security & smart home blog

How to choose a cctv system

May18
2012 Leave a Comment Written by admin

Outdoor PTZ also has a waterproof, explosion-proof features: In addition to possess all the features of the indoor PTZ
Hemispherical color / black and white camera: ceiling installation, beautiful appearance, suitable for various occasions
Used to display video images of the front-end color camera color monitor:
Timing switch system: switch display multiple camera images on a monitor in turn, can be focused to switch the screen display, switch

Time can be adjusted. Even if the increase in the number of cameras, monitors do not have to increase, so the system can be cost savings, very economical.

dvr system: the split screen of a monitor and display the 4-16 camera images, only one person is able to simultaneously monitor multiple

Place of the scene. Images of all cameras can be programmed into a group or switch in a high-definition monitor at the same time split display can also be self-

Separately in order to show or display the status is set to 4 split or 9 split by the switch. Focus camera images into a 16-painting system

Using real-time video of a box of ordinary 180-minute video of the surface processor by a 24-hour recorders, video can playback in order to provide for the management of

Evidence.

Remote operation of camera zoom system: a full range of PTZ cameras, 32-times zoom camera, the PTZ the Keyboard operation can be achieved

Camera image rotation scan up and down, the camera pan and tilt steering, lens focal length, lens aperture, remote control, remote capture

Details of the panorama and zoom to catch the scene objects, the magnification can be scheduled.

Lens Summary: power zoom, auto iris lens, manual iris lens

cctv cameras: Auto Electronic Shutter, the Auto Tracking, white balance, backlight compensation, color reproduction and accurate function.

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What is cctv system

May18
2012 Leave a Comment Written by admin

cctv system is an important part of security technology to prevent the system is an advanced ability to guard against highly integrated system by remote cameras and auxiliary equipment (lenses, head, etc.) directly to watch the monitor places all the circumstances, the place to be monitored at a glance. Cctv system can also be linked with anti-theft alarm system and other security technology to prevent system operation, its ability to guard against more powerful.

cctv system can not be directly observed occasions, but it can real-time, the image of a true reflection of the screen being monitored object, and has become a very effective observation tool in modern management monitoring. Because it has only one person in the operation of the control center can be observed in many regions, even the unique features of the remote region, is considered to be the necessary means of security work.

cctv system can provide some important areas of close observation, monitoring and control. The system meets the relevant national technical regulations. General television cameras should be set in the system, to achieve all-round monitoring. The main equipment of the system should be configured cctv cameras, VCR Delay and image processor, users can tune to any screen and remote control operation on any remote control ptz camera and zoom function.

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How to choose a good CCD board

May17
2012 Leave a Comment Written by admin

1.Monitoring the core parts of the CCD board surveillance cameras, and his success or failure to decide the fate of a video camera, not billboards child is very small, but the circuit complexity, many small and medium-sized camera manufacturers basically can not play, only to buy someone else’s CCD board to assemble their own process. First CCD board manufacturers have technical strength, such as securitysmarthome, CCD R & D experience, camera production experience, we feel field trips can be trusted, and Working with companies like practical, if you encounter even the maintenance department small workshop, cry no place.

2.to see the image of the CCD board, the best use of color cards, color control, and see if there is COLOR, to see the plant to see whether there is a variegated white walls, fluorescent whether this can be light, have have to test.

3.See sharpness through The simplest way is the camera facing the edge of the window, the edge of the wall edge of the table to see if the sawtooth is uniform and clear, the more uniform the more clear the more OK to.

4.See current market above the CCD board power supply options are not large differences, such as securitysmarthome CCD board machine, using a wide voltage 6.8-16V design to solve a small line of construction wiring line length The pressure drop caused by the problem, many people do not know the daytime images at night, not the root cause of the image, the actual reason is that the CCD board is not resistant to the low-voltage lead, the market ordinary CCD board is 9-13V.

5.to see if lightning protection, anti-static, anti-surge power protection circuit, generally above the CCD board machine consists of two protection diodes to undertake this work, but 90% of manufacturers have province, in order to reduce the production of security cameras costs!

