Small electronic weighing system based on single-chip microcomputer

The invention discloses a small electronic weighing system based on a single-chip microcomputer. The small electronic weighing system comprises a display module, an A/D conversion module and a communication module which are connected with a single-chip microcomputer master controller. The A/D conversion module is connected with a pressure sensing module. The maximum output voltage of the pressure sensing module is 7-14mV. A conditioning circuit is connected between the A/D conversion module and the pressure sensing module. The display module is used for displaying weight information and fault information. The single-chip microcomputer master controller is also connected with an alarm module which is used for performing sound-light alarm when data acquired by the pressure sensing module is higher than a threshold or a fault occurs. The communication module is connected with an upper computer through wired or wireless connection and used for data transmission. The system is simple in structure, convenient to use and high in precision, and can meet weighing of small measuring range and can perform display of measured data information, weight overload alarm and long-distance data transmission.