Underwater locator beacon for flight recorder

A flight recorder and underwater positioning technology, applied in the aviation industry, can solve problems such as reducing the cost of transmitters

Inactive Publication Date: 2016-08-24
高沿 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve this series of problems, the present invention provides a flight recorder underwater positioning transmitter, which adds two components to the existing ULB; these two components are hydrophone (hydrophone) and solid state relay (Solid State Relay, referred to as SSR); the present invention is suitable for improving the difficulty of finding flight recorders after an air disaster over water, and can also reduce the cost of sending transmitters during normal storage

Method used

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  • Underwater locator beacon for flight recorder

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1: as figure 2 As shown, the underwater positioning transmitter of the flight recorder is a solid state relay 4 connected in series in the signaling circuit composed of the power supply 1, the switch 2 and the sounder 3 of the conventional flight recorder underwater positioning transmitter. A hydrophone 5 is connected to the relay 4, and the hydrophone is connected to the control current terminal (input terminal) of the solid state relay;

[0026] After the "switch" is immersed in water and closed, the solid-state relay (that is, the electronic component marked "SSR") is still in the disconnected state; only on the basis of water immersion, the hydrophone 5 detects the sound wave signal, and generates a micro-current to trigger the solid-state relay. The entire circuit will be energized.

[0027] certainly, figure 2 The premise in which the design works is that the hydrophone has a high enough frequency resolution of the sound wave so that it will not be ...

Embodiment 2

[0028] Embodiment 2: as image 3 As shown, the underwater positioning transmitter of the flight recorder is connected in series with three solid-state relays 4 in the signaling circuit composed of the power supply 1, the switch 2 and the sounder 3 of the conventional flight recorder underwater positioning transmitter. Each solid state relay 4 is connected to a hydrophone 5; the three hydrophones 5 respectively identify three different band sonar signals;

[0029] Each solid state relay is supplied with control current by a different hydrophone, and each hydrophone operates at a different frequency. In this way, after the ULB is immersed in water, if the sounder is to be turned on, it is necessary to make all the hydrophones receive the acoustic signal in their own working band at the same time, thereby closing all the solid state relays at the same time. In this way, even if the natural sound in the ocean can trigger one or more hydrophones, as long as not all the hydrophones a...

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Abstract

The invention discloses an underwater locator beacon for a flight recorder. A switch mechanism of the conventional underwater locator beacon for the flight recorder is changed by additionally arranging a hydrophone and a solid-state relay, so that the underwater locator beacon can only transmit an own positioning signal after receiving sound signals of a certain frequency or certain frequencies on the basis of water immersion; therefore, the problem of small salvage time window of the conventional underwater locator beacon for the flight recorder can be solved; meanwhile, the danger caused by the fact that the underwater locator beacon for the flight recorder is accidentally triggered in the normal use process of an airplane and a battery of the underwater locator beacon is used up before an air crash is also reduced.

Description

technical field [0001] The invention belongs to the field of aviation industry, and in particular relates to an underwater positioning transmitter for a flight recorder. Background technique [0002] Flight Recorder (Flight Recorder), commonly known as "black box", is an indispensable safety device for modern civil aircraft. It consists of two parts, the Flight Data Recorder and the Cockpit Voice Recorder, both housed in the same metal case designed to protect them. During the flight, the two have been recording the operating status parameters of various components of the aircraft and the voice of the pilot in the cockpit. If the plane crashes, the information recorded by the flight recorder can assist the accident investigation and help people find out the cause of the accident. Once the cause of the accident is found, people can improve the future aircraft design, maintenance, management and operation procedures to avoid similar accidents from happening again. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/524
CPCG01S7/524
Inventor 高沿董亮
Owner 高沿
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