EP0970457B1 - Einrichtung und verfahren zur schnee- und eismeldung - Google Patents
Einrichtung und verfahren zur schnee- und eismeldung Download PDFInfo
- Publication number
- EP0970457B1 EP0970457B1 EP98912386A EP98912386A EP0970457B1 EP 0970457 B1 EP0970457 B1 EP 0970457B1 EP 98912386 A EP98912386 A EP 98912386A EP 98912386 A EP98912386 A EP 98912386A EP 0970457 B1 EP0970457 B1 EP 0970457B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- heating element
- current
- temperature
- humidity sensor
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
- G08B19/02—Alarm responsive to formation or anticipated formation of ice
Definitions
- the invention relates to a snow and ice alarm device with a humidity sensor to which a heating circuit is assigned and one as a function of a moisture sensor measured variable controlled evaluation circuit that at predetermined Humidity values a switching and / or control signal produce.
- the invention further relates to a method for Operation of the snow and ice alarm system.
- DE 40 32 734 C1 describes a snow and ice detection device known for controlling a heating system.
- This Facility prevents snow and ice formation on limited Road areas, ramps or roofs.
- Moisture is at least two exposed electrodes thereby found that there is a resistance between the electrode assembly measured and when falling below a predetermined Resistance value moisture is signaled.
- a heating element in or on the moisture electrodes be arranged so that an adjacent layer of ice and snow melted and converted into electrically conductive water becomes.
- a Temperature sensor that detects ambient or surface temperature required.
- the humidity sensor develops after falling below a "critical" temperature value (close to 0 ° C) Moisture signal, so the switching or control signal is generated and the associated heating system switched on because of snow or Ice formation can be assumed.
- This well-known establishment is characterized by high accuracy and has proven in practice. However, it has not been easy so far possible to be exposed to constant environmental influences metallic moisture electrodes from corrosion. pollution and / or to protect short circuits from the outside.
- the operational Reliability of the well-known ice and snow detector therefore depends on periodic maintenance and cleaning work from. Such work may only be of Specialist personnel can be carried out and, above all, complex if the humidity sensor is relatively difficult to access, for example in a gutter. Also a tight encapsulation the electrical components of the known humidity sensor is not easy to implement because of the metallic Electrodes must be exposed.
- the invention has for its object a snow and To provide ice reporting facilities at the a reliable function with significantly reduced maintenance and low production costs guaranteed is.
- this object is inventively solved in that an ambient temperature sensor in a Control circuit is arranged, which at the humidity sensor Detection of a temperature within a specified temperature range activated; that the humidity sensor is a PTC heating element has, whose current consumption as a measure of the Moisture is used; and that the two sensors in mutual distance in an elongated sensor cartridge are arranged such that the temperature sensor of the PCT heating element is thermally decoupled.
- the invention is based on the use of a moisture sensor with maintenance-intensive exposed moisture electrodes.
- the invention uses the temperature-dependent current consumption of a PTC resistor or heating element for moisture measurement.
- This PTC heating element can be produced very inexpensively in the form of a pill which is installed in a heat-conducting capsule, for example a metal or glass sleeve.
- the current consumption of a PTC heating element or resistor is dependent not only on its ambient temperature, but also on its energy output to the environment.
- the heat transfer between solid bodies and gaseous media is significantly worse than that between solid bodies and liquid media.
- the heat dissipation from the PTC heating element by air (with a dry sensor) is significantly worse than through a damp or even liquid ambient atmosphere.
- the diagram according to FIG. A was recorded in an ambient temperature window between + 5 ° C. and -20 ° C. Data were recorded at an operating voltage of 12V the following currents Feeler dry, calm 100 ... 120mA Feeler dry, strong wind 140 ... 170mA / Feeler moist 190 ... 200mA Feeler very wet 200 ... 250mA.
- a significant advantage of the invention also lies in the special training of the entire sensor combination in one elongated feeler cartridge.
- the sensor cartridge has overall small dimensions and can be easily on one suitable location of the area to be monitored for snow and ice formation Install zone.
- the humidity sensor is always there in the so-called distal area of the elongated sensor cartridge arranged while the ambient temperature sensor is spaced from the moisture sensor and thermally decoupled.
