KR102315707B1 - Apparatus for Work Safety of Workers within Arbitrary Space and Driving Method Thereof - Google Patents

Abstract

The present invention provides a worker safety management device in an arbitrary space and a driving method of the device. The worker safety management device in an arbitrary space according to an embodiment of the present invention includes a first scanning device and a second scanning device provided in a work space with signal reflection. A storage unit for receiving and storing a plurality of first scan signals and a plurality of second scan signals for a specified time (t) provided by the scanning device communicating with the wearing device of the worker in the work space, and (group) the stored plurality a control unit that compares the first average value calculated using the first scan signal of may include

Description

Apparatus for Work Safety of Workers within Arbitrary Space and Driving Method Thereof

The present invention is a worker safety management device in an arbitrary space and a driving method of the device, and in more detail, for example, a tunnel, underground, chimney, or brazier with signal reflection can accurately determine the location of workers working in a confined space such as a furnace. It relates to an operator safety management device in an arbitrary space and a driving method of the device.

In general, during construction or maintenance in a closed space such as a tunnel, underground, chimney or furnace, there is no device for monitoring the number of workers and the working location of the workers working therein, so the workers are exposed to risks as they are. In particular, when necessary during construction or maintenance, work such as blasting and welding is carried out, so there is a very high risk of poisoning of various harmful gases and fire. Therefore, for the safety of workers in an enclosed space, there is a need to closely monitor oxygen, carbon dioxide, methane, hydrogen sulfide, fine dust, etc. and a temperature sensor (or flame sensor).

In particular, for such monitoring, it is necessary to provide information such as an evacuation command for workers corresponding to the location in an emergency by allowing the number and location of workers to be identified. For example, the signal strength (RSSI) value of the received beacon is the Since the RSSI value is changed due to reflection by an object even when the position is fixed (eg, when it is not moving), if the scanner that is closest to the RSSI value is judged, the actual position may be different. have.

Korean Patent Publication No. 10-1054937 (2011.08.01)

An embodiment of the present invention provides a worker safety management device in an arbitrary space that can accurately determine the location of workers working in a confined space such as a tunnel, underground, chimney or furnace with signal reflection, and a method of driving the device. There is a purpose.

In the worker safety management device in an arbitrary space according to an embodiment of the present invention, the first scanning device and the second scanning device provided in the working space with signal reflection communicate with the worker's wearing device in the working space and provide a designated time A storage unit for receiving and storing a plurality of first scan signals and a plurality of second scan signals during (t), and a first average value calculated using the stored plurality of first scan signals and the stored plurality of first scan signals and a control unit that compares a second average value calculated using two scan signals and determines the position of the operator based on the first scan device when the first average value is large.

The control unit may calculate the first average value using the signal strength (RSSI) values of the plurality of first scan signals, and calculate the second average value using the signal strength values of the plurality of second scan signals. .

The control unit may use the previously stored identification information of the first scanning device to determine the position of the operator.

When the first scanning device and the second scanning device are set as a group, the control unit refers to a second average value of the second scanning device calculated after determining the position, the position of the operator in the group movement can be determined.

The storage unit may further store the job schedule information of the worker, and the control unit may determine whether the worker is abnormally working based on the determined job movement and the job schedule information.

In addition, the method of driving the worker safety management device in an arbitrary space according to an embodiment of the present invention is a method of driving the operator safety management device in an arbitrary space, including a storage unit and a control unit, which is provided in a work space with signal reflection. The first scan device and the second scan device receive a plurality of first scan signals and a plurality of second scan signals for a specified time (t) provided by communication with the wearing device of the worker in the work space, storing, and the control unit compares a first average value calculated using the stored plurality of first scan signals with a second average value calculated using the stored plurality of second scan signals to obtain the first average value. and determining the position of the operator based on the first scanning device when it is large.

The driving method may include calculating the first average value using signal strength (RSSI) values of the plurality of first scan signals, and calculating the second average value using signal strength values of the plurality of second scan signals. may further include.

In the determining of the position of the operator, identification information of the first scanning device previously stored for determining the position of the operator may be used.

In the driving method, when the first scanning device and the second scanning device are set as a group, the second average value of the second scanning device calculated after the position determination is used to determine the number of workers in the group. It may further include the step of determining the position movement.

