A smart car wash system and car wash method

Abstract

The application discloses an intelligent car washing machine system and a car washing method, a car washing site, a first sensing component and a second sensing component which are installed at an entrance position of a first end of the car washing site, the horizontal distance between the detection areas of the first sensing component and the second sensing component is greater than the distance of one person, an indicating nozzle is installed at a second end of the car washing site opposite to the first end, the indicating nozzle sprays water column upward at least, when a vehicle enters the car washing site, a driver parks the vehicle according to the indication, a pre-washing device is installed at at least one end of the car washing site, and a cleaning device is installed at the car washing site and comprises at least one cleaning component which is movably arranged to clean the vehicle in all directions. The configuration is optimized, the car washing process is smooth, the detergent absorption time is greatly increased, the cost is reduced, the reliability is higher, the safety hidden danger is less, water resources are saved, and the practical use effect is very satisfactory.

Description

Technical Field

[0001] This invention relates to the field of intelligent car washing, specifically to an intelligent car wash machine system and a car washing method. Background Technology

[0002] CN105984439A discloses a "Contactless Car Wash Machine with Air Drying Function," whose frame system includes a vehicle front positioning sensor and a vehicle front overshoot alarm device located at the frame outlet to ensure that cars are parked in designated positions. In practical use, due to the lack of intuitive reference points, drivers find it difficult to accurately judge the distance between the car's front and the limit, easily triggering an overshoot alarm due to the car's front protruding too far forward. This necessitates repeated reversing and repositioning maneuvers following the car wash machine's voice prompts. Because car wash spaces are limited and the parking space is small, customers unfamiliar with the area often struggle, wasting considerable time on parking, severely reducing car wash efficiency and becoming a significant bottleneck to improving car wash capabilities, resulting in a poor customer experience. Therefore, using sensors to detect the vehicle front in car wash equipment does not meet ergonomic requirements, has poor practicality, and needs improvement.

[0003] CN202310847709.4 provides a "Unattended Automatic Car Wash Device," which includes: a payment recognition component installed at the entrance and exit of the car wash lane. The payment recognition component identifies the license plate and vehicle model information of the vehicle to be washed, collects the car wash fee, and controls the opening and closing of the car wash lane entrance and exit. The payment recognition component includes an entrance barrier, an exit barrier, and a license plate recognition camera for collecting the license plate information of the vehicle to be washed. Users scan a payment QR code using a mobile device to access the payment page, confirm the vehicle model information, pay the fee, and then the entrance barrier opens, allowing the user to drive their vehicle into the car wash lane. This solution requires additional equipment beyond the washing unit, occupies the lane at the car wash entrance, and is time-consuming; therefore, it needs improvement.

[0004] In reality, to isolate the water mist and function as an entrance / exit barrier, existing contactless car wash solutions all use electric roller shutters instead of parking barriers. These are more expensive, and customers feel oppressed in the confined environment of the car wash, breathing in water mist mixed with wastewater and detergent, which is unhygienic. Furthermore, since the cost cannot be determined before the end of the car wash service, similar to the controlled exit design in the aforementioned patent, free entry and exit are not allowed before settlement to prevent customers from evading payment. Therefore, in various unexpected situations, customers cannot open the roller shutter, making it difficult for personnel to evade quickly, thus posing a significant safety hazard.

[0005] Therefore, the vehicle front alarm sensor, the entrance and exit gate, and the electric roller shutter door mentioned in the aforementioned patent are all unavoidable solutions, which result in a poor customer experience, affect efficiency, and pose obvious safety hazards, and urgently need to be improved.

[0006] Furthermore, contactless car washes use high-pressure water jets to remove dirt, and their cleaning effectiveness heavily relies on the dissolving power of the car wash solution. Sufficient absorption and reaction time are required to remove heavy dirt. This conflicts with the efficiency and volume goals of unattended self-service car washes. As a result, the widespread adoption of contactless car washes faces significant challenges, necessitating efforts to improve the absorption and dissolving properties of the car wash solution while controlling the duration of each wash.

[0007] Therefore, it is very important to obtain an intelligent car wash system and car wash method that can overcome the above-mentioned defects. Summary of the Invention

[0008] To address at least one of the aforementioned technical problems, this invention provides an intelligent car wash system and a car wash method.

[0009] This invention discloses an intelligent car wash system, comprising:

[0010] A car wash area is provided, which includes an entrance, a parking instruction area, and a car wash area located between the entrance and the parking instruction area. The entrance and the parking instruction area are located at opposite ends along the length of the car wash area.

[0011] A first sensing component and a second sensing component are installed at intervals along the length of the car wash area at the entrance of the first end of the car wash area. The horizontal distance between the detection areas of the first sensing component and the second sensing component is greater than the distance of a person.

