At present, noise is one of the main environmental pollutants that even government agencies are paying attention to find solutions for its control. Noise pollution traditional methods are based on expensive electronic devices—limited to constant monitoring in real-time. In recent years, (IoT), the internet of things diverse strategies, has been proposed to tackle this issue by offering low-cost sensors, capturing and storing real-time data for better decision-making processes. This article presents the results from an exploratory literature revision regarding Noise Pollution solution proposals based on IoT. in 17 articles indexed in a high-impact database with four research questions about the proposed layers, cover for the control of environmental noise, technological elements, and current limitations and gaps in the problem of environmental noise, defining an OiT system of four layers to define the functionalities of monitoring and analysis of noise levels, the review process established stages such as the identification of critical terms, location of literature, evaluating and selecting literature, organizing and finally summarizing the literature review.
Ecuador subsidizes fuels, the problem with this benefit is that, many citizens are dedicated to illegally market these resources in border cities, among these fuels there are the cylinders of liquefied petroleum gas; the existing fragile control greatly benefits smuggling, representing a loss of resources for Ecuador. There is no subsidy in neighboring countries such as Peru and Colombia, and unfortunately some citizens have chosen to engage in illegal fuel marketing, generating economic losses for the country. The actual cost of a 15 kilo gas cylinder is 12.00 dollars, however, it is sold at 1.60 dollar. It means that the government subsidizes 89% of the price of gas, with barely 11% being paid by consumers. (Diario el Comercio, 2013) People who take advantage of the poor control of illegal marketing, reduce the number of cylinders in border areas of Ecuador and therefore increase the price, this situation has generated inconveniences for Ecuadorian citizens when they can not acquire gas cylinders. Currently, given the advance of technology in particular of microelectronics, it is very common to use portable electronic devices such as RFID (Radio Frequency Identifier) tags, for this project the active labels of 2.4 GHz allow the unique identification of each gas cylinder, as well as the portability of the information and the relation of belonging between gas cylinders and citizens, facilitating their monitoring and control.
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