4 results about "Fracture prevention" patented technology

This invention provides an information processing device, an information processing method, and a program that provide users with useful information on fracture risk. [Solution] The program is a program that causes a computer to function as an information processing device that supports fracture prevention, the information processing device comprising: prediction means for predicting the fracture risk of each of the multiple subjects from the health information of the multiple subjects; and selection means for selecting subjects for fracture prevention based on the fracture risk of the multiple subjects.

The application discloses a shield tunnel advanced water detection device and method based on an Ag / AgCl electrode, which comprises a water detection sensor arranged on a shield machine cutter disc spoke, the water detection sensor comprising an Ag / AgCl electrode and a wire connected with the Ag / AgCl electrode, and being used for measuring the soil potential difference at a shield tunnel face in a shield machine tunneling process; a water detection sensor protective sleeve covering the outer periphery of the Ag / AgCl electrode and being installed on the shield machine cutter disc spoke, and being used for preventing the broken rock in the soil from damaging the water detection sensor in the shield machine tunneling process; a kink and fracture prevention mechanism connected with the wire connected with the Ag / AgCl electrode, and being used for preventing the wire from being wound or knotted due to rotation in the shield machine cutter disc rotating tunneling process; and a data monitoring and early warning device connected with the Ag / AgCl electrode through the wire, and being used for collecting and analyzing the measured data. The application can predict the distribution and content of water in front of the shield tunnel face, thereby providing reliable technical guidance and prediction.

This invention discloses a screw fracture prevention method based on vibration testing of wall-mounted products, comprising: selecting screws that meet predetermined standards; using an accelerometer to monitor the vibration value at the installation point of the wall-mounted equipment in real time; adjusting the input control of the test bench; conducting a pre-test before the formal test, and then tightening the screws a second time after the pre-test; during the formal test, monitoring the root mean square value of acceleration or the peak value of the time-domain signal at the equipment installation point in real time, judging the screw fracture risk based on the root mean square value of acceleration or the peak value of the time-domain signal, and terminating the test when a fracture risk is detected. By adjusting the input control of the test bench, the vibration input level is controlled to prevent overtesting, reducing the risk of screw fracture due to vibration overload from the source. Pre-testing and secondary tightening eliminate preload loss, reduce the risk of stress concentration, and improve the uniformity and stability of preload. This achieves early warning of fracture risk, gaining time for downtime and loss mitigation.

The application relates to the technical field of wire fracture prevention, in particular to a fracture prevention method and system for copper-coated steel wire stretching, which comprises the following steps: constructing a continuous state parameter sequence, extracting a stress transfer amount, a resistance release amount and a recovery delay amount based on the continuous state parameter sequence, and reconstructing a stress mapping sequence based on the stress transfer amount, the resistance release amount and the recovery delay amount; establishing a normal stretching fluctuation boundary and an abnormal accumulation boundary, obtaining a deviation value at a continuous sampling moment, comparing and analyzing the deviation value with the normal stretching fluctuation boundary and the abnormal accumulation boundary, and forming a fracture risk judgment result; and performing hierarchical control on the stretching speed in combination with the fracture risk judgment result. The application can reduce the risk accumulation state in advance before a high fracture risk is formed, so that the fracture probability is reduced, and the stability and continuity of the stretching production process are improved.