Intrusion Detection & Lighting
Longwatch utilizes intrusion detection devices to provide advanced warning and threat assessment by triggering of alarms and video event clip recording. Longwatch has the ability to correlate the use of multiple alarms and detected threat contacts to quickly identify "targets of interest". Once detected, Longwatch uses intelligent video recording to capture the specific event and then dispatch the video clip and alarm to the appropriate personnel.
The reliability of these intrusion detection devices plays a large role in how efficiently the Longwatch system operates. A system that bears the burden of false alarms will utilize more network bandwidth through the transfer of unwanted video clips. The storage of these clips will in turn increase hard disk consumption and system maintenance requirements. More importantly, false alarms will de-sensitize the Longwatch user, which may lead to ignoring of otherwise important security alarms in the field.
Intrusion detection devices consist of:
(click the text to jump to that section)Video Analytics
Video Analytics is a process in which live video is analyzed in order to determine comprehensive information about the content of that video, specifically movement. Each pixel of the video image is processed by specialized software algorithms to look for minute changes in object size, color and brightness. Longwatch utilizes the latest in video analytics technology to detect movement and trigger video event clip recording. This technology may also reside within certain IP based cameras and video servers. For example, Longwatch can utilize the video analytics technology of Axis video products to trigger event clips.
In reality, video analytics technology is still very much in its infancy. False alarms are a very common occurrence in most analytic applications. Due to this, Longwatch recommends that video analytics for motion detection only be used in indoor environments. For outdoor applications, upwards of 90% efficiency can be had with the use of hard wired motion detection devices.
Motion Sensors
Motion detection devices use infrared or laser light technology to electronically identify movement within a certain area. Once detected, these devices send a signal to the Longwatch Video Engine to trigger the recording of a video event clip. These devices come in all shapes and sizes and range in detection ability. Common motion sensors are usually capable of covering a 40 ft. by 40 ft. area and are suitable for most applications. Wide angle and long range devices are also very common and can be used to tailor your event detection application.
Examples
Short Range: Optex VX-402
Must be hard wired for power and output to the Video Engine or PLC. 40ft x 40ft wide angle range is extremely efficient.
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High Efficiency/Short Range: Optex HX-40
A high mount outdoor detector for high-end applications. It has more advanced efficiency logic than standard motion sensors.
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Long Range: Optex LX-802N
Hard Wired with a range of 80ft x 6.6ft.
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Long Range/Wide Angle: Optex LRP-5030S
Hard Wired with a long, wide angle range of 165ft x 100ft.
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Super Long Range: Optex LRP-180QH
Hard Wired with a long, narrow range of 595ft x 13ft.
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Wireless, Battery Operated: Optex VX-402R
Wireless and battery operated with a 40ft x 40ft detection range. No wiring required but the battery must be replaced every 2 years.
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Dual Horizontal, Perimiter Detection: Optex BX-80N/80NR
Hard wired or battery operated, providing horizontal beam detection on one or both sides of the device. In most cases this
device is attached to the outer wall of a building to cover the perimeter and/or multiple doors. It offers a 40ft range or
80ft when utilizing both sides.
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Photobeam Sensors
Photobeam sensors, utilizing the same technology as motion sensors, provide an invisible fence of light by shooting one or more beams across the perimeter of an area. When one or more of these beams of light are broken, an alarm condition is created. Photobeams consist of two separate devices; the transmitter of the beam and the receiver. In some cases, two beams or more must be broken in order for the alarm condition to occur allowing small animals to pass by without triggering a false alarm. In this way photobeams can be considered some of the most efficient intrusion detection devices available today. Photobeams can cover a long, narrow range and are most suitable for fence, or building perimeter detection. Photobeams are also commonly used for safety measures for example, covering the opening to machinery and subsequently stopping mechanical movement if the beam barrier is broken.
Examples
Short Range: Optex AX-100/200PLUS
Hard wired with 100 or 200 ft. range. These units provide extremely efficient outdoor detection capability.
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Long Range: Optex AX-350/650TF
Hard wired with a long range of 350ft. or 650 ft.
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Wireless, Solar Powered Housing: Optex AX-7020 - Solarbeam Tower
With the ability to house any Optex Photobeam device, the Solarbeam Tower is fully solar powered and wireless.
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Surface Contacts and Switches
Surface contacts and switches are the most common, efficient, and inexpensive intrusion detection devices available today. In most cases these devices are connected to doors and windows but can be applied to almost anything that opens and closes. These contacts and switches send a signal on an open or close event that will trigger an alarm condition and within Longwatch, initiate video event clip recording.
Examples
Standard Surface Contact: United Security Products 39RSP
Standard surface contact with Rhodium metal contacts and designed for a 1" gap.
Dimensions: 1/2" x 1/2" x 2-1/2"
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Commercial Surface Contact: United Security Products 400-SP Series
Commercial grade surface contact supports a wide 2 to 2.3 inch gap.
Dimensions: 1/2" x 1/2" x 4"
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Industrial Surface Contact: United Security Products 500-SP Series
Stainless Steel enclosure with 24 inch armored cable.
Dimensions: 1" x 1/2" x 3"
Models:
500-SPCC - 2.5" Gap
500-SPOC - 2" Gap
500-SPDT - 2" Gap
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Micro Miniature Surface Contact: United Security Products 90-SP Series
Small size and appearance for covert applications. Support for .60 inch gaps.
Dimensions: 1" x 1/4" x 1/8"
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Lighting
Determining the proper lighting for an application is an important part of defining a total camera solution. The camera's lumen rating directly effects it's ability to see in low light conditions. I recommend a two stage implementation process to determine if your camera has what it takes to capture video in the given lighting conditions. First stage is to install the camera and view it's picture at the darkest time of the day. If the image is acceptable, no additional lighting is necessary. If it's not acceptable, additional illumination may be required.
Examples
Bosch EX12LED
Temperature Range: -58F to 140F
Distance: 10ft to 40ft
Bosch EX26LED
Temperature Range: -58F to 140F
Distance: 60ft
Bosch UF100
Temperature Range: -22 to 122F
Distance: 45ft to 330ft
AEGIS UFLED White Light
Termperature Range: -58 to 122F
Distance: 50ft to 195ft
AEGIS UFLED Intelligent-IR
Termperature Range: -58 to 122F
Distance: 65ft to 720ft
Extreme CCTV SuperLED
Distance: 595ft range
Extreme CCTV UF500 Series
Distance: 700ft range
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