CH556070A - ROOM PROTECTION SYSTEM WITH AT LEAST ONE ULTRASONIC TRANSMITTER AND AT LEAST ONE ULTRASOUND RECEIVER. - Google Patents

ROOM PROTECTION SYSTEM WITH AT LEAST ONE ULTRASONIC TRANSMITTER AND AT LEAST ONE ULTRASOUND RECEIVER.

Info

Publication number
CH556070A
CH556070A CH921973A CH921973A CH556070A CH 556070 A CH556070 A CH 556070A CH 921973 A CH921973 A CH 921973A CH 921973 A CH921973 A CH 921973A CH 556070 A CH556070 A CH 556070A
Authority
CH
Switzerland
Prior art keywords
protection system
ultrasonic transmitter
ultrasound receiver
room protection
room
Prior art date
Application number
CH921973A
Other languages
German (de)
Original Assignee
Cerberus 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 Cerberus Ag filed Critical Cerberus Ag
Priority to CH921973A priority Critical patent/CH556070A/en
Priority to DE19742423277 priority patent/DE2423277C2/en
Publication of CH556070A publication Critical patent/CH556070A/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
    • G08B13/1609—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems
    • G08B13/1618—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means
    • G08B13/1627—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems using ultrasonic detection means using Doppler shift detection circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
CH921973A 1973-06-25 1973-06-25 ROOM PROTECTION SYSTEM WITH AT LEAST ONE ULTRASONIC TRANSMITTER AND AT LEAST ONE ULTRASOUND RECEIVER. CH556070A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH921973A CH556070A (en) 1973-06-25 1973-06-25 ROOM PROTECTION SYSTEM WITH AT LEAST ONE ULTRASONIC TRANSMITTER AND AT LEAST ONE ULTRASOUND RECEIVER.
DE19742423277 DE2423277C2 (en) 1973-06-25 1974-05-14 Room protection system that works with ultrasound according to the Doppler principle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH921973A CH556070A (en) 1973-06-25 1973-06-25 ROOM PROTECTION SYSTEM WITH AT LEAST ONE ULTRASONIC TRANSMITTER AND AT LEAST ONE ULTRASOUND RECEIVER.

Publications (1)

Publication Number Publication Date
CH556070A true CH556070A (en) 1974-11-15

Family

ID=4349634

Family Applications (1)

Application Number Title Priority Date Filing Date
CH921973A CH556070A (en) 1973-06-25 1973-06-25 ROOM PROTECTION SYSTEM WITH AT LEAST ONE ULTRASONIC TRANSMITTER AND AT LEAST ONE ULTRASOUND RECEIVER.

Country Status (2)

Country Link
CH (1) CH556070A (en)
DE (1) DE2423277C2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0113512B1 (en) * 1982-12-02 1987-04-22 LUCAS INDUSTRIES public limited company Motion detection systems

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE759559A (en) * 1969-12-03 1971-04-30 Cerberus Ag DEVICE TO DETECT FIRE OR FLAMES
CH537066A (en) * 1971-04-08 1973-05-15 Cerberus Ag Flame detector
US3801977A (en) * 1971-12-07 1974-04-02 Gulf & Western Mfg Co Ultrasonic alarm circuit

Also Published As

Publication number Publication date
DE2423277A1 (en) 1975-01-16
DE2423277C2 (en) 1982-06-16

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Legal Events

Date Code Title Description
PL Patent ceased