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| Surveillance System Installation Notes 2010-4-7 |
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The camera installation:
1. To meet the target field of view to monitor the conditions required, its installation height: indoor camera mounting height to 2.5 ~ 5m suitable, suitable outdoor to 3.5 ~ 10m; elevator installed in the top of the box sedan, with elevator Operators pairs corner, and the camera optical axis of junction with the elevator and the ceiling 45 degrees.
2. The camera and supporting equipment, should pay attention to prevent damage and to coordinate with the surrounding environment.
3. In a strong electromagnetic interference environment, the camera should be installed to insulate.
4. Outdoor installation of lightning protection measures should be taken.
5. The camera must be firmly installed to prevent the monitor screen jitter.
6. Debug infrared light to night. At night was like through the device (such as a monitor, etc.) to adjust position of infrared light beam. And can effectively adjust the lens aperture settings.
7. Infrared light installation height should not exceed 4 meters high will affect the reflectivity of light. Downward angle of depression angle of 20 degrees should be better, elevation excessive reflectivity.
8. Infrared cameras, try to avoid direct light source, because the infrared light power control part is based on infrared light board installed in the photosensitive resistor to control the infrared lights to the power is turned on or not.
9. IR camera field of view to avoid a full black body, open office, water and other objects that absorb infrared light, CCD camera by matching the infrared light is infrared light reflected in the objects to the CCD camera lens into the image, if Infrared light is absorbed or weakened, it will greatly weaken the effect of infrared light and effective exposure
10. To protect the work of the infrared light indicators (see Manual), such as infrared light power supply power must be higher than the infrared light work of their own power and so on.
11. Users to use infrared light to read the instruction manual first, particularly to ensure the personal safety of equipment and precautions. Check previously described in terms of whether the matching requirement, taking into account the impact of factors taken into account, if not meet the requirements, it may be used to adjust equipment.
12. The installation process should be careful not to touch the lens, CCD target surface, do not let the dust from migrating to the camera above.
13. Head of the installation:
1) The head of the installation should be firmly, turning without shaking.
2) The technical requirements should be based on product and system design requirements, check whether the head of the rotation angle range to meet the requirements.
3) The decoder should be installed in the ceiling near or inside the head (subject to the left maintenance hole).
14. To avoid exposing the large motor equipment such as elevators, pumps, and fluorescent columns, and a variety of high-power radio equipment environment.
15. Use good BNC head, this is critical, bad BNC head makes you living death, is no exaggeration.
To be beside the point it, to do works must not cut corners, shoddy, short period of time may not issue a long time, the problem will certainly be exposed.
Line part of the installation:
1. Video cable: SYV75-3 video transmission line generally within 300 meters of transmission ,75-5 ,75-7, within 500 meters of 800 meters can be transmitted; Also of concern is the quality of CCTV coaxial cable, RG59U, RG6 and RG11 require a 100% copper and 95% copper braid shield. Ring then the maximum line resistance can not exceed 15 ohms. Distance of more than 500 m should be considered when the optical fiber transmission.
2. Power Line: flame retardant cable should be selected to protect the skin more firm and save the cost of the project under the premise of using the rough spots as far as possible to reduce the power attenuation.
3. Line of Control: General use shielded cable 2 * 1.0, RVVP2 * 1.0.
4. Threading pipe: Generally, you can use PVC pipe, buried or proof to the project should use galvanized steel pipe.
Control equipment installed:
1. Console, cabinet (rack) installation location should meet the design requirements, the installation should be a smooth solid, easy operation and maintenance. Cabinet frame) on the back, side net distance from the wall should meet the maintenance requirements.
2. All control, display and record the installation of such devices should be smooth, easy to operate. One monitor (screen) should avoid direct light from outside, when unavoidable, measures should be taken to dark. In the console, cabinet (frame) to install proper ventilation and cooling equipment measures the internal connector and the device should be reliable.
3. All the cable control room equipment installation location should be set up under the cable trough and into the line of holes, arranged, tied neat, number, and a permanent mark.
4. The working environment control equipment security systems require the installation of the equipment are air-conditioned room in a clean and require the installation of 19 "standard rack, the equipment should be adequate space between, need to use forced ventilation fan.
5. To ensure control room power FireWire, zero line, ground wire connection in accordance with specifications. In the control center equipment (monitor, hard disk recorders, matrix and video distributor) to open the case, use the Analog Multimeter AC Voltage range measuring equipment enclosure and connect the camera over the video cable connector to the ground voltage. The higher the voltage, the more likely cause some damage to the camera video output. When the voltage is not zero cases, to avoid the electric plug video cable.
