Centralized control type electric control system of rail technical vehicle

Abstract

The invention provides a centralized control type electric control system of a rail technical vehicle. The centralized control type electric control system comprises an I / O module group and a PLC. TheI / O module group includes a plurality of I / O modules; at least one of the plurality of I / O modules is connected to a controlled device; and each I / O module collects state information of the controlled device connected to the I / O module, converts the state information into a data frame, and then transmits the data frame to the PLC or converts a data frame sent by the PLC controller into a controlsignal and transmits the data frame to the connected controlled device. According to the invention, the system includes the I / O module group and the PLC controller; and the I / O module has advantages of simple function and low cost by being compared with the PLC controller. Therefore, compared with the distributed control type electric control system of a rail technical vehicle, the centralized control type electric control system only needs one group of PLC controllers, so that the hardware cost of the electric control system is lowered.

Description

technical field [0001] The invention relates to the technical field of engineering vehicles, in particular to a centralized control electronic control system for rail engineering vehicles. Background technique [0002] Rail engineering vehicle is a special type of railway engineering machinery, which is mainly used for various construction operations of new lines and maintenance of existing lines. Specifically, the rail engineering vehicles include rail cars used for traction, various types of rail vehicles used for operations, and various rail vehicles combined with traction and operation, and are mainly used for various construction operations of new lines and existing lines. maintenance work. [0003] The main function of the electronic control system of the rail engineering vehicle is to control the running of the locomotive and control the on-board operation equipment. Please refer to figure 1 , which is a structural schematic diagram of an existing decentralized con...

AI Technical Summary

Problems solved by technology

PLC controller is a kind of programmable device, its price is high, and when the locomotive equipment and construction machinery of rail engineering vehicles increase, the number of PLC controllers required also increases, and the cost rises linearly

[0007] 2) The software structure of the electronic control system is too discrete

[0008] Problem 1: The software development of the electronic control system is difficult

[0009] Problem 2: The development and testing workload of the software function adjustment of the electronic control system is heavy

As mentioned above, in the distributed control electronic control system software, when complex tasks require some function adjustments, upgrades, or one of the devices needs to modify the control logic for some reason, the developer needs to adjust all the controllers that are coupled with it control logic, re-write their control program and re-test, too much work

[0010] Problem 3: Version control is complicated

In the decentralized control electronic control system, one type of rail engineering vehicle corresponds to dozens of PLC control programs. The correct version of each program can ensure the normal function of the vehicle. When the program of a certain PLC controller needs to be upgraded to a specified version , all PLC control programs that have a coupling relationship with it need to be upgraded to the corresponding version one by one. This process is complicated and error-prone, which brings huge upgrade and maintenance costs.

[0011] 3) The hardware and software independence of the electronic control system is low, and the code reuse rate is low

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