基于LabVIEW的汽车油罐车液位检测计量系统设计与实现

汽车油罐车容积计量检定的传统方法是采用人工丁字尺加显色液来测量液位空高，传统的人工计量检定方法效率低、安全系数低、成本高，人工读数的误差对测量精度带来很大的影响。设计了一种基于LabVIEW的高精度多通道汽车油罐车液位检测计量系统。首先通过设置系统的串口号和波特率，然后采用DRUCK PTX 1830液位传感器来对汽车油罐车的液位进行数据采集，经过滤波和复杂的算法处理，系统实时显示液位高度和液位变化曲线，从而达到高精度自动化计量检定汽车油罐车容积的目的。系统具有对汽车油罐车液位数据进行数据采集、算法处理、显示、存储、报警、上位机自动分析数据及导出Excle表格等功能。通过在实验室与现场实际测试，结果表明，该系统能有效准确的反应液位高度的变化，测量精度达到±1‰，具有一定的推广应用价值。

Design and implementation of liquid level of tank car detecting measurement system based on LabVIEW

Traditional methods of Tank Car Volume verification is the use of artificial color liquid plus T‐square to measure the level of empty high .Traditional manual method of verification being low efficiency ,low safety factor ,the high cost of human ,manual reading error caused a great impact on the measurement accuracy .A high precision and multi channel liquid level measurement system based on LabVIEW is designed .First ,through the serial port number and baud rate setting system ,and then use DRUCK PTX 1830 level sensor for data collection tanker car level ,after filtering and processing complex algorithms ,real‐time display system and liquid level height curve ,so as to achieve high‐precision automated verification of Tank car volume purposes .Tank car system level data for data acquisition , arithmetic processing ,display ,storage ,alarm ,PC automatically analyzes the data and export EXCLE forms and other functions .By actual laboratory and field test results show that the system is effective and accurate height change of the reaction liquid level measurement accuracy of ± 1 ‰ ,it has some promotional value .