In this study, a dynamic tension test and an intelligent coordinated control system were designed for the monitoring of the dynamic tension of a heavy scraper conveyor and the realisation of coordinated control for driving scraper conveyor sprockets under a heavy load. As a subsystem, the dynamic tension test system is composed of strain gages, a wireless signal-transmitting device, and a piezoelectric energy harvester. The strain gages were installed in the chains meshed with the scrapers to measure the dynamic tension. The wireless signal-transmitting device was used to transmit a weak strain signal. The piezoelectric energy harvester was used to power both the strain gages and the wireless signal-transmitting device. In addition, the coordinated control system, which was established using a parameter self-tuning fuzzy proportion, integration and differentiation controller was used to adjust the load balance and the dynamic tension between the two driving sprockets. The tested values demonstrated the effectiveness of the proposed dynamic tension test system and its self-power stability. Furthermore, experiment results using the coordinated control system indicated its ability to balance the load and dynamic tension between the two driving sprockets. Hence, the maintenance cycle and service life of the heavy scraper conveyor were extended, and the maintenance cost and energy consumption were reduced.