Control Engineering 100 Q:
1 Why use power supply system power supply?
Prevent the power supply voltage fluctuations (high, low) on the monitoring equipment damage.
2, the stability of power supply control system on the server side effects?
Unstable power supply computer will not work, or even damage the computer power supply or motherboard.
3, select the power supply should pay attention to the main functions and parameters?
A: Output Power B: over-voltage protection function of C: over-current protection D: Output Voltage AC110 or AC220
4, how to choose a power supply?
According to actual situation, the output power required power supply is greater than or equal to the total power of all electrical equipment combined.
5, how to use the power supply?
A: first exchange of access to regulated power supply AC 220v power input.
B: the need for regulators to protect the device's power cable to the AC 220v power supply outputs.
6 What is the UPS power supply?
The uninterruptible power supply. With the regulation, frequency stabilization, anti-interference, to prevent the surge and so on.
Effect: if a sudden power failure, UPS can continue to supply electrical equipment for some time.
7, UPS power supply parameters of the main features?
A: The maximum current discharge time B: Surge protection.
8, UPS power supply selection method?
A: According to the need to protect the device the size of the power consumption.
B: According to the need to protect the equipment necessary to maintain power after power failure time.
9, UPS power supply to the computer with the benefits?
A: Prevention of sudden power outages due to voltage instability or damage to the computer.
B: to provide power, save data, shut down time.
10, leakage protection function?
When the electrical equipment leakage phenomenon, and automatically cut off power to protect the safety of personnel and equipment.
11, leakage protection installation method?
Leakage protection device used in conjunction with the air switch, installed in the equipment front-end power.
12, leakage protection device leakage protection function test?
In the case of electricity, press the leakage test button (usually yellow), the air switch to be tripped; while the blue button jump. Only by pressing the blue button to close the air switch.
13, leakage protection device to use?
A: Protection device used in conjunction with the air switch.
B: AC → switch into the air before the air leakage protection switch output → input → → leakage protection output load.
14, leakage protection method to judge whether the damage?
A: Let no-load leakage protection.
B: for power to test their functionality.
15, infrared lamps work?
By multiple infrared light emitting diode (λ = 850nm), issued a number of infrared beams.
16, infrared light in the important role of monitoring system?
A: In the light source is insufficient to provide compensation to the camera image clarity.
B: a monitoring system to ensure invisibility.
17, correct choice of method of infrared light?
A: According to control the size of the region.
B: camera distance from the monitor target.
18, infrared light in the monitoring system installation?
Under general loading the camera, the camera lens with the same angle.
19, infrared lamps a simple method to judge whether the damage?
Aligned with the camera infrared light, infrared light when the normal working hours, the monitor can be clearly seen through the infrared light emitting, and if you do not shine infrared lamp infrared light may be damaged.
20, the main functions of conventional infrared lamp and parameters?
A:: center wavelength λ = 850nm B: effective distance 10 (m) ~ 100 (m)
C: launch angle of 70 degrees D: Power Supply AC 130 ~ 260V
E: Operating Temperature -30 ℃ ~ 60 ℃ F: Power 12W
G: Water Level GB55 H: Structure of all-weather aluminum
21, conventional infrared lamp installation and use?
A: Usually installed in the camera below.
B: power supply is AC130V ~ AC260V.
22, multimeter's classification?
A: Digital Table B: Simulation Table
23, multimeter to measure stalls in the course of the selection method?
ACV: AC voltage profile Ω resistor files
ACA: AC current file → | - Diode file
DCV: DC voltage profile DCA: Direct current file
24 range multimeter in measuring the scope of the process of selection method?
A: without knowing the scope of the measured values should be chosen to measure the maximum range.
B: If you know the scope, can be properly selected range, to improve accuracy.
25, the three network cabling construction process how to use the multimeter on the line to short, way off test?
Using multimeter testing resistance pathway stalls; short-circuit detection.
26, the three network maintenance process how to use the multimeter on the power monitoring equipment to detect?
A: video and audio controller. Power supply: input AC220V power board output +5 (3) -5 (1)
B: control of the host power supply: 220V
C: control sub-unit power is:
27, using digital multimeter for AC voltage measurement method?
Select file ACV 750V
28, using digital multimeter to DC voltage measurement method?
Select DCV 20V files
29, the right switch machines for DVR?
A: First open peripheral, then open the host.
B: first off the host, after the relevant peripherals.
