LED-PV energy supply torsional vibration data acquisition device and working method

Abstract

The application discloses an LED-photovoltaic energy supply torsional vibration data acquisition device and a working method, and belongs to the technical field of torsional vibration monitoring. In view of the problems of unreliable power supply, difficult maintenance and poor speed adaptability in long-term high-speed rotating shaft torsional vibration monitoring, the application adopts a fixed ground LED lamp to emit light energy to a flexible photovoltaic panel rotating with the shaft, converts the light energy into electric energy to supply power for a torsional vibration data acquisition module, and reliably fixes the components on the shaft through a triple anti-dropping structure; the collected torsional vibration signals are transmitted to a ground receiving end in a wireless mode; millisecond-level continuous data transmission, maintenance-free, power supply power not affected by speed and convenient disassembly and assembly are realized.

Description

Technical Field

[0001] This invention relates to the field of torsional vibration monitoring technology, and in particular to an LED-photovoltaic power supply torsional vibration data acquisition device and its working method. Background Technology

[0002] The statements in this section are merely to provide background information related to the present invention and do not necessarily constitute prior art.

[0003] In industries such as power, steel, and shipbuilding, key rotating equipment such as steam turbine generator sets, desulfurization circulating pumps, and sintering machine main shafts need to operate continuously for a long time. Online monitoring of their torsional vibration is crucial for preventing fatigue fracture and ensuring production safety.

[0004] However, existing power supply solutions have fundamental flaws: battery power is limited by its endurance, requires periodic shutdowns for replacement, and cannot achieve millisecond-level continuous data transmission; slip ring power transmits power through carbon brush contacts, resulting in a complex mechanism, rapid carbon brush wear at high speeds, high failure rates, and difficult maintenance; electromagnetic induction power supply efficiency is heavily dependent on the rotational shaft speed, with significant power fluctuations during low-frequency or variable-frequency speed regulation, and the energy source must be close to the shaft surface, posing safety hazards during maintenance and disassembly. Therefore, existing technologies cannot provide a continuous, speed-independent, and easily installed wireless power supply for torsional vibration acquisition modules on high-speed rotating shafts, making it difficult for online monitoring systems for rotating machinery to achieve long-term maintenance-free operation. Critical equipment faces significant safety risks such as fatigue fracture and shaft failure due to the inability to detect torsional vibration anomalies in a timely manner. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an LED-photovoltaic powered torsional vibration data acquisition device and its operating method. The device uses an LED light fixed to the ground to emit light energy to a flexible photovoltaic panel that rotates with the shaft. The light energy is converted into electrical energy and then wirelessly powered to the torsional vibration data acquisition module, enabling maintenance-free, speed-adaptive, and easy-to-install online monitoring of the torsional vibration of the rotating shaft.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, the present invention provides an LED-photovoltaic power supply torsional vibration data acquisition device, comprising: Rotation axis; An LED light is fixedly installed on the ground beside the rotating shaft; the light-emitting surface of the LED light faces the direction of the rotating shaft; the LED light is electrically connected to the fixed-end transceiver power supply unit; The flexible photovoltaic panel is mounted on the rotating shaft; the light-receiving surface of the flexible photovoltaic panel faces the direction of the LED light; the flexible photovoltaic panel is electrically connected to the torsional vibration data acquisition module fixed on the rotating shaft, and the torsional vibration data acquisition module is wirelessly connected to the fixed-end transceiver power supply unit.

[0007] Preferably, the light-receiving surface of the flexible photovoltaic panel is continuously arranged circumferentially along the rotation axis and faces the direction of the LED light.

[0008] Preferably, the flexible photovoltaic panel is fixed on a flexible photovoltaic panel fixing base.

[0009] Preferably, the flexible photovoltaic panel fixing base is made of a flexible fabric material and is fixed to the flexible photovoltaic panel by adhesive bonding.

[0010] Preferably, the torsional vibration data acquisition module is fixed on the acquisition module mounting base.

[0011] Preferably, the mounting base of the acquisition module is made of rigid metal material and is fixed to the torsional vibration data acquisition module by bolts.

[0012] Preferably, it also includes a magnetic positioning pin, the bottom of which is provided with a magnet for magnetically positioning and fixing the flexible photovoltaic panel and the torsional vibration data acquisition module onto the rotating shaft.

