Forklift visual field auxiliary device and control method

Abstract

The invention discloses a forklift visual field auxiliary device which comprises an image obtaining part arranged on a forklift portal and a display part arranged on the side, close to a forklift body, of the forklift portal. The display part has a transparent state and a display state for displaying the real-time image and / or video in front of the forklift acquired by the image acquisition part in real time; a display screen is arranged in the direction of a visual blind area of a driver, and the display portion is in signal connection with a control portion used for controlling the display portion to be switched between a transparent state and a display state. Real-time images in front of the pallet fork are obtained through the camera, and the obtained view images are displayed in real time through the display screen in the view direction, so that the view in a blind area in front of the pallet fork can be provided when a driver normally drives, and the safety performance is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of forklifts, and specifically to a forklift vision assistance device and a control method therefor. Background Art

[0002] In the current logistics warehousing and transportation fields, forklifts, as key loading and unloading equipment, their operation efficiency and safety are directly related to the smoothness and stability of the entire logistics chain. However, in actual operation, a significant problem during forklift stacking operations cannot be ignored: when the forks carry high loads, these loads often completely block the direct front vision of the forklift driver. During driving, the forklift driver cannot directly observe obstacles or potential risks in front and can only rely on manual command or reverse driving, which undoubtedly greatly reduces the operation efficiency and increases the likelihood of accidents.

[0003] Currently, although there are some auxiliary systems based on sensors or radars in the market, these systems often have problems such as high cost, complex installation, and difficult maintenance, and in actual applications, their stability and reliability still need to be further improved. Therefore, how to effectively solve the problem of forklift loads blocking the vision has become a major issue that urgently needs to be overcome in the current forklift technology field. Summary of the Invention

[0004] The purpose of the present invention is to provide a forklift vision assistance device and a control method therefor to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A forklift vision assistance device includes an image acquisition unit disposed on the forklift mast and a display unit disposed on the side of the forklift mast close to the forklift body.

[0007] The display unit includes a transparent state and a display state for presenting in real time the real-time image and / or video in front of the forklift acquired by the image acquisition unit.

[0008] The display unit is signal-connected to a control unit for controlling the conversion of the display unit between the transparent state and the display state.

[0009] As a further aspect of the present invention: the image acquisition unit is a camera, and the image acquisition unit is disposed at the upper end of the upper crossbeam of the forklift mast.

[0010] As a further aspect of the present invention: the display unit is a display panel, and the display panel is an electrochromic glass or film.

[0011] As a further aspect of the present invention: the upper and lower ends of the display panel are respectively fixedly connected to the upper crossbeam and the middle crossbeam of the forklift mast through an upper bracket and a lower bracket.

[0012] As a further solution of the present invention: a projection unit for real-time display on the display unit is provided on the forklift body.

[0013] As a further solution of the present invention: the projection unit includes a projector, and the projector is connected to the forklift body through a support frame.

[0014] As a further solution of the present invention: the control unit is in signal communication with the projection unit and the display unit, and the control unit is electrically connected to the display unit.

[0015] A control method for a forklift vision assistance device includes the following steps:

[0016] Step 1: Start the forklift, and the display unit is in a transparent state;

[0017] Step 2: Detect the working state of the forklift forks;

[0018] Step 3: If the forks are in the state of having goods, execute Step 4; if the forklift forks are in the state of having no goods, execute Step 5;

[0019] Step 4: Start the image acquisition unit to acquire real-time images in front of the forklift and adjust the display unit to the display state, and display the size front images and / or videos acquired by the image acquisition unit in real time through the display unit;

[0020] Step 5: Adjust the display unit to the transparent state and turn off the image acquisition unit.

[0021] As a further solution of the present invention: the working state of the forklift forks is judged by the control unit by acquiring the real-time pressure of the hydraulic pipeline of the forklift. A judgment threshold is set. If the acquired real-time pressure exceeds the set judgment threshold, the forklift is in the state of having goods, otherwise it is in the state of having no goods.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. In the present application, by setting a display screen in the blind area direction of the driver's vision, when the forklift forks carry goods, real-time images in front of the forks are acquired through a camera and the acquired vision images are displayed in real time through the display screen in this vision direction. Therefore, the vision in the blind area in front of the forks can be provided when the driver is driving normally, greatly improving the safety performance;

[0024] 2. In the present application, when the vision in front of the mast is good, it will be in a transparent state and will not block the driver's vision;

[0025] 3. The equipment structure of the present application is simple, the cost is low, and the intelligent level of forklift operation is improved, significantly enhancing the safety factor of loading and unloading and transportation. Description of the Drawings

[0026] Figure 1 This is a schematic structural diagram of the vision assistance device for this embodiment;

[0027] Figure 2 This is a schematic structural diagram of the display unit for this embodiment;

[0028] Figure 3 This is a schematic structural diagram of the projection unit for this embodiment;

[0029] Figure 4 This is a schematic diagram of the usage state of the usage assistance device for this embodiment when there is cargo on the forklift forks;

[0030] Figure 5 This is a schematic diagram of the usage state of the usage assistance device for this embodiment when there is no cargo on the forklift forks;

[0031] Figure 6 This is a schematic diagram of the working process of the control method for this embodiment;

[0032] In the figure: 1 - Image acquisition unit, 2 - Display unit, 3 - Projection unit, 4 - Forklift mast, 5 - Forklift body. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figures 1-5 , in the embodiments of the present invention, a forklift vision assistance device includes an image acquisition unit 1 disposed on the forklift mast and a display unit 2 disposed on the side of the forklift mast close to the forklift body. In this embodiment, the image acquisition unit 1 is a camera, and the image acquisition unit 1 is disposed at the upper end of the upper crossbeam of the forklift mast 4.

