2 results about "Abnormal material" patented technology

The invention relates to the technical field of dry quenching, in particular to a dry quenching abnormal material level judgment method which comprises the following steps: data loading and preprocessing: setting an abnormal detection threshold: calculating an abnormal upper limit value and an abnormal lower limit value based on statistical distribution of a coke loading rate; key parameters are initialized, wherein a backtracking step number threshold value and a material level abnormity judgment threshold value are set; and anomaly detection and classification: judging whether the coke loading rate exceeds an abnormal upper limit value or is lower than an abnormal lower limit value point by point from the latest time point to the front, and identifying an abnormal sequence, a material suspension phenomenon and a material collapse phenomenon according to a judgment result. The method has the advantages that the key parameters of the coke loading rate and the material level change rate are integrated, and the dynamic abnormal threshold value is set based on statistical distribution, so that false alarms caused by data noise of a single sensor and instantaneous interference are effectively reduced; and in combination with a reverse anomaly backtracking mechanism, an abnormal mode (such as material suspension and material collapse) with time sequence characteristics can be identified, the missing report is reduced, and the real anomaly capture capability is improved.

This application provides a material screening method, system, apparatus, equipment, and medium. The material screening method includes: performing image scanning processing on materials on a conveyor belt to obtain a test image; uploading the test image to a host computer for identification processing to receive an abnormal material rejection signal fed back by the host computer; responding to the abnormal material rejection signal, performing phase alignment processing between the current scanning sequence and the abnormal material rejection signal based on a synchronous clock to obtain an aligned abnormal material rejection signal; and rejecting abnormal materials according to the aligned abnormal material rejection signal. The material screening method of this application can directly control material screening using hardware, improving the accuracy and efficiency of material screening.