Forklift reversing radar alarm display device and method thereof

Abstract

The invention discloses a forklift reversing radar alarm display device and a method thereof. The problems that a probe of an existing forklift reversing radar alarm device is exposed and prone to damage, and the risk condition cannot be accurately judged are solved. The device comprises the buffer pad mounted on the rear baffle of the forklift and the radar sensor probes, the radar sensor probes are embedded into the buffer pad, and the detection surfaces of the probes are flush with the outer surface of the buffer pad, so that the probes can be prevented from being directly scratched and collided, and the transmission effect of radar signals can be ensured not to be affected; the overall reliability of the system is improved, the detection capacity is improved through the multiple radar sensor probes, the collision risk is reduced, and the structural appearance is attractive; the radar sensor probe, the audible and visual alarm and the displayer are all connected with the host, the audible and visual alarm adopts a three-level alarm mechanism, a layered progressive warning mode is adopted, the risk state is accurately judged, it is ensured that a driver takes correct countermeasures in time, and safety accidents are avoided.

Description

Technical Field

[0001] This application relates to the field of forklift technology, specifically to a forklift reversing radar alarm display device. Background Technology

[0002] Forklifts, as indispensable material handling tools in industrial settings, have greatly improved logistics efficiency and operational automation. However, forklift accidents are frequent, causing serious personal injury and property damage. Accidents often occur when forklifts are turning or crossing intersections. Due to the forklift's structure and the limitations of the operating environment, blind spots exist, causing drivers to fail to see pedestrians in time, leading to serious collisions and crushing accidents. Forklift accidents are often caused by factors such as driver violations, obstructed vision, speeding, and poor management.

[0003] There are also some radar reversing radar systems on the market that measure the distance to obstacles behind the forklift and sound an alarm via a buzzer, but they generally have some shortcomings: The alarm method is singular and lacks warning levels: Most systems are only equipped with a simple buzzer, and their alarm method is singular. Whether the obstacle is slowly approaching from 5 meters away or urgently approaching from within 1 meter, the same sound is emitted, making it impossible for the driver to quickly and accurately judge the urgency of the risk; There is a lack of visual prompts: Relying solely on sound alarms, the driver cannot intuitively understand the specific location, number, and distance of obstacles.

[0004] Chinese patent CN203543829U discloses a forklift reversing radar alarm device. It features a display screen mounting bracket on the overhead guard on the left side of the driver's cab, with a radar display screen and alarm mounted on the bracket; two sensors are located on the rear counterweight guard plate of the forklift. The problem with this device is:

[0005] 1. Exposed probe, easily damaged: The radar probe is directly installed on the outer surface of the counterbalance guard plate at the rear of the forklift. When the forklift is reversing, turning or moving through narrow spaces, the probe is very likely to collide or scratch with the shelves, walls, other goods or equipment; at the same time, the exposed probe is also easy to fall off or be damaged by external forces.

[0006] 2. Limited detection capability: With only two probes, it is difficult to effectively cover the width of the entire blind spot behind the forklift. Blind spots are easily generated in the area between the probes or in the side and rear, making it impossible to effectively detect vehicles or pedestrians approaching from the side, resulting in a significant increase in the risk of side or side and rear collisions.

[0007] 3. Limited alarm methods and inability to accurately assess risk: The radar display continuously shows the distance, starting from 3 meters, prompting the alarm to issue a voice alert. However, the same or similar alert sounds may be used from 3 meters to dangerous distances (such as 0.3 meters), leading to misjudgment and accidents.

[0008] 4. Exposed sensors can also affect the overall aesthetics of the vehicle. Summary of the Invention

[0009] Therefore, this application provides a forklift reversing radar alarm display device and method to solve the problems of existing forklift reversing radar alarm devices having exposed probes that are easily damaged and unable to accurately determine risk conditions.

[0010] To achieve the above objectives, this application provides the following technical solution:

[0011] In a first aspect, a forklift reversing radar alarm display device includes: a rear panel installed on the forklift, a buffer pad arranged along the length direction of the rear panel, and a plurality of radar sensor probes. The buffer pad is provided with a plurality of through holes in sequence along the length direction, so that the plurality of radar sensor probes are embedded into the plurality of through holes one by one, and the detection surface of each radar sensor probe is flush with the outer surface of the buffer pad.

