KR101775832B1 - Submersion sensor with BIT device for aircraft - Google Patents

Submersion sensor with BIT device for aircraft Download PDF

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Publication number
KR101775832B1
KR101775832B1 KR1020160074089A KR20160074089A KR101775832B1 KR 101775832 B1 KR101775832 B1 KR 101775832B1 KR 1020160074089 A KR1020160074089 A KR 1020160074089A KR 20160074089 A KR20160074089 A KR 20160074089A KR 101775832 B1 KR101775832 B1 KR 101775832B1
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South Korea
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sensor
bit
aircraft
fdr
ambient temperature
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KR1020160074089A
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Korean (ko)
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이계광
이영준
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이계광
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D45/00—Aircraft indicators or protectors not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D1/00—Dropping, ejecting, releasing, or receiving articles, liquids, or the like, in flight
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/40—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect
    • G01R13/401—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect for continuous analogue, or simulated analogue, display
    • G01R13/402—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect for continuous analogue, or simulated analogue, display using active, i.e. light-emitting display devices, e.g. electroluminescent display
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/008—Testing of electric installations on transport means on air- or spacecraft, railway rolling stock or sea-going vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D45/00—Aircraft indicators or protectors not otherwise provided for
    • B64D2045/0065—Black boxes, devices automatically broadcasting distress signals
    • B64D2700/62184—
    • B64D2700/62289—

Abstract

The present invention relates to a submersion sensor with a BIT means installed thereon for an aircraft. The submersion sensor senses submersion when an aircraft crashes into a river, lake and sea, turns off the power to a flight data recorder (FDR), thereby preventing accident records and major flight records of the aircraft stored in the FDR from being deleted. In the submersion sensor, the BIT means comprising a BIT LED (20), a BIT indicator, with a BIT switch (10) is embedded to sense whether the submersion sensor properly operates. The submersion sensor senses submersion when the aircraft, in particular, a helicopter crashes into the river, lake, and sea, turns off the power to the FDR to prevent the accident records and major flight records of the aircraft stored in the FDR from being deleted, and the BIT means is embedded in the submersion sensor, such that an operator can recognize whether the submersion sensor properly operates, thereby enabling the operator to sense a failed or malfunctioning sensor in advance, and subsequently, preventing the risk of accidents in advance, and thus, reliability of the submersion sensor is remarkably enhanced.

Description

BIT 수단이 설치되는 항공기용 침수감지기{Submersion sensor with BIT device for aircraft}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a submersion sensor for an aircraft,

본 발명은 항공기, 특히 헬기에 장착하는 BIT indicator인 BIT LED 및 BIT스위치가 내장되어있는 BIT 수단이 설치되는 항공기용 침수감지기에 관한 것으로, 보다 상세하게는 헬기가 강, 호수, 바다에 추락할 경우 침수감지기에 의해 침수를 감지하여 비행기록장치(FDR)의 전원을 차단 FDR에 기 저장된 항공기 사고기록 및 주요 비행기록 삭제방지를 하기 위한 BIT indicator인 BIT LED 및 BIT스위치가 내장되어 있는 BIT 수단이 설치되는 항공기용 침수감지기에 관한 것이다.More particularly, the present invention relates to an immersion detector for an aircraft, in which a BIT indicator, which is a BIT indicator and a BIT switch, is installed, and more particularly, Detect flooding by inundation detector and turn off the power of FDR. BIT indicator which is the BIT indicator which is the BIT indicator to prevent the accident record of the aircraft stored in FDR and to prevent the deletion of the main flight record is installed. To a flooded water detector for an aircraft.

항공기 등 주요장비에는 침수감지기가 설치되어 사고로 인하여 침수치에 비행기록장치(FDR)의 전원을 차단한다. Major equipment such as airplanes is equipped with a flood detector to shut off the FDR from the attack value due to an accident.

