A high-voltage power take-off wire lamp and a control method for its application

Abstract

The application discloses a high-voltage power-taking wire lamp and a control method for application thereof, and relates to the technical field of intelligent lighting. The high-voltage power-taking wire lamp comprises a shell, the shell comprises an upper shell and a lower shell which are hingedly connected to form a flip cover structure, and a wire passing channel is arranged between the upper shell and the lower shell and used for passing a high-voltage power transmission wire; a current mutual inductance power-taking module is integrated in the shell and used for inductively obtaining electric energy from an external high-voltage power transmission wire; a direct current-direct current conversion and voltage stabilizing module is used for converting the obtained electric energy into stable working voltage; and a light-emitting module is arranged on the shell. The upper shell and the lower shell are in an asymmetric geometric configuration in a cross section perpendicular to the axial direction of the high-voltage power transmission wire, and the mass distribution of the lower shell is greater than that of the upper shell, so that the lamp body posture is stable when the wire lamp is hung on the high-voltage power transmission wire. The application provides a high-voltage power-taking wire lamp which is simple in structure, stable in installation posture and efficient in power taking.

Description

Technical Field

[0001] This application relates to the field of intelligent lighting technology, and in particular to a control method for a high-voltage power supply conductor lamp and its application. Background Technology

[0002] With the rapid development of power systems, overhead high-voltage power grids are becoming increasingly dense, posing a significant threat to aviation safety, especially for low-altitude flights such as helicopters and drones. Therefore, the market urgently needs a highly integrated, efficient, and stable overhead power grid-specific obstruction light solution. Improving existing obstruction light technology to make it suitable for use as an aviation obstruction light on high-voltage AC transmission lines would be of great significance.

[0003] In existing technologies, there are various methods for designing and manufacturing obstruction lights that draw power from high-voltage transmission lines. For the casing, non-metallic components such as plastic and fiberglass are typically used; for power control, bridge rectifier circuits are commonly used. Furthermore, traditional instrument transformer-powered lighting fixtures are also widely adopted.

[0004] However, these existing technologies have significant drawbacks. Existing high-voltage transmission line power-drawing obstruction lights have complex shapes and structures, suffer from severe arcing problems at sharp edges, and exhibit poor resistance to aging and corrosion. Furthermore, traditional transformer-powered lights have low power extraction efficiency and require high starting current. Moreover, these products are prone to tilting and flipping during installation and operation.

[0005] In summary, how to provide a new type of high-voltage power supply conductor lamp with a simple structure, stable installation posture, and high power extraction efficiency is the focus of research for those skilled in the art. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this application provides a novel high-voltage power-collecting conductor lamp with a simple structure, stable installation posture, and high power extraction efficiency. It also provides a control method for the high-voltage power-collecting conductor lamp and its application.

[0007] Firstly, the objective of this invention is achieved through the following technical solution: A high-voltage power supply line lamp, comprising: The outer casing includes an upper shell and a lower shell that are hinged together to form an openable and closable flip-top structure; and a cable passage is provided between the upper shell and the lower shell for high-voltage transmission lines to pass through. A current transformer power extraction module, integrated within the housing, is used to obtain electrical energy from external high-voltage transmission lines. A DC-DC converter and voltage regulator module is electrically connected to the current transformer power extraction module and is used to convert the acquired electrical energy into a stable operating voltage. The light-emitting module is mounted on the housing and is powered by the DC-DC converter and voltage regulator module. The upper shell and the lower shell have an asymmetrical geometric configuration in a cross section perpendicular to the axis of the high-voltage transmission line, and the mass distribution of the lower shell is configured to be greater than that of the upper shell, so that when the conductor lamp is suspended on the high-voltage transmission line, the overall center of gravity is naturally located below the high-voltage transmission line, so as to maintain the stability of the lamp body posture under the condition of no external constraints.

[0008] By adopting the above technical solution, this invention provides a high-voltage power supply conductor lamp with a unique asymmetrical shell structure design and advanced mechatronics system integration. Specifically, through shell mass distribution reconstruction, the outer shell is designed as a flip-top structure with an asymmetrical geometric configuration consisting of an upper shell and a lower shell, with the lower shell having a larger mass distribution than the upper shell. This structural design forces the overall center of gravity of the conductor lamp to be lowered below the axis of the high-voltage transmission line. When the lamp body is suspended on the line, gravity forms an automatic self-aligning torque, effectively suppressing lamp head flipping or swaying caused by wind load or vibration. Without relying on external straps, feet, or other restraint devices, the lamp can maintain the stability of the light-emitting module's orientation throughout its entire life cycle, significantly improving the reliability of aviation warnings. This achieves passive self-stabilization of the lamp's attitude. In high-altitude installation scenarios using drones, the flip-top structure allows operators (or the drone) to complete installation simply by opening the flip-top, placing the external high-voltage power transmission line into the cable channel, and then closing and locking it. This eliminates high-risk steps such as attaching safety belts, significantly simplifying the high-altitude operation process, reducing installation difficulty and fall risk, and optimizing the convenience and safety of high-altitude installation. Therefore, this invention provides a novel high-voltage power supply line lamp with a simple structure, stable installation posture, and efficient power extraction.

