Automobile lifting device and lifting method

Abstract

The invention relates to the technical field of automobile parking control, in particular to an automobile lifting device and method.The automobile lifting device comprises a bearing plate, a first induction module, a control module and a driving assembly, and the driving assembly is in transmission connection with the bearing plate; the first sensing module is installed on the bearing plate and used for generating a corresponding first signal according to the height of the water level below the bearing plate. The control module is electrically connected with the first sensing module and the driving assembly, and the control module is used for controlling the driving assembly to move according to the first signal so as to drive the bearing plate to ascend and descend. According to the automobile lifting device, the situation of water inflow can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parking control, and in particular to an automobile lifting device and a lifting method. Background Art

[0002] A car is a common means of transportation for families, which realizes its driving function through rotating wheels.

[0003] A car generally includes a body and wheels. The wheels can bear the weight of the body and form a certain ground clearance between the body and the ground to prevent water from entering the body.

[0004] In the related art, the ground clearance is generally fixed, which makes the car vulnerable to the invasion of accumulated water when parked, causing water to enter and damage important components such as the engine. Summary of the invention

[0005] In view of this, the present application provides a car lifting device and a lifting method to reduce water ingress.

[0006] Specifically, the following technical solutions are included:

[0007] A first aspect of the present application provides a car lifting device, the car lifting device comprising a bearing plate, a first sensing module, a control module and a driving assembly, wherein:

[0008] The driving assembly is drivingly connected to the carrying plate;

[0009] The first sensing module is mounted on the supporting plate and is used to generate a corresponding first signal according to the height of the water level below the supporting plate;

[0010] The control module is electrically connected to the first sensing module and the driving component respectively, and the control module is used to control the movement of the driving component according to the first signal to drive the carrying plate to rise and fall.

[0011] Optionally, the first sensing module includes a water level sensor, the driving assembly includes a first motor, the water level sensor is opposite to a side of the supporting plate for supporting the car, and the first motor is transmission-connected to the supporting plate for driving the supporting plate to rise and fall.

[0012] Optionally, the car lifting device includes a second sensing module, which is electrically connected to the control module and is used to transmit a second signal of the car located on the supporting plate to the control module, and the control module determines the ground clearance of the car based on the second signal.

[0013] Optionally, the second sensing module includes a photoresistor board and a light emitting module, the light emitting module and the photoresistor board are respectively located on two opposite sides of the supporting board, and the light emitting module is used to generate a light signal for the photoresistor board so that the current of the photoresistor board changes to generate the second signal.

[0014] Optionally, the light emitting module includes a second motor and a laser generator, the second motor can move along the length direction of the supporting plate, the laser generator is installed on the second motor and can move along the thickness direction of the supporting plate, and the laser generator faces the photoresistor board.

[0015] Optionally, the vehicle lifting device includes a display module, which is used to display the working status of the driving component and can output a signal to the control module to control the driving component to drive the carrying plate to move up and down.

[0016] Optionally, the car lifting device includes a solar charging panel and a flip motor, the flip motor is transmission-connected to the supporting plate and is used to drive the supporting plate to flip around a first axis, and the solar charging panel is bonded and connected to one side of the supporting plate.

[0017] Optionally, the control module includes a pressure sensor, and the pressure sensor is installed on a side of the supporting plate for supporting the automobile.

[0018] A second aspect of the present application provides a lifting method, which is applied to the automobile lifting device according to the above technical solution, and the lifting method comprises:

[0019] Acquire a first signal through the first sensing module;

[0020] Obtaining the water level below the carrying plate according to the first signal through the control module, and obtaining the expected height of the carrying plate according to the water level and the safety height;

[0021] The control module is used to raise or lower the carrying plate according to the current height and the expected height of the carrying plate.

[0022] Optionally, an uninstallation process is also included, and the uninstallation process includes:

[0023] Obtaining the ground clearance of the vehicle located on the carrying plate through the first sensing module and the control module;

[0024] The control module compares the ground clearance and the water level. If the ground clearance is greater than the water level, it is determined that the vehicle can be unloaded from the load plate. If the ground clearance is less than the water level, it is determined that the vehicle cannot be unloaded from the load plate.