일례로서 종래기술인 공개특허공보 공개번호 특1990-0012105호에는 지면 또는 지하에 매설된 통신 케이블(3)의 적정 위치에 침수감지기(4)을 설치하고 접지(earth)와 연결된 다이오드(D1)에 저항(R1)을 거쳐 침수 감지기(4)에 내장된 침수 감지봉(1)에 접속함과 동시에 콘덴서(C1)와 저항(R2)을 통하여 트랜지스터(Q1)의 콜렉터에 연결하고 저항(R3)측에는 트랜지스터(Q3)베이스에 접속하는 한편 침수 감지봉(1′)에는 저항 (R4)을 거쳐 트랜지스터(Q1)의 베이스에 연결하며 상기 트랜지스터(Q1) 콜렉터단은 저항(R2)(R6)과 트랜지스터(Q2) 베이스에 접속되도록 하고 에미터측에는 저항(R5)을 연결하며 또한 트랜지스터 (Q2)의 콜렉터에는 저항(R3)트랜지스터(Q3)의 베이스에 접속하는 한편 상기 트랜지스터(Q3) 콜렉터측　 다이오드(D1)사이에 콘덴서(C2)와 다이오드(D2) 그리고 계전기(2)를 각각 병렬로 연결하되 트랜지스터 (Q3)의 에미터단에는 저항(R3)을 접속하며 각 저항(R4-R8)과 콘덴서(C1)는 전화국의 사용 전압인 -48V에 연결한 것을 특징으로 하는 무인 전화국의 통신 케이블 침수 감지장치가 공개되어 있다.For example, in the prior art Patent Publication No. 1990-0012105, a water immersion sensor 4 is installed at a proper position of a communication cable 3 buried in a ground or underground, and a diode D1 connected to a ground Is connected to the immersion sensing rod 1 built in the immersion sensor 4 through the resistor R1 and to the collector of the transistor Q1 through the capacitor C1 and the resistor R2, The base of the transistor Q1 is connected to the base of the transistor Q1 through a resistor R4 and a collector terminal of the transistor Q1 is connected to the base of the transistor Q2 ) Base, a resistor R5 is connected to the emitter side, and the collector of the transistor Q2 is connected to the base of the resistor R3 transistor Q3, while the collector of the transistor Q3 is connected to the base of the resistor R3 transistor Q3. A capacitor C2 and a diode D2, The resistor R3 is connected to the emitter terminal of the transistor Q3 and the resistors R4 to R8 and the capacitor C1 are connected to the operating voltage of -48 V, A communication cable flooding detection device of an unmanned telephone office is disclosed.

등록실용신안공보 등록번호 20-0476103호에는 선박의 기관실(20)에 설치되어 침수 여부를 파악하는 침수 감지부(30)와, 상기 침수 감지부(30)에 전원공급 및 침수 감지부(30)에서 전달된 신호에 따라 경보를 발생하는 전원공급부(70)와 경보발생부(80)가 구비된 선박 기관실의 침수 경보장치(100)에 있어서, 상기 침수 감지부(30)는 전후 방향에 일정 길이의 체결 장공(33,34,35,36)이 각각 형성되어 좌우 양측으로 분리 구성된 한 쌍의 고정부재(31,32); 상기 한 쌍의 고정부재(31,32)에 형성된 체결 장공(33,34,35,36)에 대응하도록 전후 방향에 한 쌍의 체결 장공(42,43,44,45)이 좌우 대칭되게 각각 형성되고, 중앙부에는 관통공(46)이 형성되어 상기 한 쌍의 고정부재(31,32) 저면에서 양쪽 체결 장공(33,34,35,36)(42,43,44,45)에 각각 결합되는 체결수단(48)에 의해 상기 한쌍의 고정부재(31,32) 저면에 결합되는 연결부재(40); 상기 연결부재(40)의 중앙부에 형성된 관통공(46)에 끼움 설치되어 연결부재(40)의 상하 방향으로 관통 설치되어 높이 조절이 가능하도록 구성된 높이조절지지대(50); 상기 기관실(20) 바닥의 침수상태를 감지하도록 상기 높이조절지지대(50)의 하단에서 고정되어 상하 유동가능하도록 설치되는 부력체(60); 상기 부력체(60)의 상하 유동시 전기적 접촉이 이루어져 상기 경보발생부(80)에 전기적인 신호를 전달하여 경보신호를 발생하도록 상기 부력체(60)의 상단부에 연결 설치되는 접촉스위치(66); 를 포함하여 구성되는 것을 특징으로 하는 선박 기관실의 침수 경보장치가 공개되어 있다.Registration No. 20-0476103 discloses a flooding detection unit 30 installed in an engine room 20 of a ship to detect whether the flooded water is flooded or not, a power supply and flooding detection unit 30 for the flooded detection unit 30, The flooded alarm unit 100 of the ship engine room includes a power supply unit 70 and an alarm generator 80 for generating an alarm in response to a signal transmitted from the flood detection unit 30, A pair of fastening members 31, 32 each formed with fastening elongated holes 33, 34, 35, 36 and separated from each other on both right and left sides; A pair of fastening slots 42, 43, 44 and 45 are formed symmetrically in the front-rear direction so as to correspond to fastening slots 33, 34, 35 and 36 formed in the pair of fastening members 31 and 32, respectively And a through hole 46 is formed in a center portion thereof so as to be coupled to both fastening slots 33, 34, 35, 36, 42, 43, 44, 45 at the bottom of the pair of fastening members 31, A connecting member (40) coupled to a bottom surface of the pair of fixing members (31, 32) by a fastening means (48); A height adjustment support 50 fitted to the through hole 46 formed at a central portion of the connection member 40 so as to penetrate the connection member 40 in a vertical direction and adjustable in height; A buoyant body (60) fixed at the lower end of the height adjusting support (50) to detect the flooded state of the bottom of the engine room (20) and installed to be vertically movable; A contact switch 66 connected to the upper end of the buoyant body 60 to generate an alarm signal by transmitting an electrical signal to the alarm generating unit 80 through electrical contact when the buoyant body 60 moves up and down, ; A flooded alarm device for a ship engine room is disclosed.

