Dual-Modality ECT/ERT Imaging System
TJUDMT: Dual-modality Electrical Capacitance Tomography (ECT) / Electrical Resistance Tomography (ERT) imaging system (TJUDMT): ERT + ECT dual modality on one acquisition platform, measuring the same spool plane simultaneously, with dual-modal imaging at 15-500 fps and phase-fraction and flow-regime outputs for gas-liquid-solid and oil-water multiphase flow monitoring.
The TJUDMT (Dual-Modality Tomography) series — designed and developed by the Tianjin University Electrical Imaging research group — integrates Electrical Resistance Tomography (ERT, contact conductivity measurement) and Electrical Capacitance Tomography (ECT, non-contact permittivity measurement) on a single acquisition platform: both modalities measure the same spool plane simultaneously under one factory clock with per-frame timestamps. Three tiers are available — Standard, Professional and Flagship (1-3 ERT planes plus 1-2 ECT planes, with simultaneous dual-modal imaging at 15-500 fps). The complementary modalities cover both conductive and non-conductive media, suited to gas-liquid-solid and oil-water flows whose electrical properties change with operating conditions; phased calibration and flow-regime identification are supported.
Acquisition host: on-board FPGA and gigabit Ethernet for single-platform dual-modality acquisition.
ECT mode: column-type non-contact capacitance sensor with the acquisition host.
Overview
Two modalities, one platform, one measurement plane
When water is the continuous conductive phase, ERT leads with conductivity mapping; as water content drops and water appears as droplets or films, ECT takes over with permittivity imaging — water's permittivity (≈80) contrasts sharply with gas (≈1) and ceramics (≈9–12), so the two modalities complement each other across operating conditions. Simultaneous dual-modal imaging is available at 15-500 fps depending on tier, with hardware clock synchronisation and per-frame timestamps aligned within half a frame period; data exports as image sequences and CSV, with open SDK on the Flagship tier for dual-modality fusion and post-processing in MATLAB or Python.
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Simultaneous same-plane acquisition
ERT and ECT share one acquisition platform and one factory clock, with per-frame timestamps aligned within half a frame period — dual-modal data directly comparable.
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Complementary across operating conditions
ERT maps conductivity in conductive continuous phases; ECT takes over in low-water-cut conditions — covering media ranges a single modality cannot.
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Multi-plane 3D imaging
Up to 3 ERT planes plus 2 ECT planes acquired synchronously on the Flagship tier to reconstruct the 3D distribution of the measured object.
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Open data · full calibration
Image-sequence and CSV export, with open SDK on the Flagship tier; phased calibration across water+gas, water+solid and three-phase conditions.
TJUDMT product line overview — Standard / Professional / Flagship
| Item | Standard | Professional | Flagship |
|---|---|---|---|
| Price | Welcome to contact us for a formal quotation; universities and research institutes may apply for additional discounts | ||
| Modalities | Dual-modality ERT + ECT, one acquisition platform, simultaneous measurement on the same spool plane | ||
| ERT planes | 1 plane | 2 planes | 3 planes |
| ECT planes | 1 plane | 1 plane | 2 planes |
| ERT electrodes | 16 electrodes per plane (12/16 configurable), flush-mounted with wear-resistant finish | ||
| ECT plates | 12 plates per plane (8/12 plates configurable), mounted on the inner or outer insulating wall for non-contact measurement | ||
| Simultaneous dual-modal frame rate | 15 fps | 50/100 fps | 200/500 fps (1) |
| Frame synchronisation | Hardware clock synchronisation with per-frame timestamps (accuracy ≤ 1 ms); alignment error within half a frame period | ||
| Image reconstruction algorithms | • Single-step algorithms • Optional algorithm packages | • Single-step algorithms • Iterative algorithms • Optional algorithm packages | • Single-step algorithms • Iterative algorithms • Neural-network algorithms |
| Software licensing | • Perpetual single-machine • Add-on modules | • Perpetual single-machine • Add-on modules | • Perpetual single-machine • All modules included |
| Output parameters | • Cross-sectional images • Solids volume fraction • Gas volume fraction • Flow-regime identification (bubbly / slug / annular) | • Cross-sectional images • Solids volume fraction • Gas volume fraction • Flow-regime identification (bubbly / slug / annular) | • Cross-sectional images • Solids volume fraction • Gas volume fraction • Flow-regime identification (bubbly / slug / annular) • Open SDK |
| Communication interface | Gigabit Ethernet | ||
| Phased calibration | Water+gas, water+solid and three-phase conditions (2) (3-5 levels each) | ||
| Measurement spool | Flanged replaceable spool; bore, material and electrode layout customisable | ||
| Power supply | AC220V ±10% / 50Hz | ||
| Power consumption | ≤ 45 W | ||
| Operating environment | 0-45 ℃, relative humidity ≤ 85% RH | ||
| Warranty & service | 1-year warranty with free calibration | ||
| Customer feedback program | Application testimonial | Co-authored publications | Referral rewards | Repeat-purchase benefits | Research project collaboration | ||
Notes: (1) Imaging frame rate: the frame rate with both modalities acquiring and reconstructing online; the Professional tier offers 50 / 100 fps and the Flagship tier 200 / 500 fps. (2) Phased calibration: referenced to the full-pipe and empty-pipe states; calibration curves are built for water+gas, water+solid and three-phase conditions (3-5 levels each).
Gallery
Companion Software
Imaging / reconstruction software that pairs with this instrument