The storage unit may further store job schedule information of the worker, and the driving method may further include determining whether the worker is abnormally working based on the determined job movement and the job schedule information.

According to an embodiment of the present invention, for example, it is possible to accurately determine the location of workers in a confined space where signal reflection occurs to determine whether the work is performed according to the work schedule, and the worker may be in danger or the work proceeds according to the schedule When it does not work, by delivering safety information or management information, it will be possible to expedite work, prevent worker accidents in advance, and perform quick responses in case of accidents.

1 is a view showing a worker safety management system according to an embodiment of the present invention;
2 is a view for explaining a group operation method of the worker safety manager device of FIG. 1;
3 is a block diagram illustrating a detailed structure of the worker safety management device of FIG. 1;
4 is a view illustrating a detailed operation of the operator position determining unit of FIG. 3, and
5 is a flowchart illustrating a driving process of an operator safety management device according to an embodiment of the present invention.

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

1 is a view showing a worker safety management system according to an embodiment of the present invention, and FIG. 2 is a view for explaining a group operation method of the worker safety manager device of FIG. 1 .

As shown in FIG. 1 , the worker safety management system 90 according to an embodiment of the present invention includes a worker wearing device 100 , a scanning device 110 , a communication network 120 , and a worker safety management device 130 . and may further include a signal relay device or on-site installation device for relaying communication between the scanning device 110 and the external communication network 120 in the work space 95 that is an enclosed space. Here, the field installation device includes a camera, a sensor, an access point, and the like.

The worker wearing device (hereinafter, the wearing device) 100 is a hard hat, safety clothes, safety shoes, waist Devices installed on belts, etc., or devices that are integrated with them, and wearable devices worn on the wrist such as Galaxy*E of domestic S company. desirable. In addition, the wearing device includes a portable terminal such as a smart phone carried separately by workers, and may include a dedicated terminal for performing an operation according to an embodiment of the present invention.

The wearing device 100 may be used while being mounted on a hard hat as shown in FIG. 1 . The wearing device 100 may include a communication device for performing beacon communication and the like, and of course, may include a short-range communication module for performing short-range communication such as Bluetooth, Wi-Fi or Zigbee. Strictly speaking, the communication device for beacon communication may be included in the short-range communication module. However, since beacon communication typically performs one-way communication, and in the case of Wi-Fi or Bluetooth, two-way communication is performed, beacon communication can be used to track the location of a worker, and in the case of two-way communication, safety information is provided to a specific operator. It can be used for transmission. Accordingly, the wearing device 100 according to an embodiment of the present invention may include a first communication module for beacon communication, that is, a beacon transmitter and a second communication module capable of bidirectional communication.

Although not shown in detail in the drawings, the wearing device 100 according to an embodiment of the present invention may include a safety information providing device capable of displaying safety information or management information transmitted from the worker safety management device 130 in various forms. may be The safety information providing device may be simply composed of an LED module. That is, to include red (R), green (G), and blue (B) LED elements, and if the current working environment of the enclosed space 95 is not good, the red LED is emitted to display the red color on the wall. . Of course, depending on the working environment, green or blue can be displayed on the wall. In this regard, the LED element is preferably an LED semiconductor element irradiating an infrared beam or the like. Of course, it may be possible to display the safety information of the designated phrase on the wall in the same way as a beam projector rather than an LED.

Above all, the wearing device 100 is an on-site installation device located in the enclosed space 95, for example, a beacon receiver (or beacon scanner) capable of receiving a beacon signal. Device (identification) information is periodically transmitted to inform the location. Of course, the device information is identification information for the wearing device 100, and the device information may mean worker information of a worker. In other words, when the workers are initially put into the enclosed space 95 for work, the worker safety management device 130 allows the operator to use user information (eg, name) through an application (hereinafter, an application) such as a smartphone. or a unique number of the wearing device, etc.) can be input as worker information to start monitoring the workers put into the closed space 95 . Therefore, it is possible to grasp the positions of the workers moving in the enclosed space 95 based on this.