[0025] The beneficial effects of the technical solution provided by the embodiment of the present application include at least: the load-bearing plate can bear the weight of the car. The first sensing module can feedback the water level information below the load-bearing plate to the control module through the first signal, and drive the load-bearing plate to rise and fall through the driving component, which is conducive to driving the car away from the accumulated water when the water level changes, thereby reducing the situation where the car is damaged by water ingress. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic structural diagram of a car lifting device provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of the structure of a photoresistor board provided in an embodiment of the present application;

[0029] Figure 3 A schematic diagram of a lifting method provided in an embodiment of the present application;

[0030] Figure 4 A flowchart of an uninstallation process provided in an embodiment of the present application.

[0031] The reference numerals in the figures represent respectively:

[0032] 1. Loading plate;

[0033] 21. Water level sensor;

[0034] 31. The first motor;

[0035] 4. second sensing module; 41. photoresistor board; 411. photoresistor; 412. insulating layer; 42. light emitting module; 421. second motor; 422. laser generator;

[0036] 5. Solar charging panel;

[0037] 6. Pressure sensor.

[0038] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as the basis, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientation. When the product is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.

[0041] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0042] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0043] The first aspect of the present application provides a car lifting device, such as Figure 1 As shown, the car lifting device includes a bearing plate 1, a first sensing module, a control module and a driving assembly, wherein:

[0044] The driving assembly is transmission-connected to the carrier plate 1;

[0045] The first sensing module is installed on the supporting plate 1 and is used to generate a corresponding first signal according to the height of the water level below the supporting plate 1;

[0046] The control module is electrically connected to the first sensing module and the driving component respectively. The control module is used to control the movement of the driving component according to the first signal to drive the carrying plate 1 to rise and fall.

[0047] It is understandable that the load-bearing plate 1 can bear the weight of the car. The first sensing module can feed back the water level information below the load-bearing plate 1 to the control module through the first signal, and drive the load-bearing plate 1 to rise and fall through the driving component, which is conducive to driving the car away from the accumulated water when the water level of the load-bearing plate 1 changes, so as to reduce the situation where the car is damaged by water ingress.

[0048] In the embodiment of the present application, the ground clearance of a car refers to the distance between the lowest point of the car except the wheels and the support plane. The ground clearance will change with the change of the car load, so it can be divided into the ground clearance when unloaded, loaded, and fully loaded (the ground clearance of the car when it is stationary and fully loaded is also called the minimum ground clearance). Ground clearance is one of the important parameters that characterize the passability of a car. Family cars generally travel on flat roads in cities, so the ground clearance is small. In order to facilitate crossing obstacles, off-road vehicles have a relatively large ground clearance. The advantages of large ground clearance are reflected in two aspects. First, during the driving process of the car, the ground clearance is large, the passability of the car is better, the ability to pass obstacles or uneven ground is stronger, and the wading ability of the car is also stronger. On the other hand, the ground clearance of the car is large, and when facing the ground water caused by bad weather (such as heavy rain), the possibility of water entering the car compartment and the engine can be greatly reduced. However, if the ground clearance is large, the center of gravity of the whole vehicle will be higher accordingly, and the stability of the car will decrease. Therefore, when designing a car, the ground clearance is usually designed within a reasonable range: when unloaded, the ground clearance of a family car is generally 110-200mm, the ground clearance of an SUV is generally 200-250mm, the ground clearance of a truck is generally 250-300mm, and the ground clearance of an off-road vehicle is generally 210-370mm. If the ground clearance is further increased, the stability and safety of the car may be affected. Accordingly, the height of the load-bearing plate 1 plus the ground clearance of the car is the actual height position of the car when parked. The higher the height position, the more unfavorable it is for the stability and safety of the car. Therefore, the control module is used to realize the lifting of the load-bearing plate 1 through the drive assembly, which is conducive to maintaining the car at a lower height while preventing the car from entering water.

[0049] In the embodiment of the present application, the driving assembly can be arranged as a component that guides the carrying plate 1, so that the carrying plate 1 can be lifted or lowered along its thickness direction under the action of the driving assembly.

[0050] In an embodiment of the present application, the driving assembly may include a driving motor and a worm gear lift. The motor drives the worm of the worm gear lift so that the guide rod on the worm gear can move along the thickness direction of the supporting plate 1, thereby realizing the lifting and lowering of the supporting plate 1.

[0051] In the embodiment of the present application, the first signal may be a current signal, a voltage signal or other electrical signals.

[0052] In some of the embodiments of this application, Figure 1 As shown, the first sensing module includes a water level sensor 21, the driving assembly includes a first motor 31, the water level sensor 21 is opposite to a side of the supporting plate 1 for supporting the car, and the first motor 31 is transmission-connected to the supporting plate 1 for driving the supporting plate 1 to rise and fall.

