Vehicle runaway prevention system

Abstract

To provide a vehicle runaway prevention system which is used for preventing an operator from forgetting to attach wheel stoppers to one or more wheels, and capable of confirming that the wheel stoppers are attached to the one or more wheels without adding parts for detecting the wheel stoppers, to a vehicle.SOLUTION: A vehicle runaway prevention system comprises: a pair of wheel stoppers attached to one or more wheels when a vehicle with a working device and its operation part is stationary; and a confirmation terminal to confirm attachment of the wheel stoppers. The confirmation terminal comprises: an imaging part; a detection part to detect presence of the wheel stoppers and of a reference object serving as a reference for the wheel stopper positions in the image imaged by the imaging part; a calculation part to calculate a positional relation between the wheel stoppers and the reference object; an authentication part to authenticate that the wheel stoppers are attached to the wheels when the positional relation between the wheel stoppers and the reference object is a prescribed relation; and an operation permission part to transmit an operation permission signal to permit an operation part to operate on the condition that the authentication by the authentication part is succeeded.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a vehicle runaway prevention system for preventing a vehicle from forgetting to attach wheel chocks to the wheels when working with a vehicle such as a high-altitude work vehicle. To Regarding. [Background technology]

[0002] Conventionally, in vehicles equipped with outriggers, such as high-altitude work vehicles and crane vehicles, wheel chocks are attached to the wheels before the outriggers are deployed to prevent the vehicle from running away. However, because the wheel chocks must be attached individually by the worker, there are cases where the worker forgets to attach them, which is dangerous.

[0003] Therefore, to prevent workers from forgetting to attach wheel chocks, the inventions shown in Patent Documents 1 and 2 have been proposed. In both of these inventions, a sensor is attached near the wheels of the vehicle, and this sensor detects whether or not wheel chocks are attached to the wheels, and if the wheel chocks are not attached, the operation of the outriggers is restricted. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2006-117016 A [Patent Document 2] Patent No. 6528429 Summary of the Invention [Problem to be solved by the invention]

[0005] However, these inventions require the installation of a sensor on the vehicle to detect the wheel chock, which is costly and time-consuming.

[0006] The present invention has been made in consideration of the above circumstances, and is intended to prevent an operator from forgetting to attach wheel chocks to the wheels, and is a vehicle runaway prevention system that can confirm that wheel chocks are attached to the wheels without adding any parts for detecting wheel chocks to the vehicle. M The purpose is to provide. [Means for solving the problem]

[0007] Vehicle runaway prevention system of the present invention The first aspect of A wheel stopper is attached to the wheel of a vehicle having a work device and an operating unit thereof when the vehicle is stopped, and a confirmation terminal for confirming the attachment of the wheel stopper. and an opening / closing lock provided in the operating unit. Equipped with The above The confirmation terminal includes an image capturing unit, a detection unit that detects the presence of the wheel stopper and a reference object serving as a reference for the position of the wheel stopper in an image captured by the image capturing unit, a calculation unit that calculates the positional relationship between the wheel stopper and the reference object, an authentication unit that certifies that the wheel stopper is attached to the wheel when the positional relationship between the wheel stopper and the reference object is a predetermined relationship, and an operation permission unit that transmits an operation permission signal that enables operation of the operation unit on the condition that authentication by the authentication unit has been performed. The lock is a lock that disables the operation of the operation unit in a locked state and can be locked and unlocked by remote control, and the operation permission signal is a signal for unlocking the lock. The reference object is an object that exists around the wheel chock attached to the wheel, and it is possible to confirm that the wheel chock is attached to the wheel based on the positional relationship between the reference object and the wheel chock.

[0008] In addition, the vehicle runaway prevention system of the present invention may include a pair of wheel chocks attached to the front and rear of the wheels, and the reference object that serves as a reference for the position of one of the wheel chocks may be the other wheel chock.

[0009] In addition, in the vehicle runaway prevention system of the present invention, the reference object serving as a reference for the position of the wheel chock may be the wheel. Note that, in a case where a pair of wheel chocks is provided, the reference object of one wheel chock may be both the wheel and the wheel of the other wheel chock.

[0010] The vehicle runaway prevention system of the present invention may further include a marker attached to a surface of the wheel chock, and the detection unit may detect the presence of the wheel chock by detecting the marker. The marker is a pattern that is easily recognized by a confirmation terminal (computer), such as a two-dimensional code.

[0012] The vehicle runaway prevention system of the present invention may also include a connection part connected to the wheel stopper and a connection lock provided on the vehicle, the connection part being detachable from the vehicle, the connection lock locking and fixing the connection part attached to the vehicle, being capable of being locked and unlocked by remote control, being unlocked when the operation part is not operable, and the operation part being operable on the condition that the connection lock is locked. The relationship between the locked and unlocked state of the connection lock and the operable part may be controlled by a confirmation terminal, or the connection lock and the operation part may be directly connected to each other and controlled without a confirmation terminal. In addition, when both an opening / closing lock and a connection lock are provided, the connection lock may not be unlocked unless the opening / closing lock is locked, and the opening / closing lock may not be unlocked unless the connection lock is locked.

