Safety assurance device, safety assurance method, and program

Abstract

To ensure the safety of workers at a waste treatment facility while reducing the workload caused by the work of checking whether safety is ensured through automation. [Solution] A safety device 1 in a waste disposal facility 100, comprising an entry prevention device 4 capable of restricting a worker's entry into the area R in front of the waste inlet opposite a waste inlet 102 connected to a waste pit 105, and a control unit that controls the entry prevention device 4, wherein when the control unit determines that the worker is not wearing a smart safety belt 2, it causes the entry prevention device 4 to restrict the worker's entry into the area R in front of the inlet, and when it is determined that the worker is wearing the smart safety belt 2, it causes the entry prevention device 4 to allow the worker to enter the area R in front of the inlet, with at least one of the conditions being that it has been determined that the worker is wearing the smart safety belt 2.

Description

[Technical Field]

[0001] The present invention relates to a safety ensuring device, a safety ensuring method, and a program. [Background technology]

[0002] For example, Patent Document 1 discloses a garbage pit fall warning device that can warn of the risk of people falling into a garbage pit on a platform at a garbage disposal facility. The garbage pit fall warning device in Patent Document 1 extracts a human presence area where people exist from an image captured from above the platform, and issues a warning based on the human presence area. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7122439 Summary of the Invention [Problem to be solved by the invention]

[0004] Waste is delivered to waste incineration facilities and waste recycling facilities (hereinafter referred to as waste treatment facilities) by, for example, a compactor truck. The compactor truck is parked facing the waste inlet of a waste pit and deposits waste into the inlet. The workers who occupy the compactor truck may visually check whether any waste remains in the compactor truck or remove any waste remaining in the truck just before the waste inlet. To prevent such workers from falling into the waste pit, workers are required to wear fall prevention equipment (hereinafter referred to as fall prevention equipment), such as a safety belt. However, the waste pit fall warning device in Patent Document 1 cannot determine whether workers are wearing fall prevention equipment or prevent workers who do not notice the warning from approaching the waste inlet. Therefore, employees of the waste treatment facility must ensure that workers' safety is ensured, such as by wearing fall prevention equipment, which increases the workload of employees of the waste treatment facility.

[0005] The present invention has been made in consideration of the above-mentioned problems, and aims to ensure the safety of workers at waste disposal facilities while reducing the workload caused by the work of checking whether safety is ensured through automation. [Means for solving the problem]

[0006] The present invention employs the following configuration as a means for solving the above problems.

[0007] A first aspect of the present invention is a safety device for use in a waste disposal facility, comprising an entry prevention device capable of restricting a worker from entering an area in front of a waste inlet opposite a waste inlet connected to a waste pit, and a control unit that controls the entry prevention device.When the control unit determines that the worker is not wearing fall prevention equipment, the control unit causes the entry prevention device to restrict the worker from entering the area in front of the inlet, and when the control unit determines that the worker has already worn the fall prevention equipment, the control unit causes the entry prevention device to allow the worker to enter the area in front of the inlet, with at least one of the conditions being that the control unit has determined that the worker has already worn the fall prevention equipment.

[0008] According to the first aspect of the present invention, the control unit determines whether the worker is wearing a fall prevention device or not. Furthermore, if the worker is not wearing a fall prevention device, the control unit controls the entry prevention device to restrict the worker from entering the area in front of the drop opening. In other words, according to the first aspect of the present invention, if the worker is not wearing a fall prevention device, the worker cannot enter the area in front of the drop opening. Therefore, according to the first aspect of the present invention, it is possible to reduce the visual safety confirmation work by employees of a waste disposal facility, for example, and it is possible to ensure the safety of workers at a waste disposal facility while reducing the workload caused by the work of confirming whether safety is ensured by automation.

[0009] A second aspect of the present invention is a configuration in which, in the first aspect, an imaging device is provided that can capture an image of the worker, and the control unit determines whether the worker has worn the fall prevention device or not based on image data input from the imaging device.

[0010] According to the second aspect of the present invention, it is determined whether a worker has worn a fall prevention device or not based on image data obtained by an imaging device. That is, according to the second aspect of the present invention, it is possible to determine by image processing whether a worker has worn a fall prevention device or not, and it is possible to easily and reliably determine the wearing status of the fall prevention device.

[0011] A third aspect of the present invention is the same as the second aspect, in which a pattern for determining whether the fall prevention device is worn is attached to the fall prevention device, and the control unit determines that the worker has worn the fall prevention device when the pattern for determining whether the fall prevention device is worn is extracted from the image data.

[0012] According to the third aspect of the present invention, when performing image processing, it is only necessary to extract a known pattern for use in wearing determination, thereby reducing the processing load on the control unit due to image processing.

[0013] A fourth aspect of the present invention is a configuration in which, in any of the first to third aspects, the fall prevention device comprises an attachment section worn by the worker, a hook section connected to the attachment section, and a signal output section that detects that the hook section has been attached to an external member and outputs a hook section attached signal, and when the control section determines that the worker has worn the fall prevention device and the hook section attached signal is input from the signal output section of the fall prevention device, the control section causes the entry prevention device to allow the worker to enter the area in front of the drop-in opening.

[0014] According to a fourth aspect of the present invention, the control unit permits the worker to enter the area in front of the drop slot when the following conditions are met: the worker has already worn the fall prevention device, and the hook portion of the fall prevention device has been attached to an external member. Therefore, according to the fourth aspect of the present invention, it is possible to prevent a worker from entering the area in front of the drop slot after wearing the fall prevention device but forgetting to attach the hook portion to the external member.

[0015] A fifth aspect of the present invention is a configuration in which, in the fourth aspect, the entry prevention device comprises a fence portion which is the external member to which the hook portion of the fall prevention device can be attached, and a bar member attached to the fence portion in a state that can be changed, and the bar member is state-changeable between an entry restriction state that restricts the worker from entering the area in front of the drop opening, and an entry permission state that allows the worker to enter the area in front of the drop opening.

[0016] According to the fifth aspect of the present invention, by changing the state of the bar member between an entry restriction state and an entry permission state, it is possible to easily switch between a state that restricts entry of workers into the area in front of the input port and a state that allows entry of workers into the area in front of the input port.

[0017] A sixth aspect of the present invention is the first aspect, wherein the fence portion has a mounting frame portion that is movable with the hook portion attached thereto.

[0018] According to the sixth aspect of the present invention, the worker can move around with the hook portion attached to the fence portion, which reduces the workload on the worker.

[0019] A seventh aspect of the present invention is the fifth or sixth aspect, wherein the bar member is a balloon-type bar member that is brought into the entry-restricted state by supplying gas therein.

[0020] According to the seventh aspect of the present invention, the bar members can be brought into contact with the vehicle, which makes it easier to control the state of the bar members compared to when the state of the bar members is changed within a range where they do not come into contact with the vehicle.

[0021] An eighth aspect of the present invention is a configuration in which, in any of the fifth to seventh aspects, the control unit acquires the shape of a vehicle parked opposite the garbage drop-in port based on image data, and controls the intrusion prevention device based on the shape of the vehicle so that the bar member does not come into contact with the vehicle.

[0022] According to the eighth aspect of the present invention, by performing image processing, it is possible to easily prevent the bar member from coming into contact with the vehicle.

