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A Driver's Physiological Monitoring System Based on Photodiode Sensor with Reflective Optics Element (車用反射式光學駕駛人生理感測系統)
  • 發布年度:2016
  • 主要類別:電動車與車輛電子
  • 次要類別:論文
  • 摘要

    駕駛者生理狀態監測系統在駕駛者生理狀況不穩定時,能發出警告以減少駕駛者因失能而對用路安全造成危害,減少交通安全事故。為即時監控駕駛者生理狀態,連續性且非侵入式的感測系統是較可行的方式,因此本文將以光學感測作為生理監測系統之發展目標。在現有的前端感測器光路架構中,採用光學設計者仍不多見,大多以光源與感測器直接面對待測體,無強化光訊號之元件。

    車輛中心已開發可強化光訊號發射與收集效率之光學元件,元件口徑≦5mm、集光效率≧50%,而自主開發的探頭及嵌入式平台雛形,其靜態測試血氧誤差率:1%、心跳:1%,可即時監控與預警各式生理狀態,若駕駛人有急性的不適症狀,可提早得知,藉此提升用路人的安全。

     

    Abstract - Developing a system to monitor the biological status of a driver is method to increase smart function of car. When the biological condition of driver is unstable, it can sound warning or provide the control strategy not only to reduce the possible damage to the road traffic safety caused by the driver’s disablement but also the quantity of the traffic accident. In order to monitor the biological status of the driver in real-time, a continuous and non-invasive sensing system is needed. The method to enhance physiological signals by the designed optical device is the emphasis in this research. A photodiode at the front end presents the less design in optics. For the most part, the light source and the photodiode will directly lighting and receiving on the object without the components to boost the optical signal. Therefore, we develop the optical components that can boost optical signal and light-collecting efficiency, where the component aperture ≦ 5mm and the light-collecting efficiency ≧ 50%. A prototype static error of SpO2: 1% and the heart rate: 1% can monitor and pre-alert the biological status in real-time. If the driver feels the acute discomfort, it can be notified in advance, so as to promote the safety of the road user.

    Keywords- Optical Design; Biological; Non-invasive