[0009] In a preferred embodiment of this application: a high-density counterweight is provided inside the lower shell, and the high-density counterweight is made of a material with a density of not less than 19.0 g / cm³; a gravity sensing unit and a wireless communication unit are also integrated in the inner cavity of the outer shell, the gravity sensing unit is used to monitor the attitude information of the lead lamp in real time, and the attitude information is sent to an external terminal through the wireless communication unit.

[0010] By adopting the above technical solution, the high-density counterweight can increase the mass distribution of the lower shell, making it easier for the overall center of gravity of the conductor lamp to be located below the high-voltage transmission line, further improving the posture stability of the lamp body under the condition of no external constraints; the gravity sensing unit and the wireless communication unit can monitor and send the posture information of the conductor lamp to the external terminal in real time, so as to facilitate timely understanding of the lamp body status.

[0011] In a preferred embodiment of this application: the current transformer power supply module includes a current transformer and a bridgeless Boost unit; the bridgeless Boost unit includes a first boost inductor, a second boost inductor, a fast recovery diode, a first power switch, and a second power switch; The output terminal of the secondary winding of the current transformer is coupled to the first boost inductor and the second boost inductor; The drain of the first power switch is connected to one end of the first boost inductor, and the source is grounded; the drain of the second power switch is connected to one end of the second boost inductor, and the source is grounded. The other ends of the first boost inductor and the second boost inductor are connected to the anode of the fast recovery diode. The cathode of the fast recovery diode serves as the DC output terminal of the current transformer power supply module and is connected to the input terminal of the DC-DC converter and voltage regulator module. The gates of the first power switch and the second power switch respectively receive PWM drive signals from the microcontroller. The microcontroller is configured to execute a digital PID algorithm to dynamically adjust the duty cycle of the PWM drive signal according to the sampled output voltage feedback signal, so as to realize power conversion.

[0012] By adopting the above technical solution, the current transformer power extraction module uses a combination of current transformer and bridgeless Boost unit to obtain electrical energy from external high-voltage transmission lines; the connection method of each component in the bridgeless Boost unit can perform boost rectification processing on the induced electrical energy; the microcontroller executes digital PID algorithm to dynamically adjust the duty cycle of PWM drive signal according to the output voltage feedback signal to realize power conversion, improve the power conversion efficiency by 15% compared with the traditional solution, and make the power conversion efficiency reach 85%.

[0013] In a preferred embodiment, the microcontroller described in this application is model GD32F310F8F6TR. The PWM drive signals output by the timer channel of the microcontroller are respectively connected to the gate of the first power switch and the gate of the second power switch via current limiting resistors. When the microcontroller outputs a high-level PWM drive signal from its output pin, the high-level PWM drive signal is connected to the gates of the first power switch and the second power switch, controlling the first power switch and the second power switch to turn on.

[0014] By adopting the above technical solution, specifying the microcontroller model as GD32F310F8F6TR helps ensure accurate adaptation of the circuit design. By connecting the PWM signal output from the microcontroller's timer channel to the gate of the power switch through a current-limiting resistor, and combining the microcontroller's execution of a digital PID algorithm to dynamically adjust the duty cycle of the PWM drive signal, efficient power conversion can be achieved. Triggering the microcontroller to output a high-level PWM signal controls the first and second power switches to turn on, avoiding excessively high abnormal voltages and ensuring stable output voltage.

[0015] In a preferred embodiment of this application: the radius of curvature of the outer contour edge of the housing is not less than 8mm, and a conductive aluminum ring is coaxially disposed on the outer periphery of the light-emitting module's light-transmitting cover, the conductive aluminum ring and the housing being an integrally formed structure.

[0016] By adopting the above technical solution, the outer contour edge of the housing is designed with a large rounded corner transition with a curvature radius of not less than 8mm, and a conductive aluminum ring integrally formed with the housing is set coaxially on the outer periphery of the light-transmitting cover. This can effectively improve the distribution characteristics of the high voltage electric field on the surface of the lamp body. At the same time, the large rounded corner transition of the outer contour edge of the housing and the conductive aluminum ring set on the outer periphery of the light-emitting module light-transmitting cover can balance the electric field distribution and significantly suppress local corona discharge and radio interference (RI).

[0017] In a preferred embodiment of this application, the closed end of the flip-top structure is pre-locked by a half-threaded screw; The semi-threaded screw includes a smooth section and a threaded section; The smooth section of the semi-threaded screw passes through the through holes located at corresponding positions on the upper and lower shells in sequence, and a locking nut is screwed onto the protruding end; A spring washer is provided between the head of the semi-threaded screw and the outer surface of the upper shell to provide a continuous elastic clamping force in the pre-locked state.

[0018] By adopting the above technical solution, a fastening structure consisting of a semi-threaded screw, a spring washer, and an outer locking nut is used at the closing end of the flip cover. The smooth section passes through the through holes of the upper and lower shells to achieve pre-locking. Since the smooth section has no threads, it avoids thread wear on the through holes of the outer shell during repeated opening and closing. The disc spring washer provides continuous axial elastic clamping force in the pre-tightened state, effectively counteracting the loosening tendency caused by transportation vibration or temperature cycling.

