Method and device for acquiring transmission data
A technology for transmitting data and data, applied in the field of communication, can solve the problem of low accuracy of downhole parameter data, achieve accurate acquisition and improve accuracy
Inactive Publication Date: 2013-05-15
北京理工微电科技有限公司
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[0005] In view of this, the embodiment of the present invention provides a method and device for obtaining transmission data to solve the problem of low accuracy in obtaining downhole parameter data of oil wells in the prior art
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[0022] In the embodiment of the present invention, in order to effectively improve the accuracy of obtaining and transmitting the downhole parameter data of the oil well, the downhole parameter data is digitized, and according to the correlation calculation in the signal received by the receiving end, the time for sending the signal is determined so as to be accurately received and sent. Restore downhole parameter data, such as figure 2 As shown, the flow chart of the data transmission method provided by the embodiment of the present invention specifically includes the following steps:
[0023] S201: The receiving end performs a correlation operation on the received first signal and a locally generated second signal, wherein the first signal is composed of an identification signal and data, and the second signal is composed of a plurality of identification signals.
[0024] The second signal locally generated by the receiving end is a continuous signal. The first signal rece...
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The invention discloses a method and a device for acquiring transmission data, which are used for solving the problem of the prior art that the accuracy of acquiring data of underground parameters is poor. The method comprises the following steps: carrying out relevant operation on a first signal received by a receiving terminal and a second signal generated locally through the receiving terminal, wherein the first signal consists of an identification signal and data, and the second signal consists of a plurality of identification signals; determining the position of the identification signalin the first signal according to the result of the relevant operation; determining the time of receiving the first signal according to the position of the identification signal; and acquiring the data in the first signal according to the time of receiving the first signal. The scheme provided by the invention can effectively improve the accuracy of acquiring the data transmitted by a sending terminal, thereby being able to accurately acquire the data of the underground parameters.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for acquiring downhole wireless transmission data of an oil well. Background technique [0002] At present, the collection of downhole data of oil wells is mainly realized by measuring instruments placed downhole. When the measuring instruments collect downhole parameters, such as well temperature, well pressure and other parameters, and convert the collected pressure or temperature parameters into electric Signal, and then the electrical signal is sent to the well by cable so that the staff can understand the situation in the well. However, the cabled test instrument is expensive, difficult to place, and prone to problems such as entanglement. [0003] However, in the prior art, when the electrical signal converted from the downhole parameters is transmitted, it needs to be converted into an electrical-acoustic conversion first, that is, converted int...
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IPC IPC(8): H04L1/00G08C17/02E21B47/12
Inventor 任桂山马先平高巍李华林史明义苏锋方睿李明赵智
Owner 北京理工微电科技有限公司