Notification device and notification system

Abstract

To provide a notification device and notification system capable of rapidly recognizing an object to be watched.SOLUTION: A notification device 2 to be mounted on a worker who works in a construction site so as to notify the worker of an approach of an object to be watched includes: a communication section 24 for receiving information related to the object; a position sensor 21 for detecting a position of the notification device 2; a geomagnetic sensor 22 for detecting a direction to which the notification device 2 is directed; and a notification section 23 for notifying the worker of the approach of the object. Information to be notified from the notification section 23 to the worker includes relative direction information of the approach of the object to the worker.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an alarm device and an alarm system. [Background technology]

[0002] BACKGROUND ART Conventionally, a warning system has been proposed that detects a vehicle entering a construction site and warns workers at the construction site of danger (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-218618 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with the technology disclosed in Patent Document 1, even if a worker is alerted to a danger based on the detection of a vehicle, the worker may not be able to quickly recognize the vehicle, which may result in a delay in taking action to avoid the danger.

[0005] Therefore, an object of the present disclosure is to provide an alarm device and an alarm system that can quickly recognize objects that require caution. [Means for solving the problem]

[0006] In one aspect, the following solution is provided. An alarm device that is worn by a worker working at a construction site and alerts the worker to the approach of an object that requires caution, a communication unit that receives information about the object; a position sensor for detecting the position of the notification device; a geomagnetic sensor that detects the direction in which the notification device is facing; a notification unit that notifies the worker of the approach of the object, The information notified to the worker by the notification unit includes relative direction information of the object approaching the worker. [Effects of the Invention]

[0007] According to the present disclosure, workers can quickly recognize objects that require caution. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a block diagram showing a configuration of a notification system according to an embodiment of the present invention; [Figure 2] FIG. 1 is a diagram illustrating a first example of use of the notification system. [Figure 3] 10 is a flowchart showing a processing procedure of a management device in a first example of use. [Figure 4] FIG. 10 is a diagram illustrating a second example of use of the notification system. [Figure 5] 10 is a flowchart showing a processing procedure of a management device in a second use example. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings.

[0010] <Notification system> FIG. 1 is a block diagram showing the configuration of a notification system S of this embodiment. 1, the notification system S of this embodiment includes a detection device 1, a notification device 2, and a management device 3. There may be one detection device 1 and one notification device 2 associated with one management device 3, or two or more detection devices 1 and two or more notification devices 2 associated with one management device 3.

[0011] <Detection device> As shown in FIG. 1, the detection device 1 includes a proximity sensor 11, a position sensor (first position sensor) 12, and a communication unit (first communication unit) 13.

[0012] The proximity sensor 11 is a sensor module that detects the approach of an object to be guarded against, and for example, a distance sensor that detects the distance to the object to be guarded against is used. Distance sensors come in various types, such as laser type, ultrasonic type, and millimeter wave type, and a distance sensor of a type suitable for the detection target is selected.

[0013] The position sensor 12 is a positioning module that detects the position of the detection device 1, and identifies the position of the detection device 1 by receiving a positioning signal such as a GPS (Global Positioning System).

[0014] The communication unit 13 is a communication module capable of communicating with the management device 3, and performs wireless communication with the management device 3 using a communication method such as Bluetooth (registered trademark). Then, the detection information of the proximity sensor 11 and the position sensor 12 is transmitted from the communication unit 13 to the management device 3.

[0015] <Alarm device> 1, the alarm device 2 includes a position sensor (second position sensor) 21, a geomagnetic sensor 22, an alarm unit 23, and a communication unit (second communication unit) 24 that receives information about the object. The alarm device 2 of this embodiment has the form of a helmet that can be worn on the head of a worker, but the form of the alarm device 2 is not limited to this.

[0016] The position sensor 21 is a positioning module that detects the position of the notification device 2, and identifies the position of the notification device 2 by receiving a positioning signal such as a GPS.

[0017] The geomagnetic sensor 22 is a sensor module that detects the direction in which the alarm device 2 is facing. Since the alarm device 2 of this embodiment is in the form of a helmet that is worn by a worker so as to face a specific direction relative to the worker's head, the detection information from the geomagnetic sensor 22 can identify not only the direction in which the alarm device 2 is facing, but also the direction in which the worker wearing the alarm device 2 is facing.

[0018] The notification unit 23 is a notification module that notifies the worker wearing the notification device 2 of information, for example, by sound, light, vibration, etc. The information notified by the notification unit 23 includes relative direction information of the object approaching the worker. For example, the worker is notified of the approach of an object by a voice message such as "A vehicle is approaching from the rear right. Please be on guard."

[0019] The communication unit 24 is a communication module capable of communicating with the management device 3, and performs wireless communication with the management device 3 using a communication method such as Bluetooth (registered trademark). The detection information of the position sensor 21 and the geomagnetic sensor 22 is transmitted from the communication unit 24 to the management device 3. The communication unit 24 also receives a notification request from the management device 3, and the notification unit 23 notifies the worker of the information included in the notification request based on the notification request received by the communication unit 24.

