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U4500 Tactical Grade MEMS IMU AHRS INS Sensor for UAV Marine Robot Navigation

U4500 Tactical Grade MEMS IMU AHRS INS Sensor for UAV Marine Robot Navigation

U4500 series sensors are composed of high-performance tactical-grade MEMS-IMU designed IMU/VRU/MRU/AHRS/INS systems, and are equipped with independently developed adaptive extended Kalman filtering, IMU noise dynamic analysis algorithms, heave estimation algorithms, carrier motion state analysis algorithms, and GNSS fusion algorithms, which can provide users with accurate position, attitude, velocity and other information.

U4500 series sensors transmit data through UART/CAN interfaces and have rich user configurations. (A transceiver needs to be connected externally for CAN)

U4500 series can synchronize with the system through external triggering, can receive UTC time, and can also align time with external systems such as radars and cameras through the synchronous output function.

A multi-functional upper computer (GUI) can help quickly evaluate the product, and these functions include but are not limited to module configuration, data display, firmware upgrade, data recording, etc.

  • Part No, :

    U4500
  • Order(MOQ) :

    1
  • Description

Product Series and Parameters

Fusion Parameters Condition U4500-A U4500-B U4500-C U4500-D Unit
Pitch /Roll)①   0.05(nom), 0.1(max) °
Resolution   0.01 °
Heading (VRU/MRU) )①   0.2(nom), 0.3(max) °
Heading (AHRS) ②   0.5(nom), 2(max)
Resolution   0.01
Starting time IMU/VRU 2 s
  MRU (static) 60  
  MRU (sea) 180  
Heave / 5/5%(nom) cm
Heave period         1~10(nom) s
Notes:
①: Turntable rotation test.
②: Measured under the condition that there is no magnetic field interference around after geomagnetic calibration, and the product needs to be configured to AHRS mode.
Gyroscope Condition U4500-A U4500-B U4500-C U4500-D Unit
Measurement range   ±300 °/s
Resolution   16 bit
Linear error① 300°/s -40℃-110℃
100°/s -40℃-110℃
±0.15(nom), ±0.3(max) °/s
Cross-axis error   ±0.15(max) %
3dB Bandwidth   235(nom), 250(max) Hz
Sampling rate   1000 Hz
Noise density   XY: 0.0004
Z: 0.0006
(°/s)/√Hz
Zero bias instability② Allan variance 0.3 °/h, 1σ
Zero bias stability  10s smooth 0.5 °/h, 1σ
Zero bias repeatability   0.8 °/h, 1σ
Angle random walk③  Allan variance XY: 0.015
Z: 0.025
°/√Hz, 1σ
Full temperature zero bias -40-85℃ XY: 0.25(max)
Z: 0.01(nom), 0.03(max)
°/s
Accelerometer sensitivity For constant gravity input 0.00075 °/s/g
Notes:
①: Linear error is the maximum deviation at a specified range from the best-fit line determined by the measured values. 
②: The value obtained by dividing the minimum value of the Allan variance by 0.664. During measurement, a 13 Hz low-pass filter setting and a 200 Hz sampling rate are used, and there should be a 15-minute stabilization time before starting data collection to ensure complete thermal stability.
③: Angular random walk is a white noise term estimated from the Allan deviation at a time constant τ = 1 second.
Accelerometer Condition U4500-A U4500-B U4500-C U4500-D Unit
Measurement range   ±16 g
Resolution   16 bit
Initial zero bias   2 mg
Linear error① 8g -40℃-110℃ ±3(nom), ±15(max) mg
  1g -40℃-110℃    
Cross-axis error   ±0.15(max) %
3dB Bandwidth   210(nom), 235(max) Hz
Sampling Rate   1000 Hz
Noise density   0.0008 m/s2/√Hz, 1σ
Zero bias instability② Allan variance 0.01 mg
Zero bias stability 10s smooth 0.03 mg
Zero bias repeatability    0.04 mg
Angle random walk③  Allan variance 0.03 m/s√h, 1σ
Full temperature zero bias -40-85℃ 0.5(nom), 2(max) mg
Notes:
①: Linear error is the max deviation at a specified range from the best-fit line determined by the measured values.
②: The value obtained by dividing the minimum value of the Allan variance by 0.664. During measurement, a 13 Hz low-pass filter setting and a 200 Hz sampling rate are used, and there should be a 15-minute stabilization time before starting data collection to ensure complete thermal stability.
③: Angular random walk is a white noise term estimated from the Allan deviation at a time constant τ = 1 second.
Magnetometer Condition U4500-A U4500-B U4500-C U4500-D Unit
Range   / ±20     Gauss
Noise   / 450     nT
Linearity   / 20     uT
Temperature sensor Condition U4500-A U4500-B U4500-C U4500-D Unit
Range   -40 – 135
Offset error   ±1
Barometer Condition U4500-A U4500-B U4500-C U4500-D Unit
Range   / 300 ~ 1200 hPa
Resolution   / 0.006 hPa
Accuracy   / ±0.06 hPa
Mechanical/Environment Condition U4500-A U4500-B U4500-C U4500-D Unit
Power supply VDD   3.6 - 5.5 V
Power consumption   370(max) mW
VOL   0.4(max) V
VOH   2.6(min) V
VIL   -0.3(min), 1(max) V
VIH   1.9(min), 3.6(max) V
Working temperature   -125
Storage temperature   -165
Dimension   24x24x14 mm
Shell material and process   Aluminum alloy CNC  
Environment protection   RoHS Directive 2011/65/EU  
EMC   LVD Directive 2014/35/EU  
Drop test   Free fall 3 times on a 75cm high experimental platform  
Temperature shock   Raise the temperature from -40 to 85 ℃ within 1h, 5 times  
MTBF   30000 h
Mechanical impact   10000 g
ESD HBM   2KV JEDEC/ESDA JS-001
Interface   Condition Min Normal Max Unit
UART1/UART2
UART3
CAN
Baud-rate   9600 115200 921600 bps
Starting position   0 100 1000 Hz
      115200   bps
Baud-rate   125 500 1000 kbps
Output frame rate   0 100 200 Hz

Production process


Product dimension

U4500 Size and Dimension


Application Scenarios

Inertial Measurement Unit application
The U4500 high-precision six-axis MEMS IMU is suitable for navigation and control scenarios such as UAV flight control, vehicle/ship attitude measurement and integrated navigation, antenna stabilization platform and mobile mapping.
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FAQ

1. What is the U4500 used for?
U4500 is a tactical-grade MEMS IMU / VRU / MRU / AHRS / INS sensor designed for UAV attitude reference, low-speed unmanned robots, underground instruments, active wave compensation, ship attitude control, dynamic positioning, platform stabilization, and construction machinery.

2. What interfaces does the U4500 support?
The U4500 supports UART and CAN interfaces. The CAN bus requires an external CAN transceiver for use.

 

3. What functions can the U4500 provide?
The U4500 integrates multiple functions including IMU, VRU, MRU, AHRS, and INS. It can output acceleration, angular velocity, geomagnetic field, air pressure, Euler angles, quaternions, heave, and, when connected to external GNSS, position, velocity, attitude, and timing information.

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