KR20200113512A - Apparatus for Managing Safety by Monitoring Divisional Region of Construction Site and Driving Method Thereof - Google Patents

Abstract

The present invention relates to a safety management device for monitoring segmented areas of a construction site and a driving method thereof. According to an embodiment of the present invention, the safety management device for monitoring segmented areas of a construction site can comprise: a storage part that stores location information for a first scanner and a second scanner installed in one side of a construction site at predetermined intervals in an arbitrary construction site; and a control part that receives each signal detection result of a signal transmission device provided by a worker in the construction site from the first scanner and the second scanner, and determines the location of the worker based on the received signal detection result and the stored location information.

Description

A safety management device for monitoring divisional regions of a construction site and its driving method {Apparatus for Managing Safety by Monitoring Divisional Region of Construction Site and Driving Method Thereof}

The present invention relates to a safety management device for monitoring divided areas of a construction site and a driving method of the device, and more particularly, in a construction site such as a tunnel, the position of a worker or construction equipment in each section of a tunnel is disturbed by radio waves. It relates to a safety management device for monitoring divided areas of a construction site to be accurately determined by excluding and a method of operating the device.

In general, in construction, civil engineering, and plant sites, the safety of each worker is the top priority. However, until now, most of these workers' personal safety is pre-trained, and when they are put into the actual work site, it is common for each individual to take charge of safety on their own. In recent years, due to the development of smart devices and wearable devices, some systems have been proposed that allow the location or body information of workers to be checked in the central control server.

However, as a result of applying such a conventional system at the actual construction site, it is not possible to accurately receive information from the operator terminal due to radio interference caused by the special environment and equipment at various construction sites, for example, a worker in area A is displayed in area G. There are a lot of occurrences.

Korean Patent Application Publication No. 10-2017-0006095 (2017.01.17.) Korean Registered Patent Publication No. 10-1671209 (2016.10.26.)

An embodiment of the present invention is a safety management device for monitoring divided areas of a construction site and driving the device to accurately determine the location of workers or construction equipment in each section of a tunnel in a construction site such as a tunnel by excluding radio interference, etc. Its purpose is to provide a method.

The safety management device for monitoring a divided area of a construction site according to an embodiment of the present invention includes a location for a first scanner and a second scanner installed at one side of the construction site at intervals at each specified distance at a construction site in an arbitrary space. A storage unit for storing information, and receiving each signal detection result for a signal transmission device (or beacon device) provided by a worker at the construction site from the first scanner and the second scanner, and detects the received signal And a control unit that determines the location of the worker based on the result and the stored location information.

The control unit calculates a first distance and a second distance, respectively, based on a first signal detection result provided by the first scanner and a second signal detection result provided by the second scanner, and the calculated first distance And applying the second distance to the location information to determine the location of the worker.

The control unit may calculate the first distance and the second distance using the reception strength of the beacon signal as a result of the signal detection, and determine the position of the worker using coordinate information as the position information.

The storage unit further stores location information on a fixed communication device installed facing the first scanner and the second scanner on the other side of the construction site, and the control unit further includes the stored fixed communication device when determining the location of the worker. The location information of the communication device can be further used.

The control unit includes the first distance and the first distance and the fourth distance based on a third distance and a fourth distance calculated using signal strength for each beacon signal of the fixed communication device respectively received by the first scanner and the second scanner. It is possible to determine the location of the worker by the second distance.

The control unit may determine the position of the worker by the first distance and the second distance based on a fifth distance calculated using the signal strength of the signal transmission device received from the third scanner as the fixed communication device. I can.

The storage unit further stores location information for a fourth scanner installed next to the second scanner at one side of the construction site, and the control unit determines the signal strength of the signal transmission device provided from the fourth scanner. Based on the calculated sixth distance, the position of the worker based on the first distance and the second distance may be determined.

The control unit includes a maximum value (Max), a minimum value (Min) of signal strength for the beacon signal of the fixed communication device received by the first scanner and the second scanner, respectively, and an average value obtained by averaging the maximum value and the minimum value. By using at least one value of (Avg.), radio wave interference in the communication jurisdiction of the first scanner and the second scanner may be determined to determine the location of the worker.

In addition, the driving method of the safety management device for monitoring the divided area of the construction site according to the embodiment of the present invention is a driving method of the safety management device for monitoring the divided area of the construction site including a storage unit and a control unit. Storing location information for the first scanner and the second scanner installed on one side of the construction site at intervals at each specified distance in the storage unit, and the control unit, the first scanner and the first scanner 2 Including the step of receiving each signal detection result of the signal transmission device provided by the worker at the construction site from the scanner, and determining the location of the worker based on the received signal detection result and the stored location information do.

The determining may include calculating a first distance and a second distance, respectively, based on a first signal detection result provided by the first scanner and a second signal detection result provided by the second scanner, and The location of the worker can be determined by applying the first distance and the second distance to the location information.

