Emergency message transmission method and electronic device implementing the method

• US 8,854,222 B2
• Filed: 04/28/2011
• Issued: 10/07/2014
• Est. Priority Date: 01/17/2011
• Status: Active Grant

• Current Assignee: Hangzhou Hikvision Digital Technology Company Limited
• Original Assignee: Futaihua Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Inventors: Huang, Ren-Wen, Chuang, Tsung-Jen, Wong, Shih-Fang, Li, Cheng-Zhi
• Primary Examiner(s): Wu, Daniel
• Assistant Examiner(s): LITTLEJOHN JR, MANCIL H
• Application Number:
  US13/095,941
• Publication Number:
  US 20120180550A1
• Time in Patent Office: 1,258 Days
• Field of Search: 340/501, 340/511, 340/539.11, 340/539.14, 340/539.15, 340/539.22, 340/539.26, 340/573.1, 340/556, 340/628, 340/629, 340/630, 340/636.12, 340/636.13, 340/636.15, 340/686.1, 73/310.5, 455/404.1, 455/404.2, 455/466, 455/456.5, 455/556.2
• US Class Current: 340/628
• CPC Class Codes: G08B 17/10 Actuation by presence of smoke or gases , e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means

Abstract

The disclosure provides an emergency message transmission method and an electronic device implementing the method. The electronic device stores a reference voltage value and comprises a smoke assessing unit. The method includes steps: capturing air composition around the electronic device, assessing whether the air composition has changed, if the air composition has changed, detecting an electrical current of the smoke assessing unit, amplifying the electrical current and converting the amplified current to a voltage value, comparing the converted voltage value with the reference voltage value, judging whether the converted voltage value reaches the reference voltage value, and if the converted voltage value reaches the reference voltage value, outputting a signal including an emergency message.

Claims

1. An electronic device for transmitting an emergency message, comprising:

a storage unit for storing a reference voltage value;

an output unit for outputting information;

a smoke assessing unit for capturing air composition around the electronic device and assessing whether the air composition has changed;

a current detecting unit for detecting an electrical current of the smoke assessing unit when the smoke assessing unit assesses that the air composition has changed;

a converting unit for amplifying the electrical current and converting the amplified current to a converted voltage value, wherein the converting unit further comprises an amplifier and a resistor, the amplifier is configured for amplifying the electrical current, and the resistor is configured for generating a voltage drop for the amplified current, thereby obtaining the converted voltage value;

a power management unit for comparing the converted voltage value with the reference voltage value from the storage unit; and

a processing unit for judging whether the converted voltage value reaches the reference voltage value, controlling the output unit to output a signal including an emergency message when the converted voltage value reaches the reference voltage value.

2. The electronic device as recited in claim 1, wherein the smoke assessing unit is an ionization type smoke detector.

3. The electronic device as recited in claim 1, wherein the output unit is a speaker, and is configured for generating a warning alarm when the converted voltage value reaches the reference voltage value.

4. The electronic device as recited in claim 1, wherein the output unit is a communication unit, and is configured for sending a wireless signal including the emergency message to another electronic device when the converted voltage value reaches the reference voltage value.