Data transmission rate matching method and device for remote data transmission system

Abstract

The application provides a data transmission rate matching method and a data transmission rate matching device of a remote data transmission system. The remote data transmission system comprises a transmitting end and a receiving end, wherein the receiving end comprises a plurality of updating units and corresponding buffer zones, and each updating unit executes the following process according to a set timing updating period: calculating a threshold value range of data volume in a buffer zone corresponding to the updating unit, judging whether the data volume in the buffer zone corresponding to the updating unit satisfies the threshold value range or not, calculating an adjusting value if the data volume cannot satisfy the threshold value range, adjusting the timing updating period of the updating unit according to the adjusting value, so that the adjusted timing updating period is closer to a timing collection period of a collector corresponding to the updating unit in the transmitting end, the data collection of the transmitting end is enabled to be matched with the data updating rate of the receiving end, and the problems such as signal distortion, uncertainty of transmission delay and data loss can be avoided.

Description

technical field [0001] The present application relates to the technical field of remote data transmission, in particular to a data transmission rate matching method and device for a remote data transmission system. Background technique [0002] The remote data transmission system is mainly used in multiple remote data transmission of different experimental sites and different test signals. [0003] In the prior art, remote data transmission systems such as figure 1 As shown, the remote data transmission system includes a sending end and a receiving end. The sending end regularly collects multiple channels of data through each collector, and stores the collected data in corresponding buffers, and then the data fusion unit reads each buffer and convert the data into Ethernet format (such as: Ethernet message), and carry out long-distance transmission through Ethernet, and the receiving end receives Ethernet message through Ethernet, and the Ethernet message is analyzed by the...

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Problems solved by technology

[0004] However, in the remote data transmission system in the prior art, when realizing the regular collection of data at the sending end and the regular update of received data, because the clocks between the sending end and the receiving end are independent, even if the data collection at the sending end and the data updating at the receiving end are set The rate is the same, but there is still a certain difference in the timing of the sending end and the receiving end. The rate of data collection at the sending end and the update rate of the receiving end do not match. Usually, when the data acquisition is slower than the data update, the buffer at the receiving end may be read empty. When the update time is prolonged, resulting in signal distortion; when the acquisition is faster than the update, there will be a certain amount of data in the receiving end buffer and the amount of data is unstable, which usually causes a large uncertainty in the transmission delay, and when the receiving end buffers When the amount of data in the zone reaches a certain level and the data overflows, it will also cause data loss.

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