In FIG. 1 , a beacon transmitter is provided in the wearing device 100 such as a hard hat to communicate with the scanning device 110 in the enclosed space 95 to determine the position of the operator, but in the embodiment of the present invention Since it is intended to track the position of the operator through the signal strength (RSSI), various signals capable of bidirectional communication in addition to the beacon signal may be used. For example, since signals such as infrared, Bluetooth, and Zigbee can also be used, the embodiment of the present invention will not be specifically limited to a beacon signal. However, for convenience of description, a beacon signal will be used.

The scanning device 110 receives, for example, a beacon signal from the worker's wearing device 100 located in the vicinity and provides it to the worker safety management device 130 via the communication network 120 . The scanning device 110 communicates with the wearing device 100 of the workers working in the working space, which is the enclosed space 95, and communicates with all the wearing devices 100 within the communication radius, more precisely, the beacon transmitter to communicate with the identification information And, it is possible to provide the signal strength value to the worker safety management device (130). In this process, the scanning device 110 may measure a signal strength value. In addition, the scan device 110 may also generate direction information on which direction the corresponding signals were received and provide it to the worker safety management device 130 , and further, calculate the distance using the signal strength value. In particular, the distance calculation may be performed in the worker safety management device 130 . Since the work safety management device 130 is expensive, it is highly probable that the performance of hardware or software resources will be excellent. Although the scan device 110 is called scan in that it periodically receives and processes signals from a plurality of beacon transmitters, the embodiment of the present invention will not specifically limit the use of such terms.

When the communication relay device is installed at the entrance of the enclosed space 95, the scanning device 110 communicates with the communication relay device and uses the communication network 120 as the worker safety management device 130 to wear the device 100. , more precisely, it is possible to transmit the identification information and signal strength value of the beacon transmitter. Therefore, since an operation such as calculating a signal strength value or measuring a distance as described above may be performed in a communication repeater, the embodiment of the present invention will not be particularly limited to any one form. For example, when the communication relay device at the entrance performs communication with the wearing device 100 in the enclosed space 95 as well, since the communication relay device is a fixed device, the position or direction for the signal of the wearing device 100 can be used as a basis for figuring out For example, the communication relay device predicts the direction of the workers, and all signals incident in the predicted direction are judged as reflected signals and excluded or may be referred to when determining the reflected signals of the wearing device 100 .

However, in the embodiment of the present invention, on the assumption that the scan device 110 receives the beacon signal of the beacon transmitter including the reflected signal, the operation will be continued below.

The communication network 120 includes both wired and wireless communication networks. For example, a wired/wireless Internet network may be used or interlocked as the communication network 120 . Here, the wired network includes an Internet network such as a cable network or a public telephone network (PSTN), and the wireless communication network includes CDMA, WCDMA, GSM, Evolved Packet Core (EPC), Long Term Evolution (LTE), Wibro network, and 5G. It is meant to include communication networks, etc. Of course, the communication network 120 according to the embodiment of the present invention is not limited thereto, and may be used as an access network of a next-generation mobile communication system, for example, a cloud computing network under a cloud computing environment, a 5G network, and the like. For example, if the communication network 120 is a wired communication network, the access point in the communication network 120 may connect to a switching center of a telephone company, etc., but in the case of a wireless communication network, it accesses the SGSN or GGSN (Gateway GPRS Support Node) operated by the communication company to transmit data. or by connecting to various repeaters such as Base Station Transmission (BTS), NodeB, and e-NodeB to process data.

The communication network 120 may include an access point. Access points include small base stations, such as femto or pico base stations, which are often installed in buildings. Of course, the access point may be a resource of a telecommunication company, but may also be a resource of a company that manages a work space. Here, the femto or pico base station is classified according to the classification of the small base station according to the maximum number of the wearable device 100 or the scanning device 110 can be connected. Of course, the access point includes a short-distance communication module for performing short-distance communication such as ZigBee and Wi-Fi with the wearing device 100 or the scanning device 110 . The access point may use TCP/IP or RTSP for wireless communication. Here, short-distance communication is performed in various standards such as Bluetooth, Zigbee, infrared (IrDA), UHF (Ultra High Frequency) and VHF (Radio Frequency) and ultra-wideband communication (UWB) in addition to Wi-Fi. can Accordingly, the access point can extract the location of the data packet, designate the best communication path for the extracted location, and forward the data packet to the next device, for example, the worker safety management device 130 along the designated communication path. The access point may share several lines in a general network environment, and includes, for example, a router, a repeater, and a repeater.

