Traffic signal lamp intelligent light supplementing device and light supplementing method based on real-time road condition

Abstract

The invention discloses an intelligent light supplementing device and method for a traffic signal lamp based on real-time road conditions, and provides the intelligent light supplementing device and method for the traffic signal lamp based on the real-time road conditions to solve the problems that an existing traffic signal lamp is poor in visibility in a low-light environment, light supplementing is not intelligent and the like. The device is composed of a machine shell, a light source, a light guide template, a cup holder, a light source driving circuit and the like, the machine shell is buckled with a protruding strip through a bent clamping plate, and assembling is convenient. The light source driving circuit comprises an anti-interference module, an AC-DC module, a boosting module, a driving module and the like, and power can be stably supplied. According to the light supplementing method, the constant current circuit is adjusted through the external controller and the control module according to real-time road conditions and ambient light, and intelligent control over light supplementing intensity and time is achieved. The system can improve the visibility of the signal lamp, guarantees the traffic safety, optimizes the structure, facilitates the maintenance, reduces the electromagnetic interference, saves energy, and reduces the light pollution.

Description

Technical Field

[0001] The present invention relates to the technical field of traffic lights, and specifically to an intelligent light supplement device and a light supplement method for traffic lights based on real-time road conditions. Background Art

[0002] In the field of intelligent transportation, traffic lights play a crucial role in maintaining traffic order and ensuring road safety. However, there are many problems with existing traffic lights in actual use. Especially in poor light conditions, such as at night or in bad weather (rain, fog, snow, etc.), the visibility of the traffic lights is greatly reduced. Drivers may have difficulty clearly identifying the indication status of the traffic lights, thus increasing the risk of traffic accidents. Currently, in order to improve the visibility of traffic lights in low-light environments, some areas adopt traditional light supplement methods, such as setting constantly-on auxiliary light sources around the traffic lights. However, this method has obvious defects. On the one hand, the constantly-on supplementary lights will cause unnecessary energy waste. On the other hand, it cannot be intelligently adjusted according to real-time road conditions and environmental light changes. In some cases, it may cause light pollution, affecting the visual experience of drivers and pedestrians, and even interfering with the normal operation of other traffic facilities. In addition, there are also deficiencies in the structural design of existing light supplement devices. The installation and disassembly are not convenient enough, which is not conducive to later maintenance and repair. Moreover, the internal circuit design is complex, the stability is poor, and it is easily affected by external electromagnetic interference, resulting in poor light supplement effects. Summary of the Invention

[0003] The purpose of the present invention is to provide an intelligent light supplement device and a light supplement method for traffic lights based on real-time road conditions, so as to solve problems such as poor visibility of existing traffic lights in low-light environments, non-intelligent light supplement methods, energy waste, light pollution, and unreasonable device structure and circuit design. Through the present invention, it is possible to automatically adjust the light supplement intensity and time according to real-time road conditions and environmental light, improve the visibility of traffic lights, ensure traffic safety, optimize the device structure, facilitate installation and maintenance, enhance the circuit stability, and reduce the influence of electromagnetic interference.

[0004] To solve the above technical problems, the present invention is realized through the following solutions: An intelligent light supplement device for traffic lights based on real-time road conditions of the present invention includes a housing and a light source provided inside the housing. The housing includes a bottom shell and a main body box snap-fitted to the bottom shell. The main body box has openings on both sides. The snap-fitting structure of the main body box and the bottom shell includes: A circle of convex strips provided along the inner wall of the main body box and close to the first opening of the main body box; Bent clamping plates provided at the corners of the bottom shell. The bent clamping plates have bending parts, and the bending parts can be elastically clamped to the convex strips; The inner wall of the main body box is also provided with a circular raised light source fixing part. On the surface of the light source fixing part facing the first opening, there is a circular raised straight groove. Axial concave and convex patterns are provided on the opposite sides of the straight groove, and the axial concave and convex patterns can allow the first screw to be screwed in. The intelligent supplementary lighting device further includes a power supply bracket, and the power supply bracket is fixed to the straight groove by a first screw. On the plate surface of the area outside the straight groove, a circular V-shaped groove is provided, and a plurality of screw holes are distributed along the V-shaped groove. The light source is fixed to the light source fixing part by a second screw passing through the screw holes. The intelligent supplementary lighting device further includes a light guide template. On the light incident surface of the light guide template, a plurality of raised reflecting cups are distributed. The narrow openings of the reflecting cups are arranged in one-to-one correspondence with the LEDs on the light source. Diffusion plates are provided at the wide openings of the light incident surface of the light guide template. The light incident surface of the diffusion plate is a plane, and its light emitting surface is covered with slightly convex fish scale patterns. The intelligent supplementary lighting device further includes a cup holder. The cup holder and the light guide template are buckled. The cup holder is provided with a plurality of cup openings, and the plurality of cup openings are arranged in one-to-one correspondence with the plurality of diffusion plates. The diffusion plates are located in the narrow opening end areas of the cup openings. The intelligent supplementary lighting device further includes a light source driving circuit, and the light source driving circuit controls the operation of the light source.

