Browse Topic: Electronic equipment

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"Leveraging Python-CAN and UDS for Cost Effective Automotive ECU Re-Programming"2026-26-0543To be published on 01/16/2026
Electronics with Software plays a crucial role to realize innovations in automotive industry. Advancement in automotive features has been fast paced, with rising number of ECUs (Electronics Control Unit) architecture increasing the complexity and cost pressure. While ECUs have established themselves the core unit to process and control vehicle including diagnostics. Hence ECU programming is vital for every player contributing to automotive development. Programming of an ECU involves several files like Bootloader, Application and calibration files, which are programmed over CAN bus using few of the widely used licensed tool such as Vector’s V-Flash, INCA-Flash, FlashR, etc. Despite the existence of major tools several organizations look for alternatives due to the high cost involved with license and CAN Hardware dependencies of manufacturers. Throughout this research various programming tools and CAN hardware compatibility were evaluated in combination, including time to program. The
Khot, Shubham, Iqbal, MD Farhan, Anilkumar, Sandhya, Tavhare Sr, Sarika, Bose, Indranil
Thermal Management Techniques to Overcome Heating Challenges in Printed Circuit Boards2026-26-0377To be published on 01/16/2026
Nowadays, Printed Circuit Board (PCB) design is facing critical challenges like high heat dissipation, increased cost, densely populated components and reduced life span. In view of the above, present study is focused on temperature prediction, thermal management, and optimization of component allocation (e.g. mosfet) in PCB. Heat flow occurring from traces to different copper layers in the PCB can cause adverse effects such as thermal run away/PCB warpage. Here, transient thermal analysis is carried out in an in-house developed PCB which is placed inside a sheet metal enclosure. Initially, thermal prediction to explore thermal regimes in the PCB is performed with the help of a commercially available software Altair Simlab ElectroFlo 2024.1. Temperature across all the components of the PCB as well as at the enclosure is simulated which is found to be beneficial in identifying the critical hotspots. In addition to the above, thermal measurements are performed in the lab with the help of
Rajasekharan, Jayakrishnan, ML, SANKAR, prasad PhD, Suryanarayana
Single Radar: A Robust and Cost-Effective Solution for ADAS and Parking functionality2026-26-0049To be published on 01/16/2026
With rapid advancements in Autonomous Driving (AD) & Advanced Driver Assistance Systems (ADAS), numerous sensors are integrated in vehicles to achieve higher and reliable level of autonomy. Due to the growing number of sensors and its fusion creates complex architecture which causes challenges in calibration, cost, and system reliability. Considering the need for further ADAS advancements and addressing the challenges, this paper evaluates a novel solution called One Radar - a single radar system with a wide field of view enabled by advanced antenna design. Placing the One Radar at the rear of the vehicle eliminates the need for corner radars and ultrasonic sensors used for parking assistance. With rigorous real-world testing in different urban and low-speed scenarios, the One Radar solution showed comparable accuracy in object detection with warning and parking assistance to the conventional combination of corner radars and ultrasonic sensors. The simple single sensor-based
Anandan, Ram, Sharma, Akash
Integrated Powertrain Domain Controller Using Wide Band Gap Devices For EV Applications2026-26-0055To be published on 01/16/2026
The rapid evolution of electric vehicles (EVs) has amplified the demand for highly integrated, efficient, and intelligent powertrain architectures. In the current automotive landscape, EV powertrain systems are often composed of discrete ECUs such as the OBC, MCU, DC-DC Converter, PDU, and VCU, each operating in isolation. This fragmented approach adds wiring harness complexity, control latency, system inefficiency, and inflates costs making it harder for OEMs to scale operations, lower expenses, and accelerate time-to-market. This paper addresses the core issue of fragmented control architectures in EV powertrains by proposing an integrated domain controller-based solution for EV powertrain. The technical gap lies in the absence of a centralized intelligence capable of seamlessly managing and synchronizing the five key powertrain aggregates: OBC, MCU, DC-DC, PDU, and VCU under a unified software and hardware platform. This fragmentation leads to redundancy in computation, increased
Kumar, Mayank, Deosarkar, Pankaj, Inamdar, Sumer, Tayade, Nikhil
Advancing Automotive Radar Characterization: OTA HIL Testing for Enhanced ADAS Safety2026-26-0043To be published on 01/16/2026
The increasing demand for reliable Advanced Driver-Assistance Systems (ADAS) and autonomous driving technologies necessitates the precise validation of automotive radar sensors. Traditional on-road testing, while effective, presents challenges such as limited repeatability, high costs, and safety concerns. To address these limitations, this paper introduces an Over-the-Air (OTA) Hardware-in-the-Loop (HIL) methodology for radar characterization, providing a controlled and repeatable lab-based validation approach. This methodology enables dynamic testing of key radar parameters, including range estimation, angle of arrival measurement, Doppler velocity analysis, and object detection accuracy. The proposed setup supports diverse testing scenarios, such as variable target distances, relative speeds, multiple object simulation, and environmental effects, ensuring a comprehensive evaluation of radar behaviour under complex and safety-critical conditions. Through OTA testing, developers can
