CN115242307A - Unmanned aerial vehicle machine carries CAN optical fiber conversion equipment - Google Patents
Unmanned aerial vehicle machine carries CAN optical fiber conversion equipment Download PDFInfo
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- CN115242307A CN115242307A CN202210939689.9A CN202210939689A CN115242307A CN 115242307 A CN115242307 A CN 115242307A CN 202210939689 A CN202210939689 A CN 202210939689A CN 115242307 A CN115242307 A CN 115242307A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 31
- 230000003287 optical effect Effects 0.000 claims abstract description 35
- 238000004891 communication Methods 0.000 claims abstract description 17
- 230000007704 transition Effects 0.000 claims abstract description 5
- 230000005540 biological transmission Effects 0.000 claims description 18
- 238000013500 data storage Methods 0.000 claims description 15
- 238000002955 isolation Methods 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 9
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
- H04B10/25753—Distribution optical network, e.g. between a base station and a plurality of remote units
- H04B10/25756—Bus network topology
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
- H04B10/25752—Optical arrangements for wireless networks
- H04B10/25758—Optical arrangements for wireless networks between a central unit and a single remote unit by means of an optical fibre
- H04B10/25759—Details of the reception of RF signal or the optical conversion before the optical fibre
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2589—Bidirectional transmission
- H04B10/25891—Transmission components
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Abstract
The invention discloses an airborne CAN optical fiber conversion device of an unmanned aerial vehicle, which comprises: the system comprises a core controller, a global bus module and a local bus module; the core controller comprises a PS module, a PL module and an AXI bus; the AXI bus is respectively connected with the PS module and the PL module; the global bus module is an optical fiber communication interface and comprises a first PCIE interface, an optical fiber protocol control chip and an optical module; the first PCIE interface, the optical fiber protocol control chip and the optical module are sequentially connected; the first PCIE interface is provided by a hard core resource in the PS module; the local bus module is a CAN bus interface; the bus interface is provided by the hardmac resources in the PL block; can be compatible multiple traditional bus through this equipment, and this equipment is small, the performance is high, the scalability can be strong, is favorable to realizing the smooth transition of unmanned aerial vehicle bus technical update.
Description
Technical Field
The invention belongs to the technical field of optical fiber communication, and particularly relates to airborne CAN optical fiber conversion equipment of an unmanned aerial vehicle.
Background
With the rapid development of electronic technology and the improvement of digitization degree, the communication data volume of airborne equipment is increased sharply. Optical fiber communication has the advantages of high transmission rate, large transmission distance, good compatibility and the like, and gradually begins to be popularized and applied in unmanned aerial vehicle equipment. However, many standard products or sensing devices use interfaces such as CAN, and optical fiber communication cannot be realized.
Therefore, how to transmit interface data such as the CAN to the optical fiber bus in a centralized manner to realize compatibility with a shaped product becomes a key problem of current research.
Disclosure of Invention
In view of the above problems, the present invention provides an onboard CAN fiber conversion device for an unmanned aerial vehicle, which at least solves some of the above technical problems, the device is compatible with various traditional buses, and the device has a small volume, high performance and strong expandability, and is beneficial to realizing smooth transition of bus technology update of the unmanned aerial vehicle.
The embodiment of the invention provides an airborne CAN optical fiber conversion device of an unmanned aerial vehicle, which comprises: the system comprises a core controller, a global bus module and a local bus module;
the core controller is electrically connected with the global bus module and the local bus module respectively;
the core controller comprises a PS module, a PL module and an AXI bus; the AXI bus is respectively connected with the PS module and the PL module;
the global bus module is an optical fiber communication interface and comprises a first PCIE interface, an optical fiber protocol control chip and an optical module; the first PCIE interface, the optical fiber protocol control chip and the optical module are connected in sequence; the first PCIE interface is provided by a hardmac resource in the PS module;
the local bus module is a CAN bus interface; the CAN bus interface is provided by a hardmac resource in the PL module.
