The importance of camera maintenance in surveillance systems
The camera plays the role of image acquisition in normal monitoring. However, the camera is not a display. If the Beijing surveillance installation is not often not maintained, the loss of critical moments will be great.
One day, a netizen posted a video on Weibo. The video details the entire process of theft of the supermarket. Under the strict surveillance of the supermarket camera, a man and a woman thief "shun" 6 cans of brand-name milk powder within 10 minutes, a camera on the wall is facing the milk powder area, it is strange that the surveillance video can not clearly see the thief Specific face. Why is monitoring malfunctioning? It was discovered afterwards that the camera had too much dust. For 3 years, the camera was not wiped once, and it was all dust.
A similar incident occurred in a neighborhood called Kanghe Garden in Taizhou City. Recently, several thefts occurred in the community: Mr. Qin from the 14th floor just returned from the field and found that his family was stolen during the day. After the family left work at noon, the electric car was plugged into the kitchen door to charge, and the blink of an eye was gone. Although some monitoring is installed in the community, it does not work. It is understood that the community now has a total of 45 cameras installed. Most of the cameras are facing the residential roads. Some of them are installed relatively high. They usually do not pay attention to the maintenance of the equipment. Even the car numbers are not clear, and many of them cannot access the video data. In this situation, the camera can work to blame.
Camera needs frequent maintenance
It can be said that there are still quite a few events like the above. For a long time, the daily maintenance of monitoring equipment has not received much attention in a considerable number of places, causing many monitoring equipment to be damaged when it is just put into use, or just a display. The reasons are nothing more than the following:
First of all, the relevant management departments have not paid enough attention to the maintenance work of monitoring equipment. They believe that it is not necessary to invest too much manpower, material resources and financial resources, so the management of the monitoring system equipment is neglected, which leads to the lack of maintenance. There are even places where the security system is only used as a face project.
Secondly, there is no planned and complete monitoring equipment maintenance implementation plan. This is particularly evident in the installation and monitoring of civil Beijing, which is one of the reasons why the civilian security situation is worrying.
Third, in the procurement equipment procurement process, more consideration is about the cost-effectiveness of equipment procurement, while ignoring the maintenance and maintenance of the monitoring system and equipment. Now there are many brands of monitoring equipment on the market, there are many product suppliers, the quality of the products is uneven, some ** service measures are not in place, etc., resulting in the use of monitoring equipment for a period of time, the fault continues, the damage rate continues to rise, and ultimately have to There are equipment for large-scale renewal, and there are repeated investment and serious waste.
Methods for monitoring the daily maintenance and maintenance of equipment:
First, we must have the basic conditions required for normal maintenance of the monitoring system.
Do "four Qi", that is, spare parts, accessories, tools, instruments.
Spare parts: Generally speaking, each system must be built with a corresponding spare parts library. It mainly stores some important equipment that is not easy to repair immediately after damage, such as cameras, lenses, monitors, etc. In the event of a malfunction of these devices, the system may not operate properly and must be replaced in time.
Accessories Qi: The accessories are mainly the additional configuration of various discrete components and modules in the equipment, which can be prepared more, mainly for the maintenance of equipment. In this way, after maintenance, a small investment can be used to generate good benefits, and the cost of updating the equipment can be saved.
Tools and testing instruments: To do the diligent equipment, you must configure common maintenance tools and maintenance instruments, such as various pliers, screwdrivers, test pencils, electric soldering irons, tapes, multimeters, oscilloscopes, etc. Add, if necessary, you should also make your own simulation load, etc. as a test tool.
Second, some matters to be aware of in equipment maintenance
Moisture-proof, dust-proof and anti-corrosion: If the camera is hung on the shed for a long time, the protective cover and the dust-proof glass will be quickly covered with a mixture of dust, carbon ash, etc., which is dirty and black, and also corrosive and seriously affected. The viewing effect also causes damage to the equipment, so the dustproof and anticorrosive maintenance work of the camera must be done. In some places where the humidity is heavier, the installation position and the protection of the equipment must be adjusted to improve the moisture-proof capacity of the equipment itself. At the same time, dehumidification measures should be taken frequently in the high-humidity zone to solve the moisture-proof problem.