- the heating effect of the PTC heating element influences the detection of the ambient temperature the temperature sensor not; nevertheless, both sensors can be admitted in the sensor cartridge unite in a compact unit.
- the sensor cartridge formed as a plastic tube on one End a cable entry and in its opposite End area the PTC heating element in a metal or glass sleeve is arranged.
- the plastic tube has at the distal end an opening at which the thermally conductive sleeve or Shell of the PTC heating element is exposed to the environment and the Possibility to dissipate heat.
- the ambient temperature sensor is close to the cable entry, i.e. away from the PTC heating element arranged in the plastic tube.
- Snow and ice reporting facilities are usually one Defrosting heater controlled.
- This can for example, be installed in a roof and ensure that the roof is reliable from larger masses of snow is kept free.
- the advantage of such roof heating is in addition to avoiding dangerous ice and snow roof avalanches the possibility of permanent relief of the Roof construction and thus for the lighter and cheaper Roof design.
- the control circuit closes the Invention the measuring circuit of the moisture sensor.
- the humidity sensor is therefore only subjected to current if the Ambient temperature is in a critical range close to 0 ° C, if there is any danger of snow and ice formation consists.
- the control circuit After switching on the power to the PTC heating element the latter initially has a very high and of the moisture consumption is largely independent of the humidity.
- a lead time lock activated by the control circuit effective which triggers the switching and / or Control signal over a predetermined period of time locks until the PTC heating element is a steady Has reached operating state.
- the temperature windows of both the ambient temperature sensor are preferably as well as the humidity sensor.
- the method according to the invention for snow and ice reporting uses the snow and ice reporting system described above and is characterized by the invention characterizing features of claim 12.
- the device 1 shows an embodiment the snow and ice reporting device according to the invention 1.
- the device 1 is used in the illustrated embodiment to activate a load relay 3.
- the latter closes the operating circuit 5 when activated Heating device, for example surface heating, the to defrost a roof or gutter.
- the Heater is powered from a mains power source that also an operating current source 10 for the Schr.ee and ice reporting device 1 supplied. As can be seen, it is from the Operating current source 10 generated operating voltage a low voltage of 12Vac or dc.
- An essential part of the new snow and ice alarm system 1 is a sensor arrangement 11 with an ambient temperature sensor 12 and one as a PTC heating element or -Resistance trained moisture sensor 13. Training the sensor arrangement is explained below with reference to FIG. 2.
- the sensor arrangement 11 is in an elongated, tubular sensor cartridge 14 installed.
- the sensor cartridge 14 consists of a poorly heat-conducting material, preferably made of plastic.
- a connecting cable 15 is over a cable entry 16 at one end of the pipe into the interior the sensor cartridge 14 introduced.
- the ambient temperature sensor is designed as a PTC resistor and on the cable entry 16 adjacent end region of the sensor cartridge 14 arranged so that the ambient temperature through its thin wall can record relatively quickly and accurately.
- the Moisture sensor 13 designed as a PTC heating element is on the the cable entry 16 opposite end of the elongated Sensor cartridge 14 arranged, in one such a distance from the ambient temperature sensor 12 that the latter unaffected by the heating energy of the PTC heating element, is thermally decoupled from the heating element.
- the PTC heating element is moisture proof in a metal or Glass sleeve arranged.
- the latter lies through a window-like Opening 17 in the plastic tube 14 open to the outside.
- the from the PTC heating element when the humidity sensor is activated generated heat can therefore without significant transition losses through which the heating element receiving metal or Glass sleeve are discharged to the environment.
- the ambient temperature measurement by the temperature sensor 12 is in the ice and snow reporting device described 1 the primary measurement and control variable. Only when falling below close to a "critical" ambient temperature value 0 ° C there is a risk of snow and ice formation. But it can also be assumed that below one very low temperature in the described embodiment in a setting range from -5 ° C to -20 ° C no ice formation takes place.
- a temperature evaluation device 20 is in the described embodiment with two adjustable limit switches 21 and 22 provided, one of which for setting an upper Limit temperature between -3 ° C and + 5 ° C and the other 22 for Setting a lower limit temperature between -20 ° C and -5 ° C is used.