그러나 상기 종래기술들은 침수감지기가 평소 정상적으로 작동되는지 확인하기가 어렵다. 곧 BIT(Built in Test)indicator 등이 내장되어 있지 않아서 확인을 하기위해서는 별도의 점검 장치가 필요하다는 단점이 있었다.However, it is difficult to confirm whether the flood detector is normally operated normally. Since there is no built-in BIT (Built-in-Test) indicator, there is a disadvantage in that a separate checking device is required to check.

따라서 본 발명은 상기와 같은 문제점을 해결하고자 안출된 것으로, 항공기, 특히 헬기가 강, 호수, 바다에 추락할 경우 침수감지기에 의해 침수를 감지하고 비행기록장치(FDR)의 전원을 차단하여, FDR에 기 저장된 항공기 사고기록 및 주요 비행기록 삭제를 방지를 하며, 상기 침수감지기에는 BIT 스위치 및 BIT indicator인 BIT LED로 구성되는 BIT 수단이 내장되어 침수감지기가 평소 정상적으로 작동되는지를 알 수 있어서 기기의 고장 내지 오작동을 사전 감지하여 사고위험을 미연에 방지하며 침수감지장치의 신뢰도를 향상시키는 BIT indicator인 BIT LED와 BIT 스위치가 내장되어 있는 BIT 수단이 설치되는 항공기용 침수감지기를 제공하고자 하는 것이다.SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and it is therefore an object of the present invention to provide a FDR sensor capable of detecting flooding by an inundation sensor when an aircraft, especially a helicopter, And the BIT switch including the BIT switch and the BIT LED as the BIT indicator is built in. Thus, it is possible to know whether the flood detector is normally operated or not, The present invention is to provide an immersion detector for an aircraft in which a BIT indicator, which is a BIT indicator that improves the reliability of a flooded sensing device, and a BIT device that incorporates a BIT switch are installed.

본 발명은 BIT indicator인 BIT LED 및 BIT 스위치가 내장되어 있는 BIT 수단이 설치되는 항공기용 침수감지기에 관한 것으로, 항공기가 강, 호수, 바다에 추락할 경우 침수감지기에 의해 침수를 감지하고, 비행기록장치(FDR)의 전원을 차단하여, FDR에 기 저장된 항공기 사고기록 및 주요 비행기록 삭제방지를 하는 것으로, 상기 침수감지기에는 BIT(Built in Test) 스위치와 BIT indicator인 BIT LED로 구성되는 BIT 수단이 내장되어 침수감지기가 정상적으로 작동되는지를 알 수 있는 것을 특징으로 한다.The present invention relates to an immersion detector for an aircraft in which a BIT means having a BIT indicator and a BIT switch are installed. The immersion sensor detects an immersion signal by a flood sensor when an aircraft falls on a river, a lake or the sea, (FDR) is turned off to prevent the accident record of the aircraft stored in the FDR and the deletion of the main flight record. The flood detector includes a BIT means including a BIT (Built in Test) switch and a BIT LED as a BIT indicator And the built-in flood detector is normally operated.

