Laboratory fruit sample automatic weighing system

The invention discloses a laboratory fruit sample automatic weighing system which comprises a computer, a serial port line and a fruit sample weighing device, the computer is connected with the serial port line, the other end of the serial port line is connected with the fruit sample weighing device, the fruit sample weighing device obtains weight data of a fruit sample, the serial port line imports the data into a computer database, the fruit sample weighing device comprises an upper layer and a lower layer, a scale is arranged in the middle of the upper layer, the lower layer is a box body, a high-precision weighing sensor, a circuit, a battery, an HYD4216 buzzer, an A/D conversion module, an amplification filter and a power management module are arranged in the box body, a main control chip ATmeg328 serves as a controller of the circuit, and data are transmitted through a USB-to-RS232 serial port module. An automatic weighing APP is arranged on the computer, the APP is connected with the database, automati