Intelligent garbage can with automatic door opening and closing function and door opening and closing control method

Abstract

The application provides an intelligent garbage can with automatic door opening and closing and a door opening and closing control method. The intelligent garbage can comprises a box body, a control assembly and an execution assembly. The box body is provided with a box door. An arc-shaped connecting piece is fixed to the inner wall of each box door. The end of the arc-shaped connecting piece is provided with a roller. The execution assembly comprises an electric push rod. The control assembly comprises an induction probe, a normally open switch and a double-output power-off delay relay. The induction probe and the normally open switch are signal connected. The normally open switch is connected with the input end of the double-output power-off delay relay. The output end of the double-output power-off delay relay is connected with the motor of the electric push rod. When it is not raining, the induction probe senses the approach or departure of a human body to the garbage can. The double-output power-off delay relay controls the execution assembly to make corresponding actions to open or close the box door. When it is raining, a human manually presses a manual switch button. The double-output power-off delay relay controls the execution assembly to make corresponding actions to open or close the box door.

Description

Technical Field

[0001] This invention belongs to the field of trash can technology, specifically relating to an intelligent trash can with an automatic door opening and closing mechanism and its control method. Background Technology

[0002] A trash can is a container specifically designed for holding garbage and waste. They are ubiquitous, and people place many trash cans both indoors and outdoors to dispose of their trash. Currently, trash cans on the market are mainly divided into the following types: One type is the open-top trash can, which only has an opening and no door. While convenient, the exposed garbage allows odors and insects to spread, making it neither aesthetically pleasing nor hygienic. Another type is the hinged-top trash can, which has a door. While this allows the garbage to be hidden inside, keeping the surrounding environment clean, people must manually open the lid to dispose of the garbage, increasing the risk of contact with germs and illnesses. The third type is the foot-operated open-top trash can. This type avoids direct contact with the garbage, preventing contact with germs. However, these foot-operated trash cans are generally small, with a small and light lid that requires a foot to open easily. Foot-operated opening mechanisms are not suitable for trash cans with heavier lids or larger volumes.

[0003] With the development of technology, sensor-operated trash cans have gradually appeared on the market in recent years. These trash cans are controlled by circuit chips and consist of an infrared detection device and a mechatronic drive system. As soon as a person approaches the sensing area, the lid automatically opens; a few seconds after the person leaves the sensing area, the lid automatically closes. This type of trash can uses a sensor-operated flip-top design, which is flexible and convenient, allowing for easy and hygienic disposal of trash without manual intervention or foot pedals, avoiding contact infection. The invention patent "A Smart Environmentally Friendly Trash Can" with application number 201710488533.2 converts solar energy into electrical energy using a solar panel, and then uses a photovoltaic charging controller to regulate and charge a battery. When a person approaches the infrared sensor at the front of the can, the infrared sensor transmits a signal to a servo motor. The servo motor rotates counterclockwise, driving the automatic shaft to rotate and causing the automatic trash door to move clockwise, opening the automatic trash door. When the person leaves the front of the can, the servo motor returns to its initial state, and the automatic trash door moves counterclockwise back to the closed state. However, this patent still has shortcomings. Specifically, on rainy days, the infrared sensor is prone to malfunction, the servo motor cannot work, the garbage door cannot be opened, and the garbage bin becomes unusable. Furthermore, a malfunction in any component of the control system will prevent the garbage bin door from opening. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent trash can with an automatic door opening and closing mechanism and its control method, which can automatically open and close the trash can door in any weather, and can still open the door to dispose of trash even if some parts are damaged.

[0005] To achieve the above objectives, the present invention employs the following technical solutions.

[0006] An intelligent trash can with automatic opening and closing doors includes a body, a control assembly, and an execution assembly; the body is provided with one or more doors, each door has an arc-shaped connector fixed on its inner wall, and a roller is provided at the end of the arc-shaped connector; the execution assembly includes an electric push rod corresponding to each door, the electric push rod includes a motor and a telescopic rod, and a disc is provided at the end of each telescopic rod that is in close contact with the roller;

[0007] The control assembly includes an automatic sensor-activated door opening unit corresponding to each cabinet door;

[0008] Each automatic sensor door opening unit includes a sensor probe, a normally open switch, and a dual-output power-off delay relay. The sensor probe and the normally open switch are connected by a signal. When a person approaches the sensing area of ​​the sensor probe, the normally open switch closes. One end of the normally open switch is connected to the power supply, and the other end is connected to the input wire of the dual-output power-off delay relay. The output terminal of the dual-output power-off delay relay is connected to the motor wire.

