The wider the construction of the video surveillance system, the more reasonable the layout, the greater the preventive effect. If the corresponding maintenance mechanism is not established in a normal way, the whole system will face all the embarrassing state after a few years, and the loss is immeasurable. If you want to extend the life of the monitoring equipment and exert its own performance, you must regularly maintain the monitoring system, monitor the system for regular troubleshooting, monitor the system for regular safety protection, and regularly maintain the front-end equipment.
First, the video surveillance system includes:
(1) Front-end equipment
(2) Transmission equipment
(3) Processing / control equipment
(4) Recording / display equipment
Second, maintenance content
1. Camera, monitor, optical transceiver, main console and other video surveillance, security system equipment maintenance.
2, DVR and matrix host maintenance.
3, system platform maintenance, hardware encryption, software troubleshooting and recovery, hard disk garbage cleaning.
4, other maintenance: damage to the poles, equipment boxes and other facilities and natural rust, if necessary, repair and surface renovation. Check the reliability and robustness of the wiring, connecting equipment and other related facilities.
Third, maintenance methods
1. Camera part: Visually check whether the camera has image, interference, clarity, and signal strength.
2. PTZ part: Perform pan/tilt control to check the operation of horizontal and vertical directions, including up and down, left and right, and automatic.
3, the lens part: debugging variable lens expansion, aperture opening and closing, focus adjustment.
4. Power supply part: Check whether the output of the power supply is stable with a multimeter, and whether the heating condition of the power supply is normal.
5. Safety situation: Check whether the camera head and the bracket are firm.
6. Hygiene: Whether the camera cover is clean or not is directly related to the image clarity of the camera.
7. Interface condition: Check each BNC connector once a month for solder joint aging/RJ45 crystal head is not vacant.
8. Control at the video surveillance point, view the image to see if there is any loss of image and whether there is a point that cannot be controlled or only controlled.
9. Perform a comprehensive maintenance of the video server every quarter, tighten the fixing screws, tighten the terminals properly, and perform dust cleaning and temperature and humidity detection on the circuit board.
10. The control module box and wiring should be cleaned and cleaned every quarter.
11. Test the system line every half year to check whether the line is damaged or aging, whether the contact is good, whether the module terminals are loose and oxidized, whether the line protection layer is intact or not, and timely maintenance.
12. Check the grounding of each grounding point well every season.
13. Use a remote computer to control the host daily and conduct a patrol inspection for each monitoring control point.
14. Perform a complete hardware and software maintenance of the local hard disk recorder at each point once a month. Tighten the fixing screws, tighten the terminals properly, and remove the oxide and dust removal cleaning at the terminals.
15. Organize the storage space of the DVR every six months. The important files should be backed up by external devices. If there are any problems, repair or replace them in time.
16. Check the grounding of each grounding point well every quarter.
17. Perform a complete hardware and software maintenance on the video server at each point once a month, tighten the fixing screws, tighten the terminals properly, and remove the oxide and dust removal cleaning at the terminals.
18. Organize the storage space of the video server once every six months. The important files are backed up by external devices. If there are any problems, they should be repaired or replaced in time.
Fourth, common troubleshooting
The fault points of the monitoring system are roughly as follows:
1. Equipment failure caused by quality problems of the equipment itself.
2. Long-term use of the equipment, equipment damage caused by natural aging of the device.
3. Equipment damage caused by abnormal power supply quality during operation.
4. Signal transmission failure caused by damaged line.
5, the front-end image acquisition equipment accessories, the environment has changed. Poor image quality caused by interference.
6. Construction quality failure caused by construction quality or failure to take lightning protection measures.
7. System downtime caused by operator misoperation.
8, network virus intrusion and so on.
Case 1: The operating keyboard is out of order.
This phenomenon can be determined to be caused by the operation of the keyboard when the connection is checked. On the operation instructions of the keyboard, there are generally solutions to the crash. For example, the host reset method can be solved by this method. If it can't be solved, it can be considered that the keyboard itself is damaged.
Case 2: The digital hard disk recorder cannot be started.
The host power switch is out of order; the host power supply is damaged; the main board or CPU card is broken; the hard disk boot area is damaged, or the hard disk itself is faulty; the operating system is damaged. The above reasons are carefully analyzed and excluded one by one.
Case 3: The DVR host crashes.
The image monitored on site is not fixed or the time information superimposed on the image does not go. There are mainly aspects: software problems, for the failure of the DVR host including the operating system or monitoring software, the embedded DVR is a monitoring software problem. A file in the system software is destroyed. Reinstall the system or monitoring software for the PC-type hard disk host; the embedded host needs to upgrade the software. Hardware problem, there are bad sectors on the hard disk in the host, and the hard disk needs to be repaired or replaced. The power supply in the main unit is not enough, and the high-power power supply is replaced. There are too many hard disks in the mainframe, and the heat is too large, causing a crash. The host video card generates too much heat, causing a crash, replacing the video card or replacing the host.
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