KR100884557B1 - Ubiquitous sensor network system for remotely managing software of node, and its method - Google Patents

Abstract

The present invention relates to a ubiquitous sensor network system and a method for remotely managing software of a node, wherein the ubiquitous sensor network (USN) remotely provides nodes with new software ROM files and additionally powers the nodes. The present invention provides a ubiquitous sensor network system and a method for remotely managing software of a node to eliminate the hassle of directly downloading the software by directly collecting the nodes.

To this end, the present invention provides a method for downloading a software ROM (Read Only Memory) file of a node in a ubiquitous sensor network system. A method comprising: setting a flag for downloading in its flash memory and resetting itself as each node receives a reset command for downloading; Each node downloading a ROM file of software from a management node; And each node sets a flag in its flash memory to operate in a normal state and resets itself.

USN system, RF download, managed node, management server, ROM file

Description

Ubiquitous sensor network system for remotely managing software of node, and its method

The present invention relates to a ubiquitous sensor network system and method for remotely managing software of a node. More particularly, the present invention provides remotely providing ROM files of new software to nodes in a ubiquitous sensor network (USN). And additionally managing the power of the nodes by group, thereby eliminating the hassle of directly collecting the nodes and directly downloading the software, and a ubiquitous sensor network system and method for remotely managing the software of the node. .

The present invention is derived from the research conducted as part of the IT new growth engine core technology development project of the Ministry of Information and Communication [Task management number: 2005-S-038-02, Task name: UHF RF-ID and Ubiquitous networking technology development].

Ubiquitous sensor network (USN) technology randomly deploys hundreds to tens of thousands of sensor nodes, allowing sensor nodes to collect current state information around them, and information sensed by sensor nodes (sensing information). It refers to a technology for transmitting to a higher application server through a relay node, such as a router (Router) and a sink node (Sink Node).

That is, the ubiquitous sensor network (USN) technology collects current state information to maintain a pleasant environment and state information on the surrounding ecological environment, atmospheric environment, and geographical environment.

In this conventional technique, a small number of nodes are placed on a practical level rather than a substantial number of nodes, and the cost of random placement of new nodes is still lower than the cost or effort of collecting them. Research into the deployment environment, collection of nodes, and software downloading of nodes have not begun in earnest.

And nodes such as sensors or routers applied to ubiquitous sensor network (USN) technology are not only difficult to access the deployment environment, but it is also almost impossible to collect tens of thousands of nodes to modify the software of the nodes.

Therefore, in the ubiquitous sensor network (USN) technology, the nodes in the location where it is not easy to collect are collected and the node program modified by the development PC on the collected nodes is serial port or parallel port. There is an urgent need for ubiquitous sensor network (USN) technology, which can replace the download method via.

Accordingly, the present invention has been proposed to solve the above problems and to meet the above requirements. In the ubiquitous sensor network (USN), the node remotely provides new software ROM files and additionally groups the power of the nodes. The purpose of the present invention is to provide a ubiquitous sensor network system and a method for remotely managing software of a node to eliminate the hassle of directly downloading the software by directly collecting the nodes.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention which are not mentioned above can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The method of the present invention for achieving the above object is a method of downloading a software ROM (Read Only Memory) file of a node in a ubiquitous sensor network system. A method comprising: setting a flag for downloading in its flash memory and resetting itself as each node receives a reset command for downloading; Each node downloading a ROM file of software from a management node; And each node sets a flag in its flash memory to operate in a normal state and resets itself.

On the other hand, the system of the present invention for achieving the above object, in the ubiquitous sensor network system, consisting of a plurality of nodes senses its own target area to transmit data, and remotely download the ROM (Read Only Memory) file of the software Node group for receiving; A gateway for relaying data from the node group; Network management for managing data transmitted through the gateway, transmitting the data transmitted through the gateway to an application service server, determining whether to download the software to the node group, and transmitting the node information to the management server. System server; An application service server for providing an application service according to a request from an application program by utilizing data transmitted from the network management system server; The management server for storing and managing a ROM file of software and transmitting the software ROM file to a management node managing the node according to node information from the network management system server; And the management node for transmitting a software ROM file from the management server to the node.

