8 results about "Triboluminescence" patented technology

The invention belongs to the technical field of material physics, and particularly relates to a triboelectroluminescence composite material, a preparation method thereof and a triboelectroluminescence tactile device. The triboelectric electroluminescent composite material is formed by compounding a polymer matrix, a triboelectric reinforcing filler and fluorescent powder, the frictional electricity reinforcing filler is polytetrafluoroethylene; the fluorescent powder is ZnS: Cu; and the polymer matrix is polyvinylidene fluoride-hexafluoropropylene. The triboelectroluminescent composite material is used as a luminescent layer and a triboelectrification layer, and the triboelectroluminescent tactile device constructed by the triboelectroluminescent composite material and a friction material shows an ultra-low pressure detection limit of 0.42 Pa; and along with the increase of the pressure intensity, the output optical signal and electric signal are stronger. The strongest luminous intensity of the triboluminescence tactile device is 1.25 times of the indoor light intensity, and the triboluminescence tactile device can obviously emit light in outdoor sunlight.

The invention provides a photon skin based on friction-induced electroluminescence and a construction method thereof, and relates to the technical field of flexible electronics and intelligent sensing. The photon skin comprises a stretchable light-emitting device and a stretchable electrode, the content of the flexible matrix is 50% of the total mass of the composite photon film, and the mass ratio of the electroluminescent particles to the piezoelectric material is 6: 4; wherein the flexible matrix is a PDMS solution, the ratio of PDMS to the curing agent is 10: 1, the electroluminescent particles are ZnS: Cu, and the piezoelectric material is PVDF. The stretchable photo-electric double-response photon skin is formed by a composite photon film and a stretchable Ag / TPU electrode which is printed on the surface of the composite photon film in a silk-screen mode. The maximum tensile strength is more than two times, and high flexibility and environmental adaptability are achieved. And related applications such as gesture recognition and handwriting authentication systems can be realized. According to the invention, the problem of collaborative optimization of stretchability and optical-electrical performance is solved, and a new material and a technical path are provided for self-energized flexible sensing.

The application provides a spinning frame single spindle detection system and a detection method, and belongs to the technical field of spinning. The spinning frame single spindle detection system comprises a front row of spindle positions and a rear row of spindle positions arranged in parallel. The spindle positions comprise a drafting system and a twisting system. The twisting system is arranged at the front of the drafting system. The twisting system comprises a twisting device and a forming device. A coating of frictional luminous material is arranged on the track of the steel ring. A light receiving device surrounding the steel ring is arranged on the steel ring plate. The movement state of the steel ring is monitored in real time by whether the light receiving device receives a light signal. The real-time monitoring of the spun yarn end breakage is realized. The monitoring method relying on the light source generated by the external active light emitting device is changed. The durability and reliability of the device are effectively improved.

This invention relates to the field of intelligent bearing monitoring technology, and discloses a method, device, equipment, and storage medium for detecting bearing wear status. The method provided by this invention separates and extracts long-term trend components and short-term fluctuation components over a time scale, quantifying the remaining lubricant thickness and interface stress fluctuations respectively, thus decoupling wear accumulation from transient friction behavior. Further statistical analysis of short-term variance and pulse count rate reflects the uniformity of stress distribution and the frequency of direct metal-to-metal contact. Normalized variance is used to eliminate the influence of operating conditions such as load and speed on luminescence intensity, avoiding misjudgments caused by changes in operating conditions. Finally, by combining the above parameters and using a wear stage discrimination model, the wear stage discrimination result of the target bearing at the current moment can be accurately identified. This not only achieves non-invasive online monitoring of bearing wear status in sealed, confined spaces, but also accurately identifies the bearing wear status using changes in light intensity in the original triboluminescence signal of the target bearing.

The invention relates to a force-induced fluorescent polymer film and a preparation and use condition determination method thereof, and the method comprises the following steps: preparing mixed solutions with different luminous molecule contents by taking tetranitro-tetraphenylethylene as a solute and a polyurethane solution as a solvent; pouring the mixed solution into a round glass mold, and drying in a drying oven to prepare a polymer film; shooting microscopic images of the films with different luminous molecule contents by using an optical microscope; carrying out a friction experiment by adopting a pin disc type rotary friction device; exciting a friction area of the thin film by using an ultraviolet light source, and capturing a fluorescence image through a CCD camera; and positioning a light-emitting area based on image cutting and boundary extraction algorithms, calculating an average gray value to quantify the light-emitting intensity, and drawing a light-emitting intensity change curve. The polymer film provided by the invention has the characteristic of continuous luminescence, and has more excellent mechanical stimulation luminescence response performance; when the applied acting force is 3N, the frictional contact reaches the best, and the frictional luminous intensity reaches the maximum value at the moment, so that tiny contact force can be detected.

The application belongs to the technical field of friction, and particularly relates to application of a friction luminescent coating in online speed detection. The application provides application of a friction luminescent coating in online speed detection, wherein the friction luminescent coating comprises resin and mixed fluorescent powder; the mixed fluorescent powder comprises ZnS:Mn 2+ fluorescent powder and ZnS:Cu fluorescent powder. The application combines ZnS:Mn 2+ fluorescent powder and ZnS:Cu fluorescent powder with different speed response characteristics, and applies them to speed detection, so that real-time and visualization of speed detection can be realized, the detection method is simplified, and production cost and learning cost of speed detection are saved.

The application discloses a friction luminescent material based on manganese-doped calcium gallium compound, which is synthesized by a high-temperature solid-phase method 1‑ x Mn x Ga4O7 stress luminescent fluorescent powder, wherein x is a mass percentage, and 0.001<=x<=0.01; the stress luminescent material is obtained after compounding with a resin mixing solution prepared from epoxy resin and a curing agent; Ca 1‑x Mn x Ga4O7 is a single-phase structure, meanwhile, Mn 2+ replaces the position of Ca 2+ into the crystal lattice; Ca 1‑x Mn x Ga4O7 has photoluminescence performance, the optimal excitation wavelength is 250nm, and the luminescence color is yellow; the stress luminescent fluorescent powder does not have stress luminescence performance under grinding conditions; the stress luminescent material has stress luminescence performance under friction conditions. The preparation method comprises the following steps: 1, preparation of a manganese-doped calcium gallium compound CGO-Mn; 2, preparation of a stress luminescent material CGOM based on the CGO-Mn. As the application of the stress luminescent material, the stress luminescent material has stress luminescence performance under friction conditions, emits yellow light with a wavelength of 530-650nm, and the strongest emission peak is 577nm.

This application provides a high-precision online coal quality detection device and method for thermal power plants, relating to the field of coal quality detection technology. It solves the technical problems in existing technologies, such as large sampling errors due to the natural inhomogeneity of coal, the inability of single-spectral technology to accurately detect organic and inorganic components simultaneously, and the poor generalization ability of online detection models across coal types and their difficulty in adapting to complex field environmental interference. The method includes: discretizing the coal flow on the coal conveyor belt into multiple individual coal particles, and causing the coal particles to impact a target plate at a constant velocity to generate triboluminescence; using a multi-channel photoelectric detection array to collect triboluminescence waveform data of each impact event in real time; preprocessing the triboluminescence waveform data; filtering out valid impact events based on the preprocessed triboluminescence waveform data; and extracting the spectral and temporal features of each event; inputting the extracted features into a pre-established physical model and deep learning network, and outputting the coal quality parameters of each individual coal particle.