Automatic truck scale cleaning device and control method thereof

Abstract

The invention discloses a motor truck scale automatic cleaning device and a control method thereof, and relates to the technical field of automatic cleaning, the motor truck scale automatic cleaning device comprises a motor truck scale, a cleaning assembly, a camera part and a controller, the cleaning assembly comprises a water supply main pipe, the water supply main pipe is provided with a plurality of water supply branch pipes, and the plurality of water supply branch pipes are provided with driving parts; the driving part is used for controlling the nozzles of the water supply branch pipes to clean the truck scale, the camera shooting part is used for shooting a cleaning area of the truck scale, the controller is in signal connection with the driving part and the camera shooting part, and the controller is used for controlling the driving part to operate according to feedback signals of the camera shooting part so as to complete automatic cleaning of the truck scale. According to the invention, automatic cleaning of the truck scale can be realized.

Description

Technical Field

[0001] The invention relates to the technical field of automatic cleaning, and in particular to an automatic cleaning device for a truck scale and a control method thereof. Background Art

[0002] Truck scales are the main weighing equipment used for bulk cargo measurement and are widely used in the company's sales of sulfur concentrate and iron ore powder. Now, with the increasing maturity of high-precision weighing sensor technology, electronic truck scales with high precision, good stability and easy operation have been fully applied. Due to the small particle size and strong fluidity of materials, heavy-duty trucks will spill some materials on the surface of the truck scale during the weighing process. The spilled materials will fall to the bottom of the truck scale through the middle seam of the truck scale during the driving process, especially near the weighing sensor. Since the material is weakly acidic and corrosive, it will cause equipment pollution, corrosion, and damage, and will also cause weighing deviations. The current conventional practice is to clean manually or with a water gun, which is labor-intensive, incomplete, and often accumulates for many days before cleaning, which has a certain impact on the equipment life and measurement accuracy. Summary of the invention

[0003] In view of the problems in the prior art that manual cleaning operations are highly random, labor-intensive, and incomplete, the present invention provides an automatic cleaning device for a truck scale and a control method thereof, which can realize automatic cleaning of a truck scale.

[0004] To achieve the above object, the present invention can be carried out by adopting the following technical solutions:

[0005] In a first aspect, the present invention provides an automatic cleaning device for a truck scale, comprising:

[0006] Truck scales;

[0007] A cleaning component, comprising a water supply main pipe, on which a plurality of water supply branches are arranged, and each of the plurality of water supply branches is provided with a driving member, and the driving member is used for the nozzle of the water supply branch pipe to clean the truck scale;

[0008] A camera, which is used to photograph the cleaning area of ​​the truck scale;

[0009] A controller is respectively connected to the driving component and the camera component by signals, and the controller is used to control the operation of the driving component according to the feedback signal of the camera component to complete the automatic cleaning of the vehicle scale.

[0010] As mentioned above, the automatic cleaning device for the automobile scale, further, the automobile scale includes a scale body and a weighing sensor, the scale body includes a plurality of steel plates, and the plurality of steel plates are spliced ​​by connecting plates to form a load-bearing table surface, and the weighing sensor is arranged below the connecting plates to weigh the vehicle on the table surface.

[0011] As in the above-mentioned automatic cleaning device for automobile scales, further, the table top has a height, and an up ramp and a down ramp are respectively provided on opposite sides of the table top for vehicles to enter and exit the table top, and a drainage ditch is also provided on the side of the table top, and the drainage ditch is connected to the sewage treatment device, and the drainage ditch is used to recover the sewage after cleaning.

[0012] As the above-mentioned automatic cleaning device for automobile scales, further, it also includes a gate, the gate is arranged at the uphill road, the gate includes a main box, a main shaft rotatably arranged on the main box, and a motor arranged in the main box, the output end of the motor is connected to the main shaft, and the main shaft is sleeved with a gate rod;

[0013] When the truck scale is in a cleaning state, the motor drives the main shaft to rotate so that the gate bar is lowered, thereby blocking vehicles from entering the cleaning area of ​​the truck scale;

[0014] When the truck scale is in a non-cleaning state, the motor drives the main shaft to rotate so that the gate lever rises, thereby allowing the vehicle to enter the truck scale for weighing.

