DE836498C - Remote switching of room controls in electro-acoustic call and alarm systems - Google Patents

Remote switching of room controls in electro-acoustic call and alarm systems

Info

Publication number
DE836498C
DE836498C DEL1597A DEL0001597A DE836498C DE 836498 C DE836498 C DE 836498C DE L1597 A DEL1597 A DE L1597A DE L0001597 A DEL0001597 A DE L0001597A DE 836498 C DE836498 C DE 836498C
Authority
DE
Germany
Prior art keywords
remote switching
alarm systems
electro
room controls
call
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
DEL1597A
Other languages
German (de)
Inventor
Konrad Bartels
Fritz Scherer
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.)
Alcatel Lucent Deutschland AG
Original Assignee
Standard Elektrik Lorenz AG
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 Standard Elektrik Lorenz AG filed Critical Standard Elektrik Lorenz AG
Priority to DEL1597A priority Critical patent/DE836498C/en
Application granted granted Critical
Publication of DE836498C publication Critical patent/DE836498C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)

Description

Ilektro-akustische Ruf- und Alarmanlagen, die nicht nur zum Zweck der Alarmabgabe, sondern auch zur zwischenzeitlichen Übertragung unterhaltender oder belehrender Programme benutzt werden, sind für den letzteren Zweck vielfach mit abschaltbaren Saalreglern ausgestattet, die es im Beschallungsraum des Lautsprechers ermöglichen, eine geringere Lautstärke einzustellen, als sie für Ruf- und Alarmdurchsagen vorgesehen ist. Wird die elektroakustische Anlage für einen Alarm benötigt, so muß diese Lautstärkeverminderung rückgängig gemacht werden. Die Rückstellung der Saalregler kann von Hand erfolgen, bedarf dazu jedoch einer gesonderten Benachrichtigung. Andere Verfahren sind bisher nicht bekanntgeworden.Ilectro-acoustic call and alarm systems that are not just for the purpose the alarm delivery, but also entertaining for the interim transmission or educational programs are used for the latter purpose in many ways Equipped with switchable hall controls, which are in the sound reinforcement room of the loudspeaker make it possible to set a lower volume than for call and alarm announcements is provided. If the electroacoustic system is required for an alarm, it must this reduction in volume can be reversed. The resetting of the hall regulator can be done by hand, but requires separate notification. Other Processes have not yet become known.

Zur Vermeidung dieser Nachteile wird zur Fernschaltung von Saalreglern in elektroakustischen Ruf- und Alarmanlagen erfindungsgemäß vorgeschlagen, die lautstärkemindernde Funktion des Reglers ' durch relaisgesteuerte Kontakte aufzulieben. Die Erfindung hat den Vorteil, daß die gesamte Ruf- und Alarmanlage automatisch einsatzbereit gemacht wird. Es können ein oder mehrere Relais verwendet werden.To avoid these disadvantages, room controls are switched remotely proposed according to the invention in electroacoustic call and alarm systems, the volume-reducing The function of the controller is to be enhanced by relay-controlled contacts. The invention has the advantage that the entire call and alarm system is automatically ready for use is made. One or more relays can be used.