[0013] A second aspect of the vehicle runaway prevention system of the present invention comprises a wheel stopper that is attached to a wheel of a vehicle having a working device and an operating unit thereof when the vehicle is stopped, a confirmation terminal for confirming the attachment of the wheel stopper, a connection unit connected to the wheel stopper, and a connection lock provided on the vehicle, wherein the confirmation terminal comprises an imaging unit, a detection unit for detecting the presence of the wheel stopper and a reference object that serves as a reference for the position of the wheel stopper in an image captured by the imaging unit, a calculation unit for calculating the positional relationship between the wheel stopper and the reference object, an authentication unit for authenticating that the wheel stopper is attached to the wheel when the positional relationship between the wheel stopper and the reference object is a predetermined relationship, and an operation permission unit for transmitting an operation permission signal that enables operation of the operating unit on the condition that authentication by the authentication unit has been performed, the connection unit being detachable from the vehicle, the connection lock locking and fixing the connection unit attached to the vehicle, being capable of being locked and unlocked by remote operation, being unlockable when operation of the operating unit is impossible, and operation of the operating unit being possible on the condition that the connection lock is locked. Effect of the Invention

[0014] Vehicle runaway prevention system of the present invention To According to this, it is safe because the operation unit cannot be operated unless the confirmation terminal confirms that the wheel chock is attached to the wheel. And because it is confirmed that the wheel chock is attached to the wheel in the image based on the image of the wheel chock captured by the image capture unit of the confirmation terminal, there is no need to add components such as sensors to detect the wheel chock to the vehicle, and the cost and effort required for attaching such components is not required.

[0015] In addition, as a method of confirming that the wheel chock is attached to the wheel, if two wheel chocks are provided, one of them can be used as the reference object for the other wheel chock, or the wheel can be used as the reference object for the wheel chock, which can more reliably confirm that the wheel chock is attached.

[0016] In addition, if the wheel chock is provided with a marker attached to its surface, the presence of the wheel chock can be detected and its position calculated more reliably and accurately. The marker is simply a design, and can be easily attached by drawing it directly on the wheel chock or by attaching a drawn part to the wheel chock.

[0017] Furthermore, if an open / close lock is provided on the operation unit, the operation of the operation unit can be switched between enabled and disabled with a simple configuration.

[0018] Furthermore, if the device is equipped with a connection part connected to the wheel chock and a connection lock provided on the vehicle, and the operating part can be operated only when the connection lock is locked, it is possible to more reliably confirm that the wheel chock has been installed, and if the connection lock can be unlocked when the operating part cannot be operated, it is possible to prevent the wheel chock from being accidentally removed before the operation of the work equipment is completed. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is an overall view of a vehicle runaway prevention system. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. 2 is an explanatory diagram of a confirmation terminal. [Figure 7] 4 is a flowchart of a main part of a vehicle runaway prevention program. [Figure 8]13A is a flowchart of an emergency unlocking step of the vehicle runaway prevention program, and FIG. 13B is a flowchart of a direct unlocking notification step of the vehicle runaway prevention program. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The vehicle runaway prevention system of the present invention will be described below. M The specific contents will be explained. This system is intended for various vehicles equipped with working equipment, and is intended to prevent workers from forgetting to attach wheel chocks to the wheels, and in turn to prevent the vehicle from running away when working with the working equipment without attaching wheel chocks. Here, the case of an aerial work vehicle is shown as the vehicle equipped with the working equipment.

[0021] First, the configuration of the vehicle for high altitude work 100 will be described. As shown in Fig. 3, the vehicle for high altitude work 100 includes a vehicle body 120 having wheels 110 (front wheels 111 and rear wheels 112) at the front and rear, a cab 130 provided at the front part of the vehicle body 120, a boom 140 provided at the rear part of the vehicle body 120, a bucket 150 provided at the tip of the boom 140, outriggers 160 provided at the rear parts of the left and right front wheels 111 and the rear parts of the rear wheels 112 of the vehicle body 120, and an operation unit 170 for the outriggers 160 provided at the rear end of the vehicle body 120. The boom 140 can be raised, lowered, extended, and rotated freely, and controllers for operating it are provided at two locations, at the base of the boom 140 and the bucket 150 (not shown). The bucket 150 is for an operator to ride on and work at high altitude. The outriggers 160 protrude from the sides of the vehicle body 120 and extend vertically to support the vehicle body 120 by lifting it up, and correspond to the working device of the present invention. The operation unit 170 has an operation panel 171 equipped with switches for operating the outriggers 160, and a covering part 172 that covers the operation panel 171. The covering part 172 is attached by a hinge and can be opened and closed freely. The vehicle for working at height 100 is equipped with an interlock system that prevents the boom 140 from moving unless all the outriggers 160 are deployed, and prevents the outriggers 160 from being stored unless the boom 140 is stored.

[0022] 1, the vehicle runaway prevention system of the present invention comprises wheel chocks 1 attached to wheels 110 when the vehicle for working at height 100 is stopped, a confirmation terminal 2 for confirming the attachment of the wheel chocks 1, a marker 3 attached to the surface of the wheel chocks 1, an opening / closing lock 4 provided on an operating unit 170, a connection unit 5 connected to the wheel chocks 1, a connection lock 6 provided on the vehicle body 120 of the vehicle for working at height 100, and a management terminal 7 for managing work using the vehicle for working at height 100. Note that the outlined arrows in FIG. 1 indicate the transmission and reception of information.