[0023] A ninth aspect of the present invention, in any one of the first to eighth aspects, employs a configuration further comprising a notification device capable of notifying the worker of information based on the control of the control unit.

[0024] According to the ninth aspect of the present invention, various information can be provided to the worker. For example, the location of the vehicle and the status of the fall prevention device being determined can be provided to the worker.

[0025] A tenth aspect of the present invention is the ninth aspect, wherein the alarm device is a display device capable of superimposing at least a portion of a vehicle parked opposite the garbage drop-off opening and the position where the vehicle should stop.

[0026] According to the tenth aspect of the present invention, it is possible to adjust the position of the vehicle while visually checking the actual vehicle position displayed on the display device and the position where the vehicle should stop. Therefore, according to the tenth aspect of the present invention, adjustment of the vehicle position becomes easy.

[0027] An eleventh aspect of the present invention is the tenth aspect, wherein the control unit detects the difference between the position of the vehicle and the position where the vehicle should stop, and causes the display device to display a warning if the difference exceeds a preset tolerance range.

[0028] According to the eleventh aspect of the present invention, it is possible for an operator to easily recognize a large difference between the actual vehicle position and the position where the vehicle should be stopped. Therefore, according to the eleventh aspect of the present invention, it is possible to more reliably adjust the position of the vehicle.

[0029] A twelfth aspect of the present invention, in the tenth or eleventh aspect, employs a configuration in which the display device comprises a projector that projects information in front of the vehicle.

[0030] According to the twelfth aspect of the present invention, by projecting information in front of the vehicle, it is possible to provide information to a worker who is riding in the vehicle. Therefore, according to the twelfth aspect of the present invention, it is possible to provide information to a worker who is driving a vehicle, for example, while driving.

[0031] A thirteenth aspect of the present invention, in any one of the tenth to twelfth aspects, employs a configuration in which the display device comprises a monitor disposed in front of the intrusion prevention device.

[0032] According to the thirteenth aspect of the present invention, information can be easily provided to an operator standing in front of the intrusion prevention device via a monitor. Therefore, according to the thirteenth aspect of the present invention, for example, the reason why the operator's entry into the area in front of the inlet is restricted can be easily provided to the operator standing in front of the intrusion prevention device.

[0033] A 14th aspect of the present invention is a configuration in which, in any of the 1st to 13th aspects, a fall prevention opening and closing fence device is installed at the boundary between the garbage inlet and the area in front of the inlet, and the opening degree of which can be adjusted based on the control of the control unit.

[0034] According to the fourteenth aspect of the present invention, a fall prevention opening / closing fence device can prevent workers from accidentally stepping into the garbage inlet. Although properly wearing the fall prevention device can prevent workers from falling into the garbage pit, there is a risk of workers falling if they step into the garbage inlet. According to the fourteenth aspect of the present invention, such workers can also be prevented from falling.

[0035] The 15th aspect of the present invention is the 14th aspect, wherein the fall prevention opening / closing fence device is configured to be fully open when a vehicle moves from outside the area in front of the drop-in opening toward the area in front of the drop-in opening, to be half open so as to block the space between the vehicle and the device when the vehicle stops in the area in front of the drop-in opening, and to be fully closed when the vehicle moves from the area in front of the drop-in opening to outside the area in front of the drop-in opening.

[0036] According to the fifteenth aspect of the present invention, when a vehicle approaches a garbage inlet, interference between the vehicle and the fall-prevention opening / closing fence device can be prevented.

[0037] The 16th aspect of the present invention, in the 14th or 15th aspect, adopts a configuration in which the fall prevention opening and closing fence device is provided with a pair of accordion doors that can be opened and closed by sliding, and a drive unit that slides the accordion doors.

[0038] According to the sixteenth aspect of the present invention, the pair of accordion doors can be slid by controlling the drive unit. Therefore, according to the sixteenth aspect of the present invention, the fall prevention opening / closing fence device can be easily changed to a fully open state, a half-open state, and a fully closed state.

[0039] A 17th aspect of the present invention is a method for ensuring safety in a waste disposal facility, which is configured to restrict the worker from entering the area in front of the drop-in opening when a control unit determines that the worker is not wearing fall prevention equipment, and to allow the worker to enter the area in front of the drop-in opening when at least one of the conditions is that the control unit determines that the worker has worn the fall prevention equipment.

[0040] According to a seventeenth aspect of the present invention, a control unit determines whether a worker is wearing a fall prevention device or not. Furthermore, if the worker is not wearing a fall prevention device, the control unit restricts the worker from entering the area in front of the drop opening. In other words, according to the seventeenth aspect of the present invention, if the worker is not wearing a fall prevention device, the worker cannot enter the area in front of the drop opening. Therefore, according to the seventeenth aspect of the present invention, for example, the visual safety confirmation work by employees of a waste disposal facility can be reduced, and while ensuring the safety of workers at a waste disposal facility, the workload incurred by the work of confirming whether safety is ensured by automation can be reduced.

[0041] An 18th aspect of the present invention is a program configured to cause a computer to execute the steps of determining whether a worker is wearing or has not worn fall prevention equipment, controlling an entry prevention device so as to restrict the worker from entering the area in front of the input port if it is determined that the worker is not wearing the fall prevention equipment, and controlling the entry prevention device so as to allow the worker to enter the area in front of the input port if it is determined that the worker is wearing the fall prevention equipment.

[0042] According to an eighteenth aspect of the present invention, a computer determines whether a worker is wearing fall prevention equipment. Furthermore, if the worker is not wearing fall prevention equipment, the computer controls the entry prevention device to restrict the worker from entering the area in front of the drop-in opening. In other words, according to the eighteenth aspect of the present invention, if a worker is not wearing fall prevention equipment, the worker cannot enter the area in front of the drop-in opening. Therefore, according to the eighteenth aspect of the present invention, it is possible to reduce the visual safety confirmation work by employees of, for example, a waste disposal facility, and it is possible to ensure the safety of workers at a waste disposal facility while reducing the workload caused by the work of confirming whether safety is ensured by automation. [Effects of the Invention]

[0043] According to the present invention, the safety of workers at waste treatment facilities can be ensured while reducing the workload caused by the work of checking whether safety is ensured through automation. [Brief explanation of the drawings]

[0044] [Figure 1] 1 is a schematic cross-sectional view showing a part of a waste treatment facility in which a safety device according to one embodiment of the present invention is used. [Figure 2] 1 is a schematic perspective view showing a general configuration of a safety ensuring device according to an embodiment of the present invention; [Figure 3] 1 is a schematic plan view showing a schematic configuration of a safety ensuring device according to an embodiment of the present invention; [Figure 4] 1 is a schematic diagram illustrating the configuration of a smart safety belt provided in a safety ensuring device according to an embodiment of the present invention. [Figure 5] 1 is a block diagram showing a system configuration of a safety ensuring device according to an embodiment of the present invention; [Figure 6] 3 is an image diagram of image data input to a control unit from a camera provided in a safety ensuring device of one embodiment of the present invention. FIG. [Figure 7] This is an image of an image in which the rear wheel, which is part of a compactor truck, and the mark where the rear wheel should be located are superimposed. [Figure 8] This is an image of an image in which the rear wheel, which is part of a compactor truck, and the mark where the rear wheel should be located are superimposed. [Figure 9] This is a flowchart showing the process from when a compactor truck loaded with waste and two workers enters the platform, dumps the waste into a waste pit, and then leaves the platform. DETAILED DESCRIPTION OF THE INVENTION

[0045] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a safety ensuring device, a safety ensuring method, and a program according to the present invention will be described below with reference to the accompanying drawings.

