In this paper, we propose the design of the wire harness testing system of Fujian Creation Electronics Co., Ltd. (FCE). To reduce the installation cost, wireless sensor network technology was introduced to eliminate the wiring task. The wireless sensor network contains numerous sensors and each of them uploads a large amount of detection results to the server. This lengthens the collection time of detection results and customers cannot accept the long system refresh time. A method of addressing the time constraint is required. In this study, we propose a wireless sensor network system that addresses the time constraint. The proposed system distributes the computing tasks from the server to the sensors to reduce the amount of uploaded data. By this method, we then propose novel network protocols for the proposed system and formally present them in this paper. The performance estimation showed that the proposed system addresses the time constraint while it reduces the labor cost and improves the operation efficiency.