Collaborative correction system and method for accumulative error of intelligent vehicle auxiliary positioning system in gnss blind area
An auxiliary positioning system and accumulative error technology, applied in satellite radio beacon positioning system, transmission system, radio wave measurement system, etc., can solve the problems of system calculation error accumulation, etc., to ensure road traffic safety, ensure accuracy, prevent The effect of signal blocking
Active Publication Date: 2020-11-03
CHANGAN UNIV
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Problems solved by technology
Part of the reason is that the external parameters of the current auxiliary positioning system device have changed compared with the calibration due to the vibration of the vehicle during motion, and the other part is due to the accumulation of system calculation errors.
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[0034] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.
[0035] Such as figure 1 As shown, the collaborative correction system for accumulative errors of the GNSS blind zone intelligent vehicle assisted positioning system according to the present invention includes a vehicle-mounted RFID reader device, four RFID tag devices and an image acquisition device.
[0036] Such as image 3 As shown, the vehicle-mounted RFID reader device includes a wired communication interface module, a main data processing control module, an RFID reader and a ZigBee network node.
[0037] The wired communication interface module is used for wired communication with the auxiliary positioning system, for receiving the positioning information of the vehicle auxiliary positioning system, and for sending error correction instructions to the vehicle auxiliary positioning syst...
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The invention provides a cooperative correction system and method for accumulative errors of an intelligent vehicle auxiliary positioning system in a GNSS blind area, and the system and method comprises the steps: employing a vehicle-mounted auxiliary positioning system for positioning under the condition that a GNSS signal is interrupted; when the intelligent vehicle travels to the RFID sensing area, the image acquisition device performs image acquisition and performs positioning; enabling the vehicle-mounted RFID reader equipment to calculate and obtain vehicle position information based onRFID positioning according to the RFID signal intensity; subjecting vehicle position information based on image positioning and vehicle position information based on RFID positioning to fusion calculation; obtaining more accurate vehicle positioning information according to vehicle positioning information of a vehicle-mounted auxiliary positioning system, comparing the vehicle position information based on the vehicle-mounted auxiliary positioning system with the accurate vehicle positioning information to obtain an accumulative error of the vehicle-mounted auxiliary positioning system, obtaining an error correction instruction, and sending the error correction instruction to the vehicle-mounted auxiliary positioning system to perform error correction. According to the invention, the accumulated error generated by the auxiliary positioning system of the vehicle can be corrected.
Description
technical field [0001] The invention belongs to the field of intelligent transportation technology testing, and relates to a system and method for collaborative correction of cumulative errors of an intelligent vehicle auxiliary positioning system in a GNSS blind area. Background technique [0002] In recent years, cars have become an indispensable part of people's lives. However, with the rapid growth of car ownership, road traffic capacity is gradually saturated, which brings a series of problems while greatly facilitating human life, such as Traffic accidents, road congestion, etc. The emergence of the concept of Intelligent Transportation System (Intelligent Transportation System, ITS) provides a new idea for solving the above problems. It effectively integrates advanced information, data transmission, electronic sensing, control and computer technologies for the entire ground transportation. It is a real-time, accurate and efficient comprehensive transportation managem...
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IPC IPC(8): H04W4/029H04W4/80G01S19/23H04L29/08
Inventor 赵祥模吕洁印程鑫周经美惠飞徐志刚
Owner CHANGAN UNIV