51 results about "Oxygen sensing" patented technology

The invention discloses a method and a device for measuring the proportional oxygen concentration of a wood-based composite oxygen sensing material, and relates to the field of oxygen measurement. The technical problems that how to utilize wood to be compounded with metalloporphyrin, overcome the influence of excitation light source power on a test result and improve the anti-interference capability and stability of a sensor and the oxygen concentration test range in the prior art are solved. According to the invention, balsa wood is taken as a wood-based material, and metalloporphyrin Gd-HMME is embedded into the balsa wood, so that under the excitation of an ultraviolet laser, the ratio of a fluorescence signal to a phosphorescence signal of the wood-based composite material is taken as an optical parameter, and the oxygen concentration test is realized. The method is also suitable for the field of sensor preparation.

A dressing for treating a tissue site with negative pressure includes a cover, a wound contact layer, a manifold, and at least one sensor. The cover includes a first surface and a second surface. The wound contact layer includes a first surface and a second surface, wherein the second surface of the wound contact layer is configured to contact the tissue site. The manifold includes a first surface and a second surface. The manifold is configured to be disposed between the second surface of the cover and the first surface of the wound contact layer. The at least one sensor may include a plurality of oxygen sensing molecules dissolved in a polymer matrix. The at least one sensor is configured to change color to indicate a sensed oxygen level when the at least one sensor is acted on by the light source.

The utility model relates to a wireless temperature, humidity and oxygen sensing integrated transmitter, and belongs to the technical field of sensors. Comprising a shell, a control panel, a controller, a display screen, a wireless transmission module and a power module, the wireless transmission module is further connected with an antenna, the power module comprises a battery jar and a battery, an opening is formed in one side of the shell, a spring is arranged between the left side of the battery jar and the inner wall of the shell, and a probe reserved interface is installed at the front end of the shell; the spring can provide pulling force for the battery jar and stabilize the battery jar, the probe reserved interface can be connected with a temperature and humidity sensor probe or an oxygen sensor probe and can monitor temperature, humidity or oxygen content, the controller can send monitoring data to the display screen to be displayed and can send the monitoring data to a monitoring end through the wireless transmission module, and the battery can supply power to all the devices. An external power supply is not needed, and a battery is convenient to replace.

The invention discloses a method and a device for detecting the energy metabolism level of cells and organoids. According to the detection method disclosed by the invention, the acidification rate and the oxygen consumption rate of the extracellular microenvironment are obtained through signal response of hydrogen ions and the dissolved oxygen sensing electrode, and meanwhile, a dynamic detection microcavity is constructed by utilizing a metabolism detection device, so that the sensitivity and the accuracy of measurement are improved. By adopting different drug intervention schemes, the energy metabolism pathway of the cells can be regulated and controlled, so that the evaluation of the two energy metabolism pathways of glycolysis and aerobic respiration of the cells is realized. The in-situ and high-sensitivity cell energy metabolism detection method and device are provided by detecting the concentration change of the specific analyte of the extracellular microenvironment, the method has the universality of two-dimensional and three-dimensional cell models, a brand new platform is provided for scientific research and drug effect screening based on an in-vitro model, and the application prospect is wide.

The utility model discloses a medical intelligent oxygen concentration monitoring alarm device which comprises a monitoring meter, a display screen is fixedly arranged on the surface of one side of the monitoring meter, an indicator light is arranged at the bottom end of the display screen, an intelligent sensing device is fixedly arranged on the surface of the bottom end of the monitoring meter, a connecting rod is fixedly arranged on the surface of one side of the monitoring meter, and an alarm is arranged on the connecting rod. An audible and visual alarm device is fixedly arranged on the surface of one side of the connecting rod, the oxygen concentration in the oxygen tank is detected through the oxygen sensing head, the oxygen sensor converts monitoring information of the oxygen sensing head into electric signals and transmits the electric signals to the monitor, the monitor concrete concentration digits through the display screen, and when the concentration content is low, the audible and visual alarm device gives an alarm. At the moment, the monitor transmits a signal into a signal receiver through an internal signal transmitter, the signal receiver drives a loudspeaker and an alarm lamp, the loudspeaker transmits an alarm ring through a sound amplification hole, and the alarm lamp transmits alarm light through a lampshade to emit dazzling light beams, so that the device can conveniently alarm the oxygen concentration condition of medical staff.

