a schematic block circuit diagram of a second auxiliary winding circuit of the present invention;

FIG. 6 is a schematic block circuit diagram of a signal sampling circuit of the present invention;

FIG. 7 is a schematic block circuit diagram of a first load circuit of the present invention;

FIG. 8 is a schematic block circuit diagram of a second load circuit of the present invention;

FIG. 9 is a schematic block circuit diagram of a third load circuit of the present invention;

FIG. 10 is a schematic block circuit diagram of a fourth load circuit of the present invention;

FIG. 11 is a schematic block circuit diagram of a first infrared control circuit of the present invention;

FIG. 12 is a schematic block circuit diagram of a second infrared control circuit of the present invention;

FIG. 13 is a schematic block circuit diagram of a third IR control circuit according to the present invention;

FIG. 14 is a specific circuit configuration diagram of the LED power supply circuit of the present invention;

FIG. 15 is a specific circuit configuration diagram of the auxiliary power supply circuit according to the present invention;

fig. 16 is a specific circuit structure diagram of the front stage dimming circuit and the rear stage dimming circuit according to the present invention;

FIG. 17 is a detailed circuit configuration diagram of the signal sampling circuit of the present invention;

fig. 18 is a specific circuit configuration diagram of the first load circuit of the present invention;

fig. 19 is a specific circuit configuration diagram of a second load circuit of the present invention;

fig. 20 is a specific circuit configuration diagram of a third load circuit of the present invention;

fig. 21 is a specific circuit configuration diagram of a fourth load circuit of the present invention;

FIG. 22 is a schematic circuit diagram of a first infrared control circuit according to the present invention;

FIG. 23 is a detailed circuit configuration diagram of a second IR control circuit according to the invention;

fig. 24 is a specific circuit configuration diagram of a third infrared control circuit of the invention;

FIG. 25 is a schematic diagram of a MUC circuit according to the present invention;

FIG. 26 is a specific circuit configuration diagram of the NBiot communication circuit of the present invention;

fig. 27 is a schematic structural view of the controlled street lamp of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Example one

Referring to fig. 1 to 26, the multi-angle street lamp control device comprises a plurality of paths of LED load circuits 1, an LED power supply circuit 2 connected with the plurality of paths of LED load circuits 1 and used for controlling the plurality of paths of LED load circuits 1 to work, a signal sampling circuit 3 connected with an input end of the LED power supply circuit 2 and used for collecting electric quantity signals, an internet of things communication circuit 4 connected with the signal sampling circuit 3 and used for uploading the collected electric quantity signals to a cloud, an auxiliary power supply circuit 5 connected with the LED power supply circuit 2 and used for providing working voltage in an auxiliary manner, and a plurality of paths of infrared control circuits 6 connected with the internet of things communication circuit 4 and used for uploading detected human body movement signals to the internet of things communication circuit 4; and the Internet of things communication circuit 4 is connected with the multi-path LED load circuit 1. The multi-path LED load circuit 1 comprises a plurality of paths of LED loads for lighting; the LED power supply circuit 2 is used for supplying power to the multi-path LED load circuit 1; the auxiliary power supply circuit 5 is used for providing stable working voltage for the signal sampling circuit 3, the Internet of things communication circuit 4, the multi-path infrared control circuit 6 and the like; the signal sampling circuit 3 is used for collecting and transmitting alternating current parameters (voltage, current, power, frequency and the like) to the internet of things communication circuit 4; the multi-path infrared control circuit 6 is used for detecting human body signals and uploading the human body signals to the Internet of things communication circuit 4 for data processing; the internet of things communication circuit 4 is lighted and is put out according to the LED load of processing result control, the internet of things communication circuit 4 still is used for communicating with the high in the clouds, realizes uploading to the high in the clouds alternating current parameter (voltage, electric current, power, frequency etc.) to supply the managers can look over at any time.

When the control device works specifically, infrared sensors of the multi-path infrared control circuit 6 sense human body infrared signals of surrounding target people in real time, when the infrared sensors sense the human body infrared signals, the multi-path infrared control circuit 6 uploads the human body infrared signals to the Internet of things communication circuit 4 for data processing, the Internet of things communication circuit 4 judges the position of a target human body and the walking direction of the target human body according to the human body infrared signals, and controls LED loads on corresponding irradiation surfaces to track and illuminate the target human body according to the judgment result. By the technical scheme, the street lamp can be kept in front of the human body along with the walking track of the human body all the time, and the problem that the irradiation range is limited after the light beam angle of the existing street lamp is reduced can be effectively solved; when guaranteeing light efficiency and illuminance, need not to increase lamps and lanterns power in order to satisfy long distance lighting demand, have energy-conserving effect.

In the invention, the LED power supply circuit 2 includes an ac power supply 21, an EMC filter circuit 22, a first rectifying filter circuit 23, a first start circuit 24, a first pre-stage spike absorption circuit 25, a first transformer 26, a first post-stage spike absorption circuit 27, a first post-stage output filter circuit 28, a first auxiliary winding circuit 29, a pre-stage dimming circuit 7, and a post-stage dimming circuit 8 isolated from the pre-stage dimming circuit 7; the EMC filter circuit 22 is configured to perform filtering processing on the alternating current; the first rectifying and filtering circuit 23 is used for converting alternating current into direct current and performing filtering processing; the first start-up circuit 24 is for supplying a start-up voltage to the first auxiliary winding circuit 29; the first pre-stage spike absorption circuit 25 is used for absorbing spike interference of a pre-stage of the first transformer 26; the first post-stage spike absorption circuit 27 is used for absorbing spike interference of a post-stage of the first transformer 26; the first post-stage output filter circuit 28 is used for filtering the output voltage; the first auxiliary winding circuit 29 is used for realizing auxiliary power supply; the preceding stage dimming circuit 7 is used for realizing preceding stage dimming of the LED load; the rear stage dimming circuit 8 is used for rear stage dimming of the LED load.