30, hard disk recorders simple maintenance and management?
A: Check the various connecting lines.
B: always remove dust.
C: always on the DVR hard drive to organize.
31, hard disk video recorder suddenly loses power during operation and after the treatment should be such?
A: First turn off all the peripheral power supply.
B: When the incoming call to be the first to open peripherals, power up the order to open the host.
C: let the system self-test is complete, run the operating system.
32, hard disk recorders in the role of the sound card?
Modulus of the audio signal, digital-analog conversion.
33, hard disk video recorder in the sound card interface function and role?
A: SPK, B: LINE IN, C: MIC
A: Sound Output B: linear input C: Mike input
34, speaker of classification?
A: Active B: Passive
35, speaker selection method?
A: active, passive B: magnetically shielded
C: Power D: Material E: sound quality
36 DVR capture card in the server-side monitoring system in effect?
Video signal acquisition, the analog video signals into digital signals.
37 DVR capture card on the functions of each interface?
A: Lotus Block: Video input connector (RCA)
B: S-Video input interface
C: +5 V or +12 V output connector
38, audio controller, server-side monitoring system in the main function and role?
A: Video signal acquisition. B: send and receive audio signals.
C: Built-in modem remote transmission module. D: remote access connection.
39, audio controller interface name and function?
A: BNC Block (8 video inputs)
B: BNC socket (local output) for the local video output.
C: BNC Block (local extension input) for the audio controller level with time (from the device's video output)
D: D type 15-hole (for connecting monitor host) audio connection for the data.
E: D-type 9 pin (cable)
40, audio controller, input and output connections in the system the name and role?
A: D-type connection for the same 15-core control communication between the host connection.
B: D-type 9-pin connection to its connection with the Communication between computers.
41, the server monitoring host monitoring system in the main function and role?
A: data and video and audio controller audio communication.
B: sub-machine data and monitoring audio communications.
42, monitor interface, host name and its function?
A: RJ-45 interface data, audio, communications (and monitoring sub-machine)
B: D15 pin and video and audio data communication between the controller, audio exchange.
43, control console input and output connections in the system the name and role?
RJ-45 4 twisted pair
A: 1 对 for the RS-485 communication line.
B: 1 对 for audio IN.
C: 1 对 as the audio OUT.
D: 1 对 for the backup line.
44, how video and audio controller (or control host) panel power indicator on the status of the equipment of the power supply situation in check?
Power indicator light for the normal supply of electricity, light, check power supply device is working properly.
45, sub-machine control system in the server-side control the main functions and roles?
A: Call, alarm, intercom, Chaqin function.
B: Sentinel on by a special cable to the video, audio, data signals transmitted to the service duty office computer.
C: in the duty room service through the computer fully the circumstances of each sentinel surveillance.
46, monitor sub-machine interface name and function?
A: 5 BNC-Block for the video interface (the first 4 for the Sentinel, head, relay, expansion, output)
B: 3 RJ-45, a crystal for the communication interface (data, audio, communications interface).
47, sub-machine monitor input and output connections in the system the name and role?
8-core cable: audio communication lines for data
Video output (BNC) 75 European -5 coaxial cable for video signal transmission line.
48, sub-machine by monitoring the status of digital display panel for monitoring the work of sub-machine power check?
After the power sub-machine code "-----------" to power digital display working properly.
49, the server-side monitoring system hardware?
A: computer and speaker, Mike.
B: video and audio controller.
C: control console (basic type equipment).
50, server hardware connected?
Computer COM1 - video and audio controller PCCOM1.
Computer COM2 - video and audio controller PCCOM2.
51, depending on the system to connect the audio controller?
MIC - Mike
SPK - Speaker
Local output video and audio controller (BNC) - Acquisition Card.
52, audio controller (or control console, monitor sub-machine, PTZ decoder) communication protocol used between?
Devices are used between the RS-485 protocol.
53, depending on the audio controller with the communication protocol used between computers?
Mainly uses the RS-232 protocol
54, remote connection, the main kind of compression algorithm used?
Mainly compact adaptive motion estimation algorithm for image compression.
55, audio controller uses the video amplifier circuit and chip?
Audio video controller chips mainly MAX440
56, head's role in the monitoring system?
By controlling the head horizontal, vertical motion, and control PTZ camera to zoom, focus and other operating body, a more comprehensive and clear control of the control region.
57, PTZ decoder function?
On the received data to decode the command, and then control the PTZ camera rotation and zoom, zoom and other operations.
58, head of the operating voltage classification?
