Full-automatic car washing machine system based on liquid level self-adaption and control method

Abstract

The present application relates to car washing machine automation control technical field, especially in kind of based on liquid level adaptive full-automatic car washing machine system and control method, system includes car washing machine body, main control module, clean water pool, sewage pool, vehicle detection module, execution module, display module, fault monitoring unit, manual operation unit and remote communication unit, clean water pool is provided with high liquid level detection device, low liquid level detection device, overflow pipe, water inlet valve and car washing water pump, each detection and execution unit in system is connected with main control module communication.The present application realizes car washing process and liquid level supply full-automatic linkage, full-automatic liquid level adaptive control, does not need artificial watch, is applicable to unmanned car washing scene;High and low liquid level double protection, water source recycling, avoid water shortage and overflow waste;Fault monitoring and manual emergency mode, improve system reliability;Reasonable structure design, easy to implement, adapt to various full-automatic car washing machine transformation of factory.

Description

Technical Field

[0001] This invention relates to the field of automated control technology for car wash machines, and in particular to a fully automatic car wash machine system and control method based on liquid level self-adaptation. Background Technology

[0002] Traditional fully automatic car wash machines often experience interruptions in operation due to insufficient water levels in the clean water tank, requiring manual intervention to replenish the water, resulting in a low level of automation. Although some car wash machines are equipped with water replenishment devices, the water level control is lagging, easily leading to water shortages, shutdowns, or overflows that waste water resources, affecting the continuous and stable operation of the car wash machine and increasing manual maintenance costs. Summary of the Invention

[0003] To address the problems existing in the prior art, the present invention provides a fully automatic car wash system and control method based on liquid level self-adaptation.

[0004] In a first aspect, the present invention provides a fully automatic car wash system based on liquid level self-adaptation, including a car wash machine body, a main control module, a clean water tank, a sewage tank, a vehicle detection module, an execution module, a display module, a fault monitoring unit, a manual operation unit, and a remote communication unit. The clean water tank is equipped with a high liquid level detection device, a low liquid level detection device, an overflow pipe, a water inlet valve, and a car wash water pump. All detection and execution units in the system are communicatively connected to the main control module.

[0005] Preferably, the car wash machine body includes an inlet end, an outlet end, and a cleaning chamber.

[0006] Preferably, the vehicle detection module includes an inlet sensor and an outlet sensor.

[0007] Preferably, the execution module includes an exit barrier and a release indicator light.

[0008] Preferably, the main control module adopts a PLC controller or an embedded microcontroller.

[0009] Preferably, the high liquid level detection device and the low liquid level detection device adopt an immersion liquid level transmitter.

[0010] Preferably, the water inlet valve is a solenoid valve.

[0011] Preferably, the inlet and outlet sensing devices are diffuse reflection sensors.

[0012] Secondly, the present invention provides a fully automatic car wash machine control method based on liquid level adaptive control, comprising the following steps: S1. The system is powered on, the water level in the purification tank is at the initial value, and the main control module monitors the signal of the inlet sensor in real time. S2. Imported sensing devices detect in real time whether a vehicle enters the cleaning chamber. If a vehicle is detected, the car wash process is triggered and the car wash water pump is turned on. S3. The main control module obtains the liquid level status data of the water purification tank. If the liquid level is greater than or equal to the lower limit, it is determined that the water supply in the water purification tank is sufficient, and the car wash water pump is automatically turned on to perform vehicle washing operations according to the preset time. If the liquid level in the water purification tank is less than the lower limit, it is determined that the water supply in the water purification tank is insufficient, the low liquid level detection device sends a water replenishment signal, and the main control module opens the water inlet valve to replenish water. When the water level in the purification tank rises to the upper limit, the high level detection device sends a water replenishment shutdown signal, and the main control module closes the inlet valve to stop water replenishment. The whole process achieves adaptive water replenishment. After the system is powered on, the low liquid level detection device and the high liquid level detection device continuously monitor the liquid level and pre-fill water when the liquid level is low. S4. After the washing is completed, the main control module turns off the car wash water pump, sends a command to raise the exit barrier and light up the release indicator light to allow the vehicle to leave; after the vehicle leaves the car wash machine, the exit barrier automatically falls down, the system returns to the initial state, and waits for the next car wash operation to be triggered. S5. Wastewater from car washing is returned to the wastewater tank. After sedimentation and flocculation, the water overflows from the top into the clean water tank. The wastewater tank is equipped with a drain outlet for regular discharge.

[0013] Preferably, the preset timer duration in S3 can be configured according to the vehicle model and cleaning requirements, and can be manually modified or automatically adjusted.

[0014] In summary, the present invention has at least one of the following beneficial technical effects: It achieves fully automatic linkage between the car wash process and liquid level replenishment, with fully automatic adaptive liquid level control, requiring no manual operation and suitable for unmanned car wash scenarios; Dual protection for high and low liquid levels, water source recycling, avoiding water shortage shutdowns and overflow waste; Fault monitoring and manual emergency mode improve system reliability; The structure is reasonably designed and easy to implement, making it suitable for retrofitting various fully automatic car wash machines in factories. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a fully automatic car wash system based on liquid level self-adaptation according to an embodiment of the present invention.

