| Summary: | 碩士 === 國立彰化師範大學 === 機電工程學系 === 94 === In this thesis, the technology of laser ranger is researched. Its square structure, the structure of the circuit and patent of selling products are analyzed. According to others' design concept, we design different electronic system structure. Certainly have reverse project of selling products of the city to be studied, and set up the laser ranger which we will design a whole design structure chart. The laser driver circuit and direct mixer circuit are simulated that using Orcad. Continuous wave (CW) laser ranger of electronic circuit is designed. It is researched about conventions mixer replace with direct mixer.
The CW laser distance finding of precision is improved for using the superheterodyne theory. Using A twofold modulation frequency laser driver system raised as laser ranger technology of most measurement distance, and it do not the precision. All these are for value and performance of improving the products. In the thesis, the direct mixer is researched. The direct mixer is the photoelectric mixer. It is one which utilizes function summation for one kind that mixes wave technology. We simulate the direct mixer circuit which gets the suitable value of simulation, then experiment the circuit. It is proved that the feasibility of the circuit, and set up the work for follow-up research.
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