[0012] It also includes an audible and visual alarm, a display, and a main unit. The audible and visual alarm and the display are located in the center console area in front of the forklift's cab. The radar sensor probe, the audible and visual alarm, and the display are all connected to the main unit. The audible and visual alarm adopts a three-level alarm mechanism: the first level is a safety reminder state, the second level is a warning state, and the third level is an emergency state.

[0013] Optionally, the radar sensor probe, the buffer pad, and the rear baffle are connected by sealant.

[0014] Optionally, the cushioning pad is made of rubber or polyurethane;

[0015] The external connection wire of the radar sensor probe is covered with reflective tape.

[0016] Optionally, the radar sensor probes are of four types, with a spacing of 25-35cm between adjacent radar sensor probes and a radiation angle of 145°-155°.

[0017] The vertical distance between the radar sensor probe and the ground is 60-70cm.

[0018] Optionally, the main unit is connected to the forklift's battery power supply;

[0019] The audible and visual alarm and the display are located on the dashboard of the central control panel.

[0020] Optionally, a camera is installed on the top of the rear of the forklift to collect image information of the detection area and send the collected information to the host.

[0021] Optionally, it also includes a vibrator installed inside the seat of the driver's cab and connected to the main unit.

[0022] Secondly, a forklift reversing radar alarm method, using the aforementioned forklift reversing radar alarm display device, includes the following steps:

[0023] S1. The radar sensor probe at the rear of the forklift continuously emits signals to continuously monitor the area behind the forklift in order to obtain distance and relative speed information of obstacles, as well as to collect image information of obstacles through the camera, and send the corresponding information to the host.

[0024] S2. The host computer comprehensively judges the risk level of the obstacle based on the received information, controls the audible and visual alarm device to execute the alarm mode corresponding to the risk level, and displays the corresponding information and risk level on the display screen; the risk level is specifically divided into the following three levels:

[0025] First risk level: If the current distance to the obstacle is determined to be greater than the first set distance H1 and the relative speed of the obstacle is less than V1, then the sound and light alarm will light up green, but no voice prompt will be issued.

[0026] Second risk level: If the current distance to the obstacle is determined to be less than the first preset distance H1 but greater than the second preset distance H2, and the relative speed is less than V1, then the audible and visual alarm will illuminate a yellow light and flash slowly, and an intermittent voice prompt will be issued; or,

[0027] If the relative speed of the obstacle is determined to be greater than V1 and less than V2, the audible and visual alarm will light up a yellow light and flash slowly, and an intermittent voice prompt will be issued.

[0028] Third risk level: If the current distance to the obstacle is determined to be less than the second preset distance H2, then the audible and visual alarm will light up red and flash rapidly, and a continuous voice prompt will be issued; or,

[0029] If the relative speed of the obstacle is determined to be greater than V2, the sound and light alarm will be activated to light up a red light and flash rapidly, while a continuous voice prompt will be issued.

[0030] Under the third risk level, the host controls the vibrator to generate vibration.

[0031] Optionally, in step S2, the first set distance H1 is 5m, the second set distance H2 is 3m; V1 is 5km / hr, and V2 is 10km / hr.

[0032] Compared with the prior art, this application has at least the following beneficial effects:

[0033] 1. Based on further analysis and research of existing technical problems, this application provides a forklift reversing radar alarm display device. A dedicated buffer pad and multiple radar sensor probes are installed along the length of the forklift's rear tailgate. Through holes precisely matched to the number and size of the radar sensor probes are precisely formed on the buffer pad, allowing the radar sensor probes to be embedded within it. This ensures that the detection surface of the sensor probes does not protrude from the surface of the buffer pad, providing physical protection for the radar sensor probes from direct scratches and impacts, while also ensuring that the transmission effect of the radar signal is not affected, thus improving the overall reliability of the system. Multiple radar sensor probes enhance detection capabilities, reduce collision risk, and improve the overall aesthetic appearance. Simultaneously, the radar sensor probes, audible and visual alarm, and display are all connected to the main unit. The audible and visual alarm employs a three-level alarm mechanism: the first level is a safety alert, the second level is a warning, and the third level is an emergency. This layered and progressive warning method accurately assesses the risk situation, ensuring that the driver takes timely and correct measures to avoid accidents.