[0012] A parking indicator structure includes an indicator nozzle installed in the parking indicator area; wherein the indicator nozzle is installed at the second end of the car wash area opposite to the first end, and the indicator nozzle sprays water jets upward at least. When a vehicle enters the car wash area, if the front of the vehicle hits the sprayed water jet, the driver stops according to the indicator.

[0013] A cleaning device is installed at the car wash site and includes at least one movable cleaning component, such as an existing air-drying contactless car wash machine, to clean the vehicle from all angles.

[0014] The controller, the first sensing component, the second sensing component, the indicator nozzle, and the cleaning device are respectively connected to and controlled by the controller;

[0015] When the vehicle reaches the entrance, the first and second sensing components transmit the sensed signals to the controller. The controller then controls the indicator nozzle to spray a water jet upwards based on the sensed signals. The height of the water jet is higher than the height of the front of the vehicle. The vehicle continues to drive to the car wash area. The driver observes from inside the vehicle whether the water jet is close to the front of the vehicle or whether the water jet disappears, in order to determine whether the vehicle has reached the parking position.

[0016] The number of indicator nozzles is set to two, which are arranged at an angle opposite each other to form an arched water jet. These nozzles are located on opposite sides of the rear of the parking indicator area, with the height of the arched water jet exceeding the height of the vehicle's hood. Full-spectrum lighting is installed around each indicator nozzle. At the extreme hood position at the inner end of the car wash area, a single indicator nozzle or a group of indicator nozzles spraying a surface-distributed water jet is installed on the ground.

[0017] A front wheel stop is installed on the ground at the second end of the car wash area; an air curtain is installed above the exit and / or entrance of the car wash area; an ultrasonic ranging sensor is installed on the cleaning component of the cleaning device to measure vehicle body data and determine whether there are vehicles below.

[0018] It also includes a pre-wash device, which is connected to and controlled by the controller. The pre-wash device includes pre-wash liquid nozzles, which are installed on opposite sides of the width direction of the car wash area.

[0019] The first sensing component is a microwave radar sensing switch, which is installed above the entrance position and detects oncoming vehicles at an angle to the front; the second sensing component is a through-beam photoelectric switch, which is installed below the first sensing component.

[0020] The intelligent car wash system includes a controller for connecting and controlling a first sensing component, a second sensing component, an indicator nozzle, a pre-wash device, and a cleaning device. It also includes a wastewater reuse system, comprising: a sedimentation tank connected to the bottom of the car wash area, a greywater tank, a water pump connecting the sedimentation tank and the greywater tank, a filter screen installed inside the greywater tank, and an ozone generator introduced into the bottom of the greywater tank. The greywater tank is connected to an overflow outlet and a water outlet at its top and bottom, respectively. The overflow outlet discharges wastewater into the municipal sewer network, and the water outlet is connected to the cleaning nozzle of the cleaning device via a high-pressure cleaning pump.

[0021] Through the above technical solution, since there are no gates or other barriers at the entrances and exits in this system, customers can enter and exit quickly and without obstacles, resulting in higher operational efficiency, ensuring smooth evacuation of people and vehicles, recycling of wastewater, reducing costs, and conforming to green principles.

[0022] A car washing method includes the following steps:

[0023] When the car to be washed arrives at the car wash area (S1), it drives straight in, i.e., the vehicle is controlled to drive to the entrance position. At this time, the first and second sensing components transmit sensing information to the controller, which then makes a judgment. If it is determined that both the first and second sensing components are in the triggered state, the controller controls the pre-wash device and the indicator nozzle to open based on the judgment state. If it is determined that the triggered state has changed, i.e., the first sensing component is in the triggered state but the second sensing component is not in the triggered state, the controller controls the pre-wash device and the indicator nozzle to close based on the judgment state.

[0024] Step S1 also includes:

[0025] As a vehicle enters the entrance, the first sensor is triggered first. Due to the vehicle's length, the first sensor remains triggered. Then, the second sensor is triggered, and the controller determines that a vehicle has entered. This initial criterion is met, and the controller activates the pre-wash nozzles and indicator sprayers of the pre-wash device. In other words, the first sensor is triggered first, and then, while the first sensor remains triggered, the second sensor is subsequently triggered. Thus, the controller determines that a car has entered, immediately activates the pre-wash pump, and sprays pre-wash solution onto the lower part and rear of the vehicle through the pre-wash nozzles. Simultaneously, the indicator sprayers at the front of the car wash area spray water jets to indicate the front limit of the vehicle and guide it into the designated parking space.

[0026] S2. Determining whether the front of the vehicle has reached the parking instruction area while it is in motion;

[0027] The driver inside the vehicle determines whether the vehicle has stopped at the automatic car wash position based on whether the vehicle's wheels are against the front wheel block, whether the front of the vehicle is blocking the water jet from the indicator nozzle, or whether the front of the vehicle is close to the water jet from the indicator nozzle.

