EP0150836A1 - Device for warning of ice - Google Patents

Device for warning of ice Download PDF

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Publication number
EP0150836A1
EP0150836A1 EP85100807A EP85100807A EP0150836A1 EP 0150836 A1 EP0150836 A1 EP 0150836A1 EP 85100807 A EP85100807 A EP 85100807A EP 85100807 A EP85100807 A EP 85100807A EP 0150836 A1 EP0150836 A1 EP 0150836A1
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EP
European Patent Office
Prior art keywords
temperature sensor
display part
capacitor
current
solar cell
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.)
Withdrawn
Application number
EP85100807A
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German (de)
French (fr)
Inventor
Franz-Josef Hunnekuhl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUNNEKUHL FRANZ JOSEF
Original Assignee
HUNNEKUHL FRANZ JOSEF
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
Application filed by HUNNEKUHL FRANZ JOSEF filed Critical HUNNEKUHL FRANZ JOSEF
Publication of EP0150836A1 publication Critical patent/EP0150836A1/en
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR 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 an ice warning device according to the preamble of the main claim.
  • Ice warning devices are a useful tool not only in road traffic, but also on sidewalks, house stairs or the like, in order to be informed about existing ice hazards in the event of temperature changes.
  • Such an ice warning device is described in DE-OS 29 40 205, which is equipped with a temperature sensor which works on the basis of liquid crystals or temperature-indicating color pigments.
  • a temperature sensor which works on the basis of liquid crystals or temperature-indicating color pigments.
  • Such a device is intended to make the device independent of third-party installations, such as power supply lines or the like.
  • the known device thus does not differ from conventional temperature indicators that work with mercury or ALCOHOL, and just like these devices, it is extremely difficult to make the values determined by the temperature sensor visible, particularly in fast road traffic.
  • the invention has for its object to provide an ice warning device that is also independent of third-party installations, but creates an effective display such that even in fast road traffic or for visually impaired older people, the risk of ice is immediately recognizable.
  • the invention solves this underlying problem with the features of the characterizing part of the main claim.
  • the invention makes use of the solar cells which are known per se and are already being used to a large extent today and which, accommodated in corresponding devices, are independent of third-party installations, such as power supply lines, etc.
  • the invention works with a temperature sensor which is live depending on the desired heat value to be displayed, for example + 2 to -2 ° C.
  • the power line of the solar cell connects to this temperature sensor, so that the temperature sensor blocks the current flow at values above + 2 ° C.
  • this temperature sensor becomes current-conducting and now transmits the current supplied by the solar cell to a capacitor that can discharge in pulses.
  • a display part is connected to the capacitor, which converts the current pulses supplied by the capacitor, for example, into flashes of light.
  • the size, sequence of flashes and flash intensity can vary depending on the size of the SoLarzeLLe and the Capacitor and the display part can be chosen arbitrarily.
  • the display part can also be designed as an LCD component or mechanically, e.g. work through an aperture adjustment.
  • An accumulator can also be switched on in the device.
  • the drawing shows the structure of the device according to the invention purely schematically.
  • the temperature sensor 1 denotes a temperature sensor, which, for example, enables the largest possible and thus sensitive scanning of the temperature prevailing in the area of the street surface or the surface of the stairs via a relatively large contact plate 2 or contact trough.
  • the temperature sensor 1 is arranged at the lower end of a post 3, which can be designed, for example, as a street post.
  • a post 3 can be designed, for example, as a street post.
  • an external solar cell 4 provided, a capacitor 5 and an externally visible display part 6, which can be made even stronger with appropriate prisms with regard to its display effect.
  • the solar cell 4 is connected to the temperature sensor 1 via a power line 7.
  • a current line 8 leads from the temperature sensor 1 to the capacitor 5 and from this a current line 9 leads to the display part 6.
  • the temperature sensor is designed such that it only delivers the electrical energy supplied by the solar cell 4 to the line 8 when the desired temperature range to be sensed has been reached. It should be expressly pointed out that this temperature range can of course not only lie in the frost range, but that the device according to the invention can also control other temperature ranges, so that this device is also suitable, for example, as a safety device for overheating.
  • a line 9 leads from the capacitor 5 to the display part 6 and the voltages generated by the excitation via the solar cell 4 in the capacitor 5 are now resolved in the display part into visible flashes of light which can be of a pulsed and thus relatively strong design.
  • the device according to the invention thus works when the light falls on the solar cell 4, it being found that the incident light from motor vehicle headlights is also sufficient to generate corresponding flashes in the display part 6.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Road Signs Or Road Markings (AREA)
  • Traffic Control Systems (AREA)

