Intelligent garbage can

Abstract

An intelligent garbage can belongs to the technical field of garbage cans and comprises a garbage can body, a WIFI (Wireless Fidelity) positioning module and an electromagnetic valve. The device further comprises a data receiving unit, an analysis unit, a display unit, a harmful gas detection circuit, a barrel fullness detection circuit, a temperature detection circuit, a weight detection circuit, a liquid leakage detection circuit, an inclination displacement detection circuit, a water level detection circuit, a cover opening control circuit and a cover opening mechanism. The data receiving unit, the analysis unit and the display unit are application software; the WIFI positioning module, the electromagnetic valve, the harmful gas detection and full can detection, the temperature detection, the weight detection, the liquid leakage detection, the inclination displacement detection and the water level detection are installed together with the cover opening control circuit and the cover opening mechanism and the garbage can body. The upper cover can be automatically opened and closed, when the garbage can is abnormal, related managers can be prompted, water can be automatically sprayed to extinguish fire in the case of fire, a good safety effect is achieved, and the direction of the garbage can body can be provided for people who do not know the position of the garbage can in real time.

Description

Technical Field

[0001] This invention relates to the field of trash can technology, and in particular to a smart trash can. Background Technology

[0002] Trash cans are a widely used sanitation device. With the advancement of industrial technology, the functions of trash cans have become increasingly sophisticated. For example, the authorized patent in my country with patent number "202021462511.2" states that "this disclosure provides a trash can, including: a body for holding trash; a lid rotatably connected to the body, wherein the trash can opens when the lid rotates in a first direction and closes when the lid rotates in a second direction, the first and second directions being opposite directions; and a trash can ID section for storing the identification information of the trash can, the trash can ID section being disposed on the body."

[0003] As can be seen above, although the comparative patent has achieved its invention purpose to a certain extent, it still has the following technical disadvantages due to structural and functional limitations. (1) It does not have a positioning function. When used in public areas such as offices, it will cause inconvenience to relevant personnel who do not know the location of the trash can when they do not know the location of the trash can. (2) It does not have the functions of weight, full bin, harmful gas, tilt displacement, leakage, high temperature and fire warning. When the inside is full of trash, the bin is tilted or displaced, damaged and leaking, fire, or harmful gas is generated, it cannot immediately alert the relevant management personnel, which will have an adverse effect on the normal use of the trash can. (3) It does not have a fire extinguishing function. When a fire occurs, it cannot immediately extinguish the fire in the bud, and there is a chance that the fire accident will expand. Summary of the Invention

[0004] To overcome the shortcomings of existing trash cans due to structural and functional limitations, as described in the background section, this invention provides an intelligent trash can that, with the combined action of relevant mechanisms, can promptly alert relevant management personnel and automatically extinguish fires when the trash can itself is full of trash, tilted or displaced, damaged and leaking, overheating and causing a fire, generating harmful gases, or being overloaded. It also provides real-time location information for people who are unaware of the trash can's location, thus bringing convenience to users and achieving good safety.

