家用多功能用電保護器的設計

1、 濱州學院本科畢業(yè)設計（論文）IIAbstractAlong with the rapid development of the economy and the expansion of the construction size of the country, the power consumption is increasing in society. Moreover, the rapid development of elec

2、tric power industry makes the subject of safety electricity very important. Low voltage power grid of electric shock and leakage protection in China have caused of the attention of the power of the electricity and labor

3、protection part, therefore, safety consciousness in people's hearts is more and more important. As people become more conscious to use more powerful protection device of power for applying the electricity to the use

4、of real-time monitoring and effectively limit. This paper introduces a kind of the intelligent home multi-function electric protection device that can make the circuit of passing electricity flow and power protected and

5、realized the automatic electricity protective under the condition of a short circuit and the load in the family circuit. This equipment design is based on the integrated circuit AT89S52 control systems, including sensor

6、module, amplifier module, peak detection module, AD conversion module. The large current through the current transformer STC211FK can convert into small current output, precision op-amp OP07 convert into voltage signal,

7、and then through the detection circuit detect the peak , again by AD0809 sampling output the stable value, through calculation software can be accurately current, power, so as to realize the overload, short circuit, touc

8、hing, leakage protection. This design has added the combustible gas sensitive components MQ-2, used for induction combustible gas directly to SCM signals, and finally controlled relay by single-chip microcomputer to cont