Recently, there are more touch panels that have been extensively used throughout the world. Due to customer input regarding improvements, we have examined the use of technology of touch products. In the market, most of touch monitors used by finger or touch pen get the electricity, capacity effect, or stop sensor signal. From the signal orientates the controller, lots of products were used by ATM machine, counter, automatic monitor, and 3C roducts, to communicate between human people and computer equipment. On the other hand, they also belong to interactive game platform of imitating sport. For example, those places of striking imitation, pitching, golfing, interactive movie, playing piano, percussion imitation. They all have this kind of striking action, distinguish from signal. It's very important to do research of building up a sensor and deal with signal of both software and hardware platforms. The paper discusses about making a vibration sensor from the PVDF piezoelectricity film. To stick the vibration sensor on the four corners of glass board in long 50 cm, wide 50 cm and think 0.5 cm sudoku. During the board striking get the signal, link with oscilloscope and computer. By operating the computer, save the information in computer when the oscilloscope got the data. Finally, using the software of visual C++ to calculate and analysis, and from the tree structural algorithm method to speed up and improve the accuracy. These conclusions can improve that the ninety six percent of the accuracy can occur when the sensor is in the best condition.