Aiming at the disadvantages of inconvenient detection

high installation cost and less voice content of the elevator voice prompt system on the market at present

an intelligent voice prompt system for elevator based on JY901 B attitude sensor and Raspberry Pi is designed. The data collected by embedded system is processed by median filtering algorithm

and then the difference of air pressure change is transformed into altitude to calculate the floor height

so the problem of temperature drift is avoided. Meanwhile

the relationship between standard air pressure and altitude is improved

and the optimized algorithm model with small error and fast speed is deduced.The detection accuracy of voice prompt system is realized. The experimental results show that the system has the advantages of simple structure

small volume

high precision and intelligence

and the detection error is less than0. 5 m

accuracy of floor detection is high. It makes up for the shortage of voice station announcer in the industry.