EP-4385903-B1 - WIRELESS DEADMAN SWITCH FOR AIRCRAFT FUELING VEHICLE

Inventors

• RIKIMARU KIYOMI
• MURASE TAKAHISA
• YANO NATSUKO

Dates

Publication Date

20260506

Application Date

20210810

Claims (3)

1. A wireless deadman device (1) for operating a refueling device arranged in an aircraft fueling vehicle for refueling aviation fuel to an aircraft(200), the wireless deadman device comprising a transmitter (10) and a receiver (20) which are connected to each other so as to enable wireless communication, to operate the refueling device (101) for refueling aviation fuel to the aircraft (200), the transmitter comprising: a lever handle (15) to transmit a refueling signal to the receiver (20) when a worker grasps with a predetermined pressure; a mode change button (12) capable of changing refueling amount step by step by the worker; an emergency stop button (11) of refueling; a rechargeable battery (B); and various LEDs to display communication state with the receiver, battery level, refueling amount changed by the mode change button; the receiver comprising: a transmitter charging holder capable of integrally arranging the transmitter and the receiver and charging the battery of the transmitter; a pairing switch to set pairing with the transmitter; and various LEDs (22,23,24)to display charging state of the battery of the transmitter, pairing state with thetransm itter, arranging state of the transmitter; wherein the receiver is configured to operate the refueling device so that the aviation fuel is refueled to the aircraft with the refueling amount set by the mode change button while the receiver receives the refueling signal from the transmitter.
2. The wireless deadman device according to claim 1, wherein the receiver has timer function to monitor a continuous reception time of the refueling signal received from the transmitter, wherein the timer function sends a warning and notifies the warning to the worker when it is detected that the continuous reception time of the refueling signal received from the transmitter elapses a first predetermined time, wherein the timer function cancels transmission of the warning when it is detected that the refueling signal received from the transmitter is cancelled for a predetermined time while the warning is notified, and wherein the timer function stops the operation of the refueling device even if the refueling signal from the transmitter is received when it is not detected that the refueling signal received from the transmitter is cancelled for the predetermined time while the warning is notified and it is detected that the continuous reception time of the refueling signal received from the transmitter elapses a second predetermined time.
3. The wireless deadman device according to claim 1 or claim 2, wherein a surface of the transmitter charging holder of the receiver is formed in a same shape as a bottom shape of the transmitter, and wherein the transmitter can be set on the transmitter charging holder in a stand state due to magnetic force of magnets respectively embedded in the bottom surface of the transmitter and the surface of the transmitter charging holder.

Description

Technical Field The present invention relates to a wireless deadman device for aircraft refueling vehicle, and for more information, the present invention relates to a wireless deadman device installed on an aircraft refueling vehicle which a workman can operate while controlling a fuel supply amount when aviation fuel is supplied to an aircraft. Background Art Conventionally, an aircraft refueling vehicle (refueler type) having a fuel tank storing aviation fuel and supplying the aviation fuel to an air craft. Further, in an airport where the aviation fuel is stored in the fuel tank arranged in underground of the airport, the aviation fuel can be supplied to the aircraft from the fuel tank of underground through a fuel filler arranged above ground. Therefore, in the airport where the aviation fuel is stored in the fuel tank of underground, hoses and pressure equipment to supply aviation fuel to the aircraft are provided and the aircraft refueling vehicle (hydrant type refueling vehicle and called as servicer) is used. As mentioned in the above, as a remote control device used in the fueling vehicle to supply aviation fuel to the aircraft, it is proposed a refueling vehicle having a wired deadman switch which the worker operates ON/OFF of refueling of the aviation fuel (for example, Japanese application No.2000-318508). Further, US 6 186 196 B1 discloses a hand-held wireless control apparatus for a deadman device for refueling. This apparatus comprises a base station with a remote unit for a refueling vehicle. The remote unit has a main control trigger and a shutdowm button. DE 20 2007 008748 U1 discloses a refueling device with a transmitter-receiver unit for carrying out wireless communication. Summary of Invention Technical Problem Conventionally, there are few cases that the aviation fuel is filled up in the fuel tank of the aircraft when the aviation fuel is supplied to the aircraft. Generally, supply amount of the aviation fuel is determined by adding up amount of the aviation fuel necessary to fly to the next destination and amount of the aviation fuel necessary during emergency response, such determined supply amount of the aviation fuel is supplied to the fuel tank of the aircraft. Thus, the worker confirms the supply amount supplied to the aircraft while confirming fuel gauge of the fuel tank. However, since the deadman switch as the remote control device described in the Patent Literature 1 is wired, the worker has to pay attention for handling of wired cables when the worker moves to a position where the fuel gauge arranged near the fuel tank of the aircraft can be made visible. Further, the deadman switch as the remote control device described in the Patent Literature 1 is to merely operate ON/OFF of refueling and such deadman switch has no function to change flow rate per unit time of the aviation fuel (hereinafter, called as supply amount) refueled to the fuel tank of the aircraft from the aircraft fueling vehicle through the refueling hose. The present invention is accomplished to solve the above technical problem and has a purpose to provide a wireless deadman switch installed in the aircraft refueling vehicle through which the worker can operate refueling amount when the aviation fuel is refueled to the aircraft. Solution to Problem In order to achieve the above purpose, the present invention is a wireless deadman device in which a transmitter and a receiver are connected so as to enable wireless communication, to refuel aviation fuel to an aircraft by operating a refueling device arranged in an aircraft refueling vehicle, wherein the transmitter has a lever handle to transmit a refueling signal to the receiver when a worker grasps with a predetermined pressure, a mode change button capable of changing refueling amount step by step by the worker, an emergency stop button of refueling, a rechargeable battery, various LEDs to display communication state with the receiver, battery level, refueling amount changed by the mode change button,wherein the receiver has a transmitter charging holder capable of integrally arranging the transmitter and the receiver and charging the battery of the transmitter, a pairing switch to set pairing with the transmitter, various LEDs to display charging state of the battery of the transmitter, pairing state with the transmitter, arranging state of the transmitter, andwherein the aviation fuel is refueled to the aircraft by operating the refueling device with the refueling amount set by the mode change button while the receiver receives the refueling signal from the transmitter. Further, the receiver has timer function to monitor a continuous reception time of the refueling signal received from the transmitter, wherein the timer function sends a warning and notifies the warning to the worker when it is detected that the continuous reception time of the refueling signal received from the transmitter elapses a first predetermined time,wherein the timer function can