Jadhav, Tejas, Karle, Ujjwala, Paul, Harshit, SNV, Karthik
Multi-Physics Simulation and Reliability Analysis of Onboard EV Charger2026-26-0499To be published on 01/16/2026
The rapid advancement of electric vehicle (EV) technology has created a demand for reliable and Thermal - efficient electronic components for power electronics and control systems on printed circuit boards (PCBs). The research looks at the overall simulation and study of a PCB for Electric Vehicles, including how it handles heat, stress, and reliability in real working conditions like considering casing (Heat Sink) in which PCB is held, into the simulation. We have used numerical based methods (reliability), Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD) methods to simulate heat performance looking at steady-state and changing load profiles common in EV powertrains. We ran structural and thermal simulations to check the PCB's toughness against heat expansion and shaking loads often seen in cars. We also did a reliability check looking at heat cycling life for PCB components, and possible ways it could break to guess long-term toughness. The results show critical
kanbarkar, Suraj Omana, Deore, Uday, Patil, Nishikant, Nayak, Shibabrata
Experimental studies to understand the strain distribution on Printed Circuit Board under Thermal Cycling loading using Digital Image Correlation2026-26-0522To be published on 01/16/2026
This paper investigates to detect strain and displacement variations across a Printed Circuit Board Assembly under thermal cycling loading through Digital Image Correlation. Digital image correlation is a relatively new and significantly accurate technique for this kind of application. This is a full-field contactless optical measurement technique, that makes it considerably precise in measuring the strain distribution throughout the board as compared to other conventional techniques. The experimental set up uses a customized chamber made for such specific study wherein nitrogen is infused into the chamber to bring down the chamber temperature towards lower extreme at a faster rate. In this study thermo-mechanical properties of the board material i.e. Coefficient of Thermal Expansion, Glass Transition Temperature and Modulus of Elasticity have been analyzed. In addition, variations in strain in response to stepped temperature variations are also studied. Study concludes that impact on
Parashar, Rohit, Panigrahi, Santha, Jena, Sourav
A Novel Design of energy efficient 4x4 MIMO Antenna for 4G LTE-A and 5G IOT Communications2026-26-0371To be published on 01/16/2026
This paper presents the design and analysis of a low-profile monopole antenna with a Multiple-Input-Multiple Output (MIMO) configuration, optimized for requirements of modern wireless communication systems. The proposed antenna consists of staircase-like rectangular patches with a stub to enhance bandwidth. Printed on Rogers RT Duroid 5880 substrate, the antenna covers a compact size of 96 x 96 mm2, making it suitable for integration into space-constrained devices. Operating within the frequency range of 2.13-4.2 GHz, the proposed antenna achieves an Envelope Coefficient Correlation (ECC) below 0.015, Mean Effective Gain (MEG) of less than -3 dB, Diversity Gain upto 10 dB, and Channel Capacity Loss (CCL) below 0.12 bps/Hz, thus making antenna suitable for LTE-A and 5G-IoT communications.
Gupta, Parul, Prasad, Anjay
MOSAIC-TARA: A Comprehensive TARA Methodology for Automotive Cybersecurity2026-26-0609To be published on 01/16/2026
Threat Analysis and Risk Assessment (TARA) is a continuous activity, acting as a foundation of cybersecurity analysis for electrical and electronics automotive products. Existing TARA methodologies in the automotive domain exhibits challenges due to redundant and manual processes, particularly in handling recurring common assets across Electronic Control Units (ECUs) and functional domains. Two primary approaches observed for performing TARA are Manual-Asset-Centric TARA and Catalogue-Driven TARA. Manual-Asset Centric TARA is constructed from scratch by manually identifying the assets, calculating risks by likelihood, and impact determination. Catalogue-Driven TARA utilizes the precompiled likelihood and impact against identified assets. Both approaches lack standardized and modular mechanisms for abstraction and reuse. This results in poor scalability, increased efforts, and difficulty in maintaining consistency across vehicle platforms. The proposed method in this research overcomes
Goyal, Yogendra, Sinha, Swati, Sutar, Swapnil, Jaisingh, Sanjay
Video 2 Scenario: A Novel Method to Generate Edge Case Traffic Scenarios from Dashcam Videos2026-26-0666To be published on 01/16/2026
