SE8503455L - Babyphone - Google Patents

Babyphone

Info

Publication number
SE8503455L
SE8503455L SE8503455A SE8503455A SE8503455L SE 8503455 L SE8503455 L SE 8503455L SE 8503455 A SE8503455 A SE 8503455A SE 8503455 A SE8503455 A SE 8503455A SE 8503455 L SE8503455 L SE 8503455L
Authority
SE
Sweden
Prior art keywords
alarm
frequency
detector
baby
switch
Prior art date
Application number
SE8503455A
Other languages
Swedish (sv)
Other versions
SE8503455D0 (en
SE461815B (en
Inventor
Peter Lundh
Original Assignee
Peter Lundh
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 Peter Lundh filed Critical Peter Lundh
Publication of SE8503455D0 publication Critical patent/SE8503455D0/en
Publication of SE8503455L publication Critical patent/SE8503455L/en
Publication of SE461815B publication Critical patent/SE461815B/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0219—Circuit arrangements
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
    • G08B21/0225—Monitoring making use of different thresholds, e.g. for different alarm levels

Landscapes

  • Health & Medical Sciences (AREA)
  • Child & Adolescent Psychology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Alarm Devices (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

Baby alarm with detector (4) which consists of a series of AGC circuits (6), frequency to OC-voltage converter (7), comparator (8) with frequency references (9), a number of frequency bands going through time integrators (10) and bistable multivibrators (11) connected to a decoder (12) adjustable through the switch (13) and activatable to the alarm. The detector (4) activates the alarm on the basis of the frequency content of the inbound acoustic signal from the environment. As a consequence an adjustable threshold, which determines the sensitivity and reach of the alarm, is not necessary, and the switch (13) can be used to choose individual frequency bands corresponding to the babble, crying, and cries of the baby.<IMAGE>
SE8503455A 1984-08-31 1985-07-12 Baby alarm SE461815B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK416684A DK151738C (en) 1984-08-31 1984-08-31 Baby Control

Publications (3)

Publication Number Publication Date
SE8503455D0 SE8503455D0 (en) 1985-07-12
SE8503455L true SE8503455L (en) 1986-03-01
SE461815B SE461815B (en) 1990-03-26

Family

ID=8130901

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8503455A SE461815B (en) 1984-08-31 1985-07-12 Baby alarm

Country Status (2)

Country Link
DK (1) DK151738C (en)
SE (1) SE461815B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE21791370T1 (en) * 2020-10-15 2023-03-23 Security Alarms & Co. S.A. DEVICES AND SYSTEM

Also Published As

Publication number Publication date
DK151738B (en) 1987-12-28
DK416684A (en) 1986-03-01
SE8503455D0 (en) 1985-07-12
DK151738C (en) 1988-06-13
DK416684D0 (en) 1984-08-31
SE461815B (en) 1990-03-26

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