[0023] The wheel chock 1 is an existing device for fixing the wheel 110, and as shown in FIG. 2, is substantially wedge-shaped and is attached so as to bite into the gap between the wheel 110 and the ground. The surface that contacts the wheel 110 may be a concave curved surface that matches the shape of the wheel 110, or the surface that contacts the wheel 110 or the surface that contacts the ground may have grooves or unevenness for anti-slip purposes. The wheel chocks 1 are attached in a pair to sandwich the front and rear of the wheel 110. It is safer and more desirable to prepare multiple sets of wheel chocks 1 and attach them to multiple wheels 110, but for simplicity, the following description assumes that one set of wheel chocks 1 is attached to one wheel 110 (rear wheel 112). Of the pair of wheel chocks 1, the one attached to the front side of the wheel 110 is referred to as the front wheel chock 1a, and the one attached to the rear side is referred to as the rear wheel chock 1b.

[0024] Moreover, one end of a rope 11 is tied to each of the front wheel stopper 1a and the rear wheel stopper 1b, and the other end of each rope 11 is tied to the connection part 5. In other words, the front wheel stopper 1a and the rear wheel stopper 1b are connected by the rope 11, and the connection part 5 is attached to the middle part of this rope 11. The connection part 5 is a substantially rectangular parallelepiped block made of a magnetic metal.

[0025] The marker 3 is attached to the surface of the wheel stopper 1, which faces the side of the vehicle body 120 when the wheel stopper 1 is attached to the wheel 110. Here, the marker 3 is assumed to be a square two-dimensional code, and a resin plate on which the marker 3 is printed is attached to the wheel stopper 1. The marker 3 is attached to the wheel stopper 1 such that, as shown in FIG. 2, when the front wheel stopper 1a and the rear wheel stopper 1b are attached to the front and rear of the wheel 110, respectively, the distance between the markers 3 attached to the front wheel stopper 1a and the rear wheel stopper 1b (which may be based on any part of the marker 3, but in this case, the distance is the distance between the front side edge of the marker 3 on the front wheel stopper 1a and the rear side edge of the marker 3 on the rear wheel stopper 1b) is approximately the same as the diameter of the wheel 110.

[0026] The connection lock 6 is provided near the rear wheel 112 (the wheel 110 to which the wheel stopper 1 is attached) of the vehicle body 120, and is an electromagnet-type electronic lock. More specifically, as shown in FIG. 4, it includes an electromagnet 61, a communication unit 62 that communicates with the outside, a switching unit 63 that switches the electrified state of the electromagnet 61, a power supply unit 64 that supplies power to each unit, and a case 65 that houses these units. The electromagnet 61 is exposed on the surface of the case 65, and has a magnetic force only when energized, and attracts the connection unit 5. The attraction force is such that the connection unit 5 cannot be easily removed, at least by human power. The state in which the connection unit 5 is attracted by the electromagnet 61 is the locked state of the connection lock 6, and the state in which the connection unit 5 is not attracted is the unlocked state of the connection lock 6. That is, the connection part 5 is detachable from the vehicle body 120 of the vehicle for high-altitude work 100 via the connection lock 6, and the connection lock 6 locks and fixes the connection part 5 attached to the vehicle body 120 via the connection lock 6. The communication unit 62 receives a locking signal or an unlocking signal from the outside and transmits it to the switching unit 63, thereby switching the energization state of the electromagnet 61. That is, when a locking signal is received, the switching unit 63 supplies power from the power supply unit 64 to the electromagnet 61, and when an unlocking signal is received, the switching unit 63 stops the supply of power from the power supply unit 64 to the electromagnet 61. Thus, the connection lock 6 can be locked and unlocked by remote control. Information on whether the connection lock 6 is in a locked or unlocked state can be transmitted from the communication unit 62 to the outside. The power supply unit 64 may be a battery built into the case 65 of the connection lock 6, or may be an external one such as a battery of the vehicle for high-altitude work 100 to the case 65 of the connection lock 6.

