Since micro invasive diagnosing devices came out

they have shown their potency in international medicine. But the positioning problem restrains development of the micro invasive devices. For this reason

the paper

aimed at gastrointestinal physiological parameters detecting capsule

designs a portable positioning system design for micro gastrointestinal invasive diagnosing devices

and details the operation principle

system configuration

positioning algorithm

and experiments in the article. The author makes the quasi-static magnetic field model computing magnetic flux density

and solutes the positioning equations based on the simulated annealing algorithm

so gets the good positioning effect. Based on the analysis of the experiment’s results

the portable positioning system for micro diagnosing devices has the benefits of high accuracy

low cost

no-harm to human

and freedom of users. Thus

the positioning system has great potential in medical application.