[0016] Explanation of reference numerals in the attached diagram: 1. Car wash machine body; 11. Inlet end; 12. Outlet end; 13. Cleaning chamber; 2. Main control module; 3. Clean water tank; 31. High liquid level detection device; 32. Low liquid level detection device; 33. Overflow pipe; 34. Water inlet valve; 35. Car wash water pump; 4. Sewage tank; 5. Vehicle detection module; 51. Inlet sensor; 52. Outlet sensor; 6. Execution module; 61. Outlet barrier; 62. Release indicator light; 7. Display module; 8. Fault monitoring unit; 9. Manual operation unit; 10. Remote communication unit. Detailed Implementation

[0017] The following combination Figure 1 The present invention will be described in further detail below.

[0018] This invention discloses a fully automatic car wash system based on liquid level self-adaptation, including a car wash machine body 1, a main control module 2, a clean water tank 3, a sewage tank 4, a vehicle detection module 5, an execution module 6, a display module 7, a fault monitoring unit 8, a manual operation unit 9, and a remote communication unit 10; each detection or execution module is communicatively connected to the main control module 2 and is uniformly controlled by the main control module 2.

[0019] The car wash machine body 1 includes an inlet end 11, an outlet end 12, and a cleaning chamber 13 for washing vehicles. The main control module 2 uses a Siemens S7-200 SMART PLC controller or an embedded microcontroller with a built-in adaptive liquid level control program. The clean water tank 3 has a volume of 9m³ and is equipped with a high liquid level detection device 31 and a low liquid level detection device 32. The high liquid level detection device 31 and the low liquid level detection device 32 are submersible liquid level transmitters with a measurement range of 0-5m and an output of a 4-20mA standard signal.

[0020] The water purification tank 3 is equipped with an overflow pipe 33, an inlet valve 34, and a car wash water pump 35. The overflow pipe 33 is used to prevent water overflow caused by the failure of the inlet valve 34. The inlet valve 34 is a DN100 electric stainless steel solenoid valve with a nominal pressure of 1.6MPa and a manual emergency opening and closing function. When the system fails, water replenishment or water stop operation can be completed in manual mode. The car wash water pump 35 has a power of 15kW and a rated flow of 25m³ / h.

[0021] Wastewater tank 4 is connected to clean water tank 3. Wastewater tank 4 has a volume of 9m³. When full, it automatically overflows into clean water tank 3. Wastewater tank 4 is equipped with a drain outlet for periodic drainage. Vehicle detection module 5 includes an inlet sensor 51 installed at the inlet end 11 and an outlet sensor 52 installed at the outlet end 12. Both inlet sensor 51 and outlet sensor 52 use diffuse reflection sensors (such as infrared beam sensors or ultrasonic ranging sensors). The sensor detection signal delay time is less than 0.5 seconds, and the detection accuracy is ±0.1m, ensuring real-time vehicle entry and exit detection.

[0022] The execution module 6 includes an outlet guide rod 61 and a release indicator light 62 located at the outlet end 12. The lifting and lowering response time of the outlet guide rod 61 is ≤1s. The display module 7 uses a 7-inch touch screen to display the liquid level value, operating status, and fault information in real time. The fault monitoring unit 8 is used to detect the status of sensors, water pumps, and valves in real time. When an abnormality occurs, it switches to the manual operation unit 9 mode and uploads alarm information through the remote communication unit 10.

[0023] The control method of the fully automatic car wash system based on liquid level self-adaptation according to this invention includes the following steps: S1. The system is powered on, the water level in the water purification tank 3 is at the initial value, and the main control module 2 monitors the signal of the inlet sensor 51 in real time. S2. The imported sensor 51 detects in real time whether a vehicle enters the cleaning chamber 13. If a vehicle is detected, the car wash process is triggered and the car wash water pump 35 is turned on. S3. The main control module 2 obtains the liquid level status data of the water purification tank 3. If the liquid level is greater than or equal to the lower limit (20% of the volume of the water purification tank 3), it is determined that the water supply of the water purification tank 3 is sufficient, and the car wash water pump 35 is automatically turned on to perform the vehicle washing operation according to the preset time (e.g., 3 minutes). If the liquid level of the water purification tank 3 is less than the lower limit, it is determined that the water supply of the water purification tank 3 is insufficient, the low liquid level detection device 32 sends a water replenishment signal, and the main control module 2 opens the water inlet valve 34 to replenish water. When the water level in the water purification tank 3 rises to the upper limit (90% of the volume of the water purification tank 3), the high water level detection device 31 sends a water replenishment shutdown signal, the main control module 2 closes the water inlet valve 34, and stops water replenishment. The whole process achieves adaptive water replenishment. The preset time duration can be configured according to the vehicle model and cleaning needs, and supports manual modification or automatic adaptation and adjustment. After the system is powered on, the low liquid level detection device 32 and the high liquid level detection device 31 continuously detect the liquid level and pre-replenish water when the liquid level is low. S4. After the washing is completed, the main control module 2 shuts off the car wash water pump 35, sends a command to raise the exit barrier 61, and lights up the release indicator 62 to allow the vehicle to leave. After the vehicle leaves the car wash machine body 1, the exit barrier 61 automatically falls down, the system returns to the initial state, and waits for the next car wash operation to be triggered. S5. Wastewater from car washing is returned to wastewater tank 4. After sedimentation and flocculation, the water overflows from the top to clean water tank 3, realizing the recycling of water resources. Wastewater tank 4 is equipped with a sewage outlet for regular sewage discharge.

