WO2002078985A1 - Installation de mesure de la pression d'au moins un pneumatique d'une roue d'un avion - Google Patents
Installation de mesure de la pression d'au moins un pneumatique d'une roue d'un avion Download PDFInfo
- Publication number
- WO2002078985A1 WO2002078985A1 PCT/FR2002/001074 FR0201074W WO02078985A1 WO 2002078985 A1 WO2002078985 A1 WO 2002078985A1 FR 0201074 W FR0201074 W FR 0201074W WO 02078985 A1 WO02078985 A1 WO 02078985A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wheel
- pressure
- antenna
- aircraft
- sensor
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C2200/00—Tyres specially adapted for particular applications
- B60C2200/02—Tyres specially adapted for particular applications for aircrafts
Definitions
- the present invention relates to an installation for measuring the pressure of at least one tire on an aircraft wheel, of the type comprising:
- radio frequency transmission means comprising on the one hand, for the or each sensor, a rotating antenna carried by the wheel and connected to each measurement sensor and, on the other hand, a fixed antenna connected by a cable conductor at the pressure measurement operating unit.
- This pressure sensor addresses the value of the measurement to an operating unit located in the body of the aircraft, and in particular in the cockpit.
- This operating unit is adapted, for example, to make available to the pilot by display on a suitable screen the digital value of the pressure of each tire.
- an antenna carried by the fixed part of the landing gear is disposed on the hub of each wheel opposite a corresponding rotating antenna carried by the mobile part of the wheel.
- the fixed antenna carried by the hub is connected to the values processing unit located in the cockpit by an information transmission cable.
- the cable travels from the wheel hub along the length of the strut of the landing gear and then inside the fuselage of the aircraft.
- the strut of each element of the landing gear comprises two successive sections connected to one another by a shock absorber.
- the two successive sections being made mobile by the presence of the shock absorber, the passage of the information transmission cable in the region of the shock absorber is delicate.
- the cable is subjected to repeated mechanical stress causing accidental breakage of the transmission cable in this region.
- the object of the invention is to propose an installation for measuring the pressure of the tires of an aircraft which does not have the drawbacks mentioned above and whose reliability is increased.
- the subject of the invention is an installation for measuring the pressure of at least one tire of an airplane wheel of the aforementioned type, characterized in that the fixed antenna is adapted to be carried by the structure of the airplane away from the or each wheel at least in an upper part of the strut of a landing gear element carrying the wheel.
- the installation includes one or more of the following characteristics:
- the strut has two movable sections connected by a shock absorber, and the fixed antenna is carried by the upper part of the strut on the movable section secured to the fuselage of the aircraft;
- the fixed antenna is carried by the fuselage of the aircraft
- radio-frequency transmission means are suitable for radio-frequency transmission of a power signal for the supply of the or each pressure measurement sensor;
- It comprises several sensors associated with several mobile antennas, and the transmission means comprise means for discriminating the signals transmitted from each mobile antenna;
- the transmission frequency is between 100 kHz and 150 kHz.
- the invention further relates to an aircraft comprising a pressure measurement installation as defined above.
- FIG. 1 is a schematic view of an airplane equipped with an installation for measuring the pressure of a tire according to the invention
- FIG. 2 is a schematic view of the pressure measurement installation in two separate tires of the same landing gear of an aircraft.
- FIG. 3 is a schematic view of a landing gear element of an aircraft on which is installed an alternative embodiment of a pressure measurement installation according to the invention.
- the airplane 10 shown in FIG. 1 is equipped with an installation 12 for measuring the pressure of each of the tires of the airplane wheels.
- the aircraft comprises, at the front, a landing gear element 14 comprising several wheels 16 arranged at the free end of a strut 18.
- the aircraft comprises, under each wing, a landing gear element 20 comprising a strut 22 at the end of which are mounted several wheels 24.
- Each strut 18, 22 of the elements 14, 20 of the landing gear comprises two successive sections movable relative to each other and connected together by a shock absorber.
- Each tire fitted to a wheel 16, 24 of the aircraft is associated with a pressure sensor designated by the general reference 26.
- the pressure sensor is for example carried by the rim of the wheel.
- Each pressure sensor 26 is connected to a rotating antenna designated by the general reference 28.
- This antenna 28 is integral with the rim and is rotatably mounted with the wheel relative to the strut of the landing gear element carrying wheel.
- This operating unit 30 comprises, for example, a set of displays enabling the value of the pressure in each tire to be made available to the pilot.
- This operating unit 30 is connected by an information transmission cable 32 to a fixed antenna 34 adapted to receive and transmit information from and to the antennas 28 associated with each sensor 26 disposed on the wheels of the aircraft .
- the fixed antenna 34 is carried by the structure of the aircraft, away from each wheel, at least in the upper part of the strut of each landing gear element supporting a wheel. . More specifically, in the embodiment of Figure 1, the fixed antenna 34 is fixed under the fuselage of the aircraft in the region before it in the vicinity of the cockpit of the aircraft.
- FIG. 2 illustrates the electronic structure of the radio frequency information transmission means allowing communication between each of the pressure sensors and the operating unit 30. These transmission means are designated by the general reference 38.
