ultrasonic-table
H Zkitchen table with ultrasonic sensors
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System Requirements
Ultrasonic-Table System Requirements Document
1. Introduction
The Ultrasonic-Table project aims to develop a smart table equipped with ultrasonic sensors to prevent users from accidentally hitting their knees. The table will emit a beep, similar to a car parking sensor, when it detects an obstacle nearby.
2. System Overview
The Ultrasonic-Table is designed to enhance user safety and comfort by integrating ultrasonic sensors that detect proximity to obstacles. When a user approaches the table, the sensors will trigger an audible alert to prevent knee collisions.
3. Functional Requirements as Story Points
- As a User, I should be able to approach the table without hitting my knees, thanks to the ultrasonic sensors.
- As a User, I should hear a beep when I am nearing the table to alert me of the proximity.
- As a User, I should be able to adjust the sensitivity of the ultrasonic sensors to suit my preferences.
- As a User, I should be able to turn off the beeping sound if desired.
4. User Personas
- Home User: A person using the table in a domestic setting, concerned with safety and comfort.
- Office Worker: An individual using the table in a professional environment, requiring a distraction-free workspace.
5. Core User Flows
- User approaches the table -> Ultrasonic sensors detect proximity -> Beep is emitted -> User adjusts their position to avoid collision.
- User configures sensor sensitivity -> Saves settings -> Sensors operate according to new sensitivity levels.
- User decides to disable the beep -> Accesses settings -> Turns off the beep -> Table operates silently.
6. Visuals Colors and Theme
[Default — not specified by user]
- primary: #4A90E2 (a calming blue)
- primary_light: #B3D4FC (a lighter tint of the primary color)
- secondary: #50E3C2 (a complementary green)
- accent: #F5A623 (a vibrant orange for alerts)
- highlight: #F8E71C (a bright yellow for notifications)
- bg: #FFFFFF (white for a clean background)
- surface: #F2F2F2 (light grey for surfaces)
- text: #333333 (dark grey for primary text)
- text_muted: #9B9B9B (muted grey for secondary text)
- border: #E6E6E6 (subtle grey for borders)
7. Signature Design Concept
Interactive Beeping Table
The Ultrasonic-Table will feature an interactive design where the table surface visually responds to proximity. As a user approaches, a series of concentric circles will animate outward from the point of detection, simulating ripples on water. This animation will be accompanied by a gentle beeping sound that increases in frequency as the user gets closer, mimicking a car parking sensor. The animation will be built using motion/react to ensure smooth transitions and responsiveness.
Landing Hero Motion Brief
The landing page will feature a dynamic illustration of the table in a home setting. As users scroll, they will see a person approaching the table, triggering the ultrasonic sensors. The animation will show concentric circles emanating from the table's edge, with the beeping sound increasing in frequency. This loop will last 10 seconds and reset seamlessly. The animation will be responsive, adjusting to different screen sizes while maintaining clarity and impact.
8. Interaction Model & Motion Direction
- Intended Interaction Model: Animated
- The landing page will feature scroll-triggered reveals and hover transitions, with spring physics on interactive elements to enhance user engagement.
- Internal Pages: Static
- Minimal motion will be used for settings and configuration pages to prioritize clarity and usability.
9. Non-Functional Requirements
- The system must operate reliably in various lighting conditions.
- The beeping sound should be audible but not disruptive, maintaining a balance between alerting and comfort.
- The table should be energy-efficient, with sensors consuming minimal power.
10. Tech Stack
[Default — not specified by user]
- Frontend: React for Web
- Backend: Python, FastAPI
- Database: MySQL or MariaDB, using Alembic for migrations
- Local Orchestration: Docker, docker-compose
11. Assumptions and Constraints
- The table will be used primarily in indoor environments.
- Users will have access to a mobile device or computer to configure settings.
- The system should be compatible with standard home and office furniture dimensions.
12. Glossary
- Ultrasonic Sensors: Devices that use sound waves to detect objects and measure distance.
- Beep: An audible alert emitted by the table to indicate proximity to an obstacle.
- Sensitivity: The degree to which the sensors detect proximity, adjustable by the user.
Protect Your Knees with Smart Proximity Alerts
Ultrasonic-Table senses when you're getting close and emits a gentle, car-parking-style beep before you hit your knees — so you can adjust the sensitivity, or turn the sound off entirely, right from Settings.
Beeps that escalate the closer you get
Ultrasonic-Table drives its parking-sensor-style alert entirely from a shared timeline — no pre-recorded clips. Oscillator tones are synthesized live and speed up as proximity increases, so you always know how close is too close.
- Initial Alert · 400Hz at 50% proximity
- Approaching · 600Hz at 70% proximity
- Critical Proximity · 800Hz at 90% proximity
Sensitivity and mute preferences configured here mirror the settings on your physical table — adjust anytime from the Settings page.
