The MTi product range is divided in two series, the MTi 10-series and the MTi 100-series. The MTi 10- series is Xsens’ entry level model with robust accuracy and a limited range of IO options. The 100- series is a revolutionary new class of MEMS IMU’s, orientation and position sensor modules offering unprecedented accuracies and a wide array of IO interfaces.
2.2.3 MTi-200 VRU The MTi-200 VRU is a 3D vertical reference unit (VRU) and this unit too runs the Xsens sensor fusion algorithm from the MTi-G-700 and MTi-300. The difference between the data of the MTi-300 and MTi- 200 is that yaw is unreferenced, though the yaw is still much better than just integrating rate of turn.
Identifying device functionality using the unique Device Identifier Each Xsens product is marked with a unique serial device identifier referred to as the DeviceID. The DeviceID is categorized per MTi product configuration in order to make it possible to recognize the MTi (and thus its functionality and interface) by reviewing the DeviceID.
2.3 Evolution of MTi products The MTi 10-series and MTi 100-series are Xsens 4 generation products, building on knowledge and products from over a decade. They may be designated as MkIV MTi’s. In source code or software, this can be Mk4.
To prevent this, the sleeve of the Fischer connector may be locked with the ring at the connector. Xsens has tested a set of vibration dampeners on the MTi. Vibration dampeners are low-profile rubber cylinders that allow the MTi to be mounted on an object without a direct metal to metal connection that transduces vibrations from the object to the MTi.
The XBus low-level protocol is described in high detail in the Low Level Communication Protocol: [LLCP]. The hardware driver of the USB interface for Linux can be found on http://github.com/xsens/xsens_mt. The driver is also included in Linux kernel 3.9 and higher.
2.6.3 Using the Software Development Kit (SDK) This chapter gives an introduction to the Xsens Device API (XDA). It serves as a starting point for members of a software development department interested in assessing the basis of the SDK and knowing about the background considerations.
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MTi into Euler angles. The C API exposes all possible functions that could be supported by an Xsens device. As such, a certain functionality implemented in devices is accessible by a function call that takes at least an XsDevice Object as a parameter.
Migration from MT SDK 3.3 (CMT) Programmers familiar with using the CMT interface from the MT SDK 3.x and lower (Xsens’ interface for legacy MTi products) will find that changes need to be made in order to work with the new XDA.
Component EULA/SLA Guidelines MT Manager EULA For use with Xsens products only Not allowed to re-distribute Not allowed to reverse engineer Not allowed to modify Serial key required MT SDK For use with Xsens products only Allowed to re-distribute “as is”...
3.2 Xsens Kalman Filter (XKF3i) for MTi 10-series The orientation of the MTi 10-series is computed by Xsens Kalman Filter. XKF3i uses signals of the rate gyroscopes, accelerometers and magnetometers to compute a statistical optimal 3D orientation estimate of high accuracy with no drift for both static and dynamic movements.
3.3 Xsens sensor fusion algorithm for MTi 100-series 3.3.1 MTi 100-series filter The Xsens sensor fusion algorithm in the MTi 100-series has several advanced features. It can handle a multitude of data channels, to incorporate GPS and barometer data as well. 3.3.2...
World Magnetic Model (Xsens uses WMM 2010-2015) of the earth’s magnetic field as a function of latitude and longitude. The MTi accepts a setting of the declination value. This is done by setting the position in the MT Manager, SDK or by direct communication with the sensor.
Depending on the specific situation this can lead to large errors or even instability of the filter. Take care to select the correct filter profile. If you are uncertain, do not hesitate to contact Xsens or your local distributor. ...
The MTi-G-700 has the ability to output position. The performance highly depends on the GPS availability, placement of the GPS antenna etc. The table below states the position and velocity accuracy according to Xsens’ reference trajectories, as explained in [MTI_TD].
The MTi 10-series and MTi 100-series use the same accelerometers and magnetometer. The output of the magnetometer is in arbitrary units (a.u.), one a.u. is the magnetic field strength during calibration at Xsens’ calibration lab. This is approximately 40 uT. An accelerometer range of 15g is available as well.
The MTi-G-700 is the only MTi that features a GPS receiver. It requires an active antenna, which is delivered with the Development Kit and can be ordered separately from Xsens as well. It is possible to use a different antenna that better suits your application.
4.8 Test and Calibration Certificate Each MTi is accompanied by an individual Test and Calibration Certificate. This certificate states the calibration values determined during the calibration of the MTi at Xsens’ calibration facilities. The values are explained here in short: The “IMU specifications”...
Uncalibrated raw output mode The MTi can output sensor component readout (SCR), i.e. digitized voltages of all sensors, before they are filtered or calibrated using Xsens’ proprietary firmware and calibration parameters. These sensors are the gyroscopes (rate of turn), accelerometers (acceleration), magnetometer (magnetic field), barometer (static pressure) and temperatures (gyroscope temperatures and a general temperature sensor).
4.10 Legacy output messages The MTi 10-series and MTi 100-series are Xsens’ 4 generation MTi (MkIV). The 2 and 3 generation products have been released in 2005 and 2008. The 4 generation can be distinguished by their aluminium casing (or orange PCB if you are using an OEM). A photo of the 4 generation MTi can be found on the cover of this manual.
Config State or Measurement State is to use the GoToConfig or GoToMeasurement messages. The eMTS data is required to be able to later process the data by Xsens software to calculate calibrated inertial data values as well as estimating orientation etc.
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1. Internal acquisition, calculation time and message generation (signal processing duration) 2. Serial transmission time Thanks to the system architecture of the Xsens sensor fusion algorithm, the signal processing duration is independent of the filter profile. Using a multi-core processing unit, it is possible to bring...
Connect the cable to the MTi and the USB cable to any USB port. Under Windows 7 and Windows XP, the Xsens USB driver will be automatically installed if not already installed. In order to lock the CA- MP-MTi to the casing (this will prevent vibration of the push-pull sleeve to be transferred to the casing and MEMS sensors), screw the round nut clockwise.
Using the MTi MkIV with an external USB converter Xsens offers a cable to use the MTi with USB and SyncIn. This cable also offers an interface via a virtual COM-port instead of WinUSB. The following cables are available in Xsens’ webshop (http://shop.xsens.com):...
Environmental protection of the housing All encased MTi’s are designed to withstand usage in application where dust and occasional water splashing can be expected. However, Xsens in house testing has confirmed that the casing and connector can withstand temporary environmental circumstances equivalent to Protection Classification IP67 (sealed against dust, 30 minutes immersion at depth of 1 m).
7.4 CE Declaration of Conformity for the MT devices We, Xsens Technologies BV, of Pantheon 6a 7521 PR Enschede, The Netherlands declare under our sole responsibility that our products: MTi-10-#A#G# (MTi-10-2A5G4, MTi-10-2A5G0, MTi-10-4A5G4, MTi-10- 4A5G0, MTi-10-6A5G4, MTi-10-6A5G0, MTi-10-2A8G4, MTi-10-2A8G0, MTi-10-4A8G4, MTi-10-4A8G0, MTi-10-...
7.7 Customer Support Xsens is glad to help you with any questions you may have about the MTi, or about the use of the technology for your application. Please use the FAQ, contact Xsens’ distributor or if you are a direct customer of Xsens our Customer Support: ...
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