The utility model provides an oxygen sensor and belongs to the technical field of sensors. The problem that an existing oxygen sensor does not have the filtering function is solved. The oxygen sensor comprises an oxygen sensor body, the oxygen sensor body is connected with an external controller through a connecting line, the oxygen sensor body is detachably provided with an air inlet piece, one end of the air inlet piece extends into the oxygen sensor body, and the other end of the air inlet piece extends out of the oxygen sensor body. Air inlet holes are formed in the peripheral side of the air inlet piece, a filter screen is arranged at the bottom of the air inlet piece, a sliding piece is arranged on the oxygen sensor body, a connecting spring is arranged between the sliding piece and the oxygen sensor body, a plurality of balls capable of moving left and right are arranged on the oxygen sensor body, and a first clamping groove is formed in the air inlet piece. A second clamping groove is formed in the sliding piece. The filter has the advantage of good filtering effect.

The utility model discloses an intelligent digital display fishing wheel which comprises a fishing wheel body, a simulation displayer is installed on the fishing wheel body, a state sensing assembly is installed on the fishing wheel body, when the intelligent digital display fishing wheel is used, the fishing wheel can conduct conventional take-up and pay-off operation, and in the fishing process, the simulation displayer can conduct state sensing through cooperation of a magnetic force sensor and a magnet. The state sensing assembly can judge whether throwing is successful or failed and display the result on the mobile phone, meanwhile, in the fishing process, the state sensing assembly detects the heart rate and blood oxygen changes of the fisherman when the fisherman gets on the fish and does not get on the fish through the heart rate and blood oxygen sensing module so that the fisherman can be detected in real time, and during field fishing, the fisherman can be accurately positioned through the positioning module; and a fisherman can be found in time. According to the fishing wheel, on the basis of taking up and paying off, the functions of detecting a fisherman in real time and judging whether the fishing rod is cast successfully or unsuccessfully are added, and the fishing wheel can be used by fishing enthusiasts.

The invention discloses a CMOS (complementary metal oxide semiconductor) blood oxygen sensing system and a working time sequence control method, and belongs to the technical field of biomedical sensing and semiconductor photoelectric integration. According to the system, a photoelectric detector array, a column-level analog-to-digital converter array, a multiplexer and a low-voltage differential signal transmission unit are integrated through a CMOS (Complementary Metal Oxide Semiconductor) process, and efficient separation and synchronous processing of multi-wavelength optical signals are realized in combination with a color filter array covering red light and infrared light. In the working process, the mixed light source emits visible light and near-infrared light, the visible light and the near-infrared light are separated through the optical filter and then converted into current signals through the photoelectric detector, the current signals are amplified into voltage signals through the capacitance negative feedback transconductance amplifier, the voltage signals are synchronously digitalized through the column-level ADC, and the voltage signals are transmitted to an external processor through the LVDS at the rate not lower than 1 Gbps to calculate the blood oxygen saturation degree. According to the invention, a full-digital signal link is adopted, the power consumption is obviously reduced, the anti-interference capability and the detection precision are improved, reflection-type and transmission-type dual-mode detection is supported, and wearable equipment and clinical scenes are adapted.

The application discloses a photosensitizer and tissue oxygen synchronous measurement device, and belongs to the technical field of photoelectric measurement. The application uses a semiconductor diode laser as an excitation source, the emission wavelength of which is determined according to the absorption characteristics of oxygen sensing material and photosensitizer, a laser beam is coupled into a detection optical fiber to form excitation light through optical components, so that the excitation light can excite the oxygen sensing material and the photosensitizer at the same time, the oxygen sensing material with near-infrared emission is used, the phosphorescence emission wavelength of which is far away from the fluorescence of the photosensitizer, the spectral intensity of near-infrared is used to determine the tissue oxygen concentration, the spectral intensity of red light is used to determine the concentration of the photosensitizer, in addition, the fluorescence and phosphorescence of the oxygen probe are both oxygen-dependent, so that the fluorescence intensity of the oxygen probe in the red light region can be accurately removed, thereby avoiding the influence of the fluorescence intensity of the oxygen probe on the detection of the photosensitizer fluorescence, and then realizing that the fluorescence for characterizing the photosensitizer concentration and the phosphorescence for characterizing the oxygen concentration are not overlapped, and realizing the synchronous measurement of the photosensitizer and the tissue oxygen.