[0027] The open / close lock 4 is provided in the operation unit 170 and is a cylinder-lock type electronic lock. More specifically, as shown in FIG. 5, the lock 4 includes a lock body 45 formed of a cylinder lock, a substantially L-shaped latch 41 connected to the lock body 45, a communication unit 42 for communicating with the outside, a switching unit 43 formed of a motor for switching the locking / unlocking state of the latch 41, a power supply unit 44 for supplying power to each unit, a case 46 that houses these units and is attached to the cover unit 172 side, a receiving unit 47 that engages with the latch 41 attached to the operation panel 171 side, and an open / close key 48 that locks and unlocks the lock body 45. The latch 41 protrudes from the case 46 and rotates relative to the lock body 45. The latch 41 is in a locked state when engaged with the receiving unit 47, and is in an unlocked state when separated from the receiving unit 47. By engaging the latch 41 with the receiving unit 47 to set the locking state, the cover unit 172 cannot be opened, and the operation panel 171 cannot be operated. That is, the lock 4 is in a locked state and the operation unit 170 cannot be operated. The communication unit 42 receives a locking signal or an unlocking signal from the outside and transmits it to the switching unit 43, and the switching unit 43 moves the latch 41 to switch between the locked and unlocked states. That is, when a locking signal is received, the latch 41 engages with the receiving unit 47 to enter a locked state, and when an unlocking signal is received, the latch 41 separates from the receiving unit 47 to enter an unlocked state. Thus, the lock 4 can be locked or unlocked by remote control. Information on whether the lock 4 is in a locked state or an unlocked state can be transmitted from the communication unit 42 to the outside. The power supply unit 44 may be a battery built into the case 46 of the lock 4, or may be an external power supply unit such as a battery of the vehicle for high-altitude work 100. The case 46 may be provided on the operating panel 171 side, and the receiving unit 47 may be provided on the covering unit 172 side. The opening / closing lock 4 can be locked and unlocked not only by remote control, but also directly by inserting the opening / closing key 48 into the keyhole of the lock body 45 and turning it.

[0028] The confirmation terminal 2 is a smartphone or tablet, and as shown in the hardware configuration diagram of Fig. 6, includes a camera 21 that captures an image of the wheel stopper 1 attached to the wheel 110 (rear wheel 112), a display 22 as a display unit that displays an image captured by the camera 21 and other images, a touch panel 23 as an input unit that accepts operation inputs, a CPU 24 that executes program commands in sequence, a storage device (memory) 25 that stores programs and other data, and a communication device 26 for wirelessly connecting to the Internet and other devices. The display 22 and the touch panel 23 are integrally formed, and the buttons and images displayed on the display 22 function as an input unit through the touch panel 23. In addition to the touch panel 23, the input unit may have an operating mechanism such as a mechanical button.

[0029] The management terminal 7 is composed of a smartphone, a tablet, or a personal computer. If it is a smartphone or a tablet, it has the same configuration as the confirmation terminal 2, and if it is a personal computer, it has a keyboard instead of (or in addition to) a touch panel as an input unit.

[0030] The confirmation terminal 2 includes an imaging unit 2a that takes images using the camera 21, a detection unit 2b that detects the presence of the wheel stopper 1 and a reference object that serves as a reference for the position of the wheel stopper 1 in the image taken by the imaging unit, a calculation unit 2c that calculates the positional relationship between the wheel stopper 1 and the reference object, an authentication unit 2d that certifies that the wheel stopper 1 is attached to the wheel 110 when the positional relationship between the wheel stopper 1 and the reference object is a predetermined relationship, an operation permission unit 2e that transmits an operation permission signal that enables operation of the operation unit 170 on the condition that authentication by the authentication unit 2d has been performed, a start notification unit 2f that transmits a notification to the management terminal 7 when the operation permission unit 2e transmits the operation permission signal, a removal permission unit 2g that transmits a removal permission signal that enables removal of the connection unit 5 from the connection lock 6 on the condition that operation of the operation unit 170 is not possible, and an end notification unit 2h that transmits a notification to the management terminal 7 when the removal permission unit 2g transmits the removal permission signal.

[0031] However, the photographing unit 2a, the detecting unit 2b, the calculating unit 2c, the authenticating unit 2d, the operation permission unit 2e, the start notifying unit 2f, the removal permission unit 2g, and the end notifying unit 2h are hardware units that the checking terminal 2 functions as by software installed in the checking terminal 2 (the above units are shown with dotted lines in FIG. 6 to indicate the difference from the other components that are hardware themselves). In other words, the checking terminal 2 has 、 A vehicle runaway prevention program (application) is installed, and each process is executed in sequence by starting the program. At each processing stage of the program, the confirmation terminal 2, which is hardware, includes an image capture unit 2a, a detection unit 2b, a calculation unit 2c, an authentication unit 2d, an operation permission unit 2e, a start notification unit 2f, a removal permission unit 2g, and an end notification unit 2h. The flow of the program processing is explained below. Note that FIG. 7 shows a flowchart showing the flow of the program processing.

[0032] The photographing unit 2a, the detection unit 2b, the calculation unit 2c, the authentication unit 2d, the operation permission unit 2e and the start notification unit 2f function sequentially before the outriggers 160 (work equipment) of the aerial work vehicle 100 are used, and the removal permission unit 2g and the end notification unit 2h function sequentially after the outriggers 160 (work equipment) of the aerial work vehicle 100 are used.

[0033] First, the program causes the confirmation terminal 2 to execute a photographing step S1. By executing the photographing step S1, the confirmation terminal 2 is equipped with a photographing unit 2a. The photographing unit 2a equipped in the confirmation terminal 2 starts the camera 21 and displays an image photographed by the camera 21 on the display 22 (displaying not a still image but what is photographed by the camera 21 in real time).