This paper presents Video 2 Scenario, a systematic and cost-effective method to generate edge case scenarios derived from road events captured in dash camera videos. Current methods for obtaining real-world scenarios rely on supplementary sensor data like LiDAR, GPS and radar, which require expensive sensor setups for data collection. Other scenario generation methods rely on manual effort by human experts, which can be laborious and time-consuming. Our proposed methodology utilizes state-of-the-art deep learning models to extract vehicle trajectories, road layouts and other scenario-specific elements and reconstructs a scenario in the format of simulation scripts. The scripts are then refined by replaying the scenario multiple times in a simulation with attached virtual sensors to minimize the discrepancy between the subsequently obtained simulated video data and the original dash camera video data. The refined simulation scripts ensure that critical edge case scenarios are replicated
Ramalingam, Surya Prasath, Priyadarshi, Marut, Khan, Parvej, Kumar, Vaibhav, Pandey, Gaurav, Lohani, Bharat
Aircraft Lightning Test MethodsARP5416B (Current)11/26/2025
This document is one of a set covering the whole spectrum of aircraft interaction with lightning. This document is intended to describe how to conduct lightning direct effects tests and indirect system upset effects tests. Indirect effects upset and damage tolerance tests for individual equipment items are addressed in DO-160/ED-14. Documents relating to other aspects of the certification process, including definition of the lightning environment, zoning, and indirect effects certification are listed in Section 2. This document presents test techniques for simulated lightning testing of aircraft and the associated systems. This document does not include design criteria nor does it specify which items should or should not be tested. Acceptable levels of damage and/or pass/fail criteria for the qualification tests must be approved by the cognizant certification authority for each particular case. When lightning tests are a part of a certification plan, the test methods described herein
AE-2 Lightning Committee
Guidelines for Specifying LVDTs and RVDTsARP5554 (Current)11/26/2025
As per Committee/Henry E. Harschburger recommendations
A-6B1 Hydraulic Servo Actuation Committee
Verifying large alternate product code for an JA GV document - JA1124XXJA1224XX/NEW/00000000000000000001_202511 (Current)11/24/2025
Verifying large alternate product code for an JA GV document - JA1124XX
Active Safety Systems Standards Committee
Effect of Mesopore Structure of Carbon Gel on Improving the Capacity of Electric Double-Layer Capacitors2024-32-002604/18/2025
Electric double-layer capacitors (EDLCs) store charge by adsorbing ions at the electrode-electrolyte interface, offering fast charge/discharge rates, high power density, minimal heat generation, and long cycle life. These characteristics make EDLCs ideal for memory backup in electronic devices and power assistance in electric and hybrid vehicles. However, their energy density is lower than that of batteries, necessitating improvements in electrical capacity and potential. Traditionally, activated carbon with a high specific surface area has been used, but recent research focuses on mesoporous carbon materials for better ion diffusion. This study uses resorcinol-formaldehyde-carbon cryogel (RFCC) with mesopores and organic electrolytes with a wider electrochemical window. Various RFCCs with different pore sizes were synthesized and evaluated. Comprehensive investigations into the pore structures and surface properties of both synthesized carbon gels and commercial mesoporous materials
Cheng, Zairan, Okamura, Tsubasa, Ohnishi, Yuto, Nakagawa, Kiyoharu
Traction Voltage Level in Two-Wheelers: Considerations on Safety and Performance2024-32-006204/18/2025
Most electric 2-wheelers on the market today seek to replace combustion engine vehicles from 50cc to 150cc which equates to an electric motor power between 2 and 12 kW. The traction voltage level of these vehicles is mostly between 44V and 96V. However, the actual choice of voltage on a specific vehicle seems to be arbitrary and higher voltage does not necessarily correlate with higher motor power. This paper seeks to highlight considerations and tradeoffs which feed the choice of traction voltage levels. Important criteria are electrical safety standards and their impact on vehicle electrical architecture, the performance and availability of key electronics parts such as capacitors, MOSFETs, and gate drivers, while also highlighting functional safety aspects. This paper shows by a comprehensive analysis of the motor drive that for the vehicle class mentioned above the traction voltage level can be kept below 60V without any performance impact, while also ensuring electrical and
Schmitt, Stefan
IAQG-03282025-1 IAQG-03282025-1 (Current)04/02/2025
IAQG-03282025-1
IAQG-1 Standards Committee
How Will TSN Ethernet Impact the Future of Embedded Computing for Aerospace and Defense Applications?25AERP03_0603/01/2025
Time Sensitive Networking (TSN) Ethernet is a real-time networking capability that is being developed by a growing number of embedded computing companies for the earliest stages of adoption by aerospace and defense manufacturers and their suppliers. According to the Institute of Electrical and Electronics Engineers (IEEE) TSN working group, it is a set of standards that provides deterministic connectivity within IEEE 802-aligned networks. Nigel Forrester is the Director of Product Strategy for Concurrent Technologies, a UK-based provider of high performance embedded computing solutions for aerospace, defense and many other industries. Check out our interview with Forrester about the potential impact of TSN Ethernet on new and legacy aerospace and defense applications, and how it is being adopted by manufacturers and system integrators below.
