Overview
The KVH 1750 IMU is a very small, high-performance inertial sensor suitable for a wide range of unmanned applications where power use, weight and size must be kept to a minimum. By pairing the E•Core ThinFiber technology of KVH’s high-performance FOGs with solid state MEMS accelerometers, the result is an IMU that integrates easily into the most demanding applications including autonomous vehicle navigation and positioning; unmanned aerial surveillance, surveying, and mapping; humanoid robots; and oil and gas pipeline inspection equipment.
The KVH 1750 IMU is the flagship of KVH’s miniaturized advanced navigation and stabilization system sensor products. It leverages the technology of the highly successful KVH DSP-1750 fiber optic gyro (FOG), the world’s smallest high performance FOG, integrated with very low noise MEMS accelerometers. The resulting small size and high performance of the 1750 IMU make it perfect for unmanned and autonomous systems or any application where size, weight, and power dissipation must be minimized; it offers the ideal combination of price and performance.
Utilizing breakthrough proprietary algorithms, KVH designed the 1750 IMU to perform with extreme stability in the most demanding environments, including thermal ambient conditions, with outstanding shock and vibration performance. The high reliability of KVH FOG technology is a core feature that assures sustained IMU operation and mission success.
The KVH 1750 IMU offers ease of use and high adaptability, featuring flexible RS-422 asynchronous communication with user programmable data output rates from 1 to 1000 Hz. The package dimensions and mounting features enable easy drop-in replacement.
As the ability to tailor the output to exactly what the end user requires is key, KVH provides the user the opportunity to create the desired message output from both the 1750 IMU’s fiber optic gyros and integrated accelerometers. In addition, the 1750 IMU offers users a high degree of flexibility, as the baud and data rates can be adjusted. This enables the user to minimize the communication latency, delivering accurate information even faster.
With breakthrough performance, size, and flexibility in one package, the KVH 1750 IMU is easily integrated into retrofits or new designs. Most importantly, the KVH technology behind the 1750 IMU is proven and reliable, resulting in an IMU that is ideal for providing accurate data in challenging environments and mission-critical operations such as remote weapons, radar stabilization and weapon platforms.
Features
- 3 high-precision KVH FOGs provide excellent reliability and stable performance
- 3 MEMS accelerometers
- Highly accurate 6-degrees-of-freedom angular rate and acceleration data
- Affordable commercial off-the-shelf (COTS) system
- Flexible interfaces and compact design
- Excellent shock, vibration, and thermal performance
- Available with 2 g, 10 g, or 30 g accelerometers
Application
- Antenna, camera, laser pointing, and stabilization
- GNSS-aiding
- Autonomous vehicles
- AHRS
- EO/FLIR stabilization
- Flight controls
- Mapping/surveying
- Oil and gas exploration
- Navigation, guidance, and positioning
- Motion-sensing
Technical Specifications
| Performance | |
| Input Rate (max): | ±490°/sec |
| Bias Instability (25°C): | ≤0.1°/hr, 1σ (max), ≤0.05°/hr, 1σ (typical) |
| Bias vs. Temp. (≤1°C/min): | ≤1°/hr, 1σ (max), ≤0.7°/hr, 1σ (typical) |
| Bias Offset (25°C): | ±2°/hr |
| Scale Factor Non-linearity (max rate, 25°C): | ≤50 ppm, 1σ |
| Scale Factor Non-linearity (≤1°C/min): | ≤200 ppm, 1σ |
| Angle Random Walk (25°C): | ≤0.012°/√hr (≤0.7°/hr/√Hz) |
| Bandwidth (-3 dB): | ≥440 Hz |
| Electrical/Mechanical | |
| Initialization Time (valid data): | ≤1.5 sec |
| Data Interface: | Asynchronous or Synchronous RS-422 |
| Baud Rate: | Selectable 9.6 Kbps to 921.6 Kbps |
| Data Rate: | User Selectable 1 to 1000 Hz |
| Dimensions (max): | 88.9 mm Dia x 73.7 mm H (3.5 in x 2.9 in) |
| Weight (max): | 0.7 kg (1.45 lbs) |
| Power Consumption: | 8 W (max), 5 W (typical) |
| Input Voltage: | +9 to +36 VDC |
| Environment | |
| Operating Temperature: | -40°C to +75°C (-40°F to +167°F) |
| Operating Shock Limit: | 9 g, 11 msec, sawtooth |
| Operating Vibration Limit: | 8 g rms, 20-2000 Hz random |
| Accelerometers | |
| Input Limit (max): | ±2 g, ±10 g, ±30 g |
| Bias Instability (constant temp): | 0.01 mg-1σ (±2 g), 0.05 mg-1σ (±10 g), 0.15 mg-1σ (±30 g) |
| Bias Repeatability, 1yr: | 1.5 mg min to 5 mg max (±2 g), 7.5 mg min to 25 mg max (±10 g), 22 mg min to 75 mg max (±30 g) |
| Scale Factor Linearity (25°C): | 0.008 (±2 g), 0.009 (±10 g), 0.009 (±30 g) |
| Scale Factor Temp. Sensitivity: | 200 ppm/°C |
| Velocity Random Walk (25°C): | 0.024 mg/√Hz (±2 g), 0.012 mg/√Hz (±10 g), 0.36 mg/√Hz (±30 g) |
| Bandwidth (-3 dB): | 200 Hz (±2 g), 200 Hz (±10 g), 100 Hz (±30 g) |
| Data Output (Sampling) Rate: | 1 to 1000 Hz (User selectable) |
Video
Ordering
The 1750 IMU from KVH Industries is available through Canal Geomatics. If you would like more information about this unit, please do not hesitate to send us your inquiry by completing the Request Pricing form.