[0020] <Management device> 1, the management device 3 includes a communication unit (third communication unit) 31 and a control unit 32. For example, the management device 3 in this embodiment is a smartphone on which a dedicated app (application for notifying approaching objects) is installed, and is installed at any location on the construction site. When the notification system S is operated, the dedicated app is started on the management device 3, and then communication with the detection device 1 and the notification device 2 is established.

[0021] The communication unit 31 is capable of communicating with the detection device 1 and the notification device 2, and performs wireless communication with the detection device 1 and the notification device 2 using a communication method such as Bluetooth (registered trademark).

[0022] The control unit 32 determines the approach of an object that requires vigilance based on the detection information received from the detection device 1 and the alarm device 2, and calculates the relative direction in which the object is approaching relative to the worker (alarm device 2). When the distance between the object that requires vigilance and the worker falls below a predetermined threshold, the control unit 32 transmits an alarm request to the corresponding alarm device 2, which includes information to be notified to the worker. This information includes information about the relative direction in which the object is approaching relative to the worker (alarm device 2).

[0023] Two examples of use of the notification system S and the processing procedures of the control unit 32 in each example of use will be described below with reference to FIGS.

[0024] <First use example> FIG. 2 is a diagram showing a first example of use of the notification system S. As shown in FIG. As shown in Fig. 2, in a first use example of the alarm system S, a detection device 1 is attached to the top of one of multiple pylons (cones) P that are installed around a construction site and that is installed in a position where vehicle B is likely to enter. In this case, if the detection area of ​​the approach sensor 11 has directionality, the orientation of the detection device 1 is adjusted so that the detection area of ​​the approach sensor 11 faces the expected entry route of vehicle B.

[0025] The alarm device 2 is worn on the head of the worker A. Since the direction in which the alarm device 2 is worn relative to the worker A is unique, the geomagnetic sensor 22 of the alarm device 2 can detect the direction D2 in which the worker A is facing.

[0026] The management device 3 starts up a dedicated application, establishes communication with the detection device 1 and the notification device 2, and then is installed at an arbitrary location on the construction site.

[0027] FIG. 3 is a flowchart showing the processing procedure of the management device 3 in the first use example. 3 illustrates the processing procedure (steps S11 to S16) when there is one notification device 2, but when there are multiple notification devices 2, the processing of steps S14 to S16 can be executed for each notification device 2.

[0028] 3, the management device 3 acquires the detection information from the detection device 1 and the detection information from the notification device 2 (S11, S12), and then determines whether the distance L1 between the vehicle B and the detection device 1 is equal to or less than the threshold value T1 based on the detection information from the proximity sensor 11 (S13). If the determination result in step S13 is NO, the management device 3 returns to the upper routine.

[0029] If the determination result in step S13 is YES, the management device 3 calculates the direction D1 of the line S1 connecting the position of the detection device 1 and the position of the notification device 2 (S14). The direction D1 can be calculated from the latitude and longitude of the detection device 1 detected by the position sensor 12 and the latitude and longitude of the notification device 2 detected by the position sensor 21.

[0030] After calculating the direction D1, the management device 3 calculates a relative direction D3 of the direction D1 with respect to the direction D2 in which the alarm device 2 is facing (S15). In other words, the direction D3 is the relative direction in which the vehicle B is approaching the worker A.

[0031] After calculating the direction D3, the management device 3 transmits a notification request including information about the direction D3 to the notification device 2 (S16). Then, upon receiving the notification request, the notification device 2 notifies the worker of information including the direction D3. For example, the notification device 2 may notify the worker of the approach of vehicle B and the direction D3 by issuing a voice message such as "A vehicle is approaching from the rear right. Please be on guard."

[0032] According to such an example of use of the notification system S, it is possible to notify the worker A not only of the approach of the vehicle B but also of the relative direction D3 from which the vehicle B is approaching the worker A. Therefore, the worker A can be made to quickly recognize the approaching vehicle B and can be encouraged to take appropriate action to avoid danger.

[0033] <Second example of use> FIG. 4 is a diagram showing a second example of use of the notification system S. In FIG. As shown in FIG. 4, in a second example of use of the notification system S, the detection device 1 is mounted on a construction vehicle C.

[0034] The alarm device 2 is worn on the head of the worker A. Since the direction in which the alarm device 2 is worn relative to the worker A is unique, the geomagnetic sensor 22 of the alarm device 2 can detect the direction D2 in which the worker A is facing.

[0035] The management device 3 starts up a dedicated application, establishes communication with the detection device 1 and the notification device 2, and then is installed at an arbitrary location on the construction site.

[0036] FIG. 5 is a flowchart showing the processing procedure of the management device 3 in the second use example. 5 illustrates the processing procedure (steps S21 to S26) when there is one notification device 2, but when there are multiple notification devices 2, the processing of steps S23 to S26 can be executed for each notification device 2. In the second usage example, the distance L2 between the construction vehicle C and worker A is calculated based on the position information of the detection device 1 and the notification device 2, but it is also possible to set the detection target of the proximity sensor 11 as worker A and specify L2 based on the detection information of the proximity sensor 11.

