Q: TDR hais tias qhov txhaum yog ntawm 450 meters. Kuv puas tuaj yeem pib khawb qhov ntawd?
A: TSIS MUAJ. Maps yog qub thiab kab nab. Koj xav tau "Acoustic-Magnetic Synchronization" pinpointing.
Txoj kev "Underground Thunder":
• Magnetic Signal: Taug kev ntawm lub teeb nrawm. Qhia tus txais: "Pulse raug rho tawm haujlwm!"
• Acoustic Signal (Lub Bang): Mus ncig ntawm lub suab nrawm hauv av.
• Logic: Lub receiver ntsuas lub sij hawm ncua ntawm ob. Thaum qhov ncua sij hawm yog ZERO, koj ncaj qha hla qhov txhaum.
Pro Lub Tswv Yim: Yog tias koj hnov "Thud" hauv lub mloog pob ntseg zoo li lub nruas muffled, koj tau pom qhov chaw. DIG NO.
Q: Daim ntawv qhia hais tias lub cable ua raws txoj kev, tab sis TDR tsis phim. Yuav ua li cas thiaj nrhiav tau txoj hauv kev tiag?
A: Tsis txhob tso siab rau daim ntawv qhia qub. Siv txoj kev Induction los taug qab cov electromagnetic teb.
Txheej txheem:
1. Inject Signal: Lub transmitter txhaj ib lub suab -frequency signal ntawm core thiab av.
2. Kab laum: Taug kev nrog lub receiver wand, ntes cov radiated teb.
3. Null vs Peak: Peak (wand ntsug)=nrov tshaj cable. Null (wand kab rov tav)=silent over center.
Yog vim li cas: Yog tias koj khawb thiab ntaus 110 kV kab es tsis txhob tuag 10 kV kab, nws yog qhov yuam kev tuag. Kos thiab pleev xim ua ntej.