KR100967460B1 - Tag transmitter and product positioning and inventory management system - Google Patents

Abstract

The present invention relates to a location identification and inventory management technology, and more particularly, a tag transmitter capable of providing the location information of each tag identified through GPS in real time by physically converging GPS and wireless network technology into one tag. And a product positioning and inventory management system using the same.

The product positioning and inventory management system according to the present invention has a plurality of tags each having identification information, receiving a GPS signal to calculate a current position, and wirelessly transmitting a location signal including the calculated location information and identification information. A transmitter; A wireless communication network including a plurality of access points for receiving position signals output from the tag transmitter; It includes a management server to determine the position of each tag transmitter through the position signal of each tag transmitter output from the access point, and to display the determined position on the status plate corresponding to the product storage field.

GPS, DGPS, WLAN Mesh, Tag, Tag Transmitter, Positioning, Inventory Management, Warehouse, Yard, Car, Container

Description

Tag trasmitter, goods position search and stock management system

The present invention relates to a positioning and inventory confirmation technology, and more particularly, a tag transmitter capable of providing the location information of each tag identified through GPS in real time by physically converging GPS and wireless network technology into one tag. And a product positioning and inventory management system using the same.

Recently, the GPS (Global Positioning System) has been mainly used as a technology for accurately confirming the current position. GPS is a system that knows exactly where you are using satellites anywhere in the world, not just airplanes, ships and cars. This GPS is a GPS receiver that can measure the exact time and distance from three or more satellites and calculate the current position according to the triangulation method of three different distances. Currently, the method of obtaining distance and time information from three satellites and correcting the error with one satellite is widely used.

Positional accuracy differs between military and civilian use. For civilian use, the horizontal and vertical error is about 10-15m and the speed measurement accuracy is 3cm per second. In addition, the satellite is equipped with three atomic clocks to provide time information with an error of only one second in 36,000 years.

GPS is currently applied in a wide range of fields, from providing simple location information to automatic navigation and traffic control of aircraft, ships and automobiles, to preventing collisions of oil tankers, precise surveying of large-scale civil engineering works, mapping, and logistics management. It has been developed and used in various ways from to satellite mounting.

On the other hand, the product storage field, i.e. the yard, where many vehicles or containers are waiting to be shipped, ranges from a few hundred meters to several kilometers in width and length, again divided into dozens of blocks. Each block holds a number of vehicles or containers. In particular, in the vehicle field of 1 km in width and length, about 20,000 vehicles are stored.

Most of the products stored in these product storage fields are moved to different regions, and in order to find these products easily, they are stored in a designated location separately from each product type / movement region. Currently, in most product storage fields, the location and inventory management of products are managed by the documents that are taken in and out of the product.

However, as described above, it is quite difficult for an administrator to determine the exact location of a product that is desired by the manager in a wide range of product storage fields. When a product is stored in another location due to a manager's mistake or a missing document, Due to waste of time, there are disadvantages in that labor cost rises and work efficiency falls.

The present invention was devised to solve such a problem, and its purpose is to produce a tag function for GPS and a product identification for a product's location into one small tag, so that the manager wants a product within a wide product storage field. The present invention provides a tag transmitter and a position determination device using the tag transmitter to accurately determine the position of the electronic device and to enable electronic inventory management.

Furthermore, the tag transmitter according to the present invention includes a tag transmitter capable of using the tag transmitter for a few weeks and several months by embedding a power source and waking up every predetermined period to drive the tag transmitter. To provide.

Furthermore, the present invention provides a tag transmitter and a position determination device using the same, by adding a solar cell to the tag transmitter according to the present invention so as to supplement power consumed through the power source.

Furthermore, by correcting the error of the position information calculated through the GPS signal transmitted from the GPS satellites and compensating the position information transmitted from each tag transmitter, the tag transmitter and the position determination using the same can determine the position of the product more accurately. To provide a device.

Furthermore, by connecting through a broadband network such as WLAN Mesh between the tag transmitter and the system responsible for the location and inventory management of the product, it is possible to connect through separate wired and short-distance network, so that multiple tag transmitters can be installed without building a separate network. The present invention provides a tag transmitter and a position determination device using the tag transmitter capable of positioning and inventory management of a provided product.

