Embodiments relate to exercise systems, and more particularly to exercise cycles and systems for generating exercise programs simulating real-world terrain. The detection unit detects a conduction current flowing from a battery to a brushless motor and outputs a conduction current signal corresponding to the detected conduction current. Other embodiments are described and claimed. When the chip component is carried on the second rotary disc, the lower surface and the other side face of the chip component are imaged by third and fourth cameras. The receiver resumes normal displaying of the transmissions at the end of the broadcasting of the audiovisual transmissions of a certain type.