One-master-multiple-slave optical communication device based on optical communication

Abstract

The present invention belongs to the field of optical communication technology, and more specifically, it relates to a one-master-multiple-slave optical communication device based on optical communication. The present invention proposes a very simple optical structure: through an optical communication device composed of multiple master transceivers, an optical lens system, a transceiver, and a number of slave transceivers, the optical shortest path between the master and the slave is realized in a transparent monomer structure, and the optical output / incident port can also carry an optical lens to enhance the utilization rate of the optical signal; at the same time, the present invention has extremely low cost, and the optical channel of the present invention is cut and processed by highly light-transmitting materials such as acrylic or glass, or integrally die-casted by transparent resin, and only about tens of grams are needed in standard energy storage system applications; at the same time, the optical communication device of the present invention has extremely high speed and real-time performance. Since hand-in-hand forwarding is not required, and modulation methods such as orthogonal coding can be used, the real-time performance and communication transmission rate of the signal can be greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical communication, and more specifically, relates to a one-master-multiple-slave optical communication device based on optical communication. Background Art

[0002] In household and industrial and commercial energy storage systems, battery cells are unsafe devices that need to be tested for temperature, voltage, current, pressure, gas and other parameters to ensure the stability of operation and the evaluation of equipment life. However, due to the voltage difference after the battery string, there is an uncertain ground plane between each battery cell, which brings inconvenience to communication. In order to solve this problem, various isolated transceivers are usually used to achieve it, such as daisy chains based on capacitor or transformer isolation, optical optical communication and other devices to solve the problem of different ground planes of battery cells. For example, the current solution for achieving isolated communication mainly includes daisy chains, which have been widely used in applications, but it also has its own shortcomings, such as only being interconnected in a hand-in-hand manner, resulting in each node needing to forward the data of each node in the string, which will occupy a lot of bandwidth, and the data delay will be extremely large for occasions with a large number of series connections. At the same time, when any node is abnormal, the entire link will be blocked; now there is also an optical method for emerging communication. Optical media have many inherent advantages, such as voltage isolation. In industrial and commercial energy storage, the isolation voltage is more and more stringent in application requirements, followed by anti-interference. There are many power devices in the energy storage system, such as PCS, which will have a lot of switching noise. In addition, due to the access to the power grid, grid harmonic noise will also be introduced. The use of optical transmission can completely avoid line noise coupling. However, single optical communication also has its own shortcomings. In complex systems, the design of the optical path plays a vital role in the communication rate and reliability. Optical attenuation and crosstalk lead to low signal transmission rate and poor reliability of optical structure. Summary of the invention

[0003] The object of the present invention is to provide a one-master-multiple-slave optical communication device based on optical communication, which adopts a simple optical structure to achieve a higher signal transmission rate to reduce the signal transmission cost and realize one-master-multiple-slave efficient communication in an energy storage system.

[0004] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: a one-master-multiple-slave optical communication device based on optical communication, specifically comprising: a plurality of master transceivers, an optical lens system, and a plurality of slave transceivers; The master transceiver is placed at the head end of the optical communication device, and the transceiver is placed at the tail end of the optical communication device; the plurality of slave transceivers are placed at both sides of the optical lens system.

[0005] Preferably, the main transceiver is composed of a group of light-emitting tubes and a group of photoelectric receiving tubes.

[0006] Preferably, the optical communication device includes 1-2 master transceivers and multiple slave transceivers.

[0007] Preferably, the light emitting tube is an LED light emitting diode or a laser diode.

[0008] Preferably, the optical lens system consists of a thin transparent polygon, wherein each of the master transceiver and the slave transceiver is a dedicated optical channel, and each of the optical channels consists of 1 reflector, 2 transmission mirrors and a thin-plate total reflection channel.

[0009] Preferably, the transmission mirror and the reflection mirror can be customized into concave-convex lenses as required.

[0010] Preferably, in the optical channel, each pair of master-slave paths is an unobstructed shortest path.

[0011] Preferably, the optical channel is cut from acrylic or glass, or integrally die-casted from a transparent resin.

[0012] Preferably, in the optical channel, an orthogonal coded modulation (OFDM) method is used to configure a natural frequency for each slave transceiver and the transceiver to occupy a channel.