The utility model relates to an oxygen sensing ceramic processing conveying line, its characterized in that: including conveying module, connecting module, clamping base and oxygen sensing ceramic clamping module, adopt the connecting module of plug -in type to install the oxygen sensing ceramic clamping module that entire installation is on clamping base on the conveying chain at equal intervals, this kind of connection can conveniently maintain and replace clamping base, the oxygen sensing ceramic clamping base with different size first arc -shaped groove can be embedded in T type through -slot, oxygen sensing ceramic clamping arm can be equipped with the clamping block with different second arc -shaped groove size to satisfy the clamping to different types of oxygen sensing ceramic, and the versatility is better, in addition, adopt oxygen sensing ceramic locking arm to lock the side of oxygen sensing ceramic clamping arm, guarantee the stability of oxygen sensing ceramic in the conveying process.

The invention relates to the technical field of sensing films, in particular to a preparation method of a fluorescent dissolved oxygen sensing film, which comprises the following steps: uniformly mixing a diamine and dianhydride mixture with a polar solvent in a protective gas atmosphere, stirring at 25-80 DEG C to carry out polymerization reaction for 0.5-2 hours to obtain a polyamide acid solution, and continuously adding the polar solvent to obtain the fluorescent dissolved oxygen sensing film. The viscosity of the polyamide acid solution is adjusted to be 40-100 cP, the mass percent of the mixture of the diamine and the dianhydride is 5-20%, the mass percent of the polar solvent is 80-95%, the molar ratio of the diamine to the dianhydride in the mixture of the diamine and the dianhydride is 1: (0.8-1.5), and at least one of the diamine and the dianhydride contains fluorine; adding a fluorescent indicator accounting for 0.01-5wt% of the polyamic acid solution into the polyamic acid solution, and uniformly mixing to obtain a mixed solution; coating the surface of a base material with the mixed solution, and performing high-temperature curing in a protective gas atmosphere; and naturally cooling the base material on which the fluorescent layer is formed to room temperature to obtain the fluorescent dissolved oxygen sensing film. The high temperature resistance and air permeability of the sensing film are improved.

Photochromic composites are described herein comprising pyridinium thiazolothiazole compounds disposed in various non-hydrogel polymeric matrix constructions. As described further herein, such composites can find employment in a number of applications, including oxygen sensing, NIR photonic and communications, and various technologies requiring light-induced color changes, such as non-electrochromic tinting.

The invention discloses a monitoring and physical therapy type glove, and relates to the technical field of physical therapy gloves, the monitoring and physical therapy type glove comprises a glove body and a blood oxygen detection device, the glove body comprises an outer layer and an inner layer which are sequentially arranged from outside to inside, the inner layer comprises magnetic therapy layers, and the magnetic therapy layers are arranged corresponding to finger parts and palm parts of the glove body; a blood oxygen sensing sheet of the blood oxygen detection equipment is arranged on the inner side of the magnetic therapy layer; when a user wears the glove body, magnetic therapy massage on the hand can be completed through the magnetic therapy layer, blood oxygen can be monitored through the blood oxygen sensing piece, the glove body has the magnetic therapy massage function and the blood oxygen saturation monitoring function, and meanwhile the portability of the glove can be effectively improved through the integrated design.

The invention discloses a neonatal resuscitation auxiliary system based on white noise and bionic stroking. The neonatal resuscitation auxiliary system comprises a resuscitation master control module, a white noise generation module, a bionic stroking module, a physical sign monitoring module and a man-machine interaction module. The white noise generation module comprises an audio processing unit, a loudspeaking unit and a volume adjusting unit, and is used for generating and playing white noise with a specific frequency spectrum and a sound pressure level; the bionic stroking module comprises a driving unit, a stroking execution unit and a pressure sensing unit; the physical sign monitoring module comprises a heart rate sensing unit, a blood oxygen sensing unit and a body temperature sensing unit; the man-machine interaction module comprises a display screen and a keyboard. According to the invention, by combining two kinds of stimuli of white noise and stroking according with neonatal neurophysiological characteristics, a synergistic effect is generated, the stability of respiratory circulation is more effectively promoted, the uncertainty of traditional manual operation stimuli is replaced, and the stimuli parameters can be accurately controlled and repeated, so that clinical research and effect evaluation are facilitated.

