Related Manuals for WiT WT901SD
Summary of Contents for WiT WT901SD
- Page 1 USER MANUAL WT901SD Inclinometer Sensor Acceleration Data Logger WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 1 -...
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Page 2: Contact
Technical Support Contact Info Application ● AGV Truck ● Platform Stability ● Auto Safety System ● 3D Virtual Reality ● Industrial Control ● Robot ● Car Navigation ● UAV ● Truck-mounted Satellite Antenna Equipment WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 2 -... -
Page 3: Table Of Contents
2.4.3 Baud Rate ..................- 21 - 2.4.4 Calibrate Time ................. - 22 - 2.4.5 Data Recording ................- 23 - 2.4.6 Data Playback .................. - 25 - 2.4.7 File Conversion ................- 27 - WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 3 -... - Page 4 2.4.13 Set Extended Port ............... - 34 - 2.4.14 6-axis/ 9-axis Algorithm ............- 36 - 3 Offline Record ......................- 37 - 3.1 Instructions ....................- 37 - 3.2 Read Stored Date ..................- 38 - WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 4 -...
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Page 5: Introduction
Its strength lies in the algorithm which can calculate three-axis angle accurately. WT901SD is an CE standard accelerometer. It is employed where the highest measurement accuracy is required. WT901SD offers several advantages over competing sensor: •... -
Page 6: Warning Statement
For proper instrument grounding: use WITMOTION with its original factory-made cable or accessories. For secondary developing project or integration: use WITMOTION with its compiled sample code. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 6 -... -
Page 7: Use Instructions With Pc
Link to WT901SD’s demo video 2.1.1 Serial Connection Step 1. Connect the sensor with a serial converter PIN Connection: VCC - TX - RX - GND - GND (When connecting with computer, VCC-5V is recommended.) WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 7 -... - Page 8 Step 4. Open the software(Minimu.exe) Data will appear after auto-search finishes Notice: If not successful, please operate manually Choose the com port and baud rate 9600, data will be shown on the software. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 8 -...
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Page 9: Software Introduction
For manufacturer internal test only Auto-search Auto searching the sensor Port Com port selection Baud Baud rate selection Type Fixed setting as Normal for WT901SD Open Open com port Close Close com port WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 9 -... -
Page 10: Menu Of Configuration
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 time of chip Save Config Save configuration WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 10 -... - Page 11 HWT901B) Reset Z-axis Angle Reset Z-axis angle to 0 degree, not available for WT901SD in 9-axis algorithm Angle Reference Setting current angle as 0 degree Gyro Auto Calibrate Auto-calibration of gyroscope WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 11 -...
- Page 12 HWT901B, WTGAHRS2, WT901B, etc Location Latitude&Longitude data output, only available when the sensor connecting with GPS module, such as WTGAHRS1, WTGAHRS2 GPS IMU PDOP Ground velocity data output, only available WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 12 -...
- Page 13 Menu of Port D0 Model Extended port D0 D1 Model Extended port D1 D2 Model Extended port D2 D3 Model Extended port D3 Pulse width Pulse width of PWM Cycle Cycle of PWM WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 13 -...
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Page 14: Calibration
After calibration, the measurement will be accurate. Methods: Step 1. Keep the module horizontally stationary Step 2. Click the accelerometer calibration Step 3. Click the “Start calibration”and wait for 3 seconds Step 4. Click “Complete Calibration” WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 14 -... -
Page 15: Magnetic Field Calibration
Usually, the magnetic field sensor 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 heading Angle. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 15 -... - Page 16 Step 1. Open the Config menu Step 2. Click the magnetic field calibration button. click the “Start calibration” Step 3. Slowly rotate the module 360° around X, Y, Z, 3-axis accordingly WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 16 -...
- Page 17 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 create magnetic field interference. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 17 -...
