At present, ECDIS has been widely used in ship positioning, collision avoidance and navigation, and has developed into an important part of integrated navigation and automation system. However, most ECDIS software focuses too much on system function and technical level when realizing powerful navigation AIDS, neglecting the problems that the crew are most concerned about, such as realizing the human-computer interface operation quickly and simply as well as obtaining the information of human-computer interaction effectively and accurately. In order to improve the design of Electronic Chart Display and Information system（ECDIS）human-computer interface and its usability effectively, a new method for evaluating ECDIS human-computer interface is proposed. Starting from the concept and connotation of usability, five-factor personality model is used to measure the users’ personality type in reference to the essence of usability (user’s emotional experience) and calculate the basic emotional variant of users. Then, according to the users’ emotional stimulation after finishing the given ECDIS task and combining with the system Usability scale (SUS), a tool dedicated to usability testing and five dimensions of usability evaluation proposed by Jakob Nielsen, father of usability, the emotion relationship model of usability and users is established by using partial least square method ( PLS ), and the validity of the model is verified with an aim to locate the key indicators that affect the usability of the ECDIS human-computer interface, It will be more helpful to improve the usability of ECDIS human-computer interface.

Abstract
1. Introduction
2. Overview of usability
    2.1. Concept of usability.
    2.2 Evaluation methods for usability
3. Research methods
    3.1. Users’ emotion calculation and evaluation
    3.2. Usability testing tools
4. An example of usability evaluation of ecdis human-computer interface
    4.1.Experiment process
    4.2 . Data analysis and processing
5. Relation model between users’ emotion and ecdis usability
    5.1. Modeling and analysis
    5.2. Model validation
6. Conclusion
References

• Yongzhi Hao(Merchant Marine College, Shanghai Maritime University/Marine Navigation School, Zhejiang International Maritime College) Corresponding Author
• Pengjun Zheng(Faculty of Maritime and Transportation,Ningbo University)
• Yibing Wang(Marine Navigation School, Zhejiang International Maritime College)
• Tianming Yan(Marine Navigation School, Zhejiang International Maritime College)
• Zhihao Han(Marine Navigation School, Zhejiang International Maritime College)