Positioning method and system for double-layer optical fiber heterogeneous communication hybrid topology networking

Abstract

The invention provides a positioning method and system for a double-layer optical fiber heterogeneous communication hybrid topology networking, and relates to the technical field of communication, and the scheme is as follows: constructing a double-layer optical fiber multi-node communication architecture to carry out heterogeneous network convergence to obtain a double-layer optical fiber heterogeneous communication positioning network, and optimizing a network channel; constructing a micro-nano device and constructing a multi-signal cooperative communication positioning model based on an ultra wide band and an orthogonal frequency division multiplexing communication technology; optimizing a network architecture of a multi-signal cooperative communication positioning model based on a star-ring topological structure; performing dynamic polling on the double-layer optical fiber heterogeneous communication positioning network based on the optimized model to obtain node real-time information; and estimating and positioning the node real-time information by combining a circumference positioning method and a time difference of arrival positioning method, and obtaining and outputting a double-layer optical fiber heterogeneous communication networking positioning report. The invention aims to improve the common multi-path effect and signal attenuation problems in the underground roadway environment and realize high-precision positioning of the target position.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a positioning method and system for double-layer optical fiber heterogeneous communication hybrid topology networking. Background Art

[0002] OFDM (Orthogonal Frequency Division Multiplexing) is a multi-carrier modulation technology that converts high-speed data signals into parallel low-speed sub-data streams by dividing the channel into several orthogonal sub-channels and modulates them for transmission on each sub-channel; In recent years, more and more underground pipelines are under construction or have been put into operation. There are many obstacles in these underground pipeline corridors and other environments, such as complex geological conditions, strict space restrictions, and limited electromagnetic wave propagation. In addition, in electromagnetic shielding spaces such as underground pipeline corridors, there are serious multipath effects and signal attenuation problems, which leads to poor performance of traditional communication technologies in these scenarios.

[0003] Therefore, it is urgent to develop a solution to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a positioning method and system for a double-layer optical fiber heterogeneous communication hybrid topology network, aiming to improve the common multipath effect and signal attenuation problems in underground tunnel environments and to perform high-precision positioning of the target position.

[0005] The present invention provides a positioning method and system for a double-layer optical fiber heterogeneous communication hybrid topology network, which adopts the following technical solutions: In a first aspect, a positioning method for a dual-layer optical fiber heterogeneous communication hybrid topology network specifically includes: A double-layer optical fiber multi-node communication architecture is constructed to integrate heterogeneous networks to obtain a double-layer optical fiber heterogeneous communication positioning network, and modulation and demodulation technology combined with data compression algorithm are used to optimize network channels; Wherein, the double-layer optical fiber heterogeneous communication positioning network includes a polarization-maintaining optical fiber distributed sensing network and an optical fiber grating discrete sensing network; Construct a micro-nano device including a photoelectric conversion unit, a power management unit, and an energy storage unit, and construct a multi-signal cooperative communication positioning model based on ultra-wideband and orthogonal frequency division multiplexing communication technology combined with the micro-nano device; The star-ring topology is obtained by mixing the star topology and the ring topology, and the network architecture of the multi-signal cooperative communication positioning model is optimized based on the star-ring topology. Based on the optimized multi-signal cooperative communication positioning model, the double-layer optical fiber heterogeneous communication positioning network is dynamically polled to obtain the real-time information of nodes. During the polling period, the polling order is dynamically adjusted according to the real-time location and status of the network nodes. The circular positioning method and the arrival time difference positioning method are combined to estimate and locate the real-time information of the node, and a double-layer optical fiber heterogeneous communication network positioning report is obtained and output.

[0006] The beneficial effects of the positioning method of a double-layer optical fiber heterogeneous communication hybrid topology network provided by the present invention are: First, after in-depth research on the characteristics of ultra-wideband (UWB) and orthogonal frequency division multiplexing (OFDM) communication signals, the high bandwidth characteristics of UWB and the spectrum utilization efficiency of OFDM are cleverly integrated to create a multi-signal cooperative communication positioning system, which will not only provide a wider signal spectrum, but also effectively overcome the multipath effect and signal attenuation commonly found in underground tunnel environments; Secondly, modulation and demodulation technology combined with data compression algorithms are used to optimize network channels to ensure that nodes can exchange information quickly and reliably in complex underground environments. Through the polling mechanism, the system can obtain the node status, positioning data and other key information in real time, thereby achieving coordinated control and optimization of the entire system. This will provide stronger support and more reliable communication infrastructure for various application scenarios, such as smart cities and industrial automation.