항공기, 특히 헬기가 강, 호수, 바다에 추락할 경우 침수감지기에 의해 침수를 감지하고 비행기록장치(FDR)의 전원을 차단하여, FDR에 기 저장된 항공기 사고기록 및 주요 비행기록 삭제를 방지를 하며, 상기 침수감지기에는 BIT 수단이 내장되어 침수감지기가 평소 정상적으로 작동되는지를 알 수 있어서 기기의 고장 내지 오작동을 사전 감지하여 사고위험을 미연에 방지하며 침수감지장치의 신뢰도를 향상시키는 현저한 효과가 있다.When an aircraft, especially a helicopter, crashes into a river, lake or sea, it detects flooding by a flood detector and powers off the flight recorder (FDR), preventing the accident record of the aircraft stored in the FDR and deleting the main flight record And the BIT unit is built in the flood detector, so that it is possible to know whether the flood detector is normally operated so that the fault or malfunction of the device can be detected in advance, thereby preventing an accident risk and improving the reliability of the flood detection apparatus.

도 1은 종래 침수감지기 외관도
도 2는 본 발명 항공기용 침수감지기 외관도
도 3은 본발명 BIT 수단이 설치되는 항공기용 침수감지기 동작설명도Fig. 1 is a view showing the appearance of a conventional flooded-
Fig. 2 is a perspective view of an immersion detector for an aircraft according to the present invention
3 is an explanatory view of operation of a water immersion detector for an aircraft in which the BIT unit of the present invention is installed

본발명은 BIT 수단이 설치되는 항공기용 침수감지기에 관한 것으로, 항공기가 강, 호수, 바다에 추락할 경우 침수감지기에 의해 침수를 감지하고, 비행기록장치(FDR)의 전원을 차단하여, FDR에 기 저장된 항공기 사고기록 및 주요 비행기록 삭제방지를 하는 것으로, 상기 침수감지기에는 BIT(Built in Test) 스위치(10)와 BIT indicator인 BIT LED(20)로 구성되는 BIT 수단(100)이 내장되어 침수감지기가 정상적으로 작동되는지를 알 수 있는 것을 특징으로 한다.The present invention relates to an immersion sensor for an aircraft in which a BIT unit is installed. When an aircraft falls into a river, a lake or the sea, the immersion sensor senses immersion by the immersion sensor and cuts off the power of the FDR, The BIT unit 100, which is comprised of a BIT (Built in Test) switch 10 and a BIT LED 20 as a BIT indicator, is embedded in the immersion sensor, It is possible to know whether the detector is normally operated.

또한, 상기 BIT 수단은 모든 값이 정상일 경우에는 BIT SW 동작시 BIT indicator인 BIT LED가 점등되어 있으며, 비정상일 경우에는 BIT indicator인 BIT LED가 미점등되는 것을 특징으로 한다.When all the values are normal, the BIT indicator is turned on during a BIT SW operation. When the BIT indicator is abnormal, a BIT indicator, which is a BIT indicator, is turned off.

본발명을 첨부도면에 의해 상세히 설명하면 다음과 같다. 도 1은 종래 침수감지기 외관도, 도 2는 본 발명 항공기용 침수감지기 외관도, 도 3은 본발명 BIT 수단 설치되는 항공기용 침수감지기 동작설명도이다.The present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an external view of a conventional flooded detector, FIG. 2 is an external view of a flooded detector for an aircraft of the present invention, and FIG. 3 is an explanatory view of the operation of a flooded detector for an aircraft provided with the invented BIT.

