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Design method of a railway signal machine system
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A railway signal machine and design method technology, applied in the direction of railway signals, visual signals, railway car body parts, etc., can solve the problems of poor scalability, low work efficiency, inconvenient adjustment of cables, etc., and achieve the effect of short response time and high sensitivity
Active Publication Date: 2019-02-12
宁波思高信通科技有限公司
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Abstract
Description
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Problems solved by technology
Many cables need to be configured on site, and there are problems such as inconvenient adjustment of the laid cables, poor scalability, and low work efficiency
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0028] Example 1: Signal lamp driver generation process
[0029] The software of the signal lamp driver board includes three modules: the signal lamp driver module, the signal lamp operation status acquisition module and the CAN communication module. Through the CAN communication module, the signal light driver board can receive the signal light control scheme issued by the main control board, and the signal light driver module drives the corresponding signal light to work according to the received control scheme. At the same time, the signal lamp driver board can use the signal lamp operation status acquisition module to collect the operation status information of the signal lamp. By processing the collected information, it can judge whether the signal lamp controlled by the signal machine is working normally. state, through the error handling mechanism, firstly send a message of "drive failure" to the main control board, and then control the signal light connected to this bo...
Embodiment 2
[0030] Embodiment 2: The signal acquisition process of the vehicle information acquisition board
[0031] The vehicle information collection board collects a level signal from the DB25 interface every 100ms, and then processes the collected level signal every 500ms. Then, within a period of time, the data record formed by one detector and its corresponding waveform. A 0-1 change plus a 1-0 change constitutes a pulse, the data of a vehicle. For a detector, starting from the value at time 0, the XOR operation is performed sequentially, a 1 will appear when 0 changes to 1, and a 1 will appear when 1 changes to 0, so that several 1s will appear within a period of time. Because two 1s count as a pulse, that is, a car, so divide the number of 1s by 2 and take an integer (there may be a 1-0 transition at the beginning, or a 0-1 transition at the end, In this way, the number of 1 is an odd number, which cannot be divided by 2), and the traffic flow during this period can be obtained...
Embodiment 3
[0035] Embodiment 3: The station work process of the signal machine
[0036] Take a three-way station as an example, as follows:
[0037] The station has a total of 7 signal racks, namely X, 51, Sfl, 53, DI, D3, DS, and a total of 20 light positions S3L, respectively: XU, XL, XH, XD, XZU, SIL, SIH , SIB, S11L, S11H, S11B, S3H, S3B, DIB, DIA, D3B, D3A, DSB, DSA.
[0038] The above 7 signal machines, the corresponding lighting combinations are XJX combination, 51, Sn and 53FX combination, and DX combination. The corresponding signal relays that need to be collected are:
[0039] X (LXJ, ZXJ, YXJ, TXJ, YSXJ)
[0040] 51, 511, 53 (LXJ, DXJ)
[0041] DI, D3, DS(DX)
[0042] Through the logical combination of functions, the following possibilities are obtained:
[0043] XL=LXJ&ZXJ&TXJ&1DJ
[0044] XIU=LXJ&ZXJ&! TXJ&IDJorLXJ&! ZXJ&ZDJ&IDJ
[0045] XZU=LXJ&! ZXJ&! TXJ
[0046] XH==! LXJ&IDJ
[0047] XB=! LJ&YXJ
[0048] 5IL-5ILXJ&! SIDXJ
[0049] 5IH=! 5ILXJ&! SIDX...
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Abstract
The invention relates to a design method of a railway signal machine system, and belongs to the field of railway informationization. According to the design method, a computer technology and a modern communication technology are adopted, signal machines form a network on the spot through intellectualized design of the signal machines, and a single chip microcomputer PIC18F4580 serves as a core processor of a signal lamp driving plate and a vehicle information collection plate; a signal lamp is controlled to be turned on and off through a driving circuit composed of a photoelectric coupling, controllable silicon and other elements, and the work state information of the signal lamp is collected through a state feedback circuit composed of a current sensor, a voltage comparator and other components; data collection, analysis and communication of the vehicle information can be completed through the vehicle information collection plate; and traffic flow information detected by a detector is transmitted to the single chip microcomputer through a collecting circuit and a shaping circuit and subjected to data analysis through the single chip microcomputer, and the vehicle passing condition is judged. Intelligent and networked control over all the signal machines in a station yard can be achieved. The system has the advantages of being simple in structure, convenient to maintain, capable of conducting fault location alarming, self diagnosis and health degree analysis, accordingly, the safety, maintenance and reliability of the system are improved, delayed fault time is shortened, meanwhile, the signal project construction amount is greatly decreased, and the cable investment is reduced.
Description
technical field [0001] The invention belongs to the technical field of railways, and provides a method for designing a railway signal machine system, using a single-chip microcomputer PIC18F4580 as its core processor to realize the intelligent control of the signal machine. Background technique [0002] With the development of my country's railway transportation and the development and application of modern electronic technology and computer technology, railway signals are developing in the direction of intelligence and networking. From the original relay interlock to the widely used computer interlock and microcomputer Monitoring, TDCS system, etc., railway signals are undergoing unprecedented changes, but as an important basic equipment of the railway signal system - the signal machine, still uses the original relay interlocking control method for lighting. In the lighting circuit in the relay interlock control, each signal machine is controlled by a separate signal lightin...
Claims
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Application Information
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