Speed Detector – What You Need to Know

Vehicle speed detection relates to the estimation of the velocity of moving vehicles between two points on a city road. It relies on image and video processing techniques. With the use of cameras and dedicated software, there is video capturing of moving vehicles and analysis of speed on the base of the clicked images/videos between two points. 

The use of masking and frame subtraction techniques facilitates the segmenting of moving vehicles. There is the evaluation of the time taken between frames and detected corners for speed calculation. And the speed detector uses frame masking to distinguish between vehicles. With minor errors, speed detection is achieved. 

How does a speed detector work?

The sensors used in speed detection are installed at a distance of 1 metre. When a vehicle passes through these sensors, the system logs respective times – T1 and T2. And the calculation of speed is done on the basis of this formula:

Speed = distance/time   

Here, the distance between two sensors is 1 mitre. And the taken time is (T2-T1) if T2 is greater than T1 or T1-T2 if T1 is greater than T2. Hence, the speed calculation of an object happens irrespective of the direction. 

After the calculation, the attached serial monitor or OLED display shows the speed. 

Name the sensor used for detecting speed

A VSS (vehicle speed sensor) or WSS (wheel speed sensor) is usually used to read the speed of the rotation of a vehicle’s wheels. The wheel usually contains a pickup and a toothed ring. 

How many types of speed sensors are available there?

There are three types of speed sensors – magnetic sensors, sensing surfaces, and eddy current proximity sensors. 

Suggest to Read:- Fire and Smoke Detection System

Features of a speed detection system

Using a speed detection system is beneficial. It is more fruitful to concerned authorities when they are aware of its all features. Here are some unique features of a speed detector: 

  • It is based on artificial intelligence (AI) and machine learning (ML)
  • The installed cameras use to click images or videos of moving vehicles and calculate speed by analysing the time between two reference points 
  • Alert generation of stolen, suspicious, or hot-listed vehicles 
  • Read speed up to 120 kilometres per hour 
  • Configuration of the speed limit as per users’ needs 
  • Review evidence and violation data 
  • Alerts for red light violations in real time 
  • Category management 
  • Admin and user management function 
  • Generation of customised reports on speed violation 
  • Advanced search options 

Why use a speed detector?  

Speed violation is one of the primary reasons for road accidents and insecurity. Detecting and limiting speed can help lower the number of accidents on city roads and streets. Using a speed detector is beneficial. Here are some significant benefits of using a speed detection system:

  • Helps in making decisions about the speed limit 
  • Saves money that could be spent on repairing the damage to vehicles and roads caused by an accident 
  • Saves lives by avoiding or minimising road accidents 
  • Helps avoid hassle on city/town roads and highways 
  • Makes travel comfortable and convenient
  • Improves safety and security