[0046] FIG. 1 is a schematic cross-sectional view showing a part of a waste treatment facility 100 in which the safety ensuring device of this embodiment is used. The waste treatment facility 100 is a facility that accepts waste brought in by vehicles such as a compactor truck X and incinerates or recycles the accepted waste. Note that the vehicle that brings in the waste is not limited to the compactor truck X. For example, it may be an ordinary vehicle owned by a resident living in the administrative district where the waste treatment facility 100 is located. However, in this embodiment, it is described that the waste is brought in by a compactor truck X.

[0047] As shown in Fig. 1, the waste treatment facility 100 includes a platform 101, a waste inlet 102, a waste inlet door 103, a sloped section 104, and a waste pit 105. The platform 101 is an area where a garbage truck X loaded with garbage discharges the garbage from the vehicle, and is formed so that the garbage truck X can travel on it. For example, the platform 101 is formed to be large enough to allow multiple garbage trucks X to travel and park.

[0048] The garbage inlet 102 is an opening that leads to the garbage pit 105. Garbage discharged from the compactor truck X is dumped into the garbage pit 105 through the garbage inlet 102. A plurality of garbage inlets 102 are provided for the platform 101. These garbage inlets 102 are connected to, for example, the same garbage pit 105. In other words, the garbage treatment facility 100 is configured so that no matter which garbage inlet 102 the garbage is dumped into, the garbage is stored in the same garbage pit 105.

[0049] The garbage input door 103 opens and closes the garbage input port 102. For example, the garbage input door 103 automatically opens when a garbage truck X approaches, and automatically closes when the garbage truck X leaves. Such a garbage input door 103 is provided for each garbage input port 102.

[0050] The inclined portion 104 is a portion that connects the garbage inlet 102 to the garbage pit 105, and is provided for each garbage inlet 102. Each inclined portion 104 is inclined downward from the garbage inlet 102 toward the garbage pit 105, and guides garbage put into the garbage inlet 102 toward the garbage pit 105.

[0051] The garbage pit 105 is a portion for temporarily storing garbage thrown into the garbage inlets 102, and is formed by digging deeper downward than each of the garbage inlets 102. For example, the garbage pit 105 is provided with a garbage crane (not shown) that transports the garbage stored in the garbage pit 105. The garbage stored in the garbage pit 105 is transported by the garbage crane to, for example, an incineration facility or a recycling facility.

[0052] As shown in FIG. 1, in such a waste treatment facility 100, a compactor truck X faces the rear of the vehicle toward a waste inlet 102. The compactor truck X then lifts its loading platform, allowing the waste inside the platform to fall naturally, and the waste is then dumped into the waste inlet 102. At this time, a worker who is an occupant of the compactor truck X performs work in an area facing the waste inlet 102. Specifically, the worker performs tasks such as manipulating the loading platform of the compactor truck X, visually checking whether all the waste has fallen from the loading platform of the compactor truck X into the waste inlet 102, and removing any remaining waste from the loading platform. For example, some of the work may be performed with the compactor truck X moved approximately 1 meter forward from the waste dump position (the position shown in FIG. 1). The area facing the waste inlet 102 and where the worker performs work is referred to as the inlet front area R.

[0053] Fig. 2 is a schematic perspective view showing the general configuration of the safety ensuring device 1 of this embodiment. Fig. 3 is a schematic plan view showing the general configuration of the safety ensuring device 1 of this embodiment. As shown in these figures, the safety ensuring device 1 of this embodiment includes a smart safety belt 2 (fall prevention device), a camera 3 (imaging device), an entry prevention device 4, a fall prevention opening / closing fence device 5, a projector 6 (alarm device, display device), and a monitor 7 (alarm device, display device).

[0054] In the following description, for convenience, the direction in front of the driver of the compactor truck X parked facing the garbage inlet 102 is referred to as the front, and the direction behind the driver is referred to as the rear. Also, as viewed from the driver of the compactor truck X parked facing the garbage inlet 102, the right side is referred to as the right, and the left side is referred to as the left.

[0055] Fig. 4 is a schematic diagram of the smart safety belt 2. The smart safety belt 2 is worn by a worker and connects the worker to an external member capable of supporting the worker. As shown in Fig. 4, the smart safety belt 2 includes a waist belt 2a (wearing part), a connecting part 2b, a hook part 2c, and a signal output part 2d.

[0056] The waist belt 2a is a part worn by the worker. The waist belt 2a is worn by wrapping it around the worker's waist. As shown in FIG. 4 , a wearing determination pattern 2e is provided on the waist belt 2a in a position visible from the outside (in this embodiment, on the outer surface of the waist belt 2a). In this embodiment, the wearing determination pattern 2e is a diagonal striped pattern. However, the wearing determination pattern 2e is not limited to a diagonal striped pattern. Such a wearing determination pattern 2e is used when the control unit 8, which will be described later, determines whether the worker is wearing the smart safety belt 2 by image processing. For the control unit 8, the wearing determination pattern 2e is a known pattern stored in advance in a storage unit. Note that the wearing determination pattern 2e is not necessarily required. For example, if the presence or absence of a waist belt 2a without the wearing determination pattern 2e can be determined by image processing, the wearing determination pattern 2e does not need to be provided on the waist belt 2a.

[0057] The connecting part 2b is a string-like member that connects the waist belt 2a and the hook part 2c. The hook part 2c is provided at the tip of the connecting part 2b. In other words, the hook part 2c is connected to the waist belt 2a via the connecting part 2b. This hook part 2c is detachable from an external member (external member) of the smart safety belt 2. In this embodiment, the external member to which the hook part 2c is attached is a fence part 4a (described later) of the intrusion prevention device 4. In other words, the hook part 2c can be attached to the fence part 4a.

[0058] The signal output unit 2d is electrically connected to the hook portion 2c, and upon detecting that the hook portion 2c has been attached to an external member (fence portion 4a), outputs a hook portion attached signal. For example, the signal output unit 2d is fixed to the waist belt 2a and is connected to the hook portion 2c via a wire.

[0059] In this embodiment, the smart safety belt 2 has a waist belt 2a. However, a full harness type safety belt having a harness may be used instead of the waist belt 2a.

[0060] As shown in Figures 2 and 3, the cameras 3 are arranged on both the left and right sides of the parking space S for the compactor truck X. Each camera 3 is arranged in front of an intrusion prevention device 4 and can capture an image of a worker positioned in front of the intrusion prevention device 4. Specifically, the camera 3 located on the left side of the parking space S can capture an image of a worker positioned in front of the intrusion prevention device 4 located on the left side of the two intrusion prevention devices 4. Furthermore, the camera 3 located on the right side of the parking space S can capture an image of a worker positioned in front of the intrusion prevention device 4 located on the right side of the two intrusion prevention devices 4. These cameras 3 are able to output the image data obtained by capturing images.

