FI118838B - Generating power for wireless measuring or monitoring systems for moving objects - Google Patents

Description

1 118838

The present invention relates to the generation of power for wireless measuring or monitoring systems 5, which comprises an induction loop, a permanent magnet element, a measurement sensor, the required electronics for the power and the required radioelectronics.

In the known wireless measuring and condition monitoring systems, the equipment consists of measuring systems consisting of sensors in the vicinity of the subject to be measured and receiving and analyzing devices located outside the subject. In general, the sensor units used in these systems are provided with a battery, a battery, or some other power supply that stores electricity, or the operating voltage of the sensor unit is obtained from the electrical system of the object being measured. The sensor unit transmits 15 measurement data typically by radio to the receiving and analyzing unit. For example, the method is known from US 2003/0030565 A1, from patent applications 881763 and EP 1 293 766 A1.

Also known are wireless condition monitoring systems in which the sensor is a piezoelectric component whose mechanical deformation produces a piezoelectric: V phenomenon for both the measurable quantity and the energy required by the radio transmitter.

······················································································· ♦ :♦::::::::::::: :♦::::::::::::::::: usein: Regular maintenance of commonly used battery, battery and 25 other power supplies in known measurement and condition monitoring systems The piezoelectric ··· sensor, due to its principle of operation, allows only the measurement of · · · · objects subjected to mechanical sensing deformation of the sensor: ***: which, through the piezoelectric phenomenon, produces both a measuring quantity and an operating voltage. processing and sending the measurement signal to the receiving and analyzing unit- *.! 30 pearls. Such a method is disclosed in EP 1 022 702 A2.

Wireless condition monitoring systems are also known in which the operating voltage required by the measuring sensor and transmitter is generated using a temperature-responsive battery. In prior art systems, a low-melting insulating material in a temperature-responsive battery 35 is positioned to insulate the battery 2 118838 electrolytes. When the insulation material melts, the conductivity between the electrodes is generated and the required operating voltage is generated. In known systems, this so-called trigger temperature can be adjusted by selecting the melting point of the dielectric material as desired. Such known condition monitoring systems typically alert someone to exceeding a certain threshold temperature and thereby prevent greater damage, for example, from the breakage of an overheated machine part. The process is known from EP 1 256 792 A2.

Systems are also known for monitoring the anti-lock braking systems used in vehicles and for measuring speeds, for example. These systems are known to exist as wireless and based on wired sensing. Typically, these systems are powered by the vehicle's power supply or other battery. The process is known, inter alia, from EP 1 321 685 A1.

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The applications disclosed in the references are based on conventional voltage supply systems or on the piezoelectric phenomenon.

The advantage of the voltage generating method of the invention is to extend the service interval of the wire-20 tower measurement systems and eliminate the need for a separate battery or battery replacement: V: need for sensor and transmitter unit.

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In addition, the arrangement according to the invention can reduce the wiring associated with the measuring system::::

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A further advantage of the invention is that the apparatus according to the invention can be advantageously; *.> Φ retrofitted to existing applications requiring measurement or monitoring. * ··. teisiin.

A further advantage of the invention is that the measuring or monitoring system according to the invention is electrically separate from the power supply system of the object to be measured or monitored.

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A further advantage of the invention is that the operating voltage 35 of the measuring or monitoring system is always available when the object to be measured or monitored performs a work movement, for example, while the roll of the paper machine rotates, allowing continuous collection of measurement or monitoring data.

A further advantage of the invention is that the sensor unit can be mounted directly to a monitoring or measuring object, whereby the system directly measures the desired signal and the interference effect of environmental factors is minimized, for example by immediately listening the machine bearing ring from the rotating object. organ sounds or vibrations are added to the same measurement signal.

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A further advantage of the invention is that the signal measured directly from the rotating object may be temperature, acceleration, rotational speed and chemical or physical quantity.

A further advantage of the invention is that the method according to the invention can be applied to difficult measuring and monitoring objects previously considered to be unprofitable, such as mounted in a gearbox or mounted in a rack.

A further advantage of the invention is that the method according to the invention can be applied to the monitoring of safety vehicles in motion, such as the measurement and monitoring of the air pressure of rolling bearings or vehicle tires.

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A further advantage of the invention is that the method according to the invention can be applied to monitoring the vibration of the rails, or, for example, to other acoustic measurement 25 or other monitoring.

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A further advantage of the invention is that the method according to the invention can be applied to a subject to be measured or monitored, which does not have its own electrical system.

A further advantage of the invention is that the measuring or kneading system can be implemented advantageously so that it can be easily moved from one measuring or monitoring object to another. also allows sampling or measurement based on sampling and thus saves costs.

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A further advantage of the invention is that the measuring or monitoring system can be advantageously implemented so that the sensor part of the measuring unit can act as a repeater, whereby the measurements and monitoring objects of different parts of a large object can be linked to a series allowing importing of distant sensor unit data even though the transmitting sensor unit alone is not capable of transmitting power.

