关键词: 不确定性, 信任模型, CT信任模型, 传感器网络

Abstract: Noises in a node usually cause uncertain data in Multi-Sensor Networks（MSN）.People want the best social benefit under such circumstances and with limit band-width，but the node agents are selfish and rational，and always want to maximize their gains，so the trust is a very important factor.Thus，the Certain Trust（CT） model is applied on MSN.The sensor can pay fewer premiums for a better POS（Possibility of Success） to complete the task，and maximize their gains from a market and obtain the best social benefit at the same time.It is simulated by java program and good performance is achieved to prove the superiority of this scheme.

Key words: uncertainty, trust model, CT trust model, sensor network