[0019] In a preferred embodiment, this application further includes two external wire clamps, which are symmetrically fixed to the housing and located on both sides of the wire passage radially. Each of the external clamps includes two fixed clamping arms respectively disposed on the upper shell and the lower shell. The fixed clamping arms are fixed to the outer side wall of the upper shell or the lower shell, and the fixed clamping arms are provided with arc-shaped clamping surfaces. The two fixed clamping arms and the movable clamping arm are provided with threaded adjusting bolts to clamp or release the high-voltage transmission line placed between the arc-shaped clamping surfaces of the two fixed clamping arms.

[0020] By adopting the above technical solution, two external clamps are symmetrically arranged on the outside of the housing. Each clamp consists of a fixed clamping arm that is fixed to the outer wall of the upper and lower housings respectively. Their arc-shaped clamping surfaces together enclose the high-voltage conductor, and the clamping force is applied by adjusting the bolts. The dual-point clamping structure forms symmetrical constraints on both sides of the conductor's radial direction, effectively limiting the lamp body's sliding and rotational degrees of freedom along the conductor's axial direction.

[0021] In a preferred embodiment of this application: the outer casing is an all-aluminum casing; the inner cavity of the all-aluminum casing also integrates a gravity sensing unit and a wireless communication unit, the gravity sensing unit is used to monitor the attitude information of the lead lamp in real time, and the attitude information is sent to an external terminal through the wireless communication unit.

[0022] By adopting the above technical solution and using an all-aluminum shell, it combines high strength, lightweight, and excellent electromagnetic shielding performance. Combined with an embedded gravity sensor and wireless communication unit, it can continuously monitor the spatial attitude of the lamp after installation and wirelessly transmit tilt angle data. This configuration is particularly suitable for automated UAV installation scenarios: the ground station can determine whether the installation is in place based on real-time attitude feedback, or prompt adjustments to the clamping force, solving the aircraft trimming problem caused by external loads.

[0023] Secondly, the objective of this invention is achieved through the following technical solution: A control method for a high-voltage power supply conductor lamp, the high-voltage power supply conductor lamp comprising a flip-top housing, a current transformer power supply module, a DC-DC converter and voltage regulator module, a light-emitting module, a gravity sensing unit, and a microcontroller; the method includes the following steps: The current transformer power extraction module obtains AC power from the high-voltage transmission line suspended in the wire passage of the outer casing. The AC power is input to the bridgeless Boost unit for rectification and boosting. The bridgeless Boost unit includes a first power switch and a second power switch. The microcontroller executes a digital PID control algorithm to generate PWM drive signals based on the sampled output bus voltage feedback signal, thereby controlling the on and off of the first power switch and the second power switch to maintain the stability of the output bus voltage. The gravity sensing unit monitors the tilt angle of the conductor lamp relative to the horizontal plane in real time, and transmits the tilt angle data to an external terminal through the wireless communication unit. When the output bus voltage is detected to exceed the preset overvoltage threshold, the microcontroller outputs a PWM drive signal with a 100% duty cycle to cut off the energy conversion of the bridgeless Boost unit.

[0024] By adopting the above technical solution, this invention realizes the energy management and status monitoring capabilities of the power line lamp by executing an integrated control process that includes bridgeless Boost digital PID control, gravity attitude sensing, and hardware priority overvoltage protection. At the energy level, the bridgeless topology and digital PID control algorithm ensure efficient and stable power supply over a wide current range. This control method constructs a highly robust, monitorable, and self-protected closed-loop control system, providing high-quality assurance for the reliable operation of high-voltage power-drawing power line lamps in unattended, long-cycle operation scenarios.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The asymmetrical geometric configuration of the upper and lower shells, with the lower shell having a larger mass distribution than the upper shell, places the center of gravity of the conductor lamp below the high-voltage transmission line, improving the lamp body's resistance to tipping and significantly enhancing installation stability; 2. The current transformer power supply module uses a bridgeless Boost unit and digital PID algorithm to adjust the duty cycle of the PWM drive signal, achieving a power conversion efficiency of 85%, which is 15% higher than the traditional solution; 3. The large radius angle and aluminum ring design reduce the arc occurrence rate to 0.01 times / thousand hours. Attached Figure Description

[0026] Figure 1 This is an overall structural diagram of a high-voltage power supply wire lamp according to one embodiment of this application; Figure 2 This is a front view of a high-voltage power supply conductor lamp according to an embodiment of this application; Figure 3 This is an overall cross-sectional view of a high-voltage power supply wire lamp according to an embodiment of this application; Figure 4 This is a control circuit diagram of a high-voltage power supply wire lamp according to one embodiment of this application; Figure 5 This is a flowchart of a control method for a high-voltage power supply conductor lamp according to an embodiment of this application.

[0027] Explanation of reference numerals in the attached figures: 1. Outer shell; 11. Upper shell; 12. Lower shell; 2. Light-emitting module; 21. LED light source assembly; 22. Driver board; 23. Lampshade; 3. Conductive aluminum ring; 4. Half-threaded screw; 5. External wire clamp; 51. Fixing clamp arm. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1 to 5 This application will be described in further detail.

