37 results about "Plastic optical fiber" patented technology

The invention provides a well drilling anti-interference communication system based on a VCSEL (Vertical Cavity Surface Emitting Laser), the VCSEL and a manufacturing method thereof, and the manufacturing method comprises the following steps: calculating the light field intensity distribution of a high-order transverse mode through an intrinsic mode expansion method and a Laguerre-Gaussian model based on the epitaxial structure parameters of a laser; determining a target area which begins to perform downward annular etching on the surface of the p-DBR layer, wherein the target area coincides with a light field intensity peak area of the high-order transverse mode; performing annular etching in the target area to form an annular groove, and etching at least seven pairs of p-DBR layers inwards in the groove; the communication system comprises a signal transmitting end arranged on the derrick side, and the signal transmitting end is provided with the vertical cavity surface emitting laser; the p-DBR region of the vertical cavity surface emitting laser is provided with an annular etching structure; the graded-index fluorinated plastic optical fiber is used as a transmission medium and is connected with the derrick side and the logging room side; and the optical signal receiving end is arranged at the logging room side and is used for receiving and converting the optical signal into an electric signal.

The invention discloses an optical interconnection system which comprises a light source, a transmission medium and a photoelectric detector. The light source adopts a micro resonant cavity light-emitting diode array, and the transmission medium adopts a multi-core plastic optical fiber. An optical signal output by the micro resonant cavity light emitting diode array is transmitted to the photoelectric detector through the multi-core plastic optical fiber and is converted into an electric signal through the photoelectric detector. The light source of the optical interconnection system provided by the embodiment of the invention adopts the micro resonant cavity light-emitting diode array, the transmission medium adopts the multi-core plastic optical fiber, and good balance among low power consumption, high stability and high parallelism can be achieved through component optimization.

The invention relates to the technical field of high-power microwave effect tests and testing, and particularly provides an automatic edge AI judgment method and device for an HPM damage grade, and the method comprises the steps: synchronously obtaining electric field, temperature and FBG reference data through a conformal optical fiber sensor array and a reference sensor in a test body; and the optical fibers are reinjected to the outside of the shielding cabin in a zero-metal manner in a lossless manner through a plastic optical fiber-CAN-FD link. Voxelization, multi-modal fusion and INT8 quantization processing are carried out on the data on an outboard edge computing device, and a standard input tensor is generated. And a damage grade judgment model deployed on the equipment is used for reasoning, and a damage grade judgment result and confidence are output. Optionally, the model may also output a thermodynamic diagram identifying the critical space region. According to the method, the AI model is locally deployed through the edge computing device, multi-dimensional sensing data are fused, real-time efficient judgment of the HPM damage level is achieved, and meanwhile the consistency and objectivity of the judgment result are remarkably improved.

The invention relates to an electric field visualization real-time monitoring system and method, belongs to the technical field of electric field visualization, and is used for solving the problems of insufficient real-time performance, large measurement interference, incomplete imaging, weak multi-user cooperation and lack of unified time reference in the prior art. The method comprises the following steps: acquiring electric field scattering data of a test body by a conformal optical fiber electric field sensor array, transmitting the electric field scattering data to an edge GPU node through a plastic optical fiber-CAN-FD link, and converting the electric field scattering data into electric field amplitude data; the edge GPU node is combined with WebGL3D texture mapping and a volume ray casting algorithm to complete volume rendering, and multi-user concurrent interaction is realized through a Web server and a browser client; and a White-Rabbit clock architecture is adopted to provide a unified time reference for the whole process. According to the method, dynamic and accurate capturing of the electric field is achieved, and the multi-user concurrent access requirement is effectively met.