[0013] Preferably, the neck of the magnetic positioning pin is provided with a self-locking buckle for locking the flexible photovoltaic panel fixing base and the torsional vibration data acquisition module fixing base onto the magnetic positioning pin.

[0014] Preferably, the top of the magnetic positioning pin is provided with a through hole, and an annular locking steel wire rope is inserted into the through hole. The steel wire rope connects each magnetic positioning pin in series and locks it around the rotating shaft.

[0015] In a second aspect, the present invention provides a method for operating an LED-photovoltaic power supply torsional vibration data acquisition device, the specific steps of which include: The LED lights are powered by an external power supply through an LED rectifier module, and the LED lights emit light energy in the direction of the rotation axis. The flexible photovoltaic panel mounted on the rotating shaft receives the light energy and converts it into electrical energy to power the torsional vibration data acquisition module; the torsional vibration data acquisition module sends the data to the wireless receiving module, which then sends it to the host computer.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes ground-mounted LED lights to emit light energy onto a flexible photovoltaic panel that rotates with the drive shaft, converting it into electrical energy to continuously and wirelessly power a torsional vibration data acquisition module. Compared to battery power, this eliminates the need for downtime and battery replacement, supports millisecond-level continuous data transmission, and meets long-term online monitoring requirements. Compared to slip ring power, it avoids carbon brush wear and mechanical contact failures, eliminates the need for regular maintenance and calibration, and improves system reliability. Compared to electromagnetic induction power, it has no special requirements for rotational speed, provides stable power output under variable frequency speed control, and allows the LED light source to be fixed at a relatively distant location on the ground, eliminating the need to adjust the energy source distance when disassembling and assembling the drive shaft, making installation and maintenance more convenient and safer. It can be widely applied to rotating machinery in the power, steel, and shipbuilding industries, especially high-speed rotating shaft systems such as steam turbine generator sets, desulfurization circulating pumps, sintering machine main shafts, gas turbines, and fan compressors, where shutdown is inconvenient or power lines are difficult to lay out, providing support for predictive maintenance and smart factory construction. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Figure 1 This is an overall side view of the online monitoring system for torsional vibration of the rotating shaft according to the present invention; Figure 2 This is a cross-sectional view of the flexible photovoltaic panel installation and fixing according to the present invention; Figure 3 A cross-sectional view showing the installation and fixing of the voltage stabilization and high-speed data acquisition module of the present invention; Figure 4 This is an overall cross-sectional view of the online monitoring system for torsional vibration of the rotating shaft according to the present invention; Figure 5 This is a structural diagram of the magnetic positioning pin of the present invention; Figure 6 This is a schematic diagram of the system working principle of the present invention; Among them, 1. magnetic positioning pin, 2. flexible photovoltaic panel, 3. flexible photovoltaic panel fixing base, 4. strong magnet, 5. fixing and locking steel wire rope, 6. rotating shaft, 7. acquisition module fixing base, 8. regulated power supply and high-speed data acquisition module, 9. LED light, 10. strain gauge, 11. system power supply and wireless receiver box, 12. magnetic positioning pin self-locking buckle. Detailed Implementation

[0019] The following detailed description is exemplary and intended to provide further illustration of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0020] Where there is no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0021] In this embodiment of the invention, the data collection and processing are strictly in accordance with the requirements of relevant laws and regulations when applied in practice. All data acquisition in this embodiment is based on compliance with laws and regulations and user consent, and the data is used legally.

[0022] Example 1 To address the issues of frequent downtime for battery-powered systems requiring replacement and the inability to achieve continuous data transmission, this invention employs an LED-photovoltaic wireless power supply method. This method provides continuous power to the acquisition module on the rotating shaft, supports millisecond-level real-time data transmission, and eliminates the need for downtime maintenance. Furthermore, by using a non-contact power supply structure consisting of a ground-fixed LED light and a flexible photovoltaic panel that rotates with the shaft, direct contact between the external power supply and the rotating shaft is completely avoided. This solves problems such as carbon brush wear, contact failures, and complex installation and calibration associated with slip ring power supplies. Additionally, the LED light source can be fixed at a relatively distant location on the ground, causing no interference with the installation and removal of the rotating shaft. The power supply is unaffected by the rotational speed, making it particularly suitable for variable frequency speed control equipment. This solves the problems of electromagnetic induction power supply being affected by rotational speed, having limited power supply distance, and being inconvenient for variable frequency speed control applications. Moreover, the light-powered method does not have strict requirements on the distance between the light source and the photovoltaic panel, making installation more flexible and convenient.

