TEL: +8618992836912
Categories
Exchange

+86 189 9283 6912
+86 29 88767352 
info@north-star-tech.com
2932654651
18992836912
20A, Ruixin Building, No. 25 Gaoxin Road, Xi'an

News
Home > News > Content
Inertial Measurement Unit Escorts For Automatic Driving Safety
Dec 10, 2018

The world's mainstream navigation uses GPS or China to develop the Beidou satellite positioning system, but these satellite navigation technologies also have their own shortcomings, such as signal differences, errors and low update frequency. Therefore, GPS alone cannot meet the positioning requirements of autonomous driving. A better device to make up for the lack of GPS. The Inertial Measurement Unit (IMU) has a higher update frequency and is immune to the signal, which is a good complement to GPS.


The inertial measurement unit is usually composed of a gyroscope, an accelerator and an algorithm processing unit. The measurement of acceleration and rotation angle produces a self-propelled trajectory, which has important application value in navigation. A system that combines a traditional IMU with an algorithm that combines information such as the body and GPS is called a universal IMU for autonomous driving.


In addition to detecting the surrounding environment, autonomous vehicles also need to be able to feel and respond to road conditions in a variety of climatic conditions. The inertial measurement unit integrates multi-axis accelerometers and gyroscopes with processing and calibration functions in one package. Together with on-board ADAS and satellite positioning inputs, the IMU provides accurate vehicle position and heading while suppressing shock and vibration during normal driving.

Many times the current GPS is not accurate or invalid. For example, in a tunnel, signals are often unavailable due to signal differences, or GPS signals in tall buildings in the city center are easily reflected and reflected. At this point, the IMU can enhance the navigation capabilities of the GPS. For example, when a lane recognition module fails, the road information sensed before the failure and the IMU's derivation of the vehicle track can continue to travel in the lane.


In addition, the GPS update frequency is too low (only 10Hz) is not enough to provide enough real-time location update, IMU update frequency can reach above 100Hz, can fully compensate for the lack of real-time GPS / IMU combination system through the global frequency and inertia update of up to 100Hz frequency The data can help the autopilot to complete the positioning. By integrating GPS with the IMU, the car can achieve accurate and real-time location updates.

Inertial Measurement Unit Escorts For Automatic Driving Safety

  • Exchange

    +86 189 9283 6912
    +86 29 88767352 
    info@north-star-tech.com
    2932654651
    18992836912
    20A, Ruixin Building, No. 25 Gaoxin Road, Xi'an

  • Categories
  • Copyright © Xi'an North Star M&C Tech. Co.,Ltd All Rights Reserved.