Bosch consolidates computing talent in new mobility division21AUTP03_1101/27/2025
Bosch announced on January 7 during its CES 2021 conference event that it has created a new division labeled Cross-Domain Computing Solutions (CDCC). The CDCC division pools 17,000 of Bosch's automotive software and electronics associates to create a single source for software-intensive systems for future vehicle architectures. According to Bosch, the market for such systems is expected to grow 15% annually between now and 2030, and the organizational move is designed to extend the supplier's market-leading position. Bosch has assigned software, electrical and electronics engineers from the areas of driver assistance, automated driving, car multimedia, powertrain and body electronics to the new unit. “Bosch is an automotive electronics pioneer. Moreover, for quite some time now, it has also been a software company,” said Dr. Stefan Hartung, chairman of Bosch's Mobility Solutions business sector. “Only a company with wide-ranging electronics and software expertise will be in a position
Seredynski, Paul
Revolutionizing the Traffic Light21AVEP01_0501/27/2025
Two start-ups are using cameras, sensors and AI to enable more efficient vehicle flow through intersections. Every motorist has experienced the frustration of waiting at a red light when there is no traffic in sight. These days, countless household devices use sensors, cameras and connectivity to understand and respond to the world - so why do most traffic lights languish in the analog age, causing our vehicles to unnecessarily stop and idle? In a spring 2019 report, Guidehouse Insights forecast that just 7% of North America's signalized intersections would use so-called adaptive traffic-control technology in 2020. On a global level, that number was 2.3%.
Berman, Bradley
SAE TOMORROW TODAY: How AI Alignment Makes AVs Safer1349501/10/2025
In order for AVs to perform safely and reliably, we need to teach them the language of human preference and expectations--and accelerating AI alignment can do just that. Enter Kognic, the industry-leading annotation platform for sensor-fusion datasets (e.g., camera, radar, and LIDAR data). By helping companies gather, organize, and refine massive datasets used for training AI models, Kognic is helping to ensure that AD/ADAS perform reliably and meet safety standards--all while minimizing costs and optimizing teams. To learn more, we sat down with Daniel Langkilde, Co-Founder and CEO, to discuss why the future of autonomous driving depends on effectively managing AI-driven datasets and how Kognic is leading dataset management for safety-critical AI. We'd love to hear from you. Share your comments, questions and ideas for future topics and guests to podcast@sae.org. Don't forget to take a moment to follow SAE Tomorrow Today--a podcast where we discuss emerging technology and trends in
Hineman, Marcie
Making a Material Difference in Aerospace & Defense ElectronicsTBMG-5213712/01/2024
Researchers Use Ancient Japanese Art Method to Create Tunable AntennasTBMG-5212312/01/2024
SAE TOMORROW TODAY: Closing the Battery Manufacturing Knowledge Gap1347008/01/2024
Battery manufacturing in the United States is in its early days, however, more and more factories are ramping up to supply EVs, energy storage on the grid, and other markets. To speed up the learning curve, Voltaiq is using battery intelligence software to identify issues faster, thus decreasing scrap rate and reducing battery manufacturing ramp-up time for global OEMs, consumer electronics companies, battery manufacturers and energy storage developers and operators. Listen in as Roberto Baldwin, Sustainability Editor, SAE Sustainable Mobility Solutions, sits down with Tal Sholklapper, CEO and Co-founder of Voltaiq, to discuss the current state of battery manufacturing in the United States and how the company's battery quality analytics software can accelerate production. For more information on the evolution of sustainability, head on over to sustainablecareers.sae.org. There you can learn about how the joint venture between Rivian and Volkswagen will impact EV manufacturing in the
Hineman, Marcie
SAE TOMORROW TODAY UNPLUGGED: Can Autonomous Vehicles Eliminate Distracted Driving?1346507/10/2024
Distracted driving is an epidemic that shows no signs of slowing down. But autonomous vehicles could be the cure. As NHTSA gets ready to publish new data on distracted driving, hear from Grayson Brulte, Host of SAE Tomorrow Today, on why the addiction to our smart phones must be dealt with--and how AVs can help. Have your own thoughts on this topic? We'd love to hear from you! Share your comments, questions or ideas for future topics with Grayson on Twitter or send them to podcast@sae.org.
Hineman, Marcie
An Efficient and Cost-Effective Solution for Battery RecyclingTBMG-5084906/01/2024
Used lithium-ion batteries from cell phones, laptops, and a growing number of electric vehicles are piling up, but options for recycling them remain limited mostly to burning or chemically dissolving shredded batteries. The current state of the art methods can pose environmental challenges and be difficult to make economical at the industrial scale.
