Unlock instant, AI-driven research and patent intelligence for your innovation.

Passive isolated direct current (DC) voltage detection device for urban railway vehicle

A DC voltage, urban rail technology, applied in the direction of voltage/current isolation, etc., to achieve the effect of improving anti-interference ability, improving safety performance, and good load matching performance

Active Publication Date: 2013-06-19
XIANGTAN ELECTRIC MFG CORP LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantage that the existing DC voltage detection device for urban rail vehicles must use an external power supply to work, the present invention provides a passive isolation type DC voltage detection device for urban rail vehicles

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Passive isolated direct current (DC) voltage detection device for urban railway vehicle
  • Passive isolated direct current (DC) voltage detection device for urban railway vehicle
  • Passive isolated direct current (DC) voltage detection device for urban railway vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0014] refer to figure 1 , the present invention consists of a sequentially connected voltage-dividing and current-limiting circuit for the DC high voltage of the power supply track, and a transformer feedback multivibrator circuit for converting the DC voltage signal after the voltage division and current-limiting into an AC voltage signal. The AC voltage signal output by the feedback multivibrator circuit is rectified, filtered, and load-matched by a rectification-filtering load-matching circuit and a voltage display device.

[0015] refer to figure 2 , the voltage-dividing and current-limiting circuit includes the measured DC input voltage terminal N1 and the voltage-dividing and current-limiting resistors R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 connected in series in sequence, and the voltage sampling resistor R11 It is connected in par...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a passive isolated DC voltage detection device for urban railway vehicle, comprising a voltage-division current-limit circuit performing voltage division and current limit for a DC high voltage of a power supply railway, a transformer feedback multiresonant oscillation circuit transforming the voltage divided and current limited DC voltage signal into an alternating current (AC) voltage signal, a rectifying filtering and load matching circuit performing rectification, filtering and load matching for the AC voltage signal outputted by the transformer feedback multiresonant oscillation circuit, and a piece of voltage display equipment, which are connected in turn. While detecting the DC voltage of the power supply railway, the device provided by the invention can realize passive work; and the device has good load matching performance and capacity of resisting disturbance.

Description

technical field [0001] The invention relates to a DC voltage detection device for rail vehicles, in particular to a passive isolation type DC voltage detection device for urban rail vehicles. Background technique [0002] At present, urban rail vehicles such as subways and light rail vehicles are all powered by DC voltage. When the vehicle is running, the DC voltage must be detected in real time for the operation control of the vehicle. Most of the DC voltage sensors used in urban rail vehicles are active, and need to rely on external power supply when working. Contents of the invention [0003] In order to overcome the shortcoming that the existing DC voltage detection device for urban rail vehicles must use an external power supply to work, the invention provides a passive isolation type DC voltage detection device for urban rail vehicles. [0004] The technical solution adopted by the present invention to solve the technical problem is: the voltage dividing and curren...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01R15/14
Inventor 冯大唯宋炎秋杨理智肖文平戴洁
Owner XIANGTAN ELECTRIC MFG CORP LTD