Wireless Synchronous Triggering Technology Special for Wireless Sensor Networks

Cooperative technology applied in testing and measurement field was presented in this paper. In order to test and measure the field signal, the nodes of wireless sensor networks are necessarily deployed in the testing area of the signal source. The nodes must cooperate with other nodes to complete the field measuring task. A special approach based on wireless mode is proposed in this paper. This approach is a new cooperative wireless triggering-mechanism based on "waiting-action" sequence wireless broadcast strategy. The advantage of this approach is no any special triggering wires and all the nodes can be freely deployed anywhere in the signal field compared with wire triggering approach. No any special time stamp is needed in our system. The performances of wireless cooperative triggering-mechanism for coordinating all the measuring nodes based on our hardware and software embedded platform were experienced and analyzed. The experiments indicate that the approach can achieve us on coordinative precision. The synchronous triggering technologies proposed by ourselves can be applied to various field measuring scenarios.