[0005] Further, the light source driving circuit includes: An anti-interference circuit, connected to the mains power supply; An AC-DC circuit, the input end of the AC-DC is connected to the anti-interference circuit; A boost circuit, electrically connected to the AC-DC circuit, and the boost circuit has two outputs; Two driving modules, electrically connected to the two outputs of the boost circuit in one-to-one correspondence. In any one driving module, there are a constant current circuit, a rectifying and filtering circuit, a control module and a feedback circuit. The input end of the constant current circuit is connected to the output end of the boost circuit, and its output end is connected to the rectifying and filtering circuit. The electrical input end of the control module is connected to the output end of the boost circuit, and its control end is respectively connected to the constant current circuit and the feedback circuit. The output end of the rectifying and filtering circuit is connected to the light source (3). The signal receiving end of the feedback circuit is also connected to the rectifying and filtering circuit. Among them, the feedback circuit is connected to an isolation circuit. The isolation circuit outputs a digital control signal and is connected to a power supply output circuit. The feedback circuit is also connected to the power supply output circuit.

[0006] Even further, the light source driving circuit performs anti-electromagnetic interference, AC-DC, boost correction, step-down constant current, rectifying and filtering on the mains power signal in sequence to drive the light source (3).

[0007] Further, the signal received by the isolation circuit comes from an external controller, which sends commands to the control module through the RS485 communication protocol.

[0008] Further, the anti-interference circuit includes a plurality of common-mode inductors connected in series and a noise filtering circuit composed of a plurality of capacitors. The plurality of common-mode inductors include: Common-mode inductor T1, the input end is connected to the L line and N line of the mains; Common-mode inductor T2, the input end is connected to the output end of the common-mode inductor T1; Common-mode inductor T3, the input end is connected to the output end of the common-mode inductor T2; The noise filtering circuit includes: Capacitor CX1, both ends are connected to the output end of the common-mode inductor T1. Two series-connected first resistors are also connected in parallel at both ends of the capacitor CX1. A thermistor NTC1 is also connected to the first end of the capacitor CX1. The other end of the thermistor NTC1 is connected to the L line of the input end of the common-mode inductor T2 and capacitor CY1. The other end of the capacitor CY1 is grounded. The second end of the capacitor CX1 is connected to the N line of the input end of the common-mode inductor T2 and capacitor CY8. The other end of the CY8 is grounded; Capacitor CX2, both ends are connected to the output end of the common-mode inductor T2. Two series-connected second resistors are also connected in parallel at both ends of the capacitor CX2.

[0009] Further, a relay K1 is also connected to the circuit between the common-mode inductor T1 and the common-mode inductor T2, and the relay K1 is controlled by the control module.

[0010] Further, the AC-DC circuit includes: Rectifier bridge DB1, the 2nd pin and the 3rd pin of the rectifier bridge DB1 are interconnected and connected to the L line of the output end of the common-mode inductor T3; the 4th pin of the rectifier bridge DB1 is connected to VIN-; Capacitors CY3 and CY7, the first end after the capacitors CY3 and CY7 are connected in series is connected to the 2nd pin of the rectifier bridge DB1, and the second end after the capacitors CY3 and CY7 are connected in series is connected to the N line of the output end of the common-mode inductor T3; Rectifier bridge DB2, the 2nd pin and the 3rd pin of the rectifier bridge DB2 are interconnected and connected to the N line of the output end of the common-mode inductor T3. Its 4th pin is connected to capacitor CY4. The other end of the capacitor CY4 is grounded and connected to the circuit node between the capacitor CY3 and the capacitor CY7. The 4th pin of the rectifier bridge DB2 is connected to VIN-. Its 1st pin is interconnected with the 1st pin of the rectifier bridge DB1; Capacitors C4 and C5, the first end of capacitor C4 is connected to pin 1 of rectifier bridge DB2 and the first end of inductor L2, the second end of capacitor C4 is connected to VIN-, the first end of capacitor C5 is connected to the second end of inductor L2, and its second end is connected to VIN-, the second end of inductor L2 outputs VIN and is connected to the boost circuit.

