Vehicle weight detection method and device

Abstract

According to the vehicle weight detection method and device provided by the invention, all the wheels of the vehicle pass through the bearing plate, the sensor of the bearing plate collects the weight value data, the data curve is drawn according to the process weight of the wheels passing through the weighing plate, the peak value is extracted from the data curve, and the overall weight of the vehicle is obtained. And the sum of the two weight values is calculated, and the weight value of the current vehicle is obtained, so that subsequent overload detection is facilitated, the mechanical stereo garage has an overload detection function, the overloaded vehicle can be prevented from being parked in the mechanical stereo garage, and the safety of the mechanical stereo garage is improved. And comparing the weight sum value with a preset rated weight value to judge whether the vehicle is overloaded or not so as to judge whether the vehicle which is about to enter the mechanical stereo garage is overloaded or not, so that the mechanical stereo garage has an overload detection function, the overloaded vehicle can be prevented from being parked in the mechanical stereo garage, and the safety of the mechanical stereo garage is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle weight detection, and in particular to a vehicle weight detection method and device. Background Art

[0002] A mechanical stereo garage is a parking facility that uses mechanical equipment to achieve multi-layer parking of vehicles. It makes full use of vertical space and greatly increases the parking capacity per unit area. At the same time, the mechanical stereo garage uses an automated control system to achieve rapid storage and retrieval of vehicles, improving parking efficiency. At present, mechanical stereo garages have become a common way to park vehicles. The weight limit on vehicles entering the mechanical garage system is an important guarantee for the stable and safe operation of the mechanical garage.

[0003] As the number of vehicle types (sedans, SUVs, off-road vehicles, etc.) increases, the types of vehicles parked in mechanical multi-story parking garages will also increase. However, the weight of some vehicles exceeds that of conventional vehicles. The items placed in the vehicle plus the weight of the vehicle itself cause the parking equipment to be overloaded, resulting in unstable equipment operation and, in severe cases, damage to the parking equipment.

[0004] Currently, most mechanical multi-story garages on the market lack vehicle weight detection functions, posing major operational risks. Summary of the invention

[0005] The technical problem to be solved by this application is that most mechanical stereo garages on the market currently lack vehicle weight detection function, which poses a major operational risk.

[0006] In order to solve the above problems, in order to solve the above technical problems or at least partially solve the above technical problems, the present application provides a vehicle weight detection method and device.

[0007] In a first aspect, the present invention discloses a vehicle weight detection method, which specifically comprises the following steps:

[0008] Preset the vehicle's rated weight value;

[0009] The wheels on all axles of the vehicle pass through the load-bearing plate in the order of the axles, collect the weight value of the wheels on each axle when passing through the weighing plate, record the weight value data of all axles in the process and draw the corresponding curve;

[0010] For the data curve of the weight value data on the wheel axle, the peak value in the weight value data is extracted and recorded as the weight value of each wheel axle in the order in which the wheel axle passes;

[0011] The weight values ​​of all wheel axles are calculated and summed up to obtain the vehicle weight value.

[0012] Preferably, the steps include:

[0013] Compare the detected vehicle weight value with the preset vehicle rated weight value to determine whether it is overloaded, and control the garage drive according to the determination result;

[0014] When the vehicle is judged to be overloaded, the garage's power system will be stopped and a voice alarm will be issued;

[0015] When it is determined that the vehicle is not overloaded, the power system of the garage is started.

[0016] Preferably, the wheels on all axles of the vehicle pass through the load-bearing plate in the order of the axles, the weight value of the wheels on each axle when passing through the weighing plate is collected, all the wheel axle weight value data in the process are recorded and the corresponding curve is drawn, which specifically includes the following steps:

[0017] The load-bearing plate is horizontally set on the path of the vehicle. The weight value of the load-bearing plate is collected from the wheels on all axles from the time they touch the load-bearing plate to the time they leave the load-bearing plate. The weight value of the load-bearing plate itself is removed from the collected data to obtain the weight value data of all wheel axles passing through.

[0018] The obtained weight value data of all wheel axles are processed to draw data curves to obtain the weight value data curves of each wheel axle.

