Safety problems in vehicles with adaptive cruise control system

Yadav, Arun Kumar; Szpytko, Janusz

doi:10.1515/jok-2017-0035

Cited by 12 publications

(8 citation statements)

References 6 publications

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“…ADAS using automotive radar sensors greatly improves safety by reducing accidents. [3][4][5][6] One of the most frequently fitted ADAS systems is the blind spot detection (BSD), which warns if a vehicle is in a blind spot area that cannot be identified by a side mirror when attempting to change lanes. The core of this device is two radar sensors located inside each corner of the rear bumper (see Figure 2).…”

Section: Introductionmentioning

confidence: 99%

Maintaining active safety performance through appropriate vehicle bumper refinishing: Case study for Korean minor damage repair standards

Lee

Kim

2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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The Korean government has established “minor damage repair standards” that require repair without replacement when vehicle bumpers can be repaired to reduce plastic bumper waste. However, when blind spot detection and lane change assist systems, active safety systems, are installed, there is a controversy over whether the standards can be applied to restore the minor damage bumper covers because the short-range radar sensor for them is located inside each corner of the rear bumper. Therefore, it is necessary to identify the difference between original and repair conditions to confirm the repair methods that can meet the government’s standards while maintaining the safety performance of the systems. The experiments were designed two sectors, most vehicle bumper cover repair methods were produced as test specimens which are used for static tests to compare with the new vehicle state, and based on the results, specimens needed field confirmation were prepared and dynamic tests were conducted. The microscopic performance difference of the safety systems according to the refinishing was determined by analyzing the dynamic test results using null-hypothesis significance testing and analysis of variance methods. The results of the tests showed that applying a filler to form the bumper surface does not cause performance problems if the radar signal transmission area of 10 m2 is avoided. In the case of paintwork on the radar signal area, two or three layers of paint did not show any difference from the manufacturer’s bumper, therefore paint layer scratches can be refinished up to twice. However, if metal-colored paint layers are three as a result of paintwork twice, the maximum detection angle performance is adversely affected. Through this study, new experimental methods were suggested for identifying the safety performance of advanced driver assistance systems when various repair methods are applied to the plastic bumper cover.

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Section: Introductionmentioning

confidence: 99%

Maintaining active safety performance through appropriate vehicle bumper refinishing: Case study for Korean minor damage repair standards

Lee

Kim

2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…It is estimated that over 40 000 people in the United States alone lost their lives in 2016 to road traffic accidents . It has also been estimated by Partners of Advanced Transit Highways (PATH) that road traffic accidents and their associated costs equal almost 3% of the world's gross domestic product . With 90% of accidents being attributed to human error, there is a need to equip vehicles with safety systems that provide the driver with crucial information and possibly take control of the vehicle to avoid an accident.…”

Section: Introductionmentioning

confidence: 99%

“…It has also been estimated by Partners of Advanced Transit Highways (PATH) that road traffic accidents and their associated costs equal almost 3% of the world's gross domestic product . With 90% of accidents being attributed to human error, there is a need to equip vehicles with safety systems that provide the driver with crucial information and possibly take control of the vehicle to avoid an accident. Blind spot detection (BSD), rear cross traffic alert (RCTA), lane keep assist, lane change assist, pedestrian detection, adaptive cruise control (ACC), and park assist are some of the safety and comfort systems that can make roads safer.…”

Section: Introductionmentioning

confidence: 99%

Full physics simulation of terrain‐adaptive 77 GHz automotive radar for early pedestrian detection

Chipengo

2019

Micro & Optical Tech Letters

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Fully autonomous vehicles and the need to improve road safety have led to increased demands on the reliability of various advanced driver assistance systems (ADAS). Automotive radar is a key component of ADAS as it adds both safety and comfort features in vehicles. A key challenge in developing automotive radar is demonstrating reliability especially in corner cases. Building and testing radar systems for corner cases is time‐consuming, costly, and impractical. Simulation is the only practical way of investigating the countless possible automotive radar corner cases. An interesting corner case is the reduction of radar returns due to sharp road bends. Specifically, crucial targets with low radar cross sections (RCS) such as pedestrians can become invisible to radar when driving around sharp road bends. In this article, a high fidelity, full physics‐based simulation of a 77 GHz automotive radar scene will be used to investigate this corner case. The dependence of radar returns on the position of an ego vehicle negotiating a sharp bend will be presented. Results from these simulations show a pedestrian disappearing from view at an approaching angle of 60∘ with a degradation of over 40 dB in pedestrian radar returns. Using results from this study, a terrain‐adaptive technique for improving radar target detection capabilities is proposed. This technique is shown to improve pedestrian radar returns by over 26 dB. Improved radar returns can help in early detection of pedestrians and other relevant targets. Early target detection can help reduce accidents while potentially saving pedestrian lives.

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“…While fully autonomous vehicles have emerged as a driving force behind the recent automotive industry ADAS revolution, an even more immediate goal is to make today's roads safer. Surveys show that 90% of accidents are due to human errors [1]. Partners of Advanced Transit Highways (PATH) estimated that car accidents and their associated damages are almost 3% of the world's gross domestic products in cost [1].…”

Section: Introductionmentioning

confidence: 99%

“…Surveys show that 90% of accidents are due to human errors [1]. Partners of Advanced Transit Highways (PATH) estimated that car accidents and their associated damages are almost 3% of the world's gross domestic products in cost [1]. In 2016, 40 000 people in the United States alone and more than 1.25 million people worldwide lost their lives in car accidents [2].…”

Section: Introductionmentioning

confidence: 99%

From Antenna Design to High Fidelity, Full Physics Automotive Radar Sensor Corner Case Simulation

Chipengo

Krenz

Carpenter

2018

Modelling and Simulation in Engineering

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Advanced driver assistance systems (ADAS) have recently been thrust into the spotlight in the automotive industry as carmakers and technology companies pursue effective active safety systems and fully autonomous vehicles. Various sensors such as lidar (light detection and ranging), radar (radio detection and ranging), ultrasonic, and optical cameras are employed to provide situational awareness to vehicles in a highly dynamic environment. Radar has emerged as a primary sensor technology for both active/passive safety and comfort-advanced driver-assistance systems. Physically building and testing radar systems to demonstrate reliability is an expensive and time-consuming process. Simulation emerges as the most practical solution to designing and testing radar systems. This paper provides a complete, full physics simulation workflow for automotive radar using finite element method and asymptotic ray tracing electromagnetic solvers. The design and optimization of both transmitter and receiver antennas is presented. Antenna interaction with vehicle bumper and fascia is also investigated. A full physics-based radar scene corner case is modelled to obtain high-fidelity range-Doppler maps. Finally, this paper investigates the effects of inclined roads on late pedestrian detection and the effects of construction metal plate radar returns on false target identification. Possible solutions are suggested and validated. Results from this study show how pedestrian radar returns can be increased by over 16 dB for early detection along with a 27 dB reduction in road construction plate radar returns to suppress false target identification. Both solutions to the above corner cases can potentially save pedestrian lives and prevent future accidents.

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Safety problems in vehicles with adaptive cruise control system

Abstract: In today's world automotive industries are still putting efforts towards more autonomous vehicles (AVs

Cited by 12 publications

References 6 publications

Maintaining active safety performance through appropriate vehicle bumper refinishing: Case study for Korean minor damage repair standards

Maintaining active safety performance through appropriate vehicle bumper refinishing: Case study for Korean minor damage repair standards

Full physics simulation of terrain‐adaptive 77 GHz automotive radar for early pedestrian detection

From Antenna Design to High Fidelity, Full Physics Automotive Radar Sensor Corner Case Simulation

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