[0015] As in the above-mentioned automatic cleaning device for automobile scales, further, a pipeline pressure pump is arranged on the water supply main pipe, and a pressure gauge and a pressure transmitter are respectively arranged on both sides of the pipeline pressure pump, the pressure gauge and the pressure transmitter are both connected to the controller signal, and the pipeline pressure pump is connected to the controller signal.

[0016] As in the above-mentioned automatic cleaning device for automobile scales, further, a plurality of the water supply branch pipes are provided with solenoid valves, the solenoid valves are connected to the controller signals, and the solenoid valves are used to control the clean water of the water supply main pipe to enter the water supply branch pipes.

[0017] As in the above-mentioned automatic cleaning device for automobile scales, further, the driving member includes a first stepper motor and a second stepper motor, a universal conversion crane is provided on the water supply branch pipe, the output shaft of the first stepper motor and the output shaft of the second stepper motor are both connected to the rotating part of the universal conversion crane, and the first stepper motor and the second stepper motor are both connected to the controller signal;

[0018] The first stepper motor and the second stepper motor cooperate with each other to drive the universal conversion crane pipe to rotate, so that the nozzle can clean the truck scale.

[0019] As in the above-mentioned automatic cleaning device for a truck scale, further, the nozzle adopts a duckbill nozzle or a round nozzle.

[0020] In a second aspect, the present invention provides a method for controlling the automatic cleaning of a truck scale, using the above-mentioned automatic cleaning device for a truck scale, which comprises the following specific steps:

[0021] Perform a first acquisition operation: acquire data from a pressure gauge, and determine a current water supply pressure of the water supply main according to the acquired data from the pressure gauge;

[0022] Execute the first judgment operation: determine whether the current water supply pressure is within the preset range. If so, start the pipeline booster pump and sequentially execute the second acquisition operation and the second judgment operation. If not, re-execute the first acquisition operation and the first judgment operation in sequence;

[0023] Perform a second acquisition operation: acquire data from the pressure transmitter, and determine the pressurized water supply pressure of the water supply main according to the acquired data from the pressure transmitter;

[0024] Execute the second judgment operation: determine whether the pressurized water supply pressure is within the preset range, if so, sequentially execute the third acquisition operation and the third judgment operation, if not, restart the pipeline booster pump, and sequentially execute the second acquisition operation and the second judgment operation again;

[0025] Performing a third acquisition operation: acquiring data from a camera and a weighing sensor, and determining a current image and a current weight of the vehicle scale according to the acquired camera data and weighing sensor data;

[0026] Execute the third judgment operation: determine whether the current image and the current weight are consistent. If yes, start the first stepper motor, the second stepper motor and the solenoid valve and execute the fourth judgment operation. If no, keep the first stepper motor, the second stepper motor and the solenoid valve in the closed state, and re-execute the third acquisition operation and the third judgment operation in sequence;

[0027] Execute the fourth judgment operation: determine whether the rotation of the first stepper motor meets the preset rotation angle, if yes, control the second stepper motor to rotate and execute the fifth judgment operation, if no, continue to control the first stepper motor to rotate and execute the fourth judgment operation;

[0028] Execute the fifth judgment operation: determine whether the rotation of the second stepper motor meets the preset rotation angle, if yes, restore the first stepper motor and the second stepper motor to the initial position and execute the sixth judgment operation, if no, continue to control the second stepper motor to rotate and execute the fifth judgment operation;

[0029] Execute the sixth judgment operation: determine whether the first stepper motor and the second stepper motor are restored to the initial position. If so, turn off the first stepper motor, the second stepper motor and the solenoid valve; if not, continue to control the first stepper motor and the second stepper motor to rotate until they are restored to the initial position and execute the sixth judgment operation.

[0030] As in the above-mentioned vehicle scale automatic cleaning control method, further, the determination of whether the current water supply pressure is within the preset range is specifically as follows:

[0031] Compare the current water supply pressure with the preset first water supply pressure. If the difference between the two is between 0.1 and 0.3 MPa, it is within the preset range.

