KR102831480B1 - Portable emergency lighting system and its management method - Google Patents

Abstract

The present invention relates to a management method for a portable emergency lighting system in which at least one portable lighting device is installed per zone, the management method including: a step of registering the portable lighting device; a step of monitoring status information of the registered portable lighting device; a step of collecting data based on the status information; a step of monitoring location information of the portable lighting device when an emergency mode or removal of the portable lighting device is detected; a step of generating an alarm and recording first event information when the location information of the portable lighting device is changed and the changed location information is unauthorized location information; and a step of notifying the first event information to a terminal device connected to the portable emergency lighting system.

Description

{Portable emergency lighting system and its management method}

The present invention relates to a lighting system, and more particularly, to a portable emergency lighting system utilizing the Internet of Things (IoT).

GPS (global positioning system) was developed for military purposes, and with the opening of civilian signals (GPS L1 frequency C/A signals), navigation systems that utilize it as they are now typically have a positioning error of 5 to 10 meters. However, considerable areas such as apartments, indoors, tunnels, industrial complexes, and mountainous areas exist as blind spots or neutralized areas outside the error range of GPS.

In the event of a large-scale disaster, it is difficult for rescue workers to identify the location of people in indoor buildings due to concrete walls and various shielding facilities. In the case of forest fire disaster sites in mountainous terrain or open areas, it is also difficult to identify the exact location of the person in distress due to smoke, wind, and flammable materials. Accurate location information is also necessary to prevent missing children, manage elderly people living alone, and provide social care to vulnerable groups including women.

With the rapid development of IoT, IoT technology is being incorporated and used in devices throughout society, and there are also rescuers' equipment that incorporates various IoT technologies and is being used or is in the testing stage. However, there are limitations in identifying the location of the person in need of rescue from the rescuer's perspective.

Patent Registration No. 10-2212200 (registration notice on February 4, 2021)

In an embodiment of the present invention, a technology is proposed that allows a person in need of rescue to send his or her location information to the relevant person or rescue team, thereby avoiding confusion among rescue team members and enabling rescue to be carried out quickly.

In an embodiment of the present invention, a communication device is attached to a portable light that can be easily held and moved by a user, and a portable light utilizing LoRa (long range) that is easy to integrate with 5G technology and enables long-distance communication is developed.

In an embodiment of the present invention, a magnetic location generating device using a LoRa WAN (wide area network) in a closed terrain space is developed.

The problems to be solved by the present invention are not limited to those mentioned above, and other problems to be solved that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present invention belongs from the description below.

According to an embodiment of the present invention, a method for managing a portable emergency lighting system in which at least one portable lighting device is installed per zone can be provided, the method including: registering the portable lighting device; monitoring status information of the registered portable lighting device; collecting data based on the status information; monitoring location information of the portable lighting device when an emergency mode or removal of the portable lighting device is detected; generating an alarm and recording first event information when the location information of the portable lighting device is changed and the changed location information is unauthorized location information; and notifying the first event information to a terminal device connected to the portable emergency lighting system.

Here, the registering step may include a step of registering an ID (identification) of the portable lighting device and a unique number for each location within the area.

Additionally, the status information may include at least one of a power status, a communication status, a detachment status, and a control status of the portable lighting device.

Additionally, the above location information may be encrypted location information.

Additionally, the above location information can be obtained using a triangulation method.

In addition, the method may further include a step of updating the location information and recording second event information if the changed location information is authorized location information; and a step of notifying the second event information to the terminal device.

In addition, the method may further include a step of collecting the state information, the location information, and the event information; a step of preprocessing the collected data collected by the collecting step to process it into history data of the portable lighting device; a step of inputting the history data into a learning model installed in a program within the portable emergency lighting system; and a step of training the learning model to output location information of the portable lighting device as a learning result using the history data as an input.

In addition, the method can train the learning model to obtain the history data through the learning model and output a learning result for determining whether the history data has a similarity higher than a threshold value or a similarity lower than a threshold value with the area-specific location information of the portable lighting device, which is label data.

In addition, the learning model is a supervised learning-based learning model, and the method can train the learning model by inputting the label data in which history data having a similarity higher than a threshold value is labeled as true, and history data having a similarity lower than the threshold value is labeled as false through the learning model.

