Research And Design Of Automobile Sketch Multimeter

The automobile sketch multimeter is aimed at characteristic which include the smaller scale of automobile maintainability and repairability enterprise, in our country, and not quite well ability of professional technique level. But the intelligence examination instrument that we develope in addition to have function of common multimeter, also can measure the fire test function of automobile engine(amplitude of fire ,rotate speed and ratio of space occupying).This design with Single Chip Microcomputer for core, make use of the modern calculator technique and test technique, adopt the modularization and structurize to design method.This text thoroughly argue the action and technique schema of each function module of sketch multimeter, and carry out the method in a specific way.The software design all adopts C languages. The design of this system provided the comprehensive examination platform that technique for the car maintenance realm is advanced, the credibility is high, operation is simple, the physical volume is small and the cost is low. It plays an important role in the testing and repairing of automobile.Along with the fast development of calculator technique and large scale integration circuit, Single Chip Microcomputer technique and the test technique are more mature and were applied into more realms.The automobile sketch multimeter is one of the applications of the Single Chip Microcomputer technique and the test techniques, the test technique is the outcome which is the sensor technique and the fast developed calculator technique combined to, it represents the latest direction of the instrument development, having the good application and developing foreground. The main work of this thesis is to research and design the automobile sketch multimeter according to technical of the intelligence instrument.The thesis firstly introduces the constitution and characteristics of intelligence instrument, and the intelligence instrument technique, through the system analysis project and arguments, put forward the system design project of"high-speed MCU+ the appropriation A/ D+ parallel port communication". Then, around whole system project, the rest and each chapter carry on describe in a specific way with the design of the automobile sketch multimeter.