[0028] Step S2 also includes:

[0029] When the vehicle reaches the required position for car washing, it enters a parked state. The second sensor moves away from the vehicle to deactivate its trigger state. Based on the information that the second sensor is in a deactivated state, the controller delays and shuts off the pre-wash spray nozzles and indicator nozzles of the pre-wash device. That is, when the second sensor deactivates its trigger state, the spraying of pre-wash spray stops after a short delay. Simultaneously, the car moves forward, with the front wheels approaching the front wheel wells and the front of the car not pressing against the water jet from the indicator nozzle, thus entering a parked state. If the vehicle's advanced detection criteria are not met when the pre-wash spray stops, it is considered a false trigger, and the vehicle is treated as not in use.

[0030] S3, Car Wash Control;

[0031] The vehicle driver can request a car wash by scanning a QR code with a mobile device or by using a car wash app on their mobile device. The system checks whether there are any outstanding fees for previous orders. If the fees are paid, the controller will activate the cleaning device to perform the cleaning based on the payment confirmation. The air curtain will be activated simultaneously while spraying high-pressure water. If the fees are not paid, the system will prompt for payment in the car wash program or app, and the cleaning device will not operate.

[0032] Car wash liquid is sprayed onto the entire vehicle, and the high-pressure water jet from the cleaning device removes dirt from the vehicle's surface. During the high-pressure water wash, an air curtain is simultaneously activated to prevent water mist from overflowing and affecting the external environment.

[0033] The driver judges whether the vehicle is parked properly by whether the wheels are against the front wheel block and whether the front of the vehicle is blocking the water jet from the indicator nozzle. The driver can request a car wash by scanning a code with a mobile terminal, or through a mini-program or app. The system checks whether there are any outstanding fees for historical orders. After payment, the system controls the cleaning device to clean the vehicle and simultaneously opens the air curtain while spraying high-pressure water.

[0034] After washing the car, drive away.

[0035] Settle the bill before the next car wash.

[0036] The determination method for the first sensing component and the second sensing component is as follows:

[0037] When a vehicle enters, the first sensing component is triggered first. Since the vehicle body has a certain length, the first sensing component is always in the triggered state. Then the second sensing component is triggered, and the controller determines that a vehicle has entered, and this primary criterion is met.

[0038] If a pedestrian enters, this primary criterion cannot be formed, thus preventing misjudgment;

[0039] During the process of parking at the car wash site, the vehicle will drive under the ultrasonic ranging sensor of the main body of the cleaning component of the cleaning device. The ultrasonic ranging sensor, the first sensing component, and the second sensing component determine the entry of the car through a timing relationship. With the pre-wash liquid nozzle and the ground indicator nozzle working at the same time, it is impossible for people to stand under the ultrasonic ranging sensor. Therefore, the advanced criteria formed by the combination can completely prevent people and other non-vehicle objects from entering the car wash site, thus perfectly solving the problem of misjudgment and erroneous actions of people entering the car wash site.

[0040] When the controller determines that the primary criterion is met, it immediately opens the pre-wash liquid nozzle of the pre-wash device and sprays pre-wash liquid onto the lower part of the vehicle body and the rear of the vehicle body through the pre-wash liquid nozzle.

[0041] The car moves forward until the front wheels approach the front wheel wells, and the front of the vehicle is close to the water jet on the ground. It then stops and remains stationary, not moving during the wash. During this time, the second sensor disengages from its triggered state, delays for approximately 3 seconds, and then shuts off the pre-wash solution pump. This ensures that the rear of the car is sprayed with car wash solution.

[0042] Compared with existing technologies, the advantages of this invention are: no need for license plate recognition cameras and barrier gates, ensuring smooth and uninterrupted vehicle entry and exit; a simple, intuitive, and clear parking position indication method, eliminating the need for customers to repeatedly adjust their positions; and the elimination of the need for electric roller shutters to isolate water mist. This solution employs two sets of sensors at the entrance, relying on logical judgment to identify vehicles and using indicator water jets to further prevent misjudgments, resulting in low cost and reliable operation. Replacing electric roller shutters with air curtains significantly reduces safety hazards and eliminates the psychological pressure of a confined environment for customers. Therefore, throughout the entire car wash process, vehicles can enter and exit the car wash area without obstacles, providing a smooth customer experience and greatly improving efficiency, making it more suitable for unattended services. Attached Figure Description

[0043] Figure 1 This is a top view of the present invention.

[0044] Figure 2 This is a front view of the present invention.

[0045] Figure 3 This is the wastewater reuse structure of the present invention.

[0046] Figure 4 A side view of an embodiment in which the first sensing component employs a microwave radar detector.

