Mettler-toledo Instruments (shanghai) Co. Ltd

Sap Se

Xiaoling Zhou

Changlin Wang

Zhenhua Lin

Yingzhen Tong

Jie He

Lin Cai

Xuemin Wang

Bo Zhou

Bo Zhao

ShuYi Xu

Jianwei Chen

Fanfeng Zu

Jin Tang

Chengyang Ye

Jianjun Han

A power on/off control circuit and an electronic device is provided, the circuit including: a switching element, a first semiconductor switching circuit including a first semiconductor switching element, a second semiconductor switching circuit including a second semiconductor switching element, and a holding circuit connected between a first terminal of the first semiconductor switching element and a second terminal of the second semiconductor switching element. When the switching element is closed, the first semiconductor switching element is turned on. When the first semiconductor switching element is turned on, the second semiconductor switching element is turned on, and a power on signal is output via the second terminal of the second semiconductor switching element. When the second semiconductor switching element is turned on, the holding circuit is operable to maintain the on state of the first semiconductor switching element. The control circuit can stably lock a started state.

Power on/off control circuit and electronic device

A low-power electronic pipette has a charging management module (), a control module (), a motor driving module (), a display module (), a communication module (), a sensing module (), and a battery module (). The charging management module, the communication module, and the sensing module are each in two-way communication with the control module. The display module and the motor driving module are each in one-way communication with the control module. The battery module supplies energy to the low-power electronic pipette. When the sensing module acquires a signal and determines that the low-power electronic pipette has not been operated for a predetermined period and is not in a charging state, the low-power electronic pipette enters a low-power mode, in which the control module turns off the charging management module, the motor driving module, the display module, and the communication module, and the control module enters a sleep state.

Low-power electronic pipette

A computer-implemented method for failure diagnosis using fault tree can include: receiving a fault tree comprising a node representing a top event, a plurality of nodes representing respective basic events, and one or more logic gates connecting the plurality of nodes representing the respective basic events to the node representing the top event; obtaining reliability parameters corresponding to the basic events; calculating fault tree importance measures corresponding to the basic events; calculating failure impact factors of the top event corresponding to the basic events, wherein the failure impact factors of the top event are products of the corresponding reliability parameters and the corresponding fault tree importance measures; ranking the basic events based on the failure impact factors of the top event; and identifying a most significant contributor to the top event, wherein the most significant contributor is a basic event having the highest failure cause probability of the top event.

Systems and methods for failure diagnosis using fault tree

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Shanghai, China

Xiaoling Zhou