KR101046150B1 - Ubiquitous sensor node device and system for switchgear - Google Patents

Abstract

The ubiquitous sensor node device for an open / close device according to the present invention is a ubiquitous sensor node device installed in an openable object, and is provided on a first surface of the object and blocks the antenna signal and the signal blocking module. A first node module including a transmission / reception module stacked on an upper surface; And a second node module installed on a second surface of the object corresponding to the first surface, the second node module including a signal blocking module for blocking an antenna signal, wherein the first surface and the second surface of the object The transmission and reception module may be activated when the first node module and the second node module are physically spaced apart from each other.

According to the present invention, the transmission and reception module for performing the wireless data transmission and reception operation is configured to be automatically activated as the switchgear is opened and closed, no additional device for checking or monitoring the switchgear is not required at all simpler In addition, the sensor node device can be efficiently and efficiently implemented, and an infrastructure for more efficiently implementing the operation of the ubiquitous network can be provided.

Description

Ubiquitous sensor node device and system for switchgear device {APPARATUS AND SYSTEM FOR UBIQUITOUS SENSOR NODE PROVIDED IN OPENING AND CLOSING DEVICE}

The present invention relates to a ubiquitous sensor node device and system for an open / close device, and more particularly, an RFID reader and a ubiquitous sensor function are integrated into one, and the ubiquitous sensor node device and the ubiquitous sensor node device are implemented. A ubiquitous sensor node system.

Among the methods of recognizing physically spaced objects by using a radio signal, a radio frequency identification (RFID) system identifies a thin planar tag attached to an object in a non-contact manner through a radio signal. Refers to a system that processes information.

 Such an RFID system consists of an antenna, a tag, and a reader. In this case, the reader uses radio frequency waves to transmit a signal for activating the tag. When the tag is activated, the tag transmits data to the reader through the antenna. That is, the tag stores information such as the contents of the article and the surrounding situation in the internal memory, and then reads and writes the information by an external read / write (R / W) terminal. As a means for checking, an ID tag (hereinafter, referred to as an RFID tag) using electromagnetic waves, which is a radio frequency (RF), has been used.

The RFID system attaches an RFID tag to an object and identifies ID information of the RFID tag in a non-contact manner using wireless communication between the RFID tag and the RFID reader.

That is, the RFID reader transmits an RF signal of a specific frequency band to the RFID tag and receives an RF signal reflected from the RFID tag. The RFID tag reflects a signal transmitted from the RFID reader and is reflected. Data including ID information is modulated and transmitted. As described above, in order to identify the ID information, the RFID reader performs identification by integrating the use of electromagnetic or electrostatic coupling within a radio frequency in the electromagnetic spectrum region.

On the other hand, the tag in the RFID system is expected to play a role as a ubiquitous sensor in the future. In other words, it is expected to function as a ubiquitous sensor that detects the dynamic information of the surroundings and actively delivers it to the network by adding the sensing and memory functions, instead of transmitting the initially inputted identification information only at the request of the RFID reader. .

In addition, the ubiquitous sensor network (USN: Ubiquitous Sensor Network) configured to add the network concept to the tag that performs the ubiquitous sensor function to collect the information detected by each sensor over the air in real time, the application of the ubiquitous sensor network (USN) It is expected to be.

In order to construct such a ubiquitous sensor network (USN), it is necessary to develop an RFID reader capable of reducing power consumption and implementing low cost. That is, the RFID reader suitable for the above USN should be low cost and small enough to be installed anywhere, and should be able to perform sensing functions. Accordingly, the development of a new type of RFID reader is required.

Conventionally, the sensor device used in such a sensor network is used in a form in which power is always supplied for real-time object recognition. However, although the actual object recognition is premised to be performed in real time, it is not always the case that the object is recognized through the actual sensor device, resulting in considerable power waste.

Although there are many examples of ubiquitous sensing networks, a sensor device that recognizes a person entering or leaving a specific place, for example, conventionally activates a sensor device in real time at an entrance and then enters a tag as described above. It takes information by reading it from the reader and passing it on to the network.

That is, the sensor device consumes power at all times, but since sensing processing such as reading information is performed only at the moment when a real person enters and exits, the sensor device wastes more power than necessary. In order to solve this problem, when the door is opened to reflect the fact that a person enters, it is monitored by using additional equipment, and sent to the sensing device again to the sensing device operating mode only when the door is opened as described above. There are also methods used to make changes.