[0034] Next, the program causes the confirmation terminal 2 to execute the detection step S2. By executing the detection step S2, the confirmation terminal 2 is provided with a detection unit 2b. The detection unit 2b provided in the confirmation terminal 2 detects whether or not the wheel stopper 1 and a reference object serving as a reference for the position of the wheel stopper 1 are present in the image captured by the image capture unit 2a. Here, the reference object serving as a reference for the position of one wheel stopper 1 is the other wheel stopper 1 and the wheel 110 (rear wheel 112). That is, the reference object of the front wheel stopper 1a is the rear wheel stopper 1b and the wheel 110, and the reference object of the rear wheel stopper 1b is the front wheel stopper 1a and the wheel 110. Therefore, the confirmation terminal 2 as the detection unit 2b detects the presence of the front wheel stopper 1a, the rear wheel stopper 1b, and the wheel 110. If the wheel stopper 1 and the wheel 110 are not present, the detection is repeated.

[0035] The detection unit 2b of the confirmation terminal 2 detects the presence of the wheel stopper 1 by detecting the marker 3 consisting of a two-dimensional code attached to the surface of the wheel stopper 1. Also, the detection unit 2b detects the presence of the wheel 110 by performing image recognition of the circular outer shape.

[0036] Next, the program causes the confirmation terminal 2 to execute a calculation step S3. By executing the calculation step S3, the confirmation terminal 2 is provided with a calculation unit 2c. The calculation unit 2c provided in the confirmation terminal 2 calculates the positional relationship between the wheel stopper 1 detected by the detection unit 2b and the reference object, that is, the front wheel stopper 1a, the rear wheel stopper 1b, and the wheel 110. More specifically, the calculation unit 2c calculates the size, position, and attitude of the marker 3 attached to the front wheel stopper 1a and the rear wheel stopper 1b (the specific calculation method is a known method, and a detailed description is omitted here), and based on the calculated size, position, and attitude, calculates the distance between the marker 3 attached to the front wheel stopper 1a and the marker 3 attached to the rear wheel stopper 1b, that is, the distance between the front wheel stopper 1a and the rear wheel stopper 1b. In addition, the calculation unit 2c calculates the center or the front and rear ends of the wheel 110 recognized by the image. The calculation result is stored in the storage device 25.

[0037] Next, the program causes the confirmation terminal 2 to execute authentication step S4. By executing authentication step S4, the confirmation terminal 2 is provided with an authentication unit 2d. The authentication unit 2d provided in the confirmation terminal 2 certifies that the wheel stopper 1 is attached to the wheel 110 when the positional relationship between the wheel stopper 1 and the reference object, i.e., the positional relationship between the front wheel stopper 1a, the rear wheel stopper 1b, and the wheel 110, is a predetermined relationship based on the calculation result of the calculation unit 2c (calculation step S3). More specifically, the authentication unit 2d certifies that the wheel stopper 1 is attached to the wheel 110 when the distance between the front wheel stopper 1a and the rear wheel stopper 1b (= the distance between the marker 3 attached to the front wheel stopper 1a and the marker 3 attached to the rear wheel stopper 1b) is approximately the same as the diameter of the wheel 110 and the wheel 110 is located between the front wheel stopper 1a and the rear wheel stopper 1b. The diameter of the wheel 110 is stored in advance in the storage device 25 of the confirmation terminal 2, and if the calculated distance falls within a predetermined error range with respect to that value, it is determined that they are approximately the same. Whether the wheel 110 is located between the front wheel stopper 1a and the rear wheel stopper 1b, that is, whether the wheel 110 is located between the marker 3 attached to the front wheel stopper 1a and the marker 3 attached to the rear wheel stopper 1b, is determined based on whether the center or the front and rear ends of the wheel 110 are between the front and rear markers 3 in the horizontal direction. The authentication result is displayed on the display 22 and stored in the storage device 25. If authentication is not successful, the detection step S2 is executed again.

[0038] Next, the program causes the confirmation terminal 2 to execute the operation permission step S5. By executing the operation permission step S5, the confirmation terminal 2 is provided with an operation permission unit 2e. The operation permission unit 2e provided in the confirmation terminal 2 transmits a signal to unlock the open / close lock 4 on the condition that authentication has been performed by the authentication unit 2d (authentication step S4) and the connection lock 6 is in a locked state. When the communication unit 42 of the open / close lock 4 receives the signal and the open / close lock 4 is in an unlocked state, the cover unit 172 of the operation unit 170 is opened, and the operation panel 171 can be operated. In other words, the signal to unlock the open / close lock 4 is an operation permission signal that enables the operation of the operation unit 170. If the connection lock 6 is not in a locked state, the open / close lock 4 will not be unlocked. Regarding the locked / unlocked state of the connection lock 6, information is transmitted from the communication unit 62 of the connection lock 6 to the communication device 26 of the confirmation terminal 2. If the locking of the connection lock 6 is not confirmed, detection of the state of the connection lock 6 is repeated.

[0039] Next, the program causes the confirmation terminal 2 to execute a start notification step S6. By executing the start notification step S6, the confirmation terminal 2 is provided with a start notification unit 2f. When the operation permission unit 2e enables the operation unit 170, that is, in response to the transmission of an operation permission signal (a signal to unlock the lock 4) by the operation permission unit 2e (operation permission step S5), the start notification unit 2f provided in the confirmation terminal 2 transmits a notification to the management terminal 7 that work using the outrigger 160 (working device) will start. More specifically, the start notification unit 2f transmits an e-mail to the management terminal 7 indicating that work has started. In addition, various information such as the name of the worker, the time when the lock 4 was unlocked, and an image of the wheel stopper 1 attached to the wheel 110 may be transmitted. Furthermore, if the confirmation terminal 2 is compatible with a satellite positioning system, it may transmit position information obtained by the system.