The worker safety management device 130 identifies a location for workers who work in a tunnel with signal reflection, a basement, a chimney or an enclosed space 95 in a furnace. It is possible to prevent accidents in advance by transmitting safety management information through this location identification, or to understand the work status of workers by simply monitoring the worker's work schedule.

The worker safety management device 130 stores the identification information of the wearing device 100 for the workers who work in the enclosed space 95 in the DB 130a, and matches the identification information to work every day. Information on the schedule can be stored, and the location information of the worker received in real time after the start of the job is matched to the corresponding identification information and stored, and through this, it is compared with the job schedule to check whether the worker's job is being performed according to the schedule. can also be judged.

For this operation, the worker safety management device 130 measures the signal based on the average value, considering that the work environment is a work space with signal reflection, and thereby identifies the exact location of the worker. For example, the worker safety management device 130 stores beacon information received from a plurality of scanners, that is, the scanning device 110 for a predetermined time (eg, 3500 ms) in a memory based on the scanner. Thereafter, the average signal strength value is obtained using the stored data, and the signal strength average value is arranged in descending order based on the beacon to determine the scanner with the largest value as the closest scanner. Of course, sorting in descending or ascending order may be omitted. Since the scanning device 110 in the enclosed space 95 is fixed in the space, location information (eg, coordinate values) is calculated and stored in the DB 130a when installed, so location information for the scanner having the highest value above can be determined as the location information of the operator. Of course, rather than trying to determine the exact location of the operator, it is said that the operator is simply grasping whether the work schedule is being followed, and the identification information of the scanning device 110 may be used as location information. For example, assuming that the first scanning device controls the working space of the first area and the second scanning device controls the working space of the second area, what kind of work is performed based on the scanning device having the largest average value? being able to understand what is happening.

Above all, when the operator safety management device 130 requires more accurate positioning for risk management, etc., when determining the location information of the scanning device 110 as the location of the operator, when it is greater than or equal to the reference value, the operator scans the device 110 It is not a big problem even if the position of the operator is determined as the position of the scanning device 110 by determining that it is close to , but an error may occur when there is a distance. Therefore, the worker safety management device 130 further calculates the distance based on the signal strength value, and if there is direction information, calculates new location information based on the direction information and the distance to determine the location information of the operator. In trigonometric functions, when the location information of a point is known and the distance is known, there is a formula for calculating new location information, so it can be used. It can be seen that the calculation algorithm is executed in the work safety management device 130 .

The use of the average value of the signal in the worker safety management device 130 is based on, for example, that the reflected signal is temporary. Therefore, when a large value is continuously received for a predetermined time, the average value becomes large, and therefore, if the average value is used, the possibility that the value of the signal strength of the reflected signal is temporarily excluded increases. For example, the closed space 95 is provided with a first scanning device and a second scanning device, the first scanning device and the second scanning device perform periodic communication with the worker's wearing device 100, and thus It is possible to receive a beacon signal every predetermined time. That is, a beacon signal (or a plurality of first scan signals) for a predetermined time can be received from the first scanning device for the same wearing device 100 , and a beacon signal (or a plurality of beacon signals) for a predetermined time also from the second scanning device. of the second scan signal) can be received. Beacon signals are, of course, signals of the same wearing device 100 . Therefore, after obtaining the first average value excluding the reflected signal from the first scanning device, and obtaining the second average value excluding the reflected signal from the second scanning device, comparing the average values with each other to determine the larger average value as the position of the operator . Substantially, the worker safety management device 130 may select the average value having the maximum value even by simply comparing without enumeration in descending order or ascending order.

In addition, the worker safety management device 130 can perform group-based location tracking in consideration of the fact that the location of the worker cannot be accurately measured due to an obstacle or a signal obstruction installed in the work space, that is, the closed space 95. have. Of course, group-based location tracking may be a process for facilitating monitoring. By designating a group of scanners, the group name of the closest scanner is recorded, and since a plurality of scanners are expressed as one group, the reliability of beacon location determination is higher than that of a single scanner method. In addition, it is possible to determine whether to move to a specific place by comparing the accumulated scanner information with a scenario (or pattern). In other words, when inputting the work space, the worker safety management device 130 pre-stores information about the worker's work schedule, so when the location of the worker is accurately tracked, it is determined whether the worker is performing the work according to the schedule. can be judged easily. Monitoring becomes easier. Therefore, when the work is not performed according to the schedule, the worker safety management device 130 may perform a notification to perform the work according to the work schedule with the wearing device 100 of the worker.

