Turn according to the electronics type of a machine soon the design of the table of distance
Abstract
Introduce the realization scheme that one kind of new pattern electron baseding on the oneboard computer style motor vehicle rotates speed the odometer .Talk about mileage count rule and the rotation speed instruction rule .In view of the mechanical type odometer defect composition is complex ,The accuracy is not tall ,Moreover price is more dear ,Design the figure style motor vehicle rotation speed odometer .Takes AT89C2051's oneboard computer as the core here ,Utilize the SPI's serial bus to open up the electron style odometer .
That odometer utilizes the magnetism electricity style sensor sampling motor vehicle to ply the signal that obtains ;Adopt LCD's nixie light to display the motor vehicle invariably to ply the mileage figure ,This mileage is plucked E2PROM chip X5045 ,Utilize such circular telegram to adapt ,Mileage figure invariably that the distinguishing feature memory motor vehicle ply that ac dump message may be conserved .
It is easy that this the design rotation speed odometer havees the composition ,The accuracy is taller ,The error is littleer ,The display is clearly attracted attention ,The distinguishing feature such as steady dependablely and so on ,Besides software to that system also do the relevant directions.
