Title:
車輪径特定装置
Document Type and Number:
Japanese Patent JP7045791
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance an accuracy of the wheel diameter specified based on the number of revolutions of the wheels of the train.SOLUTION: A speed electrical generator 13 outputs the P number of pulse signals during one rotation of a wheel 51. An information processing unit 11 counts the number of pulse signals outputted by the speed electrical generator 13. When a measured value of the pulse signal reaches (P×N), the wheel 51 determines that the wheel rotates the N number of rotations. A speed meter 12 measures a traveling speed of the train 5 at a predetermined time T. The information processing unit 11 accumulates a value multiplied by the predetermined time T for each of the traveling speed measured by the speed meter 12 during the N number of rotations of the wheel 51 and specifies a traveling speed L of the train 5. The information processing unit 11 calculates a wheel diameter D of the wheel 51 by dividing the traveling distance L of the train 5 by the N number of rotations and a circle ratio π of the wheel 51.SELECTED DRAWING: Figure 1
Inventors:
Takeo Ikeda
Application Number:
JP2016234130A
Publication Date:
April 01, 2022
Filing Date:
December 01, 2016
Export Citation:
Assignee:
Nippon Signal Co., Ltd.
International Classes:
B60L3/00; G01C22/00; B61K9/12; G01B21/12
Domestic Patent References:
| JP2012042271A | ||||
| JP5249127A |
Foreign References:
| US5467654 | ||||
| CN105091909A | ||||
| US20150134155 |
Attorney, Agent or Firm:
Asahi Patent Office
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