Further, the core controller is a ZU5EV chip.
Further, the optical fiber protocol control chip is a TFC1553 series chip; the optical module is an HTS4301 chip.
Furthermore, the optical fiber protocol control chip comprises an EMIF interface, a second PCIE interface, an SPI interface, an interface switching circuit, a register circuit, a data storage circuit, a protocol parsing module, a serial data transceiver circuit CHA, and a serial data transceiver circuit CHB;
the second PCIE interface is connected with the first PCIE interface;
the EMIF interface, the second PCIE interface and the SPI interface are all connected with the interface switching circuit;
the interface switching circuit is respectively connected with the register circuit and the data storage circuit; the register circuit and the data storage circuit are connected with the serial data transceiver circuit CHA or the serial data transceiver circuit CHB through the protocol analysis module;
the serial data transceiver circuit CHA and the serial data transceiver circuit CHB are both connected to the optical module.
Further, the protocol analysis module comprises a data transmission module and an instruction transmission module;
the data transmission module is configured to perform protocol conversion on the relevant data of the register circuit and the data storage circuit, and transmit a protocol conversion result to the serial data transceiver circuit CHA or the serial data transceiver circuit CHB;
the instruction transmission module is configured to transmit the instruction related to the register circuit and the data storage circuit to the serial data transceiver circuit CHA or the serial data transceiver circuit CHB.
Further, the optical module comprises an optical module A and an optical module B;
the optical module A is connected with the serial data transceiver circuit CHA;
the optical module B is connected with the serial data transceiver CHB;
and the optical module A and the optical module B are used for performing photoelectric conversion.
Further, the CAN bus interface comprises CAN protocol logic and a CAN bus transceiver;
the CAN protocol logic is used for realizing a CAN communication protocol in the PL module;
the CAN bus transceiver is used for realizing level conversion of signals;
the CAN bus transceiver is an isolation transceiver ADM3053.
Compared with the prior art, the airborne CAN optical fiber conversion equipment of the unmanned aerial vehicle has the following beneficial effects: the equipment can be compatible with various traditional buses, is small in size, high in performance and strong in expandability, and is favorable for realizing smooth transition of bus technology updating of the unmanned aerial vehicle.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a circuit framework diagram of an airborne CAN optical fiber conversion device of an unmanned aerial vehicle according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of an optical fiber communication interface circuit according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a CAN bus interface circuit according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1, an embodiment of the present invention provides an airborne CAN fiber conversion device for an unmanned aerial vehicle, which specifically includes a core controller, a global bus module, and a local bus module; the core controller is electrically connected with the global bus module and the local bus module respectively; the core controller comprises a PS module, a PL module and an AXI bus; the AXI bus is respectively connected with the PS module and the PL module; the global bus module is an optical fiber communication interface and comprises a first PCIE interface, an optical fiber protocol control chip and an optical module; the first PCIE interface, the optical fiber protocol control chip and the optical module are connected in sequence; the first PCIE interface is provided by a hard core resource in the PS module; the local bus module is a CAN bus interface; and the CAN bus interface is provided by the hardmac resources in the PL module.
The core controller, the global bus module, and the local bus module will be described in detail next.
1. Core controller
Considering the light and small requirements of the unmanned aerial vehicle-mounted CAN optical fiber conversion equipment, the core processor should be miniaturized and highly integrated as much as possible. Therefore, in the embodiment of the invention, the ZU5EV chip in the Zynq UltraScale + system is selected as the core controller; the chip adopts the technology of Processing System (PS) + Programmable Logic (PL), integrates four-core ARM Cortex-A53, two-core ARM Cortex-R5F and FPGA Programmable Logic on one chip, and well solves the problem of miniaturization.
