Title: Control circuit for intelligent weighing sensor
Application Number: 200620068651 Application Date: 2006.01.20
Publication Number: 000000000 Publication Date:
Approval Pub. Date: 2007.01.31 Granted Pub. Date: 2007.01.31
International Classifi-cation: G01G3/142;G01G3/145
Applicant(s) Name: Mettler-Toledo (Changzhou) Weighing Equipment Syst Address:
Inventor(s) Name: Tian Feng;Dai Feng;Zhu Zijian
Attorney & Agent: jia haifen
Abstract:
    The utility model relates to control circuit of a smart weighing sensor, which consists of Wheatstone bridge, A/D conversion circuit, CPU processing circuit and power conversion circuit, and further reference signal circuit, signal switching circuit and ambient monitoring sensor. The Wheatstone bridge and the reference circuit are connected to the input terminal of A/D converter via the signal switching circuit, the output terminal of the A/D converter is connected to the input terminal of the CPU processing circuit, and the control output terminal of the CPU processing circuit is connected to the control input terminal of the signal switching circuit, the input terminal of the CPU processing circuit is further connected with ambient detection sensor, the output terminal of the CPU processing circuit is designed with serial port for communication with host computer and specialized port for connection with CAN transmitter. Either in dynamic or static status, it is characterized in that it could collect weight and temperature signals simultaneously, automatically detect the weighing sensor and A/D conversion circuit, together with high performance in communication.
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