EP1960979A1 - Energiegenerator als alarmsensor - Google Patents
Energiegenerator als alarmsensorInfo
- Publication number
- EP1960979A1 EP1960979A1 EP06830155A EP06830155A EP1960979A1 EP 1960979 A1 EP1960979 A1 EP 1960979A1 EP 06830155 A EP06830155 A EP 06830155A EP 06830155 A EP06830155 A EP 06830155A EP 1960979 A1 EP1960979 A1 EP 1960979A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- energy
- sensor according
- measured variable
- generator
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
Definitions
- the invention relates to a sensor for monitoring a
- Measured variable with an output unit for a sensor signal where ⁇ in the sensor signal is provided from exceeding a threshold value by the measured variable for output.
- the invention further relates to a method for monitoring a measured variable using a sensor with a Ausgabeein ⁇ unit for a sensor signal, the sensor signal from over ⁇ falls below a threshold value by the measured variable to Ausga ⁇ be provided.
- Such a sensor or such a method is used in particular in the field of automation and drive technology to ⁇ - for example, in production machines, machine tools, process plants, transportation systems, logistics and building automation - are used.
- an air quality assessment As a framework for use increasingly occur a large number of measuring points and the use of hard to reach places.
- a broad use of sensory monitoring networks only makes sense at a low cost for the individual sensor.
- ABB introduces the Wireless Interface to Sensors and Actuators (WISA) concept for wireless proximity switches (see ABB, "Create New Freedoms - The New Installation Concept with Wireless Proximity Switches”). Company publication).
- the wireless sensors are powered electromagnetically by primary coils. The necessity of such Pri ⁇ märspulen around the sensor field to provide a represents JE but a high cost and is limited to use on a fixed production cells.
- the invention is based on the object of the monitoring chen ei ⁇ ner measured variable cost effective way to enable.
- the senor is an energy generator which is provided for generating energy by means of the measured variable for the energy supply of the sensor.
- This object is further achieved in a method of the type mentioned above in that a fiction, ⁇ according sensor is used as the sensor.
- the properties of the Energygenera ⁇ tors determine the type of measurement variable (or vice versa).
- the measure of the measured variable is the energy generated in the energy generator. The sensor works only if the measurand is present at all. If the measured variable and thus the generated energy exceed a defined threshold value, a signal is output. The required minimum energy was generated by the energy generator by conversion from the measurand.
- the invention can be used for all parameters that also allow power generation. Since the actual transducer is eliminated, the sensor of the invention is simpler in construction than a conventional sensor. This leads to nied ⁇ challenging costs and better miniaturization.
- the power supply is self-sufficient according to the invention, no wiring is necessary. Compared to battery-powered wireless systems, the battery replacement is eliminated. Despite autonomous energy generation from the environment, a high level of reliability is guaranteed because the size to be measured also provides the energy for the sensor. When the measured value is present, it testifies ⁇ the sensor power and can work.
- Such sensors according to the invention are therefore suitable under cost and reliability aspects for wide use or in inaccessible places.
- Target applications are, for example, MP & F (Maintenance Products & Functions) alarm sensors for monitoring fault conditions, such as a motor that is running too hot or a system that is too strong.
- the output unit for wireless communication of the sensor signal is pre ⁇ see. This can be done, for example, via radio or via optical free-space communication.
- the output unit for the visual display of the sensor signal is pre ⁇ see. This can be done, for example, by switching an electrochromic display.
- the sensor signal is an alarm signal.
- an opti cal ⁇ display may for example, merely of an optical A- consist larm Lake.
- the sensor signal has the current value of the measured variable. Not only can this indicate that the threshold to be monitored has been exceeded by the measured variable, but also its current value.
- the threshold by characteristics of the power generator is turned ⁇ .
- This can be achieved, for example, by the fact that the energy generator only generates enough energy to output the sensor signal after reaching the threshold value by the measured variable or, in fact, begins to generate energy only when the threshold value is reached by the measured variable.
- An illustrative example of the latter case can be realized, for example, by adapting band edge distances in solar cells.
- the senor has a control unit, which is provided for monitoring the overshoot of the threshold value by the measured variable.
- an averaging of the measured quantity over time intervals by means of the energy is possible.
- the time intervals are set by properties of the power generator. This means that the dynamics of the energy generator determines the averaging.
