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Special Protection Cameras Secure High-Risk, Cameras Secure High-Risk,

Special Protection Cameras Secure High-Risk, Cameras Secure High-Risk,

Editor / Provider: COMPILED BY THE EDITORIaL TEAM | Updated: 6/4/2008 | Article type: China Corner

Chinese camera manufacturers are providing customized robust housing designs for applications requiring explosion-proof, vandal-proof and waterproof products.


Waterproof or weather-proof protection is generally used for outdoor speed domes and IR cameras. Indoor fixed IR domes usually have vandal-proof capabilities to enhance security. Mature molding techniques and better quality control have improved reliability of Chinese-made products. A&S looks at vandalproof and waterproof cameras from Aebell, Qihan, Success, Sunell, Topband and XCJ.


Aebell's BL-880BB80 is a vandalproof dome camera with IP68 rating, 420-TVL horizontal resolution and 0.01 lux illumination. It comes with a one-third-inch Sony super HAD CCD image sensor. The product supports auto gain control and auto white balance. Resolution is 500 pixels by 582 pixels in PAL, 510 pixels by 492 pixels in NTSC; electronic shutter speed is 1/50 second to 1/100,000 second in PAL, 1/60 second to 1/100,000 second in NTSC. It is equipped with an internal synchronization system that has an S/N ratio of more than 48 dB. It can be customized with six-millimeter fixed lenses or 3.6 millimeter, eight-millimeter and 12-millimeter varifocal ones.


Sunell's SN-VP586 ser ies WDR vandal - proof dome cameras adopt one-third-inch DPS with high resolution of 540 TVLs that feature a maximum 120 dB super-dynamic range, 12 privacy masking zones, OSD menu control with dip switch, DC auto iris, varifocal lens and three-axis bracket designs to enable three-dimensional rotation. Power consumption is a maximum 4.5 watts, and it supports adjustable AGC and gamma correction.


With 520 TVLs and 40-millimeter to 60-millimeter effective IR distance, Topband's TBO-3095 one-third-inch Sony CCD IR water-resistant camera has a scan system with 520 lines in 60 scenes per second (NTSC) and 620 lines in 50 scenes per second (PAL); frequency is 15.734 Mhz (H) and 60 Hz (V) in NTSC and 15.626 Mhz (H) and 50 Hz (V) in PAL. It supports nine-volt to 14-volt DC power supply, auto white balance and backlight compensation. Minimum illumination is 0.1 lux at F2.0, IR on 0 lux with standard eight-millimeter lenses. It uses 1.0 Vp-p 75 ohms to output video. 49 IR LEDs ensure radiant distance up to 60 meters.


Meanwhile, its TBO-5074VIR is a vandal-proof camera that features a one-third inch Sony CCD sensor with 480-TVL horizontal resolution and built-in six millimeter to eight-millimeter lenses. Minimum illumination is 0 lux at F1.2 and IR distance is 30 meters.


XCJ ' s SC- 35 ( 351 ) HP is a one-third-inch Sony CCD IR water-resistant camera with CCIR, EIA, PAL and NTSC signal systems. It features 480-TVL resolution with an S/N ratio of more than 48 dB and 12-volt DC power supply. Composite output is 1.0Vp-p, 75 ohms and electronic shutter speed is 1/50 second to 1/100,000 second (PAL), 1/60 second to 1/100,000 second (NTSC). It has a TV system with CCIR and EIA (black-white) and NTSC or PAL (color). Minimum illumination is one lux (IR on). It offers auto white balance mode and auto gain control. Its weather-resistant rating is IP-55 and power consumption is 12 volts DC and 310 mA with white balance range from 3,200 K to 10,000 K. The product works in temperatures from -10 to +50 degrees Celsius. It has 0.45-gamma correction and lens options of 3.6 millimeters to six millimeters. IR LED visible range is 30 meters and the camera weighs 380 grams.


Success' TS-882 is a water-resistant day night digital CCD camera with IR LEDs. It uses one-third-inch Sony sensors for clear, stable image quality, and it supports 4.9-millimeter by 3.7-millimeter PAL and NTSC signal systems. Resolution is 500 pixels by 582 pixels (PAL) and 510 pixels by 492 pixels  (NTSC). It also features 420-TVL horizontal resolution with an S/N ratio of more than 48dB (AGC off), 12-volt DC power supply (when infrared lamps are on, maximum electricity is 400 mA). Video output is 1.0 Mp-p 75 ohms (BNC) and shutter speed is 1/50 second (1/60) to 1/100,000 second. I tuses 3.6-millimeter, six-millimeter and eight -millimeter selectable lens mounts and minimum illumination is 0 lux (infrared LEDs on). It can be customized with 24 or 36 IR LEDs. Infrared wavelength is 850 nanometers and infrared lamps are 25 millimeters and 30 millimeters.Dimensions are 68 millimeters by 100 millimeters by 65 millimeters.