The alternating current power supply 21 is connected with the EMC filter circuit 22; the EMC filter circuit 22 is connected to the first rectifying filter circuit 23; the first starting circuit 24 is connected with the first rectifying and filtering circuit 23; the primary winding TR3B of the first transformer 26 is connected with the first rectifying and filtering circuit 23; the first pre-stage spike absorption circuit 25 is arranged in parallel with the primary winding TR3B of the first transformer 26; the secondary winding TR3A of the first transformer 26 is connected with the first post spike absorption 27 circuit; the first post-stage spike absorption circuit 27 is connected with the first post-stage output filter circuit 28; the first starting circuit 24 and the first transformer 26 are both connected with the first auxiliary winding circuit 29; the preceding stage dimming circuit 7 is connected with the first auxiliary winding circuit 29; the rear-stage dimming circuit 8 is connected with the auxiliary power supply circuit 5. When the LED power supply circuit 2 works, the ac power output by the ac power supply 21 is filtered by the EMC filter circuit 22, the filtered ac power is rectified and filtered by the first rectifying and filtering circuit 23 and then enters the primary winding TR3B of the first transformer 26, and meanwhile, the HV voltage output by the first rectifying and filtering circuit 23 passes through the first starting circuit 24 to provide a starting voltage for the chip of the first auxiliary winding circuit 29; the first auxiliary winding circuit 29 starts outputting the PWM signal, and the primary winding TR3B of the first transformer 26 starts storing energy; when the first auxiliary winding circuit 29 triggers the overcurrent threshold, the PWM signal is turned off, and since the dotted terminal of the secondary winding TR3A of the first transformer 26 is opposite to the dotted terminal of the primary winding TR3B, the primary winding TR3B turns off the stored energy, and the secondary winding TR3A outputs a lower voltage to supply power to the multi-path LED load circuit 1 through the number of turns of the first transformer 26; after the voltage of the secondary winding TR3A is established, since the same-name ends of the auxiliary winding TR3C and the secondary winding TR3A in the first auxiliary winding circuit 29 are the same, the auxiliary winding TR3C in the first auxiliary winding circuit 29 generates an operating voltage of about 18V after the number of turns is changed to maintain the power supply to the chip in the first auxiliary winding circuit 29, thereby reducing the power consumption.

In the present invention, the EMC filter circuit 22 includes a common mode inductor LF2 and a differential mode capacitor CX1 connected between the two ends of the output of the common mode inductor LF 2. The common mode inductance LF2 is used for filtering the common mode interference signal of alternating current, and differential mode capacitance CX1 is used for filtering the differential mode interference signal of alternating current.

In the present invention, the first rectifying and filtering circuit 23 includes a rectifier DB2, a capacitor C41, a capacitor C42, and an inductor L1; the inductor L1 is connected to one end of the rectifier DB2, one end of the capacitor C41 is connected to an input end of the inductor L1, one end of the capacitor C42 is connected to an output end of the inductor L1, and the other end of the rectifier DB2, the other end of the capacitor C41, and the other end of the capacitor C42 are grounded. The rectifier DB2 is used for converting the alternating current output by the EMC filter circuit 22 into direct current; the capacitor C41, the capacitor C42 and the inductor L1 form a pi-shaped filter circuit, the capacitor C41 and the capacitor C42 are used for converting pulsating direct current into smooth direct current, and the inductor L1 is used for filtering differential mode interference signals.

In the present invention, the first start-up circuit 24 includes a resistor R48 connected to the input terminal of the inductor L1 and a resistor R49 connected to the resistor R48. In operation, the first auxiliary winding circuit 29 is supplied with an initial starting voltage through resistor R48 and resistor R49.

In the invention, the first pre-stage spike absorption circuit 25 comprises a resistor R42, a resistor R43, a capacitor C39 and a diode D7; the resistor R42, the resistor R43 and the capacitor C39 are connected in parallel and then connected in series with the diode D7. In operation, the first pre-stage spike absorption circuit 25 is used to absorb spike interference output by the first rectifying and filtering circuit 23.

In the present invention, the first post-stage spike absorbing circuit 27 includes a resistor R37, a resistor R41, a capacitor C38, and a diode D4; the resistor R37 and the capacitor C38 are connected in series and then are arranged in parallel with the diode D4; the resistor R41 is arranged in parallel with the resistor R37. In operation, the first post-stage spike absorption circuit 27 is configured to absorb spike disturbances of the voltage transformed by the first transformer 26.

In the invention, the first post-stage output filter circuit 28 comprises a capacitor EC4, a capacitor EC5, a capacitor EC6, a resistor R47 and a common-mode inductor LF1 which are arranged in parallel; one end of the capacitor EC4, the capacitor EC5, the capacitor EC6, the resistor R47 and the common mode inductor LF1 are connected to the ground in common. In operation, the capacitor EC4, the capacitor EC5 and the capacitor EC6 play a role in filtering the output voltage; the resistor R47 is a dummy load and is used for balancing voltage; the common mode inductor LF1 functions to filter common mode interference signals.

In the present invention, the first auxiliary winding circuit 29 includes a first auxiliary winding rectifying and filtering circuit 291, a first auxiliary winding chip U11, a first protection circuit 292, and a first adjusting circuit 293; the first auxiliary winding rectifying and filtering circuit 291 is connected with an auxiliary winding TR3C of the first transformer 26; the first auxiliary winding rectifying and filtering circuit 291 is connected with the first auxiliary winding chip U11 through the first protection circuit 292; the primary winding TR3B of the first transformer 26 is connected to the first auxiliary winding chip U11 through the first adjusting circuit 293. The first auxiliary winding rectifying and filtering circuit 291 is used for rectifying and filtering the voltage output by the auxiliary winding TR 3C; after the first starting circuit 24 provides a starting voltage to the first auxiliary winding chip U11, the first auxiliary winding chip U11 starts outputting a PWM signal, so that the primary winding TR3B starts storing energy; the first protection circuit 292 is used for protecting the first auxiliary winding chip U11; the first adjusting circuit 293 plays a role in eliminating interference, adjusting output current, and the like.

