Wireless secret communication system and method based on opto-acoustic phenomenon

A secure communication and wireless technology, applied in the direction of optical transmission system, transmission system, electromagnetic wave transmission system, etc., can solve the problems of high laser directivity, high cost, and high laser power requirements

Pending Publication Date: 2021-04-16
XIAN AIRCRAFT IND GROUP +1
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Problems solved by technology

However, wireless laser communication has high requirements for laser directivity, high requirements for laser power, and high cost.

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  • Wireless secret communication system and method based on opto-acoustic phenomenon
  • Wireless secret communication system and method based on opto-acoustic phenomenon
  • Wireless secret communication system and method based on opto-acoustic phenomenon

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] The photoacoustic phenomenon was first discovered by A.G. Bell in 1880. It uses a reflector that vibrates to change the direction of light, and superimposes sound signals on light signals to realize sound transmission. The essence of another photoacoustic phenomenon is that the energy transmitted by light heats the light-absorbing material, and the heat causes deformation, vib...

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Abstract

The invention discloses a wireless secret communication system and method based on an opto-acoustic phenomenon, and the system comprises an active transmission system and a passive transmission system, and the active transmission system comprises a first signal encoder, a first laser, a first opto-acoustic device, and a first signal decoder; the passive transmission system comprises a second signal encoder, a second laser, a second photoacoustic device, a second signal decoder, a spectroscope set, a photoelectric device, a posture adjusting mechanism and a posture adjusting controller; and the second laser is mounted on the posture adjusting mechanism. The active transmission end transmits a laser beam carrying a signal, the laser beam is converted into an electric signal through a photoacoustic device of the passive transmission end, and meanwhile, the passive transmission end obtains a response laser beam transmitting angle by measuring the laser beam pose of the active transmission end to complete signal response. According to the invention, the requirement on the incident angle of the laser beam is reduced by utilizing the photoacoustic principle, and the incident angle is obtained by measuring the incident beam, so that the information is accurately fed back, and the low-cost near-field secret communication is realized.

Description

technical field [0001] The invention belongs to the technical field of wireless security communication, and in particular relates to a wireless security communication system and method based on photoacoustic phenomenon. Background technique [0002] With the continuous popularization and application of robots and intelligent technologies, wireless communication technology has gradually been widely used in the manufacturing industry. In particular, mobile robots have to adopt wireless communication methods in order to communicate during work. In scenarios with confidentiality requirements, existing wireless or near-field communication methods such as WIFI are strictly prohibited to avoid information leakage caused by electromagnetic communication methods. At present, in order to realize communication between two devices in a confidential scenario, a physical isolation method is usually adopted, such as a security hinge device. The above methods are complex, expensive, ineff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/85H04B10/11H04B10/50H04B10/516
Inventor 李红卫左康赵飞梅雪松
Owner XIAN AIRCRAFT IND GROUP
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