Abstract

A device for warning of ice on roads, paths, pavements, stairs or the like, having a temperature sensor to measure the temperature of the ground to be monitored, a display section controlled by the latter, a solar cell which produces current when light is incident, a current-conducting connection between the solar cell and the temperature sensor, a temperature sensor which is current-conducting in the required measurement range, for example +2<o>C to -2<o>C, a capacitor connected to the output side of the current conductors of the temperature sensor and a display section. <IMAGE>

Description

Die Erfindung bezieht sich auf ein Eiswarngerät gemäß dem Oberbegriff des Hauptanspruches.The invention relates to an ice warning device according to the preamble of the main claim.

Eiswarngeräte sind ein nicht nur im Straßenverkehr, sondern auch auf Bürgersteigen, Haustreppen od. dgl. erstrebenswertes HiLfsmitteL, um bei Temperaturänderungen über bestehende GLatteisgefahren informiert zu werden.Ice warning devices are a useful tool not only in road traffic, but also on sidewalks, house stairs or the like, in order to be informed about existing ice hazards in the event of temperature changes.

In der DE-OS 29 40 205 wird ein solches Eiswarngerät beschrieben, das mit einem TemperaturfühLer ausgerüstet ist, der auf der Basis flüssiger Kristalle bzw. temperaturanzeigender Farbpigmente arbeitet. Durch eine solche Einrichtung soll die Vorrichtung von fremden Installationen, wie beispielsweise StromzuLeitungen od. dgl., unabhängig werden. Die bekannte Vorrichtung unterscheidet sich damit nicht von üblichen Temperaturanzeigern, die mit QuecksiLber oder ALkohoL arbeiten und ebenso wie bei diesen Geräten, ist das Sichtbarmachen der vom TemperaturfühLer ermittelten Werte außerordentLich schwierig, insbesondere im schnellen Straßenverkehr.Such an ice warning device is described in DE-OS 29 40 205, which is equipped with a temperature sensor which works on the basis of liquid crystals or temperature-indicating color pigments. Such a device is intended to make the device independent of third-party installations, such as power supply lines or the like. The known device thus does not differ from conventional temperature indicators that work with mercury or ALCOHOL, and just like these devices, it is extremely difficult to make the values determined by the temperature sensor visible, particularly in fast road traffic.

Der Erfindung Liegt die Aufgabe zugrunde, ein Eiswarngerät zu schaffen, das ebenfalls von Fremdinstallationen unabhängig ist, dabei aber eine wirksame Anzeige derart schafft, daß auch im schnellen Straßenverkehr oder für sehbehinderte ältere Menschen sofort die GLatteisgefahr erkennbar ist.The invention has for its object to provide an ice warning device that is also independent of third-party installations, but creates an effective display such that even in fast road traffic or for visually impaired older people, the risk of ice is immediately recognizable.

Die Erfindung Löst diese ihr zugrundeliegende Aufgabe mit den MerkmaLen des kennzeichnenden TeiLes des Hauptanspruches.The invention solves this underlying problem with the features of the characterizing part of the main claim.

Die Erfindung nutzt hierbei die an sich bekannten und heute schon in großem Umfang im Einsatz befindlichen Solarzellen aus, die, in entsprechenden Vorrichtungen untergebracht, von Fremdinstallationen, wie Stromzuleitungen usw. unabhängig sind.The invention makes use of the solar cells which are known per se and are already being used to a large extent today and which, accommodated in corresponding devices, are independent of third-party installations, such as power supply lines, etc.