[0047] Figure 5 This is a control block diagram.

[0048] Figure label:

[0049] 1. Car wash area; 2. First sensing component; 3. Second sensing component; 4. Indicator nozzle; 5. Pre-wash device; 6. Washing device; 7. Washing components; 8. Slide rail; 9. Sedimentation tank; 10. Medium water tank; 11. Water pump; 12. Filter screen; 13. Ozone generator; 14. Overflow outlet; 15. Water outlet; 16. Municipal pipeline; 17. High-pressure cleaning pump; 18. Inlet location; 19. Air curtain machine; 20. Ultrasonic ranging sensor; 21. Front wheel stop; 22. Parking indicator area; 23. Car wash area; 40. Parking indicator structure; 51. Pre-wash liquid nozzle; 52. Lighting; 24. Controller. Detailed Implementation

[0050] To enable those skilled in the art to better understand the present invention and to more clearly define the scope of protection claimed by the present invention, the present invention will be described in detail below with reference to certain specific embodiments. It should be noted that the following are only some specific embodiments of the present invention, and are merely a part of the embodiments of the present invention. The specific and direct descriptions of related structures are only for the convenience of understanding the present invention, and the specific features do not necessarily or directly limit the scope of the present invention.

[0051] See appendix Figure 1 Top view, appendix Figure 2 As shown in the front view, the present invention adopts the following technical solution: an intelligent car wash system, comprising:

[0052] A car wash area 1 is provided with an entrance position 18, a parking instruction area 22, and a car wash area 23 located between the entrance position 18 and the parking instruction area 22. The entrance position 18 and the parking instruction area 22 are located at opposite ends along the length of the car wash area 1.

[0053] The first sensing component 2 and the second sensing component 3 are installed at intervals along the length of the car wash area 1 at the entrance position 18 at the first end of the car wash area 1. The horizontal distance between the detection areas of the first sensing component 2 and the second sensing component 3 is greater than the distance of a person.

[0054] The parking instruction structure 40 includes an instruction nozzle 4, which is installed in the parking instruction area 22. The instruction nozzle 4 is installed at the second end of the car wash area 1 opposite to the first end. The instruction nozzle 4 sprays water at least upward. When a vehicle enters the car wash area 1, if the front of the vehicle hits the sprayed water column, the driver will stop according to the instruction. Figure 1 The dashed box in the middle represents parking instruction area 22.

[0055] A cleaning device 6 is installed at the car wash site 1, and the cleaning device 6 includes at least one movable cleaning component 7, such as an existing air-drying contactless car wash machine, to clean the vehicle from all angles.

[0056] The controller 24, the first sensing component 2, the second sensing component 3, the indicator nozzle 4 and the cleaning device 6 are respectively connected to and controlled by the controller 24;

[0057] When the vehicle reaches the entrance position 18, the first sensing component 2 and the second sensing component 3 transmit the sensed signals to the controller 24. The controller 24 controls the indicator nozzle 4 to spray water jets upward according to the sensed signals. The height of the water jet is higher than the height of the front of the vehicle. The vehicle continues to drive to the car wash area 23. The driver observes from inside the vehicle whether the water jet is close to the front of the vehicle or whether the water jet disappears, in order to determine whether the parking position has been reached.

[0058] The number of indicator nozzles 4 is set to two, which are arranged at an angle to each other so that the sprayed water jets form an arched shape. They are located on opposite sides of the rear side of the parking indicator area 22 in the width direction, and the height of the arched water jet shape is higher than the height of the front of the vehicle. Full-spectrum lighting lamps 52 are installed around the indicator nozzles 4. At the extreme position of the front of the vehicle at the inner end of the car wash area, there is a single indicator nozzle 4 spraying a single water jet, or a group of indicator nozzles 4 spraying a surface-distributed water jet.

[0059] A front wheel stop 21 is installed on the ground near the second end of the car wash area 1; an air curtain 19 is installed above the exit and / or entrance position 18 of the car wash area 1; an ultrasonic ranging sensor 20 is installed on the cleaning component 7 of the cleaning device 6, which can be electrically connected to the controller 24 to measure vehicle body data and determine whether there is a vehicle below.

[0060] It also includes a pre-wash device 5, which is connected to and controlled by the controller 24. The pre-wash device 5 includes a pre-wash liquid nozzle 51, and the pre-wash liquid nozzles 51 are installed on both opposite sides of the width direction of the car wash area 23.

[0061] Figure 1 The first sensing component 2 in the illustrated embodiment is a through-beam photoelectric switch. This sensor has a transmitter and a receiver, which are horizontally positioned, separated, and opposite each other on both sides of the car wash area 1. The sensor is triggered when an object at the entrance position 18 blocks the light path between the transmitter and receiver. Alternatively, the first sensing component 2 can be a microwave radar sensor switch, installed above the entrance position 18, angled downwards, and aimed at the direction of oncoming vehicles in front of the car wash area 1, operating in the same way as various automatic doors detect people entering the door. The second sensing component 3 is a through-beam photoelectric switch, installed below the first sensing component 2, at a height of approximately 40cm from the ground.