Additionally, the learning model can generate a loss function to reduce the difference between the label data and the learning result.

In addition, the method may further include a step of collecting the state information, the location information, and the event information; a step of preprocessing the collected data collected by the collecting step and processing it into history data of the portable lighting device; a step of inputting the history data into a learning model installed in a program within the portable emergency lighting system; and a step of predicting the location information of the portable lighting device through the learning model using the history data as input.

According to an embodiment of the present invention, a computer-readable recording medium storing a computer program, the computer program including instructions for causing a processor to perform a management method of a portable emergency lighting system in which at least one portable lighting device is installed per zone, the method including: a step of registering the portable lighting device; a step of monitoring status information of the registered portable lighting device; a step of collecting data based on the status information; a step of monitoring location information of the portable lighting device when an emergency mode or removal of the portable lighting device is detected; a step of generating an alarm and recording first event information when the location information of the portable lighting device is changed and the changed location information is unauthorized location information; and a step of notifying the first event information to a terminal device connected to the portable emergency lighting system.

According to an embodiment of the present invention, a computer program stored in a computer-readable recording medium, the computer program including instructions for causing a processor to perform a management method of a portable emergency lighting system in which at least one portable lighting device is installed per zone, the method including: a step of registering the portable lighting device; a step of monitoring status information of the registered portable lighting device; a step of collecting data based on the status information; a step of monitoring location information of the portable lighting device when an emergency mode or removal of the portable lighting device is detected; a step of generating an alarm and recording first event information when the location information of the portable lighting device is changed and the changed location information is unauthorized location information; and a step of notifying the first event information to a terminal device connected to the portable emergency lighting system.

According to an embodiment of the present invention, a portable emergency lighting system may be provided, comprising: at least one portable lighting device installed in a designated area; at least one gateway connected to each of the portable lighting devices and transmitting status information and location information of the portable lighting device; and a control device registering the portable lighting device, monitoring status information of the registered portable lighting device, collecting data based on the status information, monitoring location information of the portable lighting device when an emergency mode or removal of the portable lighting device is detected, and recording changed location information as event information when the location information of the portable lighting device is changed; and a terminal device notified of the event information from the control device.

Here, the portable lighting device may include a power supply unit that supplies power; a lighting unit that irradiates light based on power supplied from the power supply unit; a communication unit that communicates with the gateway; and a control unit that controls the supply of the power and controls the communication unit so that the status information and the location information are transmitted to the gateway, while encrypting the location information.

In addition, the portable lighting device is included in the gateway and the LoRa (long range) communication environment, and the gateway can be connected to the control device through a LoRa WAN (long range wide area network).

In addition, the control device may include a communication unit that communicates with the gateway through the LoRa WAN; a GIS (geographic information system) unit that measures the communication sensitivity of the status information; a decryption unit that decrypts location information received through the gateway; and a control unit that receives the location information decrypted through the decryption unit, generates an alarm when the location information is changed and, if the changed location information is unauthorized location information, records first event information, and notifies the first event information to the terminal device, and updates the location information and records second event information if the changed location information is authorized location information, and notifies the second event information to the terminal device.

In addition, the control unit collects the status information, the location information, and the event information, preprocesses the collected data collected by the collecting step to process it into history data of the portable lighting device, inputs the history data into a learning model installed in a program within the control unit, and predicts the location information of the portable lighting device through the learning model using the history data as input.

In addition, the control device further includes a storage unit in which the learning model is stored, and the learning model can be trained to obtain the history data and output a learning result for determining whether the history data has a similarity higher than a threshold value with the zone-specific location information of the portable lighting device, which is label data, or a similarity lower than a threshold value.

According to an embodiment of the present invention, the effect that can be expected when actually using a portable lighting device with IoT technology applied is that it can be used as a device that can transmit the occurrence of an emergency situation and its location to a disaster prevention room just by pulling out the device. In a wide space such as a fire where it is difficult to search for a person in need of rescue, the location and movement route of a portable lighting device presumed to be used by a person in need of rescue can be confirmed within a building, and if this information is transmitted to rescue workers, it is expected to contribute to reducing casualties. Since a portable lighting device with IoT technology applied does not share location information such as a mobile phone, complex problems related to personal information and security can also be easily resolved. In an emergency, the location of the portable lighting device is activated, allowing a disaster prevention room or firefighters to quickly identify the location of a person in need of rescue, thereby securing the golden time, and in particular, as equipment that can protect the lives of the people in the event of a disaster, it is possible to organically respond quickly by establishing a digitalized hotline (firefighting, police). It is expected that the present invention will create a great effect in places where tracking of rescued persons for firefighting purposes or self-location tracking is required for industrial purposes.

