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55 results about "Carbon Dioxide Measurement" patented technology
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A quantitative measurement of the gas carbon dioxide present in a sample.
Nasal cannula
InactiveUS6439234B1Reduces and eliminates incidenceAccurate monitoringOperating means/releasing devices for valvesRespiratory masksGas analysisNose
Owner:SALTER LABS
Large-range carbon dioxide monitoring system based on wireless sensor network
InactiveCN101881762AImprove accuracyOvercoming real-timeTransmission systemsNetwork topologiesTransceiverWireless mesh network
The invention discloses a large-range carbon dioxide monitoring system based on a wireless sensor network, which comprises a monitoring server. The monitoring server is connected with a plurality of carbon dioxide monitoring devices at different positions in an atmospheric environment in a wireless mode; the carbon dioxide monitoring devices comprise power modules, microprocessors, carbon dioxidemonitoring sensors connected with the microprocessors, and wireless radio frequency transceiver modules; the power modules supply power to the whole carbon dioxide monitoring devices; the carbon dioxide monitoring devices are mutually connected and communicate through the respective wireless radio frequency transceiver module. The invention carries out large-range unified monitoring on the content of carbon dioxide in complex environments and places through the multi-hop mechanism of the wireless sensor network, improves the accuracy of carbon dioxide measurement by utilizing a parsing algorithm, overcomes the problem of high difficulty of real-time accurate large-range carbon dioxide monitoring and is suitable for various large-range complex environments.
Owner:XI AN JIAOTONG UNIV
Method and system with divided cannula having low oxygen flow rate and improved end-tidal co2 measurement
ActiveUS20140276169A1Facilitate communicationIncrease supplyRespiratory masksMedical devicesNostrilIntensive care medicine
A nasal cannula which comprises a face piece comprising first and second nares which each communicate with a respective nostril of a patient. A septum divides the face piece into first and second flow paths such that the first flow path communicates with the first nare and the second flow path communicates with the second nare. A leading end of the first nare is configured to form a fluid barrier within a first nostril and facilitate only supplying an insufflation gas, via the first flow path, to the patient and prevent exhausting any of exhaust gas, of the patient, through the first nostril of the patient. A leading end of the second nare is configured to facilitate collecting some of the exhaust gas, from the patient, via the second flow path as well as exhausting a remainder of the exhaust gas out through a second nostril of the patient.
Owner:SALTER LABS LLC
System and method suitable for measurement, control and calibration of carbon dioxide in greenhouse environment
ActiveCN102523954AChange the way of beingHigh measurement accuracyHorticulture methodsMaterial analysisWireless controlGreenhouse
The invention relates to the technical field of measurement, control and calibration of facility production carbon dioxide and discloses a system and a method suitable for measurement, control and calibration of carbon dioxide in a greenhouse environment. The system comprises a wireless carbon dioxide measuring device (16) and a wireless control device (18). The wireless carbon dioxide measuring device (16) is used for collecting fertilization concentration of carbon dioxide in a greenhouse, photosynthetically active radiation values, air temperature and humidity data and storing air fertilizer standard values of different crops at different growth periods so as to serve as a decision basis for carbon dioxide concentration fertilizing time and fertilizing amount. The wireless control device (18) is used for obtaining the data and the standard values from the wireless carbon dioxide measuring device (16) and controlling instructions to perform carbon dioxide fertilization control. The wireless carbon dioxide measuring device (16) adopts calibration methods including gas concentration change rate tracking, outdoor gas concentration, temperature and humidity compensation and the like to perform carbon dioxide calibration. The system and the method can achieve measurement, control and calibration of carbon dioxide in the greenhouse environment.