[0029] Example 1 In one embodiment, such as Figures 1 to 3As shown, this application discloses a high-voltage power supply line lamp, including a housing 1, a current transformer power supply module, a DC-DC converter and voltage regulator module, and a light-emitting module 2. The housing 1 consists of an upper shell 11 and a lower shell 12 connected by a hinge to form an openable flip-top structure. A cable passage for high-voltage power transmission lines is provided between the upper shell 11 and the lower shell 12. The current transformer power supply module is integrated inside the housing 1 and can obtain electrical energy from the external high-voltage power transmission line. The DC-DC converter and voltage regulator module is electrically connected to the current transformer power supply module and can convert the obtained electrical energy into a stable operating voltage. The light-emitting module 2 is located within the housing. 1. Powered by a DC-DC converter and voltage regulator module, the upper shell 11 and the lower shell 12 have an asymmetrical geometric configuration in the cross section perpendicular to the axis of the high-voltage transmission line, and the mass distribution of the lower shell 12 is greater than that of the upper shell 11. This makes the overall center of gravity naturally located below the high-voltage transmission line when the lamp is suspended on the high-voltage transmission line, so as to maintain the stability of the lamp body under the condition of no external constraints. This design can avoid the lamp body from tilting and flipping during installation and use, and improve the stability and reliability of the installation. This is because the center of gravity is lower than the conductor, and according to the physical principle, the stability of the object is better.

[0030] Specifically, the outer casing 1 includes an upper casing 11 and a lower casing 12. The upper casing 11 and lower casing 12 are made of metal materials, such as all-aluminum or aluminum alloy, which offer good strength and corrosion resistance. This embodiment uses an all-aluminum outer casing 1. The upper casing 11 and lower casing 12 are connected by a hinge, which can be a concealed hinge or a hinged hinge. The concealed hinge is hidden inside the outer casing 1, making the appearance more concise. The hinged hinge has a simple structure and reliable connection. A hinged hinge generally consists of two blades and a central pin. The two blades are fixed to the upper casing 11 and lower casing 12 respectively, and the pin enables rotational connection. A wire passage is provided between the upper casing 11 and lower casing 12. The shape of the wire passage is usually circular or elliptical to accommodate high-voltage transmission lines of different shapes and sizes. The edges of the wire passage can be smoothed to avoid scratching the wires.

[0031] The outer contour edge curvature radius of the outer shell 1 is not less than 8mm, and the outer contour edge of the outer shell 1 adopts a large rounded corner design, which can avoid the generation of electric arc and improve the safety of the product. Furthermore, a conductive aluminum ring 3 is coaxially arranged on the outer periphery of the light-emitting module 2's light-transmitting cover, and the conductive aluminum ring 3 is an integrally formed structure with the outer shell 1. The conductive aluminum ring 3 can further reduce the possibility of electric arcing because it can even out the electric field distribution and suppress local corona discharge. The large rounded corner design and the placement of the conductive aluminum ring 3 effectively reduce the generation of electric arcs, improving the safety and reliability of the product under high-voltage environments.

[0032] The closed end of the flip-top structure is pre-locked by a half-threaded screw 4. The half-threaded screw 4 includes a smooth section and a threaded section. The smooth section of the half-threaded screw 4 passes through through holes located at corresponding positions on the upper shell 11 and the lower shell 12, and a locking nut is screwed onto the protruding end. A disc spring washer is provided between the head of the half-threaded screw 4 and the outer surface of the upper shell 11. The disc spring washer can provide continuous elastic clamping force in the pre-locked state to prevent the mounting screw from falling off.

[0033] like Figures 1 to 3 As shown, the high-voltage power supply conductor lamp also includes two external clamps 5, which are symmetrically fixed to the outer casing 1 and located on both sides of the radial direction of the wire passage. Each external clamp 5 includes two fixed clamping arms 51 respectively located on the upper casing 11 and the lower casing 12. The fixed clamping arms 51 are fixed to the outer wall of the upper casing 11 or the lower casing 12, and the fixed clamping arms 51 have arc-shaped clamping surfaces, which can better fit the high-voltage transmission conductor. There are threaded adjusting bolts between the two fixed clamping arms 51 and the movable clamping arms. By rotating the adjusting bolts, the high-voltage transmission conductor placed between the arc-shaped clamping surfaces of the two fixed clamping arms 51 can be clamped or released.

[0034] The light-emitting module 2 includes an LED light source assembly 21, a driver board 22, and a lampshade 23. The LED light source assembly 21 is mounted on the upper shell 11. The driver board 22 is fixed inside the upper shell 11 and electrically connected to the LED light source assembly 21. The lampshade 23 is sealed on the upper shell 11 and covers the light source assembly. Specifically, the top of the upper shell 11 has a raised boss with a receiving cavity. The driver board 22 is mounted inside the receiving cavity, the LED light source assembly 21 is mounted on top of the receiving cavity and above the driver board 22, and the lampshade 23 is sealed on the boss.