The invention discloses an arc light online monitoring device for an energy storage power distribution switch cabinet, and belongs to the technical field of arc fault monitoring. Comprising a monitoring unit and a collecting unit, a quartz window short horn mouth captures 2pi spherical degree arc light at a time, and a closed plastic optical fiber sends a pulse into an integrating sphere within 50 microseconds; a black body extinction cylinder-narrow band filter-integrating sphere multi-stage attenuation is carried out, strong light is weakened firstly, then an ultraviolet characteristic spectrum is extracted, flash of a background lamp and a camera is completely eliminated, arc light position offset still keeps stable output, and high signal-to-noise ratio identification is realized; a real arc is judged according to the ratio of pure arc light to total light, and interference is avoided; after confirmation, a level in direct proportion to energy is output immediately, a background acts according to a three-level strategy of prompting, tripping and quick breaking, no optical cable is exposed in the whole process, the whole process is not influenced by dust condensate water, a closed loop from arcing to protection decision is completed within 2 ms, and real-time, reliable and maintenance-free arc light online monitoring is provided for an energy storage power distribution switch cabinet.

The invention relates to the field of cascade optical fiber sensing, in particular to an intelligent identity recognition access control system based on cascade optical fiber sensing and a recognition method of the intelligent identity recognition access control system. The access control system comprises a light source module, a plastic optical fiber module, a cascade optical fiber sensing module, a detection demodulation module, a signal processing module and an upper computer module; the light source module is used for generating a broadband light signal; the plastic optical fiber module is used for transmitting broadband optical signals generated by the light source module to the cascade optical fiber sensing module, the cascade optical fiber sensing module is arranged on the surface of the access control handle, and when a user makes contact with the cascade optical fiber sensing module, vibration, temperature and stress at the position where the user makes contact with the cascade optical fiber sensing module can be detected; the detection module is used for detecting a contact signal at a position corresponding to a hand contacted by a user during unlocking, converting the contact signal into an optical signal and transmitting the optical signal to the detection demodulation module; according to the invention, intelligent identity recognition can be realized, the detected data polarization state is stable and mutually independent, and the accuracy is high.

The endoscope illumination system comprises a reuse part and a disposable part which are connected with each other, the reuse part comprises at least one laser light source, a coupling device and a high-temperature-resistant light guide device, and the disposable part comprises at least one plastic optical fiber, an operation part and a light diffusion device; light emitted by the laser light source is coupled by the coupling device and enters the high-temperature-resistant light guide device; the high-temperature-resistant light guide device is connected with the plastic optical fiber, so that light is conducted to the plastic optical fiber from the high-temperature-resistant light guide device, and the biological tissue is illuminated through the light diffusion device. The endoscope illumination system is low in cost, stable, reliable, suitable for disposable endoscopes, good in imaging effect and capable of achieving various illumination schemes such as white light illumination and multispectral illumination, and the illumination effect is consistent with that of repeated endoscopes.

This invention relates to the field of plastic optical fiber weaving technology, specifically to plastic optical fiber weaving, weaving device, and weaving method for interior lighting of new energy vehicles. The invention includes: a machine base, and guide wheels rotatably mounted on the side wall of the machine base. Symmetrically distributed receiving plates are provided on the machine base, and guide holes are formed on the receiving plates. A translation component is disposed on the machine base, and symmetrically distributed connecting plates are connected to the translation component. A follow-up lifting mechanism is disposed on the connecting plates, and a clamping block is connected to the follow-up lifting mechanism. An alternating guide mechanism is provided within the clamping block. The follow-up lifting mechanism can control the clamping block to reciprocate vertically when the connecting plates move, and performs alternating locking actions on the clamping block through the alternating guide mechanism, thereby performing winding and weaving processing on the plastic optical fiber.

The invention discloses a plastic optical fiber noodle ironing machine, and relates to the technical field of plastic optical fibers, the plastic optical fiber noodle ironing machine comprises a base, the outer surface of the base is fixedly provided with a controller, the top of the base is fixedly connected with a square plate, and the side, close to the edge of the base, of the square plate is fixedly provided with a guide device; a placing plate is fixedly mounted on the other side of the upper surface of the square plate, a clamping device is fixedly mounted at the top of the square plate, a fixing column is fixedly connected to the top of the base, and a transverse plate is fixedly connected to the top of the fixing column. According to the plastic optical fiber surface ironing machine, a plastic optical fiber is guided to the position below the clamping device through the guiding device, the clamping device and the placing plate are matched to fix the plastic optical fiber, the plastic optical fibers of different specifications can be fixed by adjusting the height of the sliding column, and if the end face of the plastic optical fiber is uneven, the plastic optical fiber can be fixed. An uneven end face can be cut off through the cutting knife, and then the plastic optical fiber is subjected to surface ironing treatment through the ironing plate.

