Public Transport Fare Collection, GPS Announcer, and Onboard Display System

I. GPS Announcer System

1. ‌Technical Principle‌
   Based on BeiDou/GPS satellite positioning technology, combined with Geographic Information System (GIS-T) and wireless communication (3G/4G/5G), the onboard terminal obtains real-time vehicle location information, dynamically calculates the distance to the next stop and estimated arrival time, and triggers voice announcements. Some systems support Text-to-Speech (TTS) technology, allowing flexible adjustment of announcement content and voice tone.

2. ‌Core Functions‌

   • ‌Automatic Announcement‌: Achieves precise stop detection (within 1-2 meters) using preset stop coordinates.
   • ‌Manual Announcement‌: Drivers can manually trigger announcements via the control panel.
   • ‌Video Monitoring‌: Integrated camera module supports real-time in-vehicle monitoring and event recording.
   • ‌Dispatching Management‌: Supports shift scheduling, speed limit alerts, and operational data logging.

3. ‌Hardware Configuration‌
   Typical devices include high-precision GPS modules (e.g., U-blox), 32-bit processors, LCD displays (3-inch color screens), HIFI-grade amplifiers, and multiple interface extensions (e.g., USB, CAN bus).

II. Fare Collection System

1. ‌Integration Method‌
   The fare collection machine typically connects to the announcer via reserved interfaces (e.g., RS232/485), supporting ISO/IEC 14443 Type A smart cards for fare payment and passenger flow data synchronization.

2. ‌Data Integration‌
   Fare collection records can be uploaded to the dispatching center for analyzing peak passenger flow and optimizing route schedules.

III. Onboard Display System

1. ‌Onboard Display Terminals‌

   • ‌Electronic Route Sign‌: LED or LCD screens display the route number, direction, and next stop information in real time, with some supporting full-color advertising playback.
   • ‌Information Screen‌: Embedded terminals can switch between camera feeds and dispatching instructions.

2. ‌Smart Bus Stop Displays‌
   Synchronize vehicle locations via wireless transmission, dynamically showing arrival times, crowding levels, and transfer recommendations. Some displays integrate solar power supply.

IV. Typical Application Cases

• ‌Jiaxing Pinghu Bus (Zhejiang)‌: Uses Hikvision integrated systems to link automatic announcements with fare collection.
• ‌Shenzhen Basitong System‌: Provides a full-chain solution including GPS announcers, passenger counters, and electronic bus stop displays.

V. Technical Standards and Scalability

• Complies with the Ministry of Transport's JT/T794-2011 onboard terminal technical requirements, supporting integration with passenger flow counters, advertising screens, and other devices.
• Some manufacturers offer customized development services, supporting SD card-based route data updates and software upgrades.