The past month or so has been quite a leap forward for domestic road safety to a certain extent. 1 September 2020, the relevant departments of the National Road Traffic Supervision Department fully implemented the "Technical Safety Conditions for Operating Goods Vehicles", which requires that "tractor-trailers should be equipped with lane departure alarm function and forward collision warning function". The implementation of this regulation means that safety equipment has been added for truck driving, which fully demonstrates that the state attaches great importance to the road safety of commercial vehicles, and the active safety of vehicles is gradually aligned with the high standard of safety, reliability and intelligence.
According to the latest statistics, commercial vehicle ownership for motor vehicle ownership of 7.8%, but is one of the more frequent road traffic accidents transport; in terms of the number of deaths in traffic accidents, the number of deaths in truck accidents up to 22%. As a logistics country, the installation of dual warning systems for lane departure warning (LDW) and forward collision warning (FCW) on trucks is not only a matter of policy, but also a matter of practicality.
LDW and FCW
Lane Departure Warning (LDW) through image data processing to identify the lane tracking, when the vehicle unconsciously deviates from the lane, the system will issue sound and light warnings, so as to avoid vehicle deviation from the lane derailment. Vehicle Forward Collision Warning (FCW) is mainly used to judge the distance, bearing and relative speed between the vehicle and the vehicle in front through the distance monitoring of the obstacles in front, and warn the driver when there is a potential collision danger. It is worth mentioning that the vehicle forward collision warning system needs to be matched with the depth of the vehicle control system, and the system installation is completed before the vehicle leaves the factory for higher safety.
FCW
FCW, as one of the main modules of the intelligent transport system, inputs the environmental information around the vehicle through sensors into the corresponding system module for judgement, and gives early warning to the driver or provides emergency protection. In this process, positioning, radar, vision and other sensors collaborate and fuse to be able to input the collected environmental data in the form of images, point clouds, etc., and through the algorithm's extraction, processing and fusion, to further form a complete map of the front vehicle's driving situation, providing a basis for driving behaviour decision-making.
Currently, the sensor solutions applied to FCW include LiDAR, millimetre wave radar, camera, ultrasonic sensors and so on. Compared with other sensors, "ultrasonic radar + camera" is a low-cost solution with better warning effect. Ultrasonic radar general weather resistance range is -40 ℃ ~ +85 ℃, can withstand most of the bad weather, and the camera long-distance image recognition to form a functional complementary advantages.
When the vehicle is moving, the ultrasonic sensors continuously measure, and when the relative position of the vehicle and the obstacle in front of it is less than the set safety distance, the vehicle control system makes judgement based on the actual distance detected by the sensors, and sends out an alarm to remind the driver to slow down the brakes.
As a provider of the first batch of ultrasonic sensors supplied to front-loading car manufacturers in China, Audiowell always pays attention to the dynamics and development of the automotive industry. As early as March 2019, when the Technical Safety Conditions for Operating Goods Vehicles was released, the company had already laid out its R&D team to develop and manufacture ultrasonic sensor parts that meet the OEM-level quality standards of vehicle manufacturers, based on the current common specifications for commercial vehicles, and by combining various road factors such as weather, road surface, traffic conditions, and other related conditions such as vehicle inertia, reaction distance, and emergency response time.
- Measuring distance 250~5000mm
- With digital signal output (LIN/IO) and self-test signal function.
- Good weather resistance, stability, and anti-interference
At present, Audiowell's digital radar sensors applied in vehicle forward collision warning system have been realised in batch production and are used in the domestic first-tier commercial vehicle brands. Ltd. has accumulated more than 20 years of R & D and production experience in the automotive sensor industry, and is willing to do intelligent travelling for the driver's "eyes", to obtain accurate warning signals to provide sharp, fast and professional judgement data, and constantly deepen the scientific and technological innovation, strive for perfection, and adhere to the responsibility of escorting the road safety.
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