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Method for collecting and transferring current and voltage quantities of feed line of power supply of city railway

A technology of feeder current and transmission method, which is applied in the direction of electrical signal transmission system, non-electrical signal transmission system, signal transmission system, etc., can solve the problem of monopoly of optical fiber data acquisition and transmission devices, and achieve fast calculation speed, high smoothness, and improved The effect of measurement accuracy

Inactive Publication Date: 2008-12-03
DONGFANG ELECTRONICS +1
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Problems solved by technology

However, so far the protection and control systems of the DC system of my country's urban rail transit still use imported equipment, and domestic related industries are still blank in this field. The main reason is that the "DC feeder protection" The key equipment "optical fiber data acquisition and transmission device" is monopolized by foreign countries

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  • Method for collecting and transferring current and voltage quantities of feed line of power supply of city railway
  • Method for collecting and transferring current and voltage quantities of feed line of power supply of city railway
  • Method for collecting and transferring current and voltage quantities of feed line of power supply of city railway

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] As shown in Figure 1, the ADSAMPLE program block diagram realizes the control input multiplexer and analog A / D converter.

[0029] / RST is the input reset signal, CLK is the input clock signal, DIN is the A / D value serial output signal, SEL1I, SEL2I are the multi-channel selection switch control signals, / CS is the start serial A / D conversion signal EOC is the serial A / D conversion end signal, DOUTZER[15..0] is the 16-bit zero error value that is N 0 , DOUTREF[15..0] is the 16-bit gain error value that is N R , DOUTVAL[15..0] is a 16-bit analog input value that is N X .

[0030] When SEL1I=0 SEL2I=0, select input zero error value N 0 ; Select input gain error value N when SEL1I=1 SEL2I=0 R ;SEL1I=0 SEL2I=1 select analog input value N X . Fig. 2 is the simulation waveform diagram of the function realized by the ADSAMPLE program mod...

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Abstract

A method for collecting and transmitting current-voltage value of feed line on city rail traffic utilizes VHDL language to realize control and zero error as well as gain pretreatment of data collection, recursion average value filtering of anti-interference and control of optical fiber communication in one FPGA chip.

Description

technical field [0001] The invention relates to a method for collecting and transmitting the current and voltage of a power supply feeder in an urban rail transit application, specifically, an optical fiber communication controller designed with FPGA to control data acquisition and transmission through optical fiber communication, and use FPGA to process the sampling data method. Background technique [0002] According to the planning information provided by the State Planning Commission and the Light Rail Research Center, during the "Eleventh Five-Year Plan" period, China's subway construction investment will reach 200 billion yuan, and an urban rail transit line with a total length of about 450 kilometers will be built. In 2020, China will have more than 550 kilometers of subway lines, and in 2050, including light rail and subway lines, it will reach 2,000 kilometers. However, so far the protection and control systems of the DC system of my country's urban rail transit st...

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Application Information

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IPC IPC(8): G08C19/02G08C23/00
Inventor 赵国刚徐田军王伟郑永志李小滨宋金川金轶鹏王福宏王琳
Owner DONGFANG ELECTRONICS
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