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

摘要： 传感器网络中，节点中的噪声将会导致数据的不确定性。人们总希望在不确定情况下和有限带宽内使系统获得最大利益。而节点代理却是自私的、理性的，并且要使自己利益最大化。这时信任问题变得非常重要。把Certain Trust（CT）信任模型用于多传感器网络的信息交易中，使代理在交易过程中选择诚信可靠和信息质量好的代理进行合作，从而使自己收益最大，系统收益最大。用程序模拟实验，结果表明了该方案的优越性。

关键词: 不确定性, 信任模型, CT信任模型, 传感器网络