In the determining step, the first distance and the second distance may be calculated using a reception strength of a beacon signal as a result of the signal detection, and the position of the worker may be determined using coordinate information as the position information.

The storing step further stores location information on the fixed communication device installed facing the first scanner and the second scanner at the other side of the construction site, and the determining step includes: when determining the location of the worker The stored location information of the fixed communication device may be further used.

The determining may include the first distance based on a third distance and a fourth distance calculated using signal strength for each beacon signal of the fixed communication device respectively received by the first scanner and the second scanner. And it is possible to determine the position of the worker by the second distance.

The determining step includes determining the position of the worker by the first distance and the second distance based on a fifth distance calculated using the signal strength of the signal transmission device received from a third scanner as the fixed communication device. I can judge.

The storing step further stores location information for a fourth scanner installed next to the second scanner at one side of the construction site, and the determining step includes the signal transmission device provided from the fourth scanner It is possible to determine the position of the worker based on the first distance and the second distance based on the sixth distance calculated using the signal strength of.

The determining may include at least one of a maximum value, a minimum value, and an average value obtained by averaging the maximum value and the minimum value for the beacon signal of the fixed communication device respectively received by the first scanner and the second scanner. The position of the worker may be determined by determining the radio wave interference in the communication jurisdiction area of the first scanner and the second scanner using the value.

According to an embodiment of the present invention, since the location of a worker is identified through field installation devices installed for each section directly in the field, it is possible to accurately determine the location of the worker or equipment.

In addition, even if there is a temporary radio wave interference due to the special environment or construction equipment of the construction site, it will be possible to grasp the exact location of the worker or construction equipment by excluding it.

1 is a view showing a construction site safety management system according to an embodiment of the present invention,
2 and 3 are views for explaining an installation example and operation principle of the field installation device of FIG. 1;
Figure 4 is a block diagram illustrating the structure of the safety management device of Figure 1;
5 is a flowchart showing a driving process of the safety management apparatus of FIG. 1 according to the first embodiment of the present invention;
6 is a flow chart showing a driving process of the safety management device of FIG. 1 according to a second embodiment of the present invention, and
7 to 9 are exemplary views of a monitoring screen implemented by a safety management device according to an embodiment of the present invention.

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

1 is a view showing a construction site safety management system according to an embodiment of the present invention, Figures 2 and 3 are views for explaining an installation example and operation principle of the on-site installation device of FIG.

1, the construction site safety management system 90 according to an embodiment of the present invention includes a beacon device 100, a site installation device 111, a relay device 113, a communication network 120, and safety management. It includes some or all of the device 130.

Here, "including some or all" means that some components such as the relay device 113 and the communication network 120 are omitted, so that the on-site installation device 111 and the safety management device 130 communicate directly (eg, P2P Communication), or a part or all of the safety management device 130 is integrated into a network device (for example, a wireless switching device) in the communication network 120 to be configured, and a full understanding of the invention It will be described as including all to help.

First, the beacon device 100 is provided in a wearable article that the worker can wear, such as a hard hat, safety shoes, safety clothing, or a waist belt of a worker who works at a construction site 97 such as a tunnel construction. The beacon device 100 periodically emits a beacon signal, and in this process, the device identification information of the beacon device 100 may be transmitted. Of course, in the embodiment of the present invention, instead of the beacon device 100 to identify the worker, various devices capable of determining the location of the worker may be provided. For example, a tag device that performs radio frequency identification (RFID) communication may be used. Therefore, the communication device for notifying the location of the worker may be referred to as a signal transmission device. In addition, the apparatus for receiving signals from the signal transmission apparatus may be a signal receiving apparatus or a (signal) scanner. Hereinafter, a beacon scanner will be described as an example of a device that receives a beacon signal from a beacon device.

The on-site installation device 111 includes various devices installed in, for example, a tunnel at the construction site 97. For example, the field installation device 111 may include a beacon scanner (S1 to S4), a photographing device, and a sensing device for sensing gas in the construction site 97. The beacon scanners (S1 to S4) receive the beacon signal from the beacon device 100, which is a wearable device provided by the worker working in the tunnel, and transmit it to the relay device 113, and a photographing device such as a camera is the progress of the construction. The captured image may be transmitted to the relay device 113 so that the situation can be monitored. In the embodiment of the present invention, a beacon scanner (S1 to S4), etc., is used to accurately determine the location of the worker while reducing the cost when installing the communication device at the construction site 97. It may be possible to install a communication device to perform this. For example, a short-range communication device such as infrared, Bluetooth or ZigBee could be used.

