Display system

Abstract

To provide a display system which reduces the burden on an operator.SOLUTION: A display system is provided, comprising a display unit 21 provided at the rear of a vehicle and configured to display weight of an object under measurement mounted on the vehicle, and a control unit 30 configured to determine whether the vehicle can be driven and, if affirmative, provide control to automatically stop display of the display unit 21.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a technology for a display system capable of displaying the weight of an object to be weighed loaded on a vehicle. [Background technology]

[0002] Conventionally, a display system for displaying the weight of an object to be weighed loaded on a vehicle has been publicly known, as described in Patent Document 1, for example.

[0003] Patent Document 1 describes a display device that displays the weight of the garbage loaded on a garbage collection vehicle. The display device is provided on the exterior (side) of the garbage collection vehicle body. By displaying the weight of the garbage on the display device, a worker outside the garbage collection vehicle can check the weight of the garbage. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2001-74540 A Summary of the Invention [Problem to be solved by the invention]

[0005] Here, the above-mentioned display device may be provided at the rear of the body of the refuse collection vehicle. However, in this case, if the display device continues to display (light) while driving, it may interfere with the lighting of the tail lamps and other lighting devices at the rear of the vehicle. For this reason, it is necessary to manually operate the operation unit provided on the display device to turn off the display device while driving, which places a burden on the worker.

[0006] SUMMARY OF THE PRESENT DISCLOSURE In order to solve the above problems, an object of the present invention is to provide a display system that can reduce the burden on workers. [Means for solving the problem]

[0007] In order to achieve the above-mentioned objective, a display system according to one embodiment of the present invention comprises a display unit that is positioned at the rear of a vehicle and is capable of displaying the weight of an object to be weighed loaded on the vehicle, and a control unit that determines whether the vehicle is in a state where it can be driven or not, and if it is determined that the vehicle is in a state where it can be driven, executes control to automatically stop the display on the display unit. Effect of the Invention

[0008] According to the present invention, the burden on the worker can be reduced. [Brief description of the drawings]

[0009] [Figure 1] 1 is a rear view showing a refuse collection vehicle equipped with a display system according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a block diagram showing devices provided in the refuse collection vehicle. [Diagram 3] FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] In the following, the front-rear direction, the left-right direction, and the up-down direction are defined according to the arrows shown in the figure.

[0011] A display system 10 according to an embodiment of the present invention is provided in a refuse collection vehicle 1 capable of detecting the weight of collected materials such as recyclable waste, and is capable of displaying the weight of the collected materials. First, the refuse collection vehicle 1 will be described below.

[0012] The refuse collection vehicle 1 shown in FIG. 1 is a vehicle (commercial vehicle) that collects recyclable waste and other waste. The refuse collection vehicle 1 patrols multiple collection locations. The refuse collection vehicle 1 has an inlet 2 at the rear of the vehicle body, through which waste is dropped off. Tail lights 3 are provided on both the left and right sides of the inlet 2 at the upper rear of the vehicle body. The tail lights 3 emit light of a specified color (for example, red). In addition, multiple operation buttons 4 (five in the illustrated example) are provided at the lower left side of the rear of the vehicle body to perform operations related to waste collection.

[0013] As shown in FIG. 2, the refuse collection vehicle 1 is equipped with a parking brake 5 that keeps the vehicle body stationary when parked. The parking brake 5 may be, for example, a mechanical type in which the brake is activated via a wire cable or the like when the driver pulls a parking lever, and the brake is released when the parking lever is returned. When the parking brake 5 is activated (activated state), the refuse collection vehicle 1 is unable to travel. On the other hand, when the parking brake 5 is released (released state), the refuse collection vehicle 1 is able to travel. The parking brake 5 is also equipped with a detection sensor that can detect the state of the parking brake 5.

[0014] The refuse collection vehicle 1 also includes a weighing device 6 that weighs collected materials. The weighing device 6 weighs collected materials loaded on the vehicle body by being inserted through the insertion opening 2. The weighing device 6 includes a load cell, which is a sensor that detects the load.

[0015] The refuse collection vehicle 1 also includes a display system 10 capable of displaying the weighing results (weight of collected materials loaded on the vehicle body) of the weighing device 6. The configuration of the display system 10 will be described below with reference to Figs. 1 to 3. The display system 10 includes a display unit 20 and a control unit 30.

