Calculation method for real-time no-lag positioning equipment and no-lag position of vehicle
A positioning device and lag-free technology, which is applied in the field of global positioning technology and intelligent transportation, can solve the problems of car navigation and positioning lag, and achieve the effects of easy promotion and use, real-time lag-free positioning, and reduced time loss
Active Publication Date: 2015-07-08
TSINGHUA UNIV
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[0003] The purpose of the present invention is to provide a real-time non-lag vehicle positioning device and a non-lag position calculation method for the problem of lagging positioning of the existing vehicle navigation mentioned in the above background technology.
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[0019] The present invention will be further described below in conjunction with the accompanying drawings.
[0020] exist figure 1 Among them, the vehicle ABS (anti-lock braking system) has four wheel speed sensors, which are the first wheel speed sensor 1, the second wheel speed sensor 2, the third wheel speed sensor 3, and the fourth wheel speed sensor 4; ECU (Electronic control unit) is the control unit of ABS, GPS is the global positioning system module, and VNCU is the vehicle navigation control unit, which is composed of power input terminal, data output terminal and storage control module. The first wheel speed sensor 1, the second wheel speed sensor 2, the third wheel speed sensor 3, and the fourth wheel speed sensor 4 are respectively connected to the ECU, the ECU is connected to the VNCU, and the GPS is connected to the VNCU. The ECU collects the time series of vehicle wheel speeds through the first wheel speed sensor 1, the second wheel speed sensor 2, the third w...
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The invention discloses a calculation method for real-time no-lag positioning equipment and a no-lag position of a vehicle, which belongs to the technical field of global positioning technology and intelligent traffic. The equipment comprises a GPS (Global Positioning System) module, a vehicle ABS (Anti-lock Brake System) and a navigation control unit, wherein the GPS module and the vehicle ABS are connected with the navigation control unit respectively; the navigation control unit consists of a power supply input end, a data output end and a storage control unit; and the power supply input end and the data output end are connected with the storage control module respectively. The GPS positioning no-lag time is analyzed and calculated by performing correlation analysis according to speed information output by a GPS and wheel speed information output by the vehicle ABS, and the displacement of the vehicle within GPS positioning no-lag time is calculated to obtain the real-time no-lag position of the vehicle finally. According to the method, the problem of GPS positioning lag of a vehicle-mounted navigator is solved, the position of the vehicle can be determined in real time in a no-lag way, and correct path navigation is ensured.
Description
technical field [0001] The invention belongs to the field of global positioning technology and intelligent transportation technology, and in particular relates to a real-time non-lag vehicle positioning device and a calculation method for a non-lag position, which can overcome the problem of the current vehicle navigation GPS positioning lag and realize vehicle real-time non-lag positioning. Background technique [0002] In recent years, the number of vehicles has increased rapidly, and the urban road network structure has become increasingly complex. More and more vehicles are equipped with on-board navigation. Based on vehicle positioning technology, vehicle navigation provides route navigation services for vehicle drivers and passengers, which brings great convenience to the travel of the majority of drivers and passengers. The commonly used positioning device is the vehicle navigation GPS, which can calculate and determine the geographical location of the vehicle in most...
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IPC IPC(8): G01S19/40
Inventor 姚丹亚李博文蒋凤成
Owner TSINGHUA UNIV