In the invention, the first auxiliary winding rectifying and filtering circuit 291 comprises a diode D5, a diode D6, a capacitor EC7 and a capacitor EC 8; the diode D5 is connected in series with the diode D6; one end of the capacitor EC7 is connected with the output end of the diode D5, and the other end of the capacitor EC7 is grounded; one end of the capacitor EC8 is connected with the output end of the diode D6, and the other end is grounded. In operation, the auxiliary winding TR3C of the first transformer 26 outputs an operating voltage after the number of turns is converted, and the operating voltage outputs an operating voltage of 18V after being rectified by the diode D5, so as to be provided to the preceding stage dimming circuit 7 for use; after the 18V working voltage is subjected to secondary rectification and filtering through the capacitor EC7, the diode D6 and the capacitor EC8, the starting voltage is output to maintain power supply for the first auxiliary winding chip U11.

In the present invention, the first protection circuit 292 includes a resistor R53, a resistor R59, a resistor R61, a capacitor C46 and a capacitor C45; one end of the resistor R53 is connected with the auxiliary winding TR3C of the first transformer 26, and the other end of the resistor R53 is respectively connected with one end of the resistor R59 and the FB pin of the first auxiliary winding chip U11; one end of the resistor R61 and one end of the capacitor C46 are connected with a VS pin of the first auxiliary winding chip U11; one end of the capacitor C45 is connected with a COMP pin of the first auxiliary winding chip U11; the other ends of the resistor R59, the resistor R61, the capacitor C46 and the capacitor C45 are commonly grounded. Wherein, the resistor R53 and the resistor R59 are ovp sampling resistors; the resistor R61 and the capacitor C46 are used for realizing internal reference voltage sampling; the capacitor C45 is used to implement loop compensation.

In the present invention, the first adjusting circuit 293 includes a resistor R54, a resistor R57, a MOS transistor D8, a resistor R63, a resistor R64, a resistor R65, a resistor R66, a resistor R62, and a capacitor C47; a D pole of the MOS transistor D8 is connected to the primary winding TR3B of the first transformer 26, a G pole of the MOS transistor D8 is connected to one end of the resistor R54 and one end of the resistor R57, respectively, and an S pole of the MOS transistor D8 is connected to one end of the resistor R63, the resistor R64, the resistor R65, the resistor R66, and the resistor R62, respectively; the other end of the resistor R54 is connected with a GATE pin of the first auxiliary winding chip U11; the other end of the resistor R62 and one end of the capacitor C47 are both connected with a CS pin of the first auxiliary winding chip U11; the other ends of the resistor R57, the resistor R63, the resistor R64, the resistor R65, the resistor R66, the resistor R62 and the capacitor C47 are grounded in common. The MOS tube D8 is a front-stage power MOS tube and plays a role in switching and power conversion; the resistor R54 and the resistor R57 are driving resistors of the MOS tube D8, and the resistor R54 influences the slope of the switch and mainly plays a role in adjusting electromagnetic interference; the resistor R57 is a charge-capacitance bleeder resistor of the MOS tube D8, and plays a role in protecting the MOS tube D8; the resistor R62 and the capacitor C47 form an integrating circuit for eliminating current pulse interference caused by a switching process; the resistor R63, the resistor R64, the resistor R65 and the resistor R66 are pre-current sampling resistors and are used for adjusting the output current.

In the invention, the pre-stage dimming circuit 7 comprises a resistor R70, a diode D9, a capacitor C49, a resistor R75 and an isolation driver Q6B; one end of the resistor R70 is connected to the first auxiliary winding rectifying and filtering circuit 291; one end of the diode D9, one end of the capacitor C49, one end of the resistor R75, one end of the isolation driver Q6B and the other end of the resistor R70 are connected to the DIM pin of the first auxiliary winding chip U11; the diode D9, the capacitor C49, the resistor R75 and the other end of the isolation driver Q6B are commonly grounded. In operation, the preceding stage dimming circuit 7 provides an operating voltage of 18V through the first auxiliary winding rectifying and filtering circuit 291 to implement preceding stage dimming on the LED load.

In the present invention, the rear-stage dimming circuit 8 includes a resistor R71, an isolation driver Q6A, a transistor Q5, a resistor R76, and a resistor R78; one end of the resistor R71 is connected with the auxiliary power supply circuit 5, and the other end of the resistor R71 is respectively connected with one end of the isolation driver Q6A and the collector of the triode Q5; the base electrode of the triode Q5 is respectively connected with one end of a resistor R76 and one end of a resistor R78; the other end of the isolation driver Q6A, the emitter of the triode Q5 and the other end of the resistor R78 are grounded together; the other end of the resistor R76 is connected with the Internet of things communication circuit 4. When the LED dimming circuit works, the rear dimming circuit 8 is connected with the auxiliary power supply circuit 5, and 12V working voltage is provided for the rear dimming circuit 8 through the auxiliary power supply circuit 5 to be used for carrying out rear dimming on an LED load.