6.the day the effect of test qualified is not enough, the turn of the test of illumination at night, in at 5LUX about the environment to see if the noise is uniform, whether small, whether there is moire, and finally fitted with infrared light. detect infrared sensitivity as standard, countries did not make out the best way is to contrast. If we used securitysmarthome CCD board machine, you will find during the day and the effect of the reduction degree of good, better night illumination, Even worse is the wide voltage, lightning and surge power design, it is worth we have. Choose a good CCD plate, do the first step to a good security system!

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Much more difficult to install the monitoring system

May15
2012 Leave a Comment Written by admin

If you buy back a TV not need someone to help you install it? The answer is no; If you buy back a VCD, you not need to ask people to help you install it? The answer is no; If you buy back a home theater is not need someone to help you install it? Most of the answer is no. However, to buy back a home monitoring system or a home alarm system, do you who installed it? …… I think we find it difficult to answer a lot of time we may not have thought I would buy, not to mention the all-yourself installation.

Please think about it: TV to buy back, we need to plug in the closed-circuit cable plug, power, looked at the manual tune can be a good channel; VCD to buy back, we need to VCD AV cable and audio cable into the TV AV input interface of the machine with a remote control to TV convert video and put it into the CD-ROM power; sound system to buy back, but on the basis of the previous VCD or DVD audio signal into the sound system , then each speaker according to the need to place on it.

In fact, a home security system and home monitoring systems and above installation is essentially the same: a 4-way embedded home monitoring system such as: We monitor the VCR’s video output cable into the TV’s AV input port, four cameras video cable into the monitor VCR video input port, power on the TV to video’ll be able to see the monitor screen … no we thought complex. The only contact is relatively small, hand encounter even less time, plus he has been wrapped in a layer of high-tech outerwear, we always feel how complex, and more mysterious Bale.

Of course, the monitoring system of a supermarket, a factory monitoring system, a set of district monitoring system … would not like the above just plug the cable on the line a, it may require more complex a few times and even hundreds of times job. However, families, small shops and offices, we just need to record home or shop, office environment, real-time image can be, so we need the product installation and a home theater installation complexity, with very simple operation can be composed of a set of its own security system to protect your family’s safety!

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Comprehensive security monitoring system

May15
2012 Leave a Comment Written by admin

Comprehensive monitoring system is a fixed focus lens in the aforementioned sentinel surveillance system replaced the electric zoom lens, and increase the movement can be up and down about a full range of the PTZ (PTZ has two electric motors), so that each monitoring point, the camera can be up and down the glance, they equipped the lens focal length within a certain range change (to monitor the scene can be pulled away or propulsion). Obviously, PTZ and electrical lens action by the controller or in conjunction with the system host decoder to control.

The most simple and comprehensive monitoring system with the most simple fixed-point monitoring system in the front-end increased by a full head and motorized zoom lens, a controller in the control room, the other front-to-control room needed more than control cables laid more than one core (10 core or 12 core). To a small garment factory monitoring system, for example, two omnidirectional camera installed in its garment workshop, the director of the Office with a regular TV, a switch and two controllers when the plant long need to understand the workshop situation, just selected by the switch the screen of a video camera, the camera scanned the entire monitoring site and by operating the controller, a local sentinel surveillance.

In practical application, not necessarily to make each one monitoring point to a full range of configuration, usually only with a full range of equipment in the entire surveillance system in a few special monitoring point. For example, in the aforementioned sentinel surveillance system in a guest house, we can also consider the fixed-point camera will monitor the parking situation changed to an omnidirectional camera (to replace the electric zoom lens and increase the full range of the PTZ), a controller in the control room so that you can monitor the scope of the parking lot expanded, either the entire parking lot glance, a local monitor. In particular, when advancing the lens, you can also see the license plate number, form a complete all-round security system!

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Safety monitoring system composed of instructions

May14
2012 Leave a Comment Written by admin

The typical closed-circuit monitoring system displayed by the camera part, transmission part, control and part of the record and part of the four blocks.

(1) camera part
The camera part of the forefront part of the television monitoring system is the “eyes” of the entire system. Be monitored workplace area, installation of a zoom lens on the camera, the camera can observe farther and more clearly; can also install the camera on the power head on, you can head to drive the camera level and vertical rotation, so that the camera can cover a greater angle. China Theo monitoring system in some cases, especially in the case of outdoor applications, in order to dust, rain, resistance to high temperature, corrosion resistance, etc., should also install a special shield on the camera and its lens, and even The head must have the appropriate protective measures.

