Design of a CDMA-based wireless data transmitter for embedded sensing

Machine health monitoring is of critical importance to its safe and reliable operation. The emergence of wireless data transmission techniques has extended the scope of health monitoring to machine components and systems that are difficult to access or not suited for wired sensor data acquisition. This paper presents the design and prototype realization of a digital wireless data transmitter based on the code division multiple access technique. The design provides a generic solution for various applications in electronic instrumentation, measurement, and embedded sensing for machine condition monitoring and health diagnosis.