[0032] The specific method of determining whether the pressurized water supply pressure is within the preset range is as follows:

[0033] Compare the pressurized water supply pressure with the preset second water supply pressure. If the difference between the two is between 0.3 and 0.7 MPa, it is within the preset range.

[0034] The specific method of determining whether the current image and the current weight are consistent is as follows:

[0035] Compare the current image with the preset image, and compare the current weight with the preset gravity value. If the images are consistent and the weight ratio between the two is between 0.9 and 1.1, they are consistent and there is no foreign matter on the truck scale.

[0036] The specific method of judging whether the rotation of the first stepper motor meets the preset rotation angle is as follows:

[0037] The first stepper motor works in 9° steps until the rotation reaches the preset 270°;

[0038] The specific method of judging whether the rotation of the second stepper motor meets the preset rotation angle is as follows:

[0039] The second stepper motor works in steps of 3° until the rotation reaches the preset 36°;

[0040] The specific method of determining whether the first stepper motor and the second stepper motor have returned to their initial positions is as follows:

[0041] The current positions of the first stepper motor and the second stepper motor are compared with the positions of the first stepper motor and the second stepper motor before starting. If the positions are consistent, it is considered that the first stepper motor and the second stepper motor have returned to their initial positions.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. The present invention can achieve the effect of automatic full coverage cleaning of the truck scale, with high cleaning efficiency and thorough cleaning;

[0044] 2. The present invention achieves high cleaning pressure and wide coverage by pressurizing water supply and setting different types of nozzles, thus achieving the purpose of high-efficiency and low-consumption cleaning;

[0045] 3. The present invention can monitor whether there are foreign objects intruding into the cleaning area of ​​the truck scale through the camera. If a person or object is found to have intruded, the device can be interrupted in time and continue to work after the intrusion is eliminated, thereby improving the safety of the device;

[0046] 4. The universal conversion crane of the present invention can work according to the preset program under the drive of the stepping motor to achieve cleaning without dead angles;

[0047] 5. The nozzle of the present invention adopts a quick disassembly setting, and nozzles of different specifications can be replaced according to the cleanliness conditions of the truck scale in different seasons, thereby achieving the purpose of water saving and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments are 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.

[0049] Figure 1 This is a schematic structural diagram of an automatic cleaning device according to an embodiment of the present invention;

[0050] Figure 2 This is a schematic diagram of the automatic cleaning control method according to an embodiment of the present invention;

[0051] Among them, 1. Water supply main pipe; 2. Water supply branch pipe; 3. Camera; 4. Controller; 5. Steel plate; 6. Connecting plate; 7. Weighing sensor; 8. Up ramp; 9. Down ramp; 10. Gate; 11. Pipeline booster pump; 12. Pressure gauge; 13. Pressure transmitter; 14. Solenoid valve; 15. First stepper motor; 16. Second stepper motor; 17. Universal conversion crane pipe; 18. Duckbill nozzle; 19. Round nozzle. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0053] Example:

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of the embodiments of the present invention are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0055] 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", "axial", "radial", "circumferential" 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, and do not indicate or imply 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.

[0056] In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly defined. In addition, unless otherwise clearly defined and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] In a first aspect, the present invention provides an automatic cleaning device for a truck scale, which includes a truck scale, a cleaning component, a camera 3 and a controller 4. The cleaning component includes a water supply main 1, on which a plurality of water supply branches 2 are arranged. Each of the plurality of water supply branches 2 is provided with a driving component, and the driving component is used to control the nozzles of the water supply branches 2 to clean the truck scale. The camera 3 is used to photograph the cleaning area of ​​the truck scale. The controller 4 is respectively connected to the driving component and the camera 3 by signal, and the controller 4 is used to control the operation of the driving component according to the feedback signal of the camera 3 to complete the automatic cleaning of the truck scale.

