KR20230152911A - Abnormal situation transmission process using mesh network - Google Patents

Abstract

The present invention relates to a method of transmitting an abnormal situation using a mesh network. More specifically, it relates to an emergency situation using a mesh network that determines the location of a worker and notifies the worker of an emergency situation or notifies the outside of an emergency situation occurring to the worker. It's about the transmission method.
To this end, the method of monitoring a worker who encounters an emergency situation in the workplace using the mesh network of the present invention includes the steps of: a mobile terminal providing biometric information collected from the worker to a repeater; The repeater providing biometric information provided from the mobile terminal to the hub; and determining whether the worker has an abnormality based on the biometric information provided by the hub.

Description

Abnormal situation transmission process using mesh network}

The present invention relates to an abnormal situation transmission process using a mesh network, and more specifically, to an emergency situation using a mesh network that identifies the worker's location and notifies the worker of an emergency situation or externally reports an emergency situation occurring to the worker. It's about the transfer process.

In areas where mobile communication is not available within construction sites, it is required to build smart safety equipment that allows workers to safely evacuate using real-time monitoring and wireless alarm devices through IoT detection. According to the Ministry of Land, Infrastructure and Transport guidelines, smart safety equipment is required at construction sites worth KRW 300 billion or more. The introduction of safety equipment is mandatory.

In 2018, the number of casualties due to occupational accidents in the construction industry was 26,486, of which the number of deaths due to occupational accidents in the construction industry was 485, accounting for approximately 50% of the total number of deaths of 971. In other words, 1.3 workers lose their lives every day due to accidents during construction work each year. In order to reduce accidents at construction sites, we expect to reduce the accident rate at construction sites by implementing cutting-edge technologies of the 4th industrial revolution, such as digitalization of the entire construction cycle, automation of construction equipment, virtual construction, and smart safety management, etc. for companies and government agencies.

Smart construction safety management combines IoT technology with objects, providing real-time information on which workers are working in which positions at the construction site and whether there are any risk factors around the workplace, thereby securing golden time in the event of an accident to prevent casualties. It can be reduced as much as possible. For this to happen, the following situations are required:

○ Determine the location of workers

The Internet of Things becomes a location register that can be attached and detached to various protective gear such as helmets, bands, and safety rings worn by workers, and is recognized every time it passes through numerous scanners at the construction site, reporting the real-time location to the site manager through tablets and PCs. Field personnel can know the location of workers and the type of work in real time even from outside, preventing confusion on site.

○ Cognitive skills

It is impossible for a small number of safety managers to understand all situations that occur at a construction site, but artificial intelligence can recognize objects or situations seen through surveillance cameras and respond accordingly. In addition, the status of hazardous substances within the site can be monitored in real time and the safety manager can be made aware of the situation using the application's contact network. When a large-scale accident such as a fire occurs, we are establishing a system to recognize the situation and respond quickly using an emergency communication network with related organizations.

○ Alarm sound

The smart safety ring is a device for safety control of workers at heights and is equipped with the functions of detecting the worker's location and altitude, detecting the fastening of the safety ring, and providing a warning notification when the safety ring is not fastened. Through this, safety awareness is continuously raised so that workers can perform safe work on their own. In addition, in the case of equipment that has a risk of contact accidents, such as forklifts, an equipment access warning system is installed to sound a warning sound and prevent collisions between people and equipment.

In the existing wired network environment, all APs are connected by wires by connecting signals through a repeater or wireless router called an access point (AP). However, in a mesh network, if only the representative AP is connected by wire, wireless communication routers that act as antennas like existing wireless communication base stations become mesh nodes and connect all sections wirelessly. It is a technology that allows the wired network mesh-type network structure to be implemented in the same structure in the wireless network, and was introduced to overcome the limitations of the existing wireless LAN.

For example, the hotspot zone established by telecommunication companies has been expanded to a wider area. While a hotspot zone allows anyone in a building to use a wireless communication network by connecting to Wi-Fi, a mesh network can be said to be a technology for building a wireless network the size of a wider resort, large park, or port. By building a mesh network, users can use the network in a similar process to connecting to Wi-Fi. This is attracting attention as an essential technology in the ubiquitous era, which has been mentioned for several years as it has strengths in not only network connection in disaster situations or remote areas where it is difficult to establish a wired network, but also home networking.