[0011] Furthermore, a boost control chip U1 is connected in the boost circuit. Pin ZCD2 of this boost control chip U1 is connected to capacitor C11, and the other end of capacitor C11 is grounded. Pin 2 of the boost control chip U1 is the FB pin, and its pins 3 to 6 are respectively connected to the first ends of resistor R30, capacitor C16, capacitor C17, and capacitor C19. The second ends of resistor R30, capacitor C16, capacitor C17, and capacitor C19 are interconnected. Resistor R25 and capacitor C15 are connected in series and then paralleled with capacitor C16. Capacitor C16 is also paralleled with resistor R26. Resistor R31 and capacitor C18 are connected in series and then paralleled with capacitor C17. Capacitor C19 is paralleled with resistor R32. Pin FFOLD of the boost control chip U1 is also connected to the cathode of diode D6, and the anode of diode D6 is respectively connected to resistor R9 and resistor R13. The other end of resistor R9 is connected to the PFCOK circuit, and the other end of resistor R13 is grounded; The second end of resistor R26 is connected to resistor RS1, the other end of resistor RS1 is connected to VIN-, and resistor RS1 and resistor RS2 are paralleled; Pin BO of the boost control chip U1 is respectively connected to resistor R40 and resistor R29. The other end of resistor R40 is connected to the second end of resistor R26. The other end of resistor R29 is connected to resistor R20. The other end of resistor R20 is connected to resistor R8. The other end of resistor R8 is connected to the VIN circuit. Resistor R40 is paralleled with capacitor C23; Pin CS of the boost control chip U1 is respectively connected to resistor R34 and capacitor C22. The other end of resistor R34 is connected to the VIN- circuit. The other end of capacitor C22 is connected to the first end of capacitor C21 and the second end of resistor R26. Capacitor C21 is paralleled with resistor R35. The second end of C21 is connected to pin LATCH of the boost control chip U1. Pin LATCH of the boost control chip U1 outputs the VDD circuit after being connected to resistor RT1; A capacitor C14 is connected between the 12th pin VCC of the boost control chip U1 and the 13th pin GND of the boost control chip U1. A capacitor C13 is connected between the 13th pin of the boost control chip U1 and the 15th pin PFCOK of the boost control chip U1. The 15th pin PFCOK of the boost control chip U1 outputs the PFCOK circuit, and the 12th pin VCC of the boost control chip U1 outputs the VDD circuit; The 16th pin ZCD1 of the boost control chip U1 outputs the ZCD1 circuit, and a capacitor C10 is connected to the 16th pin ZCD1 of the boost control chip U1. The other end of the capacitor C10 is grounded.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention intelligently adjusts supplementary lighting: Through the cooperation of an external controller and a light source driving circuit, it can automatically adjust the supplementary lighting intensity and time according to real-time road conditions and ambient light changes. When the traffic flow is large and the light is dim, it automatically increases the supplementary lighting brightness to ensure that the driver can clearly identify the traffic signal. When the traffic flow is small and the light is relatively good, it reduces the supplementary lighting intensity to avoid energy waste and light pollution, effectively improving the visibility and safety of traffic signals. 2. The present invention optimizes the structural design: The bottom shell and the main body box of the casing adopt a buckling structure of bent clamping plates and protrusions, which is convenient for installation and disassembly, greatly reducing the difficulty of later maintenance and repair. Designs such as the light source fixing part, straight groove, and V-shaped groove make the installation of the light source and the power supply bracket stable and reliable, ensuring the stability of the device during long-term use. 3. The present invention has efficient light propagation: The design of the reflecting cup and the diffusing plate on the light guide template can efficiently collect the light emitted by the light source and evenly diffuse the light through the micro-convex fish scale pattern of the diffusing plate, improving the utilization rate of light, enhancing the supplementary lighting effect, and enabling good visibility of the traffic signal from all angles. 4. The present invention has a stable circuit system: The anti-interference circuit in the light source driving circuit can effectively eliminate electromagnetic interference in the mains, ensuring the stable operation of the circuit. The coordinated operation of the AC - DC circuit, boost circuit, and each driving module provides a stable and suitable power supply for the light source, improving the reliability and service life of the device. At the same time, the remote control function realized through the RS485 communication protocol facilitates the centralized management and adjustment of the supplementary lighting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded view of the intelligent supplementary lighting device for traffic signals of the present invention.

[0014] Figure 2 It is an installation structure diagram of the main body box and the bottom shell of the present invention.

[0015] Figure 3This is the installation structure diagram of the light guide template and cup holder of the present invention.

[0016] Figure 4 This is the three-dimensional view of the visible first side of the light guide template of the present invention.

[0017] Figure 5 This is the enlarged structure diagram of the diffusion plate of the present invention.

[0018] Figure 6 This is the three-dimensional view of the visible second side of the light guide template of the present invention.

[0019] Figure 7 This is the structure diagram of the cup holder of the present invention.

[0020] Figure 8 This is the principle block diagram of the light source driving circuit of the present invention.

[0021] Figures 9-19 After the circuits are connected, the complete circuit diagram of the light source driving circuit of the present invention is formed.

[0022] Reference numerals in the drawings: bottom case 1, main body box 2, light source 3, light guide template 4, cup holder 5, power supply bracket 6, bent clamping plate 11, wire passing hole 12, light source fixing part 21, rib 22, straight groove 23, buckle hole 41, diffusion plate 42, reflecting cup 44, buckle post 51, cup mouth 52, first screw 61. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention. Obviously, the embodiments described in the present invention are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.

[0024] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] Embodiment 1: The specific structure of the present invention is as follows: Please refer to the attached Figures 1-19, an intelligent supplementary lighting device for traffic lights based on real-time road conditions according to the present invention, includes a housing and a light source 3 provided inside the housing. The housing includes a bottom shell 1 and a main body box 2 snap-connected to the bottom shell 1. The main body box 2 has openings on both sides. A wire passing hole 12 is provided in the middle of the bottom shell 1 for wires to pass through. The wire passes through the wire passing hole 12 and a waterproof sleeve is sleeved outside the wire, and the waterproof sleeve is fixed to the wire passing hole 12. A rear cover is further provided on the back of the main body box 2 of the present invention. A waterproof structure is provided between the rear cover and the main body box 2, and the rear cover has an opening through hole, and a waterproof structure is provided at the opening. A transparent cover is snap-connected to the front of the main body box 2, and a waterproof structure is provided between the transparent cover and the main body box 2.

