Modern automotive electronics have entered a new stage of fundamental advancement, spanning everything from the electronic components employed to the architecture of in-vehicle electronic systems. One of the most representative core components in this evolution is the smart sensor.

  In recent years, my country's automotive industry has experienced rapid growth and strong momentum. Consequently, some experts have predicted that the automotive industry could surpass the IT sector to become one of the most important pillar industries of the national economy. In reality, the growth of the automotive industry inevitably encompasses the growth of the IT sectors associated with it. For instance, while electronic products and technologies currently account for only about 10% to 15% of the value of FAW's products, the average figure for foreign vehicles is around 22%; for mid-to-high-end sedans, automotive electronics already exceed 30% of the total value—a proportion that is rising rapidly and is expected to reach 50% in the near future.

  Electronic information technology has become a driving force in the development of the next generation of automobiles; improvements in aspects such as powertrain performance, handling, safety, and comfort all depend on the seamless integration of mechanical systems and structures with electronic products and information technology. Experts in automotive engineering point out that the evolution of electronic technology has fundamentally transformed the concept of the automobile itself. This is one reason why the electronic information industry has recently focused unprecedented attention on automotive electronics. However, it must be noted that while certain in-vehicle electronic devices—such as audio and video equipment, communication and navigation systems, and mobile office or network systems—have undergone relatively little fundamental change, modern automotive electronics have entered a new stage of substantial advancement, spanning everything from the electronic components employed (including sensors, actuators, and microcircuits) to the architecture of the vehicle's electronic systems.Automotive electronics have undergone several stages of development: progressing from monitoring and control circuits built with discrete electronic components to independent, dedicated, semi-automatic, and automatic control systems utilizing electronic components or assemblies combined with microprocessors. We have now entered a new phase characterized by the use of high-speed buses—with at least five types currently in use—to unify data exchange among various electronic devices and systems, thereby enabling integrated and intelligent control.

  Microsensors and smart sensors are emerging technologies that have only recently begun to develop rapidly. In Chinese publications, the terminology currently in use remains somewhat imprecise; they are often referred to simply as "sensors" or vaguely categorized as "automotive semiconductor devices," while smart sensors (along with smart actuators and smart transmitters) are sometimes lumped together with microsystems and MEMS under the umbrella of MEMS (Micro-Electro-Mechanical Systems). This section outlines the definitions and technical scope of terms commonly found in recent technical literature from Europe and the United States.