Occupant Detection: New Python Solutions For Targeted Data #2

Product Development Engineering

Occupant Detection and Classification Using Python

for Occupant Safety

Introduction - Targeted Data in Occupant Detection (using Python)

Essentially, the goal of the Occupant Sensing System is to facilitate the Occupant Detection, i.e. determine the presence, location, and classification of the occupants within the vehicle. Generally, the proposed Usecase involves two occupants (driver and another passenger) entering the vehicle, with the system detecting their presence and locations. Furthermore, the system performs an initial classification within 20 seconds, followed by continuous monitoring of the occupants’ positions. Hence, in this article, we will explore a basic Python implementation for these Usecases, focusing on two people: the driver and one additional passenger.

System Functionality and Logic

Overall, the system operates in two phases:

  1. “Presence Detection and Initial Classification: Firstly, when an occupant enters the vehicle, the system will determine the presence of a living occupant within 20 seconds. Consequently, this is achieved by comparing the occupant’s size with predefined basic criteria (for example, the size of a 1-year-old child) and other relevant attributes (such as micro motion).”
  2. Location Determination: Secondly, after confirming the presence of the occupant, the system determines their location within the vehicle (e.g., driver’s seat or passenger’s seat). Sequentially, this step is initiated once the occupant has settled into their seat, which is detected through sensor feedback.

Python Code Example:

Below is a simplified Python implementation to simulate the occupant detection and classification system.

python

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import time

# Define the criteria for detecting an occupant’s size

def is_alive(size):

    # Assume the occupant is alive if their size is greater than 30cm and less than 80cm

    if 30 <= size <= 80:

        return True

    return False

# Function to detect and classify an occupant

def detect_occupant(size, seat):

    start_time = time.time()

    detected = False

    # Initial detection and classification (within 20 seconds)

    while time.time() – start_time < 20:

        if is_alive(size):

            detected = True

            print(f”Occupant detected in {seat}. Classification: Alive human.”)

            break

        else:

            print(“No occupant detected.”)

            time.sleep(1)

    # If the occupant is detected, return True and seat information

    if detected:

        print(f”Occupant in {seat} is classified successfully.”)

        return True

    else:

        print(f”Failed to detect occupant in {seat}.”)

        return False

# Function to determine the location of the occupant (driver or passenger)

def determine_location(seat):

    if seat == “Driver”:

        print(“Location Determination: Driver’s Seat”)

    elif seat == “Passenger”:

        print(“Location Determination: Passenger’s Seat”)

    else:

        print(“Unknown Seat”)

# Simulate the scenario with two occupants

def main():

    # Assume size of the occupants (in cm)

    driver_size = 70  # Average size of the driver

    passenger_size = 50  # Average size of a passenger

    # Detect and classify the driver

    print(“Detecting Driver…”)

    if detect_occupant(driver_size, “Driver”):

        determine_location(“Driver”)

    # Detect and classify the passenger

    print(“\nDetecting Passenger…”)

    if detect_occupant(passenger_size, “Passenger”):

        determine_location(“Passenger”)

# Run the simulation

main()

Sample Output:

Here is the output you would expect from running the Python code:

python

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Detecting Driver…

Occupant detected in Driver. Classification: Alive human.

Occupant in Driver is classified successfully.

Location Determination: Driver’s Seat

 

Detecting Passenger…

Occupant detected in Passenger. Classification: Alive human.

Occupant in Passenger is classified successfully.

Location Determination: Passenger’s Seat

Explanation of Code:

  • The is_alive() function checks if the occupant’s size fits within a range that signifies they are an “alive human.”
  • The detect_occupant() function continuously checks for an occupant’s presence and classifies them as a human if they meet the size criterion, within 20 seconds.
  • Once the occupant is classified, their location within the vehicle is determined using the determine_location() function.
  • The code simulates the detection of both a driver and a passenger and outputs the results of their classification and location determination.

Conclusion - Targeted Data in Occupant Detection (using Python)

In conclusion, this Python code demonstrates a simple, foundational approach to occupant detection and classification within a vehicle. Furthermore, using basic criteria for size and time-sensitive detection, we are able to classify two occupants (driver and passenger) and determine their respective locations. Moreover, as vehicle safety systems evolve, more complex logic will be added, including dynamic behavior tracking and the use of advanced sensor technologies.

Therefore, with further refinements, such as integrating sensor data for real-time location determination and using machine learning for improved classification, this system could be developed into a robust occupant sensing solution, enhancing safety and functionality in modern vehicles.

References:

About George D. Allen Consulting:

George D. Allen Consulting is a pioneering force in driving engineering excellence and innovation within the automotive industry. Led by George D. Allen, a seasoned engineering specialist with an illustrious background in occupant safety and systems development, the company is committed to revolutionizing engineering practices for businesses on the cusp of automotive technology. With a proven track record, tailored solutions, and an unwavering commitment to staying ahead of industry trends, George D. Allen Consulting partners with organizations to create a safer, smarter, and more innovative future. For more information, visit www.GeorgeDAllen.com.

Contact:
Website: www.GeorgeDAllen.com
Email: inquiry@GeorgeDAllen.com
Phone: 248-509-4188

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