Advances in Optimal Sensor Placement for Structural Health Monitoring

In recent years, with the in-depth research on the structural health monitoring systems, how to arrange the limited sensors in the reasonable position of the structure to better obtain the dynamic response information of the structure has become the hot research topics, especially in the specific case [1]. According to a large number of researches, the accuracy of information collection and the credibility of damage identification are greatly affected by different layout methods of sensors. Therefore, arranging sensors feasibly to obtain sufficient information of structure is essential. Therefore, this study summarizes the calculation method of optimal sensor placement in structural health monitoring. Firstly, the existing optimization methods and common evaluation criteria of sensor layout are summarized and introduced in detail. Secondly, summarize the shortcomings of existing methods. Finally, the insufficient research and unsolved problems are concluded. Based on the above three analysis steps, it is concluded that in a specific structure, the evaluation criteria of various methods have different focuses, and it is difficult to find the optimal scheme. A good sensor placement method and the combination of positions determined may not be suitable for another structure. The specific method to be applied depends on the purpose of structural test analysis. In practice, a variety of methods can be used to preliminarily determine the sensor position combination, and then make a choice according to the test purpose and requirements.