DE373765C - Electrical room protection system in which alarm circuits or their relays are triggered by changes in the exposure of selenium cells or the like - Google Patents

Electrical room protection system in which alarm circuits or their relays are triggered by changes in the exposure of selenium cells or the like

Info

Publication number
DE373765C
DE373765C DEL54454D DEL0054454D DE373765C DE 373765 C DE373765 C DE 373765C DE L54454 D DEL54454 D DE L54454D DE L0054454 D DEL0054454 D DE L0054454D DE 373765 C DE373765 C DE 373765C
Authority
DE
Germany
Prior art keywords
protection system
exposure
changes
room
relays
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
Application number
DEL54454D
Other languages
German (de)
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.)
KURT LEWIN DR
Original Assignee
KURT LEWIN DR
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 KURT LEWIN DR filed Critical KURT LEWIN DR
Priority to DEL54454D priority Critical patent/DE373765C/en
Application granted granted Critical
Publication of DE373765C publication Critical patent/DE373765C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Description

Elektrische Haumschutzanlage, bei welcher Alarmstromkreise bzw. deren Relais durch Belichtungsänderungen von Selenzellen o. dgl. zum Ansprechen gebracht werden. Die Erfindung bezieht sich auf elektrische Raumschutzan)lagen derjenigen Art, bei welcher Alarmstromkreise bzw. deren Relais durch Belichtungsänderungen von Selenzellen o. dgI. derart zum Ansprechen gebracht werden, @daß .eine den gesicherten Raum unbefugt betretende Person selbst .diese Belichtungsänderungen durch die von ihrem Körper ausgehende Beschattung hervorrufen muß.Electrical skin protection system, in which alarm circuits or their Relay caused by changes in exposure of selenium cells or the like will. The invention relates to electrical room protection systems of those Type in which alarm circuits or their relays are caused by changes in exposure of selenium cells or similar be made to respond in such a way that .one the secured Unauthorized person entering the room. These changes in exposure due to the must cause shadowing emanating from their body.

Der Erfindung gemäß ist nun die Anordnung im Gegensatz zu den bekannten Sicherheitsvorrichtungen dieser Art derart getroffen worden, daß :das die Auslösung der Alarmvorrichtung bewirkende gerichteteLi@chtstrahlen!bündel, in dessen Strahlenweg der Körper ganz oder teilweise sich begeben muß, um die Alarmwirkung auszulösen, praktisch unsichtbar gemacht wird. Dies kann der Erfindung,; gemäß einmal dadurch geschehen, daß die übrige Raumbeleuchtung .derart stark gehalten ist, daß das Licht der auf die Selenzelle unmittelbar einwirkenden Zusatzlichtquelle übertönt wird. Ferner bzw. gleichzeitig kann dieses Licht für das menschliche Auge durch vor die Zusatzlichtquelle mittelbar oder unnnittelbar zu bringende Lichtfilter, farbige Glasscheiben, 'farbige Glasbirnen .der Glühlampen u. dgl., die die sichtbaren Lichtstrahlen ganz oder teilweise nicht hindurchlassen, die auf die Sel'enzellen o. dgl. hauptsächlich einwirkenden Strahlen aber nicht wesentlich; abschwächen, ganz oder teilweise unsichtbar gemacht werden.According to the invention, the arrangement is now in contrast to the known Safety devices of this type have been made in such a way that: the triggering directed bundles of light rays causing the alarm device, in its beam path the body has to move completely or partially in order to trigger the alarm effect, is made practically invisible. The invention can do this; according to once through happen that the rest of the room lighting is kept so strong that the light the additional light source directly acting on the selenium cell is drowned out. Furthermore, or at the same time, this light can pass through to the human eye Additional light source, colored light filters that can be brought indirectly or not Panes of glass, colored glass bulbs, incandescent lamps and the like, which emit the visible rays of light not let through in whole or in part, which mainly affect the selenium cells or the like acting rays but not essential; attenuate, completely or partially invisible be made.

Als Lichtfilter werden einer Ausf"uhrungsart der Erfindung gemäß z. B. Platten o. dgl, benutzt, die hauptsächlich ultrarote Strahlen hindwrchlassen, wie beispielsweise dünne Platten aus. Hartgumnrnli.As a light filter, one embodiment of the invention according to z. B. plates o. The like, used, which mainly allow ultrared rays to prevent such as thin plates. Hartgumnrnli.

