According to Korean media reports, when fire rescue is carried out in super high-rise buildings that cannot be reached by ladders, more and more firefighting technologies are combined with cutting-edge robot technologies such as drones. In dangerous fire scenes such as explosion, destruction, high temperature, and toxic gas, in order to effectively help firefighters suppress the fire and quickly rescue trapped people, more and more wearable robots are developed that can increase the muscle strength of firefighters. According to the news of the Korean Patent Office on November 8, in the last 10 years (2008-2017), the number of patents related to drones and robots for firefighting in South Korea has increased from 2 to 21, with an annual average rate of 29.9%. During 2008-2012, the number of applications for fire-fighting drones was zero. With the popularity of drones, it increased to 53 in 2013-2017, and fire-fighting robots increased from 17 to 30 in the same time period, an increase of 76.5%. In the past 10 years, there were 24 applications in the field of fire-fighting drones (45.3%), 17 individuals (32..1%), 12 institutes and universities (22.6%), and applications in the field of fire-fighting robots, There were 22 applications from enterprises (46.8%), 14 applications from individuals (29.8%), and 11 applications from research institutes and universities (23.4%), of which enterprises applied the most. Firefighting drones were applied to fire suppression in 29 applications (54.7%). %), 18 for fire detection (34%), 6 for rescue (11.3%). Fire fighting robots are used in 34 fire suppression (72.3%), 8 for fire monitoring and detection (17.0%) , 5 rescues (10.6%). Cho Sung-cheol, director of the Korea Patent Office, said, "The technologies of sensors, artificial intelligence and autonomous driving robots are developing. As the loading capacity of drones increases, the demand for drones and robots suitable for firefighting will continue to increase. The strengthening of industry-university-research cooperation requires patent licenses that ensure a competitive advantage in technology development and specialized markets in harsh fire scenes such as high temperature, smoke, and water immersion.â€
A solar Controller is an electronic device that controls the circulating pump in a solar hot water system to harvest as much heat as possible from the solar panels and protect the system from overheating.
Two kinds solar controller included:
1.PWM Controller
PWM stands for Pulse Width Modulation. PWM charge control devices can be explained as an electrical switch between batteries. The switch can be quickly switch on and switch off. Therefore, desired voltage can be obtained to charge the batteries. The charge current will be slowly decreased as the batteries charged.
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May 19, 2023