FIG. 1 is a block diagram illustrating the function of a portable emergency lighting system (1) according to an embodiment of the present invention.
FIG. 2 is a block diagram specifically explaining the function of the portable lighting device (100) of FIG. 1.
Figure 3 is a block diagram specifically explaining the function of the control device (200) of Figure 1.
FIG. 4 is a block diagram for exemplarily explaining a learning method of a learning model (252) constructed in a storage unit (250) of a control device (200) of FIG. 3.
FIG. 5 is a block diagram exemplarily explaining a method for predicting the position of a portable lighting device (100) using the learning model (252) of FIG. 4.
FIG. 6 is a flowchart exemplarily explaining a management method of a portable emergency lighting system (1) according to an embodiment of the present invention.
FIG. 7 is a conceptual diagram illustrating a method for detecting location information of a portable lighting device (100) in the location information monitoring process (S108) of FIG. 6.
Figure 8 is a conceptual diagram illustrating a case in which the location information detection method of Figure 7 is actually applied.
FIG. 9 is a conceptual diagram illustrating another method of detecting location information of a portable lighting device (100) in the location information monitoring process (S108) of FIG. 6.

The advantages and features of the present invention, and the methods for achieving them, will become clear with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, and these embodiments are provided only to make the disclosure of the present invention complete and to fully inform those skilled in the art of the scope of the invention, and the scope of the present invention is defined only by the claims.

In describing embodiments of the present invention, specific descriptions of known functions or configurations will be omitted unless they are actually necessary for describing embodiments of the present invention. In addition, the terms described below are terms defined in consideration of functions in embodiments of the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, the definitions should be made based on the contents throughout this specification.

LoRa (long range) is a communication standard created for IoT communication. Unlike other communication standards, it is capable of communicating up to 10 miles (16 km) in a good environment with ultra-long-distance connection and low power.

LoRa itself is not a communication standard, unlike NB-IoT or SigFox, but a modulation method, so it does not provide a special protocol for communication. Therefore, addresses and data can be used in any way the user wants, and the communication standard created for wide area network communication is LoRa WAN (wide area network).

LoRa WAN provides not only a regional profile for legal communication operation, but also a LoRa MAC, which is a proper node address, and a security layer for communication security, making it possible to build a proper sensor network.

LoRa WAN can provide three specifications: A, B, and C, depending on the application.

Class A: Bidirectional ultra-low power, this is the profile that all LoRa WAN-supporting devices must support by default. Since the communication cycle is always determined by the end node, it can be made without the need for constant operation, so it has the lowest battery consumption, but instead, although the uplink is possible right away, the downlink is possible only when the uplink is activated, so communication is very limited.

Class B: Unlike Class A, it sends periodic beacon signals to check whether a downlink to the end node is needed. It is more flexible than Class A, but requires additional power consumption.

Class C: A profile that always opens the downlink on the end node side. The gateway can send a signal directly to perform the downlink, but since the receiver must always be on, it requires additional power consumption. The application area is FOTA, and many devices have the function to temporarily change Class A-supporting devices to Class C for this purpose.

In an embodiment of the present invention, a network service technology capable of efficiently identifying the location of a portable lighting device mainly placed indoors is proposed by using the LoRa communication environment and LoRa WAN.

First, in order to implement an embodiment of the present invention, it is necessary to consider the portable lighting control, information collection, and installation location as follows.

a) Portable lighting control system

(1) Service desk (information)

Configuration Management: Registering and Positioning Portable Lighting

Fault management: Receive status information of portable lighting to identify faults

Event Management: Manage the location fault history of portable lighting devices

Problem Management: Manage various problems based on failure history in event management.

