CN111708001A - Laser radar data acquisition system with remote data transmission function - Google Patents
Laser radar data acquisition system with remote data transmission function Download PDFInfo
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- CN111708001A CN111708001A CN202010553733.3A CN202010553733A CN111708001A CN 111708001 A CN111708001 A CN 111708001A CN 202010553733 A CN202010553733 A CN 202010553733A CN 111708001 A CN111708001 A CN 111708001A
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- 230000006870 function Effects 0.000 claims description 12
- 238000013461 design Methods 0.000 claims description 7
- 238000013500 data storage Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
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Abstract
The invention provides a laser radar data acquisition system which takes a ZYNQ series development board of Xilinx company as a control center, processes high-speed AD sampled data and stores the processed data to a solid state disk, and simultaneously periodically controls the data processed after AD sampling to be remotely transmitted to the local for storage through a new generation of high-speed WIFI module, thereby realizing dual-mode storage and effectively reducing the load of a laser radar system.
Description
Technical Field
The invention discloses a laser radar data acquisition system with a remote data transmission function, which is mainly used for processing and storing massive and high-speed laser radar data.
Background
With the widespread application of 5G, the laser radar plays a great role in the civil and military fields, and the typical applications of the laser radar include digital surface model generation, terrain three-dimensional modeling, water depth measurement, unmanned driving and the like. At present, the commonly used data storage modes of the laser radar include a DRAM embedded in an FPGA, a DDR3 embedded in a ZYNQ, an external FLASH of the FPGA and the like, and the storage requirement of the laser radar for long-time and high-bandwidth data acquisition cannot be met. The invention provides a laser radar data acquisition system, which takes a ZYNQ series expandable processing platform of Xilinx company as a control center, processes and stores high-speed AD sampled data to a solid state disk, and simultaneously periodically controls the data processed after AD sampling to be remotely transmitted to the local for storage through a new generation of high-speed WIFI module, thereby effectively solving the problems of ground load and cost of the laser radar system.
Disclosure of Invention
The invention provides a laser radar data acquisition system which takes a ZYNQ series development board of Xilinx company as a control center, processes high-speed AD sampled data and stores the processed data to a solid state disk, and simultaneously periodically controls the data processed after AD sampling to be remotely transmitted to the local for storage through a new generation of high-speed WIFI module.
The laser radar data acquisition system with the remote data transmission function has the following concrete implementation method:
(1) a ZYNQ-based high-speed laser radar data acquisition system with a remote data transmission function mainly comprises a ZYNQ-controlled high-speed AD sampling module; the COM Express embedded expansion module is used for expanding PCIE to SSD storage and WIFI transmission; a new generation of WIFI transmission module. Echo signals of the laser radar are subjected to high-speed AD sampling, a PL part mainly completes logic control and high-speed operation, and a Ubuntu bare engine system designed by a PS part can read data processed by PL through DDR3, and collected data in the PL is subjected to SSD storage and remote transmission.
(2) The AD module hardware part is an FMC module with a high-speed JESD204B interface, wherein the FMC interface of ZYNQ has strong applicability, and can be matched with other FMC daughter cards to complete data acquisition of each application. And if the speed requirement is higher, a development board supporting the JESD204C interface with higher transmission speed is selected. The software part is realized by configuring hardware environments such as a JESD204B IP core, a PCIE IP core and the like through a Vivado development environment, and the serial data transmission and the deterministic delay of a link are realized.
(3) The basic function of the PCIE Switch is to expand the number of PCIE channels, and because there is no sufficient PCIE interface on ZYNQ, the Switch is used to provide bridging, and two paths of PCIE x8 interfaces are expanded, one path is connected to the SSD, and the other path is connected to the WIFI module.
(4) The PCIe carrier plate (ZYNQ) is used for completing data collection and packaging and sending the data to the DDR3, and when the data volume reaches a set value, interruption is triggered to initiate DMA, so that data transmission from the PCIE module to the SSD is realized.
(5) ZYNQ sends data to the WIFI module through the high-speed serial port in different time intervals, the ground WIFI module finishes receiving and sends the data to a PC (personal computer) containing an RAID (redundant array of independent disk) controller and a disk array for storage, and the storage space is adjustable.
Drawings
FIG. 1 is a general system design diagram
FIG. 2 is a WIFI Module design drawing
Detailed Description
Example 1:
(1) the whole system mainly comprises a ZYNQ-controlled high-speed AD sampling module and a new-generation high-speed WIFI transmission module.
(2) The development board can select a commonly used ZYNQ7000 expansion board; the AD board can select ADC12DJ3200 dual-channel acquisition, each channel has a 3.2GS/s sampling rate, 2GS on-board memory and a third generation PCIe x8 bus; the theoretical storage rate into the SSD is 7.877GB/s (including protocol overhead); the WIFI data transmission adopts a new generation WIFI6 standard, the single-stream bandwidth is 1201Mbps, the module also supports PCIE transmission, the supported operating systems are WIN7/10 and LINUX2.4, and the transmission rate is effectively improved.
(3) The WIFI module comprises a transceiving 5G antenna, a clock, a control center, a power supply, a memory, a UART interface and a PCIE interface. WIFI6 introduces uplink MU-MIMO, 1024QAM modulation mode, 160MHz channel bandwidth, 8x8MIMO and other technologies, and effectively improves transmission rate and coverage. The far-end WIFI module transmits data through a PCIE interface expanded by the PCIE Switch, and the near-end WIFI module is connected with a PC through the PCIE interface to realize dual-mode storage.