Vehicle Experience and Human Interaction: Vol. 1EPRCOMPV17202305/03/2024
Connected and autonomous vehicles (CAVs) and their productization are a major focus of the automotive and mobility industries as a whole. However, despite significant investments in this technology, CAVs are still at risk of collisions, particularly in unforeseen circumstances or “edge cases.” It is also critical to ensure that redundant environmental data are available to provide additional information for the autonomous driving software stack in case of emergencies. Additionally, vehicle-to-everything (V2X) technologies can be included in discussions on safer autonomous driving design. Recently, there has been a slight increase in interest in the use of responder-to-vehicle (R2V) technology for emergency vehicles, such as ambulances, fire trucks, and police cars. R2V technology allows for the exchange of information between different types of responder vehicles, including CAVs. It can be used in collision avoidance or emergency situations involving CAV responder vehicles. The
Abdul Hamid, Umar Zakir, Roth, Christian, Nickerson, Jeffrey, Lyytinen, Kalle, King, John Leslie
Bluetooth Profile Testing Using Packet Tracing in Automotive Domain2024-26-034901/16/2024
With the advancement of automotive industries, the need for wireless connectivity between vehicle and smartphone is increasing. To meet the demand for wireless connectivity, Bluetooth plays a vital role. Testing Bluetooth systems is challenging and complex when development cycles of the system involve multiple partners. The system under test must fulfil consumers expectation of Bluetooth functionality paired with their personal devices. Despite many advances and existence of a few reliable systems, hardware limitation, and lack of standardization in Bluetooth test system are some of the prolonged issues. Throughout the course, various capabilities and existing traditional Bluetooth testing system practice were researched, which majorly at a system level (Black box). The gap of such testing is the escape of defect which involves the interoperability of multiple profiles like AVRCP, HFP, and A2DP. This paper focuses on reliable testing approach which is based on packet level testing
Selokar, Ashish Kishor, Iqbal, MD, Tavhare, Sarika, Anilkumar, Sandhya
Comparative Study of Unsupervised Clustering Methods Used for RADAR Applications2024-26-002901/16/2024
Abstract- Driver safety has become an important aspect. To have driver safety RADAR is an essential part of vehicles hence RADAR has great significance in the automotive industry. The Radar sensor collects data from surroundings that may have unwanted data that may lead to improper detections of intended objects, so to have proper object detections it is needed to use clustering methods on the radar point cloud data. There are numerous unsupervised clustering methods used for RADAR applications. In this paper, the comparisons of different unsupervised algorithms such as K-Means Clustering, Hierarchical Clustering, KNN (k-nearest neighbors), Cluster Using the Gaussian Mixture Model, and DBSCAN are presented. All these clustering algorithms are evaluated based on various evaluation criteria such as the Silhouette coefficient, Davies Bouldin index, etc. Based on evaluations and comparative studies applications of the clustering algorithms are classified.
Prajapati, Miit, Payghan, Vaibhav, Chauhan, Abhisha, Nidubrolu, Kranthi
Study of Critical Vias Design Parameters for Power Electronics Thermal Management2024-26-031701/16/2024
With the advent of wide band gap semiconductor devices like SiC based MOSFETs/Diodes, there is a growing demand for utilizing electrical power instead of the conventional fuel-based power generation in both automotive and aerospace industry. In automotive/aerospace industry the focus on electrification has resulted in a need for sub-systems like inverters, power distribution units, motor controllers, DC-DC converters that actively utilize SiC based power electronics devices. To address the growing power density requirements for electronics in next generation product families, more efficient & reliable thermal management solution plays a critical role. The effective thermal management of the power electronics is also critical aspect to ensure overall system reliability. The conventional thermal management system (TMS) optimization targets heat sink/ cold plate design parameters like fin spacing, thickness, height etc. or sizing of the required cooling pump/fan. This paper focuses on
Bhardwaj, Divyanshu, Patil, Sachin, Datta, Sauradeep, Pawar, Sunny, Dougherty, Derek
A Comparison of Wire Bonding vs. Spot Welding vs. Soldering in the Prevention of Thermal Runaway in a Battery Pack2024-26-010901/16/2024
EVs are a fast-growing market and appear as a promising option against the high emission of gasoline and diesel vehicles. The growth in the EV market has been decent and a regular buyer is still skeptical due to fire incidents occurring with EVs. Complex electronics, improper thermal management, mechanical abuse, improper cell grading activities and control in production, lack of testing in a production plant, and of course, uneven degradation of cells can be one of the reasons this promising technology is facing thermal runaway and in turn, the wrath of the government and public alike. One of the reasons thermal runaway can be triggered after a cell catches fire is because a part of heat travels via busbars to the neighboring cells, as the busbars can conduct heat faster than the air. For the heat that is conducted, it is easily understandable that we need to break the electrical, as well as thermal conduction connection to the neighboring cells. This paper presents a comparison of
Pawar, Aniruddha, Khan, Faiz, Shah, Harsh, Malani, Shekhar
Thermal Analysis of Components and Traces on Printed Circuit Boards2024-26-027901/16/2024
High currents flowing through various traces of a printed circuit boards (PCB) causes thermal run away and PCB warpage due to the occurrence of high heat density. The present study discusses on a steady state thermal analysis performed on PCB. Thermal analysis allows PCB designer to quickly move and confirm the component’s placement by understanding the temperature plots of the PCB surface. A PCB particularly designed for automated manual transmission (AMT) application employed in Ashok Leyland trucks is used for this study. The board level simulations are performed with commercially available software Altair PollEx 2022.2. PollEx is a PCB level EDA (Electronic Design Automation) software suite used for design, analysis and manufacturing and thus helps in minimizing the development cycles. The simulations are performed for the worst case scenario and also for various application functions needs to be performed by the board. These simulations are time efficient as these are performed at