Qihan's VS-59 is a vandal-proof camera that features a one-third-inch aluminum alloy (vandalproof). Camera and brackets incorporate concealed cables. Protection rate is IP-66 and dimensions are 345 millimeters by 110 millimeters by 70 millimeters; it weighs four kilograms.


Secunion has explosion-proof cameras for high-risk mineral and gas areas as well as products that are suited for coal mine applications. Secunion's BA explosion-protected camera, the AL-BAS101C, has an elegant design and is easy to install. It comes with waterproof and dustproof metal casing made of reinforced steel with special glass rated IP-65. The product also has a Sony Super HAD CCD to ensure image quality. The camera has been certified by the National Explosion Qualification Inspection (its explosion-proof certificate series number is CNEx 04.817U). It supports real-time monitoring and remote management to prevent burglaries.


Its flame-proof camera ,the AL-BA101S, combines a robust casing and DSP camera. The design has fully taken into consideration sensitive, risky gas-filled, dusty environments. Its reinforced design ensures that surface temperature does not change too fast. It supports real-time monitoring and remote management to prevent burglaries. The camera has been certified by the National Explosion Qualification Inspection (certificate series number CNEx 04.527). Sony CCD image sensor with 480-TVL and 420-TVL resolution and 0.45-gamma correction. It uses PAL and NTSC signal systems.


Resolution is752 pixels by 582 pixels or 500 pixels by 582 pixels (PAL), 768 pixels by 494 pixels or 510 pixels by 492 pixels (NTSC), with a scanning system of 625 lines and 50 fields per second (PAL), and 525 lines and 60 fields per second (NTSC). Electronic shutter speed is 1/50 second to 1/100,000 second (PAL), 1/60 second to 1/100,000 second (NTSC). It is equipped with 23 IR LEDs, and 3.5-millimeter to eight-millimeter varifocal lenses with view angle from 40 degrees to 87 degrees. The camera provides auto white balance, an internal synchronization system, IR distance of 25 meters with an S/N ratio of more than 48 dB (AGC off), 12-volt ∮5 percent DC and 24-volt AC power supply.


The VS-59 is a good choice for securing neighborhoods. Operating temperature is from -10 degrees to 50 degrees Celsius and operating humidity is 95 percent RH (maximum). Meanwhile, storage temperature is from -20 degrees to +60 degrees Celsius and storage humidity is 95 percent RH (maximum). The product is made of  aluminum alloy (vandalproof). Camera and brackets incorporate concealed cables. Protection rate is IP-66 and dimensions are 345 millimeters by 110 millimeters by 70 millimeters; it weighs four kilograms. Secunion has explosion-proof cameras for high-risk mineral and gas areas as well as products that are suited for coal mine applications.


Secunion's BA explosion-protected camera, the AL-BAS101C, has an elegant design and is easy to install. It comes with waterproof and dustproof metal casing made of reinforced steel with special glass rated IP-65. The product also has a Sony Super HAD CCD to ensure image quality. The camera has been certified by the National Explosion Qualification Inspection (its explosion-proof certificate series number is CNEx 04.817U). It supports real-time monitoring and remote management to prevent burglaries.


Its flame-proof camera, the AL-BA101S, combines a robust casing and DSP camera. The design has fully taken into consideration sensitive, risky gas-filled, dusty environments. Its reinforced design ensures that surface temperature does not change too fast. It supports real-time monitoring and remote management to prevent burglaries. The camera has been certified by the National Explosion Qualification Inspection (certificate series number CNEx 04.527).

AXIS 233D Network Dome Camera

AXIS 233D Network Dome Camera

Editor / Provider: The Editorial Team | Updated: 3/24/2008 | Article type: Tech Corner

The AXIS 233D network dome camera includes a progressive scan, 35x zoom, fast and precise pan/tilt mechanics and wide dynamic range to ensure superb performance and superior image quality. With 35x optical and 12x digital zoom, the AXIS 233D can zoom in on small or distant objects, allowing license plates to be clearly identified from a distance of 160 meters (525 feet). With traditional interlaced scanning NTSC and PAL techniques, every image consists of two frames captured one right after the other; these are then merged. This results in degraded quality when freezing images in recorded video. The camera also has electronic image stabilizers (EIS) that reduce effects from vibration caused by traffic or wind, giving sharper images.