[0007] Optionally, the process of constructing a micro-nano device including a photoelectric conversion unit, a power management unit, and an energy storage unit includes: The photoelectric conversion unit, the power management unit, and the energy storage unit are connected in sequence. The photoelectric conversion unit converts the light energy received from the optical fiber transmission into electrical energy through the photoelectric conversion unit, and outputs the electrical energy after maximum power point tracking through the power management unit, and charges the energy storage unit. It actually converts electrical energy into chemical energy for storage, and then converts the stored chemical energy into electrical energy for electrical energy output through the energy storage unit.

[0008] Optionally, a photoelectric conversion unit is used to receive the light energy of the optical fiber-transmitted laser and convert the light energy into electrical energy to transmit to the power management unit. Its material is indium gallium arsenide ternary compound semiconductor, and a multi-junction connected battery structure is designed to absorb multi-layer photon energy and increase the photoelectric conversion efficiency. The power management unit is used to receive the electric energy converted by the photoelectric conversion unit and perform energy management to convert the electric energy into chemical energy, store it in the energy storage unit, use analog circuits to build a power tracking circuit, track the voltage at the maximum power output point of the photoelectric conversion part, so that the photoelectric conversion unit can continuously output the maximum power, and control the switch of the boost circuit based on the switch tube with constant conduction control; Wherein, the switch tube of the constant conduction control is composed of a pulse timing unit and a comparator; The energy storage unit is used to discharge the chemical energy in the energy storage capacitor and convert it into electrical energy. The energy storage capacitor is a lithium-ion capacitor or an electrolytic capacitor. The size of the energy storage capacitor is adjusted according to the size of the optical fiber energy transmission power. The size of the energy storage capacitor is adjusted by using a single energy storage capacitor or multiple energy storage capacitors in parallel.

[0009] Optionally, a zero-voltage-drop unidirectional conduction circuit is added between the photoelectric conversion unit and the power management unit to limit the current direction, prevent current backflow, and ensure that the photoelectric conversion unit is always in an output state.

[0010] Optionally, a multi-signal cooperative communication positioning model is constructed based on ultra-wideband and orthogonal frequency division multiplexing communication technology combined with the micro-nano device, and the multi-signal cooperative communication positioning model includes: Ultra-wideband communication module: used to send and receive ultra-wideband signals; Orthogonal frequency division multiplexing communication module: used to send and receive orthogonal frequency division multiplexing signals; Antenna array module: used to optimize signal transmission and reception; Processing module: used to process the received ultra-wideband signal and orthogonal frequency division multiplexing signal, extract positioning information and communication data and fuse them to obtain real-time node information.

[0011] Optionally, a star-ring topology structure is obtained by mixing the star topology and the ring topology, and a multi-signal cooperative communication positioning model is optimized based on the star-ring topology structure, including: Connect two or more star topologies to a ring topology through wired connections to form a unidirectional or bidirectional data flow path, obtain a star-ring topology structure, and optimize the network architecture of a multi-signal collaborative communication positioning model; A star topology is used in the core area of ​​the multi-signal cooperative communication positioning model. The core nodes of the star topology are responsible for centralized data processing and forwarding. A ring topology is used in the edge area. The redundant links of the ring topology also provide additional data transmission paths. When a node in the multi-signal cooperative communication positioning model cannot transmit data, other nodes using the star-ring topology can still transmit data normally.