[0005] The technical solution adopted by this invention to solve its technical problem is: The intelligent trash can includes a trash can body, a battery, a WIFI positioning module, and a solenoid valve. It also features a data receiving unit, an analysis unit, a display unit, a hazardous gas detection circuit, a full-bin detection circuit, a temperature detection circuit, a weight detection circuit, a leakage detection circuit, a tilt displacement detection circuit, a water level detection circuit, a lid opening control circuit, and a lid opening mechanism. The data receiving unit, analysis unit, and display unit are application software installed within an internet-connected device. The trash can body is equipped with a support cylinder and a top cover. The lower end of the support cylinder has a component compartment, and the top cover has a hollow structure, with its lower rear end hinged to the rear of the trash can body. The upper part of the trash can body is placed inside the support cylinder at the lower end; the opening mechanism includes an electric push rod and a fixed base. The support base is fixedly installed on the upper rear end of the trash can body, and the front part of the connecting rod at the rear end of the upper cover is rotatably installed on the side of the support base. The upper part of the movable column of the electric push rod is rotatably installed on the rear side of the connecting rod. The front side of the fixed base is fixedly installed on the lower rear outer side of the trash can body. The lower end of the cylinder of the electric push rod and the rear end of the fixed base are rotatably installed together. The rear end of the upper cover has a water inlet pipe and a sealing cap. The lower end of the upper cover's water outlet pipe is fixedly connected to one end of a solenoid valve, and the other end of the solenoid valve is fixedly connected to the water inlet of multiple fire extinguishing pipes. The lower end has multiple water outlets, and the upper cover is filled with water. The battery, WIFI positioning module, hazardous gas detection circuit, full tank detection circuit, temperature detection circuit, weight detection circuit, leakage detection circuit, tilt displacement detection circuit, water level detection circuit, and lid opening control circuit are installed in the component compartment. The power output terminal of the lid opening control circuit and the power input terminal of the electric push rod are electrically connected. The signal output terminals of the hazardous gas detection circuit, full tank detection circuit, temperature detection circuit, weight detection circuit, leakage detection circuit, and tilt displacement detection circuit are electrically connected to the multi-channel signal input terminals of the WIFI positioning module. The power output terminal of the temperature detection circuit and the power input terminal of the solenoid valve are electrically connected. The data receiving unit can receive data on the amount, location, weight, temperature, and whether the trash can is damaged, leaking, or producing harmful gases, which are wirelessly transmitted by the WIFI positioning module. The analysis unit can analyze the data input by the data receiving unit and can actively alert relevant personnel through the display unit when the trash can is full, displaced or tipped over, overweight, overheated, damaged and leaking, or producing harmful gases. The temperature detection circuit can control the solenoid valve to open and extinguish the fire inside the trash can when a fire occurs inside the trash can.

[0006] Furthermore, the hazardous gas detection circuit includes a hazardous gas detection module and a resistor that are electrically connected, with the signal output terminal of the hazardous gas detection module connected to one end of the resistor.

[0007] Furthermore, the weight detection circuit includes a weight sensor and a resistor that are electrically connected. The signal output terminal of the weight sensor is connected to one end of the resistor, and the lower end of the trash can body is in contact with the upper end of the force-bearing surface of the weight sensor.

[0008] Furthermore, the full barrel detection circuit includes a photoelectric detection switch and a resistor that are electrically connected, with the signal output terminal of the photoelectric detection switch connected to one end of the resistor.

[0009] Furthermore, the temperature detection circuit includes an electrically connected thermistor, a resistor, and a transistor; one end of the thermistor is connected to one end of the first resistor, one end of the second resistor, and one end of the third resistor; the other end of the second resistor is connected to the base of the transistor; and the other end of the first resistor is connected to the emitter of the transistor.

[0010] Furthermore, the leakage detection circuit includes a resistor connected by a wire and two metal plates. The upper ends of the two metal plates are respectively installed on the outside of the upper end of the component compartment at a distance from each other. The first metal plate is connected to one end of the resistor.

[0011] Furthermore, the tilt displacement detection circuit includes an electrically connected resistor and a mercury switch, with one end of the mercury switch connected to one end of the resistor, the mercury level of the mercury switch being vertically located at the lower end of the component compartment, and the two contacts being located at the upper end.

[0012] Furthermore, the water level detection circuit includes an electrically connected resistor, two metal plates, a light-emitting diode (LED), and a transistor. The two metal plates are installed at a distance from each other inside the upper cover. One end of the first metal plate is connected to one end of the first resistor. The other end of the first resistor is connected to one end of the second resistor and one end of the third resistor. The other end of the second resistor is connected to the collector of the first transistor and the base of the second transistor. The base of the first transistor is connected to one end of the second metal plate. The collector of the second transistor is connected to the positive terminal of the LED. The emitters of the two transistors are connected. The other end of the third resistor is connected to the negative terminal of the LED.

[0013] Furthermore, the cover-opening control circuit includes a time control switch, a time relay module, a relay, and a photoelectric detection switch that are electrically connected. The positive power input terminal of the photoelectric detection switch is connected to the control power input terminal of the relay and the positive power input terminal of the time relay module. The negative power input terminal of the photoelectric detection switch is connected to the negative power input terminal and negative control power input terminal of the time relay module, the negative power input terminal of the relay, and the negative power input terminals of the two time control switches. The normally open contact terminal of the relay is connected to the positive power input terminals of the two time control switches. The positive control power input terminal of the time relay module is connected to the positive power input terminal of the relay.

