基于单片机系统和生物阻抗的鱼体贮藏方式检测技术

针对鱼体贮藏方式(冰鲜与冷冻)鉴别问题,提出一种基于单片机系统和生物阻抗的鱼体贮藏方式快速检测技术,并测试分析了冰鲜和解冻的鲫鱼、鲤鱼在信号频率为1 kHz和16 kHz时的阻抗相对变化率.结果表明,冰鲜鱼的阻抗相对变化率大于100％,而解冻鱼的阻抗相对变化率小于100％.利用Arduino单片机系统、定值电阻和高频交...

Detection Technology for Fish Storage Method Based on Single-chip Computer System and Biological Impedance

In order to solve the problem of identification of fish storage methods (chilled and frozen), a technique for rapid detection of fish storage methods was proposed based on a single-chip computer system and biological impedance. The relative changing rate of impedance of chilled and thawed crucian and carp at the signal frequency of 1kHz and 16kHz was measured and analyzed. The results showed that the relative changing rate of impedance of chilled fish was more than 100%, while the relative changing rate of impedance of thawed fish was less than 100%. Arduino microcontroller system, resistors and high frequency AC voltage sensors were used to build circuit detection system. Firstly, the fish was connected to the detection system and the voltage information across the resistor and the voltage information across the fish were obtained when the AC signal frequency was 1kHz and 16kHz, respectively. Then, the relative changing rate of the impedance of the fish body at the signal frequency of 1kHz and 16kHz was calculated. Finally, the relative changing rate of impedance was used to identify chilled fish and thawed fish, and the detection results was output on the display terminal. This technology had good performance, simple and convenient operation, no damage to the fish during the detection process, and the identification process was accurate and efficient, and the detection accuracy rate can reach 95%. This technology solved the problem of difficulty in identifying chilled fish and thawed fish, and provided a idea for the detection of fish storage methods.