使用ble协议的IMU数据格式很奇怪。

Question

我正在处理IMU数据，这些数据是在BLE协议下使用腕表收集的，读数对我来说是不可解释的：

"data":"eyJBWCI6MC42OTksIkFZIjowLjY2NiwiQVoiOjAuMjIyLCJHWCI6MTYuMjk2LCJHWSI6OS44ODcsIkdaIjotMTMuODU1fQ=="，"from":{"Name":"wristband-d5"，"Protocol":"BLE"}，"datetime":"2021-10-31T12:37:21.1352384-04:00"，"type":0

提前谢谢

Answer 1

此数据似乎是Base64编码的。我使用Python对其进行了如下解码：

$ python3
Python 3.9.2 (default, Mar 12 2021, 04:06:34) 
[GCC 10.2.1 20210110] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> data = "eyJBWCI6MC42OTksIkFZIjowLjY2NiwiQVoiOjAuMjIyLCJHWCI6MTYuMjk2LCJHWSI6OS44ODcsIkdaIjotMTMuODU1fQ=="
>>> from base64 import b64decode
>>> b64decode(data)
b'{"AX":0.699,"AY":0.666,"AZ":0.222,"GX":16.296,"GY":9.887,"GZ":-13.855}'
>>>