Da Solarzellen allein nicht in der Lage sind, Temperaturwerte anzuzeigen, arbeitet die Erfindung mit einem TemperaturfühLer, der in Abhängigkeit des gewünschten anzuzeigenden Wärmewertes, beispielsweise + 2 bis - 2° C, stromführend ist. An diesen TemperaturfühLer schließt die StromLeitung der SoLarzeLLe an, so daß bei Werten über + 2° C der TemperaturfühLer eine Sperre für den StromfLuß darstellt. Bei Temperaturen, die sich dem Gefrierpunkt nähern, also beispielsweise ab + 2° C und kälter, wird dieser TemperaturfühLer stromleitend und gibt nunmehr den von der SoLarzeLLe gelieferten Strom an einen Kondensator, der sich impulsweise entladen kann. An den Kondensator ist ein Anzeigeteil angeschlossen, das die vom Kondensator geLieferten StromimpuLse z.B. in LichtbLitze umwandelt. Größe, Blitzfolge und BLitzstärke können in Abhängigkeit der Größe der SoLarzeLLe und des Kondensators und des Anzeigeteils beliebig gewählt werden.Since solar cells alone are not able to display temperature values, the invention works with a temperature sensor which is live depending on the desired heat value to be displayed, for example + 2 to -2 ° C. The power line of the solar cell connects to this temperature sensor, so that the temperature sensor blocks the current flow at values above + 2 ° C. At temperatures that approach freezing, for example from + 2 ° C and colder, this temperature sensor becomes current-conducting and now transmits the current supplied by the solar cell to a capacitor that can discharge in pulses. A display part is connected to the capacitor, which converts the current pulses supplied by the capacitor, for example, into flashes of light. The size, sequence of flashes and flash intensity can vary depending on the size of the SoLarzeLLe and the Capacitor and the display part can be chosen arbitrarily.

Der AnzeigeteiL kann auch als LCD-BauteiL ausgebildet sein oder mechanisch, z.B. durch eine Blendenverstellung arbeiten. Auch kann in das Gerät ein AkkumuLator eingeschaltet sein.The display part can also be designed as an LCD component or mechanically, e.g. work through an aperture adjustment. An accumulator can also be switched on in the device.

Versuche haben ergeben, daß die SoLarzeLLe in der Lage ist, auch über den Kondensator BLitze im Anzeigeteil zu erzeugen, wenn die Solarzelle nur vom Scheinwerferlicht vorbeifahrender Kraftfahrzeuge gestreift wird oder durch die AußenbeLeuchtung bei Haustreppen usw. erreicht wird. Die erfindungsgemäße Vorrichtung ist damit auch nachts einsetzbar. Durch den AkkumuLator kann ihre Wirksamkeit erhöht werden.Tests have shown that the SoLarzeLLe is also able to generate flashes in the display section via the capacitor if the solar cell is only touched by the headlights of passing motor vehicles or is reached by the exterior lighting on house stairs etc. The device according to the invention can thus also be used at night. The effectiveness of the accumulator can be increased.

Ein AusführungsbeispieL der Erfindung wird nachfolgend anhand der Zeichnung beschrieben.An exemplary embodiment of the invention is described below with reference to the drawing.

Die Zeichnung zeigt rein schematisch den Aufbau der erfindungsgemäßen Vorrichtung.The drawing shows the structure of the device according to the invention purely schematically.

In der Zeichnung ist mit 1 ein TemperaturfühLer bezeichnet, der beispielsweise über eine relativ große KontaktpLatte 2 oder Kontaktwanne eine mögLichst großflächige und damit sensible Abtastung der jeweils im Bereich der StraßenoberfLäche oder TreppenoberfLäche herrschenden Temperatur ermögLicht. Der TemperaturfühLer 1 ist bei dem dargestellten AusführungsbeispieL am unteren Ende eines Pfostens 3 angeordnet, der beispielsweise als Straßenpfosten ausgebildet sein kann. In diesem Pfosten ist eine von außen erreichbare SoLarzeLLe 4 vorgesehen, ein Kondensator 5 sowie ein nach außen sichtbares AnzeigeteiL 6, das über entsprechende Prismen hinsichtlich seiner Anzeigewirkung noch verstärkt ausgebildet sein kann.In the drawing, 1 denotes a temperature sensor, which, for example, enables the largest possible and thus sensitive scanning of the temperature prevailing in the area of the street surface or the surface of the stairs via a relatively large contact plate 2 or contact trough. In the exemplary embodiment shown, the temperature sensor 1 is arranged at the lower end of a post 3, which can be designed, for example, as a street post. In this post there is an external solar cell 4 provided, a capacitor 5 and an externally visible display part 6, which can be made even stronger with appropriate prisms with regard to its display effect.