[0034] 2. This application provides unified power to all electrical equipment through the vehicle's internal battery, and also installs a camera on the top of the rear of the forklift to collect real-time image information of the rear detection area. This image data is transmitted synchronously with the radar detection information to the host for processing, thereby providing the driver with a more comprehensive and intuitive panoramic view, assisting him in accurately judging the situation behind and taking timely countermeasures.

[0035] 3. The driver's seat in this application is also equipped with a vibrator. When the main unit determines that the obstacle has entered the third risk level, the vibrator will be activated and generate a tactile warning, prompting the driver to take immediate measures such as braking. This effectively improves the alarm effectiveness in noisy environments and also has the advantages of low cost and simple installation.

[0036] 4. This application also provides a forklift reversing radar alarm method. By specifically classifying the risk levels and establishing specific alarm modes corresponding to each level, when the system detects an obstacle behind, it can automatically trigger the matching alarm mode based on real-time data, thereby improving the accuracy and reliability of the alarm system and ensuring that the driver can take corresponding measures in a timely manner according to different risk levels, thus improving the safety of forklift reversing operations. Attached Figure Description

[0037] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are capable of making conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0038] Figure 1 A schematic diagram of the structure of a forklift reversing radar alarm display device provided in one embodiment of this application. Figure 1 ;

[0039] Figure 2 for Figure 1 The rear view shown;

[0040] Figure 3 for Figure 1 A schematic diagram of the structure of the buffer pad and radar sensor probe in the middle;

[0041] Figure 4 This is a schematic diagram of the wiring connection of a forklift reversing radar alarm display device provided in one embodiment of this application;

[0042] Figure 5 This is a circuit block diagram of a forklift reversing radar alarm display device provided in one embodiment of this application.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Forklift; 101. Cab; 102. Rear bumper; 2. Buffer pad; 3. Main unit; 4. Radar sensor probe; 5. Audible and visual alarm; 6. Display; 7. Camera; 8. Battery; 9. Vibrator. Detailed Implementation

[0045] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "including," "comprising," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0047] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to indicate the general relative positional relationship for the purpose of intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationship in the actual product.

[0048] One embodiment of this application, such as Figures 1-5 As shown, a forklift reversing radar alarm display device includes: a rear panel 102 installed on the forklift 1, a buffer pad 2 (also called a shock-absorbing pad or anti-collision pad) arranged along the length direction of the rear panel 102, and a plurality of radar sensor probes 4. The buffer pad 2 has a plurality of through holes opened sequentially along the length direction, so that the plurality of radar sensor probes 4 are embedded into the plurality of through holes one by one, and the detection surface of each radar sensor probe 4 is flush with the outer surface of the buffer pad 2, so that the buffer pad 2 provides physical protection for the radar sensor probe 4 without affecting the transmission and reception of radar waves.

[0049] It also includes an audible and visual alarm 5, a display 6, and a main unit 3. The audible and visual alarm 5 and the display 6 are located in the center console area in front of the cab 101 of the forklift 1, and can be specifically set in the instrument panel area on the left front side of the cab 101 for convenient control and operation by the driver. The radar sensor probe 4, the audible and visual alarm 5, and the display 6 are all connected to the port of the main unit 3. The radar sensor probe 4 is used to detect the moving distance and relative speed of obstacles (including people and objects) and send this information to the main unit 3. The main unit 3 controls the audible and visual alarm 5 to perform graded audible and visual alarms and controls the display 6 to update the corresponding information synchronously. The alarm prompts include optical and acoustic methods. The acoustic alarm provides two modes: intuitive voice type and traditional prompt type. The intuitive voice type will issue clear voice commands such as "Please pay attention to the rear" and "Danger! Stop immediately!". The traditional prompt type uses intermittent warning sounds of "Beep! Beep! Beep!" or continuous rapid beeping sounds to adapt to different environments and operating habits.

[0050] The aforementioned audible and visual alarm system employs a three-level alarm mechanism: the first level is a safety alert, the second level is a warning, and the third level is an emergency. This layered and progressive warning approach ensures accurate transmission of risk information and improves the driver's response efficiency.

