WO2004023422A1 - ワイヤレスセンサシステムおよびワイヤレスセンサ付軸受装置 - Google Patents
ワイヤレスセンサシステムおよびワイヤレスセンサ付軸受装置 Download PDFInfo
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- WO2004023422A1 WO2004023422A1 PCT/JP2003/011459 JP0311459W WO2004023422A1 WO 2004023422 A1 WO2004023422 A1 WO 2004023422A1 JP 0311459 W JP0311459 W JP 0311459W WO 2004023422 A1 WO2004023422 A1 WO 2004023422A1
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- WIPO (PCT)
- Prior art keywords
- sensor
- unit
- wireless
- wireless sensor
- sensor signal
- Prior art date
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Classifications
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- 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
- B60C23/0418—Sharing hardware components like housing, antenna, receiver or signal transmission line with other vehicle systems like keyless entry or brake control units
- B60C23/042—Sharing hardware components like housing, antenna, receiver or signal transmission line with other vehicle systems like keyless entry or brake control units cooperating with wheel hub mounted speed sensors
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- 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
- B60C23/041—Means for supplying power to the signal- transmitting means on the wheel
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- 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
- B60C23/041—Means for supplying power to the signal- transmitting means on the wheel
- B60C23/0413—Wireless charging of active radio frequency circuits
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- 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
- B60C23/0418—Sharing hardware components like housing, antenna, receiver or signal transmission line with other vehicle systems like keyless entry or brake control units
-
- 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
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- 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
- B60C23/0483—Wireless routers between wheel mounted transmitters and chassis mounted receivers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
- F16C41/008—Identification means, e.g. markings, RFID-tags; Data transfer means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
- G01P3/446—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings mounted between two axially spaced rows of rolling elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
- F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
- F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
- F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
Definitions
- the present invention relates to a wireless sensor system, a bearing device with a wireless sensor, and a bearing device for a wheel with a wireless sensor, which wirelessly receive various detection signals, for example, detection signals such as a tire pressure and a wheel rotation speed in an automobile.
- detection signals for example, detection signals such as a tire pressure and a wheel rotation speed in an automobile.
- various detection targets such as rotation speed, temperature, vibration, etc. of bearings and other parts are detected and used for equipment control and state management, etc. I have.
- the output of such a sensor generally transmits a detection signal by wire, but it may be difficult to obtain an appropriate wiring location.
- a wireless sensor system that transmits a detection signal by an electromagnetic wave is used.
- the transmitter is said to have a small battery.
- tire pressure sensors For example, in automobiles, it is becoming mandatory to install tire pressure sensors in order to improve safety by detecting a decrease in tire pressure and detecting puncture early or predicting tire bust.
- most of these types of pneumatic sensors transmit their detection signals wirelessly to the vehicle body using electromagnetic waves, and have a structure that integrates a transmitter and a small battery to secure operating power. I have.
- ABS Anti-lock Brake System
- a wireless sensor that transmits a detection signal of the rotation sensor as an electromagnetic wave or the like has been proposed (for example, Japanese Patent Application Laid-Open No. 2002-150190).
- a typical example of this type of rotation sensor is to use a multi-pole rotating generator to simultaneously supply the sensor power and transmitter power by self-generated power and detect the rotation speed, so that the rotation speed sensor It is compactly configured without supplying power to the power supply (for example, Japanese Patent Application Laid-Open No. 2002-515113). Disclosure of the invention
- the battery has a limited life, and it is necessary to replace the battery as it is consumed, which makes managing the life of the battery cumbersome.
- problems such as the occurrence of wheel imbalance due to an increase in sensor weight also occur.
- rotation sensor that performs self-power generation, power is generated only when the wheels rotate, so it operates stably in the ABS operating range of about 1 O KmZh or more, but detection is not possible at extremely low speed near stop. May be stable. Also, it cannot be applied to detection targets other than rotation detection, such as temperature detection.
- An object of the present invention is to be able to supply operating power and transmit sensor signals to a plurality of sensor units, yet to achieve a lightweight and compact configuration, to be easy to maintain, and to be able to communicate at any time. It is to provide a simple wireless sensor system.
- Another object of the present invention is to provide a lightweight and compact configuration while being capable of supplying operating power and transmitting a sensor signal to a plurality of wireless sensor units, and having a simple and easy maintenance.
- the goal is to provide a wireless sensor system that can communicate.
- Still another object of the present invention is to enable a vehicle to transmit detection results such as tire pressure and wheel rotation speed as a wireless sensor signal, thereby reducing costs and maintenance-free due to a battery-less system, and ensuring wheel balance by reducing weight. Another object is to enable sensor operation at very low speeds.
- Still another object of the present invention is to provide a light weight and compact configuration while being capable of supplying operating power and transmitting a sensor signal to a plurality of sensor units, and also to facilitate maintenance and to operate at any time.
- Bearing device with wireless sensor capable of communication, and And a wheel bearing device with a wireless sensor.
- the wireless sensor system includes a plurality of sensor units (
- sensor signal transmitters (9A, 9B, 9) that wirelessly transmit the sensor signals output from these sensor units (6A to 6E), and the sensor units (6A to 6E) and sensor signal transmission
- the power receiver (8A, 8B, 8) wirelessly receives the operating power for driving the sections (9A, 9B, 9), and the sensor signal transmitted by the sensor signal transmitter (9A, 9B, 9)
- a feeding power transmitting unit (12) for wirelessly transmitting operating power to the power receiving units (8A, 8B, 8).
- Wireless transmission and reception of the sensor signal and the operating power may be transmission and reception using electromagnetic coupling, magnetic coupling, light, ultrasonic waves, or the like, as long as they can be transmitted and received wirelessly.
- the sensor units (6A to 6E) and the sensor signal transmitting units (9A, 9B, 9) are supplied with operating power wirelessly, the sensor units (6A to 6E) and the like are provided. There is no need to add a battery or generator to the sensor section (6A to 6E), etc., as the operating power of the sensor, and it can be made compact and lightweight, and maintenance is easy because battery replacement is not required. Unlike self-powered generators, detection and transmission / reception are possible at any time, regardless of the operating state of the installed equipment.
- the sensor signal receiving unit (13) can receive sensor signals of a plurality of sensor units (6A to 6E) transmitted by the sensor signal transmitting unit (9A, 9B, 9).
- the power supply power transmitting section (12) may be provided in the sensor signal receiver (5, 5A) having the sensor signal receiving section (13).
- a plurality of wireless sensor units (4A, 4B) are provided, and each of the wireless sensor units (4A, 4B) includes the sensor section (6A, 6B), the sensor signal transmitting section (9A, 9B), and Power receiver (8A, 8B) You may have.
- the wireless sensor unit (4A, 4B) can handle the sensor section (6A, 6B), sensor signal transmitting section (9A, 9B), and power receiving section (8A, 8B) as one set. Anything is acceptable, but it may be one that can be handled as an integral object.
- the wireless sensor unit (4A, 4B) has a common housing or base with the above-mentioned sensor section (6A, 6B), sensor signal transmitting section (9A, 9B), and power receiving section (8A, 8B). It may be a transmission / reception unit in which a sensor signal transmission unit (9A, 9B) and a power reception unit (8A, 8B) are integrated, and the sensor unit (6A, 6B) The transmission and reception unit may be connected by wiring.
- a plurality of wireless sensor units (4A, 4B) are provided with a sensor unit (6A, 6B), a sensor signal transmitting unit (9A, 9B), and a power receiving unit (8A, 8B).
- the wireless sensor units (4A, 4B) can be installed separately from each other because they can independently transmit and receive sensor signals, and the degree of freedom in the arrangement of the wireless sensor units (4A, 4B) can be increased. You.
- one wireless sensor unit (6) having the sensor unit (6 (: to 6E), the sensor signal transmitting unit (9), and the power receiving unit (8))
- the wireless sensor unit (4) is provided with a plurality of the sensor units (6C to 6E), and the sensor signal transmission unit (9) is provided with the sensor signals of the plurality of sensor units (6C to 6E).
