Accurate temperature detection with thermal cameras

Issue 4 2020 CCTV, Surveillance & Remote Monitoring

The world is in the grip of a pandemic which we were not prepared for and which has changed everything. From social distancing to being quarantined, almost every person in the world has experienced the effects of the coronavirus, even if they have not been infected.

We know the danger is nowhere near over, but we have to get back to work and out of the house. In order to facilitate the freedom of movement as well as being able to conduct business safely, organisations have to ensure that their places of operation are safe. In addition, they need to do what they can to identify people who may have the virus and exclude them from coming into contact with healthy co-workers, customers or service providers.

One of the most common symptoms of the COVID-19 virus is running a fever. Organisations in the public and private sectors are therefore looking for ways in which they can identify people with a high temperature quickly and accurately. This will not only protect others, but also allow those who have been diagnosed with the virus to receive treatment.

A thermal solution

One way of doing this is with Infrared thermometers, but this requires the device to be held close to the person for a few seconds. Not only is the person measuring the temperature too close to the subject, running the risk of being infected, but it takes too long in environments where there are many people moving about.

Thermal cameras, on the other hand, can handle this task with ease, and safely. Already proven in the security market, these cameras provide accurate body temperature readings that can quickly identify people who have elevated body temperatures and may be infected. Of course, a high temperature does not mean a person definitely has the virus, but it is a safe starting point when keeping large numbers of people safe.

Examples of where thermal cameras can and have been used successfully as a prevention mechanism include in airport check-in or boarding queues, at shopping centres, at religious or sporting events, education campuses, hospitals and so forth.

Some people complain that thermal cameras are more expensive than other devices, such as Infrared thermometers. However, it must be noted that a thermal camera can measure the temperature of multiple people at once without requiring any human interaction – the technology does the work and raises a warning when a person with an elevated temperature is detected. Most importantly, it can be done while maintaining a safe distance from subjects, thereby preventing the spread of the disease.

In addition, thermals can measure an individual’s temperature to an accuracy of within 0,3°C in any lighting conditions when combined with the latest artificial intelligence algorithms as well as ‘blackbody devices’, which help to calibrate the temperature measurement process in order to ensure very accurate readings.

Data collected can further be matched with facial recognition systems to rapidly identify those who may be ill, or omit those who have already been tested and cleared. The data can also be saved on servers for future reference, if required.

Thermal solutions from Dahua

Dahua Technology has offered the security industry thermal solutions for many years and has recently launched two thermal cameras specifically for accurate temperature measurement.

The DH-TPC-BF3221 is a thermal network hybrid bullet camera and the DH-TPC-SD8421 is a network hybrid speed dome camera, both recording thermal and visual light images. The thermal cameras can accurately measure temperatures between 30°C and 45°C, with an accuracy of 0,3°C when used with Dahua’s blackbox device – and to an accuracy of 1°C without the blackbox.

For environments where additional safety is required, Dahua also provides a range of acrylic glass temperature measurement turnstiles, which can be integrated with other identifications solutions, from cards to biometrics.


Credit(s)




Share this article:
Share via emailShare via LinkedInPrint this page



Further reading:

Mitigating the human risk
Issue 5 2020, Managed Integrity Evaluation, Technews Publishing, iFacts , CCTV, Surveillance & Remote Monitoring
Hi-Tech Security Solutions asked Jennifer Barkhuizen and Jenny Reid for some information around background screening and vetting of potential new hires.

Read more...
Dahua launches ECO Partner Programme
Issue 5 2020, Dahua Technology South Africa , News
Dahua Technology has launched its new technology partner programme, the Dahua ECO Partner Programme.

Read more...
Teaching old cameras new tricks
Residential Estate Security Handbook 2020, Deep Data , CCTV, Surveillance & Remote Monitoring
Dr Jasper Horrell and Mark Smuts from DeepAlert reveal how estates can upgrade their existing surveillance infrastructure to include the latest AI-enhanced analytics, without buying new hardware.

Read more...
Thermal cameras with artificial intelligence
Residential Estate Security Handbook 2020, Dahua Technology South Africa , Perimeter Security, Alarms & Intruder Detection
Dahua Technology showcased solutions that are important to residential estates, namely perimeter protection.

Read more...
Thermal continues to evolve
Residential Estate Security Handbook 2020, Technews Publishing, Axis Communications SA, Bosch Building Technologies, Dahua Technology South Africa , CCTV, Surveillance & Remote Monitoring
Thermal cameras have made an enormous impact to perimeter security, with more to come as artificial intelligence enhances analytics.

Read more...
Automated estate protection
Residential Estate Security Handbook 2020, Axis Communications SA , CCTV, Surveillance & Remote Monitoring
Marlenique Estate makes use of an end-to-end Axis Communications solution, installed by Energize Technology Africa for automated security. Automated estate protection.

Read more...
Integrated security management system
Residential Estate Security Handbook 2020, Protoclea Advanced Image Engineering , Products, CCTV, Surveillance & Remote Monitoring, Integrated Solutions
Phorcas is a security information system developed by Protoclea designed to integrate multiple sub-systems into a powerful crime fighting solution.

Read more...
Serverless ANPR solution
Residential Estate Security Handbook 2020, XtraVision , CCTV, Surveillance & Remote Monitoring, Products
Serverless ANPR automatically controls the movement of up to 1000 listed cars through barriers and provides carpark management information.

Read more...
Bosch launches a fully open camera platform
Residential Estate Security Handbook 2020, Bosch Building Technologies , Products, CCTV, Surveillance & Remote Monitoring
Bosch has announced the launch of INTEOX, a new camera platform designed to modernise the security and safety industry.

Read more...
IP 3000i cameras with built-in analytics
Residential Estate Security Handbook 2020, Bosch Building Technologies , Products, CCTV, Surveillance & Remote Monitoring
Bosch IP 3000i cameras extend smart video surveillance to general security applications.

Read more...