2. Global bus module
The global bus module is an optical fiber communication interface, and a circuit diagram of the optical fiber communication interface specifically refers to fig. 2: the optical module comprises a first PCIE interface, an optical fiber protocol control chip and an optical module; wherein:
the optical fiber protocol control chip adopts a domestic special optical fiber protocol chip TFC1553 series, the optical fiber protocol control chip is mainly used for realizing the analysis of an FC-AE-1553 transmission protocol, and the TFC1553 series chip is suitable for a bus type optical fiber network topological structure and has a data transmission function with high reliability and strong real-time property; the optical fiber protocol control chip comprises an EMIF interface, a second PCIE interface, an SPI interface, an interface switching circuit, a register circuit, a data storage circuit, a protocol analysis module, a serial data transceiving circuit CHA and a serial data transceiving circuit CHB; the EMIF interface, the second PCIE interface and the SPI interface can realize data transmission with various processors, and various application scenes can be met.
The second PCIE interface is connected with the first PCIE interface; the EMIF interface, the second PCIE interface and the SPI interface are all connected with the interface switching circuit; the interface switching circuit is respectively connected with the register circuit and the data storage circuit; the register circuit and the data storage circuit are connected with the serial data transceiver circuit CHA or the serial data transceiver circuit CHB through the protocol analysis module. The protocol analysis module comprises a data transmission module and an instruction transmission module; the data transmission module is used for carrying out protocol conversion on related data of the register circuit and the data storage circuit and transmitting a protocol conversion result to the serial data transceiving circuit CHA or the serial data transceiving circuit CHB; the instruction transmission module is used for transmitting the relevant instructions of the register circuit and the data storage circuit to the serial data transceiver circuit CHA or the serial data transceiver circuit CHB.
The optical module selects an HTS4301 chip for receiving and transmitting link signals to complete the conversion of photoelectric signals; the optical module comprises an optical module A and an optical module B; the optical module A is connected with a serial data transceiver circuit CHA; the optical module B is connected with the serial data transceiving circuit CHB; the two serial data transceiving interfaces CHA and CHB are correspondingly connected with the two groups of high-speed optical modules A and B to realize optical fiber protocol communication.
3. The local bus module is a CAN bus interface; wherein:
CAN bus interface
The information interaction of the bus conversion equipment, the external motor and the external steering engine is realized by a CAN bus. The CAN bus interface comprises a CAN protocol logic part and a CAN bus transceiver part, wherein the CAN protocol logic part is used for realizing a CAN communication protocol, and the CAN bus transceiver part is mainly responsible for level conversion of signals. As shown in fig. 3, which is a schematic diagram of a CAN bus interface circuit, in order to reduce the volume and weight of the device, the CAN protocol logic is implemented in the PL portion of the core processor ZU5EV, and the baud rate of the CAN bus CAN be set as follows: 100Kbps, 125Kbps, 250Kbps, 500Kbps, 1Mbps, etc.; the CAN protocol logic is realized in a PL module part of the core processor ZU5EV, and CAN protocol communication is realized through the latch signal ALE, the chip selection signal CS #, the read valid signal RD #, the write valid signal WR #, and the like.
The CAN bus transceiver is mainly responsible for level conversion of signals, and serial data and differential signals in the transceiver circuit need to be converted into each other according to requirements. In order to improve the anti-interference capability of the bus and ensure that the bus communication is reliable and is not influenced by the fluctuation of the reference ground; in the embodiment of the invention, the CAN bus transceiver selects an isolating transceiver ADM3053 as the CAN bus transceiver.
The ADM3053 is a signal power isolation transceiver integrated with an isolation type DC-DC converter, the power isolation can better ensure the working effectiveness of an isolation circuit, and the isolation and transceiving functions can be realized in a centralized way only by one chip without additionally designing an isolation circuit or a transceiving circuit.
The main functions of ADM3053 are as follows: 1) 5V single power supply; 2) A dual channel isolator and CAN transceiver; 3) A full-isolation interface is established between the CAN protocol controller and a physical layer bus; 4) The highest working rate of 1 Mbps; 5) The current can be limited and the circuit can be switched off thermally, so that the output short circuit can be prevented.
