Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
TRACK CIRCUIT TRANSMITTER, AND METHOD OF REALIZING FAIL-SAFE CAPABILITY
Document Type and Number:
WIPO Patent Application WO/2017/198139
Kind Code:
A1
Abstract:
A track circuit transmitter, and method of realizing fail-safe capability. The track circuit transmitter comprises: a controller (11) having a first output end connected to a control input end of a waveform generator (13), a second output end connected to a first input end of a safe AND gate circuit (12), and a third output end connected to a second input end of the safe AND gate circuit (12); the safe AND gate circuit (12) having an output end connected to a first power input end of the waveform generator (13) and to a control end of a controlled switch (16); the waveform generator (13) having an output end connected to an input end of a power amplifier (14); the power amplifier (14) having an output end connected to a first switch contact (1) of the controlled switch (16) and to an input end of a check-back circuit (15); the check-back circuit (15) having an output end connected to an input end of the controller (11); and the controlled switch (16) having a second switch contact (2) connected to a transmission system including the track circuit transmitter. In this way, the present invention eliminates restrictions of a controlled switch (16) of a track circuit transmitter to controlled switches (16) of a safe type.

Inventors:
REN, Guoqiao (Block 1, Qichebowuguan Nanlu Advanced Business Park, Fengtai District, Beijing 0, 100070, CN)
SUN, Guoying (Block 1, Qichebowuguan Nanlu Advanced Business Park, Fengtai District, Beijing 0, 100070, CN)
XU, Zongqi (Block 1, Qichebowuguan Nanlu Advanced Business Park, Fengtai District, Beijing 0, 100070, CN)
WANG, Rui (Block 1, Qichebowuguan Nanlu Advanced Business Park, Fengtai District, Beijing 0, 100070, CN)
Application Number:
CN2017/084495
Publication Date:
November 23, 2017
Filing Date:
May 16, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
BEIJING NATIONAL RAILWAY RESEARCH & DESIGN INSTITUTE OF SIGNAL & COMMUNICATION GROUP CO., LTD. (Block 1, Qichebowuguan Nanlu Advanced Business Park, Fengtai District, Beijing 0, 100070, CN)
International Classes:
B61L1/18
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (7th Floor, Scitech PlaceNo. 22, Jian Guo Men Wai Ave. Chao Yang District, Beijing 4, 100004, CN)
Download PDF: