The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 2021
Filed:
Sep. 27, 2018
Crrc Nanjing Puzhen Co., Ltd., Nanjing, CN;
Qiaofeng Jiang, Nanjing, CN;
Xiaofang Shi, Nanjing, CN;
Xianing Pan, Nanjing, CN;
Li Yang, Nanjing, CN;
Lian Ge, Nanjing, CN;
Aiping Zhang, Nanjing, CN;
Jianglong Chang, Nanjing, CN;
CRRC Nanjing Puzhen Co., Ltd., Nanjing, CN;
Abstract
A pantograph remote control circuit for an unmanned metro train includes a startup circuit of an auxiliary inverter emergency start relay, a control circuit of an auxiliary inverter energized relay, and a startup circuit of a pantograph raising relay. A first normally-open contact pair of the pantograph raising relay is serially connected to a pantograph raising electromagnetic valve and then connected to an output terminal of a battery. At the meantime, the bootstrap is remotely controlled by the internal ATC wake-up module when the power supply is fed by the battery, and there is no need for the driver to operate on the spot, thereby saving time for the driver from operations and reducing the potential misoperation of the driver.