KR20090112366A - Care Zone system at the base of ZigBee for the prevention of kidnapping and sex crimes - Google Patents

Abstract

PURPOSE: A Zigbee base care zone system and a method for preventing kid napping and sex assault are provided to manage children safety by supplying information such as location and emergency situation to a protector. CONSTITUTION: A Zigbee base care zone system and a method for preventing kid napping and sex assault include a mobile Zigbee terminal(11), a static Zigbee base station(12), a Zigbee master(13) and an amber integrated management system(14). The mobile Zigbee terminal transmits the identification of children at specific time interval by adhering to a bag or cloth of the children. The static Zigbee base station receives identification of the ZIgbee terminal and RSSI.

Description

Care Zone system at the base of ZigBee for the prevention of kidnapping and sex crimes}

The present invention builds accurate location information system and ZigBee based ZigBee based Care Zone Amber System, and implements ZigBee efficient algorithm for efficient transmission of protocol data and ZigBee terminal safety mode low power management system. Build. It also has a police ZigBee terminal, which allows police to locate mobile ZigBee terminals while moving.

 In the background of the present invention, Bluetooth can connect up to 7 devices per node, but ZigBee can connect up to 255 devices per node, and up to 65,000 nodes can be extended and Class 1 or Class 2 The transmission distance of 100m or 10m and the maximum transmission speed of 723Kbps (1Mbps in general notation) is up to 30m indoors and 100m outdoors, and the maximum transmission speed of 250Kbps. The biggest feature of ZigBee is low power consumption. ZigBee chip uses low power technology (UWB power consumption is 200mW and WLAN power consumption is 1W) with 20mA power consumption when operating. ZigBee uses DSSS ( Direct Sequence Spread Spectrum) is used, and ZigBee's protocol stack size does not exceed 32kbytes. The ZigBee stack consists of several layers, each of which provides specific services to the upper and lower layers, and sends and receives data. In the IEEE 802.15.4 standard, the PHY layer and the MAC sub-layer The ZigBee alliance defines two layers: the ZigBee Alliance for the Application Layer, which includes the Network Layer, the Application Support Sub-layer, the ZigBee Device Object, and the Application Object. Defined for the framework. The PHY layer defined by IEEE 802.15.4 has three frequency ranges of 868 MHz, 915 MHz, and 2.4 GHz. 868 MHz is used in Europe, 915 MHz is used in the US and Australia, and 2.4 GHz is used worldwide. Band, 27 channels). The ZigBee PHY uses a lower data rate than the PHY of a conventional wireless communication system, so it has a simple structure, the MAC sublayer accesses the wireless channel using the CSMA-CA mechanism, and the coordinator is located within the same personal network area (PAN). Superframe which can broadcast the beacon frame to devices periodically and divides the time between two consecutive beacon frames into ACTIVE section and INACTIVE section. There is a structure, among which access to the channel is allowed only during the active period, and in the inactive period, all devices operate in the sleep mode, thereby enabling low power consumption of the device. The ZigBee NWK (Network) layer has a coordinator that is responsible for mechanisms such as joining or leaving the network, providing security for transmission frames, routing to nodes that want to send frames, and There is a series of end-devices that operate by connecting wirelessly to the coordinator. The ZigBee Application Layer is composed of Application Framework, ZDO, Application Sublayer, and the ZigBee Application Layer maintains and manages bindings and binding tables between devices based on the services and requests provided by the devices, and message forwarding between devices. ZDO is responsible for defining the role of devices in the network, handling binding requests between network devices, establishing security relationships between devices, and discovering devices in the network and determining the application services they provide. to provide.

 An object of the present invention is to construct a low-cost and efficient ZigBee system, and to provide safeguards for infants and young children by providing information such as location and emergency situation to the guardian in real time, as well as preventing child abduction and sexual crime. Provides real-time service of location information of children who have mobile ZigBee terminal through SMS or internet. ZigBee technology consumes less power than other technologies such as RFID, Bluetooth, and wireless LAN, and is inexpensive, easy to use, and has many channels. Is a suitable technique.