The AXIS 233D offers MPEG-4 and Motion JPEG. Video streams can be optimized for image quality and bandwidth by configuration of frame rate, resolution, compression level and format, providing up to 30 frames per second in 4CIF resolution in all compressions. The freeze function holds images while moving between presets, making for easier operation. The e-flip electronically inverts images by 180 degrees when following objects moving under the dome.

KEY FEATURES
 35x zoom
 Fast, precise pan/tilt mechanics
 Wide dynamic range (WDR)
 Progressive scan
 Electronic image stabilizer (EIS)
 Simultaneous Motion JPEG and MPEG-4
SUPPLIER
Axis Communications
URL
www.axis.com

Watching for Forest Fires

Watching for Forest Fires

Editor / Provider: a&s International | Updated: 3/18/2008 | Article type: Hot Topics

Forest fires present peril to the environment, infrastructure and human lives. Most of them can be prevented or considerably minimized with timely detection and a fast response. Great efforts for technical developments, such as remote surveillance, are made to prevent forest fires more efficiently.

With the aggravation of global warming, climate change significantly influences ecological systems. The average global surface temperature has increased 0.9 degrees Celsius since 1960. The Intergovernmental Panel on Climate Change predicts it will get even hotter, increasing from 1.1 to 6.4 degrees Celsius, during the 21st century. Extreme weather and failure to reach environmental equilibrium is expected to increase forest fires.

According to a report, forest fires, including using fires to clear tropical rain forests, will halve the world forest stand by the year 2030. In Europe, up to 10,000 square kilometers of vegetation are destroyed by fire every year, with another 100,0000 square kilometers in North America and Russia. ¨Forest video surveillance is a niche but fast growing market. Southern Europe and California are the most important among the main markets, because of the extremely high number of fires, particularly during the summertime," said Raffaella Amoroso, Marketing Manager of Fluidmesh Networks.

With the observable risks, forest fire surveillance demands substantial attention. ¨It is very new, including new technologies and new requirements," said Wai King Wong, Country Manager, Axis Communications Australia and New Zealand. Forest fire surveillance plays a vital role in all spheres of forestry. Advanced solutions include video surveillance systems integrating remotely controlled video cameras to monitor multiple sites. A remote monitoring center is equipped with video presentation and video storage devices, which are connected by wired or wireless Internet to remote video cameras.

The cameras usually require zoom, so monitoring staff can easily inspect areas. Axis offers a dome camera with powerful 35x optical and 12x digital zoom, enabling long distance tracking of moving objects and great detail. As infrared cameras typically have lower resolution and are less durable, digital CCD cameras are mainly deployed for forest surveillance. Moreover, weatherproof housing, high resolution and vibration resistance are required for forest fire cameras.

Video Analytics on the Way

IMS Research forecast the world market for video smoke detection (VSD) to grow at a compound annual growth rate of 38.8 percent, reaching US$36 million by 2011. VSD is expected to become an indispensable solution for detecting the start of a forest fire before it causes any real damage. ¨Utilizing video analytics software for forest surveillance is required, as it helps the authority to constantly monitor and provide accurate alerts on security breaches and forest fires, et cetera," said Kevin Lee, Director of APAC Sales and Marketing for Seagate Technology.

VSD features comprehensive monitoring of large areas with a rotating, high-resolution camera system and automatic recognition of smoke clouds by computeraided image processing. According to an IMS Research report, most VSD technology has been server-based, but the software is increasingly being embedded into video surveillance devices, such as network cameras. This is expected to bring solution costs down, making it more affordable. IMS predicts that as suppliers gain further legislative approval and market experience, VSD will increasingly be used.

A solution from axonX embeds fire and smoke detection analytics onto IP cameras. The camera is then networked to a network video recorder (NVR), where video and alarms are recorded. It is capable of detecting and triggering alarms for events including flames, reflected fire light, smoke plumes, ambient smoke and intrusion detection. ¨We use standard IP transmission protocols such as Internet or cellular wireless to communicate alarms and video," said Mac Mottley, CEO of axonX. Once an alarm occurs, the camera can be signaled through contact closures or by digitally streamed transmissions over IP.

axonX is conducting a pilot project with the Maryland Department of Natural Resources. There are fire towers located throughout Maryland forests, which typically have a small building attached. axonX will install eight IP cameras on a tower and place the NVR in the building. Mottley said, ¨We are looking at a wireless cellular communication solution. When a smoke cloud is detected, the camera records it to initiate the response."

