LabVIEW是一款基于圖形化編程的開發環境,主要針對測控領域,其編程方式獨特,相對于傳統文本編程更為直觀。LabVIEW一度在測控領域擁有較高市場份額,但隨著工業4.0、人工智能等新技術的發展,其市場份額逐漸下降。相比之下,Java作為一種跨平臺的通用編程語言,正在逐漸崛起。
LabVIEW示例程序: int main() { TaskHandle taskHandle = 0; int numReadings = 1000; int32_t read[numReadings]; DAQmxCreateTask("", &taskHandle); DAQmxCreateAIVoltageChan(taskHandle, "Dev1/ai0", "", DAQmx_Val_RSE, -5.0, 5.0, DAQmx_Val_Volts, nullptr); DAQmxCfgSampClkTiming(taskHandle, "", 1000.0, DAQmx_Val_Rising, DAQmx_Val_FiniteSamps, numReadings); DAQmxStartTask(taskHandle); DAQmxReadAnalogF64(taskHandle, numReadings, DAQmx_Val_WaitInfinitely, DAQmx_Val_GroupByChannel, read, numReadings, nullptr, nullptr); DAQmxStopTask(taskHandle); DAQmxClearTask(taskHandle); for (int i = 0; i < numReadings; i++) { std::cout << read[i] << std::endl; } return 0; }
Java示例程序: public class Main { public static void main(String[] args) { int numReadings = 1000; int[] read = new int[numReadings]; try { SerialPort port = SerialPort.getCommPort("/dev/ttyACM0"); port.openPort(); port.setBaudRate(9600); InputStream in = port.getInputStream(); int curPos = 0; while (curPos < numReadings) { read[curPos] = in.read(); curPos++; } port.closePort(); for (int i = 0; i < numReadings; i++) { System.out.println(read[i]); } } catch (SerialPortException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }
從示例代碼可以看出,LabVIEW主要用于控制測量設備,而Java更偏向于通用編程語言。隨著物聯網、智能家居等領域的發展,Java未來的發展前景將更加廣闊。