[0040] Up to this point, the functions are performed before work is performed using the outriggers 160, the boom 140, and the bucket 150, and from here on, the functions are performed after work is performed using the outriggers 160, the boom 140, and the bucket 150. After these operations, the covering portion 172 of the operating unit 170 is closed, and the opening / closing lock 4 is locked by the opening / closing key 48.

[0041] Next, the program causes the confirmation terminal 2 to execute a removal permission step S7. By executing the removal permission step S7, the confirmation terminal 2 is provided with a removal permission unit 2g. The removal permission unit 2g provided in the confirmation terminal 2 transmits a signal to unlock the connection lock 6 on the condition that the operation unit 170 cannot be operated, that is, the open / close lock 4 is locked. When the communication unit 62 of the connection lock 6 receives the signal and the connection lock 6 is unlocked, the connection unit 5 can be removed. In other words, the signal to unlock the connection lock 6 is a removal permission signal that allows the connection unit 5 to be removed. If the open / close lock 4 is not locked, the connection lock 6 will not be unlocked. Regarding the locked / unlocked state of the open / close lock 4, information is transmitted from the communication unit 42 of the open / close lock 4 to the communication device 26 of the confirmation terminal 2. If the locking of the open / close lock 4 is not confirmed, detection of the state of the open / close lock 4 is repeated.

[0042] Next, the program causes the confirmation terminal 2 to execute the end notification step S8. By executing the end notification step S8, the confirmation terminal 2 is provided with the end notification unit 2h. The end notification unit 2h provided in the confirmation terminal 2 transmits a notification to the management terminal 7 that the work using the outrigger 160 (working device) has been completed in response to the transmission of the removal permission signal (a signal to unlock the connection lock 6) by the removal permission unit 2g (removal permission step S7). More specifically, the end notification unit 2h transmits an e-mail to the management terminal 7 indicating that the work has been completed. In addition, the end notification unit 2h may transmit various information such as the name of the worker, the time when the opening / closing lock 4 was locked, and an image of the wheel stopper 1 attached to the wheel 110. Furthermore, if the confirmation terminal 2 is compatible with a satellite positioning system, it may transmit position information obtained by the satellite positioning system. With the above, a series of operations of this program is completed.

[0043] In addition to the above series of operations, the program can cause the confirmation terminal 2 to execute an emergency unlocking step S9 (FIG. 8(a)). By executing the emergency unlocking step S9, the confirmation terminal 2 is provided with an emergency unlocking unit 2i. The emergency unlocking unit 2i provided in the confirmation terminal 2 can transmit an unlocking signal to the open / close lock 4 or the connection lock 6 at any time by the operator's operation, regardless of various conditions. The fact that the open / close lock 4 or the connection lock 6 has been unlocked by the emergency unlocking unit 2i is stored in the storage device 25, and the management terminal 7 is notified of this fact. More specifically, the emergency unlocking unit 2i transmits an e-mail stating that the open / close lock 4 or the connection lock 6 has been unlocked by the emergency unlocking unit 2i. In addition, various information such as the operator's name and the time of unlocking may be transmitted. Furthermore, if the confirmation terminal 2 is compatible with a satellite positioning system, it may transmit position information obtained by the system.

[0044] Similarly, apart from the above series of operations, the program can cause the confirmation terminal 2 to execute a direct unlocking notification step S10 (FIG. 8(b)). By executing the direct unlocking notification step S10, the confirmation terminal 2 is provided with a direct unlocking notification unit 2j. When the worker unlocks the lock 4 with the lock 48, the direct unlocking notification unit 2j of the confirmation terminal 2 receives information to that effect from the lock 4, stores the information in the storage device 25, and transmits a notification to the management terminal 7. More specifically, the direct unlocking notification unit 2j transmits an e-mail indicating that the lock 4 has been unlocked with the lock 48. In addition, various information such as the name of the worker and the time of unlocking may be transmitted. Furthermore, if the confirmation terminal 2 is compatible with a satellite positioning system, it may transmit position information obtained by the satellite positioning system.

[0045] Next, the steps of work using the vehicle for high-altitude work 100 using the above-mentioned vehicle runaway prevention system will be described. The vehicle for high-altitude work 100 is equipped with a wheel stopper 1, and is also fitted with an opening / closing lock 4 and a connecting lock 6. The worker carries a confirmation terminal 2.

[0046] (1) Wheel stopper installation process First, the vehicle for high-altitude work 100 is parked at a specified work location. After parking, the worker takes out the wheel chock 1 stored in a storage location of the vehicle for high-altitude work 100. Then, the worker attaches the connection part 5 connected to the wheel chock 1 to the connection lock 6 and locks the connection lock 6 (attracted to the electromagnet 61), and attaches the wheel chock 1 to the front and rear of the wheel 110.

