Edge Electric Field Moisture Content Electric Capacity Sensor Research And Analysis

Along with saves society'spolicy unceasing implementation, agricultural water used water resources economy more and more enhances with the full use to the people produces, the life program comes up. This article proposed one kind is called the test soil moisture theedge electric capacity moisture content sensor. Using this kind of product, may test the soil the moisture content, whether suits to crops' growth. Greatly reduced the irrigation which is not suitable, thus also has avoided the agricultural water used waste, reasonable carries on saves water the irrigation..The edge electric field moisture content sensor, through was measured the physical quantity the change causes in the capacitor any one kind of parameter to have the corresponding change to cause the electric capacity change. Again passes through the certain measuring circuit to transform this change for the useful electrical signal outputs. Then acts according to this kind of output signal size to determine was measured the physical quantity the size, this is the electric capacity type sensor basic principle of work. One kind of plane electric capacity sensor develops which using this kind of technology may use in to examine the arbitrary shape the matter water content, moreover also may through the design, the survey different depth material water content.This article through the massive tentative data and the circuit analysis, proved it has the structure simply, resolution high, theantijamming ability strong, the dynamic response is quick, can work under the bad operating mode condition, and can realize character risticand so on non- contact type survey.