Most visible cameras are designed to show detailed colored images during the day and switch to monochrome when light levels drop. As a result, a person may be difficult to detect from great distances. Thermal cameras detect objects by their heat signature.
- Built-in siren and flashing white light for Perimeter Protection
- Detects heat signature of humans and objects
- Identify potential threats from longer distances
- Less susceptible to false alarms (shadows, sun reflections, changing lighting conditions, insects, and moving tree branches)
- Works in both day and nighttime scenarios
- Ability to detect heat sources under most lighting conditions
- Provides an advance warning when objects start to elevate in temperature
Excessive Heat Detection
Deterrent for Intruders
Smoke detectors generate an alarm only when a fire, smoke or high temperatures have reached the detector’s range, which means that the fire has already had time to develop and spread. For applications such as warehouses, manufacturing facilities, and commercial buildings, ceilings are often very high so it takes longer for the smoke to reach a smoke detector. As a result, seconds are wasted before a hazard is detected, which may lead to the loss of life and property. In comparison, a thermal camera provides an advanced warning when an object begins to get hot. These precious seconds offer more time for responders to get the potential hazard under control or turn off equipment before further damage is done.
Problem: A thermal camera should be installed to complement and add value to an overall solution versus the primary form of security. Single-sensor thermal cameras provide a heat signature of people, animals or objects but lack usable identification-level images, compared to detailed color images offered by visible-light cameras. For those details, a separate visible-light camera is required to identify facial details and clothing color. However, installing two single sensor cameras increases installation time, cost and future maintenance.
Solution: Thanks to recent advances in technology, Dahua thermal cameras combine multiple sensors in one device. These hybrid thermal cameras – a single device that incorporates a thermal and visible-light imager into one housing – address many of the safety and security challenges for locations that are otherwise difficult to monitor. Now integrators and security professionals alike can utilize both visible and thermal technologies simultaneously to overcome any type of lighting challenge.
Intelligent Solutions for Thermal
- Perimeter Protection
- Reduce False Alarms
- Deter an Event
- Excessive Heat and Smoking Detection
- Fusion Mode
- 24/7 Monitoring
- Temperature Monitoring
With Dahua’s Entry-level Visible-Thermal Crossover (EVX) series, customers can identify target information and facial details with the visible lens, and shapes, such as a person climbing a fence at night, with the integrated thermal lens.
Dahua’s EVX series cameras provide reliable intruder-detection for perimeter security. With the ability to set intrusion analytics during the day for the visible-light imager and at night for the thermal imager, the EVX series provides optimal coverage for most lighting conditions.
The intelligent human/vehicle classification feature helps reduce false alarms by not triggering upon animals or under adverse weather conditions.
When the camera detects an incident, it triggers the white-light LED and the speaker to produce a visible and an audible alarm, and then records a snapshot. The alarm can also be pushed to DSS VMS Express and DMSS mobile app to inform operators in a timely manner.
- Deploy the white light and loudspeaker alarms simultaneously when an abnormal behavior is detected.
- Configure the white light and loudspeaker separately with the ability to upload a custom alarm message.
- Actively deter intruders before an incident occurs.
With built-in temperature functionality (Cold/Hot Spot Trace), the camera can detect a rapid rise in temperature over a short time and issue an alarm even at long distances. Because thermal cameras are sensitive to temperature, they provide higher detection accuracy than standard cameras, providing first responders more advanced warning of the hazard. Additionally, the EVX Series can send an alarm when it detects a person smoking a cigarette. The visual sensor allows for identification while the thermal sensor detects the heat signature.
A standard visible-light camera can easily miss a person or an object hidden behind an obstacle. Hybrid thermal cameras with fusion mode, however, never misses a heat signature. These cameras display a heat signature with a color overlay to help identify a person behind a tree, a fence, or other obstacle. In the Fusion image below, the red box highlights a heat signature with an orange overlay behind the tree, signifying a person is behind the foliage. In the Visible-light image on the left, the person behind the tree is undetectable. Another benefit of Fusion mode is that by fusing both the visible and thermal modes into one image, a channel on the NVR can be saved to add another camera.
No need to worry about the interference of bad environmental conditions such as low ambient light, rain, smoke, foliage and glare.
Select models provide remote temperature monitoring with the ability to trigger an alarm when temperature exceeds a set threshold. This feature is ideal for industrial applications where it is dangerous for human presence or when maintaining a consistent temperature is vital (-T models only).
In the example below, a dairy farmer uses a temperature monitoring thermal camera to monitor pregnant cows. When the cow’s temperature begins to accelerate, an alarm is sent as an indicator labor has started.
Thermal for perimeter protection is an excellent first line of defense for remote sites that require round-the-clock monitoring.
Thanks to longer detection range, the heat signature of people or vehicles are detected earlier, providing advanced warning to personnel.
Combustion Monitoring for Mulch Piles or Laundry Facilities
Composting is Nature’s way of recycling organic material such as leaves, twigs, grass clippings, and vegetable food waste. However, hot composting piles, depending on the pile size and mix of materials, may generate high temperatures up to 180° (82° C).
On hot days, the dry materials on top of these piles can spontaneously combust so careful monitoring is required.
Overheated Circuits, Motor Monitoring and Gas Leaks
Mechanical equipment failure is usually preceded by excessive heat caused by a number of factors. Total downtime costs include parts cost, labor and potential parts shortages which increase loss of revenue when offline. EVX models monitor for a rapid rise in temperature, providing advanced notice before a fire starts or the equipment suffers catastrophic failure.
Video Management System (VMS)
Our Digital Surveillance System (DSS) VMS integrates with all Dahua product and 3rd party ONVIF cameras, providing a hub-and-spoke approach, allowing users to:
• Scale to additional locations
• Increase number of cameras affordably
• Instantly share usable data across multiple locations
• View analytics in one central platform
• Save with no recurring license fees
• Receive an excessive heat alert via a NVR, DMSS, or DSS.
View and manage all your regular and thermal cameras from one central location in real time.
Monitor all your event notifications. Get notified when an IVS rule or SMD is triggered.
Easily create reports and store records of incidents to report to the authorities.