(2) the transmission part
The transmission part is the monitor image signal pathway. In general, the transmission part of the single transfer images, sound signals. Meanwhile, the need to have a control center via the console, camera, lens, PTZ control, and thus the transmission system also includes a control signal transmission.
Commonly used in the transmission mode, close the video cable transmission, not more than twelve kilometers distance commonly used coaxial cable transmission, longer distances can be optical fiber transmission. For long-distance transmission, the need to with the video signal amplifier, the image signal correction and compensation equipment.
Control and part of the record

(3) Control and part of the record
Responsible for the control of the camera and its accessories (such as lens, PTZ), and images, sound signals to be recorded. DVR technology development better, it can not only record images and sound, but also includes a split screen to switch, PTZ camera control and other functions, essentially replaces the screen switches used in the past, Quad, PTZ controller, camera controller, and other products. If a customer asks for PTZ, lens (especially high-speed ball) very easy to control, you can increase with the control of the keyboard.

4 display section
Generally composed by a few or more monitors, LCD monitors are gradually replacing the traditional CRT monitors, commonly used are: Bo display LCD monitor. The number of cameras is not a lot, not very demanding in the case of the monitor is generally directly connected to the DVR base station burglar alarm monitoring system can be. If the camera number, and request multiple monitors on the screen switch shall be equipped with the “Matrix”.
Dedicated monitor is more expensive, can also be used to save money, ordinary TV alternative, but the TV not suitable for 24 hours a day, year-round boot failure rate will be high, and this may cause a fire.

More than four parts combine to form a complete security system!

Monitoring system With the raising the level of development of computers, from analog system to a digital system, digital system functionally sound than the analog system, the operation is extremely intelligent and centralized. The monitoring system is suitable for places include:
Government agencies, electricity telecommunications, prisons, military, banking, treasury, supermarkets, shopping malls, hotels, residential, schools, office buildings, road monitoring.

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IP network security monitoring system will be the hidden

May14
2012 Leave a Comment Written by admin

A large amount of data in the original video analog to digital conversion, it must be compressed to the IP network transport, so in the IP video surveillance systems such as video and audio signals are compressed, the current video compression algorithms regardless of the merits of belong to lossy compression. The video quality loss is difficult to promote the importance of IP standard-definition video system, as long as the face of the decoded analog video and encoded video to do a comparison, will see the difference between the two. Of course, if the compression algorithm is not too bad, even after the high-definition video compression and decompression are usually better than standard definition analog video, thin dead camel end than the horse.

Mainstream H.264 algorithm require a higher performance of the hardware encoding and decoding equipment, encoding and decoding equipment can not meet the requirements for encoding and decoding time will increase, which will further delay of video. Delay manipulation first will bring great inconvenience to the user experience, minimal bandwidth control signaling compression, relative to the video, that the control command is a real-time video delay in the IP system is a second , front dome, PTZ control command is issued when the user has to respond to PTZ command to start the rotation, but one seconds later, turn the camera to get video to the user to see at this very moment, the user will think that the ball machine did not turn and continue to send PTZ yards, results or will result in front-end PTZ out of control, it is difficult to accurately locate. If the network environment is very poor, then the point of the PTZ command is likely to be lost so that the front of the PTZ Cameras would not be able to receive commands. In short, the delay is an important factor to restrict IP video surveillance system development, and in some need to monitor high-speed
Moving objects or higher requirements for real-time applications, such a delay is unacceptable. IP delay defects in the future a long time are difficult to be solved, no small challenge to the security system monitoring!

The open nature of the IP system is a double-edged sword, great risks bring great convenience for the user at the same time as the monitoring system. IP monitoring system, the video encoder or IP camera is often on the installation of outside the field of front-end, the video stream via Optical and other equipment to transmit to the monitoring center network, the signal transmission path of the IP system is open to anyone in theory may enter into the security system of the transmission network, and through this channel to upload the virus file, namely, will cause great harm to monitor the network, resulting in the collapse of the system, brought great danger to the security system!

