光柱、数码仪表的控制与实现

Control and Implementation of Beam, Digital Instrument

USB接口已成为PC机必需的标准接口之一,光柱、数码管组合式仪表已成为国际上仪表显示方式的新潮流,系统采用USB与I2C混合控制总线,将系统分成USB接口电路,综合控制电路,显示控制电路三部分,USB接口电路实现PC机USB接口与下位机I2C设备的通信;综合控制电路实现控制实现信号采集,数据的计算、处理;显示控制电路实现对光柱、数码电路的控制驱动。从软、硬件两方面介绍了如何通过USB接口,实现光柱、数码显示器组合仪表的显示控制。

USB interface has become one of standard interfaces which is necessary to a PC machine,and beam,digital tube combined instrument has become a new trend of international instrument display mode.The system adopts USB and I2C mixed control bus which is divided into USB interface circuit,control circuit,and display control circuit.USB interface circuit realizes the communication of PC USB interface with the I2C equipment,and controls circuit to realize the acquisition of sign,data processing and calculation,and displays control circuit in order to control the beam,digital circuit.It was described how to implement the control of beam and digital display instrument cluster through the USB interface from two aspects of the software and the hardware.