Belt slip measurement system

A cold planer, comprising:

• a conveyor system including rollers and a conveyor belt configured to be driven by a motor;
• a frame configured to support the rollers;
• an arm having a pivot and connected to a side of the frame;
• a speed sensor mounted on the arm and comprising a wheel configured to ride along the conveyor belt or a roller of the rollers;
• and
• a controller communicably coupled with the speed sensor and the motor, the controller configured to:
• receive an indication of a speed of the motor;
• receive, from the speed sensor, an indication of a speed of the conveyor belt;
• and
• determine, based on the received indication of the speed of the motor and the received indication of the speed of the conveyor belt, an amount of belt slippage of the conveyor belt.

A method, comprising:

• receiving, from a motor of a conveyor system of a cold planer, an indication of a speed of the motor;
• receiving, from a speed sensor mounted on an arm having a pivot and connected to a side of a frame that supports rollers about which a conveyor belt of the conveyor system is configured to rotate, an indication of a speed of the conveyor belt, wherein the speed sensor comprises a wheel configured to ride along the conveyor belt or a roller of the rollers;
• determining, based on the received indication of the speed of the motor and the received indication of the speed of the conveyor belt, an amount of belt slippage of the conveyor belt;
• and
• calculating, based on the amount of belt slippage of the conveyor belt, a mass flow rate of material on the conveyor belt.