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BWT901 | manual v0707 | http://wiki.wit-motion.com/english

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Contents

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1.1 Warning Statement

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2 Use Instructions with PC

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2.1 Connection Method

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2.1.1 Serial Connection

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2.1.2 USB-HID Connection

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2.1.3 PC’s Bluetooth Connection

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2.2 Software Introduction

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2.2.1 Main Menu

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2.2.2 Menu of Configuration

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2.3 Calibration

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2.3.1 Accelerometer Calibration

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2.3.2 Magnetic Field Calibration

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2.3.3 Gyroscope Automatic Calibration

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2.3.4 Reset Z-axis Angle

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2.3.5 Reset Height to 0

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2.4 Configuration

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2.4.1 Return Content

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2.4.2 Output Rate

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2.4.3 Baud Rate

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2.4.4 Data Recording

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Содержание BWT901

Страница 1: ...BWT901 manual v0707 http wiki wit motion com english 1 USER MANUAL BWT901 Bluetooth 2 0 Inclinometer Sensor...

Страница 2: ...u need in the provided documents please contact our support team Our engineering team is committed to providing the required support necessary to ensure that you are successful with the operation of o...

Страница 3: ...ction 7 2 1 2 USB HID Connection 9 2 1 3 PC s Bluetooth Connection 10 2 2 Software Introduction 11 2 2 1 Main Menu 11 2 2 2 Menu of Configuration 12 2 3 Calibration 16 2 3 1 Accelerometer Calibration...

Страница 4: ...structions with Android Phone 32 3 1 APP Installation 32 3 2 Connection 33 3 2 1 APP Pairing 33 3 2 2 Phone s Bluetooth Pairing 35 3 3 Calibration 37 3 3 1 Acceleration Calibration 37 3 3 2 Magnetic F...

Страница 5: ...an CE standard accelerometer It is employed where the highest measurement accuracy is required BWT901 offers several advantages over competing sensor Heated for best data availability new WITMOTION pa...

Страница 6: ...it will lead to the burning of the circuit board For proper instrument grounding use WITMOTION with its original factory made cable or accessories Do not change the baud rate because WITMOTION BLUETO...

Страница 7: ...ions with PC 2 1 Connection Method PC software is only compatible with Windows system BWT901 Playlist 2 1 1 Serial Connection Step 1 Connect the sensor with a serial converter PIN Connection VCC 5V TX...

Страница 8: ...age Link to tutorial of 3 in 1 serial converter TTL serial cable CH340 driver Link to tutorial of 6 in 1 serial converter CP2102 driver Step 3 Plugin the converter to computer and confirm the com port...

Страница 9: ...Step 1 Plugin the USB HID adapter to computer Step 2 Power on the sensor after red light of HID adapter flashes Step 3 Wait till the sensor s blue LED light keeps on means pairing succeeded Step 4 Ope...

Страница 10: ...on computer s Bluetooth Step 2 Power on the sensor Step 3 Search HC 06 device and input pairing password 1234 Step 4 Confirm the outgoing com port on More Bluetooth Options page Step 5 Open software M...

Страница 11: ...left side Record Record function 3D 3D DEMO Config Configuration setting Help Language English or Chinese Bluetooth Set Binding device or unbind Firmware update Option for firmware update About Minimu...

Страница 12: ...om english 12 2 2 2 Menu of Configuration Menu of Configuration Button Function Read Config Reading the current configuration Lock Lock the sensor Unlock Unlock the sensor Calibrate Time Calibration t...

Страница 13: ...leration Accelerometer calibration Magnetic Field Magnetometer calibration Reset Height Reset height data to 0 only for sensor built in barometer including WT901B WTGAHRS2 WTHARS1 HWT901B Reset Z axis...

Страница 14: ...in barometer like HWT901B WTGAHRS2 WT901B etc Location Latitude Longitude data output only for GPS IMU series such as WTGAHRS1 WTGAHRS2 PDOP Ground velocity data output only for GPS IMU series such as...

Страница 15: ...BWT901 manual v0707 http wiki wit motion com english 15 Cycle Not available for Bluetooth sensor series...

Страница 16: ...er Calibration Purpose The accelerometer calibration is used to remove the zero bias of the accelerometer Before calibration there will be different degrees of bias error After calibration the measure...

Страница 17: ...e is 1g on Z axis acceleration 1 After 1 2 seconds the three axial acceleration value of the module is about 0 0 1 the X and Y axis Angle is around 0 After calibration the x y axis Angle is accurate N...

