With the rapid popularization of intelligent two-wheeled vehicles,the instrument of two-wheeled vehicles is no longer just a simple speed and electricity display window,but the core carrier of vehicle interaction and network management.RAMSUN introduced a two-wheeled vehicle instrument scheme based on AC8117,which simplified the peripheral materials by relying on the highly integrated design of a single chip,helped the scheme provider and the vehicle manufacturer shorten the development cycle,balanced the product performance and manufacturing cost,and adapted to the mass production demand of a new generation of intelligent electric motorcycles and electric bicycles.
1.Overview of Instrument Scheme for Two-wheeled Vehicle
AC8117,a two-wheeled vehicle instrument scheme,integrates 4G Cat.1,2.4GHz Wi-Fi and Bluetooth 5.2(BR/EDR+BLE)on chip.4G is native support,OTA remote upgrade,remote vehicle control and remote diagnosis are directly completed by the chip,eliminating external modules,supporting power supply and antenna matching circuit.Bluetooth covers music,calling,unlocking and screen projection,and a BT module can be added to the helmet interconnection.
2.the performance of two-wheeled vehicle instrument scheme
The storage of AC8117 chip adopts SIP package DDR and main control seal,which saves external storage module.For the compact instrument back shell,not only the layout area is saved,but also the wiring and EMC debugging time.
The display end of the instrument scheme of the two-wheeled vehicle supports MIPI-DSI and QSPI interface,and the resolution of 5 inches is 800×480.This specification can fully carry the main interface and driving data,and avoid the rising cost of screen and backlight caused by high resolution,which is a pragmatic balance between the amount of information and the price of the whole machine
Multi-line analog signals,CAN bus and one-line communication protocol are all supported,and different brands of electrical architectures do not need additional conversion boards.Basic functions such as the main interface of the second-wheel vehicle instrument,the local upgrade of U disk and SD card are already available,and resources such as UART,I2C,SPI,PWM,SDIO and USB are reserved.
The working temperature of AC8117 chip is-40℃to 85℃,and BGA325 package can adapt to the vibration and temperature difference of the whole vehicle.On the platform of the same two-wheeled vehicle instrument scheme,RAMSUN also has AC8215E/17E for 3D special effects and MH24xx with cost priority,which constitutes a gradient from foundation to intelligent interconnection.For more details of the two-wheeled vehicle scheme,please call RAMSUN.
Keywords: Two-wheeled vehicle scheme
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