[0026] The snap-connection structure between the main body box 2 and the bottom shell 1 includes: A circle of convex strips 22 provided along the inner wall of the main body box 2 and close to the first opening of the main body box 2; Bent clamping plates 11 provided at the corners of the bottom shell 1, the bent clamping plates 11 having a bent portion that can be elastically clamped to the convex strips 22 through elasticity.

[0027] An annular raised light source fixing portion 21 is further provided on the inner wall of the main body box 2. The light source fixing portion 21 has an annular raised straight groove 23 on the surface facing the first opening. Axial concave and convex patterns are provided on both opposite sides of the straight groove 23, and the first screw 61 can be screwed into the axial concave and convex patterns.

[0028] The intelligent supplementary lighting device further includes a power supply bracket 6, and the power supply bracket 6 is fixed to the straight groove 23 through the first screw 61.

[0029] On the plate surface of the area outside the straight groove 23, a circle of V-shaped grooves is provided, and a plurality of screw holes are distributed along the V-shaped grooves. The light source 3 is fixed to the light source fixing portion 21 through the second screw passing through the screw holes.

[0030] The intelligent supplementary lighting device further includes a light guide template 4. A plurality of raised reflecting cups 44 are distributed on the light incident surface of the light guide template 4. The narrow mouths of the reflecting cups 44 are arranged in one-to-one correspondence with the LEDs on the light source 3. Diffusion plates 42 are provided at the wide mouths of the light incident surface of the light guide template 4. The light incident surface of the diffusion plate 42 is a plane, and its light emitting surface is covered with micro-convex fish scale patterns; The intelligent supplementary lighting device further includes a cup holder 5. The cup holder 5 and the light guide template 4 are snap-connected. The cup holder 5 is provided with a plurality of cup mouths 52, and the plurality of cup mouths 52 are arranged in one-to-one correspondence with the plurality of diffusion plates 42, and the diffusion plates 42 are located in the narrow mouth end areas of the cup mouths.

[0031] Specifically, the buckling structure of the cup holder 5 and the light guide template 4 includes a buckling hole 41 provided at the edge of the light guide template 4 and a buckling post 51 provided at the edge of the cup holder 5. The buckling post 51 is buckled into the buckling hole 41 to achieve the buckling connection between the cup holder 5 and the light guide template 4.

[0032] The intelligent light supplement device further includes a light source driving circuit, which controls the operation of the light source 3.

[0033] The light source driving circuit includes: An anti-interference circuit, connected to the mains power; An AC-DC circuit, the input end of which is connected to the anti-interference circuit; A boost circuit, electrically connected to the AC-DC circuit, and the boost circuit has two outputs; Two driving modules, which are electrically connected to the two outputs of the boost circuit one by one. In any one of the driving modules, there are a constant current circuit, a rectifying and filtering circuit, a control module, and a feedback circuit. The input end of the constant current circuit is connected to the output end of the boost circuit, and its output end is connected to the rectifying and filtering circuit. The electrical input end of the control module is connected to the output end of the boost circuit, and its control end is respectively connected to the constant current circuit and the feedback circuit. The output end of the rectifying and filtering circuit is connected to the light source 3, and the signal receiving end of the feedback circuit is also connected to the rectifying and filtering circuit. Among them, the feedback circuit is connected to an isolation circuit, the isolation circuit outputs a digital control signal and is connected to a power supply output circuit, and the feedback circuit is also connected to the power supply output circuit.

[0034] The light source driving circuit performs anti-electromagnetic interference, AC-DC, boost correction, variable voltage constant current, and rectifying and filtering on the mains power signal in sequence to drive the light source 3.

[0035] The signal of the isolation circuit is received from an external controller, and the external controller sends commands to the control module through the RS485 communication protocol.

[0036] The anti-interference circuit includes a plurality of common mode inductors connected in series and a noise filtering circuit composed of a plurality of capacitors. The plurality of common mode inductors include: A common mode inductor T1, the input end of which is connected to the L line and N line of the mains power; A common mode inductor T2, the input end of which is connected to the output end of the common mode inductor T1; A common mode inductor T3, the input end of which is connected to the output end of the common mode inductor T2; The noise filtering circuit includes: The capacitor CX1 has its two ends connected to the output ends of the common-mode inductor T1. Two first resistors in series are also connected in parallel across the two ends of the capacitor CX1. The first end of the capacitor CX1 is further connected to a thermistor NTC1, and the other end of the thermistor NTC1 is connected to the input end L line of the common-mode inductor T2 and the capacitor CY1. The other end of the capacitor CY1 is grounded. The second end of the capacitor CX1 is connected to the input end N line of the common-mode inductor T2 and the capacitor CY8, and the other end of the CY8 is grounded; The capacitor CX2 has its two ends connected to the output ends of the common-mode inductor T2. Two second resistors in series are also connected in parallel across the two ends of the capacitor CX2.