[0012] Optionally, based on the optimized multi-signal cooperative communication positioning model, the double-layer optical fiber heterogeneous communication positioning network is dynamically polled to obtain real-time node information, including: Receiving ultra-wideband signals based on an ultra-wideband communication module, receiving orthogonal frequency division multiplexing signals based on an orthogonal frequency division multiplexing communication module, and optimizing ultra-wideband signals and orthogonal frequency division multiplexing signals based on an antenna array module; Based on the processing module, the optimized ultra-wideband signal and orthogonal frequency division multiplexing signal are extracted to obtain positioning information and communication data; The positioning information and communication data are integrated to obtain the real-time information of the node; During dynamic polling, the polling order is dynamically adjusted according to the real-time location and status of the network nodes.

[0013] Optionally, the circumference positioning method and the arrival time difference positioning method are combined to estimate and locate the real-time information of the node, including: The distance is calculated by measuring the propagation time of the signal from the transmitting node to the receiving node based on the circular positioning method, and then the position of the first node is obtained; Based on the arrival time difference positioning method, the time difference of receiving the same signal at different receiving nodes is measured to calculate the distance difference, and then the position of the second node is obtained; Node positioning is performed based on the joint estimation of the first node position and the second node position, and a double-layer optical fiber heterogeneous communication network positioning report is obtained and output.

[0014] Optionally, performing node positioning based on the joint estimation of the first node position and the second node position, obtaining and outputting a dual-layer optical fiber heterogeneous communication network positioning report, includes: Based on the first node position, obtain a first distance from the node to be located to each reference base station, and form a plurality of circles with the first distance as a radius; Based on the second node position, the time difference of the signal reaching different reference base stations is obtained, and it is converted into a distance difference to form a hyperbola; Solve the intersection of the circle and the hyperbola to determine the position of the node to be located, and summarize the positioning report of the double-layer optical fiber heterogeneous communication network.

[0015] In the second aspect, a positioning system for a dual-layer optical fiber heterogeneous communication hybrid topology network specifically includes: The positioning network construction module is used to construct a double-layer optical fiber multi-node communication architecture to integrate heterogeneous networks to obtain a double-layer optical fiber heterogeneous communication positioning network, and use modulation and demodulation technology combined with data compression algorithm to optimize network channels; Wherein, the double-layer optical fiber heterogeneous communication positioning network includes a polarization-maintaining optical fiber distributed sensing network and an optical fiber grating discrete sensing network; A communication positioning model construction module is used to construct a micro-nano device including a photoelectric conversion unit, a power management unit, and an energy storage unit, and to construct a multi-signal collaborative communication positioning model based on ultra-wideband and orthogonal frequency division multiplexing communication technology combined with the micro-nano device; Model optimization module, which is used to mix star topology and ring topology to obtain star-ring topology structure, and optimize the network architecture of multi-signal cooperative communication positioning model based on star-ring topology structure; The polling information module dynamically polls the double-layer optical fiber heterogeneous communication positioning network based on the optimized multi-signal cooperative communication positioning model to obtain the real-time information of the nodes; The network positioning module jointly estimates and locates the real-time information of the node based on the circular positioning method and the arrival time difference positioning method, and obtains and outputs the double-layer optical fiber heterogeneous communication network positioning report.

[0016] The beneficial effects of the second aspect can refer to the description of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the overall steps of a positioning method for a double-layer optical fiber heterogeneous communication hybrid topology network provided by the present invention; Figure 2 A schematic diagram of micro-nano device connections for a positioning method for a double-layer optical fiber heterogeneous communication hybrid topology networking provided by the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0019] The embodiment of the present invention provides a positioning method for a dual-layer optical fiber heterogeneous communication hybrid topology network, see Figure 1 , including the following steps: S1. Construct a double-layer optical fiber multi-node communication architecture to integrate heterogeneous networks to obtain a double-layer optical fiber heterogeneous communication positioning network, and use modulation and demodulation technology combined with data compression algorithm to optimize network channels; S2. Construct a micro-nano device including a photoelectric conversion unit, a power management unit, and an energy storage unit, and construct a multi-signal cooperative communication positioning model based on ultra-wideband and orthogonal frequency division multiplexing communication technology combined with the micro-nano device; S3, mixing star topology and ring topology to obtain a star-ring topology structure, and optimizing the multi-signal cooperative communication positioning model based on the star-ring topology structure; S4, based on the optimized multi-signal cooperative communication positioning model, dynamically poll the double-layer optical fiber heterogeneous communication positioning network to obtain real-time node information; S5. Combine the circular positioning method and the arrival time difference positioning method to estimate and locate the real-time information of the node, and obtain and output the double-layer optical fiber heterogeneous communication network positioning report.