[0019] Preferably, the collecting of the weight value of the load-bearing plate during the whole process specifically comprises the following steps:

[0020] A weight collection sensor is installed on the load-bearing plate;

[0021] The sensors obtain the weight values ​​at the corresponding installation positions respectively, and the weight values ​​collected by all sensors are added together to obtain the weight value of the wheel axle currently passing through the load-bearing plate.

[0022] In a second aspect, the present invention discloses a vehicle weight detection device, which includes at least four weighing sensors, a load-bearing plate, a control module, and a signal integrator;

[0023] The weighing sensor is connected to the load-bearing plate, and the weighing sensor is evenly installed on the bottom of the load-bearing plate;

[0024] The control module is connected to the signal integration component, the signal integration component is electrically connected to the weighing sensor, the signal integration component is installed on or around the load-bearing plate, and the control module is electrically connected to the garage control system.

[0025] Preferably, the control module includes a processing unit, a signal transmission unit, and a storage unit;

[0026] The processing unit is connected to the signal transmission unit and the storage unit respectively. The storage unit stores the weight value data collected by the weighing sensor. The signal transmission unit is connected to the signal integration component.

[0027] Preferably, the length of the load-bearing plate is greater than the maximum wheel width of vehicles allowed to enter the garage, and the width is greater than the maximum wheel pressure surface of vehicles allowed to enter the garage.

[0028] Preferably, the weighing sensor comprises a first weighing sensor, a second weighing sensor, a third weighing sensor, and a fourth weighing sensor;

[0029] The first weighing sensor, the second weighing sensor, the third weighing sensor and the fourth weighing sensor are respectively arranged at four corners of the load-bearing plate, and the weighing sensors are installed at the bottom of the load-bearing plate.

[0030] Preferably, the load-bearing plate comprises a first part and a second part;

[0031] The first part and the second part are installed on a path for a vehicle to enter a garage, and the first part and the second part are respectively arranged on the left and right sides of the vehicle.

[0032] Preferably, the weighing sensor comprises a first weighing sensor, a second weighing sensor, a third weighing sensor, a fourth weighing sensor, a fifth weighing sensor, a sixth weighing sensor, a seventh weighing sensor, and an eighth weighing sensor;

[0033] The first weighing sensor, the second weighing sensor, the third weighing sensor, and the fourth weighing sensor are respectively arranged at four corners of the first part;

[0034] The fifth load cell, the sixth load cell, the seventh load cell and the eighth load cell are respectively arranged at four corners of the second part.

[0035] The above technical solution provided by this application has the following advantages compared with the prior art:

[0036] The present application provides a vehicle weight detection method and device, wherein the method comprises the following steps: all wheels of the vehicle pass through a load-bearing plate respectively, and a sensor of the load-bearing plate collects weight value data; a data curve is drawn of the weight of the wheel passing through the weighing plate; a peak value is extracted from the data curve to obtain the overall weight of the vehicle; the sum of the two weight values ​​is calculated; and by obtaining the current vehicle weight value, subsequent overload detection is facilitated, so that a mechanical stereo garage has an overload detection function, which can prevent overloaded vehicles from being parked in the mechanical stereo garage, thereby improving the safety of the mechanical stereo garage.

[0037] Furthermore, the weight and value are compared with the preset rated weight value to determine whether it is overloaded, thereby determining whether the vehicle about to enter the mechanical stereo garage is overloaded, so that the mechanical stereo garage has an overload detection function, which can prevent overloaded vehicles from being parked in the mechanical stereo garage and improve the safety of the mechanical stereo garage.

[0038] For the detection device, the wheels of the vehicle pass through the load-bearing plate, and the weighing sensor is underneath. The weight value of each wheel axle is collected separately, and then the weight peak value of each wheel axle is calculated as the sum. There is no need to carry the wheels on each wheel axle at the same time to detect the weight, which reduces the equipment cost and layout construction cost.

[0039] The detection device is an independent device, which is directly set at the entrance of the original mechanical stereo garage. It does not need to be installed on the original mechanical stereo garage, which improves convenience.