[0014] Compared with existing technologies, the beneficial effects of this invention are as follows: Based on the trash can itself, and with the combined action of related mechanisms, the lid can automatically open when someone disposes of trash and automatically close after disposal. In cases where the trash can is full, tilted or displaced, damaged and leaking, overheating and causing a fire, generating harmful gases, or being overloaded, the invention can promptly alert relevant management personnel via mobile phone or PC applications. Furthermore, in the event of a fire caused by cigarette butts or other sources inside the can, it can automatically spray water to extinguish the fire, achieving a good safety effect. It can also provide real-time location information for people who are unsure of the trash can's location, making it convenient for them to find and dispose of trash promptly. In summary, this invention has promising application prospects. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention with the top cover closed.

[0017] Figure 2 This is a schematic diagram of the overall structure of the present invention with the top cover open.

[0018] Figure 3 This is a partial structural schematic diagram of the present invention.

[0019] Figure 4 Circuit diagram of the present invention. Detailed Implementation

[0020] Figure 1 , 2As shown in Figures 3 and 4, the smart trash can includes a trash can body 1, a battery G1, a charging socket CZ (the socket is located at the rear outer end of the component compartment, making it convenient to insert an external power charger plug into the charging socket to charge the battery G1), a WIFI positioning module E8, and a solenoid valve DC. It also has a data receiving unit, an analysis unit, a display unit, a hazardous gas detection circuit 2, a full bin detection circuit 3, a temperature detection circuit 4, a weight detection circuit 5, a leakage detection circuit 6, a tilt displacement detection circuit 7, a water level detection circuit 8, a lid opening control circuit 9, and a lid opening mechanism 10. The data receiving unit, analysis unit, and display unit are installed in the internet devices (smartphones or PCs) of relevant personnel (including managers and trash can users). The application software; the trash can body 1 is equipped with a support cylinder 101 with an open upper structure and a top cover 102. The lower rear part of the top cover 102 is hinged to the upper rear part of the trash can body 1. The lower end of the support cylinder has a sealed component compartment 103. The top cover 101 is a hollow structure. The lower part of the trash can body 1 is movably placed inside the support cylinder 101. The opening mechanism includes an electric push rod M1 and a fixed seat 1011. A support seat 104 is fixedly installed at the upper middle of the rear end of the trash can body 1. The middle part of the connecting rod 105 at the rear end of the top cover 102 is rotatably installed on the side of the support seat 104. The upper part of the movable column of the electric push rod M1 is rotatably installed on the rear side of the connecting rod 105. The front side of the fixed seat 1011 is fixedly installed at the lower middle of the rear outer side of the trash can body. The lower end of the cylinder of the electric push rod M1 is rotatably mounted to the rear end of the fixed base 1011; the rear end of the upper cover 102 has a water inlet pipe 1021, and a sealing cap is threaded onto the water inlet pipe 1021; the lower end of the upper cover 102 is equipped with four internally interconnected fire extinguishing pipes 1022, and the lower end of the fire extinguishing pipes 1022 has multiple water outlets at intervals; the upper part of the four fire extinguishing pipes 1022 is fixedly connected to the lower end of the solenoid valve DC via a pipe; the upper end of the solenoid valve DC is fixedly connected to the water outlet pipe at the lower end of the upper cover, and the upper end of the solenoid valve DC is internally interconnected with the upper cover 102; the upper cover 102 is filled with water; the battery G1, charging socket CZ, WIFI positioning module E8, harmful gas detection circuit 2, full tank detection circuit 3, and temperature detection... Circuits 4, 5, 6, 7, 8, and 9 (including the lid opening control circuit) are installed on the circuit board inside component compartment 103. The data receiving unit can receive data on the amount of trash, location, weight, temperature, and whether the trash can is damaged, leaking, or producing harmful gases, transmitted wirelessly by the WIFI positioning module. The analysis unit can analyze the data input by the data receiving unit and actively alert relevant personnel via the display unit when the trash can is full, displaced, tipped over, overweight, overheated, damaged, leaking, or producing harmful gases (the alerts can be text, vibration, etc.). The temperature detection circuit can control the solenoid valve to open and extinguish the fire inside the trash can when a fire occurs inside the trash can.