Further, in the system of the present invention, the management node further performs a function of commanding power control of the end node and the router of the node group, the node group according to the power control command from the management node. It further comprises a power control means for controlling the power of the node and the router.

The present invention as described above, by remotely changing or modifying the software of the nodes, it is easier to maintain and manage the nodes, and can provide convenience for the node administrator does not directly collect tens of thousands of nodes. It has an effect.

In addition, the present invention has the effect of managing the power more efficiently by managing the power of the nodes by group.

The above objects, features, and advantages will become more apparent from the detailed description given hereinafter with reference to the accompanying drawings, and accordingly, those skilled in the art to which the present invention pertains may share the technical idea of the present invention. It will be easy to implement. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an embodiment of a ubiquitous sensor network (USN) system for remotely managing software of a node according to the present invention.

As shown in FIG. 1, a ubiquitous sensor network (USN) system for remotely managing software of a node according to the present invention includes an end node 10, a router 20, and an actuator. Actuator 30, Sink Node 40, Gateway 50, Network Management System (NMS) server 60, Application service server 70, A control server 80, and a control node 90.

At this time, the power of the end node 10 and the router 20 is managed for each group (node group), the actuator 30 of each group according to the command of the management node 90, the power of the nodes in the group to which it belongs; To control.

Here, the sink node 40 may be included in a group (node group) consisting of the end node 10, the router 20, and the actuator 30.

In addition, the gateway 50, the network management system server 60, the application service server 70, the management server 80, and the management node 90 are connected to each other through an Ethernet or the like.

Meanwhile, the management node 90 communicates with the end node 10, the router 20, the actuator 30, and the sink node 40 through a radio frequency (RF) signal.

Hereinafter, the function of each component of the ubiquitous sensor network (USN) system will be described in more detail.

The end node 10 obtains (senses) information of the target area through the attached sensor and transmits the information to the router 20 or the sink node 40. In addition, the end node 10 resets itself according to the reset command received through the sink node 40. In addition, the end node 10 downloads the ROM file according to a command to download the ROM file of the new software received from the management node 90.

The router 20 searches for the optimal route of the sensing data received from the end node 10 and transmits the sensing data to the sink node 40 through the found optimal route. In addition, the router 20 resets itself according to the reset command received through the sink node 40. In addition, when the router 20 receives a command from the management node 90 to download a ROM file of new software, the router 20 downloads the ROM file from the management node 90.

The actuator 30 receives a power control command from the management node 90 and controls power of each end node 10 and the router 20 according to the received power control command.

The sink node 40 transmits the sensing data received from the end node 10 or the router 20 to the network management system server 60 through the gateway 50, and receives the received data from the network management system server 60. The reset command of the end node 10 or the router 20 is transmitted to the corresponding end node 10 or the router 20. In addition, when the sink node 40 receives a command from the management node 90 to download a ROM file of new software, the sink node 40 may download the corresponding ROM file from the management node 90.

The gateway 50 relays the sink node 40 and the network management system server 60 located in the broadband convergence network (BcN).

The network management system server 60 may provide information on all nodes (end node 10, router 20, actuator 30, sink node 40, etc.) set at the initial setting of the ubiquitous sensor network USN. Manage the ubiquitous sensor network (USN) network based on (location information, type information, etc. of all nodes), and manage the sensing data received from the sink node 40 through the gateway 50, the application service server ( 70).

In addition, the network management system server 60 manages the necessity of downloading a ROM file of new software to a specific node (end node 10, router 20, actuator 30, sink node 40, etc.). The server 80 transmits the information of the node, and commands the reset of the node through the sink node 40.

The application service server 70 recognizes a situation for the application service through the sensing data received from the network management system server 60 and provides the application service when the application service is requested from the application.

In addition, the management server 80 stores and manages a ROM file of software for each version according to an operation policy, and receives a node information from a network management system server 60 and manages the corresponding nodes. 90) to the ROM file of the stored software.

At this time, the management server 80 updates the ROM file from the development PC whenever the ROM file of the software is updated.

Here, the operation policy is set at the initial construction of the management server 80, the format for storing the ROM file for each version and the manner of management, the node type (end node 10, router 20, actuator 30) To classify the ROM files provided by the sink nodes 40 and the like (even though the nodes are in the areas of different management nodes 90, if the node types are the same, the same ROM files must be provided. File), and a method of updating a new version of a software ROM file when a software of a specific node or a specific node is modified.

