Half-duplex communication device based on lamb wave and communication method thereof

A half-duplex communication and protocol information technology, applied in the direction of duplex signal operation, etc., can solve the problems of reduced stability, increased device complexity, increased system volume and weight, etc., to achieve small energy attenuation, improved stability, and transmission long distance effect

Active Publication Date: 2017-09-26
TIANJIN UNIV
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Problems solved by technology

Therefore, it is difficult to use in occasions where electromagnetic shielding is required (structural health detection is the case). At this time, a communication system is often added to the sensing system separately, which will increase the volume and weight of the entire system and improve stability. Reduced, greatly increased device complexity

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  • Half-duplex communication device based on lamb wave and communication method thereof
  • Half-duplex communication device based on lamb wave and communication method thereof
  • Half-duplex communication device based on lamb wave and communication method thereof

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Embodiment Construction

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the following embodiments do not limit the present invention by any means.

[0041] like Figure 1-5 As shown, the half-duplex communication device based on Lamb wave includes: a sensor main control module 1, a first signal processing circuit 2, a first transducer 3, a metal sheet 4, a second transducer 5, a second Signal processing circuit 6 and control machine 7;

[0042] The upper surface of the first transducer 3 is provided with a first upper electrode 8 and a first lower electrode 9; the upper surface of the second transducer 5 is provided with a second upper electrode 81 and a second lower electrode 91; the first The transducer 3 and the second transducer 5 are respectively fixed on the surface of the metal sheet 4 at a distance;

[0043] The output end of the sensor main control module 1 is electrically connected to the first signal p...

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Abstract

The invention discloses a half-duplex communication device based on a lamb wave and a communication method thereof. The half-duplex communication device based on the lamb wave comprises the components of a sensor master control module, a first signal processing circuit, a first transducer, a metal sheet member, a second transducer, a second signal processing circuit and a controller. According to the half-duplex communication device, the lamb wave in the metal sheet member is used as a signal carrier; the metal sheet member is used as a transmission medium; half-duplex communication is performed in a wireless manner; and a communication function is supplied for a data result of a sensor for structure health monitoring on the metal sheet member. The half-duplex communication device and the communication method thereof have advantages of reducing data transmission wiring and maintenance cost in a traditional sensor system, changing a traditional electromagnetic signal transmission method, realizing high suitability for multiple occasions, and improving stability of the whole system. Furthermore the half-duplex communication device and the communication method have advantages of small size, low cost, low energy attenuation, high transmission efficiency and long transmission distance.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic data communication, and particularly relates to a Lamb wave-based half-duplex communication device and a communication method thereof. Background technique [0002] The application range of sheet metal components involves aerospace, automotive, shipbuilding, pressure vessels and large chemical containers; among them, sheet metal components with a thickness of less than 8mm are particularly widely used. Since sheet metal components are easily damaged during production and use, they pose a great threat to the safety of their structures. Therefore, it is particularly important to use structural health detection technology to carry out online and effective monitoring to detect damage in sheet metal components in time for accident prevention. [0003] Structural health detection technology requires the use of sensing systems integrated or adhered to metal plate-shaped members to obtain real-time in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/16
CPCH04L5/16
Inventor 芮小博李一博曾周末刘圆圆封皓黄新敬
Owner TIANJIN UNIV
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