Owner:BEIJING RES CENT OF INTELLIGENT EQUIP FOR AGRI
Carbon dioxide measuring device
InactiveUS20110226042A1Effective combinationImprove reliabilityGas analyser construction detailsMaterial electrochemical variablesEngineeringElectromotive force
The present invention relates to a carbon dioxide measuring device, and more particularly, to a carbon dioxide measuring device in which a reference electrode signal transfer pattern is formed on one side of a heating unit to connect an electromotive lead wire for measuring carbon dioxide concentration to the outside of a portion at which the heating unit contacts a carbon dioxide sensor to thereby prevent generation of a gap, and a problem that a sealant is diffused into the reference electrode to have an effect on electromotive force is prevented to thereby increase durability and accuracy and also increase reliability of measurement of carbon dioxide concentration.
Owner:CIOS
Three-dimensional simulation culture system for stem cells
InactiveCN110129199AQuality improvementA large amountBioreactor/fermenter combinationsBiological substance pretreatmentsDialysis membranesPeristaltic pump
The invention discloses a three-dimensional simulation culture system for stem cells, and belongs to the technical field of biology. The invention solves the problems of complex operation, low efficiency, small yield and poor quality in an existing in-vitro culture of stem cells. The three-dimensional simulation culture system for the stem cells comprises a stem cell nest, a heart region first peristaltic pump, a lung region, a kidney region, a spleen region, a stomach region, a liver region, a first fluid pressure gauge, a first pressure regulating valve, a liquid level meter, a three-way valve, a first control valve, a temperature regulator, a thermometer, an oxygen / carbon dioxide measuring instrument, a PH measuring instrument, a nutritional ingredient measuring instrument, a second control valve, a second peristaltic pump, a third peristaltic pump, a urea / uric acid / inorganic salt measuring instrument, a fourth peristaltic pump, a third control valve, a second fluid pressure gauge,a second pressure regulating valve, a fourth control valve, a fifth control valve, a fifth peristaltic pump, a sixth control valve, a gas permeable membrane, a dialysis membrane, a central control platform, a cloud data center and an electromagnetic field. According to the three-dimensional simulation culture system for the stem cells, the stem cells with higher quality and quantity can be cultured, the stability is good, and the treatment effect of the stem cells is improved.
Owner:哈尔滨工大国际干细胞工程研究院有限公司
Devices and methods for calibrating a colorimetric sensor
InactiveUS20180328841A1Improve accuracyReduced responsivenessRespiratorsMaterial analysis by observing effect on chemical indicatorEngineeringColorimetric sensor
Quantitative colorimetric carbon dioxide measurement and measurement systems and methods are disclosed. The methods can include methods for calibrating a chemical colorimetric indicator used in the quantitative colorimetric carbon dioxide measurement system. Apparatuses are disclosed including a cartridge comprising a chemical colorimetric indicator that is configured to removably engage with a quantitative colorimetric measurement system. Cartridges containing a sealed container comprising a reference gas with a known concentration of carbon dioxide are also disclosed. Systems and methods for humidifying the chemical colorimetric indicator are also provided. Methods for using the systems are also disclosed including providing a breathing therapy to a patient or user.
Owner:FREESPIRA INC
Neonatal carbon dioxide measurement system
ActiveUS20150065900A1Accurate measurementHomogeneity of differentRespiratory organ evaluationSensorsRapid respirationsIntensive care medicine
A breath parameter measuring device is described which takes into account breathing patterns which historically have been incompatible with accurate measurements. In particular, during fast breathing patterns, the sensor performing the measurement may not be able to respond quickly enough to provide the true reading. The disclosure may be useful for example in the case of neonatal breath carbon dioxide measurements.
Owner:CAPNIA INC
Air delivery pipe of breathing mask and breathing mask
The invention relates to an air delivery pipe of a breathing mask and the breathing mask. The air delivery pipe of the breathing mask is suitable to be connected with a carbon dioxide measurement device; the air delivery pipe comprises a first pipe casting, a second pipe casting and a check valve; the first pipe casting comprises a shell; the shell defines a bottom end, a top end, an air holding chamber positioned between the bottom end and the top end, an air exhaust hole which is positioned between the bottom end and the top end and used for communicating the air holding chamber and the external part, and a through hole which is positioned between the bottom end and the top end and used for communicating the air holding chamber and the carbon dioxide measurement device; the top end is provided with an opening so that the air holding chamber is communicated with the external part; the second pipe casting is inserted into the air holding chamber of the shell and comprises an air inletpositioned at the bottom end of the shell, and an air outlet extruded out of the top end of the shell; the check valve is arranged on the shell and used for closing the air exhaust hole; and the check valve can be opened so that air in the air holding chamber can be exhausted from the air exhaust hole. By the air delivery pipe, a carbon dioxide concentration value of air exhaled by a patient can be measured accurately.
