公开(公告)号：KR100270500B1

公开(公告)日：2000-12-01

申请号：KR1019970062353

申请日：1997-11-24

Applicant: 대한민국(농촌진흥청장) ,  동양산전 주식회사

Inventor： 김형준 ,  권영삼 ,  남윤일 ,  우영회

IPC: A01G31/00

Abstract: PURPOSE: Provided is a system for supplying adjusted amount of nutrient solution to a culture area divided into parts automatically according to preset EC(electric conductivity) and pH of each area, which can cultivate crops at a plurality of culture medium at the same time and be programmed as needed. CONSTITUTION: The system comprises a mixing tank(10), a liquid fertilizer mixing device(50) providing a plurality of ingredients of the fertilizer to the mixing tank, a sensor sensing EC, pH and temperature of nutrient solution circulated in a circular tube body(11) diverged from the mixing tank, a nutrient solution supply motor(60) supplying the solution in the tank to a greenhouse, a display part(30) for indicating each EC and pH of supplied to each culture area and inputting EC and pH data chosen by users, and a PLC(programmable logic controller) controlling each part for adjusting the nutrient solution to make the EC and pH data of each culture area input from the display part be corresponded to EC and pH data input from the sensor. The PLC(20) is composed of an outside contact sensing part input with a water amount sensing signal of the greenhouse, an insolation sensor, a real time plug part providing time data, a data memory storing the data, a microprocessor controlling the EC and pH data of each culture area, a signal input and output controller and an output part for supplying the solution by operating the supply motor by the control signal.

Abstract translation: 目的：提供根据预设的EC（电导率）和每个区域的pH值自动分配到部分的培养区域中调整量的营养液的系统，其可以同时在多种培养基上培养作物， 根据需要进行编程。 构成：系统包括混合罐（10），液体肥料混合装置（50），其向混合罐提供肥料的多个成分，感测EC，pH和温度的循环在圆管体中的营养液 （11）从所述混合罐分离出供应电动机（60），所述营养液供给马达（60）将所述罐中的溶液供应到温室，显示部（30），用于指示供应到每个培养区的每个EC和pH，并输入EC和pH 用户选择的数据，以及控制每个部件以调节营养液的PLC（可编程逻辑控制器），使得从显示部分输入的每个培养区域的EC和pH数据对应于从传感器输入的EC和pH数据。 PLC（20）由外部接触检测部分输入温室的水量检测信号，日照传感器，提供时间数据的实时插头部分，存储数据的数据存储器，控制EC的微处理器和 每个培养区的pH数据，信号输入和输出控制器以及通过控制信号操作供应电机来供给溶液的输出部分。