Pole style solar e-sign of public transportation is an integrated innovation with technologies of satellite positioning, IoT, cloud computation, and intelligent sensing. With solar energy as power source, it utilizes low power embedded system as its core of intelligent control. A variety of communication techniques are used to transform the traditional bus stop sign. It tells passengers the positions of the nearest three buses with LED lights, providing prediction of bus arrivals and makes outings of citizens more convenient.

Features
1. accuracy: real-time, accurate and complete forecast of information at each bus stop, with automatic updates each 10 seconds and prediction error less than 15 seconds
2. bus stop location: high-accuracy positioning of stops with Beidou+GPS brings more convenience for later maintenance and renovation of stop signs
3. direct and clear: the existing bus stop signs are equipped with LED lights to realize real-time forecast of bus arrivals
4. remote maintenance: regular data collection from bus stops including voltage, temperature, security, lighting and connection status, with abnormality alerts and guarantee of long-time operation
5. backlight at night: the e-sign backlights are on during the night to keep visibility, also providing sense of safety for waiting passengers
6. easy to transplant: the whole system is easy to be transplanted to bus stops, hub stations, subway entrances, etc.
7. safety and reliability: requirements such as load, wind load, and installation solidity are satisfied from various aspects including design, transmission, and monitoring, to make sure all the e-signs are dirt-proof, rain-proof, safe and reliable
8. low energy consumption: its solar power could keep normal operation even in the circumstance that sunshine is lower than threshold of charging for continuous 7 days.

Cases of Application:
Pudong Public Transportation Corp: pole style solar e-signs of public transportation in the Pudong New District