[0021] Figure 1 、 2As shown in Figures 3 and 4, the solenoid valve DC is a normally closed solenoid valve. The hazardous gas detection circuit includes a hazardous gas detection module E5 and a resistor R1 connected by wires. The signal output pin 3 of the hazardous gas detection module E5 is connected to one end of the resistor R1. The detection head of the hazardous gas detection module E5 is located on the upper left side of the inner part of the trash can body. The weight detection circuit includes a weight sensor E6 and a resistor R3 connected by wires. The signal output pin 3 of the weight sensor E6 is connected to one end of the resistor R3. The force-bearing surface of the weight sensor E6 is located outside the opening in the middle of the upper part of the component compartment 103 (the opening is sealed). The lower end of the trash can body 1 is in contact with the upper part of the force-bearing surface of the weight sensor E6. The full-can detection circuit includes a photoelectric detection switch E7 and a resistor R5 connected by wires. The detection head of the photoelectric detection switch E7 is located outside the middle of the upper inner part of the trash can body 1. The signal output pin 3 of the photoelectric detection switch E7 is connected to one end of the resistor R5. The temperature detection circuit includes a thermistor RT and resistors R6, R7, and R8 connected by wires, and a transistor Q1. The probe of the thermistor RT is located on the upper right side of the inner part of the trash can body 1. One end of the thermistor RT is connected to one end of the first resistor R6, one end of the second resistor R7, and one end of the third resistor R8. The other end of the second resistor R7 is connected to the base of the transistor Q1. The other end of the first resistor R6 is connected to the emitter of the transistor Q1. The other end of the thermistor RT is connected to the positive DC power input terminal of the solenoid valve. The negative DC power input terminal of the solenoid valve is connected to the collector of the transistor Q1. The leakage detection circuit includes a resistor R2 connected by wires and two copper plates T. The upper ends of the two copper plates T (the lower ends are fixedly installed inside the upper part of the component compartment) are insulated and located on the upper left side of the component compartment 103 with a distance of 2 mm between them. The first copper plate T is connected to one end of the resistor R2. The tilt displacement detection circuit includes a resistor R4 and a universal mercury switch S connected by wires. One end of the mercury switch S is connected to one end of the resistor R4. The mercury level of the mercury switch S is vertically located at the lower end of the component compartment, and the two contacts are located at the upper end. The water level detection circuit includes resistors R9, R10, and R11 connected by wires, two copper plates T1, a light-emitting diode V1, and transistors Q2 and Q3. The upper ends of the two copper plates T1 (the lower ends are fixedly installed inside the lower end of the upper cover) are insulated and located 2 mm apart inside the lower end of the upper cover 102. The first copper plate T1 is connected to one end of the first resistor R9. The other end of the first resistor R9 is connected to one end of the second resistor R10 and one end of the third resistor R11. The other end of the second resistor R10 is connected to the collector of the first transistor Q2 and the base of the second transistor Q3. The base of the first transistor Q2 is connected to one end of the second copper plate T1. The collector of the second transistor Q3 is connected to the positive terminal of the light-emitting diode V1. The emitters of the two transistors Q2 and Q3 are connected. The other end of the third resistor R11 is connected to the negative terminal of the light-emitting diode V1.The cover opening control circuit includes time switches E3 and E4, time relay module E2, relay J1, and photoelectric detection switch E1 connected by wires. The detection head of photoelectric detection switch E1 is located in the middle of the front outer end of component compartment 103. The positive power input terminal 1 of photoelectric detection switch E1 is connected to the control power input terminal of relay J1 and the positive power input terminal 1 of time relay module E2. The negative power input terminal 2 of photoelectric detection switch E1 is connected to the negative power input terminal 2 and the negative control power input terminal 4 of time relay module E2, the negative power input terminal of relay J1, and the negative power input terminals of two time switches E3 and E4. The normally open contact terminal of relay J1 is connected to the positive power input terminals of two time switches E3 and E4. The positive control power input terminal 3 of time relay module E2 is connected to the positive power input terminal of relay J1.

