Functional Requirements

Hardware

• FR1 - The system must measure the patient’s body temperature.
• FR2 - The system must measure the patient’s heart rate.
• FR3 - The system must measure the patient’s oxygen saturation.
• FR4 - The system must measure the patient’s blood pressure.
• FR5 - The system must have audio output.
• FR6 - The system must have audio input.
• FR7 - The system must control if the doors should open or close.
• FR8 - The system must have a screen.
• FR9 - The system must have WiFi connection.
• FR10 - The system must indicate visually when the patient should speak.
• FR11 - The system must be plugged into the outlet.

Mechanical

• FR12 - The system must have space to contain an oximeter and cardiac frequency sensor.
• FR13 - The system must have space to contain blood pressure equipment.
• FR14 - The system must have space to contain a temperature sensor.
• FR15 - The system must have space to contain a microphone.
• FR16 - The system must have space to contain a sound box.
• FR17 - The system must have at least 2 spaces to contain a speaker.
• FR18 (Non obligatory) - The system must have space to contain a camera.
• FR19 - The space that contains the blood pressure equipment should have a little door.
• FR20 - The space that contains the oximeter and cardiac frequency sensor should have a little door.
• FR21 - Both doors must lock when closed.
• FR22 - The system must have a space for a screen.
• FR23 - The drawer opening will be controlled by a servo motor. FR24 - The door opening will be controlled by a servo motor.

Software

• FR25 - The system must contain a website where healthcare professionals can access patients’ information.
• FR26 - The website must have a login page.
• FR27 - The website must allow users to authenticate to get access.
• FR28 - The website must allow users to search for patient’s medical screenings.
• FR29 - The website must allow users to see all collected data in a patient’s medical screening.
• FR30 - The website must allow users to see a patient’s medical screening history.
• FR31 - The website must allow users to export a patient’s medical record as a PDF.
• FR32 - The website must manage sessions and keep users logged in.
• FR33 - The website must have admin users who can manage less privileged users.
• FR34 - The website must allow new authorized users to register.

General

• FR35 - The system must identify patients via name and CPF.
• FR36 - The system must communicate via audio with the patient.
• FR37 - The system must be voice-controlled.
• FR38 - The system must show the questions in text form on the screen.
• FR39 - The system must start the medical screening after a specific voice command.
• FR40 - The communication between the system and the patient should be in English.
• FR41 - The system must ask pre-defined questions at the beginning of the medical screening.
• FR42 - The system must elaborate questions intelligently based on the patient’s complaints.
• FR43 - The system must give the patient instructions about how to get vital signs monitored.
• FR44 - The system must show heart rate being measured in real time.
• FR45 - The system must show oxygen levels being measured in real time.
• FR46 - The system must show temperature being measured in real time.
• FR47 - The system must end the medical screening by timeout or user’s command.
• FR48 - The system must keep a history of a patient’s medical screenings.
• FR49 (Non obligatory) - The system must detect the presence of a patient via camera.
• FR50 (Non obligatory) - The system must perform person recognition via camera.

Non Functional Requirements

• NFR1 - All hinges and locks must be made from non-brittle materials to avoid cracking under stress.

• NFR2 - All compartments must be accessible for maintenance without requiring specialized tools.

• NFR3 - The total system dimensions must not exceed 60 × 80 × 20 cm (to ensure portability).

• NFR4 - The total weight of the system must not exceed 12 kg.

• NFR5 – Access to sensors must allow easy patient placement without excessive effort.

• NFR6 – The system must include handles or grips to facilitate safe carrying

• NFR7 –Doors and panels must have stops or soft-close mechanisms to prevent sudden slamming.

• NFR8 – Internal components must be clearly identifiable to facilitate replacement or maintenance.

• NFR9 – The system must handle authentication using JWTs (JSON Web Tokens.)

• NFR10 – The web application must be in English.

• NFR11 – The web application must be written in PHP using the Laravel framework.

• NFR12 – The server backend must be written in Python 3.

• NFR13 – The Raspberry Pi application must be written in Python 3.

• NFR13 – The temperature must be measured in Celsius.

• NFR14 - The system must measure temperature using an infrared sensor (MLX90614).

• NFR15 - The system must measure blood pressure using a HEM-7142 monitor.

• NFR16 - The system must measure heart rate and blood oxygen level using a MAX30100 sensor.

• NFR17 - The speaker must output at least 5 Watts.

• NFR18 - The microphone must capture audio from a minimum distance of 40 cm.

• NFR19 - The user shall remain at a minimum distance of 10–20 cm from the temperature sensor when measuring the temperature.

• NFR20 - The system must use PostgreSQL as the database.

• NFR21 - The website pages must have at least 4.5:1 contrast ratio for normal text.

• NFR22 - The website pages must have at least 3:1 contrast ratio for large text.

• NFR23 - The website must have its text with minimum 16px.

Budget

Schedule

Time Management Spreadsheet

Risk Management Analysis

Risk Analysis Spreadsheet