16. Applications and implications¶
This week I worked on define the scope of my project, and develop a project plan including a bill of materials(BOM).
Overview¶
Propose a final project masterpiece that integrates the range of units covered, answering:
- What will it do?
- Who’s done what beforehand?
- What will you design?
- What materials and components will be used?
- Where will come from?
- How much will they cost?
- What parts and systems will be made?
- What processes will be used?
- What questions need to be answered?
- How will it be evaluated?
What it will do?
- This is an indoor human presence and fall detection device. It is used as a home human body protection function and provides real-time light alarm. In order to protect the privacy of family members, the corresponding monitoring data can be reported to the APP for warning.
1. People Fall Detector¶
Thirdly，for another function, I hope that during the day, when the entire device is turned on, the movement status of indoor people can be detected through the mmwave sensor in the middle, as an anti-fall monitoring function.
2. Remote Alarm Message¶
Finally, the device can send the monitoring results to the cloud or mobile phone to remind people to monitor whether the elderly at home have fallen.
Who’s done what beforehand?
- Software library for mmWave sensors from Seeed Studioand LED lights from Adafruit, etc.
What will you design?
- Circuit schematics and printed circuit boards design and manufacturing，
- Mechanical transmission parts with self designed gears to open or close then show sensor detection
- Appearance components with laser cutting and 3D printing
What materials and components were used?
- Check the following material list
Materials List¶
| Qty | Description | Price | Link | Notes |
|---|---|---|---|---|
| 1 | Seeed Studio XIAO ESP32 | 4.99 $ | Seeed Studio XIAO ESP32 | |
| 1 | Seeed MR60FDA1 60GHz mmWave Sensor | 37.00 $ | Seeed MR60FDA1 60GHz mmWave Sensor | |
| 1 | DRV8833 Motor Driver Module | 2.00 $ | DRV8833 Motor Driver Module | |
| 1 | N20* 65r/min DC Motor | 5.00 $ | N20 DC Motor | |
| 1 | 24-WS2812 LED Ring | 6.00 $ | 24-WS2812 LED Ring | |
| 1 | 2*3 Pin SMD Socket | 0.30 $ | 2*3 Pin SMD Socket | |
| 1 | 2*4 Pin SMD Socket | 0.30 $ | 2*4 Pin SMD Socket | |
| 10 | M3*8mm Stud | 2.00 $ | M3*8mm Stud | |
| 14 | M3*22mm screws + M3 Nut | 5.00 $ | M3*22mm screws + M3 Nut | |
| 1 | 3mm Acrylic Boards | 6.00 $ | 3mm Acrylic Boards | |
| 1 | Jumping Cables | 0.30 $ | Jumping Cables | |
| Total Cost | 69.19 $ |
Where did they come from?
- Online Taobao purchasing
- Chaihuo Makerspace supplying
How much did they cost?
- Total around $69.19 USD for materials.
What parts and systems will be made?
- Electronics parts for system <br
- Mechanical tranmission parts for rotaration parts
- Apperance parts for whole devices.
What processes were used?
- Electronics & Hardware Design: ESP32C3, DVR8833, mmWave Sensor
- Software Development & Integration: Arduino IDE, Mobile phone for MOTT server and data reciever
- 2D & 3D Design: Onshape and Solidworks,
- CNC milling: PCB manufacturing in chahuo makerspace
- Laser Cutting for mechanical transmission parts: Chaihuo makerspace
- 3D Printing for apperance parts.: Chaihuo makerspace
-
What questions need to be answered?
- I need to make a different design for indoor people fal detection and make remote alarm solution so that people can trac the data history via mobilephone.
How will it be evaluated?
- The human mmwave sensor can detect the following states:
- When the sensor is working normally and no one is detected, the sensor will report a relatively low data value, and the LED light ring will light up green to indicate the working status.
- When the sensor starts to detect that someone is passing or staying, the sensor will report the data value and give a text reminder in the data column of MQTT, and the LED light ring will light up yellow to indicate that a person is detected.
- When the sensor surface has detected that someone has appeared or stayed, if this process lasts for more than 20 seconds, the sensor will remind that someone has fallen, and will issue a remote alarm message, and the LED light ring will light up red to indicate the status of fall detection.
- When the human mmwave sensor does not detect any object for a long time, it can turn off the opening and closing mechanism of the sensor by rotating the motor and enter sleep mode. Of course, people can also remotely control the switch through the mobile phone.
- The LED light ring will display the working status of the sensor and the detected information. It should display different colors of yellow/red/green to respectively show the three states of someone being present, someone falling, or no one in front of the sensor.
- It should send alarm data to the mobile phone and leave sensor records to check the status.
- It should remotely control the opening or closing of the rotating part.
Scope of the project
Timeline and Milestones¶
| Phase | Week | Dates | Tasks | Milestones |
|---|---|---|---|---|
| Planning and Ideas | Week 1 | May 6 - May 12 | - Define project objectives - Gather all necessary components - Install and configure the Arduino IDE - Research and choose the appropriate materials |
May 10: Complete initial preparation |
| Mechanical Design | Week 2 | May 12 - May 19 | - Prototype the 2D/3D design - Debug and optimize the 2D & 3D design - Assemble the mechanical parts |
May 17: Finalize the mechanical parts |
| Electronic Design | Week 3 | May 19 - May 26 | - Develop schematic design & PCB design - Manufacture the PCB boards - Test and debug the PCB boards |
May 23: Solve the PCB problems |
| Software Design | Week 4 | May 26 - June 2 | - Develop the sensor - Debug and refine code for MQTT publish - Optimize performance and power consumption |
June 1: Fully tested and debugged system |
| Finalization | Week 5 | June 2 - June 6 | - Finalize the function (software & hardware) - Organize the materials (videos & photos) - Prepare for final presentation and documents |
June 6: Project finalized and ready for presentation |
After the final project presentation, I will need to use two weeks to make the weekly assignment which i didnt finished before.