JP6956018B2 - Safety management system - Google Patents

Description

Embodiments of the present invention relate to safety management systems.

At construction sites, etc., the supervisor carried out safety management by patrols around the site to prevent workers from entering dangerous areas. However, the supervisor could not perform sufficient safety management because he could not constantly monitor the dangerous area. Since it is unpredictable when a disaster will occur, it is desired to reduce the blank time when safety management is not performed.

Japanese Unexamined Patent Publication No. 2001-07569 Japanese Unexamined Patent Publication No. 2008-097592

Provide a safety management system that can suppress a blank time when safety management is not performed.

The safety management system according to the present embodiment includes a positioning device attached to a helmet and measuring the position of the helmet. The terminal communicatively connected to the positioning device receives the position of the helmet measured by the positioning device and sends a first warning signal when the position of the helmet is within a preset danger zone. The warning generator is attached to the helmet and communicatively connected to the terminal, receives the first warning signal and generates a warning.

The conceptual diagram which shows the structural example of the safety management system by 1st Embodiment. The block diagram which shows the configuration example of the safety management system by 1st Embodiment. A conceptual diagram showing an example of a map displayed on a terminal. The conceptual diagram which shows the configuration example of the safety management system by the modification 1. The conceptual diagram which shows the configuration example of the safety management system by the modification 2.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. The present embodiment is not limited to the present invention. The drawings are schematic or conceptual, and the ratio of each part is not always the same as the actual one. In the specification and the drawings, the same elements as those described above with respect to the existing drawings are designated by the same reference numerals, and detailed description thereof will be omitted as appropriate.

(First Embodiment)
FIG. 1 is a conceptual diagram showing a configuration example of the safety management system 1 according to the first embodiment. FIG. 2 is a block diagram showing a configuration example of the safety management system 1 according to the first embodiment. The safety management system 1 according to the first embodiment is a system that manages the safety of a plurality of workers at a construction site or the like. The safety management system 1 suppresses the operator from entering the danger zone 100 and prevents accidents. For this purpose, the safety management system 1 has the following configuration.

The safety management system 1 includes a helmet 2, a terminal 3, a GPS receiver 10, an alarm device 30, a camera 40, a temperature sensor 50, and a humidity sensor 60. At the construction site, the worker 4 always wears the helmet 2. It shall not be possible to enter the construction site without wearing the helmet 2.

The GPS receiver 10 as a positioning device is attached to the helmet 2 and receives radio waves from GPS satellites to identify its own position. Since the GPS receiver 10 is fixedly arranged on the helmet 2, the position of the GPS receiver 10 is substantially equal to the position of the helmet 2. That is, it can be said that the GPS receiver 10 measures the position of the helmet 2.

The terminal 3 is, for example, a mobile terminal with a monitor such as a smartphone, a tablet, or a PC. The terminal 3 is possessed by the supervisor in order to manage the safety of workers at the construction site and the like. The terminal 3 is wirelessly connected to the GPS receiver 10, the warning generator 30, the temperature sensor 50, and the humidity sensor 60 attached to the helmet 2. For wireless communication, for example, WiFi, the Internet, or the like may be used.

Further, as shown in FIG. 2, the terminal 3 includes a storage unit 70, a calculation unit 80, a display unit 90, and a speaker 95. The storage unit 70 stores map information and the like of the construction site in addition to the program for operating the safety management system 1. The calculation unit 80 operates the entire terminal 3 and executes the program of the safety management system 1. Further, the calculation unit 80 makes it possible to set the danger zone 100 in the map information. The setting of the danger zone 100 may be input by the user using the terminal 3. For example, the user may set the range by touching (pinch) the dangerous area 100 with a finger in the map information of the construction site displayed on the display unit 90. The set danger zone is stored in the storage unit 70. A display example of the construction site map displayed on the display unit 90 of the terminal 3 will be described later with reference to FIG.

The display unit 90 displays the map information, and displays the positions of the danger zone 100 and the helmet 2 (that is, the positions of the workers) on the map information.