Die Abbildung zeigt eine Schaltskizze für ein Ausführungsbeispiel der neuen Anordnung. Zur Regelung des Lautsprechers L dient ein in der üblichen Weise als L-Glied ausgebildeter Saalregler, der aus den Zweigwiderständen R1 und R2 besteht. Um für eine Alarmdurchgabe den Saalregler außer Funktion setzen zu können, ist ein Relais A vorhanden, das einen Arbeitskontakt a1 und einen Ruhekontakt a= besitzt. Ist der Saalregler in Funktion, so ist der Kontakt a1 offen und ermöglicht damit einen Spannungsabfall des Widerstandes R1. Der Kontakt a2 ist geschlossen und ermöglicht so einen Stromdurchgang durch den `'Widerstand R, Bei Fernausschaltung dieses Saalreglers zieht das Relais A an, schließt den Kontakt a1 und öffnet den Kontakt a, Damit erhält der Lautsprecher L volle Steuerspannung aus der Leitung a-b. Es ist grundsätzlich möglich, das Relais A als Ruhe- oder als Arbeitsrelais auszuführen. Vorteilhaft werden die Relais so geschaltet, daß für die Programmgestaltung ein Arbeitskontakt und für die Alarmdurchgabe ein Ruhekontakt benutzt wird.The figure shows a circuit diagram for an exemplary embodiment the new arrangement. To regulate the loudspeaker L is used in the usual Way as an L-member designed hall regulator, which consists of the branch resistors R1 and R2 exists. In order to be able to deactivate the room controller for an alarm transmission, there is a relay A which has a normally open contact a1 and a normally closed contact a = owns. If the hall regulator is in function, contact a1 is open and enabled thus a voltage drop of the resistor R1. Contact a2 is closed and thus enables current to pass through the '' resistor R, when switched off remotely this room regulator picks up relay A, closes contact a1 and opens the Contact a, so that the loudspeaker L receives full control voltage from the line away. It is basically possible to use relay A as a resting or working relay to execute. The relays are advantageously switched so that the program can be used a normally open contact and a normally closed contact is used to transmit the alarm.

Claims (3)

PATEN "rANSPEÜCHE: i. Fernschaltung von Saalreglern in elektroakustischen Ruf- und Alarmanlagen, dadurch gekennzeichnet, daß die lautstärkemindernde Funktion des Reglers durch von einem oder mehreren Relais gesteuerte Kontakte aufgehoben werden kann. PATENT REQUESTS: i. Remote switching of room controls in electroacoustic Call and alarm systems, characterized in that the volume-reducing function of the controller is canceled by contacts controlled by one or more relays can be. 2. Fernschaltung von Saalreglern nach Anspruch i, dadurch gekennzeichnet, daß bei der Verwendung von L-Gliedern der in der Leitung liegende Teil (R1) durch einen Relaiskontakt kurzgeschlossen und der parallel zum Lautsprecher liegende Teil (R2) durch einen weiteren Relaiskontakt abgeschaltet werden kann. 2. Remote switching of hall regulators according to claim i, characterized in that that when using L-members the part (R1) lying in the line through short-circuited a relay contact and the part lying parallel to the loudspeaker (R2) can be switched off by another relay contact. 3. Fernschaltung von Saalreglern nach Anspruch 2, dadurch gekennzeichnet, daß zur Abschaltung des L-Gliedes ein Arbeits- und ein Ruhekontakt eines Relais dienen.3. Remote control of hall regulators according to claim 2, characterized in that to switch off the L-element a working and a normally closed contact of a relay are used.
DEL1597A 1950-04-04 1950-04-04 Remote switching of room controls in electro-acoustic call and alarm systems Expired DE836498C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL1597A DE836498C (en) 1950-04-04 1950-04-04 Remote switching of room controls in electro-acoustic call and alarm systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL1597A DE836498C (en) 1950-04-04 1950-04-04 Remote switching of room controls in electro-acoustic call and alarm systems

Publications (1)

Publication Number Publication Date
DE836498C true DE836498C (en) 1952-04-15

Family

ID=7255474

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL1597A Expired DE836498C (en) 1950-04-04 1950-04-04 Remote switching of room controls in electro-acoustic call and alarm systems

Country Status (1)

Country Link
DE (1) DE836498C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3312304A1 (en) * 1983-04-06 1984-10-11 Neumann Elektronik GmbH, 4330 Mülheim Device for automatically switching the output level of a power amplifier
US4935735A (en) * 1985-01-31 1990-06-19 Motorola, Inc. Selective call radio receiver silent alert mode entry system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3312304A1 (en) * 1983-04-06 1984-10-11 Neumann Elektronik GmbH, 4330 Mülheim Device for automatically switching the output level of a power amplifier
US4935735A (en) * 1985-01-31 1990-06-19 Motorola, Inc. Selective call radio receiver silent alert mode entry system

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