[0020] In some embodiments, when executing step S1, high-performance optical fiber sensors, optical amplifiers, optical switches and other hardware devices are used to build the physical foundation of a double-layer optical fiber heterogeneous communication positioning network. Through preset algorithms and protocols, the two layers of networks with different optical fiber technologies and network architectures are integrated to achieve information sharing and collaborative work. Specifically, the double-layer optical fiber heterogeneous communication and positioning network includes a polarization-maintaining optical fiber distributed sensing network and a optical fiber grating discrete sensing network. The double-layer optical fiber heterogeneous communication and positioning network is a communication network composed of these two layers of different optical fiber technologies and network architectures. The two layers of the network are physically or logically independent of each other, but can work together to realize communication and positioning functions.

[0021] Furthermore, the polarization-maintaining fiber distributed sensing network uses the polarization characteristics of polarization-maintaining fiber for sensing, and senses changes in the external environment by measuring the transmission characteristics of the optical signal in the fiber (such as phase, intensity, etc.); the fiber grating discrete sensing network uses the reflection characteristics of the fiber grating for sensing, and senses changes in the external environment by measuring the wavelength changes of the reflected light.

[0022] Furthermore, through the collaborative work of the two-layer network, redundant backup and fault switching of communication signals can be achieved, the reliability of communication can be improved, and more accurate positioning services can be realized to meet high-precision positioning needs.

[0023] In fact, modulation and demodulation technology, modulation is to convert digital signals into analog signals, and demodulation is to restore the received analog signals to digital signals. In the double-layer optical fiber heterogeneous communication positioning network, modulation and demodulation technology can ensure the efficient and stable transmission of digital signals in optical fibers; Furthermore, the data compression algorithm achieves effective data compression by reducing data redundancy and repetition. In the double-layer optical fiber heterogeneous communication positioning network, the data compression algorithm can significantly reduce the amount of data transmission and improve the transmission efficiency. By adopting an efficient data compression algorithm, the network bandwidth requirement can be reduced, thereby saving network resources. At the same time, the data compression algorithm can also improve data storage efficiency and reduce the demand for storage space.

[0024] In some embodiments, when executing step S2, it includes: S2-1, construct a micro-nano device including a photoelectric conversion unit, a power management unit, and an energy storage unit; S2-2. Construct a multi-signal collaborative communication positioning model based on ultra-wideband and orthogonal frequency division multiplexing communication technology combined with the micro-nano device.

[0025] For details, see Figure 2When executing step S2-1, the process of constructing a micro-nano device including a photoelectric conversion unit, a power management unit, and an energy storage unit includes: The photoelectric conversion unit, the power management unit, and the energy storage unit are connected in sequence. The photoelectric conversion unit converts the light energy received from the optical fiber transmission into electrical energy through the photoelectric conversion unit, and outputs the electrical energy after maximum power point tracking through the power management unit, and charges the energy storage unit. It actually converts electrical energy into chemical energy for storage, and then converts the stored chemical energy into electrical energy for electrical energy output through the energy storage unit.

[0026] In fact, the photoelectric conversion unit is used to receive the light energy of the optical fiber transmission laser and convert the light energy into electrical energy to transmit to the power management unit. Its material is indium gallium arsenic ternary compound semiconductor, and the multi-junction battery structure is designed to absorb multi-layer photon energy and increase the photoelectric conversion efficiency. Furthermore, the power management unit is used to receive the electric energy converted from the photoelectric conversion unit and perform energy management to convert the electric energy into chemical energy, store it in the energy storage unit, use analog circuits to build a power tracking circuit, track the voltage at the maximum power output point of the photoelectric conversion part, so that the photoelectric conversion unit can continuously output the maximum power, and control the switch of the boost circuit based on the switch tube with constant conduction control; Furthermore, the switch tube of the constant conduction control is composed of a pulse timing unit and a comparator; Furthermore, the energy storage unit is used to discharge the chemical energy in the energy storage capacitor and convert it into electrical energy. The energy storage capacitor is a lithium-ion capacitor or an electrolytic capacitor. The size of the energy storage capacitor is adjusted according to the size of the optical fiber energy transmission power. The size of the energy storage capacitor is adjusted by using a single energy storage capacitor or multiple energy storage capacitors in parallel.

