Study On Charge Character Measuring And Detection System Of Insect

It is important for insect physiology'study,insects detection and Plant protection to Study Insects charged characteristics.But It doesn't have effective means to measure insects charged characteristics contactless.It also dosen't have effective means to measure pests of Drill decayed class. According to the situation, this paper established the insects charge measurement model and insect's point insect model.We design the inductive charge sensor.We also design high sensitive and anti-interference signal regulate circuit and we analysis the signal and noise;We build measuring system of insects charge characteristics based on NI LabVIEW SignalExpres and Tektronix oscilloscope.meanwhile we build the corresponding calibration system.We do experiment of Calibrating test and measurement of insects charge characteristics.We put forward methods of Insects detection base on Charge characteristics firstly.We do exploration and experiment preliminary.We also do some simulation and calculation preliminary.Experiment result shows that measurement of Insects charge contactless is right and Measuring system fit the design index. The method of insects detection based on Charge characteristics is feasible.We found curve of sensor measure and electric field simulation and Electric apparatus of KDY-V is consistent from Calibration curve from the large signal through measuring system calibration experiment.It state that linearity and accuracy of sensor is good. We can see from Small signal calibration curve that Calibration curve is line cros origin in the area of KDY - V electric apparatus can't cover .It state that Sensitivity and linearity of sensor to small signal is high.It is better than KDY - V electric apparatus. Sensitivity of this sensor of insects charge characteristics is 0.05V/m.It convert to Sensitivity of Charge quantity is 0.03pC .The linearity is better than 2%.Through preliminary exploration and experiment of insects detection principle based on Charge model,We get the electric field distribution and charge source location information .It prove that this method is feasible.Research direction of next step is to improve prototype to improve measuring sensitivity furthermore, reduce measurement noise.The study of Charge characteristics of a typical Drill decayed pests and to build the model of charge characteristics and the signals low-frequency electromagnetic radiation is also the research direction of next step.