Einer weiteren Ausführungsart der Erfindung gemäß wird die Zusatzlichtquelle zugleich als Markierungslampe für in demselben Raum aufgestellte Feuermelder, Hydranten, Notausgänge o. dgl. ausgebildet, so daß dadurch: der eigentliche Hauptzweck ;dieser zusätzlichen Lichtquelle für Uneingeweihte verborgen wird.According to a further embodiment of the invention, the additional light source at the same time as a marker lamp for fire alarms, hydrants set up in the same room, Emergency exits or the like formed, so that thereby: the actual main purpose; this additional light source is hidden from the uninitiated.

Claims (3)

PATENTANSPRÜCHE: z. Elektrische Raumschxtzanlage, bei welcher Alarmstromkreise bzw. deren Relais durch BeliclAungsänderungen von S'elenzellen o. dgl. zum Ansprechen gebracht werden, indem eine dem gesicherten Raum . unbefugt betretende Person diese Belichtungsänderungen durch die von ihrem Körper ausgehende Beschattung hervorruft, dadurch, gekennzeichnet, daß das die Auslösung der Alarmvorrichtung bewirkende Lichtstrahlenbündel, in dessen Strahlenweg sich der Körper begeben muß, tun die Alarmwirkung auszulösen, praktisch von der entsprechend bemessenen allgemeinen Raumheleuchtung übertönt wird. PATENT CLAIMS: e.g. Electric Raumschxtzanlage, in which alarm circuits or their relays through changes in exposure of S'elenzellen or the like. To respond be brought by one to the secured room. unauthorized person entering this Causes changes in exposure due to the shading emanating from your body, characterized in that the light beam causing the triggering of the alarm device, in whose radiation path the body must go, do the alarm effect, practically from the appropriately sized general room lighting is drowned out. 2. Elektrische Raumschutzanlage nach Anspruch i, dadurch gekennzeichnet, daß das Licht der Zusatzlichtquelle durch Lichtfilter, farbige Glasscheiben u. d@gl. praktisch unsichtbar gemacht wird. 2. Electrical room protection system according to claim i, characterized in that that the light of the additional light source through light filters, colored glass panes, etc. is made practically invisible. 3. Raumschutzanlage nach Anspruch dadurch gekennzeichnet, daß hauptsächlich ultrarote Strahlen hindurchlassende Lichtfilter, z. B. dünne Hartgummischeiben, verwendet werden. q.. Raumschutzanlage nach Anspruch x bis 3, dadurch gekennzeichnet, daß die Zusatzlichtquelle, welche auf die Selenzellen o. dgl. wirkt, als Markierlampe für Notausgänge, Feuermelder, Hydranten o. dgl. maskiert isst.3. Room protection system according to claim, characterized in that that mainly ultra-red rays transmitting light filters, e.g. B. thin hard rubber washers, be used. q .. Room protection system according to claim x to 3, characterized in that that the additional light source, which acts on the selenium cells or the like, acts as a marking lamp Eats masked for emergency exits, fire alarms, hydrants or the like.
DEL54454D 1921-12-04 1921-12-04 Electrical room protection system in which alarm circuits or their relays are triggered by changes in the exposure of selenium cells or the like Expired DE373765C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL54454D DE373765C (en) 1921-12-04 1921-12-04 Electrical room protection system in which alarm circuits or their relays are triggered by changes in the exposure of selenium cells or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL54454D DE373765C (en) 1921-12-04 1921-12-04 Electrical room protection system in which alarm circuits or their relays are triggered by changes in the exposure of selenium cells or the like

Publications (1)

Publication Number Publication Date
DE373765C true DE373765C (en) 1923-04-16

Family

ID=7276181

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL54454D Expired DE373765C (en) 1921-12-04 1921-12-04 Electrical room protection system in which alarm circuits or their relays are triggered by changes in the exposure of selenium cells or the like

Country Status (1)

Country Link
DE (1) DE373765C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432112A1 (en) * 1994-09-09 1996-03-14 Hella Kg Hueck & Co Light barrier for monitoring vehicle windscreen or window

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432112A1 (en) * 1994-09-09 1996-03-14 Hella Kg Hueck & Co Light barrier for monitoring vehicle windscreen or window

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