Furthermore, in communication between access points of a WLAN mesh network provided at a predetermined place in a product storage field, by relaying and sharing data through one or more channels, the system is provided to a system for product location and inventory management. The present invention provides a tag transmitter and a position determination device using the tag transmitter capable of securing stability due to communication distance and data loss.

Tag transmitter according to an aspect of the present invention described above is a GPS receiver for receiving and outputting a GPS signal from a GPS satellite, each having identification information, a memory for storing the current location information, and the location information stored in the memory Sending and receiving to the access point connected to the wireless network, receiving and receiving the control command output from the access point, and calculates the current position information through the GPS signal output from the GPS receiver to store in the memory, the identification information and location information It comprises a control unit for transmitting a location signal to the access point through the transmission and reception unit.

In addition, the product positioning and inventory management system according to an aspect of the present invention each has identification information, receives a GPS signal to calculate the current position, and wirelessly outputs a position signal including the calculated position information and identification information The position of each tag transmitter is determined by a wireless communication network including a plurality of tag transmitters to be sent, a plurality of access points receiving position signals output from the tag transmitters, and position signals of the tag transmitters output from the access points. The management server may include a management server that displays the determined location on a status plate corresponding to the product storage field.

Therefore, the product positioning and inventory management system according to the present invention is a tag transmitter provided in a product such as a vehicle or a container is a current position from a GPS signal received through a GPS receiver according to a wake-up signal transmitted from a predetermined period or an access point. Calculate The calculated current position information of the tag transmitter is transmitted to the management server through a wireless communication network such as, for example, a WLAN mesh network. The management server receives the position information of each tag transmitter and transmits the position information to the status board corresponding to the product storage field. By marking the location of each tag transmitter and providing the manager with the status board displayed, the manager can accurately locate the desired product within the vast product storage field, enabling electronic inventory management.

According to another aspect of the present invention, the position determination system according to the present invention further comprises a position correction system for correcting the error of the position information calculated through the GPS signal transmitted from the GPS satellite to provide to the management server, Allows you to determine the position of the tag transmitter.

In accordance with another aspect of the present invention, the tag transmitter according to the present invention further includes a solar cell that collects and converts sunlight into a power source for supplying the available time, and further supplies the tag transmitter to the tag transmitter, thereby enabling a longer operation. Let's do it.

According to another aspect of the present invention, each access point of the position determination system according to the present invention relays and shares data through a predetermined one or more channels to the management server, thereby enabling more accurate transmission and reception of data.

The tag transmitter according to the present invention and a product location confirmation and inventory management system using the same are provided with a product having a small tag and a tag function for identification of a product and a GPS for product location, and a wide product storage field. The manager can check the exact position of the desired product in the electronic inventory management has the advantage.

In addition, the tag transmitter according to the present invention has an advantage that the tag transmitter can be used for as long as several weeks or months by incorporating a power source and waking up every predetermined period to drive the tag transmitter.

In addition, by adding an external power source or a solar cell to the tag transmitter to supplement the power consumed through the power source, the tag transmitter has an advantage of increasing the available time.

In addition, the tag transmitter according to the present invention and the product position confirmation and inventory management system using the same by correcting the error of the position information calculated through the GPS signal transmitted from the GPS satellite to compensate for the position information transmitted from each tag transmitter, Has the advantage of determining the position of the more accurate product.

In addition, the tag transmitter according to the present invention and the product positioning and inventory management system using the same are connected through a WLAN mesh network between the tag transmitter and the system responsible for positioning and inventory management of the product, so that a plurality of tags can be installed without a separate network. It has the advantage of positioning and inventory management of products equipped with tag transmitter.

In addition, the tag transmitter and the product location checking and inventory management system using the tag transmitter in the communication between the access point of the WLAN mesh network provided in a predetermined place of the product storage field, relays and shares each data through one or more channels By providing a system that is in charge of location and inventory management, it has the advantage of ensuring stability due to communication distance and data loss.

The foregoing and further aspects of the present invention will become more apparent through the preferred embodiments described with reference to the accompanying drawings. Hereinafter, the present invention will be described in detail to enable those skilled in the art to easily understand and reproduce the present invention.

