With the smart home, garbage bins as a necessity of every household also need innovation. In order to solve the problems of hair, dust and food residue left on the ground around the garbage bin, a multi-functional garbage bin is designed, which integrates “intelligent garbage bin vacuum cleaner”. The system has the functions of induction dust collection, intelligent open cover, dust full reminder and night light. Market research results show that people pay close attention to the cleaning of debris such as hair, dust and other debris left near the garbage bin when dumping garbage, while traditional cleaning tools with the highest frequency of use in life are difficult to solve this problem. Considering the shortcomings of the market cleaning robot, such as high price, the above situation is reflected. This paper designs a new type of multi-functional garbage bin for household use. The bottom of the product has a vacuum outlet.
The nearby sensor senses the cleaning tool in front of it and automatically opens the vacuum function. After the filter device, dust, hair and food residue are stored in the dust collecting box. In addition, the product also has the functions of intelligent opening, dust warning and night light. The system can bring users a new experience while improving the cleaning efficiency. UPS power supply is used to supply power for each module.
When the hand is close to the induction area of the garbage bin, the infrared induction module located above the lid transmits signals to the microcontroller, and then sends commands to the deceleration motor by the microcontroller, which drives the motor to complete the automatic opening and closing action. The realization of the vacuum function depends on the infrared barrier avoidance module located near the suction port.
After sensing the obstacle signal of the sweeping tool in front, the signal is transmitted to the microcontroller, and the display screen shows “Open the Vacuum! “Word, at the same time, the microcontroller sends commands to the relay module. After the circuit is closed, the motor drive module drives the vacuum cleaner to work. After the filter device, the dirt, hair, food residue and other hard-to-clean objects are centralized in the dust collector. The inner wall of the dust collector is equipped with a film pressure sensor, which collects pressure information and then hands it to the micro-control. The device can then accurately judge the accumulation of debris in the dust collecting box and give users a warning when the weight exceeds a certain value. When the infrared obstacle avoidance module near the suction port detects the forward obstacle signal, the OUT port of the module continuously outputs the low level signal. After the signal is transmitted to the microcontroller, the common end of the single relay is turned on with the normal start, and the L289N drives the vacuum suction fan to work. After the current obstacle signal disappears, the OUT port restores to the high level and sucks. The dust blower stopped running, and a dust collection work was completed.
The product chooses a computer control chip with infrared detection to detect the garbage signal. The motor used to complete the opening action is the DC deceleration motor. The speed and steering of the DC motor are determined according to the duty cycle of the PWM control signal. After the garbage throwing signal is detected in the infrared induction zone, the microcontroller gives the positive rotation instruction to drive the direct current deceleration motor to turn forward, and completes the opening action under the mechanical linkage device. When the signal in the induction zone disappears, the microcontroller delays to give the reverse instruction to complete the closing action. Thin film pressure sensor is equivalent to varistor in the circuit. When the pressure sensor has no external load, the circuit is in a high resistance state. When the external pressure is applied to the sensor, the resistance of the circuit decreases, and the pressure is inversely proportional to the resistance. When the pressure sensor is not under pressure or the pressure is less than the starting pressure, the DO port outputs a high level.
When the pressure exceeds the set threshold, thermostatic element the module D0 outputs a low level. The sensor is connected to the corresponding pressure-voltage circuit. The digital output D0 port can be directly connected with the microcontroller by detecting the level. The level judges the weight of clutter accumulation in dust collecting box, and then realizes the function of full reminder with voice module. This function plays the role of intelligent lighting at night. HC-SR501 has the function of infrared induction of human body. When people enter the induction range, they output high level. When people leave the induction range, they automatically delay and output low level. The module is used with a photosensitive sensor to make it not sensitive during the day or when the light is strong.
The product chooses the repeatable trigger mode of the module, that is, if the human body continues to move in its induction range after the induction output is high, its output will remain high. The new multi-functional garbage bin introduced in this paper combines with the traditional ground cleaning method and has the function of automatic absorption of fine particles of garbage. Besides, it also has the functions of intelligent open cover and full reminder. The design expands the functions of the existing intelligent garbage bin, which meets the acceptance level of domestic people for intelligent household products, and is expected to be good. Good market prospects.