Rajasekharan, Jayakrishnan, Prasad, A. N. Suryanarayana, ML, Sankar. T
Vehicle diagnostics and Vehicle to Infrastructure Communication through Visible Light Communication2024-26-008201/16/2024
High Fidelity Communication has become a necessity in various sectors. Different wireless data transfer methods play a vital role in various far field and near-field communications. Wireless communication for transferring data through radio spectrum has been a continuous evolving trend, especially in Automotive Sector, with fleet monitoring, platooning and even connected vehicles. Some important parameters considered in selecting a wireless platform would be bandwidth, data transfer, speed, and security. Some interesting advantages of communication over the visible spectrum has led to the evolution of Light Fidelity. Implementation of Visible Light Communication (VLC) in the automotive field might enable safer driving conditions through vehicle-to-vehicle (V2V) and vehicle to Infrastructure (V2I) communication with high data transmission rates and efficient-bandwidth usage. The principle of VLC is based on “line of sight” data transmission through modulation of the light source. Highly
Ali, Rifat, N, Prem, Natarajan, Akshay, Kashi, Anitha
A Novel Method to Select Hyperparameters of The DBSCAN Algorithm for RADAR Applications2024-26-003001/16/2024
Abstract- As the automotive industry is coming up with various ADAS solutions, RADAR is playing an important role. There are many parameters concerning RADAR detections to acknowledge. Unsupervised Clustering methods are used for RADAR applications. DBSCAN clustering method which is widely used for RADAR applications. The existing clustering DBSCAN is not aligned very well with its hyperparameters such as epsilon (the radius within which each data point checks the density) and minimum points (minimum data points required within a circle to check for core point) for which a calibration is needed. In this paper, different methods to choose the hyperparameters of DBSCAN are compared and verified with different clustering evaluation criteria. A novel method to select hyperparameters of the DBSCAN algorithm is presented with the paper. For testing the given algorithm, ground truth data is collected, and the results are verified with MATLAB-Simulink. Keywords- (clustering, DBSCAN, DBSCAN
Payghan, Vaibhav Santosh, Prajapati, Miit, Chauhan, Abhisha
A Molecular-Sized, More Efficient Electronic SensorTBMG-4981301/01/2024
Australian researchers have developed a molecular-sized, more efficient version of a widely used electronic sensor, in a breakthrough that could bring widespread benefits.
Material Recognition Technology of Internal Loose Particles in Sealed Electronic Components Based on Random Forest01-17-02-000912/05/2023
Sealed electronic components are the basic components of aerospace equipment, but the issue of internal loose particles greatly increases the risk of aerospace equipment. Traditional material recognition technology has a low recognition rate and is difficult to be applied in practice. To address this issue, this article proposes transforming the problem of acquiring material information into the multi-category recognition problem. First, constructing an experimental platform for material recognition. Features for material identification are selected and extracted from the signals, forming a feature vector, and ultimately establishing material datasets. Then, the problem of material data imbalance is addressed through a newly designed direct artificial sample generation method. Finally, various identification algorithms are compared, and the optimal material identification model is integrated into the system for practical testing. The results show that the proposed material
Gao, Yajie, Wang, Guotao, Jiang, Aiping, Yan, Huizhen
Localisation of Ultra-short Sound Emissions from Automotive Components by Using the Sound Field Scanning Method2025-01-009205/05/2023
Design verification and quality control of automotive components require the analysis of the source location of ultra-short sound events, for instance the engaging event of an electromechanical clutch or the clicking noise of the aluminium frame of a passenger car seat under vibration. State-of-the-art acoustic cameras allow for a frame rate of about 100 acoustic images per second. Considering that most of the sound events introduced above can be far less than 10ms, an acoustic image generated at this rate resembles an hard-to-interpret overlay of multiple sources on the structure under test along with reflections from the surrounding test environment. This contribution introduces a novel method for visualizing impulse-like sound emissions from automotive components at 10x the frame rate of traditional acoustic cameras. A time resolution of less than 1ms eventually allows for the true localization of the initial and subsequent sound events as well as a clear separation of direct from
Rittenschober, Thomas
Characterize the Sound Field Generated from a Vehicle Horn by Pellicular Analysis2025-01-005805/05/2023
To predict the sound field produced by a vehicle horn requires a good source representation of it in the full vehicle model. This paper investigates the characterization of a physical vehicle horn by an inverse method called pellicular analysis. To implement this method, firstly an acoustic testing is performed to measure the sound pressure radiated from the horn at a certain number of microphone locations in a free field environment. Based on the geometry of a virtual horn, the locations of each microphone and measured sound pressure data, pellicular analysis is adopted to recover a set of vibration pattern of the virtual horn. The virtual horn and the recovered vibration information are then incorporated in a full vehicle numerical model to simulate its exterior sound field. The validity of this approach is confirmed by comparing the prediction for a horn in a production vehicle to the corresponding physical test which is required to meet the Brazilian regulation CONTRAN 764/2018.