The invention relates to the technical field of vehicle-mounted atmosphere lamp program control systems, and discloses a plastic optical fiber action state adjusting method and system for a vehicle-mounted atmosphere lamp. On the basis of driver emotion analysis information, in combination with an AI algorithm and plastic optical fiber light-emitting action scene type information based on big data storage, scientific classification analysis of vehicle-mounted atmosphere lamp plastic optical fiber light-emitting action scene types is carried out, and self-adaptive matching of vehicle-mounted atmosphere lamp plastic optical fiber light-emitting action scenes based on driver emotion fluctuation is achieved; carrying out reliable real-time analysis on the plastic optical fiber light-emitting control instruction parameters of the atmosphere lamp according to the light-emitting action scene matching information of the plastic optical fiber in the vehicle and by combining an intelligent search algorithm and the scientific plastic optical fiber light-emitting control instruction parameters; the vehicle-mounted atmosphere lamp plastic optical fiber light-emitting control instruction is safely and efficiently planned based on the emotion fluctuation of the driver, and the humanization and intelligence of the light-emitting effect control of the vehicle-mounted atmosphere lamp are improved.

The embodiment of the present application relates to the technical field of plastic optical fiber, and particularly relates to a layered co-extrusion die for manufacturing polymer optical fiber and a production device. In the embodiment of the present application, the die body comprises a plurality of annular components arranged in sequence and spaced apart from each other from inside to outside, and a flow channel of polymer melt is arranged between two adjacent annular components. In the plurality of annular components, a plurality of hollow columns extending along the axial direction of the annular component are further arranged between at least two adjacent annular components, and the hollow columns are distributed at intervals. In the process of preparing an optical fiber preform by using the die, the side wall of the hollow column is used to prevent the polymer melt from flowing into the inner cavity of the hollow column, so as to form the preform cavity. The die provided in the embodiment of the present application can be used to realize the industrial production of the optical fiber preform of the annular cavity polymer optical fiber by using the layered co-extrusion process, and the optical fiber preform is drawn in the subsequent process, so as to realize the industrial production of the annular cavity polymer optical fiber.

The application provides a kind of equal-length cutting device for plastic optical fiber production, belongs to the technical field of optical fiber processing equipment, including cutting mechanism and optical fiber conveying mechanism.Cutting mechanism is provided with driving assembly, transmission shaft, turntable and circumferential array cutting blade;Optical fiber conveying mechanism is provided with guide frame, directional wheel, guide cylinder, pressure roller, driving wheel, toggle block and extension spring, and the cutting power is transmitted to the driving wheel through the transmission rod, bevel gear pair, driving dial and four-groove gear in the transmission assembly, so that it does intermittent rotation.The application solves the technical problems of low automation, inability to continuous fixed-length cutting, poor consistency in length, and complex structure and high cost caused by dependence on electronic control system, realizes automatic intermittent feeding and continuous cutting of optical fiber under pure mechanical linkage, the optical fiber is stationary during cutting, accurate in fixed length, and easy to operate.

The application discloses a micro-crack optical waveguide carrying integration process of a distributed photonic synapse operation unit, which sequentially comprises three procedures of visual high-precision alignment, dynamic weight matching and sealing stress release, and is matched with a quartz-plastic optical fiber composite transition connection structure through micron-level visual positioning, real-time optical path feedback adjustment and gradient temperature curing, so that the influence of assembly stress on the micro-crack optical path is reduced while the assembly precision is ensured, and the finished product yield and operation stability are greatly improved.

