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Method and system for multiplexing data distribution of gnss motherboard serial ports

A data distribution and mainboard technology, applied in the GNSS field, can solve problems such as low reliability and complex implementation, and achieve the effects of high reliability, accurate two-way transmission, and avoiding data loss transmission

Active Publication Date: 2018-07-17
GUANGZHOU HI TARGET SURVEYING INSTRUMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, it is necessary to provide a method and system for realizing simple and highly reliable GNSS motherboard serial port multiplexing data distribution in view of the problems of complex implementation and low reliability in the general GNSS motherboard serial port multiplexing data distribution method

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  • Method and system for multiplexing data distribution of gnss motherboard serial ports

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Embodiment Construction

[0019] The full name of GNSS is Global Navigation Satellite System, which refers to all satellite navigation systems, including global, regional and enhanced.

[0020] Such as figure 1 Shown, a kind of method for GNSS motherboard serial port multiplexing data distribution, comprising steps:

[0021] S200: Identify the type of output data of a single serial port in the GNSS motherboard and the time label of each type of output data, classify the output data, and record the corresponding frequency of each type of data, and obtain the classification result.

[0022] A single serial port in the GNSS mainboard is used as the research object in order to achieve multiplexing of a single serial port. A single serial port in the GNSS motherboard outputs a large number of data streams in real time, and the data streams include multiple types of data, and each type of data may also be output at different frequencies (output intervals). Specifically, the above data stream may include NM...

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Abstract

The invention provides a GNSS main board serial port multiplex data distribution method and system. The method comprises the steps of: identifying the type of output data of a single serial point in a GNSS main board and the time label of the output data of each type; classifying the output data, recording the frequency corresponding to each type of data, and obtaining a classifying result; establishing a socket thread, and identifying the type and frequency of the data requested by a client; and according to the type and frequency of the data requested by the client, searching the classifying result for the output data matched with the requested data in type and frequency, and sending the found output data to the corresponding client. The whole process is simple, the socket thread and a data type and frequency matching mode are adopted to realize accurate bidirectional transmission of the data, the data loss and unsuccessful transmission caused by pipeline breaking are avoided, the reliability is high, and GNSS main board serial port multiplex data distribution can be realized simply and reliably.

Description

technical field [0001] The present invention relates to the technical field of GNSS (Global Navigation Satellite System, Global Navigation Satellite System), in particular to a method and a system for distributing multiplexed data through a GNSS motherboard serial port. Background technique [0002] With the rapid progress of GNSS technology and the popularization of applications, more and more GNSS receivers are used, and the market's functional requirements for GNSS receivers are also increasing. [0003] For the same GNSS receiver, it is required to support multiple data transmissions and data records at the same time, and the general GNSS motherboard board only has two or three serial ports. When facing this multi-data demand, it is definitely not enough if a single serial port corresponds to a single data transmission or record. Especially with the emergence of GNSS receivers based on systems such as linux, the system has changed from a single program to a multi-program...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/37
CPCG01S19/37
Inventor 韩伟浩莫文晖於永东潘久辉欧阳仲南
Owner GUANGZHOU HI TARGET SURVEYING INSTRUMENT CO LTD