[0027] In fact, adding a zero-voltage-drop unidirectional conduction circuit between the photoelectric conversion unit and the power management unit can limit the current direction, prevent current backflow, and ensure that the photoelectric conversion unit is always in an output state.

[0028] It should be noted that compared with the traditional diode with a voltage drop of 0.2V~0.7V, the zero-voltage-drop unidirectional conduction circuit not only realizes the function of the diode, but also has no voltage drop and consumes much less power than the traditional diode, which minimizes the energy loss of the system. In addition, the energy storage unit is used to store the electric energy after the voltage is boosted, which can store more energy per unit volume.

[0029] Specifically, when executing step S2-2, a multi-signal cooperative communication positioning model is constructed based on ultra-wideband and orthogonal frequency division multiplexing communication technology combined with the micro-nano device, and the multi-signal cooperative communication positioning model includes: Ultra-wideband communication module: used to send and receive ultra-wideband signals to achieve high-precision positioning; OFDM communication module: used to send and receive OFDM signals to achieve high-speed data transmission; Antenna array module: used to optimize signal transmission and reception, and improve the accuracy of communication and positioning; Processing module: used to process the received ultra-wideband signal and orthogonal frequency division multiplexing signal, extract positioning information and communication data and fuse them to obtain real-time node information.

[0030] In some embodiments, when executing step S3, a star-ring topology structure is obtained by mixing the star topology and the ring topology, and a multi-signal cooperative communication positioning model is optimized based on the star-ring topology structure, including: Connect two or more star topologies to a ring topology through wired connections to form a unidirectional or bidirectional data flow path, obtain a star-ring topology structure, and optimize the network architecture of a multi-signal collaborative communication positioning model; A star topology is used in the core area of ​​the multi-signal cooperative communication positioning model. The core nodes of the star topology are responsible for centralized data processing and forwarding. A ring topology is used in the edge area. The redundant links of the ring topology also provide additional data transmission paths. Furthermore, when a node in the multi-signal cooperative communication positioning model cannot transmit data, other nodes using the star-ring topology can still transmit data normally.

[0031] In some embodiments, when executing step S4, polling the double-layer optical fiber heterogeneous communication positioning network based on the optimized multi-signal cooperative communication positioning model to obtain real-time node information includes: Receiving ultra-wideband signals based on an ultra-wideband communication module, receiving orthogonal frequency division multiplexing signals based on an orthogonal frequency division multiplexing communication module, and optimizing ultra-wideband signals and orthogonal frequency division multiplexing signals based on an antenna array module; Based on the processing module, the optimized ultra-wideband signal and orthogonal frequency division multiplexing signal are extracted to obtain positioning information and communication data; The positioning information and communication data are integrated to obtain the real-time information of the node.

[0032] Furthermore, during dynamic polling, the polling order is dynamically adjusted according to the real-time location and status of the network nodes.

[0033] In some embodiments, when executing step S5, the circumference positioning method and the arrival time difference positioning method are combined to estimate and locate the real-time information of the node, including: S5-1, measuring the propagation time of the signal from the transmitting node to the receiving node based on the circular positioning method to calculate the distance, and then obtain the first node position; S5-2, based on the arrival time difference positioning method, measure the time difference of different receiving nodes receiving the same signal to calculate the distance difference, and then obtain the second node position; S5-3. Perform node positioning based on the joint estimation of the first node position and the second node position, and obtain and output a dual-layer optical fiber heterogeneous communication network positioning report.