The invention provides a preparation method of a ternary copolymerized oxygen sensing microsphere, which comprises the following steps: selecting styrene (St), trifluoroethyl methacrylate (TFEMA) and butyl acrylate (BA) with different volume ratios as copolymer monomers, platinum octaethylporphyrin (PtOEP) as an indicator, azodiisobutyronitrile (AIBN) as an initiator and lauryl sodium sulfate (SDS) as an emulsifier, and preparing the ternary copolymerized oxygen sensing microsphere by using a hydrothermal method. The preparation method comprises the following steps: preparing a terpolymer microsphere emulsion with oxygen sensing performance, and then changing the proportion content of styrene (St), trifluoroethyl methacrylate (TFEMA) and butyl acrylate (BA) so as to prepare terpolymer microsphere emulsions with different volume ratios. Finally, the optimal volume ratio of styrene (St) to trifluoroethyl methacrylate (TFEMA) to butyl acrylate (BA) is obtained by testing different properties of the ternary copolymerized oxygen sensing microspheres.

A composition and method for measuring the oxygen partial pressure of a tissue. The composition is implanted subcutaneously or into an organ inside a human body, and the oxygen partial pressure of the tissue is measured by fluorescence.

The application discloses a plateau special-purpose extremely simple intelligent monitoring nasal oxygen tube adapting device and relates to the technical field of medical nursing instruments.The application comprises an ear-hanging flexible fixing support, a micro main control box and a blood oxygen sensing and detecting head, the ear-hanging flexible fixing support is detachably sleeved outside a general nasal oxygen tube, the blood oxygen sensing and detecting head is electrically connected with the micro main control box, a main control module, a vibration early warning module and a power supply module are arranged in the micro main control box, a data processing unit and a blood oxygen threshold value determination program are arranged in the main control module, the vibration early warning module is connected with the main control module and realizes silent alarm through mechanical vibration, and the power supply module supplies power to each component.The blood oxygen detection site is far away from an oxygen supply area, airflow interference is eliminated, the special environment of plateau low temperature and poor peripheral circulation is adapted, detection data is accurate and stable, silent early warning is achieved through vibration, no light and loudspeaker noise are generated, night-time disturbance is avoided, and the application is suitable for long-term continuous monitoring in a ward.

The invention discloses a pneumatically-controlled cerebral arterial thrombosis dynamic micro-fluidic blood vessel chip integrated oxygen sensing system. The system sequentially comprises a perfusion channel layer, a deformation layer, a glass oxygen barrier layer and a pore control layer from top to bottom, the perfusion channel layer is connected with an injection pump through an external silicone tube and is used for realizing dynamic culture of cells in the channel; the deformation layer is an elastic film and is deformed along with the increase of external air pressure, so that the channel forms a narrow area, and an oxygen probe is arranged in the elastic film and is used for oxygen monitoring; the air hole control layer is connected with a vacuum pump through an external silicone tube and applies air pressure to the deformation layer. The deformation layer is effectively controlled through an external vacuum pump, so that the stenosis of a channel is accurately controlled, different stenosis of blood vessels under physiological conditions is simulated, and changes of mechanical microenvironments such as fluid shear force, culture solution flow rate and flow and oxygen content chemical microenvironments are recorded; and a convenient and effective new platform is provided for studying the injury mechanism of ischemia reperfusion.

The present invention relates to highly porous, bioresorbable electrospun sensors for optical detection of tissue oxygenation and processes of making and using same. Multiple sensor compositions are described that are focused on different applications / oxygen ranges. Such sensors alleviate the risk of leaving the sensor implanted in a subject, typically have as good or better oxygen sensing capabilities and comparable performance life span as non-degradable sensors and unlike sensors made from general bioresorbable materials maintain a desired porosity as they degrade. Thus, such sensors may remain integrated in a subject's body while they degrade and maintain the ability to sense oxygen for their performance life span.

