The PC software design software design follows a modular and structured design method, and mainly performs functions such as parameter setting, data acquisition, display, storage, and readback. The system has the following characteristics: (1) 11 channels of data can be collected at the same time, and each test channel collects test signals through respective sensors. (2) It is capable of real-time data acquisition, display and storage, which is convenient for the experimenter to observe the relationship between load and strain. Before the data acquisition, set the relevant parameters, set the sampling mode, channel mode, sampling frequency, and then start the acquisition. The software front panel is shown in Figure 3. Data collection is the core part of the system. Because the data needs to be collected and displayed in real time, it may take a long time. In order to avoid conflicts with other software operations, software 瘫痪, using Labview multi-threading technology, different modules in the rear panel block diagram. Placed in different while loops, three loops are established according to the test requirements, which are front panel response, data acquisition, and data processing display loop. In order to avoid data duplication and loss, the Queue queue technology is used to communicate between each thread module, which acts as a data buffer. The queue is a first-in, first-out (FIFO) data structure. The most common application is in multi-threading. Data is transmitted between multiple VIs, and its buffer signal and system sensor function ensure that data is not lost, and the running speed between threads is also adjusted. The program establishes two queues: a data collection queue and a data processing queue, which are respectively an enumerated type and an array type. The main type of Tape Measure is Steel Tape, followed by fiber tape, which is the tape that everyone often sees. Many people say it is a cloth ruler, and there is also a waist measurement ruler (tailor ruler/clothing ruler belong to this category). In southern China and Hong Kong, the tape measure is usually referred to as a soft ruler or a pull ruler. The material is PVC plastic and glass fiber, which can prevent the tape from being stretched during use. 3M Tape Measure,Vintage Tape Measure,Cheap Tape Measure,Durable Steel Measuring Tape Henan Liangjin Tools Co.,Ltd , https://www.jtapemeasure.com