[0059] Specifically, see Figure 1 The water supply main 1 is laid along the length direction of the truck scale. A plurality of water supply branches 2 are evenly distributed on the water supply main 1. Each water supply branch 2 is equipped with a nozzle that can adjust the direction and a driving part that can drive the nozzle to rotate or swing, so as to ensure that the cleaning water can cover every corner of the truck scale. The camera 3 is installed above the truck scale and has high-definition imaging capability. It can take real-time photos of the cleaning area of ​​the truck scale and monitor whether there are foreign objects intruding into the cleaning area of ​​the truck scale. The controller 4 is a core control unit, which is connected to the driving part and the camera 3 by wired or wireless signals. The controller 4 is preset with a cleaning algorithm, which can intelligently analyze and control the action of the driving part according to the image information fed back by the camera 3, adjust the water spraying intensity, direction and time of the nozzle, and at the same time, if a person or object is found to have intruded, it can be interrupted in time, and continue to work after elimination, so as to achieve accurate automatic cleaning. In addition, the driving part may include but is not limited to a motor, a hydraulic device, etc., the camera 3 may include but is not limited to an infrared camera, a high-definition camera, etc., and the controller 4 may include but is not limited to a PLC (programmable logic controller), a PAC (programmable automation controller), etc.

[0060] As an optional implementation, in some embodiments, the vehicle scale includes a scale body and a weighing sensor 7, the scale body includes a plurality of steel plates 3, the plurality of steel plates 3 are spliced ​​by connecting plates 4 to form a load-bearing table, and the weighing sensor 7 is arranged below the connecting plates 4 to weigh the vehicle on the table. Furthermore, the table has a height, and an up ramp 8 and a down ramp 9 are respectively arranged on opposite sides of the table for vehicles to enter and exit the table, and a drainage ditch (not shown in the figure) is also arranged on the side of the table, the drainage ditch is connected to a sewage treatment device (not shown in the figure), and the drainage ditch is used to recycle the sewage after cleaning. Furthermore, it also includes a barrier gate 10, which is arranged at the upper ramp 8. The barrier gate includes a main box, a main shaft rotatably arranged on the main box, and an electric motor arranged in the main box. The output end of the motor is connected to the main shaft, and the main shaft is sleeved with a gate rod; when the truck scale is in a cleaning state, the motor drives the main shaft to rotate so that the gate rod is lowered, thereby blocking the vehicle from entering the cleaning area of ​​the truck scale; when the truck scale is in a non-cleaning state, the motor drives the main shaft to rotate so that the gate rod is raised, thereby allowing the vehicle to enter the truck scale for weighing.

[0061] Specifically, the scale body of the automobile scale has a table with strong overall rigidity, which is specifically composed of multiple steel plates 3 and connecting plates 4. A weighing sensor 7 is arranged under the connecting plate, so that the weight of the vehicle on the table can be accurately measured. In addition, the table is designed to have a certain height, that is, higher than the ground, which can improve the stability of the weighing process to a certain extent, and at the same time facilitate the drainage of the sewage generated after cleaning into the drainage ditch for recycling. The gate 10 controls the lifting and lowering of the gate rod through the motor in its main box, which can prevent other vehicles from entering the cleaning area during the cleaning process of the automobile scale, thereby improving the safety of the device.

[0062] As an optional implementation, in some embodiments, a pipeline booster pump 11 is provided on the water supply main 1, and a pressure gauge 12 and a pressure transmitter 13 are provided on both sides of the pipeline booster pump 11, respectively. The pressure gauge 12 and the pressure transmitter 13 are both connected to the controller 4 by signal, and the pipeline booster pump 11 is connected to the controller 4 by signal. The pressure gauge 12 and the pressure transmitter 13 can feedback the pressure information of the clean water in the water supply main 1, and start the pipeline booster pump 11 to pressurize the clean water according to the actual situation, so as to ensure that the sprayed clean water has sufficient pressure, thereby achieving the effect of water saving and high cleaning efficiency.

[0063] As an optional implementation, in some embodiments, a plurality of water supply branches 2 are provided with a solenoid valve 14, which is connected to the controller 4 by signal, and is used to control the clean water of the water supply main 1 to enter the water supply branch 14. The solenoid valve 14 has a fast response and can quickly control the opening and closing of the valve. At the same time, the controller 4 can achieve the effect of automatic control.

