KR102444593B1 - RTLS AND IoT BASED SMART MULTI-TAG AND SAFETY MANAGEMENT SYSTEM USING THE SAME - Google Patents

Abstract

A smart multi-tag device to which spatial awareness location tracking technology is applied is provided. This includes a GPS module, a wireless communication unit capable of wireless communication with receivers, an altitude sensor unit, an alarm unit, a storage unit, a power supply unit and a device control unit. The wireless communication unit includes a LoRa communication module, a Zigbee communication module, and an LF communication module. For such a tag device, location tracking is performed outdoors using GPS coordinates, and spatial recognition location tracking is performed indoors using an altitude sensor. In addition, in the safety management system, the same tag device can be placed on the operator, the device, and the danger area, and the distance can be calculated through the strength of the mutual communication frequency to give an alert.

Description

RTLS and IoT-based smart multi-tag device and safety management system using the same

The present invention relates to the field of wireless recognition technology for real-time location tracking and safety management for the development of smart safety technology based on IoT technology such as construction, civil engineering sites and industries, manufacturing site work, environment, safety, etc. It relates to a smart multi-tag device and a safety management system capable of real-time location tracking indoors and outdoors at a cost, and safety management through it as a method of developing spatial-aware location tracking technology.

Location tracking and confirmation using a multi-tag device capable of wireless recognition is being used in various fields. For example, the wireless tag is used to track the location of a transported article such as a container, or is used to check the inventory of each article.

Recently, wireless identification tags have been actively used as ID cards of workers or agents. For example, it is actively used for time and attendance management and safety management through real-time location tracking as well as commuting authentication of employees or workers with tags. This is possible because the wireless identification tag is contactless and enables a stable communication connection with the receiver even at a remote location. Therefore, automatic recognition is possible at once even if a plurality of tag holders pass through the receiver without taking the action of bringing their tags into contact with the receiver. Furthermore, in construction sites and industrial sites, by tracing the positions of workers individually, it is possible to determine the exact working status, so that it is possible to prevent misconduct of the workers as well as effectively warn them of access to the hazardous area.

However, the conventional wireless recognition tag described above has some limitations in having a configuration capable of tracking a location both indoors and outdoors. For example, while using GPS for outdoor location tracking is effective and common, indoor use of GPS is not possible. Therefore, it is necessary to install and use a plurality of receivers separately indoors, which is difficult in closed areas such as construction sites, industrial sites, civil tunnel sites, and underground mines where receivers are to be erected. In particular, in the construction site of a high-rise building with several tens of stories, tens of receivers are required because it is necessary to install a receiver on each floor. It is also the cause of the rise. Moreover, the traditional difficulties of radio-aware multi-tag devices are that there are many space constraints due to the installation of many receivers and that the power consumption of the tags is large. In particular, it is difficult to track the location of workers at the construction site of high-rise buildings and major plant sites, and when the wearer of the device moves within a wide area including indoors and outdoors, the battery is discharged quickly, and as a result, indoor and It was difficult to implement a configuration capable of outdoor location tracking.

The present invention is a smart multi-tag device that can be stably used for location tracking using spatial-aware location tracking technology even in a high-rise area working space in a field including an underground closed area and indoors and outdoors, in consideration of the problems of the prior art described above. to provide.

The present invention provides a safety management system that can be economically implemented using an improved IoT technology-based smart multi-tag device.

The present invention provides a smart multi-tag device, comprising: a GPS module unit; a wireless communication unit capable of wireless communication with receivers; altitude sensor unit; alarm unit; storage; power supply; and a device control unit; and the wireless communication unit may include a LoRa communication module, a Zigbee communication module, and an LF communication module.

The LoRa communication module may be used for mid-to-long-range wireless communication.

The device controller may determine the distance between the multi-tag devices based on the transmission/reception radio wave strength between the Zigbee communication modules of the multi-tag devices.

The LF communication module can communicate with the access authentication receivers installed in the entrance.

The device control unit may determine whether the multi-tag device is located indoors or outdoors through authentication through the LF communication module.

The device control unit may apply "space-aware location tracking" to determine the wearer's floor-by-floor position using the altitude sensor unit.

The device control unit may alternately convert the GPS module unit to a sleep mode when the multi-tag device is located indoors and convert the altitude sensor unit to a sleep mode when located outdoors.

