Design and development of intelligent trash can scheme

Traditional trash cans have lids, which need to be opened manually or by foot. Through the investigation of this type of product, it is found that this type of product is extremely inconvenient to use, and the hygienic environment is relatively poor when used, which is likely to cause nausea to the user. In many public places, we can see similar trash cans everywhere, but there is a lot of garbage around the trash can. The main reason is that the garbage can not be accurately put into the bucket or the garbage is full, and there is no cleaning staff to deal with it in time. , leading to a vicious circle in the environment. In order to solve this problem, this paper puts forward the design concept of a new intelligent trash can and puts forward the corresponding design scheme. It is hoped that through this program, people can better understand the working principle of smart trash cans and help people prevent diseases spread through trash cans, so as to better realize the enjoyment of intelligent life.

1. Working principle of smart trash can

The trash can designed in this paper is different from traditional products, and the system will be presented in front of people in a more humanized interactive way. The system has the following functions:

(1) When the load capacity of the trash can is about to reach the maximum, the system will automatically send a notification message to the relevant cleaning personnel to ensure that the trash can can be cleaned up in a timely and effective manner;

(2) When the human body throws garbage into the trash can, the system will automatically open the lid of the trash can and close it automatically after the action is completed;

(3) When the system performs corresponding tasks, it notifies the corresponding function mode through voice to present it to the user in a more humane manner;

This system is mainly composed of ATMGEA16 single-chip microcomputer, human body infrared sensor, photoelectric detection module, voice control module and GSM mobile phone module. It is a high-tech product integrating micro-motor technology, sensor technology and automatic control technology. The system detects in real time whether there is a human body throwing garbage into the trash can through the infrared sensor of the human body. If the sensor detects a relevant signal, the signal is sent to the single-chip microcomputer for processing and analysis. Finally, the single-chip microcomputer drives a series of actions of the trash can, such as opening the lid, Closing the lid, etc., the voice circuit will also broadcast corresponding voice signals along with these actions to ensure that the system can interact with people in a friendly manner. Raise people's awareness of protecting the environment. A garbage detection circuit is set in the system. When the garbage in the system reaches the predetermined position, a signal will be sent to the single-chip microcomputer, and the signal will send a relevant prompt message to the cleaning staff through the single-chip microcomputer with information about the trash can to remind the cleaning staff in time Clean up the trash can. Can achieve to ensure that the environment is always clean. When designing, in order to ensure that the system can reduce power consumption and avoid energy waste, such a program is set that if no relevant trigger signal is detected within a certain period of time, the system will automatically jump to the set sleep mode to save energy. the goal of. When the main control enters the dormant state, if there is a signal to trigger the relevant action, the corresponding module can be started to wake up the microcontroller, and the previous circuit will immediately enter the working state mode. This system has a full range of automatic control with voice, sound, high security, and easy operation, which can effectively ensure that the environment is always clean. Stopping the spread of bacterial diseases is a powerful tool for protecting human health and safety.

2. Functional characteristics of the smart trash can solution

There are various garbage cans on the market, and the functions are similar. Basically, they still rely on manual or foot pedals to open the lids to realize the delivery of garbage. This article mainly designs a set of trash cans that are different from the traditional ones. The following points are destined to bring people a more comfortable life.

The system is equipped with a mobile phone GSM module to notify the relevant cleaning personnel of the basic status information of the trash can, which fundamentally solves the garbage pollution caused by the overflow of garbage and no one cleans it in time, affecting people's study, work and life.

The system can automatically open and close the trash can. When a human body throws garbage into the trash can, the system will automatically open and close the trash can, further ensuring that the garbage can be placed in the designated position accurately.

In order to ensure the humanized characteristics of the system, the voice broadcast function is designed to automatically broadcast relevant mode prompts, which can improve the awareness of environmental protection.

The system has high expansibility, and the application of this principle can evolve into an anti-theft system, a smart home control system, etc., and has extensive market development potential. The system is energy-saving and environment-friendly, simple to operate, low in cost, small in size and has a certain degree of entertainment. It is suitable for various units, enterprises, office buildings, public places, etc.

The system mainly uses ATMEGA16 as the main control chip, and is equipped with a voice broadcast module, a GSM mobile phone module, a human body infrared sensor module, and a photoelectric detection module. Its main features are as follows:

(1) Energy saving and environmental protection functions. The system is designed with a sleep wake-up function. If no one throws garbage within the specified time range, the single-chip computer will automatically cut off all circuits except the human body infrared sensor module, and then the single-chip computer will enter the sleep mode to ensure that the system can reduce energy consumption to the greatest extent. . The voice broadcast function is designed in the system. The voice system reminds people to sort and put garbage, which realizes the purpose of energy saving and environmental protection. When the system is in sleep mode, it can wake up the microcontroller according to the human body infrared sensor to resume work.