Change Management: Change the location of each piece of equipment, add, delete

(2) Dashboard

Emergency management: If a portable lighting device is moved without permission or in the event of an emergency disaster, the location of the lighting device is indicated with an alarm.

Continuous situation management service: Display the permanent location of portable lighting devices

b) Information collection center

(1) Information processing operation

Decrypt the location information of the portable lighting device transmitted from the LoRa gateway and send it to the device history information.

(2) Device History

Manages all history information of portable lighting devices and immediately notifies the dashboard when a portable lighting device is unauthorized or abnormal.

(3) Location information

A function that manages the unique number (MAC address) of a portable lighting device, calculates the location of the device, and then stores and notifies it.

D) Installation location

(1) Portable lighting

Portable lights including LoRa modules are installed in each area and only transmit equipment status information at all times, and transmit location information in the event of departure or emergency.

(2) LoRa communication module

Location information is transmitted only with the reception sensitivity of the LoRa gateway and security is transmitted with AES128.

(3) Field information module

A module that processes information with an MCU (micro controller unit) that controls portable lighting device information and transmits it to a communication module.

In addition, the following technical support is required in the embodiment of the present invention.

a) Implementation of indoor location-based algorithm and distance shortening logic

Location-based coordinate services for outdoor use (e.g. GPS) have been developed with various technologies, but indoor location identification still uses area sensors and recognition terminals, and solution designs are inefficient due to distance restrictions using short sections and frequencies when using APs and mounting multiple GateWares. Accordingly, we plan to conduct a technology inspection and technology module-by-technology development for business promotion using the WAN method, a LoRa communication technology that can recognize locations at maximum distance and efficiently indoors. The goal is to develop 'indoor wide-range location transmission' within ±8m to ±10m with improved accuracy than the existing location recognition accuracy of ±4.5m to ±12.5m, and it is possible to implement a self-coordinate transmission process while distinguishing locations between multiple layers with a precision of ±10m.

b) Implementation of an indoor-based Z-axis level positioning algorithm

Development of location divergence accuracy within ±8m to ±10m by using recognition (X-axis, Y-axis: horizontal) and accurate level (Z-axis: floor) positioning technology as a basic triangulation method to implement Safe Location coordinate accuracy.

D) Accuracy within the mutual terminal

It is necessary to develop a commercial product for integrated technology for rapid indoor location tracking of firefighters. It is necessary to develop a location-finding distance algorithm by measuring the accuracy between portable lights and safety managers' terminals and measuring the degree of each other's terminals, and to implement a real-time location coordinate map that considers the direction of transmission and to display the location at all times.

In addition, the following development scope is required in the embodiment of the present invention.

a) It is necessary to develop a portable emergency lighting LED module and power control unit.

(1) Development of portable emergency lighting LED module power supply:

Lighting Department: Development of low power circular LED modules and power regulation modules

Power supply: Select a 5V rechargeable battery and develop an integrated charging module and rechargeable battery, and develop an integrated lighting unit and power supply.

(2) Portable emergency lighting test:

Portable emergency light power always ON duration test

Constant time illuminance testing of LED lighting

Testing the charging time of the rechargeable battery that powers the portable emergency light

A) Development of LoRa communication module and MCU configuration for information processing notification

(1) LoRa communication module

LoRa is a communication technology that transmits small data over long distances. It is a communication method similar to Bluetooth or Zigbee, but unlike these, it can transmit data over a considerably long distance. It can transmit up to about 15 km, and in areas without obstacles such as the sea, it can transmit up to 100 km.

(2) Field information module

A module is required to process information from a MCU (micro controller unit) that controls portable emergency lighting information and transmit it to a communication module.

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

FIG. 1 is a block diagram illustrating the function of a portable emergency lighting system (1) according to an embodiment of the present invention.

As illustrated in FIG. 1, a portable emergency lighting system (1) may include a portable lighting device (100), a gateway (102), a first network (10), a control device (200), a second network (20), and a terminal device (300).

The portable lighting device (100) may be installed in multiple designated areas, mainly in enclosed terrain spaces, such as subway platforms, underground shopping malls, and underground parking lots, of underground buildings. Here, the designated areas may include specific areas that can be easily recognized by rescuers in the event of an emergency, such as an emergency exit, an evacuation route, and an escape route, for example. Although the portable lighting device (100) is illustrated as a single device in FIG. 1, this is only an example to help understand the embodiment, and the specific functions of a specific portable lighting device will be described in more detail in FIG. 2 below.