Yang, Wenlong, MELO, ANDRE
Active Control of Engine Order Noise for Heavy-duty Trucks: Using the Genetic Algorithm for the Optimization of Error Microphone Arrangement2025-01-001305/05/2023
The arrangement of error microphones for a vehicle active noise control (ANC) system is no trivial work, especially for heavy-duty trucks due to the dilemma resulted from the large volume of the cab and the limited number of microphones accepted by most manufacturers in the auto industry. Most ANC developers resort to trial and error, which is not only a heavy workload given the amount of interested working conditions to be test, but also does not guarantee to yield the optimum noise cancellation performance. In this paper, the authors proposed an error microphone selection methodology using a genetic-algorithm (GA) -based mechanism. The target vehicle was a heavy-duty truck with a six-piston diesel engine, and two scenarios were particularly interested, i.e. driver & copilot and driver & one passenger sleeping on the berth. We first arranged eight microphones at different locations in the cab, five on the headrests, two on the B pillars and one at the head position of the sleeping
Wang PhD, Jian, Ling, Zihong, Zhang, Zhe, Cai, DeHua, lv, Xiao, Zhang, Ming, Gao, GuoRan
Excavator exterior noise contribution analysis using angle-based operational acoustic load synthesis.2025-01-006205/05/2023
Since earth moving machines (EMM) are subject to exterior noise (EN) regulations, OEMs need to develop mitigation solutions from an early design stage. It is challenging to predict solution effectiveness at early design stage. Excavators are distinct compared to other EMM as their upper frame rotate while keeping lower frame fixed. ISO 6395(2) or EC/2000/14(1) require EMMs to follow specific operating maneuvers where noise sources change their position, directivity, and speed along the operating cycle. These conditions pose challenges in performing noise contribution analysis as a function of angular position and operating condition. Authors successfully demonstrated Acoustic source quantification and contribution analysis for linearly moving EMMs. However, excavator pose data processing challenges due to angular motion. This work demonstrates the use of frequency domain ASQ for operational acoustic source quantification and use of frequency domain virtual prototype sub structuring
Vesikar, Prasad Balkrishna, Haynes, Timothy, Aquino Arriaga, Adrian Antonio, Drabison II, John, Chaduvula, Prasanna
Comprehensive EV Sound Design project from Marketing Requirements to Series2025-01-001805/05/2023
This paper presents the results of a project to design new comprehensive sound sets for several electric vehicle models having each specific branding expectations. This was achieved thanks to a close collaboration between one major Chinese electric vehicle manufacturer and an acoustic software provider, relying on shared experience, knowledge, and tools to meet the initial requirements set. Firstly, a scenarized journey and brand-related symbolism were defined and served as a basis for creating meaningful sketches of sound design in a cross-team effort (designers, NVH, production, audio system, etc.). Various sound functions were considered for exterior sounds, such as AVAS, and interior sounds, such as ambiance, HMI, and alarms. A special care was dedicated to the so-called Active Sound Design aiming at providing speed and acceleration feedback to the driver, in the absence of a clearly audible engine noise. A listening test was then conducted in order to assess how the proposed
LI, Yanhao, Minard, Antoine, Boussard, Patrick, Zhang, Charles
A novel framework for accelerating EDU NVH simulation using scalable transfer functions and evaluating manufacturing defects through space order excitation2025-01-004405/05/2023
In the ultra-luxury vehicle segment, achieving optimal NVH (Noise, Vibration, and Harshness) performance across a growing range of load cases in drive and regeneration conditions presents significant engineering challenges. As the complexity of load cases escalates with varying torque ripple and transmission errors, traditional time and frequency-domain simulations become computationally inefficient. To address these challenges, an in-house software framework that employs Noise Transfer Functions (NTFs) and Vibration Transfer Functions (VTFs) is developed. The system’s dynamic response is computed once and scaled to various excitation sources, which includes radial and tangential forces derived from EMAG simulations, and gear forces derived from MBS simulation. Speed sweep simulation is performed to systematically characterize the RPM range, allowing for precise scaling of the transfer function against the original forces to obtain the responses in mounts or microphones. The resulting
Sureshkumar, Sanjai, Shaw, Stephen, Qureshi, Manucher, Duclaux de L'Estoille, Nicolas
A Study on the Subwoofer Rattle Noise Analysis and System Target Setting2025-01-009005/05/2023