[0062] Essentially, when the first sensing component 2 detects oncoming vehicles using a microwave radar sensor switch, it can also be replaced by other measuring sensors that operate on the principle of reflection, such as ultrasonic ranging sensors or reflective photoelectric sensors. In this way, the sensor is installed at an angle downwards, towards the direction of oncoming traffic. This ensures that even if the first sensing component 2 is installed directly above the second sensing component 3, the horizontal distance between their detection areas is greater than the thickness of a human body. This selection and installation can shorten the required length of the car wash area 1. Figure 4 As shown.

[0063] like Figure 3 As shown, it also includes a wastewater reuse system, which includes: a sedimentation tank 9 connected to the bottom of the ground of the car wash site 1, a medium water tank 10, a water pump 11 connecting the sedimentation tank 9 and the medium water tank 10, a filter screen 12 installed in the medium water tank 10, and an ozone generator 13, which is introduced into the bottom of the medium water tank 10. The medium water tank 10 is connected to an overflow outlet 14 and a water outlet 15 at the top and bottom, respectively. The overflow outlet 14 discharges sewage to the municipal pipe network 16, and the water outlet 15 is connected to the cleaning nozzle of the cleaning device 6 through a high-pressure cleaning pump 17.

[0064] Through the above technical solution, since there are no gates or other barriers at the entrances and exits of this system, customers can enter and exit quickly and without obstacles, resulting in higher operational efficiency. The system also uses wastewater recycling to reduce costs and is in line with green principles.

[0065] Wastewater from car washing flows naturally into sedimentation tank 9 for primary sedimentation, where large particles of silt are separated. The sediment then passes through filter screen 12 and is pumped by wastewater pump 11 into a medium-water tank 10. From there, the medium-water tank 10 supplies water to the high-pressure cleaning pump 17 for vehicle body cleaning. The medium-water tank 10 is equipped with a fine filter screen 12 of 150-300 mesh or finer to prevent particulate matter from the wastewater pump 11 from entering the medium-water tank 10. An ozone generator 13 is also included to produce ozone, which is then sent to the bottom of the water in the medium-water tank 10 to achieve sterilization, deodorization, and turbidity reduction.

[0066] In practice, the pre-wash device 5 can be installed not only on both sides of the first end of the car wash area, but also above the second end. After the vehicle is parked, pre-wash liquid is sprayed from top to bottom onto the front of the vehicle and the windshield. This pre-wash liquid can be a detergent designed specifically for the insect residue and glass properties of the front of the vehicle.

[0067] The first end is the inlet position 18, and the second end is the end with the water column.

[0068] Existing cantilevered contactless car wash machines, which have a sliding rail 8 and a cleaning component 7 that moves along the rail, can be used. The washable length of the vehicle is determined by the rear position. If the front of the car is not properly positioned, it may be too long to wash; if the front is too far forward, there is a risk of the cantilever arm scraping the front. Using sensors to detect the front position is not intuitive and is difficult to operate. Since the distance from the front wheel axle to the front of the vehicle is similar for different models, the deviation in front position determined by wheel position is about 100mm. Therefore, by setting the front wheel stop position according to vehicles with a longer distance from the front wheel axle to the front, and then guiding the driver to stop the front wheels at the front wheel stop 21, the car's parking position can be effectively guaranteed. This method is simple and easy to operate.

[0069] The lower part of the car body is one of the areas with the thickest layers of dirt. Therefore, a pre-wash device 5 was added, allowing targeted cleaning agents such as mud and sand loosening agents to be used on the lower part of the car body. The agents are sprayed and absorbed immediately upon the car entering, increasing the dissolution time by an average of about 3 minutes, allowing for a more thorough reaction and significantly improving the cleaning effect. Compared to conventional cantilevered contactless car wash machines where the foam nozzles are mounted on the main body, this method ensures a more effective cleaning of the lower part of the car body.

[0070] While the controller 24 starts the pre-wash device 5, it immediately opens the indicator nozzle 4 at the front of the car wash area 1. The indicator nozzle 4 can be controlled by the existing water pump equipment to spray a water jet in the shape of a "water gate" at the front limit of the car in front of the car wash area 1. Speakers can be added to the walls on both sides of the car wash area 1. The speakers are electrically connected to the output of the controller 24 and simultaneously notify the driver to stop the vehicle at the front wheel block 21.