In the present invention, the auxiliary power supply circuit 5 includes a second rectifying and filtering circuit 51, a second starting circuit 52, a second front-stage spike absorbing circuit 53, a second transformer 54, a second rear-stage spike absorbing circuit 55, a second rear-stage output filtering circuit 56, a second auxiliary winding circuit 57, a first voltage stabilizing circuit 58 and a second voltage stabilizing circuit 59; the second rectifying and filtering circuit 51 is configured to convert an alternating current into a direct current and perform filtering processing; the second start-up circuit 52 is for supplying a start-up voltage to the second auxiliary winding circuit 57; the second pre-stage spike absorption circuit 53 is used for absorbing spike interference of a pre-stage; the second post-stage spike absorption circuit 55 is used for absorbing spike interference of a post-stage; the second post-stage output filter circuit 56 is configured to perform filtering processing on the output voltage; the second auxiliary winding circuit 57 is used to realize auxiliary power supply; the first and second stabilizing

circuits

58 and 59 are used for outputting a stabilized voltage to assist in powering the required circuits.

The second rectifying and filtering circuit 51 is connected with the alternating current power supply 21; the second starting circuit 52 is connected with the second rectifying and filtering circuit 51; the primary winding TR1B of the second transformer 54 is connected to the second rectifying and filtering circuit 51, and the second pre-stage spike absorbing circuit 53 is connected in parallel to the primary winding TR1B of the second transformer 54; the secondary winding TR1A of the second transformer 54 is connected to the second post-stage spike absorption circuit 55; the second post-stage spike absorption circuit 55 is connected to the second post-stage output filter circuit 56; the second starting circuit 52 and the second transformer 54 are both connected with the second auxiliary winding circuit 57; the first voltage stabilizing circuit 58 and the second voltage stabilizing circuit 59 are both connected with the second post-stage output filter circuit 56. When the auxiliary power supply circuit 5 works specifically, alternating current is rectified and filtered by the second rectifying and filtering circuit 51 and then direct current is output; one path of the direct current enters a primary winding TR1B of the second transformer 54, the other path of the direct current provides a starting voltage for the second auxiliary winding circuit 57 through the second starting circuit 52, the second auxiliary winding circuit 57 starts outputting a PWM signal, and the primary winding TR1B of the second transformer 54 starts storing energy; when the second auxiliary winding circuit 57 triggers the overcurrent threshold, the PWM signal is turned off, since the dotted terminal of the secondary winding TR1A of the second transformer 54 is opposite to the dotted terminal of the primary winding TR1B, the primary winding TR1B turns off the stored energy, the secondary winding TR1A outputs a dc voltage after the number of turns of the second transformer 54 is changed, and the dc voltage outputs a voltage of 12V for auxiliary power supply after spike pulse processing and filtering processing are performed by the second post-stage spike pulse absorption circuit 55 and the second post-stage output filter circuit 56; after the voltage of the secondary winding TR1A is established, since the auxiliary winding TR1C of the second auxiliary winding circuit 57 is the same as the same-name end of the secondary winding TR1A, the auxiliary winding TR1C generates a working voltage after the number of turns is changed to maintain the power supply to the chip in the second auxiliary winding circuit 57, thereby reducing the damage.

In the present invention, the second rectifying and filtering circuit 51 includes a rectifier DB1 and a capacitor EC 1; the input end of the rectifier DB1 is connected with an alternating current power supply 21; one output terminal of the rectifier DB1 is connected to one terminal of the capacitor EC1, and the other output terminal of the rectifier DB1 and the other terminal of the capacitor EC1 are grounded. Rectifier DB1 is used for converting alternating current to direct current, and electric capacity EC1 plays the filtering role to direct current.

In the present invention, the second start circuit 52 includes a resistor R3, a resistor R7, and a resistor R9 connected in series. In operation, the second auxiliary winding circuit 57 is supplied with an initial starting voltage through the resistor R3, the resistor R7, and the resistor R9.

In the present invention, the second pre-stage spike absorbing circuit 53 includes a resistor R4, a capacitor C6, and a diode D2; the resistor R4 and the capacitor C6 are connected in parallel and then connected in series with the diode D2. The second pre-stage spike absorption circuit 53 is used to absorb the spike interference of the pre-stage during operation.

In the present invention, the second post-stage spike absorbing circuit 55 includes a capacitor C4, a resistor R1, and a diode D1; the capacitor C4 and the resistor R1 are connected in series and then connected in parallel with the diode D1. The second post spike absorption circuit 55 is used to absorb spike interference of the voltage output from the secondary winding TR1A of the second transformer 54.

In the present invention, the second post-stage output filter circuit 56 includes a capacitor EC2 and a resistor R5 arranged in parallel. The capacitor EC2 plays a role in filtering; the resistor R5 is a dummy load and acts to stabilize the voltage.

In the invention, the first voltage stabilizing circuit 58 is composed of a capacitor C9, a capacitor C11, a capacitor C12 and a low dropout regulator U2, and the capacitor C9, the capacitor C11 and the capacitor C12 are used for converting pulsating direct current into smooth direct current. When the voltage regulator works, the 12V voltage output by the second post-stage output filter circuit 56 is reduced to 5V through the low-dropout regulator tube U2, and 5V working voltage is provided for a required circuit.

In the invention, the second voltage stabilizing circuit 59 comprises a capacitor C10 and a low dropout regulator U3; the capacitor C10 is used to convert the pulsating dc power to smooth dc power. When the voltage regulator works, the 12V voltage output by the second post-stage output filter circuit 56 is reduced to 3.3V through the low-dropout regulator tube U3, and 3.3V working voltage is provided for a required circuit.

