Abstract: Mine sprinkler is an important equipment for dust suppression, cooling and road cleaning in open-pit mine area, which plays a key role in improving the working environment and reducing dust pollution in mining area. However, the sprinkler in the operation process is easy to spray the site staff, affecting the normal production activities. At present, although the pedestrian detection technology is developing rapidly, there is no intelligent perception system for the special working environment of the mine sprinkler. In addition, the existing sprinkler system mainly relies on the driver to manually adjust the sprinkler range, the control accuracy is low, and frequent operation may distract the driver's attention and increase safety risks. Aiming at the problems of false spraying workers, waste of water resources, small ranging range and poor anti-interference of the existing infrared ranging system in the dust reduction of the sprinkler truck in the mining operation of open-pit mine, in this paper, an improved anti-splashing system of mine sprinkler is proposed. Traditional infrared ranging technology is limited in scope and susceptible to interference, resulting in frequent misidentification, affecting water spraying efficiency and driving safety. By optimizing the ranging technology, this system can accurately identify personnel and equipment and avoid accidental spraying. At the same time, combined with the automatic control mechanism, it can reduce the drivers' manual operational burden and enhances operational safety. Field implementation demonstrates its efficacy in mitigating dust concentrations, conserving water resources and optimizing the working conditions of mining sites.