- the ambient temperature signal is the temperature evaluation device 20 fed via a line 24 and with the temperature window set on 21 and 22 compared.
- the temperature evaluation device remains outside the temperature window 20 inactive.
- the humidity sensor forming PTC heating element 13 remains off as long as the ambient temperature outside the set temperature window is and no switching signal at the output 25 of the Temperature evaluation device 20 is present.
- the temperature evaluation device 20 a switching signal on line 25.
- This switching signal closes a PTC control switch 26 the operating circuit 30 of the PTC heating element, which starts to heat up immediately.
- the current consumption of the PTC heating element can be via a current evaluation device 31 recorded and taking into account the A as a measure of the humidity in the environment of the moisture sensor 13 can be used.
- the Current draw of the PTC heating element is during an initial Swing-in phase not a reproducible measure for the Humidity environment of the PTC sensor 13. To avoid Incorrect measurements or falsifications are therefore described Embodiment of FIG.
- one of the signal on the line 25 activated lead time block 33 is provided, which is coupled to the current evaluation device 31 and. the latter over a predetermined time after generation of the signal on line 25 blocks.
- the PTC heating element in a period of 3 to 5 minutes. usually at the latest after 4 minutes, his steady Operating status reached.
- the lead time lock 33 is therefore in the described embodiment to 4 minutes set. After that, the current consumption is reliable Measure for damp or dry environmental conditions.
- the moisture sensitivity of the current evaluation device 31 can be set with the aid of an actuator 32.
- the evaluation device 31 develops a switching and / or Control signal on the output line 35. With this Switching or control signal is the load relay 3 and thus the surface heating 7 activated.
- a holding circuit 36 is arranged, by means of which the Control input 38 of the load relay 3 via an adjustable Minimum time is kept activated as soon as at the exit of the Current evaluation device 31 a switching or control signal pending.
- This heating time can be set using a suitable heating timer 37 entered the holding circuit 36 become.
- the temperature indicator lights up if the ambient temperature in that by the limit switch predetermined temperature interval.
- the moisture indicator lights up when there is a switching or control signal on the Line 35 is developed.
- the lead time indicator lights up as long as the lead time lock is in effect.
- the network display denotes the operational state of the overall system, and the heating indicator shows the activation of the Load relay 3 and thus the surface heating 7.
- the sensor assembly 11 can Measured value recording even in hard to reach places, such as in gutters or in the area of high antennas or parabolic mirrors respectively.
- the sensor arrangement requires practically none Maintenance because of the sensor connections and electrical components encapsulated corrosion-free and moisture-proof are.
- the current consumption of the temperature sensor is extremely low; the PTC sensor 13 also has a low energy consumption and is only switched on when the possibility there is snow and ice formation.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Defrosting Systems (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
- Geophysics And Detection Of Objects (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Description
| Fühler trocken, Windstille | 100...120mA |
| Fühler trocken, starker Windanfall | 140...170mA |
| / | |
| Fühler feucht | 190...200mA |
| Fühler sehr naß | 200...250mA. |
- Fig. 1
- ein Blockschaltbild mit den elektrischen Komponenten eines Ausführungsbeispiels der erfindungsgemäßen Schnee- und Eismeldeeinrichtung; und
- Fig. 2
- eine schematische Seitenansicht auf ein Ausführungsbeispiel einer Fühlerpatrone für die Schnee- und Eismeldeeinrichtung gemäß Fig. 1.
Claims (18)
- Schnee- und Eismeldeeinrichtung mit einem Feuchtefühler, dem ein Heizstromkreis zugeordnet ist und einer in Abhängigkeit von einer Feuchtefühler-Meßgröße gesteuerten Auswerteschaltung, die bei vorgegebenen Feuchtigkeitswerten ein Schalt- und/oder Steuersignal erzeugt,
dadurch gekennzeichnet, daß ein Umgebungstemperaturfühler in einer Steuerschaltung angeordnet ist, welche den Feuchtefühler bei Erfassung einer Temperatur innerhalb eines vorgegebenen Temperaturbereichs aktiviert;
daß der Feuchtefühler ein PTC-Heizelement aufweist, dessen Stromaufnahme als Maß für die Feuchtigkeit verwendet wird; und
daß die beiden Fühler in gegenseitigen Abstand in einer langgestreckten Fühlerpatrone derart angeordret sind, daß der Temperaturfühler von dem PTC-Heizelement thermisch entkoppelt ist. - Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Fühlerpatrone als Kunststoffrohr ausgebildet ist, an dessen einem Ende eine Kabeleinführung und in dessen entgegengesetztem Endbereich das PTC-Heizelement in einer Metalloder Glashülse angeordnet ist.
- Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Temperaturfühler nahe der Kabeleinführung und entfernt von dem PTC-Heizelement im Kunststoffrchr angeordnet ist.
- Einrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Steuerschaltung einen den Meßstromkreis des Feuchtefühlers schließenden Schalter steuert.
- Einrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß dem Meßstromkreis ein Stromaufnehmer mit einem Grenzwertgeber zugeordnet ist, und daß bei einer den Grenzwert übersteigenden Stromaufnahme des PTC-Heizelementes das Schalt- und/oder Steuersignal auslösbar ist.
- Einrichtung nach Anspruch 5, dadurch gekennzeichnet, daß dem Stromaufnehmer ein einstellbarer Zeitgeber nachgeschaltet ist, der das Schalt- und/oder Steuersignal für eine voreingestellte Zeitdauer hält.
- Einrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Schalt- und/oder Steuersignal über einen vorzugsweise als Lastrelais ausgebildeten Schalter eine zum Abtauen dienende Heiz- und/oder Warneinrichtung steuert.
- Einrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Steuerschaltung zusätzlich eine Vorlaufzeitsperre aktiviert, welche die Auslösung des Schaltund/oder Steuersignals über eine vorgegebene Zeitspanne sperrt, bis das PTC-Heizelement einen eingeschwungenen Betriebszustand erreicht.
- Einrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Umgebungstemperaturfühler Mittel zur Einstellung einer oberen und/oder unteren Grenztemperatur aufweist und daß der Feuchtefühler bei Unterschreiten einer oberen Grenztemperatur aktivierbar ist.
- Einrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß visuelle Anzeigemittel jeweils mit einem Ausgang zumindest der Steuerschaltung und der Auswerteschaltung gekoppelt sind.
- Einrichtung nach Anspruch 10, dadurch gekennzeichnet, daß visuelle Anzeigemittel zusätzlich mit einer Betriebsstromquelle und mit einer Heizungssteuerung gekoppelt sind.
- Verfahren zur Schnee- und Eismeldung unter Verwendung einer Einrichtung nach einem der Ansprüche 1 bis 11,
dadurch gekennzeichnet, daß ein ein PTC-Heizelement enthaltender Feuchtefühler und ein Umgebungstemperaturfühler in gegenseitigem Abstand und thermisch entkoppelt in einer langgestreckten Fühlerpatrone angeordnet werden,
daß die Fühlerpatrone in eine überwachte schnee- und eisgefährdete Zone eingetaucht wird, wobei der Umgebungstemperaturfühler die Umgebungstemperatur erfaßt,
daß der Heizstromkreis des PTC-Heizelements in Abhängigkeit vom Unterschreiten einer voreingestellten Grenztemperatur aktiviert wird; und
daß der Strom im Heizkreis des PTC-Feuchtefühlers abgetastet und bei Überschreiten eines vorgegebenen Grenzstroms ein Schalt- und/oder Steuersignal ausgelöst wird. - Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß ein Temperaturfenster zwischen +5°C und -20°C eingestellt wird und der Heizstromkreis des Heizelements nur innerhalb dieses Fensters aktiviert wird.
- Verfahren nach Anspruch 12 oder 13, dadurch gekennzeichnet, daß mit dem Schalt- und/oder Steuersignal eine ein Dach, eine oder mehrere Dachrinnen und/oder eine oder mehrere Parabolspiegel beheizende Heizeinrichtung oder ein Warnsignal aktiviert wird.
- Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß eine Mindest-Aktivierungszeit der Flächenheizung voreingestellt wird.
- Verfahren nach einem der Ansprüche 12 bis 15, dadurch gekennzeichnet, daß der das PTC-Heizelement durchfließende Strom gemessen und in Abhängigkeit von einem Stromstärke-Grenzwert bei aktiviertem Feuchtefühler das Schalt- und/oder Steuersignal ausgelöst wird.