[0047] (2) Wheel stopper checking process The worker starts the vehicle runaway prevention program in the confirmation terminal 2, and photographs the wheel 110 and the wheel stopper 1 attached to the wheel 110 with the camera 21 of the confirmation terminal 2. If an appropriate photograph is taken, the program processing proceeds, and the confirmation terminal 2 sends a signal to unlock the lock 4. At the same time, the confirmation terminal 2 sends an email to the management terminal 7 stating that work has begun.

[0048] (3) Outrigger deployment process The worker opens the cover portion 172 of the operation unit 170 and operates the operation panel 171 to deploy the outriggers 160. The vehicle body 120 is lifted by the outriggers 160, and the wheels 110 are separated from the wheel chocks 1.

[0049] (4) Main work process With the vehicle body 120 of the vehicle for working at height 100 being securely supported by the outriggers 160, the worker gets into the bucket 150 and operates the boom 140 to carry out the necessary work at the height. Then, when the work is completed, the boom 140 is stored.

[0050] (5) Outrigger storage process The worker operates the operation panel 171 to stow the outriggers 160. The vehicle body 120 is lowered and the wheels 110 come into contact with the wheel chocks 1 again. In other words, the wheel chocks 1 are attached to the wheels 110, so the vehicle for high-altitude work 100 will not run away.

[0051] (6) Wheel stopper removal process The worker closes the covering portion 172 of the operation unit 170 and locks the opening / closing lock 4 with the opening / closing key 48. This causes the confirmation terminal 2 to send a signal to unlock the connection lock 6. At the same time, the confirmation terminal 2 sends an email to the management terminal 7 stating that the work has been completed. The worker then removes the connection portion 5 from the connection lock 6, removes the wheel stopper 1 from the wheel 110, and stores them in a storage location on the aerial work platform 100. This completes the series of steps.

[0052] If the confirmation terminal 2 cannot recognize the car stopper 1 (marker 3) due to bad weather or the like, the worker can operate the confirmation terminal 2 to unlock the lock 4 with the emergency unlocking unit 2i, thereby allowing subsequent work to be carried out. Also, the lock 4 may be unlocked directly with the key 48, rather than using the confirmation terminal 2. In either case, the fact that the lock 4 has been unlocked by a means other than the usual one is recorded, and the management terminal 7 is notified of this fact.

[0053] According to such a vehicle runaway prevention system and vehicle runaway prevention program, the operation unit 170 cannot be operated unless the confirmation terminal 2 confirms that the wheel chock 1 has been attached to the wheel 110, so that the outrigger 160 is prevented from being deployed without the wheel chock 1 being attached, and safety is ensured. Furthermore, since the system confirms that the wheel chock 1 has been attached to the wheel 110 in the image based on the image of the wheel chock 1 taken by the camera 21 of the confirmation terminal 2, there is no need to add a component such as a sensor for detecting the wheel chock 1 to the vehicle body 120, and the cost and effort required for attaching such a component are not required. In addition, as a method for confirming that the wheel chock 1 has been attached to the wheel 110, one wheel chock 1 is used as a reference object for the other wheel chock 1, and further the wheel 110 is used as a reference object for the wheel chock 1, so that the attachment of the wheel chock 1 can be confirmed more reliably. Furthermore, since the system is provided with the marker 3 attached to the surface of the wheel chock 1, the presence of the wheel chock 1 can be detected more reliably and accurately and its position can be calculated. The marker 3 is merely a design, and here, a resin plate on which the marker 3 is printed is attached to the wheel stopper 1, so that it can be easily attached. In addition, since the open / close lock 4 provided on the operation unit 170 is provided, the operation of the operation unit 170 can be switched between enabled and disabled with a simple configuration. Furthermore, since the connection unit 5 connected to the wheel stopper 1 and the connection lock 6 provided on the vehicle body 120 are provided, and the open / close lock 4 is unlocked on the condition that the connection lock 6 is locked, it is possible to more reliably confirm that the wheel stopper 1 has been attached. In addition, since the connection lock 6 is unlocked on the condition that the open / close lock 4 is locked, it is possible to prevent the wheel stopper 1 from being removed by mistake before the operation of the outrigger 160 is completed. Note that such aerial work vehicles are often leased vehicles, and in that case, it is difficult to perform complex modifications to the vehicle, but the open / close lock 4 and the connection lock 6 as described above can be attached in a manner that allows the vehicle to be restored to its original state. In addition, since the confirmation terminal 2 is equipped with a start notification unit 2f and an end notification unit 2h that send notifications to the management terminal 7, the work status can be confirmed at a location away from the work site, and the work status can be managed collectively even when there are multiple aerial work vehicles 100.Furthermore, even if the confirmation terminal 2 cannot recognize the car stopper 1 (marker 3) due to bad weather or the like, subsequent work can be performed by unlocking the lock 4 with the emergency unlocking unit 2i or by unlocking the lock 4 with the key 48. These unlocking means are for emergency use, and the fact that the lock 4 has been unlocked by these means is recorded and notified to the management terminal 7, preventing abuse during normal times.