[0061] Furthermore, each camera 3 is positioned so that the rear wheels of the compactor truck X are included in the angle of view. That is, the camera 3 located on the left side of the parking space S acquires image data including the left rear wheel of the compactor truck X. Furthermore, the camera 3 located on the right side of the parking space S acquires image data including the right rear wheel of the compactor truck X.

[0062] The entry prevention device 4 is a device that can restrict the entry of workers into the area R in front of the input port. As shown in Figures 2 and 3, the entry prevention device 4 is disposed on each of the left and right sides of the parking space S for the compactor truck X. Each entry prevention device 4 includes a fence portion 4a, a bar member 4b, and a bar member drive portion 4c.

[0063] The fence portion 4a is erected so as to restrict entry into the area R in front of the drop-in opening from the left and right. The fence portion 4a of the entry prevention device 4 located on the left side of the parking space S for the compactor truck X is located on the left side of the area R in front of the drop-in opening and is installed along the front-to-rear direction. In addition, the fence portion 4a of the entry prevention device 4 located on the right side of the parking space S for the compactor truck X is located on the right side of the area R in front of the drop-in opening and is installed along the front-to-rear direction.

[0064] These fence portions 4a function as external members to which the hook portions 2c of the smart safety belt 2 can be attached. An attachment frame portion 4a1 to which the hook portions 2c can be attached is provided on the upper portion of the fence portion 4a. The attachment frame portion 4a1 extends in the front-to-rear direction and is formed so as to have a central opening that penetrates in the left-to-right direction. Such an attachment frame portion 4a1 allows the hook portions 2c to move along the extension direction of the attachment frame portion 4a1 (i.e., the front-to-rear direction) while still attached. Therefore, the worker can move in the front-to-rear direction while the hook portions 2c are attached to the attachment frame portion 4a1.

[0065] The bar member 4b is attached to the front of the fence portion 4a, and its state can be changed by the bar member driver 4c. In this embodiment, the bar member 4b is formed by a rod member with a fixed shape, and is rotatable around one end connected to the bar member driver 4c. By rotating the bar member 4b, its state can be changed between an entry restricted state and an entry permitted state. Note that the state of the bar member 4b refers to, for example, the posture or shape of the bar member 4b. In this embodiment, the state of the bar member 4b is changed by changing the posture of the bar member 4b. However, it is also possible to change the state of the bar member 4b by changing the shape of the bar member 4b by expanding or contracting it.

[0066] The entry restricted state is a state in which entry into the area R in front of the drop opening is restricted from the front of the worker. In other words, the entry restricted state is a state in which the gap between the compactor truck X and the fence section 4a is closed, blocking the worker's path to the area R in front of the drop opening. The entry permitted state is a state in which entry into the area R in front of the drop opening is permitted from the front of the worker. In other words, the entry permitted state is a state in which the gap between the compactor truck X and the fence section 4a is open, not blocking the worker's path to the area R in front of the drop opening.

[0067] The bar member driving unit 4c is an actuator that drives the bar member 4b. For example, when the bar member 4b is rotated as in this embodiment, a motor or an air cylinder can be used as the bar member driving unit 4c.

[0068] The bar member 4b may be a balloon-type bar member that is set to an entry-restricted state by supplying gas therein. When the supply of gas is stopped, such a balloon-type bar member deflates and droops, thereby setting to an entry-permitted state. When such a balloon-type bar member is used, the bar member drive unit 4c may be, for example, a blower capable of supplying compressed air to the balloon-type bar member. It is also possible to use a balloon-type member with a shape different from the bar shape instead of the bar member 4b. Even when the shape is changed in this way, using a balloon-type member can prevent damage to the vehicle body even if it comes into contact with a garbage truck X or the like.

[0069] 2 and 3, the intrusion prevention device 4 may also include a safety belt hook 4d onto which the smart safety belt 2 can be hung. The safety belt hook 4d is provided, for example, so as to protrude forward from the front end of the fence portion 4a. At the waste disposal facility 100, rental smart safety belts 2 are prepared, and such rental smart safety belts 2 are hung on the safety belt hook 4d.

[0070] The fall-prevention opening / closing fence device 5 is installed at the boundary between the garbage inlet 102 and the area R in front of the inlet. This fall-prevention opening / closing fence device 5 is equipped with a pair of accordion doors 5a. These accordion doors 5a can be slid left and right, allowing the opening degree to be adjusted. The fall-prevention opening / closing fence device 5 also has a drive unit 5b that slides the accordion doors 5a. Note that instead of the accordion doors 5a, doors of other structures can also be used. For example, a sliding door that opens and closes by sliding a plate-shaped door can also be used.

[0071] The fall-prevention opening / closing fence device 5 is set to a fully open state under the control of the control unit 8, which will be described later, when the garbage truck X moves from the outside (front side) of the area in front of the drop-in opening R toward the area in front of the drop-in opening R. Also, under the control of the control unit 8, the fall-prevention opening / closing fence device 5 is set to a half-open state so as to close the space between the garbage truck X and the drop-in opening opening / closing fence device 5 when the garbage truck X stops in the area in front of the drop-in opening R. Also, under the control of the control unit 8, the fall-prevention opening / closing fence device 5 is set to a fully closed state when the garbage truck X moves from the area in front of the drop-in opening R to the outside (front side) of the area in front of the drop-in opening R.

[0072] The projector 6 is a display device that projects information in front of the compactor truck X parked in the parking space S. The projector 6 is supported, for example, above the parking space S, and projects an image onto the floor from above. Note that if there is a wall in front of the compactor truck X, the projector 6 may also project information onto the wall. Such a projector 6 is a notification device that can notify information to workers.

[0073] The monitor 7 is a display device located in front of the intrusion prevention device, and is located on each of the left and right sides of the parking space S for the compactor truck X, as shown in Figures 2 and 3. The monitor 7 displays, for example, a message requesting the worker to wear the smart safety belt 2. The monitor 7 may also display information on how to wear the smart safety belt 2, how to attach the hook portion 2c to the fence portion 4a, and the danger of falling into the garbage pit. Furthermore, the monitor 7 may be configured to display the same content as the projector 6. Such a projector 6 is an alarm device that can notify the worker of information.

[0074] Furthermore, in this embodiment, the monitor 7 is a touch panel display device, and an operator can input instructions. However, if a separate device is provided to allow an operator to input instructions, the monitor 7 does not need to be a touch panel display device.

[0075] Fig. 5 is a block diagram showing the system configuration of the safety ensuring device 1 of this embodiment. As shown in this figure, the safety ensuring device 1 of this embodiment includes a control unit 8. Note that the control unit 8 is omitted from Figs. 2 and 3. As shown in Fig. 5, the control unit 8 is electrically connected to the smart safety belt 2, camera 3, entry prevention device 4, fall prevention opening / closing fence device 5, projector 6, and monitor 7. Note that the control unit 8 may be connected to the smart safety belt 2, camera 3, entry prevention device 4, fall prevention opening / closing fence device 5, projector 6, and monitor 7 via a wired or wireless connection.