1 is a schematic diagram schematically showing a product positioning and inventory management system according to an embodiment of the present invention. As shown, the product positioning and inventory management system according to the present invention each has identification information, receives a GPS signal to calculate the current position, and wirelessly transmits the position signal including the calculated position information and identification information. A wireless communication network 300 including a plurality of tag transmitters 200 to transmit, a plurality of access points 310 to receive position signals output from the tag transmitter 200, and each output from the access point 310. It includes a management server 400 to determine the position of each tag transmitter 200 through the position signal of the tag transmitter 200, and to display the determined position on the status plate 420 corresponding to the product storage field. do.

The tag transmitter 200 is attached to or inserted into a product stored in a product storage field such as a vehicle or a container. In particular, the tag transmitter 200 may be implemented as an additional functional tag such as an odor remover or an air freshener provided in the vehicle. The tag transmitter 200 receives a GPS signal transmitted from the GPS satellite 100 to calculate a current position, that is, a product position, and provides the calculated position information to the management server 400 through the wireless communication network 300. . This tag transmitter 200 will be described in more detail with reference to FIG. 2.

2 is a block diagram schematically illustrating a tag transmitter according to an exemplary embodiment of the present invention. As shown, the tag transmitter 200 according to the present invention is a GPS receiver 210 for receiving and outputting a GPS signal from the GPS satellite 100 and each of the memory having identification information, the current location information is stored 220, a transmitter / receiver 230 for transmitting location information stored in the memory 220 to an access point of a wireless network, and receiving a control command output from the access point, and a GPS output from the GPS receiver 210. Comprising the current position information through the signal stored in the memory 220, and comprises a control unit 240 for transmitting a position signal including the identification information and the position information to the access point through the transceiver 230.

The GPS receiver 210 may be formed of, for example, a small GPS receiver 210, and receives each GPS signal from three or more GPS satellites 100 and outputs the respective GPS signals to the controller 240.

The memory 220 may be, for example, an EEPROM or a small flash memory capable of reading and writing, storing identification information of the tag transmitter 200, and further including a tag transmitter calculated by the controller 240 through a GPS signal. Position information 200, that is, product position information is stored. The data stored in this way is controlled by the control unit 240. Here, the identification information of the tag transmitter 200 is the unique information such as the vehicle's chassis number or the unique information of the container at the time of shipment of the vehicle or the container, and the unique information is provided in the tag transmitter 200 provided in the product at the time of shipment of the product. Stored in memory.

The transceiver 230 may be implemented as, for example, an antenna for transmitting and receiving data to and from the wireless communication network 300 through wireless communication using a frequency of 2.4 GHz band, and using a tag transmitter (calculated by the controller 240). The location signal of 200 is transmitted on the frequency to the access point 310, and a control command output from the access point 310 is received and output to the control unit 240.

For example, the controller 240 may be implemented as a microcontroller in which a microprocessor for calculation and a peripheral circuit thereof are implemented as one chip, and receive the GPS signal output from the GPS receiver 210 to transmit the tag transmitter 200. Calculates a location, stores the calculated location information in the memory 220, generates a location signal including the identification information and the location information stored in the memory 220, and transmits and receives the access point ( 310).

In addition, the control unit 240 of the tag transmitter 200 according to the present invention continuously receives the GPS signal output from the GPS receiver 210 for a predetermined time for the accuracy of the position information calculated from the GPS signal, It detects the change of GPS signal and calculates the current position information when the change of signal is within the error range. Accordingly, more accurate current position determination is possible.

According to a further aspect of the present invention, the tag transmitter 200 according to the present invention further includes a power supply 250 for supplying driving power to each part of the tag transmitter 200. The power supply unit 250 is preferably implemented by a small battery, and supplies power so that each part of the tag transmitter 200 can operate. In addition, the power supply unit 250 may be external power supplied from the outside.

According to an additional aspect of the present invention, the tag transmitter 200 according to the present invention collects and converts sunlight into power to supplement the power consumed by the power supply unit 250 provided therein, and converts it into a power source. ) May further include a solar cell 260 to supply. Accordingly, the solar cell 260 collects and converts sunlight into a power source from sunrise to sunset, and supplies power to operate each part of the tag transmitter 200.

In addition, when the power supply unit 250 and the solar cell 260 are present together, the power is supplied by the solar cell 260 from sunrise to sunset, and after sunset, the tag transmitter 200 is driven by the power supply unit 250. As a result, the tag transmitter 200 can be driven for a long time.

