Nuisance alarms
Wind, wildlife, vegetation and weather trigger fence sensors and video analytics. Operators learn to ignore alarms, and the real one gets lost.
Access Monitoring, Perimeter Security and Protection
Fences don’t watch themselves. LiDAR does, day and night.
CRATUS provides access monitoring, perimeter security and protection with hemispherical LiDAR, cameras and AI for airports, security checkpoints, military bases, energy plants and other sensitive locations that need protection 24/7. LiDAR detects and tracks people and vehicles in 3D, in darkness, and tells operators where the intruder is now, not only which fence segment alarmed.
- One system for
- LiDAR
- Cameras
- Edge
- AI
Tracked in 3DPosition, path and speed
Protection24/7, no lighting needed
- 24/7Works in darkness without added lighting
- 3D zonesVirtual fences with height, distance and direction
- Track, not triggerPosition and path of each person or vehicle
- Camera cueingTracks point cameras to the right place
The challenge
Why perimeters are hard to protect.
Long fences, dark nights and open approaches stretch every security team. Most alarms say something happened; few say where it is now.
Darkness and distance
Cameras need light and see in 2D. Long perimeters at night need many cameras and lighting, and still miss what is in the shadows.
An alarm is not a location
A fence alarm tells you which segment was touched. Responders need to know where the person went next.
CRATUS tracks people and vehicles in 3D, filters nuisance alarms by size and behavior, and cues cameras to the target.
See the approachWhere it is used
Sites that need protection 24/7.
Each site gets zones, rules and responses that match its risk.
- AirportsAirside perimeters, gates and restricted areas.
- Security checkpointsLanes, tailgating, wrong-way movement and counts.
- Military basesPerimeters, entry control points and restricted areas.
- Energy plantsPower plants, substations, solar and storage sites.
- Water and utilitiesTreatment plants, reservoirs and pump stations.
- Data centersFence lines, yards and loading areas.
- Ports and logisticsTerminals, yards and container stacks.
- Industrial and chemicalPlants, tank farms and storage yards.
Side by side
Perimeter technologies compared.
CRATUS combines LiDAR with cameras so each does what it does best.
| Fence sensors | Cameras with analytics | LiDAR | |
|---|---|---|---|
| Detects | Contact or vibration on the fence | Motion in the image | People and vehicles in 3D |
| Location | Fence segment | Position in the image | Position, path and speed |
| Darkness | Unaffected | Needs lighting or thermal | Unaffected |
| Approach before the fence | No | Yes, in view | Yes, all around the sensor |
| Nuisance sources | Wind, animals, debris | Shadows, headlights, weather | Filtered by size and behavior |
| Visual verification | No | Yes | Cues cameras to the target |
General characteristics of each technology class. Weather such as heavy fog, rain or snow reduces LiDAR range; layouts include overlap to account for it.
Our approach
Detect, track, verify, respond.
Hemispherical and long-range LiDAR, cameras, edge computing, software and AI, engineered as one system by one team.
Sensing
Hemispherical LiDAR covers gates, yards and corners all around the mounting point; long-range LiDAR covers fence lines and open approaches. Cameras provide visual verification and are cued to each LiDAR track.
- Hemispherical LiDAR at gates and yards
- Long-range LiDAR along fences
- Cameras for verification
Edge computing
An edge computer at the site merges every sensor into one live picture and computes the analytics locally, so results, not raw sensor streams, leave the site over Ethernet, Wi-Fi or cellular.
- Multi-sensor fusion on site
- Analytics computed at the edge
- Ethernet, Wi-Fi or cellular
Software & dashboards
A site map with live tracks, zones and alarms, rules by zone and time of day, and an event record with the track and camera view for every alarm.
- Live map with tracks
- Rules by zone and schedule
- Event record for every alarm
AI
AI classifies each object as a person, vehicle or animal by its 3D shape and movement, filters nuisance sources and flags behavior such as loitering, running or climbing.
- Person, vehicle, animal
- Nuisance alarm filtering
- Loitering and climbing behavior
What we deliver
Access monitoring and perimeter protection.
From one gate to a full site perimeter.
Perimeter intrusion detection
People and vehicles approaching, touching or crossing the fence, tracked in 3D.
Sensing · AI
Access points and checkpoints
Counts, tailgating, wrong-way movement and dwell at gates and checkpoint lanes.
Sensing · Software
Restricted zones
Virtual zones with height and direction rules inside the site.
Software
Person and vehicle classification
Objects classified by 3D shape and movement, with animals and debris filtered out.
AI
Camera cueing and verification
Each track points the nearest camera to the target so operators see it immediately.
Sensing · Software
Integration with security systems
Alarms and tracks sent to your existing security platforms, with custom integration by CRATUS engineering.
Software
The CRATUS security system
Sensors and software for 24/7 protection.
Sensor types and positions follow the site: hemispherical where coverage must wrap around, long-range where the fence runs straight.