[0034] Specifically, when executing step S5-1, the principle of the circular positioning method is to estimate the time delay from the node to be positioned to the reference base station, thereby obtaining the distance between the reference point and the positioning point. This positioning method can make full use of the high time resolution of the signal at the receiving end to detect the time delay of the signal, thereby estimating the distance from the node to be positioned to the reference base station, and then according to the basic positioning algorithm, the coordinates of the node to be positioned can be calculated.

[0035] Specifically, when executing step S5-2, the principle of the arrival time difference positioning method is to determine the location of the transmitting source by measuring the time difference between the signal arriving at different monitoring stations. This method does not require time synchronization between the reference base station and the positioning point, but only requires strict time synchronization between the reference base stations.

[0036] In practical applications, by measuring the time difference between radio signals reaching antennas of different monitoring stations and converting it into distance difference, a hyperbola can be obtained. By measuring the time difference between three or more radio monitoring stations, two or more hyperbolas can be obtained. The intersection of these hyperbolas is the position of the node to be located.

[0037] Specifically, when executing step S5-3, node positioning is performed based on the joint estimation of the first node position and the second node position, and a dual-layer optical fiber heterogeneous communication network positioning report is obtained and output, including: Based on the first node position, obtain a first distance from the node to be located to each reference base station, and form a plurality of circles with the first distance as a radius; Based on the second node position, the time difference of the signal reaching different reference base stations is obtained, and it is converted into a distance difference to form a hyperbola; Solve the intersection of the circle and the hyperbola to determine the position of the node to be located, and summarize the positioning report of the double-layer optical fiber heterogeneous communication network.

[0038] Furthermore, the circular positioning algorithm can provide more accurate distance information, but requires strict time synchronization. The arrival time difference positioning method does not require time synchronization between the positioning point and the reference base station, but only requires strict time synchronization between the reference base stations. Combining the two positioning methods can fully utilize the advantages of both and improve the accuracy and reliability of positioning.

[0039] The embodiment of the present invention further provides a positioning system for a double-layer optical fiber heterogeneous communication hybrid topology network, specifically comprising: The positioning network construction module is used to construct a double-layer optical fiber multi-node communication architecture to integrate heterogeneous networks to obtain a double-layer optical fiber heterogeneous communication positioning network, and use modulation and demodulation technology combined with data compression algorithm to optimize network channels; Wherein, the double-layer optical fiber heterogeneous communication positioning network includes a polarization-maintaining optical fiber distributed sensing network and an optical fiber grating discrete sensing network; A communication positioning model construction module is used to construct a micro-nano device including a photoelectric conversion unit, a power management unit, and an energy storage unit, and to construct a multi-signal collaborative communication positioning model based on ultra-wideband and orthogonal frequency division multiplexing communication technology combined with the micro-nano device; Model optimization module, which is used to mix star topology and ring topology to obtain star-ring topology structure, and optimize the network architecture of multi-signal cooperative communication positioning model based on star-ring topology structure; The polling information module polls the double-layer optical fiber heterogeneous communication positioning network based on the optimized multi-signal cooperative communication positioning model to obtain the real-time information of the nodes. During the polling period, the polling order is dynamically adjusted according to the real-time position and status of the network nodes. The network positioning module jointly estimates and locates the real-time information of the node based on the circular positioning method and the arrival time difference positioning method, and obtains and outputs the double-layer optical fiber heterogeneous communication network positioning report.

[0040] Although the embodiments of the present invention are described in detail above, it is obvious to those skilled in the art that various modifications and variations can be made to these embodiments. However, it should be understood that such modifications and variations are within the scope and spirit of the present invention as described in the claims. Moreover, the present invention described herein may have other embodiments and may be implemented or realized in a variety of ways.

