Alarm system

Abstract

To provide an alarm system capable of adequately recognizing how serious an alarm is.SOLUTION: The present invention relates to an alarm system S that comprises a detection unit 1 installed in a construction site to detect a vehicle A, a management terminal 3 for acquiring detection information of the detection unit 1, and an alarm unit 2 worn by a worker working in the construction site and generating an alarm at an alarm request from the management terminal 3, wherein the management terminal 3 specifies an alarm-required area D based upon the information received from the detection unit 1, and transmits the alarm request to only an alarm unit 2 located in the alarm-required area D.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to alarm systems. [Background technology]

[0002] BACKGROUND ART Conventionally, an alarm system has been proposed that detects a vehicle entering a construction site and issues an alarm to workers at the construction site (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, when a vehicle entering a construction site is detected, an alarm is issued to the entire construction site, making it difficult to recognize the degree of danger of the alarm.

[0005] Therefore, an object of the present disclosure is to provide an alarm system that can appropriately recognize the degree of danger of an alarm. [Means for solving the problem]

[0006] In one aspect, the following solution is provided. a detection unit that is installed at a construction site and detects vehicles; a management terminal that acquires the detection information of the detection unit; an alarm unit worn by a worker working at a construction site and which issues an alarm in response to an alarm request from the management terminal, The detection unit a communication unit that communicates with the management terminal; a position detection unit that detects its own position; a distance detection unit that detects the distance to the vehicle; a control unit that transmits information including the detected position of the vehicle and the distance to the vehicle to the management terminal; The alarm unit a communication unit that communicates with the management terminal; a position detection unit that detects its own position; an alarm unit that issues an alarm to the worker; a control unit that transmits information including the detected location of the device to the management terminal and activates the alarm unit when the device receives the alarm request from the management terminal; The management terminal a communication unit that communicates with the detection unit and the alarm unit; and a control unit that identifies an area requiring warning based on information received from the detection unit and transmits the warning request to the warning unit within the area requiring warning. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide an alarm system that can appropriately recognize the degree of danger of an alarm. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a block diagram showing the configuration of an alarm system according to an embodiment of the present invention; [Figure 2] 1 is a diagram showing a state in which the alarm system of the present embodiment is used (when alarming for vehicle intrusion by distance detection); [Figure 3] 1 is a diagram showing a state in which the alarm system of the present embodiment is used (when a vehicle intrusion alarm is issued upon collision detection); [Figure 4] FIG. 2 is a diagram showing the state of use of the alarm system of the present embodiment (when excluding an alarm). [Figure 5] 10 is a flowchart showing a processing procedure of a management terminal. DETAILED DESCRIPTION OF THE INVENTION

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

[0010] <Alarm System> 1 to 4, an alarm system S according to an embodiment of the present invention functions as a vehicle intrusion alarm system that alerts a worker B to the intrusion of a vehicle A at a construction site such as a road. For example, the alarm system S of this embodiment includes a detection unit 1 that detects the intrusion of a vehicle A, an alarm unit 2 worn by the worker B, and a management terminal 3 that transmits an alarm request to the alarm unit 2 based on information acquired from the detection unit 1.

[0011] <Detection unit> 1, the detection unit 1 includes a communication unit (first communication unit) 11, a position detection unit (first position detection unit) 12, a distance detection unit 13, a collision detection unit 14, a control unit (first control unit) 15, and a battery 16. The detection unit 1 of this embodiment is attached to the top of a cone C that is installed to surround a construction site, as shown in FIGS.

[0012] The communication unit 11 is a communication module capable of communicating with the management terminal 3, and performs wireless communication with the management terminal 3 using a communication method such as Bluetooth (registered trademark).

[0013] The position detection unit 12 is a positioning module that detects its own position, and receives a positioning signal such as a GPS (Global Positioning System) to identify its own position.

[0014] The distance detection unit 13 is a sensor module that detects at least the distance to the vehicle A, and uses, for example, a laser-based, ultrasonic-based, or millimeter-wave-based distance sensor.

[0015] The collision detection unit 14 is a sensor module that detects the collision of vehicle A with the detection unit 1 or cone C, and for example, an IMU (Inertial Maesurement Unit) is used that detects the change in posture of the detection unit 1 (cone C) due to the collision of vehicle A.

[0016] The control unit 15 is a control module such as a microcomputer, and acquires position information detected by the position detection unit 12, distance information detected by the distance detection unit 13, collision information detected by the collision detection unit 14, etc., and transmits them to the management terminal 3.