- Verfahren nach einem der Ansprüche 12 bis 16, dadurch gekennzeichnet, daß bei Unterschreiten eines oberen Grenztemperaturwerts eine Vorlaufzeitsperre ausgelöst wird, mit der die Ausgabe des Schalt- und/oder Steuersignals über eine vorgegebene Zeit gesperrt wird, bis sich Temperatur bzw. Stromaufnahme des PTC-Heizelements in einem eingeschwungenen Zustand befindet.
- Verfahren nach einem der Ansprüche 12 bis 17, dadurch gekennzeichnet, daß die Betriebszustände des Umgebungstemperaturfühler und/oder des Feuchtefühlers und/oder eine Heizung und/oder einer Vorlaufzeit und das Vorhandensein der Netzspannung sichtbar gemacht werden.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19711371 | 1997-03-19 | ||
| DE19711371A DE19711371C1 (de) | 1997-03-19 | 1997-03-19 | Einrichtung und Verfahren zur Schnee- und Eismeldung |
| PCT/EP1998/001055 WO1998041958A1 (de) | 1997-03-19 | 1998-02-25 | Einrichtung und verfahren zur schnee- und eismeldung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0970457A1 EP0970457A1 (de) | 2000-01-12 |
| EP0970457B1 true EP0970457B1 (de) | 2002-05-02 |
Family
ID=7823849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98912386A Expired - Lifetime EP0970457B1 (de) | 1997-03-19 | 1998-02-25 | Einrichtung und verfahren zur schnee- und eismeldung |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6276202B1 (de) |
| EP (1) | EP0970457B1 (de) |
| AT (1) | ATE217110T1 (de) |
| CA (1) | CA2284258C (de) |
| DE (3) | DE19711371C1 (de) |
| DK (1) | DK0970457T3 (de) |
| WO (1) | WO1998041958A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007039990A1 (de) | 2007-08-23 | 2009-02-26 | Tekmar Gmbh | Verfahren zur Feuchtemessung und zugehörige Einrichtung |
| DE102011111959A1 (de) | 2011-08-30 | 2013-02-28 | Björn Zehetmair | Verfahren zum Detektieren eines auf einer Messoberfläche befindlichen, Feuchte in Form von Wasser, Schnee oder Eis enthaltenden Mediums und Vorrichtung für dessen Durchführung |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7216064B1 (en) | 1993-09-21 | 2007-05-08 | Intel Corporation | Method and apparatus for programmable thermal sensor for an integrated circuit |
| US6553813B2 (en) * | 2000-02-29 | 2003-04-29 | Rynhart Research Limited | Moisture meter with impedance and relative humidity measurements |
| EP1245762B1 (de) * | 2001-03-27 | 2004-01-28 | C.R.F. Società Consortile per Azioni | Türschloss |
| US6727471B2 (en) | 2002-07-05 | 2004-04-27 | Clarke B. Evans | Modular flexible heater system with integrated connectors |
| US20040021575A1 (en) * | 2002-08-01 | 2004-02-05 | Oskorep John Jeffrey | Methods and apparatus for melting snow and ice on a vehicle |
| US7059170B2 (en) | 2004-02-27 | 2006-06-13 | Nielsen-Kellerman, Inc. | Method and apparatus for measuring relative humidity of a mixture |
| WO2006123977A1 (en) * | 2005-05-18 | 2006-11-23 | Fasitet Trollhättan Aktiebolag | A method for detecting ice on the surface of a fixed structure, a device for performing the method and a fixed structure provided with a device for detecting ice |
| US9086363B2 (en) * | 2008-09-05 | 2015-07-21 | The Research Foundation Of State University Of New York. | Carbon nanotube dewpoint and ice condition sensor |
| US10101219B2 (en) | 2008-09-05 | 2018-10-16 | The Research Foundation For The State University Of New York | Carbon nanotube sensing system, carbon nanotube dew point hygrometer, method of use thereof and method of forming a carbon nanotube dew point hygrometer |
| US20100168694A1 (en) * | 2008-12-31 | 2010-07-01 | Sudhanshu Gakhar | Infrared Wetness Detection System For An Absorbent Article |
| US8866624B2 (en) * | 2008-12-31 | 2014-10-21 | Kimberly-Clark Worldwide, Inc. | Conductor-less detection system for an absorbent article |