- Each sensor 26 comprises a transducer 40 adapted to convert the pressure inside the tire into an electrical signal.
- the sensor 26 includes an information processing unit 42 comprising calculation means 44 and encoding and decoding means 46.
- the processing unit 42 is connected to a transceiver unit 48 to which the mobile antenna 28 is connected.
- the transceiver unit 48 includes a demodulation stage 50 adapted to, from the radio frequency signal received by the antenna 28, produce, on the one hand, a data signal 52 addressed to the encoding means and decoding 46 and, on the other hand, a power signal 54 ensuring the supply on the one hand of the information processing unit 42 and of all the stages of the transceiver unit 48.
- the electric power addressed by the demodulation stage 50 comes from the radio frequency signal received.
- This radio frequency signal is thus adapted for power transmission. It has, for example, a frequency between 100 kHz and 150 kHz. This frequency is preferably
- the encoding and decoding means 46 are adapted to interpret a pressure measurement order received from the cockpit through radio-frequency communication. Furthermore, the encoding and decoding means 46 are adapted to code a pressure value produced by the processing means 44 ensuring the reading of the transducer 40. This encoding is carried out in particular in order to add to the pressure value, in the coded message, an identi- relying on sensor 26, so that the pressure measurement value can be associated with a tire.
- the transceiver unit 48 includes a stage 56 for modulating the signal adapted to ensure the transformation of the coded message originating from the encoding and decoding means 46 into a signal suitable for radio-frequency transmission. from the antenna 28.
- the modulation stage 56 is connected for this purpose to the antenna 28 in order to address the modulated signal to the fixed antenna 34.
- the antenna 34 is connected, like each antenna 28, to a transceiver unit 60.
- the latter is connected to an information processing unit 62, itself connected to the operating unit, of the values 30.
- This operating unit is constituted for example by a display.
- the transmitting and receiving unit 60, the information processing unit 62 and the operating unit 30 are all supplied from an electrical energy source 64. This supply is effected for example by the through the aircraft's own power distribution network.
- the transceiver unit 60 comprises a demodulation stage 66 making it possible to receive the modulated signal coming from the antenna 34 and to form therefrom a digital baseband signal usable by the processing unit information 62.
- the communication unit 60 includes a modulation stage 68 suitable for shaping a signal from the information processing means 62.
- this modulation stage 68 is suitable for combining, in a modulated signal, the data from the information processing unit 62 and a power signal allowing the supply of the measurement sensors associated with the tires.
- the information processing unit 62 includes encoding and decoding means 70 making it possible to identify in the signal coming from the demodulation means 66, the origin of the pressure values as a function of the coding ensured by the pressure sensor having sent the information.
- the encoding and decoding means 70 ensure coding of the pressure requests addressed to the modulation module 68 so that the request can be recognized by only one of the sensors.
- the information processing unit 62 furthermore comprises processing means 72 allowing the shaping of the pressure measurement values received for their subsequent processing by the operating means 30. In order to collect a pressure measurement, the the information processing unit 62 generates a request with coding adapted to the sensor of the tire whose pressure must be read. This coded signal is modulated by the modulation stage 68.
- Each of the sensors 26 receives the signal transmitted from the antenna 34.
- the demodulation stage 50 of each sensor 26 provides demodulation of the signal which is then sent to the information processing unit 42 and in particular to the means of encoding and decoding 46. If the received request includes a code recognized by the processing unit 42, the pressure measurement value returned by the transducer is shaped by the processing means 42 and encoded by the unit 46 before to be modulated by stage 56 with a view to its transmission. After which, the signal thus modulated is transmitted from the antenna 28 to the antenna 34.
- the processing means 72 the pressure value is made available to the pilots of the aircraft by display on the operating means 30 of the pressure measurement value.
- FIG. 3 illustrates an alternative embodiment of the installation according to the invention.
- the fixed antenna denoted 134 analogous to the fixed antenna 34, is arranged on the upper part of the strut 122 of the landing gear element. In particular, it is carried by the section 122A secured to the fuselage of the aircraft.
- each tire is associated with a pressure sensor 26 connected to a mobile antenna 28.
- a radio-frequency transmission is established between the rotating antenna 28 of each wheel and the fixed antenna 134. This radio-frequency transmission ensures both data transmission and transmission of energy to supply the sensors.
- the strut 122 comprises two successive sections 122A, 122B connected by a damping element 122C.