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Page 18: Gyroscope Automatic Calibration
Z axis backs to 0 degree in the module data bar. 2.3.5 Reset Height to 0 Only available for the module built-in barometer like WT901B, HWT901B, WTGAHRS1, WTGAHRS2 WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 18 -... -
Page 19: Configuration
Taking WT901SD as an example, the default output of the module is acceleration, angular velocity, angle, and magnetic field. Notice: If choosing the GPS Original, there will be no other data output. -
Page 20: Output Rate
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. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 20 -... -
Page 21: Baud Rate
Note: After the change, the module will no longer output data at the original baud rate. The data will be output only when the baud rate that has been changed is selected on the PC software again. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 21 -... -
Page 22: Calibrate Time
2.4.4 Calibrate Time Method: Step 1: Click “Calibrate Time” in the “ Config” Step 2: Click “Time” Step 3: Notification will be shown if successfully calibrated Step 4. Click “Save Config” WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 22 -... -
Page 23: Data Recording
2.4.5 Data Recording Method are as follows: Step 1: Click “Record” and “Begin” Step 2: Click “Stop” WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 23 -... - Page 24 Windows system’s time. The changes in other data is correct. It is highly recommended that data can be pasted to an Excel file. In this way, all data will be shown in order. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 24 -...
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Page 25: Data Playback
Recorded data playback method: Step 1: Disconnect the sensor Step 2: Click “File” Button and then click “Load” Step 3: Choose the original path of software installation and load the Bin file WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 25 -... - Page 26 Step 4: Click “Run” and the Binary file will be playback When playback, the rate can be editable. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 26 -...
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Page 27: File Conversion
Step 1: After the data can be played back, click "File Conversion". Step 2: After the conversion reaches 100%, it will pop up whether to open the converted document and the path of the converted document. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 27 -... -
Page 28: Standby And Wake Up
Wake up: The module enters the working state from the standby state. The module defaults to a working state, in the“Config”of the software, click “Sleep”option to enter the sleep state, click“Sleep”again to release sleep. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 28 -... -
Page 29: Placement Direction
Step 1: Rotate the module 90 degrees around the X-axis Step 2: Place the sensor 90 degrees vertically Step 3: Click “Vertical” as install directions on “Config” menu WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 29 -... -
Page 30: Bandwidth
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 example: Bandwidth as 20Hz, Output rate as 10Hz. The waveform is very steady. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 30 -... - Page 31 For example, if the bandwidth setting is 20Hz, retrieval rate as 100Hz, there will be 5 repeating data. If you prefer there is no repeating data, it is required to increase the bandwidth more than 100Hz. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 31 -...
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Page 32: Restore Factory Setting
2 seconds. The LED is off, and the factory reset operation is completed. Command method: connect the WT901SD module and the computer through the USB-TTL module, click the setting tab, and click to restore the default. After restoring the factory settings, power on the module again. (This method needs... -
Page 33: Set Iic Address
16 hexadecimal IIC address and click the “change” button. Reminder: The IIC address of the module will not be changed immediately, and it will take effect when the module restart. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 33 -... -
Page 34: Set Extended Port
2.4.13 Set Extended Port The WT901SD module has 4 multiple function extended ports, which can be set to different functions according to the need. Set extended port only when the module connects to the PC software successfully. The extended port supports analog input mode, digital input mode, digital output mode, PWM output mode. - Page 35 WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 35 -...
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Page 36: 6-Axis/ 9-Axis Algorithm
9-axis algorithm: Z-axis angle is mainly calculated and analyzed based on the magnetic field. Z-axis angle will have few drift. The default algorithm of WT901SD is 9-axis. If there is magnetic field interference around installed environment, it is recommended to switch to 6-axis algorithm to detect the angle. -
Page 37: Offline Record
Step 2. Power the module by a 3.3-5V battery. After the module is powered on (1~2S), the module starts to work and stores data. Step 3: The data will be stored in the TXT file in hexadecimal output. WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 37 -... -
Page 38: Read Stored Date
Word open is an ASCLL garbled, you need to open the file with a software that can open hexadecimal numbers. Step 1. Remove the SD card and insert it into the card reader Step 2. Plugin the reader and Open Minimu.exe WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 38 -... - Page 39 Step 3. Select the recorded file from the USB Drive path and load the recorded file, click the “Run” and data will be playback WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 39 -...
- Page 40 Step 4. Convert the recorded file to txt format when the file is 100% loaded. It would be better to review. (Please refer to Chapter 2.4.7 File Conversion) WT901SD | manual v0707 | http://wiki.wit-motion.com/english - 40 -...
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