[0024] The fully automatic car wash system and control method based on liquid level self-adaptation according to embodiments of the present invention have the following advantages: 1. It realizes fully automatic linkage between the car wash process and liquid level replenishment, with fully automatic adaptive liquid level control, requiring no manual operation, and is suitable for unmanned car wash scenarios; 2. Dual protection for high and low liquid levels, water source recycling, avoiding water shortage shutdowns and overflow waste; 3. Fault monitoring and manual emergency mode improve system reliability; 4. The structure is reasonably designed and easy to implement, and it is compatible with the retrofitting of various fully automatic car wash machines in factories.

[0025] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A fully automatic car wash system based on liquid level self-adaptation, characterized in that: The system includes a car wash machine body (1), a main control module (2), a clean water tank (3), a sewage tank (4), a vehicle detection module (5), an execution module (6), a display module (7), a fault monitoring unit (8), a manual operation unit (9), and a remote communication unit (10). The clean water tank (3) is equipped with a high liquid level detection device (31), a low liquid level detection device (32), an overflow pipe (33), a water inlet valve (34), and a car wash water pump (35). All detection and execution units in the system are connected to the main control module (2) for communication.

2. The fully automatic car wash system based on liquid level self-adaptation according to claim 1, characterized in that: The car wash machine body (1) includes an inlet end (11), an outlet end (12), and a cleaning chamber (13).

3. The fully automatic car wash system based on liquid level self-adaptation according to claim 1, characterized in that: The vehicle detection module (5) includes an inlet sensor (51) and an outlet sensor (52).

4. The fully automatic car wash system based on liquid level self-adaptation according to claim 1, characterized in that: The execution module (6) includes an exit gate (61) and a release indicator (62).

5. The fully automatic car wash system based on liquid level self-adaptation according to claim 1, characterized in that: The main control module (2) adopts a PLC controller or an embedded microcontroller.

6. The fully automatic car wash system based on liquid level self-adaptation according to claim 1, characterized in that: The high liquid level detection device (31) and the low liquid level detection device (32) adopt submersible liquid level transmitters.

7. The fully automatic car wash system based on liquid level self-adaptation according to claim 1, characterized in that: The water inlet valve (34) is a solenoid valve.

8. The fully automatic car wash system based on liquid level self-adaptation according to claim 1, characterized in that: The inlet sensing device (51) and the outlet sensing device (52) are diffuse reflection sensors.

9. A control method for a fully automatic car wash system based on liquid level adaptation as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. The system is powered on, the water level in the water purification tank (3) is at the initial value, and the main control module (2) monitors the signal of the inlet sensor (51) in real time. S2. The imported sensing device (51) detects in real time whether a vehicle enters the cleaning chamber (13). If a vehicle is detected, the car wash process is triggered and the car wash water pump (35) is turned on. S3. The main control module (2) obtains the liquid level status data of the water purification tank (3). If the liquid level is greater than or equal to the lower limit, it is determined that the water source of the water purification tank (3) is sufficient, and the car wash water pump (35) is automatically turned on to perform vehicle washing operation according to the preset time period. If the liquid level of the water purification tank (3) is less than the lower limit, it is determined that the water source of the water purification tank (3) is insufficient, the low liquid level detection device (32) sends a water replenishment signal, and the main control module (2) opens the water inlet valve (34) to replenish water. When the water level in the water purification tank (3) rises to the upper limit, the high water level detection device (31) sends a water replenishment shutdown signal, the main control module (2) closes the water inlet valve (34) and stops water replenishment, and the whole process realizes adaptive water replenishment; After the system is powered on, the low liquid level detection device (32) and the high liquid level detection device (31) continuously detect the liquid level and pre-fill water when the liquid level is low. S4. After the washing is completed, the main control module (2) shuts off the car wash water pump (35), sends a command to raise the exit barrier (61), and lights up the release indicator (62) to allow the vehicle to leave. After the vehicle leaves the car wash machine body (1), the exit barrier (61) automatically falls down, the system returns to its initial state, and waits for the next car wash operation to be triggered. S5. The wastewater from car washing is returned to the wastewater tank (4). After sedimentation and flocculation, the water overflows from the top to the clean water tank (3). The wastewater tank (4) is equipped with a sewage outlet for regular sewage discharge.

10. The control method for a fully automatic car wash system based on liquid level self-adaptation according to claim 9, characterized in that: The preset timeout duration in S3 can be configured according to vehicle model and cleaning needs, and can be manually modified or automatically adjusted.

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