Linear frequency-modulated continuous wave automobile anti-collision radar system and using method thereof

Abstract

The invention relates to a linear frequency-modulated continuous wave automobile anti-collision radar system and a using method thereof. An information processing platform of the radar system comprises a dual processor formed by a DSP and an FPGA. An information processing algorithm unit of the FPGA contains a space-time complexity rate distribution module. The DSP has an RAM and the FPGA has twoRAMs, so that an operating speed is improved. A serial port, a USB, an I / O, a PCI bus and a fiber interface are configured to the FPGA. An NIOS II can be embedded into the FPGA. And the FPGA is connected with a host computer having a human-computer interface; and the host computer can be connected with an alarm device and / or an automatic brake device and the like. According to the method providedin the invention, an information processing platform carries out calculation processing on real-time data to obtain real-time data of positions and speeds of front objects, and then the real-time data are displayed at an human-computer interface; a space-time complexity rate distribution method is employed to carry out m-t decomposition according to a space-time complexity rate Q for processing radar signal algorithms; and the various algorithms are respectively sent to an FPGA and a DSP for completion according to an upper threshold and a lower threshold. Therefore, advantages of the FPGA and the DSP are fully utilized; the work is done smoothly; the efficiency is high; images front the automobile can be reflected in real time; safe driving can be assisted; and anti-collision performancecan be well realized.

Description

(1) Technical field [0001] The invention relates to the technical field of automobile early warning, in particular to a linear frequency modulation continuous wave automobile anti-collision radar system and a using method. (2) Background technology [0002] With the increase of the number of automobiles, the safety of automobile driving has been paid more and more attention. The enhancement of automobile structure, the installation of airbags, the improvement of seat belts, etc. only solve the protection of automobiles when they are collided. In order to really solve the problem of collision avoidance, a radar system needs to be installed. [0003] The reversing anti-collision radar that is suitable for short-distance and low-speed situations on the market is relatively mature and has also been promoted. However, forward collision avoidance radar, which is used to detect obstacles in front of the car during normal driving, is still difficult to be practically applied. The...

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Problems solved by technology

However, there is still no mature algorithm to solve the allocation of DSP and FPGA, and it is impossible to fully utilize the resources of FPGA and DSP.

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