Title:
車両速度算出装置及び車両速度算出方法
Document Type and Number:
Japanese Patent JP7383173
Kind Code:
B2
Abstract:
In order to achieve improvement in reliability of a speed calculation device included in a railway vehicle while reducing cost increase due to redundancy of a device, a vehicle speed calculation device includes at least two shaft speed sensors, a non-contact speed sensor, a sensor receiving unit that receives at least two first detection values detected by the shaft speed sensor and a second detection value detected by the non-contact speed sensor, an estimated speed calculation unit that calculates an estimated speed at present time of the railway vehicle from a latest vehicle speed and acceleration of the railway vehicle, and a speed determination unit that determines a vehicle speed based on at least two of the first detection values, the second detection value, and the estimated speed. The speed determination unit determines the vehicle speed by selecting a required speed from at least two first speeds calculated from at least two of the first detection values, a second speed calculated from the second detection value, and the estimated speed based on an adhesive or non-adhesive state of a wheel including the shaft speed sensor.
Inventors:
Kazuki Morita
Application Number:
JP2022560732A
Publication Date:
November 17, 2023
Filing Date:
October 26, 2021
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B60L3/08; G01P3/56; G01P21/02
Domestic Patent References:
| JP5249127A | ||||
| JP2016125856A | ||||
| JP6030509A | ||||
| JP2016137731A |
Foreign References:
| CN211809637U |
Attorney, Agent or Firm:
Patent Attorney Corporation Daiichi International Patent Office