[0064] As an optional implementation, in some embodiments, the driving member includes a first stepper motor 15 and a second stepper motor 16, a universal conversion crane 17 is arranged on the water supply branch pipe 2, the output shaft of the first stepper motor 15 and the output shaft of the second stepper motor 16 are both connected to the rotating part of the universal conversion crane 17, and the first stepper motor 15 and the second stepper motor 16 are both connected to the controller 4 signal; the first stepper motor 115 and the second stepper motor 16 cooperate with each other to drive the universal conversion crane 17 to rotate, so as to realize the cleaning of the truck scale by the nozzle. Among them, the automatic cleaning device uses the cooperation of the dual stepper motor and the universal conversion crane 17 to rotate the nozzle. The dual stepper motor has a high torque output and good load resistance, and can remain stable in the face of external interference or load changes. This stability cooperates with the universal conversion crane 17 and will not deviate from the predetermined position due to vibration or external force during the rotation process. At the same time, the dual stepper motor can realize bidirectional rotation, and the rotation angle can be precisely controlled. This flexibility cooperates with the universal conversion crane 17 to easily rotate so that the cleaning water can be sprayed to every corner of the truck scale.

[0065] As an optional implementation, in some embodiments, the nozzle adopts a duckbill nozzle 18 or a circular nozzle 19. Among them, both nozzles have the effect of water saving and high efficiency. In addition, the duckbill nozzle 18 has a wider spraying range and can effectively cover a large area of ​​cleaning area. The circular nozzle 19 sprays more evenly and can achieve 360-degree all-round spraying. In actual use, it can be adjusted according to needs to meet the requirements of cleaning the truck scale.

[0066] In a second aspect, the present invention provides a method for controlling the automatic cleaning of a truck scale, using the above-mentioned automatic cleaning device for a truck scale, which comprises the following specific steps:

[0067] Step 110: Execute a first acquisition operation: acquire data from a pressure gauge, and determine the current water supply pressure of the water supply main according to the acquired data from the pressure gauge.

[0068] In this step, the pressure gauge is an instrument that uses atmospheric pressure as a reference and is used to measure pressure greater than, equal to, or less than atmospheric pressure. The data of the pressure gauge can be obtained by directly observing the scale indicated by the pointer on the pressure gauge and recording it, or by using a test instrument to read the scale indicated by the pointer. The scale indicated by the pointer reflects the current water supply pressure, thereby determining the current water supply pressure in the water supply main.

[0069] Step 120: Execute the first judgment operation: determine whether the current water supply pressure is within the preset range. If so, start the pipeline booster pump and execute the second acquisition operation and the second judgment operation in sequence. If not, re-execute the first acquisition operation and the first judgment operation in sequence.

[0070] In this step, the relationship between the current water supply pressure and the preset pressure is determined. This determination operation can obtain two results. One is that if it is within the preset range, the pipeline booster pump is started and step 130 and step 140 are executed in sequence. The other is that if it is not within the preset range, step 110 and step 120 are executed again in sequence.

[0071] Step 130: Execute a second acquisition operation: acquire data from the pressure transmitter, and determine the pressurized water supply pressure of the water supply main according to the acquired pressure transmitter data.

[0072] In this step, the pressure transmitter is an instrument that receives pressure variables and converts the pressure change into a standard output signal at a certain ratio after sensing and conversion. The data of the pressure transmitter can be transmitted to the controller for reading by wired or wireless transmission. The read value reflects the size of the pressurized water supply pressure, thereby determining the pressurized water supply pressure in the water supply main.

[0073] Step 140: Execute the second judgment operation: determine whether the pressurized water supply pressure is within the preset range. If so, execute the third acquisition operation and the third judgment operation in sequence. If not, restart the pipeline booster pump and re-execute the second acquisition operation and the second judgment operation in sequence.

[0074] In this step, the relationship between the pressurized water supply pressure and the preset pressure is determined. The determination operation can obtain two results. One is that if it is within the preset range, step 150 and step 160 are executed in sequence. The other is that if it is not within the preset range, the pipeline booster pump is restarted and steps 130 and 140 are executed.

[0075] Step 150: Execute the third acquisition operation: acquire the data of the camera and the weighing sensor, and determine the current image and current weight of the vehicle scale according to the acquired camera data and weighing sensor data.

