In April this year, Bosch Chassis Control System formally entered into cooperation with the three major domestic map suppliers to introduce the Bosch road features into the Chinese autopilot market. After eight months, the verification process covered most of the typical road conditions, including the Suzhou Central Ring Road , Central Tunnel and Yangcheng Lake Avenue (urban roads) .Through verification, the high-precision maps with Bosch road feature positioning function can be successfully integrated into the autonomous driving vehicles at present and the precise positioning is achieved. Testing and verification work is about to begin in early 2018 with business planners.
'The Bosch road feature landing in China is a milestone for the development of domestic autopilot and provides the best technical solution for precise positioning and route planning in all weather conditions.The research results of this collaboration are fully integrated with Bosch Innovation in radar technology and rich technical reserves for autonomous driving solutions as a whole, as well as the experience of domestic map makers in the acquisition and calibration of map data. "Dr. Chen Liming, President of Bosch Chassis Control Systems China, said:" Bosch will also The Bosch road features are open to more OEMs and map providers, allowing more vehicles to participate in crowdsourcing to enrich the entire high-precision ecosystem.
High robustness, high real-time road feature location function
The Bosch Roads feature is based on a camera and millimeter-wave radar sensor for reliable location services in a 24/7 environment. The millimeter-wave radar is highly robust compared to a single camera solution and can be used in most complex and harsh conditions such as rain , Snow, fog, backlight (such as sunrise and sunset), night, covered road (such as covered by leaves, snow, water), etc., without affecting the formation and positioning of high precision positioning layer. Farther away (long-range radar 0-250m), changes in positioning features ahead of the vehicle can be detected earlier to make up for the limitations of the camera and for a fuller response time for autonomous driving systems.
Bosch used the Global Positioning System (GNSS) to assist in the production of Bosch road signatures during the verification process. Positioning can be accomplished by other techniques such as inertial navigation (IMU) when it is not possible to receive GNSS signals (such as tunneling).
Power together to achieve real-time data and high-precision map integration
Bosch's collaboration with map providers focuses on high-resolution maps and positioning solutions, where the positioning solutions consist of innovative camera positioning services and unique millimeter-wave radar positioning services. Bosch Roads features connectivity through cloud servers The connected vehicle equipped with driver assistance system processes the road feature data generated by the millimeter wave radar and camera acquisition and uploads it to the cloud server to generate the Bosch road feature and synchronously calibrates with the map provider's positioning reference layer, Available for self-driving cars.
During the verification process, Bosch and the map supplier agreed on the calibration standards and the entire calibration process was tested and achieved good results with positioning accuracy up to 10 cm not only complementing existing high-resolution maps, The updated section information can also be updated, during which the average data upload size is approximately 15KB per kilometer (5KB for radar and 10KB for camera).
In the future, mass production vehicles equipped with Bosch cameras and millimeter-wave radar will enable crowdsourcing data collection, location feature extraction and upload to map providers' cloud servers meeting national security requirements to meet high Fine map on the timeliness and low cost needs.