¨Nonetheless, the system has not been widely applied because we just finished indoor testing of the network cameras and have not tested extensively outdoors yet," Mottley said. ¨It is hard to light a forest fire to test your system. That is why working with the Maryland Department of Natural Resources is so important, because they can place us in a tower that overlooks an area that does controlled burns."

Axis is also dedicated to developing cameras with video analytics. Yet accuracy and reliability concerns for automatic VSD remain due to weather conditions, light levels, and so on. Meanwhile, the processing power required is still rather high, Wong said.

Storage

Long-term archiving and analysis of video are growing trends in the field. The need for large capacity and reliable hard drives — with data integrity being an issue of utmost importance — is key to the success of a forest surveillance installation.

For surveillance storage, all the cameras stream video back to the central monitoring station, which utilizes NVRs or video management software to monitor the cameras and record their footage. ¨With the usage of video analytics or intelligent video surveillance in such applications, high capacity storage is often required to enable the recording at high resolutions and frame rates," Lee said. ¨Superior hard drives are thus critical."

Seagateˇs hard drives provide SATA storage for multidrive enterprise network surveillance applications, and for higher-end applications like IVS and IP surveillance. The hard drives can store up to a terabyte, with higher resolution and longer archival periods for outdoor surveillance, digital video recorders. Energy saving technology minimizes the amount of power required. The drives can operate in extreme environments subject to temperature, humidity, altitude and vibration.

Lee said, ¨IP will be the most suitable application for forest surveillance, (since) the requirement of storage will be important as a backup plan in case of network failure.〃 With the large amount of bandwidth required for video transmission, storage on the edge becomes much more essential, allowing compressed video to be transferred over the network as needed, instead of in real time.

Transmission Technology

Forest fire surveillance relies on network connectivity since the video streams from cameras in remote areas must arrive to a control room many kilometers away. Several transimssion methods like wired, wireless, mobile, satellite and microwave featuring different applications are available.

Dual-frequency wireless mesh technology by Fluidmesh is specially designed for video and data streaming, transmitting simultaneously on the 2.4 GHz and 5 GHz range. The wireless mesh architecture enables reliable and redundant networks, where every unit can route packets around physical obstacles, sources of interference or low-quality links. It also has an IP 68-rated submersible enclosure capable of working in harsh environments. With low power consumption below 10 watts, the product usually incorporates solar and battery-powered solutions. This allows for easy installation in environments with electricity. ¨Using a mesh network can greatly increase the reliability of the system, providing multiple paths to reach the control room and recording site," Amoroso said.

Mobile networks — meaning 3-G networks such as GPRS, CDMA or WLAN — are another transmission solution for real-time forest fire surveillance. ¨In Australia, we are using Next G cards with the 2100 MHz 3G technologies run by Telstra, delivering turbo-charged speeds for data and downloads,〃 Wong said. ¨The card has been inserted on the router devices or routers, linking access to the cameras."

Monitoring companies can automatically dispatch resources to the exact location while providing important real-time information for effective planning and preparation. Mobility plays a major role, as the entire system can be taken down in five minutes and deployed at another location in five minutes.

Additionally, satellite and microwave transmissions with good bandwidth and quality image resolution are suitable for monitoring forests remotely. However, microwaves are highly susceptible to attenuation by the atmosphere and limited to line of sight transmission links.

Solar Power and Easy Installation

Forest fire surveillance is limited by the extensive area that needs to be covered for power or communication infrastructure. As a result, Wong said, energy supply is fundamental and crucial to carrying on surveillance systems.

Solar panels generating electric current from sunshine provide an effective method to operate surveillance systems. The current flows to a device that regulates the voltage and current and also controls the charging of the battery bank. However, it is difficult to produce energy with solar panels alone, due to unpredictable weather. The best solution to power the cameras and transmission devices would be to combine solar panels with wind turbines or batteries. Furthermore, maintaining low power consumption of devices is imperative as well. ¨Currently, we have done mobility solutions deployed with mobile networks and solar panel systems," Wong said.

For an easier installation and better connectivity, ¨a partner we have has designed the camera in the housing and customized the poles," Wong said. ¨Basically, every component needed is configured in one device. You can bring the pole to wherever you want and plug in the solar panel. Once the camera is on, you are automatically connected to the server."

Although there are no specific market figures or statistics showing market size of forest fire surveillance, in almost every country which encounters high risk of forest fires are investing the technical development of forest fire surveillance systems. ¨If a relatively stable well-performing system can be designed, and the communication and power issues resolved, then there would be a quite substantial worldwide market," Mottley said.

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