All evaluation methods described in this study confirmed that the majority of impacts were generated by the catch plate, the lug, the conveyor belt, and the shaking rod, while the impacts caused by the tunnel only contributed a small portion: 7% in cumulative impact and 8% in maximum impact. It should be noted, however, that since the sensor was more than two times heavier than a real blueberry, the sensor was less likely to move laterally to hit the tunnel wall than a real blueberry.