[0035] like Figure 4 As shown, with Figure 4 Taking the circuit diagram shown as an example, the light control circuit on the driver board 22 includes a control and protection unit, which is mainly composed of microcontroller U2. The PA5 pin of microcontroller U2 outputs a PWM signal, which is connected to the IN pin of driver chip U3 through current-limiting resistor R11. The model of microcontroller U2 is GD32F310F8F6TR. The OUTD pin of PWM driver chip U3 outputs a drive signal, which is clamped by diode D6 and drives the gates of the first power switch Q2 and the second power switch Q3 respectively; the model of PWM driver chip U3 is EG3001.

[0036] The lead-line lamp control circuit also includes a hardware overvoltage protection circuit. This circuit uses a voltage divider resistor network (resistors R10 and R12) at the +VCC output, with the divider point connected to the IN pin of the PWM driver chip U3. RV1 is a varistor, DZ1 is a gas discharge tube, and TVS1 and TVS2 are transient voltage suppression diodes. When the +VCC voltage exceeds a preset threshold, the OUTD pin of the PWM driver chip U3 outputs a high-level PWM drive signal. This high-level signal is connected to +VCC via pull-up resistor R12, and the microcontroller U2 continuously outputs a high-level PWM signal, continuously driving the power switch and achieving hard shutdown protection.

[0037] like Figure 4 As shown, with Figure 4 Taking the circuit diagram shown as an example, the current transformer power supply module includes a current transformer LF1 and a bridgeless boost unit. The current transformer LF1 converts the large current in the high-voltage transmission line into a small current, and consists of an iron core and windings. The iron core can be made of laminated silicon steel sheets, which have high permeability and low loss characteristics. The windings are generally made of enameled wire. The bridgeless boost unit includes a first boost inductor L1, a second boost inductor, a fast recovery diode D1, and a first power switch Q2 and a second power switch Q3. The first power switch Q2 is responsible for conducting during the positive half-cycle, and the second power switch Q3 is responsible for conducting during the negative half-cycle. The first boost inductor L1 and the second boost inductor can be ferrite core inductors, which have high permeability and low loss characteristics. The fast recovery diode D1 has the ability to quickly recover reverse current, which can improve the efficiency of the circuit. The first power switch Q2 and the second power switch Q3 are N-type MOSFETs. The secondary winding output of current transformer LF1 is coupled to the first boost inductor L1 and the second boost inductor L3. The drain of the first power switch Q2 is connected to one end of the first boost inductor L1, and the source is grounded. The drain of the second power switch Q3 is connected to one end of the second boost inductor L3, and the source is grounded. The other ends of the first boost inductor L1 and the second boost inductor L3 are connected to the anode of the fast recovery diode D1. The cathode of the fast recovery diode D1 serves as the DC output terminal (+VCC) of the current transformer power supply module and is connected to the input terminal of the DC-DC converter and voltage regulator module.

[0038] Capacitors C9 and C29~C33 are input / output filter capacitors to smooth voltage fluctuations; capacitors C3, C4, and C5 are intermediate node bypass capacitors to improve dynamic response. The gates of the first power switch Q2 and the second power switch Q3 respectively receive PWM drive signals from the microcontroller U2. The microcontroller U2 is configured to execute a digital PID algorithm to dynamically adjust the duty cycle of the PWM drive signal based on the sampled output voltage feedback signal to achieve high-efficiency power conversion.

[0039] The DC-DC converter and voltage regulator module includes a first buck chip U5 and a second buck chip U4, both model number SY8009. The first buck chip U5 has its VIN terminal connected to +VCC, its GND terminal grounded, and its FB terminal feedback the output voltage through a voltage divider resistor network (R28). Its EN terminal is connected to a high-level enable. The BOOT terminal is connected to capacitor C21, and the LX terminal is connected to inductor L5, resulting in an output of +9.5V. The second buck chip U4 has its VIN terminal connected to +VCC, its GND terminal grounded, and its FB terminal feedback the output voltage through a voltage divider resistor network (R22). Its EN terminal is connected to a high-level enable. The BOOT terminal is connected to capacitor C20, and the LX terminal is connected to inductor L4, resulting in an output of +3.3V. The +3.3V output, after being filtered by capacitor C13, powers the microcontroller U2 and other digital circuits.

[0040] The LED light source component 21 is connected to the main power path through the CN2 interface, with the positive terminal connected to +VCC and the negative terminal connected to ground through the current limiting resistor R6. The LED light source component 21 is controlled by the PWM signal output from the PA4 pin of the microcontroller U2, and the brightness dimming is achieved by adjusting the duty cycle.

[0041] The implementation principle of this high-voltage power-harvesting conductor lamp is as follows: This high-voltage power-harvesting conductor lamp utilizes a current inductor power-harvesting module to obtain electrical energy from the high-voltage transmission line. This energy is then converted into a stable operating voltage by a DC-DC converter and voltage regulator module to power the light-emitting module 2. The flip-top structure of the outer shell 1 facilitates installation and maintenance. The asymmetrical geometric configuration of the upper shell 11 and lower shell 12, along with the design that the lower shell 12 has a larger mass distribution than the upper shell 11, ensures that the center of gravity of the conductor lamp is lower than that of the high-voltage transmission line, effectively improving the installation stability of the lamp body and avoiding tilting and flipping problems. This results in a significant improvement in both stability and power harvesting efficiency.

