Remote Monitoring of Operating Current and Voice Alarm of Bucket Elevator

At present, the remote monitoring function for the operating current of the bucket elevators in Zhangji Coal Preparation Plant has not been realized. When the load of the bucket elevator is too high, an overload is likely to occur. Handling such accidents is time-consuming and labor-intensive, with significant safety risks. In order to reduce the number of accidents and mitigate safety risks, this paper designs and implements the remote monitoring of the bucket elevator's operating current and an overload alarm protection function. We use an integrated intelligent motor protection device to collect the operating current of the 315~318 bucket elevators, convert it into a 4~20 mA DC signal, which is then transmitted to the analog input module and truly displayed on the host computer screen for dispatchers to monitor. When the operating current exceeds the set threshold, a voice alarm will remind the dispatcher to notify the jig operator to close the jig gate to prevent overloads. Practice has proved that when the bucket elevator's operating current is excessively high, this method can trigger a voice alarm and reduce the incidence of overload accidents.