Title:
軌道回路用送信器
Document Type and Number:
Japanese Patent JP7349374
Kind Code:
B2
Abstract:
To provide a transmitter for a track circuit having more favorable train detection performance in that the power applied to a ground device and a cable included in the track circuit is suppressed to miniaturize the ground device and the cable.SOLUTION: A transmitter 1 for a track circuit for transmitting a signal to the track circuit, includes an arithmetic processing unit for controlling a transmission level of a signal and performing transmission processing, an amplifier unit for amplifying the signal output from the arithmetic processing unit, a detection unit for detecting an output voltage and an output current of the signal amplified by the amplifier unit, and a calculation unit for calculating load impedance of the track circuit according to the output voltage and the output current detected by the detection unit. The arithmetic processing unit switches a control method of the transmission level based on a result obtained by comparing the load impedance with a threshold.SELECTED DRAWING: Figure 1
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Inventors:
Naohiro Ikeda
Application Number:
JP2020007590A
Publication Date:
September 22, 2023
Filing Date:
January 21, 2020
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B61L1/18
Domestic Patent References:
| JP2010155589A | ||||
| JP2016124380A | ||||
| JP2003011816A | ||||
| JP3025071A | ||||
| JP2019038382A | ||||
| JP2120172A | ||||
| JP2011207449A |
Attorney, Agent or Firm:
Patent Attorney Corporation Sunnext International Patent Office