[0037] A relay K1 is also connected to the circuit between the common-mode inductor T1 and the common-mode inductor T2, and this relay K1 is controlled by a control module.

[0038] The AC-DC circuit includes: A rectifier bridge DB1. The 2nd pin and the 3rd pin of the rectifier bridge DB1 are interconnected and connected to the output end L line of the common-mode inductor T3; the 4th pin of the rectifier bridge DB1 is connected to VIN-. Capacitors CY3 and CY7. The first end of the series connection of the capacitors CY3 and CY7 is connected to the 2nd pin of the rectifier bridge DB1, and the second end of the series connection of the capacitors CY3 and CY7 is connected to the output end N line of the common-mode inductor T3; A rectifier bridge DB2. The 2nd pin and the 3rd pin of the rectifier bridge DB2 are interconnected and connected to the output end N line of the common-mode inductor T3. Its 4th pin is connected to the capacitor CY4. The other end of the capacitor CY4 is grounded and connected to the circuit node between the capacitors CY3 and CY7. The 4th pin of the rectifier bridge DB2 is connected to VIN-, and its 1st pin is interconnected with the 1st pin of the rectifier bridge DB1; Capacitors C4 and C5. The first end of the capacitor C4 is connected to the 1st pin of the rectifier bridge DB2 and the first end of the inductor L2. The second end of the capacitor C4 is connected to VIN-. The first end of the capacitor C5 is connected to the second end of the inductor L2, and its second end is connected to VIN-. The second end of the inductor L2 outputs VIN and is connected to the boost circuit.

[0039] There is a boost control chip U1 connected in the boost circuit. The 1st pin ZCD2 of the boost control chip U1 is connected to a capacitor C11, and the other end of the capacitor C11 is grounded. The 2nd pin of the boost control chip U1 is the FB pin, and its 3rd to 6th pins are correspondingly connected to the first ends of a resistor R30, a capacitor C16, a capacitor C17, and a capacitor C19. The second ends of the resistor R30, the capacitor C16, the capacitor C17, and the capacitor C19 are interconnected. A resistor R25 and a capacitor C15 are connected in series and then paralleled with the capacitor C16. The capacitor C16 is also paralleled with a resistor R26. A resistor R31 and a capacitor C18 are connected in series and then paralleled with the capacitor C17. The capacitor C19 is paralleled with a resistor R32. The 6th pin FFOLD of the boost control chip U1 is also connected to the negative pole of a diode D6, and the positive pole of the diode D6 is respectively connected to a resistor R9 and a resistor R13. The other end of the resistor R9 is connected to the PFCOK circuit, and the other end of the resistor R13 is grounded; The second end of the resistor R26 is connected to a resistor RS1, the other end of the resistor RS1 is connected to VIN-, and the resistor RS1 and a resistor RS2 are paralleled; The 7th pin BO of the boost control chip U1 is respectively connected to a resistor R40 and a resistor R29. The other end of the resistor R40 is connected to the second end of the resistor R26. The other end of the resistor R29 is connected to a resistor R20, the other end of the resistor R20 is connected to a resistor R8, the other end of the resistor R8 is connected to the VIN circuit, and the resistor R40 is paralleled with a capacitor C23; The 9th pin CS of the boost control chip U1 is respectively connected to a resistor R34 and a capacitor C22. The other end of the resistor R34 is connected to the VIN- circuit. The other end of the capacitor C22 is connected to the first end of a capacitor C21 and the second end of the resistor R26. The capacitor C21 is paralleled with a resistor R35. The second end of the C21 is connected to the 10th pin LATCH of the boost control chip U1. The 10th pin LATCH of the boost control chip U1 outputs a VDD circuit after being connected to a resistor RT1; A capacitor C14 is connected between the 12th pin VCC and the 13th pin GND of the boost control chip U1. A capacitor C13 is connected between the 13th pin and the 15th pin PFCOK of the boost control chip U1. The 15th pin PFCOK of the boost control chip U1 outputs a PFCOK circuit, and the 12th pin VCC of the boost control chip U1 outputs a VDD circuit; The 16th pin ZCD1 of the boost control chip U1 outputs a ZCD1 circuit, and the 16th pin ZCD1 of the boost control chip U1 is connected to a capacitor C10, and the other end of the capacitor C10 is grounded.

