Thales Visionix had introduced new enhancements to its NavChip Series 3, the latest in Thales’ family of high precision Inertial Measurement Units (IMUs). Visionix’s Microelectromechanical Systems (MEMS)-based high-precision NavChip Series 3 features advanced proprietary signal processing capabilities to provide a high-performance IMU for demanding applications. The new NavChip Series 3 allows users to choose the optimum performance at their selected price point from both NavChip and NavChip Series 3 Class A and Class B parts. Each part offers varying performance levels and corresponding price points (from within the 6-axis IMUs market). The NavChip Series 3 expands on Thales’ current IMU product offerings, providing users with improved performance, miniaturization, and environmental ruggedness. Furthermore, MEMS sensor technology, propriety advanced sensor fusion processing techniques, a small and easily mountable package, and low power dissipation make this IMU ideally suited for applications including drone navigation, robotic control, camera/antenna platform stabilization; augmented/virtual reality; aiming and alignment; and GPS/INS integration.
The device has a Class A bias in-run stability to 4º/hr. (typical), 5º/hr. (max.) with an output rate of 1000Hz, and Class B bias in-run stability 5º/hr. (typical), 10º/hr. (max.) with an output rate of 1000Hz.
It supports a broader range of applications over the +/- 16 g operating range (other ranges available upon request). The Series 3 performance enhancement aligns with our strategy to not only expand the IMU product line, but also provide users with options for selecting the ideal performance for their unique application, while minimizing the cost of the overall solution. Other significant enhancements include a 1,000 Hz update rate; embedded Attitude and Heading Reference Systems (AHRS), which reduces system complexity, cost, and power consumption; and the ability to accept other external inputs, such as a magnetometer, to enhance the systems’ overall performance, while maintaining cost and easing the system’s design complexity.
The NavChip Series 3 Class A and Class B are fully factory calibrated for bias, scale factor and misalignment over the full operating temperature range. Embedded temperature sensors enable excellent compensation over the entire-40°Cto+85°Ctemperaturerange.
The NavChip Series 3 is a very low drift IMU with a full-scale acceleration range of +/- 16 g and a full-scale angular rate of 2,000 degrees/sec. Standard specifications include a gyro bias in-run stability of 4º/hr., 5º/hr. (max.); angular random walk of <0.18º/√hr.; velocity random walk of <0.4º/√hr.; and an exceptionally quiet acceleration noise performance of better than 83 µg/√Hz.
The NavChip Series 3’s miniature package of less than 1.9 cm3 (12.5 x 24.4 x 6.1 mm) and weight of 3 g allows for flexible integration. Power consumption is a low 135 mW, making it ideally suited for power-sensitive remote and battery-operated systems. Selectable built-in-test (BIT) modes support command and continuous diagnostic monitoring. Multiple output interfaces, including I2C, TTL UART or SPI-compatible provide the designer with exceptional flexibility. The external sync pin can accept optional GPS pulse-per-second or faster synchronization signals. Single supply operation is 3.25V to 5.5 V.