As the taxi industry development, urban taxi industry is an important component of the traffic, strengthening management and the reduction of trade disputes with passengers proceeding to SCM smart taxi at the core of the development on the pricing system is particularly important.
Taximeter traditional function is not perfect, bring revenue to the state a great deal of difficulty, have a very serious tax evasion. But now, Multi-function meter have Storage and memory function. Accounts every day at a glance, and have a good solution to this problem, but also to facilitate the management of the taxi industry.
As the development of electronic technology, taximeter technology has been progress and improving. In our country, Taximeter has gone through four stages of the development, from the traditional mechanical components of all mechanical components, to semi-electronic electronic circuits used instead of mechanical components Taximeter, and from the integrated circuit type to the current single-chip system design Taximeter.
This design uses 89 S51 MCU-based controller, to A44E Hall sensor location, and the taxi-pricing design and realization of the system used AT24C02 Power-down price and the time saved time and other information systems, output by paragraph 8 of the digital display. of the circuit design of the meter can not only achieve the basic pricing, but also based on the day, night, waiting for the half-way to regulate the price, but not accounted for in the time for the drivers but also as a clock Comrade convenience.
Key words: 89S51, A44E Hall sensor, AT24C02
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