Body motion Detection using LIS2DH/LIS3DH

[shady]

Posted on September 08, 2015 at 14:18

Dear All,

I am writing a firmware that is supposed to detect if a body is moved for a certain time i.e. 3 seconds of continuous motion. I am using LIS3DH Accelerometer sensor. Here is the configuration registers values:

CTRL_REG1 = 0x2F          //Enable all axes + ODR = 10 Hz

CTRL_REG2 = 0x00          //Default

CTRL_REG3 = 0x40          //Enable AO1 interrupt on INT1

CTRL_REG4 = 0xB0          //16G full scale

CTRL_REG5  = 0x00          //Default

CTRL_REG6 = 0x00          //Default

INT1_CFG = 0x7F         //6D movement recognetion

INT1_THS = 0x02         //Note FS = 16G. (Sensitivity = 0.25G)

INT1_DURATION = 0x1E         //0x1E = 30. Note ODR = 10 Hz. (Threshold = 3 Sec)

What I got is that if the body is moved for time 

less than

 3 seconds, the Accelerometer consider it as an event and interrupt the Micro-controller after 3 seconds. I think by this configurations it has to neglect such motions (which period is less than 3 seconds).

Any one can help me in detecting only motions which period is greater than 3 seconds?

Thanks in advance

#accelerometer #mems-accelerometer

[shady]

Posted on October 21, 2015 at 15:05

Please anyone is here ???

[Winfred LU]

Posted on October 26, 2015 at 09:13

I think you mis-understood the 6D movement detection.

Instead of body movement, it is actually 6 direction function which tells you the orientation of the device.

[jokerlove]

你好，我目前和你有类似的需求，但我做连续的身体投掷，所以我想问一下你是否可以分享你的lis3dh配置？我将不胜感激！！