CRATUS
Hemispherical LiDAR
Gates, yards and corners
- All-around coverage
- Works in the dark
- Pole or wall mount
Covers everything around its mounting point, so gates, corners and yards have no blind side.
CRATUS
Long-range LiDAR
Fence lines and approaches
- Long reach
- Directional
- Outdoor rated
Watches straight fence runs and open ground outside the fence.
CRATUS
Cameras
Verification
- Cued by LiDAR
- Day and night models
- Evidence
Turned to each LiDAR track so operators see what triggered the alarm.
ASSET-Rx
Edge computer
ASSET-Rx EDGE
- Sensor fusion
- Classification
- Runs on site
Fuses all sensors, tracks and classifies objects at the site.
CRATUS
Security dashboard
Map, alarms, events
- Live tracks
- Zone rules
- Event record
The site map, alarms and evidence for the control room.
CRATUS
Integration
Your security platform
- Alarm outputs
- Track data
- Engineering services
Sends alarms and tracks to the systems your team already uses.
One system
Sensors, edge, software and AI from one team
CRATUS surveys the site, plans coverage, supplies the sensors and edge computer, sets up zones and rules, and supports the system after commissioning.
All CRATUS productsCRATUS securityStack
AI
- Classification
- Nuisance filtering
- Behavior
Software
- Site map
- Zone rules
- Event record
Edge
- Sensor fusion
- Tracking
- Camera cueing
Sensing
- Hemispherical LiDAR
- Long-range LiDAR
- Cameras
What to send us
These details let CRATUS plan coverage for your site.
- Site type and site plan
- Perimeter length and fence type
- Gates, checkpoints and entry control points
- Restricted zones inside the site
- Existing cameras, lighting and fence sensors
- Security platform the alarms should reach
- Power and network along the perimeter
- Weather and environmental conditions
How we work
Surveyed first, then installed.
Every site is planned from its layout and risk, so coverage, zones and rules are set before installation.
- 01
Site details
Site plan, perimeter, gates, existing systems and threats of concern.
- 02
Coverage plan
Hemispherical and long-range LiDAR and camera positions planned for full coverage.
- 03
Install
Pole and wall mounting, power, network and integration with your systems.
- 04
Commission
Zones, rules, schedules and responses set up and tested with walk tests.
- 05
Operate & support
24/7 monitoring by your team, with engineering support and updates.
Standards & practices
Planned around the requirements you work to.
Security installations at critical sites follow industry, utility and government requirements.
- NERC CIP-014Physical security for transmission stations and substations
- NFPA 731Installation of electronic premises security systems
- IEC 62676Video surveillance systems for security applications
- ANSI/ASIS PAP.1Security management for physical asset protection
- ISA/IEC 62443Security for industrial networks and devices
- NIST SP 800-82Operational technology security
- IEC 60529Ingress protection for outdoor equipment
- IEC 60825-1Eye-safe laser classes
Compliance decisions rest with the site owner and the applicable authority. CRATUS designs and documents installations to support your security plan and audits; we don’t self-certify.
The basics
How does LiDAR protect a perimeter?
LiDAR measures the area around it in 3D and detects people and vehicles by shape and movement. It tracks each one, so operators see where an intruder is and where they are going, not only which fence segment alarmed.
Why hemispherical LiDAR?
Because it sees all around and below its mounting point. At gates, corners and yards there is no blind side, and one sensor covers an area that would need several cameras.
Does it work at night?
Yes. LiDAR supplies its own light, so darkness does not affect detection, and no perimeter lighting is required for the LiDAR.
Alarms
How does it reduce nuisance alarms?
By classifying objects in 3D. A person, a vehicle and an animal have different sizes and movements, so wildlife, blowing debris and vegetation can be filtered out instead of raising alarms.
What about fog, rain and snow?
Heavy fog, rain and snow reduce LiDAR range. Layouts include overlap between sensors, and weather-related returns are filtered, so detection holds in typical conditions.
Can it work with our existing cameras and security platform?
Yes. LiDAR tracks can cue existing cameras, and alarms and tracks can be sent to your security platform, with custom integration by CRATUS engineering where needed.
Access points
Can it detect tailgating at gates and checkpoints?
Yes. People and vehicles passing a gate or lane are counted and compared with access events, and tailgating, wrong-way movement and loitering raise alarms.
Does LiDAR record identifiable images?
No. LiDAR records 3D points. Identification comes from your cameras and access control, where your policies apply.
Working with CRATUS
How do we get a proposal?
Send us the site layout, what you need to measure and how the space is used. A CRATUS engineer replies with questions, a sensor layout and a phased plan.
Can you work with our integrator, security or IT team?
Yes. CRATUS works directly with operations teams, system integrators and IT departments, and provides network requirements, installation instructions and remote support during commissioning.
Talk to a CRATUS engineer
Need to protect a site 24/7?
Send us the site plan, perimeter length and gates. A CRATUS engineer will reply with a coverage plan.