Lightning protection and anti-interference: The monitoring equipment has the characteristics of high density, low voltage and low power consumption of the original device, and is very sensitive to various electromagnetic interferences such as lightning overvoltage, power system operation overvoltage, electrostatic discharge, electromagnetic radiation, etc. The monitoring system equipment is extremely vulnerable to lightning strikes. Therefore, the monitoring equipment must attach great importance to the lightning protection problem during the maintenance process. Lightning protection is a more complicated problem. The lightning protection design of the monitoring system depends not only on the performance of the lightning protection device, but more importantly, before the design and construction of the monitoring system, the geographical environment of the monitoring system should be considered. Design appropriate cable routing, shielding and grounding methods. In short, lightning protection design should be considered in order to achieve good results. Anti-jamming is mainly to adhere to the principle of strong and weak power separation when wiring, separate the power cable from the communication cable and video cable, and strictly follow the wiring specifications of the communication and power industry.
Third, daily maintenance work should pay attention to details
1. Perform dust removal every quarter, clean the dust on the monitoring equipment, remove the dust from the camera, protective cover and other parts thoroughly, then wipe the lens clean with anhydrous alcohol cotton to adjust the clarity to prevent the machine from running. Static electricity and other factors will suck dust into the body of the monitoring equipment to ensure the normal operation of the machine. According to the instructions of each part of the monitoring system, the monthly inspection of its technical parameters and the quality of the transmission line of the monitoring system to deal with hidden troubles.
2. The equipment for monitoring equipment that is easy to aging is inspected once a month. Once the aging phenomenon is found, it should be replaced and repaired in time, such as video head.
3. Optimize the monitoring system and equipment on a monthly basis: reasonably arrange the monitoring network's monitoring network requirements, such as bandwidth and IP address, to perform anti-virus processing on network devices.
4. Provide monthly information service once a month: On the first working day of each month, report the repair, maintenance, maintenance and maintenance records of the previous month to the person in charge of the monitoring center in the form of electronic documents.
The regular maintenance and maintenance of monitoring equipment is first of all to ensure its normal use before it can play a role in security. We also know that even the best monitoring equipment and systems can not withstand the damage of time and nature, there will be a period of use, but we can extend the service life by doing routine maintenance work, Beijing monitoring and maintenance can avoid this Repeat investment to save costs.
Source of this article:
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Spec.:
|
Model NO.
|
Moisture(%)
|
Strength(%)
|
Carbon tetrachloride(%)
|
Packing density(g/L)
|
Load content(%)
|
H2S(g/cc)
|
Grain diameter(mm)
|
| TZK-3070 |
≤15
|
≥95
|
≥70
|
≤660
|
KOH 6.0-8.0
|
≥0.140
|
Φ3.0
|
| TZK-4070 |
≤15
|
≥95
|
≥70
|
≤650
|
KOH 6.0-8.0
|
≥0.140
|
Φ4.0
|
| TZK-6070 |
≤15
|
≥95
|
≥70
|
≤630
|
KOH 6.0-8.0
|
≥0.140
|
Φ6.0
|
| TPK-4×8 |
≤15
|
≥95
|
≥60
|
≤580
|
KOH 5.0-7.0
|
≥0.140
|
3.6-3.8
|
| TPN-4×8 |
≤15
|
≥95
|
≥60
|
≤580
|
KOH 5.0-7.0
|
≥0.140
|
3.6-3.8
|
| TZI-4070 |
≤15
|
≥95
|
≥70
|
≤650
|
KI 2.0-6.0
|
≥0.140
|
Φ4.0
|
| TZS-4060 |
≤15
|
≥95
|
≥60
|
530-560
|
S 10.0-12.0
|
-
|
Φ4.0
|
| TPP-30×60 |
≤15
|
≥95
|
≥60
|
-
|
H3PO4 5.0-15.0
|
-
|
30×60 meshes
|
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