[0076] The control unit 8 is composed of a computer equipped with hardware such as a processor, such as a CPU (Central Processing Unit), and memory. The processor performs arithmetic processing to execute the functions of the control unit 8. The memory stores a rewritable program that describes the functions executed by the CPU. The control unit 8 may include hardware (including circuitry), such as an LSI (Large Scale Integration), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a GPU (Graphics Processing Unit). The control unit 8 realizes its functions through cooperation between software (programs) and hardware. Note that the computer is not limited to being a single device. For example, the computer may be composed of multiple devices interconnected via a network.

[0077] The control unit 8 stores a program P as shown in FIG. 5. The program P causes the control unit 8, which is a computer, to execute various processes. For example, in this embodiment, the program P causes the control unit 8 to execute a step of determining whether the worker is wearing the smart safety belt 2 or not. The program P also causes the control unit 8 to execute a step of controlling the intrusion prevention device 4 so as to restrict the worker from entering the area R in front of the insertion slot, if it is determined that the worker is not wearing the smart safety belt 2. The program P also causes the control unit 8 to execute a step of controlling the intrusion prevention device 4 so as to permit the worker from entering the area R in front of the insertion slot, if it is determined that the worker is wearing the smart safety belt 2.

[0078] It should be noted that the program P does not necessarily have to be stored in the control unit 8. For example, the program P may be recorded on a computer-readable recording medium. In this case, the control unit 8 performs processing by reading and executing the program recorded on the recording medium. The recording medium may be, for example, a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, or a storage device such as a hard disk connected to a computer.

[0079] The control unit 8 executes various processes based on the program P. That is, in this embodiment, when the control unit 8 determines that the worker is not wearing the smart safety belt 2, it causes the intrusion prevention device 4 to restrict the worker from entering the area R in front of the drop opening. Specifically, the control unit 8 controls the bar member drive unit 4c of the intrusion prevention device 4 to set the bar member 4b of the intrusion prevention device 4 to the intrusion restricted state. This restricts the worker from entering the area R in front of the drop opening.

[0080] Furthermore, the control unit 8, with at least one of the conditions being that it has been determined that the worker has already put on the smart safety belt 2, causes the intrusion prevention device 4 to permit the worker to enter the area R in front of the insertion slot. Specifically, the control unit 8 controls the bar member drive unit 4c of the intrusion prevention device 4 to set the bar member 4b of the intrusion prevention device 4 to the intrusion permitting state. This permits the worker to enter the area R in front of the insertion slot.

[0081] In this embodiment, when the control unit 8 determines that the worker has already put on the smart safety belt 2 and receives a hook part attached signal from the signal output unit 2d of the smart safety belt 2, it causes the entry prevention device 4 to allow the worker to enter the area R in front of the insertion opening.

[0082] Furthermore, the control unit 8 determines whether the worker is wearing the smart safety belt 2 or not, based on the image data input from the camera 3. FIG. 6 is an image diagram of image data input from the camera 3 to the control unit 8. For example, when the smart safety belt 2 positioned so as to overlap with the worker is extracted from the image data by image processing, the control unit 8 determines that the worker is wearing the smart safety belt 2. On the other hand, for example, when the worker is extracted by image processing but the smart safety belt 2 positioned so as to overlap with the worker is not extracted from the image data, the control unit 8 determines that the worker is not wearing the smart safety belt 2. Note that the control unit 8 may also determine that the worker is wearing the smart safety belt 2 when a pattern for determining wearing is extracted from the image data so as to overlap with the worker.

[0083] Furthermore, the control unit 8 acquires the shape of the compactor truck X parked opposite the garbage inlet 102 based on the image data, and controls the intrusion prevention device 4 based on the shape of the compactor truck X so that the bar member 4b does not come into contact with the compactor truck X. Specifically, the control unit 8 acquires the shape of the compactor truck X based on the image data input from the camera 3.

[0084] Furthermore, the control unit 8 causes the projector 6 to display at least a portion of the compactor truck X parked facing the garbage inlet 102 and the position where the compactor truck X should be stopped, superimposed on each other. FIGS. 7 and 8 are conceptual diagrams of an image in which the rear wheel X1, which is part of the compactor truck X, and a mark M where the rear wheel X1 should be located (the position where the compactor truck X should be stopped) are superimposed on each other. In FIG. 7, the mark M indicates the position of the rear wheel X1 at the position where the compactor truck X loaded with garbage lifts the loading platform (garbage loading position). In FIG. 8, the mark M indicates the position of the rear wheel X1 at the position where checking work etc. is performed after lifting the platform (front working position).

[0085] Furthermore, the control unit 8 may detect the difference between the position of the compactor truck X and the position where the compactor truck X should stop, and may cause the projector 6 to display a warning if the difference exceeds a preset tolerance range. The difference between the position of the compactor truck X and the position where the compactor truck X should stop can be calculated based on image data input from the camera 3.

[0086] The projector 6 that displays such an image is a display device that can display at least a portion of the compactor truck X parked facing the garbage inlet 102 and the position where the compactor truck X should stop, superimposed on each other. The control unit 8 may also display a similar image on the monitor 7. In such a case, the monitor 7 also becomes a display device that can display at least a portion of the compactor truck X parked facing the garbage inlet 102 and the position where the compactor truck X should stop, superimposed on each other. It is also possible to install the monitor 7 so that it is visible from the driver's seat of the compactor truck X, and not install the projector 6. It is also possible to install a projector 6 that displays an image visible to workers outside the compactor truck X, and not install the monitor 7.

[0087] Next, an example of the operation (safety ensuring method) of the safety ensuring device 1 of this embodiment will be described with reference to Fig. 9. Fig. 9 is a flowchart showing the flow from when a compactor truck X loaded with waste and carrying two workers enters the platform 101, deposits the waste into a waste pit 105, and then leaves the platform 101.

[0088] As shown in FIG. 9, when the compactor truck X enters the platform 101, it is moved in front of the waste drop door 103 (step S1). Here, the waste drop door 103 is automatically opened when the compactor truck X approaches the parking space S (step S2). At this time, the control unit 8 acquires image data from the camera 3 and displays the acquired image data and a mark M indicating the waste drop position superimposed on the projector 6. In addition, the accordion door 5a of the fall prevention opening / closing fence device 5 is in a fully open state beforehand.

[0089] The worker driving the compactor truck X moves the compactor truck X to the garbage dumping position while checking the display on the projector 6. At this time, the control unit 8 may detect the difference between the position of the compactor truck X and the garbage dumping position, and if the difference exceeds a preset tolerance range, cause the projector 6 to display a warning.

[0090] Then, the compactor truck X is stopped at the garbage dumping position (step S3). The control unit 8 confirms that the compactor truck X has stopped at the garbage dumping position based on image data input from the camera 3. Furthermore, when the compactor truck X is moved to the garbage dumping position, the control unit 8 causes the entry prevention device 4 to restrict workers from entering the area R in front of the dumping opening. Furthermore, the control unit 8 controls the drive unit 5b of the fall prevention opening / closing fence device 5 to put the accordion door 5a in a half-open state.

[0091] Next, the loading platform of the compactor truck X is lifted, and the waste is dumped from the loading platform into the waste dump port 102 (step S4). Furthermore, one of the workers gets off the compactor truck X and heads toward the area R in front of the dump port to carry out inspection work or the like (step S5). At this time, the control unit 8 maintains a state in which the worker's entry into the area R in front of the dump port is restricted. The control unit 8 also displays on the monitor 7 information that the smart safety belt 2 needs to be worn and how to wear the smart safety belt 2.

