Grating axle counting track circuit system and working method

Abstract

The invention discloses a grating axle counting track circuit system and a working method. The grating axle counting track circuit system comprises a grating axle counting device, a ZPW-2000A track circuit and a detection module. The grating axle counting device and the ZPW-2000A track circuit are used for jointly controlling the detection module. The detection module is used for transmitting therail section occupation or rail damage information to a train control center. The working method comprises the following steps: track section occupation inspection is carried out by adopting the grating axle counting device; rail damage inspection is carried out by adopting the ZPW-2000A track circuit; the grating axle counting device and the ZPW-2000A track circuit jointly control the action state of the detection module; the train control center collects the action state of the detection module to obtain the track state. According to the invention, the occupancy checking function is providedthrough the grating axle counting device, and the ZPW-2000A track circuit provides functions of code sending and rail damage inspection, so, through the cooperative use of the grating axle counting device and the ZPW-2000A track circuit, respective advantages can be given into play, and the railway transportation safety can be improved.

Description

technical field [0001] The invention belongs to the field of rail transportation, and in particular relates to a grating axis counting rail circuit system and a working method. Background technique [0002] ZPW-2000A track circuit is widely used at home and abroad ( Figure 7 It shows the interface diagram of ZPW-2000A track circuit and train control center in the prior art), but in the process of use, due to the uncertainty of the wheel-rail contact resistance, the track circuit loses the shunt inspection, and the leakage of the ballast bed resistance exceeds the track circuit application. Conditions and other issues will affect the occupancy inspection function of the track circuit, which in turn will affect the application of the track circuit, bring safety hazards to railway operations, and affect transportation efficiency. [0003] At present, ZPW-2000A frequency-shifting pulse track circuit is used to solve the problem of branching in the station (the frequency-shiftin...

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Problems solved by technology

[0002] ZPW-2000A track circuit is widely used at home and abroad ( Figure 7 It shows the interface diagram of ZPW-2000A track circuit and train control center in the prior art), but in the process of use, due to the uncertainty of the wheel-rail contact resistance, the track circuit loses the shunt inspection, and the leakage of the ballast bed resistance exceeds the track circuit application. Conditions and other issues will affect the occupancy inspection function of the track circuit, which in turn will affect the application of the track circuit, bring safety hazards to railway operations, and affect transportation efficiency

[0003] At present, ZPW-2000A frequency-shifting pulse track circuit is used to solve the problem of branching in the station (the frequency-shifting pulse track circuit is a track circuit in which pulse signals and frequency-shifting signals are superimposed). This track circuit is not suitable for track bed resistance If the leakage exceeds the track circuit application conditions, etc.; for the section where the ballast bed resistance leakage exceeds the track circuit application condition, the section length of the track circuit is cut, such as the original 1200m section, and the section length is cut into 3 sections. The track circuit with a length of 400m, but for the reconstruction of the existing line, it is necessary to remove the compensation capacitor on the original track, re-arrange and install it, and the construction volume is relatively large. In addition, additional track circuit equipment is required, and the equipment cost is high

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