As in the embodiment of the present invention, the beacon scanners S1 to S4 used as the on-site installation device 111 may be installed at intervals of 200m at, for example, one side of the tunnel. By receiving the beacon signal transmitted from the beacon device 100 of the worker through the beacon scanners (S1 to S4) installed at specified intervals as described above, for each area, for example, a beacon scanner (eg S1) and a beacon scanner adjacent to the beacon scanner (eg : It may be possible to determine the location of the worker in the area managed by S2). Here, the beacon scanners S1 to S4 installed on one side of the construction site may be referred to as a first communication device according to an embodiment of the present invention. For example, when the beacon scanners S1 to S4 are installed, the safety management device 130 may pre-store coordinate values as location information for the beacon scanners S1 to S4. Therefore, if each beacon scanner (S1 to S4) provides the signal reception strength (RSSI) of the beacon signal received from the same beacon device 100 provided by the operator as a signal detection result, each distance (r1, r2) through this ) Is calculated, and based on the calculated distance, if the location of each beacon scanner (S1 to S4) is found to meet each other, it will be the location of the operator. To this end, for example, in a trigonometric function, when the position of two points and the length of three sides are known, the method of obtaining the coordinates of the other point is implemented as an algorithm, or when the coordinates of the two points are known in a trigonometric function and the angle is known, the coordinates of the other point are determined. Algorithms could be implemented in such a way as to obtain.

In addition, in the embodiment of the present invention, in order to more clearly determine the location of the worker, for example, a beacon scanner or beacon device (B11 to B33) on the other side of the tunnel, that is, the side facing the beacon scanner (S1 to S4) is installed on-site. It can be further installed as the device 111. For example, when the beacon devices B11 to B33 are installed, it becomes the beacon devices B11 to B33 in a fixed state unlike the beacon device 100 provided by the worker. Therefore, in an embodiment of the present invention, the beacon device may be referred to as a fixed beacon device (B11 to B33). These beacon devices (B11 ~ B33) can be installed to face between the opposite beacon scanner (eg S1) and another beacon scanner (eg S2), for example, one side of the beacon scanner (S1 ~ S4) every 200m. ) Is installed, but beacon devices (B11 to B33) on the other side can be installed every 40m, for example, in the middle of 200m. In this way, when the beacon devices (B11 to B33) are installed, the opposite beacon scanners (S1 to S4) receive the beacon signals from the fixed beacon devices (B11 to B33) and transmit them to the safety management device 130, As a basis, an absolute distance between each beacon scanner S1 to S4 fixed at one side and the fixed beacon devices B11 to B33 may be calculated and stored based on the signal reception strength of the beacon signal. Alternatively, in the process, location information on the fixed beacon devices B11 to B33 may be stored in the form of coordinate values.

Therefore, when the worker moves from the construction site for work, the distance is calculated based on the signal reception strength of the beacon device 100 provided by the worker, and the position is determined as above, but the fixed beacon device (B11 ~ B33) can be finally determined by referring to the distance or location information.

In the embodiment of the present invention, it is illustrated that the fixed beacon devices B11 to B33 are provided on the other side of the tunnel, but the fixed beacon devices B11 to B33 may be replaced with another beacon scanner. In other words, as mentioned above, since it is sufficiently possible to track the location of the worker through the beacon scanners (S1 to S4) provided on one side, the device installed on the other side assists in determining the location of the tracked worker more accurately. It can also be viewed as playing a role. Accordingly, the communication device of the other side may be various devices such as a beacon scanner and fixed beacon devices B11 to B33. The communication device of the other side may be referred to as a second communication device in the embodiment of the present invention.

Of course, in the embodiment of the present invention, beacon scanners (S1 to S4) are installed in each section of the tunnel, so information on the beacon signal scanned by another beacon scanner (eg S2) is relayed through such a beacon scanner (eg S1). Although it can be transmitted to the device 113, an access point for receiving a beacon signal from the beacon scanners S1 to S4 and transmitting the beacon signal to the relay device 113 installed at the tunnel entrance may be further installed. . Since this can be configured in various ways by the designer who installs the communication system on the construction site 97 to the last, it will not be specifically limited to any one form in the embodiment of the present invention.

The relay device 113 may be installed around the entrance or exit of the construction site 97. Through this, the relay device 113 communicates with the access point in the tunnel or beacon scanners (S1 to S4), and transmits the signal detection result of the beacon signal provided by the beacon scanners (S1 to S4) through the communication network 120. It is to be provided to the safety management device 130 by way of. Accordingly, the relay device 113 may perform short-range wireless communication with the beacon scanners S1 to S4. Short-range wireless communication may include Bluetooth, Zigbee, Wi-Fi, and infrared (IrDA) communication. Of course, since it is possible to perform optical communication as a wired communication, it will not be specifically limited to any one form in the embodiment of the present invention.