[0092] When the worker gets off the compactor truck X, he puts on the smart safety belt 2 according to the content displayed on the monitor 7 (step S6). At this time, the control unit 8 determines whether or not the worker is wearing the smart safety belt 2 by image processing using image data input from the camera 3. Furthermore, it determines whether or not a hook part attached signal has been input from the signal output unit 2d of the smart safety belt 2 (i.e., whether or not the hook part 2c is attached to the fence part 4a).

[0093] When the worker is wearing the smart safety belt 2 and the hook portion 2c is attached to the fence portion 4a, the control portion 8 causes the entry prevention device 4 to permit the worker to enter the area R in front of the insertion opening. Furthermore, the control portion 8 acquires image data from the camera 3 and causes the projector 6 to display the acquired image data and a mark M indicating the forward working position superimposed on each other.

[0094] The worker checks the condition of the bed of the compactor truck X, for example, in the area R in front of the dumping opening (step S7). Next, the worker, still in the compactor truck X, moves the compactor truck X to the forward working position (step S8). At this time, the control unit 8 detects the difference between the position of the compactor truck X and the garbage dumping position, and may cause the projector 6 to display a warning if the difference exceeds a preset tolerance range.

[0095] The control unit 8 confirms that the compactor truck X is stopped at the front work position based on the image data input from the camera 3. When the compactor truck X is moved to the front work position, the control unit 8 controls the drive unit 5b of the fall prevention opening / closing fence device 5 to fully close the accordion door 5a.

[0096] Next, a worker outside the compactor truck X checks the condition of the bed of the compactor truck X in the area R in front of the drop-in opening (Step S9). Furthermore, the worker outside the compactor truck X performs the work of brushing off any waste remaining on the bed as necessary. When the worker outside the compactor truck X completes his work in the area R in front of the drop-in opening, he removes the smart safety belt 2 and gets into the compactor truck X (Step S10). The control unit 8 determines that the smart safety belt 2 has been removed based on the image data input from the camera 3 or the disappearance of the hook portion attached signal input from the signal output unit 2d. When the smart safety belt 2 has been removed, the control unit 8 controls the entry prevention device 4 to restrict the worker from entering the area R in front of the drop-in opening.

[0097] After completing the above work, the garbage truck X leaves the platform 101 (step S11). When the garbage truck X leaves the parking space S, the garbage drop door 103 is automatically closed (step S12). At this time, the control unit 8 sets the bar member 4b of the entry prevention device 4 to an entry permit state, and sets the accordion door 5a of the fall prevention opening / closing fence device 5 to a fully open state.

[0098] The safety ensuring device 1 of this embodiment as described above is a device that ensures the safety of workers in a waste disposal facility 100. The safety ensuring device 1 of this embodiment includes an intrusion prevention device 4 and a control unit 8. The intrusion prevention device 4 can restrict the entry of workers into the area R in front of the waste inlet, which faces the waste inlet 102 that connects to the waste pit 105. The control unit 8 controls the intrusion prevention device 4. Furthermore, when the control unit 8 determines that the worker is not wearing the smart safety belt 2, the control unit 8 causes the intrusion prevention device 4 to restrict the worker from entering the area R in front of the inlet. Furthermore, the control unit 8 causes the intrusion prevention device 4 to permit the worker to enter the area R in front of the inlet, using as at least one of the conditions the determination that the worker is already wearing the smart safety belt 2.

[0099] According to the safety ensuring device 1 of this embodiment, the control unit 8 determines whether the worker is wearing the smart safety belt 2 or not. Furthermore, if the worker is not wearing the smart safety belt 2, the control unit 8 controls the entry prevention device 4 to restrict the worker from entering the area R in front of the drop opening. In other words, according to the safety ensuring device 1 of this embodiment, if the worker is not wearing the smart safety belt 2, he or she cannot enter the area R in front of the drop opening. Therefore, according to the safety ensuring device 1 of this embodiment, it is possible to reduce the visual safety confirmation work by employees of the waste treatment facility 100, for example, and it is possible to ensure the safety of workers at the waste treatment facility 100 while reducing the workload caused by the work of checking whether safety is being ensured by automation.

[0100] The safety ensuring device 1 of this embodiment also includes a camera 3 that can capture an image of the worker. Based on the image data input from the camera 3, the control unit 8 determines whether the worker is wearing the smart safety belt 2 or not.

[0101] The safety ensuring device 1 of this embodiment judges whether the worker is wearing the smart safety belt 2 or not based on image data obtained by the camera 3. In other words, the safety ensuring device 1 of this embodiment can judge whether the worker is wearing the smart safety belt 2 or not by image processing, and can easily and reliably determine the wearing state of the smart safety belt 2.

[0102] In the safety ensuring device 1 of this embodiment, a pattern for determining whether the smart safety belt 2 is being worn is provided on the smart safety belt 2. When the pattern for determining whether the smart safety belt 2 is being worn is extracted from the image data, the control unit 8 determines that the worker has already worn the smart safety belt 2.

[0103] According to the safety ensuring device 1 of this embodiment, when performing image processing, it is sufficient to extract the wearing determination pattern, which is a known pattern, and therefore the processing load on the control unit 8 due to image processing can be reduced.

[0104] Furthermore, in the safety ensuring device 1 of this embodiment, the smart safety belt 2 includes a waist belt 2a, a hook portion 2c, and a signal output unit 2d. The waist belt 2a is worn by the worker. The hook portion 2c is connected to the waist belt 2a. The signal output unit 2d detects that the hook portion 2c has been attached to the fence portion 4a and outputs a hook portion attached signal. Furthermore, when the control unit 8 determines that the worker has already worn the smart safety belt 2 and a hook portion attached signal is input from the signal output unit 2d of the smart safety belt 2, it causes the intrusion prevention device 4 to permit the worker to enter the area R in front of the insertion opening.

[0105] According to the safety ensuring device 1 of this embodiment, when the following conditions are met: the worker has already worn the smart safety belt 2, and the worker has attached the hook portion 2c of the smart safety belt 2 to the fence portion 4a, the control unit 8 permits the worker to enter the area R in front of the drop-in opening. Therefore, the safety ensuring device 1 of this embodiment can prevent a worker from entering the area R in front of the drop-in opening after wearing the smart safety belt 2 but forgetting to attach the hook portion 2c to the fence portion 4a.

[0106] Furthermore, in the safety ensuring device 1 of this embodiment, the entry prevention device 4 includes a fence portion 4a and a bar member 4b. The fence portion 4a is an external member to which the hook portion 2c of the smart safety belt 2 can be attached. The bar member 4b is attached to the fence portion 4a in a state that allows it to be changed. Furthermore, the state of the bar member 4b can be changed between an entry restricted state that restricts the worker from entering the area R in front of the drop opening, and an entry permitted state that allows the worker to enter the area R in front of the drop opening.

[0107] According to the safety assurance device 1 of this embodiment, by changing the state of the bar member 4b between an entry restriction state and an entry permission state, it is possible to easily switch between a state that restricts entry of workers into the area R in front of the drop opening and a state that allows entry of workers into the area R in front of the drop opening.