[0071] S1. When the car to be washed arrives at the car wash area 1, it drives straight in, i.e., the vehicle is controlled to drive to the entrance position 18. At this time, the first sensing component 2 and the second sensing component 3 transmit sensing information to the controller 24, and the controller 24 makes a judgment; if it is judged that the first sensing component 2 and the second sensing component 3 are both in the triggered state, the controller 24 controls the pre-wash device 5 and the indicator nozzle 4 to open according to the judgment state; if it is judged that the triggered state has changed, i.e. the first sensing component 2 is in the triggered state and the second sensing component 3 is not in the triggered state, the controller 24 controls the pre-wash device 5 and the indicator nozzle 4 to close according to the judgment state.

[0072] Step S1 further includes: during the process of a vehicle entering from the entrance position 18, the first sensing component 2 is triggered first. Due to the length of the vehicle body, the first sensing component 2 remains in the triggered state. Then, the second sensing component 3 is triggered, and the controller 24 determines that a vehicle has entered. This primary criterion is met, and the controller controls the pre-wash liquid nozzle 51 and the indicator nozzle 4 of the pre-wash device 5 to open. That is, the first sensing component 2 is triggered first, and then, while the first sensing component 2 remains triggered, the second sensing component 3 is subsequently triggered. Thus, the controller 24 determines that a car has entered and immediately turns on the control water pump of the pre-wash liquid nozzle 51, spraying pre-wash liquid onto the lower part and rear of the vehicle body through the pre-wash liquid nozzle 51. At the same time, the indicator nozzle 4 in front of the car wash area 1 sprays water jets to indicate the front limit of the vehicle and guide it to park.

[0073] S2. Determining whether the front of the vehicle has reached the parking instruction area 22 while the vehicle is in motion; The driver inside the vehicle determines whether the vehicle has stopped at the automatic car wash position based on whether the wheels are against the front wheel block 21, whether the front of the vehicle is blocking the water jet of the indicator nozzle 4, or whether the front of the vehicle is close to the water jet of the indicator nozzle 4.

[0074] Step S2 further includes: when the vehicle reaches the required position for car washing, the vehicle is in a parked state, the second sensing component 3 moves away from the vehicle to disengage from the trigger state, and the controller 24 delays and closes the pre-wash liquid nozzle 51 and the indicator nozzle 4 of the pre-wash device 5 based on the information that the second sensing component 3 is in a non-triggered state; that is, when the second sensing component 3 disengages from the trigger state, the spraying of pre-wash liquid stops after a short delay. At the same time, the car moves forward, the front wheels approach the front wheel stop 21, and the front of the car does not press against the water jet of the indicator nozzle 4, entering a parked state. If the vehicle advanced criterion is still not met when the spraying of pre-wash liquid stops, it is considered a false trigger and no vehicle is detected.

[0075] S3, Car Wash Control: The driver of the vehicle uses a mobile terminal to scan a code to obtain a car wash program to request a car wash or uses a car wash app on the mobile terminal to request a car wash. The program system checks whether there are any outstanding fees for historical orders. If the check shows that the fees have been paid, the controller 24 controls the cleaning device 6 to perform cleaning based on the feedback that the fees have been paid. When spraying high-pressure water, the air curtain 19 is opened simultaneously. If the check shows that the fees have not been paid, the payment information is displayed in the car wash program or car wash app, and the cleaning device does not work.

[0076] Car wash liquid is sprayed onto the entire vehicle, and the high-pressure water jet from the cleaning device 6 is used to remove dirt from the vehicle's surface. During the high-pressure water wash, the air curtain 19 is simultaneously activated to prevent water mist from overflowing and affecting the external environment.

[0077] The driver determines whether the vehicle is parked correctly by checking whether the wheels are against the front wheel block 21 and whether the front of the vehicle is blocking the water jet from the indicator nozzle 4. The driver can then request a car wash by scanning a code on the mobile terminal, through a mini-program, or through an app. The system checks whether there are any outstanding fees for previous orders. Once the fees are paid, the system controls the cleaning device 6 to perform the cleaning, and simultaneously opens the air curtain machine 19 while spraying high-pressure water. After the car wash is finished, the driver drives away. The driver settles the fees before the next car wash.

[0078] The determination method for the first sensing component 2 and the second sensing component 3 is as follows:

[0079] When a vehicle enters, the first sensing component 2 is triggered first. Since the vehicle body has a certain length, the first sensing component 2 is always in the triggered state. Then the second sensing component 3 is triggered, and the controller 24 determines that a vehicle has entered, and the primary criterion is met.

[0080] If a pedestrian enters, this primary criterion cannot be formed, thus preventing misjudgment.

