Using VXI Bus Technology to Build General Automatic Test System for Electronic Equipment
1 Introduction With the widespread use of modern electronic technology in weapon systems, our military ’s electronic equipment has undergone many new changes in terms of the complexity, degree and support mode of the digital scene technology. The complexity increases as the combat performance increases. The role and status in the maintenance of electronic equipment has become more and more important, and its advanced technical performance has become an important indicator of the level of modernization of equipment maintenance. In order to realize the comprehensive detection of electronic equipment, as well as the individual automatic detection and fault diagnosis of the sub-system, the equipment detection and maintenance equipment will be developed in the direction of universal standardization and modularization, and the comprehensive support capability of the equipment will be comprehensively improved. The combination and replacement of the corresponding test software is to adapt to the general purpose of a variety of flame throwing weapon systems and the general strategic goal of winning local wars under high-tech conditions. To this end, our institute launched the development of a general automatic test system for a certain type of electronic equipment. 2 The hardware composition of the general automatic test system for electronic equipment The general automatic test system for electronic equipment adopts the world's fully open flying 1 bus standard. It integrates various advanced test and diagnostic technologies of card-type instruments 488 program-controlled instruments. It has automatic performance. The comprehensive test system for testing and fault diagnosis can be used for electronic performance testing and functional performance test of special parameters of Shantou parameter measurement and diagnostics. Can locate the fault to the child device or the whole piece. Program-controlled integrated power supply Multi-channel AC-DC flow-controlled power supply is from 21 card-type instrument 4 program-controlled integrated power supply 5 universal adapter electronic equipment under test 3018 independent instrument 6-process screw 8 data recorder 1 to 1 person, 1 VCD 1 ancient, male, Hebei Tangshan people, engineers, are responsible for the research and development of it to cover all the requirements of the Army's Tunzi equipment for individual testing. Designed with 1 488 interface. Program-controlled, 08 data automatic admission instrument is self-developed equipment, which can record data of any node inside the printed board. The computer can control the probe through the melon 488 interface bus, dynamically locate the measured point, and record the signal of the tested point. In order to take into account different 0 tests, try to reduce the dedicated connection of +1 test, and set up a universal adapter. For different 01, only need to connect a special cable to carry out the dynamic test. 3 The basic environment of the software of the electronic equipment general automatic test system is your review 395 and. 5 words for programming and 0+ Chinese platform are Chinese stars. In addition to the functions of traditional languages, it also provides a large number of advanced analysis libraries for numerical analysis signal processing. The system software has main functions such as performance measurement, fault diagnosis, general measurement information display and so on. The system software consists of 2 automatic performance tests to judge the tested parts according to the established information database. The manual performance test provides users with performance indicators and some special performances, which are called measurement instrument test and 7 methods of testing, etc., guidance; perform performance tests according to test requirements. Automatic fault diagnosis is based on program-controlled, 6-data automatic recorder, and the value is based on the diagnosis and recognition of the database. Therefore, the Bianbian code method is implemented to prevent and detect the faulty part of the mountain. Expert-assisted diagnosis is mainly aimed at some individual test pieces that cannot be penetrated by the data recorder. With the help of manual auxiliary probes, expert diagnosis knowledge bases, and human-machine dialogue, expert-assisted diagnosis is performed on the failure of the test pieces. Identify the measurement package analog parameters and integrated circuit test analog parameters measurement Shu 1 with the near equipment to complete the series of analog equipment, digital measurement, digital integrated circuit testing using digital modules, through the test fixture to complete the online test of integrated circuit chips . The information display provides the electrical principle of the device under test, the printed board test system, the software performance test, the failure test, the general tester information display test process, etc. The relevant information of the components is attached to the printed board for manual measurement and reference. 4 Features of the General Automatic Test System for Electronic Equipment The system is a comprehensive test system that integrates performance testing and automatic fault diagnosis of Shanghai Huxi. Its technology is complex. Research is difficult. It has its uniqueness in solving the problems of restricting the generalization of test system automation and low detection efficiency. The system has the following main features: strong system versatility, high degree of automation, system 1 card instrument and discrete instrument, Tai is a measuring instrument with high degree of automation, and also self-developed program-controlled multi-channel AC and DC Tuning source and Cheng 6 The data auto-recording instruments are equipped with positive-watt 488 interface, and they are also highly versatile and have a high degree of automation. Tunyuan Guang 1 process control can output 14 channels at the same time, and cross flow control can output 8 channels at the same time. Programmable power supply is characterized by a wide range of output voltages and a full range of screwing; it can carry out iterative detection of the output electric current, with good undervoltage, overvoltage, overcurrent and short circuit protection functions; there are automatic and dynamic Working mode; Xianjie contains 488.2 standard; equipped with soft panel and training program, can be used with 4 kinds of