9
.
Solution: if cameras are installed around the apartment, the police situation can be monitored; If the perimeter is not equipped with a camera, the fence opposite fire alarm device should be installed on the inner and upper sides of the fence
.
Common problem of outdoor box: the use and management of public communication and cable TV facilities are chaotic
.
Cause analysis: the judgment of the security guard on the alarm range was not considered in the design of the defense zone distance of the perimeter infrared radiation alarm device
.
Cause analysis: if infrared radiation alarm device is installed at the perimeter, the impact of pedestrians, flowers and trees on the use of the system is not considered in the design
.
▌ common problems of monitoring center 13 and duty room: equipment placement is not well planned, wiring is disordered, there is no line identification, and the appearance is not good, which brings inconvenience and difficulty to equipment maintenance
.
Solution: the installation position of the exit emergency button shall be convenient for users to operate, and obvious text signs and concise instructions shall be made next to it
.
Cause analysis: the design is not in place, the bridge is not effectively allocated during construction, and the construction management is not standardized
.
Cause analysis: Construction and management are not in place
.
Common problems of Telecom and Netcom pipelines: Telecom and Netcom share a bridge, but there is no wire frame in the bridge, resulting in the failure of effective separation during cable laying, resulting in disordered cable discharge and easy failure during operation
.
Common problems of alarm equipment defense area: infrared radiation alarm is installed around the perimeter, and the defense area distance is far greater than 50m
.
Common fault of indoor pipeline: when the weak current is threaded indoors, due to the blockage of the weak current embedded pipeline, the strong current embedded pipeline is used to thread the weak current cable, and the strong and weak current cables share the pipeline, resulting in abnormal operation of the equipment, which is unfavorable to the equipment
.
Preventive measures: carry out construction rectification in strict accordance with the specifications, and strengthen the management of daily operation
.
5
.
Common fault of exit emergency button: the exit emergency button of the unit access control system is not clearly marked or the installation position is hidden, which brings inconvenience to pedestrians
.
3
.
Cause analysis: the outdoor speaker position is unreasonable in the system design
.
Cause analysis: improper construction management on site
.
Common problem of interface reservation in weak current box: only one empty box is considered for indoor weak current box of a project, and each functional module in the box needs to be purchased and installed separately, which increases the workload of project coordination and affects the beauty and installation quality
.
Cause analysis: power failure is not considered in the power supply of the system
.
The inner side can prevent damage to the enclosure from invading, and the upper side can prevent climbing, so as to solve the alarm caused by the swing of normal pedestrians or flowers and trees
.
Cause analysis: this phenomenon is caused by improper on-site construction management
.
If the copyright of the work is involved, please inform us and deal with it in time! Purification engineering information is available on the knowledge planet in
.
▌ weak current integrated pipeline design 14
.
6
.
Preventive measures: if an empty weak current box needs to be installed on site, the size must consider the module that can meet the installation standard; It is recommended to configure the finished weak current box for the fine decoration real estate, which is not only beautiful, but also reasonable and suitable
.
Cause analysis: poor consideration in design and poor operation management
.
Cause analysis: system design and project site construction management and inspection are not in place
.
Source: disclaimer of power expert Alliance: the above contents are from the network and the copyright belongs to the original author
.
Cause analysis: the size and installation mode of future functional modules were not carefully considered when purchasing empty weak current boxes
.
Other equipment of weak current system (except communication, wired and network public equipment) must be powered by independent uninterruptible power supply, and the power supply scheme of the system shall be designed and reviewed
.
▌ background music system 12
.
Common problems of outdoor speakers: a community has set up background speakers between residential buildings in the park to play background music at ordinary times, which brings noise to the owner
.
▌ power supply system 15
.
Solution: the distance of the alarm zone shall not exceed 50m, and the alarm warning light and manual reset device shall be set
.
Cause analysis: site construction and management are not standardized
.
Solution: the equipment system shall be designed according to the specifications, the construction shall be standardized, the identification shall be made, and the construction management and recheck after acceptance shall be strengthened
.
2
.
Solution: after threading is completed, make marks, sort out the cables and put them into the box, and close the doors of each weak current box in time to enhance the protection and safety awareness of finished products
.
10
.
Solution: add battery to the door machine of visual intercom unit to solve the power supply problem
.
Common fault of bridge: the cable length in the single bridge of the building is not reserved enough, and the bridge cover plate cannot be covered after the construction is completed
.
Cause analysis: the management and inspection of the construction site are not in place
.
Common fault of connection between bridge and embedded pipeline: the interface between bridge and embedded pipeline is not in place
.
If there is a sidewalk outside the enclosure, pedestrians passing close to the enclosure often cause false alarm of the system
.
Common problem of finished product protection: after the weak current box is installed and wired during construction, the cable is exposed outside the box without protection
.
Solution: each subsystem shall be designed independently during design, and the management after delivery shall be strengthened
.
Cause analysis: the installation position and mode of the exit emergency button were not well considered in the design
.
Common faults of junction box: the equipment in the box is installed irregularly, the wiring is disordered, and the box door is not closed tightly
.
Solution: in principle, the outdoor location of background music shall be set in a public place where personnel can stay and rest
.
Cause analysis: system design, construction management and inspection are not in place, and the rectification after acceptance is not in place
.
Once the community is powered off, the visual intercom system will stop working, and the unit door lock will be opened automatically, which will bring hidden dangers to the safety of residents
.
Once there is an alarm, it is difficult to determine the specific location of the alarm, which brings difficulty to the security inspection
.
Preventive measures: the cable frame shall be designed and clearly distributed, and the identification of on-site bridge distribution shall be made during construction
.
▌ safety protection system 8
.
11
.
7
.
Common fault of weak current system power supply: the visual intercom and access control system equipment in a community adopt the municipal power supply nearby
.
Solution: it is reasonable to embed the pipeline directly to the door frame
.
4
.
Solution: carefully review the construction drawings, strengthen the management of on-site construction, align the interface between bridge and embedded pipe, and ensure the construction quality
.
Entrance door magnetic flux disease: the indoor entrance door magnetic pipeline is not embedded in place
. Trapezoid Rubber Magnetic Chamfer
After construction, the cables in the bridge shall be neatly combed and the bridge cover plate shall be covered
.
Preventive measures: during cable laying, the length allowance in the bridge shall be fully considered
.
Common problems of the radiation device of the permeable enclosure: the radiation alarm device of the fence is installed on the outside of the enclosure
.
Aiming at the 15 common problems existing in the construction of weak current system, this paper analyzes the causes and puts forward corresponding countermeasures, which can be shared with allies for reference and discussion
.
▌ communication, data network and TV system 1
.
Solution: when the pipeline is embedded, the construction quality shall be checked in time, the construction management shall be strengthened, the weak current pipeline shall be rectified, dredged and re threaded
.