[0108] Furthermore, in the safety ensuring device 1 of this embodiment, the fence portion 4a has an attachment frame portion 4a1 that allows movement with the hook portion 2c attached. With the safety ensuring device 1 of this embodiment, the worker can move around with the hook portion 2c attached to the fence portion 4a. This reduces the workload on the worker.

[0109] Furthermore, in the safety ensuring device 1 of this embodiment, the bar member 4b may be a balloon-type bar member that is put into an entry-restricted state by supplying gas therein. According to the safety ensuring device 1 of this embodiment, the bar member 4b can be brought into contact with the compactor truck X. Therefore, it is easier to control the state of the bar member 4b compared to when the state of the bar member 4b is changed within a range where it does not come into contact with the compactor truck X.

[0110] Furthermore, in the safety ensuring device 1 of this embodiment, the control unit 8 acquires the shape of the compactor truck X parked opposite the garbage inlet 102 based on image data. Furthermore, the control unit 8 may control the intrusion prevention device 4 based on the shape of the compactor truck X so that the bar members 4b do not come into contact with the compactor truck X. According to the safety ensuring device 1 of this embodiment, the bar members 4b can be easily prevented from coming into contact with the compactor truck X by performing image processing.

[0111] The safety ensuring device 1 of this embodiment also includes a projector 6 and a monitor 7 that function as notification devices that can notify the worker of information under the control of the control unit 8. The safety ensuring device 1 of this embodiment can provide various information to the worker. For example, the safety ensuring device 1 of this embodiment can provide the worker with information such as the location of the compactor truck X and the wearing status of the smart safety belt 2.

[0112] Furthermore, in the safety ensuring device 1 of this embodiment, the projector 6 can display at least a part of the compactor truck X parked facing the garbage inlet 102 and the position where the compactor truck X should be parked in an overlapping manner.

[0113] According to the safety ensuring device 1 of this embodiment, it is possible to adjust the position of the compactor truck X while visually checking the actual position of the compactor truck X displayed by the projector 6 and the position where the compactor truck X should stop. Therefore, according to the safety ensuring device 1 of this embodiment, it is easy to adjust the position of the compactor truck X.

[0114] Furthermore, in the safety ensuring device 1 of this embodiment, the control unit 8 may detect the difference between the position of the compactor truck X and the position where the compactor truck X should stop, and if the difference exceeds a preset tolerance range, cause the projector 6 to display a warning.

[0115] The safety ensuring device 1 of this embodiment allows the worker to easily recognize that there is a large difference between the actual position of the compactor truck X and the position where the compactor truck X should be stopped. Therefore, the safety ensuring device 1 of this embodiment allows the worker to more reliably adjust the position of the compactor truck X.

[0116] The safety ensuring device 1 of this embodiment also includes a projector 6 as a display device that projects information in front of the compactor truck X. According to the safety ensuring device 1 of this embodiment, information can be provided to workers aboard the compactor truck X by projecting information in front of the compactor truck X. Therefore, the safety ensuring device 1 of this embodiment can provide information to, for example, a worker driving the compactor truck X while he or she is driving.

[0117] Furthermore, the safety ensuring device 1 of this embodiment is equipped with a monitor 7 as a display device, which is arranged in front of the intrusion prevention device 4. According to the safety ensuring device 1 of this embodiment, information can be easily provided to a worker standing in front of the intrusion prevention device 4 via the monitor 7. Therefore, according to the safety ensuring device 1 of this embodiment, for example, it is possible to easily provide a worker standing in front of the intrusion prevention device 4 with the reason why the worker's entry into the area R in front of the insertion opening is restricted.

[0118] The safety device 1 of this embodiment also includes a fall prevention opening / closing fence device 5. The fall prevention opening / closing fence device 5 is installed at the boundary between the garbage inlet 102 and the area R in front of the inlet. The fall prevention opening / closing fence device 5 can adjust its opening degree based on the control of the control unit 8.

[0119] According to the safety ensuring device 1 of this embodiment, the fall prevention opening and closing fence device 5 can prevent the worker from accidentally stepping into the garbage inlet 102. Although properly wearing the smart safety belt 2 can prevent the worker from falling into the garbage pit 105, there is a possibility that the worker may fall if he or she steps into the garbage inlet 102. According to the safety ensuring device 1 of this embodiment, it is possible to prevent the worker from falling.

[0120] Furthermore, in the safety ensuring device 1 of this embodiment, the fall-prevention opening / closing fence device 5 is set to a fully open state when the garbage truck X moves from outside the area R in front of the drop-in opening toward the area R in front of the drop-in opening. Furthermore, when the garbage truck X stops in the area R in front of the drop-in opening, the fall-prevention opening / closing fence device 5 is set to a half-open state so as to close the space between the garbage truck X and the fall-prevention opening / closing fence device 5. Furthermore, when the garbage truck X moves from the area R in front of the drop-in opening to the outside of the area R in front of the drop-in opening, the fall-prevention opening / closing fence device 5 is set to a fully closed state. According to the safety ensuring device 1 of this embodiment, interference between the garbage truck X and the fall-prevention opening / closing fence device 5 can be prevented when the garbage truck X approaches the waste drop-in opening 102.

[0121] In addition, the fall-prevention opening / closing fence device 5 in the safety ensuring device 1 of this embodiment includes a pair of accordion doors 5a that can be opened and closed by sliding, and a drive unit 5b that slides the accordion doors 5a.

[0122] According to the safety ensuring device 1 of this embodiment, the pair of accordion doors 5a can be slid by controlling the drive unit 5b. Therefore, according to the safety ensuring device 1 of this embodiment, the state of the fall prevention opening / closing fence device 5 can be easily changed between a fully open state, a half open state, and a fully closed state.

[0123] The safety ensuring method of this embodiment is a method for ensuring safety in the waste treatment facility 100. The safety ensuring method of this embodiment restricts the worker from entering the area R in front of the drop-in opening when the control unit 8 determines that the worker is not wearing the smart safety belt 2. The safety ensuring method of this embodiment also permits the worker to enter the area R in front of the drop-in opening, with at least one of the conditions being that the control unit 8 determines that the worker has already worn the smart safety belt 2.

[0124] According to the safety ensuring method of this embodiment, the control unit 8 determines whether the worker is wearing the smart safety belt 2 or not. Furthermore, if the worker is not wearing the smart safety belt 2, the control unit 8 restricts the worker from entering the area R in front of the drop opening. In other words, according to the safety ensuring method of this embodiment, if the worker is not wearing the smart safety belt 2, the worker cannot enter the area R in front of the drop opening. Therefore, according to the safety ensuring method of this embodiment, it is possible to reduce the visual safety confirmation work by employees of the waste treatment facility 100, for example, and it is possible to ensure the safety of workers at the waste treatment facility 100 while reducing the workload incurred by the work of checking whether safety is being ensured by automation.

[0125] The program P of this embodiment causes the control unit 8, which is a computer, to execute a step of determining whether the worker is already wearing or not wearing the smart safety belt 2. The program P of this embodiment also causes the control unit 8 to execute a step of controlling the intrusion prevention device 4 to restrict the worker from entering the area R in front of the drop opening when it is determined that the worker is not wearing the smart safety belt 2. The program P of this embodiment also causes the control unit 8 to execute a step of controlling the intrusion prevention device 4 to permit the worker from entering the area R in front of the drop opening when it is determined that the worker is already wearing the smart safety belt 2.