In the present invention, the second auxiliary winding circuit 57 includes a second auxiliary winding rectifying and filtering circuit 571, a second auxiliary winding chip U4, a second protection circuit 572, and a second adjusting circuit 573; the second auxiliary winding rectifying and filtering circuit 571 and the second protection circuit 572 are connected to an auxiliary winding TR1C of the second transformer 54, and the second auxiliary winding rectifying and filtering circuit 571, the second protection circuit 572 and the second regulation circuit 573 are connected to the second auxiliary winding chip U4; the second auxiliary winding chip U4 is connected to the primary winding TR1B of the second transformer 54. The second auxiliary winding rectifying and filtering circuit 571 is configured to perform a rectifying and filtering function on the output voltage of the auxiliary winding TR 1C; the second protection circuit 572 is used for protecting the second auxiliary winding chip U4; the second adjustment circuit 573 is used for adjusting the current magnitude.

In the invention, the second auxiliary winding rectifying and filtering circuit 571 comprises a diode D3, a resistor R9-1 and a capacitor EC 3; the output end of the second starting circuit 52, one end of the resistor R9-1 and one end of the capacitor EC3 are all connected with a VDD pin of a second auxiliary winding chip U4; the other end of the resistor R9-1 is connected with an auxiliary winding TR1C of the second transformer 54 through a diode D3; the other end of the capacitor EC3 is grounded. During operation, the auxiliary winding TR1C of the second transformer 54 outputs a working voltage after the number of turns is converted, and the working voltage outputs a starting voltage after being rectified and filtered by the diode D3, the resistor R9-1 and the capacitor EC3 so as to maintain power supply to the second auxiliary winding chip U4.

In the present invention, the second protection circuit 572 includes a resistor R13 and a resistor R14; one ends of the resistor R13 and the resistor R14 are connected with an FB pin of the second auxiliary winding chip U4; the other end of the resistor R13 is connected to the auxiliary winding TR1C of the second transformer 54, and the other end of the resistor R14 is grounded. The resistor R13 and the resistor R14 are resistors and are used for protecting the second auxiliary winding chip U4.

In the present invention, the second adjustment circuit 573 includes a resistor R15 and a resistor R16; one ends of the resistor R15 and the resistor R16 are connected with the CS pin of the second auxiliary winding chip U4, and the other ends are grounded. The resistor R15 and the resistor R16 are resistors and are used for adjusting the output current.

In the invention, the input end of the alternating current power supply 21 is provided with a current sampling resistor RS1, a voltage sampling resistor R67 and a voltage sampling resistor R68. The resistor RS1 is used for sampling the current signal of the alternating current power supply 21; the resistor R67 and the resistor R68 are used to sample the voltage signal of the ac power supply 21.

In the present invention, the signal sampling circuit 3 includes a sampling chip U6, an input voltage sampling circuit 31, and an input current sampling circuit 32; the voltage sampling resistor R67 and the voltage sampling resistor R68 are connected with the input voltage sampling circuit 31; the current sampling resistor RS1 is connected with the input current sampling circuit 32; the input voltage sampling circuit 31 and the input current sampling circuit 32 are both connected with a sampling chip U6. The input voltage sampling circuit 31 is composed of a resistor R26, a resistor R28, a capacitor C25, a resistor R29, a capacitor C26 and a resistor R30, and the input voltage sampling circuit 31 is used for sampling a voltage signal of the alternating current power supply 21; the input current sampling circuit 32 is composed of a resistor R32, a resistor R33, a capacitor C27, a capacitor C30, and a capacitor C29, and the input current sampling circuit 32 is configured to sample a current signal of the ac power supply 21.

In the present invention, for better lighting, the multi-path LED load circuit 1 includes a first load circuit 11, a second load circuit 12, a third load circuit 13 and a fourth load circuit 14, which are arranged in parallel at the output end of the LED power supply circuit 2.

In the present invention, the first load circuit 11 includes a first LED driving circuit 111, a first load gate circuit 112 connected to the first LED driving circuit 111, and a first LED load 113 connected to the first load gate circuit 112;

the first LED driving circuit 111 includes a MOS transistor Q9, a resistor R82, and a resistor R84; one end of the resistor R82 and one end of the resistor R84 are connected with the G pole of the MOS transistor Q9; the other end of the resistor R84 and the S pole of the MOS transistor Q9 are grounded;

the first load gating circuit 112 comprises a MOS transistor Q7 and a resistor R35; the G pole of the MOS transistor Q7 and one end of the resistor R35 are connected with the D pole of the MOS transistor Q9; the S pole of the MOS transistor Q7 is connected with the other end of the resistor R35; the D pole of the MOS transistor Q7 is connected to the first LED load 113. The resistor R82 is a damping resistor and is used for eliminating loop oscillation; the resistor R84 is used to pull down the voltage to prevent the first LED load 113 from being driven by mistake; the resistor R35 is a bias resistor and is used for ensuring the turn-off effect of the MOS transistor Q7. During operation, the first LED driving circuit 111 receives the driving signal of the internet of things communication circuit 4 and then drives the first load gating circuit 112 to gate the first LED load 113, so that the first LED load 113 is turned on for illumination.

In the present invention, the second load circuit 12 includes a second LED driving circuit 121, a second load gating circuit 122 connected to the second LED driving circuit 121, and a second LED load 123 connected to the second load gating circuit 122;

the second LED driving circuit 121 includes a MOS transistor Q13, a resistor R88, and a resistor R90; one end of the resistor R88 and one end of the resistor R90 are connected with the G pole of the MOS transistor Q13; the other end of the resistor R90 and the S pole of the MOS transistor Q13 are grounded;

in the present invention, the second load gating circuit 122 includes a MOS transistor Q11 and a resistor R86; the G pole of the MOS transistor Q11 and one end of the resistor R86 are connected with the D pole of the MOS transistor Q13; the S pole of the MOS transistor Q11 is connected with the other end of the resistor R86; the D pole of the MOS transistor Q11 is connected to the second LED load 123. The resistor R88 is a damping resistor and is used for eliminating loop oscillation; the resistor R90 is used to pull down the voltage to prevent the second LED load 123 from being driven by mistake; the resistor R86 is a bias resistor and is used for ensuring the turn-off effect of the MOS transistor Q11. During operation, the second LED driving circuit 121, after receiving the driving signal of the internet of things communication circuit 4, drives the second load gating circuit 122 to gate the second LED load 123, so that the second LED load 123 turns on lighting.