The terminal 3 receives the position information of the helmet 2 measured by the GPS receiver 10, and when the position of the helmet 2 (the position of the worker) is within the preset danger zone 100, the terminal 3 gives a first warning signal as an alarm device. Call to 30. Further, the terminal 3 may display an alarm on the display unit 90 or generate an alarm sound on the speaker 95 when the worker enters the danger zone 100. This allows the supervisor to know that the worker has entered the danger zone.
On the other hand, when the position of the helmet 2 is outside the danger zone, the terminal 3 does not send a warning signal to the alarm device 30 and does not generate an alarm on the display unit 90 or the speaker 95, and simply helmets. The position of 2 may be displayed on the map.

The alarm device 30 as a warning generator is attached to the helmet 2 and is communicably connected to the terminal 3. When the alarm device 30 receives the first warning signal from the terminal 3, the alarm device 30 generates an alarm. The alarm device 30 may be, for example, a lamp or a speaker. If the worker enters the danger zone 100, the lamp as the alarm device 30 lights up, or the speaker as the alarm device 30 emits a warning sound. As a result, the worker can recognize that he / she has entered the danger zone 100.

The camera 40 is attached to the helmet 2 and is communicatively connected to the terminal 3. The camera 40 takes an image of the periphery of the helmet 2 and transmits the image information to the terminal 3. The terminal 3 causes the display unit 90 to display the image information from the camera 40. As a result, the supervisor can grasp not only the position of the helmet 2 (personal contractor) but also the surrounding situation on the terminal 3 in real time.

The camera 40 may always capture an image of its surroundings while the operator is wearing it. Alternatively, the camera 40 may be in a standby state without taking an image when the worker is outside the dangerous area 100, and may start taking an image when the worker enters the dangerous area 100. By receiving the first warning signal from the terminal 3, the camera 40 can recognize that the worker has entered the dangerous area. Therefore, the camera 40 may start imaging when it receives the first warning signal from the terminal 3. As a result, the power consumption of the camera 40 can be suppressed. Further, the terminal 3 can suppress an increase in the capacity of the image data captured by the camera 40 and reduce the amount of image data stored in the storage unit 70.

Further, the terminal 3 can display the image of the site captured by the camera 40 on the display unit 90 almost at the same time as the transmission of the first warning signal and the display of the alarm on the display unit 90 or the speaker 95. As a result, the supervisor can grasp the situation around the contractor with an image immediately after the alarm notifies that the worker has entered the danger zone 100.

Further, the camera 40 may start imaging by a command from the terminal 3. For example, when the supervisor wants to refer to an image around the worker, the supervisor operates the terminal 3 to transmit an imaging start signal to the camera 40. Upon receiving the imaging start signal, the camera 40 starts imaging around the helmet 2 and transmits the image data to the terminal 3. As a result, the supervisor can arbitrarily refer to the image around the worker.

The temperature sensor 50 is attached to the helmet 2 and is communicably connected to the terminal 3. The temperature sensor 50 measures the temperature around the helmet 2 and transmits the temperature measurement value to the terminal 3. The humidity sensor 60 is also attached to the helmet 2 and communicatively connected to the terminal 3. The humidity sensor 60 measures the humidity around the helmet 2 and transmits the humidity measurement value to the terminal 3.

For example, if the temperature or humidity is high, the worker may suffer from heat stroke. In general, it is known that when the WBGT (Wet Bulb Globe Temperature) value exceeds about 28 ° C., the number of heat stroke patients increases rapidly. Therefore, the first and second threshold values such that the WBGT value becomes the third value (for example, about 28 ° C.) are set in advance and stored in the storage unit 70.

The terminal 3 transmits a second warning signal to the alarm device 30 when the WBGT value obtained based on the temperature measurement value from the temperature sensor 50 and the humidity measurement value from the humidity sensor 60 exceeds the third threshold value. The alarm device 30 receives the second warning signal and generates an alarm. The alarm allows the worker to recognize the risk of heat stroke. The alarm by the second warning signal is different from the alarm by the first warning signal. As a result, the operator can distinguish between an alarm notifying that the user has entered the danger zone 100 and an alarm notifying the danger of heat stroke.