[0053] It can be understood that the water level sensor 21 can sense the water level height below the bearing plate 1. By timely feeding back the information of the water level height to the control module, it is beneficial for the control module to compare it with the current height of the bearing plate 1, so that the control module can determine whether the bearing plate 1 needs to be raised or lowered to reduce the situation of water entering the vehicle.

[0054] In the embodiment of the present application, the water level sensor 21 can be installed on the driving component to keep its position relatively fixed and detect the water level that changes over time.

[0055] In the embodiment of the present application, the control module will continuously monitor the environmental water level through the water level sensor 21 (if there is no water accumulation on the ground, the environmental water level is counted as H w = 0), and control the height H of the bearing plate 1 through the first motor 31 p to always have a difference from the environmental water level height (H w ) that is not less than the safety distance s, that is, H p - H w ≥ s. If the environmental water level rises and 0 < H p - H w < s, the control module will control the bearing plate 1 to rise a certain height (not higher than the maximum height limit) through the first motor 31, so that H p - H w = s; when the water level drops, the control module will control the bearing plate 1 to drop a certain height (not lower than the initial monitoring height) through the first motor 31, so that H p - H w = s.

[0056] In some embodiments of the present application, as Figure 1 shown, the vehicle lifting device includes a second sensing module 4. The second sensing module 4 is electrically connected to the control module and is used to transmit a second signal of the vehicle located on the bearing plate 1 to the control module. The control module judges the ground clearance of the vehicle according to the second signal.

[0057] It can be understood that since the ground clearances of different models of vehicles are often different, in order to avoid the situation that the ground clearance of the vehicle is less than the current water level and the engine进水 occurs after the vehicle is unloaded, the second sensing module 4 is arranged to cooperate with the control module to judge the ground clearance of the vehicle. In this way, it is beneficial for the control module to judge whether the current water level meets the conditions for vehicle unloading.

[0058] In the embodiment of the present application, the second signal can be a current signal, a voltage signal or other electrical signals.

[0059] In some embodiments of the present application, as Figure 1As shown, the second sensing module 4 includes a photoresistor board 41 and a light emitting module 42. The light emitting module 42 and the photoresistor board 41 are respectively located on opposite sides of the carrier board 1. The light emitting module 42 is used to generate a light signal for the photoresistor board 41 so that the current of the photoresistor board 41 changes to generate a second signal.

[0060] It is understandable that the light signal generated by the light emitting module 42 to the photoresistor board 41 when there is no car body blocking it is different from the light signal generated to the photoresistor board 41 when the car body blocks it, which is conducive to the photoresistor board 41 generating currents of different magnitudes, thereby causing the photoresistor board 41 to generate different second signals. When the different second signals are received by the control module, they can be used to determine the ground clearance of the car on the carrier board 1, which is conducive to the control module determining the ground clearance of the car.

[0061] In the embodiment of the present application, when the photoresistor board 41 does not receive the laser signal or the laser signal is blocked, the resistance is the default initial resistance value and the current is the default initial current; when the photoresistor board 41 successfully receives the laser signal, the resistance will decrease, thereby causing the current of the loop to increase. According to this principle, it is only necessary to measure the current of the loop on the photoresistor board 41, and it can be known whether the laser signal is blocked according to the change of the current (the decrease of the current indicates that the laser light path is blocked by an obstacle and cannot be received by the photoresistor board 41; the increase of the current indicates that the obstacle of the laser light path has been cleared and the photoresistor board 41 receives the laser signal again).

[0062] In the embodiments of the present application, Figure 2 As shown, the photoresistor board 41 includes a plurality of photoresistors 411 connected in series, and adjacent photoresistors 411 are connected via an insulating layer 412 .

[0063] In some of the embodiments of this application, Figure 1 As shown, the light-emitting module 42 includes a second motor 421 and a laser generator 422 . The second motor 421 can move along the length direction of the supporting plate 1 . The laser generator 422 is installed on the second motor 421 and can move along the thickness direction of the supporting plate 1 . The laser generator 422 faces the photoresistor board 41 .

[0064] It is understandable that the laser generator 422 moves along the thickness direction of the carrier plate 1 and cooperates with the second motor 421 to move along the length direction of the carrier plate 1 to form a movable plane. The movable plane generates a second signal with a larger current and a second signal with a smaller current at different positions, which is helpful for the control module to judge the ground clearance of the car.