In the present invention, the third load circuit 13 includes a third LED driving circuit 131, a third load gating circuit 132 connected to the third LED driving circuit 131, and a third LED load 133 connected to the third load gating circuit 132;

the third LED driving circuit 131 includes a MOS transistor Q10, a resistor R83, and a resistor R85; one end of the resistor R83 and one end of the resistor R85 are connected with the G pole of the MOS transistor Q10; the other end of the resistor R85 and the S pole of the MOS transistor Q10 are grounded;

the third load gating circuit 132 comprises a MOS transistor Q8 and a resistor R81; the G pole of the MOS transistor Q8 and one end of the resistor R81 are connected with the D pole of the MOS transistor Q10; the S pole of the MOS transistor Q8 is connected with the other end of the resistor R81; the D pole of the MOS transistor Q8 is connected to the third LED load 133. The resistor R83 is a damping resistor and is used for eliminating loop oscillation; the resistor R85 is used to pull down the voltage to prevent the third LED load 133 from being driven by mistake; the resistor R81 is a bias resistor and is used for ensuring the turn-off effect of the MOS transistor Q8. In operation, the third LED driving circuit 131, after receiving the driving signal of the internet of things communication circuit 4, drives the third load gating circuit 132 to gate the third LED load 133, so that the third LED load 133 turns on the lighting.

In the present invention, the fourth load circuit 14 includes a fourth LED driving circuit 141, a fourth load gating circuit 142 connected to the fourth LED driving circuit 141, and a fourth LED load 143 connected to the fourth load gating circuit 142;

the fourth LED driving circuit 141 includes a MOS transistor Q14, a resistor R89, and a resistor R91; one end of the resistor R89 and one end of the resistor R91 are connected with the G pole of the MOS transistor Q14; the other end of the resistor R91 and the S pole of the MOS transistor Q14 are grounded;

in the present invention, the fourth load gating circuit 142 includes a MOS transistor Q12 and a resistor R87; the G pole of the MOS transistor Q87 and one end of the resistor R87 are connected with the D pole of the MOS transistor Q14; the S pole of the MOS transistor Q12 is connected with the other end of the resistor R87; the D pole of the MOS transistor Q12 is connected to the fourth LED load 143. The resistor R89 is a damping resistor and is used for eliminating loop oscillation; the resistor R91 is used to pull down the voltage to prevent the fourth LED load 143 from being driven by mistake; the resistor R87 is a bias resistor and is used for ensuring the turn-off effect of the MOS transistor Q12. In operation, the fourth LED driving circuit 141, after receiving the driving signal of the internet of things communication circuit 4, drives the fourth load gating circuit 142 to gate the fourth LED load 143, so that the fourth LED load 143 turns on lighting.

In the invention, the multi-path infrared control circuit 6 comprises a first infrared control circuit 61 connected with the other ends of a resistor R82 and a resistor R88; the first infrared control circuit 61 comprises a first infrared control chip U10, a first output delay adjusting circuit 611, a first sensitivity adjusting circuit 612, a first optically controlled adjusting resistor R36, a first signal filtering circuit 613 and a first infrared sensor PIR 1; the first output delay adjusting circuit 611, the first sensitivity adjusting circuit 612, the first optically controlled adjusting resistor R36, the first signal filtering circuit 613 and the first infrared sensor PIR1 are all connected to the first infrared control chip U10. The first output delay adjusting circuit 611 is composed of a resistor R38, a resistor R44 and a regulating resistor TIME1, and the first output delay adjusting circuit 611 plays a role in regulating delay TIME; the first sensitivity adjustment circuit 612 is composed of a resistor R46, a resistor R39, and an adjustment resistor SEN1, and the first sensitivity adjustment circuit 612 is configured to adjust the sensitivity of the first infrared sensor PIR 1; the first signal filtering circuit 613 is composed of a resistor R45 and a capacitor C40, and the first signal filtering circuit 613 is used for filtering infrared signals; the first optically controlled adjusting resistor R36 is used for adjusting the working mode; the first infrared sensor PIR1 is used for sensing an infrared human body signal of a target human body.

In the invention, the multi-path infrared control circuit 6 comprises a second infrared control circuit 62 connected with the other end of the resistor R88 and the resistor R83; the second infrared control circuit 62 comprises a second infrared control chip U12, a second output delay adjusting circuit 621, a second sensitivity adjusting circuit 622, a second optically controlled adjusting resistor R50, a second signal filter circuit 623 and a second infrared sensor PIR 2; the second output delay adjusting circuit 621, the second sensitivity adjusting circuit 622, the second optically controlled adjusting resistor R50, the second signal filtering circuit 623 and the second infrared sensor are all connected with the second infrared control chip U12 through the PIR 2. The second output delay adjusting circuit 621 is composed of a resistor R51, a resistor R56, and a regulating resistor TIME2, and the second output delay adjusting circuit 621 plays a role in regulating delay TIME; the second sensitivity adjustment circuit 622 is composed of a resistor R60, a resistor R52, and an adjustment resistor SEN2, and the second sensitivity adjustment circuit 622 is used to adjust the sensitivity of the second infrared sensor PIR 2; the second signal filter circuit 623 is composed of a resistor R58 and a capacitor C44, and the second signal filter circuit 623 is used for filtering infrared signals; the second optically-controlled adjusting resistor R50 is used for adjusting the working mode; the second infrared sensor PIR2 is used for sensing an infrared human body signal of a target human body.