[0076] In this step, the camera element generally refers to the camera module and its related components, which work together to capture and convert light into digital images. The data of the camera element can be transmitted to the controller for reading by wired or wireless transmission. The read image reflects the image information on the current truck scale, thereby determining the current image of the truck scale. The weighing sensor is a device that converts a mass signal into a measurable electrical signal output. The data of the weighing sensor can be obtained by directly reading it by transmitting it to the controller or using a special software tool to read the data, such as FUTEK USB Solutions, HBM eDrive Testing, etc. The read data reflects the weight information on the current truck scale, thereby determining the current weight of the truck scale.

[0077] Step 160: Execute the third judgment operation: determine whether the current image and the current weight are consistent. If so, start the first stepper motor, the second stepper motor and the solenoid valve and execute the fourth judgment operation. If not, keep the first stepper motor, the second stepper motor and the solenoid valve in the closed state, and re-execute the third acquisition operation and the third judgment operation in sequence.

[0078] In this step, it is determined whether the current image is consistent with the preset image, and the relationship between the current weight and the preset gravity value is determined. This judgment operation can obtain two results. One is that if the image and the weight are consistent, step 170 is executed. The other is that if the image or the weight is inconsistent, the first stepper motor, the second stepper motor and the solenoid valve are kept in the closed state, and steps 150 and 160 are executed again in sequence.

[0079] Step 170: Execute the fourth judgment operation: determine whether the rotation of the first stepper motor meets the preset rotation angle. If so, control the second stepper motor to rotate and execute the fifth judgment operation. If not, continue to control the first stepper motor to rotate and execute the fourth judgment operation.

[0080] In this step, the vehicle scale is in a cleaning state, and the rotation angle of the first stepper motor is measured. For example, an encoder measurement method or a micro-stepping measurement method can be used. The measured angle is compared with a preset angle to determine whether the rotation of the first stepper motor meets the requirement. The judgment operation can obtain two results. One is that if the rotation angle of the first stepper motor meets the preset rotation angle, step 180 is executed. The other is that if the rotation angle of the first stepper motor does not meet the preset rotation angle, the first stepper motor is continued to be controlled to rotate and step 170 is executed.

[0081] Step 180: Execute the fifth judgment operation: determine whether the rotation of the second stepper motor meets the preset rotation angle. If so, restore the first stepper motor and the second stepper motor to the initial position and execute the sixth judgment operation. If not, continue to control the rotation of the second stepper motor and execute the fifth judgment operation.

[0082] In this step, the rotation angle of the second stepper motor is measured in the same manner as the rotation angle of the first stepper motor, which will not be described in detail. The measured angle is compared with the preset angle to determine whether the rotation of the second stepper motor meets the requirement. The judgment operation can obtain two results. One is that if the rotation angle of the second stepper motor meets the preset rotation angle, step 190 is executed. The other is that if the rotation angle of the second stepper motor does not meet the preset rotation angle, the second stepper motor is continued to be controlled to rotate and step 180 is executed.

[0083] Step 190: Execute the sixth judgment operation: determine whether the first stepper motor and the second stepper motor are restored to the initial position. If so, turn off the first stepper motor, the second stepper motor and the solenoid valve; if not, continue to control the first stepper motor and the second stepper motor to rotate until they are restored to the initial position and execute the sixth judgment operation.

[0084] In this step, the vehicle scale is in a cleaning state, and the positions of the first stepper motor and the second stepper motor are measured. The specific measurement method can adopt the above-mentioned method, and the measured position is compared with the initial position to determine whether the first stepper motor and the second stepper motor are restored to the initial position. This judgment operation can obtain two results. One is that if the first stepper motor and the second stepper motor are restored to the initial position, the first stepper motor, the second stepper motor and the solenoid valve are turned off. The other is that if the first stepper motor and the second stepper motor are not restored to the initial position, the first stepper motor and the second stepper motor are continued to be controlled to rotate until the initial position is restored and step 190 is executed.

[0085] As an optional implementation, in some embodiments, determining whether the current water supply pressure is within the preset range is specifically as follows: comparing the current water supply pressure with the preset first water supply pressure; if the difference between the two is between 0.1 and 0.3 MPa, it is within the preset range.

[0086] The specific method of judging whether the pressurized water supply pressure is within the preset range is as follows: comparing the pressurized water supply pressure with the preset second water supply pressure. If the difference between the two is between 0.3 and 0.7 MPa, it is within the preset range.