[0040] The following is the working principle of the drive circuit: Mains power enters the power supply and first passes through a noise filtering device composed of common mode inductors T1, T2, T3, and capacitors CX1, CX2, which effectively prevents grid noise from entering the power supply, ensures the normal operation of the power supply, and at the same time prevents the noise inside the power supply from flowing into the grid, effectively protecting the purity of the grid. Then, the rectifier bridges DB1 and DB2, and capacitors C4 and C5 convert the input AC mains power into direct current. The direct current is then calculated inside the chip U1, and the switching control of MOS transistors Q5 and Q7 is used to charge and discharge inductors T4 and T5. Inductors T4 and T5 then discharge through diodes D4 and D8 to capacitors C8 and C9 to form a stable high-voltage direct current. Through this process, the power supply has a high power factor. The high-voltage direct current is then divided into two buck constant current units and one power supply unit. As Figures 9-19 shown, the chip U7 collects the output information of the 1# path and feeds it back to the chip U5 through the isolation optocoupler U9. The detailed and accurate algorithm inside the chip U5 calculates the conduction time of MOS transistors Q15 and Q16, thereby controlling the charging and discharging energy of the primary coil of the transformer T8. Then, the energy is magnetically coupled and transferred to the secondary coil of the transformer T8. The energy of the secondary coil of the transformer T8 forms a low-voltage direct current through diodes D17 and D27, and capacitors C49 and C50. The low-voltage direct current can directly drive the light source 3.

[0041] The chip U13 collects the output information of the 2# path and feeds it back to the chip U11 through the isolation optocoupler U15. The detailed and accurate algorithm inside the chip U11 calculates the conduction time of transistors Q21 and Q22, thereby controlling the charging and discharging energy of the primary coil of the transformer T10. Then, the energy is magnetically coupled and transferred to the secondary coil of the transformer T10. The energy of the secondary coil of the transformer T10 forms a low-voltage direct current through diodes D21 and D31, and capacitors C82 and C83. The low-voltage direct current can directly drive the light source 3.

[0042] The chip U19 collects the output information of the 3# path and feeds it back to the chip U17 through the isolation optocoupler U21. The detailed and accurate algorithm inside the chip U17 calculates the conduction time of transistors Q27 and Q28, thereby controlling the charging and discharging energy of the primary coil of the transformer T12. Then, the energy is magnetically coupled and transferred to the secondary coil of the transformer T12. The energy of the secondary coil of the transformer T12 forms a low-voltage direct current through diodes D37 and D47, and capacitors C115 and C116. The low-voltage direct current can directly drive the light source 3.

[0043] The chip U25 collects the output information of the 4# channel and feeds it back to the chip U23 through the isolation optocoupler U27. The detailed and accurate algorithm inside the chip U23 calculates the conduction time of the transistors Q33 and Q34, thereby controlling the charging and discharging energy of the primary coil of the transformer T14. Then, the energy is magnetically coupled and transmitted to the secondary coil of the transformer T14. The energy of the secondary coil of the transformer T14 forms low-voltage direct current through the diodes D41 and D51, and the capacitors C148 and C149. The low-voltage direct current can directly drive the light source 3.

[0044] The chip U2 controls the charging and discharging of the coil between pins 4-5 by monitoring the voltage of the coil between pins 1-2 of the transformer T7, so as to realize the stable DC voltage output of the coil between pins 1-2, the coil between pins 6-7, and the coil between pins 9-10. The stable DC voltage is responsible for providing the working voltage for the internal chip of the power supply and the external 12V auxiliary power output voltage.

[0045] In terms of the control module; the external digital control signal is transmitted to the main control MCU U1 through the proprietary RS485 communication protocol of the present invention. After receiving the instruction, the internal program of the main control MCU U1 parses it and outputs PWM1, PWM2, PWM3, and PWM4 with corresponding dimming ratios respectively. Then, they are respectively transmitted to the chip U7 through the chip U10 on the power supply main board, to the chip U13 through the chip U16, to the chip U19 through the chip U22, and to the chip U25 through the chip U28. Through this process, the dimming and switching on / off of the 1# road LED lights and the 2# road LED lights are respectively realized. Embodiment 2:

[0046] A light supplementing method for an intelligent traffic signal light supplementing device, and the intelligent traffic signal light supplementing device in Embodiment 1 is applied to this light supplementing method.

[0047] In summary, the intelligent adjustment and light supplement of the present invention: through the cooperation of the external controller and the light source drive circuit, it can automatically adjust the light supplement intensity and time according to the real-time road conditions and environmental light changes. When the traffic flow is large and the light is dim, the light supplement brightness is automatically increased to ensure that the driver can clearly identify the traffic signal lights; when the traffic flow is small and the light is relatively good, the light supplement intensity is reduced to avoid energy waste and light pollution, effectively improving the visibility and safety of the traffic signal lights. The present invention optimizes the structural design: the bottom shell and the main body box of the machine shell adopt the buckling structure of the bent card plate and the convex strip, which is convenient for installation and disassembly, and greatly reduces the difficulty of later maintenance and repair. The designs of the light source fixing part, the straight groove, the V-shaped groove, etc. make the installation of the light source and the power supply bracket stable and reliable, ensuring the stability of the device during long-term use. Efficient light propagation of the present invention: The design of the reflector cup and diffuser plate on the light guide template can efficiently collect the light emitted by the light source, and uniformly diffuse the light through the micro-convex fish scale pattern of the diffuser plate, improving the utilization rate of light, enhancing the supplementary light effect, and enabling the traffic signal light to have good visibility at all angles. Stable circuit system of the present invention: The anti-interference circuit in the light source drive circuit can effectively eliminate the electromagnetic interference in the mains electricity, ensuring the stable operation of the circuit. The coordinated operation of the AC - DC circuit, boost circuit, and each drive module provides a stable and suitable power supply for the light source, improving the reliability and service life of the device. At the same time, the remote control function realized through the RS485 communication protocol facilitates the centralized management and adjustment of the supplementary light device.

