Elevator overspeed detection protection system

• Main Authors: JIANG DUO, JIN QIU, LUAN PENGLONG, LI HAN, PAN ZONGREN
• Format: Patent
• Language: Chinese; English
• Published: 09.11.2021
• Subjects: ELEVATORS; ESCALATORS OR MOVING WALKWAYS; HAULING; HOISTING; LIFTING; PERFORMING OPERATIONS; TRANSPORTING

The utility model discloses an elevator overspeed detection protection system and relates to the field of elevator safety control. The protection system is additionally provided with a speed detection protection circuit board consisting of an encoder pulse signal acquisition circuit, an encoder pulse signal calculation circuit and an elevator overspeed protection circuit which are sequentially connected in series, and the circuit board is used for acquiring pulse signals of an incremental encoder; the speed of the elevator is calculated after the signal is converted into a square signal, the band-type brake loop is controlled, the band-type brake loop can be rapidly cut off under the condition that the elevator is overspeed, then the elevator is forbidden from running, and the safety of the elevator in the running process is improved. 一种电梯超速检测保护系统，涉及电梯安全控制领域。该保护系统增加了由依次串联连接的编码器脉冲信号采集电路、编码器脉冲信号计算电路及电梯超速保护电路构成的速度检测保护电路板，该电路板用于采集增量式编码器的脉冲信号,转换为方波信号后计算出电梯速度并对抱闸回路加以控制,在电梯发生超速的情况下，能够快速切断抱闸回路，进而禁止电梯运行，提高了电梯运行过程中的安全性