항공기 체계에서 생성된 28V 전원은 조종실 좌측 회로차단기 패널의 DC-DIRECT BATTERY BUS1을 경유하여 충격(Inertia SW)감지 스위치와 침수감지제어장치(Electrical Immersion Bos)로 공급되고 제어장치 동작을 위한 별도 전원도 공급된다. 침수감지기 (Immersion Probe)는 항공기가 강이나 바닥에 추락하였을 때 FDR(비행기록장치)의 전원을 차단하여, FDR에 저장된 항공기사고 기록 및 비행기록의 삭제를 방지하는 역할이다.The 28V power generated by the aircraft system is supplied to the Inertia SW detection switch and the Electrical Immersion Bos via the DC-DIRECT BATTERY BUS1 on the left circuit breaker panel of the cockpit. . Immersion probes are used to shut down the FDR when an aircraft crashes into a river or floor, preventing the accident record and flight records stored in the FDR from being deleted.

본발명에 사용되는 침수감지기는 히팅센서와 주변온도 감지센서의 두 개다. 본발명 침수감지기의 센서인 히팅센서와 주변온도 감지센서는 각각 RTD(RTD : Resistance Temperature detector)센서로 만들어진다. 상기 RTD센서는 PT100을 사용하며, 0도에서 100옴의 특성을 갖는다.The immersion sensor used in the present invention is two of a heating sensor and an ambient temperature sensor. The heating sensor and the ambient temperature sensor, which are the sensors of the immersion sensor of the present invention, are each made of a resistance temperature detector (RTD) sensor. The RTD sensor uses PT100 and has a characteristic of 0 to 100 ohms.

그리고 본발명의 히팅센서는 항상 전류를 공급하여 히팅을 하며 약 52℃ 정도로 가열하며, 주변온도 감지센서는 히팅을 하지 않고 주변온도를 감지한다.In addition, the heating sensor of the present invention always supplies electric current to heat it to about 52 ° C, and the ambient temperature sensor senses the ambient temperature without heating.

항공기 조건에서는 주변온도와 상관없이 침수를 감지할 수 있어야 하므로 주변온도와 상관없이 동작하기 위해서는 히팅센서와 주변온도 감지센서에 온도차가 있도록 구성된다. In aircraft conditions, flooding should be able to be detected irrespective of the surrounding temperature. Therefore, in order to operate regardless of the ambient temperature, a temperature difference is generated between the heating sensor and the ambient temperature sensor.

침수가 되면 상기 히팅센서는 온도가 저하되므로, 히팅센서와 주변온도 감지센서간의 온도차가 설정치 이하가 되면 침수가 발생한 것으로 제어부에서 판단하여, 비행기록장치(FDR)의 전원을 차단하여, FDR에 기 저장된 항공기 사고기록 및 주요 비행기록 삭제방지를 한다.When the temperature difference between the heating sensor and the ambient temperature sensor becomes lower than the set value, the control unit determines that the flooding has occurred and cuts off the power of the FDR, Preventing stored aircraft accident records and key flight records.

본발명의 회로도에 의하면 히팅센서에 전류를 공급하여 각 센서의 저항값은 전류를 흘려 전압으로 바뀐다. 이때의 전압을 opamp 및 비교기에서 비교하여 침수의 여부를 판단한다.According to the circuit diagram of the present invention, current is supplied to the heating sensor, and the resistance value of each sensor is changed to a voltage by flowing a current. The voltage at this time is compared in the opamp and the comparator to judge whether or not it is flooded.

곧, 12V전원회로와 3V전원회로는 침수감지회로의 전원공급을 담당한다.Soon, the 12V power circuit and the 3V power circuit are responsible for powering the flood sensing circuit.

침수감지회로의 출력은 정상상태에서는 항상 내부의 릴레이가 Inertia 입력이 FDR 출력으로 연결되며, 침수감지시에는 차단된다.The output of the flood detection circuit is always connected to the internal relay at the normal state, to the FDR output at the input of the inertia, and to the flood detection circuit.

그리고 본발명에서 헬기가 침수되면 A 구멍(hole)으로 물이 유입되며, B 구멍(hole)의 역할은 내부의 공기(AIR)를 빼는 역할이다.In the present invention, when the helicopter is submerged, water flows into the A hole, and the role of the B hole is to pull out the internal air (AIR).

B 구멍(hole)은 180도 간격을 2개소 설치하며, A 구멍(hole)은 90도 간격으로 4개소 설치한다.B holes should be installed at two places with 180 degree intervals, and A holes should be installed at four places at 90 degree intervals.

