tokaido lug 2019-03-09

tokaido lug 2019-03-09

1. RASPI
   CO2  
   20193   IN  
2. 
   
3. 
   •
    • EJUG, mikutter, Tokaido LUG
4.  …   … )'!*%(3&$ … .3*%+2
   &  #,3&-1… /0 … " … 
   2…
5. 
   
   
   
     
   
   
   
   
6. 
   CO2 
7. 
    • RasPi 3B(+) • MH-Z19 • Winsen  •  CO2   
   • 0 ~ 2,000 ppm, 0 ~ 5,000 ppm • (50ppm + 3% reading value) • PWM, UART • https://www.winsen-sensor.com/d/files/infrared-gas-sensor/mh-z19b-co2-ver1_0.pdf
8. 
    •  400 ppm • https://ds.data.jma.go.jp/ghg/kanshi/ghgp/co2_trend.html • ppm
    • Parts Per Million  •  • 1ppm = 0.0001% • 400 ppm = 400 x 0.0001 % = 0.04%
9. 
     • 1,000 ppm (0.1%)  • https://www.mhlw.go.jp/bunya/kenkou/seikatsu-eisei10/ • !"  1,000 ppm  $ 
    % "  #
10. MY NEW GEAR…
11. 
     • 5V, GND, Tx, Rx
    
12. 
     •   • Python  
      • https://github.com/UedaTakeyuki/mh-z19 •  null   • Pre-Heat 3min
13. 
     • 
     • 400 ppm   !" • 20 $ 400ppm   #  
14. 
     •
    : 740 •
    : 580
15. 
     • *+ &'  • &'2: 398 ~ 500, 972: 650 ~ 1450 • -, )  • &'2: 550 ~ 600, 972: 700 ~ 900 • !# 1534.(56 • .
    8$ • 0"
    /% 8$
16. GOLANG
     • Python &!%/- Golang .29 • Serial 7;*5  # #$1F https://github.com/tarm/serial • Serial A3"&:
    ,)46 API endpoint @  • &>A3'+E29 • API endpoint  Golang + PostgreSQL + gorm + docker • POST  B0(=8C?  DB D< 
17. 
     •   • Web UI  • ' " #! • Slack  • CO2  % 
    • TVOC &$
18.