[0040] The load-bearing plate is set separately, and a wheel is supported on the single load-bearing plate, which can be used to measure when the two wheels on each wheel axle of the vehicle are not in a horizontal state, thereby solving the problem that the wheels on the same wheel axle of the vehicle are in front and behind and affect the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0043] Figure 1 A schematic diagram of the steps of a vehicle weight detection method provided in this application Figure 1 ;

[0044] Figure 2 A schematic diagram of the steps of a vehicle weight detection method provided in this application Figure 2 ;

[0045] Figure 3 A flow chart of a vehicle weight detection method provided in this application;

[0046] Figure 4 A structural diagram of a vehicle weight detection device provided in this application Figure 1 ;

[0047] Figure 5 A structural diagram of a vehicle weight detection device provided in this application Figure 2 ;

[0048] Figure 6 A structural diagram of a vehicle weight detection device provided in this application Figure 3 ;

[0049] Figure 7 A schematic diagram of the installation of a vehicle weight detection device provided in this application Figure 1 ;

[0050] Figure 8 A schematic diagram of the installation of a vehicle weight detection device provided in this application Figure 2 ;

[0051] Fig. 9 A structural diagram of a vehicle weight detection device provided in this application Figure 4 ;

[0052] Fig.10 A structural diagram of a vehicle weight detection device provided in this application Figure 5 ;

[0053] Fig.11 A schematic diagram of the installation of a vehicle weight detection device provided in this application Figure 3 ;

[0054] Fig.12 A schematic diagram of the installation of a vehicle weight detection device provided in this application Figure 4 .

[0055] Description of reference numerals:

[0056] 1. Vehicle weight detection device; 2. Garage control system;

[0057] 11. Weighing sensor;

[0058] 111, first weighing sensor; 112, second weighing sensor; 113, third weighing sensor; 114, fourth weighing sensor; 115, fifth weighing sensor; 116, sixth weighing sensor; 117, seventh weighing sensor; 118, eighth weighing sensor;

[0059] 12. load-bearing plate; 121. first part; 122. second part;

[0060] 13. Control module; 131. Processing unit; 132. Signal transmission unit; 133. Storage unit;

[0061] 14. Signal integrator. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0063] First, see Figure 1-3 The present invention discloses a vehicle weight detection method, which specifically comprises the following steps:

[0064] Step S1: The wheels on all axles of the vehicle pass through the load-bearing plate in the order of the axles, and the weight value of the wheels on each axle when passing through the weighing plate is collected, and the weight value data of all axles in the process are recorded and the corresponding curve is drawn;

[0065] Step S2: extracting peak values ​​from the weight value data curve on the wheel axles, and recording them as weight values ​​of the respective wheel axles in the order in which the wheel axles pass;

[0066] Step S3: Calculate the sum of the weight values ​​of all wheel axles to obtain the vehicle weight value.

[0067] Step S4: preset the rated weight value of the vehicle;

[0068] Step S5: Compare the detected vehicle weight value with the preset vehicle rated weight value to determine whether it is overloaded, and control the garage drive according to the determination result; when it is determined that the vehicle is overloaded, stop driving the garage power system and issue a voice alarm; when it is determined that the vehicle is not overloaded, start the garage power system.

[0069] Specifically, in step S1, before the vehicle enters the garage, all wheels pass through the load-bearing plate in turn, and the weight of the wheels when passing through the load-bearing plate is collected. The weight values ​​are obtained by classifying the wheel axles, and the weight data collected during the process are recorded, and the weight value data curves of all wheel axles are drawn to facilitate subsequent data extraction. The design of the load-bearing plate requires the use of a high-precision pressure sensor to ensure the accuracy of the collected weight value data. As an embodiment, the weight value data curve of the corresponding wheel can be obtained by using an edge detection method to detect the starting and ending positions of the curve, corresponding to the two nodes where the wheel presses on the load-bearing plate and leaves the load-bearing plate, thereby obtaining the corresponding weight value data curve of the wheel axle.

[0070] Specifically, in step S2, the peak value of the drawn data curve is extracted as the weight value of all wheel axles. When extracting the peak value, a digital filtering algorithm (such as low-pass filtering, high-pass filtering or band-pass filtering) can be used to pre-process the original data curve to remove noise interference, make the curve smoother, and facilitate accurate identification of the peak value. In the peak extraction process, a reasonable peak determination threshold is set. This threshold can be determined based on the accuracy of the sensor, the weight fluctuation range of the vehicle during normal driving, and the statistical results of historical data. When the value of a data point exceeds the threshold and is the maximum value among its adjacent data points, it is determined to be a peak value.