- the sensor signals of a plurality of sensor units (6C to 6E) can be transmitted by one sensor signal transmission unit (9), so the configuration is simpler and more compact. Is performed.
- the signal transmitting section in the wireless sensor unit (4A, 4B) having a plurality of sensor sections (6C to 6E) transmits detection signals of the plurality of sensor sections (6C to 6E).
- a wireless sensor unit (4A, 4B) having a plurality of sensor units (6C to 6E) and a wireless sensor unit (4A, 4B) having one sensor unit (6A, 6B) are provided. It can be used properly depending on the type of machinery, etc., and the application range of the present invention is expanded.
- Another wireless sensor system provides a plurality of wireless sensor units (4A, 4B), wirelessly supplies power to the plurality of wireless sensor units (4A, 4B), and receives respective sensor signals. It has a sensor signal receiver (5, 5 A).
- Each of the above wireless sensor units (4A, 4B) includes a power receiving unit (8A, 8B) that obtains operating power from an electromagnetic wave of a predetermined power supply frequency by a tuning circuit and a detection rectifier circuit, and a sensor unit (4) that detects a detection target. 6A, 6B) and a sensor signal transmitting section (9A, 9B) for transmitting the signal detected by the sensor section (6A, 6B) as a wireless sensor signal of an electromagnetic wave having a natural frequency different from the power supply frequency. Having.
- the sensor signal receiver (5, 5A) includes a power supply power transmitting unit (12) for transmitting the electromagnetic wave of the power supply frequency and a natural frequency of each of the plurality of wireless sensor units (4A, 4B).
- a sensor signal receiving unit (13) capable of receiving a sensor signal.
- each wireless sensor unit (4A, 4B) is supplied wirelessly, so there is no need to add a battery or generator to the sensor as sensor operating power, making it compact and lightweight. And maintenance is easy because battery replacement is not required.
- a wireless sensor unit (5, 5A) supplies wireless power and receives sensor signals to multiple wireless sensor units (4A, 4B). The whole system has a simple configuration.
- the sensor signal receiving section (13) of the sensor signal receiver (5) has a plurality of single-frequency receiving circuits (13a) corresponding to the natural frequencies transmitted by each wireless sensor unit (4A, 4B). You may have it.
- Each receiving circuit (13a) has a simple configuration because it has multiple independent receiving circuits (13a). Only needs to be done.
- the sensor signal receiver (13) of the sensor signal receiver (5A) includes a plurality of single frequency tuning circuits (37A) corresponding to the natural frequencies transmitted by each wireless sensor unit (4A, 4B). , 37B) and a switching detector (41) for detecting the output of the plurality of tuning circuits (37A, 37B) by switching in a time-division manner.
- the switching detection unit (41) requires switching means.
- one wireless detection unit (42) can detect each wireless sensor signal separately, the wireless sensor unit (4A, 4B) Even when the number is large, the configuration of the sensor signal receiver (5A) can be simplified.
- the sensor signal receiving section (13) of the sensor signal receiver (5A) can arbitrarily change the receiving frequency, and can switch a plurality of wireless sensor signals by switching the receiving frequency in a time-division manner. It may be received.
- the sensor signal receiving unit (13) of the sensor signal receiver (5A) is a single signal unit capable of changing the tuning frequency in accordance with the natural frequency transmitted by each wireless sensor unit (4A, 4B).
- the tuning circuit may be used as a tuning circuit, and the natural frequency of the tuning circuit may be time-divisionally switched for detection.
- the polarization planes of the power supply electromagnetic wave and the wireless sensor signal electromagnetic wave may be different from each other. By using different frequencies for the power supply electromagnetic wave and the wireless sensor signal electromagnetic wave, the transmission power does not affect the reception circuit.However, by changing the polarization plane of the electromagnetic wave between transmission and reception, The signal separation between the transmitting and receiving circuits can be improved.
- the polarization planes of the wireless sensor signal electromagnetic waves transmitted by the wireless sensor units (4A, 4B) may be different from each other.
- Each wireless sensor signal can also be received separately by changing the frequency, but in this case also, the signal separation can be improved by making the polarization planes different from each other.
- the plurality of wireless sensor units (4A, 4B) may be installed on different bearings (51, 52) in the mechanical equipment (53).
- the mechanical equipment (53) may be a machine installed in a factory, for example, an industrial machine, a machine tool, a transport machine, or the like, or may be a railway car, an automobile, or the like.
- the bearings (51, 52) are rolling bearings.
- the mechanical equipment (53) may be a conveyor line, and the bearings (51, 52) on which the wireless sensor units (4A, 4B) are installed may be bearings for supporting the drive rollers of the individual conveyors. .
- the sensor (6A) may be a rotation sensor of an automobile tire pressure sensor or a wheel bearing device.
- a plurality of wireless sensor units (4A, 4B) include a sensor unit (6B) for a vehicle tire pressure sensor and a sensor unit (6A) for a rotary sensor of a wheel bearing device. There may be both.
- the rotation sensor is a wheel rotation sensor.
- the wireless sensor unit (4A, 4B) uses a tire pressure sensor as the sensor section (6B), a battery for operating power is not required, so maintenance-free replacement of batteries and weight reduction are required. Wheel balance can be secured.
- the rotation sensor is used as the sensor unit (6A), unlike the power generation type using wheel rotation, power can be supplied from the vehicle body even when the vehicle stops, so it is generally used together with an active sensor such as a hall IC.
- 0-speed detection rotation detection when the vehicle is almost stopped
- advanced controls such as ABS operation just before stopping on a low friction coefficient road and traction control at the time of starting and extremely low speed are available.
- Driving stability can be achieved.
- a wireless sensor unit for tire pressure (4B) and a wireless sensor unit for wheel rotation detection (4B) are provided, since both are installed around the wheels in the same tire house, multiple Power supply to the wireless sensor units (4A, 4B) in common, and 'The signal can be detected with weak electromagnetic waves.
- a plurality of wireless sensor units (4A, 4B) are provided in the bearing, and the wireless sensor units (4A, 4B) each have a sensor unit (6A, 6A) for detecting a detection target.
- a sensor signal transmitting section (9A, 9B) for wirelessly transmitting the sensor signal output from the sensor section (6A, 6B), the sensor section (6A, 6B) and a sensor signal transmitting section (9A , 9B), and a power receiving unit (8A, 8B) that wirelessly receives the operating power.
- a bearing is provided with one of a plurality of wireless sensor units (4A, 4B), and the plurality of wireless sensor units (4A, 4B) are A sensor section (6A, 6B) for detecting a detection target, and a sensor signal transmission section (9A, 9B) for wirelessly transmitting a sensor signal output from the sensor section (6A, 6B).
- the units (4A, 4B) receive the sensor signal transmitted from the sensor signal transmitting unit (9A, 9B) by the sensor signal receiving unit (13) common to each other, and the power supply transmitting unit (12) common to the units.
- the wireless sensor unit (4A, 4B) installed on the bearing and the wireless sensor unit (4A, 4B) installed on another device share a common sensor signal receiving unit (13) and power supply power.
- the transmission unit (12) can receive sensor signals and wirelessly supply power, and requires only a simple configuration.
- Still another bearing device with a wireless sensor includes a plurality of sensor units (6C to 6E) for detecting a detection target, and a plurality of sensor units (6C to 6E).
- multiple sensor units (6C to 6E) such as a rotation sensor, a temperature sensor, and a vibration sensor are installed on the bearing, and these signals are transmitted by the common sensor signal transmission unit (9).
- the common sensor signal transmission unit (9) can be.
- power reception can be performed in common, and a simple configuration is sufficient.
- At least one of the sensor units (6A to 6E) provided in the bearing is a rotation sensor, and the rotation sensor has a large number of magnetic poles in a circumferential direction. And a magnetic sensor (18) for detecting its magnetic pole.
- This magnetic sensor (18) is preferably a magnetoresistive sensor.