This invention relates to an endoscope and its illumination system. The illumination system includes a light source module and a disposable or reusable endoscope body selectively and detachably coupled to the light source module. The light source module includes a laser light source. The disposable endoscope body includes a plastic optical fiber, allowing light emitted from the laser light source to be coupled to the plastic optical fiber for endoscope illumination. The reusable endoscope body includes a multiplexed optical fiber, allowing light emitted from the laser light source to be coupled to the multiplexed optical fiber for endoscope illumination. In the above-mentioned endoscope illumination system, the laser light source ensures illumination brightness. During use, the light source module can be placed in a main unit housing or a light source housing. By selectively coupling with either the disposable or reusable endoscope body, a single main unit can be adapted to both disposable and reusable endoscope bodies. This eliminates the need for hospitals to separately equip main units for disposable and reusable endoscope bodies, reducing the types of main unit equipment and simplifying management processes.

The utility model belongs to the technical field of baking devices, and particularly relates to a plastic optical fiber box baking device which comprises a base. The resistance wire heater is arranged in the center of the top of the base; the mounting frame is placed on the top of the base through two stabilizing sleeves, and the resistance wire heater is located in the center of the mounting frame; the multiple clamping structures are arranged on the mounting frame in an annular array mode, and each clamping structure is used for clamping an optical fiber box; and the driving mechanism is arranged in the base and used for driving the clamping structures to rotate, and the problem that in the existing plastic optical fiber box baking process, the plastic optical fiber box needs to be manually turned over many times to achieve the expected baking effect, and the baking efficiency is low is solved.

To provide a hybrid cable capable of suppressing optical loss of a plastic optical fiber.SOLUTION: A hybrid cable 1 includes a sheath 5, a plastic optical fiber 21, and a power supply line 4. The method for manufacturing the hybrid cable 1 includes an assembling step, a coating step, and an annealing step. In the assembling step, the plastic optical fibers 21 and the power supply wires 4 are assembled to obtain the twisted wire cable 10. In the covering step, the stranded cable 10 is covered with a sheath 5 to obtain an unannealed hybrid cable 11. In the annealing step, the unannealed hybrid cable 11 is annealed. The tensile force Gc (g) applied to the optical cable 2 in the assembling step is equal to or less than 900gf. The tension Gc (g) applied to the optical cable 2 and the heating temperature T (°C) in the annealing step satisfy the following formula (1): Gc (g) ≤ -24T (°C.) + 2900 (1) SELECTED DRAWING: Figure 1

The application provides a surgical lighting system's light splitting fiber, relates to the medical lighting technical field, and relates to a light emitting assembly, a fiber body, the light emitting assembly is used to generate a straight light beam, the first end of the fiber body is dispersed into a plurality of fiber bodies, the outer side of the fiber body is provided with a protective sleeve, the end of the fiber body is provided with a transparent cladding end, and the second end of the fiber body is fixedly provided with a connector assembly.The application adopts the light emitting assembly and the fiber body to form a medical lighting system, the fiber body is a single plastic fiber, the light emitting assembly generates a straight light beam, the light beam is conducted to the other end along the fiber body, the use demand of medical lighting can be met, the cost of the single plastic fiber is relatively low, the single plastic fiber is not prone to breaking during bending adjustment, and the comprehensive benefits brought by specific application are high.

This invention discloses a transceiver node identification and link rate configuration method for a plastic fiber optic multi-node bus, comprising: extracting the first threshold crossing time, pulse peak amplitude attenuation, and first echo arrival interval from training pulses to form a node response feature group, thereby improving the distinguishability of the physical response of multiple nodes; generating a node identification tag sequence through a hierarchical index matrix and unique landing points, thereby improving the node sorting stability; dividing rate groups by hierarchical intervals and determining the target link rate within a group by combining the number of error codes and the location of error code distribution, thereby reducing the constraint of low-quality nodes on the overall line rate; and suppressing node drift and misconfigured rates through confirmation pulse verification, tag rearrangement, and rate resetting after rate switching, thereby improving the identification accuracy and link transmission stability of the plastic fiber optic multi-node bus.

A pipe segment for use in construction of a pipeline comprising a pipe body and a sensing nerve network that is embedded in or coupled to the pipe body and is configured to monitor a condition of the pipe segment in real-time. The sensing nerve network comprises plastic optical fiber (POF) nerves and a nanomaterial coating covering a span of the plastic optical fiber nerves, the coating having an approximately constant diameter and the nanomaterial having a property that changes in the presence of a targeted gas, enabling detection of the targeted gas along the length of the optical fiber nerves.