test equipment. It can cover the current power supply requirements of all electronic equipment monomer combination tests. The program-controlled factory data automatic recording instrument is a high-speed digital data acquisition device for solving the test object 1 female dig sampled 4 towels universal digital program-controlled. Its purpose is to obtain the electrical signal of the tested point to the protective layer of the tested board under the control of the computer. For test analysis. Adopt the old 488 bus computer control technology, high density stepper motor technology and international popular commands. Program-controlled 01; digital digging, dynamic secretion instrument is suitable for data sampling of any printed board. The maximum positioning range is 4203001 Stomach 2, and a universal data acquisition instrument can measure the signal of any node on the printed board at any time. Greatly improve the level of product automation. It also has a phase 4 high positioning accuracy. The positioning accuracy is 15 and the repeating accuracy is 0.2. The speed of exploration and the total number of data letters increase the detection efficiency. Its composition box 3. Because the test system has two basic skills for performance testing and fault diagnosis of the single unit combination of general electronic equipment and printed circuit boards 1994, 2015, 18, 18, 1, 1 and 6, 6, this is a postal ship. Into 1 Bi, Caihu composition, pool. Mail considered. It is a universal conversion device, mainly for establishing a universal signal connection power supply excitation and communication method between the test instrument and the test object, and is the bridge between the test object and the test system. It includes two interfaces: automatic test and manual test. The universal adapter enables the universal human to meet the needs of different equipment and different tests. The system has complete functions and simple operation, which is suitable for troops. The system has many functions such as performance test function test, fault diagnosis expert, auxiliary diagnosis, auxiliary development and display printing; the software interface is friendly and the development function is perfect. The software has designed a universal test platform, which can work under multiple tasks, complete various data exchanges for performance test function test and fault diagnosis, provides a rich graphical interface, and is intuitive and convenient to operate, which is suitable for military use. The system diagnosis method is comprehensive and fast. The system diagnosis methods include automatic fault diagnosis and expert-assisted diagnosis. Namely, there are fault dictionary method based on 8-data automatic recorder, expert assistant diagnosis method based on expert experience and digital circuit test diagnosis analysis method based on digital 10 modules. The analog circuit test uses the 08 data recorder to sample data, and the computer provides diagnostic results through diagnostic analysis; the digital circuit test uses the 08 data recorder and the integrated circuit test clip to complete the data collection and analysis; for the mixed analog and digital circuit synthesis The above two methods collect and analyze data. For the DUT that cannot be fixed on the admission instrument, manual auxiliary probes are used to collect data, and expert-assisted diagnosis is used to complete the diagnosis and analysis. The system diagnosis method is comprehensive and the diagnosis speed is fast. The system uses bus technology, modular structure, flexible and convenient to build. 5 Basic evaluation The system has always been based on the VXI bus and the basis of universal automation, from the design of the overall design idea to the selection of the technical equipment and the development of the software program. Innovative design of program control, 6 data automatic recording instrument and universal adapter, supplemented by multi-channel AC-DC flow control power supply, established a universal hardware test platform, breaking through the universal sampling of human data automatic sampling using multiple fault detection and diagnosis methods The detection efficiency shortens the detection and maintenance time of the electronic equipment system, and reaches a higher software test development platform for the test process. It has a higher degree of generalization, is easy for users to develop, and is easy to operate. The system can replace the current equipment equipped in the inspection and repair shelter. Continued on page 20, including demodulating the ruler 1 person or ruler or converting the received binary data. The 463 data processing display module completes the background display and has an automatic shift function. The multi-target real-time track display module completes the real-time track display function of more than 68 target measurement information on the same ground background, including displaying the track of multiple targets in real time, and distinguishing the track of each target. The post-playback module has a post-playback function for the recorded data, which can reproduce the flight path after the event. Ball coordinate information can be obtained through post-playback. Auxiliary function module has functions such as real-time or post-traffic clear screen change, changing the target, changing the aerial display speed, and so on. 3.2.2.3 Software module relationship Software module relationship 6. 4 Conclusion The rapid development of the Global Positioning System 03 has aroused widespread concern in the military departments and civilian departments of various countries. Applying 03 technology to real-time measurement and monitoring of multi-targets in the air has extremely broad application prospects for navigation and positioning services. Perform necessary processing on the obtained 03 information, including converting 03 time to Beijing standard time, and converting the longitude and latitude elevation in the 0384 system to the distance azimuth angle of the spherical coordinate system. At the same time, the processed 03 data is displayed in the dialog box. Background display module 1 week Zhong Mo, etc. 015 satellite measurement principle and application. Surveying and Mapping Publishing 2 Liu Jiyu, etc. Principles and applications of global positioning systems. Surveying and Mapping Publishing Led Wall Washer Light,Led New Wash Wall Lights,Led Wall Lights Indoor,Indoor Led Wall Washer Light t-smartlight , https://www.t-smartlight.com