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HERMAN
OPERATING MODES
SET UP - Choose between Seconds or Hits for your training intervals, adjust the target threshold, select the feedback type, and clear results.
RUN is the workout mode. Herman prompts you through all the techniques in your workouts, powers the sensor, records your score, and provides feedback on your score.
REVIEW is the “how I have done?” mode. Review all saved scores from every technique in every workout.
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POWER
Herman works on 2 AA batteries.
The battery level indicators warn when it's time to change them.
Replacing the batteries does not impact the memory .
AUDIO
Herman makes an audio sound every impact in HITS mode and every second of the countdown in SECONDS mode increasing to two a second the last five seconds.
SCORES
Herman scores individual impacts and multiple impacts over pre-set intervals. The score numbers represent twice the measured g force.
HITS - Herman counts the number of times the strikes exceed the threshold during the training interval.
MAX - Herman keeps track of the strongest strike during the training interval.
AVG - The total power of hits divided by the number of hits during the training interval.
SCORE - Herman multiplies the number of hits by the average score. This is overall performance during the training interval for that technique and is the basis of the text feedback.
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STORING SCORES
Herman retains over 500 interval scores which can be viewed in the REVIEW Mode.
Power loss does not erase the stored data.
To prevent accidental deletions, there's a verification step before results can be cleared.
SCORING CALCULATION
The Herman sensors are queried every 10ms. The sensor returns the highest reading
for each axis (X,Y, and Z) that it has read since the last time it was
queried.
The value is subtracted from the resting/idle value for that axis.
Herman takes the three axis readings and determines the magnitude of the
sensor reading using standard vector math. This effectively takes into
account the energy from all three axis simultaneously.
Vector Magnitude = square root (X*X + Y*Y + Z*Z)
This value is then scaled from a digital reading to G forces knowing the
maximum reading on each sensor is 40G.
This value is then multiplied by 2 yielding the score for this sensor
reading. Effectively, the scores in Herman are two times the G force of the
impact. A score of 20 correlates to an impact of 10G on the accelerometer.
These readings are then processed to determine impacts. If the reading is
above the threshold then a process starts where a recoil timer is set and
all readings until the recoil timer expires are considered part of this
impact. The score for this impact gets the largest reading within that
time. Once the recoil timer expires this process restarts waiting for an
impact above the threshold.
FEEDBACK
Herman feedback is fun, immediate, and objective, providing satisfaction when things are going well, or motivation when it's time to step it up.
Feedback puts a trainer with you at all times with 15 levels of feedback.
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