The embodiment of the invention provides an airborne CAN optical fiber conversion device of an unmanned aerial vehicle, which has the following beneficial effects: this equipment can compatible multiple traditional bus, and this equipment is small, the performance is high, the scalability can be strong, is favorable to realizing the smooth transition of unmanned aerial vehicle bus technical update. The core processor has the advantages of miniaturization and high integration. The EMIF interface, the second PCIE interface and the SPI interface in the optical fiber protocol control chip can realize data transmission with various processors, and can meet various application scenes. The CAN bus transceiver is an isolation transceiver ADM3053, the working effectiveness of an isolation circuit CAN be better ensured, isolation and transceiving functions CAN be realized in a centralized manner only by the chip, the isolation circuit or the transceiving circuit does not need to be additionally designed, and the volume and the weight of the equipment are further reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. The utility model provides an unmanned aerial vehicle machine carries CAN optical fiber conversion equipment which characterized in that includes: the system comprises a core controller, a global bus module and a local bus module;
the core controller is electrically connected with the global bus module and the local bus module respectively;
the core controller comprises a PS module, a PL module and an AXI bus; the AXI bus is respectively connected with the PS module and the PL module;
the global bus module is an optical fiber communication interface and comprises a first PCIE interface, an optical fiber protocol control chip and an optical module; the first PCIE interface, the optical fiber protocol control chip and the optical module are connected in sequence; the first PCIE interface is provided by a hardmac resource in the PS module;
the local bus module is a CAN bus interface; the CAN bus interface is provided by a hardmac resource in the PL module.
2. The on-board CAN fiber optic conversion device of an unmanned aerial vehicle of claim 1, wherein the core controller is a ZU5EV chip.
3. The on-board CAN fiber optic conversion device of an unmanned aerial vehicle of claim 1, wherein the fiber protocol control chip is a TFC1553 series chip; the optical module is an HTS4301 chip.
4. The unmanned aerial vehicle on-board CAN fiber conversion device of claim 1, wherein the fiber protocol control chip comprises an EMIF interface, a second PCIE interface, an SPI interface, an interface switching circuit, a register circuit, a data storage circuit, a protocol parsing module, a serial data transceiver circuit CHA and a serial data transceiver circuit CHB;
the second PCIE interface is connected with the first PCIE interface;
the EMIF interface, the second PCIE interface and the SPI interface are all connected with the interface switching circuit;
the interface switching circuit is respectively connected with the register circuit and the data storage circuit; the register circuit and the data storage circuit are connected with the serial data transceiver circuit CHA or the serial data transceiver circuit CHB through the protocol analysis module;
the serial data transceiver circuit CHA and the serial data transceiver circuit CHB are both connected to the optical module.
5. The unmanned aerial vehicle on-board CAN fiber conversion device of claim 4, wherein the protocol parsing module comprises a data transmission module and a command transmission module;
the data transmission module is configured to perform protocol conversion on the relevant data of the register circuit and the data storage circuit, and transmit a protocol conversion result to the serial data transceiver circuit CHA or the serial data transceiver circuit CHB;
the instruction transmission module is configured to transmit the instruction related to the register circuit and the data storage circuit to the serial data transceiver circuit CHA or the serial data transceiver circuit CHB.
6. The UAV onboard CAN fiber optic transition device of claim 4, wherein the optical module comprises optical module A and optical module B;
the optical module A is connected with the serial data transceiver circuit CHA;
the optical module B is connected with the serial data transceiving circuit CHB;
and the optical module A and the optical module B are used for performing photoelectric conversion.
7. The unmanned aerial vehicle-mounted optical fiber CAN conversion device of claim 1, wherein the CAN bus interface comprises CAN protocol logic and a CAN bus transceiver;
the CAN protocol logic is used for realizing a CAN communication protocol in the PL module;
the CAN bus transceiver is used for realizing level conversion of signals;
the CAN bus transceiver is an isolation transceiver ADM3053.
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Cited By (1)
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