The Design Of Synchronized Electric Measurement System In Wide Dynamic Range

The electrical exploration with electrical potential measurement such as charged electrical method needs high voltage scope. On the condition of the non-placidity and random interference the test date at different point need to be compared. This contrast on the same background can help to identify the real abnormity. The paper takes the widen dynamic and synchronization sampling as the researching object. The transmitter electric circuit and the sampling circuit are major studying of this paper.The system adopts the patent of micro controller essence CIP-51 and CPLD to replace the massive periphery component. The schematic diagram and the hardware description language are both applied to design A/D synchronization gathering succession and A/D data storage electric circuit. Selects 24 bits A/D to enhance the analog input scope, and design the circuits of voltage attenuation; In order to improve the ability of anti-interference, carries on the synchronized sampling with two voltage sampling channel; In allusion to the characteristic of electrical exploration, designed the analog hardware circuit of filter and amplifier, aslo provided the detailed computational method of parameter.The widen dynamic and synchronous sample system based on the C8051F020 MCU consists of high voltage transmitter and the data acquisition. This system can be used in specific environment. Enhanced dynamic scope especially the measurement and the bi-channel synchronous sample system bring the survey under the condition of voltage value test and striving interference into realization.