The hardware and software of camellia oil non-destructive detector based on ARM9 microprocessor is developed

hardware of the instrument is composed of near infrared（NIR）spectral acquisition module and ARM9-based embedded control system

and the NIR spectral acquisition module of the instrument includes apparatus light path

AD620 signal amplification and AD7705 A/D conversion circuit.Light path of the instrument is made up of NIR LED light source

narrow-band filter

Fresnel lens and photoelectric detector.Embedded control system uses cost-effective and low power consumption S3C2440A as the core

include Nand Flash

SDRAM

USB

UART

LCD display and touch screen peripherals

etc.At the same time

AD7705 driving program and system software design based on QT are completed by embedded Linux system

detection of camellia oil is achieved.Modeling and predicting for volume fraction of camellia oil are carried out

and the results show that the predicted volume fraction values and the actual volume fraction values can basically keep consistent.