[0065] In the embodiment of the present application, the light-emitting module 42 includes a guide rail and a travel switch. The second motor 421 is installed on the guide rail and can move relative to the guide rail. The travel switch is installed at the end of the guide rail. The control module collects the current I1 at the end of the photoresistor plate 41 at a certain sampling rate and starts the internal timer. The second motor 421 does not receive the enable signal and therefore remains in this position. The control module controls the laser generator 422 to emit a laser signal and descends in height along the thickness direction of the carrier plate 1 at a certain speed until the current of the right photoresistor plate 41 increases. The rising edge of the current is detected by the control module, the timer is reset, and the control module generates a period of PWM pulse signal, thereby driving the second motor 421 to move forward (advance one step), and at the same time records the current value I at this time. m1 At the second step, the control module compares the current I2 collected at this time with the current value I collected at the rising edge of the first step. m1 If the collected current I2 is significantly smaller than I m1 , it is considered that the laser light path is blocked, and the control module controls the laser generator 422 to drop a certain height until the current increases again and a rising edge is generated. The subsequent processing is the same as the first step; if the collected current I2 is approximately equal to I m1 (the error is small enough), it is considered that the laser light path is not blocked in the second step, then the vertical direction laser generator 422 maintains this height, and the internal timer of the horizontal direction control module times out, which will cause the control module to generate a periodic pulse, so that the second motor 421 moves forward one step, and records I m1 For I m2 .

[0066] Therefore, when the second motor 421 moves to the kth step, the collected current I k The I recorded in the previous step m(k-1) Size, if: I mk -I m(k-1) >ΔM, ΔM is the set value. If the current difference is greater than this value, it is considered that the current has changed significantly. The control module controls the laser generator 422 to descend until the current increases again, and records the current I at the rising edge. mk , reset the internal timer and generate a pulse signal of one cycle, driving the second motor 421 forward one step; if: |I k -I m(k-1)|≤Δm, Δm is the set value. Considering the actual factors, such as the change of external temperature, the manufacturing error of the resistance material (material density distribution, cross-sectional size), etc., even if the laser of the same intensity is irradiated on different photoresistors 411, the terminal currents are not completely equal. However, if the difference is within the range of Δm, it can be approximately considered that the currents measured twice are equal. In the vertical direction, the laser generator 422 maintains the height position. In the horizontal direction, due to the timeout of the internal timer, the control module generates a pulse signal of one cycle, drives the second motor 421 to move forward one step, and records I mk For I m(k-1) .

[0067] Until the second motor 421 moves to the end side of the guide rail, the second motor 421 touches the travel switch at the end point, cutting off the working circuit of the second motor 421, and the control module reports the height value of the laser generator 422 at the end point relative to the zero position to the control module.

[0068] This height value is the ground clearance ΔH measured under the current load, which will serve as a reference for whether the unloading process can be safely unloaded. During formal measurement, the ground clearance ΔH under different loads can be obtained by increasing or decreasing the vehicle load.

[0069] When the driver needs to leave the loading board 1, the control module will compare the real-time water level in the environment with the lowest height that the loading board 1 can descend (as the lowest unloading height). If the real-time water level does not exceed the lowest height and does not exceed the ground clearance ΔH, that is, H w ≤H (min) And H w ≤ΔH, the device is considered to be safe to unload, and the CPU continues to send instructions to the first motor 31 to control the carrier plate 1 to descend to the minimum height; if the real-time water level is higher than the minimum height or the ground clearance ΔH, that is, H w >H (min) or H w >H (min) , it is considered that it cannot be safely unloaded (if the load plate 1 drops to the lowest height at this time, the load plate 1 and the components thereon will be damaged, and the car may also be damaged by water).

[0070] In the embodiment of the present application, the minimum height usually reserves a portion of the safety height, so it is higher than the actual ground height. Exemplarily, the minimum height is the actual ground height plus 10 centimeters.

[0071] In the embodiment of the present application, before measuring the ground clearance of the vehicle, the control module enables the second motor 421 to be located at the starting side of the guide rail, the laser generator 422 to be located at a default height, and the travel switch to be turned on.

[0072] In some embodiments of the present application, the car lifting device includes a display module, which is used to display the working status of the driving component and can output a signal to the control module to control the driving component to drive the carrier plate 1 to rise and fall.

[0073] It is understandable that the user can input instructions to the control module through the display module so that the control module can cooperate with the user to load and unload the car.

