WO2007000494A1 - Generation of electric supply power for wireless measuring or monitoring systems of moving objects - Google Patents

Generation of electric supply power for wireless measuring or monitoring systems of moving objects Download PDF

Info

Publication number
WO2007000494A1
WO2007000494A1 PCT/FI2006/050283 FI2006050283W WO2007000494A1 WO 2007000494 A1 WO2007000494 A1 WO 2007000494A1 FI 2006050283 W FI2006050283 W FI 2006050283W WO 2007000494 A1 WO2007000494 A1 WO 2007000494A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric supply
supply power
measuring
monitoring systems
generation
Prior art date
Application number
PCT/FI2006/050283
Other languages
French (fr)
Inventor
Kimmo Jokelainen
Aila Petäjäjärvi
Original Assignee
Kimmo Jokelainen
Petaejaejaervi Aila
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FI20050686A priority Critical patent/FI118838B/en
Priority to FI20050686 priority
Application filed by Kimmo Jokelainen, Petaejaejaervi Aila filed Critical Kimmo Jokelainen
Publication of WO2007000494A1 publication Critical patent/WO2007000494A1/en

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18Structural association of electric generators with mechanical driving motors, e.g. turbine
    • H02K7/1807Rotary generators
    • H02K7/1846Rotary generators structurally associated with wheels or associated parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00Devices 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, of tanks; Tyre cooling arrangements
    • B60C23/02Signalling devices actuated by tyre pressure
    • B60C23/04Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408Signalling 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
    • B60C23/041Means for supplying power to the signal- transmitting means on the wheel
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00Devices 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, of tanks; Tyre cooling arrangements
    • B60C23/02Signalling devices actuated by tyre pressure
    • B60C23/04Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408Signalling 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
    • B60C23/041Means for supplying power to the signal- transmitting means on the wheel
    • B60C23/0413Wireless charging of active radio frequency circuits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/004Electro-dynamic machines, e.g. motors, generators, actuators
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment

Abstract

The invention relates to a method for generating the electric supply power for wireless measuring or monitoring systems of moving objects. In a method of the invention for generating the electric supply power for wireless monitoring systems of moving objects, the essential components are a magnetic field establishing, moving or stationary permanent magnet or other magnetic element (1), a moving or stationary wire loop package (3), a sensor coupling (4), power supply electronics (5), a radio unit (6). The electric supply power generating method of the invention is integrated in an apparatus, a device or a mechanical element (2, 7, 10, 11). The measuring or monitoring system according to the method is considerably more maintenance-free and economical than solutions implemented with traditional methods.

Description

Generation of electric supply power for wireless measuring or monitoring systems of moving objects

This invention relates to the generation of electric supply power for wireless measuring systems, said system comprising an induction loop, a permanent magnet element, a measuring sensor coupling, electronics required by the electric supply power, and necessary radio electronics.

In prior known wireless measuring and condition monitoring systems, the equipment comprises measuring systems made up from sensors present in the proximity of objects to be measured and receiving and analyzing devices external of an object to be measured. In general, sensor units employed in such equipment are provided with a battery, an accumulator or some other power storing voltage supply, or the operating voltage for a sensor unit is derived from the electrical system of an object to be measured. Measuring data is transmitted by the sensor unit typically by way of radio to the receiving and analyzing unit. The method is known, for example, from publication number US 2003/0030565 Al, patent applications 881763 and EP 1,293,766 Al.

Prior known are also wireless condition monitoring systems, wherein the sensor is a piezoelectric component, both a measurable quantity and the energy required by a radio transmitter being produced by its mechanical deformation through a piezoelectric effect.

An accumulator, battery and other voltage supply, commonly used in prior known measuring and condition monitoring systems, demand regular maintenance. Because of its operating principle, a piezoelectric sensor only enables measurement of such objects in which the sensor is subjected to a mechanical sensor-deforming force which, by means of a piezoelectric effect, generates both a measuring quantity and an operating voltage for processing and transmitting a measuring signal to a receiving and analyzing unit. A method like that is disclosed in patent EP 1,022,702 A2.

Prior known are also wireless condition monitoring systems, wherein the operating voltage required by a measuring sensor coupling and a transmitter unit is generated by using a temperature responsive battery. In prior known systems, the temperature responsive battery has an insulating material of low melting temperature positioned to insulate the battery's electrolytes. As the insulating material melts, a conductivity is created between the electrodes and a required operating voltage is generated. In prior art systems, this so-called triggering temperature can be set by selecting a desired melting temperature for the insulating material. Such prior known condition monitoring systems typically produce an alarm as a given threshold temperature is exceeded, thereby inhibiting major damage which would be caused, for example, by the breakdown of an overheated machine component. The method is known from patent EP 1,256,792 A2.