Korean Patent No. 10-2108368 (Title of invention: Smart management system capable of monitoring workplace environment and worker safety) Korean Patent No. 10-2095986 (Title of invention: Early fire detection and safe evacuation guidance system and method)

The problem that the present invention seeks to solve is to propose a method for quickly notifying workers of emergency situations occurring in the workplace.

Another problem that the present invention seeks to solve is to propose a method of determining the location of a worker in a workplace in real time.

Another problem that the present invention seeks to solve is to propose a method of notifying the outside world of emergency situations occurring to workers.

Another problem that the present invention aims to solve is to propose a mesh communication network that can be applied to a work environment where a mobile communication network including LTE is not established.

Another problem that the present invention aims to solve is to propose a method of providing related information to the hub even when the repeater is broken.

To this end, the method of monitoring a worker who encounters an emergency situation in the workplace using the mesh network of the present invention includes the steps of: a mobile terminal providing biometric information collected from the worker to a repeater; The repeater providing biometric information provided from the mobile terminal to the hub; and determining whether the worker has an abnormality based on the biometric information provided by the hub.

The abnormal situation transmission method using a mesh network according to the present invention has the effect of quickly notifying workers of emergency situations occurring within the workplace, and has the advantage of being particularly applicable in a work environment where a mobile communication network including LTE is not established. There is.

In addition, the present invention can establish a customized warning notification process by determining the location of workers in the workplace in real time and providing warning signals to the workers when an emergency situation occurs, and can quickly report emergency situations occurring to workers to an external server or other device. There are many advantages that can be provided.

Figure 1 shows an emergency warning system using a mesh network according to an embodiment of the present invention.
Figure 2 is a diagram showing the configuration of a repeater according to an embodiment of the present invention.
Figure 3 is a diagram showing the configuration of a hub according to an embodiment of the present invention.
Figure 4 shows a process for transmitting an emergency situation occurring to a worker to the outside using a mesh network according to an embodiment of the present invention.
Figure 5 shows a process performed in a hub according to an embodiment of the present invention.

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

Figure 1 shows an emergency warning system using a mesh network according to an embodiment of the present invention. Hereinafter, we will look at the emergency situation warning system using a mesh network according to an embodiment of the present invention in detail using Figure 1.

According to FIG. 1, the emergency warning system 100 using a mesh network includes a plurality of repeaters 120, a hub 130, and a mobile terminal 110. Of course, other configurations other than those described above may be included in the emergency warning system using a mesh network proposed in the present invention.

The mobile terminal 110 communicates with the repeater 120. The mobile terminal 110 includes a Bluetooth module therein and receives a beacon signal containing the identifier of the repeater from the repeater 120. The mobile terminal 110 transmits a first signal containing identification information of the mobile terminal to the repeater 120 in response to the received beacon signal. Of course, the mobile terminal 110 does not transmit the first signal to any one repeater, but transmits the first signal so that at least one repeater can receive the first signal.

The repeater 120 includes a beacon module and a mesh module. The beacon module and mesh module perform Bluetooth communication. The beacon module transmits a beacon signal containing the identifier of the repeater. The mesh module receives a second signal containing identification information of the mobile terminal from the mobile terminal 110.

In relation to the present invention, the repeater 120 uses two Bluetooth modules rather than one Bluetooth module. When transmitting and receiving a beacon signal and a first signal using a single Bluetooth module in a repeater, the signal strength is weakened, the network range is narrowed, and the error rate increases. In order to solve this problem, the present invention proposes a method of separately applying the beacon module that transmits the beacon signal and the mesh module that receives the first signal.

To this end, the beacon module transmits a beacon signal using a first antenna, and the mesh module receives the first signal using a second antenna.

The repeater 120 includes a sensor that detects harmful gases and a connection terminal capable of connecting other external devices.

The repeater 120 transmits the received first signal to a set adjacent repeater. Additionally, the repeater 120 transmits harmful gas information, which is information about the harmful gas detected by the sensor, to an adjacent repeater.

In relation to the present invention, a plurality of repeaters form a mesh network. For this purpose, the repeater stores information about an adjacent repeater that will transmit a second signal corresponding to the received first signal or a second signal containing harmful gas information. The repeater transmits the second signal to the stored adjacent repeater. Of course, the repeater transmits the second signal using the mesh module and the second antenna. As described above, the second signal is divided into a second signal corresponding to the first signal, a second signal containing harmful gas information, etc.