- a weakly damped energy generator can directly follow the measured variable and provides the instantaneous value of the measured variable. At lower dynamics, the energy generator acts as a low pass and an average value is measured.
- the senor has an energy store, which is provided for supplying energy to the output unit.
- the sensor signal can be output even if the energy generated by the energy generator would otherwise be insufficient to operate the output unit.
- the energy supply is charged more either by the energy generator during operation of the sensor, or the energy storage is already in commissioning of the sensor in a preloaded state.
- the threshold value is given by a specific content of the energy storage device .
- the threshold corresponds to a certain extent to a temporal integral of the measured variable, ie the sensor signal is output only when the energy cumulatively generated by the measured variable has reached the threshold value. This can be particularly advantageous if it Telindus industry, such as for example in the Lebensmit ⁇ , rather than arriving intensity on the amount of light on the radiation ⁇ , or as in nuclear risk areas on the amount of radiation.
- the invention can be used for all measured variables which also allow an energy production - eg alternating variables or gradients.
- the energy generator eg by solar cells can be realized.
- temperature sensors for example, generators using the Seebeck effect can be used.
- Sensors for mechanical vibrations often use the electrodynamic, piezoelectric or capacitive transducer principle. Radioactivity can be converted by directly knocking out electrons from, for example, the Si lattice or by conversion into thermal energy and then into electrical energy.
- Chemical sensors can use fuel cells, for example, working with methanol from the environment and this detect it, or chemical dry batteries that allow moisture detected who can ⁇ .
- 1 shows the basic structure of an advantageous embodiment of the sensor according to the invention
- 2 shows a practical realization of the invention
- the parameter M for example the temperature, mechanical see vibrations, light, radioactive radiation, chemical
- the energy generator 2 thus also serves as a transducer.
- the stored energy in the energy storage 5 is from the
- Control unit 3 monitored. Exceeds generated Ener ⁇ energy and thus the cumulative measure a threshold M, the energy contained in the energy store 5 is used, to wirelessly enforce an alarm signal from ⁇ by means of the output unit 4 or optical display, for example, by switching of an electrochromic display.
- the energy generator 2 is designed so that it converts mechanical vibra ⁇ tion energy into electrical energy.
- Known derar ⁇ term energy generators 2 use the electrodynamic, piezoelectric or capacitive transducer principle.
- the Energyge ⁇ erator 2 is to be designed so that the Ener gy produced ⁇ proportional to the measured variable M, in this case, the vibration is. The occurring amplitudes of the mechanical vibration generate correspondingly an electrical output signal.
- the concrete conversion principle determines the type of measured variable M.
- a capacitive energy generator 2 for example, generates charge transfer currents from the oscillation. These are proportional to the change in the deflection, ie the vibration velocity.
- a derarti ⁇ ger vibration sensor 1 can be used as a bearing monitoring for simple machines such as electric motors 6.
- the invention relates to a sensor for monitoring a measured variable with an output unit for a sensor signal, wherein the sensor signal is provided from exceeding a threshold value by the measured variable for output.
- the invention has for its object to provide a simple and inexpensive threshold sensor that works completely wireless and yet reliable in terms of communication and energy.
- This object is solves ge ⁇ that the sensor has an energy generator for generating energy by means of the measure of the energy supply of the sensor ⁇ provided.
- the power generator at the same time the measuring transducer is ⁇ , representing a transducer in the proper sense.
- the measure of the measured variable is the erzeug in the energy generator ⁇ te energy.
- the sensor operates only when the measured variable over ⁇ ever exists.
- the invention can be used for all parameters that also allow power generation.
- the energy supply is self-sufficient according to the invention, no wiring is necessary. Despite autonomous energy generation from the environment, a high level of reliability is guaranteed because the size to be measured also provides the energy for the sensor.