[0022] Figure 1 , 2 As shown in Figures 3 and 4, the power input terminals of the following circuits are connected: the two terminals of battery G1, the two ends of charging socket CZ, pins 1 and 2 of WIFI positioning module E8, pins 1 and 2 of hazardous gas detection module E5, pins 1 and 2 of photoelectric detection switch E7, the other end of thermistor RT and the emitter of transistor Q1, the power input terminal of weight detection circuit, pins 1 and 2 of weight sensor E6, one end of the second copper plate T of leakage detection circuit, the other end of mercury switch S of tilt displacement detection circuit, the other end of resistor R9 and the emitter of transistor Q3 of water level detection circuit, and the power input terminal of lid opening control circuit. Pins 1 and 2 of the input time relay module E2 are connected by wires. Pins 3 and 4 of the time control switches E3 and E4, which are the power output terminals of the lid opening control circuit, and the positive and negative power input terminals of the electric push rod M1 are connected by wires. The other end of the signal output resistor R1 of the hazardous gas detection circuit, the other end of the signal output resistor R5 of the full barrel detection circuit, the other end of the signal output resistor R8 of the temperature detection circuit, the other end of the signal output resistor R3 of the weight detection circuit, the other end of the signal output resistor R2 of the leakage detection circuit, the other end of the signal output resistor R4 of the tilt displacement detection circuit, and pins 8, 7, 5, 6, 4, and 3 of the WIFI positioning module E8 are connected by wires.

[0023] Figure 1 , 2As shown in Figures 3 and 4, this invention, based on the trash can body 1, possesses all the functions of a regular trash can for holding garbage. Since trash cans are very common devices with a very simple usage process, this application will not elaborate on the operating principle of the trash can body 1. In this invention, the battery G1 outputs a stable 12V DC power supply to the power input terminals of the WIFI positioning module E8, the hazardous gas detection circuit, the full bin detection circuit, the temperature detection circuit, the weight detection circuit, the leakage detection circuit, the tilt displacement detection circuit, the water level detection circuit, and the lid opening control circuit. These circuits and modules operate when powered on. In the lid opening control circuit, before anyone approaches the trash can body 1, pin 3 of the photoelectric detection switch E1 does not output a high level, and the corresponding electric push rod M1 will not open or close the lid 102. When someone approaches within about 30 centimeters of the trash can body 1, pin 3 of the photoelectric detection switch E1 outputs a high level, which enters pin 3 of the time relay module E2. Under the action of its internal circuit, pin 5 of the photoelectric detection switch E1 outputs a high level for 22 seconds (time adjustable), which enters the positive power input terminal of the relay J1. The relay J1 is energized and its control power input terminal and normally open contact terminal close. Subsequently, the two time control switches E3 and E4 are energized and work. After the time control switch E3 is energized, its pins 3 and 4 will output a positive and negative power supply for 6 seconds, which enters the power input terminal of the electric push rod M1. The movable column of the electric push rod M1 moves downward and drives the rear end of the connecting rod 105 of the upper cover 102 to move downward to the stop point and stop working (the upper cover is in the fully open state). Then, the staff can throw trash into the trash can body 1. After the time control switch E4 is powered on, its pins 3 and 4 will output a 6-second negative and positive power supply every 10 seconds to the power input terminal of the electric push rod M1. The movable column of the electric push rod M1 moves upward and drives the rear end of the connecting rod 104 of the top cover 102 to move upward to the stop point and stop working. The top cover is in a fully closed state. The process of automatically opening the top cover when garbage is disposed of and automatically closing the top cover after garbage is disposed of is completed.

