Micro-Magic Inc. has introduced the U4930 series high-precision MEMS Inertial Measurement module (IMU) designed to serve as a direct, compatible alternative and upgrade for Honeywell’s industry-standard HG4930.
The IMU module is specifically engineered for integrators within industrial drones, high-precision navigation, autonomous driving, and mobile surveying. By maintaining a physical form factor of 64.8 × 47 × 35.3 millimeters and a weight of approximately 130 grams, the U4930 integrates into existing system architectures originally designed for the HG4930. This hardware alignment, combined with a steady-state power consumption of less than 2 watts, aims to minimize mechanical and electrical redesign costs for operators seeking supply chain diversification or performance enhancements.
Technical specifications for the U4930 demonstrate significant advancements in measurement capabilities. The integrated three-axis MEMS gyroscopes provide a measurement range of up to ±500°/s, surpassing the ±400°/s found in the HG4930, while the accelerometers reach a range of ±30g. Precision is supported by internal algorithms that provide compensation across the entire operating temperature range. The unit features a gyro bias stability of 0.3°/h (based on 10-second smoothing) and an angular random walk of 0.02°/√h, meeting the rigorous requirements of high-stakes attitude measurement.
Data integrity is maintained through an anti-vibration and anti-impact design, supporting output rates of up to 2000Hz to ensure real-time reliability in high-dynamic environments. For system communication, the module utilizes an RS422 differential interface. It supports custom protocols via host computer software, including synchronization for GPS/GNSS time data and Pulse Per Second (PPS) signals, ensuring the logic remains consistent with existing navigation algorithms.
Micro-Magic has released the series in three distinct precision tiers, models A, B, and C, to address applications ranging from industrial use to scientific research.