[0023] Therefore, to address the issue that existing battery, slip ring, and electromagnetic induction power supply methods cannot provide continuous, maintenance-free, and speed-independent wireless power supply for high-speed rotating shafts (such as steam turbine generator sets, desulfurization circulating pumps, and sintering machine main shafts) during continuous operation, the inventive concept of this invention is to place the energy source (LED light) and the energy receiving and conversion unit (flexible photovoltaic panel) at the stationary end on the ground and the rotating end on the shaft, respectively. This replaces the traditional contact-based or speed-independent power supply schemes with a non-contact light energy transmission method, thereby completely solving the long-standing technical problems in high-speed rotating shaft torsional vibration monitoring, such as unreliable power supply, difficult maintenance, and poor speed adaptability. Furthermore, to address the risk of component detachment due to centrifugal force under high-speed rotation conditions, this invention also designs a triple anti-detachment fixing structure consisting of magnetic positioning, self-locking buckles, and wire rope locking, ensuring the long-term stable operation of the entire system from a physical fixation perspective.

[0024] In a typical embodiment of the present invention, such as Figure 1 As shown, the wireless optical power-driven torsional vibration data acquisition device for rotating shaft mainly includes: Rotating shaft 6 (the measured drive shaft); An LED light 9 is fixedly installed on the ground beside the rotating shaft; the light-emitting surface of the LED light faces the direction of the rotating shaft; the LED light is electrically connected to the fixed end transceiver power supply unit; The flexible photovoltaic panel 2 is mounted on the rotating shaft; the light-receiving surface of the flexible photovoltaic panel faces the direction of the LED light; the flexible photovoltaic panel is electrically connected to the torsional vibration data acquisition module (voltage stabilizing power supply and high-speed data acquisition module 8) fixed on the rotating shaft, and the torsional vibration data acquisition module is wirelessly connected to the fixed-end transceiver power supply unit.

[0025] In this embodiment, the fixed-end transceiver power supply unit is a system power supply and a wireless receiver box.

[0026] Additionally, it includes a strain gauge 10 attached to the surface of the rotating shaft, and the strain gauge 10 is electrically connected to the torsional vibration data acquisition module; the strain gauge is used to sense the micro-strain generated by the torsional deformation of the rotating shaft and convert it into an electrical signal output.

[0027] Meanwhile, the LED light, system power supply, and wireless receiver box are mounted on the side of the measured drive shaft on the ground, while strain gauges are mounted on the surface of the measured drive shaft. Furthermore, fixing the LED light and receiver box to the ground, rather than to the shaft, is one of the key design features of this invention. If the LED light were also mounted on the rotating shaft, the power supply would still need to be transmitted to the rotating components in some way, which would bring us back to the issues of slip rings or electromagnetic induction. Therefore, this invention fixes the LED light independently of the shaft to the ground, so that the energy source itself does not need to rotate with the shaft, thus fundamentally avoiding a series of problems such as rotational seals, brush wear, and the influence of rotational speed on the induction. The ground-fixed LED light can be easily connected to industrial field power supplies, the installation position can be flexibly adjusted according to the site space, and maintenance does not require contact with rotating components, significantly improving safety. Strain gauges mounted on the shaft surface directly sense the micro-strain generated by torsional vibration, which is the most direct and mature method for torsional vibration detection, ensuring the accuracy and reliability of the measurement data.

[0028] Furthermore, traditional photovoltaic panels typically employ rigid glass or metal backsheet structures, suitable for planar installation environments. However, the application of this invention is on cylindrical drive shaft surfaces. Simply attaching a rigid photovoltaic panel directly to the shaft surface presents two serious problems: First, the rigid panel cannot be bent and can only adhere to the shaft surface through line or point contact, resulting in a small and uneven contact area. This not only leads to insecure fixation but also makes it prone to impacts or breakage during vibration. Second, even if a proper fit is achieved, significant bending stress will be generated within the photovoltaic panel, potentially causing microcracks or even failure of the photovoltaic cells after long-term operation. To resolve this contradiction, this invention creatively employs a solution combining a flexible photovoltaic panel with a fabric-based flexible base.

