On 1 July 2019, Shanghai officially implemented the rubbish classification policy. According to Article 4 of the Shanghai Municipal Regulations on the Management of Domestic Waste, domestic waste is divided into four major categories: 1. recyclables; 2. hazardous waste; 3. wet waste; and 4. dry waste. This policy continues to be fermented online, and rubbish classification has become the buzzword of the year. --What kind of rubbish are you? Shanghai people have been "driven crazy" - Dreaming that they don't know how to separate rubbish, they were found by the neighbourhood committee's amah in the middle of the night when they were secretly taking out the rubbish, and as a result, they were stuffed into the "hazardous garbage". "Hazardous waste" - the most fashionable street bag this year ......
Although online segments continue, Shanghai's rubbish classification is being implemented methodically, and is believed to be unfolding in more and more cities as well. Rubbish classification represents a gradual step towards intelligent waste management, and rubbish collection has been a topic of constant questions. It is a common phenomenon in daily life that the rubbish bins are empty when they are collected, and they are full when they are not collected, so when exactly should the rubbish be collected?
An important aspect that accompanies the ongoing development of smart cities in recent years is waste management. The intersection of waste management and smart city development has given birth to "smart waste management". Smart cities are using the Internet of Things (IoT) to create an effective system to save cities money and save the environment, using sensor technology to optimise smart waste collection times and routes.
An ultrasonic range sensor is installed in the bin to monitor the height of the bin waste in real time, communicating through the IoT when a pre-set height is reached or exceeded, intelligently regulating the waste collection vehicle to collect the waste, and the waste management company is also able to predict when the bin will be full based on the data collected, and schedule the waste collection in a planned manner. According to Enevo Finland, intelligent bins can reduce unnecessary vehicle fuel and labour costs, and the system can help waste management organisations reduce their operating costs by around 20% to 40%, while also ensuring a hygienic urban environment.
The Ultrasonic Ranging Sensor for Trash Bins (UM0034-002) provided by Audiowell is an intelligent solution applied to detect the capacity of trash bins. The sensor transmits and receives ultrasonic waves during operation, and based on the flight time of the transmitted and received ultrasonic waves, it determines the horizontal height of the trash in the bin, which leads to the linkage of communication alerts. Ultrasonic range sensors in the proximity of the range of the sensor has a very high stability and weather resistance, for rubbish collection to reduce costs and improve efficiency.