[0087] The specific method for judging whether the current image and the current weight are consistent is: comparing the current image with the preset image, and comparing the current weight with the preset gravity value. If the images are consistent, and the weight ratio of the two is between 0.9 and 1.1, they are consistent and there is no foreign matter on the vehicle scale.

[0088] The specific method of judging whether the rotation of the first stepper motor meets the preset rotation angle is as follows: the first stepper motor performs stepping operation at 9° until the rotation reaches a preset 270°.

[0089] The specific method of judging whether the rotation of the second stepper motor meets the preset rotation angle is as follows: the second stepper motor performs stepping operation at 3° until the rotation reaches the preset 36°.

[0090] The specific method of judging whether the first stepper motor and the second stepper motor have returned to their initial positions is as follows: comparing the current positions of the first stepper motor and the second stepper motor with the positions of the first stepper motor and the second stepper motor before starting; if the positions are consistent, it is considered that the first stepper motor and the second stepper motor have returned to their initial positions.

[0091] Specifically, the above-mentioned preset range, preset angle, image and weight consistency can be appropriately adjusted according to actual conditions to meet the requirements of safe automatic cleaning of the truck scale.

[0092] 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 representations of the above terms do not necessarily refer 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 and the features of the different embodiments or examples, unless they are contradictory.

[0093] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable ordinary technicians in the field to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made based on the essence of the content of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic cleaning device for a truck scale, characterized in that: include: Truck scales; A cleaning component, comprising a water supply main pipe, on which a plurality of water supply branches are arranged, and each of the plurality of water supply branches is provided with a driving member, and the driving member is used to control the nozzles of the water supply branches to clean the truck scale; A camera, which is used to photograph the cleaning area of ​​the truck scale; A controller is respectively connected to the driving component and the camera component by signals, and the controller is used to control the operation of the driving component according to the feedback signal of the camera component to complete the automatic cleaning of the vehicle scale.

2. The automatic cleaning device for a truck scale according to claim 1, characterized in that: The vehicle scale includes a scale body and a weighing sensor. The scale body includes a plurality of steel plates. The plurality of steel plates are spliced ​​together by connecting plates to form a load-bearing table. The weighing sensor is arranged below the connecting plates to weigh the vehicle on the table.

3. The automatic cleaning device for a truck scale according to claim 2 is characterized in that: The table top has a height, and an up ramp and a down ramp are respectively arranged on opposite sides of the table top for vehicles to enter and exit the table top. A drainage ditch is also arranged on the side of the table top, and the drainage ditch is connected to the sewage treatment device, and the drainage ditch is used to recycle the sewage after cleaning.

4. The automatic cleaning device for a truck scale according to claim 3 is characterized in that: It also includes a barrier gate, which is arranged at the up ramp, and includes a main box, a main shaft rotatably arranged on the main box, and a motor arranged in the main box, the output end of the motor is connected to the main shaft, and the main shaft is sleeved with a barrier rod; When the truck scale is in a cleaning state, the motor drives the main shaft to rotate so that the gate bar is lowered, thereby blocking vehicles from entering the cleaning area of ​​the truck scale; When the truck scale is in a non-cleaning state, the motor drives the main shaft to rotate so that the gate lever rises, thereby allowing the vehicle to enter the truck scale for weighing.

5. The automatic cleaning device for a truck scale according to claim 1, characterized in that: A pipeline booster pump is arranged on the water supply main pipe, and a pressure gauge and a pressure transmitter are arranged on both sides of the pipeline booster pump respectively. The pressure gauge and the pressure transmitter are both connected to the controller signal, and the pipeline booster pump is connected to the controller signal.

6. The automatic cleaning device for a truck scale according to claim 1, characterized in that: A solenoid valve is provided on each of the plurality of water supply branch pipes. The solenoid valve is connected to the controller signal and is used to control the clean water of the water supply main pipe to enter the water supply branch pipe.