Owner:GALEMED (XIAMEN) CO LTD
Ventilated safety elevator for smart city
InactiveCN106829679AImprove comfortQuality improvementElevatorsBuilding liftsAutomobile platformSmart city
The invention discloses a ventilated safety elevator for smart cities, comprising a car, an active fan, an active air intake pipe, a dynamic air intake pipe, a purification channel, an air purification device, an air outlet channel, an exhaust port, an anion generator, carbon dioxide The measuring instrument, the installation window, the U-shaped support frame, the lower beam, the permanent magnet, the first through hole, the second through hole, and the upper surface of the U-shaped support frame are uniformly provided with a plurality of shock absorbing mechanisms, and the top of the shock absorbing mechanism is provided with The movable car bottom is provided with a door-shaped connecting bracket between the second through holes. The invention is simple and reasonable in structure, quick and convenient to use, improves the comfort of passengers, improves the quality of the air entering the car, and increases the safety of the elevator ride; the cushioning airbag avoids the contact and friction between the car and the well wall, When driving, the airbag can play a certain buffering role, and the safety factor is greatly improved.
Owner:TERMINUSBEIJING TECH CO LTD
Co2 sensor and co2 measuring apparatus
ActiveUS20120330161A1Reduce power consumptionImprove securityDiagnostics using spectroscopyRespiratory organ evaluationBiological bodyMedicine
A CO2 sensor includes: a sensing portion operable to change in color in accordance with a CO2 partial pressure in expiration from at least one of nares and a mouth of a living body; and a mounting member adapted to hold the sensing portion at a position where the expiration from the at least one of the nares and the mouth impinges on the sensing portion.
Owner:NIHON KOHDEN CORP
Detection method for quickly measuring components of coarse coal gas and related device
ActiveCN106153431ASolve analysis problemsReduce precisionComponent separationPreparing sample for investigationGas phaseChromatography column
Owner:SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
Carbon dioxide measurement kit
InactiveCN103558370AEasy to useEasy to operateBiological testingFlavin adenine dinucleotidePhosphoenolpyruvate carboxylase
The invention provides a carbon dioxide measurement kit. The carbon dioxide measurement kit mainly comprises the following components: 50 to 200mM of a buffer solution, 10 to 50% of a stabilizer, 0.1 to 5% of a surface active agent, 0.1 to 5g / L of a preservative, 1 to 20mM of a reaction accelerator, 2 to 10mM of 3-acetylpyridine adenine dinucleotide (reduction type), 5 to 50g / L of phosphoenolpyruvic acid, 50 to 500U / L of phosphoenolpyruvate carboxylase, and 1 to 3KU / L of malate dehydrogenase; a recycling system of 3-acetylpyridine adenine dinucleotide (reduction type) comprises (1) 2 to 20g / L of glucose substrate, (2) 100 to 2,000U / L of corresponding glucose dehydrogenase, and (3) 1 to 5mM of 3-acetylpyridine adenine dinucleotide. The carbon dioxide measurement kit is convenient to use and simple to operate; the components participating in coupling reaction are extra added, so that no pollution caused by endogenous and allogenic substances are introduced; the rate of the recycling system is below the main reaction rate, thus the main reaction cannot be interfered; the carbon dioxide measurement kit is high in stability and can be used for a long time.
