Design Of Analogical Board And Display And Control Interface For Multi-beam Lidar System

Lidar(Laser Radar)is developed using remote sensing technology.It is product of the combination of computer science and traditional radar technology and modern laser technology.The laser beam is used to be the signal source.And the laser has the characteristics of high brightness,high directivity and high frequency.Therefore,the Lidar has a series of unique advantages,such as the high resolution about the image and antiinterference ability.It have smaller size and weight than the traditional radar,and can be used more easily.Multi-beam Lidar System is mainly used for measuring the height of vegetation and surveying air quality.This paper focuses on the design of analogical board and display and control interface with Multi-beam Lidar System.The analogical board is mainly used to the order control of the analogical system,the inter-board sampling data transmission,and the data communication between the system hardware and the PC.The display and control interface faces the operators directly,and achieve the control of system function,the communication with data and signal display and other operations by the Gigabit Ethernet interface,the PCIe interface and the serial port.The development and application of Lidar technology are introduced at first.Then the Multibeam Lidar System is presented from the overall aspect,including the system architecture and the technical requirements.Some design are discussed about the analogical board and the display and control interface.And taking about the relevant technology used in the process of realization.Secondly,the analysis requirements is performed for the functions of the analogical board.Introduce the design and implementation process of the hardware board.The selection of chips of FPGA,high-speed DAC and clock chip are introduced according to the board performance.And then it emphasizes on the design and implementation of power module,clock module,DAC module and Gigabit Ethernet module of the board in detail.At last,detect the data transfer rate of interfaces and evaluate board performance.Then,the requirements of the user and system for the display and control software are analyzed.The overall framework is design and different functions are modularized.Achieve the functionality system module through multithreading technology.Such as send and receive order,transmit data and display the real-time waveform.Verification of the working stability and function completeness of the display and control software is done via the functional debugging and performance testing.Finally,the contents of this paper are summarized,and the improvement scheme is put forward according to the problems encountered in the design process.