7. The automatic cleaning device for a truck scale according to claim 1, characterized in that: The driving member includes a first stepper motor and a second stepper motor, a universal conversion crane is provided on the water supply branch pipe, the output shaft of the first stepper motor and the output shaft of the second stepper motor are both connected to the rotating part of the universal conversion crane, and the first stepper motor and the second stepper motor are both connected to the controller signal; The first stepper motor and the second stepper motor cooperate with each other to drive the universal conversion crane pipe to rotate, so that the nozzle can clean the truck scale.

8. The automatic cleaning device for a truck scale according to claim 1, characterized in that: The nozzle is a duckbill nozzle or a round nozzle.

9. A method for controlling automatic cleaning of a truck scale, using the automatic cleaning device of a truck scale according to any one of claims 1 to 8, characterized in that: The specific steps include: Perform a first acquisition operation: acquire data from a pressure gauge, and determine a current water supply pressure of the water supply main according to the acquired data from the pressure gauge; Execute the first judgment operation: determine whether the current water supply pressure is within the preset range. If so, start the pipeline booster pump and sequentially execute the second acquisition operation and the second judgment operation. If not, re-execute the first acquisition operation and the first judgment operation in sequence; Perform a second acquisition operation: acquire data from the pressure transmitter, and determine the pressurized water supply pressure of the water supply main according to the acquired data from the pressure transmitter; Execute the second judgment operation: determine whether the pressurized water supply pressure is within the preset range, if so, sequentially execute the third acquisition operation and the third judgment operation, if not, restart the pipeline booster pump, and sequentially execute the second acquisition operation and the second judgment operation again; Perform a third acquisition operation: acquire data from the camera and the weighing sensor, and determine the current image and current weight of the vehicle scale according to the acquired camera data and the weighing sensor data; Execute the third judgment operation: determine whether the current image and the current weight are consistent. If yes, start the first stepper motor, the second stepper motor and the solenoid valve and execute the fourth judgment operation. If no, keep the first stepper motor, the second stepper motor and the solenoid valve in the closed state, and re-execute the third acquisition operation and the third judgment operation in sequence; Execute the fourth judgment operation: determine whether the rotation of the first stepper motor meets the preset rotation angle, if yes, control the second stepper motor to rotate and execute the fifth judgment operation, if no, continue to control the first stepper motor to rotate and execute the fourth judgment operation; Execute the fifth judgment operation: determine whether the rotation of the second stepper motor meets the preset rotation angle, if yes, restore the first stepper motor and the second stepper motor to the initial position and execute the sixth judgment operation, if no, continue to control the second stepper motor to rotate and execute the fifth judgment operation; Execute the sixth judgment operation: determine whether the first stepper motor and the second stepper motor are restored to the initial position. If so, turn off the first stepper motor, the second stepper motor and the solenoid valve; if not, continue to control the first stepper motor and the second stepper motor to rotate until they are restored to the initial position and execute the sixth judgment operation.

10. The automatic cleaning control method for a truck scale according to claim 9, characterized in that: The specific method of determining whether the current water supply pressure is within the preset range is as follows: Compare the current water supply pressure with the preset first water supply pressure. If the difference between the two is between 0.1 and 0.3 MPa, it is within the preset range. The specific method of determining whether the pressurized water supply pressure is within the preset range is as follows: Compare the pressurized water supply pressure with the preset second water supply pressure. If the difference between the two is between 0.3 and 0.7 MPa, it is within the preset range. The specific method of determining whether the current image and the current weight are consistent is as follows: Compare the current image with the preset image, and compare the current weight with the preset gravity value. If the images are consistent and the weight ratio between the two is between 0.9 and 1.1, they are consistent and there is no foreign matter on the truck scale. The specific method of judging whether the rotation of the first stepper motor meets the preset rotation angle is as follows: The first stepper motor works in 9° steps until the rotation reaches the preset 270°; The specific method of judging whether the rotation of the second stepper motor meets the preset rotation angle is as follows: The second stepper motor works in steps of 3° until the rotation reaches the preset 36°; The specific method of determining whether the first stepper motor and the second stepper motor have returned to their initial positions is as follows: The current positions of the first stepper motor and the second stepper motor are compared with the positions of the first stepper motor and the second stepper motor before starting. If the positions are consistent, it is considered that the first stepper motor and the second stepper motor have returned to their initial positions.

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