Ultrasonic-penetrating-metal communication device

Abstract

The invention relates to the field of ultrasonic signal transmission, specifically to an ultrasonic-penetrating-metal communication device. A curing agent and epoxy resin are prepared by adopting a proportion of 1 to 4 and mixed evenly to form a coupling agent (4), abrasive paper is used to polish outer walls of two sides on a steel plate (1), thereby ensuring that the outer walls are parallel and smooth, a transmitting transducer (2) and a receiving transducer (3) are aligned and pasted on the two side walls of the steel plate (1) by adopting the coupling agent (4), piezoelectric wafers are guaranteed to be closely bonded to the steel plate walls with no gap being left, the transmitting transducer (2) is connected with a drive signal circuit (5), and the receiving transducer (3) is connected with a signal processing circuit (6). The ultrasonic-penetrating-metal communication device uses a system identification method for parameter determination of an ultrasonic communication channel model, effectively eliminates intersymbol interference, and acquires and transmits internal environmental information in a metal shielding object, thereby realizing errorless and high-speed transmission of information under the circumstance of not damaging integrity of metal walls.

Description

Technical field: [0001] The invention relates to the field of ultrasonic signal transmission, in particular to an ultrasonic metal-penetrating communication device. Background technique: [0002] In the field of industrial control, it is often encountered that digital signals are transmitted through metal obstacles. While some devices allow hole punching, some don't. For example, metal partitions, pressure vessels, pipes, etc. may need to be sealed so that no holes are allowed. For example, RF sensing and control networks deployed on ships must maintain connectivity across multiple watertight bulkheads. RF signals cannot pass through the bulkhead, an alternative method is to transmit data through the bulkhead. The designed bulkhead is required to be impermeable, so it is not feasible to use the method of breaking through the bulkhead to cross the line. The conductive shell walls also bring great difficulties to traditional communication methods, because electromagnetic w...

AI Technical Summary

Problems solved by technology

The designed bulkhead is required to be impermeable, so it is not feasible to use the method of opening the bulkhead and passing the line

The conductive shell walls also bring great difficulties to traditional communication methods, because electromagnetic waves will be severely attenuated due to the skin effect on these walls, so that effective signals cannot be received

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