According to an additional aspect of the present invention, the tag transmitter 200 according to the present invention normally enters an idle mode (Idle Mode) and maintains only a minimum function, and then drive signals to each part to drive the tag transmitter 200 at predetermined time periods. It further comprises a wake-up processing unit for outputting. In this case, the idle mode refers to a state in which all functions except for the wake-up processing unit 270 are terminated, for example, the minimum function of the tag transmitter 200.

The wakeup processing unit 270 has a built-in timer inside, for example, after a set time such as 8 hours, the wakeup signal is generated and output to the control unit 240. Accordingly, the control unit 240 receives and drives the wake-up signal, while being supplied with power to each part of the tag transmitter 200 to be driven, and when each part starts driving, from the GPS receiver 210. The current position information is calculated using the output GPS signal, stored in the memory 220, and the position signal including the identification information and the position information is transmitted to the access point through the transceiver 230. When the transmission of the position signal is finished, the control unit 240 enters the idle mode to minimize the use of power.

According to an additional aspect of the present invention, when the tag transmitter 200 according to the present invention normally enters an idle mode and maintains only a minimum function, and receives a wake-up signal output from the access point 310, Drive can be resumed. In this case, the idle mode refers to a state in which all other functions except the transmission / reception function are terminated.

When the wake-up signal is received through the transceiver 230, the controller 240 controls the power supply 250 to supply power to each part of the tag transmitter 200, and when each part starts driving, the GPS The current position information is calculated and stored in the memory 220 through the GPS signal output from the receiver 210, and the position signal including the identification information and the position information is transmitted to the access point through the transceiver 230. When the transmission of the position signal is finished, the control unit 240 enters the idle mode to minimize the use of power.

The wireless communication network 300 receives the position signals output from the transceiver 230 of the plurality of tag transmitters 200 and transmits them to the management server 400, and transmits the control commands output from the management server 400 to the plurality of tags. A wireless communication network transmitting to the transmitter 200. The wireless communication network 300 includes a plurality of access points 310 fixedly installed at a predetermined position of a product storage field in which a product is stored.

According to a characteristic aspect of the present invention, it is preferable that the wireless communication network 300 according to the present invention be implemented as a WLAN mesh network. WLAN mesh is a technology in which a plurality of wireless communication devices communicate like a net, commonly referred to as a wireless mesh. It is a new wireless network technology to overcome the limitations of the existing wireless LAN and is expected to play an important role as the next generation low power wireless technology for ubiquitous implementation.

In the conventional WLAN, a plurality of computers are connected around one access point 310 to configure a network in a point-to-point or point-to-multipoint manner. However, in a mesh network, devices with wireless functions communicate with each other to increase network reliability and to enable expansion with less power. An example of applying the WLAN Mesh to the present invention will be described in more detail with reference to FIG. 3.

3 is a schematic diagram showing a network configuration of a product storage field using a WLAN mesh according to an embodiment of the present invention. As shown, the WLAN mesh according to the present invention may be implemented with four access points 310, and each access point 310 communicates with each other as described above, thereby positioning signals transmitted from the tag transmitter 200. To be transmitted to the management server 400. For example, if only the first access point 310 closest to the management server 400 is connected through UTP and does not directly connect with the remaining access points 310 to 2, the second access point The location signal of the tag transmitter 200 recognized by the 310 may be provided to the management server 400 through the first access point 310.

In addition, when the connection state of the first access point 310 and the second access point 310 is uneven or broken, the position signal of the tag transmitter 200 recognized through the second access point 310 is determined by the third access point ( It may be normally provided to the management server 400 through the first access point 310 via 310.

In addition, if WLAN mesh is used, no additional work is required for a separate network configuration, and the power supply and access point 310 installation can also use the light power and the structure provided in the product storage field as it is, so that the network is relatively easy. It has the advantage of being configurable.

According to a further aspect of the present invention, the access points 310 according to the present invention relay and share the data to each of the management server 400 through one or more channels. Accordingly, the access points 310 communicate with the tag transmitter 200 through the frequency of the 2.4 GHz band, and relays the position information of the accessed tag transmitter 200 through the frequency of the 5.2 GHz band between each access point 310. Share and provide to the management server (400).