[0074] In the embodiment of the present application, the control module includes a CPU and a motor control module. The display module can display that the carrier board 1 is locked and provide a screen for the user to enter a password. The user needs to unlock the car before driving it onto the carrier board 1 (i.e., the "loading" process) and complete the password input through the buttons on the human-computer interaction interface. If the verification fails and the number of times exceeds 3, the system will be locked.

[0075] If the calibration is successful, the system is unlocked and the CPU will compare the real-time water level H in the environment. w (If there is no water on the ground, the environmental water level is 0) and the load-bearing plate 1 can be lowered to the minimum height H min (Because some safety height will be reserved, the minimum height will be higher than the actual ground height, and there will also be a wedge-shaped block of corresponding height at the "loading" entrance to facilitate the entry of cars.) If the real-time water level does not exceed the minimum height, that is, H w ≤H min , the device is considered safe to load, and the CPU sends a "lowering action" and "flipping action" request to the motor control module. The first motor 31 lowers the carrier plate 1 to the lowest height. At the same time, the flipping switching motor will slowly complete the "face change" work, flipping the plane where the solar charging panel 5 is located downward and making the other side with higher strength face upward. After the two motors complete the action, the driver starts to drive the car into the carrier plate 1; if the real-time water level is higher than the lowest height, that is, H w >H min， It is considered that it is not safe to load, and the display module reminds you that "the initial loading conditions are not met".

[0076] In some of the embodiments of this application, Figure 1 As shown, the car lifting device includes a solar charging panel 5 and a flip motor. The flip motor is connected to the supporting plate 1 for driving the supporting plate 1 to flip around the first axis. The solar charging panel 5 is connected to one side of the supporting plate 1 by affixing.

[0077] It is understandable that the solar charging panel 5 can be turned toward the sun under the flipping action of the flip motor, which is beneficial for the lifting device to use light energy for charging when there is no car loaded, so as to reduce energy consumption.

[0078] In an embodiment of the present application, the control module includes a CPU and a motor control module. After the car leaves the carrier plate 1, the CPU sends a "lifting action" and "flipping action" request to the motor control module, and the driving component lifts the carrier plate 1 to a certain height. At the same time, the flipping motor will slowly complete the "face-changing" work and flip the plane where the solar charging panel 5 is located upward. After the action is completed, the motor control module will send a feedback signal to the CPU, indicating that the lifting and face-changing actions have been completed. The CPU will retrieve the battery status parameters collected by the energy management module to determine whether the charging conditions are met. If they are met, a charging instruction will be sent to the energy management module to close the charging link, and the solar charging panel 5 will start to charge the battery. During the charging process, the energy management module will continue to monitor the battery status parameters to avoid overcurrent, overvoltage, overtemperature, and overcharging, and cut off the charging link in time after charging is completed.

[0079] In the embodiment of the present application, although the lifting and lowering action of the supporting plate 1 and the flipping action of the supporting plate 1 can be executed synchronously, due to the control of the driving component by the motor control module, when the flipping plane is located in the vertical plane, the height of the supporting plate 1 after lifting and lowering is always higher than the height of the flipping axis to avoid the situation where the flipping plane hits the ground.

[0080] In some of the embodiments of this application, Figure 1 As shown, the control module includes a pressure sensor 6, and the pressure sensor 6 is installed on a side of the supporting plate 1 for supporting the car.

[0081] It can be understood that the pressure sensor 6 helps the control module determine whether there is a car on the supporting plate 1. When the pressure sensor 6 generates an electrical signal due to the pressure of the car, the control module can obtain the pressure applied to the pressure sensor 6 and thus obtain the weight information of the car.

[0082] In the embodiment of the present application, there are four pressure sensors 6 on the carrier plate 1, corresponding to the left front wheel, the right front wheel, the left rear wheel, and the right rear wheel. The pressure values ​​converted by the four pressure sensors 6 are respectively F f1 、F f2 、F r1 and F r2 The ratio of the sum of the pressure values ​​of the pressure sensors 6 of the left front wheel and the right front wheel to the sum of the pressure values ​​of the pressure sensors 6 of the right front wheel and the right rear wheel (F f1+ F f2 ):(F r1+ F r2 )) is between 55:45 and 40:60 (the ideal front and rear axle load distribution is 50:50), the ratio of the pressure value of the left front wheel pressure sensor 6 to the pressure value of the right front wheel pressure sensor 6 or the ratio of the pressure value of the left rear wheel pressure sensor 6 to the pressure value of the right rear wheel pressure sensor 6 (F f1 :Ff2 or F r1 :F r2 ) If it is approximately 50:50, it is considered that the vehicle has been "loaded in place". Otherwise, the display module will feedback that "the vehicle is not loaded in place, please reload".