[0016] The display 20 shown in FIG. 3 is capable of displaying the weighing results of the weighing device 6 outside the body of the refuse collection vehicle 1, and can also be used to operate the weighing device 6. As shown in FIG. 1, the display 20 is arranged on the rear side of the body of the refuse collection vehicle 1 so as to be capable of displaying the weighing results. In this embodiment, the display 20 is provided below the left tail lamp 3 (between the left tail lamp 3 and the operation button 4). The outer shape of the display 20 is formed into an approximately rectangular parallelepiped. The display 20 operates using power supplied from a battery mounted on the refuse collection vehicle 1. The display 20 includes a display unit 21, a power lamp 22, a tare button 23, and a weighing button 24.

[0017] The display unit 21 is a section that displays the weighing result of the weighing device 6. As shown in Fig. 3, the display unit 21 is formed in a substantially rectangular shape that is elongated in the left-right direction. The display unit 21 displays the weighing result by turning on (emitting) a light-emitting element such as an LED. The display unit 21 lights up in a color (e.g., green) different from the tail lamp 3.

[0018] The power lamp 22 is turned on when the weighing device 6 is activated. The power lamp 22 is disposed above the display unit 21, for example.

[0019] The tare button 23 is used for operation when setting a tare weight for the weighing device 6. Specifically, when the tare button 23 is operated with collected items already loaded on the refuse collection vehicle 1, the weight of the loaded collected items is set as the tare weight value by the control unit 30 described later.

[0020] The weighing button 24 is used for weighing the weight of the collected materials loaded on the refuse collection vehicle 1. After operating the tare button 23, when new collected materials are inserted into the insertion port 2 and the weighing button 24 is operated, the weight of the collected materials loaded on the refuse collection vehicle 1 minus the tare value (i.e., the weight of the collected materials already loaded before the new collected materials were inserted) is calculated by the control unit 30 described later.

[0021] In the above example, the tare button 23 and the weighing button 24 are provided as buttons on the display 20, but in addition to the above-mentioned buttons, various buttons capable of operating the weighing device 6, such as a button for performing a zero adjustment operation on the weighing device 6 (zero adjustment button) and a button for performing an operation for totaling the weighing results (total button), can be provided on the display 20. Also, the display 20 can be provided with an appropriate connector (not shown) for connecting to other devices such as an operating device. When an operating device is connected to the display 20, appropriate settings related to the display system 10 can be made via the operating device.

[0022] The control unit 30 shown in Fig. 2 controls various calculations, storage, and the like. The control unit 30 includes a CPU, memory, and the like. The control unit 30 is electrically connected to the parking brake 5, the weighing device 6, and the display 20 via a signal line L. The control unit 30 can obtain information such as the detection results from the weighing device 6 and signals generated by the operation of the tare button 23 and the weighing button 24, and can perform calculations based on the information. The control unit 30 can also display the calculation results on the display unit 21.

[0023] The control unit 30 can also determine the state of the parking brake 5 and switch the display of the display unit 21 based on the determination result. Specifically, when the parking lever is operated to switch the state of the parking brake 5, a signal is transmitted from the detection sensor of the parking brake 5 to the control unit 30 via the signal line L. The control unit 30 determines the state of the parking brake 5 based on the detection result of the above signal, and when it is determined that the parking brake 5 is in an applied state, it causes the display unit 21 to display. When it is determined that the parking brake 5 is in a released state, the control unit 30 makes the display unit 21 non-display (turns off).

[0024] In the above example, a mechanical parking brake operated by a parking lever is used as the parking brake 5, but instead of the above embodiment, an electric parking brake operated by a switch or the like may be used. In this case, a configuration can be adopted in which the control unit 30 determines the state of the parking brake 5 based on a signal output in response to the operation of the switch.

[0025] The following describes an example of collection and weighing of waste using the above-mentioned refuse collection vehicle 1. First, the driver (operator) of the refuse collection vehicle 1 stops the refuse collection vehicle 1 at the collection site of the waste, and parks the refuse collection vehicle 1 by applying the parking brake 5. In this case, the control unit 30 detects a signal indicating that the parking brake 5 is in an applied state, and turns on the display unit 21.