[0037] 5, the management device 3 acquires the detection information of the detection device 1 and the detection information of the notification device 2 (S21, S22), and then determines whether the distance L2 between the detection device 1 and the notification device 2 is equal to or less than the threshold T2 based on the position information of the detection device 1 and the notification device 2 (S23). If the determination result in step S23 is NO, the management device 3 returns to the upper routine.

[0038] If the determination result in step S23 is YES, the management device 3 calculates a direction D4 of the line S2 connecting the position of the detection device 1 and the position of the notification device 2 (S24). The direction D4 can be calculated from the latitude and longitude of the detection device 1 detected by the position sensor 12 and the latitude and longitude of the notification device 2 detected by the position sensor 21.

[0039] After calculating the direction D4, the management device 3 calculates a relative direction D5 of the direction D4 with respect to the direction D2 in which the alarm device 2 is facing (S25). In other words, the direction D5 is the relative direction in which the vehicle C is approaching the worker A.

[0040] After calculating direction D5, the management device 3 transmits a notification request including information about direction D5 to the notification device 2 (S26). Then, upon receiving the notification request, the notification device 2 notifies the worker of information including direction D5. For example, the notification device 2 may notify the worker of the approach of vehicle C and direction D5 by issuing a voice message such as "A work vehicle is approaching from the left. Please be on guard."

[0041] According to such an example of use of the notification system S, it is possible to notify the worker A not only of the approach of the construction vehicle C but also of the relative direction D5 from which the construction vehicle C is approaching the worker A. Therefore, it is possible to make the worker A quickly aware of the approaching construction vehicle C and encourage the worker A to take appropriate action to avoid danger.

[0042] Although the embodiments have been described in detail above, the present invention is not limited to the specific embodiments, and various modifications and changes are possible within the scope of the claims. In addition, it is also possible to combine all or a plurality of components of the above-described embodiments. [Explanation of symbols]

[0043] S Notification System 1. Detection device 11 Proximity Sensor 12 Position sensor (first position sensor) 13 Communication unit (first communication unit) 2. Alarm device 21 Position sensor (second position sensor) 22 Geomagnetic sensor 23 Information Department 24 Communications Department (Second Communications Department) 3 Management device 31 Communications Department (Third Communications Department) 32 Control section Worker A B vehicle C Construction vehicle P pylon

Claims

1. An alarm device that is worn by a worker working at a construction site and alerts the worker to the approach of an object that requires caution, a communication unit that receives information about the object; a position sensor for detecting the position of the notification device; a geomagnetic sensor that detects the direction in which the notification device is facing; a notification unit that notifies the worker of the approach of the object, The information notified to the worker from the notification unit includes relative direction information of the object approaching the worker.

2. The notification device according to claim 1 , wherein the notification device has a form of a helmet that can be worn on the head of the worker.

3. An alarm system that notifies workers working at a construction site of the approach of an object that requires caution, A detection device installed at or near the construction site; an alarm device worn by the worker; a management device capable of communicating with the detection device and the notification device, The detection device includes: a proximity sensor that detects the approach of the object; a first position sensor for detecting a position of the detection device; a first communication unit that transmits detection information from the proximity sensor and the first position sensor to the management device; The notification device a second position sensor for detecting the position of the notification device; a geomagnetic sensor that detects the direction in which the notification device is facing; a notification unit that notifies the worker of the approach of the object; a second communication unit that transmits detection information from the second position sensor and the geomagnetic sensor to the management device and receives notification information to be notified to the operator from the management device, The management device a third communication unit that receives the detection information from the detection device and the notification device and transmits the notification information to the notification device; a control unit that calculates a relative direction in which the object is approaching the worker based on detection information from the proximity sensor, the first position sensor, the second position sensor, and the geomagnetic sensor, The notification system, wherein the notification information includes relative direction information of the object approaching the worker.

4. An alarm system that notifies workers working at a construction site of the approach of a construction vehicle, A detection device attached to the construction vehicle; an alarm device worn by the worker; a management device capable of communicating with the detection device and the notification device, The detection device includes: a first position sensor for detecting a position of the detection device; a first communication unit that transmits detection information of the first position sensor to the management device; The notification device a second position sensor for detecting the position of the notification device; a geomagnetic sensor that detects the direction in which the notification device is facing; A notification unit that notifies the worker of the approach of the construction vehicle; a second communication unit that transmits detection information from the second position sensor and the geomagnetic sensor to the management device and receives notification information to be notified to the operator from the management device, The management device a third communication unit that receives the detection information from the detection device and the notification device and transmits the notification information to the notification device; a control unit that calculates a relative direction in which the construction vehicle is approaching the worker based on detection information from the first position sensor, the second position sensor, and the geomagnetic sensor, The notification system includes information on the relative direction in which the construction vehicle is approaching the worker, in the notification information.

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