[0029] like Figure 2As shown, the flexible photovoltaic panel 2 is fixed on the flexible photovoltaic panel fixing base 3. The flexible photovoltaic panel fixing base is made of a flexible fabric material and is fixed to the flexible photovoltaic panel 2 by high-strength adhesive. The flexible photovoltaic panel fixing base 3 is installed on the transmission shaft to be measured by magnetic positioning pin 1. The flexible fabric material can be one or more composite materials selected from: flexible fiber cloth, polyimide film, polyester film, silicone cloth, and aramid fabric.

[0030] The flexible photovoltaic panel itself uses thin-film photovoltaic materials, which are flexible, lightweight, and have good vibration resistance. It is bonded to a fabric base, also made of flexible material, using high-strength adhesive to form a composite structure that is both flexible and sufficiently tough. When this composite structure is installed on the surface of the drive shaft using magnetic positioning pins, the base and the photovoltaic panel naturally conform to the curvature of the shaft, achieving a large-area close contact. This close contact offers several advantages: firstly, it distributes stress evenly, preventing localized stress concentration and reducing the risk of damage to the photovoltaic panel; secondly, it prevents hollow areas or abnormal noises due to vibration after installation; and finally, the light-receiving surface of the photovoltaic panel maintains a relatively stable orientation, which is beneficial for receiving light energy from LED lights. If this flexible contact design were abandoned in favor of a rigid bracket for suspended installation, wind resistance and weight would increase, generating significant centrifugal force and air resistance during high-speed rotation, thus posing a safety hazard. Therefore, the flexible contact structure of this invention not only solves the problem of "whether it can be installed," but more importantly, it solves the problem of "stable installation and long-term use."

[0031] In addition, the regulated power supply and high-speed data acquisition module are the core electronic components of the entire device, containing precision components such as voltage regulation circuits, microprocessors, and wireless communication modules. These components have high requirements for mechanical stability during operation; even slight displacement or vibration of the circuit board during high-speed rotation may lead to fatigue fracture of solder joints, loosening of connectors, or signal interference. Unlike flexible photovoltaic panels, this module itself does not have the ability to deform flexibly and is not suitable for installation on a flexible base. Therefore, this invention specifically designs a rigid metal base for fixing the acquisition module.

[0032] like Figure 3 As shown, the regulated power supply and high-speed data acquisition module 8 are fixed on the acquisition module mounting base 7. The acquisition module mounting base 7 is made of rigid metal material, such as, but not limited to, aluminum alloy, stainless steel, carbon steel or copper alloy. It is fixedly connected to the regulated power supply and high-speed data acquisition module 8 by bolts. The acquisition module mounting base 7 is installed on the measured transmission shaft by magnetic positioning pin 1.

[0033] The rigid base has the following advantages: First, after being rigidly connected to the data acquisition module with bolts, the two form an integral rigid unit. Even at speeds of thousands of revolutions per minute, the circuit boards and components inside the module will not move relative to each other, ensuring electrical reliability during long-term operation. Second, the strength and stiffness of the rigid base are much higher than those of flexible materials, which can effectively support the weight of the data acquisition module and resist centrifugal force, preventing the module from shifting or flying out during high-speed rotation. Third, the metal base itself can also play a certain role in heat dissipation, helping to conduct heat from inside the module to the axial surface and improving the thermal environment.

[0034] It is important to note that even with a rigid base, the connection to the drive shaft is achieved via magnetic locating pins, rather than direct welding or bolts penetrating the shaft wall. This is because drive shafts in industrial settings are often core components of equipment, and any drilling or welding could alter the shaft's dynamic balance or even introduce crack sources, which is strictly prohibited in engineering. This invention employs an external fixing scheme using magnetic locating pins, completely avoiding this risk while retaining the convenience of quick assembly and disassembly. For users, initial installation can be completed within minutes, and subsequent maintenance can be easily performed without the need for specialized tools or calibration.

