AU2018100191A4 - Improved Residential Smoke Alarm using 520 Hz square wave audible alarm - Google Patents

Improved Residential Smoke Alarm using 520 Hz square wave audible alarm Download PDF

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Publication number
AU2018100191A4
AU2018100191A4 AU2018100191A AU2018100191A AU2018100191A4 AU 2018100191 A4 AU2018100191 A4 AU 2018100191A4 AU 2018100191 A AU2018100191 A AU 2018100191A AU 2018100191 A AU2018100191 A AU 2018100191A AU 2018100191 A4 AU2018100191 A4 AU 2018100191A4
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Australia
Prior art keywords
alarm
audible
dac
shall
square wave
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AU2018100191A
Inventor
Peter Fell
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Individual
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Individual
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Abstract

The innovation herein described provides a new and more effective audible alarm for smoke alarms installed in residential properties. Most other available residential smoke alarms employ an audible alarm of 3000 Hz which has been proven inefficient at alerting some sectors of the population. The innovative Improved Residential Smoke Alarm will employ an audible warning which shall be a 520Hz square wave. This sound has been proven more effective at alerting children, the elderly, hearing impaired, sleeping, alcohol impaired or drug impaired individuals; thus, saving more lives. The innovative 520 Hz square waveform shall be digitally created inside the Micro-Controller Unit (MCU) and sent to a digital-to-analogue converter (DAC). The output of the DAC shall be connected to a speaker. The DAC can also be used to convey speech or other audible waveforms if required. watchGenFeb18

Description

Improved Residential Smoke Alarms
The purpose of a residential smoke alarm is to alert the home occupants of the presence of a fire by the means of an audible siren. Existing residential smoke alarms employ a 3000 Hz audible alarm.
This improved Residential Smoke Alarm employs a 520 Hz square wave audible alarm that has been proven more effective at alerting children, elderly, hearing impaired, sleeping, alcohol impaired or drug impaired individuals; thus, saving more lives.
The audible alarm may also incorporate voice warnings to further enhance the effectiveness of the warning device.
The Improved Residential Smoke Alarm will detect smoke by the means of a photoelectric sensor. This is common for many residential smoke alarms in use. The innovation described involves the use of a better speaker and sound system. The audible warning shall be a 520Hz square wave. The waveform shall be digitally created inside the MCU and sent to a digital-to-analogue converter (DAC). The output of the digital to analogue converter shall be connected to a speaker. The DAC can also be used to convey speech or other audible waveforms if required.

Claims (2)

  1. The claims defining the innovation are as follows:
    1. An improved residential smoke alarm, providing more effective audible alarms by employing a 520 Hz square wave audible alarm that is digitally generated inside a MicroController Unit (MCU) that is connected to a digital-to-analogue converter (DAC), the output of which is sent to a speaker.
  2. 2. An improved residential smoke alarm, as claimed in Claim 1, may also employ speech or other waveforms to provide an improved audible alarm.
AU2018100191A 2018-02-11 2018-02-11 Improved Residential Smoke Alarm using 520 Hz square wave audible alarm Ceased AU2018100191A4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2018100191A AU2018100191A4 (en) 2018-02-11 2018-02-11 Improved Residential Smoke Alarm using 520 Hz square wave audible alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2018100191A AU2018100191A4 (en) 2018-02-11 2018-02-11 Improved Residential Smoke Alarm using 520 Hz square wave audible alarm

Publications (1)

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AU2018100191A4 true AU2018100191A4 (en) 2018-03-22

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AU2018100191A Ceased AU2018100191A4 (en) 2018-02-11 2018-02-11 Improved Residential Smoke Alarm using 520 Hz square wave audible alarm

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AU (1) AU2018100191A4 (en)

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MK22 Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry