Design And Implementation Of Impedance Analysis And Testing Device For Responder

The impedance characteristic of emission transducer is an important system parametersin the deep sea responder system. According to the prince of impedance measurement,Design a portable device to measure the impedance of transducer working in different depthunder water.There are two measurement modes, the first way is using direct digital frequencysynthesis to output pumping signal, then sampling voltage and current signal on thetransducer and storage the date in SD card, getting impedance characteristic curve afterMatlab treatment. The other way is using AD5933to measure the transducer’s impedancecharacteristic by I2C bus controlled.The hardware circuit includes DSP minimum system circuit, Serial communicationcircuit, DDS frequency scanning output circuit, Data acquisition and storage circuit, AD9953measurement circuit, simulation regulation circuit and the power supply circuit.Write thecontrol program in the CCS3.3by C language. The core of digital signal processing system isTMS320VC5509A. Data analysis and graphics rendering is finished in Matlab developmentenvironment.All circuit modulars are tested and meet the design requirements. At last, revise thesystem deviation via the tank experiment.