2 shows that the operator's position can be determined by setting groups in various forms in the worker safety management device 130 . As can be seen from (b) and (c) of Fig. 2, the method of setting the group may be various, and through this, for example, when it is difficult to determine the position through an obstacle, the position information of the surrounding scanning device 110 is When the position of the operator is set, or when the three scanning devices 110 are set as a group, the correct position of the operator can be calculated by performing triangulation based on the group.

Above all, this group setting method of determining the location of the worker can be very useful when determining whether the worker is properly performing work in a specific work space according to the work schedule.

3 is a block diagram illustrating a detailed structure of the worker safety management device of FIG. 1 .

As shown in FIG. 3 , the worker safety management device 130 according to an embodiment of the present invention includes a communication interface unit 300 , a control unit 310 , a worker position determining unit 320 , and a part of the storage unit 330 . or all inclusive.

Here, "including some or all" means that some components such as the storage unit 330 are omitted, or some components such as the operator position determining unit 320 are added to other components such as the control unit 310. As meanings that can be integrated and configured, it will be described as including all in order to help a sufficient understanding of the invention.

The communication interface unit 300 communicates with the network device constituting the communication network 120 of FIG. 1 , and through this, the beacon signal of the wearing device 100 provided by the scanning device 110 in the enclosed space 95 and Relevant device identification information and signal strength values may be received and provided to the control unit 310 . The beacon signal may be received in a period of a certain time, for example, a beacon signal is received from each scan device 110 for 3500 ms at a time point t1, and a beacon signal is transmitted to each scan device 110 for 3500 ms at a time point t2 after t1. ), the signal may be processed in the form of reception. A plurality of first scan signals and a plurality of second scan signals for a time t1 are collected, and a plurality of first scan signals and a plurality of second scan signals are collected for a time t2.

In addition, the communication interface unit 300 may transmit safety information to the wearing device 100 worn by the operator in the enclosed space 95 under the control of the control unit 310 . Although not clearly shown in FIG. 1, safety information is notified through R, G, and B LED modules provided in the wearing device 100, or safety information through various devices (eg, speakers, etc.) provided in the work space. may be notified.

The control unit 310 is responsible for the overall control operation of the communication interface unit 300, the operator position determining unit 320, and the storage unit 330 constituting the worker safety management device (130). For example, when a beacon signal of each scanning device 110 received periodically for a predetermined time at a specified time interval is provided by the communication interface unit 300, it is classified based on the device identification information of the scanning device 110, It may be stored in the storage unit 330, and based on the stored identification information of the beacon signal, the operator position determination unit 320 may be executed to calculate an average value for the signal strength.

In addition, the control unit 310 may systematically classify and store the results of the operator position determining unit 320 in the DB 130a according to the request of the worker position determining unit 320 . For example, in the DB 130a, identification information for the scan devices 110 in the work space, or when a group is set, data related to each scan device 110 may be stored for each group. In the same way as the first average value measured at a specific time t1 and another first average value measured at the time point t2 as time changes, the average values periodically measured according to time change can be stored in the DB 130a. have.

Furthermore, the control unit 310 controls the communication interface unit 300 to select specific safety information stored in the storage unit 330 according to the request of the operator position determination unit 320 and provide it to the wearing device 100 . You may. Of course, the wearing device 100 here is preferably at least one wearing device 100 selected from among the plurality of wearing devices 100 .

The operator position determining unit 320 performs an operation for determining the position of the operator in the closed space (95). For example, according to an embodiment of the present invention, the average value of the signal strength of the beacon signals received from each scan device 110 for a certain time at a specific time t1 is calculated for each scan device 110, and the calculated average value is Comparing with each other, the scanning device 110 having the largest average value is selected. Then, the location information of the scanning device 110 may be determined as the location of the operator. Here, the location information may simply be identification information of the corresponding scanning device 110 . Of course, it can be seen that this corresponds to the case where it is determined that the positions of the scanning device 110 and the operator are close to each other. In the case of simply wanting to grasp the work progress, it may be possible to identify through the stored work information by matching the identification information of the scanning device 110 .