A plurality of gateways (102) can be connected to each of the plurality of installed portable lighting devices (100) to transmit status information and location information of the portable lighting devices (100). For example, at least three gateways (102) can be connected to each of the plurality of installed portable lighting devices (100).

These gateways (102) and portable lighting devices (100) can be included in a LoRa communication environment, and the gateway (102) can be connected to a control device (200) through a first network (10) described below.

The first network (10) is a network that enables a portable lighting device (100) and a gateway (102) in a LoRa communication environment to be connected to a control device (200). This first network (10) may include, for example, a short-distance communication network such as a local area network (LAN), a WAN, and an ultra-wide band (UWB). However, the communication method of this first network (10) is only an example, and networks of various communication methods may be applied.

The control device (200) registers a portable lighting device (100), monitors status information of the registered portable lighting device (100), collects data based on the status information, monitors location information of the portable lighting device (100) when an emergency mode or removal of the portable lighting device (100) is detected, and records the changed location information as event information when the location information of the portable lighting device (100) is changed. The specific functions of the control device (200) will be described in more detail in FIG. 3 below.

The second network (20) is a network that connects the control device (200) and the terminal device (300) described below. This second network (20) may include a wide-area communication network such as the Internet or a mobile communication network, a short-range communication network such as a LAN, WAN, or UWB, and may interconnect the control device (200) and the terminal device (300). However, the communication method of this second network (20) is only an example, and networks of various communication methods may be applied.

The terminal device (300) can communicate with the control device (200) via the second network (20). Such terminal device (300) may include, for example, a terminal device of a firefighter in an emergency situation, a terminal device of a subway station worker, etc., and may receive event information from the control device (200).

FIG. 2 is a block diagram specifically explaining the function of the portable lighting device (100) of FIG. 1.

As shown in FIG. 2, a portable lighting device (100) according to an embodiment of the present invention may include a communication unit (110), a control unit (120), a power supply unit (130), and a lighting unit (140).

The communication unit (110) can provide a communication environment for communicating with a gateway (102) of a LoRa communication environment. For example, the communication unit (110) can transmit status information and location information of a portable terminal device (100) collected by the control unit (120) to the gateway (102) under the control of the control unit (120).

The control unit (120) controls the power supply of the portable lighting device (100) and controls the communication unit (110) so that status information and location information are transmitted to the gateway (102), and the location information of the portable terminal device (100) can be encrypted. Here, encryption is a process for preventing the status information and location information of the portable terminal device (100) from being exposed to a third party.

The power supply unit (130) can supply power to the portable lighting device (100) under the control of the control unit (102). The power supply unit (130) can be a battery that can operate at low power in a LoRa communication environment.

The lighting unit (140) can irradiate light based on power supplied from the power supply unit (130). This lighting unit (140) can be applied with LEDs (light emitting diodes) that can be operated with low power in a LoRa communication environment.

Figure 3 is a block diagram specifically explaining the function of the control device (200) of Figure 1.

As illustrated in FIG. 3, a control device (200) according to an embodiment of the present invention comprises: a communication unit (210) that communicates with a gateway (102) via LoRa WAN; a GIS (geographic information system) unit (220) that measures the communication sensitivity of status information of a portable lighting device (100) provided via the gateway (102); a decryption unit (230) that decrypts location information received via the gateway (102); A control unit (204) that receives location information decrypted through a decryption unit (230), and when the location information is changed, if the changed location information is unauthorized location information, generates an alarm and records first event information in a storage unit (250), and enables the first event information to be notified to a terminal device (300) through a communication unit (210), and if the changed location information is authorized location information, updates the location information and records second event information in the storage unit (250), and enables the second event information to be notified to the terminal device (300) through the communication unit (210); A storage unit (250) that stores registration information, status information, location information, and event information of a portable lighting device (100) processed by the control unit (240), and stores a learning model that is learned to predict location information of the portable lighting device (100) based on collected data collected by the control unit (240); and a display unit (260) that displays and processes registration information, status information, location information, event information, and location information prediction results of the portable lighting device (100) to the user.

