摘要
介绍了ＸＪＰ－０２Ｂ数字转速显示仪所采用的新式看门狗电路，分析了常用的看门狗电路和新的看门狗电路在抗干扰方面的优缺点．应用表明，新的看门狗电路具有很强的抗干扰能力．
A new model watch dog is introduced as a new measure for anti-niterference in XJP-02B Digital Revolution indicator. This paper compares the difference between former and present model watch dogs. Application results show that the new model watch dog has a higher property of anti-interference.
关键词
抗干扰
看门狗电路
智能化仪表
anti-niterference, watch dog, fluctuation, machine cycle