In addition, the management server 80 can download the software ROM file to the same type of nodes (same kind of nodes) in different management node areas at the same time so that the same node type (type) for each management node area can be downloaded. Select a unit) so that the ROM file can be downloaded through each managed node.

And the management node 90 is arranged in a group consisting of the end node 10, the router 20, and the actuator 30 and additionally the sink node 40, one end belonging to a group managed by itself Manage node 10, router 20, and actuator 30 (or sink node 40 also).

Here, the management node 90 controls the power of the end node 10 and the router 20 belonging to the group managed by the user through the actuator 30 belonging to the group managed by the management node 90.

In this case, when the sink node 40 is included in a group (node group) consisting of the end node 10, the router 20, and the actuator 30, the sink node 40 may be managed by the management node 90 managing the group. have.

In addition, when the management node 90 receives the ROM file of the new software from the management server 80, the nodes of the group (end node 10, router 20, actuator 30) that manages it , Sink node 40, etc.).

Here, the management node 90 makes it possible to temporarily download the software ROM file to nodes of the same type (nodes of the same type) in different management node areas using specific commands.

At this time, when a large number of nodes simultaneously download a ROM file or run software at the same time, a large number of association request commands are sent to the management node 90. The management node 90 transmits a large amount of association request commands to the management node 90. In order to prevent the loss of data that may occur due to the collision of the Association Request instructions of the nodes, the program start time of the nodes may be adjusted.

2 is a flowchart illustrating a method for downloading a ROM file of a node in a ubiquitous sensor network (USN) system according to the present invention.

First, nodes in the ubiquitous sensor network (USN) system (end node 10, router 20, actuator 30, sink node 40, etc.) operate in a normal state (application program) (201), When receiving a reset command from the network management system server 60 (202), it is determined whether the received reset command is a reset for downloading (203).

As a result of the determination (203), if the reset command is for downloading, nodes in the ubiquitous sensor network (USN) system set a flag for downloading to E2PROM, which is their flash memory. It resets itself (204).

Subsequently, nodes in the ubiquitous sensor network (USN) system read a flag set in E2PROM, which is their flash memory, and wait for a downloading operation state (205).

The nodes in the ubiquitous sensor network (USN) system check whether the ROM file of the new software is transmitted from the management node 90 (206), and when the ROM file of the new software is transmitted from the management node 90, the ROM of the received software is transmitted. Download the file (207).

Subsequently, nodes in the ubiquitous sensor network (USN) system set a flag in their flash memory (E2PROM) to operate in a normal state, reset themselves (208), and return to a normal state. It operates again (201).

On the other hand, if the result of the determination 203 is that the received reset is not for downloading (if the received reset is for an application program), the nodes in the ubiquitous sensor network (USN) system are reset to lower nodes. reset) command, and resumes operation to the normal state (201).

On the other hand, if the check result 206, the ROM file of the new software is not transmitted from the management node 90 for a predetermined time, the nodes in the ubiquitous sensor network (USN) system to the E2PROM, which is its own flash memory (Flash Memory) A flag for operating in the normal state is set to reset itself (208), and operation starts again in the normal state (201).

3 is a flowchart illustrating a software management method in a ubiquitous sensor network (USN) system according to the present invention.

First, when the software of at least one node (end node 10, router 20, actuator 30, sink node 40, etc.) in a ubiquitous sensor network (USN) system needs to be modified (301), the network The management system server 60 transmits the information of the node to be modified (i.e., the node to download the ROM file of the new software (the node to be downloaded)) to the management server 80 at the same time (302), the gateway ( A reset command for downloading is issued to the sink node 40 through 50.

In this case, an error or bug occurs in a program of at least one node, or the software of a development PC needs to be improved (or modified) to update the entire ubiquitous sensor network (USN) system. In this case, the software of the node should be modified.

At this time, the sink node 40 transmits a downloading reset command to the downloading target node, and the node that receives the downloading reset command from the sink node 40 has its own flash memory. It sets a flag for downloading in E2PROM which is a memory and resets itself.

Here, the reason why the network management system server 60 issues a download reset command to the download target node through the sink node 40 is because the state of the download target node is in a normal operation state. This is for switching to the downloading operation state.