(2) Clean, tidy and hygienic. The human body infrared sensor of the system detects whether someone is putting in garbage at all times. If such a condition is met, the lid of the garbage can will be automatically opened and closed, avoiding the breeding of bacterial diseases caused by the contact between the human body and the garbage and not cleaning it in time. The system integrates the mobile phone GSM module, and when the capacity of the trash can is almost full, it can promptly notify the cleaning staff to clean up the trash can in time.

(3) Harmonious voice broadcast function. The system can send out some warm and interesting voice prompts according to different occasions, and it can also be used for entertainment, which also attracts children's attention and enables them to develop a habit of saving energy, protecting the environment and caring for the environment from an early age.

3. Design framework of intelligent trash can system

The smart trash can is mainly composed of a main control system, a measurement unit, a power management module, and an actuator, and its structural block diagram is shown in the figure below. The system mainly uses human body infrared sensors and photoelectric sensors as the main measuring mechanism. It uses human body infrared sensors to detect whether someone is putting in garbage. The photoelectric sensor detects the status of the garbage in the garbage can. If the amount of garbage reaches the predetermined amount, the system will send a reminder message to the cleaning staff through the GSM module to ensure that the system is always clean and hygienic. The left side of the block diagram is the measurement module of the system, the right side is the system's executive mechanism, and the middle part is the central processing unit, the core component of the system, which mainly controls the work of each component.

4. Design idea of intelligent sorting trash can scheme

China is now building a green and beautiful China, and intelligent sorting trash cans are in line with the current situation. The main purpose of this design is to gradually guide people to change their concepts and thoughts, realize that everyone has the responsibility to protect the environment, and protect the environment spontaneously.

4.1 Radio Frequency Identification Module

This design uses radio frequency identification (RFID) technology to realize the intelligent sorting of garbage. When the user throws garbage, RFID can read the information of the garbage, and identify the garbage according to the information, and then use the frequency signal to transmit the information from the RFID tag to the RFID reader, and then transmit it to the single-chip microcomputer after being processed by the middleware [1 ]. If the tag information is successfully matched with the information in the single-chip computer library file, the lid of the garbage can in different areas that can be recycled is opened through the mechanical structure; if the matching is unsuccessful, the lid of the garbage can in the non-recyclable area is opened. This module has the characteristics of intelligent classification such as high sensitivity and strong operability.

4.2 Ordinary waste classification

The non-metallic garbage is detected by RFID, the tag information is identified, the tag information is transmitted to the single-chip microcomputer, and then the single-chip microcomputer is compared with the information in the library file to realize the accurate classification of garbage. If the label information is not recognized, re-check; if it is still not recognized, it is non-recyclable garbage.

4.3 Metal waste classification

Since ordinary RFID electronic tags are mixed with metal, there will be metal isolation, and the tag information will appear garbled. There are three solutions: first, when the single-chip microcomputer detects garbled characters, the single-chip microcomputer can treat it as detecting metal, but technical errors may also occur in the design of the electronic label, resulting in garbled characters, so this method has certain defects; the second is to use metal detection This method is greatly affected by the external environment. If the trash can itself is made of metal, or people detect metal objects on their bodies when throwing trash, it is easy to make mistakes; the third is to use anti-metal RFID electronic tags, which can be effective Avoid garbled characters as much as possible, but the price of such tags is two to three times more expensive than ordinary electronic tags. By comparison, the use of anti-metal RFID electronic tags meets the requirements of accurate judgment, and ordinary tags can be used in some places where the accuracy is not high.

5. Functional advantages of intelligent sorting trash cans

5.1 Device function

(1) Automatic identification and intelligent classification: After repeated identification of multiple frames of information through RFID technology, the information is transmitted to the single-chip microcomputer. According to the received label information, the single-chip microcomputer sends garbage classification information instructions to each device, so that different types of garbage fall into different areas, and realize the precise classification and recycling of garbage.

(2) Safety and environmental intelligence inspection: (a) Safety monitoring. A temperature sensor is installed in the trash can, and the temperature sensor is used to monitor the internal temperature of the trash can in real time. Once the temperature is higher than the safe temperature, the voice alarm system is called to send an alarm signal through the single-chip microcomputer immediately. (b) Environmental cleanup. An ultrasonic sensor is installed on the top of the trash can, and the ultrasonic sensor is used to detect the storage status of the trash can in real time, which is fed back to the LCD display through the single-chip microcomputer, and the display screen records the remaining capacity. If the trash can is full, it reminds people that they can no longer continue to put in garbage, so as to prevent the garbage from overflowing and pollute the environment, and at the same time, it is convenient for cleaning personnel to clean up the garbage on time.