[0071] Specifically, in step S3, the weight values ​​of all wheel axles are summed up and the sum is compared with the preset rated weight value. When compared with the preset vehicle rated weight value, a reasonable error tolerance value is set in consideration of the measurement error and the error range allowed by the system. When the difference between the current vehicle weight sum and the preset rated weight value is within the error tolerance value range, it is determined to be not overloaded; when it exceeds this range, it is determined to be overloaded.

[0072] Specifically, in step S4, a weight value is preset according to the actual situation of the mechanical stereo garage, and compared with the subsequent detection results.

[0073] Specifically, in step S5, the detection result is used to determine whether to drive the garage. When it is determined to be overloaded, the garage can be stopped from starting, and a voice alarm is issued to notify the owner of the overload, allowing the owner to drive away. At the same time, the upper system is notified to record the relevant information of the overloaded vehicle. When the vehicle is detected and determined to be not overloaded, the garage power system is started to allow the vehicle to enter the garage for parking.

[0074] It can be understood that all wheels of the vehicle pass through the load-bearing plate respectively, and the sensor of the load-bearing plate collects weight value data, and the weight of the wheel passing through the weighing plate is plotted as a data curve, and the peak value is extracted from the data curve to obtain the weight of all wheel axles of the vehicle, and the sum of the weight values ​​of the two is calculated. The weight sum is compared with the preset rated weight value to determine whether it is overloaded, thereby determining whether the vehicle about to enter the mechanical multi-story parking garage is overloaded, so that the mechanical multi-story parking garage has an overload detection function, which can prevent overloaded vehicles from being parked in the mechanical multi-story parking garage and improve the safety of the mechanical multi-story parking garage.

[0075] When conducting overload inspection on a vehicle, it is necessary to keep the vehicle running on level ground for a while. Before and after passing the load-bearing plate, ensure that the vehicle is running level to avoid potholes and bumps.

[0076] By performing a weight check on the vehicle and then comparing the detected weight result with the preset weight value to determine whether the vehicle is overloaded, the vehicle entering the mechanical multi-story garage can avoid exceeding the weight value that the mechanical multi-story garage can bear.

[0077] Since there are certain speed limits in front of mechanical stereo garages, it is generally required to drive at a low speed, such as 5-10 kilometers per hour. Before the overload detection, when the vehicle passes the load-bearing plate, it is necessary to ensure that the load-bearing plate is installed on a horizontal plane, and ensure that there is only one object on the horizontal plane, to avoid pits or protrusions on the vehicle's driving surface, and reduce the abnormality caused by pits or protrusions on the surface during vehicle weight detection. As an embodiment, when passing through the load-bearing plate, the vehicle may be required to maintain a uniform speed to ensure the accuracy of the detection value, but it is not required to maintain a uniform speed at all times when passing.

[0078] As an embodiment, in step S3, a database is established according to the vehicle type (such as a small car, a medium-sized passenger car, a large truck, etc.), and the legal maximum rated weight value range of various types of vehicles is recorded in detail in the database. This database needs to be updated regularly according to relevant national traffic laws and industry standards to ensure the accuracy of the data. By establishing a database corresponding to the vehicle type, it is possible to accurately preset reasonable rated weight values ​​for different types of vehicles and improve the accuracy of detection. For special vehicles (such as modified vehicles, engineering vehicles, etc.), in addition to referring to statutory standards, it is also necessary to preset their rated weight values ​​in combination with the design modification parameters of the vehicle or the requirements of the engineering operation, and data docking with the vehicle manufacturer or the relevant operating unit can be carried out to obtain accurate information. It can be understood that considering the special circumstances of special vehicles can avoid misjudgments caused by unified standards, making the detection scheme more flexible and applicable.

[0079] Among them, the current number of axles of the vehicle is 2, 3, 4 or more than 4, and the weight of all axles needs to be collected and calculated in total to obtain the overall weight of the vehicle. That is, the vehicle is not limited to having two sets of wheels, but can also have 3, 4 or more sets. Therefore, the weight value of the vehicle needs to be obtained by the weight values ​​of all axles on the vehicle, and the actual number of axles set on the vehicle needs to be considered during the detection process. In this embodiment, a vehicle with two axles (such as Figure 3 ), but the vehicle is not limited to 2 wheel axles in this embodiment.