- the rotation sensor is a combination of a multi-pole magnet (17) and a magnetic sensor (18), a small-sized rotation sensor with high accuracy such as resolution can be constructed. Further, since the magnetoresistive magnetic sensor (18) consumes less power, it is preferable as a sensor to be combined with wireless power supply, which has lower power supply efficiency than wiring.
- the sensor unit (6A to 6E) is in a sealed space that is shut off from the outside of the bearing, and the power receiving unit (8, 8A, 8B).
- the sensor signal transmitter (9, 9 A, 9 B) may be outside the bearing.
- the above-mentioned sealed space is, for example, a bearing inner space sealed with seals on both sides between an inner ring and an outer ring in a rolling bearing.
- the inner member (2) and the outer member (1) are used. The space between them.
- the sensor section (6A to 6E) is in a sealed space that is shielded from the outside of the bearing, it is protected from external dust, foreign matter, water, etc., so the reliability and durability of the sensor section (6A to 6E) are improved. I do.
- the bearing device is a wheel bearing device (33)
- the bearing is in an environment where the bearing faces the road surface and is susceptible to foreign matter and salt and muddy water. Is more effective.
- the power receiving unit (8, 8 A, 8B) and the sensor signal transmitting unit (9, 9 A, 9B) are located outside the bearing. Some are preferred in terms of wireless transmission and reception.
- the wheel bearing device (33) includes: an outer member (1) having a double-row raceway surface; an inner member (2) having a raceway surface facing the raceway surface; A wheel bearing device (33), comprising a plurality of rolling elements (3) interposed between the raceway surfaces and rotatably supporting the wheels with respect to the vehicle body (33),
- One of the plurality of wireless sensor units (4A, 4B) is provided on the wheel bearing device (33), and the plurality of wireless sensor units (4A, 4B) each have a sensor unit (4) for detecting a detection target. 6A, 6B), a sensor signal transmitter (9A, 9B) that wirelessly transmits the sensor signal output from the sensor unit (6A, 6B), and the sensor unit (6A, 6B) and a sensor signal transmission And a power receiving unit (8A, 8B) for wirelessly receiving operating power for driving the units (9A, 9B), and the plurality of wireless sensor units (4A, 4B) receive a common sensor signal.
- the sensor signal transmitted from the sensor signal transmitting section (9A, 9B) is received by the section (13), and the operating power is transmitted to the power receiving section (8A, 8B) by the common power supply power transmitting section (12).
- the wheel bearing device (33) With this configuration, it is possible to supply operating power and receive sensor signals to multiple wireless sensor units (4A, 4B), but to achieve a lightweight and compact configuration. In addition, maintenance is easy, and communication is possible even in a stopped state.
- Another wheel bearing device (33) faces an outer member (1) having a double-row raceway surface and an inner member (2) having a raceway surface facing the raceway surface.
- a bearing device for a wheel comprising a plurality of rolling elements (3) interposed between the raceway surfaces of both rows, and rotatably supporting the wheel with respect to the vehicle body,
- the bearing has multiple sensor sections (6C to 6E), so that it can detect temperature, vibration, load, torque, preload, etc. in addition to, for example, the number of rotations. It is possible to improve vehicle control.
- bearing failure diagnosis can be performed from bearing information such as temperature.
- the above-described respective effects can be obtained by having such a plurality of sensor units (6C to 6E).
- the wireless sensor-equipped wheel bearing device (33) having any one of the above-described configurations of the present invention
- the sensor signal receiving section (13) for receiving the sensor signal transmitted from the sensor signal transmitting section (9, 9A, 9B) in the wheel bearing device with sensor (33), and the power receiving section (8, 8A , 8B), a power transmission unit (12) for wirelessly transmitting the operating power to the sensor signal reception unit (13) and the power transmission unit (12) are connected to the wheel bearing device (33).
- the part of the vehicle body that is farther away from the wheel bearing device (33) than the tire house (34a) is where a device (ECU, etc.) that performs electrical control of the entire vehicle in an automobile, such as a console, is installed. May be.
- the tire house (34a) and wheels It is possible to eliminate the harness between the bearing devices (33), thereby avoiding failure due to breakage of the harness due to stepping stones and reducing the weight. If the tire house (34a) is equipped with a sensor signal receiving unit (13) and a power supply transmitting unit (1 2), the distance for wireless transmission / reception can be short, so that the radio wave intensity can be weakened and power consumption is low. Do it.
- a wireless sensor system includes: a plurality of sensor units for detecting a detection target; a sensor signal transmitting unit for wirelessly transmitting sensor signals output from the sensor units; and the sensor unit and the sensor signal transmitting unit.
- a power receiving unit that wirelessly receives the operating power to be driven, a sensor signal receiving unit that receives the sensor signal transmitted by the sensor signal transmitting unit, and a power supply transmission that wirelessly transmits the operating power to the power receiving unit. Since it is possible to supply operating power and transmit sensor signals to a plurality of sensor units, it is possible to provide a lightweight and compact configuration, and it is easy to maintain. But it can be a system that can communicate.
- the operating power is wirelessly supplied to a plurality of wireless sensor units by a common sensor signal receiver.
- Supply of sensor signals and transmission of sensor signals so that maintenance such as battery replacement is not required, and it is possible to reduce the weight of the wireless sensor unit and to enable sensor operation independent of the operation status of installed equipment. Because of the weight reduction, unbalance can be minimized especially when the wireless sensor unit is mounted on the rotating part.
- the wireless sensor unit When the wireless sensor unit is used as a tire pressure sensor for automobiles, cost reduction and maintenance-free due to battery-less, and improvement in wheel balance by weight reduction can be achieved.
- the wireless sensor unit When the wireless sensor unit is used as a rotation sensor for a wheel bearing device of an automobile, power can be supplied even when the vehicle is stopped, so that rotation can be detected when the vehicle is almost stopped, and a low friction coefficient road can be used.
- Driving stability can be achieved through more advanced controls such as ABS operation just before stopping, and traction control when starting or at extremely low speeds.
- the bearing device with a wireless sensor and the bearing device for a wheel with a wireless sensor according to the present invention can be supplied with a plurality of sensor units and can transmit a sensor signal, but can have a lightweight and compact configuration. Maintenance is easy, and communication can be performed at any time regardless of the bearing operation state.
- FIG. 1 is a block diagram showing a schematic configuration of a wireless sensor system according to an embodiment of the present invention.
- FIG. 2 is a circuit diagram showing a circuit configuration example of the same system.
- FIG. 3 is a circuit diagram showing a schematic configuration of a sensor signal receiver in a wireless sensor system according to another embodiment of the present invention.
- FIG. 4 is a cross-sectional view of a wheel bearing device provided with the wireless sensor system according to these embodiments.
- FIG. 5 is a cross-sectional view showing a part of a wheel to which the wireless sensor unit for tire pressure of the wireless sensor system is attached.
- FIG. 6 is a cross-sectional view of another example of the wheel bearing device including the wireless sensor system according to the above embodiment.
- FIG. 7 is a cross-sectional view showing another example of the mechanical equipment provided with the wireless sensor system according to the embodiment.
- FIG. 8 is a block diagram showing a schematic configuration of a wireless sensor system according to still another embodiment of the present invention.
- FIG. 9 is an explanatory diagram showing a conceptual configuration of a wheel bearing device to which the wireless sensor system is applied.
- FIG. 10 is a cross-sectional view of a specific example of the wheel bearing device. BEST MODE FOR CARRYING OUT THE INVENTION
- this wireless sensor system wirelessly supplies power to a plurality of wireless sensor units 4A and 4B and to the plurality of wireless sensor units 4A and 4B. And a sensor signal receiver 5 for receiving each sensor signal.
- the number of wireless sensors is not particularly limited, but Fig. 1 shows the case of two wireless sensors.
- Each wireless sensor unit 4A, 4B includes a sensor section 6A, 6B and a transmitting / receiving section 7A, 7B, respectively.
- Sensor units 6 A and 6 B detect the detection target Means.
- the transmission / reception units 7A and 7B are composed of power reception units 8A and 8B and sensor signal transmission units 9A and 9B, respectively.