At this time, the control unit (204) collects status information, location information, and event information of the portable lighting device (100), preprocesses the collected data collected by the collecting step, processes it into history data of the portable lighting device (100), inputs the processed history data into a learning model installed in a program within the control unit (204), and predicts the location information of the portable lighting device (100) through the learning model using the history data as input.

FIG. 4 is a block diagram for exemplarily explaining a learning method of a learning model (252) constructed in a storage unit (250) of a control device (200) of FIG. 3.

The learning model (252) may be included in a separate program within the storage (250), for example, a portable lighting device management program, and the portable lighting device management program may be loaded by the control unit (240) to execute the learning model (252), or the learning model (252) may be learned by the control unit (240) to modify the portable lighting device management program.

This learning model (252) obtains history data (X) and determines whether the history data (X) has a similarity higher than a threshold value with the area-specific location information of the portable lighting device, which is the label data (y), or a similarity lower than a threshold value. ) can be learned to output. At this time, the history data (X) may include data obtained by preprocessing collected data collected from the portable lighting device (100). Here, the collected data may include status information, location information (registration and update information), and event information of the portable lighting device (100).

This learning model (252) is a learning model based on supervised learning, and the control unit (240) can train the learning model (252) by inputting label data (y) that labels history data (X) having a similarity higher than a threshold as true and history data (X) having a similarity lower than the threshold as false.

At this time, the learning model (252) uses the label data (y) and the learning result ( ) can be used to create a loss function that reduces the difference.

This learning model (252) may include a learning model based on supervised learning or a learning model based on unsupervised learning. In addition, the learning model (252) may include at least one of a machine learning model to which algorithms such as SVM (support vector machine) and linear regression are applied, and a deep machine learning model to which techniques such as CNN (Convolutional Neural Network) and DNN (Deep Neural Network) are applied, and is not limited to a learning model of a specific algorithm.

FIG. 5 is a block diagram exemplarily explaining a method for predicting the position of a portable lighting device (100) using the learning model (252) of FIG. 4.

The learning model (252) for location prediction obtains history data (X) and, based on the acquired history data (X), generates a learning result (which is a result of predicting location information of a portable lighting device (100) according to a learning network constructed in advance. ) can be output. At this time, the history data (X) may include data obtained by preprocessing the collected data collected from the portable lighting device (100). Here, the collected data may include status information, location information (registration and update information), and event information of the portable lighting device (100).

These learning models (252) may include learning models based on supervised learning or learning models based on unsupervised learning. In addition, the learning model (252) may include at least one of a machine learning model to which algorithms such as SVM and linear regression are applied, and a deep machine learning model to which techniques such as CNN and DNN are applied, and is not limited to a learning model of a specific algorithm.

Hereinafter, a management method of a portable emergency lighting system (1) according to an embodiment of the present invention, together with the above-described configuration, will be specifically described with reference to the flow chart of FIG. 6 attached.

A management method according to an embodiment of the present invention may include a management method of a portable emergency lighting system (1) in which at least one portable lighting device (100) is installed per zone.

As shown in Fig. 6, the portable emergency lighting system (1) can register a portable lighting device (100) (S100). Here, the registration step may include a step of registering an ID (identification) of the portable lighting device (100) and a unique number for each location within a specific area.

The portable emergency lighting system (1) can monitor status information of a registered portable lighting device (100) (S102). Here, the status information can include at least one of the power status, communication status, attachment/detachment status, and control status of the portable lighting device (100).

The portable emergency lighting system (1) can collect data based on status information (S104).

Thereafter, the portable emergency lighting system (1) can determine whether the emergency mode is performed or removal of the portable lighting device (100) is detected (S106).

When the performance of emergency mode or removal of the portable lighting device (100) is detected, the portable emergency lighting system (1) can monitor the location information of the portable lighting device (100) (S108).

In this monitoring step, the portable emergency lighting system (1) can determine whether the location information of the portable lighting device (100) has changed (S110). The change in location information may mean that the user has removed the portable lighting device (100) and moved it from its original location.

Thereafter, the portable emergency lighting system (1) can determine whether the changed location information is unauthorized location information (S112).

