Tongue weight determination

A system comprising:

• one or more accelerometers that sense acceleration of the system;
• a vehicle pitch and roll module that determines filtered data based on the vehicle pitch, roll or both, and altering accelerometer data based on the filtered data;
• an interface module that retrieves one or more vehicle performance parameters, the vehicle performance parameters comprising at least one of parameters from a data interface for the vehicle and/or measurements from the one or more accelerometers;
• a performance module that determines whether the vehicle performance parameters fall within respective threshold ranges;
• a data module that stores, in response to the vehicle performance parameters being within the respective threshold ranges, a plurality of data pairs, each data pair comprising the longitudinal acceleration of the vehicle and a drive force for the vehicle, the drive force determined according to a calibrated polynomial for a current velocity of the vehicle;
• a weight module that determines the weight being hauled by the vehicle by determining a slope of a line that linearly approximates the plurality of data pairs, the slope of the line indicating a total weight, the total weight comprising a weight of the vehicle and a weight being hauled by the vehicle;
• a tongue weight module that determines tongue weight from vehicle weight, total weight and delta pitch;
• an output module that transmits the tongue weight to a display;
• and
• an operation module that transmits operation instructions to a vehicle control system to enable adjustment to the operation of the vehicle.

A non-transitory computer readable storage medium storing executable instructions thereon, which, when executed by a processor, cause the processor to perform operations including:

• retrieving one or more performance parameters for a vehicle by one of communicating with diagnostic port for the vehicle and communicating with one or more accelerometers providing accelerometer data;
• determining filtered data based on the vehicle pitch, roll or both;
• altering the accelerometer data based on the filtered data;
• determining that one or more vehicle performance parameters fall within a threshold range;
• storing, in response to the vehicle parameters being within the respective threshold ranges, a plurality of data pairs, each data pair comprising a longitudinal acceleration and a drive force, the drive force determined according to a calibrated polynomial for a current velocity of the vehicle;
• determining a slope of a line that linearly approximates the plurality of data pairs, the slope indicating a total weight, the total weight comprising a weight of the vehicle and a weight being hauled by the vehicle;
• determining tongue weight from vehicle weight, total weight and delta pitch;
• and
• transmitting the tongue weight to a remote system for display.