The communication network 120 includes all wired and wireless communication networks. For example, as the communication network 120, a wired or wireless Internet network may be used or interlocked. 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), and Wibro networks. It is meant to include. 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 for a next-generation mobile communication system to be implemented in the future, for example, a cloud computing network or a 5G network under a cloud computing environment. For example, when the communication network 120 is a wired communication network, the access point in the communication network 120 can be connected to the switching center of the telephone office, but in the case of a wireless communication network, data is accessed by accessing SGSN or GGSN (Gateway GPRS Support Node) operated by the communication company. Alternatively, data can be processed by accessing various repeaters such as BTS (Base Station Transmission), NodeB, and e-NodeB.

The communication network 120 may include an access point. Here, the access point is a device installed by a communication company, and includes a small base station such as a femto or pico base station that is frequently installed in a building. Here, the femto or pico base station is classified according to how many relay devices 113 can be connected to the maximum according to the classification of the small base station. Of course, the access point includes a relay device 113 and a short-range communication module for performing short-range communication such as Zigbee and Wi-Fi. The access point may use TCP/IP or Real-Time Streaming Protocol (RTSP) for wireless communication. Here, short-range communication may be performed in various standards such as Bluetooth, Zigbee, infrared, radio frequency (RF) such as ultra high frequency (UHF) and very high frequency (VHF), and ultra wideband communication (UWB) in addition to Wi-Fi. Accordingly, the access point may 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 safety management device 130 along the designated communication path. The access point can share several lines in a general network environment, and includes, for example, a router, a repeater, and a repeater.

The safety management device 130 may perform a monitoring operation of a divided area divided by beacon scanners S1 to S4 within a tunnel, for example. For example, between the beacon scanners S1 and S2 installed every 200m in the tunnel may be a first area, and between the beacon scanners S2 and S3 may be a second area. For example, as can be seen in FIGS. 2 and 3, assuming that the total length (or width) of the tunnel is 5.9Km and about 3km per tunnel, the installation conditions of scanners (S1 to S4) are 200m each, beacon The devices B11 to B33 are 40m, of course, the installation section can be adjusted during the actual test process. Of course, if the TBM (Tunnel Boring Machine) method or the tunnel width is not wide, there will be no big error even if the beacon installation location and the operator's location are calculated identically. Accordingly, in an embodiment of the present invention, a hybrid method using scanners S1 to S4 and beacons B11 to B33 may be configured for accurate location tracking. A relative distance using the scanners S1 to S4 and the beacons B11 to B33 is established in the DB 130a. Register the actual distance and signal strength between scanners (eg S1 and S2), beacons (eg B11 and B12), and scanner and beacons (eg S1 and B11) in DB 130a. In addition, a reference (or standard) value for signal strength is set in consideration of the standard deviation of the beacon's irregular signal strength. [Table 1] exemplifies various types of data that can be stored in the DB 130a. The signal strength between each scanner (S1 to S4) and beacons (B11 to B33) can be converted into a DB by collecting the signal strength after installing the actual device and setting a standard value.

When the data construction process for the DB 130a is completed as described above, the safety management device 130 tracks the location of the worker through the beacon device 100 installed on the hard hat by the worker as shown in FIGS. 1 and 3 can do. You can track the operator's position step by step. For example, it is divided into steps 1 and 2 to track the location. For example, the first step is to reflect data on the operator's movement path to the logic and calculate the scanner's center distance. In addition, the second step is to calculate the operator's beacon position in the logic based on the scanner and beacon position and signal strength information to determine the detailed position. Here, logic may mean an algorithm.

More specifically, the safety management device 130 according to an embodiment of the present invention is a field supervisor, etc., by measuring the location information, that is, coordinate information, for two beacon scanners (eg, S1 and S2) through the experimental equipment as mentioned above. As it is already known, each distance is calculated through the signal reception strength of each beacon scanner (S1 to S4) for the worker's beacon device 100, and the location information of two points of the beacon scanner (e.g., S1 and S2) And since we know the distance to the worker's location, it is possible to know the location information about the location of the worker by applying it to the algorithm based on this. For example, since the distance between the beacon scanners (S1 to S4) is fixed at 200m, the distance of three points and the location information of the two points of the beacon scanners (S1 to S4) are known. You can get information about the location. In this way, it is possible to generate the location information of the worker.

In addition, as can be seen in Figure 3, it is possible to determine the location information of the worker not through two beacon scanners (for example, S1 and S2), but also through three beacon scanners (for example, S2, S3 and S4). The more location information that can be utilized, the more objective evidence that the worker's location information can be judged.

With this principle, in the embodiment of the present invention, the location information of the worker can be determined more accurately through the fixed beacon devices B11 to B33 or beacon scanners S1 to S4 installed on the other side of the tunnel. For example, if the fixed beacon devices (B11 to B33) are installed as mentioned above, the signal detection result of the beacon signals scanned by the opposite beacon scanners (S1 to S4) is used to communicate with the fixed beacon devices (B11 to B33). The distance can be calculated, and through this, the location information of the fixed beacon devices (B11 to B33) can be calculated. For example, if the location information of the first beacon scanner S1 on the coordinate plane is the coordinate values (1, 1), the location information of the second beacon scanner S2 may be the coordinate values (1, 200), Accordingly, the location information of the first fixed beacon device B11 on the opposite side may be set in the same manner as the coordinate values 10 and 40. This may vary slightly depending on how many sections the tunnel width is divided into when creating the monitoring screen. For example, if 1 coordinate is set for every 1m section, 200m will have a coordinate value of 200. Therefore, if the width of the tunnel is calculated and becomes, for example, 10m, the coordinate value will be 10. It is 1m per coordinate.