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005059759A DE102005059759A1 (de) | 2005-12-14 | 2005-12-14 | Energiegenerator als Alarmsensor |
| PCT/EP2006/069005 WO2007068585A1 (de) | 2005-12-14 | 2006-11-28 | Energiegenerator als alarmsensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1960979A1 true EP1960979A1 (de) | 2008-08-27 |
| EP1960979B1 EP1960979B1 (de) | 2012-01-11 |
Family
ID=37872422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06830155A Revoked EP1960979B1 (de) | 2005-12-14 | 2006-11-28 | Energiegenerator als alarmsensor |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1960979B1 (de) |
| AT (1) | ATE541278T1 (de) |
| DE (1) | DE102005059759A1 (de) |
| WO (1) | WO2007068585A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008038875B3 (de) | 2008-08-13 | 2010-01-28 | Abb Technology Ag | Temperaturfühler für eine prozesstechnische industrielle Anlage |
| DE202009018135U1 (de) | 2009-09-01 | 2011-02-17 | Abb Technology Ag | Thermometer (I) |
| DE202009018134U1 (de) | 2009-09-01 | 2011-02-17 | Abb Technology Ag | Thermometer (II) |
| DE102009055401A1 (de) * | 2009-12-30 | 2011-07-07 | Deutsche Post AG, 53113 | Sensormodul zur Sollwertüberwachung einer Messgröße und zugehöriges Verfahren |
| DE102011011824A1 (de) * | 2011-02-19 | 2012-08-23 | Volkswagen Ag | Hubzahlsensor |
| CN102998050B (zh) * | 2011-09-19 | 2014-12-31 | 珠海三德艺电子有限公司 | 多功能工业压力表及其控制方法 |
| WO2021052585A1 (de) * | 2019-09-19 | 2021-03-25 | Fraba B.V. | Sensornetzwerkanordnung |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2476115A (en) * | 1945-01-10 | 1949-07-12 | Runbaken Julian Henry | Electrical testing instrument |
| US3337801A (en) * | 1964-03-06 | 1967-08-22 | Alton L Rinier | Hot line indicator useable with a plurality of hand tools |
| US3868855A (en) * | 1974-01-03 | 1975-03-04 | Frank W Murphy Manufacturer In | Tachometer instrument |
| US6100679A (en) * | 1996-09-17 | 2000-08-08 | Tasco, Inc. | Voltage indicating instrument |
| DE29923046U1 (de) * | 1999-12-31 | 2000-03-23 | Rademacher, Wilhelm, 46414 Rhede | Sensor für eine Verdunkelungsvorrichtung und Verdunkelungsanlage |
| DE20107114U1 (de) * | 2001-04-25 | 2001-07-05 | Abb Patent Gmbh, 68309 Mannheim | Einrichtung zur Energieversorgung von Feldgeräten |
| DE20107112U1 (de) * | 2001-04-25 | 2001-07-05 | Abb Patent Gmbh, 68309 Mannheim | Einrichtung zur Energieversorgung von Feldgeräten |
| DE20107116U1 (de) * | 2001-04-25 | 2001-07-05 | Abb Patent Gmbh, 68309 Mannheim | Einrichtung zur Energieversorgung von Feldgeräten |
| DE20107113U1 (de) * | 2001-04-25 | 2001-07-05 | Abb Patent Gmbh, 68309 Mannheim | Einrichtung zur Energieversorgung von Feldgeräten |
| DE20107111U1 (de) * | 2001-04-25 | 2001-07-05 | Abb Patent Gmbh, 68309 Mannheim | Einrichtung zur Energieversorgung von Feldgeräten |
| DE10326064A1 (de) * | 2003-06-10 | 2005-01-05 | Beha Innovation Gmbh | Spannungsdetektor |
| DE202004001246U1 (de) * | 2004-01-27 | 2004-04-08 | Institut für Solare Energieversorgungstechnik Verein an der Universität Kassel e.V. | Bestrahlungsstärkemessvorrichtung |
| DE102004049724B4 (de) * | 2004-10-11 | 2008-02-21 | Sew-Eurodrive Gmbh & Co. Kg | Sensor, Antriebskomponente und Antrieb |
-
2005
- 2005-12-14 DE DE102005059759A patent/DE102005059759A1/de not_active Withdrawn
-
2006
- 2006-11-28 WO PCT/EP2006/069005 patent/WO2007068585A1/de not_active Ceased
- 2006-11-28 AT AT06830155T patent/ATE541278T1/de active
- 2006-11-28 EP EP06830155A patent/EP1960979B1/de not_active Revoked
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007068585A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102005059759A1 (de) | 2007-06-28 |
| ATE541278T1 (de) | 2012-01-15 |
| WO2007068585A1 (de) | 2007-06-21 |
| EP1960979B1 (de) | 2012-01-11 |
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