introduction

On September 14, 2023, the State Administration of Radio and Television, the Ministry of Industry and Information Technology, and the State Administration for Market Regulation jointly issued a notice on further strengthening the management of in vehicle audio and video, clearly stating the importance of in vehicle broadcasting systems and deploying and promoting the installation of wireless broadcasting receiving systems in the automotive industry.

On September 18, 2024, the United States House of Representatives Energy and Commerce Committee passed the 2024 Vehicle Amplitude Modulation Broadcasting Act, which requires all vehicles manufactured and sold in the United States to retain AM (amplitude modulation broadcasting) functionality.

These measures have prompted us to deeply consider the necessity of standardizing in car broadcasting systems. What is the significance and value of formulating national standards for in car broadcasting systems in the current industry that is constantly changing and full of challenges in the future?

一、Improving the quality of in car broadcasting, national standards are urgently needed

Background case: On July 20, 2021, extremely heavy rainstorm hit Zhengzhou, Henan, resulting in urban waterlogging, traffic disruption, power and network paralysis. In this extreme situation, wireless broadcasting has become one of the only means of communication, and the in car broadcasting system has played an important role. However, some car owners have reported that the in car broadcasting signal is unstable. This incident highlights the importance of the quality and reliability of in car broadcasting systems.

Importance: The in car broadcasting system is not only an important channel for drivers and passengers to obtain information, but also a key component of the public safety system. Developing national standards can ensure that the technical indicators of the car broadcasting system meet the standards, improve product quality, ensure its reliable operation in emergency situations, effectively transmit information, and maintain public safety.

二、Promote international cooperation and enhance international competitiveness

Current situation analysis: In 2020, China's automobile exports exceeded 100 billion US dollars for the first time, but standard differences still remain an obstacle to entering certain markets. Establishing national standards that are in line with international standards can help enhance the international competitiveness of Chinese automotive products.

Strategic significance: By participating in the formulation of international standards, China can not only promote technological exchange and cooperation, but also enhance the recognition of China's automotive industry in the global market.

The following is the standard development process for in vehicle wireless broadcasting receiving systems in major countries and regions:

China: Currently in the public solicitation stage for opinions on the mandatory national standard revision plan project of "Vehicle Wireless Broadcasting Reception System", the technical content includes the functions, performance, vehicle environmental reliability, electromagnetic compatibility, etc. of terminals and antennas.

EU: In 2014, the 2014/53/EU Radio Equipment Directive was issued, requiring car radio and other equipment to comply with CE marking requirements. The EU Electronic Communications Regulation released in 2018 requires new cars to integrate Digital Audio Broadcasting (DAB) functionality.

Japan: ARIB-STD-B3 standard is developed by the Association of Automobile Manufacturers to guide industry design and development.

Middle East region: The United Arab Emirates and Saudi Arabia have respectively released their own technical standards for car radio receivers.

The United States is promoting the "AM Every Vehicle Act", which requires new cars to be equipped with mandatory AM broadcast receiving modules.

三、Adapt to industry changes and embrace future challenges

Technological trend: With the development of autonomous driving technology, in car broadcasting systems will integrate more intelligent and interconnected functions. For example, the in car infotainment system developed in collaboration between Google and Volvo in 2021 integrates multiple functions such as voice assistants and map navigation. The formulation of national standards not only ensures the smooth implementation of these new features, but also promotes interoperability between different brands and enhances user experience.

Future prospects: The formulation of national standards for in vehicle wireless broadcasting receiving systems has profound significance for improving product quality, promoting technological innovation, strengthening safety guarantees, and promoting international cooperation. This is a recognition of technological progress and a concrete manifestation of the importance placed on public safety.

四、Leiditech assists the car broadcasting system, providing it with protection and support

Shanghai Leimao will contribute professional expertise in the standardization of car broadcasting systems, especially in the design, testing, and application of protective devices, providing professional advice and support to ensure stable operation of the system in complex electromagnetic environments.

The following are typical protection cases provided by Lei Mao for different interfaces of automotive radio tuners.

Schematic diagram of car radio tuner

Shanghai Leimao provides typical protection cases for the USB, RS232, CAN, Ethernet, analog audio, speaker and other interfaces of automotive radio tuners. The comprehensive list is as follows, which can be directly applied to practical scenarios.

For more interface protection schemes, please follow the official account of Shanghai Leimao or contact EMC. Shanghai Leimao specializes in the research and sales of ESD, TVS，TSS，GDT，MOV，MOSFET，Zener， Inductors and other products. Lei Mao is committed to providing customers with high-quality products to protect circuits from electrostatic interference and voltage fluctuations. Lei Mao has an experienced R&D team that can provide personalized customized services according to customer needs and provide customers with the highest quality solutions.

Conclusion:

In the era of rapid technological development, car broadcasting systems may seem a bit retro, but they can play an irreplaceable role in critical moments. The establishment of national standards for in car broadcasting systems is not only the inheritance and development of traditional broadcasting technology, but also to build a defense line for information security for people in the uncertain future. It will lead the automotive industry to find a balance between innovation and stability, adding a reliable guarantee to our travel life. Let us look forward to the implementation of this standard and contribute to addressing industry changes and future challenges.