[0013] Preferably, the signals from the transceiver and the transceiver are modulated into different carrier frequencies to achieve multi-band coding, and the different carrier frequencies are any one of 100K, 110K, 120K, 130K, 140K, 150K, 160K, 170K, 180K, 190K, 200K, 210K or a combination thereof.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention proposes a minimalist optical structure: through an optical communication device composed of multiple master transceivers, an optical lens system, and a number of slave transceivers, the shortest optical path between the master and slaves is achieved in a transparent single structure, and the optical output / incident port can also carry an optical lens to enhance the utilization rate of the optical signal.

[0015] The present invention has extremely low cost. The optical channel of the present invention is cut and processed from acrylic or glass, or integrally die-casted with transparent resin. It only needs about tens of grams in standard energy storage system applications. At the same time, the optical communication device of the present invention has extremely high speed and real-time performance: since it does not require hand-in-hand forwarding and has an orthogonal coding modulation method, the real-time performance and communication transmission rate of the signal can be greatly improved. At the same time, the present invention has anti-interference characteristics. Since it is optical transmission, there is no electrical differential mode or common mode interference, and there is no electrostatic shock. It can also achieve high isolation voltage. Due to optical transmission, it is naturally extremely high in creepage distance, which is particularly suitable for industrial and commercial high-voltage application scenarios. At the same time, the optical system of the present invention and the master-slave transceiver are highly independent, and the slave transceiver can be implanted in the battery pack to achieve in-pack packaging. It serves as an effective marker for asset management and tiered utilization of retired battery packs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] Figure 1 A schematic diagram of a one-master-multiple-slave optical communication device based on optical communication provided by an embodiment of the present invention; Figure 2 A specific structural diagram of the optical channel in this embodiment provided for an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0019] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0020] Figure 1 FIG. 4 shows a one-master-multiple-slave optical communication device based on optical communication according to the present invention. Figure 1As shown, a one-master-multiple-slave optical communication device based on optical communication specifically comprises: a plurality of master transceivers, an optical lens system, a transceiver, and a plurality of slave transceivers; Wherein, the master transceiver is placed at the head end of the optical communication device, and the transceiver is placed at the tail end of the optical communication device; the plurality of slave transceivers are placed at both sides of the optical lens system; The master transceiver is composed of a group of light-emitting tubes and a group of photoelectric receiving tubes. Through the combination of the above devices, it has a stronger transmission power, a wider transmission and reception angle, and a higher receiving sensitivity. At the same time, multiple transceivers may be used to avoid direct blind spots. In this embodiment, the optical communication device includes 1 to 2 master transceivers and multiple slave transceivers. The light-emitting tube is an LED light-emitting diode, and the structure of the LED light-emitting diode is a PN junction, that is, donors and acceptors are respectively doped into two intrinsic semiconductors, so that two polarity carriers are formed in the semiconductor and a built-in electric field is generated. When a forward bias is applied to the PN junction, the two carriers, electrons and holes in the material, will recombine and emit light in the recombination zone. The radiation form of the LED is mainly spontaneous radiation, that is, electroluminescence; The photoelectric receiving tube is a semiconductor device that converts light signals into electrical signals. Its working principle is based on the photoelectric effect. When light is irradiated on the photosensitive surface of the photoelectric receiving tube, photons are absorbed and photoelectrons are excited. These photoelectrons are collected and guided to the output end under the action of the electric field, thereby generating a photocurrent. The magnitude of the photocurrent is proportional to the intensity of the incident light, thereby realizing the detection and conversion of light. The core component of the photoelectric receiving tube is a PN junction of a special material. In order to receive more incident light, the PN junction area is larger and the electrode area is smaller. Under the action of reverse voltage, when there is no light, the reverse current is very small (generally less than 0.1 microamperes), which is called dark current. When there is light, photons enter the PN junction and generate electron-hole pairs. These carriers participate in drift motion under the action of reverse voltage, making the reverse current significantly larger. The greater the intensity of light, the greater the reverse current.