When there are a plurality of helmets 2 at the construction site, the terminal 3 needs to identify each helmet 2. Therefore, the GPS receiver 10, the alarm device 30, the camera 40, the temperature sensor 50, and the humidity sensor 60 each have an identifier. The identifier may be shared for each helmet 2. In this case, the GPS receiver 10, the alarm device 30, the camera 40, the temperature sensor 50, and the humidity sensor 60 attached to a certain helmet 2 have the same identifier. Alternatively, the GPS receiver 10, the alarm device 30, the camera 40, the temperature sensor 50, and the humidity sensor 60 may each have different identifiers. In this case, the identifiers of the GPS receiver 10, the alarm device 30, the camera 40, the temperature sensor 50, and the humidity sensor 60 attached to a certain helmet 2 are associated with each other in the terminal 3 and stored in advance in the storage unit 70. back.

The GPS receiver 10, the camera 40, the temperature sensor 50, and the humidity sensor 60 transmit their own identifier to the terminal 3 together with the position information, the image information, the temperature measurement value, and the humidity measurement value. Further, when the terminal 3 transmits the first or second warning signal, the terminal 3 also transmits an identifier together with the first or second warning signal. The alarm device 30 corresponding to or associated with the identifier raises the alarm. As a result, even if a plurality of workers are wearing a plurality of helmets 2, the terminal 3 can notify the alarm only to the workers who have entered the danger zone 100.

A motion sensor 99 may be provided in the danger zone 100. The motion sensor 99 may be, for example, an infrared sensor, an ultrasonic sensor, a visible light sensor, or the like, and can detect the approach of the operator 4. The motion sensor 99 is communicably connected to the terminal 3. The motion sensor 99 is arranged in the vicinity of each danger zone 100 and has an identifier. The motion sensor 99 transmits a detection signal and an identifier to the terminal 3 when the operator is detected. The terminal 3 transmits the third warning signal and the identifier of the motion sensor 99 in response to the reception of the detection signal and the identifier. The alarm device 30 corresponding to or associated with the identifier receives the third warning signal and generates an alarm. As a result, the terminal 3 can notify the alarm only to the operator who approaches the danger zone 100 via the alarm device 30.

FIG. 3 is a conceptual diagram showing an example of a map displayed on the terminal 3. A map of the construction site is displayed on the display unit 90 of the terminal 3. Hazardous areas 100a to 100c are set in the map. The danger zones 100a to 100c are preset by the supervisor and stored in the storage unit 70.

At the construction site, five workers are working wearing helmets 2a to 2e. The GPS receivers 10 of the helmets 2a to 2e transmit the respective position information and the identifier of the GPS receiver 10 to the terminal 3. The terminal 3 displays the position and identifier of each helmet 2a to 2e on the map of the display unit 90 based on the position information and the identifier of each GPS receiver 10. This allows the supervisor to know where and who is at the construction site.

Here, the worker wearing the helmets 2a, 2b, 2c to 2e is outside the danger zone 100a to 100c. Therefore, the terminal 3 does not transmit the first warning signal together with the identifiers of the helmets 2a, 2b, 2c and 2e. On the other hand, the worker wearing the helmet 2c has entered the danger zone 100b. Therefore, the terminal 3 transmits the first warning signal together with the identifier of the helmet 2c. As a result, the alarm device 30 of the helmet 2c generates an alarm based on the first warning signal. The operator wearing the helmet 2c can recognize the occurrence of the alarm and evacuate from the danger zone 100b. In this way, the supervisor can collectively manage a plurality of workers working on the entire construction site in real time. In addition, the supervisor can perform safety management so as to prevent a plurality of workers from entering the plurality of dangerous areas 100a to 100c.

Further, for example, the temperature sensor 50 and the humidity sensor 60 of the helmets 2a to 2e transmit the temperature measurement value and the humidity measurement value to the terminal 3 together with the respective identifiers. When the WBGT value exceeds the third threshold value in the place where the worker wearing the helmet 2d is present, the terminal 3 transmits the second warning signal and the identifier of the alarm device 30 of the helmet 2d. The alarm device 30 of the helmet 2d receives the second warning signal and its own identifier to generate an alarm. As a result, the worker wearing the helmet 2d can recognize that there is a risk of heat stroke. In this way, the supervisor can ensure the safety of a plurality of workers working on the entire construction site in real time.

(Modification example 1)
FIG. 4 is a conceptual diagram showing a configuration example of the safety management system 1 according to the modified example 1. The safety management system 1 of the first modification further includes an alarm device 32 provided in the danger zone 100 and a camera 42 provided in the danger zone 100. Other configurations of the first modification may be the same as the corresponding configurations of the first embodiment.