- the movable and fixed antennas 28 and 34 or 134 are arranged apart from one another, and in particular on either side of the element of landing gear shock absorber. Thus, it is understood that no wire is routed along the length of the damper thus reducing the risk of cable breakage.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Fluid Pressure (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0325283A GB2391633B (en) | 2001-03-29 | 2002-03-27 | Installation for measuring pressure of at least one aeroplane wheel tyre |
US10/473,808 US6959596B2 (en) | 2001-03-29 | 2002-03-27 | Installation for measuring pressure of at least one aeroplane wheel tire |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0104292A FR2822755B1 (fr) | 2001-03-29 | 2001-03-29 | Installation de mesure de la pression d'au moins un pneumatique d'une roue d'un avion |
FR0104292 | 2001-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002078985A1 true WO2002078985A1 (fr) | 2002-10-10 |
Family
ID=8861719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/001074 WO2002078985A1 (fr) | 2001-03-29 | 2002-03-27 | Installation de mesure de la pression d'au moins un pneumatique d'une roue d'un avion |
Country Status (4)
Country | Link |
---|---|
US (1) | US6959596B2 (fr) |
FR (1) | FR2822755B1 (fr) |
GB (1) | GB2391633B (fr) |
WO (1) | WO2002078985A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2930037A1 (fr) * | 2014-04-07 | 2015-10-14 | Goodrich Corporation | Système et appareil de détection de la pression d'un pneu de roue avant |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7468655B2 (en) * | 2006-08-25 | 2008-12-23 | The Goodyear Tire & Rubber Company | Aircraft tire condition monitoring system and method |
ES2541318T3 (es) * | 2008-03-21 | 2015-07-17 | Eldec Corporation | Enlace de bucle de presión de neumático de avión |
US10773797B2 (en) * | 2014-12-04 | 2020-09-15 | Borealis Technical Limited | Method for using aircraft wheel tyre pressure to improve aircraft energy efficiency and drive system performance |
FR3098762B1 (fr) | 2019-07-19 | 2021-10-15 | Safran Landing Systems | Système de vérification de la pression de gonflage de pneumatiques d’aéronef |
FR3099723B1 (fr) | 2019-08-05 | 2021-11-12 | Safran Landing Systems | Procédé de gestion d’énergie d’un système de vérification de la pression de gonflage des pneumatiques d’un aéronef |
US11110758B1 (en) | 2020-10-19 | 2021-09-07 | Safran Landing Systems | System for monitoring the inflation pressure of the tires of an aircraft |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4695823A (en) * | 1984-04-27 | 1987-09-22 | Vernon Roger W | Vehicle tire monitoring apparatus |
EP0301127A1 (fr) * | 1987-07-31 | 1989-02-01 | Texas Instruments Deutschland Gmbh | Disposition de répondeur |
US5600301A (en) * | 1993-03-11 | 1997-02-04 | Schrader Automotive Inc. | Remote tire pressure monitoring system employing coded tire identification and radio frequency transmission, and enabling recalibration upon tire rotation or replacement |
US5853020A (en) * | 1995-06-23 | 1998-12-29 | Widner; Ronald D. | Miniature combination valve and pressure transducer and system |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2212245B1 (fr) * | 1972-12-30 | 1976-11-19 | Toyo Tire & Rubber Co | |
US4048614A (en) * | 1975-08-18 | 1977-09-13 | Shumway Harry J | Low tire pressure warning device |
US4630470A (en) * | 1984-11-16 | 1986-12-23 | The United States Of America As Represented By The Secretary Of The Army | Remote sensing of vehicle tire pressure |
US5587698A (en) * | 1992-02-05 | 1996-12-24 | Genna; Robert A. | Automatic tire pressure control system for a vehicle |
EP1227018B1 (fr) * | 2001-01-29 | 2005-10-19 | The Goodyear Tire & Rubber Company | Procédé de détection de l'état d'un pneu |
US6518877B1 (en) * | 2001-05-31 | 2003-02-11 | The Goodyear Tire & Rubber Company | Pneumatic tire monitor |
-
2001
- 2001-03-29 FR FR0104292A patent/FR2822755B1/fr not_active Expired - Lifetime
-
2002
- 2002-03-27 WO PCT/FR2002/001074 patent/WO2002078985A1/fr not_active Application Discontinuation
- 2002-03-27 GB GB0325283A patent/GB2391633B/en not_active Expired - Lifetime
- 2002-03-27 US US10/473,808 patent/US6959596B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4695823A (en) * | 1984-04-27 | 1987-09-22 | Vernon Roger W | Vehicle tire monitoring apparatus |
EP0301127A1 (fr) * | 1987-07-31 | 1989-02-01 | Texas Instruments Deutschland Gmbh | Disposition de répondeur |
US5600301A (en) * | 1993-03-11 | 1997-02-04 | Schrader Automotive Inc. | Remote tire pressure monitoring system employing coded tire identification and radio frequency transmission, and enabling recalibration upon tire rotation or replacement |
US5853020A (en) * | 1995-06-23 | 1998-12-29 | Widner; Ronald D. | Miniature combination valve and pressure transducer and system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2930037A1 (fr) * | 2014-04-07 | 2015-10-14 | Goodrich Corporation | Système et appareil de détection de la pression d'un pneu de roue avant |
Also Published As
Publication number | Publication date |
---|---|
US20050066718A1 (en) | 2005-03-31 |
US6959596B2 (en) | 2005-11-01 |
GB2391633A (en) | 2004-02-11 |
FR2822755A1 (fr) | 2002-10-04 |
GB2391633B (en) | 2004-12-15 |
FR2822755B1 (fr) | 2004-05-21 |
GB0325283D0 (en) | 2003-12-03 |
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