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Programmable logic control system applied to subway train

A programming logic control and train technology, which is applied to railway car body parts, signal indicators on vehicles, railway signals, etc., can solve problems such as slow response speed, and achieve the effects of intuitive wiring, convenient programming, and flexible control methods

Pending Publication Date: 2020-04-10
CRRC DALIAN R & D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the input and output units generally adopt a non-redundant structure, no operating system, real-time switching and slow response speed, which cannot meet the timely switching of redundant boards in the event of a single LCU board failure to ensure the drive contactor no malfunction

Method used

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  • Programmable logic control system applied to subway train
  • Programmable logic control system applied to subway train
  • Programmable logic control system applied to subway train

Examples

Experimental program
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Embodiment

[0022] Assume that the train adopts a 4-section formation, 2-moving and 2-drag formation. Among them, M is a motor car without a cab, and Tcp is a trailer with a cab. Two cascaded 3U LCU chassis are installed on the head car, and one independent LCU chassis is installed on the middle car, making a total of six 3U LCU chassis on the whole vehicle. The functions of each LCU are independent of each other to realize their respective logic control functions. Each LCU can communicate with the train network control system through the MVB interface of the train network bus, and report the LCU status data and fault information, and the LCUs can communicate through CAN. LCU is adjusted according to different projects and different forms of train formation, and is suitable for trains of all formation forms.

[0023] As a preferred way: such as figure 2 As shown, the LCU chassis is equipped with a set of redundant power supply boards (A / B), which respectively supply power to the funct...

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PUM

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Abstract

The invention discloses a programmable logic control system applied to a subway train. The system comprises a programmable logic control unit, an embedded real-time operation module, a graphical programming module and a storage recording module are operated on the programmable logic control unit, and the periphery of a main control chip is connected with a communication interface circuit; and theprogrammable logic control unit at least comprises a power supply board card, a gateway board card with a recording function and various communication interfaces, two redundant main control board cards, a large bypass board card with four independent CAN communications, a plurality of groups of redundant digital quantity input and output board cards, an interface board card for external wiring anda back board, the main control board card is used for controlling input and output of digital quantity signals and controlling redundancy switching of fault board cards, the gateway board card is indata communication with external equipment, and the digital quantity input and output board cards are used for collecting and driving data signals.

Description

technical field [0001] The invention relates to the field of low-voltage control circuits of rail transit vehicles, in particular to a programmable logic control system applied to subway trains. Background technique [0002] The low-voltage control loop of a subway train is a complex and important subsystem in the entire train electrical system, and the most important and largest number of electrical components are relays. The signal transmission and logic control of subway trains are mostly completed by relays. A single train can use up to 200 relays, and most of the signals controlled by relays are related to the key signals and logic of the train. Due to the limited space of the screen cabinets of subway trains, the relays are generally installed close together, which is not conducive to heat dissipation, and dust is easy to accumulate after a long time of use; some relays operate frequently, up to 200 times a day, or the coils are powered on for a long time. The long po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61L15/00
CPCB61L15/0036
Inventor 刘博吴景国刘鹏李元治李美华王欣立
Owner CRRC DALIAN R & D CO LTD
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