Detection data synchronous acquisition system and detection data synchronous acquisition method for geometrical parameter measurement of track
A technology for detecting data and geometric parameters, which is used in railway vehicle shape measuring instruments, transportation and packaging, and railway vehicle body parts. Data integration difficulty, hardware failure rate, and the effect of avoiding parameter misalignment
Active Publication Date: 2019-02-22
广州大铁锐威科技有限公司
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[0006] 3. There is no local storage, and the storage depends on the computer;
[0007] 4. The data synchronization performance of each sensor is poor;
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[0035] The present invention will be further described below in conjunction with drawings and embodiments.
[0036] see Figure 1-4, a detection data synchronous acquisition system for the measurement of track geometric parameters, including: a central computing and processing unit, a clock synchronization unit, N serial communication interface units, a pulse capture unit, a communication interface unit and an analog acquisition unit; N≥1; The central operation and processing unit includes: a first processor, a second processor and a FIFO memory; the analog acquisition unit, the serial communication interface unit, and the pulse capture unit are all connected to the input of the first processor, and the The output end of the first processor is connected to the input end of the FIFO memory, the output end of the FIFO memory is connected to the input end of the second processor, and the output end of the second processor is connected to the communication interface unit; The clo...
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The invention discloses a detection data synchronous acquisition system for geometrical parameter measurement of a track. The system comprises a first processor, a second processor and an FIFO memory.An analogue acquisition unit, serial communication interface units and a pulse capturing unit are connected to the input end of the first processor, the output end of the first processor is connectedto the input end of the FIFO memory, the output end of the FIFO memory is connected to the input end of the second processor, and the output end of the second processor is connected to the memory unit and the communication interface units; and a clock synchronization unit is connected to the first processor, the second processor, the analogue acquisition unit, the serial communication interface units and the pulse capturing unit. The system comprises N serial communication interface units, so that the system is high in integration level. The system can acquire detection data of various high data output rate sensing equipment synchronously. Therefore, only one system is needed for geometrical parameter measurement of tracks with different configurations. The data integration difficulty andthe hardware failure rate caused by piling a plurality of sub systems are reduced.
Description
technical field [0001] The invention relates to the technical field of track detection, in particular to a detection data synchronous acquisition system and method for measuring track geometric parameters. Background technique [0002] The safety and stability of train operation largely depend on the smoothness of the track. During the track construction period and operation and maintenance period, it is necessary to accurately measure the geometric state of the track to facilitate the evaluation of its smoothness. The measurement of orbital geometric state has become a basic task of orbital construction and orbital maintenance. Various orbital geometrical state measuring instruments have emerged as the times require. They use different technical means such as optics, satellite navigation, and inertial navigation. Sensors, inclination sensors, odometers and other sensors can accurately measure various geometric parameters such as track direction, gauge, superelevation and mi...
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IPC IPC(8): B61K9/08
CPCB61K9/08
Inventor 王义邓勇杰杨富炜伍艳良
Owner 广州大铁锐威科技有限公司