- the power receiving units 8A and 8B are means for obtaining operating power from the electromagnetic waves having the predetermined power supply frequency f1 by the tuning circuits 10A and 10B and the detection rectifier circuits 11A and 11B. The obtained operating power is used for driving the sensor units 6A and 6B and the sensor signal transmitting units 9A and 9B.
- the power receiving units 8A and 8B are connected to the antenna 22, L
- It comprises a tuning circuit 1 OA composed of a C circuit 23 and the like, and a detection rectifier circuit 11 A composed of a diode 24, a capacitor 25 and the like.
- the sensor signal transmitting units 9A and 9B are means for transmitting the signals detected by the sensor units 6A and 6B as sensor signals of electromagnetic waves having natural frequencies f2 and f3 different from the power supply frequency f1, respectively. It is.
- the sensor signal transmitting sections 9A and 9B include an antenna 19, an LC circuit 20, a semiconductor switching element 21, and the like.
- the sensor signal receiver 5 includes a power supply power transmitting unit 12 for transmitting the electromagnetic wave having the power supply frequency f1 and a wireless power having the natural frequencies f2 and f3 transmitted by the plurality of wireless sensor units 4A and 4B. And a sensor signal receiving unit 13 capable of receiving a sensor signal.
- the power supply power transmission unit 12 includes a high-frequency transmission unit 26 and a transmission unit 27, and the transmission unit 27 includes an antenna 28, a (: circuit 29, a semiconductor switching element 30, and the like. It comprises a plurality (two in the example shown) of receiving circuits 13a corresponding to the wireless sensor units 4A and 4B, each receiving circuit 13a being a transmission frequency e of each wireless sensor unit 4A and 4B.
- This is a single-frequency receiving circuit corresponding to each of 2 and f3, and has a tuning circuit 37 and a detection unit 38.
- the tuning circuit 37 includes an antenna 39, an LC circuit 40, and the like.
- the polarization plane of the power supply electromagnetic wave transmitted from the sensor signal receiver 5 and the polarization plane of the sensor signal electromagnetic wave transmitted from each wireless sensor unit 4A, 4B are different from each other.
- the polarization planes different from each other in addition to the frequency difference, the influence of the power supply electromagnetic wave on the sensor signal electromagnetic wave is more reliably avoided, and the signal separation is improved.
- sensor signals transmitted from each wireless sensor unit 4A, 4B The polarization planes of the signal electromagnetic waves are also different from each other. As a result, interference of electromagnetic waves for sensor signals transmitted from the wireless sensor units 4A and 4B can be avoided and signal separation can be improved.
- the wireless sensor system having this configuration, since the operating power is wirelessly supplied to each of the wireless sensor units 4A and 4B, it is not necessary to add a battery or a generator to the sensor as the operating power of the sensor. Lightweight configuration. Maintenance is easy because battery replacement is not required. In addition, since a plurality of wireless sensor units 4A and 4B perform wireless power supply and wireless sensor signal reception from a common sensor signal receiver 5, the entire wireless sensor system is simplified. Configuration.
- FIG. 3 shows a configuration of a sensor signal receiver 5A according to another embodiment of the present invention.
- This embodiment is the same as the first embodiment shown in FIG. 2, except that the sensor signal receiver 5A has the configuration shown in FIG.
- the same wireless sensor unit as in the first embodiment is used.
- the sensor signal receiving unit 13 A of the sensor signal receiver 5 A is a single unit corresponding to the natural frequencies f 2 and f 3 transmitted by the wireless sensor units 4 A and 4 B (FIG. 2), respectively.
- Switching detector 4 1 is the detector
- the wireless sensor for detecting the rotational speed received by the tuning circuit 37A is used.
- the detection unit 42 detects the signal of frequency ⁇ 2 from the unit 4A.
- the switching section 4 3 of the switching detection section 4 1 switches the tuning circuit 37 to the detection section 42
- the signal of the frequency f 3 from the wireless sensor unit 4 ⁇ ⁇ received by the tuning circuit 37 ⁇ is received.
- the detection unit 42 detects.
- a plurality (here, two) of the wireless sensor units 4 A , 4B, the electromagnetic waves of natural frequencies f2, f3 can be detected separately by one detector unit 42 in the sensor signal receiver 5A, so that even if the number of wireless sensor units is large, the sensor The configuration of the signal receiver 5A can be simplified.
- tuning is performed in accordance with the natural frequency transmitted by each wireless sensor unit 4A and 4B (FIG. 2).
- a single tuning circuit that can vary the frequency may be provided.
- the sensor signal receiving section 13 A is a circuit that switches the natural frequency of the variable tuning circuit in a time-division manner by the switching section and detects the signal by the detecting section 42.
- the rotation speed of the wheel 31 and the tire pressure are detected.
- the wheel 31 is rotatably supported by the vehicle body 34 via a wheel bearing device 33.
- the wheel bearing device 33 has a double-row rolling element 3 interposed between an outer member 1 serving as a wheel supporting member and an inner member 2 serving as a rotating member.
- the outer member 1 is supported by a suspension projecting downward from the vehicle body 34 via a knuckle (not shown).
- the inner member 2 is a combination of a hub wheel 2A having a wheel mounting flange 2a on one end and an outer ring 15a of a constant velocity joint 15 and a wheel mounting flange 2a of the hub wheel 2A. Wheels 31 are installed.
- the inner member 2 of the wheel bearing device 33 of the wheel 31 is connected to the axle 16 via a constant velocity joint 15.
- a wireless sensor unit 4 A for detecting the rotation speed of the wheel 31 is installed at one end of the annular space between the outer member 1 and the inner member 2. Further, a wireless sensor unit 4B for detecting the tire air pressure is provided on the wheel 31. For example, to the tire house 34 a of the vehicle body 34, power is supplied wirelessly to the wireless sensor units 4 A and 4 B, and the sensor signals from the wireless sensor units 4 A and 4 B are received. The sensor signal receiver 5 is installed.
- Each wireless sensor unit 4A, 4B has the configuration described above with reference to FIG.
- the sensor signal receiver 5 is the one described with reference to FIG. 2 or the one described with FIG.
- the sensor section 6A of the wireless sensor unit 4A for detecting the rotation speed is composed of a magnetic encoder 17 mounted on the inner member 2 as shown in FIG.
- a magnetic sensor 18 is attached to the outer member 1 so as to face the magnetic encoder 17.
- the magnetic encoder 17 is composed of a multipole magnet provided with magnetic poles N and S arranged side by side in the circumferential direction. Ferrite magnets, rare earth rubber magnets, plastic magnets, and sintered magnets may be used as magnets.
- the magnetic sensor 18 is a magnetoresistive sensor, that is, a sensor using a magnetoresistive element (also called an “MR element”).
- the magnetic sensor 18 detects a change in the magnetic pole of the magnetic encoder 17 accompanying the rotation of the wheel 31 and is incremental. And outputs a simple pulse signal as a sensor signal.
- the magnetic sensor 18 may be a Hall effect sensor, an MI sensor, a flux gate magnetic field sensor, or the like, in addition to the magnetoresistive sensor. If the rotation sensor is a combination of a multi-pole magnet and a magnetic sensor, a small-sized rotation sensor with high accuracy such as resolution can be configured.
- a magnetoresistive magnetic sensor can reduce power consumption by increasing the resistance value of the sensor element, and is thus preferable as a sensor to be combined with wireless power supply, which has lower power supply efficiency than wiring.
- the wireless sensor unit 4B for detecting tire pressure is mounted on a part of a tire wheel 35, for example, as shown in FIG.
- the sensor section 6B (FIG. 1) of the wireless sensor unit 4B for detecting tire pressure is a sensor that detects the pressure of the tire 36.
- the operation will be described.
- the power supply electromagnetic waves transmitted from the power supply power transmission section 12 (Fig. 1) of the sensor signal receiver 5 installed on the vehicle body 34 are transmitted by the wireless sensor unit 4A for detecting the rotational speed and the wireless sensor for detecting the tire pressure.
