olympum / oarsman

Application Interface for the WaterRower S4
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Heart rate shows up too high #4

Open 0x6c66 opened 5 years ago

0x6c66 commented 5 years ago

Hi @olympum, Thanks a lot for your work on this! Oarsman performs great at tracking my workouts.

I, however, noticed that the heart rate is getting logged at about 3x the normal value. (The S4 does show the correct values when rowing.) I am using the usual Polar heart rate receiver for waterrower and the T34 chest transmitter.

Here is an example of what I am seeing in the list/exports:

id,start_time,distance,duration,ave_speed,max_speed,ave_cadence,max_cadence,ave_power,max_power,calories,ave_hr,max_hr 1533144231195,2018-08-01T17:23:51Z,5388,1802,2.99,4.60,20,31,66,210,66,372,454 1533231580503,2018-08-02T17:39:40Z,1718,531,3.24,3.59,20,24,60,116,75,351,403 1533232548663,2018-08-02T17:55:48Z,2276,605,3.76,5.09,22,32,96,295,14,370,433

0x6c66 commented 5 years ago

It actually appears, that it's measuring the heart rate correctly for 30 seconds or so (at the beginning of a workout) before it starts logging it to high.

1533144252287 pulses_per_25ms:9
1533144252287 speed_cm_s:280
1533144252317 pulses_per_25ms:8
1533144252317 heart_rate:106                <--------
1533144252342 pulses_per_25ms:8
1533144252342 total_distance_meters:56
1533144252372 pulses_per_25ms:8
1533144252372 stroke_rate:21
1533144252400 pulses_per_25ms:9
1533144252400 watts:0
1533144252427 pulses_per_25ms:7
1533144252427 calories:2475
1533144252453 pulses_per_25ms:8
1533144252453 speed_cm_s:35
1533144252482 pulses_per_25ms:8
1533144252482 heart_rate:363                <--------
1533144252511 pulses_per_25ms:8
1533144252511 total_distance_meters:57