[0009] In the aforementioned intelligent trash can with automatic door opening and closing, the dual-output power-off delay relay includes a positive power terminal, a ground terminal, a signal input terminal, a delay module, and a double-pole double-throw relay; the double-pole double-throw relay includes a first set of output terminals and a second set of output terminals; the first set of output terminals includes a first normally open contact, a first common contact terminal, and a first normally closed contact; the second set of output terminals includes a second normally open contact, a second common contact terminal, and a second normally closed contact; the other end of the normally open switch is connected to the signal input terminal wire of the dual-output power-off delay relay; the first common contact terminal is connected to the positive terminal wire of the motor, and the second common contact terminal is connected to the negative terminal wire of the motor.

[0010] In the aforementioned intelligent trash can with automatic door opening and closing, the control assembly further includes a raindrop sensing unit; the raindrop sensing unit includes a raindrop sensor, a raindrop control relay, and a manual switch button corresponding to each door; the raindrop control relay includes a relay coil and a normally closed contact corresponding to each door.

[0011] The normally closed contact is connected in series with the normally open switch, and the series circuit is connected in parallel with the manual switch button; one end of the normally open switch is connected to the power supply wire through the normally closed contact; one end of the manual switch button is connected to the power supply wire, and the other end of the manual switch button is connected to the signal input terminal of the dual-output power-off delay relay through a wire.

[0012] The relay coil and the rain sensor are connected in series between the power supply and ground.

[0013] In the aforementioned intelligent trash can with automatic door opening and closing, the raindrop sensor includes a metal box, a positive electrode, and a negative electrode (28); the positive electrode and the negative electrode are set inside the metal box; one end of the positive electrode is connected to the relay coil wire, and one end of the negative electrode is connected to the metal box wire and grounded; a gap is left between the positive electrode and the negative electrode.

[0014] In the aforementioned intelligent trash can with automatic door opening and closing, the control assembly is powered by a solar power system; the solar power system includes a solar panel, a solar controller, and a battery; the solar panel is connected to the solar controller by wires, and the battery is connected to the solar controller by wires.

[0015] In the aforementioned intelligent trash can with automatic door opening and closing, the output terminal of the double-pole double-throw time-delay relay is also connected to the horn driver, the horn driver is connected to the positive terminal of the loudspeaker, and the negative terminal of the loudspeaker is grounded.

[0016] In the aforementioned intelligent trash can with automatic door opening and closing, a rectifier diode is installed between the output terminal of the double-pole double-throw time-delay relay and the horn driver.

[0017] A method for controlling the opening and closing of a smart trash can includes the following steps:

[0018] [1] When it is not raining, when a person approaches the trash can, the sensor detects the signal and the door opens to allow the trash to be thrown away; when the person leaves the trash can, the sensor detects the signal and the door closes after a delay.

[0019] [2] When it rains, the sensor is shielded. When a person presses the manual switch button, the bin door opens for throwing away garbage. After pressing, the bin door closes after a delay.

[0020] In the above-mentioned intelligent trash can door opening and closing control method, the specific method of step [1] is as follows:

[0021] When it's not raining, the positive and negative electrodes of the rain sensor are disconnected, the relay coil is not energized, the normally closed contact is closed, and the normally open switch is connected to 12V DC voltage through the normally closed contact. When a person approaches the trash can, the sensor detects a signal, the corresponding normally open switch closes, and the signal input terminal of the corresponding dual-output power-off delay relay receives a 12V high level. The double-pole double-throw relay operates: the common terminal of the first contact connects with the first normally open contact, and the common terminal of the second contact connects with the second normally open contact. The dual-output power-off delay relay outputs a positive 12V voltage to the motor, causing the motor to work and rotate forward, extending the telescopic rod. The disc at the end of the telescopic rod pushes against the roller, pushing the door open. The bin is open for people to throw away trash. When a person leaves the bin, the sensor signal disappears, the corresponding normally open switch opens, and the corresponding dual-output power-off delay relay receives no 12V high-level input. However, during the delay period, the double-pole double-throw relay remains in its original state, and the bin door remains open. After the delay period, the double-pole double-throw relay switches its action: the common terminal of the first contact connects with the first normally closed contact, and the common terminal of the second contact connects with the second normally closed contact. The dual-output power-off delay relay outputs a reverse 12V voltage to the motor, causing the motor to rotate in the opposite direction, the telescopic rod to retract, and the bin door to close. After the telescopic rod is fully retracted, the limit switch inside the motor activates to cut off the power supply, and the motor stops working.