[0024] Figure 1 , 2As shown, in the hazardous gas detection circuit, when no hazardous gas is generated inside the trash can body 1, pin 3 of the hazardous gas detection module E5 does not output a high level, so pin 8 of the WIFI positioning module E8 will not input a high-level signal. When hazardous gas is generated inside the trash can body 1, pin 3 of the hazardous gas detection module E5 outputs a high level, which is then stepped down and current-limited by resistor R1 before entering pin 8 of the WIFI positioning module E8. In the full-can detection circuit, when the trash can body 1 is not full, there is no obstruction about 3 cm in front of the detector head of the photoelectric detection switch E7, so pin 7 of the WIFI positioning module E8 will not input a high-level signal. When the trash can body 1 is full, the detector head of the photoelectric detection switch E7 is blocked by an object, so pin 3 of the photoelectric detection switch E7 outputs a high level, which is then stepped down and current-limited by resistor R5 before entering pin 7 of the WIFI positioning module E8. In the temperature detection circuit, the thermistor RT has a low resistance when the temperature inside the trash can is high and a high resistance when the temperature is low. The 12V power supply is divided between the thermistor RT and resistor R6, and then stepped down and current-limited by resistor R8 before entering pin 5 of the WIFI positioning module E8 (the higher the temperature, the higher the input voltage signal, and vice versa). When the temperature inside the trash can body 1 is relatively low (e.g., not exceeding 50°C), the 12V power supply is divided between the thermistor RT and resistor R6, and stepped down and current-limited by resistor R7 before entering the base of transistor Q1, where the voltage is below 0.7V. Transistor Q1 will not conduct, so the DC current of the solenoid valve will not be energized, and its valve core will remain de-energized. When the temperature inside the trash can body 1 is relatively high (e.g., exceeding 50°C, at which temperature the probability of fire inside the trash can body is very high), the 12V power supply is divided between the thermistor RT and resistor R6, and stepped down and current-limited by resistor R7 before entering the base of transistor Q1. When the base of transistor Q1 is above 0.7V, Q1 conducts, and its collector outputs a low-level signal that enters the DC power input of the solenoid valve. This energizes the DC solenoid valve, opening its valve core. Water from the top cover then flows out from the lower end of the DC solenoid valve, through multiple openings (water outlets) at the lower end of the fire extinguishing pipe 1022, and into the trash can body 1 to extinguish the fire. After extinguishing the fire, the temperature inside the trash can body 1 decreases again, causing transistor Q1 to turn off, and the DC solenoid valve to close, completing the fire extinguishing process. In the weight detection circuit, the weight of the trash acts on the weight sensor E6 via the trash can body 1. The greater the weight, the higher the voltage signal output from pin 3 of the weight sensor E6, and vice versa. This voltage signal is then stepped down and current-limited by resistor R3 before entering pin 6 of the WIFI positioning module E8. In the leakage detection circuit, when the trash can body 1 does not leak, the resistance between the two copper plates T is infinite, so pin 4 of the WIFI positioning module E8 will not input a high-level signal; when the trash can body 1 leaks, the resistance between the two copper plates T decreases, so the 12V power supply will be stepped down and current limited by resistor R2 and enter pin 4 of the WIFI positioning module E8.In the bin tilt or displacement detection circuit, when the bin body does not tilt or shift, the mercury switch S will not shift, so pin 3 of the WIFI positioning module E8 will not receive a high-level signal; when the bin body tilts or shifts, the mercury switch S will close due to the shaking of the internal liquid level and contacts, so the 12V power supply will be stepped down and current limited by resistor R4 and enter pin 3 of the WIFI positioning module E8. The WIFI positioning module E8 converts the input analog signals of harmful gas generation inside the trash can, trash can fullness, trash can temperature, trash can weight, trash can leakage, and trash can tilting or displacement into digital signals. These signals are then wirelessly transmitted via the WIFI positioning module E8 (which has both data transmission and positioning functions). The data receiving unit in the relevant personnel's mobile phone receives these various data signals, processes them initially, and transmits them to the analysis unit. The analysis unit analyzes the data received from the data receiving unit and can proactively alert relevant personnel via the display unit when the trash can is full, displaced or tipped over, overweight, overheated, damaged and leaking, or generating harmful gases (the alerts can be text, vibration, etc.). Relevant management personnel can promptly handle the situation on-site when the trash can malfunctions (e.g., emptying trash, extinguishing fires, draining leaks, and repairing damaged trash cans). It can also provide real-time location information for people who do not know the location of the trash can, making it convenient for them to find the trash can and dispose of their trash in a timely manner.

[0025] Figure 1 , 2 As shown in Figures 3 and 4, when there is water inside the top cover, the water submerges the two copper plates T1. In this case, the 12V power supply, through resistor R9 and copper plate T1, is stepped down to a voltage higher than 0.7V at the base of transistor Q2. Transistor Q2 conducts, and its collector outputs a low level, which then enters the base of transistor Q3. Since the base of transistor Q3 has no suitable forward bias, it remains in the off state, and therefore, LED V1 will not be energized and will light up. When there is no water inside the top cover, the water no longer submerges the two copper plates T1. In this case, the 12V power supply, through resistor R8 and copper plate T1, is stepped down to a voltage lower than 0.7V at the base of transistor Q2. Transistor Q2 is cut off, and its collector no longer outputs a low level, which then enters the base of transistor Q3. The base of transistor Q3, through resistor R10, receives a suitable forward bias from the 12V power supply, conducts, and outputs a low level, which enters the negative power input terminal of LED V1. LED V1 will then be energized and light up to alert the staff to add water in time (resistor R11 acts as a voltage reducer and current limiter).

