门禁系统故障勘察常用方法和必备工具.doc

门禁系统故障勘察常用方法和必备工具 Standing tools A multimeter Uses: to measure whether the voltage is normal, whether the circuit is short circuited or broken. Prepare a set of spare equipment that is indeed available: 485 and TCP communication mode controller each set ID and IC card reader each ID card, IC card, each card An electric lock, a 485 converter, one Standard power supply (12V, 5A or more) one Purpose: replacement test Small flathead screwdriver Application: remove the line of the terminal. It is too big to disassemble. Strong cross screwdriver Use: disassemble controller board, case, power supply and so on. Notebook computer： Request with serial port or with USB serial port converter, with network port. Uses: compare, exclude, test, eliminate client computer failures or problems with operating systems. Network hub HUB: (two or three do crystal head straight network cable) Build a small LAN environment test, TCP controller communication problems exist. Test pencil： Does the computer and controller case leak electricity?. The live wire position of alternating current. 120 ohm termination resistor: The anti-interference ability of 485 lines is improved in some special occasions. Just take a few, not very often. Walkie-talkie： On some different floors, two people are required to observe faults and general use of the trench. Not necessary, you can use mobile phones instead. common method Software testing method: [detection] method: Start the management software, enter the console] [general selected faulty door. Then click [] detection, software operation information will prompt the relevant fault, then according to the relevant fault handling. For example: the software set up some advanced settings. For example the multicard open set in the users do not know the circumstances, resulting in not credit card to open the door [method]: real-time monitoring [general] were selected in the console [monitoring] Real time monitoring corresponding to the credit card indicator light, e