The utility model discloses a kind of pull-taper technology of ceramic heating PMMA plastic optical fiber, including prefabrication tool base;No. The sliding module of stepper motor is fixedly installed on the top surface of prefabrication tool base, the surface of no. The sliding module of stepper motor is fixedly connected in no. In the above scheme, when pull-taper, the surface of no. Module sliding platform set in no. Stepper motor sliding module is operated to specified position upwards, to drive no. Stepper motor sliding module synchronous movement is to the D-shaped ceramic heating head of the surface of no. Module sliding platform set is operated to specified height position, so it is realized to use fixed material to carry out the pull-taper of plastic optical fiber, can be under the premise of guaranteeing the optical performance of optical fiber, optical fiber is drawn to target size, and by adjusting corresponding parameter, according to the original diameter of plastic pull-taper, adjust corresponding parameter, i.

The lighted surgical access system is provided that includes a circumferential retractor and a plastic optical fiber (POF) attached thereto. The circumferential retractor retracts and protects a patient's body opening while the POF illuminates the internal surgical site, body cavity and / or body opening.

The application discloses an underwater optical wireless communication and lighting system based on plastic optical fiber and quantum dot color conversion, relates to the technical field of underwater optical wireless communication and solid-state lighting, and comprises a laser diode, a coupling lens, a plastic optical fiber, a sealed glass cavity, a convex lens and a water tank. Compared with the scheme in the prior art that must use three independent lasers of red, green and blue and performs wavelength division multiplexing, the system only needs one laser, does not need an underwater wavelength division multiplexing device, and does not need a multi-channel driving circuit, so that the optical structure of an underwater node is simplified from an active multi-light source system to a passive single optical fiber plus a micro-cavity structure, and the reliability hidden danger of underwater electrical connection is eliminated from the system architecture level.

This invention relates to the field of high-power microwave effect testing and measurement technology, specifically providing an edge AI-based automatic determination method and apparatus for HPM damage levels. The method includes: synchronously acquiring electric field, temperature, and FBG reference data through a conformal fiber optic sensor array and a reference sensor inside the test chamber, and then losslessly reinjecting this data to the outside of the shielded chamber via a plastic fiber-CAN-FD link in a zero-metal manner. On an edge computing device outside the chamber, the data undergoes voxelization, multimodal fusion, and INT8 quantization to generate a standard input tensor. The damage level determination model deployed on this device performs inference, outputting the damage level determination result and confidence level. Optionally, the model can also output a heat map identifying key spatial areas. This invention achieves real-time and efficient determination of HPM damage levels by locally deploying an AI model on an edge computing device and fusing multi-dimensional sensor data, while significantly improving the consistency and objectivity of the determination results.

The invention relates to a plastic optical fiber cutting system which comprises a pay-off device, a wire passing device and a cutting device, the pay-off device comprises a mounting seat, a wire roller and a driving device, the wire roller and the driving device are mounted on the mounting seat, and the driving device is connected to the wire roller; a first photoelectric sensor and a second photoelectric sensor are mounted on the mounting seat, the first photoelectric sensor is positioned below the wire roller, the second photoelectric sensor is positioned at the lower end of the mounting seat, and the first photoelectric sensor and the second photoelectric sensor are in signal connection with the driving device. The photoelectric sensor is arranged on the pay-off device, after the sensor below the wire roller senses an optical fiber, the wire roller automatically accelerates to pull the optical fiber for cutting, when a roll of optical fiber rotates to the last circle, the end falls to the bottom of the mounting seat, and after the sensor at the lower part senses, the wire roller automatically stops, so that the on-off automation of the pay-off device is realized, the manpower is saved, and the efficiency is improved.

An information handling system may include an optical bus system for managing nodes. The optical bus system may include a plastic optical fiber configured to transmit light signals between the nodes. The plastic optical fiber includes a plurality of molded notches positioned at predetermined intervals along a length of the plastic optical fiber. Each of the plurality of molded notches is configured to allow light ingress into and light egress from the plastic optical fiber for multi-node communication.

