Laser sensing and vision sensing smart canes can improve the convenience of travel for the visually impaired, but for the present, most of the system functions of laser sensing and vision sensing smart canes are still defective. Guide equipment and smart blind canes are introduced and classified first, and the smart blind canes based on vision sensing, laser sensing and laser vision sensing are investigated, respectively, and the research status of laser vision sensing smart blind canes is sorted out. The advantages and disadvantages of various laser vision sensing smart blind canes are summarized, especially the research development of laser vision fusion as the core of new smart canes. The future development prospects of laser vision sensing smart blind cane are overviewed, to boost the development of laser vision sensing smart blind cane, to provide safe and efficient travel guarantee for the visually impaired.

This paper proposes a high-sensitivity U-shaped optical fiber sensor based on indium tin oxide (ITO) for surface plasmon resonance (SPR) sensing. Finite element simulations reveal that introducing ITO enhances the surface electric field strength by 1.15× compared to conventional designs, directly boosting sensitivity. The U-shaped structure optimizes evanescent wave–metal film interaction, further improving performance. In an external refractive index (RI) range of 1.334–1.374 RIU, the sensor achieves a sensitivity of 4333 nm/RIU (1.85× higher than traditional fiber sensors) and a figure of merit (FOM) of 21.7 RIU⁻¹ (1.68× improvement). Repeatability tests show a low relative standard deviation (RSD) of 0.4236% for RI measurements, with a maximum error of 0.00018 RIU, confirming excellent stability. The ITO coating’s strong adhesion ensures long-term reliability. With its simple structure, ease of fabrication, and superior sensitivity/FOM, this SPR sensor is well-suited for high-precision biochemical detection in intelligent sensing systems.

To meet the requirements of low-frequency vibration monitoring in complex and variable application scenarios, a novel cantilever beam FBG accelerometer based on MRE is proposed. The structural principle of the sensor was analyzed theoretically, and a finite element model was established to further examine its structural characteristics. Calculations yielded an intrinsic frequency of 7.94 Hz. A prototype was fabricated for experimental validation. Results indicate that without applied current, the sensor exhibits an 8 Hz natural frequency with excellent response capability to low-frequency acceleration excitation signals, achieving a sensitivity of 113.09 pm g ⁻¹ . When applying currents ranging from 0.1 A to 0.9 A, the frequency response remained stable within 1–3 Hz, achieving tunable sensitivity between 105.56 pm g ⁻¹ and 271.69 pm g ⁻¹ . The transverse sensitivity was only 5.83% of the working direction sensitivity, demonstrating strong transverse noise immunity.