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38results about How to "Fast measurement response" patented technology
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Grain moisture online detection circuit
InactiveCN106908483AFast measurement responseHigh precisionProgramme controlComputer controlMachine controlControl system
The invention discloses a grain moisture online detection circuit. The grain moisture online detection circuit comprise a power supply circuit, a constant-current source circuit, a single-chip microcomputer system, a signal amplification circuit, a Nixie tube display circuit, a motor anddrying machine control system, a control knob, a key circuit and a temperature compensation circuit, wherein the signal amplification circuit, the Nixie tube display circuit, the motor and drying machine control system, the control knob, the key circuit and the temperature compensation circuit are connected with the single-chip microcomputer system through data lines, the power supply circuit is connected with the other circuits, the constant-current source circuit is formed by connecting a voltage stabilizing circuit and a constant-current source measuring circuit, and the output end of the constant-current source circuit is connected with the signal amplification circuit. The grain moisture online detection circuit has the advantages that the measuring response speed is high, precision can be as high as + / -0.5%, manpower source waste can be reduced, the production cost is reduced, measuring results are accurate and the practicality is high.
Owner:WUHAN UNIV OF TECH
System and method for quantitatively estimating HIFU (High Intensity Focused Ultrasound) damage viscoelasticity through pulsed acoustic radiation force shear waves monitored by laser Doppler
ActiveCN108732240ASimple structureVibration real-time monitoringUltrasonic/sonic/infrasonic diagnosticsAnalysing solids using sonic/ultrasonic/infrasonic wavesUltrasonic radiationData acquisition
The invention discloses a system and a method for quantitatively estimating HIFU (High Intensity Focused Ultrasound) damage viscoelasticity through pulsed acoustic radiation force shear waves monitored by a laser Doppler. According to the system, a synchronizing signal control system is connected with an arbitrary waveform generator and a high-speed data acquisition card, and the arbitrary waveform generator is connected with a high intensity focused ultrasound transducer by virtue of a power amplifier and an impendence-matching network; the high intensity focused ultrasound transducer is arranged outside a water tank, and detected imitated body tissues are arranged inside the water tank and connected with one three-dimensional movement device; laser Doppler equipment is arranged outside the water tank and connected with another three-dimensional movement device; and the output end of the laser Doppler equipment is connected with a PC (Personal Computer) via the high-speed data acquisition card. According to the system disclosed by the invention, single pulse acts on the imitated body tissues, so that ultrasonic action time and ultrasonic radiation dose can be effectively reduced;the acoustic radiation force shear waves are tracked by utilizing laser Doppler, the wave velocity and attenuation coefficient of the shear waves are obtained by using a 2D-FT algorithm, the shearingmodulus of elasticity and shear viscosity coefficient are further analyzed, and the defects of the conventional SDUV (Shearwave Dispersion Ultrasound Vibrometry) method are overcome.
Owner:XI AN JIAOTONG UNIV
Capacitor voltage conversion circuit
ActiveCN108020727ATake up less resourcesReduce mistakesCapacitance measurementsConverting sensor output electrically/magneticallyCapacitor voltageTime-sharing
The present invention provides a capacitor voltage conversion circuit. The capacitor voltage conversion circuit comprises CPU unit, a square-wave excitation signal generation circuit, a detected capacitor (C), a synchronous digital detecting circuit, a time-sharing integrating circuit and a low-pass RC filter circuit. The CPU unit is configured to generate synchronous excitation signals and logiccontrol signals; the square-wave excitation signal generation circuit is configured to take the synchronous excitation signals as triggering signals to convert a reference level as square-wave excitation signal output configured to be applied to the detected capacitor (C) to excite the detected capacitor (C); the synchronous digital detecting circuit is connected with a returning end of the detected capacitor (C) to take the synchronous excitation signals as triggering signals to detect returning signals of the detected capacitor (C) to integration half-wave signals; and the time-sharing integrating circuit is configured to take the synchronous excitation signals as triggering signals to perform time sharing integration of the integration half-wave signals to output a direct current level.The capacitor voltage conversion circuit solves the technical problems that the capacitor voltage conversion circuit is complex in structure, limited in application range, large in error and low in detection sensitivity.