[0022] In the above-mentioned intelligent trash can door opening and closing control method, the specific method of step [2] is as follows:

[0023] When it rains, rainwater drips into the metal box. When the rainwater simultaneously contacts both the positive and negative electrodes, the raindrop sensor conducts, energizing the relay coil and opening the normally closed contact, thus shielding all the sensing probes. The manual switch button is connected to a 12V DC voltage. To dispose of garbage, a person presses the manual switch button, closing it. This sends a 12V high-level signal to the corresponding dual-output power-off delay relay, activating the double-pole double-throw relay: the first common contact connects to the first normally open contact, and the second common contact connects to the second normally open contact. The dual-output power-off delay relay outputs a positive 12V voltage to the motor, causing the motor to operate and rotate forward, extending the telescopic rod. The disc at the end of the telescopic rod... Using the rollers, the door is pushed out, opening for people to throw away trash. After pressing, the manual switch button springs back and disconnects, resulting in no 12V high-level input to the corresponding dual-output power-off delay relay. However, during the delay period, the double-pole double-throw relay remains in its original state, and the door remains open. After the delay period, the double-pole double-throw relay switches its action: the common terminal of the first contact connects with the first normally closed contact, and the common terminal of the second contact connects with the second normally closed contact. The dual-output power-off delay relay outputs a reverse 12V voltage to the motor, causing the motor to rotate in the opposite direction, the telescopic rod retracts, and the door closes. After the telescopic rod is fully retracted, the limit switch inside the motor activates, cutting off the power supply and stopping the motor.

[0024] The beneficial effects of this invention are as follows:

[0025] 1. This invention enables intelligent control of the trash can's door opening and closing under different weather conditions. When it's not raining, the sensor detects a person approaching or leaving the trash can, and the dual-output power-off delay relay controls the execution assembly to automatically open or close the trash can door. Throughout the trash disposal process, people do not need to touch the trash can, avoiding contact with germs. Simultaneously, a raindrop sensor unit is added to the control assembly. When the raindrop sensor detects rainwater, the raindrop sensor unit is energized, shielding the sensor probe and preventing it from mistakenly triggering the opening of the disposal door and causing water to enter the trash can. When it rains, if trash needs to be disposed of, the person manually presses the manual switch button, and the dual-output power-off delay relay also controls the execution assembly to automatically open or close the door.

[0026] 2. Each door of this invention has an independent electric push rod, switch button and automatic sensor door opening unit. The control assembly of the garbage bin can control the automatic opening or closing of each door individually, which makes it convenient for the user to dispose of garbage from different positions and directions. It also serves as a functional backup, so that even if one door fails, it will not affect the use and improve the reliability of the product.

[0027] 3. This invention adds a manual door handle to the bin door. Even if any system, such as the solar power system, control assembly, or execution assembly, malfunctions, a person can simply open the bin door to dispose of garbage without affecting the normal use of the garbage bin.

[0028] 4. This invention uses a solar power system to power the control mechanism and circuitry, which is energy-saving and environmentally friendly while facilitating on-site installation. In addition, a loudspeaker is added to the product to remind and guide waste disposal users, providing a superior user experience. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the intelligent trash can of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the present invention when the assembly pushes out the garbage bin door;

[0031] Figure 3 This is a schematic diagram of the structure of the execution assembly of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the electric actuator of the present invention;

[0033] Figure 5 This is a circuit diagram of the control assembly and solar power supply system of the present invention;

[0034] Figure 6 This is a schematic diagram of the dual-output power-off delay relay of the present invention;

[0035] Figure 7 This is a schematic diagram of the structure of the raindrop sensor of the present invention;

[0036] Figure 8 This is an external view of the control box of the present invention;

[0037] Figure 9 This is a schematic diagram of the internal structure of the control box of the present invention;

[0038] Figure 10 This is a schematic diagram of the intelligent trash can door of the present invention when closed;

[0039] Figure 11 This is a schematic diagram of the structure where the inventor manually opens the box door.