[0042] Example 2 The difference between this embodiment and Embodiment 1 is that a high-density counterweight is provided inside the lower shell 12. This high-density counterweight is made of a material with a density of not less than 19.0 g / cm³, such as tungsten alloy, which has the characteristics of high density and high strength. A miniature linear motor is also provided inside the lower shell 12 of the high-voltage power supply lamp. The stator of the miniature linear motor is fixed to the inner wall of the lower shell 12, and the mover is rigidly connected to the high-density counterweight. The output shaft of the miniature linear motor is arranged parallel to the extension direction of the wire passage.

[0043] The high-density counterweight weighs 50g and has a volume of only about 2.6cm³, and is fixed to the end of the mover rod of the micro linear motor. The inner cavity of the outer casing 1 also integrates a gravity sensing unit and a wireless communication unit. The gravity sensing unit can be an accelerometer or a gyroscope. The accelerometer measures the acceleration of an object in three axes to determine its attitude; the gyroscope measures the angular velocity of an object to detect its rotation. In this embodiment, the gravity sensing unit uses an MPU-6050 six-axis inertial measurement unit (IMU), with a total weight of approximately 2g.

[0044] The wireless communication unit can use a Bluetooth module or a LoRa module, such as the nRF52832 Bluetooth 5.0 Low Energy module, which weighs approximately 1g. Bluetooth modules are characterized by low power consumption and short-range communication; LoRa modules offer the advantages of long-range communication and low power consumption. The gravity sensor unit is used to monitor the posture information of the guide light in real time and transmit this information to an external terminal, such as a mobile phone or computer, via the wireless communication unit, allowing users to easily monitor the status of the guide light in real time.

[0045] The miniature linear motor is a coreless linear motor, model FIT044. The stator of the miniature linear motor is fixed to the inner wall of the lower housing 12, and the mover is rigidly connected to the high-density counterweight. The control terminal of the miniature linear motor is electrically connected to the output terminal of a gravity sensing unit, which detects the tilt angle of the lamp relative to the horizontal plane. When the gravity sensing unit detects the tilt of the lamp, it sends a signal to the miniature linear motor. The control terminal of the linear motor receives a PWM position command from the microcontroller U2. The miniature linear motor drives the high-density counterweight to move, adjusting the center of gravity of the lamp body and maintaining its balance.

[0046] The dynamic trim control logic is as follows: When the lead light is mounted on the drone for transportation, the gravity sensing unit detects the tilt of the aircraft caused by the external load (such as roll angle > 5°) and uploads the data to the flight control system through the wireless communication unit; the ground station software generates a trim prompt based on this, or automatically sends a command to the microcontroller to drive the micro linear motor to move the counterweight to the compensation position, so that the center of gravity of the entire light is realigned with the center of gravity axis of the drone.

[0047] To ensure system operation during transportation and debugging when not in contact with high-voltage power lines, and to address power supply issues when not installed, an 18650 lithium-ion battery (2000mAh capacity, 45g weight) is embedded within the lower casing 12, connected to the system power network via the TP4056 charging management chip. After installation: when the bridgeless Boost unit outputs +VCC > 4.2V, the TP4056 automatically switches to grid power priority and trickle charges the battery; when not installed, the battery provides power to the gravity sensing unit, wireless module, and micro-motor. The casing of the wire light also has a hidden Micro-USB port, allowing for on-site debugging via a portable power bank, or direct power supply from the flight controller during transport via the drone's PSDK interface.

[0048] Furthermore, in one embodiment, a double-layer supercapacitor (also known as a supercapacitor) is connected in parallel across the DC bus (+VCC) of the bridgeless Boost output. The double-layer supercapacitor is model CAP-5R5C105, with a capacitance of 1.0F, a rated voltage of 5.5V, and a weight of approximately 2g. The double-layer supercapacitor is used to instantly release stored energy when the system generates peak current demand during the startup of the micro linear motor or when the LED is momentarily bright, preventing the +VCC bus voltage from dropping and avoiding MCU reset or communication interruption. The double-layer supercapacitor is connected in parallel with the lithium battery at the same power node.

[0049] The implementation principle of this embodiment is as follows: the high-density counterweight further lowers the center of gravity of the wire lamp, improving the stability of the lamp body. The integration of the gravity sensing unit and the wireless communication unit allows users to monitor the posture information of the wire lamp in real time, promptly detect and address issues such as lamp tilting or flipping, further enhancing the reliability and safety of the product. Compared to existing technologies, this embodiment adds intelligent monitoring functionality. It should be noted that the total weight of the newly added modules in this embodiment is as follows: The tungsten alloy counterweight weighs 50g, the miniature linear motor weighs 10g, and the MPU-6050+nRF52832 weighs 3g; the 18650 battery + TP4056 + supercapacitor weigh approximately 50g, for a total additional weight of approximately 113g.

[0050] Assuming the original lamp body weighs 4kg, the weight increase is only 2.8%, far below the safe mechanical load-bearing capacity of the high-voltage conductor, which typically allows a suspended load of >5kg. More importantly, this weight increase is actively used for center of gravity adjustment: by arranging high-density counterweights at the bottom of the lower shell 12 and combining them with dynamic adjustments by a micro motor, the center of gravity of the entire lamp is ultimately kept below the high-voltage transmission conductor.