Страница 18: ...sor will have a large zero error when it is manufactured If it is not calibrated it will bring a large measurement error which will affect the accuracy of the measurement of the z axis Angle of the he...

Страница 19: ...BWT901 manual v0707 http wiki wit motion com english 19 Step 3 Slowly rotate the module 360 around X Y Z 3 axis accordingly...

Страница 20: ...wit motion com english 20 Step 4 After rotation click End calibration Successful result Most of data dots will be within the ellipse If not successful please stay away from the objective that can crea...

Страница 21: ...angle The z axis angle is an absolute angle and it takes the northeast sky as the coordinate system can not be relative to 0 degree Z axis to 0 is to make the initial angle of the z axis angle is rel...

Страница 22: ...t of the data return can be set according to user needs click the configuration option bar and check the data content to be output Taking BWT901 as an example the default output of the module is accel...

Страница 23: ...refers to 10 packets returned every second There contain 33bytes in a data packet in default Reminder If there being many types of return data and low baud rate of communication the module will automa...

Страница 24: ...BWT901 manual v0707 http wiki wit motion com english 24 2 4 4 Data Recording Method are as follows Step 1 Click Record and Begin Step 2 Click Stop...

Страница 25: ...the data as txt file Notice If there is repeated TIME of data that s caused by low resolution of the Windows system s time The changes in other data is correct It is highly recommended that data can...

Страница 26: ...ecorded file each time there will a BIN file created in the folder of record file in path of installed software meanwhile Recorded data playback method Step 1 Disconnect the sensor Step 2 Click File B...

Страница 27: ...BWT901 manual v0707 http wiki wit motion com english 27 Step 4 Click Run and the Binary file will be playback When playback the rate can be editable...

Страница 28: ...Placement Direction The default installation direction of the module is horizontal When the module needs to be installed vertically the vertical installation can be set Step 1 Rotate the module 90 de...

Страница 29: ...Default bandwidth is 20Hz Function 1 The higher rate of bandwidth setting will lead to the higher fluctuation in data waveform Conversely the lower rate of bandwidth data will become more fluent For e...

Страница 30: ...veform will show more fluctuation 2 The higher rate of bandwidth will solve the data repeating problem For example if the bandwidth setting is 20Hz retrieval rate as 100Hz there will be 5 repeating da...

Страница 31: ...lculated and analyzed based on the magnetic field Z axis angle will have few drift The default algorithm of BWT901 is 9 axis If there is magnetic field interference around installed environment it is...

Страница 32: ...droid APP About Android APP 1 Note Paired devices can be searched without turning on positioning According to Google s requirements if APP installed on a higher version of Android 6 0 mobile phone pai...

Страница 33: ...wit motion com english 33 3 2 Connection 3 2 1 APP Pairing Step 1 Install the APK file give permission of Location and Storage Step 2 Open APP and choose 9 axis series Step 3 Turn on the sensor and se...

Страница 34: ...BWT901 manual v0707 http wiki wit motion com english 34 Step 4 When pairing is done the blue LED light of sensor will remain still After a few seconds the data will show automatically...

Страница 35: ...e give permission of Location and Storage Step 2 Turn on the Bluetooth in the setting menu of smartphone Step 3 Search the Bluetooth sensor First pairing the device will be recognize as mac address an...

Страница 36: ...com english 36 Step 5 Open the WITMOTION APP and choose 9 axis Series Step 6 Click Scan and select the paired Bluetooth device HC 06 No need to input password Step 7 The Blue LED light of sensor will...

Страница 37: ...tion BWT901 Playlist 3 3 1 Acceleration Calibration Step 1 Keep the module horizontally stationary Step 2 Click the Calibration menu Step 3 Click the Acceleration Calibration and wait for 3 seconds St...

Страница 38: ...tep 2 Click the Magnetic calibration button Step 3 Slowly rotate the module 360 around X Y Z 3 axis accordingly Step 4 After rotation click Finish Check the result The Z axis angle will have fewer dri...

Страница 39: ...Step 2 Plugin the USB HID adapter in the beginning Step 3 Turn on the sensor after the red light of USB HID adapter begins flashing Step 4 Wait till sensor s blue LED light keeps on Pairing succeeds...

Страница 40: ...n Link to download all sample code Link to sample code instructions demo Notice There is no sample code provided for Linux or Python system at present 5 1 Arduino Download link Arduino UNO3 Demo Link...

Страница 41: ...BWT901 manual v0707 http wiki wit motion com english 41 5 5 C DEMO link 5 6 Matlab Receive Sample Code Dataplot DEMO...

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