[0026] Figure 1 , 2As shown in Figures 3 and 4, through all the above technical solutions, this new invention, under the joint action of relevant mechanisms, can promptly alert relevant management personnel via mobile phones or PCs when the trash can itself is full of trash, tilted or displaced, damaged and leaking, experiences fire due to excessive temperature, generates harmful gases, or is overloaded. Furthermore, it can automatically spray water to extinguish fires caused by cigarette butts inside the can, achieving good safety results. It can also provide real-time location information for people who do not know the location of the trash can, making it convenient for relevant personnel to find the trash can and dispose of their trash promptly. In summary, this invention has good application prospects. Figure 4 In this circuit, mercury switch S is a universal mercury switch; transistors Q1, Q2, and Q3 are model 9013; relay J1 is a DC 12V relay; resistors R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, and R111 have resistance values ​​of 1K, 1K, 1K, 1K, 1K, 4.7K, 1K, 1K, 4.7K, 100K, and 1.8K respectively; thermistor RT is a negative temperature coefficient thermistor of model NTC103D; and time switches E3 and E4 are model KG. The 316 time switch is a finished product with two power input terminals, two power output terminals, and seven setting buttons. By operating the seven setting buttons, the output time of the two power output terminals can be set. LED V1 is a red LED. The DC solenoid valve is a 1W normally closed solenoid valve. The time relay module E2 is a YYS-2 model time relay module with two power input terminals (pins 1 and 2), two trigger signal input terminals (pins 3 and 4), one normally open power output terminal (pin 5), and one normally closed power output terminal. The output terminal has 6 pins (floating) and four setting buttons. After power-on, adjusting the four setting buttons allows you to adjust and set the interval for the normally open power output terminal to output power (when the two trigger signal input terminals receive signals, the power output terminal will output power for the set time); photoelectric detection switches E1 and E7 are NPN type photoelectric switches of model E3F-DS300C1, which have two power input terminals and one signal output terminal. When there is an obstacle in front of the detector head, the signal output terminal outputs power, otherwise it does not output power (it also has a distance adjustment knob; adjusting to the left shortens the detection distance, and adjusting to the right lengthens the detection distance; E1 is adjusted to 30 cm, and E7 to 3 cm); the weight sensor E6 is a finished weighing sensor of model HZC-30A, which has two power input terminals and one signal output terminal; the hazardous gas detection module E5 is a combustible gas detection module of model MQ-2, which has two power input terminals and one signal output terminal; the WIFI positioning module E8 is model AIR724UG (with data transmission and positioning functions).

[0027] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. It will be apparent to those skilled in the art that the present invention is limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0028] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smart trash can, comprising a trash can body, a storage battery, a WIFI positioning module, and a solenoid valve, characterized in that: It also includes a data receiving unit, an analysis unit, a display unit, a hazardous gas detection circuit, a full bin detection circuit, a temperature detection circuit, a weight detection circuit, a leakage detection circuit, a tilt displacement detection circuit, a water level detection circuit, a lid opening control circuit, and a lid opening mechanism; the data receiving unit, analysis unit, and display unit are application software installed in the internet device; the trash can body is equipped with a support cylinder and a top cover, the lower end of the support cylinder has a component compartment, the top cover is a hollow structure, and the lower rear end of the top cover is hinged to the upper rear end of the trash can body, the lower end of the trash can body is placed inside the support cylinder; the lid opening mechanism... The structure includes an electric push rod and a fixed base. A support base is fixedly installed on the upper rear end of the trash can body. The front part of the connecting rod at the rear end of the top cover is rotatably installed on the side of the support base. The upper part of the movable column of the electric push rod is rotatably installed on the rear side of the connecting rod. The front side of the fixed base is fixedly installed on the lower rear outer side of the trash can body. The lower end of the cylinder of the electric push rod and the rear end of the fixed base are rotatably installed together. The rear end of the top cover has a water inlet pipe and a sealing cap. The lower end of the top cover's water outlet pipe is fixedly connected to one end of a solenoid valve. The other end of the solenoid valve is fixedly connected to the water inlet of multiple fire extinguishing pipes. The lower end of the fire extinguishing pipes has multiple water outlet holes. The top cover is filled with... Water is present; the battery, WIFI positioning module, hazardous gas detection circuit, full container detection circuit, temperature detection circuit, weight detection circuit, leakage detection circuit, tilt displacement detection circuit, water level detection circuit, and lid opening control circuit are installed in the component compartment; the power output terminal of the lid opening control circuit and the power input terminal of the electric push rod are electrically connected; the signal output terminals of the hazardous gas detection circuit, full container detection circuit, temperature detection circuit, weight detection circuit, leakage detection circuit, and tilt displacement detection circuit are electrically connected to the multi-channel signal input terminals of the WIFI positioning module; the temperature detection circuit... The power output terminal and the power input terminal of the solenoid valve are electrically connected; the data receiving unit can receive data on the amount of garbage, location, weight, temperature, whether it is damaged and leaking, and whether it produces harmful gases, which are wirelessly transmitted by the WIFI positioning module. The analysis unit can analyze the data input by the data receiving unit and can actively alert relevant personnel through the display unit when the garbage can is full, displaced or tipped over, overweight, overheated, damaged and leaking, or producing harmful gases. The temperature detection circuit can control the solenoid valve to open and extinguish the fire inside the garbage can when a fire occurs inside the garbage can.

