公开(公告)号：US20110050299A1

公开(公告)日：2011-03-03

申请号：US12861883

申请日：2010-08-24

Applicant: Wei Dong ,  Wu Chen ,  Huanrong Song ,  Chuanyang Lu

Inventor： Wei Dong ,  Wu Chen ,  Huanrong Song ,  Chuanyang Lu

IPC: H03L7/00

CPC classification number: H02H11/00

Abstract: A protection circuit suitable for electrical instruments includes a software detecting circuit, a logic AND circuit, a driver and control circuit for engine operating power components, and a hardware detecting circuit connected with the logic AND circuit. Both the software detecting circuit and the hardware detecting circuit monitor the state of an operating switch and provide signals to the logic AND circuit. Only when the state of the switch changes from opened to closed and both detecting circuits determine that this state is correct will the driver and control circuit signal the engine to operate. Furthermore, by connecting two or more power components in serial at the same time, the engine will not work by accident and the machine will not be out of control when any one of the power components is damaged. A circuit using capacitors of suitable specification can also be provided to isolate the controlling pin of a power component in the form of an SCR to thereby avoid failure and damage of the entire system.

Abstract translation: 适用于电气仪器的保护电路包括软件检测电路，逻辑与电路，用于发动机工作功率部件的驱动器和控制电路以及与逻辑与电路连接的硬件检测电路。 软件检测电路和硬件检测电路都监视操作开关的状态，并向逻辑与电路提供信号。 只有当开关状态从开启状态切换到闭合状态并且两个检测电路确定该状态是正确的时候，驱动器和控制电路将信号发动机运行。 此外，通过同时连接两个以上的电力部件，发动机不能意外工作，并且当任何一个功率部件损坏时，机器不会失控。 也可以提供使用适合规格的电容器的电路，以隔离SCR的形式的功率部件的控制引脚，从而避免整个系统的故障和损坏。

公开(公告)号：US08370666B2

公开(公告)日：2013-02-05

申请号：US12861883

申请日：2010-08-24

Applicant: Wei Dong ,  Wu Chen ,  Huanrong Song ,  Chuanyang Lu

Inventor： Wei Dong ,  Wu Chen ,  Huanrong Song ,  Chuanyang Lu

IPC: G06F1/32

CPC classification number: H02H11/00

Abstract: A protection circuit suitable for electrical instruments includes a software detecting circuit, a logic AND circuit, a driver and control circuit for engine operating power components, and a hardware detecting circuit connected with the logic AND circuit. Both the software detecting circuit and the hardware detecting circuit monitor the state of an operating switch and provide signals to the logic AND circuit. Only when the state of the switch changes from opened to closed and both detecting circuits determine that this state is correct will the driver and control circuit signal the engine to operate. Furthermore, by connecting two or more power components in serial at the same time, the engine will not work by accident and the machine will not be out of control when any one of the power components is damaged. A circuit using capacitors of suitable specification can also be provided to isolate the controlling pin of a power component in the form of an SCR to thereby avoid failure and damage of the entire system.

Abstract translation: 适用于电气仪器的保护电路包括软件检测电路，逻辑与电路，用于发动机工作功率部件的驱动器和控制电路以及与逻辑与电路连接的硬件检测电路。 软件检测电路和硬件检测电路都监视操作开关的状态，并向逻辑与电路提供信号。 只有当开关状态从开启状态切换到闭合状态并且两个检测电路确定该状态是正确的时候，驱动器和控制电路将信号发动机运行。 此外，通过同时连接两个以上的电力部件，发动机不能意外工作，并且当任何一个功率部件损坏时，机器不会失控。 也可以提供使用适合规格的电容器的电路，以隔离SCR的形式的功率部件的控制引脚，从而避免整个系统的故障和损坏。