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Home automation, residential security system

May11
2012 Leave a Comment Written by admin

A basic system: indoor wireless alarm system
Household indoor alarm functions, including: kitchen combustible gas monitoring, bathroom safety monitoring.
Functional Description:
An arrangement of combustible gases (CO, A, C, butane), the sensor nodes, real-time monitoring of the concentration of each gas safety alarm.
The layout of the gas content monitoring, real-time monitoring and alarming for the gas concentration to the lowest value of human health and safety in the bathroom.
, Alarm, including: indoor buzzer alarm, LED light alarm, LCD real-time data display.
, Users can also view current monitoring data through the LCD by connecting the local computer view.
5, a remote control to complete control of all monitoring alarm switch nodes.

Two-cell network wireless alarm systemDistrict network alarm system, each household indoor alarm system composed of a cell-free network.
Functional Description:
6, each household indoor alarm information can plot the existing network real-time transmission to the property management computer, at the same time, property management and monitoring side support computer voice alarm.
7, property management at the computer store alarm data to facilitate real-time alarm information queries.

Three Web-based smart home system
Each household indoor monitoring data uploaded to the Internet, easy view room status, and historical data in any place and at any time by households.
Functional Description:
8, residents can log on the web pages to find their own room, anytime, anywhere to view the indoor state (temperature, air quality, humidity, light intensity, theft, etc.), and you can view historical data.
9, the residential property management real-time monitoring of any given room.
10, the security alarm information can send short messages to mobile phone users.
11, all the sensors in the room monitoring equipment to form a wireless local area network, a remote control monitoring node.
12, all interior wireless remote control device can be integrated into one remote centralized control and can monitor remote network terminal.
13, the indoor sensor monitoring nodes are free to wireless communications, intelligent wireless network.
These are all installed, the formation of a security system to protect the family and community safety.

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security control system

May11
2012 Leave a Comment Written by admin

In the intelligent building, the security control systemin the amount of information and information processing workload based console operation generally uses a computer system, user software programming keyboard to complete the drive head to inspect video switching, alarm processing, and device status self-test work.
Security system, now appears as a police probe CCDsecurity camera, security cameras will get the video signal transmission to the host, host of high-speed image processor to digitize the video signal to analyze the image and background image of the video signal , if there are differences on the alarm, because it is a full-screen alarm, which is not easy omission. The host automatically collected alarm image and stored in computer after the user according to the time, place readily accessible alarm scene images, in order to understand the cause of the alarm. TV monitoring system and alarm system will be combined, monitoring and alarm image recording simultaneously, and the system no VCR, no video distributor, all alarm records in the computer’s hard drive, all operations prompt action, according to the software on the screen is a new concept of security for users.
Switch control system has the following two:
Single-step switch: Use the control keyboard to any of the input video signal to switch to the main monitor.
Sequential switching mode: control keyboard prepared by the sequential switching mode program, the security system in a number of input video signal coding for a program, the program runs, the picture can be pre-set

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Aspect of low-light camera technologies applications

May03
2012 Leave a Comment Written by admin

In recent years, with the rising progress with the CCD and DSP technologies, low-light cameras are increasingly mature and stable, and employed in many fields, but market specialists

Low-light camera is just not the mainstream market place, and only in specific circumstances, such as adding a light supply higher expense or not is simple to install light

The case of illumination the Starlight Cameras in order to play a role.

Low-light camera technologies
One of the most central components with the camera image sensor CCD, minimum illumination in low-light camera is actually the CCD’s sensitivity to ambient light is

Necessary for regular imaging darkest light. The unit of illuminance is Lux (Lux), the smaller the value, the much less light needed as well as the a lot more sensitive the camera.
Market applications up to two CCD Sony’s Japan SuperHADCCD Ex-viewHADCCD,. These two structures, each and every pixel of the CCD

Positioning OCL lens, the lens may be the concentration with the light shooting sensitive area, so increase sensitivity. On this basis, ExviewHAD goes a big step, so that

OCL has close to a zero-gap structure have lower SmearLevels, along with the use in the patented technology CCD per pixel aperture ratio, which made holes tired

The laminated received the maximum amount of light, thus achieving a a lot more low-light needs. Utilizing Ex-viewHADCCD, cameras on the outside light sensitivity

