Active Electric Field Sensor Positioning Characteristics Of Simulation And Experimental Design

Biomimetic sensor is one of the most important directions of modern sensor study. Weakly electric fish hunt and navigate without visual cues by sensing perturbations of a self-generated electric field. The ability to detect, characterize and locate objects using self-generated electric fields is called Active Electrolocation. This capability could be beneficial for underwater robots sent to explore dark aquatic environments. This work offers an alternative method for underwater location in dark aquatic environments, a new type artificial underwater location System, Active Electrolocation system, which based on a biological inspiration. This dissertation does some preliminary study for the Active Electrolocation system, which include numerical simulations and experiment.In the numerical simulation, FEM—finite element method—analysis software ANSYS was applied to analyze the electric field distribution phenomenon of the biomimetic underwater location System. First, the model of Active Electrolocation system was built in two dimensions. The positions of the electroreceptors in the system will be discussed in different three areas—right side, inside and left side of two emission electrodes. And then, we analyze the electric field distribution of difference with the position of the center of the object as it moves along on the line y=2cm in the three areas. The results are valuable in the underwater location System and the instrument design in Active Electrolocation system.After the simulation, I design the hardware circuit of the simulation model for experiment. The hardware circuit design is only to design a hardware circuit which match with the model of the simulation, which deal with the signal of the power receiver directly.The signal received by the power receivers was put out by the hardware circuit, which was sampled by MP4210 multi-function data acquisition card. The sampled digital signal will be processed by person computer which has a strong data processing capability. During this process, a multi-channel data acquisition GUI (Graphical User Interface) was developed with the LabVIEW platform for MP4210, which was used for controlling MP4210 and processing the sampled datas.With the development of hardware and software for the experiment, an active electrolocation system experiment platform was completed which was successfully tested by the standard signal.Based on the experiment platform, I have done some preliminary experiments which provide the experiment basis for the fllow-up experiment.