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The braking performance of the car is the car safe driving is an important indicator , developed a programmable function , wide applicability , easy to operate hand-held , large data storage capacity of the non -contact vehicle braking performance test equipment , has an important The practical significance and application value . In this paper, the vehicle brake performance testing equipment status quo analysis and research , presented through the transformation , the use of optical navigation sensor dynamic vehicle braking process of displacement signal sampling and processing , through the appropriate algorithm to calculate the braking performance test the parameters in the development of a non-contact , free installation , easy-to-use vehicle braking performance test instruments . Optical navigation sensors have been widely used in the computer mouse , take advantage of its low- cost , resource-rich hardware and software technologies mature , the test data directly in the vehicle brake testing process will wirelessly uploaded to a general-purpose PC , using a high-level language development data processing and analysis procedures , simplify the system hardware and software development , reduce maintenance costs , the system is portable , easy to extend the new test functions . The detailed analysis of the optical navigation sensors , and transform their optical channels to study its feasibility used in automotive tachometer , to select related chips and circuits , test algorithms and software design , and achieved good results in the experiments .
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