Owner:四川泛华航空仪表电器有限公司
Non-contact molten pool temperature measuring system and method for powder laying type laser additive manufacturing
InactiveCN111174915AQuick measurementFast measurement responseRadiation pyrometryTest responseChemistry
The invention discloses a non-contact molten pool temperature measuring system and method for powder laying type laser additive manufacturing, and belongs to the technical field of powder laying typeadditive manufacturing. A reflector, a filter lens and the like are designed in an existing laser powder laying type additive manufacturing light path system, an infrared thermometer is adopted for capturing infrared light beams, transmitted to the light path system, of heat radiation light beams, and measurement of a temperature of a molten pool is achieved. Accuracy of the optical path system ina testing process and relative position accuracy of the infrared thermometer in an optical path have an important influence on the accuracy of a testing temperature. By utilizing the test method andsystem designed in the invention, temperature change characteristics of the molten pool can be rapidly tested in a non-contact manner, and a test response speed is high.
Owner:SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
Device and method for measuring multi-longitudinal mode laser resonant cavity FSR by large-amplitude laser self-mixing vibration signals
The invention relates to the technical field of laser devices, in particular to a device and method for measuring a multi-longitudinal mode laser resonant cavity FSR by large-amplitude laser self-mixing vibration signals. The device comprises a multi-longitudinal mode laser device, a vibrating target, a transmission mechanism, a motor, a signal generator, a beam splitter, a photoelectric detector,a signal preprocessing unit and a signal processing unit, the multi-longitudinal mode laser device emits laser to the vibrating target, by the signal generator, the motor and the transmission mechanism, the vibrating target linearly moves in a reciprocating manner, while linearly moving in a reciprocating manner, the vibrating target receives laser emitted from the multi-longitudinal mode laser device and feeds back the laser into a resonant cavity of the multi-longitudinal mode laser device to form the laser self-mixing vibration signals, the beam splitter splits the self-mixing signals to the photoelectric detector, and the output end of the photoelectric detector is successively connected with the signal preprocessing unit and the signal processing unit. Non-contact real-time high-precision measurement can be realized, the measurement device is simple in structure, measurement response speed is high, and measurement precision is also high.
Owner:ANHUI UNIVERSITY
Vehicle height measurement system and method
InactiveCN106918287AFast frame rateFast response to altitude measurementUsing optical meansLaser lightOptoelectronics
The invention discloses a vehicle height measurement system and method. The system comprises a portal frame (4). The vehicle height measurement system also comprises a laser light screen (3), a diffuse reflection target (5), a shooting assembly (6) and an information processing unit. The laser light screen (3) and the diffuse reflection target (5) are arranged to vertical rods at the two sides of the portal frame (4) respectively. The laser light screen (3) is used for emitting a line of laser beams to the height measurement diffuse reflection target (5), and thus a line of laser spots are formed on the diffuse reflection target (5); the shooting assembly is used for recording laser spots on the diffuse reflection target (5) under two conditions that a vehicle passes through the portal frame or no vehicle passes through the portal frame respectively; and the information processing unit is used for calculating the height of the passing vehicle according to the stored laser spot data obtained when no vehicle passes through the portal frame and the laser spot data obtained when the vehicle passes through the portal frame.
Owner:BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
Dual-sensitization high-sensitivity FBG temperature sensor and manufacturing method thereof
ActiveCN113125041AImprove response speedGood sensitization effectThermometers using physical/chemical changesEpoxyThermal dilatation
The invention provides a double-sensitization high-sensitivity FBG temperature sensor and a manufacturing method thereof, and the sensor comprises three cylindrical metal tubes, one of the cylindrical metal tubes is a metal housing, the inner diameter of the cylindrical metal tube is slightly larger than the outer diameters of the other two metal tubes, and the middle part of the cylindrical metal tube is provided with a plurality of through holes. Two small metal tubes are connected through epoxy resin glue and embedded into a large metal shell by a certain depth, so that a section of cavity exists in the metal shell, four through holes are formed in the cavity of the metal shell, and the fiber bragg grating is installed in the three metal tubes which are connected in series through glue in a bonding mode. The grating is coated with colloid with a high thermal expansion coefficient; and the high thermal expansion characteristic of the organic polymer on the outer side of the FBG and the influence of thermal expansion and contraction of the metal on the central wavelength are utilized to realize dual temperature sensitization of the FBG, and the response speed and the sensitization effect of the FBG temperature sensor are improved.
