DE909668C - Automatic wireless burglar alarm device - Google Patents

Automatic wireless burglar alarm device

Info

Publication number
DE909668C
DE909668C DEF6004A DEF0006004A DE909668C DE 909668 C DE909668 C DE 909668C DE F6004 A DEF6004 A DE F6004A DE F0006004 A DEF0006004 A DE F0006004A DE 909668 C DE909668 C DE 909668C
Authority
DE
Germany
Prior art keywords
transmitter
alarm device
burglar alarm
automatic wireless
receiver
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
DEF6004A
Other languages
German (de)
Inventor
Dipl-Ing Gerhard Foerster
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEF6004A priority Critical patent/DE909668C/en
Application granted granted Critical
Publication of DE909668C publication Critical patent/DE909668C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)

Description

Automatische drahtlose Einbruchsalarm-Vorrichtung Sendeeinrichtungen zu Schutzzwecken bekannter Bauart haben entweder den Nachteil, daß für jeden Sender ein Empfänger notwendig ist oder der Sender z. B. durch Übertragen besonderer Alarmzeichen oder mit Hilfe von Schallplatten teuer ist und leicht zu Störungen Anlaß gibt. Durch die Erfindung sollen diese Mängel beseitigt werden.Automatic wireless burglar alarm device transmitting equipment known design for protection purposes either have the disadvantage that for each transmitter a receiver is necessary or the transmitter z. B. by transmitting special alarm signals or with the help of records is expensive and easily gives rise to malfunctions. By the invention aims to remedy these deficiencies.

Eine automatische drahtlose Einbruchsalarm-Vorrichtung gemäß der Erfindung ist dadurch gekennzeichnet, daß in dem zu sichernden Raum jedes einzelnen Teilnehmers je ein Sender aufgestellt wird, der bei unbefugtem Betreten der Räume in Tätigkeit gesetzt wird und eine bestimmte, diesem Teilnehmer zugewiesene Welle aussendet, und daß in den Räumen der örtlichen Polizei ein Empfänger aufgestellt ist, der das Band der Senderwellen der angeschlossenen Teilnehmer umfaßt und dessen Abstimmorgan durch Motorkraft oder durch elektrische Verstimmung langsam über das ganze Band veränderbar ist. Falls nun einer der Sender, ausgelöst durch unberechtigtes Betreten der gesicherten Räume, in Tätigkeit tritt, wird im Lautsprecher des Polizeiempfängers alle paar Sekunden (je nach Geschwindigkeit des Motors, der die Abstimmvorrichtung betätigt, bzw. je nach der Wobbelfrequenz) ein kurzer Ton hörbar, der den anwesenden Beamten darauf aufmerksam macht, daß bei einem der angeschlossenen Teilnehmer eingerochen worden ist.An automatic wireless burglar alarm device according to the invention is characterized in that in the space to be secured each individual participant a transmitter is set up, which is activated in the event of unauthorized entry of the rooms is set and sends out a certain wave assigned to this participant, and that a receiver has been set up in the premises of the local police, which Band includes the transmitter waves of the connected participants and its voting organ by motor power or by electrical detuning slowly across the entire belt is changeable. If now one of the transmitters, triggered by unauthorized entry of the secured rooms, comes into action, is in the loudspeaker of the police receiver every few seconds (depending on the speed of the motor that drives the tuner pressed, or depending on the wobble frequency) a short tone audible, which the people present Officials pointed out that one of the affiliated participants broke in has been.

Durch Abstellen des Motors bzw. des Wobblers und Einstellen von Hand läßt sich die empfangene Welle und damit der Name und Adresse des hilfsbedürftigen Teilnehmers feststellen.By switching off the motor or the wobbler and adjusting by hand lets the received Welle and thus the name and address of the identify the needy participant.

