Daily monitoring of the necessary tools for the access control system

The tools for daily monitoring of the access control system are very simple. A multimeter, a large, small, cross, a total of 4 screwdrivers, a diagonal pliers, a roll of tape, a soldering iron, and soldering are the diagnostics above the hardware. If the software above diagnostics, if you are a manufacturer, it will have a communication test program, at least with a U disk, recommended 2G. Prepare software, instructions, test procedures, and working software. If you have a condition to buy a notebook with a serial port or a USB-to-serial converter plus a notebook. Here's a brief description of common methods and necessary tools for fault detection of access control systems:

Standing Tools Multimeter

Uses: Measure the voltage is normal, whether the circuit is short circuit and open circuit.

Prepare a set of available backup devices:

485 and TCP communication controllers each set of ID and IC card reader each one ID card IC card card several electric locks a 485 converter a standard power supply (12V5A above)

Uses: Replace test
Small screwdriver

Uses: Remove the wiring of the terminal, it is too big to disassemble.

Strong Phillips screwdriver
Purpose: To remove controller board chassis power, etc.

laptop:

Requirements with a serial port or with a USB serial converter, with a network port.

Purpose: To exclude the use of the test, to eliminate the failure of the customer's computer itself or the operating system.

Network hub HUB: (two or three straight lines with crystal heads)

Set up a small LAN environment to test whether the TCP controller has communication problems.

Test pencil:

Does the computer and controller chassis leak current?

AC live position.

120 ohm termination resistor:

Some special occasions improve the anti-jamming ability of 485 lines.

Take just a few, not used.

Intercom:

On some different floors, two people are required to observe the breakdown and communication. Non-essential, you can use mobile phones instead.

Common method software test method:

Test method:

First start the management software, enter the total console to select the faulty door, and then click on the detection, software operation information will prompt the relevant fault, then you can deal with related faults. For example: the software sets some advanced settings category. For example, the user does not know the situation Under the setting of multi-card opening, which led to the real-time monitoring method can not open the card:

Select the door in the general console for real-time monitoring.

The real-time monitoring corresponds to the corresponding swipe indicator to facilitate the detection of the failure of opening the door by swiping the card.

The corresponding communication indicator helps to find communication failures.

Search .net method:

Selecting the controller in the basic settings helps to find the communication failure of the TCP/IP controller

Indicator judgment method:

CPU indicator:

When normal, the CPU indicator flashes. If it is on or off, there is a possibility that the power supply is incorrect, or the controller chip has been damaged and crashed.

CARD indicator method:

As long as any card reader of the controller swipes in and the card number is transmitted, the indicator will flash. If the indicator light does not respond after swiping, it may be:

The line from the card reader to the controller is broken, or the data line is connected incorrectly.

The reader's output format is incorrect.

The card reader is broken.

The controller's reader input is burned.

ERR fault indicator:

Normal is not lit. If it is flashing or lit, it may be:

The controller has a chip burned and the memory needs to be formatted. Or other faults, please communicate with factory technicians and contact.

Communication indicator:

485 controller:

Rx lamp indicates that the controller received the signal (including normal signal and interference signal)

The Tx lamp indicates that the controller is signaling.

TCP controller:

The Rx (Link) light indicates that the wiring is generally OK. (Some special problems that may already exist may not have been detected, but they are basically normal.)

A flashing Tx light indicates that the communication is in progress.

Replacement method:

Device replacement method:

Replace the suspected faulty equipment with equipment that you believe is good (usually tested, frequently used equipment) and see if the symptoms disappear.

If it disappears, the equipment may be broken. However, it cannot be completely determined, because if it is caused by a certain environment or factor, it may not be displayed immediately, or it will also harm the new device after a certain period of time.

If the equipment in question is changed, there will be no problem if it is detected alone. This may be a problem of the environment such as wiring. We should actively look for the source of the problem. Do not change it and think that everything will be fine.

Laptop replacement method:

You can determine whether there is a problem with the client's computer or operating system, or if it is not set correctly.

Exclude contrast method:

If there are multiple devices and only one device has a problem, if it is not the device's problem, there must be something external and different that has caused this particularity.

If multiple devices have the same problem, it is unlikely that all devices will be broken. There must be one and the same factor that causes all devices to have the same fault characteristics. Finding this common point is the key to finding the source of the fault.

If you suspect a problem with a device, first evacuate all of its external devices to see if there are any problems. If there are no problems, it must be an external device that caused this failure. Then load each external device one by one and load a test. , to see what is loading caused this failure. If there are problems with the evacuation of all external devices, it may be related to the device itself itself, such as power supply.

If you have a system with multiple devices and you are concerned about the cause of the failure due to mutual influence, consider evacuating all devices in a dichotomy, which helps to speed up troubleshooting. For example, if a system has 8 controllers, it may be considered to disconnect the next 4 and then disconnect the remaining 4 units.

Note

If external devices other than electric locks (for example, three-way gate elevators, automatic elevator doors, etc.) are connected, please communicate with our technicians first. It is best to provide detailed instructions for external devices. So that we can give you professional advice.