Accordingly, the safety management device 130 can track the location of the worker in various forms based on the distance or coordinate value stored in the DB 130a. For example, two beacon scanners installed on one side (e.g., S1 and S2) are used to track the operator's position, but in certain situations, the position is further utilized by using a fixed beacon device on the opposite side (e.g., B11 to B14). I can trace it. For example, when radio wave interference from construction equipment in a tunnel is detected, this can also be known through data learning. If it is judged to be abnormal outside the standard range compared to the previously stored data, change the location measurement method. will be. In this way, the safety management device 130 may further increase the accuracy of tracking a worker's location through deep learning of artificial intelligence (AI).

Of course, even if not in this way, the safety management device 130 is the maximum and minimum values in the normal construction environment based on the signal reception strength from the beacon scanners S1 to S4 for the fixed beacon devices B11 to B33. And, since the average value obtained by the average thereof can be previously stored in the DB 130a as shown in [Table 1], when radio wave interference is predicted, accurate positioning of the operator can be performed by referring to the corresponding values. For example, when a worker is located between the beacon scanners S1 and S2, the reception strength of the beacon signal received from the beacon device 100 of the worker is fixed to that of the beacon signal received from the fixed beacon device (eg, B11 ~ B14). It is possible to measure a distance according to the beacon signal without radio interference by determining whether it is above the average value or below the minimum value by comparing the reception strength. In this way, the safety management device 130 can more accurately measure the position of the worker even in a specific environment based on various data stored in the DB 130a according to the predicted situation of the construction site 97.

4 is a block diagram illustrating the structure of the safety management device of FIG. 1.

As shown in FIG. 4, the safety management device 130 of FIG. 1 according to an embodiment of the present invention includes a communication interface unit 400, a control unit 410, a section division monitoring unit 420, and a storage unit 430. Includes some or all of.

Here, "including some or all" means that some components such as the storage unit 430 are omitted so that the safety management device 130 is configured, or some components such as the section division monitoring unit 420 are used as the control unit ( 410), which can be integrated into and configured with other components, and will be described as including all in order to help a sufficient understanding of the invention.

The communication interface unit 400 communicates with the relay device 113 of the construction site 97 via the communication network 120. Through this, the communication interface unit 400 receives the signal detection result of the worker's beacon device 100 provided by the on-site installation device 111 installed at the construction site 97 to the relay device 113, and the control unit 410 ). Here, the signal detection result may include device identification information for the beacon device 100, and may include information on the signal reception strength of the beacon signal. Of course, the reception strength means the reception strength of the signal.

The control unit 410 is in charge of overall control operations of the communication interface unit 400, the section division monitoring unit 420, and the storage unit 430 constituting the safety management device 130. A signal detection result for the beacon device 100 of FIG. 1 provided by the operator of the construction site 97 provided by the communication interface unit 400 is temporarily stored in the storage unit 430, or a section division monitoring unit is immediately provided. You can pass it to 420. In addition, the control unit 410 may obtain necessary data from the DB 130a of FIG. 1 and temporarily store it in the storage unit 430 at the request of the section division monitoring unit 420. For example, it will be possible to store the location information such as the beacon scanner (S1 ~ S4) of the construction site 97 stored in the DB (130a) at the beginning of the construction site work in the storage unit 430. .

Meanwhile, the controller 410 of FIG. 4 may include a CPU and a memory according to another embodiment of the present invention. Of course, the CPU and memory can be formed in one chip. The CPU copies the program stored in the section division monitoring unit 420, loads it into the memory, and executes it. This can quickly increase the data processing speed. The CPU may include a control circuit, an operation unit (ALU), an instruction analysis unit, a registry, etc., and the control circuit performs a control operation, the operation unit operates on binary bit information, and the instruction analysis unit operates on input binary bit information. It interprets the machine language for the CPU so that it can understand the operation, and the registry can be involved in software data storage. The memory may include RAM.

Section division monitoring unit 420 is based on the location information or distance information of the beacon scanners (S1 ~ S4) and fixed beacon devices (B11 ~ B33) installed in the construction site (97). It tracks the location of the operator changing location. Of course, for location tracking, the operator uses the beacon device 100 mounted on a hard hat. Of course, using the beacon device 100 or the beacon scanners S1 to S4 can be seen as an aspect to reduce construction costs. In this way, the construction cost is inexpensive, but the safety of the worker cannot be neglected. Therefore, beacon scanners S1 to S4 can be installed and used in the site for more accurate positioning.