[0054] The present invention is not limited to the above embodiment. For example, a vehicle may have a plurality of wheel stops, and in that case, the confirmation terminal may confirm the installation of all the wheel stops, or may confirm the installation of only some of the wheel stops. The marker may be drawn directly on the wheel stop. Furthermore, the open / close lock may be automatically locked by closing the cover of the operation unit. The confirmation terminal may be equipped with a separate camera separated from the main body, and the main body and the camera may communicate with each other. Furthermore, in the confirmation terminal, when the detection unit detects the wheel stop, it may detect the shape of the wheel stopper itself by image recognition, rather than detecting the marker. Furthermore, the authentication unit compares the distance between the front and rear wheel stops with the diameter of the wheel, but since the diameter of the wheel differs depending on the vehicle model, the worker may input the diameter or select from multiple values ​​stored in the storage device in advance. Furthermore, by selecting the vehicle model, the corresponding wheel diameter value may be applied. Furthermore, the marker on the wheel stopper may be set to correspond to the vehicle model, and the detection unit may recognize the vehicle model by detecting the marker, and the corresponding wheel diameter value may be automatically applied. Furthermore, the notification sent from the confirmation terminal to the management terminal may be sent by various means other than email. Also, an interlock system may be configured in which the open / close lock and the connection lock are directly electrically or mechanically connected, and when one is locked, the other is unlocked. Furthermore, if an operator attempts to perform a procedure different from the normal work procedure (for example, by not attaching the connection part to the connection lock and performing confirmation using the confirmation terminal), an alarm may be issued by sound or light. The alarm may be issued from an alarm device provided on the vehicle body, or from the confirmation terminal. The vehicle runaway prevention system of the present invention does not have to be a strict interlock system in which the next procedure cannot be carried out unless the normal procedure is performed. For example, the open / close lock is not unlocked unless the attachment of the wheel stopper is confirmed, and the operation unit cannot be operated, but a separate means for enabling the operation of the operation unit may be provided.Even in such cases, it is possible to make the worker aware that something is not going according to normal procedure, so this alone can be effective. [Explanation of symbols]

[0055] 1 Wheel chock 2 Confirmation terminal 2a Photography Department 2b Detection section 2c calculation section 2d Authentication section 2e Operation permission section 3 Marker 4 Lock 5 Connection 6 Connection lock 100 High-altitude work vehicle (vehicle) 110 wheels 160 Outriggers (work equipment) 170 Operation section

Claims

1. The vehicle includes a wheel stopper that is attached to a wheel of a vehicle having a working device and an operating unit thereof when the vehicle is stopped, a confirmation terminal for confirming that the wheel stopper is attached, and an opening / closing lock provided on the operating unit, the confirmation terminal comprises an image capturing unit, a detection unit which detects the presence of the wheel stopper and a reference object serving as a reference for the position of the wheel stopper in an image captured by the image capturing unit, a calculation unit which calculates a positional relationship between the wheel stopper and the reference object, an authentication unit which certifies that the wheel stopper is attached to the wheel when the positional relationship between the wheel stopper and the reference object is a predetermined relationship, and an operation permission unit which transmits an operation permission signal which enables operation of the operation unit on the condition that authentication by the authentication unit has been performed, The opening / closing lock is configured to disable the operation of the operation unit when locked, and can be locked and unlocked by remote control, A vehicle runaway prevention system, wherein the operation permission signal is a signal for unlocking the opening / closing lock.

2. The vehicle includes a wheel stopper that is attached to a wheel of a vehicle having a working device and an operating unit thereof when the vehicle is stopped, a confirmation terminal for confirming the attachment of the wheel stopper, a connection part connected to the wheel stopper, and a connection lock provided on the vehicle, the confirmation terminal comprises an image capturing unit, a detection unit which detects the presence of the wheel stopper and a reference object serving as a reference for the position of the wheel stopper in an image captured by the image capturing unit, a calculation unit which calculates a positional relationship between the wheel stopper and the reference object, an authentication unit which certifies that the wheel stopper is attached to the wheel when the positional relationship between the wheel stopper and the reference object is a predetermined relationship, and an operation permission unit which transmits an operation permission signal which enables operation of the operation unit on the condition that authentication by the authentication unit has been performed, The connection portion is detachable from the vehicle, The connection lock is for locking and fixing the connection part attached to the vehicle, and can be locked and unlocked by remote operation, and can be unlocked when the operation part cannot be operated, A vehicle runaway prevention system, characterized in that the operation unit can be operated only when the connection lock is locked.

3. A connection part connected to the wheel stopper and a connection lock provided on the vehicle, The connection portion is detachable from the vehicle, The connection lock is for locking and fixing the connection part attached to the vehicle, and can be locked and unlocked by remote operation, and can be unlocked when the operation part cannot be operated, 2. The vehicle runaway prevention system according to claim 1, wherein the operation unit can be operated only when the connection lock is locked.

4. A pair of wheel chocks attached to the front and rear of the wheel; 4. A vehicle runaway prevention system according to claim 1, 2 or 3, wherein the reference object serving as a reference for the position of one of the wheel stops is the other of the wheel stops.

5. 5. A vehicle runaway prevention system according to claim 1, 2, 3 or 4, wherein the reference object serving as a reference for the position of the wheel stopper is the wheel.

6. A marker is provided on a surface of the wheel chock, 6. A vehicle runaway prevention system according to claim 1, wherein the detection unit detects the presence of the wheel stopper by detecting the marker.

Images