(4) The WIFI6 chip can select a solution of an Everest chip of the Celeno, the Everest adopts 12x12BGA package and a PCle-based interface, a link rate of 4.8Gbps is generated by using an AX.L subsystem owned by the Celeno, and 2.4 and 5GHz frequency bands are supported.
(5) Dual mode memory timing allocation is implemented in a finite state machine. When the data volume in the DDR3 reaches a set value, an interrupt is triggered to initiate a DMA1, data transmission from the PCIE module to the SSD is achieved, the DMA2 is executed after the transmission is completed, and remote data transmission is achieved.
(6) The programming software comprises vivado2018.3 and SDK. Hardware environment configurations such as a ZYNQ IP core, a JESD204B IP core, a PCIE IP core, a self-built AD IP core and the like are carried out in vivado2018.3, and AD sampling data are processed into Excel format data for storage. And carrying out software environment configuration in the SDK and writing a control program. The Excel table at the PC end can be stored by adopting QT CaptureLab to perform file blocking, timestamp setting and storage file setting.
The above description is only one specific embodiment of the present invention, but the present invention is not limited to this embodiment.
Claims (7)
1. A ZYNQ-based high-speed laser radar data acquisition system with a remote data transmission function mainly comprises a ZYNQ-controlled high-speed AD sampling module; the PCIe Switch embedded expansion module is used for expanding PCIE to SSD storage and WIFI transmission; a new generation of WIFI transmission module.
2. The design method of a ZYNQ-based high-speed lidar data acquisition system with a remote data transmission function as claimed in claim 1, wherein the high-speed AD module controlled by ZYNQ completes the acquisition of echo signals.
3. The design method of a ZYNQ-based high-speed lidar data acquisition system with a remote data transmission function as claimed in claim 2, characterized in that the AD module hardware part is an FMC module with a high-speed JESD204B interface, wherein the FMC interface of ZYNQ has strong applicability, and can be matched with other FMC daughter cards to complete data acquisition of individual applications; if the speed requirement is higher, selecting a development board supporting a JESD204C interface with higher transmission speed; echo signals of the laser radar are subjected to high-speed AD sampling, a PL part mainly completes logic control and high-speed operation and is processed into data in an Excel table format, hardware environments such as a JESD204B IP core and a PCIE IP core are configured through a Vivado development environment, and serial data transmission and link certainty delay are achieved; and the PS part is designed to be an Ubuntu bare engine system, and can read PL processed data through DDR3, and perform SSD storage and remote transmission on the collected data.
4. The design method of the ZYNQ-based high-speed lidar data acquisition system with the remote data transmission function according to claim 1, wherein the PCIe Switch embedded expansion module is expanded into two paths of PCIEx8 interfaces for connecting the SSD and the WIFI module.
5. The method as claimed in claim 1, wherein the ZYNQ-based high-speed lidar data acquisition system with a remote data transmission function is designed to use a high-speed WIFI module to complete remote data transmission and realize dual-mode data storage.
6. The design method of the ZYNQ-based high-speed lidar data acquisition system with the function of remote data transmission according to claim 5, wherein the high-speed WIFI module is composed of a transceiving 5G antenna, a clock, a control center, a power control center, a memory, a UART interface and a PCIE interface.
7. The design method of the ZYNQ-based high-speed lidar data acquisition system with the function of remote data transmission according to claim 6 is characterized in that a new generation of WIFI6 standard is proposed, such as an Everest chip solution of Celeno corporation, Everest adopts 12x12BGA package and PCle-based interface, and a link rate of up to 4.8Gbps is generated by using an own AX.L subsystem of Celeno.
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| CN202010553733.3A CN111708001A (en) | 2020-06-17 | 2020-06-17 | Laser radar data acquisition system with remote data transmission function |
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| CN202010553733.3A CN111708001A (en) | 2020-06-17 | 2020-06-17 | Laser radar data acquisition system with remote data transmission function |
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Citations (5)
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|---|---|---|---|---|
| CN106095334A (en) * | 2016-06-03 | 2016-11-09 | 江苏科技大学 | A kind of high-speed data acquisition storage system based on FPGA |
| CN107395218A (en) * | 2017-07-10 | 2017-11-24 | 西安电子科技大学 | R-T unit and design method based on FPGA and radio frequency agile transceiver |
| CN107783199A (en) * | 2017-11-03 | 2018-03-09 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | A kind of novel radio ground penetrating radar system |
| CN110244276A (en) * | 2019-06-24 | 2019-09-17 | 成都航天科工微电子系统研究院有限公司 | A kind of biradical Forward-looking SAR echo admission method and device synchronous with motion parameter data |
| CN110308463A (en) * | 2019-07-05 | 2019-10-08 | 珠海光恒科技有限公司 | Windfinding radar system and its working method with data collecting card |
-
2020
- 2020-06-17 CN CN202010553733.3A patent/CN111708001A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106095334A (en) * | 2016-06-03 | 2016-11-09 | 江苏科技大学 | A kind of high-speed data acquisition storage system based on FPGA |
| CN107395218A (en) * | 2017-07-10 | 2017-11-24 | 西安电子科技大学 | R-T unit and design method based on FPGA and radio frequency agile transceiver |
| CN107783199A (en) * | 2017-11-03 | 2018-03-09 | 中国电波传播研究所（中国电子科技集团公司第二十二研究所） | A kind of novel radio ground penetrating radar system |
| CN110244276A (en) * | 2019-06-24 | 2019-09-17 | 成都航天科工微电子系统研究院有限公司 | A kind of biradical Forward-looking SAR echo admission method and device synchronous with motion parameter data |
| CN110308463A (en) * | 2019-07-05 | 2019-10-08 | 珠海光恒科技有限公司 | Windfinding radar system and its working method with data collecting card |
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