[0083] The second aspect of the present application provides a lifting method. As Figure 3 shown, the lifting method is applied to the vehicle lifting device of the above technical solution. The lifting method includes:

[0084] 100: Obtain the first signal through the first sensing module;

[0085] 200: Obtain the water level height below the bearing plate 1 according to the first signal through the control module, and obtain the expected height of the bearing plate 1 according to the water level height and the safety height;

[0086] 300: Lift or lower the bearing plate 1 according to the current height and the expected height of the bearing plate 1 through the control module.

[0087] It can be understood that such a setting is beneficial for the bearing plate 1 to remain above the environmental water level and maintain the vehicle lifting device at a position with a lower center of gravity.

[0088] In the embodiment of the present application, the control module will continuously monitor the environmental water level through the water level sensor 21 (if there is no water accumulation on the ground, the environmental water level is counted as H w = 0), and control the height H of the bearing plate 1 through the first motor 31 p to always have a difference from the environmental water level height (H w ) that is not less than the safety distance s, that is, H p - H w ≥ s. If the environmental water level rises and 0 < H p - H w < s, the control module will control the bearing plate 1 to rise a certain height (not higher than the maximum height limit) through the first motor 31 so that H p - H w = s; when the water level drops, the control module will control the bearing plate 1 to drop a certain height (not lower than the initial monitoring height) through the first motor 31 so that H p - H w = s.

[0089] In some embodiments of the present application, as Figure 4 shown, it further includes an unloading process. The unloading process includes:

[0090] 401: Obtain the ground clearance of the vehicle located on the bearing plate 1 through the first sensing module and the control module;

[0091] 402: Compare the ground clearance and the water level through the control module. If the ground clearance is greater than the water level, it is determined that the vehicle can be unloaded from the load plate 1. If the ground clearance is less than the water level, it is determined that the vehicle cannot be unloaded from the load plate 1.

[0092] It can be understood that this is helpful to prevent water from entering the vehicle body due to excessively high water level when the vehicle is unloaded from the load-bearing plate 1 .

[0093] In the embodiment of the present application, the light emitting module 42 includes a guide rail and a travel switch, the second motor 421 is mounted on the guide rail and can move relative to the guide rail along its extension direction, the travel switch is mounted at the end of the guide rail, the light emitting module 42 includes a second motor 421 and a laser generator 422, the second motor 421 can move along the length direction of the carrier plate 1, the laser generator 422 is mounted on the second motor 421 and can move along the thickness direction of the carrier plate 1, and the laser generator 422 faces the photoresistor plate 41. Among them, the ground clearance of the car located on the carrier plate 1 is obtained by the first sensing module and the control module, specifically including:

[0094] The control module controls the second motor 421 to make several steps along the extension direction of the guide rail until the second motor 421 touches the travel switch;

[0095] Before each step, the control module determines whether the photoresistor board 41 generates a rising edge current. If yes, the second motor 421 is controlled to proceed to the next step. Otherwise, the laser generator 422 is controlled to decrease until the photoresistor board 41 generates a rising edge current.

[0096] If the second motor 421 touches the travel switch, the height of the laser generator 422 is acquired through the control module and used as the ground clearance of the car located on the supporting plate 1 .

