公开(公告)号：US06975490B2

公开(公告)日：2005-12-13

申请号：US10429829

申请日：2003-05-06

Applicant: Byeong-Hoon Lee ,  Min-Ho So

Inventor： Byeong-Hoon Lee ,  Min-Ho So

IPC: G01R31/02 ,  F24F11/00 ,  F24F11/02 ,  G01R29/18 ,  H02H3/253 ,  H02H7/09 ,  H02H7/00

CPC classification number: H02H3/253 ,  F24F11/30 ,  H02H7/09

Abstract: In an apparatus and a method for detecting a phase state capable of improving reliability of an air conditioner by preventing an abnormal operation of the air conditioner by detecting a phase state (antiphase and open-phase) of three phase AC power supplied to the air conditioner and displaying the detected phase state, the apparatus includes a phase detector for detecting first, second and third phases of a three phase current; an interrupt detector for detecting a falling edge of a pulse signal corresponded to the third phase of the detected first, second and third phases, recognizing an interrupt occurrence by the third phase when the falling edge is detected and generating a counting signal; a counter for counting a pulse signal corresponded to the first and second phases on the basis of the interrupt occurred-third phase according to the counting signal; an antiphase/open-phase detector for detecting a state as a normal connection state, an antiphase state on the basis of a pulse signal corresponded to the first or second phase counted by the counter and detecting an open-phase state on the basis of the interrupt counting times; and a display unit for displaying a message indicating the antiphase state or the open-phase state or the normal connection state on a screen according to a control signal of the antiphase/open-phase detector.

Abstract translation: 在通过检测提供给空调器的三相AC电力的相位状态（反相和开相）来防止空调机的异常运行来检测能够提高空调的可靠性的相位状态的装置和方法中， 并显示所检测的相位状态，所述装置包括用于检测三相电流的第一，第二和第三相位的相位检测器; 用于检测对应于检测到的第一，第二和第三相位的第三相位的脉冲信号的下降沿的中断检测器，当检测到下降沿时识别出第三相位的中断发生并产生计数信号; 根据计数信号，根据中断发生的第三相位计数对应于第一和第二相的脉冲信号的计数器; 用于检测作为正常连接状态的状态的反相/开路相位检测器，基于对应于由计数器计数的第一或第二相位的脉冲信号的反相状态，并基于 中断计数次数; 以及显示单元，用于根据反相/开相检测器的控制信号在屏幕上显示指示反相状态或者开相状态或正常连接状态的信息。