- Operating power is obtained in each wireless sensor unit 4A, 4B by being received and detected and rectified by each of the power receiving units 8A, 8B of the unit 4B.
- the rotational speed of the wheel is detected by the sensor unit 6A. That is, the magnetic sensor 18 of the wheel rotation sensor on the outer member 1 detects a change in magnetic pole of the magnetic encoder 17 on the inner member 2 due to the rotation of the wheel 31, and the incremental detection is performed. Output a signal.
- This detection signal is wirelessly transmitted by the sensor signal transmitting unit 9A using an electromagnetic wave having a frequency of ⁇ 2 as a carrier.
- This electromagnetic wave is received and detected by the receiving circuit corresponding to the wireless sensor unit 4 ⁇ ⁇ ⁇ among the two receiving circuits in the sensor signal receiving section 13 of the sensor signal receiver 5, and is output as a sensor signal relating to the wheel rotation speed. Is done.
- the tire air pressure is detected by the sensor unit 6B.
- the detection signal is wirelessly transmitted by the sensor signal transmitting unit 9B using an electromagnetic wave of frequency f3 as a carrier. This electromagnetic wave is received and detected by the receiving circuit corresponding to the wireless sensor unit 4B among the two receiving circuits in the sensor signal receiving section 13 of the sensor signal receiver 5, and is detected as a sensor signal related to tire pressure. Is output.
- the sensor signal receiver 5 installed in the vehicle body 34 wirelessly supplies power as electromagnetic waves to the wireless sensor units 4A and 4B, Since the sensor signals transmitted as electromagnetic waves from the sensor units 4A and 4B are received, there is no problem such as running out of battery as in the conventional example in which a battery is used as a power source for the sensor. Further, the detection results such as the detected tire pressure and wheel rotation speed can be reliably transmitted as a wireless signal, and the sensor units 6A and 6B in each of the wireless sensor units 4A and 4B can be configured compactly and inexpensively. Maintenance is easy because battery replacement is not required.
- a wireless sensor unit 4 A for detecting the number of revolutions which has a magnetic sensor 18 as the sensor unit 6 A, it is not a self-generating type that generates operating power by the rotation of the wheel 31, so when the wheel is almost stopped However, it can reliably detect the rotational speed, and can achieve running stability through more advanced control such as ABS operation just before stopping on a road with a low friction coefficient and traction control at start-up and at extremely low speed.
- the wireless sensor unit 4B having a tire pressure sensor as the sensor section 6B, there is no battery for operating power, so the wheel is reduced by weight. Balance can be ensured.
- the wheel bearing device 33 shown in FIG. 4 is of the fourth generation type, but the present invention can be applied to each generation type of wheel bearing device, for example, the third generation type shown in FIG. It can be applied to the wheel bearing device.
- the inner member 2 is composed of a hub wheel 2A and an inner ring 2B fitted to the outer periphery of one end of the hub wheel 2A, and the raceway surfaces of each row are formed on the hub wheel 2A and the inner ring 2B. You.
- the raceway surfaces facing both raceway surfaces are provided on the inner periphery of the outer member 1 as in the example shown in FIG.
- the shaft provided on the outer ring 15a of the constant velocity joint 15 is fitted to the hub wheel 2A, and the inner member 2 and the constant velocity Jont outer ring 15a are connected.
- the sensor section (rotation sensor) 6 A of the wireless sensor unit 4 A for detecting the rotation speed is provided with the magnetic encoder 17 mounted on the inner member 2 and mounted on the outer member 1 opposed to the magnetic encoder 17. And a magnetic sensor 18.
- the magnetic encoder 17 is provided on a slinger serving as a seal component mounted on the inner member 2.
- the other configurations in the example of FIG. 7 are the same as those of the embodiment shown in FIGS.
- a plurality of wireless sensor units 4A and 4B are connected, for example, as shown by a chain line in FIG. It may be provided on the outer member 1.
- one wireless sensor unit 4A has, for example, a rotation sensor as the sensor unit 6A
- another wireless sensor unit 4B has a temperature sensor or a vibration sensor as the sensor unit. 6 B may be used.
- FIG. 7 shows still another embodiment of the present invention.
- each of the plurality of rolling bearings 51 and 52 is provided with a wireless sensor in the embodiment shown in FIGS. Units 4 A and 4 B are installed.
- the mechanical equipment 53 is, for example, a conveyor line such as a roller conveyor or a belt conveyor, and a rotating shaft 59 serving as a shaft of a conveyor port or a belt drive roller is provided by the rolling bearings 51 and 52. It is rotatably supported.
- Each rolling bearing 51, 52 is a rolling element between the inner ring 54, the outer ring 55.
- a seal 58 is provided with 56 interposed, and is made of a deep groove ball bearing or the like.
- Each rolling element 56 is held by a holder 57.
- the wireless sensor unit 4 A installed on one rolling bearing 51 is for rotation detection, and the sensor section 6 A is composed of a magnetic encoder 17 mounted on the inner shaft 54 and a magnetic encoder 17. And a magnetic sensor 18 attached to the outer ring 55 in opposition to 17.
- the sensor unit 6B installed in the other rolling bearing 52 the sensor unit 6B is a sensor that detects another detection target of rotation in the bearing 52, for example, temperature or vibration.
- the sensor signal receiver 5 can receive sensor signals and transmit operating power to the wireless sensor units 4A and 4B installed on the dual bearings 51 and 52, respectively. Installed in a location.
- This embodiment has the same configuration as the embodiment shown in FIG. 1 and FIG. 2 except for the matters specifically described.
- the sensor signals detected by the wireless sensor units 4A and 4B at the plurality of rolling bearings 51 and 52 in the mechanical equipment 53 can be received by the common sensor signal receiver 5, and Power can be supplied from the sensor signal receiver 5 common to the sensor units 4A and 4B.
- the wireless sensor unit 4A, 4B has been described as two, but the wireless sensor unit is installed on three or more rolling bearings in the mechanical equipment 53, and the common sensor is installed.
- the signal receiver 5 may receive the sensor signal and perform wireless power supply.
- FIG. 8 shows still another embodiment of the present invention.
- the wireless sensor system includes one wireless sensor unit 4 and a plurality of sensor units 6C to 6E provided in the wireless sensor unit 4.
- the wireless sensor unit 4 includes the plurality of sensor units 6 (: to 6E, a sensor signal transmitting unit 7, and a power receiving unit 9.
- the sensor signal transmitting unit 9 includes the plurality of sensor units 6 (: 6E to 6E.
- the outputs of the plurality of sensor units 6C to 6E are processed by the signal summing unit 60 so that they can be transmitted by the sensor signal sending unit 9.
- Means 60 is that the sensor signals of each sensor section 6C to 6E are Any signal processing unit may be used as long as it processes the signal so that it can be received separately.
- the sensor signals of the sensor units 6C to 6E are time-divisionally transmitted to the sensor signal transmitting unit 9.
- the signal summing means 60 may superimpose the sensor signals of the sensor units 6C to 6E.
- the power receiving unit 8 supplies the received power to each of the sensor units 6C to 6E, the sensor signal transmitting unit 7, and the signal summing unit 60.
- a transmission unit 7 is configured by the sensor signal transmission unit 9, the power reception unit 8, and the signal grouping unit 60.
- the signal summarizing means 60 may be provided as a part of the sensor signal transmitting section 9 or may be provided separately from the sensor signal transmitting section 9.
- the sensor signal receiver 5 wirelessly supplies power to the sensor signal receiving unit 13 for receiving the sensor signal transmitted from the sensor signal transmitting unit 7 of the wireless sensor unit 4 and the power receiving unit 8 of the wireless sensor unit 4. And a power supply transmitting unit 12.
- the sensor signal receiving unit 13 converts the sensor signals of the respective sensor units 6 C: to 6 E transmitted from the sensor signal transmitting unit 9 of the wireless sensor unit 4 in accordance with the processing mode of the signal summarizing unit 60. , And can be received separately. Transmission or reception of signals or power between the sensor signal transmitting unit 9 and the sensor signal receiving unit 13 and between the power supply power transmitting unit 12 and the power receiving unit 8 may be performed as long as they can be performed wirelessly. For example, electromagnetic waves are used.
