Attached peripheral data acquisition and distribution device for axis counting system

Abstract

The invention discloses an attached peripheral data acquisition and distribution device and an attached peripheral data acquisition and distribution method for an axis counting system. The device comprises a high-speed embedded microprocessor module and at least one series-parallel interface conversion module, wherein at least two channels are formed inside every series-parallel interface conversion module; every channel is used for receiving the data of a path of operation units of the axis counting system, reading the data through the high-speed embedded microprocessor module and outputtingthe data to the high-speed embedded microprocessor module; the high-speed embedded microprocessor module is used for setting a timing period of a system clock for every corresponding operation units to ensure that the first-in first-out buffer area of the channel in the corresponding series-parallel interface conversion module, which receives the data of the operation units, has a non-full set memory space when the timing period is reached; and when every timing period is reached, the data in the set memory space are acquired from the channel of the series-parallel interface conversion modulecorresponding to the operation units. The method disclosed by the invention can solve the problem of data packet loss when a plurality of paths of operation units are subjected to data acquisition atthe same time.

Description

technical field [0001] The invention relates to the technical field of railway microcomputer axle counting systems, in particular to peripheral data acquisition and distribution devices attached to the axle counting system. Background technique [0002] The railway microcomputer axle counting system is used to automatically monitor the section lines and station lines to detect the status of line sections, turnouts and strands as "idle" or "occupied". The microcomputer axle counting system mainly includes: a computing unit and a certain number of axle counting points assigned to the setting section. When the train departs from one end of a certain detection interval in the set section, enters the detection interval, and passes through the axle counting point at the departure end, the calculation unit processes the axle signal generated by the axle counting point sensor at the departure end; In the detection section, when passing through the axle counting point at the end of ...

AI Technical Summary

Problems solved by technology

[0007] However, in this method, since the data of each computing unit is in a continuous sending state, that is, the data packets of each computing unit are continuously sent according to a certain time interval, and due to the limitation of the resources of the single-chip microcomputer, the single-chip microcomputer When polling to collect the data of one of the computing units, the data of other computing units will inevitably be lost

It can be seen that the data collection and distribution device in the prior art will cause data loss, and the portability is poor

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