Greatly enhanced its sensitivity may be elevated to 4 instances the typical camera.
Exactly the same pixel from the CCD size the greater its sensitivity as you possibly can, the monitor on the market size with the CCD camera is generally 1/4 “and 1/3″. Naturally, the influence of proactive

Like machine illumination are the following primary aspects.
Frame accumulation technology
1, the DSS and the Sense-up function
LG Sony primary chip in the old model, DSS (DigitalSlowShutter digital slow shutter), under LGXDI new models for the Sense-up (low sense of

Degree of adaptation). Such cameras, also known as the (screen) Cumulative camera, the low light image charge single frame cumulative enhance

Exposure of the CCD in a single image, thereby enhancing the sensitivity in the camera for single frame image. In this way can also get a lower illumination target, but want

To lessen the continuity in the image, so decide on this camera to try not to become utilised together with all the head, otherwise it will produce the missing image now

Like.
two, frame cumulative noise amplification
Frame cumulative achieve illumination at the same time the noise amplification at the same time, with noise reduction technology to work with the image could be much better like LGXDI Series models

3D-DNR (three-dimensional digital noise reduction) functions, the XDI by means of DSS technologies, 3D-of DNR technologies, and also exclusive AGC control mechanisms, not simply in low-light environments

So that the screen becomes brighter, and optimize the moving objects, to reduce noise, ideal for low light surveillance.
AGC (automatic obtain)
The same atmosphere, the greater the the camcorder maximum obtain, the obtained image, the brighter the lower the measured illumination, LG testing minimum illumination specifications

Open for the AGC (automatic achieve).
Aperture
Aperture size (F value), the smaller the aperture the greater the F value they represent the lower the essential illumination.
Dual filter technologies
Automatically switch color mode DAYMode the OLPF black and white mode NIGHTMode DummyGlass. Accept more infrared light at night

, Improve the illumination; through the day to lessen the collection of infrared light, minimizing the interference of infrared light on the color signal. Using ExviewHADCCD the camera, even in

Really dark atmosphere, the camera can typically see the human eye can not object, the emergence of this technologies has been monitoring the industry for every

Each kinds of light environment showed the very best outcomes, particularly with particular infrared lighting, it is possible to get high-resolution black and white images, to obtain

Zero illumination manage (complete light of circumstances). Near-infrared region within the close to infrared 760mm-1100mm, with all the suitable wavelength infrared lighting,

Clear black and white pictures.
Low-light camera applications
Concentrate on low-light camera monitoring for road highway toll monitoring technique, the primary lane of the toll booths, toll plaza, toll booths

Charges, to observe the operation approach from the kind of automobiles through the toll lane, toll and fare collection method to emergencies and particular events

And records, the implementation of efficient supervision. Toll stations, specifically at night, staff have to see license plates, whilst below normal circumstances, after the lights to open the road

Environment illumination and license plate illumination formation of a particular dynamic range, classic camera is difficult to see, so the demand for low-light camera

.
Followed by the electronic police technique, cctv program and red-light automatic video recording along with other means to improve the intuitive command center, real-time mobilization capacity and

Visitors accidents, and accident response capacity, and enhanced investigate and cope with the violation of objectivity and control locations of extensive, coordinated control, the enhancement of automobile

Capacity. Need to see the license plate, the 24-hour monitoring, With demand so low-light cameras.
Moreover to some of the far more classic areas of monitoring, but additionally in some circumstances in low-light environments could be inconvenient plus the spot in the light source, for example in hospital wards,

The performance appraisal want to be a physician or nurse on duty. If light ward Riga, impact patients’ rest, and as a result have to use low-light

Camera. You’ll find also some location inappropriate external light source, such as prisons and other special units in the hidden place of mounting the camera.
In the moment, the application of low-light camera is no longer restricted towards the CCTV monitoring occasions, such as a few of the equipment manufacturing business, bio-medical and scientific study and military

Locations possess a wide range of applications, such as securitysmarthome from the Starlight Cameras, its illumination value can reach 0.00001, and also the development of low-light cameras don’t only concern the existing monitoring demands in the area, but must listen to the needs of other industries to resolve low-light circumstances offered low-noise images as a way to adapt to the wants of several fields

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