The utility model relates to a split type wireless temperature, humidity and oxygen sensing transmitter, and belongs to the technical field of storage monitoring. Comprising a shell, five temperature and humidity probes, an oxygen probe, a prompting lamp, a controller, a wireless transmission module, a control panel and a remote monitoring end, and the five temperature and humidity probes and the oxygen probe are installed at the front end of the shell; a plurality of probe sockets connected with the controller are arranged on the control panel, and a plurality of temperature and humidity probes and oxygen probes are connected with the probe sockets through wires, so that oxygen content in a storage environment or a material and temperature and humidity at different positions can be acquired at the same time, and data are sent to a remote monitoring end through a wireless transmission module; a worker can remotely monitor the temperature and humidity, timely knowing and handling of abnormity are facilitated, wireless transmission is realized, and wiring trouble is saved.

The invention relates to the technical field of biological interface sensing, in particular to a multi-mode soft stretchable wearable sensing patch and a preparation method and application thereof, the sensing patch comprises a stretchable substrate, a blood oxygen sensing unit, a myoelectricity sensing unit and a muscle sound sensing unit; the stretchable substrate comprises a front surface and a back surface which are opposite; the blood oxygen sensing unit and the myoelectricity sensing unit are sequentially arranged on the front face of the stretchable substrate. The blood oxygen sensing unit and the myoelectricity sensing unit are separated through a first packaging layer, and the myoelectricity sensing unit is packaged through a second packaging layer; the muscle sound sensing unit is located on the back face of the stretchable substrate. The wearable sensing patch provided by the invention can be stably attached to the skin under a dynamic condition; moreover, multi-modal integrated acquisition of myoelectricity, muscle sound and blood oxygen signals can be realized on the sensing patch, and meanwhile, real-time, dynamic and synchronous monitoring of multi-modal signals is realized, so that a reliable basis is provided for comprehensive evaluation of the physiological state of a human body.

The invention relates to a trace oxygen content measuring device and method, the device comprises an oxygen pump unit, an oxygen sensing unit, a common electrode unit, a microprocessor and a heating assembly, the current of the oxygen pump unit is in positive correlation with the oxygen content in the environment, and the oxygen sensing unit outputs a voltage signal in proportion to the oxygen content. And the microprocessor adjusts the current of the oxygen pump unit according to the signal of the oxygen sensing unit and maintains the voltage signal at a preset target value to form closed-loop control. The heating assembly keeps the temperature of the sensor constant. The device can realize ppm-level accurate measurement, has high stability and accuracy, reduces the maintenance cost, reduces the reject ratio, improves the production efficiency, reduces the manufacturing cost, and is suitable for various industrial environments. The method is particularly suitable for inert reflow soldering and wave soldering, and the soldering quality and the product reliability are improved.

Apparatus, systems, and methods are provided that generate in vivo maps of oxygenation measurements of biological tissue. These may include surgical instruments and stand-alone imaging systems with incorporated oxygen sensing capability. Oxygenation maps can be determined via fluorescent or phosphorescent lifetime imaging of an injectable probe with an oxygen-dependent optical response. Probe configuration and methods and apparatus of injecting the probe into the tissue are provided. Methods and apparatus for temperature compensation of temperature-dependent lifetime measurements are provided to improve oxygenation measurement accuracy. Oxygen maps may be registered with visible light images to assist in assessing tissue viability or localize anomalies in the tissue. Resulting oxygen images may be used for various applications including, but not limited to, guiding surgical procedures such as colorectal resection through use of intraoperative sensing, enhanced endoscopic imaging for identifying suspect lesions during colonoscopy, and external imaging of tissue such as assessing peripheral vascular disease.

The application discloses a nitrogen-oxygen sensor, a nitrogen-oxygen sensing control system and a method for measuring nitrogen-oxygen, and the nitrogen-oxygen sensor comprises a sensor element, a gas diffusion path is arranged in the sensor element, a first diffusion barrier and a second diffusion barrier are sequentially arranged on the gas diffusion path, a functional electrode group is arranged on the sensor element, and a heater is integrated on the sensor element and used for heating the sensor element; the functional electrode group comprises an oxygen electrode unit, a reference electrode unit, a nitrogen oxide electrode unit and a common electrode unit, the oxygen electrode unit is used for pumping oxygen and generating a first current signal positively related to the oxygen concentration, the reference electrode unit is used for detecting the oxygen partial pressure, and the nitrogen oxide electrode unit is used for decomposing nitrogen oxide and generating a second current signal positively related to the nitrogen oxide concentration; and the application can simplify the sensor structure, reduce the manufacturing cost, and improve the measurement accuracy of the oxygen and nitrogen oxide concentration, the anti-interference ability and the high-temperature stability.