The repeater 120 transmits a third signal requesting to transmit a warning sound to the mobile terminal. That is, when the repeater 120 is requested to transmit a warning sound from the hub 130 (or an adjacent repeater) to the mobile terminal 110 located in a specific area in the workplace, the repeater 120 confirms the location of the mobile terminal and then transmits a third signal. . The repeater 120 transmits a fourth signal corresponding to the third signal to the mobile terminal 110. That is, when the mobile terminal 110 requested to transmit a warning sound is located within the communication range of the repeater, the repeater 120 transmits the fourth signal to the corresponding mobile terminal 110, and the mobile terminal 110 transmits the fourth signal to the repeater's communication range. If it is not located within the range, the fourth signal corresponding to the received third signal is transmitted to an adjacent repeater.

The hub 130 is connected to the repeater 120 and receives a second signal from the repeater 120. The hub 130 matches and stores the location where the repeater 120 is installed and the identifier of the repeater. When it is necessary to transmit a warning signal to a specific area in the workplace, the hub 130 transmits a third signal to a repeater installed in the area. The hub 130 analyzes various information and determines whether to transmit a warning signal. That is, the hub 130 determines whether to transmit the third signal by analyzing harmful gas information, information provided from an external server, or information provided from an administrator terminal. The hub 130 provides information provided from the repeater to an external server. Below, we will look at each component that constitutes the emergency warning system proposed in the present invention.

In relation to the present invention, the mobile terminal 110 includes a biometric information measurement module that measures the worker's biometric information. The biometric information measurement module measures information related to the worker, such as the worker's pulse, blood pressure, blood oxygen saturation, movement speed, or body temperature. Of course, it is obvious that the biometric information measurement module may include other biometric information in addition to the biometric information described above.

As described above, the mobile terminal 110 may include a biometric information measurement module, or the biometric information measurement module may be configured separately from the mobile terminal 110. When the biometric information measurement module is configured separately, the biometric information measurement module includes a communication module and can communicate with a mobile terminal or a repeater.

The biometric information measurement module is a wearable type that can be worn on the worker's body, such as the user's wrist, head, or ankle, and measures the worker's biometric information. The biometric information measurement module may include a camera that captures not only the worker's biometric information but also the surrounding environment. The camera captures images at set time intervals or when an event is input from the outside.

The biometric information measurement module may include an acceleration sensor, a gravity sensor, etc., and can detect emergency situations such as a worker's fall by measuring acceleration or gravity. In addition, the biometric information measurement module is equipped with various modules or sensors, and collects information using the mounted modules or sensors.

As described above, the biometric information measurement module can be implemented in the form of a wearable device, and the wearable device can be implemented in various forms such as a watch, hard hat, work clothes, and work boots, and can be linked to a mobile terminal.

The mobile terminal 110 transmits the measured biometric information of the worker to the hub 130 via the repeater 120 using the mesh network described above. The hub 130 stores the worker's biometric information transmitted from the mobile terminal 110, and also analyzes the worker's biometric information to determine the worker's current status. That is, the hub 130 analyzes the worker's biometric information and determines whether the worker is in an emergency situation.

If the hub 130 determines that an emergency situation has occurred to a worker, it notifies this to an external server or transmits information about this to the mobile terminal of a worker adjacent to the worker in an emergency situation to quickly rescue the worker.

To this end, the hub 130 determines in real time the location of the mobile terminal 110 possessed by a worker located in the workplace. That is, when the mobile terminal 110 transmits biometric information to the repeater 120, the location information of the mobile terminal 110 is also transmitted.

Figure 2 is a diagram showing the configuration of a repeater according to an embodiment of the present invention. Hereinafter, the configuration of another repeater according to an embodiment of the present invention will be described in detail using FIG. 2.

According to Figure 2, the repeater 120 includes a beacon module (120a), a mesh module (120b), a gas detection sensor (120c), a control module (120d), a first antenna (120e), a second antenna (120f), and a constant Includes a power module (120g), battery (120h), alarm module (120i), and connection terminal (120j). Of course, other configurations other than those described above may be included in the repeater proposed in the present invention.