[0048] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An intelligent supplementary lighting device for traffic lights based on real-time road conditions, comprising a housing and a light source (3) arranged inside the housing. The housing includes a bottom shell (1) and a main body box (2) snap-connected to the bottom shell (1). The main body box (2) has openings on both sides. It is characterized in that, The snap-fit structure of the main body box (2) and the bottom shell (1) includes: A ring of convex strips (22) provided along the inner wall of the main body box (2) and near the first opening of the main body box (2); Bent clamping plates (11) provided at the corners of the bottom shell (1), the bent clamping plates (11) having a bent portion that can be snap-fitted to the convex strips (22) by elastic force; A ring of raised light source fixing parts (21) is further provided on the inner wall of the main body box (2). The surface of the light source fixing part (21) facing the first opening is provided with a ring of raised straight grooves (23). Axial concave and convex patterns are provided on the opposite sides of the straight grooves (23), and the first screw (61) can be screwed into the axial concave and convex patterns; The intelligent supplementary lighting device further includes a power supply bracket (6), and the power supply bracket (6) is fixed to the straight groove (23) by the first screw (61); On the plate surface of the outer region of the straight groove (23), a ring of V-shaped grooves is provided, and a plurality of screw holes are distributed along the V-shaped grooves. The light source (3) is fixed to the light source fixing part (21) by the second screw passing through the screw holes; The intelligent supplementary lighting device further includes a light guide template (4). A plurality of raised reflecting cups (44) are distributed on the light incident surface of the light guide template (4). The narrow openings of the reflecting cups (44) are arranged in one-to-one correspondence with the LEDs on the light source (3). Diffusion plates (42) are provided at the wide openings of the light incident surface of the light guide template (4). The light incident surface of the diffusion plate (42) is a plane, and its light emitting surface is covered with micro-convex fish scale patterns; The intelligent supplementary lighting device further includes a cup holder (5). The cup holder (5) and the light guide template (4) are snap-fitted. The cup holder (5) is provided with a plurality of cup openings, and the plurality of cup openings are arranged in one-to-one correspondence with the plurality of diffusion plates (42). The diffusion plates (42) are located in the narrow opening end regions of the cup openings; The intelligent supplementary lighting device further includes a light source driving circuit, and the light source driving circuit controls the operation of the light source (3).

2. The intelligent supplementary lighting device for traffic lights based on real-time road conditions according to claim 1, characterized in that The light source driving circuit includes: An anti-interference circuit, connected to the mains; An AC-DC circuit, the input end of the AC-DC is connected to the anti-interference circuit; A boost circuit, electrically connected to the AC-DC circuit, and the boost circuit has two outputs; Two driving modules, electrically connected to the two outputs of the boost circuit in one-to-one correspondence. In any one of the driving modules, a constant current circuit, a rectifying and filtering circuit, a control module, and a feedback circuit are included. The input end of the constant current circuit is connected to the output end of the boost circuit, and its output end is connected to the rectifying and filtering circuit. The electrical input end of the control module is connected to the output end of the boost circuit, and its control end is respectively connected to the constant current circuit and the feedback circuit. The output end of the rectifying and filtering circuit is connected to the light source (3). The signal receiving end of the feedback circuit is also connected to the rectifying and filtering circuit. Among them, the feedback circuit is connected to an isolation circuit, and the isolation circuit outputs a digital control signal and is connected to a power supply output circuit. The feedback circuit is also connected to the power supply output circuit.

3. The intelligent supplementary lighting device for traffic lights based on real-time road conditions according to claim 2, characterized in that, The light source driving circuit performs anti-electromagnetic interference, AC-DC, boost correction, step-down constant current, and rectifying and filtering on the mains signal in sequence to drive the light source (3).

4. The intelligent supplementary lighting device for traffic lights based on real-time traffic conditions according to claim 2, characterized in that, The signal of the isolation circuit is received from an external controller, and the external controller sends commands to the control module through the RS485 communication protocol.

5. The intelligent supplementary lighting device for traffic lights based on real-time road conditions according to claim 2, characterized in that, The anti-interference circuit includes a plurality of common-mode inductors connected in series and a noise filtering circuit composed of a plurality of capacitors. The plurality of common-mode inductors include: Common-mode inductor T1, the input end is connected to the L line and N line of the commercial power supply; Common-mode inductor T2, the input end is connected to the output end of the common-mode inductor T1; Common-mode inductor T3, the input end is connected to the output end of the common-mode inductor T2; The noise filtering circuit includes: Capacitor CX1, both ends are connected to the output end of the common-mode inductor T1. Two first resistors in series are connected in parallel at both ends of the capacitor CX1. A thermistor NTC1 is also connected to the first end of the capacitor CX1, and the other end of the thermistor NTC1 is connected to the input end L line of the common-mode inductor T2 and capacitor CY1. The other end of the capacitor CY1 is grounded. The second end of the capacitor CX1 is connected to the input end N line of the common-mode inductor T2 and capacitor CY8. The other end of the CY8 is grounded; Capacitor CX2, both ends are connected to the output end of the common-mode inductor T2. Two second resistors in series are connected in parallel at both ends of the capacitor CX2.