Claims

1. A positioning method for a dual-layer optical fiber heterogeneous communication hybrid topology network, characterized in that: include: A double-layer optical fiber multi-node communication architecture is constructed to integrate heterogeneous networks to obtain a double-layer optical fiber heterogeneous communication positioning network, and modulation and demodulation technology combined with data compression algorithm are used to optimize network channels; Wherein, the double-layer optical fiber heterogeneous communication positioning network includes a polarization-maintaining optical fiber distributed sensing network and an optical fiber grating discrete sensing network; Construct a micro-nano device including a photoelectric conversion unit, a power management unit, and an energy storage unit, and construct a multi-signal cooperative communication positioning model based on ultra-wideband and orthogonal frequency division multiplexing communication technology combined with the micro-nano device; The star-ring topology is obtained by mixing the star topology and the ring topology, and the multi-signal cooperative communication positioning model is optimized based on the star-ring topology. Based on the optimized multi-signal cooperative communication positioning model, the double-layer optical fiber heterogeneous communication positioning network is dynamically polled to obtain the real-time information of nodes; The circular positioning method and the arrival time difference positioning method are combined to estimate and locate the real-time information of the node, and a double-layer optical fiber heterogeneous communication network positioning report is obtained and output.

2. According to claim 1, a positioning method for a double-layer optical fiber heterogeneous communication hybrid topology network is characterized in that: The process of constructing micro-nano devices including photoelectric conversion units, power management units, and energy storage units includes: The photoelectric conversion unit, the power management unit, and the energy storage unit are connected in sequence. The photoelectric conversion unit converts the light energy received from the optical fiber transmission into electrical energy through the photoelectric conversion unit, and outputs the electrical energy after maximum power point tracking through the power management unit, and charges the energy storage unit. It actually converts electrical energy into chemical energy for storage, and then converts the stored chemical energy into electrical energy for electrical energy output through the energy storage unit.

3. The positioning method for a dual-layer optical fiber heterogeneous communication hybrid topology network according to claim 2 is characterized in that: The photoelectric conversion unit is used to receive the light energy of the optical fiber-transmitted laser and convert the light energy into electrical energy to transmit to the power management unit. Its material is indium gallium arsenide ternary compound semiconductor, and the multi-junction battery structure is designed to absorb multi-layer photon energy and increase the photoelectric conversion efficiency; The power management unit is used to receive the electric energy converted by the photoelectric conversion unit and perform energy management to convert the electric energy into chemical energy, store it in the energy storage unit, use analog circuits to build a power tracking circuit, track the voltage at the maximum power output point of the photoelectric conversion part, so that the photoelectric conversion unit can continuously output the maximum power, and control the switch of the boost circuit based on the switch tube with constant conduction control; Wherein, the switch tube of the constant conduction control is composed of a pulse timing unit and a comparator; The energy storage unit is used to discharge the chemical energy in the energy storage capacitor and convert it into electrical energy. The energy storage capacitor is a lithium-ion capacitor or an electrolytic capacitor. The size of the energy storage capacitor is adjusted according to the size of the optical fiber energy transmission power. The size of the energy storage capacitor is adjusted by using a single energy storage capacitor or multiple energy storage capacitors in parallel.

4. A positioning method for a double-layer optical fiber heterogeneous communication hybrid topology network according to claim 3, characterized in that: A zero-voltage-drop unidirectional conduction circuit is added between the photoelectric conversion unit and the power management unit to limit the current direction, prevent current backflow, and ensure that the photoelectric conversion unit is always in an output state.

5. The positioning method for a dual-layer optical fiber heterogeneous communication hybrid topology network according to claim 1 is characterized in that: A multi-signal cooperative communication positioning model is constructed based on ultra-wideband and orthogonal frequency division multiplexing communication technology combined with the micro-nano device. The multi-signal cooperative communication positioning model includes: Ultra-wideband communication module: used to send and receive ultra-wideband signals; Orthogonal frequency division multiplexing communication module: used to send and receive orthogonal frequency division multiplexing signals; Antenna array module: used to optimize signal transmission and reception; Processing module: used to process the received ultra-wideband signal and orthogonal frequency division multiplexing signal, extract positioning information and communication data, and integrate them to obtain real-time node information.

