Patented and Proven
Feedback Solution’s real-time occupant count-based Demand Control Ventilation
– the GHG reduction solution for our time.
Real-Time Occupant Count-Based HVAC Optimization
Heating, Ventilation, and Air Conditioning (HVAC) systems account for over 40% of energy consumption in commercial and institutional buildings, contributing significantly to the 28% of global CO2 emissions from building operations.
Many legacy HVAC systems operate inefficiently, running at maximum capacity and ventilating based on design assumptions rather than actual occupant demand. This leads to excessive energy use, higher operational costs, and unnecessary wear and tear on critical HVAC equipment.
Feedback Solutions addresses this inefficiency by leveraging best-in-class people-counting sensors and our patented technology platform to provide highly accurate, real-time occupant counts within HVAC zones. This data is seamlessly integrated with your building systems via BACnet/IP, cloud platform, or DDC controllers, enabling real-time ventilation optimization based on actual demand.
The results? Up to 40% energy savings, reduced GHG emissions, extended equipment lifespan, and compliance with ASHRAE ventilation guidelines — all while maintaining a comfortable and healthy environment.
Real-Time Occupant Counting
People counting sensors are installed in predetermined targeted zones. Data is delivered in real-time to the Building Automation System so that the HVAC equipment is optimized on a seamless basis.
Track Actionable Data Across Your Portfolio
- Gain a clear picture of how your facilities are being utilized, with detailed insights into daily, weekly, and monthly usage patterns. Leverage this information to optimize staffing, security, and cleaning schedules for greater efficiency and cost-effectiveness.
- Integrate these insights with your Building Management System to streamline operations, reduce energy consumption, and lower GHG emissions — all while maintaining peak performance across your facilities.
Benefits to Our Solution
Lower Operating Costs
Reduce Energy Consumption
GHG Emission Reduction
Track Space Utilization
Reduce Equipment Wear & Tear
Sustainable
IAQ
Ease of
Implementation
Low
CapEx & Attractive ROI
The Sensors
We utilize a number of people-counting sensor technologies. Particularly when there are privacy concerns, we use a ‘time of flight sensor’ installed above an entrance, that measures the time taken for a near-infrared light to bounce back after striking an object. Multiple beams are sent out to measure an array of distances, helping the device’s machine learning technology to build a layered 3D image of what it is observing. The sensor is installed above an entrance. This approach makes our solution “future-proof” in that we are compliant with all existing and anticipated privacy legislation. Our team also elects to utilize stereoscopic and radar based sensor technologies depending on the best fit, based on the customers site conditions.
What the scene looks like from above
What the ToF Sensor Sees
What the AI Sees with Machine Vision
- The General Data Protection Regulation (GDPR) is the toughest privacy and security law in the world.
- The GDPR requires privacy by design.
- Sensors do not have the ability to capture or record personal data.
How Does it Work?
- Feedback Solutions selects and procures the most appropriate combination of 3rd party people counting sensor technology for any given facility. This is an important part of our expertise! We can also use the raw data from existing sensors if a facility already has people counting sensors installed.
- Next steps include hardware installation, appropriate zone creation and assurance of the raw data’s accuracy. (We are able to produce highly accurate real-time occupant counts even when there are multiple entrances and exits, via the application of our proprietary intelligent algorithm running on an Intel IoT edge device)
- Zoned, real-time occupant counts are then delivered via BACnet/IP to the Building Automation System so that the HVAC equipment is optimized automatically, on a seamless basis.
- Data from IAQ (indoor air quality) sensors can also be layered into the BAS sequence of operations to provide the ultimate balance between sustainability and wellness.
Feedback collaborates with clients’ BMS suppliers to define a streamlined sequence of operations that adjusts fan speeds and damper positions in real-time. This ensures the precise amount of outdoor air is supplied based on actual occupant numbers.
These dynamic adjustments can reduce HVAC-related energy consumption by up to 40%, significantly lower GHG emissions, and minimize wear on critical HVAC equipment — all while meeting ASHRAE guidelines and maintaining optimal Indoor Air Quality (IAQ).
This solution is immediately deployable, providing a practical alternative to deep retrofits and helping organizations meet GHG reduction targets without disrupting operations.