| US8598496B2 (en) * | 2009-10-05 | 2013-12-03 | A. Kayser Automotive Systems Gmbh | Method for testing the operation of a heating element used for an activated carbon filter |
| US20110169507A1 (en) * | 2010-01-08 | 2011-07-14 | WHLK, LLC d/b/a Voltree Power | Methods and apparatus for the determination of moisture content |
| CN104550137A (zh) * | 2013-10-21 | 2015-04-29 | 宁夏中远天晟科技有限公司 | 一种铁路车辆红外线轴温探测系统的探头单片机系统控制压缩空气扫雪装置 |
| CN104550136A (zh) * | 2013-10-21 | 2015-04-29 | 宁夏中远天晟科技有限公司 | 一种铁路车辆红外线轴温探测系统的探头单片机系统控制风机扫雪装置 |
| DE102013020583A1 (de) * | 2013-12-13 | 2015-06-18 | Hirschmann Automation And Control Gmbh | Sensorelement mit einem Überspannungsschutz |
| US10354329B2 (en) * | 2014-08-06 | 2019-07-16 | Hartford Fire Insurance Company | Smart sensors for roof ice formation and property condition monitoring |
| US10350115B2 (en) | 2015-02-27 | 2019-07-16 | Kimberly-Clark Worldwide, Inc. | Absorbent article leakage assessment system |
| WO2018186842A1 (en) | 2017-04-05 | 2018-10-11 | Kimberly-Clark Worldwide, Inc. | Garment for detecting absorbent article leakage and methods of detecting absorbent article leakage utilizing the same |
| EP3454027B1 (de) * | 2017-09-07 | 2019-10-02 | E+E Elektronik Ges.M.B.H. | Messaufnehmer zum ermitteln der feuchtigkeit |
| US11619603B2 (en) * | 2019-02-25 | 2023-04-04 | The University Of Toledo | Sensor system for detecting of a presence and a phase of a medium on a surface and methods of using the same |
| US20210087818A1 (en) * | 2019-09-19 | 2021-03-25 | Caleb Hagler | Snow Removal Assembly |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3276254A (en) * | 1963-10-11 | 1966-10-04 | Rosemount Eng Co Ltd | Ice detection apparatus |
| CH560941A5 (en) * | 1973-09-13 | 1975-04-15 | Boschung Fa M | Road ice warning signal - uses at least two measurement posts, one heated |
| US3926052A (en) * | 1974-05-06 | 1975-12-16 | Johnson Service Co | Relative humidity computer |
| DE2514489C3 (de) * | 1975-04-03 | 1980-12-18 | Tekmar Angewandte Elektronik Gmbh & Co Kg, 4300 Essen | Schnee- und Eiswarngerät |
| US4261179A (en) * | 1978-09-22 | 1981-04-14 | Ardco, Inc. | Input control system |
| EP0013022B1 (de) * | 1978-12-26 | 1984-03-28 | Matsushita Electric Industrial Co., Ltd. | Ein Porzellan-Widerstandselement verwendender Feuchtigkeitssensor |
| US4419888A (en) * | 1979-06-14 | 1983-12-13 | Kabushikikaisha Shibaura Denshi Seisakusho | Humidity measuring method |
| US4419021A (en) * | 1980-02-04 | 1983-12-06 | Matsushita Electric Industrial Co., Ltd. | Multi-functional sensing or measuring system |
| DE3751125T2 (de) * | 1986-02-04 | 1995-08-10 | Sharp Kk | Feuchtigkeitsmesskreis. |
| DE3613024A1 (de) * | 1986-04-17 | 1987-10-22 | Defromat Heizelektrik Gmbh & C | Feuchtefuehler |
| US4893508A (en) * | 1988-12-13 | 1990-01-16 | Viz Manufacturing Company | Humidity sensing apparatus and method therefor |
| DE4032734C1 (de) * | 1990-10-15 | 1992-01-30 | Tekmar Angewandte Elektronik Gmbh, 4300 Essen, De | |
| US5365784A (en) * | 1992-04-30 | 1994-11-22 | The United States Of America As Represented By The Secretary Of The Air Force | Humidity sensing apparatus and method |
| US5345223A (en) * | 1992-09-04 | 1994-09-06 | The B. F. Goodrich Company | Snow sensor |
| FI96640C (fi) * | 1993-08-23 | 1996-07-25 | Vaisala Oy | Menetelmä suhteellisen kosteuden mittaamiseksi, etenkin radiosondeissa |
| FI95626C (fi) * | 1993-09-29 | 1996-02-26 | Vaisala Oy | Menetelmä ja järjestely kosteuden mittauksessa, etenkin radiosondeissa |
| US5521584A (en) * | 1993-10-13 | 1996-05-28 | Eaton Corporation | Apparatus and method for detecting ice |
| US5585559A (en) * | 1994-03-25 | 1996-12-17 | Canon Kabushiki Kaisha | Environment measuring apparatus |
| JP2795807B2 (ja) * | 1994-06-16 | 1998-09-10 | ティーディーケイ株式会社 | 湿度センサ |