- Each of the sensor sections 6C to 6E detects the same type of detection target (for example, temperature), but detects different detection targets, for example, detects rotation, temperature, and vibration, respectively. It may be.
- one of the plurality of wireless sensor units 4A and 4B provided as in the example of FIG. 1 may be provided with a plurality of sensor units 6C to 6E as in the example of FIG. good. Also in that case, it is preferable to provide the signal grouping means 60.
- FIG. 9 shows a conceptual configuration of a wheel bearing device to which the wireless sensor system in the embodiment of FIG. 8 is applied.
- the plurality of sensor units 6C to 6E are a rotation sensor, a temperature sensor, and a vibration sensor, respectively.
- the parts 6D and 6E are installed on the outer member 1 which is the outer member of the wheel bearing device.
- the sensor section 6C serving as a rotation sensor is provided on the outer member 1 so that rotation between the inner member 2 serving as an inner member and the outer member 1 can be detected.
- the sensor signal receiver 5 is installed in a tire house (not shown in the figure). In this configuration, the wheel rotation speed, temperature, and vibration can be detected simply by installing one wireless sensor unit 4 in the wheel bearing device 33. Moreover, wireless power can be supplied to the wireless sensor unit 4, which eliminates the need for a harness between the tire house and the wheel bearings. I can do it.
- by having a plurality of sensor sections 6C to 6D intelligent bearings can be achieved, and sophistication of vehicle control can be achieved. Furthermore, bearing failure diagnosis can be performed from bearing information such as temperature.
- FIG. 10 shows a specific structure example of the wheel bearing device shown in FIG.
- the wheel bearing device 3 3 in the figure is a fourth-generation type, and the inner member 2 is composed of a hub wheel 2 A and an outer ring 15 a of a constant velocity joint 15. A and the constant velocity joint outer race 15a are provided with raceways of each row on the inner member 2 side.
- One wireless sensor unit 4 is installed on the outer member 1 of the wheel bearing device 33.
- the sensor units 6C to 6E of the wireless sensor unit 4 are located in an enclosed space that is shielded from the outside of the wheel bearing device 33, and the power receiving unit 8 and the sensor signal transmitting unit 9 are installed outside the bearing.
- the wireless sensor unit 4 forms an integrated unit by integrating the circuit box 81 and the sensor installation section 82, and the circuit box 81 is installed on the outer surface of the outer member 1. ing.
- the sensor installation portion 82 faces the bearing space through a radial hole provided in the outer member 1.
- the power receiving unit 8 and the sensor signal transmitting unit 9 are installed in the circuit box 81, and the sensor units 6C to 6E are installed in the sensor installing unit 82.
- the sensor section 6C is composed of a magnetic sensor 18 constituting a rotation sensor and a magnetic encoder 17 facing the magnetic sensor 18 of which the magnetic sensor 18 is provided in the sensor installation section 82. .
- the magnetic encoder 17 is It is provided on the outer periphery.
- seals 83 and 84 for sealing the bearing space between the outer member 1 and the inner member 2 are provided at both ends.
- the sensor sections 6C to 6E are located in this sealed space and between the rows of the rolling elements 3 in both rows. As described above, the sensor sections 6C to 6E are closed from the outside of the bearing. When in the space, it is protected from external dust, foreign matter, water, etc., so that the reliability and durability of the sensor units 6C to 6E are improved.
- FIG. 10 illustrates the case where the present invention is applied to the fourth-generation type wheel bearing device 33, the sensor unit 6 (in the same manner as described above) is used in other generation type bearing devices such as the third-generation type. : ⁇ 6 E may be installed in an enclosed space that is shielded from the outside of the bearing, and the power receiving unit 8 and the sensor signal transmitting unit 9 may be installed outside the bearing.
- a single sensor unit may be provided, or a plurality of sensor units may be provided, and some of the sensor units may be arranged outside the bearing.
- the wireless sensor unit 4 installed in the wheel bearing device 33 may be any one of the wireless sensor units 4A and 4B in the embodiment of FIG.
- each of the sensor signal receivers 5 may receive the sensor signal of the sensor signal transmission unit of the same wireless sensor unit, or the sensor signals of a plurality of different wireless sensor units.
- the sensor signal of the transmission unit may be received.
- the sensor signal receiving unit and the power supply power transmitting unit are not necessarily provided in the same sensor signal receiver 5, and may be provided separately.
- the sensor signals may be received by separate sensor signal receivers, and wireless power may be supplied to a plurality of wireless sensor units by the same power supply transmission unit 12. good.
- wireless transmission / reception is performed by electromagnetic waves.
- the present invention only needs to be able to wirelessly transmit / receive both sensor signals and operating power.
- electromagnetic coupling, light, ultrasonic waves For example, transmission and reception may be performed.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03794288A EP1542190B1 (en) | 2002-09-09 | 2003-09-08 | Wireless sensor system and bearing device having wireless sensor |
US10/526,903 US7561035B2 (en) | 2002-09-09 | 2003-09-08 | Wireless sensor system and bearing assembly equipped with the same |
AU2003262003A AU2003262003A1 (en) | 2002-09-09 | 2003-09-08 | Wireless sensor system and bearing device having wireless sensor |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2002262262 | 2002-09-09 | ||
JP2002-262262 | 2002-09-09 | ||
JP2003306181A JP4963006B2 (ja) | 2002-09-09 | 2003-08-29 | ワイヤレスセンサシステムおよびワイヤレスセンサ付車輪用軸受装置 |
JP2003-306181 | 2003-08-29 |
Publications (1)
Publication Number | Publication Date |
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WO2004023422A1 true WO2004023422A1 (ja) | 2004-03-18 |
Family
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PCT/JP2003/011459 WO2004023422A1 (ja) | 2002-09-09 | 2003-09-08 | ワイヤレスセンサシステムおよびワイヤレスセンサ付軸受装置 |
Country Status (6)