[0097] In the embodiment of the present application, the height of the laser generator 422 is usually set a little higher than the ground clearance of the car in the first step, so that the laser generator will be blocked at the position of the first step. At this time, the control module can detect the current change and know that it is at the starting end of the guide rail. Subsequently, the laser generator 422 will descend in a step and start the timer at the same time. When it descends to a certain height and the laser re-irradiates the photoresistor plate 41, the rising edge of the current is captured, and the height at this moment is the ground clearance in this step. It should be noted that this is the ground clearance of the vehicle body at the corresponding moment when the laser re-irradiates the photoresistor plate 41 in the first step, not the ground clearance of the whole vehicle, or the ground clearance of a part, so we need to use the subsequent comparison logic to finally find the minimum value of the ground clearance in all steps, and use this minimum value as the final ground clearance of the whole vehicle. Afterwards, the laser generator 422 descends until the laser re-irradiates the resistor plate, and the current at this moment is recorded. At the same time, the rising edge of the current generated is captured by the control module, generating a single-cycle step pulse, controlling the second motor 421 to advance one step, and starting the measurement in the second step. In each subsequent step, the current difference with the previous step will be compared. If the current in the current step is larger than the current recorded in the previous step (when it is greater than a certain value, it can be considered to be blocked rather than an error factor), it is considered that the height of the laser generator is greater than the actual ground clearance in the step. Continue to lower the height in the vertical direction and repeat the operation in the first step. On the contrary, if the difference between the current in the current step and the current in the previous step is less than a certain range (considering error factors such as temperature and material), it is considered that the laser is not blocked in the step, and the height of the laser generator in the step is less than or equal to the actual ground clearance in the step. Therefore, the height is kept unchanged, and a step pulse is generated when the timer times out to push the device forward one step. In this way, if the vehicle body ground clearance in the current step is higher than that in the previous step, the laser will not be blocked, the second motor 421 will not move, the laser generator 422 will maintain the height, and the horizontal direction will advance one step after the timer times out; if the vehicle body ground clearance in the current step is lower than that in the previous step, the laser will be blocked, and the first motor 31 will drop in height until the laser re-irradiates the resistor plate to generate a rising edge of current, and then step one unit. Through continuous comparison, the ground clearance at the end point is the lowest ground clearance in the process of moving from the starting point to the end point, that is, the minimum ground clearance of the whole vehicle.

[0098] In the embodiment of the present application, before each step, the control module determines whether the photoresistor plate 41 generates a rising edge current. If yes, the second motor 421 is controlled to proceed to the next step, otherwise the laser generator 422 is controlled to descend until the photoresistor plate 41 generates a rising edge current. Specifically, the control module collects the current I1 at the end of the photoresistor plate 41 at a certain sampling rate and starts an internal timer; at the first step position, the second motor 421 does not receive an enable signal and therefore remains at this position, the control module controls the laser generator 422 to emit a laser signal, and descends in height along the thickness direction of the carrier plate 1 at a certain speed until the current of the right photoresistor plate 41 increases, the rising edge of the current is detected by the control module, the timer is reset, and the control module generates a period of PWM pulse signal, thereby driving the second motor 421 to move forward (advance one step), and at the same time recording the current value I m1 At the second step, the control module compares the current I2 collected at this time with the current value I collected at the rising edge of the first step. m1 If the collected current I2 is significantly smaller than I m1 , it is considered that the laser light path is blocked, and the control module controls the laser generator 422 to drop a certain height until the current increases again and a rising edge is generated. The subsequent processing is the same as the first step; if the collected current I2 is approximately equal to I m1 (the error is small enough), it is considered that the laser light path is not blocked in the second step, then the vertical direction laser generator 422 maintains this height, and the internal timer of the horizontal direction control module times out, which will cause the control module to generate a periodic pulse, so that the second motor 421 moves forward one step, and records I m1 For I m2 .

[0099] In the embodiment of the present application, when the second motor 421 moves to the kth step, the collected current I k The I recorded in the previous step m(k-1) Size, if:

[0100] I k -I m(k-1) >ΔM, ΔM is a certain set value. If the current difference is greater than this value, it is considered that the current has changed significantly. The control module controls the laser generator 422 to descend until the current increases again. The current I at the rising edge is recorded. mk , reset the internal timer and generate a pulse signal of one cycle, driving the second motor 421 to move forward one step;

[0101] If |I k -I m(k-1)|≤Δm, Δm is a certain set value. Taking into account practical factors, such as external temperature changes, manufacturing errors of resistor materials (material density distribution, cross-sectional size, etc.), even if the laser of the same intensity is irradiated on the photoresistor 411 of the same material, the terminal currents are not completely equal. However, if the difference is within the range of Δm, it can be approximately considered that the currents measured twice are equal. In the vertical direction, the laser generator 422 maintains the height position. In the horizontal direction, due to the timeout of the internal timer, the control module generates a pulse signal of one cycle, drives the second motor 421 to move forward one step, and records I mk For I m(k-1) .

[0102] When the second motor 421 moves to the end point side of the guide rail and touches the travel switch at the end point, the working circuit of the second motor 421 is cut off, so that the control module reports the height value of the laser generator 422 at the end point relative to the zero position to the control module.

[0103] This height value is the ground clearance ΔH measured under the current load, which will serve as a reference for whether the unloading process can be safely unloaded. During formal measurement, the ground clearance ΔH under different loads can be obtained by increasing or decreasing the vehicle load.