Prior known systems include also those intended for monitoring anti-blocking vehicular brake systems and, for example, for measuring rotational speeds. These systems are known to exist in wireless designs and those based on wired sensor coupling. Typically, these systems take up their operating voltage from a vehicular power supply or other battery. The method is known, among others, from patent EP 1,321,685 A2.

Applications described in the cited references are based on traditional voltage supply systems or on a piezoelectric effect.

An advantage gained by a voltage generating method according to the invention is to prolong the maintenance cycle of wireless measuring systems and to eliminate the need to replace a separate battery or accumulator in a sensor and transmitter unit.

In addition, the arrangement of the invention makes it possible to reduce the amount of wiring involved in a measuring system.

Another advantage of the invention is that an apparatus of the invention can be conveniently installed as retrofitting in pre-existing objects which require measuring or monitoring. Another advantage of the invention is that a measuring or monitoring system of the invention is electrically separated from the power supply system of an object to be measured or monitored.

Another advantage of the invention is that the operating voltage for a measuring or monitoring system is always available while an object to be measured or monitored is in working motion, for example during rotation of a paper machine roll, which enables a continuous collection of measuring or monitoring data.

Another advantage of the invention is that a sensor coupling unit can be attached directly to an object to be monitored or measured, whereby a desired signal is directly measured by the system and an interference effect caused by surrounding factors is minimized, for example the sound of machine bearings is picked up directly from a rotating object, not from a machine body in which the sounds or vibrations of all bearings and other machine elements are aggregated within a single measuring signal.

Another advantage of the invention is that a signal measurable directly from a rotating object can be temperature, acceleration, rotational speed, and a chemical or physical quantity.

Another advantage of the invention is that a method of the invention can be applied for measuring and monitoring hard-to-reach objects, which used to be considered non-viable in terms of costs, such as fitted within a gearbox or mounted on a gear assembly.

Another advantage of the invention is that a method of the invention can be applied for the safety-promoting monitoring of moving vehicles such as, for example, for measuring and monitoring the bearings of a train or the air pressure of vehicular tires.

Another advantage of the invention is that a method of the invention can be applied for tracking the vibrations of rails or, for example, for other acoustic measuring or other surveillance. Another advantage of the invention is that a method of the invention can be applied for objects to be measured or monitored, which do not have their own electrical system.

Another advantage of the invention is that a measuring or monitoring system can be preferably designed to be readily commutable from a measured or monitored object to another, which also enables sampling-based measuring or monitoring and thereby saves costs.

Another advantage of the invention is that a measuring or monitoring system is preferably implementable, such that the sensor member of a measuring unit is able to function as a repeater, whereby measurements of various parts in a large object to be measured and monitored objects can be linked in series, which enables bringing the data of a remote sensor unit by way of one or several repeater stations to a receiving unit, even though the transmitting sensor unit does not have a transmission performance which alone would be sufficient.

Another advantage of the invention is that the use of a measuring or monitoring system of the invention makes it possible to take preventive measures against major malfunctions caused by defected machine components and to thereby accomplish significant cost savings before the ultimate mechanical breakdown.

The invention relies on a basic concept that the measuring or monitoring system of the invention is electrically separate from the power supply system of an object to be measured or monitored and uses the kinetic energy of an object to be measured or monitored to generate, according to the induction principle, at least some of the electric supply power required by the system.

These objectives can be accomplished according to the invention by generating the energy required by a sensor and transmitter unit by means of a moving object on the basis of electromagnetic induction. This is effected by making induction loops on a moving or stationary object and by mounting magnetic elements on a moving or stationary counterpart. After activation of the apparatus, the electric supply power for a sensor and transmitter unit is generated according to induction principle by a relative movement between the magnetic field created by a permanent magnet element and the wire loop. The electric supply power producing apparatus as well as the sensor and transmitter unit and other required electronics are preferably present in the form of being structurally integrated in a mechanism or device to be measured or monitored or temporarily mounted on an object to be measured or monitored.

Notwithstanding what has been mentioned above, the system may include an accumulator, a battery or a capacitor for storing energy. There may be several magnetic elements or wire loops or windings and, besides, the magnetic element may even be a part of the actual object to be measured. The measuring or monitoring system described in the invention can be present in the form of being integrated for example in a bearing or some other device or segment of a device to be measured or monitored.

More specifically, the inventive voltage generating method is characterized in that the system comprises a permanent magnet or another magnetic element 1, a wire loop 3, a sensor coupling 4, power supply electronics 5 and a radio unit 6 connected with a moving or stationary apparatus, device or mechanical component 2, 7, 10, 11, as well as that the measuring or monitoring system of the invention is electrically separate from the power supply system of an object to be measured or monitored.

