CAJ | 학술논문

针对当前液态施肥机在液肥的精确及定量控制等方面存在的不足，以单片机作为控制核心，采用投入式液位传感器进行数据采集，将液位的变化转换成电压变化，再利用 A／D 将模拟量转化成数字量；同时，通过单片机处理将电压值换算成相应的液位高度值及容量值并显示，并用 MatLab 分析试验数据。结果表明：液位高度值各容量值测量误差均满足实际要求，可应用于液态施肥机。
침대당전액태시비궤재액비적정학급정량공제등방면존재적불족，이단편궤작위공제핵심，채용투입식액위전감기진행수거채집，장액위적변화전환성전압변화，재이용 A／D 장모의량전화성수자량；동시，통과단편궤처리장전압치환산성상응적액위고도치급용량치병현시，병용 MatLab 분석시험수거。결과표명：액위고도치각용량치측량오차균만족실제요구，가응용우액태시비궤。
Aiming at the shortage of liquid fertilizer in agricultural machinery currently, liquid fertilizer precise, quantita-tive control is one of the limiting factors.This paper takes the microcontroller as the control core, using input liquid level to acquire data sensor, convert changed liquid level into voltage variation, then use A/D transform analog quantity into digital quantity, at the same time, processing through the MCU to convert voltage values into the corresponding capacity value and display.Finally using MATLAB analysis of test data, the results show that the measuring capacity value and the height of liquid level value error are concerned with the container, but the error meets the actual requirements, can be applied to the liquid fertilizer applicator.