The present invention proposes a method of managing the workplace environment using Bluetooth, which can be used even in areas where mobile communication services such as LTE are not available. Bluetooth has the advantage of ensuring user convenience as it can be used without separate operation because automatic pairing is possible.

The beacon module 120a transmits a beacon signal including an identifier to the outside according to the control command of the control module. Of course, the beacon module 120a transmits a beacon signal using the first antenna 120e. In relation to the present invention, the beacon module 120a transmits a beacon signal to the outside at regular time intervals or at a set point in time.

The mesh module 120b receives a first signal containing identification information of the mobile terminal from the mobile terminal. A second signal is transmitted to an adjacent repeater using the mesh module 120b. The mesh module 120b receives a warning signal from an adjacent repeater or hub. In addition, the mesh module 120b transmits or receives various information. Of course, the mesh module 120b also receives or transmits necessary signals using the second antenna 120f.

The first antenna 120e is connected to the beacon module 120a and transmits a beacon signal to the outside.

The second antenna 120f is connected to the mesh module 120b and receives a first signal from the outside or transmits a second signal to the outside.

In relation to the present invention, when using two Bluetooth modules, there is a risk of confusion occurring due to the same frequency band, so antennas are applied to each beacon module and mesh module, and in particular, the signal strength of each is varied to prevent confusion. . In the case of the first antenna, the transmission power level is set high to minimize the shaded area between each beacon.

To elaborate, the beacon module 120a must transmit a beacon signal to an unspecified number of mobile terminals, so the signal must be transmitted over a long distance, and the mesh module 120b must form a network with surrounding equipment. Therefore, when the beacon module 120a and the mesh module 120b are implemented as one, there is a disadvantage that the distance and intensity of Bluetooth are reduced.

The gas detection sensor 120c detects harmful gases in the workplace. The gas detection sensor 120c transmits information about the detected harmful gas to the outside according to a control command from the control module 120d.

The constant power module (120g) receives power from the outside. The constant power module (120g) supplies the received power to operate each component. The battery 120h supplies power to each configuration when the power supply from the constant power module 120g is cut off. That is, the battery 120h supplies power so that the repeater can operate in an emergency.

The alarm module 120i outputs a warning sound or a warning message to the outside according to the control command of the control module. Warning messages can be implemented in various forms. Warning messages are output using LED lamps, electronic signs, etc.

The connection terminal 120j is a terminal that allows an external device to be connected. External devices may include equipment that can detect danger or CCTV cameras.

The control module 120d controls the operation of each component that constitutes the repeater. The control module 120d controls the beacon module 120a to transmit a beacon signal including an identifier to the outside. The control module 120d controls to receive the first signal transmitted by the mobile terminal using the mesh module 120b, and also controls to receive the third signal transmitted by the hub or adjacent repeater. The control module 120d controls the second signal received from the mobile terminal to be transmitted to the hub or a set repeater. In relation to the present invention, the control module 120d sets information about the hub or repeater to transmit the second signal in advance, and transmits it by including information about the receiving device so that the set hub or repeater can receive the signal. . Of course, the control module 120d transmits harmful gas information to an adjacent repeater or hub in addition to the above-described signals.

When a warning sound or message is required to be output externally, the control module 120d outputs a warning sound or a warning message using a warning module. For this purpose, the control module 120d checks the identifier of the area or repeater included in the third signal, and if the current location is included in the area included in the warning signal or the identifier of the repeater is included in the third signal, it is sent to the outside. Outputs a warning sound or warning message.

If there is a currently paired mobile terminal, the control module 120d transmits a fourth signal to the corresponding mobile terminal. In addition, when the received third signal includes identification information of the mobile terminal, the control module 120d transmits a fourth signal to the mobile terminal.

In this way, the third signal may include identification information of the mobile terminal that will receive the fourth signal corresponding to the third signal, or may include the identifier of the repeater that will output the warning sound or warning message. Of course, if its identifier is included in the identifier of the repeater that will output the warning sound or warning message, the repeater transmits the fourth signal to the paired mobile terminal.

Figure 3 is a diagram showing the configuration of a hub according to an embodiment of the present invention. Hereinafter, the configuration of the hub according to an embodiment of the present invention will be described in detail using FIG. 3.

According to FIG. 3, the hub 130 includes a control module 130a, a battery 130b, a constant power module 130c, a mesh module 130d, and a communication module 130e. Of course, other configurations other than those described above may be included in the hub proposed in the present invention.