[0080] Step S1 specifically includes the following steps:

[0081] Step S11: The load-bearing plate is horizontally arranged on the path of the vehicle, and the weight value of the load-bearing plate in the whole process from the wheels on all axles contacting the load-bearing plate to leaving the load-bearing plate is collected, and the weight value of the load-bearing plate itself is removed from the collected data to obtain the weight value data of all wheel axles passing through;

[0082] Step S12: Processing the obtained weight value data of all wheel axles to draw a data curve to obtain a weight value data curve of each wheel axle.

[0083] Specifically, all wheels of the vehicle pass through the weighing plate, on which sensors are installed to collect weight change information throughout the entire process. The weight change information is recorded and saved, and bound to the vehicle. The acquired information is used to draw a data curve, which is classified according to the wheel axle where the wheel is located, and the weight value data curves of all wheel axles passing through are stored separately.

[0084] As an embodiment, a mechanical multi-story garage inspects the vehicle to determine whether the vehicle has completely entered the garage, so that all the axles of the vehicle are weight-checked. At the same time, the weight of subsequent vehicles is avoided from being calculated into the previous vehicle to ensure the correctness of the test. Camera image recognition can be used to determine whether the front and rear positions of the vehicle have passed the weight check position, or infrared sensor detection can be used to detect whether the vehicle as a whole has passed the weight check position.

[0085] Step S11 specifically includes the following steps:

[0086] A weight collection sensor is installed on the load-bearing plate;

[0087] The sensors obtain the weight values ​​at the corresponding installation positions respectively, and the weight values ​​collected by all sensors are added together to obtain the weight value of the wheel axle currently passing through the load-bearing plate.

[0088] Specifically, there may be multiple sensors on the load-bearing plate, and they are evenly distributed on the load-bearing plate. It is necessary to integrate the weight value data collected by all sensors, add up the weight values, and get the corresponding wheel axle weight value, that is, the weight of the corresponding part of each wheel axle of the vehicle. For example, the vehicle has two wheel axles. After the two wheel axles pass in turn, the two weight values ​​obtained correspond to the weight values ​​of the front and rear parts corresponding to the two wheel axles.

[0089] Second, see Figure 4-12 The present invention discloses a vehicle weight detection device 1, which is installed on a horizontal and flat surface, and ensures that the surface within 5-10 meters near the device is level, that is, the surfaces before and after the vehicle passes through the device are level, avoiding convexities or depressions; in addition, the installation position can be a horizontal plane or an inclined slope, but it is necessary to ensure that the surface on which the vehicle travels is flat.

[0090] The device includes at least four weighing sensors 11, a load-bearing plate 12, a control module 13, and a signal integrator 14. The weighing sensor 11 is used to measure the weight value on the load-bearing plate 12. The wheels of the vehicle pass through the load-bearing plate 12. The signal integrator 14 is used to integrate the signal transmitted by the weighing sensor 11 and then transmit it to the control module 13. The control module 13 performs signal processing and logical operation on the signal.

[0091] Specifically, the weighing sensor 11 is connected to the load-bearing plate 12, the weighing sensor 11 is evenly installed at the bottom of the load-bearing plate 12, the control module 13 is connected to the signal integrator 14, the signal integrator 14 is electrically connected to the weighing sensor 11, the signal integrator 14 is installed on the load-bearing plate 12 or around the load-bearing plate 12, and the control module 13 is electrically connected to the garage control system 2. The signal integrator 12 is connected to the load-bearing plate 12 by a wired connection method or a wireless signal wireless connection method. Similarly, the signal integrator 12 can also be connected to the control module 13 by a wired connection method or a wireless signal wireless connection method.

[0092] It can be understood that the wheels of the vehicle pass through the load-bearing plate 12, and the weighing sensor 11 is underneath. The weight value of each wheel axle is collected separately, and then the weight peak of each wheel axle is calculated as the sum. There is no need to carry the front and rear wheels at the same time to detect the weight, and the equipment cost and layout construction cost are reduced. Ensure that the vehicles entering the garage are within the rated load of the system, effectively detect vehicles that exceed the rated load, output warning signals, disconnect the power of the drive facilities, and ensure the safe operation of the equipment.