Owner:QINGDAO JINYANG BIOTECH
Carbon dioxide concentration monitoring system based on computer
InactiveCN106094897AHigh measurement accuracyPrecise control of concentrationFlow control using electric meansCarbon dioxide cylinderCarbon dioxide gas cylinder E
The invention discloses a greenhouse carbon dioxide concentration monitoring system based on a computer, which is characterized by comprising a carbon dioxide concentration sensor, a temperature sensor, a numerical value processing unit, a light sensor and a control unit, wherein the temperature sensor is connected with the first input end of the numerical value processing unit; the output end of the carbon dioxide concentration sensor is connected with the second input end of the numerical value processing unit; the output end of the numerical value processing unit is connected with the first input end of the control unit; the output end of the light sensor is connected with the second input end of the control unit; and according to data of the light sensor, the control unit controls a carbon dioxide cylinder to output a flow and carries out concentration overload alarming. A carbon dioxide concentration compensation and temperature relationship curve is acquired, and according to the acquired carbon dioxide measurement concentration and the carbon dioxide compensation value, an equivalent carbon dioxide concentration is acquired; and finally, according to the carbon dioxide concentration and the light information, the output flow of the carbon dioxide cylinder is controlled, and the purpose of precisely controlling the carbon dioxide in the greenhouse is achieved.
Owner:CHONGQING RADIO & TV UNIV
Signal quality determination and signal correction system and methods
ActiveUS8357099B2Improve accuracyThe process is fast and accurateRespiratorsMedical devicesAirway adaptorSignal quality
Owner:PHILIPS RS NORTH AMERICA LLC
Method and device for monitoring and/or determining the condition of a measurement probe
ActiveCN101568827AAvoid mutual influenceMaterial analysis by electric/magnetic meansPotential measurementHydrogen
The method involves measuring the ion concentration of a process material (6) by a measurement probe (1) provided with an electrode (EL) e.g. a hydrogen potential measurement probe, an oxygen measurement probe, or a carbon dioxide measurement probe. The measuring probe is provided with a monitoring phase (Tp). A charge accumulator (Q2) associated with the electrode is charged by a charge transfer which is controllable through a control unit (CU) during a charging phase (TL). The resulting electrode voltage (UE) is measured in a subsequent test phase (TT). An independent claim is also included for a device for monitoring the condition of an electrochemical measurement probe.
Owner:METTLER TOLEDO INSTR SHANGHAI
Method of co2 measurement during non-invasive ventilation
A method (200) for measuring a patient's expired CO2 level in a non-invasive ventilator system (100) while maintaining a positive inspiratory pressure. The method includes the steps of: receiving (220), by the non-invasive ventilator system, a signal comprising an instruction to obtain a CO2 measurement from a patient; lowering (230), by the non-invasive ventilator system in response to the signal, the expiratory positive airway pressure from a first, higher level to a second, lower level for a first time period comprising one or more breaths; obtaining (240), by a CO2 sensor (160), a CO2 measurement during the first time period; and returning (250), after the first time period, the expiratory positive airway pressure to the first, higher level.
Owner:KONINKLJIJKE PHILIPS NV
Fluorinated aromatic hydrocarbon polymer capillary tube gas-permeable membrane sample cell, measuring device and measuring method thereof
InactiveCN101858852AHigh precisionQuick responseColor/spectral properties measurementsMeasuring instrumentCoupling
The invention relates to the measurement field of carbon dioxide, in particular to a fluorinated aromatic hydrocarbon polymer capillary tube gas-permeable membrane sample cell which comprises (1) a sleeve, (2) a fluorinated aromatic hydrocarbon polymer capillary tube, (3) a first sample inlet tube and a second sample inlet tube, (4) a first optical liquid coupling device and a second optical liquid coupling device as well as (5) a first tracer agent tube and a second tracer agent tube, wherein the left and the right sides of the sleeve are respectively provided with an injection hole and a discharge hole; the length of the fluorinated aromatic hydrocarbon polymer capillary tube is longer than that of the sleeve; the capillary tube is inserted into the sleeve from the left end, and is inserted out of the sleeve from the right end; the first sample inlet tube is connected with the injection hole of the sleeve, and the second sample inlet tube is connected with the discharge hole of the sleeve; the first optical liquid coupling device is provided with a three-end joint, and the second optical liquid coupling device is also provided with a three-end joint; and the first tracer agent tube is connected with a second joint of the first optical liquid coupling device, and the second tracer agent tube is connected with a second joint of the second optical liquid coupling device. Compared with the prior art, the invention has high sensing sensitivity and large dynamic range, and is very suitable for researching and developing a CO2 partial pressure field measuring instrument with high accuracy, rapid response and low power consumption.