[0035] Since the device of this invention needs to be installed on a high-speed rotating drive shaft for extended periods, the method of fixing each component directly determines the reliable operation of the system. While traditional screws, clamps, or clips can lock the fasteners in a static state, under high-speed rotation conditions of hundreds or even thousands of revolutions per minute, centrifugal force can subject the fasteners to extreme alternating loads, easily leading to loose threads, clamp displacement, and other problems. This can cause the photovoltaic panel or data acquisition module to shift or even fly off, resulting not only in monitoring interruption but also potential equipment damage or safety accidents. To solve this practical engineering problem, this invention uses magnetic positioning pins as the basic fixing element.

[0036] like Figure 4 As shown, the light-receiving surface of the flexible photovoltaic panel is continuously arranged along the circumference of the rotation axis and faces the LED light. The LED light is electrically connected to the system power supply and the wireless receiver box 11. The flexible photovoltaic panel 2, the flexible photovoltaic panel fixing base 3, the voltage regulator, the high-speed data acquisition module, and the acquisition module fixing base are all fixed to the measured transmission shaft by magnetic positioning pins.

[0037] Since the magnetic locating pin is the core link connecting the components on the shaft and the drive shaft, its structural design directly affects the stability and reliability of the entire system. Therefore, this invention integrates a triple anti-detachment mechanism into the magnetic locating pin, corresponding to different stress scenarios and safety redundancy levels.

[0038] like Figure 5As shown, the bottom of the magnetic positioning pin 1 (the bottom refers to the end of the magnetic positioning pin facing the surface of the rotating shaft) has a built-in strong magnet 4, which initially attracts and fixes the positioning pin to the surface of the rotating shaft through magnetic attraction, achieving rapid positioning and tool-free installation. Its neck, that is, the reduced diameter or slotted part of the middle of the magnetic positioning pin (between the bottom and top), is provided with a self-locking buckle 12. When the flexible photovoltaic panel fixing base or the acquisition module fixing base is fitted into the positioning pin, the self-locking buckle automatically locks the base, used to fix the flexible photovoltaic panel fixing base 3 and the acquisition module fixing base, preventing the base from slipping axially or circumferentially under centrifugal force. Its top, that is, the end of the magnetic positioning pin away from the surface of the rotating shaft, is provided with a through hole for installing a fixing and locking steel wire rope 5, through which the annular locking steel wire rope passes, connecting all the positioning pins in series and binding them around the rotating shaft, providing ultimate anti-scattering protection. The bottom, neck, and top are distributed sequentially along the axial direction of the positioning pin, forming different levels of a triple anti-detachment mechanism, complementing each other and reinforcing each other step by step.

[0039] The first layer of protection is magnetic positioning: a strong magnet at the bottom attracts the positioning pin to the shaft surface, achieving quick positioning and initial fixation. The biggest advantages of magnetic positioning are its ease of operation, lack of damage to the shaft, and ability to be repeatedly disassembled and reassembled. If adhesive or clamps were used instead of magnetic positioning, they would either be unable to withstand centrifugal force or be extremely complicated to install and disassemble. Therefore, magnetic positioning is the first line of defense in this invention, ensuring installation efficiency and basic fixing force.

[0040] The second layer of protection is the self-locking latch: a self-locking latch is designed at the neck of the magnetic positioning pin to secure the flexible photovoltaic panel mounting base and the data acquisition module mounting base. It should be noted that the magnetic positioning pin only achieves adhesion to the axial surface; if the photovoltaic panel base and the data acquisition module base are simply sleeved with the positioning pin, they may still slip axially or circumferentially under centrifugal force. The self-locking latch locks the base and the positioning pin in place, preventing relative movement between them. This is a mechanical self-locking structure. When the base is sleeved onto the positioning pin, the latch automatically springs up or engages in the groove, forming a reliable locking state. Unlocking requires manual pressing of a specific area. Without this self-locking latch, the base cannot withstand the centrifugal force generated by high-speed rotation due to gravity or friction alone, inevitably leading to loosening. Therefore, the self-locking latch is the second line of defense in this invention.

[0041] The third layer is the steel wire rope locking: a through hole is made at the top of the magnetic locating pin, and a fixing steel wire rope is used to connect all the locating pins in series and wrap around and bind them to the shaft surface. The necessity of this design is that even if the first two layers fail due to some extreme reason (such as magnet demagnetization or buckle wear), the steel wire rope, as a physical constraint, can still firmly bind all components to the shaft, preventing them from flying off and causing secondary accidents. At the same time, the annular locking of the steel wire rope also generates a radial pressure, further increasing the friction between the magnetic locating pin and the shaft surface, thus improving the overall vibration and impact resistance of the system.

