1. Technical Field
The present disclosure relates to an early warning system, and particularly to a system presenting warning messages from sensor information through Internet Protocol television (IPTV) system.
2. Description of Related Art
When an event such as fire or earthquake occurs, warning messages about the event are generally provided by persons such as reporters or civil authorities, while the warning messages are generally provided through broadcasting or through particular devices such as loudspeakers pre-installed in buildings. Hence, the efficiency of providing the warning messages depends on personal factors and the number and manner of disposition of the devices as provided by public authorities. Consequently, providing warning messages cannot be relied upon to inform all persons liable to be affected.
What is needed, therefore, is an early warning system capable of overcoming the limitations described.
Many aspects of the present disclosure can be better understood with reference to the drawings. The components in the drawing(s) are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawing(s), like reference numerals designate corresponding parts throughout the several views.
In the illustrated embodiment, the event control module 200 includes a control panel 210 and sensors 220. The control panel 210 produces status information Is (not shown) according to the parameters detected by the sensors 220. The sensors 220 are fire sensors such as heat sensors or smoke sensors which react to air temperature and/or smoke density. In other embodiments, the event control module 200 can merely include the sensors 220 which are capable of producing the status information Is on their own account. In addition, the sensors 220 can be climate sensors such as thermometers or anemometers, seismometers (earthquake sensors) or pernicious gas sensors, or security sensors such as pan tilt zoom (PTZ) cameras or thermal imaging cameras, in which parameters relating to climate, earthquakes, floods, or security situations may be preset. Furthermore, the status information Is can be provided by a third-party service provider such as an observatory.
The input unit 110 receives the status information Is from the event control module 200. The transformation unit 120 produces event information Ie (not shown) according to the status information Is, and transforms the event information Ie into a first multimedia signal S1 (not shown) which includes a multimedia data stream of one cable television channel. In the illustrated embodiment, since the status information Is includes temperature and/or smoke density which indicates a fire, the transformation unit 120 determines the location of the fire and the fire alarm level of the fire which is determined by, for example, the intensity or the extent (size) of the fire according to the status information Is, produces the event information Ie by converting the location and the fire alarm level of the fire into texts, images, and/or voice messages, and uses H.264 (that is, MPEG-4 Part 10 or AVC (Advanced Video Coding)) standard to encode the event information Ie into the first multimedia signal S1. In other embodiments, the status information Is can include other types of information such as parameters with regard to climate, earthquakes, floods, or security issues, and another type of video/audio compression standard such as JPEG can be used to encode the event information Ie. The output unit 130 transmits the first multimedia signal S1 to the information appliance device 300 through the Ethernet network 1000.
The information appliance device 300 is connected to a display device 3000 such as a television set or a monitor. The information appliance device 300 can be an IPTV set-top box which contains a tuner for turning video signals into content which can be displayed on a display device. The information appliance device 300 transforms the first multimedia signal S1 into a second multimedia signal S2 corresponding to the cable television channel which can be displayed through the display device 3000. In the illustrated embodiment, the information appliance device 300 uses the H.264 standard to decode the first multimedia signal S1 into the second multimedia signal S2.
In the illustrated embodiment, for a home application, the transformation unit 120 of the server 100 can produce the event information Ie according to evacuation route information, fire-fighting equipment location information, evacuation/shelter/refuge suggestion information, and/or scene status information with respect to the fire which is produced by, for example, a pre-built database or a third-party service provider, such that the evacuation route, the fire-fighting equipment location, evacuation/shelter/refuge suggestion, and/or scene status of the fire can be shown through the interstitial channel 3200. In other embodiments, for a fire-fighting department, the transformation unit 120 can produce the event information Ie according to fire fighting truck route information, water source location information, meteorology information, and/or scene status information useful to that department with respect to a fire. For the police department, the transformation unit 120 can produce the event information Ie according to police patrol car route information, traffic control information, and/or scene status information to facilitate police action. For a hospital application, the transformation unit 120 can produce the event information Ie according to ambulance route information, medical resource information, and/or scene status information useful to a medical authority with respect to medical relief.
In step S1110, a determination is made as to whether the status information Is is received from the event control module 200. If yes, step S1120 is implemented; otherwise, the method is terminated.
In step S1120, the event information Ie is produced according to the status information Is. In the illustrated embodiment, the status information Is includes fire sensor parameters such as temperature and smoke density. In addition, for a home application, the event information Ie is produced according to evacuation route information, fire-fighting equipment location information, evacuation/shelter/refuge suggestion information, and/or scene status information with respect to the fire, such that the evacuation route, the fire-fighting equipment location, evacuation/shelter/refuge suggestion, and/or scene status of the fire can be shown through a interstitial channel displayed in a smaller sub-screen at the top (or as appropriate) of the main screen of the display device 3000. In other embodiments, the status information Is can include another type of information such as parameters with regard to climate, or security issues.
In step S1130, the event information Ie is transformed into the first multimedia signal S1 corresponding to one cable television channel. In the illustrated embodiment, H.264 standard is used to encode the event information Ie into the first multimedia signal S1. In other embodiments, another type of video/audio compression standard can be used to encode the event information Ie.
In step S1140, the first multimedia signal S1 is transmitted through a computer network such as Ethernet network.
The early warning system and the early warning method utilize IPTV system to present warning messages with regard to the parameters of sensors. Through automatically presenting warning messages with regard to the parameters of sensors in such a popular medium, the warning messages about an event such as a fire can be provided in a direct and automatic manner. Hence, the efficiency to provide the warning messages is enhanced. As a result, for a home user, the warning messages can be obtained in a convenience way. In addition, for professional users such as fire fighters, polices, or medical staffs, essential information about their actions can also be obtained in a simple way.
While the disclosure has been described by way of example and in terms of preferred embodiment, the disclosure is not limited thereto. On the contrary, it is intended to cover various modifications and similar arrangements as would be apparent to those skilled in the art. Therefore the range of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and similar arrangements.
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