[0051] In another embodiment, such as Figure 5As shown, this application also discloses a control method for a high-voltage power supply conductor lamp, which is applied to a high-voltage power supply conductor lamp as described above.

[0052] A control method for a high-voltage power supply conductor lamp specifically includes the following steps: S1: AC power is obtained by induction from the high-voltage transmission line suspended in the wire passage of the casing through the current transformer power extraction module.

[0053] In this embodiment, the current transformer power extraction module refers to a device that uses the principle of electromagnetic induction to couple the alternating current in the high-voltage transmission line into low-voltage alternating current that can be used by the electronic system; the current transformer power extraction module includes a high-permeability iron core and a secondary winding, and can realize energy transfer without physical electrical connection.

[0054] Specifically, when the conductor lamp is installed on an operating high-voltage transmission line through a cable passage, the power frequency alternating current flowing through the conductor generates an alternating magnetic flux in the core of the current transformer, which in turn induces an alternating voltage in the secondary winding. The voltage amplitude dynamically changes with the magnitude of the conductor current, typically ranging from AC 5V to 200V, serving as the input source for subsequent rectifier and boost circuits.

[0055] S2: Input AC power to the bridgeless Boost unit for rectification and boosting. The bridgeless Boost unit includes a first power switch and a second power switch.

[0056] In this embodiment, the induced AC current is directly connected to the input terminal of the bridgeless Boost unit, alternately driving the first power switch and the second power switch to conduct. During one half-cycle of the power frequency, only one switch operates, and the current stores energy through the corresponding boost inductor; at the moment the switch is turned off, the inductor releases energy and charges the output capacitor through the fast recovery diode, forming a stable DC bus voltage (denoted as +VCC).

[0057] S3: The microcontroller executes a digital PID control algorithm to generate PWM drive signals based on the sampled output bus voltage feedback signal, thereby controlling the on and off of the first and second power switches to maintain the stability of the output bus voltage.

[0058] In this embodiment, the digital PID control algorithm refers to the microcontroller calculating the error in real time based on voltage feedback and synthesizing the control output through three adjustment quantities: proportional (P), integral (I), and derivative (D) to achieve closed-loop voltage regulation of the Boost boost process.

[0059] Specifically, the microcontroller U2 samples +VCC through a voltage divider resistor network to obtain the feedback voltage value. If +VCC is detected to be lower than the target value (e.g., 24V), the PWM duty cycle is reduced. A larger duty cycle in the PWM drive signal results in a lower voltage, and vice versa, thus increasing output energy. Conversely, the duty cycle is reduced when +VCC is higher than the target value.

[0060] S4: The tilt angle of the guide light relative to the horizontal plane is monitored in real time through the gravity sensing unit, and the tilt angle data is sent to the external terminal through the wireless communication unit.

[0061] In this embodiment, the gravity sensing unit collects triaxial acceleration data at a fixed frequency of 10Hz and calculates the pitch and roll angles of the lamp body relative to the horizontal plane using an internal algorithm. When the lead lamp is mounted on a drone for transport, if the roll angle is detected to be greater than 5° for more than 2 seconds, it is determined to be an abnormal center of gravity shift. At this time, the system sends an encrypted data packet containing the angle value, timestamp, and device ID to the ground station APP via Bluetooth module. Maintenance personnel can then determine whether to adjust the mounting position or trigger the automatic balancing process.

[0062] S5: When the output bus voltage is detected to exceed the preset overvoltage threshold, the microcontroller outputs a PWM drive signal with a 100% duty cycle to cut off the energy conversion of the bridgeless Boost unit.

[0063] In this embodiment, a voltage divider network is set at the +VCC output terminal, with its divider point connected to the non-inverting input of the comparator and the inverting input connected to the reference voltage. When a lightning strike or operational overvoltage causes +VCC to momentarily spike above the Zener diode's regulation value, the Zener diode directly conducts, and the microcontroller outputs a PWM drive signal with a 100% duty cycle, i.e., a continuously high-level signal. This continuous high-level signal keeps the first and second power switches continuously conducting, thereby reducing the voltage and cutting off the energy output of the bridgeless Boost unit.

[0064] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0065] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the high-voltage power take-off lead lamp can be divided into different functional units or modules to complete all or part of the functions described above.

[0066] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A high-voltage power supply conductor lamp, characterized in that, include: The outer shell (1) includes an upper shell (11) and a lower shell (12) that are hinged together to form an openable and closable flip-top structure; and a wire passage is provided between the upper shell (11) and the lower shell (12) for high-voltage transmission lines to pass through. The current transformer power extraction module is integrated inside the housing (1) and is used to obtain electrical energy from the external high-voltage transmission line. A DC-DC converter and voltage regulator module is electrically connected to the current transformer power extraction module and is used to convert the acquired electrical energy into a stable operating voltage. The light-emitting module (2) is disposed on the outer shell (1) and is powered by the DC-DC converter and voltage regulator module; The upper shell (11) and the lower shell (12) have an asymmetrical geometric configuration on a cross section perpendicular to the axis of the high-voltage transmission line, and the mass distribution of the lower shell (12) is configured to be greater than that of the upper shell (11), so that when the conductor lamp is suspended on the high-voltage transmission line, the overall center of gravity is naturally located below the high-voltage transmission line, so as to maintain the stability of the lamp body posture under the condition of no external constraints.

2. The high-voltage power supply conductor lamp according to claim 1, characterized in that, The lower shell (12) is equipped with a high-density counterweight block, which is made of a material with a density of not less than 19.0 g / cm³. The inner cavity of the outer shell (1) is also equipped with a gravity sensing unit and a wireless communication unit. The gravity sensing unit is used to monitor the attitude information of the lead lamp in real time and send the attitude information to an external terminal through the wireless communication unit.

3. A high-voltage power supply conductor lamp according to claim 1, characterized in that, The current transformer power supply module includes a current transformer and a bridgeless Boost unit; the bridgeless Boost unit includes a first boost inductor, a second boost inductor, a fast recovery diode, a first power switch, and a second power switch. The output terminal of the secondary winding of the current transformer is coupled to the first boost inductor and the second boost inductor; The drain of the first power switch is connected to one end of the first boost inductor, and the source is grounded; the drain of the second power switch is connected to one end of the second boost inductor, and the source is grounded. The other ends of the first boost inductor and the second boost inductor are connected to the anode of the fast recovery diode. The cathode of the fast recovery diode serves as the DC output terminal of the current transformer power supply module and is connected to the input terminal of the DC-DC converter and voltage regulator module. The gates of the first power switch and the second power switch respectively receive PWM drive signals from the microcontroller. The microcontroller is configured to execute a digital PID algorithm to dynamically adjust the duty cycle of the PWM drive signal according to the sampled output voltage feedback signal, so as to realize power conversion.

4. A high-voltage power supply conductor lamp according to claim 3, characterized in that, The microcontroller is model GD32F310F8F6TR. The PWM drive signals output by the timer channel of the microcontroller are connected to the gate of the first power switch and the gate of the second power switch through current limiting resistors. When the voltage at the DC output terminal exceeds a preset threshold, the output pin of the microcontroller outputs a high-level PWM drive signal. The high-level PWM drive signal is connected to the gates of the first power switch and the second power switch to control the first power switch and the second power switch to turn on.

5. A high-voltage power supply conductor lamp according to claim 1, characterized in that, The outer contour edge curvature radius of the outer shell (1) is not less than 8mm, and a conductive aluminum ring (3) is coaxially arranged on the outer periphery of the light-emitting module (2). The conductive aluminum ring (3) and the outer shell (1) are integrally formed.

6. A high-voltage power supply conductor lamp according to claim 1, characterized in that, The closed end of the flip cover structure is pre-locked by a half-thread screw (4); The semi-threaded screw (4) includes a smooth section and a threaded section; The smooth section of the semi-tooth screw (4) passes through the through holes located at corresponding positions on the upper shell (11) and the lower shell (12) in sequence, and a locking nut is screwed onto the protruding end; A spring washer is provided between the head of the semi-threaded screw (4) and the outer surface of the upper shell (11) to provide a continuous elastic clamping force in the pre-locked state.

7. A high-voltage power supply conductor lamp according to claim 1, characterized in that, It also includes two external wire clamps (5), which are symmetrically fixed to the outer shell (1) and located on both sides of the wire passage radially. Each of the external clamps (5) includes two fixed clamping arms (51) respectively disposed on the upper shell (11) and the lower shell (12). The fixed clamping arms (51) are fixed to the outer side wall of the upper shell (11) or the lower shell (12), and the fixed clamping arms (51) are provided with arc-shaped clamping surfaces. The two fixed clamping arms (51) are provided with threaded adjusting bolts between the movable clamping arms to clamp or release the high-voltage transmission line placed between the arc-shaped clamping surfaces of the two fixed clamping arms (51).

8. A high-voltage power supply conductor lamp according to claim 7, characterized in that, The outer shell (1) is an all-aluminum shell; the inner cavity of the all-aluminum shell also integrates a gravity sensing unit and a wireless communication unit. The gravity sensing unit is used to monitor the attitude information of the wire lamp in real time, and sends the attitude information to an external terminal through the wireless communication unit.

9. A control method for a high-voltage power supply conductor lamp, characterized in that, The high-voltage power supply lamp includes a flip-top housing, a current transformer power supply module, a DC-DC converter and voltage regulator module, a light-emitting module, a gravity sensing unit, and a microcontroller; the method includes the following steps: The current transformer power extraction module obtains AC power from the high-voltage transmission line suspended in the wire passage of the housing. The AC power is input to the bridgeless Boost unit for rectification and boosting. The bridgeless Boost unit includes a first power switch and a second power switch. The microcontroller executes a digital PID control algorithm to generate PWM drive signals based on the sampled output bus voltage feedback signal, thereby controlling the on and off of the first power switch and the second power switch to maintain the stability of the output bus voltage. The gravity sensing unit monitors the tilt angle of the lead lamp relative to the horizontal plane in real time, and transmits the tilt angle data to an external terminal through the wireless communication unit. When the output bus voltage is detected to exceed the preset overvoltage threshold, the microcontroller outputs a PWM drive signal with a 100% duty cycle to cut off the energy conversion of the bridgeless Boost unit.

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