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US (1) | US7561035B2 (ja) |
EP (1) | EP1542190B1 (ja) |
JP (1) | JP4963006B2 (ja) |
CN (1) | CN100416617C (ja) |
AU (1) | AU2003262003A1 (ja) |
WO (1) | WO2004023422A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105763158A (zh) * | 2016-04-26 | 2016-07-13 | 广东大粤新能源科技股份有限公司 | 通过手机监控光伏电站的方法 |
Families Citing this family (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7603894B2 (en) * | 2000-09-08 | 2009-10-20 | Automotive Technologies International, Inc. | Self-powered tire monitoring system |
US20060153482A1 (en) * | 2003-04-07 | 2006-07-13 | Ntn Corporation | Wheel support bearing assembly with built-in load sensor |
WO2005003709A1 (ja) * | 2003-07-04 | 2005-01-13 | Ntn Corporation | 荷重センサ内蔵の車輪用軸受 |
DE10344575A1 (de) * | 2003-09-25 | 2005-04-28 | Siemens Ag | Vorrichtung zur Übertragung von Daten sowie tragbares elektronisches Gerät und Feldgerät für eine derartige Vorrichtung |
JP2005098941A (ja) * | 2003-09-26 | 2005-04-14 | Ntn Corp | ワイヤレスセンサ付軸受装置 |
DE102004004292A1 (de) * | 2004-01-28 | 2005-09-08 | Siemens Ag | Anordnung und Verfahren zum bidirektionalen Übertragen von Signalen bei einem Kraftfahrzeug |
FR2872116B1 (fr) * | 2004-06-29 | 2006-10-20 | Michelin Soc Tech | Passage de roue de vehicule automobile comprenant un circuit electrique et ensemble d'un passage de roue et de moyens d'alimentation |
WO2006038557A1 (ja) * | 2004-10-01 | 2006-04-13 | Murata Manufacturing Co., Ltd. | タイヤ空気圧モニタ装置 |
JPWO2006051590A1 (ja) * | 2004-11-11 | 2008-05-29 | 株式会社日立製作所 | 回転検出装置 |
JP4498104B2 (ja) * | 2004-11-16 | 2010-07-07 | キヤノン株式会社 | 監視装置、その制御方法、およびプログラム |
US7466240B2 (en) * | 2005-01-25 | 2008-12-16 | The Retents Of The University Of California | Wireless sensing node powered by energy conversion from sensed system |
JP2006242707A (ja) * | 2005-03-02 | 2006-09-14 | Denso Corp | タイヤ空気圧検出装置 |
DE102005032145A1 (de) * | 2005-07-07 | 2007-01-11 | Zf Friedrichshafen Ag | Gelenk für ein Kraftfahrzeug |
JP2007145262A (ja) * | 2005-11-30 | 2007-06-14 | Pacific Ind Co Ltd | タイヤ状態監視システム |
FR2896726B1 (fr) * | 2006-01-31 | 2010-06-04 | Michelin Soc Tech | Pneumatique, roue ou ensemble pneumatique et roue equipes d'un dispositif de comptage du nombre de rotations. |
US8652040B2 (en) | 2006-12-19 | 2014-02-18 | Valencell, Inc. | Telemetric apparatus for health and environmental monitoring |
JP4591503B2 (ja) * | 2007-12-26 | 2010-12-01 | 日産自動車株式会社 | 空気圧監視装置 |
US7938074B2 (en) * | 2009-01-22 | 2011-05-10 | Deere & Company | Pressure sensing system for a planter |
GB2498884B (en) | 2009-04-16 | 2014-02-12 | Panoramic Power Ltd | Apparatus and methods thereof for power consumption measurement at circuit breaker points |
US9134348B2 (en) | 2009-04-16 | 2015-09-15 | Panoramic Power Ltd. | Distributed electricity metering system |
US9678114B2 (en) | 2009-04-16 | 2017-06-13 | Panoramic Power Ltd. | Apparatus and methods thereof for error correction in split core current transformers |
JP5424731B2 (ja) * | 2009-06-15 | 2014-02-26 | Ntn株式会社 | タイヤ空気圧監視システム |
US20110029156A1 (en) * | 2009-07-31 | 2011-02-03 | Gm Global Technology Operations, Inc. | Wireless sensor system for a motor vehicle |
KR101059657B1 (ko) * | 2009-10-07 | 2011-08-25 | 삼성전기주식회사 | 무선 전력 송수신 장치 및 그 방법 |
US8560151B2 (en) * | 2010-05-11 | 2013-10-15 | Cartasite, Inc. | Dynamic monitoring of mobile railway car undercarriage |
CN102338642A (zh) * | 2010-07-27 | 2012-02-01 | 昆达电脑科技(昆山)有限公司 | 无线车速感测装置及方法 |
CN102053016B (zh) * | 2010-11-08 | 2013-07-17 | 江苏大学 | 旋转机械滚动轴承的无线振动监测系统 |
CN102407742B (zh) * | 2011-09-29 | 2014-01-15 | 华南理工大学 | 基于rfid自供能的车联网轮载式传感系统及方法 |
CN102680123A (zh) * | 2012-05-30 | 2012-09-19 | 西安交通大学 | 一种保持架温度及应力在线监测系统及其方法 |
US9849893B2 (en) * | 2013-03-27 | 2017-12-26 | Aktiebolaget Skf | Hub unit |
US10378965B2 (en) | 2013-09-11 | 2019-08-13 | 3M Innovative Properties Company | Systems and methods for monitoring temperature of electrical conductor |
CN104236727A (zh) * | 2013-12-02 | 2014-12-24 | 鸿富锦精密工业(武汉)有限公司 | 容置箱控制系统及方法 |
US10243724B2 (en) * | 2014-02-12 | 2019-03-26 | Infineon Technologies Ag | Sensor subassembly and method for sending a data signal |
JP2016022889A (ja) * | 2014-07-23 | 2016-02-08 | 太平洋工業株式会社 | タイヤ状態監視装置 |
EP3192715B1 (en) * | 2014-09-12 | 2021-03-17 | NTN Corporation | Bearing abnormality sensing system for railway vehicle |
CN105490393A (zh) * | 2014-09-19 | 2016-04-13 | 上海海拉电子有限公司 | 一种车用无线传输系统及传输方法 |
US9683895B2 (en) * | 2014-12-29 | 2017-06-20 | Bosch Automotive Service Solutions Inc. | Non-contact infrared temperature sensor with wireless functionality |
US10024885B2 (en) | 2015-07-28 | 2018-07-17 | Panoramic Power Ltd. | Thermal management of self-powered power sensors |
US9891252B2 (en) | 2015-07-28 | 2018-02-13 | Panoramic Power Ltd. | Thermal management of self-powered power sensors |
JP6484156B2 (ja) * | 2015-10-08 | 2019-03-13 | 川崎重工業株式会社 | 鉄道車両用台車の無線通信機能付き温度センサユニット |
US9815342B2 (en) | 2015-11-20 | 2017-11-14 | Ford Global Technologies, Llc | Vehicle positioning to charge TPMS batteries |
JP6707866B2 (ja) | 2015-12-04 | 2020-06-10 | 日本精工株式会社 | 車輪支持用転がり軸受ユニット |
US10275477B2 (en) * | 2016-01-25 | 2019-04-30 | International Business Machines Corporation | Processing path determination |
US10093349B2 (en) * | 2016-03-02 | 2018-10-09 | Trw Automotive U.S. Llc | Monitoring of an electric motor in an electric power steering assembly |
EP3396325A1 (de) * | 2017-04-25 | 2018-10-31 | Siemens Aktiengesellschaft | Vorrichtung zum überwachen einer maschine oder eines aggregates |
EP3658923A4 (en) | 2017-07-26 | 2021-04-21 | Panoramic Power Ltd. | SYSTEM AND METHOD FOR TIME SYNCHRONIZATION OF A SELF-POWERED POWER SENSOR |
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Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4749993A (en) * | 1985-02-01 | 1988-06-07 | Dr. Ing. H.C.F. Porsche Aktiengesellschaft | Arrangement for the wireless transmission of measuring signals |
JPS6460118A (en) * | 1987-08-31 | 1989-03-07 | Hochiki Co | Radio transmission equipment |
JPH04133808A (ja) * | 1990-09-26 | 1992-05-07 | Bridgestone Corp | タイヤ内部監視装置 |
US5231391A (en) | 1990-11-30 | 1993-07-27 | Skf France | Passive pick-up device for monitoring the state of the tire of a vehicle wheel and measuring the rotation characteristics of the wheel |
JPH095178A (ja) * | 1995-06-22 | 1997-01-10 | Hitachi Ltd | トルク検出システム |
US5661651A (en) | 1995-03-31 | 1997-08-26 | Prince Corporation | Wireless vehicle parameter monitoring system |
JPH1019710A (ja) | 1996-07-02 | 1998-01-23 | Yokohama Rubber Co Ltd:The | 車両のタイヤ内空気圧モニター装置 |
JPH11238193A (ja) * | 1998-02-19 | 1999-08-31 | Matsue Anzen Shokai:Kk | データの通信方法と装置 |