The present invention further provides a safety management system, comprising: any one of the above-mentioned smart multi-tag devices distributed to each object; at least one wireless transceiver installed to enable wireless communication connection with the smart multi-tag device; Access authentication receivers installed at the indoor entrance and installed to authenticate the corresponding tag device through a communication connection with the LF communication module of the tag device; and a system controller communicatively connected to the at least one wireless transceiver, wherein the system controller tracks the location of the smart multi-tag device in real time.

The at least one wireless transceiver may include a LoRa wireless communication transceiver, and the system controller may receive a GPS coordinate value or an altitude value of each smart multi-tag device through LoRa wireless communication and track the location of the corresponding multi-tag. .

When each multi-tag device is located outdoors, the system control unit tracks the location of the multi-tag device with GPS coordinates, and when each multi-tag device is located indoors, it uses the LF module and the altitude value of the multi-tag device. location can be determined.

The system utilizes a wireless communication LoRa wireless communication module for environmental safety management of each site, wireless communication of hazardous gas sensors, wireless communication of fall prevention safety sensors of building constructions, and safety management used for wireless communication of work area safety management system can be provided.

According to the present invention, there is provided a smart multi-tag device capable of both indoor and outdoor positioning at an economical minimum cost. The location of each worker in high-rise buildings such as construction sites, construction sites, housing construction sites, tunnels and roads, infrastructure construction sites such as tunnels and roads, and plant construction sites, as well as in all construction sites, by identifying the location of each worker through spatial recognition location tracking technology using an altitude sensor. Tracking and safety management are possible. In particular, by using an altitude sensor and LoRa communication module to track indoor and outdoor locations such as high-rise buildings and plant sites, there is no need to install a large number of receivers on each floor, so a low-cost location tracking system can be configured. An emergency evacuation can be induced by attaching a multi-tag of the same type to such a danger area or dangerous material, and generating an alarm when the wearer multi-tag approaches the danger area. As described above, since the multi-tag of the same type can be used for multiple purposes, the cost can be further reduced. Furthermore, it is possible to minimize power consumption by properly inducing each element to a sleep mode according to the location of the smart multi-tag device.

1 is a view showing a construction site to which a safety management system including a smart multi-tag device of the present invention is applied.
2 is a view showing the appearance of a smart multi-tag device of the present invention.
3 is a diagram schematically illustrating a block diagram of the smart multi-tag device of FIG. 2 .

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In describing the embodiment of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

The present invention provides a smart multi-tag device to which a spatial recognition location tracking technology capable of real-time location tracking both indoors and outdoors is applied. Such a smart multi-tag device can be very suitably applied to situations where workers need to come and go indoors and outdoors, such as building construction sites, tunnel construction sites, underground mines, plants, and ship manufacturing sites. In particular, the smart multi-tag device of the present invention includes an altitude sensor and LoRa communication capable of mid-to-long-range wireless communication, so that the wearer's location on each floor in a high-rise building construction site can be identified at an economical minimum cost. As described above, location tracking and identification can be implemented even with a minimum arrangement of a receiving/relaying device in the present invention. Furthermore, in the present invention, the occurrence of an accidental discharge during use is suppressed and stable operation is possible by minimizing power consumption while location tracking including spatial recognition location tracking is performed both indoors and outdoors. This can be implemented by alternately operating the GPS module and the altitude sensor.

1 is a view showing a construction site to which a safety management system including a smart multi-tag device of the present invention is applied. 2 is a view showing the appearance of a smart multi-tag device of the present invention. 3 is a diagram schematically illustrating a block diagram of the smart multi-tag device of FIG. 2 .

[Smart Multi-Tag Device]

First, a smart multi-tag device according to a preferred embodiment of the present invention will be described with reference to the drawings. For reference, the smart multi-tag device of the present invention can be attached in the same configuration to work equipment or dangerous areas other than worn by the user, and the multi-tag attached to the wearer or mobile equipment and devices can be attached to the danger zone (other devices or dangerous goods area). When approaching another multi-tag attached to the device, the multi-tag of the wearer or the mobile device can provide an alarm so that the proximity mutual warning function can be used. Therefore, hereinafter, the multi-tag device of the present invention is indicated by 10, but in particular, the multi-tag of the wearer may be indicated as 10A, the multi-tag of the mobile device may be indicated as 10B, and the multi-tag attached to the danger area may be indicated as 10C.