| US5792938A (en) * | 1996-12-13 | 1998-08-11 | Panametrics, Inc. | Humidity sensor with differential thermal detection and method of sensing |
| US5934617A (en) * | 1997-09-22 | 1999-08-10 | Northcoast Technologies | De-ice and anti-ice system and method for aircraft surfaces |
-
1997
- 1997-03-19 DE DE19711371A patent/DE19711371C1/de not_active Expired - Fee Related
- 1997-10-09 DE DE29717945U patent/DE29717945U1/de not_active Expired - Lifetime
-
1998
- 1998-02-25 CA CA002284258A patent/CA2284258C/en not_active Expired - Fee Related
- 1998-02-25 DK DK98912386T patent/DK0970457T3/da active
- 1998-02-25 AT AT98912386T patent/ATE217110T1/de not_active IP Right Cessation
- 1998-02-25 DE DE59803984T patent/DE59803984D1/de not_active Expired - Lifetime
- 1998-02-25 WO PCT/EP1998/001055 patent/WO1998041958A1/de not_active Ceased
- 1998-02-25 EP EP98912386A patent/EP0970457B1/de not_active Expired - Lifetime
- 1998-02-25 US US09/381,587 patent/US6276202B1/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007039990A1 (de) | 2007-08-23 | 2009-02-26 | Tekmar Gmbh | Verfahren zur Feuchtemessung und zugehörige Einrichtung |
| DE102011111959A1 (de) | 2011-08-30 | 2013-02-28 | Björn Zehetmair | Verfahren zum Detektieren eines auf einer Messoberfläche befindlichen, Feuchte in Form von Wasser, Schnee oder Eis enthaltenden Mediums und Vorrichtung für dessen Durchführung |
Also Published As
| Publication number | Publication date |
|---|---|
| US6276202B1 (en) | 2001-08-21 |
| DE29717945U1 (de) | 1998-08-20 |
| ATE217110T1 (de) | 2002-05-15 |
| CA2284258C (en) | 2008-04-08 |
| EP0970457A1 (de) | 2000-01-12 |
| WO1998041958A1 (de) | 1998-09-24 |
| CA2284258A1 (en) | 1998-09-24 |
| DK0970457T3 (da) | 2002-08-26 |
| DE59803984D1 (de) | 2002-06-06 |
| DE19711371C1 (de) | 1998-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0970457B1 (de) | Einrichtung und verfahren zur schnee- und eismeldung | |
| EP0481315B1 (de) | Verfahren und Einrichtung zur Schnee- und Eismeldung | |
| DE2818055C3 (de) | Einrichtung zum Erzeugen eines Vorwarnsignales, wenn Eisbildungsgefahr auf einer Fahrbahn besteht | |
| DE2318803C3 (de) | Warnsignalanlage | |
| DE2244166A1 (de) | Verfahren und vorrichtung zur feststellung verschiedener zustaende | |
| DE1573198A1 (de) | Einrichtung zum Verhindern der Kondensation von Feuchtigkeit und der Eisbildung auf einer Flaeche | |
| DE69306406T2 (de) | Einbrecher-abschrecksystem | |
| DE3636074A1 (de) | Kontroll- und meldesystem zur erkennung von eindringendem wasser in gebaeuden | |
| DE3336758C2 (de) | Elektronisch betätigte Kondensat-Ablaßventilvorrichtung zum Ablassen von Kondensat aus einem Dampfsystem | |
| DE69423226T2 (de) | Eisbildungsanzeigevorrichtung | |
| DE69318878T2 (de) | Einrichtung zum Erfassen und Kontrollieren der Eisbildung an einem Kühlschrankverdampfer | |
| WO1985003135A1 (fr) | Procede et sonde de mesure pour determiner la formation de glace ou de neige | |
| DE1766397B2 (de) | Verfahren zur Erzeugung eines Alarmsignals und elektrische Schaltung zur Durchführung dieses Verfahrens | |
| DE2063103C3 (de) | Fühl vorrichtung zur Wahrnehmung plötzlicher Temperaturänderungen | |
| EP2076635A1 (de) | Verfahren und vorrichtung zur erfassung der nutzung von urinalen und zur auslösung einer automatischen spülung | |
| DE102004056134B3 (de) | Anordnung zur Detektion von Schnee und/oder Eis an Gleisanlagen | |
| DE4411867A1 (de) | Sperrschranke für Verkehrswege | |
| CH560941A5 (en) | Road ice warning signal - uses at least two measurement posts, one heated | |
| DE10150078A1 (de) | Verfahren und Vorrichtung zur Detektion von Niederschlägen | |
| DE3443130A1 (de) | Einrichtung zur ueberwachung des wasserstandes im kanalisationssystem eines gebaeudes | |
| DE19719226C1 (de) | Verfahren zur Ermittlung von Witterungsverhältnissen und Vorrichtung zur Durchführung des Verfahrens | |