[0026] Next, the worker operates the tare button 23 on the display 20, inserts new collected items into the inlet 2 of the refuse collection vehicle 1, and then operates the weighing button 24. This causes the weight of the collected items loaded on the refuse collection vehicle 1 minus the tare value (i.e., the weight of the collected items inserted this time) to be displayed on the display unit 21. The worker can check the weight of the collected items inserted this time from outside the vehicle body by visually checking the display on the display unit 21. It should be noted that a device (indicator) capable of displaying the weight of the collected items and operating the weighing device 6 may also be provided inside the cabin of the refuse collection vehicle 1.

[0027] The worker also operates a printer (not shown) installed in the cabin to print the weight of the collected items on paper. The printer can be operated using an indicator in the cabin. It is also possible to provide the display 20 with a button for operating the printer.

[0028] After the weighing of the collected materials is completed, the worker releases the parking brake 5 when starting the refuse collection vehicle 1. In this case, the control unit 30 detects a signal indicating that the parking brake 5 is in the released state and turns off the display unit 21. This completes the collection and weighing of the collected materials using the refuse collection vehicle 1.

[0029] According to the display system 10 of this embodiment, the workability can be improved when collecting and weighing collected materials using the refuse collection vehicle 1. That is, if the display 20 is provided at the rear of the body of the refuse collection vehicle 1, turning on the display unit 21 during driving may interfere with the lighting of the tail lamps 3. For this reason, it is desirable to turn off the display unit 21 during driving. In the display system 10 of this embodiment, when the parking brake 5 is released and the refuse collection vehicle 1 is in a state in which it can be driven, the display unit 21 can be automatically turned off. Also, when the parking brake 5 is activated and the refuse collection vehicle 1 is parked (in a state in which it cannot be driven), the display unit 21 can be automatically displayed. This eliminates the need to manually switch the display unit 21 on and off, thereby reducing the burden on the worker.

[0030] In addition, as described above, the display unit 21 is configured to automatically turn off, so that it is possible to prevent the display unit 21 from remaining on while driving due to the operator forgetting to turn it off. This makes it possible to extend the life of the light-emitting elements (LEDs, etc.) of the display unit 21.

[0031] In addition, in this embodiment, the display device 20 is not provided with an operation unit for manually switching the display unit 21 on and off. This makes it possible to simplify the configuration of the display device 20. Note that it is also possible to manually switch the display unit 21 on and off using an operation device connected to the display device 20.

[0032] In this embodiment, even if the display unit 21 is turned off while the refuse collection vehicle 1 is traveling, the parts of the display system 10 other than the display unit 21 and the weighing device 6 are activated. For example, the power lamp 22 is on even when the display unit 21 is turned off.

[0033] As described above, by leaving each device, such as the weighing device 6, running even when the display unit 21 is turned off, the collected items can be weighed appropriately. That is, immediately after starting up the weighing device 6, the weighing value fluctuates somewhat due to an internal temperature rise. For this reason, in order to reduce errors in the weighing value, after starting up the weighing device 6, there are cases where the weighing device waits for a predetermined time before actually weighing. In this embodiment, by not stopping the weighing device 6 when the display unit 21 is turned off and by keeping it running, the collected items can be weighed appropriately without waiting as described above.

[0034] As described above, the display system 10 according to this embodiment has the following features: A display unit 21 is disposed at the rear of the vehicle and capable of displaying the weight of the objects to be weighed loaded on the vehicle; A control unit 30 that determines whether the vehicle is in a state where it can be driven or not, and when it is determined that the vehicle is in a state where it can be driven, executes control to automatically stop the display of the display unit 21; It is equipped with the following. By configuring in this way, it is possible to reduce the burden on the worker. That is, when the vehicle is in a state in which it is possible to drive, the display of the display unit 21 can be automatically stopped (turned off). This eliminates the need to manually turn off the display unit 21, and reduces the burden on the worker.

[0035] In addition, the control unit 30 When it is determined that the vehicle is in a state in which it cannot be driven, control is executed to automatically perform the display on the display unit 21. By configuring in this way, it is possible to reduce the burden on the worker. That is, when the vehicle is in a state where it cannot be driven (parked state), the display unit 21 can be automatically displayed (lit). This eliminates the need to manually turn on the display unit 21, and reduces the burden on the worker.

