HAV Points per Hour Trigger Time Calculator
Invert explicit caller vibration point calibration/budget after actual accumulated dose, preserving overdraw; not a hidden regulatory action threshold or permitted trigger-time recommendation.
Description
Vibration points can be inverted into remaining exposure time under explicit caller calibration.
Vibration points can be inverted into remaining exposure time under explicit caller calibration. A negative budget margin remains visible.1
Enter positive measured/reference acceleration and reference points rate, plus nonnegative accumulated points/budget. Return modeled rate, signed remainder and max(0,remainder)/rate hours.
When to use HAV Points per Hour Trigger Time Calculator
Use HAV Points per Hour Trigger Time Calculator when you need to evaluate the supplied records under the calculation and evidence rules below. No regulatory threshold or permitted trigger-time recommendation is inferred.
Prepare measured task, body, furniture or already weighted exposure records. Supply independently verified caller policies, tables and comparison limits with matching units and conditions.
How to use HAV Points per Hour Trigger Time Calculator and understand its results
- Prepare measured task, body, furniture or already weighted exposure records. Supply independently verified caller policies, tables and comparison limits with matching units and conditions.
- Enter measuredWeightedRmsAcceleration, callerReferenceAcceleration, callerPointsPerReferenceHour, alreadyAccumulatedPoints, callerPointBudget using the field table and calculation rules, then run the tool.
- Read modeledPointsPerHour, signedRemainingPointBudget, maximumNonnegativeAdditionalHours. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| measuredWeightedRmsAcceleration | Measured weighted rms acceleration | number | Required |
| callerReferenceAcceleration | Caller reference acceleration | number | Required |
| callerPointsPerReferenceHour | Caller points per reference hour | number | Required |
| alreadyAccumulatedPoints | Already accumulated points | number | Required |
| callerPointBudget | Caller point budget | number | Required |
Enter positive measured/reference acceleration and reference points rate, plus nonnegative accumulated points/budget. Return modeled rate, signed remainder and max(0,remainder)/rate hours.
rate=referencePoints/hour×(measuredAcceleration/referenceAcceleration)² Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| modeledPointsPerHour | Modeled points per hour | number |
| signedRemainingPointBudget | Signed remaining point budget | number |
| maximumNonnegativeAdditionalHours | Maximum nonnegative additional hours | number |
{
"input": {
"measuredWeightedRmsAcceleration": 5,
"callerReferenceAcceleration": 2.5,
"callerPointsPerReferenceHour": 12.5,
"alreadyAccumulatedPoints": 50,
"callerPointBudget": 100
},
"output": {
"modeledPointsPerHour": 50,
"signedRemainingPointBudget": 50,
"maximumNonnegativeAdditionalHours": 1
}
}Limitations and assumptions
No regulatory threshold or permitted trigger-time recommendation is inferred.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Hand-Arm Vibration A(8) Daily Exposure Calculator: A(8) normalizes the squared vector sum of already weighted hand-arm acceleration to eight hours. Raw axes need prior frequency weighting. For a complementary task, use Whole-Body Vibration VDV Estimate Calculator: Vibration dose value weights acceleration to the fourth power. Represented transient bins differ from a single RMS summary.
References
Similar or alternative tools
- Hand-Arm Vibration A(8) Daily Exposure Calculator
A(8) normalizes the squared vector sum of already weighted hand-arm acceleration to eight hours. Raw axes need prior frequency weighting.
- Whole-Body Vibration VDV Estimate Calculator
Vibration dose value weights acceleration to the fourth power. Represented transient bins differ from a single RMS summary.