[0017] The battery 16 is, for example, a dry cell, and supplies power to the communication unit 11, the position detection unit 12, the distance detection unit 13, the collision detection unit 14, and the control unit 15.

[0018] <Alarm unit> 1, the alarm unit 2 includes a communication unit (second communication unit) 21, a position detection unit (second position detection unit) 22, a fall detection unit 23, an alarm unit 24, a control unit (second control unit) 25, and a battery 26. As shown in FIGS. 2 to 4, the alarm unit 2 of this embodiment has a helmet shape that can be worn on the head of a worker B.

[0019] The communication unit 21 is a communication module capable of communicating with the management terminal 3, and performs wireless communication with the management terminal 3 using a communication method such as Bluetooth (registered trademark).

[0020] The position detection unit 22 is a positioning module that detects its own position, and receives a positioning signal such as a GPS to identify its own position.

[0021] The fall detection unit 23 is a sensor module that detects a fall of the worker B, and for example, an IMU that detects a change in the posture of the alarm unit 2 when the worker B falls is used.

[0022] The alarm unit 24 is an alarm module that issues an alarm to the worker B, for example, by sound, light, vibration, or the like.

[0023] The control unit 25 is a control module such as a microcomputer, and acquires the position information detected by the position detection unit 22, the fall information detected by the fall detection unit 23, and the like, and transmits them to the management terminal 3. In addition, when the control unit 25 receives an alarm request from the management terminal 3, it activates the alarm unit 24.

[0024] The battery 26 is, for example, a dry cell, and supplies power to the communication unit 21, the position detection unit 22, the fall detection unit 23, the alarm unit 24, and the control unit 25.

[0025] <Administrative terminal> 1, the management terminal 3 includes a communication unit (third communication unit) 31 and a control unit (third control unit) 32. For example, the management terminal 3 in this embodiment is a smartphone on which a dedicated app (a vehicle intrusion alarm application) is installed, and is installed at a predetermined location on the construction site. When the alarm system S is to be operated, the dedicated app is started on the management terminal 3, and then communication with the detection unit 1 and the alarm unit 2 is established.

[0026] The communication unit 31 is capable of communicating with the detection unit 1 and the alarm unit 2, and performs wireless communication with the detection unit 1 and the alarm unit 2 using a communication method such as Bluetooth (registered trademark).

[0027] The control unit 32 identifies an alarm required area D (see FIGS. 2 to 4) based on the information received from the detection unit 1. For example, the control unit 32 in this embodiment calculates the position, speed, and traveling direction of vehicle A based on the position information of the detection unit 1 and the distance information from vehicle A, and identifies the alarm required area D based on the calculation results.

[0028] The position of vehicle A may be calculated based on information received from one detection unit 1, but in a situation where multiple detection units 1 are detecting vehicle A, it is desirable to calculate based on information received from the multiple detection units 1. This makes it possible to identify the position of vehicle A with high accuracy. In addition, the speed and traveling direction of vehicle A can be identified, for example, from changes over time in the calculated vehicle position.

[0029] As shown in Figure 2, the control unit 32 predicts the entry route E of vehicle A based on the calculated position, speed, and direction of travel of vehicle A, and identifies the area within the construction site that includes the predicted entry route E as an area requiring warning D, and designates other areas within the construction site as non-alert areas F.

[0030] The control unit 32 identifies an alarm unit 2 within the alarm required area D based on the position information of the alarm unit 2, and transmits an alarm request (first alarm request) to the identified alarm unit 2. The alarm unit 2 that receives the alarm request activates the alarm unit 24 and issues an alarm to worker B who is wearing the alarm unit 2. For example, the alarm unit 2 flashes its light and outputs a voice message such as "A vehicle is entering, please be on guard."

[0031] According to this alarm system S, when the detection unit 1 detects a vehicle A that may be entering the construction site, it identifies a high-risk alarm area D and activates an alarm only on the alarm units 2 within the alarm area D, allowing the worker B to properly recognize the level of danger of the alarm. This prevents the worker B from becoming accustomed to the alarms and encourages him to take prompt action to avoid danger.

[0032] Furthermore, when the control unit 32 receives collision information of vehicle A from the detection unit 1, it can identify an alarm required area D based on the position information of the detection unit 1. For example, as shown in Fig. 3, the control unit 32 predicts an intrusion path E of vehicle A based on the position information of the detection unit 1 with which vehicle A collided, and identifies an area within the construction site that includes the predicted intrusion path E as an alarm required area D. In this way, even if the distance detection unit 13 of the detection unit 1 cannot detect vehicle A, the alarm required area D can be appropriately identified and the alarm unit 2 within the alarm required area D can be made to issue an alarm.

