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Since the invention of the sensor in the 1860s, more than 150 years have passed. Today, with the rapid growth of the Internet of Things (IoT) industry, there is an increasing demand for advanced and more sophisticated sensor technologies. Sensors are now considered a key enabler of IoT, driving innovation across industries. In 2017, the global sensor market reached $4 billion, and by 2021, it was projected to exceed $65 billion. Among these, MEMS (Micro-Electro-Mechanical Systems) sensors have emerged as a major growth area. At the Munich (Shanghai) Electronics Show, Bosch Sensortec showcased three notable products: BMA400, BMI085, and an interactive projection module. During the event, I had the opportunity to interview Ralf Schellin, the Head of Bosch Sensortec’s MEMS Products division. He shared his insights on the future of IoT sensors and their evolving role in various applications. Mr. Ralf Schellin, Head of Bosch Sensortec MEMS Products **Intelligence – Scenario Needs Upgrade** The evolution of three major sensor categories has been driven by the growing complexity of IoT applications. From basic functions to smart, AI-integrated systems, sensors are continuously adapting to meet new demands. The first category includes sensors with specific functions. These are typically simple devices that provide native data upon detection, used in applications like screen orientation, image stabilization, or gaming. They rely on basic interrupt mechanisms. The second category consists of pre-programmed sensors, which offer more advanced features tailored for complex use cases. For example, pedometers in wearables or tap recognition in smart devices require embedded algorithms to optimize performance. The third and most advanced category is the "AI" sensor. These devices integrate artificial intelligence to process data locally, enabling smarter decision-making and reducing reliance on external processing. **Customization – Fragmentation Market Hits** Bosch Sensortec recently highlighted three core products that showcase the power of modern sensor technology: **Ultra-Low Power and High Performance – BMA400** The BMA400 is designed for low-power applications while maintaining high accuracy. It's ideal for wearable devices, fitness trackers, and other battery-powered systems where efficiency is key. **Open the VR/AR Smart World – BMI085** The BMI085 is a high-performance 6-axis inertial measurement unit (IMU) that combines a 3-axis accelerometer and a 3-axis gyroscope. It's optimized for VR, AR, and motion tracking applications. Its ultra-low latency and precision make it perfect for immersive experiences, reducing motion sickness and improving user comfort. **Flexible Interactive Projection Module** This innovative module uses Bosch’s exclusive MOEMS laser scanning technology to project interactive interfaces onto any surface. It enables focus-free, flexible projections, making it ideal for smart home appliances, wearables, and AR glasses. The module is compact, measuring roughly 7mm x 30mm x 30mm. It can project on various surfaces at different distances, offering a highly intuitive user interface without requiring physical screens. **Convergence – Technology with Innovative Applications** As the IoT landscape evolves, Bosch Sensortec is focusing on integrating its sensor technology with software, algorithms, and wireless communication modules. This convergence allows for more efficient, intelligent, and scalable solutions. According to Ralf Schellin, three main trends are shaping the future of IoT sensors: 1. **Sensor-to-Sensor Integration**: Combining multiple types of sensors, such as inertial, environmental, and optical, to create more comprehensive sensing systems. 2. **Sensor-MCU/Algorithm Integration**: Embedding algorithms into sensors to reduce power consumption and improve performance, making development easier for engineers. 3. **Sensor-Wireless Module Integration**: Integrating sensors with wireless technologies like Bluetooth, Zigbee, and LoRa to enable seamless data transfer and edge computing. Bosch Sensortec, part of the larger Bosch Group, operates in four business divisions: automotive and smart mobility, industrial technology, energy and construction, and consumer goods. With over 400,000 employees worldwide, the company continues to drive innovation in sensor technology. **In Summary** As the backbone of the IoT ecosystem, sensors play a critical role in connecting the physical and digital worlds. With the continuous advancement of AI, VR/AR, and edge computing, the potential for sensors is limitless. Companies like Bosch Sensortec are leading the way, pushing the boundaries of what’s possible and unlocking the full potential of the Internet of Things.

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