At present, there are three mainstream washing machines on the market. The first semi-automatic double-barrel washing machine is worn and knotted, which requires special care during washing. The most terrible thing is that the spin-drying bucket is small, and the leather bowl often leaks water, which causes the motor to burn out and is easy to leak electricity, but it is cheap; The second type is fully automatic pulsator, which integrates washing and bleaching. It is small in size, easy to use, does not need special care, has a variety of programs to choose from, and does not occupy space. It is strong (and knotted), saves electricity and is clean to wash, but it costs more water than a double-barrel washing machine. The third kind, Lola. Wash it clean; Wearing little clothes; Clothes are not knotted; Water consumption is slightly less than that of pulsator; Most of them have drying function; The appearance is luxurious, and it looks magnificent. However, it also has some disadvantages, such as high power consumption (about 8 kWh with drying each time) and long washing time (about 2 hours); It is inconvenient to add clothes in the process; High price; High level of resettlement; Maintenance costs are high.

In addition, an intelligent washing machine is needed now. Intelligent fuzzy control automatic washing machine can also automatically judge the water temperature, water level, clothes quality and dirty condition of clothes, and decide to put in the right amount of detergent and the best washing program. When the quantity and texture of clothes in the washing bucket are different, the total weight will be different if water is injected to make them reach the same water level. Taking advantage of this, the quality and quantity of clothes can be judged by measuring the inertia of the washing motor after low-speed rotation. The method is as follows: after a certain amount of water is injected into the washing tub, the motor runs at a low speed, and after it stabilizes, the power is cut off quickly, and the washing tub drives the motor to continue to rotate under the inertia. At this time, the motor winding generates back electromotive force, rectifies its half wave, amplifies and shapes it, and obtains a rectangular pulse sequence. By analyzing the pulse number and pulse width. You can get the quality and quantity of clothes. The dirtiness of clothes is judged by the transparency of water. An infrared photoelectric sensor is added at the drain of the washing barrel, so that the infrared light passes through the water and enters the receiving pipe on the other side. If the transparency of the water is low, the light energy obtained by the receiving tube is small, indicating that the clothes are dirty. Piezoelectric sensors are used for dehydration. When the dehydration barrel is highly rotated, the water sprayed from the dehydration barrel acts on the piezoelectric sensor, and the dehydration operation automatically stops according to this pressure change.