High performance under vibration.
Precisely calibrate the zero, zero temperature coefficient, sensitivity, sensitivity temperature coefficient, orthogonality error and acceleration effect of the gyroscope, and the zero, zero temperature coefficient, sensitivity, sensitivity temperature coefficient and orthogonality error of the accelerometer.
Application:
Features:
●High performance under vibration.
●Precisely calibrate the zero, zero temperature coefficient, sensitivity, sensitivity temperature coefficient, orthogonality error and acceleration effect of the gyroscope, and the zero, zero temperature coefficient, sensitivity, sensitivity temperature coefficient and orthogonality error of the accelerometer.
●High performance GNSS unit.
●200Hz strapdown solution, high-speed sampling to ensure the calculation of motion details, to suppress aliasing, improve the signal-to-noise ratio.
●RS-485
●Low power consumption:typical 0.08A(5V)
Wiring definition:
NVS910 Lemo EGG0B connector lead definition reference Layout No.1 and Pic No.2
Number | Symbol | Definition |
1（black） | GND | GND |
2（red） | VCC | Positive input |
3（yellow） | RS485 _TX | RS485 output |
4（green） | RS485 _RX | RS485 input |
●Power supply shoud between 5±0.1V DC,if the power supply line is too long,can use filter or external voltage regulator.
●IMU apply M3 half-round head screw fixed on the carrier,The looseness during operation will affect the measurment accuracy.
●In the start supplying electric we suggest stand within 30 seconds,finish the self-checking and intial alignment process.If the carrier is moving in the start supplying electric,it will lead to intial alignment process delayed.
●Try to install the IMU in the center of the cerrier or close to the center.
●Try to avoid strong quake,temperature changing (If mounted on the side of engine),use shock absorber if necessary.
●Try to align the IMU axis with the carrier axis.
Format of data package:
FH （2Bytes） | OrderID（1Bytes） | EquipmentID（2Bytes） | Data length（2Bytes） | Data area（41Bytes） | Checksum（2Bytes） | FT（1Bytes） | |
0xFF | 0x5A | 0x24 | 0x0000 | 0x0029 | -- | CRC | 0x33 |
Note:Low byte in the beginning,high byte in the behind for the data length,data area,checksum.
Checksum：
Order ID | Equipment ID | Data length | Data area |
（1Bytes） | （2Bytes） | （2Bytes） | （53 Bytes） |
Production execution standard reference:
●Enterprise quality system standard: ISP9001:2008 standard (certification No. : 128101)
Production standard of inclination sensor: GB/T 191 SJ 20873-2003 general specification for inclinometer and level.
●Standard for inclination sensor calibration: jjf1119-2004 electronic level calibration specification
Test standard for gyro acceleration: test method for gyro accelerometer QJ 2318-92.
●Software development reference standard: GJB 2786a-2009 general requirements for military software development.
●Product environmental test test standard : GJB150
●Standard for electromagnetic interference test : GB/T 17626
Specification :
Items | standard | note |
Heading | ||
Input range(°) | ±180 | |
Accuracy(°) | <2° | 1σ |
Resolution rate (°) | 0.01 | |
Horizontal attitude | ||
Input range: Roll，pitch(°) | ±180 | |
Accuracy (°) | <0.4° | 1σ |
Resolution rate (°) | 0.01 | |
Angular velocity | ||
Input range: X,Y,Z (°/sec) | ±500 | Standard |
Zero Absolute error(°/sec) | <0.02 deg/s | |
bias instability((°/hr) |
10 | Allen variance, H precision optional |
Resolution rate (°/sec) | 0.001 | |
ARW (°/√hr) | <0.2 | |
Accelerated Speed | ||
Input Range: X,Y,Z(g) | ±20g | |
Bias Instability(mg) | <1mg | Working temperature area |
Resolution rate (mg) | <0.1mg | |
Magnetic | ||
Measure rangeX,Y,Z (gauss) | 8 | |
Resolution rate (mgauss) | 2 | |
linearity | 0.5% | |
Misalignment Angle(°) | 0.1 | |
Bandwidth | ||
Sensor bandwith | 60Hz | Internal filter,can adjustable |
Working environment | ||
Electric shock | 200g@5ms | |
Non electric shock | 10000g@0.5ms | |
Shock resistance | 20g rms | Random 20Hz-2kHz |
Working temperature | -40°C ~85°C | |
Electrical interface | ||
Input voltage (DCV) | 5±0.1V | |
Size(mm) | 30*30*24 | |
Quantity(g) | ＜40 | |
Interface type | 4line | |
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