The rapid development of modern industry and defense industry has made electronic measurement technology enter the stage of extensive use and comprehensive measurement. The on-site monitoring and testing equipment for large-scale equipment and systems is a new market. The core of the integrated test equipment consists of a multi-category, high-performance electronic measuring instrument cluster and computer, which emphasizes the application range of the user interface signals and the ability of the equipment to adapt to the harsh working environment. With the widespread use of large-scale integrated testing in equipment and systems, the demand for large-scale field test equipment will grow. The emergence of electronic measuring workstations just makes up for this vacancy, which can effectively solve the problem of equipment emergency repair. The electronic measuring workstation uses virtual instrument technology to combine computer, instrument hardware, computer software, etc. In addition to inheriting the existing functions of traditional instruments, it also adds many advanced functions that are not possible with traditional instruments. It has a high degree of flexibility and has broken through. Limitations in data processing, delivery, and storage. The USB interface has become the standard configuration of the PC, and it supports hot plugging and high data transfer rate. Based on NI's USB series data acquisition card and LabVIEW virtual instrument development platform, a portable integrated measurement system is built to measure the frequency and time domain parameters of the device, and complete the status detection and troubleshooting of the device. 1 virtual instrument 2 system design 2.2 System Components The electronic measurement workstation consists of two parts: hardware and software. The software part uses National Instruments' LabVIEW graphical programming software. The instrument driver completes the software program for controlling and communicating with a specific instrument, and the computer stores and analyzes the data. 2.3 System function The electronic measurement workstation uses the system synchronous control module as the circuit core to control the synchronization of each instrument and function module. In the measurement, the measurement target is connected to the corresponding instrument in the electronic measurement workstation through the measurement interface adapter to complete the transmission and measurement of the required signals, and the measurement data is processed by the computer to display the measurement data and images. The basic functions of the system are as follows: dual channel digital storage oscilloscope; dual channel FFT spectrum analyzer; 18 channel logic analyzer; digital multimeter, LCR universal bridge; frequency meter (microwave); 18 channel data model signal generator, arbitrary waveform Voltage source, current source signal generator, clock signal generator; adjustable DC regulated power supply, industrial frequency AC power supply. Kitchen Accessories,Kitchen Cabinet Accessories,Kitchen Board,Kitchen Supplies JIANGMEN MEIAO KITCHEN AND BATH CO.,LTD , https://www.meiaogroups.com
The virtual instrument refers to the computer as the hardware core platform, with the hardware of the corresponding test function as the signal input/output port, using the instrument development software to virtualize the panel and function buttons of the instrument on the computer, and operate the instrument through the mouse and the keyboard. The hardware uses a data acquisition card, and the user can virtualize any instrument with any function. The LabV-IEW software designed by National Instruments is a graphical programming environment that implements the concept of virtual instrumentation. Compared with traditional instruments, virtual instruments realize the intelligent, modular and diversified measuring instruments, have a fully automated testing process, and can be easily developed for secondary development at a lower cost.
2.1 Introduction to Electronic Measurement Workstation The electronic measurement workstation is a new type of measuring device that combines 15 kinds of electronic measuring instruments and computers. It is an important innovation in the field of electronic instruments. It has small size, easy to carry, strong and high temperature resistance. Anti-vibration, anti-shock, absolutely sealed waterproof, anti-corrosion, moisture-proof, dust-proof, especially its powerful instrument cluster comprehensive working ability, especially suitable for providing equipment with necessary repair platform in the harsh environment, emergency test and so on. The various instruments in the electronic measuring workstation can work synchronously to form a cluster of instruments for collaborative operations. It conforms to the current trend of diversification and integration of electronic measurement, and replaces traditional discrete desktop instruments in the form of workstations for the industrial and scientific communities. And the education industry provides a new type of electronic measuring equipment, which is fully functional, easy to use, versatile and cost-effective. Therefore, electronic measuring workstation products have the potential to become an important growth point in the field of electronic instruments. The basic characteristics of the electronic measuring workstation are as follows: Integrate the multi-channel, multi-function electronic measuring instrument cluster with the computer into a systematic electronic measuring device with large-scale integrated measuring capability; with standard target hardware adaptation interface; with standard target Software adaptation interface.
The hardware part is based on USB bus data acquisition card, equipped with corresponding auxiliary circuit module to complete signal acquisition and conversion. The module circuit has bidirectional digital signal adapter circuit, digital storage oscilloscope circuit, high speed sampling memory circuit, data model waveform memory circuit, arbitrary waveform voltage. Source signal generator circuit, voltage signal waveform memory circuit, arbitrary waveform current source signal generator circuit, current signal waveform memory circuit, multimeter circuit, DC stabilized power supply circuit, communication control module circuit.