  In order to achieve the above object, the present invention has a low-power, ultra-compact, ultra-lightweight user mobile ZigBee terminal, fixed ZigBee base station, ZigBee master, AMBER integrated management system to build a data collection and transmission control device, ZigBee-based Care Zone Amber System And the ZigBee system at a certain distance from the Care Zone Network network, the terminal is distributed to the user, and the system is configured to identify the real-time location of the user and inform the guardian. It also features a ZigBee terminal for police when a child is missing, so that the missing child can be found quickly.

  The present invention enables the construction of a ZigBee-based Care Zone system and the construction of a system for preventing child abduction and sexual crimes and the construction of an accurate location information system through ZigBee. A low power mobile ZigBee system can be established through PCM, and efficient data transfer can be achieved through efficient algorithm development. It is possible to secure technological competitiveness through localization and self-development of chipset, which is a major component, by building a safe mode low power management system for mobile ZigBee terminals.

 The present invention implements a mobile ZigBee terminal, a fixed ZigBee base station, a ZigBee master, and an Amber integrated management system based on a compact, low-power ZigBee system. It also implements a ZigBee terminal for police that can be carried by police officers when they are missing or attached to vehicles and toll gates. Hereinafter, with reference to the embodiment shown in the drawings will be described according to the ZigBee-based Care Zone system for the prevention of kidnapping and sex crimes.

1 is a configuration diagram of a ZigBee-based Care Zone system for real-time tracking the location of the child to inform parents of the location via a mobile phone text or the Internet and to notify the police in case of emergency.

Referring to the drawings, the mobile ZigBee terminal 11 is attached to the bag, clothes, body parts of the child sends out the child's ID at regular intervals.

The fixed ZigBee base station 12 receives the ID and RSSI (received signal strength indicator) of the mobile ZigBee terminal 11 transmitted at regular time intervals and receives the ID of the mobile ZigBee terminal 11 and the fixed ZigBee base station ( ID of 12) is transmitted wirelessly to the ZigBee master (13). At this time, data can be sent to the ZigBee master 13 or the Amber integrated management system 14 by wire.

The ZigBee master 13 can check the location information of which stationary ZigBee base station the child is located with the mobile ZigBee terminal data from the fixed ZigBee base station.

Amber integrated management system (14) can monitor the location information of children identified from ZigBee master (13) in real time, by using a variety of content to send text messages to parents to mobile phones or to check the location on the Internet and emergency In case of a situation, the police will be notified or the child's ID and personal information will be provided.

2 is a block diagram of a mobile ZigBee terminal 11 when a child having a mobile ZigBee terminal 11 is missing in an area where a Care Zone system is not installed.

Referring to the drawings, the police ZigBee terminal (S1) is the same as the ID of the mobile ZigBee terminal (11) previously entered when the mobile ZigBee terminal (11) enters the reception area (S2), alarm and child identification information Is displayed on the LCD. Since the reception area S2 is within a few tens to hundreds of meters, it means that the missing child is near the police ZigBee terminal. Therefore, the police ZigBee terminal (S1) can easily find a missing child when used in police officers, police vehicles, security company vehicles, toll gates.

3 is an algorithm for informing a battery replacement time of the mobile ZigBee terminal 11.

Referring to the drawings, transmission information 111 of the mobile ZigBee terminal 11 includes U_ID (mobile ZigBee terminal ID), Battery_State, and Battery_Alarm.

The mobile ZigBee terminal 11 always checks 112 the battery consumption, and transmits 113 the U_ID and the Battery_Alarm to the fixed ZigBee base station when the battery consumption is below the reference point (battery replacement time). In addition, when the battery consumption is above the reference point (battery replacement time), U_ID and Battery_State are sent to the fixed ZigBee base station (114). Battery_State represents the current consumption of the battery, Battery_Alarm is a command to generate an alarm.

4 is a data transmission algorithm of a fixed ZigBee base station.

