Presentation on theme: "Read Digital input Turn on sensor board Convert to Temperature & Humidity Wake Up CC430 Sleep CC430 Timing diagram ① P.2.4 <= 1s ① P. 233 <= 2s ① Temperature."— Presentation transcript:
Read Digital input Turn on sensor board Convert to Temperature & Humidity Wake Up CC430 Sleep CC430 Timing diagram ① P.2.4 <= 1s ① P. 233 <= 2s ① Temperature Output Temperature : Digital input -> Resistance of RTD calculated -> Converted to Temperature Humidity : Wake from Sleep in 15 minute interval Wireless transmission P2.4 : 0 ~ 3V P2.2 : 0 ~ 3V 3.3V output from GPIO MAVRK Mother Board GUI Software Progress Temperature Output
Temperature Calculation Math
Software Design Iterations Design Iteration 1:Use Ti’s board + Software Design Iteration 2:Modify code to interface correctly with new board. Also, send out correct enable signals to the correct pins. Design Iteration 3:Apply mathematical equations to correct data interpretation Design Iteration 4:Implement smart enabling to conserve power.
Smart Enabling Timing Diagram Sleep - 15 minutes Interrupt Temperature Sensing ************************** Enable p3.0 (3.3V rail on) 200 us wait 1 second Enable p3.5 (wheatstone switch on) 7.5ns wait 1 second Enable p3.7 (opa364 on) 20us wait 1 second Sample temperature data disable p3.7 (opa364 off) 1us wait 1 second Disable p3.5 (Wheatstone switch off) 12.5ns wait 1 second Disable p3.0 (3.3V rail off) 200us wait 1 second Humidity Sensing ************************** Enable p3.2 (5v rail on) 200us wait 1 second Enable p3.3 (opa 364 on) 20us Wait 1 minute for humidity sensor's response time Sample humidity data Disable p3.3 (opa 364 off) 1us wait 1 second Disable p3.2 (5v rail off) 200us wait 1 second Go back to sleep
Future Implementation Add more software features Database on PC for packet store. Additional GUI application for graph display of data Accept inputs from several uMavrks Implementation of averaging algorithm Indication of completion of curing.
What is the Mavrk? Modular and versatile reference kit. Used for rapid prototyping. Modules to encapsulate functionality. Less Component level interaction. More System level Design.
uMavrk uMavrk is an extension to the Mavrk for remote monitoring. Lower power (<10 ma) Enabled for RF connection back to the Mavrk
Example- Rapid prototyping of our own circuit Dc to Dc boost converter Temperature Circuit Amplification Circuit What if TI had modules for all three? Program firmware to handle interaction between all three.