The invention belongs to the field of
teaching simulation, and particularly discloses an interventional
nursing teaching simulation system based on multi-
modal interaction, which comprises an organization
simulation module, a multi-
modal interaction module and an operation
track analysis module. According to the scheme, through a biomechanical
simulation method based on position dynamics and a multi-constraint mechanism, superficial
fascia is subjected to two-stage
solver, distance keeping constraint,
dihedral angle constraint and linear and angular damping force modeling, and IMA blood vessels are subjected to combination of high-rigidity distance constraint and low-rigidity
dihedral angle constraint and a high-
low resolution grid
balance strategy; the
normal resistance and the tangential resistance are used for constructing multi-dimensional tactile feedback force, and accurate reduction of mechanical properties of different human tissues is achieved; through a
deep learning algorithm, hyper-parameters are optimized through grid search, evaluation indexes are calculated through a
weighted average method, the significance is verified by comparing frame number differences of
simulation operation and standard operation in all stages and combining independent sample t
verification, and a complete quantification
system of operation track evaluation is constructed.