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Difference between revisions of "Human Vibration"
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====In the toolkit==== | ====In the toolkit==== | ||
Before calculating the indicators in the toolkit, you must define a filter for each directions. Filters will be selected in accordance with the wanted result (Hand-arms; Whole-Body, ..) and the direction of the measurement as specified in the table [[Human_Vibration#Time-weighting_filters|describing the filters]]. Filters will be applied to the signal before calculating the indicators, but the time-filtered signal will not be saved. <br><br> | Before calculating the indicators in the toolkit, you must define a filter for each directions. Filters will be selected in accordance with the wanted result (Hand-arms; Whole-Body, ..) and the direction of the measurement as specified in the table [[Human_Vibration#Time-weighting_filters|describing the filters]]. Filters will be applied to the signal before calculating the indicators, but the time-filtered signal will not be saved. <br><br> | ||
[[Image:proc_filt.png]] | [[Image:proc_filt.png|500px]] | ||
<br> | |||
You will then need to enter the reference time you want to use to estimate the parameters on a greater duration. This duration must be entered in second. The default value is 288500 second, corresponding to a 8 hours measurement:<br><br> | You will then need to enter the reference time you want to use to estimate the parameters on a greater duration. This duration must be entered in second. The default value is 288500 second, corresponding to a 8 hours measurement:<br><br> | ||
[[Image:Ref_Time.png]] | [[Image:Ref_Time.png|500px]] | ||
You will finally need to enter the MTVV Tau value. The MTVV Tau is the integration time in seconds used for the calculation of the MTVV. The ISO 2651 recommand to use 1sec. This is the default value of the setting.<br> | You will finally need to enter the MTVV Tau value. The MTVV Tau is the integration time in seconds used for the calculation of the MTVV. The ISO 2651 recommand to use 1sec. This is the default value of the setting.<br> | ||
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Here, we are calculating all the indicator for the "Seat_Pad_Measurement" signal. This signal contain 3 Tracks, one for each channel X, Y and Z of a three axis accelerometer. As we want to calculate the multi-axis metrics, we also define a sensor on the three tracks, called "Seat_Pas_3axis". <br><br> | Here, we are calculating all the indicator for the "Seat_Pad_Measurement" signal. This signal contain 3 Tracks, one for each channel X, Y and Z of a three axis accelerometer. As we want to calculate the multi-axis metrics, we also define a sensor on the three tracks, called "Seat_Pas_3axis". <br><br> | ||
[[Image:Set_up_seatPad.png]] | [[Image:Set_up_seatPad.png|500px]] | ||
<br> | <br> | ||
Once completed, the result can be find the currently opened project in the [[NVGate Project manager]]. A new measurement called "NAME_OF_THE_Signal_out" containing the result is created. <br> | Once completed, the result can be find the currently opened project in the [[NVGate Project manager]]. A new measurement called "NAME_OF_THE_Signal_out" containing the result is created. <br> | ||
[[Image:ResInProjMAn2.png]]<br> | [[Image:ResInProjMAn2.png|500px]]<br> | ||
Each indicator is calculated for each direction and for each track of the signal. The name of the result contain the name of the track, the considered direction and the filter used for that direction (except for the <math>D_k</math> which use specific filters).<br> | Each indicator is calculated for each direction and for each track of the signal. The name of the result contain the name of the track, the considered direction and the filter used for that direction (except for the <math>D_k</math> which use specific filters).<br> | ||
The following picture show the indicators for the first track (SeatPadX) of the signal : <br><br> | The following picture show the indicators for the first track (SeatPadX) of the signal : <br><br> | ||
[[Image:Resut_SeatPad.png]] | [[Image:Resut_SeatPad.png|500px]] | ||
<br> | <br> | ||
You can then display the result in NVGate by double clicking. | You can then display the result in NVGate by double clicking. | ||
<br> | <br> | ||
For the metrics estimated on the "Reference Time", the name the indicator is followed by "(Ref_Time_in_Second"). Here an example with the VDV metric, the name of the indicator is displayed in the window title : <br> | For the metrics estimated on the "Reference Time", the name the indicator is followed by "(Ref_Time_in_Second"). Here an example with the VDV metric, the name of the indicator is displayed in the window title : <br> | ||
[[Image:VDV_andTexp.png]] | [[Image:VDV_andTexp.png|500px]] | ||
<br> | <br> | ||
==Calculating the other indicators with NVGate== | ==Calculating the other indicators with NVGate== | ||
===<math>A_w</math>=== | ===<math>A_w</math>=== | ||