In the above-mentioned case, the sensor for sensing information about the goods withdrawn from the space is activated only when a person opens a door that opens and closes a space (such as a refrigerator, a storage box, a display rack, etc.) in which the goods are stored. Similar to the example.

As described above, the sensor device, which is a basic infrastructure configuration of the conventional ubiquitous sensor network, generates considerable power waste or relies on a complicated configuration such as adding additional devices, thereby implying basic problems in terms of economy and ease of implementation.

An object of the present invention is to provide a ubiquitous sensor node device for an open / close device, in which the ubiquitous sensor node device installed in the open / close device is automatically turned on / off according to whether the open / close device is open or closed. .

Other objects and advantages of the present invention will be described below and will be appreciated by the embodiments of the present invention. In addition, the objects and advantages of the present invention can be realized by the configuration and combination of configurations shown in the claims.

In order to achieve the object as described above, the ubiquitous sensor node device for a switchgear device of the present invention is installed on the object that can be opened and closed is installed on the first surface of the object, the signal blocking module and the signal blocking module to block the antenna signal A first node module including a transmission / reception module stacked on an upper surface; And a second node module installed on a second surface of the object corresponding to the first surface, the second node module including a signal blocking module for blocking an antenna signal, wherein the first surface and the second surface of the object The transmission and reception module may be activated when the first node module and the second node module are physically spaced apart from each other.

Preferably, the signal blocking module may be made of a ferromagnetic material or a magnetic material, and the second node module may further include a transmission / reception module stacked on an upper surface of the signal blocking module.

In order to implement a more preferred embodiment, the first node module or the second node module may further include a signal active module made of a ferromagnetic material interposed between the transmission module and the signal blocking module. And a signal tagging module for tagging tag information existing within a predetermined distance from the first node module or the second node module, wherein the transmission / reception module transmits the tagged tag information to a server. .

According to another aspect of the present invention, a first node module and a first node module including a signal blocking module and a transmission / reception module stacked on an upper surface of the signal blocking module are installed on a first surface of an object that can be opened and closed. A second node module installed on a second surface of the object at a corresponding position and including a signal blocking module, wherein the first surface and the second surface of the object are physically spaced apart from each other; A sensor node device in which the transmission / reception module is activated when a two-node module is opened; And a server that sets up communication with the activated sensor node device when the sensor node device is activated.

In addition, the sensor node device of the present invention, tagging tag information located within a predetermined distance with respect to the sensor node device and transmits the tagged information and the unique code information of the sensor node device to a server, the server, Preferably, the tagging information of the sensor node device is classified and stored based on the unique code.

According to the present invention, since the transmission and reception module for performing the sensing operation and the wireless data transmission and reception operation is automatically changed to an active state according to the opening and closing of the switchgear, the activated sensor node device can efficiently establish a ubiquitous network without increasing complexity or wasting resources. Can manage

In addition, the signal blocking module made of a ferromagnetic material or a magnetic material, and a signal active module made of a ferromagnetic material between the transmission and reception module, there is an effect that can overcome the degradation of the antenna characteristics.

In addition, since the sensor node of the present invention is installed and operated in an existing switchgear that can be supplied with power, an existing device can be utilized as it is, and an RFID ubiquitous system that can effectively realize a low power environment can be implemented.

In addition, by applying the ubiquitous network in the RFID tag, sensor node, and server section, the sensing function of the USN and the mutual communication between the entities are possible, thereby resulting in low cost and high efficiency.

The ubiquitous sensor node device for a switchgear device of the present invention based on such an effect can provide an effect of improving secondary utilization efficiency, such as reducing management personnel, reducing recognition errors, and improving product management speed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

1 is a block diagram of a system provided with a ubiquitous sensor node device for the switching device according to the present invention. As shown in FIG. 1, the ubiquitous sensor node system for an open / close device includes a tag object including a ubiquitous sensor node 200 and 300 and an RFID tag 410 provided in an open / close object (hereinafter, referred to as an open / close device) 100 ( 400 and the server 500.

