Research on Fault Diagnosis System of Touch Screen Based on Pressure Sensor

With the rapid development of industry, the newly added equipment is also evolving towards being large, complex, precise, high-speed, and capable of continuous operation. Real-time monitoring of the operational status of touch screen devices, timely detection of early faults, identification of fault sources, and elimination of faults can provide crucial guarantees for the safety of enterprise equipment or personnel. Since the vibration signal varies with the state of the touchscreen component, it can reflect the mechanical operation status. Therefore, through the analysis and processing of vibration signals, the nature and severity of the problem can be determined, thereby analyzing and monitoring the real-time operating status of the touch screen. To achieve real-time monitoring of the touchscreen status, the vibration signal acquisition, signal processing and signal analysis adopted should have the characteristics of high real-time performance, good portability, strong anti-interference ability and adaptability to various environments. The piezoelectric sensor with small size, fast response and wide adaptability is used to collect the signal of the touch screen status. High-speed acquisition of vibration signals and high-speed data communication are carried out using FPGA chips. The signal processing function of LABVIEW is used to process the vibration signal in real time. Real-time analysis enables the monitoring and fault detection of different touch screens in different environments at a relatively low cost, or it is used to assist in fault detection and fault data recording.