Head of the working voltage of 24V and 220V are generally divided into the exchange.
59, PTZ decoder with the monitoring of communication between the host state to judge whether the normal way?
Green light flashes as normal communication.
60, power line classification?
A: Indoor Line B: Outdoor water line
61, concentrated power in the power cord of choice?
Requirements over the power cord with 1.5 square outdoor water lines.
62, monitoring system, why do centralized power supply?
A: to facilitate the unification of the control system power control.
B: help power lightning protection.
C: easy through the power supply to the unified power monitoring system.
63, concentrated power in the power line connecting means and sealing requirements?
A: welding power cord connector.
B: heat shrink tube with a small external connector for insulated.
C: Sol on the joint for hot water, sealed operation, and put on heat shrink tube.
D: heat to melt silicone tighten up shrink tube.
64, concentrated power in the power cord connecting and sealing of the tool?
A: electric iron B: Solder C: shrink tube D: hot melt silicone
E: hot air gun F: stripping pliers
65, the server-side, select the process control system wiring wiring routing method?
Server-side projects could adopt a string-shaped wiring, star, series combination of the way fortune.
66, the server-side monitoring system wiring several ways?
A: laying along the wall B: Overhead installation C: laying underground
67, the server-side monitoring system for the AC power supply requirements?
A: DVR AC voltage power supply requirements for the 220V ± 5%.
B: video and audio controllers, control console, monitor sub-machine power requirements AC voltage +85 V ~ +265 V.
68, ground effect?
A: functional grounding is to ensure the normal operation of electrical equipment or electrical grounding system with low noise.
Consists of: the center of earth, earth work, logical grounding, shield grounding.
B: protective grounding is to prevent people or equipment due to shock and grounding casualties.
Consists of: ground cover to protect the building grounding, lightning protection grounding, electrostatic grounding, repeat ground
69, need to produce ground material?
A: galvanized steel B: expansion bolt
C: galvanized steel strip D: copper nose, E: 10 square copper wire
70, earth ground resistance impedance values are affected by those factors?
A: soil salinity. B: soil moisture.
C: the number and spacing of ground steel.
71, through the improvement of the surrounding earth soil, reduce the ground to stop the methods and materials necessary?
Needs salt, charcoal powder and other materials, to the earth pit with salt water, charcoal powder.
72, the system ground resistance requirements?
DC resistance of the size of the ground work, then the relationship between law and grounding should be in accordance with the requirements of different electronic devices, generally requiring the resistance should not be greater than 4Ω.
A: security grounded grounding resistance should not be greater than 4Ω.
B: safety grounding of grounding resistance should not be greater than 4Ω.
C: lightning protection grounding of the grounding resistance should not be greater than 10Ω.
73, lightning and other severe weather on the server-side monitoring system damage?
A: interference with video signals, audio signals and data communications.
B: damage control equipment.
74, mine's working principle and function module?
When the high current, high-voltage input module into the mine, the mine module to input and output between the open circuit, and lightning protection module will be high voltage, high current through the ground into the earth.
75, mine module installation method?
Electrical equipment installed in the forefront.
76, audio controller (control console) in the video, audio, communications and power supply circuit design and the use of lightning protection devices?
A: Lightning diode B: varistor C: resettable fuse D: inductance
Transient suppression diodes, transient absorption power of 400W-600W, a few microseconds can absorb tens of thousands of volts.
77, audio controller (control console, monitor sub-machine) in the power supply circuit with the advantages of modular power supply?
When the supply voltage fluctuation (AC85 ~ AC265), to ensure that equipment is not affected to work properly.
78 steps to the modem?
A: string sent from the DVR-shaped binary digital signal.
B: by MODEM to the binary data into analog signals.
C: the analog signal sent to the phone line.
D: analog signal and then through the MODEM into binary digital signal.
E: DVR to receive the binary digital signal.
79, hard disk recorders of data transmission?
A: Serial transmission B: parallel transmission
80, interference of classification?
A: External interference B: interference within the system
81, the classification of the camera?
A: divided by color and black and white camera color camera
B: according to standard PAL system and NTST system is divided into
82, the camera's imaging principle?
Photo image of the object to be focused through the lens to the CCD chip, CCD light intensity according to the corresponding proportion of the charge accumulation, the accumulation of charge in all pixels in the video sequence under the control of the relocation point by point, by filtering, amplification processing, form video signal output. Video signal connected to a monitor or TV video input with the original image can be seen the same video image.
83, the main parameters of the camera?
