Millimeter wave radar wireless alarm system-(4 channels)

Project description:
I helped a classmate to do a project. The classmate was playing with his mobile phone in the dormitory at night and did not know when the dormitory manager would come to check the room. In order to solve this problem, I made a prompt system and designed this. The sensor was installed in the corridor, facing the corridor passage.
If someone passes in front of the sensor, the millimeter wave radar signal is sent through the microcontroller code 433. There are a total of 4 channels transmitted to the receiver, which can be installed at 4 different locations in a corridor or monitor 4 corridor channels at the same time.
It can also be used to detect whether there are people in the environment, and can also be used as a doorbell.
 
Open source protocol
GPL3.0
 
project related functions
Millimeter wave radar detects corridor channels and transmits alarm signals back to the receiver. The receiver prompts via audible and visual alarms. (Sound and light alarm optional) Bluetooth backlink to mobile phone alarm (under development)
Project Properties
This project is disclosed for the first time and is my original project. The project has not won any awards in other competitions.
 
Project Progress
Circuit Design Completed
Program Design Completed
PC Development In Progress
Design Principle
Millimeter wave radar detects whether there is someone in the channel. If so, the millimeter wave radar sends a signal through the single chip encoding 433 module. It is transmitted to the receiver, and
the receiver 433 hardware decodes it and sends it to the microcontroller. The microcontroller processes the sound and light display of the alarm information and sends data packets to the host computer device through Bluetooth.
Software description
 
Physical display
 
 
 
 
 
design precautions
: Here are some precautions that need to be paid attention to in the production of the work (you can omit it if you don’t have it)
Material link
433 antenna https://uland.taobao.com/sem/tbsearch?refpid=mm_26632360_8858797_29866178&keyword=% E7%94%B5%E5%99%A8&clk1=d2f1d8a30e4b29d3451b7ccf9334805e&upsId=d2f1d8a30e4 b29d3451b7ccf9334805eMillimeter
wave radar
https://item.taobao.com/item.htm?spm=a1z10.1-cs. w4001-24807913378.1.15ed1b07WEV23Q&id=693636466061&scene=taobao_shop
433M Transmitting and receiving module
https://item.taobao.com/item.htm?spm=a21n57.1.0.0.1432523c9tacKQ&id=609396372939&ns=1&abbucket=0#detail
 
Other
millimeter wave radars have been measured to penetrate gypsum board walls and are effective after penetration The detection distance is 2 meters, and the effective detection distance in the open field is 5 meters. In the test video, millimeter wave radar sensor modules are installed in classrooms on both sides of the corridor.