Die SoLarzeLLe 4 steht über eine StromLeitung 7 mit dem TemperaturfühLer 1 in Verbindung. Vom TemperaturfühLer 1 führt eine StromLeitung 8 zum Kondensator 5 und von diesem eine StromLeitung 9 zum Anzeigeteil 6.The solar cell 4 is connected to the temperature sensor 1 via a power line 7. A current line 8 leads from the temperature sensor 1 to the capacitor 5 and from this a current line 9 leads to the display part 6.

Der TemperaturfühLer ist so ausgebildet, daß er die von der SoLarzeLLe 4 gelieferte elektrische Energie nur an die Leitung 8 abgibt, wenn der gewünschte abzutastende Temperaturbereich erreicht ist. Hierbei sei ausdrücklich darauf hingewiesen, daß dieser Temperaturbereich natürlich nicht nur im Frostbereich Liegen kann, sondern mit dem erfindungsgemäßen Gerät ist auch die KontroLLe anderer Temperaturbereiche möglich, so daß diese Einrichtung beispielsweise auch als Sicherheitsvorrichtung für überhitzungen geeignet ist.The temperature sensor is designed such that it only delivers the electrical energy supplied by the solar cell 4 to the line 8 when the desired temperature range to be sensed has been reached. It should be expressly pointed out that this temperature range can of course not only lie in the frost range, but that the device according to the invention can also control other temperature ranges, so that this device is also suitable, for example, as a safety device for overheating.

Vom Kondensator 5 führt eine Leitung 9 zum Anzeigeteil 6 und die durch die Erregung über die Solarzelle 4 im Kondensator 5 erzeugten Spannungen werden nunmehr im AnzeigeteiL in sichtbare LichtbLitze aufgelöst, die impulsweise und damit relativ stark ausgebildet sein können. Das erfindungsgemäße Gerät arbeitet also bei Lichteinfall auf die SoLarzelle 4, wobei sich herausgestellt hat, daß auch das auftreffende Licht von Kraftfahrzeugscheinwerfern ausreicht, um entsprechende Blitze im Anzeigeteil 6 zu erzeugen.A line 9 leads from the capacitor 5 to the display part 6 and the voltages generated by the excitation via the solar cell 4 in the capacitor 5 are now resolved in the display part into visible flashes of light which can be of a pulsed and thus relatively strong design. The device according to the invention thus works when the light falls on the solar cell 4, it being found that the incident light from motor vehicle headlights is also sufficient to generate corresponding flashes in the display part 6.

Claims (7)

1. Vorrichtung zum Warnen vor Eisglätte auf Straßen, Wegen, Bürgersteigen,Treppen od. dgl. mit einem die Temperatur am zu kontrollierenden Boden erfassenden Temperaturfühler und einem von diesem gesteuerten Anzeigeteil, gekennzeichnet durch eine bei LichteinfaLL stromerzeugende SoLarzeLLe (4), eine stromleitende Verbindung (7) zwischen der SoLarzeLLe (4) und dem TemperaturfühLer (1), einem TemperaturfühLer (1), der in dem gewünschten Meßbereich, beispielsweise + 2° bis - 20 C stromleitend ist, einen an die Abgabeseite der StromLeitungen (8) des TemperaturfühLers (1) angeschlossenen Kondensator (5) und einen AnzeigeteiL (6).1.Device for warning of ice on roads, paths, sidewalks, stairs or the like, with a temperature sensor that detects the temperature on the floor to be checked and a display part controlled by this, characterized by a solar cell (4) that generates electricity in the event of light, an electrically conductive connection (7) between the SoLarzeLLe (4) and the temperature sensor (1), a temperature sensor (1) which is current-carrying in the desired measuring range, for example + 2 ° to - 2 0 C, one to the delivery side of the power lines (8) of the Temperature sensor (1) connected capacitor (5) and a display part (6). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Anzeigeteil (6) in Abhängigkeit der AufLadung des Kondensators (5) impulsweise LichtbLitze erzeugt.2. Device according to claim 1, characterized in that the display part (6) generates pulses of light flashes depending on the charge of the capacitor (5). 3. Vorrichtung wenigstens nach Anspruch 1, dadurch gekennzeichnet, daß die SoLarzeLLe (4), der Kondensator (5) und das Anzeigeteil (6) an LeitpLanken, Straßenbegrenzungspfosten und/oder VerkehrsschiLder integriert ist.3. The device at least according to claim 1, characterized in that the SoLarzeLLe (4), the capacitor (5) and the display part (6) on LeitpLanken, road boundary posts and / or VerkehrsschiLder is integrated. 4. Vorrichtung nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der TemperaturfühLer (1) in einer großflächigen Wanne angeordnet ist.4. Apparatus according to claim 1 to 3, characterized in that the temperature sensor (1) is arranged in a large-area tub. 5. Vorrichtung wenigstens nach Anspruch 1, dadurch gekennzeichnet, daß in den Pfosten (3) ein AkkumuLator eingeschaltet ist.5. The device at least according to claim 1, characterized in that in the post (3) an accumulator is switched on. 6. Vorrichtung wenigstens nach Anspruch 1, dadurch gekennzeichnet, daß das Anzeigeteil (6) als LCD-Bauteil ausgebildet ist.6. The device at least according to claim 1, characterized in that the display part (6) is designed as an LCD component. 7. Vorrichtung wenigstens nach Anspruch 1, dadurch gekennzeichnet, daß das Anzeigeteil (6) als mechanisch betätigbares BauteiL ausgebildet ist.7. The device at least according to claim 1, characterized in that the display part (6) is designed as a mechanically operable component.
EP85100807A 1984-01-26 1985-01-26 Device for warning of ice Withdrawn EP0150836A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3402521 1984-01-26
DE3402521 1984-01-26