[0033] Furthermore, the control unit 32 can exclude even an alarm unit 2 within the alarm required area D from the targets of the alarm if predetermined conditions are met. For example, as shown in FIG. 4, if there is an alarm unit 2 that is located within the alarm required area D but does not move from the area D even after a predetermined time has passed, the control unit 32 excludes it from the targets of the alarm and stops the alarm operation. In this way, it is possible to prevent unnecessary alarms from being issued to worker B who is working within the alarm required area D while recognizing that it is in the alarm required area D, and reduce the discomfort of worker B caused by unnecessary alarms.

[0034] Furthermore, when the control unit 32 receives the fall information from the alarm unit 2, it identifies the area surrounding the fallen worker B and transmits a second alarm request to the alarm units 2 in that area. When the alarm unit 2 receives the second alarm request, it flashes its light and outputs a voice message such as "A nearby worker has fallen." This notifies the surrounding workers B that worker B has fallen, and urges them to take prompt action.

[0035] The processing procedure of the management terminal 3 that realizes the above-described alarm system S will be described below with reference to Fig. 5. However, among the processing procedures of the management terminal 3, only the procedure for the vehicle intrusion alarm processing will be described, and explanations of the procedures for the alarm exclusion processing and the fall alarm processing will be omitted.

[0036] <Processing procedure for management terminal> 5, the management terminal 3 executes a process for acquiring information from the detection unit 1 (S1) and a process for acquiring information from the alarm unit 2 (S2), and then determines whether the detection unit 1 has detected vehicle A (S3). If the determination result in step S3 is NO, the management terminal 3 returns to the upper routine. If the determination result in step S3 is YES, the management terminal 3 identifies an alarm required area D based on the information from the detection unit 1 (S4), and then transmits an alarm request to the alarm unit 2 within the alarm required area D (S5).

[0037] 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]

[0038] S Alarm System 1 detection unit 11 Communications Department 12 Position detection unit 13 Distance detection unit 14 Collision detection unit 15 Control Unit 16 Battery 2 alarm units 21 Communications Department 22 Position detection unit 23 Fall detection unit 24 Alarm section 25 Control Unit 26 Battery 3 Management terminal 31 Communications Department 32 Control section

Claims

1. a detection unit that is installed at a construction site and detects vehicles; a management terminal that acquires the detection information of the detection unit; an alarm unit worn by a worker working at a construction site and which issues an alarm in response to an alarm request from the management terminal, The detection unit a communication unit that communicates with the management terminal; a position detection unit that detects its own position; a distance detection unit that detects the distance to the vehicle; a control unit that transmits information including the detected position of the vehicle and the distance to the vehicle to the management terminal; The alarm unit a communication unit that communicates with the management terminal; a position detection unit that detects its own position; an alarm unit that issues an alarm to the worker; a control unit that transmits information including the detected location of the device to the management terminal and activates the alarm unit when the device receives the alarm request from the management terminal; The management terminal a communication unit that communicates with the detection unit and the alarm unit; a control unit that identifies an area requiring warning based on information received from the detection unit and transmits the warning request to the warning unit within the area requiring warning.

2. 2. The warning system according to claim 1, wherein the control unit of the management terminal calculates the position, speed, and direction of travel of the vehicle based on the information received from the detection unit, and identifies the warning area based on the calculation results.

3. the detection unit further includes a collision detection unit that detects a vehicle collision; 2. The alarm system according to claim 1, wherein the control unit of the detection unit transmits information including the detected position of the detection unit, the distance to the vehicle, and whether or not the vehicle has collided with the detection unit to the management terminal.

4. 2. The alarm system according to claim 1, wherein the control unit of the management terminal excludes the alarm unit from being the target of an alarm even if the alarm unit is within the required alarm area, if a predetermined condition is satisfied.

5. The alarm unit further includes a fall detection unit that detects a fall of the worker, The control unit of the alarm unit transmits information about the worker's fall to the management terminal, 2. The alarm system according to claim 1, wherein the control unit of the management terminal, when receiving the fall information from the alarm unit, identifies the surrounding area of ​​the fallen worker and transmits the alarm request to the alarm unit within the surrounding area.

6. The alarm system according to claim 1 , wherein the alarm unit has a helmet shape that can be worn on the head of the worker.

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