DE576683C - Safety device for premises with the help of several radiation paths - Google Patents

Safety device for premises with the help of several radiation paths

Info

Publication number
DE576683C
DE576683C DE1930576683D DE576683DD DE576683C DE 576683 C DE576683 C DE 576683C DE 1930576683 D DE1930576683 D DE 1930576683D DE 576683D D DE576683D D DE 576683DD DE 576683 C DE576683 C DE 576683C
Authority
DE
Germany
Prior art keywords
premises
help
safety device
radiation paths
several radiation
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
DE1930576683D
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.)
RUDOLF HASE DR
Original Assignee
RUDOLF HASE 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 RUDOLF HASE DR filed Critical RUDOLF HASE DR
Application granted granted Critical
Publication of DE576683C publication Critical patent/DE576683C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00Burglar, theft or intruder alarms
    • G08B13/18Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181Actuation 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
    • G08B13/183Actuation 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)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Description

Sicherheitsvorrichtung für Räumlichkeiten mit Hilfe von mehreren Strahlungswegen Es sind Anordnungen bekannt, um mit Hilfe von Strahlung einen Raum gegen Betreten zu sichern, bei welchem zur Ausschaltung von Stromschwankungen der Sendelampe der Strahlenweg geteilt und auf zwei Einzelempfänger geleitet wird. . Die beiden letzteren, z. B. Thermoelemente, werden zweckmäßigerweise gegeneinander geschaltet, so daß normalerweise Stromlosigkeit herrscht und nur bei Abblendung des einen Strahlenweges der Differenzstrom auf das Relais wirkt. Die Teilung der Strahlenwege ist schon seit langem bei optischen Photometern üblich, z. B. dem bekannten Hartmannschen Mikrometer, und auch neuerdings auf die lichtempfindlichen Photometer übernommen. Das gleiche Verfahren, nämlich die Verwendung von zwei Strahlenwegen, ist auch schon zur Rauchgasanalyse bzw. zur Raumschutzsicherung angewendet worden. Im Prinzip unter sich gleich, haben diese Anordnungen jedoch den Nachteil, daß kein Alarm ausgelöst wird, wenn auf irgendeine Weise die beiden Strahlenwege gleichzeitig abgeblendet werden, wie es durch mechanische Mittel oder von zwei gut eingeübten Personen möglich erscheint. Auf diese Weise wird also der in schaltungstechnischer Beziehung gewonnene Vorteil der beiden Strahlenwege wieder illusorisch gemacht.Safety device for premises with the help of several radiation paths Arrangements are known to prevent entry into a room with the aid of radiation to secure, in which to switch off current fluctuations of the transmitter lamp the Beam path is divided and directed to two individual receivers. . The latter two, z. B. thermocouples are advantageously switched against each other so that normally there is no current and only when one beam path is dimmed the differential current acts on the relay. The division of the beam paths is nice has long been common in optical photometers, e.g. B. the well-known Hartmannschen Micrometer, and has recently been adopted by light-sensitive photometers. The same procedure, namely the use of two beam paths, is also fine has been used for smoke gas analysis and room protection. In principle under the same, however, these arrangements have the disadvantage that no alarm is triggered if in some way the two beam paths are blocked out at the same time as possible by mechanical means or by two well-trained people appears. In this way, the one obtained in terms of the circuitry is obtained Advantage of the two beam paths made illusory again.

Die Erfindung umgeht diesen Nachteil dadurch, daß Empfangssysteme benutzt werden, welche verschieden große Trägheit gegenüber Änderungen der Bestrahlung besitzen. Diese Trägheit kann z. B., falls es sich um -Wärmestrahlung handelt, durch verschieden große Maße der empfangenden Thermoelemente erzielt werden. Die Trägheit, welche man willkürlich in den einen Teil der Empfangsapparatur einführt, braucht aber nicht notwendigerweise in dem Thermoelement zu liegen. Wenn dieses auch aus technischen Gründen der einfachste Weg ist, so besteht jedoch noch die Möglichkeit, z. B. denjenigen Teil des Empfangsrelais, welcher von dem einen Strahlenweg betätigt wird, mit einer von dem übrigen unterschiedlichen Zeitkonstanten zu versehen. In jedem Fall aber, und das ist das Wesentliche der Erfindung, erfolgen in der Relaisapparatur, an welche die beiden Strahlenwege bzw. Empfangssysteme angeschlossen sind, die Stromimpulse mit . einer gewissen Phasenverschiebung auch dann, wenn die Abschaltung der beiden Strahlenbündel durch irgendein Hindernis zu gleicher Zeit eintreten sollte.The invention avoids this disadvantage in that receiving systems be used, which different degrees of inertia with respect to changes in the irradiation own. This inertia can e.g. B., if it is heat radiation through different sizes of the receiving thermocouples can be achieved. The indolence which one arbitrarily introduces into one part of the receiving apparatus but not necessarily residing in the thermocouple. If this one too is the easiest way for technical reasons, but there is still the possibility z. B. that part of the receiving relay which actuates one of the beam paths is to be provided with a different time constant from the rest. In in any case, and this is the essence of the invention, take place in the relay apparatus, to which the two beam paths or receiving systems are connected, the current pulses with . a certain phase shift even when the shutdown of the two Beams should enter through any obstacle at the same time.

