Archers and swimmers use VTT sensors to improve performance

The low cost MEMs sensors have been attached to swimmer’s hand paddles and archers’ equipment to obtain and wirelessly transfer performance data to the coach’s smartphone or tablet. According to Raimo Korhonen, head of Research Area at VTT, the wireless sensor technology could also be embedded in ski poles, skis, racquets, bicycles, and even be used in equestrian sports.

The sensors embedded in swimmer’s paddles have been designed to provide precise and varied data on the wearer’s swimming technique.

According to VTT, this covers stroke length and changes in it during swimming, the relationship between the outward stroke and recovery, the structure of the stroke and the average pull, the hand position and the pressure exerted by the stroke in different directions.

“The sensors have inbuilt calibration algorithms that are used in the prototype,” Dr Petteri Alahuhta, business development manager, VTT told The Engineer via email. “Characteristics of the swimming are extracted later by an algorithm and analysing the sensor data.”