The invention will now be described in detail. In the description, reference is made to the accompanying drawings, in which

fig. 1 shows by way of example an implementation for a voltage generating method of the invention,

fig. 2 shows by way of example another voltage generating method.

Fig. 1 depicts a voltage generating method according to the invention. A permanent magnet element 1 is attached by a fastening means, not shown in the figure, to a body 2 of the object to be measured or monitored, a wire loop 3, a sensor coupling unit 4, electronics 5 needed for generating electric supply power, as well as a radio unit 6 are integrated in their mounting, which is mounted on a shaft 7 of the apparatus. After the apparatus or machine is activated, the induction loop secured to a rotating shaft travels past the permanent magnet element attached to the body of the object to be measured or monitored and past a magnetic field created thereby, the loop being induced, according to the induction principle, with a voltage which can be worked on to provide the electric supply power required by the measuring or monitoring system.

In the exemplary voltage generating method shown in fig. 2, a permanent magnet element 1 is attached to a body of the object to be measured or monitored, not shown in the figure. An induction loop 3 and a sensor coupling 4, electronics 5 needed for producing electric supply power, and a radio unit 6 are integrated in their mounting 9, which is attached to a component 11 reciprocating along a guide bar 10 of the machine. The wire loop is induced, according to the induction principle, with an operating voltage required by the measuring system as said loop travels within a magnetic field created by the permanent magnet element.

The method can be applied in objects such as, for example, bearings, gears, axles, wheels, guides, ball screws, pistons, train gears or other stationary, rotating or reciprocating elements.

A voltage generating method of the invention or a portion thereof can be preferably implemented by the application of silk screen, ceramic, circuit board, polyimide, laser sintering, LTCC, HTCC or other appropriate technology. The induction loop member described in the invention can be preferably implemented by a bobbin thread, a silk screen method, thin or thick film techniques. In addition, it can be preferably implemented in the form of a more or less flat member on a straight, curved or otherwise contoured surface.

The above description has dealt with preferred embodiments for a voltage generating method of the invention. The invention is not limited to just described solutions, but the inventive concept can be applied in a plurality of ways within limits established by the attached claims.

Claims

Claims
1. A method for the generation of electric supply power for wireless measuring or monitoring systems of moving objects, characterized in that it comprises a permanent magnet or another magnetic element (1), a wire loop (3), a sensor coupling (4), power supply electronics (5) and a radio unit (6) connected with a moving or stationary apparatus, device or mechanical component (2, 7, 10, 11).
2. A method as set forth in claim 1 for the generation of electric supply power for wireless measuring or monitoring systems of moving objects, characterized in that the measuring or monitoring system of the invention is electrically separate from a possible power supply system of the object to be measured or monitored.
3. A method as set forth in claim 1 for the generation of electric supply power for wireless measuring or monitoring systems of moving objects, characterized in that the system has its magnetic field, which can be moving or stationary, established by means of the permanent magnet or some other magnetic element (D-
4. A method as set forth in claim 1 for the generation of electric supply power for wireless measuring or monitoring systems of moving objects, characterized in that the wire loop (3), which can be moving or stationary, constitutes an induction loop for inducing therein the voltage of electric supply power.
5. A method as set forth in claim 3-4 for the generation of electric supply power for wireless measuring or monitoring systems of moving objects, characterized in that the permanent magnet element and the wire loop are moving relative to each other.
6. A method as set forth in claim 1-5 for the generation of electric supply power for wireless measuring or monitoring systems of moving objects, characterized in that it is mounted in the form of retrofitting on an object to be measured or monitored.
7. A method as set forth in claims 1-5 for the generation of electric supply power for wireless measuring or monitoring systems of moving objects, characterized in that it is integrated in a bearing or some other component of the object to be measured or monitored.
PCT/FI2006/050283 2005-06-28 2006-06-27 Generation of electric supply power for wireless measuring or monitoring systems of moving objects WO2007000494A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20050686A FI118838B (en) 2005-06-28 2005-06-28 Generating power for wireless measuring or monitoring systems for moving objects
FI20050686 2005-06-28

Publications (1)

Publication Number Publication Date
WO2007000494A1 true WO2007000494A1 (en) 2007-01-04

Family

ID=34778398

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2006/050283 WO2007000494A1 (en) 2005-06-28 2006-06-27 Generation of electric supply power for wireless measuring or monitoring systems of moving objects

Country Status (2)

