Southwest Jiaotong University

Chengdu Futong Optical Communication Technologies Co., Ltd

Hc Bio-Engineering (Chengdu) Co., Ltd.

Jian Chen

Jie Li

Qiang Chen

Wensheng Song

Tao Tang

Kexin Yang

Xiaosong Jian

Pengcheng Xu

Xinglai Ge

Haoyang Tan

Chenwei Ma

Haibin Chen

Qingguo Li

Dejiang Zhou

The present invention discloses a resistor voltage-bearing type on-state voltage drop measurement circuit for junction temperature monitoring and a monitoring method. The measurement circuit includes a high-resistance series high-voltage resistor R, switching diodes Dand D, a low-voltage MOSFET M, an inverter U, a three-state gate U, an RC delay circuit consisting of a resistor Rand a capacitor C, current-limiting resistors Rand R, auxiliary voltage sources VDD and VCC, an operational amplifier U, and an isolation operational amplifier U. and the monitoring method includes: designing an on-state voltage drop sampling circuit based on the high-resistance resistor and selecting parameters according to an actual application scenario; measuring a collector current and an on-state voltage drop model at different junction temperatures under an offline condition, and providing a calculation model for online monitoring; and performing online monitoring on the junction temperature.

Resistor voltage-bearing type on-state voltage drop measurement circuit for junction temperature monitoring and monitoring method

A genetic testing device includes a safety cabinet, a gas flow control system, a first treatment module configured to treat an amplification reagent and a polymerase chain reaction (PCR) plate, a second treatment module configured to treat a reagent, a tip, and a gene sample, a sample injection module configured to inject an amplification reagent into a microwell of a PCR plate, a purification treatment module configured to treat a gene sample, an amplification detection module for gene amplification and detection, a heat sealer configured to seal a PCR plate, a material delivery module A, a material delivery module B, and a material delivery module C.

Genetic testing device

This invention provides a manufacturing method for an optical fiber. In this invention, when the core layer loose body and the cladding layer loose body are deposited, the oxyhydrogen flame is used make a temperature of an interface between the core layer and the cladding layer rise, such that silicon dioxide at the interface appropriately contracts to form an isolation layer with a relatively high density. In addition, in this invention, a hollow glass tube is used as a target rod, and the hollow glass tube which is the target rod is directly connected with the core layer loose body. During the subsequent dehydration, not only a dehydration atmosphere penetrates from the outside to the inside of the cladding layer loose body, but also the dehydration atmosphere directly enters the core layer through the hollow glass tube.

Optical fiber and manufacturing method thereof

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Chengdu, China

Jian Chen