Method for transmitting signal by uninsulated railway and signal transmitter

A track signal, non-insulation technology, applied in the direction of railway signal, railway signal and safety, vehicle control route device, etc., can solve the problem of low precision and unfavorable signal stability, etc., to increase the output of alarm relay, meet the station area, The effect of improving the installation method

Active Publication Date: 2012-05-30
固安信通信号技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the above devices are: the functions of the two transmitters only have several types of carrier frequency information and low frequency signals, no alarm relay, no redundancy, low frequency frequency accuracy is ±0.1Hz, carrier frequency accuracy is ±1Hz, low accuracy is not conducive to signal transmission stability

Method used

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  • Method for transmitting signal by uninsulated railway and signal transmitter
  • Method for transmitting signal by uninsulated railway and signal transmitter
  • Method for transmitting signal by uninsulated railway and signal transmitter

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Example 1: see figure 1 , a non-insulated track signal transmission method, comprising the following steps:

[0046] Step 101: Set the initial encoding, and generate carrier frequency encoding information and low frequency encoding information through the carrier frequency encoding circuit and the low frequency encoding circuit;

[0047] Step 102: Combining the frequency-shifted sine wave signal with the carrier frequency coded information and the low-frequency coded information through the signal synthesis unit, and the signal synthesis unit outputs the frequency-shifted signal and the low-frequency signal;

[0048] Step 103: The frequency-shifted signal and the low-frequency signal are detected by the detection unit for detecting the signal according to the carrier frequency coding information and the low-frequency coding information;

[0049] Step 104: After the frequency shift signal is detected correctly, the detection unit generates a safety gate circuit driving si...

Embodiment 2

[0053] Embodiment 2: a non-insulated track signal transmission method, including the following steps:

[0054] Step 101: According to the encoding conditions, generate carrier frequency encoding information and low frequency encoding information through the carrier frequency encoding circuit and the low frequency encoding circuit;

[0055] Step 102: Combining the carrier frequency coded information and the low frequency coded information with a signal synthesis unit for frequency-shifted sine waves, and outputting the frequency-shifted signal and the low-frequency signal;

[0056] Step 103: The frequency-shifted signal and the low-frequency signal are detected by the detection unit for detecting the signal according to the carrier frequency coding information and the low-frequency coding information;

[0057] Step 104: When the frequency-shifted signal and the low-frequency signal are detected simultaneously, the transmission of the signal is stopped due to an error.

Embodiment 3

[0058] Embodiment 3: same as embodiment 1, wherein said detection unit also includes the following steps to frequency-shift signal detection:

[0059] Step 1011: According to the carrier frequency encoding information generated by the carrier frequency encoding circuit, generate a filter clock through the clock generation circuit;

[0060] Step 1012: Perform band-pass filtering and low-pass filtering on the frequency-shifted signal through the filter demodulation circuit according to the filter clock;

[0061] Step 1013: performing band-pass filtering and low-pass filtering on the frequency-shifted signal for shaping;

[0062] Step 1014: Generate a drive signal for the safety gate circuit through the frequency verification circuit through the shaped frequency-shifted signal.

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Abstract

The invention relates to the technology of transmitting railway signals, in particular to a uninsulated railway transmitting technology. The method for transmitting signals by the uninsulated railway comprises the steps of: generating carrier encoding information and low frequency encoding information, synthesizing and detecting, and transmitting the signal when the signal is detected to be correct. The invention further provides a signal transmitter consisting of functional moulds of a low frequency encoding circuit, a carrier encoding circuit, a signal synthesizing unit, a detection unit and the like. The invention has the advantages of effectively reducing the volume of the device, improving the mounting way, and meeting the request of on-site occupied area on the premise that technical indexes meet the requirement.

Description

technical field [0001] The invention relates to railway signal transmission technology, in particular to a non-insulated track circuit transmission technology. Background technique [0002] 2000 Non-insulated track circuit technology is based on the introduction and localization of French UM71 (U means universal, M means modulation) non-insulated track circuit technology, combined with national conditions, to improve system security, system transmission performance and reliability. Re-development. Compared with the latter, the former has improved in terms of track circuit transmission safety, transmission length, system reliability, and improved technical performance-price ratio in combination with national conditions, and reduced project cost. [0003] The UM71 track circuit is a universally modulated electrically insulated track circuit. It is controlled by the transmitter EM under the command of the coding system to generate a low-frequency modulated frequency shift sign...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61L3/24
Inventor 孙小礼
Owner 固安信通信号技术股份有限公司
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