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EP0150836A1 true EP0150836A1 (en) 1985-08-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2700871A1 (en) * 1993-01-28 1994-07-29 Roger Jean Michel Traffic lights for a coastal roadway liable to flooding
US9808764B2 (en) 2006-06-14 2017-11-07 Fluid Equipment Development Company, Llc Reverse osmosis system with control based on flow rates in the permeate and brine streams

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1441538A1 (en) * 1964-08-28 1969-05-08 Samson Appbau Ag Road traffic warning signs with an automatic device to indicate the risk or formation of black ice
DE1963665A1 (en) * 1969-12-19 1971-06-24 Bosch Gmbh Robert Information sign warning of the risk of black ice
US3810139A (en) * 1972-11-29 1974-05-07 A Fergusson Temperature responsive signaling device
DE1933436B2 (en) * 1968-07-17 1977-02-17 Zellweger Uster Ag, Uster (Schweiz) Light current flashing warning beacon - is for motorways and uses the motorway telephone supply
DE2704789A1 (en) * 1976-02-04 1977-08-11 Minnesota Mining & Mfg INTERNALLY FEEDING TRAFFIC MANAGEMENT
DE2940205A1 (en) * 1979-10-04 1981-04-16 Karl-Gottfried Dr. 7000 Stuttgart Reinsch Roadside surface ice warning display - uses visual indicator changing in response to ground temp. reaching freezing point
AT370541B (en) * 1978-07-08 1983-04-11 Tekade Felten & Guilleaume LIGHT SIGNALING DEVICE

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1441538A1 (en) * 1964-08-28 1969-05-08 Samson Appbau Ag Road traffic warning signs with an automatic device to indicate the risk or formation of black ice
DE1933436B2 (en) * 1968-07-17 1977-02-17 Zellweger Uster Ag, Uster (Schweiz) Light current flashing warning beacon - is for motorways and uses the motorway telephone supply
DE1963665A1 (en) * 1969-12-19 1971-06-24 Bosch Gmbh Robert Information sign warning of the risk of black ice
US3810139A (en) * 1972-11-29 1974-05-07 A Fergusson Temperature responsive signaling device
DE2704789A1 (en) * 1976-02-04 1977-08-11 Minnesota Mining & Mfg INTERNALLY FEEDING TRAFFIC MANAGEMENT
AT370541B (en) * 1978-07-08 1983-04-11 Tekade Felten & Guilleaume LIGHT SIGNALING DEVICE
DE2940205A1 (en) * 1979-10-04 1981-04-16 Karl-Gottfried Dr. 7000 Stuttgart Reinsch Roadside surface ice warning display - uses visual indicator changing in response to ground temp. reaching freezing point

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2700871A1 (en) * 1993-01-28 1994-07-29 Roger Jean Michel Traffic lights for a coastal roadway liable to flooding
US9808764B2 (en) 2006-06-14 2017-11-07 Fluid Equipment Development Company, Llc Reverse osmosis system with control based on flow rates in the permeate and brine streams

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