[0040] In the diagram: 1. Cabinet; 2. Control assembly; 3. Door; 4. Arc-shaped connector; 5. Roller; 6. Automatic sensor door opening unit; 7. Electric push rod; 8. Disc; 9. Motor; 10. Telescopic rod; 11. Sensor probe; 12. Normally open switch; 13. Dual-output power-off delay relay; 14. Normally closed contact; 15. Manual switch button; 16. Relay coil; 17. Raindrop sensor; 18. Fuse; 19. Solar panel; 20. Solar controller; 21. Battery; 22. Solar power supply system; 23. Main power switch; 24. Speaker driver; 25. Speaker; 26. Metal box; 27. Positive electrode; 28. Negative electrode; 29. ​​Control box; 30. Rectifier diode; 31. Raindrop inlet hole; 32. Drain hole; 33. Actuator box; 34. Double-pole double-throw relay; 35. Delay module; 36. Raindrop control relay. Detailed Implementation

[0041] The present invention provides an intelligent trash can with automatic opening and closing doors, including a body 1, a control assembly 2, an execution assembly, a solar power supply system 22, and a control box 29.

[0042] like Figure 1 and Figure 2 As shown, the box body 1 is provided with one or more boxes 3, and each box 3 has an arc-shaped connector 4 fixed on its inner wall, with a roller 5 at the end of the arc-shaped connector 4.

[0043] like Figure 2 As shown, the actuation assembly includes an electric push rod 7 corresponding to each door 3 and an actuation box 33. Figure 4 As shown, the electric linear actuator 7 includes a motor 9 and a telescopic rod 10. The electric linear actuator 7 is an electrically driven device that converts the rotary motion of the motor 9 into the linear reciprocating motion of the telescopic rod 10. The electric linear actuator 7 is a commercially available, mature product that can be purchased directly from the market. Figure 2 and Figure 3 As shown, each telescopic rod 10 has a disc 8 at its end. The motor 9 of the electric push rod 7 is located inside the execution box 33. The telescopic rod 10 passes through the execution box 33, and the disc 8 at the end of the telescopic rod 10 is located outside the execution box 33. The execution box 33 is located inside the box 1 and fixed to the inner wall of the box 1.

[0044] like Figure 5 As shown, the control assembly 2 includes an automatic sensor door opening unit 6 corresponding to each door 3, a raindrop sensor unit, and a main power switch 23.

[0045] like Figure 5 As shown, each automatic sensor door opening unit 6 includes a sensor probe 11, a normally open switch 12, and a dual-output power-off delay relay 13. The sensor probe 11 and the normally open switch 12 are connected by signals.

[0046] like Figure 6 As shown, the dual-output power-off delay relay 13 includes a positive power supply terminal V+, a ground terminal GND, a signal input terminal IN, a delay module 35, and a double-pole double-throw relay 34. The positive power supply terminal V+ of the dual-output power-off delay relay 13 is directly connected to the power supply. The double-pole double-throw relay 34 includes a first set of output terminals and a second set of output terminals; the first set of output terminals includes a first normally open contact NO1, a first contact common terminal COM1, and a first normally closed contact NC1; the second set of output terminals includes a second normally open contact NO2, a second contact common terminal COM2, and a second normally closed contact NC2. The dual-output power-off delay relay 13 is a product purchased directly from the market, with the product model number QF-RD21N2. This dual-output power-off delay relay 13 has a delayed disconnection function.

[0047] like Figure 5 As shown, the raindrop sensing unit includes a raindrop sensor 17, a raindrop control relay 36, and a manual switch button 15 corresponding to each door 3. The raindrop control relay 36 includes a relay coil 16 and a normally closed contact 14 corresponding to each door 3. The normally closed contact 14 is connected in series with a normally open switch 12, and this series circuit is connected in parallel with the manual switch button 15. One end of the normally open switch 12 is connected to a power supply wire through the normally closed contact 14, and one end of the manual switch button 15 is connected to a power supply wire.