[0051] Preferably, the radar sensor probe 4, the buffer pad 2, and the rear baffle 102 are connected by sealant.

[0052] More preferably, the cushioning pad 2 is made of rubber or polyurethane;

[0053] The connecting wire (wiring cable) of the radar sensor probe 4 is routed twice on the rear panel 102 of the forklift 1, and the connecting wire is covered with reflective tape to serve as a warning and anti-collision function, enhance visibility, and protect the wire itself.

[0054] Preferably, there are four radar sensor probes 4, the spacing between adjacent radar sensor probes 4 is 25-35cm, and the radiation angle of the radar sensor probes 4 is 145°-155°; the total length of the buffer pad 2 is 130cm, which can be adjusted according to the actual situation.

[0055] The vertical distance between the radar sensor probe 4 and the ground is 60-70cm. Specifically, the position can be: the rear baffle 102 is 65cm from the ground. Then, the radar sensor probe 4 and the buffer pad 2 are fixed to the rear baffle 102 with the above-mentioned sealant.

[0056] For forklifts operating on 1 battery and 8 loads, a radar anti-collision device (radar sensor probe 4) with a voltage of 12V or 24V can be selected.

[0057] The radar collision avoidance device's sensor probes have a theoretical range of 2 meters, and the radiation angle of a single radar sensor probe 4 is 70°. Because the rear of the forklift 1 is an oval shape, the radiation angle of the four radar sensor probes 4 is approximately 150°. When the forklift 1 is engaged in reverse gear, the radar sensor probes 4, the audible and visual alarm 5, and the display 6 are activated. When the forklift approaches an obstacle (person or object), the display 6 shows the closest sensing distance value, and the audible and visual alarm 5 sends an alarm signal, allowing the driver to respond promptly.

[0058] Preferably, the host 3 is connected to the battery 8 of the forklift 1, and the battery 8 inside the forklift 1 supplies power to all electrical equipment.

[0059] More preferably, a camera 7 is provided on the top of the rear of the forklift 1 to collect image information of the detection area and send the collected information to the host 3.

[0060] More preferably, it also includes a vibrator 9, which is installed inside the seat of the cab 101 and is connected to the main unit 3.

[0061] The vibrator 9 has the advantages of low cost and simple installation, which effectively improves the alarm effectiveness in noisy environments. When the host 3 determines that the obstacle has entered the third risk level, the vibrator 9 will be activated and generate a tactile warning, prompting the driver to take immediate measures such as braking.

[0062] This application also provides a forklift reversing radar alarm method, which uses the above-mentioned forklift reversing radar alarm display device and includes the following steps:

[0063] S1. The radar sensor probe 4 at the rear of the forklift 1 continuously emits signals to continuously monitor the area behind the forklift 1, so as to obtain the distance information and relative speed information of the obstacle, as well as the image information of the obstacle through the camera 7, and send the corresponding information to the host 3.

[0064] S2 and host 3 comprehensively judge the risk level of the obstacle based on the received information, and control the audible and visual alarm device to execute the alarm mode corresponding to the risk level, and display the corresponding information and risk level on the display screen; the risk level is specifically divided into the following three levels:

[0065] First risk level: If it is determined that the current distance of the obstacle is greater than the first set distance H1 and the relative speed of the obstacle is less than V1, then the sound and light alarm 5 will light up green, but no voice prompt will be issued.

[0066] Second risk level: If the current distance to the obstacle is determined to be less than the first preset distance H1 but greater than the second preset distance H2, and the relative speed is less than V1, then the audible and visual alarm 5 will illuminate a yellow light and flash slowly, and emit an intermittent buzzing sound or provide a corresponding voice prompt to warn the driver of increased risk; or,

[0067] If the relative speed of the obstacle is determined to be greater than V1 and less than V2, the sound and light alarm 5 will be controlled to light up a yellow light and flash slowly, and emit an intermittent buzzing sound or give a corresponding voice prompt.

[0068] Third risk level: If the current distance to the obstacle is determined to be less than the second preset distance H2, the audible and visual alarm 5 will illuminate a red light and flash rapidly, and emit a continuous buzzing sound or provide a corresponding voice prompt. In this case, the driver must immediately take braking measures; or,

[0069] If the relative speed of the obstacle is determined to be greater than V2, the sound and light alarm 5 will be controlled to light up a red light and flash rapidly, while emitting a continuous buzzing sound or giving a corresponding voice prompt.

