| Although automobile testing technology has enormously improved than before, its development isn't balance. Its some aspects which people think of unimportant have been ignored. For instance, the detecting instrument of automobile altitude difference has vacancy at internal or overseas countries. This detecting instrument is designed aiming at the status. The detecting instrument of automobile altitude right-and-left difference of the paper has the characteristics of speediness and nicety. We can operate the scale to choose the first point on the body as long as there are definite distances between parking place and detecting instrument. Then press the RESET button, go round and round the scale to stated angles, make laser at another point, we can read the altitude difference between two points. The equipment has many excellences such as convenient operation, small cubage, little wasting power, etc. It is able to adapt requires of pint-sized and medium-sized checkpoints. The central contents of this paper:1. theory analysis of systemWe prove the study on the detecting instrument of automobile altitude difference is not only essential but also feasible from theoretically speaking, through analyzing the reason of appearing automobile altitude right-and-left difference and the influence of body's lurch on the using capability of automobile.2. machine design of systemWe designed secure flexible convenient machine system which can rapidly and exactly detect according to circumstance, temperature, humidity and the require of checkpoints .3. circuit control of systemIn this part, we designed the circuit diagram of testing system and control circuit of reset and scale's going up or down.4. demarcating of system and test-driveWe validate the system precision can satisfy testing require through the demarcating of system. At the same time, through testing the actual automobile, we testify the system has higher dependability and reliability.5. experiment analysisWe educed the testing gist through plentiful experiment and analyzing experiment data.The innovative side of the paper:The detecting instrument of automobile altitude difference can rapidly test the altitude difference of the body's right-and-left symmetrical points in the state of un-touching body. It can not only directly display testing data, but also automatic chain up and save testing result. At the same time, it can realize the function of contacting the network through serial port. |