Title:
RAIL TRAIN FULL-REDUNDANCY SPEED MEASUREMENT METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/005765
Kind Code:
A1
Abstract:
A rail train full-redundancy speed measurement method, comprising: a multi-channel speed sensor (1) inputting a pulse signal and a phase difference into a main speed measurement system (2) and a standby speed measurement system (3) (S1); according to whether an inputted signal is normal, a speed sensor detection and switching device performing switching between different multi-channel speed sensors (1) and switching between different channel groups (S2); an accelerometer device determining, according to the phase difference, the forward direction of a train and, by means of the pulse signal, calculating an initial speed value and acceleration value of the train (S3); a speed measurement processing device processing a signal from the multi-channel speed sensor (1) and intelligentizing data to rule out the influence of other factors such as noise, and determining the rationality of the speed according to data of the accelerometer device (S4); a logic processing device performing logic processing determination on data outputted by the speed measurement processing device and performing consistency voting on the speed value outputted by the speed measurement processing device (S5), and, after voting is complete, outputting the forward direction and the speed value of the train to a train control system (S6).
Inventors:
LIANG XINGXING (CN)
QIN YEJUN (CN)
QIN YEJUN (CN)
Application Number:
PCT/CN2022/106807
Publication Date:
February 02, 2023
Filing Date:
July 20, 2022
Export Citation:
Assignee:
BYD CO LTD (CN)
International Classes:
B61L25/02
Domestic Patent References:
| WO2020078146A1 | 2020-04-23 |
Foreign References:
| CN112798012A | 2021-05-14 | |||
| CN112550376A | 2021-03-26 | |||
| CN111157766A | 2020-05-15 | |||
| JP2017003309A | 2017-01-05 |
Attorney, Agent or Firm:
BEYOND TALENT PATENT AGENT FIRM (CN)
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