畢業(yè)設計---基于stm32簡易自動電阻測試儀的硬件設計

1、畢業(yè)設計簡易自動電阻測試儀的硬件設計 簡易自動電阻測試儀的硬件設計系 部 電 子 信 息 工 程 系 專 業(yè) 名 稱 電子信息工程技術 電子信息工程技術 班 級 電 子 1 0 9 1 班 2012 2012 年 02 02 月 10 10 日簡易自動電阻測試儀的硬件設計IIEasy Auto resistance tester hardware designAbstr

2、actThe design of the power supply module, STM32F103ZET6 small single-chip system module, OPA548 constitute 5v constant pressure module, relay module consisting of the shift resistor, stepper motor module, 3.2-inch TFT (T

3、hin Film Transistor film field-effect transistor) color touch screen display module. The design is controlled by an internal integrated single-chip 12-bit DA chip to OPA548 op-amp input voltage, thereby controlling the o

4、utput voltage op-amp chip, and then sent to the relay module consisting of the shift resistor, and finally by testing the voltage on the resistor to determine the measured resistance value. STM32 microcontroller which co

5、ntrols a small system also integrates the two 12-bit AD, a collection when the OPA548 output value to form a closed loop system so that OPA548 output constant 5v, a collection test resistance value, thereby controlling t