Owner:SOUTH CHINA SEA INST OF OCEANOLOGY - CHINESE ACAD OF SCI
CO2 concentration detection method with main-flow-type water vapor influence reduction
InactiveCN105241835AThe concentration value is accurateColor/spectral properties measurementsWater vaporWave form
The invention discloses a CO2 concentration detection method with main-flow-type water vapor influence reduction, wherein a three-channel pyroelectric sensor is employed and includes a CO2 measurement channel, a reference channel and a water vapor measurement channel. The method comprises the following steps: determining peak values and valley values of all terminals according to data collected in the three channels; extracting voltage peak values of the water vapor measurement channel and the reference channel, calibrating a wave form formed by subtracting the two voltage peak values to obtain the voltage peak values corresponding to different water vapor concentrations; extracting the voltage peak values of the CO2 measurement channel and the reference channel, calibrating the wave form by subtracting the two voltage peak values to obtain the voltage peak values corresponding to different CO2 concentrations with the water vapor influence; obtaining a fitted curve of the voltage peak values corresponding to different CO2 concentrations without the water vapor influence; and performing real-time measurement. The method can increase measurement precision of CO2.
Owner:TIANJIN UNIV
Portable Beidou environment detector
InactiveCN107621642AAchieve positioningSatellite radio beaconingParticle suspension analysisInformation processingEngineering
The invention relates to a portable Beidou environment detector which is composed of an antenna module, an information processing board, a PM2.5 module, a formaldehyde module, a carbon dioxide module,a display and control unit, a power module, and a battery module. Compared with the prior art, the portable Beidou environment detector has the advantages of high positioning accuracy, high accuracyof PM2.5, formaldehyde and carbon dioxide measurement, timing service, and the like, and can be widely applied to indoor and outdoor environment detection, outdoor navigation and fields needing time unification.
Owner:西安康帕斯电子科技有限公司
Blood flow velocity calculation method and device, terminal equipment and storage medium
ActiveCN110664392AGuaranteed accuracyDiagnostic recording/measuringSensorsTerminal equipmentBlood velocity
The invention provides a blood flow velocity calculation method and device, terminal equipment and a storage medium. The blood flow velocity calculation method and device, the terminal equipment and the storage medium are applicable to the technical field of computers. The blood flow velocity calculation method includes the steps that measurement values of end-expiratory carbon dioxide of a sampleto be measured at each time are acquired; coordinates of each preset position of blood vessels are acquired according to a preset vascular geometric model of the sample to be measured; according to the measurement values of the end-expiratory carbon dioxide at each time, a preset dynamic model, a preset physiological model of the sample to be measured and coordinates of the positions of blood vessel outlets, boundary conditions of each time are calculated; and the boundary conditions of each time and the coordinates of each preset position of the blood vessels are input into the dynamic modelto calculate the blood flow velocity of each preset position of the blood vessel at each time. According to the blood flow velocity calculation method and the device, the terminal equipment and the storage medium, the physiological model of blood flow is combined with the geometric model of blood flow to calculate the blood flow velocity, and the accuracy of the calculation results is ensured.