The invention discloses a super-hydrophobic wood-based optical oxygen sensing material as well as a preparation method and application thereof, and belongs to the technical field of optical sensing composite materials. The invention aims to overcome the problems of strong hygroscopicity, unstable signal, insufficient surface performance and the like of the existing wood-based optical oxygen sensor. According to the invention, balsa wood is taken as a matrix, metalloporphyrin Gd-HMME is loaded in the matrix, and the surface of the matrix is coated with a PDMS / SiO2 coating, so that the material is endowed with a super-hydrophobic characteristic. Under excitation of an ultraviolet laser, the material can realize effective detection of oxygen concentration. The surface energy of the sensing material is low, pollution is not easy to adhere, signal drift caused by humidity and water vapor is avoided, and the reliability of a sensing result is remarkably improved.

The utility model relates to a full premix wall-hanging stove self-adjusting structure, it includes wall-hanging stove body and oxygen sensing analysis structure, the wall-hanging stove body includes wall-hanging stove control module, exhaust pipe and communication interface, oxygen sensing analysis structure includes oxygen sensing analysis module, flue gas detection transmission channel and signal transmission channel, one end of the flue gas detection transmission channel is connected with the oxygen sensing analysis module, the other end of the flue gas detection transmission channel is connected with an oxygen sensing probe, the oxygen sensing probe corresponds to the smoke exhaust pipe and is detachably connected to the smoke exhaust pipe, one end of the signal transmission channel is connected with the oxygen sensing analysis module, and the other end of the signal transmission channel is connected with the oxygen sensing analysis module. And the other end of the signal transmission channel is connected with the communication interface of the wall-hanging stove body.

Road structure layer maintenance detection equipment comprises an overground detection unit, an underground detection unit, a control system and a feeding bin, and the control system and the feeding bin are located on one side of a road; the overground detection unit comprises a camera, and the camera is connected with the control system and used for obtaining road surface image information; the underground detection unit comprises a pavement structure layer located on the upper layer, a pavement structure cushion layer located on the lower layer and a bionic pipeline located in the middle, the bionic pipeline is communicated with the feeding bin, and a photosensitive and oxygen sensing component electrically connected with the control system and a membrane potential control unit duct piece are arranged in the bionic pipeline. The invention also provides a corresponding detection method, the crack is effectively supervised through the camera before and after repair, the crack judgment accuracy is improved, effective processing can be ensured in the initial stage of crack occurrence, and the problem that the repair difficulty is increased due to the fact that the crack cannot be detected and is too long due to a single monitoring source is prevented.

The present application relates to a kind of photonic crystal-based oxygen sensing film and its preparation method, the oxygen sensing film includes: by the photonic crystal substrate formed by the self-assembly of periodically arranged microspheres, the oxygen-sensitive probe layer of phosphorescent metalloporphyrin compound attached to the photonic crystal substrate;The photonic crystal substrate has the photonic band gap matched with the emission peak wavelength of oxygen-sensitive probe.The oxygen sensing film in the present application is synergized by the Purcell effect of the band edge of photonic crystal and the slow light enhancement effect, realizes the high sensitivity, fast response and good selectivity of oxygen detection, and preparation process is environmentally friendly controllable.

The invention discloses a room-temperature phosphorescent material as well as a preparation method and application thereof. The room-temperature phosphorescent material has a structure as shown in the following formula, wherein R is selected from any one of-F,-Cl,-CN,-CF3,-CH3,-H,-OCH3 and-OCF3. The room-temperature phosphorescent material is of a semi-alicyclic structure with a unique EXO configuration, different molecular stacks are formed through hydrogen-bond interaction of amino groups on different benzene rings, the room-temperature phosphorescent material with oxygen sensitivity and oxygen retardation is prepared, and the room-temperature phosphorescent material has great application prospects in the fields of organic photoluminescence and oxygen sensing detection.