Smart Detection — Motion 2.0 Setup
Purpose
This document covers the setup of Hikvision's AcuSense smart detection features — Motion Detection 2.0, Line Crossing, and Intrusion Detection. These are the tools that make the difference between a system that sends meaningful alerts and one that customers ignore because of constant false notifications.
What Is AcuSense / Motion Detection 2.0?
AcuSense uses deep learning AI to classify what is moving in the camera's field of view. It specifically identifies people and vehicles, filtering out everything else: animals, weather, lighting changes, insects.
The result is detection that is meaningful. Alerts are sent only when a person or vehicle enters the scene — not for every pigeon, cat, or passing headlight.
AcuSense requires a compatible DVR/NVR — look for "AcuSense" in the model name (typically /K suffix). Standard DVRs cannot run AcuSense detection.
Method 1 — Standard Motion with AcuSense Filter
The simplest approach. Standard motion detection runs, but AcuSense filters the results — only events classified as people or vehicles trigger an alert or recording.
Main Menu → Camera → Motion
- Select the channel
- Draw the detection zone
- Enable AcuSense filtering
- Select: Human, Vehicle, or Both (recommended)
- Apply
Best for: Most residential installs. Simple to configure, effective in the vast majority of scenes.
Method 2 — Smart Event Detection
More powerful tools using specific geometric triggers. Configure under:
Main Menu → Smart Event
Line Crossing Detection
A virtual line drawn across the frame. When a person or vehicle crosses it in the specified direction, an alert triggers.
Use cases:
- Virtual fence across a driveway entrance
- Line across a side passage or access route
- Perimeter boundary line
Setup:
- Select the channel
- Enable Line Crossing Detection
- Draw the line on the camera image
- Set direction: A→B (into scene), B→A (out), or both
- Enable Target Filter → Human, Vehicle, or Both
- Apply
Intrusion Detection
A virtual polygon. When a person or vehicle enters (or exits, or appears within) the zone, an alert triggers.
Use cases:
- Virtual zone covering a rear garden at night
- Zone covering a car park outside business hours
- Zone covering a door or window
Setup:
- Select the channel
- Enable Intrusion Detection
- Draw the polygon — click to add points, close the shape
- Set trigger action: Entering, Exiting, or Appearing in zone
- Set dwell time (minimum time in zone before trigger — reduces walk-past false detections)
- Enable Target Filter → Human, Vehicle, or Both
- Apply
Linking Smart Events to Recording and Alerts
Configuring the detection is only half the setup. It must be linked to:
Recording
Main Menu → Storage → Schedule → Event
Set the recording schedule to include Event recording for each channel. This captures footage when a Smart Event triggers.
Push Notifications (Hik-Connect)
Main Menu → Configuration → Event → Notification
Enable Hik-Connect notification for each event type (Line Crossing, Intrusion, Motion). When triggered, the DVR sends an alert to Hik-Connect cloud, which pushes a notification to the customer's phone with a thumbnail image.
Confirm the customer has notifications enabled for Hik-Connect on their phone — test this at handover.
AcuSense Smart Search
AcuSense enables fast footage search by detection type:
Main Menu → Playback → Smart Search
Filter recordings by Human or Vehicle on any channel and date. The timeline highlights only matching events — makes it fast to find relevant footage during an investigation.
Demonstrate this to the customer at handover. It is often the most immediately impressive feature.
Getting the Best from AcuSense
Camera angle: Aim cameras at 15–30° below horizontal. A camera aimed too steeply sees a person as a small blob — harder to classify correctly.
Distance: AcuSense works best when the subject occupies a meaningful portion of the frame. A tiny figure at 40m is harder to classify than a clear figure at 8m. Choose camera position and focal length accordingly.
Lens: A 6mm or varifocal lens gives better subject size at distance. For scenes where detection accuracy at range matters, use a longer focal length.
Avoid large trigger zones covering mixed areas: A zone covering a driveway that includes a busy road beyond the gate will trigger on every passing vehicle. Draw zones carefully within the property boundary.
Testing Before Handover
- Walk through the detection zone or cross the Line Crossing — confirm a recording event is created
- Check Hik-Connect on your phone — confirm the push notification is received with a thumbnail
- Run or drive through a vehicle zone — confirm a vehicle event is created
- Confirm the customer's phone also receives notifications (test in their presence)
- Demonstrate AcuSense Smart Search — show how to find events by type
Common Mistakes
| Mistake | Consequence |
|---|---|
| Configuring smart events but not linking to recording | Events trigger but no footage is saved |
| Not enabling Hik-Connect notification | No push alerts reach the customer |
| Line Crossing across a road visible beyond the gate | Every passing vehicle triggers |
| Not enabling Target Filter | Smart event triggers on any motion — no benefit over standard detection |
| Intrusion zone too large | High trigger rate from animals or shadows at zone edges |