In the invention, the multi-path infrared control circuit 6 comprises a third infrared control circuit 63 connected with the other end of the resistor R83 and the resistor R89; the third infrared control circuit 63 includes a third infrared control chip U13, a third output delay adjusting circuit 631, a third sensitivity adjusting circuit 632, a third light-operated adjusting resistor R69, a third signal filter circuit 633 and a third infrared sensor PIR 3; the third output delay adjusting circuit 631, the third sensitivity adjusting circuit 632, the third light-operated adjusting resistor R69, the third signal filtering circuit 633 and the third infrared sensor are all connected with the third infrared control chip U13 through the PIR 3. The third output delay adjusting circuit 631 is composed of a resistor R72, a resistor R77 and a regulating resistor TIME3, and the third output delay adjusting circuit 631 plays a role in regulating delay TIME; the third sensitivity adjustment circuit 632 is configured by a resistor R80, a resistor R73, and an adjustment resistor SEN3, and the third sensitivity adjustment circuit 632 is configured to adjust the sensitivity of the third infrared sensor PIR 3; the third signal filter circuit 633 is composed of a resistor R79 and a capacitor C50, and the third signal filter circuit 633 is used for filtering infrared signals; the third light-operated adjusting resistor R69 is used for adjusting the working mode; the third infrared sensor PIR3 is used for sensing an infrared human body signal of a target human body.

In the present invention, the internet of things communication circuit 4 includes a MUC circuit 41 and an NBiot communication circuit 42 connected to the MUC circuit 41. The MUC circuit 41 is used for realizing functions such as data processing, and the NBiot communication circuit 42 is used for realizing a remote communication function. During operation, the signal sampling circuit 3 transmits various collected electric quantity parameter signals (voltage, current, power, frequency and the like) to the MUC circuit 41 through the SPI serial port, and the MUC circuit 41 uploads processed data to the cloud through the NBiot communication circuit 42; the multi-path infrared control circuit 6 uploads the detected human body infrared signals to the MUC circuit 41 for data processing, the MUC circuit 41 judges the position and the walking direction of the target human body according to the intensity of the infrared signals sensed by the multi-path infrared control circuit 6, and controls the LED load on the corresponding irradiation surface to be turned on or turned off based on the position and the walking direction of the target human body.

Example two

Referring to fig. 1 to 27, in the multi-angle street lamp control method of the present invention, a control device is required, and a specific structure of the control device is described with reference to the first embodiment, which is not described herein again, and the control method includes: the controlled street lamp is provided with a plurality of irradiation surfaces, and each path of LED load in the multi-path LED load circuit 1 is arranged on one irradiation surface of the controlled street lamp; each path of infrared sensor in the multi-path infrared control circuit 6 is arranged between two adjacent irradiation surfaces so as to detect a passing target human body through the infrared sensor;

in a preset allowable light-on time range, sensing a human body infrared signal in real time through an infrared sensor in the multi-path infrared control circuit 6; when the infrared sensors in the multi-path infrared control circuit 6 sense infrared signals of a human body, the position of the target human body is judged according to the intensity of the infrared signals sensed by the infrared sensors in the multi-path infrared control circuit 6, and the LED load on the corresponding irradiation surface in the controlled street lamp is controlled to be lightened based on the position of the target human body, so that illumination is realized. Because the controlled street lamp is arranged into a plurality of irradiation surfaces, the irradiation angle corresponding to each irradiation surface is smaller (the beam angle is smaller), the irradiation distance can be ensured, and the actual illumination requirement can be well met.

In the present invention, the control method further includes: the walking direction of the target human body is judged according to the intensity of the infrared signals sensed by each infrared sensor in the multi-path infrared control circuit 6, and the LED load on the other adjacent irradiation surface is controlled to be lightened before the target human body enters the range of the other adjacent irradiation surface from one irradiation surface based on the walking direction of the target human body, so that the street lamp illumination is always kept in front of the human body along with the walking track of the human body; meanwhile, after the target human body enters the other adjacent irradiation surface from one irradiation surface, the LED load on the previous irradiation surface is controlled to be turned off, so that the purpose of energy conservation is achieved. Therefore, the technical scheme of the invention can effectively solve the problem that the irradiation range of the existing street lamp is limited after the light beam angle is reduced, can ensure the lighting effect and the illumination intensity, does not need to increase the power of the lamp in order to meet the long-distance illumination requirement, and has the energy-saving effect.

The control method of the present invention is explained in detail below by a specific example: assuming that the maximum illumination angle of a single controlled street lamp is 180 °, the controlled street lamp has 4 illumination planes (including a first illumination plane, a second illumination plane, a third illumination plane and a fourth illumination plane), each of which is provided with an LED load, such that the illumination angle of the single illumination plane is 45 °. Simultaneously, 3 infrared sensors (including a first infrared sensor PIR1, a second infrared sensor PIR2 and a third infrared sensor PIR3) are arranged, one infrared sensor is arranged between every two adjacent irradiation surfaces, and the detection angle of the three infrared sensors is at least 180 degrees. The cloud controls the controlled street lamp to illuminate according to the time of the internet, and meanwhile, the cloud is used for judging the working conditions (day/night states) of the 3 infrared sensors. For example, when the day (06:00-18:00) is set, the controlled street lamp is in the off and non-working state; and at night (18:00-06:00), the controlled street lamp is in a working state, namely 3 infrared sensors are turned on to sense infrared signals of the human body in real time, when the infrared sensors sense the infrared signals of the human body, the MUC circuit 41 judges the position of the target human body according to the sensed infrared signal intensity, and controls the LED load on the corresponding irradiation surface in the controlled street lamp to be lightened according to the position of the target human body. For example, when the first infrared sensor PIR1 detects that the target human body approaches the first illumination surface, the MUC circuit 41 controls the first LED load 113 of the first illumination surface to light up to illuminate the target human body; when the first infrared sensor PIR1 and the second infrared sensor PIR2 cooperate to detect that a target human body is about to enter a second irradiation surface from a first irradiation surface (when the target human body passes through the first irradiation surface and enters the second irradiation surface, the intensity of an infrared signal detected by the first infrared sensor PIR1 is changed from weak to strong and then becomes weak, and the intensity of an infrared signal detected by the second infrared sensor PIR2 is changed from weak to strong), the MUC circuit 41 controls the second LED load 123 of the second irradiation surface to be turned on; meanwhile, after the target human body enters the second irradiation surface, the MUC circuit 41 controls the first LED load 113 of the first irradiation surface to be turned off; and so on.