[0042] It is particularly important to emphasize that the magnetic positioning pins are equipped with strong magnets at their bottom, enabling them to quickly and magnetically adhere to the steel surface of the drive shaft for initial positioning. The biggest advantage of this magnetic method is that it eliminates the need for drilling or welding on the drive shaft, preserving its structure. Initial fixation can be completed on-site without any electric or pneumatic tools, significantly reducing installation difficulty and time costs. Furthermore, magnetic positioning allows for repeated disassembly and reassembly; when the equipment needs maintenance or replacement, it can be simply pulled out without complex disassembly procedures, a feature unmatched by traditional screw or welding fixation. To prevent detachment during high-speed rotation, each magnetic positioning pin is further secured with a locking steel wire rope. It is crucial to note that while the strong magnets provide initial attraction, under extreme speeds or severe impacts and vibrations, the magnetic attraction alone may still pose a risk of detachment. Without the added steel wire rope locking, if a single magnetic positioning pin detaches due to centrifugal force or vibration, the entire photovoltaic panel or data acquisition module will lose its fixation, leading to serious consequences. Therefore, this invention adds a steel wire rope ring locking mechanism as a reinforcement measure to the magnetic positioning: all magnetic positioning pins are connected in series with steel wire ropes and wrapped around the shaft surface to form a complete closed loop. Even if the magnetic force of a certain magnetic positioning pin weakens due to long-term use or external impact, the physical constraint of the steel wire ropes can still ensure that all components are firmly fixed to the shaft surface. This design significantly improves the reliability and safety of the system during major overhaul cycles.

[0043] As can be seen, this invention solves the problems of power interruption and insufficient data acquisition reliability in high-speed rotating shaft torsional vibration monitoring by the coordinated use of LED light power supply, flexible photovoltaic panel, triple anti-detachment fixation and wireless data transmission. Specifically, the ground-mounted LED lights and the rotating flexible photovoltaic panels form a non-contact light power supply link, providing continuous and rotation-independent power to the on-axis acquisition module, thus replacing the defective power supply methods such as batteries, slip rings, and electromagnetic induction from the source. Simultaneously, a triple anti-detachment structure consisting of magnetic positioning pins, self-locking buckles, and steel wire ropes reliably fixes the flexible photovoltaic panel and acquisition module to the high-speed rotating shaft surface, resisting the risk of loosening caused by centrifugal force and ensuring the physical stability of the light power supply link during dynamic operation. After the acquisition module receives stable power, it wirelessly transmits the torsional vibration signal sensed by the strain gauges to the ground receiver, avoiding the problem of signal cable entanglement. Together, they achieve long-term, maintenance-free, and continuous online monitoring of torsional vibration of the high-speed rotating shaft. Furthermore, it provides a continuous, maintenance-free, rotation-independent, and easy-to-install wireless power supply solution for the torsional vibration data acquisition module on the high-speed rotating shaft, which can be widely used in the online monitoring of key rotating equipment such as steam turbine generator sets, desulfurization circulating pumps, sintering machine main shafts, gas turbines, and fan compressors in the power, steel, and shipbuilding industries.

[0044] Example 2 In a typical embodiment of the present invention, a method for operating an LED-photovoltaic power torsional vibration data acquisition device is provided, comprising the following steps: The LED lights are powered by an external power supply through an LED rectifier module, and the LED lights emit light energy in the direction of the rotation axis. The light energy is received by a flexible photovoltaic panel mounted on a rotating shaft and converted into electrical energy, which is then used to power the high-speed digital acquisition module via a power supply voltage regulator module. Torsional vibration signals are detected using strain gauges on the surface of a rotating shaft and transmitted to a high-speed digital acquisition module; The high-speed digital acquisition module processes the torsional vibration signal and then transmits it wirelessly to the wireless receiving module, which in turn sends it to the host computer.

