Thanks for you all provide so many useful suggestions, it is the soure which drives us progess.
We found the disadvantage of 5KHz belt is the limition on contact or senstivite to vibration or contaminant.
We try to work hard to find out solution, now we found a rule to overcome the annoy problem.
The ideas is:
- To use HR zone4 to restrict the peak noise at start
- compare the each HR according to rising rate every minutes to filter duration noise
- Smoothness of curve
Of coures, we will consider to work on Software like smooth function as Garmin.
Also, the belowing link is the bench mark test result:http://photo.pchome.com.tw/dsjbabykimo/124167055417
--> test by ECG @ 80bpm with unstable belt http://photo.pchome.com.tw/dsjbabykimo/124168496497
--> field test
Please let me know if you have any ideas.