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IP67 Protection Imu Inertial Navigation System For Offshore Cranes MRU200

Nanjing Sky MEMS Technology Co.,Ltd.
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Nanjing Sky MEMS Technology Co.,Ltd.
City: Nanjing
Province/State: Jiangsu
Country/Region: China
Tel: +86-25-83356968
Contact Person:
Mr David zhu

IP67 Protection Imu Inertial Navigation System For Offshore Cranes MRU200

Brand Name : SkyMEMS
Model Number : MRU200
Certification : CE, FCC, ROHS
Place of Origin : Nanjing, Jiangsu
Price : discuss personally
Payment Terms : Western Union, MoneyGram, L/C, T/T, D/A, D/P
Supply Ability : 1000PCS for month
Delivery Time : 3-8 days after payment
Packaging Details : Strong carton with PET strap for MRU200 Motion Reference Unit
Application : Offshore Cranes
Integrated sensors : Triaxial accelerometer, triaxial gyroscope
Position accuracy of pure inertial navigation : 100m (100s)
Attitude angle error : ≤2°
Power supply : DC +7V~+15VDC
Output interface : RS232
Data refresh frequency : 1000Hz Adjustable
Overload resistance : 10000g
Weight : ≤150g
Dimension : 50*40*30mm
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Inertial System INS Sensor Motion Reference Unit Inertial Navigation System for Offshore Cranes MRU200

Product Description

MRU200 Motion Reference Unit utilizes the latest developments in Micro Electro Mechanical Systems (MEMS) technology to provide accurate determination of Pitch, Roll, and Heave for any carrier on which it is mounted.

Main Features

- High stability, high reliability, high survivability in harsh environment, high accuracy, fully calibrated MRU

- Provide accurately real-time 3D position, speed, acceleration, attitude angle, angular rate, etc.

- Position accuracy of pure inertial navigation: 100m (100s)

- Attitude angle error: 2°

- Overload resistance:10000g, IP67 protection

- Wide temperature: -40°C~+85°C

- Small size: 50*40*30mm

Typical Application

MRU200 Inertial Navigation System Motion Reference Unit enjoys high overload resistance up to 10000g, It has been widely applied in the special solutions, such as:

- Rocket

- Avionics

- Unmanned Ground Vehicle

- Tactical weapon

- Unmanned aircraft

- Robot Motion monitoring


Technical Specifications

Technical Specs
NameTechnical specsRemarks
Position accuracy of pure inertial navigation<100mWithin 100s
Attitude angle error≤2°
Power supplyDC +7V~+15VDC
Output interfaceRS232
Data refresh frequency1000HzAdjustable
Working Temperature-40~85°C
Overload resistance10,000g

Competitive Advantages

High Performance Motion Reference Unit

- Advanced, extendable, embedded Kalman Filter based sensor fusion algorithms

- Position accuracy of pure inertial navigation: 100m (100s)

- Full temperature calibration of all sensing elements.

- Environmentally sealed (IP67), compact design

- Overload resistance: 10,000g

- Full tests and individual calibration from -40 to 85°C

- High cost effective


What is Accelerometer Offset?

An offset on the accelerometer leads to an error during align-ment, i.e. determination of initial roll and pitch angle. An offset of 0.1 mg leads to approx. 0.006 degree angular error (attitude error). The sensor off-sets can be estimated during operation by the system integrated Kalman filter, using GPS or DGPS data or ZUPT (zero velocity update procedure).

What is Bandwidth?

In general the dynamic performance of an inertial measurement system is as better as higher the internal sampling rate and the bandwidth of the inertial sensors is. Also the proper internal data synchronization is very important for accurate signal processing if the IMS is operated under difficult dynamical environment. A high precision internal time reference therefore is very important to be available inside of the IMS. Additionally a low latency of the data output is mandatory to use an INS for the trajectory or attitude control of autonomous vehicles.

What is Gyro Random Walk?

This value, given in deg/sqrt(hr), shows the noise of the used gyro. The higher the noise the more noise is measured on the angular rates and on the angles. Some manufacturers also specify it as the noise density in deg/h/sqrt(Hz). Both values are equivalent - if the second value is divided by 60, you get it in deg/sqrt(hr). An angular random walk of 0.003 deg/sqrt(hr) indicates, that the an-gular error (incer-tainty) due to random walk is e.g. 0.001 deg after 6 minutes (un-aided) or 0.0004 deg after 1 minute (all values one sigma). The angular random walk is very important for the accuracy of north seeking, because if the random walk decreases times 2 then the needed duration for north seeking decreases by times four (if the resolution of the gyro is high enough).

The plot of the Allan Variance shows the square-root ARW of a MEMS gyro graphically (take the value at 1 sec and divide it by sixty to obtain the ARW in [deg/sqrt(hr)]).

At 1 sec the value of the square-root of the AllanVariance is 15 deg/hr. This leads to a value of the Angular Random Walk (ARW) of 15/60 deg/sqrt(hr) = 0.25 deg/sqrt(hr) = 0.0042 deg/s/sqrt(Hz) = 15 deg/hr/sqrt(Hz) [white gyro noise assumed]. The bias stability (minimum point of the graph) is 0.8 deg/hr at a correlation time of 3'000 seconds. So it is really quite a good MEMS gyro which we have in use.

Product Tags:

ins navigation system


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