Here, the opening and closing device 100 to which the ubiquitous sensor nodes 200 and 300 are attached is a device including an opening such as a predetermined electric device (refrigerator, microwave oven, etc.) or a cabinet, or any type of opening and closing device including a door type device. Means. The opening and closing device 100 is composed of a first surface 101 and a second surface 102 that are physically spaced apart or coupled when opened or closed as needed, regardless of whether the door is opened or closed.

The ubiquitous sensor nodes 200 and 300 recognize the RFID tag 410 and transmit information of the recognized RFID tag to the server 500. The ubiquitous sensor nodes 200 and 300 have functions such as RFID tag sensing, data processing, and communication.

The ubiquitous sensor node device includes a first node module 200 and a second node module 300, and a plurality of ubiquitous sensor node devices are provided on the switching device 100. At this time, the first node module 200 is installed on the first surface 101 of the switchgear, the second node module 300 is installed on the second surface 102 of the switchgear, The first node module 200 and the second node module 300 are located in pairs corresponding to each other.

Here, whether or not the ubiquitous sensor node devices 200 and 300 are activated is related to whether the switching device 100 is opened or closed. That is, the ubiquitous sensor node devices 200 and 300 are automatically activated when the opening and closing device 100 is opened to emit radio waves, and when the opening and closing device 100 is closed, the ubiquitous sensor node devices 200 and 300 are automatically deactivated to be in a sleep mode. A detailed description thereof will be described later.

The tag object 400 includes an RFID tag 410. When the shielding device 100 is opened and the tag object 400 including the RFID tag 410 enters the electromagnetic field and is activated while the ubiquitous sensor node devices 200 and 300 emit radio waves, the shielding device 100 is activated in the RFID tag 410. Stored data is transmitted to the ubiquitous sensor node devices 200 and 300 through an antenna.

The ubiquitous sensor node devices 200 and 300 convert the transmitted data into RF signals and transmit them to the server 500. The server 500 analyzes and stores the information transmitted from the ubiquitous sensor node devices 200 and 300. Provide necessary services.

2 (a) and 2 (b) is an embodiment of the ubiquitous sensor node device for the switching device according to the present invention.

The first node module 200 installed on the first surface 101 of the switching device includes a signal blocking module 201 for blocking an antenna signal and a transmission / reception module 202 stacked on an upper surface of the signal blocking module 201. The second node module 300 installed on the second surface 102 of the opening and closing device includes a signal blocking module 301 for blocking an antenna signal.

At this time, the signal blocking module (201, 301) is preferably made of a ferromagnetic material or magnetic material.

Here, if the opening and closing device 100 is closed, as shown in Figure 2 (a), the signal blocking module 201 of the first node module 200 and the signal blocking module 301 of the second node module 300. The transceiver module 202 is placed in contact with each other.

As such, when the signal blocking modules 201 and 301 having magnetic properties close to the transmitting and receiving module 202 are adjacent to each other, electromagnetic waves emitted from the transmitting and receiving module 202 are blocked by a magnetic field formed between the signal blocking modules 201 and 301. Only very weak signals are emitted.

On the contrary, when the opening and closing device 100 is opened, the magnetic field formed between the signal blocking modules 201 and 301 is weakened so as not to affect the radio wave radiation of the transmission / reception module 202. Accordingly, the transmission and reception module 202 is automatically activated.

That is, while the transmission / reception module 202 performing the sensing operation and the wireless data transmission / reception operation is closed, the transmission / reception module 202 is located between the signal blocking modules 201 and 301 to maintain the sleep mode. While open, efficient power control is possible by allowing the signal blocking module 201 and 301 to be activated out of the space between them.

In addition, since the transmission and reception module is automatically turned on and off as necessary to activate the ubiquitous sensor node device (200,300), the ubiquitous sensor node system without the hassle, such as the addition of a detection unit that can determine whether the switchgear opening and closing Can be implemented.

In addition, since the ubiquitous sensor node device of the present invention is installed and operated in the switchgear that can be supplied with the existing power, such as electronic products or electronic doors, various solutions of RFID ubiquitous technology can be applied to existing devices, the ubiquitous Sensor node devices can be used to implement RFID ubiquitous systems without power limitations.

3 is another embodiment of the ubiquitous sensor node device for the switching device according to the present invention.

As shown in FIG. 3, the ubiquitous sensor node device for the switching device according to the present invention may further include a transmission / reception module 302 stacked on an upper surface of the signal blocking module 301 of the second node module 300. .