Country Link
FI (1) FI118838B (en)
WO (1) WO2007000494A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007014016A1 (en) * 2007-03-23 2008-09-25 Schaeffler Kg Bearing for supporting a body rotatable about an axis with a cover body
EP2073343A1 (en) * 2007-12-21 2009-06-24 Sick Ag Sensor
WO2014186861A1 (en) * 2013-05-22 2014-11-27 Honeywell Asca Inc. Scanning sensor arrangement for paper machines or other systems

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020050754A1 (en) * 2000-10-27 2002-05-02 Ntn Corporation Bearing with noncontact signal transfer mechanism
US6421600B1 (en) * 1994-05-05 2002-07-16 H. R. Ross Industries, Inc. Roadway-powered electric vehicle system having automatic guidance and demand-based dispatch features
US20030000615A1 (en) * 1998-03-09 2003-01-02 Pirelli Pneumatici S.P.A. Method for generating an electric current within a tyre
JP2003151063A (en) * 2001-11-16 2003-05-23 Honda Motor Co Ltd Tire monitoring system
US6800958B1 (en) * 1999-10-01 2004-10-05 Kiekert Ag Wireless data and energy transmission device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6421600B1 (en) * 1994-05-05 2002-07-16 H. R. Ross Industries, Inc. Roadway-powered electric vehicle system having automatic guidance and demand-based dispatch features
US20030000615A1 (en) * 1998-03-09 2003-01-02 Pirelli Pneumatici S.P.A. Method for generating an electric current within a tyre
US6800958B1 (en) * 1999-10-01 2004-10-05 Kiekert Ag Wireless data and energy transmission device
US20020050754A1 (en) * 2000-10-27 2002-05-02 Ntn Corporation Bearing with noncontact signal transfer mechanism
JP2003151063A (en) * 2001-11-16 2003-05-23 Honda Motor Co Ltd Tire monitoring system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007014016A1 (en) * 2007-03-23 2008-09-25 Schaeffler Kg Bearing for supporting a body rotatable about an axis with a cover body
EP2073343A1 (en) * 2007-12-21 2009-06-24 Sick Ag Sensor
WO2014186861A1 (en) * 2013-05-22 2014-11-27 Honeywell Asca Inc. Scanning sensor arrangement for paper machines or other systems
CN105492873A (en) * 2013-05-22 2016-04-13 霍尼韦尔有限公司 Scanning sensor arrangement for paper machines or other systems
CN105492873B (en) * 2013-05-22 2019-12-24 霍尼韦尔有限公司 Scanning sensor arrangement for paper machine or other system

Also Published As

Publication number Publication date
FI118838B1 (en)
FI20050686A0 (en) 2005-06-28
FI20050686D0 (en)
FI20050686A (en) 2006-12-29
FI118838B (en) 2008-03-31

Similar Documents

Publication Publication Date Title
US8082115B2 (en) Data acquisition system for condition-based maintenance
JP2017502639A (en) System and method for detecting operational anomalies in train formation and railway vehicles
EP1203960B1 (en) Rolling bearing device and ring with sensor for the rolling bearing device
JP5026274B2 (en) Energy recovery device with adjustable resonance frequency
AU2017100493A4 (en) An Idler, a Method for Monitoring a Plurality of Idlers, and a Conveyor System
DE60310104T2 (en) POWER GENERATOR
JP4057851B2 (en) Monitoring device for sliding contact member of rotating electrical machine
EP2250682B1 (en) Adjustable resonance frequency vibration power harvester
US20140025256A1 (en) Dynamic monitoring of mobile railway car undercarriage
AU2010212250B2 (en) Radar vehicle detection system
US20140097709A1 (en) Power generation switch
US9365223B2 (en) System and method for monitoring railcar performance
CN100565167C (en) The motion-sensing that is used for tire pressure monitoring
CA2364786C (en) A railway axle hub unit
ES2603839T3 (en) Device, system and method for real-time monitoring of overhead power lines
EP1977108B1 (en) An epicyclic gearbox and a wind turbine comprising at least one epicyclic gearbox
US8866316B2 (en) Tunable vibration energy harvester and method
CN101784804B (en) Rotary transducer with monitoring of bearing wear and method therefor
CN102645292B (en) Piezoelectric vibration type force sensor and robot apparatus
EP2493706B1 (en) Method for generating electric energy in a tyre
CN102713554B (en) The apparatus for diagnosis of abnormality of rolling bearing, wind power generation plant and abnormity diagnostic system
CN105899927B (en) Vibration machine
CN101022994B (en) Helicopter vibration control system and rotary force generator for canceling vibrations
US9958052B2 (en) System having a gear unit
US7307517B2 (en) Wireless torque sensor

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 06764522

Country of ref document: EP

Kind code of ref document: A1