英语翻译
Control module includes a light-adjusting module and a switching module.In the light-adjusting module,TLC5615,a D/A chip,is adopted as the main chip of control module that can transform the digitized signals into analog control signals.In this system,the analog control signals have three control grades:all light mode,reducing light mode and half light mode.The analog voltage values of the three control grades are
5V,3.75V,2.5V.In switching module,for the
interface of electronic ballast has internal upper pulling,the way of switching control is open-collector (OC).The used circuits are shown in Fig.5.
Besides,the terminal controller has a function of collect status of road lighting equipment.When the test port is at high level,it shows that the equipment is in normal state and the low level stand for abnormal.
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