Multifunctional frequency modulated continuous wave LiDAR for simultaneous 3D imaging and multi-parameter sensing

a, The fundamental configuration of the LiDAR monitoring system. b, The frequency relationship of the LO beam and probe beams mirrored from completely different units, which is able to generate beat alerts of various frequencies and carry the reflection spectra informatio

The purple line and orange line represents sensing module and LiDAR module respectively. The inexperienced peaks are generated by FBG, FP, MPC, mirror, collimator and goal, and brown peaks are generated by fiber connectors.

a, The precise scene. b, The 3D level cloud picture.

GA, UNITED STATES, August 11, 2026 /EINPresswire.com/ — A multifunctional frequency modulated steady wave (FMCW) LiDAR able to high-precision ranging and multi-parameter sensing is proposed for the primary time. By detecting the echo alerts from each free house and optical fiber, 3D imaging and the measurements of various bodily parameters, together with environmental temperature, fuel concentrations and liquid density could be measured concurrently. The proposed multifunctional LiDAR reveals vital software potential in fields equivalent to new vitality automobiles and spacecraft.

With the fast growth of recent vitality automobiles and automated driving applied sciences, the necessities for car notion techniques have gotten more and more stringent. Though conventional FMCW LiDAR affords high-precision 3D imaging capabilities, its performance is restricted and can’t detect inside battery states or environmental parameters. In the meantime, thermal runaway in batteries poses a big security danger for electrical automobiles, with early warning counting on the coordinated monitoring of a number of parameters equivalent to temperature, electrolyte density, and attribute gases. At the moment, these features are usually achieved by separate imaging and sensing techniques, resulting in excessive system complexity, elevated prices, and vital integration challenges. Due to this fact, growing a multifunctional LiDAR system that mixes high-precision imaging with multi-parameter environmental sensing has grow to be an pressing must advance the security of automated driving.

In a brand new paper printed in Gentle: Superior Manufacturing, a group of scientists, led by Professor Yongkang Dong from Nationwide Key Laboratory of Laser Spatial Info, Harbin Institute of Know-how, China, Zhengzhou Analysis Institute, Harbin Institute of Know-how, China, and colleagues have developed a multifunctional FMCW LiDAR able to high-precision ranging and multi-parameter sensing for the primary time. By detecting the echo alerts from each free house and optical fiber, 3D imaging and the measurements of various bodily parameters, together with environmental temperature, fuel concentrations and liquid density could be measured concurrently. Within the experiment, a goal at 30 m was imaged with an adjustable decision spanning 0.3 cm to 1.2 cm. In the meantime, the electrolyte density and temperature of a battery had been measured with accuracies of three×10⁻⁵ g/mL and 0.5 °C, respectively. The concentrations of gases (C2H2, CO2 and CH4), that are crucial for monitoring thermal runaway of a battery, had been measured with detection limits of 0.07 ppm, 48 ppm, and 0.56 ppm, respectively. The proposed multifunctional LiDAR reveals vital software potential in fields equivalent to new vitality automobiles and spacecraft.

By shifting the FMCW LiDAR know-how from free house into the optical fibers, an optical frequency area reflectometry (OFDR) is realized, which can be utilized in sensing. Much like FMCW, the OFDR additionally makes use of a linearly modulated steady mild supply for optical fiber measurement, and their positioning precept is similar. It has distinctive benefits of excessive spatial decision and huge dynamic vary, and has been enabled within the sensing of varied measurands together with pressure, temperature, strain, and fuel focus. These scientists summarize the operational precept of their digicam:

“A multifunctional FMCW LiDAR system is proposed for the primary time, which has capability of 3D imaging of objects in free house and sensing of multi-parameter concurrently. In concept-proof experiments, the imaging of a plastic plate with a “HIT” image positioned 30-m away is realized. Sulfuric acid resolution is used as candidates for monitoring numerous facets equivalent to temperature, electrolyte density. And three blended gases (C2H2, CO2 and CH4) are crammed in a multi-pass cell (MPC) for the monitoring of fuel leakage.”

“Within the LiDAR module, the gap of the goal could be calculated from the optical path distinction between the collimator reflection peak and the goal reflection peak. The reflection spectra in wavelength area of the FBG, FP and MPC could be demodulated respectively from their reflection peaks in spatial area by IFT.

“The offered method can concurrently understand the important thing features of automated driving system and battery administration of the brand new vitality car with just one demodulator. It holds widespread software potential within the area of recent vitality automobiles, which is anticipated to supply a brand new built-in resolution to enhance the security of recent vitality automobiles. ” the scientists forecast.

References
DOI
10.37188/lam.2026.102

Unique Supply URL
https://doi.org/10.37188/lam.2026.102

Funding data
This work was supported by the Nationwide Key Analysis and Growth Program of China (No. 2023YFF0715804, No. 2022YFB3207602), the Nationwide Pure Science Basis of China (No. 624B2053, No. 62205297), the Postdoctoral Scientific Analysis Growth Fund of Heilongjiang Province (No. LBH-Q21092), and the Nationwide Key Laboratory of Laser Spatial Info Basis (No. LSI2024WDZC003).

Lucy Wang
BioDesign Analysis
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