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Document MT1600P.2019.A 

© Xsens Technologies B.V.

 

MTi Family Reference Manual 

 

Introduction

 

This  manual  gives  an  overview  of  the  latest  generation  Xsens  products  (MTi  1-series  and  MTi  600-
series) and their usage. For previous generations, refer to 

MTi User Manual

1

. The MTi product portfolio 

from  Xsens  currently  has  family  members  ranging  in  functionality  from  Inertial  Measurement  Units 

(IMU’s)

,  Vertical  Reference  Unit  (VRU),  Attitude  and  Heading  Reference  System  (AHRS)  to  a  fully 

integrated  GNSS/INS  (Global  Navigation  Satellite  System/Inertial  Navigation  System).  All  products 
contain  a  3D  IMU  composed  by  a  gyroscope  and  an  accelerometer  plus  a  3D  magnetometer,  with 
optionally a barometer and GNSS receiver.  
 
The MTi product range is divided in several series, the MTi 1-series, the MTi 600-series, the MTi 10-
series and the MTi 100-series.  
The MTi 1-series is a low-cost Surface-Mount Devices (SMD) module.  
The MTi 600-series is a cost effective product line for easy integration.  
The MTi 10-series

2

 

is Xsens’ entry level model with robust accuracy

The MTi 100-series is a 

Xsens’ proven high end

 

class of MEMS IMU’s, orientation and position sensor 

modules.  
 
Table  1  summarizes  all  available  official  documents  for  the  Xsens  MTi  product  line.  It  is  highly 
recommended to review all documents applicable to your Xsens Motion Tracker. 
 

Table 1: MTi product documentation overview

1

 

MTi 1-series 

MTi 600-series 

MTi 10/100-series 

MTi Family Reference Manual 

MTi User Manual 

MTi 1-series Datasheet 

MTi 600-series Datasheet 

MTi 1-series DK User Manual 

MTi 600-series DK User Manual 

MTi 1-series HW Integration Manual 

MTi 600-series HW Integration Manual 

MT CAN Protocol Documentation 

MT Manager Manual 

Magnetic Calibration Manual 

MT Low Level Communication Protocol Documentation 

Firmware Updater User Manual 

 
 

 

 

1

 Links to the latest available documentation can be found via the following link

Xsens MTi Documentation

 

2

 

not recommended for new designs

 

Summary of Contents for MTi Series

Page 1: ...67 00 fax 31 0 88 973 67 01 e mail info xsens com internet www xsens com 101 N Pacific Coast Hwy Suite 101 El Segundo CA 90245 USA phone 310 481 1800 fax 310 416 9044 e mail info xsens com internet w...

Page 2: ...rights reserved Information in this document is subject to change without notice Xsens MVN MotionGrid MTi MTx and Awinda are registered trademarks or trademarks of Xsens Technologies B V and or its p...

Page 3: ...2 2 Orientation increment and Velocity increment dq and dv 16 4 2 3 Orientation data 17 4 2 4 Velocity data 18 4 2 5 Position data 19 4 3 PHYSICAL SENSOR MODEL 19 4 3 1 Calibrated q and v outputs 20 4...

Page 4: ...A Xsens Technologies B V MTi Family Reference Manual 6 INSTALLATION TIPS AND TRICKS 29 6 1 TRANSIENT ACCELERATIONS 29 6 2 VIBRATIONS 29 6 3 MAGNETIC MATERIALS AND MAGNETS 29 7 WARRANTY AND LIABILITY 3...

Page 5: ...onents of Development Kit 11 Table 4 Description of software components of Development Kit 12 Table 5 Conditions for the use of the MT Software Suite 13 Table 6 Data outputs with reference coordinate...

Page 6: ...s for the use of Xsens products and inside information about installation MEMS sensors and GNSS receivers hardware design CAD files system architecture low level communication and sensor fusion algori...

Page 7: ...Surface Mount Devices SMD module The MTi 600 series is a cost effective product line for easy integration The MTi 10 series2 is Xsens entry level model with robust accuracy The MTi 100 series is a Xse...

Page 8: ...rence for roll and pitch calculations Essentially it delivers the same data as the AHRS except for the yaw The yaw estimate of a VRU product is unreferenced which means that it is computed without any...

Page 9: ...e information 2 2 3 MTi 10 series The MTi 10 series offers inertial and orientation data at an affordable price It features a sturdy anodized aluminium housing and robust push pull connectors The MTi...

