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Data through-the-earth transmission method based on sound waves

A transmission method and data technology, applied in the field of information communication, can solve the problems affecting communication distance and receiving sensitivity, and achieve the effect of simple operation and suppression of common mode signals

Inactive Publication Date: 2015-06-03
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this transmission method is severely restricted by the environmental parameters of the earth, and the contact impedance between the electrode and the earth seriously affects the communication distance and receiving sensitivity

Method used

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  • Data through-the-earth transmission method based on sound waves
  • Data through-the-earth transmission method based on sound waves
  • Data through-the-earth transmission method based on sound waves

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Embodiment Construction

[0020] In the drawings, the same parts are represented by the same symbols in different views, and the described elements are not necessarily drawn to scale. The present invention will be further described below in conjunction with the drawings and embodiments.

[0021] figure 1 Describe the system structure of a data transmission method based on sound waves, including an information sending end and an information receiving end. On the ground, the operator sends the information to be sent to the information sending device through the corresponding host computer software, and the device modulates and amplifies the information, and then inputs it to the sound generating device through the cable. In order to better couple the sound waves with the ground, the sound-generating equipment is buried in the ground. In the ground, the microphone is embedded in the ground and receives the sound wave signal from the ground. When the sender sends information, the sound-generating device g...

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Abstract

The invention discloses a data through-the-earth transmission method based on sound waves, and belongs to the technical field of through-the-earth communication. The data through-the-earth transmission method is characterized in that low-frequency sine waves are taken as an information carrier, after data to be transmitted are processed such as being amplified and modulated through information transmitting equipment, sound wave signals are generated from sound generation equipment and are coupled to the earth, and then transmission of data is completed; after information is transmitted to a receiving end, a sound wave sensor senses the sound wave signals and the sound wave signals are converted into electric signals, the electric signals are processed such as being amplified, filtered and demodulated by information processing equipment at the receiving end, and information transmitted from a transmitting end is recovered. According to the method, due to adoption of a pulse width modulation and demodulation technique, the data transmission reliability is improved, and with the combination of hardware filtering and software filtering, a low bit error rate of information is ensured, the method can be effectively applied to ground-to-underground information issuing and rescue and relief work in hazard in underground working environments such as coal mines.

Description

technical field [0001] The application background of the present invention is information communication from the ground to the underground in underground working environments such as coal mines. The content of the invention relates to the modulation and demodulation of information and the sending and receiving of data. The code rate belongs to the technical field of ground-penetrating communication. Background technique [0002] In many underground operating environments, such as coal mines, petroleum and other fields, it is necessary to ensure the smooth communication system between the ground and the underground, so that the underground staff can understand the ground conditions or the ground staff can send forecast information to the underground. Therefore, the through-ground communication must ensure the validity of the data. , accuracy and real-time requirements. At present, typical through-the-earth communication methods mainly use electromagnetic waves or elastic wav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B11/00
Inventor 江虹杨俊金世燕殷明勇张影付云生马绍良张秋云
Owner SOUTHWEAT UNIV OF SCI & TECH
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