However, the operator position determining unit 320 may measure the distance based on the signal strength, more precisely, the average value of the signal strength, for more accurate position determination. Accordingly, by reflecting the measured distance value to the position information of the scanning device 110, for example, the coordinate value, it is possible to calculate the position information of the new coordinate value and determine it as the actual position of the operator. If direction information for each beacon signal is received from the scanning device 110, it is possible to determine the exact position of the operator by further using it. The standard of direction may be judged based on the communication repeater installed at the entrance as mentioned above.

Furthermore, the operator position determining unit 320 may use the group after setting a group in the plurality of scanning devices 110 in order to accurately determine the operator's position. In the case of using the set group, the position of the operator can be calculated more accurately through triangulation, for example. Or, if the group is used to determine whether or not construction is in progress, when the operator is located in the first scanning device 110 in the group, it is determined that the work set in the first scanning device 110 is in progress, and When it is determined that the operator is located in the second scanning device 110 in the same group, it is determined that the operation set in the second scanning device 110 is in progress. Through this, it will be possible to determine whether a specific worker is performing the work according to the work schedule.

From this point of view, in the embodiment of the present invention, the scanning device 110 is simply not to know the exact current location of the worker, but rather to find out what kind of work a specific worker is doing through the closest scanning device 110 . ) can also be used. If it is necessary to determine the position of the operator more accurately, after storing the position information of the scanning device 110 in the form of coordinates, etc., the accurate position is determined through the distance and direction, and safety information is notified based on this it is preferable

The storage 330 may store various data or information processed under the control of the controller 310 . For example, the storage unit 330 stores the identification information and the signal strength value of the scanning device 110 provided by the communication interface unit 300 under the control of the control unit 310 , and then receives the request from the control unit 310 . You can print it out when you have it. The storage unit 330 may be used for temporary storage of data as described above, but since it may be used for permanent storage, it will not be particularly limited to any one form.

Meanwhile, as another embodiment of the present invention, the controller 310 of FIG. 3 may include a CPU and a memory, and the CPU and the memory may be configured as a single chip. The CPU includes a control circuit, an arithmetic unit (ALU), an instruction interpreter and a registry, and the like. It also performs operations such as converting machine language into high-level language, and the registry is involved in software data storage. The memory may include RAM. As a result of the above configuration, the CPU selectively copies the program stored in the operator position determining unit 320 of FIG. 3 when the operator safety management device 130 is initially driven or when it is determined that the operation is necessary, and is loaded into the memory. After doing this, you will be able to speed up the data operation processing speed by executing it.

FIG. 4 is a view illustrating a detailed operation of the operator position determining unit of FIG. 3 .

As can be seen in FIG. 4 , the operator position determining unit 320 of FIG. 3 may constitute a deformed operator position determining unit 320 ′ as shown in FIG. 4 . The worker position determining unit 320 of FIG. 4 includes a receiving unit 400, a first calculating unit 410, a schedule unit 420, a second calculating unit 430, and some or all of the data transmission and storage unit 440. and these components may be configured in the form of hardware (H/W), software (S/W), or a combination thereof.

Here, the first operation unit 410 , the schedule unit 420 , and the second operation unit 430 may constitute the control unit, and “including some or all” means that some components such as the receiving unit 400 are omitted. It means that it is configured or that a component such as the first operation unit 410 can be configured by being integrated with other components such as the second operation unit 430, and all are included to help a sufficient understanding of the invention. Explain.

When a beacon signal is received, the receiving unit 400 may check whether data is lost, and may provide the received data to the first calculating unit 410 . Data provided to the first operation unit 410 may be temporarily stored.

The first operation unit 410 may check the type of the received data, classify the beacon data based on the MAC address of the scanner, that is, the scanning device 110 of FIG. 1 , and store it.