2. The intelligent trash can according to claim 1, characterized in that, The hazardous gas detection circuit includes a hazardous gas detection module and a resistor that are electrically connected, with the signal output terminal of the hazardous gas detection module connected to one end of the resistor.

3. The intelligent trash can according to claim 1, characterized in that, The weight detection circuit includes a weight sensor and a resistor that are electrically connected. The signal output terminal of the weight sensor is connected to one end of the resistor, and the lower end of the trash can body is in contact with the upper end of the force-bearing surface of the weight sensor.

4. The intelligent trash can according to claim 1, characterized in that, The full barrel detection circuit includes a photoelectric detection switch and a resistor that are electrically connected, with the signal output terminal of the photoelectric detection switch connected to one end of the resistor.

5. The intelligent trash can according to claim 1, characterized in that, The temperature detection circuit includes an electrically connected thermistor, resistor, and transistor; one end of the thermistor is connected to one end of the first resistor, one end of the second resistor, and one end of the third resistor; the other end of the second resistor is connected to the base of the transistor; and the other end of the first resistor is connected to the emitter of the transistor.

6. The intelligent trash can according to claim 1, characterized in that, The leakage detection circuit includes a resistor connected by wires and two metal plates. The upper ends of the two metal plates are installed at a distance from each other on the outside of the component compartment. The first metal plate is connected to one end of the resistor.

7. The intelligent trash can according to claim 1, characterized in that, The tilt displacement detection circuit includes an electrically connected resistor and a mercury switch. One end of the mercury switch is connected to one end of the resistor. The mercury level of the mercury switch is vertically located at the lower end of the component compartment, and the two contacts are located at the upper end.

8. The intelligent trash can according to claim 1, characterized in that, The water level detection circuit includes an electrically connected resistor, two metal plates, a light-emitting diode (LED), and a transistor. The two metal plates are installed at a distance from each other inside the top cover. One end of the first metal plate is connected to one end of the first resistor. The other end of the first resistor is connected to one end of the second resistor and one end of the third resistor. The other end of the second resistor is connected to the collector of the first transistor and the base of the second transistor. The base of the first transistor is connected to one end of the second metal plate. The collector of the second transistor is connected to the positive terminal of the LED. The emitters of the two transistors are connected. The other end of the third resistor is connected to the negative terminal of the LED.

9. The intelligent trash can according to claim 1, characterized in that, The cover opening control circuit includes a time control switch, a time relay module, a relay, and a photoelectric detection switch that are electrically connected. The positive power input terminal of the photoelectric detection switch is connected to the control power input terminal of the relay and the positive power input terminal of the time relay module. The negative power input terminal of the photoelectric detection switch is connected to the negative power input terminal and negative control power input terminal of the time relay module, the negative power input terminal of the relay, and the negative power input terminals of the two time control switches. The normally open contact terminal of the relay is connected to the positive power input terminals of the two time control switches. The positive control power input terminal of the time relay module is connected to the positive power input terminal of the relay.

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