That is, by designating and using three channels of which frequency bands do not overlap among the multiple channels during communication between the access points 310, the mutual frequency collision between the communication between the access points 310 and the tag transmitter 200 is not generated. In addition, data loss prevention and stability can be guaranteed. In addition, the antenna of the access point 310 may be configured as two types of directivity and non-directional.

The management server 400 may be implemented as, for example, a personal or medium-capacity computer, and receives the location signal of the tag transmitter 200 transmitted from the access point 310 of the wireless communication network 300 connected through UTP. The position of each tag transmitter 200 is determined, and the determined position of the tag transmitter 200 is displayed on a status plate corresponding to the product storage field and provided to the manager. A description of this management server 400 will be described in more detail with reference to FIG. 4.

4 is a block diagram schematically illustrating a management server according to an exemplary embodiment of the present invention. As shown, the management server 400 according to the present invention is a location information database 410 in which the location information of each tag transmitter 200 is stored, and each of the tag transmitter 200 stored in the location information database 410 Identification information and location information of the status plate 420 corresponding to the product storage field in which the location is displayed, the communication unit 430 for transmitting and receiving data with the access point 310, and each tag transmitter 200 received from the communication unit 430. The location information collector 440 storing the received information in the location information database 410 and the location information of each tag transmitter 200 collected by the location information collector 440 and corresponding to the product storage field. It is configured to include a location information providing unit 450 to display and provide on the status plate 420.

The location information database 410 may be implemented by, for example, allocating a partial area of a large-capacity hard disk provided in the management server 400, and each tag transmitter 200 collected by the location information collection unit 440. ) Location information is stored for each identification information. The location information of the tag transmitter 200 stored as described above is accessed and controlled by the location information storage unit.

The status table is a kind of map corresponding to the product storage field installed in the location confirmation and inventory management system according to the present invention. The tag is referred to by referring to the location information of each tag transmitter 200 collected by the location information collecting unit 440. The position of the product equipped with the transmitter 200 is displayed on the map.

5 is a schematic diagram schematically showing a status plate provided by the management server 400 according to an exemplary embodiment of the present invention. As shown, the status board 420 according to the present invention is formed of a plurality of blocks (A ~ L) consisting of a plurality of product storage space, it is possible to check whether or not to store the product in the product storage space of each block. . In FIG. 5, the product storage space that is not colored indicates that the product is not stored.

Additionally, when a user clicks on an input device such as a mouse in the product storage space where the product is stored, information of the corresponding product may be provided. In addition, by displaying the brief information of the stored product on the status board 420 itself, the administrator can easily check the product.

The communication unit 430 is connected to any one of the access points 310, for example, UTP to receive a position signal transmitted from the tag transmitter 200, and controls the tag transmitter 200 through the access point 310. It can be implemented as a kind of communication module for transmitting a command.

The location information collection unit 440 receives the location signals of the plurality of tag transmitters 200 transmitted from the access point 310 through the communication unit 430, and provides location information for each identification information through identification information included in the location signal. The location information database 410 is stored.

The location information providing unit 450 accesses the location information for each tag transmitter 200 stored in the location information database 410 by the location information collecting unit 440 and displays the location information on the status board 420, and the management server 400 displays the location information. For example, it is provided through a display means such as a monitor.

Therefore, the manager can easily visually recognize where each product is stored in the product storage field through the status board 420 provided by the location information providing unit 450.

According to an additional aspect of the present invention, the management server 400 according to the present invention further comprises a wake-up signal transmitter 460 for generating and transmitting a wake-up signal to the tag transmitter 200 through the communication unit 430 at a predetermined time period. Include.

The wakeup signal transmitter 460 generates and sends a wakeup signal through the communication unit 430 when a time specified by the manager has elapsed. Upon receiving the wake-up signal, the access point 310 transmits the same to the other access point 310 so that the tag transmitter 200 of all products stored in the product storage field is activated in the idle mode.

  According to an additional aspect of the present invention, the management server 400 according to the present invention may check the inventory status for each type of the product whose location is identified and provide it to the manager. Accordingly, the management server 400 includes a product information database 470 storing product information for each identification information of the tag transmitter 200 and a position signal of each tag transmitter 200 collected by the location information collecting unit 440. The identification information of the corresponding tag transmitter 200 is extracted to refer to the product information database 470, and the inventory status of each product is displayed through the status plate 420 corresponding to the product storage field provided from the location information providing unit 450. It further includes a stock status providing unit 480 to check and provide.

