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WhatsApp:+86 13652339539 E-mail:[email protected] Web:https://wiki.wit-motion.com/english
HWT31 High Attitude Angle Senor
SPECIFICATION
Model : HWT31
Description :High precision 2 axis attitude angle sensor
Quality control system standard: ISO9001:2016
Tilt switch production standard:GB/T191SJ 20873-2016
Criterion of detection:GB/T191SJ 20873-2016
Revision date:2019.12.17
Link to tutorial of HWT31 :(software, manual, etc.):
https://drive.google.com/file/d/1gKsY0beKHkvC_4E90ObW40cTSKM0RDnH/
https://wiki.wit-motion.com/english
WhatsApp:+86 13652339539 E-mail:[email protected] Web:https://wiki.wit-motion.com/english
Catalog
1 Description...................................................................................................- 3 -
2 Product parameters...................................................................................... - 3 -
3 Pin description............................................................................................. - 4 -
4 Axial direction............................................................................................. - 5 -
5 Connection...................................................................................................- 5 -
5.1 Connect with PC software.................................................................- 6 -
5.2 Connect to Phone.............................................................................. - 8 -
5.3 calibration(calibration on PC software).......................................... - 12 -
5.3.1 Accelerometer calibration....................................................... - 12 -
5.4 Data recording.................................................................................- 13 -
5.5 Dormancy and break dormancy...................................................... - 14 -
5.6 measure width................................................................................. - 14 -
6 Application area.........................................................................................- 16 -
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1 Description
The HWT31 uses the SCA3300-D01, a high-performance three axis acceleration sensor
based on MURATA's long-term proven capacitive 3D-MEMS technology. The SCA3300-D01
is packaged in a 12-pin plastic case with integrated block sensing components and ASIC
application circuitry. The processed sensor signals are output by a flexible SPI interface. The
design, production and testing of the product are carried out in accordance with high
stability, high reliability and high quality performance requirements. So, the product has an
extremely stable output over a wide range of temperatures and vibrations and is also
self-testing.
An internal voltage stabilizing circuit module, voltage 3.3v~5v, pin compatible with the
3.3V/5V embedded system.
The advanced Kalman filtering technology of this product can effectively reduce the
measurement noise and improve the measurement accuracy.
Stamp hole gold plating PCB design, can be embedded in the user´s PCB board.
2 Product parameters
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1) Voltage: 3.3V-5V
2) Current: 5.5~6 mA
3) Size : 15.24mmx 15.24mm X 5mm
4) Pad pitch: up and down100mil (2.54mm), left and right 600mil(15.24mm).
5) Measuring dimensions:
Acceleration: X Y Z
Angular Velocity: X Y
6) Range: Acceleration:±16g
Angle: ±90°
7) Temperature compensation.
8) Attitude stabilization measurement: 0.05°
9) Acceleration precision: ±15mg.
10) Error: 0.05°
11) Data output: time, acceleration, angle.
12) Data output frequency 10Hz.
13) Baud rate: 115200
14) Extended port function: Digital output
3 Pin description
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Note: D0 D1 No function
4 Axial direction
As shown in the figure above, the coordinates of the module are indicated, and
the right is the X-axis, the upper is Y axis, the Z axis is perpendicular to the surface
of the paper to yourself. The direction of rotation is defined by the right hand rule.
that is, the thumb of the right hand is pointed to the axial direction, and the four is
the direction of the bending of the right hand.
5 Connection
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5.1 Connect with PC software
Note: Please download .net framework4.0 the users who cannot run the PC Software:http://www.microsoft.com/zh-cn/download/details.aspx?id=17718
Hardware connection :
VCC = 3.3V , TX = RX ,RX = TX, GND = GND
Module 6 in 1 Convert:
Driver installation:
Fisrt, install the driver CP2102 when we used the USB serial module ,after installed
the driver. then get the corresponding Com number in the device manager. Driver
as followed:
https://wiki.wit-motion.com/english/doku.php?id=communication_module
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Then Open the software “MiniIMU.exe” and select the Com number
which you have got in the device manager before.
Click the menu “Type” , Select the model as “WT31” in the software.
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Click the menu “Baud ”in the software and then select 115200, then the software
will show the data.
5.2 Connect to Phone
1) Install the app in the Phone, then turn on the Bluetooth in the Phone.
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APP download address:
https://wiki.wit-motion.com/english/doku.php?id=module
2)choose WT301
3)choose 115200
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Then the data will show
4) Calibration(calibration on phone)
Please keep the HWT31 on the horizontal level and make the “acceleration
calibration” as below:
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1) Accelerometer Calibration
The accelerometer calibration is used to remove the zero bias of the
accelerometer. When the sensor is out of the factory, there will be different
degrees of bias error. After manual calibration, the measurement will be
accurate.
1、Methods as below: Firstly keep the module horizontally stationary, click
“Acceleration”, after 1~2s the acceleration X Y Z value will at 0 0 1. X Y angle:
0°.After calibration the value will be accurate.
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5.3calibration(calibration on PC software)
5.3.1 Accelerometer calibration
The accelerometer calibration is used to get rid of the null bias of the
accelerometer. There will be different degrees of null bias in the sensors when they
firstly came out of the factory.
The calibration method is as follows:
Firstly, the module is kept horizontal and static, and the calibration is added. After
1 to 2 seconds, the three axial values of the module acceleration will be around 0 0
1 and the X and Y axis angles will be around 0°. The X Y-axis angle is more accurate
after calibration.
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5.4 Data recording
There is no memory chip inside the sensor module,but the data can be saved by
PC software
Attention:The button ”Record ” can save the data as a file.
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The saved files in the PC software Data.tsv:
5.5Dormancy and break dormancy
Dormancy:The module pauses working and enters the standby state, dormancy
can reduce power consumption.
Break dormancy:The module enters the working state from the standby state.
How to use:The default state of the module is working state,Click “Sleep”in the
“config”of the PC software to enter the standby state, click “Sleep” again the
module will break the dormancy.
5.6measure width
Retrieval Rate: The module output the data within the measurement Retrieval
Rate. Data greater than bandwidth is automatically filtered out.
How to use:Click the “Retrieval Rate” of the “config ” in the PC software.
default is 10 HZ.
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PS: The default setting of Static threshold and bandwidth works in most case. you
should not set it any more.
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6 Application areaAgricultural machinery Internet of things
Solar energ Power monitoring
Medical instruments Construction machinery
Geological monitoring
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WitMotion ShenZhen Co., Ltd
HWT31 Temp-compensation Accelerometer
Contact: Mr. Kyle Tsang
E-mail : [email protected]
Skype: live:kyle_8394
WhatsApp: +86 136 523 39539
Amazon in USA: www.amazon.com/witmotion
Amazon in Canada: www.amazon.ca/witmotion
Amazon in Japan: www.amazon.co.jp/witmotion
Official Direct Store: www.aliexpress.com/store/4709011
Address : Honghai building 1405 Songgang town Baoan District
Shenzhen Guangdong Province China