[0048] The other end of the normally open switch 12 or the other end of the manual switch button 15 is connected to the signal input terminal IN of the dual-output power-off delay relay 13 via a wire. For example... Figure 6 As shown, the first common contact terminal COM1 of the dual-output power-off delay relay 13 is connected to the positive terminal wire of the motor 9, and the second common contact terminal COM2 is connected to the negative terminal wire of the motor 9. A fuse 18 is provided between the first common contact terminal COM1 of the dual-output power-off delay relay 13 and the motor 9.

[0049] The relay coil 16 and the rain sensor 17 are connected in series between the power supply and ground.

[0050] like Figure 7As shown, the raindrop sensor 17 includes a metal housing 26, a positive electrode 27, and a negative electrode 28. The positive electrode 27 and negative electrode 28 are disposed inside the metal housing 26; one end of the positive electrode 27 is connected to the wire of the relay coil 16, and one end of the negative electrode 28 is connected to the wire of the metal housing 26 and grounded; an air gap is provided between the positive electrode 27 and the negative electrode 28. A raindrop inlet hole 31 is provided at the upper end of the metal housing 26, and a drain hole 32 is provided at the lower end of the metal housing 26. The air gap between the positive electrode 27 and the negative electrode 28 of the raindrop sensor 17 keeps it in an open state when there are no water droplets; when it rains, rainwater simultaneously contacts both the positive electrode 27 and the negative electrode 28. The conductivity of the water connects the positive electrode 27 and the negative electrode 28, allowing current to flow, thus putting the raindrop sensor 17 into a conductive state.

[0051] like Figure 5 As shown, the common terminal COM1 of the first contact of all dual-output power-off delay relays 13 is also connected to the speaker driver 24. The speaker driver 24 is connected to the positive terminal of the loudspeaker 25, and the negative terminal of the loudspeaker 25 is grounded. A rectifier diode 30 is provided between the common terminal COM1 of the first contact of the dual-output power-off delay relays 13 and the speaker driver 24. The speaker driver 24 is a commercially available mature product that can record prompts such as "Please press the manual button in rainy weather," "The door is open, please dispose of garbage," and "Thank you for your cooperation" to remind people.

[0052] like Figure 5 As shown, the solar power supply system 22 supplies power to the control assembly 2; the solar power supply system 22 includes a solar panel 19, a solar controller 20 and a battery 21; the solar panel 19 is connected to the solar controller 20 by wires, and the battery 21 is connected to the solar controller 20 by wires.

[0053] like Figure 1 As shown, the control box 29 is located outside the housing 1 and fixed to the top of the housing 1. Figure 9 As shown, the solar controller 20, battery 21, all dual-output power-off delay relays 13, all normally open switches 12, all fuses 18, all rectifier diodes 30, horn driver 24, loudspeaker 25, and raindrop control relay 36 are all located inside the control box 29. The main power switch 23, all sensor probes 11, all manual switch buttons 15, and raindrop sensor 17 are located on the side wall of the control box 29. Figure 8 As shown, the solar panel 19 is mounted on top of the control box 29.

[0054] The method for automatically opening and closing the smart trash can door according to the present invention is as follows:

[0055] When there is ample sunlight, solar panel 19 collects sunlight and converts it into electrical energy. This electrical energy is then supplied to control assembly 2 via solar controller 20, providing it with a 12V DC voltage. Solar controller 20 can also charge battery 21, storing electrical energy in it. Even on days without sunlight, battery 21 can still supply power to control assembly 2 via solar controller 20. Solar controller 20 can monitor the operating status of solar panel 19 in real time, adjust the power output, and protect the circuitry of control assembly 2. Solar controller 20 is a mature product on the market and can be purchased directly.

[0056] The positive terminal V+ of the dual-output power-off delay relay 13 is connected to a 12V DC voltage (provided by the solar power system 22), and the delay module 35 is preset with a delay disconnection time.