[0081] During the process of parking at the car wash area 1, the vehicle will drive under the ultrasonic ranging sensor 20 of the main body of the cleaning component 7 of the cleaning device 6. The ultrasonic ranging sensor 20, the first sensing component 2, and the second sensing component 3 determine the entry of the car through a timing relationship. When the pre-wash liquid nozzle 51 and the ground indicator nozzle 4 are working at the same time, it is impossible for people to stand under the ultrasonic ranging sensor 20. Therefore, the advanced criteria formed by the combination of these factors prevent people and other non-vehicle objects from entering the car wash area, thereby solving the problem of misjudgment and erroneous actions of people entering the car wash area 1.

[0082] When the controller 24 determines that the primary criterion is met, it immediately opens the pre-wash liquid nozzle 51 of the pre-wash device 5, spraying pre-wash liquid onto the lower part of the vehicle body and the rear of the vehicle through the pre-wash liquid nozzle 51. The control system of the above-mentioned judgment method is as follows: Figure 5 As shown.

[0083] The car moves forward until the front wheels approach the front wheel stop 21, and the front of the vehicle is close to the water column on the ground. Then it stops and remains stationary, not moving during the car wash. During this time, the second sensor component 3 disengages from the triggered state, delays for about 3 seconds, and then shuts off the pump of the pre-wash liquid nozzle 51. This ensures that the bottom of the wheels and other areas are sprayed with car wash liquid.

[0084] Compared with existing technologies, the advantages of this invention are: no need for license plate recognition cameras and access control gates, ensuring smooth and uninterrupted vehicle entry and exit; a simple, intuitive, and clear parking position indication method, eliminating the need for customers to repeatedly adjust their positions; and the elimination of the need for electric roller shutters to isolate water mist. This solution employs two sets of sensors at the entrance, relying on logical judgment to identify vehicles and using indicator water jets to further prevent misjudgments, resulting in low cost and reliable operation. Replacing electric roller shutters with air curtain machines (19) significantly reduces safety hazards and eliminates the psychological pressure of a confined environment for customers. Therefore, throughout the entire car wash process, vehicles can enter and exit the car wash area without obstacles, providing a smooth customer experience and greatly improving efficiency, making it more suitable for unattended services.

[0085] In this design, both the front wheel stop 21 and the water jet from the indicator nozzle 4 can serve as the basis for vehicle parking limit design; whether or not the water jet is pressed can be used as a criterion for vehicle limit. However, considering the differences in vehicle front length and driver operating accuracy, the aforementioned differences exist, demonstrating a difference in rationality.

[0086] The purpose of the water jet settings for the front wheel stop 21 and the indicator nozzle 4 is firstly to prevent the car from moving too far forward, ensuring that the cantilevered contactless car wash machine does not scrape the front of the car. Secondly, it guides the front of the car to move as far forward as possible, improving the cleaning effect on the front of the car.

[0087] In summary, you can configure it according to your actual needs.

[0088] The indicator nozzle 4 cannot be powered by the high-pressure cleaning pump 17; other pumps with lower pressure can be used instead.

[0089] The above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. An intelligent car wash machine system, characterized by: The car washing site (1) is provided with an entrance position (18), a parking indication area (22), a car washing area (23) between the entrance position (18) and the parking indication area (22), the entrance position (18) and the parking indication area (22) are respectively located at both ends along the length direction of the car washing site (1); A first sensing assembly (2) and a second sensing assembly (3) are installed at the entrance position (18) of the first end of the car washing site (1) in a spaced manner along the length direction of the car washing site (1), the horizontal distance of the detection areas of the first sensing assembly (2) and the second sensing assembly (3) is greater than the distance of a person's body; A parking indication structure (40) includes an indication nozzle (4) installed in the parking indication area (22); A cleaning device (6) is installed in the car washing site (1), and the cleaning device (6) includes at least one movable cleaning component (7) for omnidirectional cleaning of the vehicle; A controller (24) is connected to and controlled by the first sensing assembly (2), the second sensing assembly (3), the indication nozzle (4) and the cleaning device (6); When the vehicle drives to the entrance position (18), the first sensing assembly (2) and the second sensing assembly (3) transmit the sensed sensing signals to the controller (24), the controller (24) controls the indication nozzle (4) to spray water column upward according to the sensing signals, the height of the water column is higher than the height of the vehicle head, the vehicle continues to drive to the car washing area (23), and the driver in the vehicle observes whether the water column is close to the front face of the vehicle or the water column disappears to determine whether the parking position is reached; It also includes a pre-washing device (5) connected to and controlled by the controller (24), the pre-washing device (5) includes a pre-washing liquid nozzle (51), and the pre-washing liquid nozzles (51) are installed on opposite sides in the width direction of the car washing area (23); The first sensing assembly (2) and the second sensing assembly (3) transmit sensing information to the controller (24), and the controller (24) judges; If it is judged that the first sensing assembly (2) and the second sensing assembly (3) are both in the triggered state, the controller (24) controls the pre-washing device (5) and the indication nozzle (4) to be turned on according to the judgment state; If it is judged that the triggered state changes, that is, the first sensing assembly (2) is in the triggered state and the second sensing assembly (3) is not in the triggered state, the controller (24) controls the pre-washing device (5) and the indication nozzle (4) to be turned off according to the judgment state. The number of the indication nozzles (4) is two, the two indication nozzles (4) are oppositely arranged in a diagonal direction to form an arched water column shape, and are respectively located on opposite sides in the width direction of the rear side position of the parking indication area (22), the height of the arched water column shape is higher than the height of the vehicle head.