The utility model discloses a kind of plastic optical fiber assembly devices, belong to plastic optical fiber assembly technical field, including fixed platform, assembly box and cleaning component;The cleaning component includes fixed ring, cleaning ring, cleaning brush and driving part;Assembly box is opened in assembly groove;Polymer coating is placed in the assembly groove;One end of the assembly box is opened with the inlet slot of the assembly groove communication;Optical fiber sequentially passes through fixed ring, the cleaning brush of cleaning ring and inlet slot, enters assembly groove and completes the assembly with polymer coating, in the assembly process of optical fiber, by driving part can drive cleaning ring coaxial rotation, to make cleaning brush dynamic cleaning dust and other impurities adhered on optical fiber, compared with prior art, this dynamic cleaning mode reduces the generation of cleaning dead angle, can improve cleaning effect.

The invention relates to an endoscope and an illuminating system thereof, the illuminating system of the endoscope comprises a light source module and a disposable endoscope body, the light source module comprises a laser light source, the disposable endoscope body comprises a plastic optical fiber coupled with the light source module, light emitted by the laser light source is coupled to the plastic optical fiber for illumination, and the plastic optical fiber can be disconnected from the light source module. According to the illuminating system of the endoscope, the light source module can be placed in the mainframe box or the light source box and connected with the disposable endoscope body, the disposable endoscope body can be disconnected from the light source module, and therefore disposable use is achieved. The light source module adopts the laser light source with higher brightness than the LED light source, so that the illumination brightness of the endoscope illumination system is ensured, and the imaging quality of the endoscope is further improved. The price of the plastic optical fibers is much lower than that of quartz or glass optical fibers and optical fiber bundles, little heat is generated when the plastic optical fibers conduct light rays emitted by the laser light source, and the use cost of the disposable endoscope is reduced while the biological safety is guaranteed.

The utility model discloses a kind of PMMA plastic optical fiber tapering technology, including vertical guide rail mechanism, horizontal guide rail mechanism, heater, the surface of the back side of the middle part of horizontal guide rail mechanism is fixedly installed with the surface of vertical guide rail mechanism, the outer surface of horizontal guide rail mechanism movably installs left optical fiber clamp, right optical fiber clamp, left optical fiber clamp and right optical fiber clamp are symmetrically arranged, the upper surface of heater top is fixedly installed with heating groove, heating groove is electrically connected with heater, the inside of heating groove is provided with heat conducting oil;By setting vertical guide rail mechanism, horizontal guide rail mechanism and other structures, plastic optical fiber is fixed on the horizontal guide rail mechanism that can move at uniform speed axially, make optical fiber keep straight state, then by vertical guide rail mechanism control horizontal guide rail mechanism and left optical fiber clamp, right optical fiber clamp and the plastic optical fiber of two bottom ends fixed thereon on it move downwards, until immerse in heating liquid, utilize the movement of two clamps relatively far away, to realize the tapering of plastic optical fiber.

The invention discloses an extrusion device for plastic optical fiber production and processing, the extrusion device comprises a screw extruder, the screw extruder comprises a base and a shell, the top of the shell is provided with a pretreatment box, the pretreatment box is internally provided with a linkage mechanism, the top surface of the base is provided with a mold, and the mold is provided with a screw rod; three pretreatment steps of mixing, filtering and drying, which are crucial to the quality of optical fibers, are integrated in a continuous process in an extrusion device, and before raw materials enter a main machine of an extruder, color changing, impurity removing and drying are completed; only materials meeting the standard can enter the extrusion stage, the generation probability of bubbles, impurities, uneven colors and other defects is greatly reduced from the source, the optical performance and the yield of products are directly improved, the scraper is linked to clean the filter screen while opening and closing of the barrier plate are controlled through the lifting part, and it is ensured that the filter screen is not damaged before each time of discharging. The filter screen is in a clean state, so that the automatic process of cleaning once the bin is opened is realized, and regular manual shutdown for cleaning is not needed.