26 SENSOR TECHNOLOGY www.ti.com Issue 1 2024 Power Electronics Europe www.power-mag.com comprehensive, real-time 360° view of the surrounding environments, as shown in Figure 3. These “senses” provide actionable information for the driver, helping them assess the hazards around them and react accordingly. TI mmWave radar sensors, for example, the IWRL6432, can provide highly accurate measurements for both robotics and automotive applications. These sensors measure not only the distance of objects in their field of view, but also the relative velocities of any obstacles in challenging environmental conditions like darkness. These sensors use radio waves and their echoes to determine the direction and distance of a moving object by measuring velocity, angle and range, helping robots and vehicles take more predictive actions based on how quickly objects are approaching the sensor. TI mmWave sensors are also Safety Integrity Level 2- certified and include built-in security to support evolving safety standards at a system level. Accurate odometry information is essential for navigation in autonomous mobile robots. Information is derived from measuring the rotation of wheels on the robot’s platform. 3D Hall-effect position sensors, e.g., the TMAG5170, provide high precision at speeds up to 20ks/s while using less power. The TMAG5170 also has an integral angle calculator engine, which frees up the microcontroller for other functions. Sensing technologies can drive forward the potential of sensing in modern systems to allow electronics to act and react faster and more accurately to the world around us. Figure 4: An autonomous mobile robot in a warehouse. Figure 3: Radar sensing for ADAS showing the range of view for multiple cameras and sensors.
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