Automotive anti-collision radar signal processing device by use of 77GHz millimeter waves

A radar signal processing and anti-collision technology, applied in the field of communication and radar, can solve the problem of not mentioning signal processing in detail, and achieve the effects of low power consumption, improved dynamic range, and guaranteed accuracy

Inactive Publication Date: 2011-11-23
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The 24GHz millimeter wave radar sensor is mainly used for rear view and side view, while the 77GHz millimeter wave radar is used for front view. °, the error of speed measurement is less than 0.5m/s, the working distance

Method used

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  • Automotive anti-collision radar signal processing device by use of 77GHz millimeter waves
  • Automotive anti-collision radar signal processing device by use of 77GHz millimeter waves

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Example Embodiment

[0030] Example

[0031] A 77GHz automobile anti-collision radar signal processing module, its structure is as follows figure 1 As shown, it includes radio frequency module, power supply module, FPGA module, 4 groups of receiving circuits, 2 groups of transmitting circuits, clock and RS232 interface module; each group of receiving circuits is composed of front receiving amplifier circuit, receiving filter module, rear receiving amplifier circuit , A / D conversion module, and each group of transmission circuits is composed of a D / A conversion module, a transmission attenuation circuit and a transmission filter circuit;

[0032] The operational amplifiers in the above-mentioned front receiving amplifier circuit, rear receiving amplifier circuit, front transmitting amplifier circuit and rear transmitting amplifier circuit are low-noise operational amplifiers AD8655 from ANALOG DEVICES;

[0033] The emission attenuation circuit attenuates the output voltage of the D / A conversion mo...

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Abstract

The invention relates to an automotive anti-collision radar signal processing device, particularly relates to an automotive anti-collision radar signal processing device by use of 77GHz millimeter waves, and belongs to the technical field of communication and radar. The device comprises a radio frequency module, a power supply module, an FPGA (Field Programmable Gate Array) module, four groups ofreceiving circuits, two groups of transmission circuits, a clock and an RS232 interface module, wherein each group of receiving circuit consists of a front receiving amplification circuit, a receiving filter module, a rear receiving amplification circuit and an A/D (analog to digital) conversion module; and each group of transmission circuit consists of a D/A (digital to analog) conversion module, a transmission attenuation circuit and a transmission filter circuit. The device has the advantages of concise circuit, small occupied vehicular space, low cost and low power consumption; a signal processing board can be used for effectively amplifying and filtering a signal received by a radar antenna; and a high-performance low-noise filter chip is adopted in secondary amplification, so that high-frequency noise is effectively reduced, the accuracy of sampled data is guaranteed, and the dynamic range of signals is effectively improved.

Description

technical field [0001] The invention relates to an automobile anti-collision radar signal processing device, in particular to a 77GHz millimeter-wave automobile anti-collision radar signal processing device, which belongs to the technical field of communication and radar. Background technique [0002] The purpose of the active protection system of the vehicle safety system is to prevent accidents. The vehicle's active anti-collision system is one of the important components of the vehicle safety system, and it is also one of the configurations that more than 50% of consumers value more when buying a car. NHTSA's research results show that the anti-collision warning system can reduce rear-end collision accidents by an average of 51%, and traffic accidents caused by changing lanes by an average of 47%. Therefore, active safety driving auxiliary devices such as the active anti-collision control system of automobiles can significantly reduce the driver's burden and judgment erro...

Claims

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Application Information

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IPC IPC(8): G01S7/02G01S13/93
Inventor 田黎育卢继华卜祥元安建平李安培张军武振
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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