[0126] According to the program P of this embodiment, the control unit 8 determines whether the worker is wearing the smart safety belt 2 or not. Furthermore, if the worker is not wearing the smart safety belt 2, the control unit 8 controls the entry prevention device 4 to restrict the worker from entering the area R in front of the drop opening. In other words, according to the program P of this embodiment, if the worker is not wearing the smart safety belt 2, he or she cannot enter the area R in front of the drop opening. Therefore, according to the program P of this embodiment, it is possible to reduce the visual safety confirmation work by employees of the waste treatment facility 100, for example, and it is possible to ensure the safety of workers at the waste treatment facility 100 while reducing the workload caused by the work of confirming whether safety is being ensured by automation.

[0127] While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to the above-described embodiments. The shapes and combinations of the components shown in the above-described embodiments are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present invention.

[0128] For example, in the above embodiment, a configuration has been described in which the smart safety belt 2 is used as a fall prevention device. However, the present invention is not limited to this. It is also possible to use a safety belt that does not have a signal output function. Furthermore, the worker can also use their own safety belt.

[0129] Furthermore, in the above embodiment, a configuration has been described in which one projector 6 is provided. However, the present invention is not limited to this, and a plurality of projectors 6 may be provided.

[0130] Furthermore, a buzzer device that generates a warning sound may be provided as an alarm device instead of the projector 6 and monitor 7 in the above embodiment. Furthermore, although the above embodiment has been described as including a configuration that includes the fall prevention opening / closing fence device 5, it is also possible to adopt a configuration that does not include the fall prevention opening / closing fence device 5. [Explanation of symbols]

[0131] 1 Safety device 2. Smart safety belts (fall prevention devices) 2a Waist belt (attachment part) 2b Connection 2c Hook part 2d Signal output section 2e Wearing judgment pattern 3. Camera (imaging device) 4 Intrusion prevention device 4a Fence section 4a1 Mounting frame 4b Bar member 4c Bar member drive unit 4d Safety harness hook 5 Fall prevention opening and closing fence device 5a Accordion Door 5b Drive unit 6 Projector (alarm device, display device) 7 Monitor (alarm device, display device) 8 Control Unit 100 Waste treatment facilities Platform 101 102 Garbage inlet 103 Garbage door 104 Slope 105 Garbage Pit M mark P Program R Area in front of the slot S Parking Space X garbage truck X1 rear wheel

Claims

1. A safety device in a waste treatment facility, an intrusion prevention device capable of restricting workers from entering an area in front of a garbage inlet facing the garbage inlet connected to the garbage pit; a control unit that controls the intrusion prevention device; Equipped with The control unit When it is determined that the worker is not wearing a fall prevention device, the entry prevention device restricts the worker from entering the area in front of the insertion opening; The entry prevention device allows the worker to enter the area in front of the insertion opening, based on at least one of the conditions that the worker has been determined to have worn the fall prevention device. A safety device characterized by:

2. an imaging device capable of imaging the worker; The control unit determines whether the worker has worn the fall prevention device or not based on the image data input from the imaging device.

2. The safety device according to claim 1.

3. A pattern for determining whether the fall prevention device is worn is provided on the fall prevention device, The control unit determines that the worker has worn the fall prevention device when the pattern for determining whether the fall prevention device is worn is extracted from the image data.

3. The safety device according to claim 2.

4. The fall prevention device includes: a mounting portion to be mounted by the worker; a hook portion connected to the mounting portion; a signal output unit that detects that the hook unit is attached to an external member and outputs a hook unit attached signal; Equipped with The control unit determines that the worker has already worn the fall prevention device, and when the hook portion attached signal is input from the signal output unit of the fall prevention device, causes the entry prevention device to permit the worker to enter the area in front of the insertion opening.

4. The safety ensuring device according to claim 1, wherein the safety ensuring device is a safety ensuring device.

5. The intrusion prevention device is a fence portion that is the external member to which the hook portion of the fall prevention device can be attached; a bar member attached to the fence portion in a state changeable manner; Equipped with The bar member is changeable between an entry restriction state that restricts the worker from entering the area in front of the insertion port and an entry permission state that permits the worker to enter the area in front of the insertion port.

5. The safety device according to claim 4.

6. 6. The safety ensuring device according to claim 5, wherein the fence portion has a mounting frame portion that can be moved while the hook portion is attached.

7. 6. The safety ensuring device according to claim 5, wherein the bar member is a balloon-type bar member that is brought into the entry-restricted state by supplying gas therein.

8. The control unit The shape of the vehicle parked facing the garbage inlet is acquired based on image data; The intrusion prevention device is controlled based on the shape of the vehicle so that the bar member does not come into contact with the vehicle.

6. The safety device according to claim 5.

9. 4. The safety ensuring device according to claim 1, further comprising an alarm device capable of notifying the worker of information based on the control of the control unit.

10. The safety device according to claim 9, characterized in that the alarm device is a display device capable of superimposing at least a portion of a vehicle parked opposite the garbage dump and the position where the vehicle should stop.

11. The control unit Detecting a difference between the position of the vehicle and the position where the vehicle should stop; When the difference exceeds a preset tolerance, a warning is displayed on the display device.

11. The safety device according to claim 10.

12. 11. The safety ensuring device according to claim 10, wherein the display device comprises a projector that projects information in front of the vehicle.

13. 11. The safety ensuring device according to claim 10, wherein the display device comprises a monitor disposed in front of the intrusion prevention device.

14. A safety device as described in any one of claims 1 to 3, characterized in that it is installed at the boundary between the garbage inlet and the area in front of the inlet and is equipped with a fall prevention opening and closing fence device whose opening degree can be adjusted based on the control of the control unit.

15. The fall prevention opening and closing fence device is The door is in a fully open state when the vehicle is moving from outside the area in front of the entrance toward the area in front of the entrance, When the vehicle stops in the area in front of the insertion opening, the door is set to a half-open state so as to close the space between the vehicle and the door, When the vehicle is moved from the area in front of the insertion slot to the outside of the area in front of the insertion slot, the door is brought into a fully closed state.

15. The safety device according to claim 14.

16. The fall prevention opening and closing fence device is A pair of accordion doors that can be opened and closed by sliding, A drive unit that slides the accordion door; Equipped with 15. The safety device according to claim 14.

17. A method for ensuring safety at a waste treatment facility, comprising: When the control unit determines that the worker is not wearing a fall prevention device, the control unit restricts the worker from entering an area in front of the input port, The control unit determines that the worker has already worn the fall prevention device as at least one of the conditions for permitting the worker to enter the area in front of the insertion opening. A safety ensuring method characterized by the above.

18. On the computer, A step of determining whether the worker has worn a fall prevention device or not; When it is determined that the worker is not wearing the fall prevention device, controlling the entry prevention device so as to restrict the worker from entering an area in front of the input port; When it is determined that the worker has already worn the fall prevention device, controlling the entry prevention device so as to permit the worker to enter the area in front of the insertion opening; Run A program characterized by:

Images