[0093] Optionally, the vehicle weight detection device 1 can be installed inside or outside the entrance of the garage. When installing the device, it is necessary to ensure that the ground before and after the vehicle passes is level to avoid bumps or pits, so as to prevent large errors in the detection results due to uneven ground.

[0094] In addition, the detection device is an independent device, which is directly set at the entrance of the original mechanical multi-story garage. It does not need to be installed on the original mechanical multi-story garage, which improves convenience. For some old mechanical multi-story garages, they are not equipped with overload detection equipment. Installing the detection device at the entrance of the mechanical multi-story garage can solve the problem that some mechanical multi-story garages do not have their own detection function.

[0095] In particular, the length of the load-bearing plate 12 is greater than the maximum wheel width of the vehicle allowed to enter the garage, and the width is greater than the maximum wheel pressure surface of the vehicle allowed to enter the garage. It can be understood that the length setting of the load-bearing plate 12 requires that the two wheels on each wheel axle of the vehicle are at the top at the same time, and the width setting is greater than the maximum wheel pressure surface of the vehicle, so that the vehicle can roll on the surface of the load-bearing plate 12. In other words, the installation position of the load-bearing plate 12 must be accurately aligned with the vehicle's driving route to ensure that the wheels on all wheel axles of the vehicle can accurately press on the load-bearing plate 12.

[0096] The control module 13 includes a processing unit 131 , a signal transmission unit 132 , and a storage unit 133 . The processing unit 131 is connected to the signal transmission unit 132 and the storage unit 133 , respectively. The storage unit 133 stores the weight value data collected by the weighing sensor 11 . The signal transmission unit 132 is connected to the signal integrator 14 .

[0097] Specifically, the signal transmission unit 132 includes a signal receiving unit and a signal output unit. The signal receiving unit is used to receive the signal of the signal integrator 14, and the signal output unit is used to transmit the control signal to the garage control system 2. The signal transmission unit 132 transmits the signal output by the signal integrator 14 to the processing unit 131, and transmits the control signal of the processing unit 131 to the garage control system 2. The storage unit 133 is used for the weight value data collected by the weighing sensor 11. The processing unit 131 performs logical operations on the signal and performs data processing on the weight value data.

[0098] Optionally, the signal output unit includes a signal output interface, and the signal output interface adopts a data output interface form including but not limited to PNP transistor output, NPN transistor output, or any one or more combinations of TCP, RS485, etc.

[0099] Optionally, the weigh plate is a metal frame.

[0100] As an embodiment, a vehicle may be provided with 2 or more wheel axles, and the number of wheel axles provided on the vehicle is unknown before the weight detection, and it is necessary to detect whether the vehicle has passed the vehicle weight detection as a whole. Therefore, the weight detection device also includes a vehicle detection device, which can be installed on a mechanical stereo garage or on a mechanism near the weight detection device, and is used to detect whether the vehicle as a whole has completely passed the load-bearing plate. Since 2, 3, 4 or more wheel axles can be provided on the vehicle, it is impossible to accurately determine whether the vehicle has completed the weight detection normally by simply judging whether the vehicle has completely passed through the wheel axles. The vehicle detection device can determine whether the vehicle has completely passed through the weight detection. Optionally, the vehicle detection device can use camera image recognition, infrared sensor detection and other methods for detection, starting from the position where the vehicle enters the vehicle weight detection and stopping the detection when leaving the detection position, to obtain the weight on all axles of the vehicle, thereby obtaining the weight data of the vehicle.

[0101] As an embodiment, the weighing sensor 11 includes a first weighing sensor 111, a second weighing sensor 112, a third weighing sensor 113, and a fourth weighing sensor 114; wherein the first weighing sensor 111, the second weighing sensor 112, the third weighing sensor 113, and the fourth weighing sensor 114 are respectively arranged at the four corners of the load-bearing plate 12, and the weighing sensor 11 is installed at the bottom of the load-bearing plate 12.

[0102] It can be understood that one weighing plate is provided with four weighing sensors 11, and the weighing sensors 11 are evenly installed at the four corners of the load-bearing plate 12. The measuring range of the weighing sensor 11 is matched and selected according to the overload weight to be detected, and the structural form of the weighing sensor 11 is not limited.