For example, the section division monitoring unit 420 tracks workers based on beacon scanners S1 to S4 installed in each section. In other words, if three beacon scanners are installed in section A, the locations of workers in section A are tracked by making full use of those three. For example, if it is determined that there is no special situation, that is, radio interference, etc. in section A by learning, the location of the worker is tracked using two beacon scanners. However, when it is determined that there is interference, the beacon scanner may be detected and the beacon scanner may be excluded from positioning.

In other words, when there are the first to the third beacon scanners in section A, only two with high signal reception strength are normally used. However, when radio wave interference is suspected, a first beacon scanner and a second beacon scanner are used, and a second beacon scanner and a third beacon scanner are used, and further, a first beacon scanner and a third beacon scanner are used. When the location of the worker is determined to be approximately the same or accurate from the number of the above three cases, the location information is determined as the location information of the worker. On the other hand, if the location information of the worker in one place is significantly different when compared with the location information of another location, the corresponding value can be excluded and the location information of the worker can be determined based on the other two values. As described above, since the method of tracking the location of the worker within a specific section of the construction site 97 may be various, it will not be specifically limited to any one method.

Of course, as mentioned above, the worker's location is not determined by using beacon scanners (S1 to S4) provided on one side of the tunnel, but by using a fixed beacon device (B11 to B33) installed on the opposite side or another beacon scanner. Even when measuring and using the opposite beacon scanners (S1 to S4), the operator's position can be positioned in the same manner as above, and thus the embodiment of the present invention will not be particularly limited to any one method. The section division monitoring unit 420 according to an embodiment of the present invention may execute a positioning algorithm for positioning a worker's location.

In addition, the section division monitoring unit 420 is a fixed beacon installed opposite beacon scanners (S1 to S4) and the beacon scanners (S1 to S4) in order to accurately position the operator by excluding radio interference. After storing data on the maximum value, the minimum value, and the average value obtained by the average of the maximum value through the signal reception strength with the devices B11 to B33, it is also possible to perform accurate positioning after determining whether there is interference by using the data. In this regard, since it has been sufficiently described above, further description will be omitted.

The storage unit 430 may store various types of information and data processed under the control of the controller 410. While the information refers to information such as device identification information, the data may refer to data such as signal reception strength. In an embodiment of the present invention, this may be collectively referred to as a signal detection result. In addition, the storage unit 430 stores the location information or distance information about the devices in the construction site 97 obtained from the DB 130a under the control of the control unit 410, and outputs according to the request of the control unit 410 Thus, it may be provided to the section division monitoring unit 420.

5 is a flowchart illustrating a driving process of the safety management device of FIG. 1 according to the first embodiment of the present invention.

For convenience of explanation, referring to FIG. 5 together with FIGS. 1 to 3, the safety management device 130 of FIG. 1 according to an embodiment of the present invention is a construction site with an interval at each designated distance at a construction site 97 in an arbitrary space. The location information for the first scanner and the second scanner installed on one side of (97) is stored in the storage unit (S500). Here, the location information for the first scanner and the second scanner may be stored in the form of coordinate information. In addition, since they are installed at intervals for each specified distance, the interval between the first scanner and the second scanner may be 200m according to an embodiment of the present invention. In other words, the distance between the two scanners is 200m.

In addition, the safety management device 130 receives each signal detection result for the beacon device 100 provided by the worker at the construction site 97 from the first scanner and the second scanner, and stores the received signal detection result and storage. The location of the worker is determined based on the location information (S510). Here, the signal detection result may include device identification information of the beacon device 100 and signal reception strength of the beacon signal.

Therefore, the safety management device 130 calculates the distance between the operator's beacon device 100 and each scanner (S1 to S4) based on the received signal reception strength, and the calculated distance and each scanner (S1 to S4) The location of the worker is determined based on the location information.

Of course, when the location is determined, the location of the worker is displayed on the monitoring screen of the construction site 97 and the location can be tracked.

In addition to the above, the safety management device 130 performs various operations, but details have been sufficiently described above, and thus the contents will be substituted.

6 is a flowchart showing an operation process of the safety management device of FIG. 1 according to a second embodiment of the present invention.

For convenience of explanation, referring to FIG. 6 together with FIGS. 1 to 3, the safety management device 130 of FIG. 1 according to an embodiment of the present invention is a scanner (S1 to S4) installed at a predetermined distance from the construction site 97 The absolute distance between the fixed beacon (device) (B11 ~ B33) installed at a certain distance of the corresponding construction site 97 is set (S600). For example, if the scanners S1 to S4 are installed every 200m, the fixed beacons B11 to B33 are installed every 40m in a corresponding section. Accordingly, it can be seen that a total of four fixed beacons B11 to B14 are installed between the scanner (eg, S1) and the scanner (eg, S2) as shown in FIGS. 2 and 3. Of course, when a fixed beacon is installed in a portion corresponding to the scanner, a total of six fixed beacons (B1 to B2) may be installed. Accordingly, the safety management device 130 measures the distance between fixed beacons (eg, B11 ~ B14) and two beacon scanners (eg, S1, S2) in charge of communication in the designated section to measure the measured value. It can be viewed as saving. As mentioned above, the signal reception strength for the beacon signals of the fixed beacons (B11 to B14) can be used as well as the distance.