Page 10: ...MTi 1 IMU MTi 610 IMU MTi 10 IMU MTi 100 IMU VRU MTi 2 VRU MTi 620 VRU MTi 20 VRU MTi 200 VRU AHRS MTi 3 AHRS MTi 630 AHRS MTi 30 AHRS MTi 300 AHRS GNSS INS MTi 7 GNSS INS MTi 670 GNSS INS MTi G 710...

Page 11: ...Development Kit Depending on the model of MTi you have purchased the Development Kit can contain any of the following items Table 3 Description of hardware components of Development Kit Component Desc...

Page 12: ...to online manuals Xsens Device API library MFM SDK Library Library for the Magnetic Field Mapper 3 1 1 Getting Started with MT Manager software The easiest way to get started with your MTi is to use M...

Page 13: ...edded computers and microcontrollers The low level communication is extensively described in the MT Low Level Communication Protocol Documentation3 Next to that source code is delivered to make driver...

Page 14: ...Not allowed to reverse engineer Allowed to execute reproduce modify and compile modified source code to use with Xsens products only Not allowed to modify DLL Include License Agreement with distribut...

Page 15: ...tings Modelling Parameters Next to the calibration values shown in MT Manager each device is calibrated according to more complicated models to ensure accuracy e g non linear temperature effect cross...

Page 16: ...Velocity increment Sensor fixed frame Sxyz or Oxyz Orientation increment Sensor fixed frame Sxyz or Oxyz Free acceleration Local earth fixed frame LXYZ default ENU Orientation Local earth fixed frame...

Page 17: ...gles6 roll pitch yaw XYZ Earth fixed type are output following the aerospace sequence Z Y X Rotation Matrix directional cosine matrix A positive rotation is always right handed i e defined according t...

Page 18: ...o mounting of the MTi on the automotive platform vehicle It is recommended to always mount the MTi with the x axis pointing to the front of the vehicle irrespective of the local coordinate frame used...

Page 19: ...ata is used to relate the sampled digital voltages u from the sensors to the respective physical quantity s The gain matrix is split into a misalignment matrix A and a gain matrix G The misalignment s...

Page 20: ...etic field data is in sensor fixed coordinate system Sxyz or Oxyz The units of the calibrated data output are as shown in Table 9 Table 9 Output specifications inertial and magnetometer data outputs V...

Page 21: ...019 A Xsens Technologies B V MTi Family Reference Manual 4 3 4 Free acceleration Free acceleration Data ID 0x4030 is the acceleration in the local frame LXYZ from which the local gravity is deducted T...

Page 22: ...re are several ways to mitigate the drift in yaw rotation around the z axis 1 When the MTi has sufficient movement in roll and pitch 30 degrees for more than 10 seconds the gyroscope bias will be esti...

Page 23: ...c disturbances refer to chapter 6 3 of this document Next to the solutions described on the article Estimating Yaw in magnetically disturbed environments to mitigate effects from magnetic disturbances...

Page 24: ...e optimized for different types of movement For optimal performance in a given application the correct filter profile must be set by the user Each product offer different filter profile options refer...

Page 25: ...e Xsens filter output Currently only the Portable default and Airborne 4g platforms are supported The platform model can be configured using MT Manager or low level communication For more details on G...

Page 26: ...erfaces for each product are available in the respective datasheets or hardware integration manuals Table 12 overview of interface options in MTi portfolio Interface MTi 1 series MTi 600 series I C SP...

Page 27: ...MEA protocol As almost all GNSS receivers support the output of NMEA messages this functionality enables the use of virtually any GNSS receiver It is important to note that when using the NMEAin both...

Page 28: ...the filter and user inputs Information contained within the status word are for example Selftest Filter valid GNSS fix No rotation update status Representative motion Clip flags of all axis gyroscopes...

Page 29: ...the accelerometers the following two conditions can make the readings from the accelerometers invalid 1 The magnitude of the vibration is larger than the measurement range of the accelerometer This w...

Page 30: ...incorrectly assuming that the device has rotated However in case of continuous magnetic disturbances 10 to 30 s depending on the filter settings the computed heading will slowly converge to a new sol...

Page 31: ...current specifications for the Product for a period of one year from the date of delivery ANY LIABILITY OF XSENS WITH RESPECT TO THE SYSTEM OR THE PERFORMANCE THEREOF UNDER ANY WARRANTY NEGLIGENCE ST...

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