What Is the Google Coral TPU and How Does It Power AI Security?

When we talk about AI security systems that process video locally — without sending footage to the cloud — the hardware that makes this possible is often a specialised processor called a TPU. The Google Coral TPU has become one of the most widely used edge AI chips in the security industry. But what is it, and why does it matter for South African homeowners?

What Is a TPU?

TPU stands for Tensor Processing Unit. It is a type of processor specifically designed to run machine learning (AI) models efficiently. While a standard CPU (the processor in your computer) can run AI models, it does so slowly and with high power consumption. A TPU is purpose-built for the mathematical operations that AI models require, running them many times faster while using a fraction of the power.

Google originally developed TPUs for its own data centres to power services like Google Search, Google Photos, and Google Translate. The Coral TPU is a version of this technology designed for "edge" devices — small, low-power processors that can be embedded in cameras, NVRs, and other local hardware rather than running in a data centre.

Why It Matters for AI Security

Video analysis is computationally intensive. Analysing 8 camera feeds simultaneously at 15 frames per second — recognising faces, reading number plates, and detecting human movement in each frame — requires enormous processing power if done on a standard CPU.

The Google Coral TPU can perform this analysis in real time at a fraction of the energy cost of a CPU, and it fits inside a compact NVR device that sits in your home. This is what makes truly local AI security practical.

Local Processing vs Cloud Processing

Without dedicated AI hardware like the Coral TPU, running AI on a local device is too slow to be useful for real-time security. This is why many AI security products send video to cloud servers for analysis — the cloud has the processing power.

But cloud processing creates problems:

• Internet dependency: Cloud AI stops working when your internet goes down. In South Africa, this happens regularly during load shedding and ISP outages.
• Latency: Video must travel to a remote server and back. This adds seconds to alert response time — critical in a fast-moving security incident.
• Privacy: Your facial recognition data, licence plates, and home camera footage travel to someone else's servers.
• Cost: Cloud AI requires ongoing subscription fees. Local processing has no recurring cost.

A device with a Coral TPU eliminates all of these concerns. The AI runs inside your NVR, on your property, with your data never leaving your network.

What the Coral TPU Can Do in a Security Context

• Analyse 6 to 16 camera feeds simultaneously in real time
• Run facial recognition models — comparing live faces against a known database in milliseconds
• Perform ANPR (Automatic Number Plate Recognition) — reading South African plates accurately
• Detect and classify objects: person, vehicle, animal, package
• Identify behavioural anomalies: loitering, crowd formation, perimeter breach

All of this happens continuously, in real time, using about 2 watts of power — less than an LED light bulb.

The AI Vision Pro NVR and the Coral TPU

The AI Vision Pro NVR that we install integrates Google Coral TPU acceleration to deliver enterprise-grade AI analysis in a residential or SME package. This is why the system continues to function at full intelligence capability during load shedding — as long as the NVR has UPS power, the AI works independently of internet connectivity.

Summary

The Google Coral TPU is what makes truly local, private, and resilient AI security possible. For South African homeowners and businesses, it represents the difference between an AI security system that works 24/7 regardless of infrastructure conditions, and one that fails the moment Eskom or your ISP lets you down.

Experience the Coral TPU difference. Our AI Vision Pro NVR systems are powered by Google Coral TPU for fast, private, load-shedding proof AI security. Contact us to learn more.