S3Bike: An Electrically Assisted Cycle Monitored in Heart Beat to Help People with Heart Problem - Tests and Choice of the Best Heart Rate Sensor

摘要

Many older people give up all physical activities because of their feeling of insecurity outdoors. In parallel, the number of Electrically Assisted Cycles (EAC) in the cities increases significantly. Purpose: The aim of the current study is to know if it's possible to monitor their heart rate via an EAC to give a secure access to locomotion of people under medical advice. Methods: It is two-fold: For all the experiments, our reference is the Polar H7 chest strap. First, we compared different sensor's positions during a 30 seconds' effort test indoors on a healthy subject. Then, we studied the repeatability and the reproducibility of the PulseSensor placed on the cyclist's earlobe during rest and test efforts on two samples of 12 health subjects. Results: The PulseSensor placed on the earlobe is reliable indoors. Conclusion: The PulseSensor can be a good sensor to monitor an EAC in heart rate. But we need to design a system to integrate all the electronic directly on the cyclist and his helmet and to protect it from the outdoors interactions like the exposure to the sun, the humidity or the cyclist's perspiration.