Simulation writing brush gesture measuring device on basis of MEMS

The invention relates to a simulation writing brush gesture measuring device on the basis of MEMS, and belongs to the technical field of virtual drawing. The simulation writing brush gesture measuring device comprises a MEMS inertia measuring unit, a microprocessor, wireless transmission equipment, and a battery; wherein the MEMS inertia measuring unit, the microprocessor, the wireless transmission equipment, and the battery are arranged in the pen-holder of the stimulation pen along the pen-holder direction; the MEMS inertia measuring unit is a gesture measuring unit, and connected to the microprocessor; and the microprocessor is a data processing unit, and connected to the wireless transmission equipment. A user uses the simulation writing brush to carry out virtual drawing on a laptop, when the simulation writing brush rotates around a vector in space, the measuring device directly outputs a quaternion which depicts the gesture change of the simulation writing brush, then a new gesture vector of the simula