Rattle noise from electrical sound systems is becoming one of the prominent issues for automakers as it directly affects the perception of customers about vehicle quality. Recent times, quality sound system is prerequisite for automotive passenger vehicles. And, in the whole sound systems subwoofer forms dominant part of sound output. However, sub-woofer rattle noise problem sometimes occurs in small and midsize SUV. Generally, sub woofers are located inside rear quarter area (back side of the quarter panel), due to the limitation in the available space. Mainly rattle is noise resulting from physical impact of two parts due to vibrations when relative displacement is bigger than gap of two parts, it occurred in 50-100Hz, which is main excitation range of sub-woofer. In this study, we analyze the sub-woofer structural vibration analysis for five sample vehicles based on the test and correlation. However, the present sub-woofer system model has limitation in determining the level of this
Thota, Jagadeesh, Choi, Seungchan, Park, Jong-Suh
Immersion Cooling for Power Electronics2022-28-044611/09/2022
The ability to precisely control electrical voltages on a large scale has made possible many efficient, powerful innovations, from high-speed electric trains to wind turbines to electric drive motors for everything from heavy earthmoving equipment to personal electric vehicles (EVs). But the equipment that manages this process — including power inverters, thyristors and variable-speed drives — requires high-performance power electronics cooling. As temperatures rise, the efficiency, reliability, and life spans of these devices drop, and the power electronics inside HEVs and EVs are no exception. Advancements in power electronic thermal management technologies will enable next generation automotive to fulfill increasingly demanding mission objectives. DC-DC converter and inverter systems slated for higher performances, reliable and sustainable applications. Even with very high efficiencies, the components of these systems produce kilowatts of power loss in the form of heat. The current
Sahoo, Pranati
Wearables: Gold Sensor Performs On-Body Chemical AnalysisTBMG-4695611/01/2022
682 Guidance for Air Transport Service Bulletins (TEST POPST CT and APPSEARCH)ARINC682 (Current)09/21/2022
This document provides industry guidance to supplement ATA standards and airframe requirements, addressing gaps and vague areas to move suppliers/vendors and airframers toward a common standard for format and wording in Vendor Service Bulletins (VSB) for Air Transport components. This document supplements the VSB guidance of iSpec 2200, providing clarity of requirements and resulting in a common standard wording and format of VSBs from all suppliers on all aircraft types. The guidance in this document is intended to be applied to VSBs created and released subsequent to the release of the guidance document and will not require the retroactive update of VSBs released prior to the creation and release of the guidance.
Surface Mount Technology for PCB Assembly Use Case and SMT in Healthcare SystemsTBMG-4645809/01/2022
Surface mount technology (SMT) is widely accepted as the ideal process for electronic products that are compact, lightweight, and high speed. Both through-hole and surface mount assembly techniques have their own merits and demerits. To understand the wide usage of SMT in printed circuit board (PCB) assembly, this article discusses the SMT process, benefits of SMT assembly, major differences compared with the through-hole technology (THT) method, and suitable applications in the electronics industry.
Why Cleanroom Assembly of Plastic Medical and Electronic Devices Requires Ultrasonic Welding TechnologyTBMG-4646409/01/2022
For years, ultrasonic welding has been used in cleanrooms where plastic components are assembled to complete medical and electronic devices. That is unlikely to change. What is changing, however —rapidly — is the sophistication and complexity of these products and the level of precision and quality required to complete their assembly.
Researchers Develop Rapid Lab-on-a-Chip for Cancer, COVID DiagnosticsTBMG-4646209/01/2022
A research center based at the University of Kansas that develops rapid next-generation tests for a host of human ailments like cancer, stroke, and COVID-19 recently earned $6.6 million in continued funding over the next five years from the National Institutes of Health’s National Institute of Biomedical Imaging and Bioengineering (NIBIB) as a National Biotechnology Resource (P41) Center.
NASA Goddard Space Communications Workshop PreviewTBMG-4641108/18/2022
Since the first satellite launched over six decades ago, spacecraft have relied on radio waves to communicate with Earth. But radio has its limitations. With more and more satellites now in space and entry of commercial players as well as the growing demand for space services, the field of space communications is primed for disruption.
Smart Molecules Act as Computer TransistorsTBMG-4597706/01/2022
Researchers have discovered a single-molecule switch that can act like a transistor and store binary information such as the 1s and 0s used in classical computing. The molecule is around five square nanometers in size — more than one billion of them would fit onto the cross-section of a human hair. The researchers believe that molecules like the ones they have discovered could offer information density of around 250 terabits per square inch, which is around 100 times the storage density of current hard drives.
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