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WiT WT901B, Руководство пользователя

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WT901B | manual v0707 | http://wiki.wit-motion.com/english

- 22 -

2.4.2 Output Rate

The default return rate of the module is 10Hz, the highest return rate supports
200Hz.
10Hz 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 automatically reduce the frequency and output
at a maximum allowable output rate. The default baud rate is 9600.

Содержание WT901B

Страница 1: ...WT901B manual v0707 http wiki wit motion com english 1 USER MANUAL WT901B 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: ...are Introduction 9 2 2 1 Main Menu 9 2 2 2 Menu of Configuration 11 2 3 Calibration 15 2 3 1 Accelerometer Calibration 15 2 3 2 Magnetic Field Calibration 17 2 3 3 Gyroscope Automatic Calibration 19 2...

Страница 4: ...xis 9 axis Algorithm 36 2 4 13 Set Alarm Status 37 3 Use Instructions with Android Phone 38 3 1 APP Installation 38 3 2 Hardware Preparation 39 3 3 Connection 40 3 4 Calibration 44 3 4 1 Acceleration...

Страница 5: ...an CE standard accelerometer It is employed where the highest measurement accuracy is required WT901B offers several advantages over competing sensor Heated for best data availability new WITMOTION pa...

Страница 6: ...ower supply can lead to permanent damage to the sensor VCC cannot connect with GND directly otherwise it will lead to the burning of the circuit board For proper instrument grounding use WITMOTION wit...

Страница 7: ...ith PC 2 1 Connection Method PC software is only compatible with Windows system Link to WT901B s demo video 2 1 1 Serial Connection Step 1 Connect the sensor with a serial converter PIN Connection VCC...

Страница 8: ...sage 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 por...

Страница 9: ...ls box on 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 Ab...

Страница 10: ...WT901B manual v0707 http wiki wit motion com english 10 Close Close com port...

Страница 11: ...om english 11 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 12: ...by the module after connecting to the computer to conflict with the mouse causing the mouse to jump After checking this function the function will take effect the next time the module is used or it c...

Страница 13: ...IIC address Menu of Content Button Function Time Time data output Acceleration Acceleration data output Velocity Angular velocity data output Angle Angle data output Magnetism Magnetic field data out...

Страница 14: ...te quantity PDOP HDOP VDOP data only available when the sensor connecting with GPS module such as WTGAHRS1 WTGAHRS2 GPS IMU GPS Original Only output GPS raw data only available when the sensor connect...

Страница 15: ...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 16: ...ere is 1g on Z axis acceleration After1 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 No...

Страница 17: ...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 18: ...WT901B manual v0707 http wiki wit motion com english 18 Step 3 Slowly rotate the module 360 around X Y Z 3 axis accordingly...

Страница 19: ...ot successful please stay away from the objective that can create magnetic field interference 2 3 3 Gyroscope Automatic Calibration The gyroscope calibration is to calibrate the angular velocity and t...

Страница 20: ...owered on the Z axis will automatically return to 0 Calibration methods as follow firstly keep the module static click the Config open the configuration bar and then click Reset Z axis Angle option yo...

Страница 21: ...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 WT901B as an example the default output of the module is accel...

Страница 22: ...turn rate supports 200Hz 10Hz 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 commun...

Страница 23: ...ule you need to select the baud rate to be changed in the communication rate drop down box in the configuration bar based on the correct connection between the software and the module Note After the c...

Страница 24: ...WT901B 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: ...WT901B 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: ...used working and entered the standby mode Power consumption is reduced after sleeping Wake up The module enters the working state from the standby state The module defaults to a working state in the C...

Страница 29: ...nstallation 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 degrees around the X axis Step 2 Pla...

Страница 30: ...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 31: ...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 32: ...of the module is on continuously for about 2 seconds The LED is off and the factory reset operation is completed Command method connect the WT901B module and the computer through the USB TTL module c...

Страница 33: ...x50 which can be changed by software Change the IIC address only when the module connect to PC program successfully and enter the new 16 hexadecimal IIC address and click the change button Reminder Th...

Страница 34: ...extended port In different modes the port state data DxStatus has the following meanings Mode Implication Analog input mode Analog voltage Digital input mode Port high and low level state Digital hig...

Страница 35: ...lse DxStatus 0 For digital output mode Voltage is high DxStatus 1 Voltage is low DxStatus 0 PWM output mode is used for the output of the PWM wave the cycle and the high level width can be adjusted th...

Страница 36: ...alculated and analyzed based on the magnetic field Z axis angle will have few drift The default algorithm of WT901B is 9 axis If there is magnetic field interference around installed environment it is...

Страница 37: ...t as the alarm status output port Take the following settings as an example Normally the four ports output low level 0V and when the X axis angle value is greater than 10 or less than 10 the correspon...

Страница 38: ...on com english 38 3 Use Instructions with Android Phone For APP configuration introduction please referring to the Chapter 2 2 3 1 APP Installation Install the APK file give permission of Location and...

Страница 39: ...B manual v0707 http wiki wit motion com english 39 3 2 Hardware Preparation Connecting with Android smartphone requires a serial cable and a Type C converter or OTG converter according to phone s inte...

Страница 40: ...able Then connect the cable with type c converter Plug in the device type c converter to the phone Notice 1 After successful connection there will be a notification reminding that Choose an APP for th...

Страница 41: ...WT901B manual v0707 http wiki wit motion com english 41 Step 3 Open APP and choose 9 axis Series as sensor series...

Страница 42: ...WT901B manual v0707 http wiki wit motion com english 42 Step 4 Select the baud rate 9600...

Страница 43: ...WT901B manual v0707 http wiki wit motion com english 43 After selection and wait for a few seconds the data will show automatically...

Страница 44: ...tion WT901B Playlist 3 4 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 45: ...k the Magnetic calibration button Step 3 Slowly rotate the module 360 around X Y Z 3 axis accordingly Step 4 After rotation click Magnetic Calibration Finish Check the result The Z axis angle will hav...

Страница 46: ...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 4 1 Arduino Download link Arduino UNO3 Demo Link...

Страница 47: ...WT901B manual v0707 http wiki wit motion com english 47 4 5 C DEMO link 4 6 Matlab Receive Sample Code Dataplot DEMO...

Страница 48: ...bus of the module is an open drain output When the MCU is connected to the module the IIC bus needs to be pulled up to VCC through a 4 7K resistor 2 VCC is 3 3V it must be connected to the power suppl...

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