[0057] When it is not raining, the positive electrode 27 and negative electrode 28 of the raindrop sensor 17 are in the open state, the relay coil 16 is not energized, the normally closed contact 14 is in the closed state, and the normally open switch 12 is connected to a 12V DC voltage (provided by the solar power system 22) through the normally closed contact 14. When a person approaches the trash can, the sensor probe 11 senses the signal, the corresponding normally open switch 12 closes, and the signal input terminal IN of the corresponding dual-output power-off delay relay 13 receives a 12V high level. The double-pole double-throw relay 34 operates: the first contact common terminal COM1 connects with the first normally open contact NO1, and the second contact common terminal COM2 connects with the second normally open contact NO2; the dual-output power-off delay relay 13 outputs a positive 12V voltage to the motor 9, the corresponding motor 9 works and rotates in the forward direction, extending the telescopic rod 10. The disc 8 at the end of the telescopic rod 10 pushes against the roller 5, pushing out the bin door 3, opening the bin door 3 for people to throw away trash. Figure 2 As shown. When a person leaves the trash can, the sensor 11 detects the disappearance of the signal, the corresponding normally open switch 12 opens, and the signal input terminal IN of the corresponding dual-output power-off delay relay 13 has no 12V high-level input. However, during the delay period, the double-pole double-throw relay 34 remains in its original state, and the door 3 remains open. After the delay period ends, the double-pole double-throw relay 34 switches its action: the first contact common terminal COM1 connects with the first normally closed contact NC1, and the second contact common terminal COM2 connects with the second normally closed contact NC2; the dual-output power-off delay relay 13 outputs a reverse 12V voltage to the motor 9, the corresponding motor 9 rotates in the reverse direction, the telescopic rod 10 retracts, and the door 3 closes. Figure 10 As shown. After the telescopic rod 10 is fully retracted, the limit switch inside the motor 9 activates to cut off the power supply, and the motor 9 stops working.

[0058] When it rains, the battery 21 supplies power to the control assembly 2 via the solar controller 20. Rainwater drips into the metal box 26 through the raindrop inlet 31. When rainwater simultaneously contacts the positive electrode 27 and the negative electrode 28, the conductivity of water connects the positive electrode 27 and the negative electrode 28, allowing current to flow. The raindrop sensor 17 conducts, applying voltage to the relay coil 16. All normally closed contacts 14 open, thus shielding all sensing probes 11 and rendering them unusable. The normally open switch 12 remains open. If the sensing probes are not shielded, rainwater dripping onto them will generate a signal, causing the dual-output power-off delay relay to open the box door. With the door open for an extended period, a large amount of rainwater will flood the trash can. To prevent this, a raindrop sensing unit is incorporated into the control assembly. When the raindrop sensor detects rainwater, the raindrop sensing unit is energized, shielding all sensing probes. The manual switch button 15 is connected to a 12V DC voltage (provided by the solar power system 22). When garbage needs to be disposed of, the person presses the manual switch button 15, closing it. This causes the corresponding dual-output power-off delay relay 13 to receive a 12V high-level signal at its input terminal IN, activating the double-pole double-throw relay 34: the first common contact COM1 connects to the first normally open contact NO1, and the second common contact COM2 connects to the second normally open contact NO2. The dual-output power-off delay relay 13 outputs a positive 12V voltage to the motor 9, causing the motor 9 to operate and rotate forward, extending the telescopic rod 10. The disc 8 at the end of the telescopic rod 10 pushes against the roller 5, opening the bin door 3 for garbage disposal. Figure 2 As shown. After pressing, the manual switch button 15 rebounds and disconnects. The corresponding dual-output power-off delay relay 13's signal input terminal IN has no 12V high-level input. However, during the delay period, the double-pole double-throw relay 34 remains in its original state, and the door 3 remains open. After the delay period, the double-pole double-throw relay 34 switches its action: the first contact common terminal COM1 connects with the first normally closed contact NC1, and the second contact common terminal COM2 connects with the second normally closed contact NC2; the dual-output power-off delay relay 13 outputs a reverse 12V voltage to the motor 9, causing the motor 9 to rotate in the opposite direction, the telescopic rod 10 retracts, and the door 3 closes. Figure 10 As shown. After the telescopic rod 10 is fully retracted, the limit switch inside the motor 9 activates to cut off the power supply, and the motor 9 stops working.

[0059] like Figure 11 As shown, if any system in the solar power system 22, control assembly 2, or execution assembly malfunctions and becomes unusable, a person can simply open the bin door 3 by hand to dispose of garbage without affecting the normal use of the garbage bin.