Referring to the drawings, the smart multi-tag device 10 according to a preferred embodiment of the present invention includes a GPS module unit 150 , wireless communication units capable of wireless communication with receivers 121 , 122 , 123 , and an altitude sensor unit 170 . ), an alarm unit 140 , a storage unit 160 , a power supply unit 180 , and a device control unit 110 .

Here, the wireless communication unit may include a LoRa communication module 121 , a Zigbee communication module 122 , and an LF communication module 123 .

The LoRa communication module 121 is used for mid-to-long-range wireless communication. For example, as illustrated in FIG. 1 , a small number of transceivers 20 may be installed at a construction site to cover the entire unit area (construction site). LoRa communication has a communication distance of several kilometers, and wireless communication connection is possible with smart multi-tag devices inside high-rise buildings under construction.

Through such LoRa communication, the transceiver 20 and the smart multi-tag device 20 are communicatively connected, so that the location of each individual smart multi-tag device can be tracked.

The Zigbee communication module 122 is used to measure the distance between smart multi-tag devices. For example, the Zigbee communication module 122 can know the distance between the smart multi-tag devices through the communication frequency strength, and it is possible to track the location of a worker based on the location of a special site, that is, an underground construction site, a tunnel, and a closed area. .

This allows the same smart multi-tag device to be attached to all workers, devices, and hazardous areas, and alerts when an operator or moving object approaches the hazardous area or device. In particular, the cost of system configuration is reduced in that the same smart multi-tag device of the present invention can be applied to all workers, devices, and hazardous areas.

The LF communication module 123 enables authentication by performing wireless communication with the access authentication receiver 22 disposed at the entrance of a building under construction as illustrated in FIG. 1 . Also, when the corresponding smart multi-tag device 10 passes through an entrance, the device controller 110 may determine whether the corresponding smart multi-tag device 10 is located indoors or outdoors. Accordingly, the device control unit 110 may minimize power consumption by converting the GPS module 150 or the altitude sensor 170 to the sleep mode.

For example, when the smart multi-tag device 10 worn by the worker passes through the access authentication receiver 22 and is in the building, the device control unit 110 converts the GPS module 150 to a sleep mode to switch the GPS module ( 150) may not waste energy with this GPS communication connection operation. Conversely, when the corresponding smart multi-tag device 10 is outdoors, power consumption can be minimized by switching the altitude sensor 170 to a sleep mode.

The altitude sensor unit 170 is an element for detecting the altitude of the corresponding smart multi-tag device 10 . It may be configured to detect a pressure difference to perform spatially-aware location tracking. When the corresponding smart multi-tag device 10 is indoors, the location can be tracked by the altitude value. In addition, it can be used outdoors and in other areas by applying spatial-aware location tracking technology using an altitude sensor if necessary in a dangerous site.

On the contrary, when the smart multi-tag device 10 is located outdoors, the location of the corresponding smart multi-tag device 10 is tracked through the GPS coordinate value.

The alarm unit 140 is an element indicating an alarm according to a signal from the device control unit 110 . For example, when the smart multi-tag device 10A worn by the operator approaches the devices 10B and 10C in the danger area, an alarm is performed under the control of the device controller 110 . The alarm may include, for example, sound, lighting, vibration, and the like.

The storage unit 160 stores a program for driving the smart multi-tag device 10 , device and user ID information, and other information.

The power supply unit 180 is an element that supplies power to elements of the device, such as a secondary battery.

The acceleration sensor 190 is a sensor that detects the intensity of acceleration, movement, or impact of the device. Through the intensity of the shock sensed by the wearer's acceleration sensor 190, it can be determined that a problem has occurred to the wearer, and after confirmation, prompt action can be taken.

The device control unit 110 is an element that controls overall elements of the above-described device.

The smart multi-tag device 10 as described above can minimize power consumption while enabling location tracking including spatial recognition location tracking technology both indoors and outdoors. Such minimization of power consumption may be a major configuration that enables indoor and outdoor location tracking on the contrary. Existing tag devices consume excessive power to perform both indoor and outdoor location tracking, making it impossible to implement such a configuration or requiring frequent charging, which causes severe inconvenience. However, the smart multi-tag device 10 of the present invention minimizes power consumption by converting unnecessary elements to a sleep mode to minimize power consumption according to indoor and outdoor locations.

[Safety Management System]

1, the safety management system of the present invention will be described.