[0021] The slave transceiver has the same structure as the master transceiver. It is worth mentioning that the slave transceiver has a smaller transmission power and lower power consumption, so that the battery has a very long standby life. At the same time, the slave transceiver is implanted in the battery pack to achieve in-pack packaging, which serves as an effective marker for asset management and tiered utilization of retired battery packs.

[0022] The optical lens system is composed of a thin transparent polygon; specifically, the thin transparent polygon in the art is generally defined as 0.5-2 mm; wherein each of the master transceiver and the slave transceiver is a dedicated optical channel, and each of the optical channels is composed of a reflector, two transmission mirrors and a thin plate total reflection channel, and the transmission mirror and the reflector can be customized into a concave-convex lens as required, and the convex-concave lens is also called a crescent-shaped concave lens, a crescent-shaped diffused lens, or a perihelion-shaped concave lens, which has two curvature radii, and the curvature radius of the front curved surface is greater than the curvature radius of the rear curved surface, thereby achieving optical focusing and improving the transceiver performance; in the optical channel, each pair of master-slave paths is an unobstructed shortest path, and will not affect other master-slave optical paths; through the above-mentioned exit / incident edge structure integrating multiple lenses, the optical convergence and the utilization rate of the optical signal are greatly enhanced; Attached Figure 2 The specific structure of the optical channel in this embodiment is shown. Figure 2 As shown, in the optical channel, a multi-band carrier modulation method such as (OFDM) orthogonal coding can be used to configure a natural frequency for each slave transceiver and transceiver and occupy a channel to improve signal transmission efficiency; At the same time, the above structure realizes multi-frequency modulation and orthogonal modulation, which is used to realize full-duplex transmission and reception of one master and multiple slaves at the same time; At the same time, the optical channel is cut and processed from acrylic or glass, or integrally die-casted from transparent resin, and only requires about tens of grams in standard energy storage system applications, greatly saving communication costs.

[0023] In optical communication systems, the bandwidth provided by a channel is usually much wider than the bandwidth required to transmit one signal. If a channel only transmits one signal, it is very wasteful. In order to make full use of the channel bandwidth, frequency division multiplexing can be used. The main idea of ​​orthogonal coding modulation is to divide the channel into several orthogonal sub-channels, convert the high-speed data signal into parallel low-speed sub-data streams, and modulate them to transmit on each sub-channel. Orthogonal signals can be separated by using correlation technology at the receiving end, which can reduce mutual interference (ISI) between sub-channels. The signal bandwidth on each sub-channel is smaller than the correlation bandwidth of the channel, so each sub-channel can be regarded as flat fading, thereby eliminating inter-symbol interference. Moreover, since the bandwidth of each sub-channel is only a small part of the original channel bandwidth, channel equalization becomes relatively easy. Orthogonal coding modulation technology uses a discontinuous multi-tone technology to merge a large number of signals in different frequencies called carriers into a single signal to complete signal transmission. Since this technology has the ability to transmit signals under noise interference, it is often used in transmission media that are easily affected by external interference or have poor resistance to external interference. Therefore, it has good application in energy storage systems with a lot of switching noise.

[0024] Specifically, the signals from the transceiver and the transceiver are modulated into different carrier frequencies to achieve multi-band coding, such as 100K, 110K, 120K, 130K, 140K, 150K, 160K, 170K, 180K, 190K, 200K, and 210K; Furthermore, the process of configuring a natural frequency and occupying a channel for each slave transceiver and transceiver using orthogonal coded modulation (OFDM) is specifically as follows: ‌Signal division‌: The original optical signal is divided into multiple subcarriers. The spectrum bandwidth of each subcarrier is orthogonal to each other and does not overlap. In this way, the original optical signal can be transmitted simultaneously through multiple subcarriers, thereby improving the transmission efficiency of the signal‌.

[0025] Subcarrier modulation: Each subcarrier is modulated into an independent modulation signal. Common modulation methods include QAM (quadrature amplitude modulation) and PSK (phase modulation). Through modulation, the original optical signal is converted into a series of complex signals for transmission on different subcarriers.

[0026] ‌Parallel transmission‌: In the OFDM system, each subcarrier is transmitted simultaneously, which requires parallel processing of each subcarrier. Through parallel transmission, the OFDM system can transmit signals on multiple subcarriers at the same time, increasing the overall transmission rate‌.