If the changed location information is unauthorized location information, the portable emergency lighting system (1) can generate an alarm and then record the first event information (S114).

Thereafter, the portable emergency lighting system (1) can notify the first event information to the terminal device (300) connected to the portable emergency lighting system (1). Various methods can be applied as a method for notifying the first event information, such as a short message service (SMS) method and an application push method.

On the other hand, in the judgment process of step (S112), if the changed location information is authorized location information, the portable emergency lighting system (1) can update the location information and record the second event information (S118).

This second event information can likewise be notified to the terminal device.

Meanwhile, after performing the above data collection step (S104), the management method of the portable emergency lighting system (1) may additionally include the following process.

A management method of a portable emergency lighting system (1) may further include a step of collecting status information, location information, and event information; a step of preprocessing the collected data collected by the collecting step to process it into history data of a portable lighting device (100); a step of inputting the history data into a learning model (252) installed in a program within the portable emergency lighting system (1); and a step of training the learning model (252) to output location information of the portable lighting device as a learning result by using the history data as input.

In addition, the management method of the portable emergency lighting system (1) may further include a step of collecting status information, location information, and event information; a step of preprocessing the collected data collected by the collecting step to process it into history data of the portable lighting device; a step of inputting the history data into a learning model installed in a program within the portable emergency lighting system; and a step of predicting the location information of the portable lighting device through the learning model by using the history data as input.

FIG. 7 is a conceptual diagram illustrating a method for detecting location information of a portable lighting device (100) in the location information monitoring process (S108) of FIG. 6.

An embodiment of the present invention is based on a location determination logic design utilizing an IoT network.

First, it is necessary to apply a three-axis measurement method, such as that in Fig. 7, to retrieve the exact location information of the person requesting rescue by utilizing positioning.

Position tracking using the 3-axis surveying method is different from triangulation, which uses the length of one side and the two angles at both ends, in that it uses two or more reference points and the distance between each reference point of an object. Position prediction is possible based on at least three received signal strength indicators (RSSI), and position measurement is possible depending on the received signal strength.

Also, there is a difference in that triangulation, which is a method of finding a location using three LoRa signals, has distance and angle, while trilateration only uses distance to find the location, and GPS can also be considered trilateration.

Figure 8 is a conceptual diagram illustrating a case in which the location information detection method of Figure 7 is actually applied.

A portable lighting device (100) can be connected to three gateways (102-1 to 102-3) by a triangulation method. Triangulation can use the signal strength transmitted from each gateway (102-1 to 102-3) to obtain an approximate distance from the current location, and determine the center point of the space where they intersect as the user's location.

At this time, the frequency band used by the portable lighting device (100) can use the unlicensed band of 920 to 923 MHz, and the received signal strength indicator (RSSI) can be collected through the gateway (102). The received signal strength (RSSI) is the received power in milliwatts, can be measured in dBm, and the measured value can be used to indicate the reception sensitivity.

In addition, the RSSI value is measured in dBm (the closer it is to 0 as a negative number, the better the reception sensitivity), and the minimum LoRa RSSI value is generally -120 dBm, and in the case of good reception sensitivity, -30 dBm, so that a method for determining depth sensitivity by distance of a portable lighting device (100) can be examined.

Meanwhile, FIG. 9 is a conceptual diagram illustrating another method of detecting location information of a portable lighting device (100) in the location information monitoring process (S108) of FIG. 6.

Figure 9 is a diagram exemplarily explaining TDOA (Time Difference of Arrival).

TOA (Time of Arrival) is a method of determining the location using triangulation when the distance between the transmitter and receiver is known, and TDOA is a method of using the difference in the arrival times of radio waves at two receivers. If two antennas are placed on one receiver and the phase of the received signal is measured, a method of measuring the distance with two receivers can be applied.