The schedule unit 420 may provide data related to the operator's schedule to the second operation unit 430 , and the second operation unit 430 uses the received signal strength value of the beacon signal for each scan device 110 , or After receiving and aligning the average value, an operation for selecting the scanning device 110 having the highest average value may be performed based on the received average value.

Then, the second operation unit 430 determines which operator is located in which scan device 110 by inquiring the beacon information stored in the data transmission and storage unit 440 . Through this process, it is possible to determine whether the worker is sequentially working according to the work scenario.

If it is determined that the operation is not proceeding according to the scenario, the second operation unit 430 may notify the operator of related information.

In the embodiment of the present invention, with reference to FIG. 4 , detailed operations have been described in a broad framework, but detailed operations may be slightly different. For example, as mentioned above, a typical example is to use a group when deciding whether to proceed according to a scenario.

Since the specific operation shown in FIG. 4 can be variously changed according to the intention of the system designer, the embodiment of the present invention will not be particularly limited to any one form.

5 is a flowchart illustrating a driving process of a worker safety management device according to an embodiment of the present invention.

Referring to FIG. 5 together with FIG. 1 for convenience of explanation, in the worker safety management device 130 according to an embodiment of the present invention, the first scanning device and the second scanning device provided in the working space with signal reflection are located in the working space. It receives and stores a plurality of first scan signals and a plurality of second scan signals provided for a specified time (t) by communicating with the worker's wearing device 100 (S500). Here, the plurality of first scan signals are signals of the wearing device 100 received from the first scanning device for a predetermined time starting at a specific time point t1, and the plurality of second scan signals are constant at a specific time point t1. It represents the signal of the wearing device 100 received by the second scanning device during the time. Of course, the corresponding scan signals include reflected signals.

Next, the worker safety management device 130 compares the first average value calculated using the stored plurality of first scan signals with the second average value calculated using the plurality of second scan signals, and when the first average value is large, the first The position of the operator is determined based on the scanning device (S510). For example, if the purpose is to determine whether the worker proceeds with the work according to the work schedule, it is sufficient to simply determine the identification information of the first scanning device. In other words, since the first scanning device has jurisdiction over the working space for a specific job, the worker safety management device 130 can match the job name of the working space with the identification information of the first scanning device, and the first determined through the average value Based on the identification information of the scanning device, it is possible to determine the working status of the worker by checking the matching job name.

However, if it is necessary to accurately determine the position of the operator even within the enclosed space 95 of FIG. 1, after storing the position information of the scanning device in the form of a coordinate value, the distance is measured based on the average signal strength value and the coordinate value New location information is created based on distance and distance, and the newly created location information is identified as accurate location information of the operator. If, in the process, direction information related to the average signal strength value is received, the position of the operator can be more accurately determined.

In addition, when a group is set and utilized, the work behavior of the worker may be determined based on the group, so that it may be easier to determine the work. In other words, if the operator belongs to group A, it may be determined based on the identification information of the scanning device 110 whether the operation of A1, A2, A3 is sequentially performed. In other words, if A1 is under the jurisdiction of the first scanning device and A2 is under the jurisdiction of the second scanning device, the worker's current position is measured and the largest average value is determined as the identification information of the first scanning device, to judge that it is performing By judging the order in this way, it is possible to determine whether the work is performed according to the schedule.

Since the embodiment of the present invention assumes a tunnel, a basement, a chimney, or a furnace due to the nature of the work, it is exemplified that the identification information of the scanning device is used to determine the location of the operator, but if necessary, the exact location of the operator is determined using the location information. Judgment is also possible, so it will not be particularly limited to the above.

In addition to the above, the worker safety management device 130 of FIG. 1 may perform various operations, and since this has been sufficiently described above, the contents thereof will be replaced.

On the other hand, even though it has been described that all components constituting the embodiment of the present invention are combined or operated in combination, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all the components may operate by selectively combining one or more. In addition, although all of the components may be implemented as one independent hardware, some or all of the components are selectively combined to perform some or all functions of the combined components in one or a plurality of hardware program modules It may be implemented as a computer program having Codes and code segments constituting the computer program can be easily deduced by those skilled in the art of the present invention. Such a computer program is stored in a computer-readable non-transitory computer readable media, read and executed by the computer, thereby implementing an embodiment of the present invention.