[0036] In addition, the control unit 30 When the parking brake 5 of the vehicle is released, the vehicle is determined to be in a state in which it can be driven; When the parking brake 5 is applied, it is determined that the vehicle is in a state in which it cannot be driven. With this configuration, it is possible to determine whether the vehicle is in a state in which it can be driven or not, by utilizing the parking brake 5, which is an existing device.

[0037] In addition, the vehicle It is a garbage collection vehicle 1. By configuring in this manner, in a refuse collection vehicle 1 that travels around a number of collection sites and repeatedly parks and departs, the manual task of switching the display on the display unit 21 can be eliminated, thereby reducing the burden on the worker.

[0038] Although each embodiment of the present invention has been described above, the present invention is not limited to the above configurations, and various modifications are possible within the scope of the invention described in the claims.

[0039] For example, the shapes of the components described in the above embodiment are merely examples and are not limited to the above shapes, etc. Specifically, the shapes and arrangements of the components of the display 20 (display 21, power lamp 22, tare button 23, and weighing button 24) are not limited to the above shapes, etc. and can be changed to any shape, etc.

[0040] In addition, in the present embodiment, an example has been shown in which the display device 20 is not provided with an operation unit for manually switching the display unit 21 on and off, but the present invention is not limited to this. For example, a configuration may be adopted in which the operation unit is provided in the display device 20, and the display unit 21 can be turned on and off by manual operation.

[0041] In addition, in the present embodiment, an example has been shown in which both turning on and off of the display unit 21 is performed automatically, but the present invention is not limited to this. For example, only turning off of the display unit 21 may be performed automatically. In this case, for example, a configuration can be adopted in which the display unit 21 is turned on by manually operating an operation unit provided on the display device 20.

[0042] In addition, in the present embodiment, an example has been shown in which the display unit 21 is controlled to be turned on and off based only on the state of the parking brake 5, but the present invention is not limited to this. For example, the display unit 21 may be controlled to be turned on and off based on the state of not only the parking brake 5 but also the foot brake. Specifically, even if the parking brake 5 is in an applied state, if the foot brake is applied, control may be executed to turn off the display unit 21. According to this, if a long stop is expected due to a railroad crossing, road construction, traffic lights, etc. while the refuse collection vehicle 1 is moving, it is possible to prevent the display unit 21 from displaying even if the parking brake 5 is in an applied state.

[0043] In the present embodiment, the control unit 30 uses the parking brake 5 to determine whether the vehicle is in a state where it can be driven or not, but the present invention is not limited to this. For example, the control unit 30 may use an instrument capable of detecting the driving state of the vehicle, such as an acceleration sensor (speed sensor), to determine whether the vehicle is in a state where it can be driven or not.

[0044] In addition, in this embodiment, an example is shown in which the tare button 23 and the weighing button 24 are provided on the display 20, but the present invention is not limited to this. For example, the above-mentioned buttons may not be provided on the display 20. In this case, the tare and weighing operations may be performed using the operation button 4.

[0045] In the present embodiment, the display system 10 is configured by the display device 20 and the control unit 30, but the present invention is not limited to this. For example, the display system 10 may include a parking brake 5 and a weighing device 6.

[0046] In addition, in the present embodiment, the display device 20 and the control unit 30 are provided as separate devices, but the present invention is not limited to this. For example, the control unit 30 may be included (built-in) in the display device 20.

[0047] In addition, in the present embodiment, the display system 10 is provided in the refuse collection vehicle 1, but the present invention is not limited to this. The display system 10 can be provided in various vehicles (commercial vehicles) capable of weighing objects to be weighed. [Explanation of symbols]

[0048] 1 Refuse collection vehicle 10 Display System 20 Display 30 Control section

Claims

1. A display unit is disposed at a rear portion of the vehicle and capable of displaying the weight of the objects to be weighed loaded on the vehicle; a control unit that determines whether the vehicle is in a state where it can be driven or not, and when it is determined that the vehicle is in a state where it can be driven, executes control to automatically stop displaying on the display unit; A display system comprising:

2. The control unit is When it is determined that the vehicle is in a state where it cannot be driven, a control is executed to automatically display the display unit. The display system of claim 1 .

3. The control unit is When the parking brake of the vehicle is released, the vehicle is determined to be in a state in which it can be driven; determining that the vehicle is in a state in which the parking brake is applied; A display system according to claim 1 or 2.

4. The vehicle is It is a garbage collection vehicle. The display system of claim 1 .

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