Owner:珠海中科锐博医疗科技有限公司
Oxygen mask with carbon dioxide diagram monitoring port
The invention discloses an oxygen mask with a carbon dioxide diagram monitoring port, and relates to the technical field of the oxygen mask. The oxygen mask with the carbon dioxide diagram monitoring port comprises a mask body. The left and right sides of the mask body are opened with connecting holes. Two sides of the mask body are connected with elastic belts by the connecting holes. The middle part of the outer wall of the mask body is connected with an oxygen hose locking head. The outer wall of the oxygen hose locking head is connected with an oxygen conveying pipe. The outer circle of the oxygen hose locking head is uniformly opened with air holes. The bottom of the outer wall of the mask body is connected with a carbon dioxide detecting port. The outer wall of the carbon dioxide detecting port is connected with a carbon dioxide conveying pipe. The left end of the mask body is covered by a rubber soft cushion. The oxygen mask with the carbon dioxide diagram monitoring port is capable of, through a carbon dioxide measurer, measuring the content of the carbon dioxide in the mask body and displaying in a display unit, and sending an alarm by an audible and visual alarm while the data of the carbon dioxide content exceeds the preset value. The humanization is better.
Owner:河南省中医院(河南中医学院第二附属医院)
Uncertainty Analysis Method for Determination of Carbon Dioxide Concentration in Industrial Flue Gas Based on Infrared Spectroscopy
InactiveCN107179289BEliminate distractionsGood repeatabilityMaterial analysis by optical meansStandard uncertaintyFlue gas
The invention discloses an uncertainty analysis method for measuring a carbon dioxide (CO2) concentration in an industrial flue gas based on infrared spectrometry. The method comprises the following steps of (1), constructing a carbon dioxide measurement system to measure the CO2 concentration in the industrial flue gas; (2), determination the sources of uncertainties: a standard uncertainty introduced by repeated measurement, a standard uncertainty introduced by linear regression, a standard uncertainty introduced by a standard gas, a standard uncertainty introduced by instrument measurement, a standard uncertainty introduced by an intercept and a standard uncertainty introduced by a slope; (3), synthesizing a relative standard uncertainty; (4), synthesizing a relative expanded uncertainty. By using the method, uncertainty components introduced by a system error and a random error are completely analyzed in uncertainty analysis and evaluation processes; the measurement uncertainty of the CO2 concentration in the industrial flue gas is finally obtained. Related data is accurate and reliable; reliable method and basis are provided for metering the carbon emission of the industrial flue gas.
Owner:HENAN PROVINCE INST OF METROLOGY
Medical breathing carbon dioxide measurement system
PendingCN108732176ALow costAvoid measurement effectsMaterial analysis by optical meansSignal onBreathing process
A medical breathing carbon dioxide detection system comprises light source and an air chamber, the air chamber is used for gas (to be measured) to pass through, and the light source is used for illuminating the air chamber to form an optical path. And further comprises a chopping wheel disk, a motor, a detector and a processor, the chopping wheel disk is provided with a plurality of measurement windows, one of which is used for encapsulating the standard gas with known concentration, the motor is used for driving the chopping wheel disk which is arranged on the optical path, the single opticalpath is divided into a plurality of measurement channels; the detector is used for acquiring the signal on the measurement channels and sending the signal to the processor for processing; the processor is also used for controlling the light source. Due to a plurality of measurement channels require only one detector, the cost is reduced, when performing zero point correction, the standard gas with known concentration is accorded with without the introduction of external air as the zero reference point, the impact of the zero deviation caused by external zero reference gas on the measurementis avoided, the operation free of zero correction function is realized, and the stability of the measurement is improved.
Owner:SHENZHEN UNIV
Carbon dioxide measuring instrument
PendingCN108354613AReduce volumeReduce manufacturing costSensorsBlood characterising devicesMeasuring instrumentData treatment
The invention discloses a carbon dioxide measuring instrument. The carbon dioxide measuring instrument comprises a shell which defines a sealed carbon dioxide detection space, an air carbon dioxide sensor which is arranged in the carbon dioxide detection space and used for detecting the concentration of carbon dioxide in the carbon dioxide detection space, a data processor which is connected to the air carbon dioxide sensor and used for analyzing and processing the concentration of carbon dioxide to obtain partial pressure of carbon dioxide in the blood, a display screen which is embedded in the shell and connected to the data processor, an elasticity wrist strap which is connected to the shell, a constant temperature heating member which is arranged on the inner side of the shell, and a sealing ring which sleeves the shell. The carbon dioxide measuring instrument has the advantages of being small in size, being wearable in use, being low in price, being non-invasive in detection, andthe like.