When the transmitting and receiving modules 202 and 302 are located on both sides of the switchgear as described above, the stability of the information can be improved by the redundancy of the tagging information.

That is, when specific RFID tag information is recognized by the first node module 200 and the second node module 300, the tag information recognized by the transmission / reception module of each node module is simultaneously transmitted to the server 500. At this time, the server 500 can obtain more reliable data by comparing a tag ID and selecting a signal having a high power among the received data in the same case.

In addition, the first node module 200 or the second node module 300 is a signal active module consisting of a ferromagnetic material (Ferromagnetic) interposed between the transmission and reception module (202, 302) and the signal blocking module (201, 301) ( 203,303) may be further included.

When the ferromagnetic material is installed between the signal blocking modules 201 and 301 made of ferromagnetic material or magnetic material and the transmitting and receiving modules 202 and 302 radiating radio frequency, the transmitting and receiving modules 202 and 302 are ferromagnetic. Electromagnetically separated from the surface of 201,301.

In this case, it is possible to prevent characteristics such as interference of radio waves and degradation of RFID tag recognition rate, which may occur when the antenna is in contact with or in proximity to a ferromagnetic material or magnetic material. The reliability of the device can be improved.

The signal active modules 203 and 303 may be manufactured in the form of a sheet or a pad formed of a ferromagnetic material, or may be formed by applying a powder formed of the ferromagnetic material. At this time, it is preferable that the signal active modules 203 and 303 have a minimum thickness in accordance with the specification of the object to be installed.

4 is a block diagram of a ubiquitous sensor node system for a switchgear according to the present invention.

The ubiquitous sensor node device further includes signal tagging modules 204 and 304 for tagging tag information existing within a predetermined distance. In this case, the signal tagging module may be provided in the first node module 200 or the second node module 300. As illustrated in FIG. 4, the signal tagging modules 204 and 304 recognize the RFID tag 410 information and transmit the tagged tag information to the server 500.

Herein, the operation of the ubiquitous system having the ubiquitous sensor node device will be described.

First, when a user opens or closes the opening and closing device 100 to insert or remove a product to which an RFID tag 410 is attached, or a user carrying the RFID tag 410 passes through the opening and closing device 100. 100 is opened.

When the opening and closing device 100 is opened as described above, the transmission and reception modules 202 and 302 whose signals are blocked by the signal blocking module 301 of the first node module 200 and the second node module 300 are opened and closed. It is instantaneously activated by the physical separation between the first surface 101 and the second surface 102 of the (100) and transmits a radio signal through the antenna.

At this time, if there is a signal received from the RFID tag 410 while the radio wave is emitted from the antenna as described above, the sensor node device 200, 300 collects the RFID tag 410 information from the signal tagging module (204, 304) By transmitting the collected RFID tag information to the server 500 through the transmission and reception module (202, 302) of the sensor node device (200,300).

That is, the sensor node devices 200 and 300 tag tag information located within a predetermined distance with respect to the sensor node device and transmit the tagged information and unique code information of the sensor node device to the server 500.

On the other hand, the server 500 determines whether the sensor node in the active state in consideration of the power of the transmitted signal.

That is, as a result of the determination of the signal radiated from the sensor node device, if the power of the transmitted signal is greater than or equal to the reference power, the server 500 determines that the sensor node device is in an activated state. Here, the reference power represents the lowest power level for the normal operation of the sensor node device.

In addition, if the power of the signal transmitted from the sensor node device is less than the reference power, the server recognizes the sensor node device as an inactive node, ignores the transmitted signal, and waits for a signal from the next transmitted sensor node device. . In this way, the server can easily detect the active sensor node device.

Subsequently, when it is determined that the sensor node device is in the activated state as described above, the server 500 sets up communication with the activated sensor node device using the tagging information table shown in FIG. 5.

At this time, the server 500 retrieves unique code, priority information, and respective detected tag information of another sensor node device and acquires tag data from an RFID tag corresponding to tag information grasped from the received data. Check it. Thereafter, if there is no overlap, the sensor node device identified from the received data is added to the active node and information about the sensor node device is stored in the tagging information table.

At this time, the server classifies and stores the time-based tagging information of the sensor node device based on the unique code transmitted from the sensor node device. The collision of information can be prevented by updating the tagging information table when transmitting and receiving the tag information thus obtained, and the flexibility in terms of data processing is improved. In addition, relatively few resources are required because the network is connected between the sensor node device and the server only when necessary.

