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Distribution detection device for orienting rail traffic safety assessment

A technology of safety assessment and detection device, applied in railway signal and safety, comprehensive factory control, comprehensive factory control, etc., to meet the needs of large-scale detection, enhance expansion capabilities, and simple on-site wiring

Inactive Publication Date: 2009-05-06
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The system can solve the problems of the existing detection system for rail transit safety assessment

Method used

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  • Distribution detection device for orienting rail traffic safety assessment
  • Distribution detection device for orienting rail traffic safety assessment
  • Distribution detection device for orienting rail traffic safety assessment

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Embodiment Construction

[0032] The breakthrough to solve the problems of the existing detection system for rail transit safety assessment includes two types of problems. One is that the detection system can be connected to multiple types of detection sensors and can have signal processing capabilities. Therefore, the data signal processor DSP and the complex programmable logic array CPLD are selected to complete the access and processing functions.

[0033] The second category is to reduce the total amount of system data transmission, simplify field wiring, and improve system expansion capabilities. Therefore, the method of separating fieldbus communication and network communication is adopted. The fieldbus adopts CAN communication, and the twisted pair is used as the CAN transmission line to transmit real-time detection data. , which greatly simplifies field wiring and can meet the needs of large-scale global detection.

[0034] like figure 1 is a schematic diagram of a distributed detection devic...

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Abstract

The invention relates to a distributed detection device for the rail traffic safety evaluation, which adopts a structure of a host computer and a front end computer. The host computer is a PC computer with a common network card; the front end computer adopts a DSP+CPLD structure, and is accessed to a plurality of a wide range of sensors used by the safety evaluation detection through a current- voltage converting circuit, a voltage-frequency converting circuit, a level converting circuit, a voltage adjusting circuit, and the like; and a CPLD expands access channels of the sensors and completes the relative signal processing operation. The front end computer connects with an Internet / local area network through a network communication controller, and communicates with the host computer by the large volume data way; and the site bus communication is realized among a plurality of front end computers through a CAN communication controller. The device is suitable for large range safety monitoring, and has simple wiring and good expandability.

Description

technical field [0001] The invention relates to a distributed detection device, in particular to a distributed detection device for rail transit safety assessment. Background technique [0002] The rail transit system includes three types: railway, subway and light rail. Each type of system includes rolling stock, operation control, traction power supply, lines and stations, so the safety assessment system of rail transit includes infrastructure, vehicles and transportation organization process and other aspects. Since rail transit is a large-capacity public transportation, its safe operation is extremely important. [0003] At present, domestic locomotives, vehicles, and EMUs are equipped with various sensors to detect the safe operation status; in large stations and yards, safety detection systems are also installed to detect the safety situation of the station and the passenger situation. The existing safety-oriented detection systems mainly include: [0004] ●Video sy...

Claims

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Application Information

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IPC IPC(8): G05B19/418G05B19/048B61L23/00
CPCY02P90/02
Inventor 张和生付月辉叶华揭志熹
Owner BEIJING JIAOTONG UNIV
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