In the safety management system of the present invention, the smart multi-tag devices 10A, 10B, and 10C described above are commonly used for workers, equipment, and hazardous areas.

The safety management system includes at least one transceiver 20 for LoRa communication. The transceiver 20 periodically communicates with the smart multi-tag devices 10 .

The system controller 40 tracks and stores the locations of the smart multi-tag devices 10 in real time.

In addition, when the smart multi-tag device 10 approaches a dangerous area while the system controller 40 is tracking the location, a signal may be transmitted to the corresponding smart multi-tag device 10 to perform an alarm operation, and the smart multi-tag device 10 may ), the device control unit 110 may control the alarm unit 140 to operate.

In addition, the smart terminal 50 may be connected to the system control unit 40 through a communication connection using the Internet or the like to receive predetermined information or input a control signal. Reference numeral 60 denotes an antenna that may be employed to facilitate wireless communication between elements.

The safety management system includes an access authentication receiver 22 disposed at the entrance of a building in addition to the wireless transceiver 20 for LoRa communication. The access authentication receiver 22 may authenticate the smart multi-tag device passing through communication with the LF module of the smart multi-tag device.

At least one wireless transceiver 20 performs LoRa wireless communication with the smart multi-tag devices 10A, 10B, and 10C. The system controller 40 receives the GPS coordinates or altitude values of each smart multi-tag device through LoRa wireless communication and tracks the location of the corresponding multi-tag.

When each multi-tag device is located outdoors, the system controller determines the location of the multi-tag device by using the GPS coordinate value, and when each multi-tag device is located indoors, the location of the multi-tag device is determined using an access authentication receiver and an altitude value. location can be determined.

As mentioned above, although specific embodiments have been described in the detailed description of the present invention, it will be apparent to those of ordinary skill in the art that various modifications are possible without departing from the scope of the present invention.

10, 10A, 10B, 10C: Smart multi-tag device 20: Transceiver device
22: access authentication receiver 40: system control unit
50: smart terminal 60: antenna
110: device control unit 121: LoRa communication module
122: Zigbee module 123: LF module
140: electronic compass 150: GPS module
160: storage unit 170: altitude sensor unit
180: power supply 190: acceleration sensor

Claims (10)

As a smart multi-tag device:
GPS module unit;
a wireless communication unit capable of wireless communication with receivers;
altitude sensor unit;
alarm unit;
storage;
power supply; and
device control unit; including;
The wireless communication unit includes a LoRa communication module, a Zigbee communication module, and an LF communication module,
The LoRa communication module is used for mid-to-long-range wireless communication,
The LF communication module communicates with the access authentication receivers installed at the entrance,
The device control unit determines whether the indoor and outdoor locations of the multi-tag device through authentication through the LF communication module,
The device control unit determines a distance between the multi-tag devices through transmission/reception radio wave strength between Zigbee communication modules of the multi-tag devices,
The device control unit uses the LoRa communication module and the altitude sensor unit to determine the location of each floor of the wearer's spatial recognition location tracking,
The device control unit performs an alarm when the wearer approaches the danger area using the alarm unit,
The device controller alternately converts the GPS module unit to a sleep mode when the multi-tag device is located indoors and converts the altitude sensor unit to a sleep mode when the multi-tag device is located outdoors.
delete delete delete delete delete delete As a construction site safety management system:
The smart multi-tag device of claim 1 distributed to each object in the operator, equipment, and danger area;
at least one wireless transceiver installed to enable wireless communication connection with the smart multi-tag device;
Access authentication receivers installed at the indoor entrance and installed to authenticate the corresponding tag device through a communication connection with the LF communication module of the tag device; and
Including; a system control unit communicatively connected to the at least one radio transmission/reception
The system control unit tracks the location of the smart multi-tag device in real time,
The at least one wireless transceiver includes a LoRa wireless communication transceiver disposed to cover the entire construction site,
The system controller receives GPS coordinates or altitude values of each smart multi-tag device through LoRa wireless communication and tracks the location of the multi-tag,
The system control unit transmits a signal to perform an alarm operation to the smart multi-tag device when the smart multi-tag device approaches a dangerous area during location tracking.
delete 9. The method of claim 8,
When each multi-tag device is located outdoors, the system control unit tracks the location of the multi-tag device with a GPS coordinate value, and when each multi-tag device is located indoors, the multi-tag device uses an access authentication receiver and an altitude value. A safety management system that tracks the location of

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