The development trend in the mobility sector is rapidly changing toward eco-friendliness and electrification. Accordingly, it is expected that it will not be easy to resolve electromagnetic interference using the traditional EMC approach in the automobile industry.

2023 EMC FEST was held at Songdo IoT Technology Support Center on the 19th. At this seminar, hosted by the Radio Promotion Association of Korea (RAPA), presentations were given on the first day focusing on EMC improvements and considerations in mobility across water, ground, and air, and sessions were held on the second day on EMC in semiconductor packaging and PCB design.

In his welcoming speech, RAPA Executive Vice President Song Jeong-su said, “I hope that EMC FEST will serve as an opportunity to exchange international standard technology information related to radio waves and contribute to the development of the domestic radio industry,” adding, “The growth of cutting-edge information and communication technologies will be a breakthrough for overcoming the economic recession.”

Seo Sung-il, president of the National Radio Research Agency, listed the following as pressing tasks: △ensuring national safety in a complex radio environment including robots and drones, △supporting global market dominance by attempting international standardization in the EMC and radio fields, and △globalization of the domestic electromagnetic wave and EMC fields and entry into the global market, adding, “I expect that this event will be an opportunity to solve pressing tasks for the radio-based industry.”

The first session covered technology development and standardization trends related to mobility, as well as EMC considerations. Team Leader Bong-Yeol Choi of KOMERI presented EMC trends and cases for eco-friendly smart ship environments, and Team Leader Hyuk Lee of KATECH presented EMC for V2X.

■ Eco-friendly ship electrification and electronics, “Equipment and evaluation foundation must be established”

Team Leader Choi Bong-yeol recently explained the market trends in line with the rise of eco-friendly ships and the commercialization of autonomous ships, and suggested ways to improve EMC in the eco-friendly ship environment. Team Leader Choi raised his voice and said, “Currently, Northern Europe is leading the world in eco-friendly smart ships, and the United States and Japan are leading in the equipment industry.”

Team Leader Choi said, “As the number of propulsion systems related to electricity and electronics, such as electric propulsion systems, fuel cell propulsion systems, hydrogen fuel, and hybrids, increases, the need in terms of EMC is expected to expand.”

In Korea, too, there is an urgent need to develop equipment and establish an evaluation foundation that can respond to this trend. Team Leader Choi expressed concern, saying, “Domestic countries are also developing standards to respond to next-generation technologies such as ship batteries and autonomous navigation guidelines, but if you look closely, the standards are being established with a focus on performance, and consideration of EMC is limited to referencing existing standards.”

As ships and equipment required for ships are moving from the mechanized era to the electrical and electronic era, it is necessary to establish a testing and verification facility that can evaluate related equipment. It will cost at least 20 billion won to build a chamber that can verify electromagnetic interference in ships and large equipment.

Team Leader Choi mentioned the need to invest in a chamber capable of testing large and high-power EUTs, and suggested, “We need to quickly establish a foundation for developing equipment and evaluating them to respond to changes.”

■ V2X, BSM mandatory installation legislation planned… “Automobiles, communication EMC must be considered”

BSM (Basic Safety Message) is a standard for exchanging data collected and generated from vehicle systems in a vehicle-to-vehicle (V2V) environment, and can receive information such as the location, speed, and direction of the other vehicle (RV). It seems that transmitting and receiving such BSM can be implemented by installing an OBU (On Board Unit), which is a terminal installed in the vehicle, or linking with a smartphone.

The Korea Automobile Research Institute stated that in preparation for the popularization of OBU in V2V, the following are necessary: △OBU installation obligations △OBU suitability assessment and certification. Team leader Lee Hyuk said, “BSM must be transmitted when a vehicle is driving, and its mandatory installation will be legislated, and mandatory installation is expected to begin in 2026.”

Information that can be sent and received via BSM includes the following: △Excel pedal pressure, △brake pedal pressure, △car wheel/wheel angle, and △car size (large/small).

Team leader Lee Hyuk said, “BSM legislation will make it mandatory to transmit unconditionally in all countries, including the US and Europe, and the information received will be used as a service for guiding drivers and providing safe driving services through NCAP.”

From an EMC perspective, the BSM of V2X is expected to have characteristic requirements for Tx evaluation, including △wireless transmission performance △wireless reception performance △V2V application performance △message format standard compliance △message integrity (including data validity) △protocol stack standard compliance △normal registration, etc.

Team Leader Lee Hyuk said, “This year, Shanghai Automotive released the R7 as the first vehicle equipped with V2X applications, and no vehicle has been released in Korea yet.” He added, “In automobile manufacturing, EMC should be evaluated using indicators that include various channels, power, Rx·Tx, and other items that were not previously considered in the communications field.”

Meanwhile, the 2023 e4ds Analog Day hosted by e4ds will present sessions on EMI/EMC countermeasure design technology for future electric vehicles and electrical components under the theme of EMX (Electromagnetic Everything) for future vehicle electrical components at the Korea Conference Center on November 28. For more information, please visit the CONFERENCE page on the e4ds news homepage.