Model recognition technology is one of the key technologies of various unmanned automatic car washing machines. It is the "eye" of unmanned automatic car washing machine. Without it, the world of car washing machine will be dark and the safety of car washing will be difficult to guarantee. To achieve safe and efficient car wash, car wash equipment must be equipped with advanced vehicle identification technology to accurately identify various models. Otherwise, the advanced car washing machine can only be a "vase" that can't be used. Let's take a look at the model recognition technology of the fully automatic computer washing machine with the automatic washing machine manufacturer:
Automatic car washing machines have been in China for more than 20 years, including many technological innovations. Each technological innovation is the inheritance and development of the previous generation of products. From the initial proximity sensor to detect the CCD (ie image sensor) technology that is not yet fully popular today, the vehicle identification technology of the car wash has undergone six updates. The Nissen unmanned automatic car washing machine adopts the internationally advanced fourth-generation vehicle identification technology. Below are the performance and technical comparisons of the six vehicle identification technologies:
Automatic computer washing machine
The 1st generation is a proximity sensor detection technology that was applied in Japan in the early 1960s and early 1970s. It uses a proximity sensor to control the top brush running trajectory, which can only roughly identify the shape of the vehicle, and it is not yet possible to fully recognize the vehicle. This kind of technology belongs to the ¡°post-knowing¡± technology, that is, the sensor can only sense the model after the top brush starts running and touches the car body, and then the brush running track can be adjusted, and the model cannot be judged in advance. Since the model information mainly relies on the top brush induction, if the bristles wear more seriously, the vehicle model will be inaccurately sensed. Due to backward technology and many security issues, this technology was quickly eliminated in Japan. At present, some small domestic manufacturers with weak technical strength are still adopting this technology.
The second generation is the current sensor detection technology. The second generation of car washing machine can realize the automatic washing in the true sense, but there are also many defects. For example, because the current is used to control the movement of the brush, the voltage instability becomes the induction. A major threat to accuracy. The 2nd generation car washing machine has used a small number of sensors, but these sensors can only determine the location where the vehicle is parked, the total length of the vehicle, etc., and do not have the car exterior recognition function. Most of the car washing machines that are seen in the domestic market now belong to the second generation of car washing machines. Although no manual operation is required, the staff still needs to monitor them to avoid accidents.
The 3rd generation is the ultrasonic sensor sensing technology. Unlike the previous two generations, the three-generation unmanned automatic car washing machine has a unique approach in vehicle identification technology to identify the vehicle through ultrasonic induction reflection. This technology can pre-position the model and stipulate the running trajectory of the top brush before the top brush starts working, and achieve the purpose of knowing the model by the prophet, and make up for the defects of the first two generations of technology. In terms of vehicle identification, the three generations of technology are also much higher than the previous two generations. However, it should be pointed out that there are still deficiencies in ultrasonic recognition technology. If the sound wave is transmitted and received, it is easily interfered by external environment such as water vapor, dust, electromagnetic source, etc., and the ultrasonic wave easily penetrates the windshield glass and cannot be received, resulting in misjudgment.
Automatic computer washing machine
Four generations and five generations of vehicle identification technology, four generations of vehicle identification technology using photoelectric sensing recognition technology, and the use of CPU instead of PLC for information processing, faster computing, more accurate identification. The photoelectric sensor can determine the height of different parts of the body and the position of various equipment before the brush touches the body. Then, after calculation, the movement track of the brush is pre-defined, and the car is safely and quickly washed. The five generations of technology are basically the same as the four generations. They use grating or photoelectric sensing technology. There are two main differences: the five generations increase the number of sensors and make the positioning more accurate. The five generations of technology use multiple identifications. Means, such as ultrasonic technology and integrated application of photoelectric sensing technology. The four-generation and five-generation technologies are currently in mainstream technology in Japan, and the unmanned automatic car washing machines produced by most Japanese manufacturers currently use the fourth-generation or fifth-generation model identification technology.
Six-generation CCD scanning detection technology, which was successfully developed by Japanese car washing machine manufacturers and has not yet been applied on a large scale.
There are many cars in China's auto market, and the models are very diverse. This requires an unmanned automatic car wash machine to be able to accurately identify a variety of complex models. Otherwise, the car washing machine will have safety hazards. Therefore, when choosing and buying a car washing machine, the majority of car wash operators must choose an unmanned automatic car washing machine with advanced technology and ability to accurately identify various models.