Referring to the drawing, the fixed ZigBee base station 12 has U_ID (mobile ZigBee terminal ID) and B_ID (fixed ZigBee base station ID) as fixed ZigBee base station transmission information 211. At this time, the U_ID includes information of the RSSI (received signal strength indicator). If the mobile ZigBee terminal 11 is in the reception area of the fixed ZigBee base station, that is, Near U_ID receive (212) receives the U_ID (mobile ZigBee terminal ID). The received U_ID (mobile ZigBee terminal ID) is sent to the ZigBee master together with B_ID (fixed ZigBee base station ID) (213).

If no U_ID is received, the neighbor is searched, that is, Near U_ID Search (214).

The ZigBee-based Care Zone system and the police ZigBee terminal described above and illustrated in the drawings are merely one embodiment for carrying out the present invention, and should not be construed as limiting the technical spirit of the present invention. Therefore, embodiments without modification and modifications without departing from the gist of the present invention will be within the scope of the present invention as long as it will be apparent to those skilled in the art.

Figure 1 of the present invention shows a ZigBee-based Care Zone AMBER comprehensive management system configuration, Figure 2 shows a configuration for searching for a mobile ZigBee terminal with a police ZigBee terminal. 3 is a flowchart of a battery replacement time alarm algorithm of a mobile ZigBee terminal, and FIG. 4 is a flowchart of a fixed ZigBee base station data transmission algorithm.

<Explanation of symbols for the main parts of the drawings>

11: Mobile ZigBee Terminal

12: Fixed ZigBee Base Station

13: ZigBee Master

14: Amber integrated management system

S1: Police ZigBee Terminal

S2: Receivable area of police ZigBee terminal

111: Transmission information of the mobile ZigBee terminal: U_ID (mobile ZigBee terminal ID), Battery_State, Battery_Alarm

112: Battery check: Check the battery consumption

113: U_ID and Battery_Alarm are sent to the fixed ZigBee base station when the battery consumption is below the reference point (battery replacement time).

114: U_ID and Battery_State are sent to the fixed ZigBee base station when the battery consumption is above the reference point (battery replacement time).

211: Fixed ZigBee base station transmission information: U_ID (mobile ZigBee terminal ID), B_ID (fixed ZigBee base station ID)

212: Near U_ID receive: Receive U_ID (mobile ZigBee terminal ID)

213: Send U_ID (mobile ZigBee terminal ID) and B_ID (fixed ZigBee base station ID) to ZigBee master when U_ID is received

214: Near U_ID Search: Search around if U_ID (Mobile ZigBee terminal ID) is not received

Claims (7)

ZigBee-based Care Zone system device that tracks and manages the location of mobile ZigBee terminal with mobile ZigBee terminal, fixed ZigBee base station, ZigBee master and Amber integrated management system According to claim 1 ZigBee-based Care Zone system device with a mobile ZigBee terminal that continuously sends individual IDs and informs the fixed ZigBee base station when to replace batteries. According to claim 1 ZigBee based Care Zone system device with fixed ZigBee base station receiving fixed ID and RSSI (received signal strength indicator) of mobile ZigBee terminal by fixed installation at street and pole According to claim 1 ZigBee-based Care Zone system device with ZigBee master which receives base station ID and mobile ZigBee terminal's ID / RSSI wireless or wired from fixed ZigBee base station to acquire location information of mobile ZigBee terminal According to claim 1 ZigBee-based Care Zone system device with Amber integrated management system characterized by receiving information of ZigBee master by wireless and wired to inform location information of mobile ZigBee terminal to internet, mobile phone text service, police, etc. Police ZigBee terminal that detects the transmission signal of mobile ZigBee terminal in the reception area and acquires ID of mobile station ZigBee terminal and displays ID information on LCD According to claim 6 ZigBee terminal for police that can be fixed or attached to a vehicle or toll gate, and can be carried by hand to carry a wired or wireless communication to obtain ID information of a mobile ZigBee terminal.

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