6. A positioning method for dual-layer optical fiber heterogeneous communication hybrid topology networking according to claim 1, characterized in that: The star-ring topology is obtained by mixing the star topology and the ring topology. The multi-signal cooperative communication positioning model is optimized based on the star-ring topology, including: Connect two or more star topologies to a ring topology through wired connections to form a unidirectional or bidirectional data flow path, obtain a star-ring topology structure, and optimize the network architecture of a multi-signal collaborative communication positioning model; A star topology is used in the core area of ​​the multi-signal cooperative communication positioning model. The core nodes of the star topology are responsible for centralized data processing and forwarding. A ring topology is used in the edge area. The redundant links of the ring topology also provide additional data transmission paths. When a node in the multi-signal cooperative communication positioning model cannot transmit data, other nodes using the star-ring topology can still transmit data normally.

7. A positioning method for a double-layer optical fiber heterogeneous communication hybrid topology network according to claim 5, characterized in that: Based on the optimized multi-signal cooperative communication positioning model, the double-layer optical fiber heterogeneous communication positioning network is dynamically polled to obtain real-time node information, including: Receiving ultra-wideband signals based on an ultra-wideband communication module, receiving orthogonal frequency division multiplexing signals based on an orthogonal frequency division multiplexing communication module, and optimizing ultra-wideband signals and orthogonal frequency division multiplexing signals based on an antenna array module; Based on the processing module, the optimized ultra-wideband signal and orthogonal frequency division multiplexing signal are extracted to obtain positioning information and communication data; The positioning information and communication data are integrated to obtain the real-time information of the node; During dynamic polling, the polling order is dynamically adjusted according to the real-time location and status of the network nodes.

8. The positioning method for a dual-layer optical fiber heterogeneous communication hybrid topology network according to claim 1, characterized in that: Combine the circumference positioning method and the arrival time difference positioning method to estimate the real-time information of the node, including: The distance is calculated by measuring the propagation time of the signal from the transmitting node to the receiving node based on the circular positioning method, and then the position of the first node is obtained; Based on the arrival time difference positioning method, the time difference of receiving the same signal at different receiving nodes is measured to calculate the distance difference, and then the position of the second node is obtained; Node positioning is performed based on the joint estimation of the first node position and the second node position, and a double-layer optical fiber heterogeneous communication network positioning report is obtained and output.

9. A positioning method for a double-layer optical fiber heterogeneous communication hybrid topology network according to claim 8, characterized in that: Based on the joint estimation of the first node position and the second node position, the node positioning is performed, and a dual-layer optical fiber heterogeneous communication network positioning report is obtained and output, including: Based on the first node position, obtain a first distance from the node to be located to each reference base station, and form a plurality of circles with the first distance as a radius; Based on the second node position, the time difference of the signal reaching different reference base stations is obtained, and it is converted into a distance difference to form a hyperbola; Solve the intersection of the circle and the hyperbola to determine the position of the node to be located, and summarize the positioning report of the double-layer optical fiber heterogeneous communication network.

10. A positioning system for dual-layer optical fiber heterogeneous communication hybrid topology networking, characterized in that: include: The positioning network construction module is used to construct a double-layer optical fiber multi-node communication architecture to integrate heterogeneous networks to obtain a double-layer optical fiber heterogeneous communication positioning network, and use modulation and demodulation technology combined with data compression algorithm to optimize network channels; Wherein, the double-layer optical fiber heterogeneous communication positioning network includes a polarization-maintaining optical fiber distributed sensing network and an optical fiber grating discrete sensing network; A communication positioning model construction module is used to construct a micro-nano device including a photoelectric conversion unit, a power management unit, and an energy storage unit, and to construct a multi-signal collaborative communication positioning model based on ultra-wideband and orthogonal frequency division multiplexing communication technology combined with the micro-nano device; Model optimization module, used to mix star topology and ring topology to obtain star-ring topology structure, and optimize multi-signal cooperative communication positioning model based on star-ring topology structure; The polling information module dynamically polls the double-layer optical fiber heterogeneous communication positioning network based on the optimized multi-signal cooperative communication positioning model to obtain the real-time information of the nodes; The network positioning module jointly estimates and locates the real-time information of the node based on the circular positioning method and the arrival time difference positioning method, and obtains and outputs the double-layer optical fiber heterogeneous communication network positioning report.

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