2. The intelligent car washing machine system of claim 1, wherein: ​ 3. The intelligent car wash machine system of claim 1 or 2, wherein: The front side of the parking indicating area (22) is provided with a front wheel stopper (21).

4. The intelligent car washing machine system of claim 1, wherein: The first sensing component (2) is a microwave radar sensing switch, which is installed above the entrance position (18) and detects the oncoming vehicle obliquely forward; The second sensing component (3) is a reflection type photoelectric switch, which is installed below the first sensing component (2).

5. The intelligent car washing machine system of claim 1, wherein: The indicating nozzle (4) is provided with a full-spectrum illuminating lamp (52) on the side.

6. The intelligent car washing machine system of claim 1, wherein: The exit and / or entrance position (18) of the car washing site (1) is provided with a wind curtain machine (19); the cleaning component (7) of the cleaning device (6) is provided with an ultrasonic ranging sensor (20) to measure the vehicle body data and determine whether there is a vehicle below.

7. The intelligent car washing machine system of claim 1, wherein: It also comprises a sewage reuse system and an ozone generator (13), wherein the sewage reuse system comprises a sedimentation tank (9) communicated with the bottom of the ground of the car washing site (1), a reclaimed water bucket (10), a water pump (11) connecting the sedimentation tank (9) and the reclaimed water bucket (10), a filter screen (12) installed in the reclaimed water bucket (10), the ozone generator (13) is communicated with the bottom of the reclaimed water bucket (10), the reclaimed water bucket (10) is connected with an overflow outlet (14) and a water outlet (15) respectively, the overflow outlet (14) is connected with a municipal pipe network (16) for sewage discharge, and the water outlet (15) is connected with the cleaning nozzle of the cleaning device (6) through a high-pressure cleaning pump (17).

8. A car washing method, which adopts the intelligent car washing machine system according to any one of claims 1-7 to realize car washing, and comprises the following steps: S1. Control of the vehicle driving to the entrance position (18); The first sensing component (2) and the second sensing component (3) transmit sensing information to the controller (24), which makes a judgment; if it is judged that both the first sensing component (2) and the second sensing component (3) are in the triggered state, the controller (24) controls the pre-washing device (5) and the indicating nozzle (4) to start according to the judgment state; if it is judged that the triggered state is changed, i.e. the first sensing component (2) is in the triggered state and the second sensing component (3) is not in the triggered state, the controller (24) controls the pre-washing device (5) and the indicating nozzle (4) to stop according to the judgment state; S2. Judgment of whether the vehicle head reaches the parking indicating area (22) during driving; The driver in the vehicle judges whether the vehicle stops at the position for automatic car washing according to whether the wheels of the vehicle abut against the front wheel stopper (21), whether the vehicle head blocks the water column of the indicating nozzle (4) or whether the vehicle head is close to the water column of the indicating nozzle (4); S3. Car washing control; The driver of the vehicle obtains the car washing program by scanning the code with the mobile terminal or requests car washing by using the car washing app of the mobile terminal, the program system checks whether the historical order is overdue, if it is judged that the payment is made, the controller (24) controls the cleaning device (6) to clean according to the feedback of the payment, and the wind curtain machine (19) is opened synchronously when high-pressure water is sprayed, if it is judged that the payment is not made, the car washing program or the car washing app prompts the payment information, and the cleaning device (6) does not work.

9. The car washing method according to claim 8, wherein: In step S1 also includes: In the process of the vehicle driving into the entrance position (18), the first sensing component (2) is triggered first, because the vehicle body has a certain length, the first sensing component (2) is always in the triggered state, and then the second sensing component (3) is triggered. The controller judges that a vehicle enters, the primary criterion is established, and the pre-washing device (5) is controlled to open the pre-washing nozzle and the indicating nozzle (4). In step S2 also includes: When the vehicle reaches the required position for washing the car, the vehicle is in a stationary state, the second sensing component (3) is away from the vehicle so as to be out of the triggered state, and the controller (24) delays the closing of the pre-washing nozzle (51) and the indicating nozzle (4) of the pre-washing device (5) according to the information that the second sensing component (3) is in the untriggered state.

Images