The alarm device 32 and the camera 42 are communicably connected to the motion sensor 99. The motion sensor 99, the alarm device 32, and the camera 42 are provided for each danger zone 100. The motion sensor 99, the alarm device 32, and the camera 42 provided in a certain danger zone 100 are associated with each other by an identifier or the like.

For example, when the motion sensor 99 detects the approach of an operator in a certain danger zone 100, the motion sensor 99 transmits a warning signal and an identifier to the alarm device 32 and the camera 42. As a result, the alarm device 32 and the camera 42 installed in the corresponding danger zone 100 operate, but the alarm device 32 and the camera 42 installed in the other danger zone 100 do not operate. Therefore, the alarm device 32 can directly receive the warning signal from the motion sensor 99 in addition to the warning signal from the terminal 3 to generate an alarm for the operator. In addition to the warning signal from the terminal 3, the camera 42 can directly receive the warning signal from the motion sensor 99 and capture an image of the danger zone 100.

In this way, the motion sensor 99, the alarm device 32, and the camera 42 may be installed in each danger zone 100. As a result, the safety management system 1 can ensure the safety of the operator by the alarm from the alarm device 30 attached to the helmet 2 and the alarm from the alarm device 32 arranged in the danger zone 100.

(Modification 2)
FIG. 5 is a conceptual diagram showing a configuration example of the safety management system 1 according to the modified example 2. The safety management system 1 of the second modification further includes a transceiver 55 attached to the helmet 2. Other configurations of the modified example 2 may be the same as the configurations of the first embodiment or the modified example 1.

The transceiver 55 is connected to the terminal 3 so as to be capable of voice communication. When the position of the helmet 2 is within the danger zone 100, the terminal 3 transmits the first warning signal and automatically enables voice communication with the transceiver 55. As a result, the supervisor can talk with the operator wearing the helmet 2 via the terminal 3 via the transceiver 55.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof.

1 Safety management system, 100 Hazardous areas, 2 Helmets, 3 terminals, 10 GPS receivers, 30, 32 alarm devices, 40, 42 cameras, 50 temperature sensors, 55 transceivers, 60 humidity sensors, 99 motion sensors

Claims (3)

A positioning device that is attached to a helmet and measures the position of the helmet,
A terminal communicatively connected to the positioning device that receives the position of the helmet measured by the positioning device and issues a first warning signal when the position of the helmet is within a preset danger zone. The terminal to make a call and
A warning generator that is attached to the helmet and is communicably connected to the terminal and receives the first warning signal to generate a warning .
The terminal
A storage unit that stores map information and
A display unit that displays the position of the helmet on the map information,
It is provided with a calculation unit that enables the dangerous area to be set in the map information.
A camera that is attached to the helmet and is communicably connected to the terminal, images the periphery of the helmet and transmits the image information to the terminal is further provided.
The terminal receives the image information from the camera, displays the image information, and displays the image information.
When the camera receives the first warning signal, it starts taking an image of the surroundings of the helmet, transmits the image information to the terminal, and receives the image information.
A temperature sensor attached to the helmet and communicatively connected to the terminal to measure the temperature around the helmet.
Further equipped with a humidity sensor attached to the helmet and communicatively connected to the terminal to measure the humidity around the helmet.
The terminal transmits a second warning signal when the temperature measurement value from the temperature sensor and the WBGT (Wet Bulb Globe Temperature) value obtained based on the humidity measurement value from the humidity sensor exceed a certain threshold value. death,
The warning generator is a safety management system that receives the second warning signal and generates a warning. Further equipped with a motion sensor located in the danger zone and communicatively connected to the terminal.
When the motion sensor detects an operator, the motion sensor transmits a detection signal to the terminal.
The terminal transmits a third warning signal in response to the reception of the detection signal.
The safety management system according to claim 1 , wherein the warning generator receives the third warning signal and generates a warning. Further equipped with a transceiver connected to the terminal so as to be able to make a voice call,
The safety management system according to claim 1 , wherein the terminal is connected to the transceiver so as to be able to talk when the position of the helmet is in the danger zone.

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