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ETHERNET-BASED
COAXIAL SWITCHING SYSTEM
W.Amasiri , S.Lerdnantawat , D.Bunnjaweht
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
FACULTY OF ENGINEERING , THAMMSAT UNIVERSITY
PREVIOUS
CONVENTIONAL
COAXIAL SWITCH
ETHERNET BASED
COAXIAL SWTICHING SYSTEM
June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 2
PREVIOUS
OMRON G2RL-1-E PC APPLICATION MOBILE APPLICATIONCONTROLLER BOX
Single Pole General
Purpose Relay,
High Capacity,
Flux Protection
Arduino W/ Ethernet Shield
LCD 16x4
Relay Driver
Power Over Ethernet Cable
SO-239 UHF Connector
LABVIEW Application MIT Appinventor,
For Android Devices.
June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 3
PRESENT
SPECIFICATION USB DIGITAL TV TUNER
RTL-SDR
OPENSOURCE SDR DEVELOPMENT
EXPERIMENTAL IN
ATTENUATION LOSS
AND
RETURN LOSS
SDRLab
CONCLUSION
June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 4
SPECIFICATION
TECHNICAL INFORMATION
SPECFICATION DOCUMENTS
June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 5
SPECIFICATION
TECHNICAL STANDARD
June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 6
EXPERIMENTAL
ATTENUATION LOSS
1st 2nd
TRANSMITTER POWER METER DUMMY LOAD TRANSMITTER POWER METER DUMMY LOADSYSTEM
5 WATTS 5 WATTS
0 dBm
ATTENUATION LOSS
1st RESULT : 2nd RESULT :
28.500 , 145.000 , 436.500 MHz 28.500 , 145.000 , 436.500 MHz
June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 7
EXPERIMENTAL
RETURN LOSS
TRANSMITTER SWR METER DUMMY LOADSYSTEM
1.0 : 1
1st RESULT : 28.500 MHz
1.1 : 1
2st RESULT : 145.000 MHz
1.0 : 1
3rd RESULT : 436.500 MHz
June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 8
SDR
USB DIGITAL TV TUNER , RTL-SDR
RTL-SDR
OPENSOURCE SDR DEVELOPMENT
LOW-COST
SDR
USB 2.0 connector
Input: 75 Ohm IEC(Din)
Connector: Output A type USB male Connecter;
Receiving frequency: DVBT-48.25~863.25 MHz;
FM radio: 87.5~108 MHz,
DAB radio; L-band: 1452960~1490624 KHZ;
VHF-174928~239200 KHz;
Bandwidth: 6/7/8 MHz auto selection;
Power: USB, Power: <= 1.5W,
COMMAND LINE INTERFACE
RTL-SDR TCP
June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 9
SDRLab
LABVIEW + RTL-SDR TCP + AUTO SWITCH
June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 10
NEXTSTEPS
CONCLUSION AND SUGGESTION
June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 11
ANTENNA SELECTABLE
ACCEPTABLE LOSS
USER FRIENDLY INTERFACE
INTEGREATED WITH SDR
The implemented system is capable of selecting proper antenna as
designed. The attenuation loss and signal reflection are acceptable. This
system has a user-friendly interface via mobile phone and personal computer.
In addition to regular amateur radio, this work is tested with a software-
defined receiver and it can operate in the similar designed conditions.
CONCLUSION
SUGGESTION
CROSS-PLATFORM APPLICATION DEVELOPMENT
NETWORK INTEGRATED DEVELOPMENT KIT
(ESP8266 , NODEMCU , etc)
HIGH ACCURACY INSTRUMENTS / MEASUREMENT PROCESS
THANK YOU !
SHOWCASE
June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 13
INTEGREATED WITH SDR
ANTENNA
DUMMYLOAD

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An Ethernet-Based Coaxial Switching System , Final Presentation

