基于霍尔传感器的电流测试设计—课程设计.docVIP

摘 要 电流检测有多种方法, 最通用的方法是采用阻性分流器、互感器或霍尔传感器。阻性分流器工作时与负载串联, 无法进行隔离测量; 互感器只适用于50 Hz 工频交流的测量; 霍尔检测技术综合了互感器和分流器技术的所有优点, 同时又克服了互感器和分流器的不足, 采用一只霍尔电流电压传感器/ 变送器模块检测元件, 既可以检测交流, 也可以检测直流,甚至可以检测瞬态峰值, 同时又能实现主电路回路和电子控制电路的隔离, 因而是替代互感器和分流器的新一代产品。 电源作为电气、电子设备必不可少的能源供应部件，需求日益增加，而且对功能、稳定性等各项指标也提出了更高的要求。直流稳压电源一般由电源变压器、整流滤波电路及稳压电路所组成。变压器把交流电压变为所需要的低压电交流电。整流器把交流电变为直流电。经过滤波后，稳压器再把不稳定的直流电压变为稳定的直流电压输出。本设计主要采用直流稳压构成集成稳压电路，经过、变压、整流、滤波，稳压过程将220V交流电，变为稳定的直流电。 本次试验通过对直流可调电流源的设计实训，能够熟练应用分立元件完成小功率直流稳压电源的电路设计、参数运算和器件选择，使其满足试验所需要求。同时正确掌握直流稳压电源的制作与测试方法，为今后的实际工作打下良好的基础。 【关键字】 霍尔传感器 稳压器 直流稳压电源 Abstract Current detection have many kinds of methods, the most common method is to use impedance shunt, transformer or hall sensor. Impedance shunt work with load series, unable to isolation measurement; Transformer is only in the Hz power frequency ac measurement; Hall detection technology integrated the transformer and shunt technology all advantages, at the same time, and overcome the transformer and the shortage of the shunt, using a hall current voltage sensor/transmitter module detecting element, which can detect communication, also can detect dc, even can detect transient peak, and at the same time can realize main circuit loop and electronic control circuit of isolation, it is alternative transformer and shunt of a new generation of products. Power supply for electrical and electronic equipment indispensable energy supply parts, growing demand, but also to function, the stability of the indicators also put forward higher request. Dc regulated power supply is composed of power transformer, rectifier filter circuit and voltage regulator circuit composed. The ac voltage transformer to need low voltage electric alternating current (ac). Rectifier the alternating current (ac) into direct current. After filtering, voltage regulator and unstable dc voltage into a stable dc voltage output. This design mainly adopts dc voltage constitute integrated voltage regulator circuit, after, transformer, re