Design of a Portable Weighing Voice Quotation System Based on Single Chip Microcomputer

At present, most of the weighing systems also adopted the traditional mechanical weighing method, which did not have the function of voice broadcasting, low level of intelligence and poor interaction ability. Aiming at the difficulty of operation and poor interaction ability of traditional mechanical weighing system, a portable weighing voice quotation system based on single-chip microcomputer was proposed in this paper. AT89C51 single-chip microcomputer was used as the control core in the system, and HX711 weighing module and APR9600 voice control module were combined to realize real-time weighing, online display, unit price and quantity input, and voice quotation functions. The HX711 weighing module was adopt to realize real-time collection of weighing data, which was sent to AT89C51 single-chip microcomputer for processing after internal A/D conversion. A liquid crystal display was used to display the weighted data and the unit price, quantity and total price, and at the same time the APR9600 voice control module was driven for real-time voice broadcast. We had conducted a comprehensive test of the system. Experimental results showed that the system could realize the following functions, such as unit price input, weighing measurement, calculation, display, and voice broadcast functions. The system ran stably, cost-effectively, and could achieve the expected goals.