|
|
|
| Program design of pump experiment non-collected data display based on LabVIEW |
| WEN Huizhi, TANG Yue, TANG Lingdi* |
| National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
|
|
|
|
Abstract In order to solve the problem of inconvenient reading and low reading accuracy of non-collected data in pump experiment, and realize a seamless display of non-collected data, a non-collected data tracking display program of pump performance curve was designed based on LabVIEW, a virtual instrument software development platform. By using ″generalized polynomial fitting″ control and the least square fitting method, the polynomial equations of flow-head, flow-efficiency and flow-power fitting curve were obtained. By adding the event branch of ″mouse movement″ in the performance curve in the ″event structure″, the coordinate value generated by each movement of mouse in the performance curve was refreshed; the flow data corresponding to the new mouse position coordinates were brought into the fitting curve equation to calculate the new head, efficiency and power value of the current flow value. The display format of the performance data value displayed at the mouse position was adjusted to make it display in the set format at the mouse position. The results show that when the mouse moves in the pump performance curve, the program can accurately track the mouse position, and show the flow, head, efficiency and power values corresponding to the the mouse position. In practical application, it is very convenient for tester to read non-collected point data from the performance curve.
|
|
Received: 18 May 2019
|
|
|
|
|
|
|