A further advantage of the invention is that when a measuring or monitoring system according to the invention is used, it can be prevented. Damaged machine parts cause more than 10 faults and thus achieve significant cost savings before the final breakdown.

The invention is based on the basic idea that the measuring or monitoring system according to the invention is electrically separate from the electric power supply system of the object to be measured or monitored and provides at least a part of the driving energy required by the system according to the induction principle.

According to the invention, these objects can be achieved by generating, by means of a moving object, the energy required by the sensor and the transmitter unit for electromagnetic in-; A: Based on ducation. This is accomplished by making induction loops on a moving or · ·: stationary object and installing magnetic elements on a moving or ···: ***: stationary object. When the device turns on, the relative motion between the magnetic field generated by the permanent magnet • · * and the wire loop • · * 25 generates, in accordance with the induction principle, operation for the electrical sensor and transmitter unit.

• * · The power generating equipment and the sensor and transmitter unit and other required electronics are typically integrated with the equipment being measured or monitored or. the structure of the device or temporarily attached to the device being measured or monitored. to.

30 • • · **; · * Notwithstanding the above, the system may include a battery, a battery or:, v a capacitor to store energy. There may be several magnetic elements and loops of wire or '· [[:: windings, and in addition, the magnetic element may itself be part of a large object. The measuring or monitoring system described in the invention may be integrated into a bearing or other device or part of the device to be measured or monitored.

More specifically, the inventive voltage generation method is characterized by what is stated in the first claim. The system includes a permanent magnet or other magnetic element 1, a wire loop 3, a sensor 4, a power supply electronics 5 and a radio unit 6 connected to a movable or immovable apparatus, device or mechanical part 2, 7,10,11 and a measuring or monitoring system according to the invention - 10 from the power supply system of the van or controlled object and the system is retrofitted to the controlled object.

The invention will now be described in detail. Referring to the accompanying drawings, in which Figure 1 illustrates, by way of example, an embodiment of a voltage generating method according to the invention, Figure 2 illustrates another voltage generating method.

:. **: 20 M ·: V: Figure 1 shows a voltage generation method according to the invention. Durable: even the magnet 1 is attached to the body 2 of the object to be measured or monitored by a fastening member not shown, a wire loop 3, a sensor unit 4, used; electronics 5 and radio unit 6 for power generation are integrated in their base) mounted on the axis of the equipment to be measured or monitored • · · 7. When the equipment or machine starts, the induction loop on the rotating axis bypasses the permanent magnet element mounted on the body. * · *. • · · *:!: *: 30: The electric current required by the measuring or monitoring system • · · *:!: * 30 is induced in the loop according to the induction principle ···.

In the exemplary voltage generation method of Fig. 2, the permanent magnet element 1 is attached to a body of a subject to be measured or monitored, not shown. The induction loop 3 and the sensor 4, the electronics 5 for generating the drive power 35 and the radio unit 6 are integrated in their substrate 9,. 118838, which is attached to the reciprocating member 11 of the guide 10 of the machine. The operating voltage required by the measuring system is induced in the conductor silo according to the induction principle as it moves in the magnetic field formed by the permanent magnet element.

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The method can be used on objects such as bearings, gears, axles, wheels, rails, ball screws, pistons, train sprockets, or other fixed, rotating or reciprocating parts.

The voltage generating method or part thereof according to the invention may advantageously be implemented by screen printing, ceramic, circuit board, polyimide, laser sintering, LTCC, HTCC or other suitable techniques. The induction loop portion described in the invention can advantageously be implemented by winding yarn, silk screening, thin or thick film techniques. Further, it can advantageously be implemented as a substantially planar structure on a flat, curved or other shaped surface.

Preferred embodiments of the voltage generation method of the invention have been described above. The invention is not limited to the solutions just described, but the inventive idea can be applied in a number of ways within the scope of the claims. · »·» »

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Claims (3)

A method of generating operating energy for a fearless measuring and control system for moving objects using a permanent magnet (1) and an induction loop 5 (3) for generating the operating energy, characterized in that a device containing and the control system, connected as a post-installation to the object to be measured or monitored, and having an induction loop (3) for generating operating energy, and with the permanent magnet (1) the required magnetic field is generated. 10 2. A method according to claim 1, characterized in that in the process the machine sounds interference from a rotating object. Method according to claim 1 or 2, characterized in that the sensor part of the measurement and control system functions as a coating. 15 • · · i «« 4 4 4 4 4 4 4 4 4 4 · 4 4 4 4 4 4 4 4 4 4 4 444 4 4 4 4 444 • 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 • 44 4 4 4 4 4 4 4 444 4 4 4 4 4 4 4 4 4 4 4 4 4 4 · 4 # 4 4 4 4 4 4 • 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4