Claims

1. An intelligent trash can with an automatic opening and closing door, characterized in that: The system includes a housing (1), a control assembly (2), and an execution assembly. The housing (1) is provided with one or more doors (3), and each door (3) has an arc-shaped connector (4) fixed on its inner wall. The end of the arc-shaped connector (4) is provided with a roller (5). The execution assembly includes an electric push rod (7) corresponding to each door (3). The electric push rod (7) includes a motor (9) and a telescopic rod (10). The end of each telescopic rod (10) is provided with a disc (8) that is close to the roller (5). The control assembly (2) includes an automatic sensing door opening unit (6) corresponding to each door (3). Each automatic sensor door opening unit (6) includes a sensor probe (11), a normally open switch (12), and a dual-output power-off delay relay (13); the sensor probe (11) and the normally open switch (12) are connected by a signal. When a human body approaches the sensing area of ​​the sensor probe (11), the normally open switch (12) closes; one end of the normally open switch (12) is connected to the power supply, and the other end is connected to the input wire of the dual-output power-off delay relay (13); the output end of the dual-output power-off delay relay (13) is connected to the motor (9) wire; The dual-output power-off delay relay (13) includes a power supply positive terminal (V+), a ground terminal (GND), a signal input terminal (IN), a delay module (35), and a double-pole double-throw relay (34); the double-pole double-throw relay (34) includes a first set of output terminals and a second set of output terminals; the first set of output terminals includes a first normally open contact (NO1), a first common contact terminal (COM1), and a first normally closed contact (NC1); the second set of output terminals includes a second normally open contact (NO2), a second common contact terminal (COM2), and a second normally closed contact (NC2); the other end of the normally open switch (12) is connected to the signal input terminal (IN) wire of the dual-output power-off delay relay (13); the first common contact terminal (COM1) is connected to the positive terminal wire of the motor (9), and the second common contact terminal (COM2) is connected to the negative terminal wire of the motor (9); The control assembly (2) further includes a raindrop sensing unit; the raindrop sensing unit includes a raindrop sensor (17), a raindrop control relay (36) and a manual switch button (15) corresponding to each door (3); the raindrop control relay (36) includes a relay coil (16) and a normally closed contact (14) corresponding to each door (3). The normally closed contact (14) is connected in series with the normally open switch (12), and the series circuit is connected in parallel with the manual switch button (15); one end of the normally open switch (12) is connected to the power supply wire through the normally closed contact (14); one end of the manual switch button (15) is connected to the power supply wire, and the other end of the manual switch button (15) is connected to the signal input terminal (IN) of the dual-output power-off delay relay (13) through a wire; The relay coil (16) and the rain sensor (17) are connected in series between the power supply and ground.

2. The intelligent trash can with automatic door opening and closing as described in claim 1, characterized in that: The raindrop sensor (17) includes a metal box (26), a positive electrode (27), and a negative electrode (28); the positive electrode (27) and the negative electrode (28) are disposed inside the metal box (26); one end of the positive electrode (27) is connected to the wire of the relay coil (16), and one end of the negative electrode (28) is connected to the wire of the metal box (26) and grounded; a gap is left between the positive electrode (27) and the negative electrode (28).

3. The intelligent trash can with automatic door opening and closing as described in claim 2, characterized in that: The control assembly (2) is powered by a solar power system (22); the solar power system (22) includes a solar panel (19), a solar controller (20) and a battery (21); the solar panel (19) is connected to the solar controller (20) by wires, and the battery (21) is connected to the solar controller (20) by wires.

4. The intelligent trash can with automatic door opening and closing as described in claim 2, characterized in that: The output of the double-pole double-throw time delay relay (13) is also connected to the speaker driver (24), the speaker driver (24) is connected to the positive terminal of the loudspeaker (25), and the negative terminal of the loudspeaker (25) is grounded.

5. The intelligent trash can with automatic door opening and closing as described in claim 4, characterized in that: A rectifier diode (30) is provided between the output terminal of the double-pole double-throw delay relay (13) and the horn driver (24).

6. A door opening and closing control method for the intelligent trash can with automatic door opening and closing as described in claim 2, characterized in that, Includes the following steps: [1] When it is not raining, when a person approaches the trash can, the sensor detects the signal and the door opens to allow the trash to be thrown away; when the person leaves the trash can, the sensor detects the signal and the door closes after a delay. [2] When it rains, the sensor is shielded. When a person presses the manual switch button, the bin door opens for throwing away garbage. After pressing, the bin door closes after a delay.

