At present, domestic car washing machines mainly include domestic machines and imported car washing machines. The imported machines mainly include: Japanese machines (Daifuku, Meili, mk, Yeshui), German machines, Italian machines, and there are three domestic brands. More than a dozen manufacturers produce car washers, with many brands. The basic situation is this. After more than 30 years of development in developed countries, car washing machine technology has become relatively mature. For example, Japanese car washing machines are already the fourth generation of smart machines, while most domestic machines are still copy machines. The difference between a profiling machine and a smart machine is that they have different working principles.
1 The control of the motion trajectory of the brushes of the profiling car washing machine is controlled by the current sensor. When the brushes and the car body rub, the working current of the brush motor increases, and the current sensor controls the value according to the preset current. Adjust the size of the contact surface between the brush and the car body. The smart car wash machine scans the entire car model before the vehicle enters the car wash machine, and stores the scanned data in the central processor. The movement trajectory of the brush is controlled by the data stored in the central processor
2 Different computing speeds
Because the smart car washing machine needs to organize and analyze the collected data and has the function of judging the car model, it needs faster floating point computing speed, so the central part of the smart car washing machine The computing speed of the processor is much faster than that of the central processing unit of the copy car washing machine.
3 Safety performance has been greatly improved
Due to the adoption of advanced technical principles, the car washing machine is not affected by voltage fluctuations, bristles wear, equipment dry winding and other factors when working, and is safe Performance greatly improved.
The development history of car washing machines is: the first generation was a manually controlled car washing machine. In the early 1980s, automatic car washing machines were still in their infancy, and the technologies were not yet mature. The operation of the car washing machine relied entirely on human control. Control to complete. Therefore, there are relatively high technical requirements for operators, and because the operators' own skills and qualities are different, many artificial and unpredictable unsafe factors have been caused; at the same time, due to various technical limitations, there are also restrictions on washable models. , so the first-generation car washing machine was quickly eliminated from the market.
The second generation is a copy car washing machine. In the mid-1990s, various industrial control technologies were widely used in car washing machine products. The second generation products have made great progress compared with the first generation products and are no longer It relies entirely on manual control, but uses a "current sensor" to control the running trajectory of the car wash brush. After the high-speed rotating car wash brush contacts the car body, the load on the motor increases. The current sensor transmits the received current signal to the programmable industrial controller (plc) for processing, and then the plc instructs the solenoid valve to open the valve of the cylinder to control the car wash. The height of the brush from the car body. The second-generation car washing machine can already realize automatic car washing in the true sense, but it also has many defects. For example, since it relies on the size of the current to control the movement of the brush, the instability of the voltage has become the biggest problem, not because of the settings. If the current is too large, the brush will be too close to the car, causing damage to the car's paint; if the current is too small, the brush will be too far away from the car, making it impossible to clean the car. An accident may also occur due to the sudden damage of the current sensor causing the brush to not rise or fall. The second-generation car wash machine already uses a small number of sensors, but these sensors can only determine the parking position of the vehicle, the total length of the vehicle, etc., and do not yet have the function of identifying the car's appearance. Most of the car washing machine products seen in the domestic market now belong to the second generation of car washes and the third generation of smart car washers. After entering the 21st century, sensor technology has developed rapidly and the computing speed of chips has also continued to increase. Technically developed countries such as Japan, Europe and the United States have Car wash machines are the first to enter the era of smart car wash machines. This car wash machine has a variety of detection methods to accurately determine the car model. It has more than 50 pairs of built-in grating sensors, sound wave sensors, door mirror detection sensors, vehicle safe exit sensors, etc. Various sensors collect information to the CPU on the motherboard for processing. The CPU accurately identifies the car model and can determine the height of different parts of the car body and the position of various equipment before the brush touches the car body. Then, after calculation, the brushes are specified in advance. Movement trajectory, truly safe and fast car washing.
Since self-service car washes are commonly used in developed countries such as Japan, Europe and the United States, only smart car washes that use vehicle model identification technology can be used normally without the need for manual monitoring