Abstract:

There are several important links in live fish transportation, among which, transferring fish body from water to long-distance transport vehicle would directly affect fish survival rate and economic benefits. During live fish transportation, the measurement process was cumbersome and time consuming. It was also hard to change and retrieve the data. In order to solve these problems, an automatic measurement system with 3 sigma statistical principle and concept of software filter was designed to control the mechanical device directly, implement software filter and move average treatment to the data transmitted from electronic scale. The data with statistical and query functions was stored in database. The system could monitor the whole process of transshipment. Final results showed that after using this system, the labor costs was reduced to 28%, transport time decreased averagely to 50%, and weighing error was controlled within 0.5%. The automatic reform effect was remarkable and users satisfactory level was high.

Key words: live fish transportation, 3 sigma, software filter, database

摘要： 活鱼转运的各个环节中，鱼体从水中到长途运输车之间的转运计量过程会直接影响鱼的存活率和经济效益，针对活鱼转运过程中的计量过程繁琐、耗时长、称重误差大、数据更改与检索困难等难题，利用3 sigma统计原则和软件滤波概念设计了一种自动计量系统，该软件系统与自动转运电控机械装置无缝衔接，对台秤传送的重量数据实施软件滤波和移动平均处理，利用数据库完成了称重数据的统计与存储查询，该系统可以对整个转运计量过程实施全自动监控，最终结果显示，利用此系统后人工投入成本下降至28%，转运耗时平均下降至50%，称量误差控制在0.5%以内，自动化改造效果显著，用户满意度高。

关键词: 活鱼转运, 3 sigma, 软件滤波, 数据库