[0045] like Figure 6As shown, during operation, the system power supply and wireless receiver box power the LED lights to emit light energy, while the flexible photovoltaic panel generates power to the regulated power supply and high-speed data acquisition module. The micro-strain electrical signals measured by the strain gauges are sent to the regulated power supply and high-speed data acquisition module, which then wirelessly transmit the data to the system power supply and wireless receiver box. The system power supply and wireless receiver box further transmit the data to the analysis host computer. This working method achieves non-contact and energy self-sufficiency in rotating shaft torsional vibration monitoring. Power is supplied by emitting light energy from a fixed ground end to the flexible photovoltaic panel on the rotating shaft, completely eliminating the mechanical friction of traditional slip rings and the lifespan limitations of batteries. It solves the problems of power interruption at high speeds and periodic shutdowns for maintenance. At the same time, since the power supply depends only on the light intensity and not the rotational speed, this method can adapt to operating conditions with drastic speed changes, such as variable frequency speed regulation, avoiding the risk of electromagnetic induction power supply failure at low speeds or during speed changes. Furthermore, the collected torsional vibration signals are directly transmitted wirelessly without the need for contact devices, fundamentally solving the reliability and anti-interference issues of rotation signal extraction and achieving truly maintenance-free continuous online monitoring.

[0046] Those skilled in the art will understand that the modules or steps of the present invention described above can be implemented using general-purpose computer devices. Optionally, they can be implemented using computer-executable program code, thereby allowing them to be stored in a storage device for execution by a computer device, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. The present invention is not limited to any particular combination of hardware and software.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0048] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A data acquisition device for LED-photovoltaic power torsional vibration, characterized in that, include: Rotation axis; An LED light is fixedly installed on the ground beside the rotating shaft; the light-emitting surface of the LED light faces the direction of the rotating shaft; the LED light is electrically connected to the fixed-end transceiver power supply unit; The flexible photovoltaic panel is mounted on the rotating shaft; the light-receiving surface of the flexible photovoltaic panel faces the direction of the LED light; the flexible photovoltaic panel is electrically connected to the torsional vibration data acquisition module fixed on the rotating shaft, and the torsional vibration data acquisition module is wirelessly connected to the fixed-end transceiver power supply unit.

2. The LED-photovoltaic power supply torsional vibration data acquisition device as described in claim 1, characterized in that, The light-receiving surface of the flexible photovoltaic panel is continuously arranged circumferentially along the rotation axis and faces the direction of the LED light.

3. The LED-photovoltaic power supply torsional vibration data acquisition device as described in claim 2, characterized in that, The flexible photovoltaic panel is fixed on the flexible photovoltaic panel fixing base.

4. The LED-photovoltaic power supply torsional vibration data acquisition device as described in claim 3, characterized in that, The flexible photovoltaic panel fixing base is made of a flexible fabric material and is fixed to the flexible photovoltaic panel by adhesive bonding.

5. The LED-photovoltaic power torsional vibration data acquisition device as described in claim 1, characterized in that, The torsional vibration data acquisition module is fixed on the acquisition module mounting base.

6. The LED-photovoltaic power supply torsional vibration data acquisition device as described in claim 5, characterized in that, The mounting base of the acquisition module is made of rigid metal material and is fixed to the torsional vibration data acquisition module by bolts.

7. The LED-photovoltaic power supply torsional vibration data acquisition device as described in claim 1, characterized in that, It also includes a magnetic positioning pin, which has a magnet at its bottom for magnetically positioning and fixing the flexible photovoltaic panel and torsional vibration data acquisition module onto the rotating shaft.

8. The LED-photovoltaic power supply torsional vibration data acquisition device as described in claim 7, characterized in that, The magnetic positioning pin has a self-locking buckle at its neck, which is used to lock the flexible photovoltaic panel fixing base and the torsional vibration data acquisition module fixing base onto the magnetic positioning pin.

9. The LED-photovoltaic power supply torsional vibration data acquisition device as described in claim 7, characterized in that, The magnetic positioning pin has a through hole at the top, and an annular locking steel wire rope is threaded through the through hole. The steel wire rope connects each magnetic positioning pin in series and locks it around the rotating shaft.

10. A method for operating an LED-photovoltaic power supply torsional vibration data acquisition device, characterized in that, Includes the following steps: The LED lights are powered by an external power supply through an LED rectifier module, and the LED lights emit light energy in the direction of the rotation axis. The flexible photovoltaic panel mounted on the rotating shaft receives the light energy and converts it into electrical energy to power the torsional vibration data acquisition module; the torsional vibration data acquisition module sends the data to the wireless receiving module, which then sends it to the host computer.

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