The product information database 470 may be implemented by allocating a partial area of a large capacity hard disk provided in the management server 400, for example, and product information for each identification information corresponding to the identification information of the tag transmitter 200. Is stored. The product information thus stored is accessed and controlled by the inventory status providing unit 480.

The inventory status providing unit 480 extracts identification information from the location signal of each tag transmitter 200 collected by the location information collecting unit 440, and then extracts the identification information from the product information database 470 through the extracted identification information. Product information of the product provided with the transmitter 200 is extracted. In addition, referring to the status plate 420 in which the position of the tag transmitter 200 identified by the location information providing unit 450 is displayed, the stock status of each product stored in the current product storage field is checked and provided through the display means. .

Therefore, the product positioning and inventory management system according to the present invention has the advantage that it is easy to visually check the stock status of the product in addition to the exact positioning of the product.

6 is a schematic diagram schematically showing a product location confirmation and inventory management system according to another embodiment of the present invention. As shown, in accordance with an additional aspect of the present invention, the product positioning and inventory management system according to the present invention compensates for errors in the calculated position information to more accurately identify the position of the product. Accordingly, the product location confirmation and inventory management system according to the present invention further includes a position correction system for calculating the error of the position information calculated through the GPS signal transmitted from the GPS satellite 100 to provide to the management server 400, The management server 400 receives the position information error component output from the position correction system, and removes the error component from the position information of the plurality of tag transmitters 200 collected by the position information collecting unit 440 to position information. It further includes a position information correction unit 490 for correcting.

The position correction system is provided at the previously measured coordinates, receives a GPS signal output from the GPS satellite 100, calculates the position coordinates, and outputs the coordinates of the reference GPS receiver 500 and a predetermined distance from the reference GPS receiver 500. It is installed spaced apart, and comprises a DGPS (Differential Global Positioning System) receiver for calculating the error component by comparing the position coordinates measured from the reference GPS receiver 500 and the previously measured position coordinates.

The reference GPS receiver 500 calculates the position coordinates through the GPS signals received from the GPS antennas, which are pre-stored with the correct reference point, and outputs the calculated position coordinates to the DGPS receiver 600. At this time, the previously measured position coordinates stored in the reference GPS receiver 500 may be output at the same time.

DGPS is a relative positioning method that applies and corrects an error included in data measured at a reference point to data measured at a position away from the reference point. The DGPS receiver 600 detects an error component by comparing the position coordinates of the reference point that accurately knows the position with the position coordinates measured by the reference GPS receiver 500, and detects an error component of the position information correction unit 490 of the management server 400. Will output

The position information corrector 490 subtracts the error component output from the DGPS receiver 600 from the position information extracted from the position signal transmitted from each tag transmitter 200 through the access point 310 to reduce the accuracy of the measurement position. Improve. That is, since the error of the actual measured value at a point 100 to 200 km away from the reference point where the reference GPS receiver 500 is installed is similar to the error of the reference point, the position information corrector 490 removes an error component of the reference point from the measured position coordinates. By doing so, the accuracy of the measurement position can be improved.

1 is a schematic diagram schematically showing a product positioning and inventory management system according to an embodiment of the present invention.

2 is a block diagram schematically illustrating a tag transmitter according to an exemplary embodiment of the present invention.

3 is a schematic diagram showing a network configuration of a product storage field using a WLAN mesh according to an embodiment of the present invention.

4 is a block diagram schematically illustrating a management server according to an exemplary embodiment of the present invention.

5 is a schematic diagram schematically showing a status plate provided by a management server according to an exemplary embodiment of the present invention.

6 is a schematic diagram schematically showing a product location confirmation and inventory management system according to another embodiment of the present invention.