본발명은 침수감지기에는 BIT(Built in Test) 스위치와 BIT indicator인 BIT LED로 구성되는 BIT 수단이 내장되어 침수감지기가 평소 정상적으로 작동되는지를 알 수 있는 것이다.The present invention is characterized in that a flood detector includes a BIT means including a BIT (Built in Test) switch and a BIT LED as a BIT indicator, so that the flood detector can be normally operated.

본발명은 각 op amp의 아날로그회로의 전압값은 비교기를 통하여 판단되며, 이때의 모든 값을 Logic회로 AND로 구성하여 모든 값이 정상일 경우에는 BIT SW 동작시 BIT LED가 점등되며, 비정상일 경우에는 BIT LED가 미점등된다.In the present invention, the voltage value of the analog circuit of each op amp is judged through the comparator, and all the values at this time are constituted by the logic circuit AND. When all the values are normal, the BIT LED is turned on during the BIT SW operation. The BIT LED lights up.

따라서 본발명은 항공기, 특히 헬기가 강, 호수, 바다에 추락할 경우 침수감지기에 의해 침수를 감지하고 비행기록장치(FDR)의 전원을 차단하여, FDR에 기 저장된 항공기 사고기록 및 주요 비행기록 삭제를 방지를 하며, 상기 침수감지기에는 BIT 수단이 내장되어 침수감지기가 평소 정상적으로 작동되는지를 알 수 있어서 기기의 고장 내지 오작동을 사전 감지하여 사고위험을 미연에 방지하며 침수감지장치의 신뢰도를 향상시키는 현저한 효과가 있다.Accordingly, the present invention detects flooding by an inundation detector when the aircraft, particularly a helicopter, falls into a river, lake, or sea and cuts off the power of the FDR, And the BIT unit is built in the flood detector to know whether the flood detector is normally operated so that the fault or malfunction of the device can be detected in advance to prevent the accident risk and to improve the reliability of the flood detection apparatus. It is effective.

10 : BIT 스위치
20 : BIT LED
100 : BIT 수단10: BIT switch
20: BIT LED
100: BIT means

Claims (2)