Here, the non-transitory readable recording medium refers to a medium that stores data semi-permanently and can be read by a device, not a medium that stores data for a short moment, such as a register, cache, memory, etc. . Specifically, the above-described programs may be provided by being stored in a non-transitory readable recording medium such as a CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, and the like.

In the above, preferred embodiments of the present invention have been illustrated and described, but the present invention is not limited to the specific embodiments described above, and it is common in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims. Various modifications may be made by those having the knowledge of, of course, and these modifications should not be individually understood from the technical spirit or perspective of the present invention.

100: wearing device 110: scanning device (or scanner)
120: communication network 130: worker safety management device
300: communication interface unit 310: control unit
320, 320': operator position determination unit 330: storage unit

Claims (10)

A plurality of first scan signals and a plurality of second scan signals for a specified time (t) provided by the first scanning device and the second scanning device provided in the work space with signal reflection communicate with the worker's wearing device in the work space a storage unit for receiving and storing the scan signal; and
A first average value calculated using the plurality of stored first scan signals is compared with a second average value calculated using the plurality of stored second scan signals, and when the first average value is large, the first scanning device is used as a reference Including; a control unit for determining the position of the operator as
The control unit is
After obtaining the first average value excluding the reflected signal from the first scanning device, and obtaining the second average value excluding the reflected signal from the second scanning device, the average values are compared with each other, and the larger average value is used as the position of the operator. A worker safety management device in an arbitrary space to be identified. According to claim 1,
The control unit, before the operation of comparing the first average value calculated using the plurality of first scan signals and the second average value calculated using the plurality of second scan signals, the signal strength (RSSI) of the plurality of first scan signals ) values to calculate the first average value, and to calculate the second average value using the signal strength values of the plurality of second scan signals, the worker safety management device in an arbitrary space. 3. The method of claim 2,
The control unit, a worker safety management device in an arbitrary space using the identification information of the first scanning device pre-stored to determine the location of the worker. According to claim 1,
When the first scanning device and the second scanning device are set as a group, the controller refers to a second average value of the second scanning device calculated after determining the position based on the first scanning device. A worker safety management device in an arbitrary space that determines the movement of the location of the worker within the group. 5. The method of claim 4,
The storage unit further stores the job schedule information of the worker,
The control unit, after determining the position movement, the worker safety management device in an arbitrary space for determining whether the worker is abnormal based on the determined work movement and the work schedule information. A method of driving an operator safety management device in an arbitrary space, comprising a storage unit and a control unit,
A plurality of first scan signals and a plurality of second scan signals for a specified time (t) provided by the first scanning device and the second scanning device provided in the work space with signal reflection communicate with the worker's wearing device in the work space receiving the scan signal and storing it in the storage unit; and
The control unit compares a first average value calculated using the plurality of stored first scan signals with a second average value calculated using the stored plurality of second scan signals, and when the first average value is large, the first Including; determining the position of the operator based on the scanning device;
The determining step is
After obtaining the first average value excluding the reflected signal from the first scanning device, and obtaining the second average value excluding the reflected signal from the second scanning device, the average values are compared with each other, and the larger average value is used as the position of the operator. A method of operating a worker safety management device in an arbitrary space to be identified. 7. The method of claim 6,
Before the step of comparing the first average value calculated using the plurality of first scan signals with the second average value calculated using the plurality of second scan signals, the signal strength (RSSI) values of the plurality of first scan signals Calculating the first average value using the and calculating the second average value using the signal strength values of the plurality of second scan signals; Driving method of a worker safety management device in an arbitrary space further comprising. 8. The method of claim 7,
The step of determining the position of the worker,
A method of driving a worker safety management device in an arbitrary space using the identification information of the first scanning device pre-stored for determining the location of the worker. 7. The method of claim 6,
When the first scanning device and the second scanning device are set as a group, the second average value of the second scanning device calculated after determining the position based on the first scanning device is referred to within the group. Determining the movement of the position of the worker; Driving method of a worker safety management device in an arbitrary space further comprising a. 10. The method of claim 9,
The storage unit further stores the job schedule information of the worker,
After determining the position movement, determining whether the worker is abnormally working on the basis of the determined work movement and the work schedule information; driving method of a worker safety management device in an arbitrary space further comprising a.

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