7. The opening and closing control method for the intelligent trash can with automatic opening and closing door according to claim 6, characterized in that, The specific method for step [1] is as follows: When it is not raining, the positive electrode (27) and negative electrode (28) of the raindrop sensor (17) are in the open state, the relay coil (16) is not energized, the normally closed contact (14) is in the closed state, and the normally open switch (12) is connected to a 12V DC voltage through the normally closed contact (14); when a person approaches the trash can, the sensor probe (11) senses the signal, the corresponding normally open switch (12) closes, and the signal input terminal (IN) of the corresponding dual-output power-off delay relay (13) is activated. 12V high level, double-pole double-throw relay (34) operates: the first contact common terminal (COM1) is connected to the first normally open contact (NO1), and the second contact common terminal (COM2) is connected to the second normally open contact (NO2); the dual-output power-off delay relay (13) outputs a positive 12V voltage to the motor (9), the corresponding motor (9) works and rotates in the forward direction, extending the telescopic rod (10), the disc (8) at the end of the telescopic rod (10) pushes against the roller (5), and the box door is opened. (3) Push out, the box door (3) opens for people to throw away garbage; when people leave the garbage box, the sensing signal of the sensing probe (11) disappears, the corresponding normally open switch (12) is disconnected, and the signal input terminal (IN) of the corresponding double-output power-off delay relay (13) has no 12V high-level input, but during the delay time, the double-pole double-throw relay (34) still maintains the original state, and the box door (3) is still in the open state; after the delay time ends, the double-pole double-throw relay (34) switches its action: the first contact common terminal (COM1) is connected to the first normally closed contact (NC1), and the second contact common terminal (COM2) is connected to the second normally closed contact (NC2); the double-output power-off delay relay (13) outputs a reverse 12V voltage to the motor (9), the corresponding motor (9) rotates in the opposite direction, the telescopic rod (10) retracts, and the box door (3) closes; after the telescopic rod (10) is fully retracted, the limit switch inside the motor (9) cuts off the power supply, and the motor (9) stops working.

8. The opening and closing control method for the intelligent trash can with automatic opening and closing door according to claim 7, characterized in that, The specific method for step [2] is as follows: When it rains, rainwater drips into the metal box (26). When the rainwater simultaneously contacts the positive electrode (27) and the negative electrode (28), the raindrop sensor (17) is activated, the relay coil (16) is energized, and the normally closed contact (14) is opened, thus shielding all the sensing probes (11). The manual switch button (15) is connected to a 12V DC voltage. If garbage needs to be disposed of, the person presses the manual switch button (15), the manual switch button (15) closes, and the corresponding dual-output power-off delay relay is activated. When the signal input terminal (IN) of the electrical appliance (13) receives a 12V high level, the double-pole double-throw relay (34) operates: the first contact common terminal (COM1) connects with the first normally open contact (NO1), and the second contact common terminal (COM2) connects with the second normally open contact (NO2); the dual-output power-off delay relay (13) outputs a positive 12V voltage to the motor (9), and the corresponding motor (9) works and rotates in the forward direction, extending the telescopic rod (10). The disc (8) at the end pushes against the roller (5), pushing the box door (3) out, and the box door (3) is opened for people to throw away garbage; after pressing, the manual switch button (15) bounces back and disconnects, and the corresponding double-output power-off delay relay (13) signal input terminal (IN) has no 12V high level input, but during the delay time, the double-pole double-throw relay (34) still maintains the original state, and the box door (3) is still in the open state; after the delay time ends, the double-pole double-throw relay (34) switches its action: the first contact common terminal (COM1) is connected to the first normally closed contact (NC1), and the second contact common terminal (COM2) is connected to the second normally closed contact (NC2); the double-output power-off delay relay (13) outputs a reverse 12V voltage to the motor (9), and the corresponding motor (9) rotates in the opposite direction, the telescopic rod (10) retracts, and the box door (3) closes; after the telescopic rod (10) is fully retracted, the limit switch inside the motor (9) cuts off the power supply, and the motor (9) stops working.

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