Energy -conserving illumination control system

The utility model relates to an energy -conserving illumination control system, the system include the control unit, signal measurement unit, pulse shaping unit, lighting load, drive unit, light intensity translation unit, signal measurement unit, pulse shaping unit are connected with the control unit respectively, light intensity translation unit and pulse shaping unit are connected, the singlechip passes through drive unit control lighting load. Utilize the characteristics of university's classroom seat rotatable, installation limit switch below the seat, when unmanned the seat, limit switch is in the state of normally opening, when take, limit switch is closed, in the limit switch access signal measuring circuit, limit switch's disconnection and the closed height level output who just converts the circuit into, the singlechip by the high -low level that detects so that judge here seat whether someone, and then number in the count enable play classroom. Pyroelectric sensor measures human signal with the limit switch replacement, and simple reliable, the interference killing feature is strong, can exactly make statistics of the classroom number.