According to the embodiments of the present invention described above, the effects that can be expected when actually using a portable lighting device with IoT technology applied are that it can be used as a device that can transmit the occurrence of an emergency situation and its location to a disaster prevention room simply by pulling out the device. In a wide space such as a fire where it is difficult to search for a person in need of rescue, the location and movement route of a portable lighting device presumed to be used by a person in need of rescue can be confirmed within a building, and if this information is transmitted to rescue workers, it is expected to contribute to reducing casualties. Since a portable lighting device with IoT technology applied does not share location information such as a mobile phone, complex issues related to personal information and security can also be easily resolved. In an emergency, the location of the portable lighting device is activated, allowing the disaster prevention room or firefighters to quickly identify the location of a person in need of rescue, thereby securing the golden time, and in particular, as equipment that can protect the lives of citizens in the event of a disaster, it is possible to organically respond quickly by establishing a digitalized hotline (firefighting, police). It is expected that the present invention will create a great effect in places where tracking of rescued persons for firefighting purposes or self-location tracking is required for industrial purposes.

Meanwhile, combinations of each block of the attached block diagram and each step of the flowchart may be performed by computer program instructions. These computer program instructions may be installed in a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing equipment, so that the instructions executed through the processor of the computer or other programmable data processing equipment create a means for performing the functions described in each block of the block diagram.

Since these computer program instructions can also be stored in a computer-usable or computer-readable recording medium (or memory) that can direct a computer or other programmable data processing equipment to implement a function in a specific manner, the instructions stored in the computer-usable or computer-readable recording medium (or memory) can also produce a manufactured item that includes instruction means for performing the function described in each block of the block diagram.

And, since the computer program instructions can also be installed on a computer or other programmable data processing equipment, a series of operational steps are performed on the computer or other programmable data processing equipment to create a process that is executed by the computer, so that the instructions that execute the computer or other programmable data processing equipment can also provide steps for executing the functions described in each block of the block diagram.

Additionally, each block may represent a module, segment, or portion of code that includes at least one executable instruction for performing a specified logical function(s). It should also be noted that in some alternative embodiments, the functions mentioned in the blocks may occur out of order. For example, two blocks shown in succession may in fact be performed substantially concurrently, or the blocks may sometimes be performed in reverse order, depending on the functionality they perform.

1: Portable emergency lighting system 100: Portable lighting device
102: Gateway 110: Communications Unit (Lighting Device Side)
120: Control unit (lighting device side) 130: Power unit
140: Lighting Section 10: Network 1
200: Control device 210: Communication unit (control device side)
220: GIS Department 230: Decryption Department
240: Control unit (control device side) 250: Storage unit
252: Learning model 260: Display section
20: Second network 300: Terminal device

Claims (7)

A method for managing a portable emergency lighting system in which at least one portable lighting device is installed per zone,
A step of registering the above portable lighting device;
A step of monitoring status information of the portable lighting device being registered;
A step of collecting data based on the above status information;
A step of monitoring the location information of the portable lighting device when an emergency mode or removal of the portable lighting device is detected;
A step of generating an alarm and then recording first event information if the location information of the portable lighting device is changed and the changed location information is unauthorized location information; and
A step of notifying the first event information to a terminal device connected to the portable emergency lighting system;
If the changed location information is authorized location information, a step of updating the location information and recording the second event information; and
A step of notifying the second event information to the terminal device; further comprising:
Method of maintaining a portable emergency lighting system.
In paragraph 1,
The above-mentioned registration step includes a step of registering the ID (identification) of the portable lighting device and a unique number for each location within the area.
Method of maintaining a portable emergency lighting system.
In paragraph 1,
The above status information includes at least one of the power status, communication status, attachment/detachment status, and control status of the portable lighting device.
Method of maintaining a portable emergency lighting system.
In paragraph 1,
The above location information is encrypted location information.
Method of maintaining a portable emergency lighting system.
In paragraph 1,
The above location information is obtained using a triangular surveying method.
Method of maintaining a portable emergency lighting system.
delete In portable emergency lighting systems,
A portable lighting device, at least one of which is installed in a designated area;
At least one gateway connected to each of the portable lighting devices and transmitting status information and location information of the portable lighting devices; and
A control device that registers the portable lighting device, monitors status information of the registered portable lighting device, collects data based on the status information, monitors location information of the portable lighting device when an emergency mode or removal of the portable lighting device is detected, and records changed location information as event information when the location information of the portable lighting device is changed; and
A terminal device that receives the event information from the above control device;
A portable emergency lighting system including the terminal device updating location information if the changed location information is authorized location information, recording second event information, and receiving notification of the second event information from the control device.