Post on 17-Jan-2016
Imagine
SENIOR PROJECTWireless Weather Monitor
Final Presentation
• Project Team
– Dale McClure
– Dave McHugh
– Joe Russo
Project Results
• Project Schedule– On Time– On Budget– Minimal Setbacks– Team Motto
SCHEDULE
RF Components
• Laipac Tech Inc. - Holtec Semiconductor Agent
• Series LP 434@433.92MHz Components
Project Components
• Transmitter Section– Temperature Sensor – National Semi LM34– Humidity Sensor – Honeywell 3610– Motorola 68HC11 Microcontroller– Power Supply – 9V Alkaline cell– Voltage Regulation – MC7805 for 5 Volt Operation– Laipac Tx #TLP – 434 @ 433.92 MHz
Tx Section with Sensor Array
Temp Sensor
Humidity Sensor
Op-Amps
9V battery
Motorola CME11E9-EVBU
RF Transmitter
Tx Section with Case Enclosure
RS-232 Port
On-Off Switch
LED Power On Indicator
50 Ohm Collapsible
Antenna
Ventilation Holes for air Transfer
Humidity Sensor
• Honeywell 3610 Humidity sensor
• Linear output voltage vs % RH
• Given a 5v supply Voltage output is 0.8 – 3.9 volts
• Motorola MC3303 single supply op-amps
Temperature Sensor
• National Semiconductors LM34 Temperature sensor
• Linear +10.0 mV/°F scale factor
• Rated for full -50° to +300°F range
• Motorola MC3303 single supply op-amps
• Receiver Section– Laipac Rx #RLP – 434@433.92 MHz– Motorola 68HC11 Microcontroller– OPTREX LCD Screen– ACT 5x5 keypad – Power Supply – 9V Alkaline cell– Voltage Regulation – MC7805
for 5 Volt Operation
Project Components
Rx Section On-Off Switch
LED Power On Indicator
LCD display for Sensor Outputs
Keypad for choosing Sensor information and Future Options
Shock Resistant Enclosure
Rx SectionRS-232 Port
Keypad Driver
AC/DC Variable
Power Supply
Motorola CME11E9-EVBU
RF Receiver
U1
NET_2068HC11
U2
NET_2068HC11
LCD port
pin 1 pin 2pin 3 pin 4pin 5 pin 6pin 7 pin 8pin 9 pin 10
pin 11 pin 12pin 13 pin 14
U3
NET_14LCD
pin 1 pin 2pin 3 pin 4pin 5 pin 6pin 7 pin 8pin 9 pin 10pin 11 pin 12pin 13 pin 14
(Vss) (Vcc)(Vee) (RS)(R/W) (E)
(DB1)(DB0)(DB2) (DB3)(DB4) (DB5)
(DB6) (DB7)
68HC11 recevier
Bus PortU4
NET_208279
5V
VCC
DB0
DB1DB2DB3DB4DB5DB6DB7
(pin12)
(pin13)(pin14)(pin15)(pin16)(pin17)(pin18)(pin19)
DB0DB1DB2DB3DB4DB5DB6DB7
(pin7)
(pin5)(pin3)(pin2)(pin4)(pin6)(pin8)(pin10)
(pin1)GND (pin37)CNTL/STB(pin36)SHIFT
(pin33)+5V(pin15)/OE(pin25)/WR(pin26)/CS0(pin9)A0(pin40)/RESET(pin37)ECLK
To
8279
chip
U5A
7404N(pin9)RESET(pin10)/RD(pin11)/WR
(pin21)A0(pin22)/CS0(pin3)ECLK
From68HC11micro-controller
(pin40)Vcc
To keypad,inverter, andreciever
Receiver (continued)
U1
NET_8Keypad
From 8279IC chip
(pin38)RL0 pin1
(pin39)RL1(pin1)RL2(pin2)RL3
pin2pin3pin4
(pin32)SL0
(pin33)SL1(pin34)SL2(pin35)SL3
pin5pin6pin7pin8
U2A
7414N
U3
NET_8Receiver
U4
.1uF
From 68HC11microcontroller
(pin1)GND pin1PD0/RxD pin2
pin4(pin1)GND
Antenna
pin8pin7pin6pin5
(pin33)+5V
U5A
7414N
•Software Bugs Addressed
– Serial Connection for Tx and Rx
– Sensor Code Conversion
– Sensor Calibrations
– LCD Display
– Modulation Type
The Wireless Weather Monitor is Assembled in State of the Art Facilities by Highly Trained Personnel