The battery 130b supplies power to each component constituting the hub when the constant power supply from the outside is cut off.

The constant power module 130c normally supplies power to each component that constitutes the hub.

The mesh module 130d receives the second signal from the repeater. Of course, in addition to the above-mentioned signals, various other signals can be received from the repeater. The mesh module 130d transmits the third signal to the repeater.

The communication module 130e is connected to an external server and transmits related information to the external server. The communication module 130e receives necessary information from an external server. The communication module 130e can receive information about an emergency situation from an external server. In this way, the communication module 130e transmits or receives various information.

The control module 130a controls the operation of each component that constitutes the hub. The control module 130a determines whether transmission of a third signal is required using the signal or information received from the repeater. The control module 130a transmits the third signal to the repeater when it meets a situation requiring transmission of a third signal, including when harmful gas is detected in the workplace.

In this way, the present invention proposes a method of determining the location of workers in the workplace and notifying workers of risk warnings.

The mobile terminal proposed in the present invention has a dangerous situation warning application installed, and the installed application is automatically run when entering the workplace. To explain further, the dangerous situation warning application is automatically launched when a GPS signal is not received from the mobile terminal. Of course, the dangerous situation warning application can be operated by user operation.

In addition, when a beacon signal is received from a beacon module while the mobile terminal is not receiving GPS, the installed application is run and necessary operations are performed by the run application.

The mobile terminal running the dangerous situation warning application attempts to communicate with the repeater, and when communication with the repeater is connected, it receives a beacon signal from the beacon module. In addition, the mobile terminal outputs a warning sound or warning message to the outside according to the fourth signal received from the repeater. For this purpose, the mobile terminal transmits its identification information to the repeater, and the repeater or hub determines the location of the mobile terminal in real time. Since the location of the mobile terminal is known in real time, the hub can identify the mobile terminal located in the risk area.

The repeater that receives the first signal transmitted from the mobile terminal checks the identifier of the beacon module included in the first signal. The repeater discards the received first signal if the identifier of the beacon module included in the first signal is not the identifier of the beacon module constituting the repeater, and the identifier of the beacon module included in the first signal is the beacon module constituting the repeater. In the case of a module identifier, a second signal corresponding to the received first signal is transmitted to an adjacent repeater constituting a hub or mesh network. In this way, if the identifier of the beacon module included in the first signal is not the identifier of the beacon module constituting the repeater, transmission and reception of a plurality of second signals can be blocked by discarding the received first signal.

In relation to the present invention, a repeater that constitutes a mesh network ensures that beacon signals transmitted from two beacon modules are received at a specific point. By doing this, if one beacon module fails, the mobile terminal can receive a beacon signal transmitted from another beacon module. Additionally, the control module constituting the repeater monitors whether the beacon module or mesh module has a failure. If a failure occurs in the beacon module or mesh module, the repeater reports this to the hub.

The control module of the repeater determines whether the beacon module and mesh module have a failure at regular intervals, and provides information about the failure to the hub if a failure occurs in the beacon module or mesh module. In this case, if a failure occurs in the beacon module, the mesh module can be used to provide information as to whether the beacon module has failed. In contrast, if a failure occurs in the mesh module, the hub cannot provide information as to whether the mesh module has failed. Therefore, a solution for this is required.

For this purpose, the repeater provides the hub with information on the failure of the beacon module and the mesh module at regular intervals. If the hub does not receive information on the failure of the beacon module and the mesh module at regular intervals, it reports the failure in the mesh module of the corresponding repeater. It can be judged that it has occurred. However, this method has a problem in that unnecessary signals are transmitted and received. The present invention proposes a solution for this.

As described above, the mobile terminal receives beacon signals from two beacon modules. The mobile terminal transmits a first signal containing the identifier of the repeater included in the received beacon module and the identification information of the mobile terminal. The first signal transmitted by the mobile terminal is transmitted by at least one repeater, and the repeater that has received the first signal transmits a second signal corresponding to the first signal to the hub via a mesh network.

