The driver fatigue monitor system played a crucial role in reducing traffic accidents and accelerating the development of intelligent transportation systems. This paper focused on optimizing and expanding the functionalities of existing systems. The varying functionalities of the systems were addressed at different chronological stages. Integrating driver fatigue monitor system with TRIZ theory and patent circumvention strategies from the conceptual design phase, the paper enhanced the nine-screen method to analyze the target system’s functionalities from past, present, and future perspectives. This integration led to the development of an expanded conceptual design scheme for a driver fatigue monitor system based on patent circumvention. The proposed scheme successfully navigated existing patent frameworks at the patent to avoid level and extends and improves the functionalities of the original concept at the conceptual design level. The feasibility of the scheme was demonstrated with the driver fatigue monitor systems as a case study.
State of the Road Fatigue Fact Sheet. Available online: [EB/OL]. accessed on 30 March 2017).
[2]
NGUYENT P, CHEWM T, DEMIDENKOS. Eye Tracking System to Detect Driver Drowsiness[C]∥2015 6th International Conference on Automation, Robotics and Applications (ICARA). Queenstown, 2015: 472-477.
ZHANGXibo, CHENGBo, FENGRuijia. Real-time Detection of Driver Drowsiness Based on Steering Performance[J]. Journal of Tsinghua University (Science and Technology), 2010, 50(7): 1072-1076.
[5]
GIELENJ, AERTSJ M. Feature Extraction and Evaluation for Driver Drowsiness Detection Based on Thermoregulation[J]. Applied Sciences, 2019, 9(17): 3555.
[6]
AWAISM, BADRUDDINN, DRIEBERGM. A Hybrid Approach to Detect Driver Drowsiness Utilizing Physiological Signals to Improve System Performance and Wearability[J]. Sensors, 2017, 17(9): 1991.
[7]
World Intellectual Property Indicators-2011 Edition[EB/OL].
[8]
JIANGPing, ZHAIJinjin, CHENZishun, et al. The Patent Design around Method Based on TRIZ[C]∥2009 IEEE International Conference on Industrial Engineering and Engineering Management. Beijing, 2009: 1067-1071.
WANGLiangwu. Research on the Application of TRIZ Theory in Product Patent Evasion and Software Development [D]. Guangzhou: Guangdong University of Technology, 2016.
LIHui, LIULimeng, ZHAOShaokui, et al. Study on Function Cutting Paths of Patent Design around for Mechanical Products[J]. China Mechanical Engineering, 2015, 26(19): 2581-2589.
[13]
LIUYanmin, JIANGPing, WANGWei, et al. Integrating Requirements Analysis and Design around Strategy for Designing around Patents[C]∥2011 IEEE 2nd International Conference on Computing, Control and Industrial Engineering. Wuhan, 2011: 29-32.
LIZuojin, LIRenjie, LIShengbo, et al. Driver Fatigue Recognition Based on Approximated Entropy and Complexity of Steering Wheel Angle[J]. Journal of Automotive Safety and Energy, 2016, 7(3): 279-284.
HUHongyu, GAOZhenhai. Driver Drowsiness Detection Based on Time Series Analysis of Steering Wheel Angular Velocity[C]∥2015 Proceedings of the Annual Conference of the Chinese Society of Automotive Engineering. Chongqing,2015: 60-62.
WANGXin, WUJian, SUNHan, et al. Design of Visual Detection and Early Warning System for Fatigue Driving Based on DSP[J]. Journal of Test and Measurement Technology, 2020, 34(6): 506-513.
XUWeijing, WANGDi, SHANChaoying. Research on Fatigue Driving Detection Technology Based on Video Monitoring[C]∥ Proceedings of the Sixteenth Annual Shen yang Science Symposium (Science, Technology, Agriculture and Medicine). Shenyang, 2019: 405-408.
[24]
王青. 基于3D CNN的疲劳驾驶预警系统的研究[D]. 南京: 南京邮电大学, 2019.
[25]
WANGQing. Wireless Wearable Fatigue Driving Early-warning System Based on 3D CNN [D]. Nanjing: Nanjing University of Posts and Telecommunications, 2019.
ZHUTianming, WUChunlong, ZHOUYoucheng, et al. Construction of Extended Collision Warning System Digital Twin Conceptual Scheme Based on TRIZ Functional Modeling[J]. Computer Integrated Manufacturing Systems, 2021, 27(2): 337-351.
LIULimeng, TANRunhua, ZHANGHuangao, et al. Research on the Process of Product Conceptual Design Based on the Scenarios and TRIZ[J]. Journal of Machine Design, 2021, 38(2): 15-22.
[34]
CHANGW, TSENGC, WULonglong. Conceptual Innovation of a Prosthetic Hand Using TRIZ[J]. Journal of the Chinese Society of Mechanical Engineers, 2008, 29(2): 111-120.
WUChunlong, ZHUTianming, ZHANGPeng, et al. Conceptual Scheme Construction of Smart PSS Based on Functional Model and AHP[J]. China Mechanical Engineering, 2020, 31(7): 853-864.
LIHong, XIAOYu, YANHuigeng. Application of Evolution Law of Technical System in Nine-screen Method[J]. Statistics and Management, 2013, 28(2): 145-146.