Owner:左庆军
Refuse biochemical aerobic treatment device and its control method
InactiveCN1702060ASmall footprintShorten fermentation timeBio-organic fraction processingOrganic fertiliser preparationMeasuring instrumentAir content
An aerobic garbage disposal device setting draught fan beside garbage heap and its control method comprise the following steps: connecting ventilating duct with air outlet of fan; setting air outlet of fan in garbage heap; equipping air content measuring apparatus and temperature measuring apparatus in garbage heap; sending measurement result of measuring instrument into data input pin of controller; control pin of said controller connecting with switch of fan. Said air content measuring apparatus is oxygen measurement set or carbon dioxide measurement set. The invention reduces bad odour from garbage heap, accelerates biochemical aerobic reaction, decreases secondary garbage pollution, increases heating value of garbage, decreases energy consumption of burning plant and decreases cost of garbage disposal system.
Owner:ENVIROSYST BEIJING ENVIRONMENTAL ENG & TECH CO LTD
Capnography with decision support system architecture
ActiveCN108024759AAssess Respiratory HealthDetailed export parametersTracheal tubesMedical devicesMedicineDecision taking
A capnograph device (10) includes a carbon dioxide measurement component (20) and an electronic processor (30) programmed to generate a capnogram (40) comprising carbon dioxide level sample values measured as a function of time. End-tidal carbon dioxide (etC02) is determined from the capnogram, and an etC02 parameter quality index (etC02 PQI) (44) is computed using one or more quantitative capnogram waveform metrics computed from the capnogram. A respiration rate (RR) value is also determined from the capnogram, and a RR PQI (46) computed using the RR value and the etC02 PQI. A respiratory well-being index (RWI) (50) may be computed from the etC02 and RR values and the etC02 and RR PQI values. In some embodiments the one or more capnogram waveform metrics are computed from a capnogram histogram generated from the capnogram.
Owner:KONINKLJIJKE PHILIPS NV
Installation and method for preparing liquid and/or gaseous carbon dioxide
InactiveUS20150033768A1Over filling be preventSimple and efficient configurationVessel mounting detailsGas handling applicationsProcess engineeringLiquid carbon
An installation for preparing liquid and / or gaseous carbon dioxide is described, having a first container which is configured to store liquid carbon dioxide, wherein the first container is in fluid communication with a second container by at least a first pump, wherein said pump is configured for pumping carbon dioxide out of the first container via a first valve into the second container. A measuring apparatus is provided for measuring the mass of the second container, wherein the installation is configured such that the first valve is closed off so that no more carbon dioxide can be supplied to the second container when the mass of the second container measured by the measuring apparatus reaches or exceeds a predefined value. Methods for preparing liquid carbon dioxide are also provided for.
Owner:LINDE AG
Method, device and system for measuring carbon dioxide flux by dynamic box method without flowmeter
Owner:HENGYANG NORMAL UNIV
Simplified display of end tidal co2
ActiveCN108024758BReduce noiseReduce system errorMedical devicesDiagnostic recording/measuringEngineeringMechanics
A capnography device comprising a capnography measurement component (20) configured to measure respiratory carbon dioxide levels and an electronic processor (30) programmed to generate a capnography graph signal (40), and end-tidal carbon dioxide (etCO2) is calculated by performing a sliding window max operation (42, 44) on 2 ) signal (50). In some embodiments, the sliding window maximum operation takes its duration (T W ) is a sliding time window (W) of at least 30 seconds. A smoothing filter may be applied to the capnogram signal prior to performing the sliding window max operation, and / or a smoothing filter may be applied (52) after the sliding window max operation to produce a smoothed etCO 2 signal (54). The capnography device may be a lateral flow capnography device (10) or a mainstream capnography device.
Owner:KONINKLJIJKE PHILIPS NV
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