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Edge Video AnalyticsReference design

Edge ANPR & License Plate Recognition

A gate system that reads number plates from existing CCTV cameras on one local host, logs every vehicle and can open the barrier for listed vehicles. Plates and snapshots stay on site. It fits housing societies, campuses and staff car parks that have a fixed lane where the plate is clearly visible.

Parking and smart cityHomes and buildings

Talk to an engineer See the hardware

Car approaching a toll plaza lane between stop signs and striped barriers on an Indian highway — Photo: In Transit, CC BY-SA 4.0, Wikimedia Commons. Shows the setting, not this installation.

30 fps: Plate reading at 1080p on J3011, using looped CCPD public dataset images
5.6 ms: Median time per frame on J3011 with TensorRT FP16 (same test stream)
23.1 ms: Median time per frame on RK3576 with INT8 on the NPU (same test stream)
5 of 8: Correct reads on RK3588 in a small still-image check, 3 withheld and none wrong

Results reported by the design's authors on their own test setups. Yours depend on the site, so we confirm them in a pilot.

The problem

Why it matters.

Gates need to recognise approved vehicles and lift the barrier automatically using cameras already installed, while keeping plate data on site.

The flow

From signal to action.

01SenseGate cameraAn existing ONVIF or RTSP camera streams 1080p H.264 video of the lane to the host.
02DecidePlate readingThe reComputer finds and reads the plate and produces one record per vehicle.
03ConnectMQTT recordsPlate records and gate actions are published on MQTT, with snapshots served over HTTP.
04DecideWhitelist checkThe barrier controller compares the plate with a local whitelist, which can carry expiry dates.
05ActBarrier relayFor a listed plate, the controller closes a dry contact through a relay to lift the barrier.
06RecordSnapshot storeSnapshots stay on the host for 7 days by default for review.

Deployment architecture

How it is wired.

The devices on site, what carries their data, where the decision is made and where the result goes.

01SenseOn site

IP camera (1080p, RTSP)

02ConnectCarries the data

RTSP
ONVIF

03DecideRuns the model

reComputer J3011 (Jetson Orin Nano 8GB)1 per site
reComputer RK3576-301 per site
reComputer RK3588-301 per site
reComputer R1124-10
reComputer R1100
TensorRT

04Your systemsWhere results land

MQTT
HTTP API
CSV whitelist
Parking management software

05ActWhat happens next

Interposing relay
Barrier relay

How it works

Step by step.

01Aim the camera at the lane from 3 to 8 m away at an angle under 30 degrees.
02Upload the whitelist as a CSV file through the host's API, with expiry dates for staff if needed.
03The host reads each passing plate and publishes one record with the plate, confidence and a snapshot link.
04Listed vehicles get a pulse to open the barrier, and others are handled at the guard booth.
05Use the preview page and the test-open call to check reads on your own day and night footage before going live.

The hardware

What goes on site.

Items we stock can go straight in the bag. Everything else we source and quote with the installation.

reComputer J3011 (Jetson Orin Nano 8GB)Standard plate recognition host1 per siteSourced on quote
reComputer RK3576-30Lower-cost recognition host using the NPU1 per siteSourced on quote
reComputer RK3588-30Host with headroom for more streams or models1 per siteSourced on quote
reComputer R1124-10Barrier controller with relay output, whitelist and MQTT broker1 per site, barrier setups onlySourced on quote
reComputer R1100Optional digital outputs for relay-driven gatesSourced on quote
IP camera (1080p, RTSP)Existing gate camera supplying the videoSourced on quote
Interposing relayConnects the controller output to the barrierSourced on quote

Before you install

A 1080p or better IP camera with an RTSP stream.
Camera placed 3 to 8 m from a fixed lane, at under 30 degrees, with the plate clearly legible.
A local network linking camera, host and controller, with ports 1883, 8080, 8081 and 8099 reachable.
A barrier that can be triggered through a dry contact via an interposing relay.
Sample daytime and night footage from your own gate for checking reads.

Good to know

Only mainland China blue and green plates are supported. Two-row, special and overseas plates are not, so Indian plates would need a different model.
All speed figures come from public plate images looped through a stream, not from a real gate.
Plate numbers and snapshots are personal data, so set a retention period and access rules.
The page names both the R1100 and the R1124-10 for barrier output, so confirm the controller before ordering.

How we deliver it

Paper to site, one team.

01Site surveyWe walk the site, or review photos and drawings, and agree what to measure and where each device goes.
02PilotOne lane, one line or one room first. We tune it on your conditions and agree what good looks like.
03Roll outWe supply the hardware in India with GST invoices, install it, and connect it to the systems you already run.
04SupportSpares, remote checks and model updates, with one team to call when something changes.

Questions

Asked before buying.

Will it read Indian number plates?

Not as published. It supports only Chinese blue and green plates and says overseas plates are not supported.

Can we keep our existing CCTV cameras?

Yes, if they give a 1080p RTSP stream and are placed 3 to 8 m from the lane at a shallow angle.

How are visitors handled?

Only listed residents or staff open the barrier automatically. Visitors still go through the guard, and staff entries can expire on a set date.

Want this on your site?

Tell us the site and the problem. We come back with a pilot plan and a priced hardware list.

Book a call with an engineer Write to us

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Want this on your site?

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