Go to Sensor Settings →No more knee bumps, just a gentle heads-up
Ultrasonic Table watches the space around your knees and beeps like a parking sensor before you make contact, so every approach stays safe and comfortable.
Safety First
Ultrasonic sensors built into the table edge detect your knees before contact, keeping every approach collision-free.
Automatic Alerts
A gentle beep sounds automatically as you get close, just like a car parking sensor, so you never have to think twice.
Adjustable Sensitivity
Tune sensor sensitivity to match your space and preference, or turn the beep off entirely from Settings.
From footstep to beep, in an instant
Four simple moments make up every knee-safe encounter with your Ultrasonic Table.
You Approach the Table
Walking up to the table, your legs move into range of the built-in ultrasonic sensors mounted along the edge.
Sensors Detect Proximity
The ultrasonic sensors measure the distance in real time, watching for anything getting close to the table edge.
Beep Is Emitted
Just like a car parking sensor, a gentle beep sounds and increases in frequency the closer you get.
You Adjust Position
Cued by the beep, you shift your position slightly and avoid hitting your knees on the table edge.
Five Ways Ultrasonic Table Keeps You Safe
Just like a car parking sensor, every feature works together so you never feel the edge before you hear the beep.
Ultrasonic Sensor Technology
Precision ultrasonic sensors continuously scan the space around the table edge, detecting an approaching knee before contact ever happens.
Adjustable Sensitivity Levels
Fine-tune how close is too close. Dial detection range up or down to match your room, your habits, and your comfort.
Customizable Beep Control
Choose the beep volume and tone, or silence it entirely for a distraction-free workspace when you need quiet focus.
Energy Efficient Design
Low-power sensors sip minimal energy while staying alert around the clock, keeping the table efficient without compromise.
Responsive to Various Lighting Conditions
Sound-based detection works identically in bright daylight, dim evenings, or complete darkness, so protection never fades.
Ready to enhance your table safety?
Ultrasonic-table beeps like a parking sensor the moment your knees get close, so bumps and bruises stay a thing of the past.
Protect Your Knees with Smart Proximity Alerts
Ultrasonic-Table senses when you're getting close and emits a gentle, car-parking-style beep before you hit your knees — so you can adjust the sensitivity, or turn the sound off entirely, right from Settings.
Beeps that escalate the closer you get
Ultrasonic-Table drives its parking-sensor-style alert entirely from a shared timeline — no pre-recorded clips. Oscillator tones are synthesized live and speed up as proximity increases, so you always know how close is too close.
- Initial Alert · 400Hz at 50% proximity
- Approaching · 600Hz at 70% proximity
- Critical Proximity · 800Hz at 90% proximity
Sensitivity and mute preferences configured here mirror the settings on your physical table — adjust anytime from the Settings page.
Go to Sensor Settings →No more knee bumps, just a gentle heads-up
Ultrasonic Table watches the space around your knees and beeps like a parking sensor before you make contact, so every approach stays safe and comfortable.
Safety First
Ultrasonic sensors built into the table edge detect your knees before contact, keeping every approach collision-free.
Automatic Alerts
A gentle beep sounds automatically as you get close, just like a car parking sensor, so you never have to think twice.
Adjustable Sensitivity
Tune sensor sensitivity to match your space and preference, or turn the beep off entirely from Settings.
From footstep to beep, in an instant
Four simple moments make up every knee-safe encounter with your Ultrasonic Table.
You Approach the Table
Walking up to the table, your legs move into range of the built-in ultrasonic sensors mounted along the edge.
Sensors Detect Proximity
The ultrasonic sensors measure the distance in real time, watching for anything getting close to the table edge.
Beep Is Emitted
Just like a car parking sensor, a gentle beep sounds and increases in frequency the closer you get.
You Adjust Position
Cued by the beep, you shift your position slightly and avoid hitting your knees on the table edge.
Five Ways Ultrasonic Table Keeps You Safe
Just like a car parking sensor, every feature works together so you never feel the edge before you hear the beep.
Ultrasonic Sensor Technology
Precision ultrasonic sensors continuously scan the space around the table edge, detecting an approaching knee before contact ever happens.
Adjustable Sensitivity Levels
Fine-tune how close is too close. Dial detection range up or down to match your room, your habits, and your comfort.
Customizable Beep Control
Choose the beep volume and tone, or silence it entirely for a distraction-free workspace when you need quiet focus.
Energy Efficient Design
Low-power sensors sip minimal energy while staying alert around the clock, keeping the table efficient without compromise.
Responsive to Various Lighting Conditions
Sound-based detection works identically in bright daylight, dim evenings, or complete darkness, so protection never fades.
Ready to enhance your table safety?
Ultrasonic-table beeps like a parking sensor the moment your knees get close, so bumps and bruises stay a thing of the past.
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