[0035] The display unit 2 includes a transparent state and a display state for presenting in real time the real-time image and / or video in front of the forklift acquired by the image acquisition unit 1. In this embodiment, the display unit 2 is a display panel 21. The upper and lower ends of the display panel 21 are respectively fixedly connected to the upper crossbeam and the middle crossbeam of the forklift mast through an upper bracket 22 and a lower bracket 23. The display panel 21 is an electrochromic glass or film, that is, the transparent state of the display panel 21 can be changed by energization. When not energized, it is in a fogged state, and when energized, it is in a transparent state. Of course, not only electrochromic glass or film, but also other materials that can switch between a transparent state and a non-transparent state can be used, and they will not be listed one by one here.

[0036] A projection unit 3 for real-time display on the display unit 2 is provided on the forklift main body. The projection unit 3 includes a projector 31, and the projector 31 is connected to the forklift main body 5 through a support frame 32.

[0037] The display unit 2 is signal-connected to a control unit for controlling the conversion of the display unit 2 between the transparent state and the display state. The control unit is signal-connected to the projection unit 3 and the display unit 2, and is electrically connected to the display unit 2. In addition, the control unit is also connected to the forklift CAN bus for obtaining the overall state of the forklift, so as to adjust the conversion of the display unit between the transparent state and the display state.

[0038] A control method for a forklift vision assistance device includes the following steps:

[0039] Step 1: Start the forklift, and the display unit 2 is in the transparent state;

[0040] Step 2: Detect the working state of the forklift forks. The working state of the forklift forks is judged by the control unit obtaining the real-time pressure of the hydraulic pipeline of the forklift. A judgment threshold is set. If the obtained real-time pressure exceeds the set judgment threshold, the forklift is in the state of having goods, otherwise it is in the state of having no goods. In this embodiment, the controller is connected to the forklift master control through the forklift CAN bus and obtains the pressure of the forklift attachment oil circuit through the CAN bus. Since a pressure sensor is provided in the forklift attachment oil circuit and the real-time pressure is uploaded through the CAN bus, the controller can obtain the pressure of the oil circuit in real time through the CAN bus;

[0041] Step 3: If the forks are in the state of having goods, execute Step 4; if the forklift forks are in the state of having no goods, execute Step 5;

[0042] Step 4: Start the image acquisition unit 1 to acquire the real-time image in front of the forklift and adjust the display unit 2 to the display state, and the size front image and / or video acquired by the image acquisition unit 1 are displayed in real time through the display unit 2, as shown in the appendix Figure 4 shown;

[0043] Step 5: Adjust the display unit 2 to the transparent state and turn off the image acquisition unit 1, as shown in the appendix Figure 5 shown.

[0044] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0045] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A forklift vision auxiliary device, characterized in that: It comprises an image acquisition unit (1) arranged on a forklift door frame and a display unit (2) arranged on a side of the forklift door frame close to a forklift body; The display unit (2) includes a transparent state and a display state for presenting in real time the real-time image and / or video in front of the forklift acquired by the image acquisition unit (1); The display part (2) is signal-connected to a control part for controlling the display part (2) to switch between a transparent state and a display state.

2. A forklift vision assistance device according to claim 1, characterized in that: The image acquisition unit (1) is a camera, and the image acquisition unit (1) is arranged at the upper end of the crossbeam on the forklift door frame.

3. A forklift vision assist device according to claim 1, characterized in that: The display part (2) is a display flat panel (21), and the display flat panel (21) is electrochromic glass or a film.

4. A forklift vision auxiliary device according to claim 3, characterized in that: The upper and lower ends of the display panel (21) are fixedly connected to the upper crossbeam and the middle crossbeam of the forklift door frame through an upper bracket (22) and a lower bracket (23) respectively.

5. A forklift vision assistance device according to claim 4, characterized in that: The forklift body is provided with a projection unit (3) for real-time display on the display unit (2).

6. A forklift vision assistance device according to claim 5, characterized in that: The projection unit (3) comprises a projector (31), and the projector (31) is connected to the forklift body (5) via a support frame (32).

7. The forklift vision assist device according to claim 5, characterized in that: The control unit is in signal communication with the projection unit (3) and the display unit (2), and the control unit is in electrical communication with the display unit (2).

8. A method for controlling a forklift vision assistance device using any one of 1-7 forklift vision assistance devices, characterized in that: The following steps are involved: Step 1, start the forklift, and the display unit (2) is in a transparent state; Step 2: Check the working status of the forklift forks; Step 3: If the forklift is in the state of having cargo, then go to step 4; if the forklift is in the state of having no cargo, then go to step 5; Step 4, starting the image acquisition unit (1) to acquire a real-time image in front of the forklift and adjusting the display unit (2) to a display state, and displaying the size front image and / or video acquired by the image acquisition unit (1) in real time through the display unit (2); Step 5: The display unit (2) is adjusted to a transparent state and the image acquisition unit (1) is closed.

9. A control method for a forklift vision assist device according to claim 8, characterized in that: The working state of the forklift fork is judged by the control unit by obtaining the real-time pressure of the hydraulic pipeline of the forklift and setting a judgment threshold. If the obtained real-time pressure exceeds the set judgment threshold, the forklift is in a state of cargo, otherwise it is in a state of no cargo.

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