[0103] In some embodiments, the vehicle is tested under the following conditions: the ground is flat, the vehicle speed is within 20 km / h, the vehicle is driven slowly, the vehicle uses a four-wheeled sedan, the weight is 1493 kg, the driver and the co-driver weigh 74 kg, the vehicle and the driver weigh a total of 1567 kg, and the total weight of the vehicle, the driver, and the co-driver is 1641 kg. Compared with the actual test data, according to the national standard requirements, the accuracy error should be within 10% to be qualified, and the test results are shown in Table 1.

[0104] Table 1

[0105] Front wheel weight / kg Rear wheel weight / kg Total weight of front and rear wheels / kg Standard value Accuracy 938 608 1546 1567 -1.34％ 932 633 1565 1567 -0.13％ 935 613 1548 1567 -1.21％ 951 623 1574 1567 0.45％ 957 678 1635 1641 -0.37％ 963 686 1649 1641 0.49％ 963 674 1637 1641 -0.24％ 970 675 1645 1641 0.24％ 971 648 1619 1641 -1.34％ 972 653 1625 1641 -0.98％

[0106] In some embodiments, the load-bearing plate 12 includes a first portion 121 and a second portion 122; the first portion 121 and the second portion 122 are installed on a path for a vehicle to enter a garage, and the first portion 121 and the second portion 122 are respectively arranged on the left and right sides of the vehicle.

[0107] Specifically, the load-bearing plate 12 is divided into two parts, and a single load-bearing plate 12 bears a wheel, which can facilitate the measurement when the two wheels on each wheel axle of the vehicle are not in a horizontal state, and solve the problem that the vehicle wheels affect the test results in a forward and backward manner. In addition, the split setting can solve the problem of the front and back when the wheel enters the test range. This problem may be caused by the vehicle turning, resulting in the wheel failing to adjust to be parallel to the vehicle body, that is, the vehicle's wheels fail to return to the correct position and cannot be parallel to the direction of entering the garage, resulting in the wheel driving to the weighing plate in a forward and backward state, avoiding the problem that the wheels cannot be in the load-bearing plate 12 at the same time, resulting in a larger error in the test results. Although the mechanical three-dimensional garage requires the vehicle to enter along the direction of the garage, the vehicle will adjust the wheel direction by turning the steering wheel when entering. At this time, it is easy to cause the vehicle to deviate from the direction of entering the garage, causing the wheels on the same axle of the vehicle to appear in a forward and backward state. The split setting can perform weight detection on the wheels on the same axle separately, avoiding the problem that the wheels affect the accuracy of the test results in a forward and backward state.

[0108] Optionally, the load-bearing plate 12 can also be divided into 2, 3 or more than 3 parts, and each part of the load-bearing plate 12 can be connected to the signal integrator 14 through a wired connection method or a wireless signal connection method, so that the number of parts of the load-bearing plate 12 corresponds to the number of wheels to be detected. Since the number of wheels set on a single axle of a vehicle is unknown, the number of wheels set on each axle of the vehicle to be detected needs to be considered when setting the load-bearing plate. Therefore, the number of load-bearing plates 12 can correspond to the actual number of wheels to be detected. In this embodiment, the load-bearing plates 12 are divided into 2, but the number of weighing plates 12 is not limited to the number set in this embodiment.

[0109] The weighing sensor 11 includes a first weighing sensor 111 ′, a second weighing sensor 112 ′, a third weighing sensor 113 ′, a fourth weighing sensor 114 ′, a fifth weighing sensor 115 , a sixth weighing sensor 116 , a seventh weighing sensor 117 , and an eighth weighing sensor 118 .

[0110] The first weighing sensor 111', the second weighing sensor 112', the third weighing sensor 113', and the fourth weighing sensor 114' are respectively arranged at the four corners of the first part 121; the fifth weighing sensor 115, the sixth weighing sensor 116, the seventh weighing sensor 117, and the eighth weighing sensor 118 are respectively arranged at the four corners of the second part 122.

[0111] It can be understood that each weighing plate is provided with four weighing sensors 11, which can independently collect weight values ​​of the first part 121 and the second part 122. The first part 121 and the second part 122 are simultaneously connected to the signal integrator 14, and the collected signal with weight value data is transmitted to the control module 13 through the signal integrator 14, and then the weight values ​​collected by the first part 121 and the second part 122 are processed.