Claims (1)

PATENTANSPRUCH: Sicherheitsvorrichtung für Räumlichkeiten mit Hilfe von mehreren Strahlungswegen, bei welchen mehrere Empfangssysteme vorhanden sind, dadurch gekennzeichnet, daß die Empfangsorgane eine verschieden starke Reaktionsgeschwindigkeit besitzen.PATENT CLAIM: Safety device for premises with help from several radiation paths in which several receiving systems are present, characterized in that the receiving organs have a reaction rate of different strengths own.
DE1930576683D 1930-04-16 1930-04-16 Safety device for premises with the help of several radiation paths Expired DE576683C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE576683T 1930-04-16

Publications (1)

Publication Number Publication Date
DE576683C true DE576683C (en) 1933-05-16

Family

ID=6570019

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930576683D Expired DE576683C (en) 1930-04-16 1930-04-16 Safety device for premises with the help of several radiation paths

Country Status (1)

Country Link
DE (1) DE576683C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1189413B (en) * 1961-01-03 1965-03-18 Pyrotector G M B H Flame measuring and signaling device with a detector and a signal circuit
DE1616017B1 (en) * 1967-01-27 1972-03-09 Hughes Aircraft Co Surveillance system
US4531170A (en) * 1981-05-18 1985-07-23 Tokyo Shibaura Denki Kabushiki Kaisha Combination magnetic head

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1189413B (en) * 1961-01-03 1965-03-18 Pyrotector G M B H Flame measuring and signaling device with a detector and a signal circuit
DE1616017B1 (en) * 1967-01-27 1972-03-09 Hughes Aircraft Co Surveillance system
US4531170A (en) * 1981-05-18 1985-07-23 Tokyo Shibaura Denki Kabushiki Kaisha Combination magnetic head

Similar Documents

Publication Publication Date Title
Canestrari Paced and self-paced learning in young and elderly adults.
Yorukoglu et al. Children not severely damaged by incest with a parent.
Kirchner et al. Differences between better and less-effective supervisors in appraisal of subordinates.
DE576683C (en) Safety device for premises with the help of several radiation paths
FR640115A (en) Electro-magnetic device allowing the practical realization of television
DE2703225A1 (en) Beam interruption smoke detector - has LED's with ring connected power supply arranged round room to focus beams on to central light sensitive receiver
Burnside Loneliness in old age.
Baumeister et al. The interactive effects of stimulus intensity and intelligence upon reaction time.
Adams et al. Data processing capabilities of the human operator.
Vernon The role of deaf teachers in the education of deaf children.
DE507207C (en) Device for activating a line circuit by means of light-sensitive cells switched on in these
DK104916C (en) Pesticide and process for the preparation of thiophosphoric acid or thiophosphonic acid esters for use in the composition.
Parens et al. Accelerated learning responses in young patients with school problems.
USD206419S (en) Solarium
DE842883C (en) Photographic focal plane shutter with two independently running curtains
DE827078C (en) Arrangement for electrical interlockings and other switching devices in railway security
Yoshioka et al. The effect of site plan and social status variables on distance to friends' homes.
DE522840C (en) Device for generating luminous wandering texts for illuminated advertising
DE373765C (en) Electrical room protection system in which alarm circuits or their relays are triggered by changes in the exposure of selenium cells or the like
DE498199C (en) Cinematographic recording apparatus
DE609469C (en) Electro-optical relay system
AT148489B (en) Popular amusement park with corridors arranged like a maze.
DE703128C (en) Lock and alarm device for time control clocks
Beattie et al. Forward masking: Effects of practice and psychophysical technique.
DE511838C (en) Coincidence apparatus for pendulum observation