| The missile is an important national defense weapon.Guidance and control system plays an important role to track missile's trajectory and damage target of the missile.Therefore,it is a prerequisite for ensuring the normal operation in the safety and reliability of the missile.As the electrical control device is difficult to measure by manufacture because a large number of control chips,relays,connecting lines.So,it is have a great significance to develop an automatic detection and control equipment.According to the internal structure of the electrical control device,the detection scheme of the Automatic test system is designed,and the control device detection platform is set up to achieve the expected test performance.In the hardware test,the product automatic detection and product continuity test functions are designed according to the requirements of the production customers.First of all,use industrial computer to communicate with the electrical control device with the1553 B communication bus,which send digital instructions to complete a series of action instructions and achieve the detection equipment and control devices interoperability.Second,designed data acquisition board,switch board,voltage conditioning circuit and digital isolation circuit,to achieve the 16 analog voltage for acquisition,196 digital and 56 road switch to measure of control device.Finally,use the single-chip to complete the product 356 conduction test.Among them,automatic test system has a channel switching function to switch the channel in different time.In the software,use the Lab Windows / CVI to achieve machine test function,Denso test function,self-test function,conduction detection function.Automatic testing,single-step testing,troubleshooting and prompting for errors are designed of the function.The digital and analog data display and signal control are output.The software program is versatile andmodular,simple and clear,so that the test workers can test product according to the prompts. |
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