Claims

1. The utility model provides a multi-angle street lamp controlling means which characterized in that: the control device comprises a plurality of paths of LED load circuits, an LED power supply circuit, a signal sampling circuit, an Internet of things communication circuit, an auxiliary power supply circuit and a plurality of paths of infrared control circuits, wherein the LED power supply circuit is connected with the plurality of paths of LED load circuits and used for controlling the plurality of paths of LED load circuits to work, the signal sampling circuit is connected with the input end of the LED power supply circuit and used for acquiring electric quantity signals, the Internet of things communication circuit is connected with the signal sampling circuit and used for uploading the acquired electric quantity signals to the cloud end, the auxiliary power supply circuit is connected with the LED power supply circuit and used for providing working voltage in an auxiliary mode, and the plurality of paths of; and the Internet of things communication circuit is connected with the multi-path LED load circuit.

2. The multi-angle street lamp control device as claimed in claim 1, wherein: the LED power supply circuit comprises an alternating current power supply, an EMC filter circuit, a first rectifying filter circuit, a first starting circuit, a first front-stage spike pulse absorption circuit, a first transformer, a first rear-stage spike pulse absorption circuit, a first rear-stage output filter circuit, a first auxiliary winding circuit, a front-stage dimming circuit and a rear-stage dimming circuit which is isolated from the front-stage dimming circuit;

the alternating current power supply is connected with the EMC filter circuit; the EMC filter circuit is connected with the first rectifying filter circuit; the first starting circuit is connected with the first rectifying and filtering circuit; the primary winding of the first transformer is connected with the first rectifying and filtering circuit; the first pre-stage spike absorption circuit is connected with a primary winding of the first transformer in parallel; the secondary winding of the first transformer is connected with the first post-stage spike pulse absorption circuit; the first post-stage spike pulse absorption circuit is connected with the first post-stage output filter circuit; the first starting circuit and the first transformer are both connected with the first auxiliary winding circuit; the preceding stage dimming circuit is connected with the first auxiliary winding circuit; the rear-stage dimming circuit is connected with the auxiliary power supply circuit.

3. The multi-angle street lamp control device as claimed in claim 2, wherein: the EMC filter circuit includes a common mode inductance LF2 and a differential mode capacitance CX1 connected across the output of the common mode inductance LF 2.

4. The multi-angle street lamp control device as claimed in claim 2, wherein: the first rectifying and filtering circuit comprises a rectifier DB2, a capacitor C41, a capacitor C42 and an inductor L1; the inductor L1 is connected to one end of the rectifier DB2, one end of the capacitor C41 is connected to an input end of the inductor L1, one end of the capacitor C42 is connected to an output end of the inductor L1, and the other end of the rectifier DB2, the other end of the capacitor C41, and the other end of the capacitor C42 are grounded.

5. The multi-angle street lamp control device as claimed in claim 4, wherein: the first starting circuit comprises a resistor R48 connected with the input end of the inductor L1 and a resistor R49 connected with the resistor R48.

6. The multi-angle street lamp control device as claimed in claim 2, wherein: the first pre-stage spike absorption circuit comprises a resistor R42, a resistor R43, a capacitor C39 and a diode D7; the resistor R42, the resistor R43 and the capacitor C39 are connected in parallel and then connected in series with the diode D7.

7. The multi-angle street lamp control device as claimed in claim 2, wherein: the first post-stage spike absorption circuit comprises a resistor R37, a resistor R41, a capacitor C38 and a diode D4; the resistor R37 and the capacitor C38 are connected in series and then are arranged in parallel with the diode D4; the resistor R41 is arranged in parallel with the resistor R37.

8. The multi-angle street lamp control device as claimed in claim 2, wherein: the first post-stage output filter circuit comprises a capacitor EC4, a capacitor EC5, a capacitor EC6, a resistor R47 and a common-mode inductor LF1 which are arranged in parallel; one end of the capacitor EC4, the capacitor EC5, the capacitor EC6, the resistor R47 and the common mode inductor LF1 are connected to the ground in common.

9. The multi-angle street lamp control device as claimed in claim 2, wherein: the first auxiliary winding circuit comprises a first auxiliary winding rectifying and filtering circuit, a first auxiliary winding chip, a first protection circuit and a first adjusting circuit; the first auxiliary winding rectifying and filtering circuit is connected with an auxiliary winding of the first transformer; the first auxiliary winding rectifying and filtering circuit is connected with the first auxiliary winding chip through the first protection circuit; and the primary winding of the first transformer is connected with the first auxiliary winding chip through the first adjusting circuit.

10. A control method based on the multi-angle street lamp control device of any one of claims 1-9, characterized in that: the control method comprises the following steps:

the method comprises the following steps that a controlled street lamp is provided with a plurality of irradiation surfaces, and each path of LED load in a multi-path LED load circuit is arranged on one irradiation surface of the controlled street lamp; arranging each infrared sensor in the multi-path infrared control circuit between two adjacent irradiation surfaces;