Thereafter, the management server 80 checks whether the download target node is within the transmission coverage of which management node 90 based on the information of the node received through the network management system server 60 (304), and Ethernet (Ethernet). In step 305, a new ROM file is transmitted to the corresponding management node 90 through.

Subsequently, the management node 90 transmits the ROM file of the new software to the downloading target node in a simple RF scheme (306), so that the downloading target node downloads the corresponding ROM file.

At this time, a flag for downloading is set in the flash memory and the E2PROM of the download target node.

The node which downloads the ROM file of the new software from the management node 90 resets again by setting a flag for driving the application program in its E2PROM which is its own Flash memory (307). ).

Here, the node that downloaded the ROM file of the new software from the management node 90 requests to connect to the router 20 or the sink node 40 nearby to run an application program for the ubiquitous sensor network (USN) service. By performing the Association Request procedure, the operation of the sensor network according to the IEEE 802.11 standard is started.

On the other hand, the method of the present invention as described above can be written in a computer program. And the code and code segments constituting the program can be easily inferred by a computer programmer in the art. In addition, the written program is stored in a computer-readable recording medium (information storage medium), and read and executed by a computer to implement the method of the present invention. The recording medium may include any type of computer readable recording medium.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention can be used in ubiquitous sensor network systems, home network systems, and the like.

1 is a configuration diagram of an embodiment of a ubiquitous sensor network (USN) system for remotely managing software of a node according to the present invention;

2 is a flowchart illustrating a method for downloading a ROM file of a node in a ubiquitous sensor network (USN) system according to the present invention;

3 is a flowchart illustrating a software management method in a ubiquitous sensor network (USN) system according to the present invention.

* Explanation of symbols on the main parts of the drawing

10: end node 20: router

30: actuator 40: sink node

50: gateway 60: network management system server

70: application service server 80: management server

90: managed node

Claims (10)

How to download a software ROM (Read Only Memory) file from a node in a ubiquitous sensor network system In Resetting itself and setting a flag for downloading in its flash memory as each node receives a reset command for downloading; Each node downloading a ROM file of software from a management node; Each node setting a flag in its flash memory to operate in a normal state and resetting itself; And Controlling each node's own power according to a power control command received through a management node managing the node; Software ROM file download method of a node comprising a. delete The method of claim 1, The ROM file of the software is If an error occurs in a program of any one of the nodes, the software ROM file downloading method of the node, characterized in that the download to the node where the error occurs. The method of claim 1, The ROM file of the software is If the software of the development PC (Modification PC) is modified to update the entire ubiquitous sensor network system, it is downloaded to each node, characterized in that the software ROM file download method of the node. In the ubiquitous sensor network system, A node group configured to include a plurality of nodes, transmit a data by sensing its target area, and remotely download a ROM (Read Only Memory) file of software; A gateway for relaying data from the node group; Network management for managing data transmitted through the gateway, transmitting the data transmitted through the gateway to an application service server, determining whether to download the software to the node group, and transmitting the node information to the management server. System server; An application service server for providing an application service according to a request from an application program by utilizing data transmitted from the network management system server; The management server for storing and managing a ROM file of software and transmitting the software ROM file to a management node managing the node according to node information from the network management system server; And The management node for transmitting a software ROM file from the management server to a corresponding node and instructing power control of an end node and a router of the node group; Including but not limited to: The node group is, And power control means for controlling power of the end node and the router according to a power control command from the management node. Ubiquitous Sensor Network System. delete The method of claim 5, wherein The network management system server, And a software download to the node in which the error occurs, when an error occurs in a program of one node in the node group. The method of claim 5, wherein The network management system server, If the software of the development PC (modification PC) is to be modified to update the entire ubiquitous sensor network system, the ubiquitous sensor network system characterized in that for determining the software download to each node of the node group. The method of claim 5, wherein The management server, The ubiquitous sensor network system of claim 1, wherein the ROM file of the software is classified for each node type of the node group, and the ROM file is stored and managed for each version of the software. The method of claim 9, The management server, Ubiquitous characterized in that each node of the same type (node of the same type) in the area of different node groups can download the software ROM file at a time by selecting the same node type for each management node area. Sensor network system.

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