Ultrasonic wave communication transmission / reception efficiency improving method

Abstract

To contribute accuracy improvement by providing a method using materials differing from a conventionally used transmission / reception device or sound wave that is utilized for underwater radio communication, inspection, or the like.SOLUTION: A conventionally used sound wave is that in a frequency band (sound wave having a long wavelength) capable of being heard using human ears, but a sound wave referred to as an ultrasonic wave in a frequency band (sound wave having an extremely short wavelength) incapable of being heard using human ears is used. A shape of a sound wave transmission / reception surface (diaphragm) of a device to be used for communication and inspection is made to be a curved surface shape differing from a planar shape that is conventionally typical, which improves transmission / reception performance of the device because focusing action is applied to the sound wave at the time of transmission / reception. By using the ultrasonic wave and the device having the transmission / reception surface (diaphragm) in the curved surface shape, the problem is solved.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to the application of ultrasonic communication, inspection, and detection technology. [Background technology]

[0002] Ultrasonic communication, inspection, and detection technologies.

[0003] The physical effects of wave energy (wave phenomenon). Summary of the Invention [Problem to be solved by the invention]

[0004] Ultrasonic waves are used in underwater (liquid) wireless communication, inspection, detection, and other technologies (sonar communication, fish finders, echo inspection, etc.). The devices used for these have the problem of not being very accurate. In addition, radio waves (radar) were used for these purposes on the ground and in the sky (atmosphere), but there were issues with radio waves, such as restrictions on their use in some areas, having to deal with jamming signals, and incurring radio wave usage fees.

[0005] Until now, the ultrasonic transmitting and receiving surfaces (vibration plates) of devices used for underwater (liquid) ultrasonic wireless communication, inspection, detection, etc. have generally been flat, but this will be designed to have a curved shape (convex spherical shape) that curves outward. If the ultrasonic transmitting / receiving surface (vibration plate) is flat, the ultrasonic waves will spread over a wide area as they travel, whereas if it is curved (convex spherical), the ultrasonic waves will be focused and will travel in a straight line. By utilizing the physical effects of this wave energy (wave phenomenon), it is possible to improve the accuracy and performance of the device. Furthermore, when conducting wireless communication, observation, detection, etc. using radio waves, issues such as dealing with places where radio wave use is restricted, countermeasures against jamming radio waves, and cost burden for radio wave usage fees can be addressed by using ultrasound not only underwater but also on land and in the air (atmosphere) for wireless communication, observation, detection, etc. (Ultrasonic wireless communication devices are the same underwater and in the air, but differ in terms of whether they are waterproof or not, and how relay stations are installed.)

Claims

1. Conventionally, the ultrasonic transmitting and receiving surfaces (diaphragms) of devices for underwater (liquid) ultrasonic wireless communication, inspection, and detection (sonar communication, fish finders, echo inspection, etc.) have generally been flat. However, by making this a curved surface (convex spherical shape) that is curved outward, a focusing effect is applied to the ultrasonic waves when they are transmitted and received. A method of utilizing this physical phenomenon to improve the accuracy and performance of equipment. Furthermore, since the communications system is intended for underwater use, the device must be waterproof, capable of transmitting and receiving in 360 degrees, and capable of operating at all depths from near the surface to the bottom. In order to achieve this, stakes are driven into the bottom of the water, buoys are floated on the surface, and the stakes and buoys are connected by wire ropes or similar. Then, a number of spherical, waterproof ultrasonic communication devices are installed on wire ropes between the bottom and the water surface. This method involves deploying such equipment in various locations underwater to function as relay base stations for ultrasonic communications. Also, similar to underwater wireless communication equipment, the ultrasonic transmitting and receiving surface (vibration plate) of a fish finder or echo inspection device is curved outward (convex spherical shape), thereby improving the accuracy and performance of underwater (liquid) inspection and detection.

2. Radio waves (radar) have been used for radio communication, observation, and detection on the ground and in the sky (atmosphere). On the other hand, it was previously believed that radio waves could not be transmitted (used) underwater (in liquids), so ultrasound has been used as a substitute for radio waves for underwater (liquid) wireless communication, inspection, detection, etc. Ultrasound is considered a substitute for radio waves in places where radio waves cannot be used, and so radio communication, inspection, and detection using ultrasound have mainly been used underwater (in liquid). However, even on the ground or in the air (atmosphere), there are cases where it is more convenient (effective) to use ultrasound than radio waves when considering areas where the use of radio waves is restricted, communication over short distances, costs such as obtaining radio wave usage rights and fees, and measures to prevent jamming of radio waves used for communication or detection purposes. Therefore, the method described in claim 1 can be used not only underwater (in liquid) but also for communication, observation, detection, etc. on the ground or in the air (atmosphere). Also, the method is used in a device for non-destructive testing of the inside of a solid to improve accuracy. A method for using an ultrasonic-compatible spherical communication device to improve communication environments for communication, observation, detection, etc. on the ground or in the sky (atmosphere), by making the shape of the ultrasonic transmission / reception surface (diaphragm) curved outward (convex spherical shape), which causes a focusing effect on the ultrasonic waves during transmission and reception and improves the accuracy of the device. (The communication equipment is the same as the underwater version, but the waterproofing and installation method are different.)

3. A device, facility, defense equipment, aircraft, ship or other transportation means, artificial satellite, planetary probe, remotely controlled construction machine, or agricultural machine, using the method according to claim 1 or 2.

4. A service or business using the device, facility, defense equipment, aircraft, ship or other transportation means, artificial satellite, planetary probe, remotely controlled construction machine, or agricultural machine according to claim 3.