[0112] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0113] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0114] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0115] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0116] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0117] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0118] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0119] The above is a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A vehicle weight detection method, characterized in that: The specific steps include: The wheels on all axles of the vehicle pass through the load-bearing plate in the order of the axles, collect the weight value of the wheels on each axle when passing through the weighing plate, record the weight value data of all axles in the process and draw the corresponding curve; For the data curve of the weight value data on the wheel axle, the peak value in the weight value data is extracted and recorded as the weight value of each wheel axle in the order in which the wheel axle passes; The weight values ​​of all wheel axles are calculated and summed up to obtain the vehicle weight value.

2. The vehicle weight detection method according to claim 1, characterized in that: The following steps are involved: Preset the vehicle's rated weight value; The detected vehicle weight value is compared with the preset vehicle rated weight value to determine whether it is overloaded, and the garage drive is controlled according to the judgment result; when it is determined that the vehicle is overloaded, the garage power system is stopped and a voice alarm is issued; when it is determined that the vehicle is not overloaded, the garage power system is started.

3. The vehicle weight detection method according to claim 1, characterized in that: The wheels on all axles of the vehicle pass through the load-bearing plate in the order of the axles, collect the weight value of the wheels on each axle when passing through the weighing plate, record all the wheel axle weight value data in the process and draw the corresponding curve, specifically including the following steps: The load-bearing plate is horizontally set on the path of the vehicle. The weight value of the load-bearing plate is collected from the wheels on all axles from the time they touch the load-bearing plate to the time they leave the load-bearing plate. The weight value of the load-bearing plate itself is removed from the collected data to obtain the weight value data of all wheel axles passing through. The obtained weight value data of all wheel axles are processed to draw data curves to obtain the weight value data curves of each wheel axle.

4. The vehicle weight detection method according to claim 1, characterized in that: The collection of the weight value of the bearing plate during the whole process specifically includes the following steps: A weight collection sensor is installed on the load-bearing plate; The sensors obtain the weight values ​​at the corresponding installation positions respectively, and the weight values ​​collected by all sensors are added together to obtain the weight value of the wheel axle currently passing through the load-bearing plate.

5. A vehicle weight detection device, characterized in that: It includes at least four load cells, a load-bearing plate, a control module, and a signal integrator; The weighing sensor is connected to the load-bearing plate, and the weighing sensor is evenly installed on the bottom of the load-bearing plate; The control module is connected to the signal integration component, the signal integration component is electrically connected to the weighing sensor, the signal integration component is installed on or around the load-bearing plate, and the control module is electrically connected to the garage control system.

6. The vehicle weight detection device according to claim 5, characterized in that: The control module includes a processing unit, a signal transmission unit, and a storage unit; The processing unit is connected to the signal transmission unit and the storage unit respectively. The storage unit stores the weight value data collected by the weighing sensor. The signal transmission unit is connected to the signal integration component.

7. The vehicle weight detection device according to claim 5, characterized in that: The length of the load-bearing plate is greater than the maximum wheel width of the vehicle allowed to enter the garage, and the width is greater than the maximum wheel pressure surface of the vehicle allowed to enter the garage.

8. The vehicle weight detection device according to claim 5, characterized in that: The weighing sensor comprises a first weighing sensor, a second weighing sensor, a third weighing sensor, and a fourth weighing sensor; The first weighing sensor, the second weighing sensor, the third weighing sensor and the fourth weighing sensor are respectively arranged at four corners of the load-bearing plate, and the weighing sensors are installed at the bottom of the load-bearing plate.

9. The vehicle weight detection device according to claim 5, characterized in that: The load-bearing plate includes a first part and a second part; The first part and the second part are installed on a path for a vehicle to enter a garage, and the first part and the second part are respectively arranged on the left and right sides of the vehicle.

10. The vehicle weight detection device according to claim 9, characterized in that: The weighing sensor comprises a first weighing sensor, a second weighing sensor, a third weighing sensor, a fourth weighing sensor, a fifth weighing sensor, a sixth weighing sensor, a seventh weighing sensor, and an eighth weighing sensor; The first weighing sensor, the second weighing sensor, the third weighing sensor, and the fourth weighing sensor are respectively arranged at four corners of the first part; The fifth load cell, the sixth load cell, the seventh load cell and the eighth load cell are respectively arranged at four corners of the second part.

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