Thereafter, when the switching device 100 is closed, the wireless signal transmission of the corresponding sensor node device is stopped, and the sensor node system enters a sleep mode to minimize power consumption.

At this time, when the signal received from the sensor node is not detected even after a predetermined time elapses, the server 500 determines that the corresponding sensor node device has entered a sleep mode and ends the network with the sensor node device. However, the above-described method may be applied to terminate the network between the sensor node device and the server 500, or may be terminated by transmitting a communication start signal or a transmission stop signal from the sensor node device.

As described above, the ubiquitous sensor node device and the system for the switching device according to the present invention have been described in detail, but each configuration of the device and the system according to the present invention is understood as logically divided components rather than physically divided components. Should be. That is, since each configuration corresponds to logically divided components to realize the technical idea of the present invention, even if each component is integrated or separated, the present invention can realize the function performed by the logical configuration of the present invention. Should be interpreted to be within the scope of.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is described below by the person skilled in the art and the technical spirit of the present invention. Various modifications and variations are possible without departing from the scope of the appended claims.

The following drawings, which are attached to this specification, illustrate exemplary embodiments of the present invention, and together with the detailed description of the present invention serve to further understand the technical spirit of the present invention, the present invention includes matters described in such drawings. It should not be construed as limited to.

1 is a block diagram of a system provided with a ubiquitous sensor node device for the switching device according to the present invention,

Figure 2 is an embodiment of the ubiquitous sensor node device for the switching device according to the present invention,

3 is another embodiment of the ubiquitous sensor node device for the switching device according to the present invention,

4 is a block diagram of a ubiquitous sensor node system for a switchgear according to the present invention;

5 is a tagging information table of a ubiquitous sensor node system for a switchgear according to the present invention.

Claims (10)

In the ubiquitous sensor node device installed in the object that can be opened and closed, A first node module installed on a first surface of the object and including a signal blocking module for blocking an antenna signal and a transmission / reception module stacked on an upper surface of the signal blocking module; And A second node module installed on a second surface of the object corresponding to the first surface, the second node module including a signal blocking module blocking an antenna signal, The first and second surfaces of the object are physically spaced apart, the first node module and the second node module when the transmission module is activated, the ubiquitous sensor node device, characterized in that the activation. The method of claim 1, wherein the signal blocking module, Ubiquitous sensor node device for switchgear, characterized in that the ferromagnetic material or magnetic material. The method of claim 1, wherein the second node module, Ubiquitous sensor node device for the switching device further comprises a transmission and reception module stacked on the signal blocking module. The method of claim 3, wherein the first node module or the second node module, The ubiquitous sensor node device for a switchgear device further comprising a signal active module made of a ferromagnetic material interposed between the transmission module and the signal blocking module. The method of claim 3, wherein the first node module or the second node module, And a signal tagging module for tagging tag information existing within a predetermined distance from the first node module or the second node module. The transceiver module ubiquitous sensor node device, characterized in that for transmitting the tagged tag information to the server. A first node module including a signal blocking module and a transmission / reception module stacked on an upper surface of the signal blocking module and a second surface of the object corresponding to the first surface; And a second node module including a signal blocking module, wherein the first node module and the second node module are physically spaced apart from each other so that the first node module and the second node module are opened. A sensor node device that is activated; And And a server for setting up communication with the activated sensor node device when the sensor node device is activated. The method of claim 6, wherein the signal blocking module of the sensor node device, Ubiquitous sensor node system for switchgear, characterized in that consisting of ferromagnetic or magnetic material. The method of claim 6, wherein the second node module, Ubiquitous sensor node system for the switching device further comprises a transmission and reception module stacked on the signal blocking module. The method of claim 8, wherein the first node module or the second node module, The ubiquitous sensor node system for a switching device further comprising a signal active module made of a ferromagnetic material interposed between the transmission and reception module and the signal blocking module. The method of claim 6, wherein the sensor node device, Tagging tag information located within a predetermined distance with respect to the sensor node device and transmitting the tagged information and unique code information of the sensor node device to a server, The server, Ubiquitous sensor node system for the switching device, characterized in that for classifying and storing the time-based tagging information of the sensor node device based on the unique code.

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