JOINT PROJECT

Integrated Project
EEB2053 Instrumentation & Measurement
+
EEB2083 Microprocessor & Computer Architecture

Our Engineers

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Amir Khusairi
Bin Darasid
20000718

Kuik Pei Yin
20000653

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Maisarah Rafiq Binti Faisal Rafiq
20000779

Background

Theme: Smart Car

The selected theme is Smart Car and a major concern for the manufacturers is the ensuring of the driver and the passenger’s safety on the road where they are exposed to various danger on the road. According to Edward Smith, studies have shown that drivers of Smart Cars are about 12 times more likely to get killed in a car accident. Since the size of Smart Car is half of the regular size, he also stated that the possibility of suffering serious injuries in a Smart Car accident is even higher. Dangers caused to the Smart Car can be due to many factors including the condition of the road, carelessness of the driver, and the condition of the vehicles.

Prototype

Reference Model:
Perodua Myvi Third Generation

Dimensions:

- Length: 3,895mm

- Width: 1,735mm

- Height: 1,515mm

Prototype Model:

Lego Mindstorm NXT

Dimensions:

- Length: 254mm

- Width: 152mm

- Height: 270mm

By dimensions, the prototype was downscaled with a ratio of approximately 0.001 or 1/10000 from the reference model.

Problem Statement & Measured Variable

In this project, we will focus primarily on the issue of faulty braking systems because it is a common occurrence in vehicles that can potentially cause fatalities if not resolved. This is because braking systems play a role in restraining the movements of vehicles. Hence, it plays a big role in automotive safety.

Measuring Points Downscale

We took a reference for the total stopping distance set by America’s National Association of City Transportation Officials (NACTO). When approaching a stop, vehicles decelerate to a speed of less than 20km/h or 12.4 MPH before halting completely. To fulfill these guidelines, the NACTO total stopping distance selected is 27ft at a speed of 10MPH. This translates to 8.2m at a speed of 16.1km/h by unit of distances used in Malaysia.

Table 1 Braking Distances set by the American National Association of City Transportation Officials (NACTO)

For the prototype testing, the total stopping distance used was 30cm from sensor. This gives a downscale ratio between the reference and prototype total stopping distance of 0.036 or approximately 1/28.

The stopping distance is selected as the reference variable because the aim of the prototype is to replicate the movement of a vehicle that approaches an object and is required to slow down and brake.

Sensor Selection

The sensors compared are HC-SR04 ultrasonic sensor, JSN-SR04Y-2.0 ultrasonic sensor, HC-SR505 infrared sensor, and TF-Luna ToF LIDAR. Various information on sensors are obtained from official datasheet from the manufacturers