항공기가 강, 호수, 바다에 추락할 경우 침수감지기에 의해 침수를 감지하고, 비행기록장치(FDR)의 전원을 차단하여, FDR에 기 저장된 항공기 사고기록 및 주요 비행기록 삭제방지를 하는 것으로, 상기 침수감지기에는 BIT(Built in Test) 스위치(10)와 BIT indicator인 BIT LED(20)로 구성되는 BIT 수단(100)이 내장되어 침수감지기가 정상적으로 작동되는지를 알 수 있는 BIT 수단이 설치되는 항공기용 침수감지기에 있어서,
상기 항공기에서 생성되는 28V 전원은 조종실 좌측 회로차단기 패널의 DC-DIRECT BATTERY BUS1을 경유하여 충격(Inertia SW)감지 스위치와 침수감지제어장치(Electrical Immersion Bos)로 공급되고 제어장치 동작을 위한 별도 전원도 공급되며, 상기 침수감지기 (Immersion Probe)는 항공기가 강이나 바닥에 추락하였을 때 FDR(비행기록장치)의 전원을 차단하여, FDR에 저장된 항공기사고 기록 및 비행기록의 삭제를 방지하는 역할이며,
침수감지기는 히팅센서와 주변온도 감지센서의 두 개로서, 침수감지기의 센서인 히팅센서와 주변온도 감지센서는 각각 RTD(RTD : Resistance Temperature detector)센서로 만들어지며,
상기 히팅센서는 항상 전류를 공급하여 히팅을 하며 일정 온도 이상으로 가열하며, 주변온도 감지센서는 히팅을 하지 않고 주변온도를 감지하는 것이며,
항공기 조건에서는 주변온도와 상관없이 침수를 감지할 수 있어야 하므로 주변온도와 상관없이 동작하기 위해서는 히팅센서와 주변온도 감지센서에 온도차가 있도록 구성되며,
침수가 되면 상기 히팅센서는 온도가 저하되므로, 히팅센서와 주변온도 감지센서간의 온도차가 설정치 이하가 되면 침수가 발생한 것으로 제어부에서 판단하여, 비행기록장치(FDR)의 전원을 차단하여, FDR에 기 저장된 항공기 사고기록 및 주요 비행기록 삭제방지를 하게 되는 것으로,
상기 히팅센서에 전류를 공급하여 각 센서의 저항값은 전류를 흘려 전압으로 바뀌되 이때의 전압을 opamp 및 비교기에서 비교하여 침수의 여부를 판단하는 것으로,
12V전원회로와 3V전원회로는 침수감지회로의 전원공급을 담당하며,
침수감지회로의 출력은 정상상태에서는 항상 내부의 릴레이가 Inertia 입력이 FDR 출력으로 연결되며, 침수감지시에는 차단되는 것이며, 침수감지기에 형성된 두 개의 구멍(hole) 중 헬기가 침수되면 A 구멍(hole)으로 물이 유입되며, B 구멍(hole)의 역할은 내부의 공기(AIR)를 빼는 역할인 것으로,
상기 BIT 수단(100)은 각 op amp의 아날로그회로의 전압값은 비교기를 통하여 판단되며, 이때의 모든 값을 Logic회로 AND로 구성하여 모든 값이 정상일 경우에는 BIT 스위치(10) 동작시 BIT indicator인 BIT LED(20)가 점등되어 있으며, 비정상일 경우에는 BIT indicator인 BIT LED(20)가 미점등되는 것을 특징으로 하는 BIT 수단이 설치되는 항공기용 침수감지기
When an aircraft crashes into a river, lake, or ocean, it detects flooding by a flood detector, turns off the power of the FDR, prevents accident record of the aircraft stored in the FDR, The immersion detector includes a BIT means 100, which is composed of a BIT (Built in Test) switch 10 and a BIT LED 20 as a BIT indicator, for the aircraft in which the BIT means for knowing whether the immersion sensor is normally operating is installed In the flooded sensor,
The 28V power generated by the aircraft is supplied to the Inertia SW detection switch and the electrical immersion sensor via the DC-DIRECT BATTERY BUS1 on the left circuit breaker panel of the cockpit. And the immersion probe serves to prevent the deleting of the accident record and the flight record stored in the FDR by shutting down the power of the FDR when the aircraft falls to the river or the floor,
The immersion detector is composed of a heating sensor and an ambient temperature sensor. The immersion sensor's heating sensor and the ambient temperature sensor are each made of RTD (Resistance Temperature Detector)
The heating sensor always supplies electric current to heat the heater to a predetermined temperature or more, and the ambient temperature sensor senses the ambient temperature without heating,
In order to operate regardless of the ambient temperature, the temperature difference between the heating sensor and the ambient temperature sensor must be set so that the flooding can be detected regardless of the ambient temperature.
When the temperature difference between the heating sensor and the ambient temperature sensor becomes lower than the set value, the control unit determines that the flooding has occurred and cuts off the power of the FDR, It will prevent deletion of stored aircraft accident records and major flight records,
The resistance value of each sensor is changed to a voltage by supplying a current to the heating sensor, and the voltage at that time is compared in an opamp and a comparator to determine whether or not to flood.
The 12V power circuit and the 3V power circuit are responsible for powering the flood detection circuit,
The output of the flood detection circuit is always connected to the internal relay at the normal state and the input of the inertia is connected to the FDR output. When the flood detection sensor detects that the two helicopters are flooded, ), And the function of the hole B is to remove the air inside (AIR)
In the BIT unit 100, the voltage value of the analog circuit of each op amp is determined through a comparator. All the values at this time are configured by a logic circuit AND. When all values are normal, the BIT indicator 10 The BIT LED 20 is turned on, and when it is abnormal, the BIT LED 20, which is a BIT indicator, is turned off.
삭제delete
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020068941A1 (en) * 2018-09-28 2020-04-02 Rosemount Inc Electronics housing with thermal fluid detection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020068941A1 (en) * 2018-09-28 2020-04-02 Rosemount Inc Electronics housing with thermal fluid detection
JP2022502650A (en) * 2018-09-28 2022-01-11 ローズマウント インコーポレイテッド Electrical device housing with thermal fluid detection
JP7111894B2 (en) 2018-09-28 2022-08-02 ローズマウント インコーポレイテッド Electronics housing with thermal fluid detection

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