Claims (1)

PATENTANSPRÜCHE: i. Automatische drahtlose Einbruchsalarm-Vorrichtung, dadurch gekennzeichnet, daß in dem zu sichernden Raum jedes einzelnen Teilnehmers je ein Sender aufgestellt ist, der bei unbefugtem Betreten der Räume in Tätigkeit gesetzt wird und eine bestimmte, diesem Teilnehmer zugewiesene Welle aussendet, und daß in den Räumen der örtlichen Polizei ein Empfänger aufgestellt ist, der das Band der Senderwellen der angeschlossenen Teilnehmer umfaßt und dessen Abstimmorgan durch Motorkraft oder durch elektrische Verstimmung langsam über das ganze Band veränderbar ist. z. Vorrichtung nach: Anspruch i, dadurch gekennzeichnet; daß die Abstimmvorrichtung des Empfängers zur genauen Bestimmung der Wellenlänge eines Senders von Hand bedienbar ist. Angezogene Druckschriften: Deutsche Patentschrift Nr. 329 762. PATENT CLAIMS: i. Automatic wireless burglar alarm device, characterized in that a transmitter is set up in the room to be secured of each individual participant, which is set in action when unauthorized entry into the rooms and emits a certain wave assigned to this participant, and that in the rooms of the local police, a receiver is set up, which includes the band of the transmitter waves of the connected participants and whose tuning element can be slowly changed over the entire band by motor power or by electrical detuning. z. Device according to: Claim i, characterized in that; that the tuning device of the receiver can be operated by hand for the precise determination of the wavelength of a transmitter. Referenced publications: German patent specification No. 329 762.
DEF6004A 1951-04-13 1951-04-13 Automatic wireless burglar alarm device Expired DE909668C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF6004A DE909668C (en) 1951-04-13 1951-04-13 Automatic wireless burglar alarm device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF6004A DE909668C (en) 1951-04-13 1951-04-13 Automatic wireless burglar alarm device

Publications (1)

Publication Number Publication Date
DE909668C true DE909668C (en) 1954-04-22

Family

ID=7084816

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF6004A Expired DE909668C (en) 1951-04-13 1951-04-13 Automatic wireless burglar alarm device

Country Status (1)

Country Link
DE (1) DE909668C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962587C (en) * 1952-11-15 1957-04-25 Wilhelm Kengelbach Fire, accident and safety alarm system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE329762C (en) * 1919-04-08 1920-11-25 Robert R A Hoffmann Reporting procedure for protection purposes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE329762C (en) * 1919-04-08 1920-11-25 Robert R A Hoffmann Reporting procedure for protection purposes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962587C (en) * 1952-11-15 1957-04-25 Wilhelm Kengelbach Fire, accident and safety alarm system

Similar Documents

Publication Publication Date Title
DE2232946C2 (en) Search and call system for locating and / or calling people or objects in different rooms
DE60212826T2 (en) ALARM SYSTEM FOR PERSONAL PROPERTY
DE2838056B1 (en) Locking system for use locks with a key signal transmitter and a key signal receiver
US4196311A (en) Binary-coded message communication
DE909668C (en) Automatic wireless burglar alarm device
DE2424278C3 (en) Monitoring system working with electromagnetic radiation
DE2752959A1 (en) WARNING AND ALARM SYSTEM
DE2437341A1 (en) Anti-intruder room surveillance system - employs several ultrasonic transmitters and control receiver connected via light installation to alarm unit
DE20017187U1 (en) Multifunctional remote monitoring device
DE9200827U1 (en) Active and passive emergency call system for endangered persons within work groups
DE3221452A1 (en) Cableless room surveillance and personal protection system
DE3916614C2 (en)
DE69806799T3 (en) SIGNALING SYSTEM AND METHOD FOR MONITORING THE OPERATION IN A RESTAURANT
DE825827C (en) Arrangement for fire detection and alarm purposes
DE830466C (en) Automatic device for signaling and localizing attempts to break into rooms or incipient fire in rooms
DE2316337A1 (en) ALARM SYSTEM, IN PARTICULAR FOR BURGLAR PROTECTION
DE3300534A1 (en) MONITORING DEVICE
DE2913563A1 (en) Loss-of signal indication in portable transceiver - using threshold detector for monitoring movement of personnel and producing visual or audible indication
DE2535728A1 (en) Ultrasonic burglar alarm units - use oscillator transmitted frequency signal and Doppler shift detection to trigger alarm
DE10015410B4 (en) Monitoring system for swimming pools
DE2723745A1 (en) Acoustic room alarm system - senses predetermined sounds and telephones alarm if they persist beyond certain time
DE2715372A1 (en) Emergency alarm system for personal security - has belt worn unit with warning bell and short wave signal transmitter
DE212015000283U1 (en) Lock device with alarm
DE462079C (en) Device for signal transmission from the inside between in front of and behind the door
DE2362327C3 (en) Alarm system using a communal television antenna system