High Accuracy Small Size Low Power Consumption Fiber Optic Inertial Unit for Dynamic Measurement
Price:
Negotiable
MOQ:
NAVI OPTICS
Delivery Time:
Negotiable
Brand:
NAVI OPTICS
Product Description
High Accuracy & Stability TDF42IMU-D Fiber Optic Inertial Unit
Single & Dual-Axis Modulation Fiber Optic Inertial Measurement Unit
Product Overview
Fiber optic inertial units offer significant advantages including compact size, lightweight construction, low power consumption, and high precision accuracy. These units support pure strapdown, single axis, and dual axis modulation configurations, making them ideal for modern unmanned platforms, underwater/torpedo weapons, and land/airborne weapon systems requiring small form factor, high-precision inertial measurement equipment with dynamic angular and linear motion sensing capabilities.
Performance Specifications
| Component | Parameter | Specification | Notes |
|---|---|---|---|
| Gyroscope Performance | Zero Bias Stability (100s) | 0.05°/h | |
| Zero Bias Stability (10s) | 0.1°/h | ||
| Variable Temperature Zero Bias Stability | 0.5°/h | ||
| Full Temperature Scale Factor | ≤200ppm | ||
| Random Walk Coefficient | 0.01°/√h | ||
| Input Range | 400°/s | ||
| Accelerometer Performance | Deviation Monthly Comprehensive Error | 50μg | |
| Zero Bias Temperature Sensitivity | 50μg/℃ | ||
| Scale Factor Monthly Comprehensive Error | 50ppm | ||
| Scale Factor Temperature Sensitivity | 50ppm/℃ | ||
| Input Range | ±20g | ||
| System Characteristics | |||
| Environmental Performance | Operating Temperature | -40℃ to 60℃ | |
| Storage Temperature | -45℃ to 70℃ | ||
| Power Supply | 18-36V DC | ||
| Stable Power Consumption | ≤12W | Startup power consumption ≤25W | |
Electrical Interfaces
The inertial unit features external electrical interfaces including power supply, RS422 communication interface, and 100Mbps Ethernet interface. The external electrical interface socket model is J30JM-15ZKP43, with matching plug model J30J-15TJL.
| Pin | Connectivity | Signal Name | Signal Characteristics |
|---|---|---|---|
| 1,2 | External Power Supply | PCS Power Supply Positive | 24V |
| 3,4 | PCS Power Supply Ground | Power Ground | |
| 5 | 200Hz Signal Output | IMU_TX1+ | IMU Data Output Positive |
| 6 | IMU_TX1- | IMU Data Output Negative | |
| 9 | Synchronization Signal | IMU_RX1+ | IMU Synchronization Signal Positive |
| 10 | IMU_RX1- | IMU Synchronization Signal Negative |
Communication Protocol
- RS422 serial port 1 outputs three channels of angle increment information, three channels of speed increment information, IO count information, and temperature information at 200Hz data frequency (raw observation values without interpolation are compensated for errors)
- RS422 serial port 2 outputs time synchronization signal at sampling time 1 (valid rising edge representing inertial sensor sampling time) as RS422 differential signal with 10±2μs pulse width and 5ms±20μs sampling signal interval
- Rising and falling edge level establishment time does not exceed 100ns
- Serial port 1 data transmission begins 50μs after rising edge emission
Output Data Protocol
Communication Parameters:
• Baud Rate: 460,800 bps
• Output Format: RS422, 1 start bit, 1 stop bit, 8 data bits, no checksum
• Data Frequency: 200Hz
• Byte Order: Low byte first, high byte last
• Undefined bits default to 0
• Baud Rate: 460,800 bps
• Output Format: RS422, 1 start bit, 1 stop bit, 8 data bits, no checksum
• Data Frequency: 200Hz
• Byte Order: Low byte first, high byte last
• Undefined bits default to 0
| Byte Number | Meaning | Data Type | Length | Description |
|---|---|---|---|---|
| 1-4 | Packet Header | unsigned int | 4 bytes | 0x55,0x55,0x55,0x55 |
| 5-8 | Packet Count | unsigned int | 4 bytes | IMU Internal Count Value |
| 9-12 | X Gyroscope Data | Single Precision Floating Point | 4 bytes | Angle Increment (degrees) |
| 12-16 | Y Gyroscope Data | Single Precision Floating Point | 4 bytes | Angle Increment (degrees) |
| 16-20 | Z Gyroscope Data | Single Precision Floating Point | 4 bytes | Angle Increment (degrees) |
| 21-24 | X Accelerometer Data | Single Precision Floating Point | 4 bytes | Speed Increment (m/s) |
| 25-28 | Y Accelerometer Data | Single Precision Floating Point | 4 bytes | Speed Increment (m/s) |
| 29-32 | Z Accelerometer Data | Single Precision Floating Point | 4 bytes | Speed Increment (m/s) |
| 33-34 | X Accelerometer Temperature | unsigned int | 2 bytes | Temperature Measurement |
| 35 | IO1 Pulse Counting | unsigned int | 1 byte | - |
| 36 | IO2 Pulse Counting | unsigned int | 1 byte | - |
| 37 | Sign Position | unsigned int | 1 byte | - |
| 38 | Checksum | unsigned int | 1 byte | Sum of bytes 1-37 |
Data Interpretation Notes:
• X, Y, and Z-axis gyroscope data represent angle increments measured in degrees
• X, Y, and Z-axis accelerometer data represent speed increments measured in meters per second
• Temperature unit: degrees, positive=(D33+D34*256)*0.01, negative=(D33+D34*256-65536)*0.01
• Flag definition details provided in Appendix 1(b)
• X, Y, and Z-axis gyroscope data represent angle increments measured in degrees
• X, Y, and Z-axis accelerometer data represent speed increments measured in meters per second
• Temperature unit: degrees, positive=(D33+D34*256)*0.01, negative=(D33+D34*256-65536)*0.01
• Flag definition details provided in Appendix 1(b)
Physical Dimensions
Dimensions: 90 * 90 * 78 mm (tolerance ±1mm, excluding connectors)
Weight: ≤ 900g
Weight: ≤ 900g
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Company
QINGDAO NAVI OPTICS TECHNOLOGY CO.,LTD
Location
Liando U Valley 25#, No.423, Juyang Rd, Huangdao District, Qingdao, 266425,China
Contact Person
Ming Ming