| DE69510135T2 (de) | Alarmdetektionsvorrichtung mit Stromschleifen und Bake zur Lokalisierung von Waterzonen für eine solche Vorrichtung | |
| DE4232245A1 (de) | Einrichtung zur Temperaturüberwachung eines langgestreckten oder flächigen Gegenstandes | |
| DE19712110C1 (de) | Schneealarmgeber | |
| DE2254351C3 (de) | Einrichtung zur Feststellung von Glatteisgefahr auf Straßen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 19990929 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK FR GB IT LI LU NL SE |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| 17Q | First examination report despatched |
Effective date: 20010829 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: TEKMAR GMBH |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK FR GB IT LI LU NL SE |
|
| REF | Corresponds to: |
Ref document number: 217110 Country of ref document: AT Date of ref document: 20020515 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REF | Corresponds to: |
Ref document number: 59803984 Country of ref document: DE Date of ref document: 20020606 |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20020720 |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
| ET | Fr: translation filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20030204 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 20090303 Year of fee payment: 12 Ref country code: DK Payment date: 20090219 Year of fee payment: 12 Ref country code: AT Payment date: 20090224 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20090224 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20090325 Year of fee payment: 12 Ref country code: CH Payment date: 20090316 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20090221 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20090430 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20090220 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20091229 Year of fee payment: 13 |
|
| BERE | Be: lapsed |
Owner name: *TEKMAR G.M.B.H. Effective date: 20100228 |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: V1 Effective date: 20100901 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20100225 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100228 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100228 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20101029 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100225 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100901 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100301 Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100228 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100228 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100225 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100225 |
|
| REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100225 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 59803984 Country of ref document: DE Representative=s name: ZENZ PATENT- UND RECHTSANWAELTE GBR, DE |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R082 Ref document number: 59803984 Country of ref document: DE Representative=s name: ZENZ PATENT- UND RECHTSANWAELTE, DE Effective date: 20121001 Ref country code: DE Ref legal event code: R081 Ref document number: 59803984 Country of ref document: DE Owner name: TEKMAR REGELSYSTEME GMBH, DE Free format text: FORMER OWNER: TEKMAR GMBH, 45257 ESSEN, DE Effective date: 20121001 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110226 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20130228 Year of fee payment: 16 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59803984 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 59803984 Country of ref document: DE Effective date: 20140902 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140902 |