[0104] When the driver needs to leave the loading board 1, the control module will compare the real-time water level in the environment with the lowest height that the loading board 1 can descend (as the lowest unloading height). If the real-time water level does not exceed the lowest height and does not exceed the ground clearance ΔH, that is, H w ≤H (min) And H w ≤ΔH, the device is considered to be safe to unload, and the CPU continues to send instructions to the first motor 31 to control the carrier plate 1 to descend to the minimum height; if the real-time water level is higher than the minimum height or the ground clearance ΔH, that is, H w >H (min) or H w >H (min) , it is considered that it cannot be safely unloaded (if the load plate 1 drops to the lowest height at this time, the load plate 1 and the components thereon will be damaged, and the car may also be damaged by water).

[0105] In the embodiment of the present application, in the first step, the laser generator 422 moves to a preset height. This is conducive to the laser generator 422 being higher than the ground clearance of the car. The preset height can be 30 to 50 cm.

[0106] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0107] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0108] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A car lifting device, characterized in that: The vehicle lifting device comprises a bearing plate (1), a first sensing module, a control module and a driving assembly, wherein: The driving assembly is drivingly connected to the carrying plate (1); The first sensing module is mounted on the supporting plate (1) and is used to generate a corresponding first signal according to the height of the water level below the supporting plate (1); The control module is electrically connected to the first sensing module and the driving component respectively, and the control module is used to control the movement of the driving component according to the first signal, so as to drive the carrying plate (1) to rise and fall.

2. The vehicle lifting device according to claim 1, characterized in that: The first sensing module comprises a water level sensor (21), the driving assembly comprises a first motor (31), the water level sensor (21) is opposite to a side of the supporting plate (1) for supporting the automobile, and the first motor (31) is connected to the supporting plate (1) in a transmission manner and is used to drive the supporting plate (1) to rise and fall.

3. The vehicle lifting device according to claim 1, characterized in that: The vehicle lifting device comprises a second sensing module (4), the second sensing module (4) being electrically connected to the control module and used for transmitting a second signal of the vehicle located on the supporting plate (1) to the control module, and the control module determining the ground clearance of the vehicle based on the second signal.

4. The vehicle lifting device according to claim 3, characterized in that: The second sensing module (4) comprises a photoresistor plate (41) and a light emitting module (42), wherein the light emitting module (42) and the photoresistor plate (41) are respectively located on two opposite sides of the carrier plate (1), and the light emitting module (42) is used to generate a light signal for the photoresistor plate (41), so that the current of the photoresistor plate (41) changes to generate the second signal.

5. The vehicle lifting device according to claim 4, characterized in that: The light-emitting module (42) comprises a second motor (421) and a laser generator (422); the second motor (421) is capable of moving along the length direction of the supporting plate (1); the laser generator (422) is mounted on the second motor (421) and is capable of moving along the thickness direction of the supporting plate (1); the laser generator (422) is directed toward the photoresistor plate (41).

6. The vehicle lifting device according to claim 1, characterized in that: The vehicle lifting device comprises a display module, which is used to display the working state of the driving component and can output a signal to the control module to control the driving component to drive the carrying plate (1) to rise and fall.

7. The vehicle lifting device according to claim 1, characterized in that: The car lifting device comprises a solar charging panel (5) and a flip motor, wherein the flip motor is connected to the supporting plate (1) in a transmission manner and is used to drive the supporting plate (1) to flip around a first axis, and the solar charging panel (5) is connected to one side of the supporting plate (1) in a bonded manner.

8. The vehicle lifting device according to claim 1, characterized in that: The control module comprises a pressure sensor (6), and the pressure sensor (6) is mounted on a side of the supporting plate (1) used for supporting the automobile.

9. A lifting method, characterized in that: The lifting method is applied to the car lifting device according to any one of claims 1 to 8, and the lifting method comprises: Acquire a first signal through the first sensing module; Obtaining the water level below the carrying plate (1) according to the first signal through the control module, and obtaining the expected height of the carrying plate (1) according to the water level and the safety height; The control module is used to raise or lower the carrying plate (1) according to the current height and expected height of the carrying plate (1).

10. The lifting method according to claim 9, characterized in that: The uninstallation process also includes: Obtaining the ground clearance of the vehicle located on the carrying plate (1) through the first sensing module and the control module; The control module compares the ground clearance and the water level. If the ground clearance is greater than the water level, it is determined that the vehicle can be unloaded from the load-bearing plate (1). If the ground clearance is less than the water level, it is determined that the vehicle cannot be unloaded from the load-bearing plate (1).

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