  • 1. ETHERNET-BASED COAXIAL SWITCHING SYSTEM W.Amasiri , S.Lerdnantawat , D.Bunnjaweht DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING FACULTY OF ENGINEERING , THAMMSAT UNIVERSITY
  • 2. PREVIOUS CONVENTIONAL COAXIAL SWITCH ETHERNET BASED COAXIAL SWTICHING SYSTEM June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 2
  • 3. PREVIOUS OMRON G2RL-1-E PC APPLICATION MOBILE APPLICATIONCONTROLLER BOX Single Pole General Purpose Relay, High Capacity, Flux Protection Arduino W/ Ethernet Shield LCD 16x4 Relay Driver Power Over Ethernet Cable SO-239 UHF Connector LABVIEW Application MIT Appinventor, For Android Devices. June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 3
  • 4. PRESENT SPECIFICATION USB DIGITAL TV TUNER RTL-SDR OPENSOURCE SDR DEVELOPMENT EXPERIMENTAL IN ATTENUATION LOSS AND RETURN LOSS SDRLab CONCLUSION June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 4
  • 5. SPECIFICATION TECHNICAL INFORMATION SPECFICATION DOCUMENTS June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 5
  • 6. SPECIFICATION TECHNICAL STANDARD June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 6
  • 7. EXPERIMENTAL ATTENUATION LOSS 1st 2nd TRANSMITTER POWER METER DUMMY LOAD TRANSMITTER POWER METER DUMMY LOADSYSTEM 5 WATTS 5 WATTS 0 dBm ATTENUATION LOSS 1st RESULT : 2nd RESULT : 28.500 , 145.000 , 436.500 MHz 28.500 , 145.000 , 436.500 MHz June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 7
  • 8. EXPERIMENTAL RETURN LOSS TRANSMITTER SWR METER DUMMY LOADSYSTEM 1.0 : 1 1st RESULT : 28.500 MHz 1.1 : 1 2st RESULT : 145.000 MHz 1.0 : 1 3rd RESULT : 436.500 MHz June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 8
  • 9. SDR USB DIGITAL TV TUNER , RTL-SDR RTL-SDR OPENSOURCE SDR DEVELOPMENT LOW-COST SDR USB 2.0 connector Input: 75 Ohm IEC(Din) Connector: Output A type USB male Connecter; Receiving frequency: DVBT-48.25~863.25 MHz; FM radio: 87.5~108 MHz, DAB radio; L-band: 1452960~1490624 KHZ; VHF-174928~239200 KHz; Bandwidth: 6/7/8 MHz auto selection; Power: USB, Power: <= 1.5W, COMMAND LINE INTERFACE RTL-SDR TCP June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 9
  • 10. SDRLab LABVIEW + RTL-SDR TCP + AUTO SWITCH June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 10
  • 11. NEXTSTEPS CONCLUSION AND SUGGESTION June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 11 ANTENNA SELECTABLE ACCEPTABLE LOSS USER FRIENDLY INTERFACE INTEGREATED WITH SDR The implemented system is capable of selecting proper antenna as designed. The attenuation loss and signal reflection are acceptable. This system has a user-friendly interface via mobile phone and personal computer. In addition to regular amateur radio, this work is tested with a software- defined receiver and it can operate in the similar designed conditions. CONCLUSION SUGGESTION CROSS-PLATFORM APPLICATION DEVELOPMENT NETWORK INTEGRATED DEVELOPMENT KIT (ESP8266 , NODEMCU , etc) HIGH ACCURACY INSTRUMENTS / MEASUREMENT PROCESS
  • 13. SHOWCASE June 26, 2015 W.Amasiri , S.Lerdnantawat , D.Bunnjaweht 13 INTEGREATED WITH SDR ANTENNA DUMMYLOAD

Editor's Notes

  1. วัช :
  2. วัช :
  3. หมู : เป็นส่วนที่เกี่ยวข้องกับงานที่ต่อเนื่องมาจากส่วนที่แล้ว 1.Specification (Technical Information) = เกี่ยวกับคุณลักษณะของอุปกรณ์ 2.การทดสอบประสิทธิภาพ (Attenuation Loss & Return Loss) 3.การนำ USB Digital TV Tuner มาใช้ร่วมกับ SDR และ โครงงาน (USB Digital TV Tuner เป็น SDR อยู่แล้ว แต่เป็นในรูปแบบของ Digtal TV Tuner อย่างเดียว) 3.การนำ RTL-SDR (Opensource) มาทำให้ USB Digital TV Tuner สามารถใช้งานในรูปแบบอื่นได้ (SDR) 4.การนำ SDRLab ( WFM ) มาใช้ร่วมกับโครงงาน 5.สรุป
  4. หมู : สร้าง Technical Standard , Information เพื่อบอกคุณลักษณะ , สภาพแวดล้อม ของการนำอุปกรณ์ใช้งาน แรงดันไฟฟ้า น้ำหนัก ขนาด อุณหภูมิ ข้อกำหนดอื่นๆ โดยสร้างขึ้นมาจาก การพิจารณาข้อกำหนดของอุปกรณ์แต่ละชิ้น (LCD)
  5. หมู : ยกตัวอย่าง “อุณหภูมิ”
  6. วัช :
  7. วัช :
  8. หมู : ประกอบด้วย 2 ส่วน ส่วนของ USB Digital TV Tuner เป็น SDR ออกแบบเพื่อรับเฉพาะ DTV,Digital Radio,Conventional Radio ส่วนของ RTL-SDR เป็น Opensource เพื่อดึงความสามารถ SDR จาก RTL2832U(sampling) มาใช้ Interface เป็น Command Line สามารถทำงานบน TCP Protocol ได้ (LAN) เป็นส่วน Core ของ GNURadio (พัฒนาต่อเป็น SDR อื่นๆ)
  9. หมู : ทำการรวม Switching บน PC กับ SDRLab ที่เป็น SDR บน LABVIEW เพื่อให้สามารถสลับสายอากาศได้อัตโนมัติเมื่อรับฟังวิทยุ
  10. วัช :