6. The intelligent supplementary lighting device for traffic lights based on real-time road conditions according to claim 5, characterized in that, A relay K1 is also connected to the circuit between the common-mode inductor T1 and the common-mode inductor T2, and the relay K1 is controlled by the control module.

7. An intelligent supplementary lighting device for traffic lights based on real-time road conditions according to claim 5, characterized in that, The AC-DC circuit includes: Rectifier bridge DB1, the 2nd pin and the 3rd pin of the rectifier bridge DB1 are interconnected and connected to the output end L line of the common-mode inductor T3; the 4th pin of the rectifier bridge DB1 is connected to VIN-; Capacitors CY3 and CY7, the first end after the capacitors CY3 and CY7 are connected in series is connected to the 2nd pin of the rectifier bridge DB1, and the second end after the capacitors CY3 and CY7 are connected in series is connected to the output end N line of the common-mode inductor T3; Rectifier bridge DB2, the 2nd pin and the 3rd pin of the rectifier bridge DB2 are interconnected and connected to the output end N line of the common-mode inductor T3. Its 4th pin is connected to capacitor CY4. The other end of the capacitor CY4 is grounded and connected to the circuit node between the capacitor CY3 and the capacitor CY7. The 4th pin of the rectifier bridge DB2 is connected to VIN-, and its 1st pin is interconnected with the 1st pin of the rectifier bridge DB1; Capacitors C4 and C5, the first end of the capacitor C4 is connected to the 1st pin of the rectifier bridge DB2 and the first end of the inductor L2. The second end of the capacitor C4 is connected to VIN-. The first end of the capacitor C5 is connected to the second end of the inductor L2, and its second end is connected to VIN-. The second end of the inductor L2 outputs VIN and is connected to the boost circuit.

8. An intelligent supplementary lighting device for traffic lights based on real-time traffic conditions according to claim 7, characterized in that A boost control chip U1 is connected in the boost circuit. The 1st pin ZCD2 of the boost control chip U1 is connected to a capacitor C11, and the other end of the capacitor C11 is grounded. The 2nd pin of the boost control chip U1 is the FB pin, and its 3rd to 6th pins are respectively connected to the first end of a resistor R30, the first end of a capacitor C16, the first end of a capacitor C17, and the first end of a capacitor C19. The second ends of the resistor R30, the capacitor C16, the capacitor C17, and the capacitor C19 are interconnected. A resistor R25 and a capacitor C15 are connected in series and then paralleled with the capacitor C16. The capacitor C16 is also paralleled with a resistor R26. A resistor R31 and a capacitor C18 are connected in series and then paralleled with the capacitor C17. The capacitor C19 is paralleled with a resistor R32. The 6th pin FFOLD of the boost control chip U1 is also connected to the negative electrode of a diode D6, and the positive electrode of the diode D6 is respectively connected to a resistor R9 and a resistor R13. The other end of the resistor R9 is connected to the PFCOK circuit, and the other end of the resistor R13 is grounded; The second end of the resistor R26 is connected to a resistor RS1, the other end of the resistor RS1 is connected to VIN-, and the resistor RS1 and a resistor RS2 are paralleled; The 7th pin BO of the boost control chip U1 is respectively connected to a resistor R40 and a resistor R29. The other end of the resistor R40 is connected to the second end of the resistor R26. The other end of the resistor R29 is connected to a resistor R20, the other end of the resistor R20 is connected to a resistor R8, and the other end of the resistor R8 is connected to the VIN circuit. The resistor R40 is paralleled with a capacitor C23; The 9th pin CS of the boost control chip U1 is respectively connected to a resistor R34 and a capacitor C22. The other end of the resistor R34 is connected to the VIN- circuit. The other end of the capacitor C22 is connected to the first end of a capacitor C21 and the second end of the resistor R26. The capacitor C21 is paralleled with a resistor R35. The second end of the C21 is connected to the 10th pin LATCH of the boost control chip U1. The 10th pin LATCH of the boost control chip U1 outputs the VDD circuit after being connected to a resistor RT1; A capacitor C14 is connected between the 12th pin VCC and the 13th pin GND of the boost control chip U1. A capacitor C13 is connected between the 13th pin and the 15th pin PFCOK of the boost control chip U1. The 15th pin PFCOK of the boost control chip U1 outputs the PFCOK circuit, and the 12th pin VCC of the boost control chip U1 outputs the VDD circuit; The 16th pin ZCD1 of the boost control chip U1 outputs the ZCD1 circuit, and the 16th pin ZCD1 of the boost control chip U1 is connected to a capacitor C10, and the other end of the capacitor C10 is grounded.

9. A light supplementing method for an intelligent light supplementing device of a traffic signal lamp, characterized in that, The intelligent supplementary light device for traffic lights according to any one of claims 1-8 is applied to this supplementary light method.

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