A: CCD target surface size B: SNR C: Minimum illumination D: Definition
84, the selection of the lens?
In order to obtain the desired video effect, the matching lens, should focus on six basic elements:
A: The size of the object being shot B: Details of the object being shot size C: object distance D: focal length
E: CCD camera the size of the target surface F: resolution of lens and camera system
85 What type of lens?
Based on applications Category:
A: wide-angle lens: angle of 90 degrees to observe a larger area, near the image is deformed.
B: Standard lens: angle of 30 degrees, use a wider scope.
C: telephoto lens: 20 degree angle within the focal length up to several millimeters or hundreds of millimeters.
D: Zoom: continuously variable focal length lens, focal length can change from wide angle to telephoto focal length the greater the longer the image.
E: Pinhole Lens: for covert observation, is often installed in places such as ceilings or walls.
86, the role of protective cover and classification?
Guard monitoring system is an important component. It is to the camera in a dust, rain, high and low temperature under normal use and other protective devices.
Protective cover is generally divided into two categories:
A: indoor guard, whose main function is to prevent the camera off the ash and the role of a certain security.
B: Outdoor protective cover, protective cover that is generally all-weather protective cover, that is, regardless of wind, rain, snow, heat, cold and other harsh conditions, can be installed in the protective cover to the camera work. So that the shield has a cool, heat, rain, snow and other functions. Meanwhile, in order to make the camera in the rain and snow still normal intake of the image, usually in the front windows all-weather protection hood installed to control the wiper. In addition, there are domed, spherical shield, this protective cover built-in universal adjustable frame, handsome in appearance.
87, squadron duty and the duty room of sentinel surveillance sub-machine can not switch control?
A: Check the sentinel surveillance sub-unit RJ-45 connector and the control of the host and the connection between the production is good.
B: If you can not carry out all sentinel intercom, check the control of the host part.
C: If you can not conduct a sentinel intercom, monitor sub-machine part inspection.
88, monitor sub-machine with the host intercom, I heard sounds coming duty room, the adjustment method?
If a single sub-machine have this phenomenon, regulator board inside the P1 potentiometer, if all sub-machines are small, adjust potentiometer P2 motherboard. (Clockwise)
89, the client can not establish a connection with the server-side, server side possible cause of the malfunction?
A: Phone line fault or not properly connected.
B: modem connection failure or incorrect.
C: remote transmission module failure or power supply is not correct.
D: audio controller board failure.
90, remote connection to the server-side telephone line requirements?
Telecommunications Bureau of the analog telephone lines, transmission rate not less than 10K, less than 15K when the sound barrier.
91, the power supply to the control system of the server?
A: power surge (too high, too low) can damage the computer.
B: power ripple through the General Assembly created the video system interference.
92, the server-side monitoring system on a regular basis simply to maintain the content?
A, computer
B, the host hardware connection system
C, control sub-machine
D, between the host to set up monitoring sub-machine video, data, composite cable
93, the server-side monitoring system all-around environment monitoring system video, audio and communications signal quality of the data?
A, video interference
B, decreased quality
C, sending and receiving communications data can not be normal, control failure or delay.
94, speakers, Mike simple method to judge whether the damage?
Through the sound card MIC and SPK port on the MIC and SPK checks, pay attention: Do not enable MIC and SPK key mute.
95, the camera video image night image blurring or whitening solution?
A: blurring the night to re-adjust the camera's focus.
B: If the image is white, you can adjust the angle of infrared light irradiation.
96, the server side was a blue screen appears on the screen as the device easy way to determine fault?
A, check the routing of the video signals input is correct.
B, check the video signals and video and audio input Q9 first video input controller, whether good or touch input Q9 is the first welding Weld.
C, check the video signals camera power is normal.
D, check whether the video line circuit, short circuit.
E, check whether the camera or lens damage.
97, PTZ control the causes of failure:
A, transmission line too far; B, there is interference with transmission lines; C, too much front-end control equipment
Solution: A, check the lines, excluding interference; B, install one yards in back-end allocator
98, DVR recording how the data retention time calculated?
1 channel 1 hour storage capacity (G) = code stream * 3600 seconds / 8/1024/1000
99, what is dual-stream?
Hard disk recorder that can simultaneously output two streams, the main stream to the local video store, sub-stream to the remote access use,
Two streams of different bit rate can be set separately, in order to adapt to different transmission bandwidth requirements.
100, why is the camera one evening, a black bar on the screen?
A, power supply power is not enough; B, external interference; C, the camera's own fault.
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