In addition, the safety management device 130 measures the maximum value (Max) or minimum value (Min) of the signal strength between the scanners (S1 to S4) and the fixed beacons (B11 to B33), and uses the values to measure the average value (Avg ) Can be calculated and stored (S610). Of course, these values are pre-stored in the DB 130a of FIG. 1, and through this, even if there is radio wave interference by construction equipment in the corresponding section, by referring to the corresponding values, the operator's location measurement is re-performed or You can change it.

Further, the safety management device 130 checks the worker beacon (device) 100 through the scanner (S1 to S4) (S620). In other words, when the installation of scanners (S1 to S4) and fixed beacons (B11 to B33) at the construction site 97 is completed, and data on the normal state in the construction site 97 by the installed devices is completed, , When a worker or construction equipment is put into the construction site 97, the location at the construction site 97 is tracked through the beacon (device) 100 of the worker and the beacon of the construction equipment.

In this process, the safety management device 130 estimates (or judges) the worker's position based on the signal strength between the worker beacon and the fixed beacons B11 to B33 and the scanners S1 to S4 at the corresponding position (S630). The method of measuring the operator's location may vary, but as mentioned above, the signal of the beacon signal that can be obtained by communication between the two beacon scanners (e.g., S1, S2) and the operator's beacon in charge of communication in each section The location of the operator can be determined using the reception strength, and the location of the fixed beacon or the signal strength can be further used in the process. If radio interference is expected, the measurement object can be changed and the resulting signal strength can be used. There will be. In this regard, since it has been sufficiently explained above, it will be replaced with the contents.

In addition to the above, the safety management device 130 of FIG. 6 can perform various operations, and since it has been sufficiently described above in connection with this, the contents will be substituted.

7 to 9 are exemplary views of a monitoring screen implemented in the safety management device according to an embodiment of the present invention.

Referring to FIGS. 7 to 9 together with FIGS. 1 to 3, the safety management device 130 of FIG. 1 is a dashboard as in FIG. 7 on a monitor screen for monitoring workers and work status of the construction site 97. That is, the main screen can be displayed. For example, FIG. 7 shows the overall status of the construction site 97 in the tunnel. For example, if you want to enlarge and view a screen of a specific area on the screen of FIG. 7, select or enlarge the screen to see, for example, FIG. 8 You can display the same screen as in.

As can be seen in FIGS. 7 and 8, the positions of workers can be displayed in a virtual screen that virtualizes both tunnels in which construction is in progress, and the names of workers at the corresponding locations can be displayed together on the screen. Of course, in the case of construction equipment, information that can identify the equipment is also displayed on the screen.

In the embodiment of the present invention, for example, beacon scanners (S1 to S4) are installed every 200m on one side of the construction site 97, and fixed beacons (B11 to B33) are installed every 40m on the other side, and the work is performed between them. It will be possible to accurately monitor rulers and construction equipment. In particular, even if there is radio wave interference inside, since it detects it and changes the measurement object or method to perform positioning of the operator or construction equipment, accurate positioning is achieved.

As shown in FIG. 9, since each block on the screen has a length of 100m, it can be seen that the beacon scanners S1 to S4 according to the embodiment of the present invention are installed for every two blocks. Since this can be freely adjusted by experience at the actual construction site, it will not be specifically limited to any one form in the embodiment of the present invention.

On the other hand, even if all the constituent elements constituting an embodiment of the present invention are described as being combined into one or operating 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 of the constituent elements may be selectively combined and operated in one or more. In addition, although all the components may be implemented as one independent hardware, a program module that performs some or all functions combined in one or more hardware by selectively combining some or all of the components. It may be implemented as a computer program having Codes and code segments constituting the computer program may be easily inferred by those skilled in the art of the present invention. Such a computer program is stored in a non-transitory computer readable media that can be read by a computer and is read and executed by a computer, thereby implementing an embodiment of the present invention.

Here, the non-transitory readable recording medium is not a medium that stores data for a short moment, such as a register, cache, memory, etc., but a medium that stores data semi-permanently and can be read by a device. . 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, or 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 is generally used in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Various modifications are possible by those skilled in the art of course, and these modifications should not be individually understood from the technical idea or perspective of the present invention.