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

GPS satellite 200.Tag transmitter

210. GPS receiver 220. Memory

230. Transceiver 240. Controller

250. Power supply 260. Solar cell

270. Wake-up processing unit 300. Wireless communication network

310. Access Point 400. Management Server

410. Location Information Database 420. Status Plate

430. Communication unit 440. Location information collection unit

450. Location information provider 460. Wake-up signal transmitter

470. Product Information Database 480. Inventory Status Provider

490. Position information correction unit 500. Reference GPS receiver

600. DGPS Receiver

Claims (25)

delete delete delete delete delete delete delete A plurality of accesses each having identification information, receiving a GPS signal to calculate a current location, and receiving a location signal output from a plurality of tag transmitters wirelessly transmitting a location signal comprising the calculated location information and identification information point; It includes a management server to determine the position of each tag transmitter through the position signal of each tag transmitter output from the access point, and to display the determined position on the status plate corresponding to the product storage field; The management server includes a wake-up signal transmitter for transmitting a wake-up signal at a predetermined period, and the access point receives a wake-up signal sent from the wake-up signal transmitter and transmits the wake-up signal to the tag transmitter. Management system. The method of claim 8, wherein the product storage field is: And a plurality of blocks, each block divided into a plurality of designated product storage spaces. The system of claim 8, wherein the product location and inventory management system is: And a position correction system for correcting an error of position information calculated through a GPS signal transmitted from a GPS satellite to the management server. The system of claim 9, wherein the position correction system is: A reference GPS receiver provided at the previously measured coordinates to calculate a position coordinate by receiving a GPS signal output from a GPS satellite; Installed and spaced apart from the reference GPS receiver a predetermined distance, the product position checking and inventory, characterized in that it comprises a DGPS receiver for calculating the error component by comparing the measured position coordinates and the measured position coordinates from the reference GPS receiver Management system. The method according to claim 8, And the wireless communication network is a WLAN mesh network. The device of claim 8, wherein the access point is: Product sharing and inventory management system, characterized in that each relaying data through the determined one or more channels to provide to the management server. The method of claim 8, wherein the tag transmitter is: A GPS receiver for receiving and outputting a GPS signal from a GPS satellite; A memory having identification information, each of which stores current location information; A transmission / reception unit configured to transmit location information stored in the memory and to receive a control command output from the access point; A product location including a control unit for calculating current location information from the GPS signal output from the GPS receiver and storing the current location information in the memory and transmitting a location signal including the stored identification information and location information to the access point through the transceiver; Confirmation and inventory management system. The method of claim 14, wherein the tag transmitter is: And a wake-up processing unit for waking up the tag transmitter at a set cycle. The method of claim 14, wherein the control unit: The current position information is calculated and stored in the memory through a GPS signal output from the GPS receiver according to the wake-up signal received from the access point through the transceiver, and the stored position information is transmitted to the access point through the transceiver. Product positioning and inventory management system, characterized in that. The method of claim 14, wherein the tag transmitter is: And a power supply for supplying driving power for the tag transmitter. The method of claim 17, wherein the tag transmitter is: And a solar cell that collects and converts sunlight into a power source and supplies it to the tag transmitter. The method of claim 14, wherein the control unit: And continuously receiving the GPS signal output from the GPS receiver for a predetermined time and calculating current location information when the received GPS signal is within an error range. delete The system of claim 8, wherein the management server is: A location information database in which location information of each tag transmitter is stored; A status plate corresponding to a product storage field in which the position of each tag transmitter stored in the location information database is displayed; A communication unit for transmitting and receiving data with the access point; A location information collection unit for receiving identification information and location information of each tag transmitter received from the communication unit and storing the location information in the location information database; And a location information providing unit which displays and provides the location information corresponding to the product storage field by referring to the location information of each tag transmitter collected by the location information collecting unit. delete The server of claim 21, wherein the management server is: A product information database storing product information for each identification information of the tag transmitter; The identification information of the corresponding tag transmitter is extracted from the position signal of each tag transmitter collected in the location information collecting unit, and the product information database is referred to and the product is displayed through a status plate corresponding to the product storage field provided from the location information provider. Product location confirmation and inventory management system, characterized in that it further comprises a stock status providing unit for checking and providing the inventory status by type of. 24. The method of claim 10 or 23, wherein the management server is: Receiving a position information error component output from the position correction system, and further comprising a position information correction unit for correcting the position information by removing the error components from the position information of the plurality of tag transmitters collected by the position information collection unit Featured product positioning and inventory management system. The device of claim 13, wherein the access point is: Communicate with the tag transmitter through a frequency of 2.4 GHz band, relay location information of the tag transmitter accessed through the frequency of the 5.2 GHz band between each access point relay relay to provide to the management server And inventory management system.

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