Concrete mixer vehicle with autonomous slump check

A concrete mixer truck, comprising:

• a chassis;
• an engine supported on the chassis;
• a mixing drum supported on the chassis;
• a motor configured to rotate the mixing drum;
• a slump sensor configured to measure a pressure correlated with a slump of a mixture within the mixing drum;
• a user interface;
• and
• a controller in communication with the engine, the motor, the slump sensor, and the user interface, the controller being configured to:
• receive an initiate command from the user interface for a slump check procedure;
• verify an interlock criteria is satisfied;
• in response to the interlock criteria being satisfied, initiate the slump check procedure and command the motor to a slump check state;
• average the pressure from the slump sensor for a predetermined amount of time;
• and
• calculate a slump value based on the average of the pressure measured by the slump sensor.

A method for an autonomous slump check procedure on a concrete mixer truck, the method comprising:

• receiving, from a user interface, an initiate command;
• verifying an interlock criteria is satisfied;
• and
• in response to verifying that the interlock criteria is satisfied, initiating a slump check procedure by:
• commanding a motor to a slump check state;
• averaging a pressure from a slump sensor for a predetermined amount of time;
• and
• calculating a slump value based on the average of the pressure measured by the slump sensor over the predetermined amount of time.