100: beacon device 111: field installation device
113: relay device 120: communication network
130: safety management device 400: communication interface unit
410: control unit 420: section division monitoring unit
430: storage unit

Claims (16)

A storage unit for storing location information for the first scanner and the second scanner installed at one side of the construction site at intervals at each specified distance at the construction site in an arbitrary space; And
Each signal detection result of the signal transmission device provided by the worker at the construction site is received from the first scanner and the second scanner, and based on the received signal detection result and the stored location information, A control unit for determining a location;
Safety management device for monitoring divided areas of the construction site including. The method of claim 1,
The control unit calculates a first distance and a second distance, respectively, based on a first signal detection result provided by the first scanner and a second signal detection result provided by the second scanner, and the calculated first distance And a safety management device for monitoring a divided area of a construction site to determine the location of the worker by applying a second distance to the location information. The method of claim 2,
The control unit calculates the first distance and the second distance using the reception strength of the signal transmission signal as the signal detection result, and determines the location of the worker using coordinate information as the location information. Safety management device for area monitoring. The method of claim 3,
The storage unit further stores location information for a fixed communication device installed facing the first scanner and the second scanner at the other side of the construction site,
The control unit is a safety management device for monitoring a divided area of a construction site further using the stored location information of the fixed communication device when determining the location of the worker. The method of claim 4,
The control unit includes the first distance and the first distance based on a third distance and a fourth distance calculated using signal strength for each signal transmission signal of the fixed communication device received by the first scanner and the second scanner, respectively. Safety management device for monitoring a divided area of a construction site to determine the location of the worker by the second distance. The method of claim 4,
The control unit determines the position of the worker based on the first distance and the second distance based on a fifth distance calculated using the signal strength of the signal transmission device received from the third scanner as the fixed communication device. Safety management device for monitoring divided areas at construction sites. The method of claim 4,
The storage unit further stores location information for a fourth scanner installed next to the second scanner at one side of the construction site,
The control unit divides the construction site to determine the location of the worker by the first distance and the second distance based on a sixth distance calculated using the signal strength of the signal transmission device provided from the fourth scanner Safety management device for area monitoring. The method of claim 4,
The control unit includes a maximum value (Max), a minimum value (Min) of the signal strength of the signal transmission signal of the fixed communication device received by the first scanner and the second scanner, respectively, and an average of the maximum value and the minimum value. A safety management device for monitoring a divided area of a construction site for determining the location of the worker by determining radio interference in a communication jurisdiction area of the first scanner and the second scanner using at least one of the average values Avg. As a driving method of a safety management device for monitoring divided areas of a construction site including a storage unit and a control unit,
Storing location information on the first scanner and the second scanner installed at one side of the construction site at intervals at each designated distance at a construction site in an arbitrary space in the storage unit; And
The control unit receives each signal detection result of the signal transmission device provided by the worker at the construction site from the first scanner and the second scanner, based on the received signal detection result and the stored location information. Determining the location of the worker;
Driving method of a safety management device for monitoring divided areas of a construction site including. The method of claim 9,
The determining step,
Each of the first and second distances is calculated based on the first signal detection result provided by the first scanner and the second signal detection result provided by the second scanner, and the calculated first and second distances A method of driving a safety management device for monitoring a divided area of a construction site by applying to the location information to determine the location of the worker. The method of claim 10,
The determining step,
As a result of the signal detection, the first distance and the second distance are calculated using the reception strength of the signal transmission signal, and the position of the worker is determined using coordinate information as the location information. How to drive the safety management device. The method of claim 11,
The storing step,
Further storing location information on the fixed communication device installed facing the first scanner and the second scanner at the other side of the construction site,
The determining step,
A method of driving a safety management device for monitoring a divided area of a construction site further using the stored location information of the fixed communication device when determining the location of the worker. The method of claim 12,
The determining step,
The first distance and the second distance based on a third distance and a fourth distance calculated using signal strength for each signal transmission signal of the fixed communication device respectively received by the first scanner and the second scanner A driving method of a safety management device for monitoring divided areas of a construction site to determine the location of the worker by. The method of claim 12,
The determining step,
Division of the construction site to determine the location of the worker by the first distance and the second distance based on the fifth distance calculated using the signal strength of the signal transmission device received from the third scanner as the fixed communication device Driving method of safety management device for area monitoring. The method of claim 12,
The storing step,
At one side of the construction site, further storing location information for a fourth scanner installed next to the second scanner,
The determining step,
For monitoring a divided area of a construction site to determine the location of the worker by the first distance and the second distance based on a sixth distance calculated using the signal strength of the signal transmission device provided from the fourth scanner How to drive the safety management device. The method of claim 12,
The determining step,
The first and second scanners use at least one of a maximum value, a minimum value, and an average value obtained by averaging the maximum value and the minimum value for the signal transmission signal of the fixed communication device respectively A method of driving a safety management device for monitoring a divided area of a construction site for determining the location of the worker by determining the radio wave interference in the communication jurisdiction of the 1 scanner and the second scanner.

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