Racelogic has released details of its latest performance sensor, the IMU04. The all-new unit benefits from compact dimensions and is said to deliver ‘highly accurate’ measurements of pitch, roll, and yaw rate through the three rate gyros, as well as x, y, and z acceleration via three accelerometers.
The IMU04 is designed to operate as a stand-alone unit with simple connection and configuration via theCAN bus interface, or as part of a larger set-up when teamed with the VBOX3i. By integrating the two units, the IMU04 can operate via the GPS signal from the VBOX, improving the quality of the speed and heading signals in areas of poor satellite reception – such as tree-lined roads – ensuring that testing remains consistent.
Racelogic also states that when the two items are used in conjunction, pitch/ roll accuracy is 0.1˚ (RMS), whilst yaw angle accuracy is 0.5˚ (RMS). The VBOX IMU is encased in a splash-proof outer casing, which is rated to a limited ingress IP rating of IP67, making it ideal for use on boats or in harsh environments, as well as automotive testing.
Using synchronous 16bit sampling for each of the internal sensors provides a high degree of accuracy, with yaw rate resolution typically 0.014 degrees per second and acceleration resolution down to 0.15 mg.