Electrical engineering have fun with building your own devices and travelling the world Iwate Prefectural Mizusawa High School Sebastian DIEBOLD
What will happen today? I will speak in English I will have English slides I will try to show what I like about engineering You will have the chance to ask many questions (please do!) You will have the chance to see an experiment 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 2
SOUNDS OK? (OR EVEN GOOD?) great, let s go! 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 3
Who am I? Born in Karlsruhe, Germany Went there to Kindergarten and school I was a member of the local firefighters Kindergarten ようちえん 28 November 2014 Iwate Prefectural Firefighter Mizusawa High しょうぼうし School - Sebastian DIEBOLD 4
Who am I? Studied electrical engineering and did Dr.-Ing. at Karlsruhe University JSPS Fellowship for Foreign researchers at Osaka University Hobbies: Running, travelling, 28 November 2014 Iwate Prefectural Researcher Mizusawa けんきゅういん High School - Sebastian DIEBOLD 5
Karlsruhe University More than 20 000 students study at 11 faculties mathematics, physics, architecture, business engineering, 13 institutes at faculty for electro-technical engineering and information technology photonics, communication theory, automation, 28 November 2014 Iwate Prefectural Mizusawa Faculty High がくぶ School - Sebastian DIEBOLD 6
Birth of Electrical Engineering at Karlsruhe University 1887 Heinrich Hertz proves the existence of the electromagnetic wave 1888 Otto Lehmann discovers the liquid crystal 1897 Ferdinand Braun develops the cathode ray tube Heinrich Hertz Otto Lehmann Ferdinand Braun electromagnetic wave でんぱ liquid crystal えきしょう cathode ray tube ブラウンかん 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 7
Birth of Electrical Engineering at Karlsruhe University 1887 Heinrich Hertz proves the existence of the electromagnetic wave 1888 Otto Lehmann discovers the liquid crystal 1897 Ferdinand Braun develops the cathode ray tube Heinrich Hertz Otto Lehmann Ferdinand Braun electromagnetic wave でんぱ liquid crystal えきしょう cathode ray tube ブラウンかん 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 8
My home city: Karlsruhe founded in 1715 Population: 296 000 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 9
My home country: Germany Size: 357 021 km 2 (Japan: 377 944) Population: 80.6 mio (Japan: 126.7 mio) 7.7 % foreign citizens (Japan: 1.5 %) Member of the European Union 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 10
My home area: Europe Size: 10 180 000 km 2 (Japan: 377 944) Population: 742 mio (Japan: 126.7 mio) Covers more than 50 countries 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 11
How my career began As child, I got a electronics experimental kit It contained many electronic components resistors, capacitors, transistors, 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 12
Electronics experimental kit With the kit, I could built my own radio, metal detector, starting with simple circuits 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 13
Fun circuits: LED flashing lights LED はっこうダイオード Capacitor コンデンサ Transistor トランジスタ Resistor ていこうき 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 14
ALL ABOUT ENGINEERING or at least: something about electrical engineering 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 15
Why do engineering? Because you can travel a lot and see the world Because you can work with many different companies Because there are many different things that you can do 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 16
Work on amazing applications Medicine Wireless communication Aircraft and satellite Optical Fiber Safety and security Earth and space observation Aircraft こうくうき Satellite じんこうえいせい Optical Fiber ひかりファイバー 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 17
Work with different partners European Space Agency (ESA) Many different universities University of Stuttgart, Germany University of Helsinki, Finland Many research institutes Fraunhofer IAF, Germany Millilab, Finland Many companies Siemens, Telekom, 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 18
Travel Europe yellow: business Dublin Ireland Amsterdam Netherland Helsinki Finland Karlsruhe Germany 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 19
Travel the world San Diego USA Karlsruhe Germany Osaka Japan South Korea Taiwan yellow: business 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 20
Conferences how does this work? Conferences are held in many field of research Physics, Mathematics, History, Conferences are held around the world You can meet interesting people Conferences allow you to share and broaden your knowledge 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 21
Example: APMC 2014 in Sendai 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 22
everything is in English?! 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 23
ELECTRONIC CIRCUITS AND SYSTEMS My research focus 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 24
My research focus millimeter wave frequencies Focus on Radar and communication systems System components mixer, amplifier, 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 25
How fast are millimeterwaves? Blink of an eye 100 msec = 0.1 sec Photo flash 1 msec = 0.001 sec Period of a 300 GHz signal 3 psec = 0.000000003 sec 28 November 2014 Iwate Prefectural Mizusawa Wave High なみ School - Sebastian DIEBOLD 26
What are EM waves? EM wave = electomagnetic wave = 電 磁 波 (でんじは) 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 27
Frequency of waves 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 28
Radar Radar is an object-detection system Uses electromagnetic waves Can determine the range, altitude, direction, or speed of target Radar: RAdio Detection And Ranging 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 29
Doppler Effect Change in frequency of a wave for an observer moving relative to its source relationship between f r and f t observed frequency f r emitted frequency f t Hmm where are they going? f r = f t 1+v/c 0 1 v/c 0 Oh no! they will get me! Doppler Effect ドップラーこうか 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 30
Doppler Radar Send signal f t and aim it on object moving with v detected signal with frequency f r The Doppler frequency f d is c 0 is speed of light f D 2 v f t c 0 DC f t v f d f r Doppler Radar ドップラー レーダー 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 31
Doppler radar hands-on We can hear our movements! speaker 2 nd amplifier Voltage source 24.125 GHz radar 1 st amplifier 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 32
sound intensity level Hearing range The human range is approximately 20 Hz to 20 khz Pain level music speaking Hearing threshold Frequency (khz) 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 33
Which movements can we hear? Doppler equation Target speed v f Dc 0 2 f t Speed of movement 0.5 km/h 11 km/h 450 km/h Frequency of sound 20 Hz 500 Hz 20 khz 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 34
LET S DO THE EXPERIMENT! 24.125 GHz Doppler radar 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 35
Summary of experiment We can hear our movements The faster, the higher the tone If we move parallel to the radar, we don t hear anything We can detect our movement even through paper and clothes 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 36
No contact required Doppler radar application: Detection of vital signs Detection through clothes, paper, wood,... Detection through sand, snow, rain,... application after earthquake to detect persons 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 37
96 GHz system description System set-up similar to 24 GHz system Higher frequency for higher resolution f D 2 v f t c 0 24 GHz 96 GHz Resolution かいぞうど 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 38
A close look at the components Due to high frequency, all components are very small Transmission of signals with optimized waveguides 2 cm Waveguide どうはかん 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 39
an even closer look Monolithic integrated amplifier chip measures 2.5 x 1.25 mm 2 transistor 20 µm integrated circuit しゅうせきかいろ Monolithic モノリシック 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 40
Measurement set-up A student did most signal processing and experiments radar 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 41
Δx (mm) Δx (mm) Δx (mm) Example Measurement Detected signal in 0.5 m distance time (sec) time (sec) heart-beat while holding breath t heart = 1.1 sec f heart = 0.9 Hz time (sec) respiration with heartbeat t respration = 4 sec f respiration = 0.25 Hz Respiration こきゅう 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 42
Summary Introduction of myself Why learn English? Why do Engineering? Doppler Radar 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 43
50 µm WE DID IT! Thank you very much for your attention 28 November 2014 Iwate Prefectural Mizusawa High School - Sebastian DIEBOLD 44