摘要:
The aircraft tire pressure resonant loop link assembly electromagnetically couples a magnetic field between a wheel axle electromagnetic adapter transformer primary coil and a tire pressure sensor receiver coil for powering a tire pressure sensor, and includes a pair of spaced apart electrically conductive connecting arms, a single electrically conductive primary loop electrically connected to first ends of the connecting arms mounted adjacent to a secondary tire pressure sensor coil, and a circuit including a resonant tuning capacitor and a secondary coil with one or more electrically conductive loops at second ends of the connecting arms. The tire pressure sensor coil pair includes a transformer core, and secondary resonant coil pair also includes a transformer core.
摘要:
A device for maintaining a desired inflation pressure within a tire mounted on a wheel of a vehicle which includes a flexible compression chamber and a magnetic element not on the wheel. As the compressor passes the magnet each wheel revolution, a small amount of atmospheric air is pumped into the tire, if needed. The magnet and the compressor need no other contact with the vehicle or the wheel and require no energy source on the wheel.
摘要:
The invention relates to a transponder system for the contactless inductive power transmission of a stationary part having at least one read coil (2) disposed on the stator (1) to a rotating part having at least one transponder coil (4) disposed on a spindle (3). The aim of the invention is to provide a transponder system of the aforementioned kind which can be used for self-sufficient sensor applications even in the vicinity of metal materials and noise fields caused by electric motors conventional in mechanical engineering. For this purpose, the surrounding (5) of the read coil (2), especially the stator is produced from a material having little magnetic permeability and good electrical conductivity, preferably aluminum. The transponder coil (4) and/or the read coil (2) are disposed as flat coil (6) on the inside and/or outside of a cylindrical periphery (9, 10) of the stator and/or rotor (11). A layer (17, 18) of a material having high magnetic permeability is provided between the flat coil (8) and the rotor (11) or stator (1), preferably in the form of a foil of an amorphous ferritic material (17) or of a non-conducting ferritic metal (18).
摘要:
The aircraft tire pressure loop link is formed of first and second single metal loops connected by parallel spaced apart metal shafts, and provides for coupling a magnetic field between a wheel hub coil and a tire pressure sensor coil to provide electromagnetic communication between a control unit connect to the wheel hub coil and a tire pressure sensor connected to the tire pressure sensor coil. The current induced in the first single metal loop travels the distance from the edge of the wheel axle coil to the periphery of the of the wheel rim to the second single metal loop, which generates the flux in the tire pressure sensor receiver coil necessary to power the tire pressure sensor.
摘要:
A wheel housing unit is connected to a vehicle processing unit for each travelling wheel, which unit comprises a current supply unit connected to an on-board mains, an interface unit connected to a bus system, a control unit, a storage unit, an HF signal generator, a modulator/demodulator, an amplifier unit and at least one antenna, a transponder component is arranged in or on each tyre, which component comprises a circuit board with an electronic circuit, which incorporates at least one pressure and/or temperature sensor, an HF transponder circuit with receiving, transmitting and signal processing components and a rectifier and smoothing circuit, a coupling coil connecting the input terminals of the electronic circuit and surrounding an I-core, and a U-core magnetically coupled to the I-core, and is provided with an envelope provided with an air inlet and connected to the tyre, and where each tyre has a ring conductor which is arranged coaxially, penetrates the U-core and is thereby inductively coupled to it, and consists of flexible material (FIG. 2).
摘要:
The present invention relates to a system for transmitting tire condition variables from a transmission device mounted on a motor vehicle to an electronic evaluating or control unit arranged in the area of the vehicle body, which is detachably fastened to a motor vehicle wheel described hereinbelow for providing an electromechanical compound arrangement.Further, a transmission device is disclosed wherein tire condition variables can be detected, and wherein a coupling device is integrated into the wheel hub (3) and composed of a rotor and a non-rotating stator for producing a field coupling, and its one or more field coupling elements are arranged opposite one another, separated by a narrow air slot (24), and energy and/or signals are coupled by means of electric fields and/or magnetic fields and/or electromagnetic fields.Still further, the system contains a vehicle wheel equipped with sensors, consisting of wheel rim (1), pneumatic tire (2), and a sensor subassembly (13, 13′, 14, 15, 44) which rotates with the wheel. The wheel has a signal connection that can be connected to the transmission device.
摘要:
A wheel arrangement includes a wheel having a sensor for measuring pressure in the tyre; a spindle, about which the wheel is rotatably mounted with the aid of bearings around the spindle, and of communication elements between the sensor and elements for using measures, which are associated with the spindle. Communication elements are adapted to a transmission system with a frequency higher than 50 kHz comprising a rotating antenna which is supported by the wheel and a fixed antenna. The two antennae do not have their own rotational guiding element. The antennae are generally annular and disposed in a concentric manner on the same level around the wheel axis (X-X) of rotation, the average radial distance between the antennae exceeding 2 mm.
摘要:
A tyre (6) pressure sensor comprises a pressure-sensitive part (8), in particular with a deformable membrane (10), mounted in the centre of the hub (7) of wheel (2), and a transducer part (12) housed in the axle (1) of wheel (2). This arrangement in which the sensor is separated into two mutually rotating parts is nonetheless more practical and simpler than devices in which electric connection is required between a wheel carrying the sensor assembly and the read device. The invention applies in particular to aircraft.
摘要:
A method and apparatus for remotely measuring the pressure and temperature of gas in a vehicle wheel. The vehicle includes a frame member and a vehicle wheel mounted for rotation relative to the frame member about a rotation axis. A transmitting circuit is mounted on the frame member. The transmitting circuit includes a transmitting coil and generates electrical energy in the transmitting coil. A receiving circuit is mounted on the vehicle wheel for movement therewith such that, as the vehicle wheel rotates relative to the frame member, the receiving circuit is inductively coupled to the transmitting circuit. The receiving circuit includes a sensor for generating a data signal corresponding to a physical characteristic of the vehicle wheel and a wireless communication circuit for receiving the electrical energy from the transmitting coil to remotely power the receiving circuit and for transferring the data signal from the receiving circuit to the transmitting circuit.
摘要:
A device for exciting and monitoring wheel modules for monitoring tires crises control lines (5, 6) which excite simultaneously all the wheel modules except one, which is monitored. For this purpose, it comprises one exciting and monitoring assembly (2) per wheel. Each assembly (2) comprises an insulation transformer (20) of which the secondary (21) has a central point (21N) connected to earth. This arrangement ensures good electromagnetic compatibility and good insensitivity to radio frequencies.