Since the mobile terminal receives two beacon signals, the number of first signals transmitted by the mobile terminal is two. As an example, assume that a mobile terminal receives a beacon signal from a beacon module of a first repeater and a beacon signal from a beacon module of a second repeater. The mobile terminal transmits a first signal containing the identifier of the first repeater and the identification information of the mobile terminal, and a first signal containing the identifier of the second repeater and the identification information of the mobile terminal. The hub must receive a second signal containing the identifier of the first repeater and the identification information of the mobile terminal, and a second signal containing the identifier of the second repeater and the identification information of the mobile terminal. However, if the hub receives only one second signal, the hub may determine that a failure has occurred in a repeater (or a repeater within a set radius) adjacent to the repeater with the identifier of the repeater included in the second signal. Of course, the hub cannot specify the failed repeater, but it can block the transmission and reception of unnecessary signals.

In addition, when at least two first signals are received, the repeater transmits to the outside a second signal corresponding to the first signal with a relatively large received signal strength, and discards the first signal with a relatively small received signal strength. .

When a signal is transmitted to a hub via a mesh network, when the signal is in the order of repeater 1, repeater 2, repeater 3, repeater 4, and hub on the mesh network, the signal transmitted by repeater 1 is transmitted to the hub due to a failure of repeater 2 or repeater 3. It may not be transmitted.

In order to solve this problem, the present invention sets up at least two repeaters to receive and transmit one signal. Therefore, even if one repeater fails to transmit a signal due to a failure, the signal can be transmitted to the hub using another repeater.

In addition, the present invention can transmit signals to the hub in another way even when one repeater is broken. As an example, assume that repeater 2 is broken. In relation to the present invention, the signal transmitted by repeater 1 is received by repeater 2, and repeater 2 transmits a response signal to repeater 1. Through this process, repeater 1 confirms that the signal it transmitted was properly received by repeater 2. However, if repeater 2 is broken as described above, repeater 2 will not be able to transmit a response signal. Therefore, in order to solve this problem, repeater 1 of the present invention stores identification information of repeater 3 through which repeater 2 transmits signals. If repeater 1 does not receive a response signal from repeater 2, it transmits a signal to repeater 3.

The distance between repeater 1 and repeater 3 is relatively farther than the distance between repeater 1 and repeater 2. Therefore, repeater 1 transmits a signal with a relatively higher transmission power than the transmission power when transmitting a signal to repeater 2. For this purpose, repeater 1 stores the amount of transmission power required when transmitting a signal to repeater 3, and when transmitting a signal to repeater 3, the signal is transmitted using the stored transmission power. In particular, repeater 1 includes the amount of transmission power in the signal transmitted to repeater 3, and repeater 3 checks the amount of transmission power included in the received signal and transmits a response signal to repeater 1. Of course, repeater 1 repeatedly transmits signals (A+a, A+2a, A+3a...) with different transmission power sizes in advance, so that the size of the transmission power of the signal transmitted to repeater 3 can be confirmed. do.

In addition, when repair is completed, repeater 2 receives the signal that repeater 1 transmits to repeater 3, and repeater 2 learns that the destination of the signal is repeater 3, and repeater 3 is the destination of the signal it transmits. . Therefore, since repeater 2 has completed repair of its own fault, it requests repeater 1 to transmit a signal with repeater 2 as the destination. Afterwards, repeater 1 transmits the signal to repeater 2 instead of repeater 3.

Figure 4 is a flowchart showing a process for measuring biometric information of a worker and transmitting it to the hub according to an embodiment of the present invention. Hereinafter, the process of transmitting a worker's biometric information to the hub according to an embodiment of the present invention will be described in detail using FIG. 4.

In step S400, the mobile terminal is worn by the worker, and the worker's biometric information is collected while worn. As described above, the worker's biometric information includes pulse, blood pressure, blood oxygen saturation, worker's movement speed, or body temperature.

In step S402, the mobile terminal provides the collected biometric information of the worker to the repeater along with the mobile terminal's identification information.

In step S404, the repeater provides the worker's biometric information including the identification information of the mobile terminal received from the mobile terminal to the hub. The repeater provides the worker's biometric information and, if necessary, the repeater's identifier.

In step S406, the hub stores the worker's biometric information provided by the repeater, and at the same time analyzes the worker's biometric information to determine whether the worker is in an emergency situation.

In this way, the present invention provides the worker's biometric information collected from the mobile terminal to the hub, and the hub analyzes the worker's biometric information to determine whether the worker is in an emergency situation. Workers' biometric information can be collected using various devices. In other words, the worker's biometric information can be collected using one device, or the worker's biometric information can be collected using at least two devices. Additionally, the cycle of collecting biometric information may vary depending on the administrator's settings, and it is desirable to collect biometric information at different times.

