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telemetry_data:channel_descriptions
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Channel Descriptions
These data sets include measured data from the sensors, derived values using measured data, and data resulting from modeling. Modeling is necessary to better understand and to make better use of the measured data.
| Channel Name | Format or units | Example | Data Group | Description |
|---|---|---|---|---|
| obc_timeStamp | YYYY_MMDD_ hhmm_ss.sss | 2017_0430_ 1844_18.200 | OBC | Timestamp from operating system of on-board computer. |
| obc_sensor | string | LFM | OBC | String representing type of energy: LFM = Liquid Flow Meter. |
| gps_validity | state | ok | GPS | String representing GPS measurement validity: “ok” or “nok”. |
| gps_utcTime | YYYY_MMDD_ hhmm_ss.sss | 2017_0430_ 1844_17.000 | GPS | Timestamp from GPS sensor. Updates once per second. |
| gps_latitude | degrees | 42.327805 | GPS | Latitude position from GPS. |
| gps_longitude | degrees | -83.048379 | GPS | Longitude position from GPS. |
| gps_fixQuality | none | 1 | GPS | Quality of location values from GPS. |
| gps_dilution | none | 0.8 | GPS | Strength of GPS signal. |
| gps_speed | km/hr | 10.9 | GPS | Vehicle speed from GPS. Updates once per second. |
| jm_netJoule | J | 5482 | JM | Net Joules measured by Joule Meter. |
| jm_voltage | mV | 12353 | JM | Instantaneous voltage measured by Joule Meter. |
| jm_current | mA | 12342 | JM | Instantaneous current measured by Joule Meter. |
| lfm_temperature | degC | 18.1 | LFM | Temperature of fuel measured by Liquid Flow Meter. |
| lfm_integratedCorrFlow | mL | 6.4468 | LFM | Volume of fuel consumed since last reset measured by Liquid Flow Meter. |
| lfm_instantFlow | mL/min | 19.0278 | LFM | Instantaneous flow rate of fuel measured by Liquid Flow Meter. |
| gfs_gasFlow | m^3/min | GFS | Instantaneous flow rate of gas measured by Gas Flow Sensor. | |
| gfs_gasTemp | degC | GFS | Temperature of gas measured by Gas Flow Sensor. | |
| gfs_netGasVolume | m^3 | GFS | Volume of gas consumed since last reset measured by Gas Flow Sensor. | |
| Lap | Number | 0 | Post GPS | Lap counter based on GPS position (subject to GPS strength). |
| GPS Delta Distance (m) | m | 1.986111 | Post GPS | Difference in position since last GPS update. |
| GPS Distance (m) | m | 907.180556 | Post GPS | Integrated distance since last reset. |
| GPS Speed (m/s) | m/s | 3.027778 | Post GPS | Vehicle speed from GPS. Updates once per second. Converted to m/s for post processing purposes. |
| Acceleration (m/s^2) | m/s2 | 2.166422 | Post GPS | Vehicle acceleration calculated from GPS vehicle speed. |
| Grade | m/m | 0 | Post GPS | Grade of track based on GPS position (not yet implemented). |
| e_accel | W | 781.196104 | Post RL | Physics-based modelling: Power component for vehicle acceleration.(may not be available for some cars) |
| e_grade | W | 0 | Post RL | Physics-based modelling: Power component for grade. may not be available for some cars) |
| Roll Resistance coef | 0.007543 | Post RL | Physics-based modelling: Coefficient for rolling resistance based on tire pressure and vehicle speed. may not be available for some cars) | |
| e_roll_resistance | W | 23.456789 | Post RL | Physics-based modelling: Power component for roll resistance. may not be available for some cars) |
| e_drag | W | 23.456789 | Post RL | Physics-based modelling: Power component for drag. may not be available for some cars) |
| e_Road_Load_Total | W | 923.456789 | Post RL | Physics-based modelling: Total of all power components. may not be available for some cars) |
| e_Road_Load_netJoules | J | Post RL | Physics-based modelling: Total road load energy since last reset. may not be available for some cars) | |
| e_Road_Load_Total_Force | N | Post RL | Physics-based modelling: Force required to overcome total of all road load power components. may not be available for some cars) | |
| e_Road_Load_Work | kw*hr | Post RL | Physics-based modelling: Energy to overcome all road load components during this sample interval. may not be available for some cars) | |
| LFM_corr_int | mL | 0.001234 | Post LFM | Volume of fuel consumed since last sample measured by Liquid Flow Meter corrected for 15°C density |
| LFM_corr | mL | 85.678987 | Post LFM | Volume of fuel consumed since last reset measured by Liquid Flow Meter. |
| LFM Flow Rate d15 mL/min | mL/min | 123.456789 | Post LFM | Instantaneous flow rate of fuel measured by Liquid Flow Meter. |
| LFM Integrated Fuel Economy d15 km/L | km/L | 543.987654 | Post LFM & GPS | Overall fuel economy since last reset up to current point in time. |
| LFM Instant BSFC | g/kW-hr | 543.987654 | Post LFM & RL | Estimated fuel efficiency in terms of energy consumed as grams of fuel versus energy needed to overcome road load. |
Log In (for D&T Team and Volunteers ONLY) telemetry_data/channel_descriptions.1613061456.txt.gz · Last modified: 2021/02/11 16:37 by 127.0.0.1