Lcd panels used on transportation means include car acoustic system , meters and instruments in car , motorcycle , power driven bicycle etc 所用液晶显示屏列入此类别的产品有：汽车音响汽车仪表盘摩托车仪表盘电动自行车仪表盘汽车防盗器出租车计价器等。
Experiments indicate that orientation module can provide different prices according to different area and execute reliability . so it is of comprehensive prospect and application value 经试验表明所研制的定位模块能够为出租车计价器根据不同的区域提供不同的计价标准，并且运行可靠，具有广泛的应用前景和使用价值。
When he throws the flag , the amount for the first part of the trip will appear on the meter , and then as you drive ( or stand still waiting for a red light ) the meter will click away , adding more and more money to your fare 当他放倒旗形牌时，起步费会显示在计价器上，然后随着车辆的行驶(或因红灯停车时) ，计价器也继续走动，你的车费会越来越多。
Orientation module with district - identification function for taximeter combine communication technology , electronic technology , computer technology , and design with scale integrated circuit . it is of high stability and reliability 具有区域识别功能出租车计价器车载定位模块采用通信技术、电子技术和计算机技术，应用大规模集成电路设计，性能稳定，可靠性高。
Based on whole design , this essay adopts gps technology to make the key component in taximeter - orientation module , compiles corresponding software , and makes adjustment and experiment . also it has done a profound research in district - identification arithmetic , that is improved radian arithmetic , and it is verified by matlab . we adopt anti - interference measures in both hardware and software to ensure communication reliability and working stability 在确定总体设计方案的基础上，本文采用gps技术研制具有区域识别功能出租车计价器中的关键部件? ?定位模块，编制了相应的运行软件，并进行了调试和试运行试验；对区域识别算法进行了深入研究，提出了区域识别的算法?改进弧长法，并运用matlab软件进行了算法验证；为了保证通信的可靠性和工作的稳定性，从软、硬件两个方面采取了抗干扰措施。