[0070] Under the third risk level, the host 3 controls the vibrator 9 to generate vibration.

[0071] In step S2, the first set distance H1 is 5m, the second set distance H2 is 3m; V1 is 5km / hr, and V2 is 10km / hr.

[0072] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A forklift reversing radar alarm display device, characterized in that, include: The rear panel of the forklift is installed, along the length of the rear panel, and a buffer pad and multiple radar sensor probes are arranged. The buffer pad has multiple through holes in sequence along the length, so that the multiple radar sensor probes are embedded into the multiple through holes one by one, and the detection surface of each radar sensor probe is flush with the outer surface of the buffer pad. It also includes an audible and visual alarm, a display, and a main unit. The audible and visual alarm and the display are located in the center console area in front of the forklift's cab. The radar sensor probe, the audible and visual alarm, and the display are all connected to the main unit. The audible and visual alarm adopts a three-level alarm mechanism: the first level is a safety reminder state, the second level is a warning state, and the third level is an emergency state.

2. The forklift reversing radar alarm display device according to claim 1, characterized in that, The radar sensor probe, the buffer pad, and the rear baffle are connected by sealant.

3. The forklift reversing radar alarm display device according to claim 1, characterized in that, The cushioning pad is made of rubber or polyurethane; The external connection wire of the radar sensor probe is covered with reflective tape.

4. The forklift reversing radar alarm display device according to claim 1, characterized in that, The radar sensor probes are of four types, with a spacing of 25-35cm between adjacent radar sensor probes and a radiation angle of 145°-155°. The vertical distance between the radar sensor probe and the ground is 60-70cm.

5. The forklift reversing radar alarm display device according to claim 1, characterized in that, The main unit is connected to the forklift's battery power supply; The audible and visual alarm and the display are located on the dashboard of the central control panel.

6. The forklift reversing radar alarm display device according to claim 1, characterized in that, A camera is installed on the top of the rear of the forklift to collect image information of the detection area and send the collected information to the host.

7. The forklift reversing radar alarm display device according to claim 1, characterized in that, It also includes a vibrator, which is installed inside the seat in the driver's cab and connected to the main unit.

8. A method for alarming a forklift reversing radar, characterized in that, The forklift reversing radar alarm display device according to claim 7 includes the following steps: S1. The radar sensor probe at the rear of the forklift continuously emits signals to continuously monitor the area behind the forklift in order to obtain distance and relative speed information of obstacles, as well as to collect image information of obstacles through the camera, and send the corresponding information to the host. S2. The host computer comprehensively judges the risk level of the obstacle based on the received information, controls the audible and visual alarm device to execute the alarm mode corresponding to the risk level, and displays the corresponding information and risk level on the display screen; the risk level is specifically divided into the following three levels: First risk level: If the current distance to the obstacle is determined to be greater than the first set distance H1 and the relative speed of the obstacle is less than V1, then the sound and light alarm will light up green, but no voice prompt will be issued. Second risk level: If the current distance to the obstacle is determined to be less than the first preset distance H1 but greater than the second preset distance H2, and the relative speed is less than V1, then the audible and visual alarm will illuminate a yellow light and flash slowly, and an intermittent voice prompt will be issued; or, If the relative speed of the obstacle is determined to be greater than V1 and less than V2, the audible and visual alarm will light up a yellow light and flash slowly, and an intermittent voice prompt will be issued. Third risk level: If the current distance to the obstacle is determined to be less than the second preset distance H2, then the audible and visual alarm will light up red and flash rapidly, and a continuous voice prompt will be issued; or, If the relative speed of the obstacle is determined to be greater than V2, the sound and light alarm will be activated to light up a red light and flash rapidly, while a continuous voice prompt will be issued. Under the third risk level, the host controls the vibrator to generate vibration.

9. The forklift reversing radar alarm method according to claim 8, characterized in that, In step S2, the first set distance H1 is 5m, the second set distance H2 is 3m; V1 is 5km / hr, and V2 is 10km / hr.

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