Figure 5 shows a process performed in a hub according to an embodiment of the present invention. Hereinafter, we will look in detail at the operations performed in the hub according to an embodiment of the present invention using FIG. 5.

In step S500, the hub analyzes the worker's biometric information and determines that an emergency situation has occurred. For example, if the worker does not move or the worker's pulse is irregular, it is determined that an emergency situation has occurred to the worker. In addition, it is possible to determine whether a worker is in an emergency situation according to various set criteria.

In step S502, the hub analyzes the type and emergency level of the emergency situation that occurred to the worker. Depending on the emergency situation level, the hub continuously monitors the worker's condition or quickly notifies the worker externally that an emergency situation has occurred.

In step S504, the hub notifies the worker to the external server that an emergency situation has occurred. In this case, the hub also provides location information of workers in emergency situations.

In step S506, the hub notifies a specific worker that an emergency situation has occurred through a repeater installed in the area where the worker (mobile terminal) where the emergency situation occurs is located.

In step S508, the repeater notifies a mobile terminal capable of communication that there is a worker in an emergency situation in the area. In other words, the repeater notifies the mobile terminal in the area that there is an emergency worker through a warning sound or other means.

The present invention is described as collecting a worker's biometric information from a mobile terminal, but is not limited to this. In other words, the worker's biometric information is collected by the biometric information collection terminal worn by the worker, and the biometric information collection terminal can transmit the collected worker's biometric information to the mobile terminal.

Additionally, as described above, the hub determines the location of the mobile terminal in real time using the identifier or identification information included in the beacon signal, first signal, and second signal.

The present invention has been described with reference to an embodiment shown in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and other equivalent embodiments are possible therefrom. .

100: Emergency warning system 110: Mobile terminal
120: repeater 130: hub
140: mesh network 120a: beacon module
120b: Mesh module 120c: Gas detection sensor
120d: Control module 120e: First antenna
120f: 2nd antenna 120g: constant power module
120h: Battery 120i: Alarm module
120j: Connection terminal 130a: Control module
130b: Battery 130c: Constant power module
130d: mesh module 130e: communication module

Claims (6)

In a method of monitoring workers who encounter an emergency situation in the workplace using a mesh network,
A mobile terminal providing biometric information collected from a worker to a repeater;
The repeater providing biometric information provided from the mobile terminal to the hub; and
A worker monitoring method using a mesh network, comprising: determining whether there is an abnormality in the worker based on biometric information provided by the hub.
According to clause 1,
The mobile terminal provides biometric information including identification information of the mobile terminal to the repeater,
The repeater provides biometric information including the identifier of the mobile terminal and the identifier of the repeater to the hub,
A worker monitoring method using a mesh network, wherein the hub calculates the location of the mobile terminal from the provided information.
According to clause 2,
The mobile terminal transmits a first signal containing identification information in response to the received beacon signal,
The repeater transmits a beacon signal containing an identifier to the mobile terminal to the outside using a beacon module, and receives the first signal containing the identifier and identification information transmitted by the mobile terminal using a mesh module. Generates a second signal that corresponds to the first signal and includes destination information and transmits it to the outside using the mesh module,
The hub receives the second signal transmitted by the repeater, analyzes the identifier and identification information included in the received second signal, determines the location of the mobile terminal, and detects the location of the mobile terminal when transmission of a warning signal to the mobile terminal is requested. 3 A worker monitoring method using a mesh network, characterized in that a signal is generated and transmitted to the repeater.
The method of claim 3, wherein the repeater,
a first antenna transmitting the beacon signal; and
A worker monitoring method using a mesh network, comprising a second antenna that receives the first signal and transmits the second signal.
The method of claim 4, wherein the mobile terminal receives beacon signals from two different beacon modules, and generates two first signals with different identifiers in response to the received beacon signals and transmits them to the outside. Worker monitoring method using a mesh network.
The method of claim 5, wherein the hub,
Determine whether two second signals containing different identifiers are received,
When a second signal is received, worker monitoring using a mesh network is characterized in that it is determined that a failure has occurred in any one of the repeaters located within a set radius from the repeater with the identifier included in the received second signal. method.