SI-MIMU-P is a 10-degree-of-freedom inertial measurement unit (IMU)
based on micro-electro-mechanical systems (MEMS) technology,
featuring small size, high performance and low cost. It is mainly
used to sense the angular rate, acceleration, magnetic field
strength of the system carrier along three orthogonal axes, as well
as the air pressure in the area where the carrier is located, and
output the collected information through digital signals.
The SI-MIMU-P inertial measurement unit has built-in algorithms and
compensation software for full-temperature compensation,
installation misalignment angle compensation, nonlinear
compensation, etc. These ensure the product's stable and excellent
performance under both static and dynamic conditions, and guarantee
that it can still provide users with excellent and reliable
measurement data under harsh environmental conditions.
Main performance Parameters
| Indicator Type | Specification | Unit |
| Gyroscope | Range | ±450 | °/s |
Bias stability(1б,10s Smooth) | ≤10 | °/h |
Bias instability(Allan variance) | ≤2 | °/h |
Bias Repeatability(1σ) | ≤10 | °/h |
Angular random walk | ≤0.25 | °/√h |
Scale Factor Repeatability | ≤200 | ppm |
Scale Factor Nonlinearity | ≤200 | ppm |
Bandwidth | ≥330 | Hz |
Accelerometer | Range | ±16 | g |
Bias stability(1б,10s Smooth) | ≤0.2 | mg |
Bias instability(Allan variance) | ≤0.025 | mg |
Bias Repeatability(1σ) | ≤0.2 | mg |
Angular random walk | ≤0.025 | m/s/√h |
Scale Factor Repeatability | ≤200 | ppm |
Scale Factor Nonlinearity | ≥200 | ppm |
Bandwidth | ≥330 | Hz |
Magnetic sensor | Dynamic measurement range | ±2.5 | gauss |
Resolution | ≤0.12 | mGauss |
Noise Density | ≤50 | uGauss |
Bandwidth | ≥200 | Hz |
| Barometer | Pressure Range | 450～1100 | mbar |
Resolution | ≤0.1 | mbar |
Absolute Measurement Accuracy | ≤1.5 | mbar |
| Electrical properties | Voltage | 3～5.5 | V |
Power consumption | ≤1.5 | W |
| Others | Weight | ≤50 | g |
Size | 47*44*14 | mm |
Interface | SPI,UART | - |