5.2 Function introduction

(1) Radio frequency technology to identify whether garbage is recyclable: This design uses RFID technology to embed microchips into product manufacturing. The information on whether the products are recyclable is entered in the early stage of manufacturing, and the microchips will automatically send the predetermined information of various products to the scanner. In this way, the identification of the product and the subsequent processing of the recycled garbage information are realized. When the trash can detects the electronic tag, it will automatically enter the product information. The whole process does not require manual scanning like barcode technology.

(2) Intelligent classification: After the garbage bin completes the RFID identification of the garbage, the chip records the category information of the garbage, and then passes it to the single-chip microcomputer. Once the garbage enters the detection and classification area, the single-chip computer compares the garbage information with its library file information. After the comparison is successful, it will The corresponding area is opened by controlling the movement of the mechanical structure; if the comparison is unsuccessful, the non-recyclable area of the trash can is opened, realizing the function of garbage detection and classification.

(3) Real-time detection of the storage capacity and temperature in the trash can: Use a temperature sensor to monitor the internal temperature of the trash can in real time to avoid the risk of safety problems caused by internal device heating and external factors that cause the temperature to be higher than the safe temperature. The ultrasonic sensor placed on the top of the trash can can detect the effective storage space of the trash can in real time. When the trash can is full, it sends a signal, and the display screen is controlled by a single-chip microcomputer to remind the cleaning staff to deal with the garbage.

(4) Automatic alarm: Under the strict monitoring of the temperature sensor, when the temperature of the trash can is higher than the safe temperature, the alarm device of the trash can will start immediately and stop all work by itself.

6. Innovation points of intelligent sorting trash cans

(1) Accurate identification: RFID technology can realize accurate identification of garbage. Using the transmission characteristics of radio frequency signal space coupling (inductive or electromagnetic coupling), the automatic extraction and identification of the information carried by the identified object is realized within the range of the directional beam of the reader antenna. The emitted electromagnetic waves are reflected after hitting the target and bring back the target information The characteristics of the information are passed to the microcontroller. And as long as the reader antenna is arranged reasonably, there is no detection dead angle in theory, and it can realize the seamless identification of electronic tags.

(2) Multi-frame error correction: Under the condition of ensuring that the reader simultaneously recognizes and reads the RFID electronic tag information one by one, repeat the multi-frame recognition for the same tag, and at the same time retain all the detected data. Finally, error correction is performed on all temporarily stored identification code data of each frame, that is, the data with the most recognition times is taken as the correct label data for intelligent and accurate classification, so as to achieve the purpose of error correction and improve the accuracy of garbage classification to at least 99%.

Summarize

In this article, we first analyze and summarize the current status and defects of the current garbage, and refer to the existing intelligent similar products and add GSM technology to form a very technological product. By integrating proven technologies. A smart trash can based on GSM module is designed. The product has high timeliness, powerful functions, perfect performance, low power consumption, and low development cost. It is believed that it can bring pleasing enjoyment to the society. Trash cans can be seen everywhere, whether in corporate units or public places, they can be found. It can be said that it is inseparable from our lives, so smart trash cans have a broad application prospect. Compared with traditional trash cans, this system has powerful functions and adds technological elements to human thoughts. It not only has the function of voice prompts, but also can notify the cleaning staff at any time to clean up the trash in time. I believe this system can benefit the people. . benefit society.

The above are the details of the smart trash can solution introduced by Shenzhen Zuchuang Microelectronics Co., Ltd. for you. If you have the development and design needs of smart trash cans, you can rest assured to entrust them to us. We have rich experience in custom development of electronic products, and can evaluate the development cycle and IC price as soon as possible, and can also calculate PCBA quotations. We are a number of chip agents at home and abroad: Songhan, Yingguang, Jieli, Ankai, Quanzhi, realtek, with MCU, voice IC, Bluetooth IC and module, wifi module. Our development capabilities cover PCB design, single-chip microcomputer development, Bluetooth technology development, software customization development, APP customization development, WeChat official account development and other hardware and software design. It can also undertake the research and development of smart electronic products, the design of household appliances, the development of beauty equipment, the development of Internet of Things applications, the design of smart home solutions, the development of TWS earphones, the development of Bluetooth earphone speakers, the development of children's toys, and the development of electronic education products.