۱- Introduction

۲- Details of mechanism

۳- Networked automatic washing streetlight system

۴- SMS control commands of SIM900 GSM/GPRS modem

۵- Conclusions

References

Abstract

The illumination of the streets and public area in metropolitan cities is a vital service, which is not only related to the type of the light but also the dirtiness of the surface of the light. In this paper, both subjects are considered to increase the productivity of the light. To achieve this goal, a novel Automatic washing system (AWS) of LED street/public light surface was designed, manufactured and installed practically. The proposed mechanism consists of two main parts comprising mechanical and electrical systems. AWS operates based on internet interconnection technique known as Internet of Things (IoT) with a high productivity. The system has the potential to be designed and employed by four types of control system; (i) using a timer switch, (ii) using a GSM 900, (iii) using a push button manually by an operator, and (iv) using a remote-control module such as GSM, SIM 808 or GPRS/GPS/SMS through the Ethernet network. A practical system has been manufactured and installed in Kermanshah city in Iran, due to its low cost, low maintenance, upgradability, and feasibility of installing different recognition sensors such as rain and dust sensors.

Introduction

The rapid increase of urbanization and constructions at large cities around the world caused the expansion of the industrial activities and transportation, which significantly have produced a huge amount of pollutants and dusts. This is one of the main challenges in metropolitan cities [1] in which pollutants are spread everywhere widely and the street light surfaces are not exceptional. Interestingly, due to the humidity and heavy materials, the quality and quantity of pollutants and dusts have different persistent deposition [2] even on the surface of the street lights. Therefore, the influence of deposition can be irreversible on the lights both in the reduction of the illumination and increase the temperature, which damages the lights and electrical connections. It is obvious that the reduction of illumination in cities has negative effects on safety, which can increase crimes and accidents. In addition, due to the dirt accumulation of the lights, the required illumination significantly reduces without more power saving. It has been shown that the illumination of lights is reduced up to 60% due to the dirt accumulation and surface deposition [3]. A relatively new analytical investigation performed by researchers have shown that dusts and heavy materials that are the consequences of hydrocarbons could be the result of different kinds of dirt accumulation such as dry and humid depositions.