[0027] ‌Subcarrier demodulation‌: At the receiving end, the received signal needs to be demodulated to restore it to the original modulated signal. The demodulation process is the inverse process of modulation, and the demodulation operation can be performed using the corresponding demodulation algorithm and demodulator‌.

[0028] ‌Signal merging‌: After demodulation, the signals on each subcarrier need to be merged to restore the original signal. This step is the process of merging the signals on each subcarrier to obtain the original signal.

[0029] Embodiment 2: This embodiment also includes a one-master-multiple-slave optical communication system based on optical communication, and the system adopts the one-master-multiple-slave optical communication method based on optical communication of Embodiment 1.

[0030] Embodiment three, this embodiment may include an electronic device, including a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, each step of the one-master-multiple-slave optical communication method based on optical communication in embodiment one is implemented, and the same technical effect can be achieved.

[0031] Embodiment 4, this example may include a computer-readable storage medium, on which a data processing program is stored, and the data processing program is executed by a processor to perform various steps of a one-master-multiple-slave optical communication method based on optical communication in embodiment 1.

[0032] It should be understood by those skilled in the art that the embodiments of this article can be provided as methods, devices (equipment), or computer program products. Therefore, this article can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Including but not limited to RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassette, tape, disk storage or other magnetic storage device, or any other medium that can be used to store desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that communication media generally contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0033] This document is described with reference to flowcharts and / or block diagrams of methods, apparatuses (devices), and computer program products according to the embodiments of this document. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0034] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0035] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods of the technology of the present invention, and are not intended to impose any formal restrictions on the implementation methods of the technology of the present invention. Any person skilled in the art may make some changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as the technology or embodiments that are essentially the same as the present invention. Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here, and that various obvious changes, readjustments and substitutions can be made to those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may also include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A one-master-multiple-slave optical communication device based on optical communication, characterized in that: Specifically include: One or more master transceivers, an optical lens system, a transceiver, and a plurality of slave transceivers; The master transceiver is placed at the head end of the optical communication device, and the transceiver is placed at the tail end of the optical communication device; the plurality of slave transceivers are placed at both sides of the optical lens system.

2. The one-master-multiple-slave optical communication device based on optical communication according to claim 1, characterized in that: The main transceiver is composed of a group of light-emitting tubes and a group of photoelectric receiving tubes.

3. The one-master-multiple-slave optical communication device based on optical communication according to claim 2, characterized in that: The optical communication device includes 1-2 master transceivers and a plurality of slave transceivers.

4. A one-master-multiple-slave optical communication device based on optical communication according to claim 2 or 3, characterized in that: The light emitting tube is an LED light emitting diode.

5. The one-master-multiple-slave optical communication device based on optical communication according to claim 1, characterized in that: The optical lens system is composed of a thin transparent polygon, wherein each of the master transceiver and the slave transceiver is a dedicated optical channel, and each of the optical channels is composed of a reflector, two transmission mirrors and a thin plate total reflection channel; the transmission mirror integrates a concave-convex optical lens.

6. The one-master-multiple-slave optical communication device based on optical communication according to claim 5, characterized in that: The transmission mirror and the reflection mirror can be customized into concave and convex lenses as required.

7. The one-master-multiple-slave optical communication device based on optical communication according to claim 5, characterized in that: In the optical channel, each pair of master-slave paths is an unobstructed shortest path.

8. The one-master-multiple-slave optical communication device based on optical communication according to claim 7, characterized in that: The optical channel is cut and processed from acrylic or glass, or integrally die-casted from transparent resin.

9. The one-master-multiple-slave optical communication device based on optical communication according to claim 7, characterized in that: In the optical channel, each slave transceiver and receiver is configured with a natural frequency and occupies a channel by using an orthogonal coded modulation method.

10. The one-master-multiple-slave optical communication device based on optical communication according to claim 9, characterized in that: The signals from the transceiver and the transceiver are modulated into different carrier frequencies to achieve multi-band coding, and the different carrier frequencies are any one of 100K, 110K, 120K, 130K, 140K, 150K, 160K, 170K, 180K, 190K, 200K, 210K or a combination thereof.

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