JP2001151090A (ja) * | 1999-11-30 | 2001-06-05 | Ntn Corp | アンチロックブレーキ装置 |
JP2001349794A (ja) * | 2000-06-12 | 2001-12-21 | Dainippon Printing Co Ltd | 信号伝送装置及び圧力検出ロールを用いた圧力検出システム |
Family Cites Families (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3723966A (en) * | 1970-09-14 | 1973-03-27 | Bendix Corp | Interrogating tire pressure indicator |
JPS5639601A (en) * | 1979-09-06 | 1981-04-15 | Mitsubishi Electric Corp | Antenna for solar generation of electricity |
US4263579A (en) * | 1979-11-15 | 1981-04-21 | Cgs Research And Development, Inc. | Tire pressure alarm |
US4609905A (en) * | 1984-05-11 | 1986-09-02 | Eaton Corporation | Tire condition monitoring system |
US4966034A (en) * | 1988-04-28 | 1990-10-30 | Schrader Automotive, Inc. | On-board tire pressure indicating system performing temperature-compensated pressure measurement, and pressure measurement circuitry thereof |
JP2757267B2 (ja) | 1990-07-06 | 1998-05-25 | 山武ハネウエル株式会社 | 流速計 |
DE4033053C1 (ja) * | 1990-10-18 | 1992-03-05 | Hottinger Baldwin Messtechnik Gmbh, 6100 Darmstadt, De | |
JPH0542868A (ja) * | 1991-08-13 | 1993-02-23 | Zexel Corp | ブレーキのフエード検出装置 |
JPH0676193A (ja) * | 1992-06-10 | 1994-03-18 | Seiko Epson Corp | 真空チャンバー内の情報計測方法およびその装置 |
JPH0810232A (ja) | 1994-06-29 | 1996-01-16 | Casio Comput Co Ltd | 生体情報処理システム |
JPH1010141A (ja) | 1996-04-26 | 1998-01-16 | Toyota Motor Corp | 磁気式回転検出装置 |
WO1997045277A1 (de) * | 1996-05-29 | 1997-12-04 | Bartels Mangold Electronic Gmbh | Vorrichtung zur drahtlosen übertragung aus bewegten teilen |
BR0008160A (pt) * | 1999-02-11 | 2002-05-28 | Emtop Ltd | Transmissão de sinal em um sistema de leitura de pressão pneumática |
EP1187731B1 (en) | 1999-05-17 | 2003-11-12 | The Goodyear Tire & Rubber Company | Rf transponder comprising a power-on reset circuit and a method of controlling operation of a transponder of such kind |
US6980084B1 (en) | 1999-05-17 | 2005-12-27 | The Goodyear Tire & Rubber Company | Power-on reset for transponder |
JP2002055113A (ja) * | 2000-08-09 | 2002-02-20 | Ntn Corp | 車輪用軸受装置 |
US6535116B1 (en) * | 2000-08-17 | 2003-03-18 | Joe Huayue Zhou | Wireless vehicle monitoring system |
FR2817509B1 (fr) * | 2000-12-05 | 2003-08-29 | Trw France | Systeme de mesure de parametres de roue et detecteur de mesure pour un tel systeme |
JP2003058976A (ja) | 2001-06-04 | 2003-02-28 | Nsk Ltd | ワイヤレスセンサ、転がり軸受装置、管理装置、及び監視装置 |
JP2002364661A (ja) | 2001-06-11 | 2002-12-18 | Nsk Ltd | 軸受の予圧測定方法及びスピンドルユニット |
US7034711B2 (en) | 2001-08-07 | 2006-04-25 | Nsk Ltd. | Wireless sensor, rolling bearing with sensor, management apparatus and monitoring system |
US6696935B2 (en) | 2001-09-10 | 2004-02-24 | Gentex Corporation | Tire monitoring system |
JP2003146196A (ja) | 2001-11-12 | 2003-05-21 | Nsk Ltd | 車輪用回転速度検出装置 |
EP1329727A1 (en) | 2001-10-18 | 2003-07-23 | Nsk Ltd | Rotation-speed sensor device |
FR2832272B1 (fr) * | 2001-11-09 | 2004-09-24 | Commissariat Energie Atomique | Dispositif passif d'accroissement de l'efficacite de transmission de systemes radiofrequence |
JP2003151063A (ja) | 2001-11-16 | 2003-05-23 | Honda Motor Co Ltd | タイヤ監視システム |
JP2003151064A (ja) | 2001-11-16 | 2003-05-23 | Honda Motor Co Ltd | タイヤセンサユニット |
JP2003187368A (ja) | 2001-12-14 | 2003-07-04 | Ntn Corp | 車両用軸受装置 |
US7018106B2 (en) | 2001-12-14 | 2006-03-28 | Ntn Corporation | Vehicle mounted bearing assembly |
US6838985B2 (en) * | 2002-03-25 | 2005-01-04 | Lear Corporation | System and method for remote tire pressure monitoring with low frequency initiation |
US20040150516A1 (en) * | 2003-02-05 | 2004-08-05 | Delphi Technologies, Inc. | Wireless wheel speed sensor system |
US6958685B2 (en) | 2003-08-01 | 2005-10-25 | Siemens Vdo Automotive Corporation | Asynchronous localization signals for tire pressure monitoring system |
US7205885B2 (en) * | 2003-08-25 | 2007-04-17 | Siemens Vdo Automotive Corporation | Tire sensor communication system |
US7104438B2 (en) | 2003-10-22 | 2006-09-12 | The Goodyear Tire & Rubber Company | Method of integrating tire identification into a vehicle information system |
US7148793B2 (en) | 2004-01-30 | 2006-12-12 | Trw Automotive Us Llc | Tire parameter sensing system having auto-location feature and associated method |
US7580696B2 (en) * | 2004-12-14 | 2009-08-25 | Lear Corporation | Self-aligning vehicular transmitter system |
-
2003
- 2003-08-29 JP JP2003306181A patent/JP4963006B2/ja not_active Expired - Lifetime
- 2003-09-08 CN CNB038212897A patent/CN100416617C/zh not_active Expired - Fee Related
- 2003-09-08 WO PCT/JP2003/011459 patent/WO2004023422A1/ja active Application Filing
- 2003-09-08 EP EP03794288A patent/EP1542190B1/en not_active Expired - Fee Related
- 2003-09-08 US US10/526,903 patent/US7561035B2/en not_active Expired - Fee Related
- 2003-09-08 AU AU2003262003A patent/AU2003262003A1/en not_active Abandoned
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4749993A (en) * | 1985-02-01 | 1988-06-07 | Dr. Ing. H.C.F. Porsche Aktiengesellschaft | Arrangement for the wireless transmission of measuring signals |
JPS6460118A (en) * | 1987-08-31 | 1989-03-07 | Hochiki Co | Radio transmission equipment |
JPH04133808A (ja) * | 1990-09-26 | 1992-05-07 | Bridgestone Corp | タイヤ内部監視装置 |
US5231391A (en) | 1990-11-30 | 1993-07-27 | Skf France | Passive pick-up device for monitoring the state of the tire of a vehicle wheel and measuring the rotation characteristics of the wheel |
US5661651A (en) | 1995-03-31 | 1997-08-26 | Prince Corporation | Wireless vehicle parameter monitoring system |
JPH095178A (ja) * | 1995-06-22 | 1997-01-10 | Hitachi Ltd | トルク検出システム |
JPH1019710A (ja) | 1996-07-02 | 1998-01-23 | Yokohama Rubber Co Ltd:The | 車両のタイヤ内空気圧モニター装置 |
JPH11238193A (ja) * | 1998-02-19 | 1999-08-31 | Matsue Anzen Shokai:Kk | データの通信方法と装置 |
JP2001151090A (ja) * | 1999-11-30 | 2001-06-05 | Ntn Corp | アンチロックブレーキ装置 |
JP2001349794A (ja) * | 2000-06-12 | 2001-12-21 | Dainippon Printing Co Ltd | 信号伝送装置及び圧力検出ロールを用いた圧力検出システム |
Non-Patent Citations (1)
Title |
---|
See also references of EP1542190A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105763158A (zh) * | 2016-04-26 | 2016-07-13 | 广东大粤新能源科技股份有限公司 | 通过手机监控光伏电站的方法 |
Also Published As
Publication number | Publication date |
---|---|
US20050258950A1 (en) | 2005-11-24 |
CN100416617C (zh) | 2008-09-03 |
JP4963006B2 (ja) | 2012-06-27 |
CN1682257A (zh) | 2005-10-12 |
EP1542190A1 (en) | 2005-06-15 |
US7561035B2 (en) | 2009-07-14 |
EP1542190B1 (en) | 2011-06-08 |
AU2003262003A1 (en) | 2004-03-29 |
EP1542190A4 (en) | 2010-03-17 |
JP2004133911A (ja) | 2004-04-30 |
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