Owner:WUHAN UNIV OF TECH
Time response compensation method of heat distributed gas mass flow meter
InactiveCN107063370AShort response timeFast measurement responseMass flow measurement devicesEngineeringRecursion
The invention discloses a time response compensation method of a heat distributed gas mass flow meter. The time response compensation method includes: measuring a measured value increment at i moment on the basis of an original measured value; calculating a compensation of a steady state response value by adoption of a kalman filtering algorithm; recursion-calculating an average value of the steady state response values acquired by multiple original measured values before the i moment; eliminating an abnormal value from the acquired data queue; and using the average value of the previous moment and the next moment to replace the abnormal value, and rapidly responding to obtain a final measurement result. Without adding additional hardware, the method can greatly shorten the response time of the heat distributed gas mass flow meter; the experiment confirms that the response time can be shorted by 90%; the measurement response speed of the heat distributed gas mass flow meter can be effectively improved, and the dynamic measurement character of the heat distributed gas mass flow meter can be remarkably enhanced.
Owner:MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
Gas measuring method and device thereof
ActiveCN101285769BHigh measurement accuracyHigh measurement sensitivityColor/spectral properties measurementsMeasurement deviceOptical noise
The invention relates to a gas measurement method and a gas measurement device, which are mainly used for detecting gas parameters. The device comprises an analysis unit and a laser, a sensor, a convergent component and an optical reflector which are arranged inside a supporting device, wherein, the sensor is connected with the analysis unit. The measurement method is as follows: the laser gives out laser to the convergent component which is obliquely arranged; the laser is converged by the convergent component, passes through gas to be measured and then is emitted to the optical reflector; after the laser is reflected by the reflector, the laser passes through the gas to be measured and the convergent component again and is then received by the sensor; and the sensor transmits received signals to the analysis unit, and the parameters of the gas to be measured are obtained through analysis of the analysis unit. The gas measurement method and the gas measurement device have the advantages of advanced method, reasonable and skillful light path design, low optical noise, small number of parts, high measuring precision, convenient assembly and stable and reliable operation.
Owner:FOCUSED PHOTONICS
Sensor circuit for detecting thickness of sunscreen
InactiveCN109900213AEliminate disturbing effectsFast measurement responseUsing optical meansElectricityUltraviolet
The invention discloses a sensor circuit for detecting the thickness of a sunscreen. The sensor circuit comprises a UV generation and control circuit, a UV photoelectric detection and control circuit,a micro current amplifying circuit, a microprocessor and an auxiliary circuit; the UV generation and control circuit is electrically connected with the microprocessor and is controlled by the microprocessor; the UV photoelectric detection and control circuit is electrically connected with the micro current amplifying circuit; the micro current amplifying circuit is electrically connected with themicroprocessor; the auxiliary circuit is electrically connected with the microprocessor so as to provide power for the whole circuit; and an optical filter is connected with the UV generation and control circuit and the UV photoelectric detection and control circuit. With the sensor circuit of the invention adopted, measurement is performed on portions requiring sunscreen application when a useruses the sunscreen, so that whether the sunscreen is applied to the portions can be detected, and the thickness of the applied sunscreen can be detected, and therefore, the user can use the sunscreento avoid being burnt by ultraviolet rays.
Owner:上海智觅智能科技有限公司
Microorganism electrode method BOD tacheometer temperature-control device and the tacheometer
ActiveCN101165481AKeep aliveHeating evenlyTemperatue controlMicrobiological testing/measurementMicroorganismTemperature control
The invention comprises a temperature control cavity mounted in the rapid determination meter. It features the following: said temperature control cavity uses the heated air to control the temperature in the control cavity. The invention also provides a BOD rapid determination meter comprising a case, and both microbial electrode and the temperature controller mounted in the case.
Owner:BEIJING CHINAINVENT INSTR TECH +1
Pulse-based multi-node gating monitoring system
ActiveCN104793539AEfficient measurementHigh measurement accuracyProgramme controlComputer controlAviationMeasurement device
The invention discloses a pulse-based multi-node gating monitoring system. The pulse-based multi-node gating monitoring system comprises a measuring device which is composed of an industrial computer, a digital I / O (input / output) card and a digital acquisition card, one end of a first cable is connected with a board card interface of the measuring device, the other end of the first cable is connected with a second aviation plug of a master unit control box, one second of a second cable is connected with a first aviation plug of the master unit control box, the other end of the second cable is connected with third aviation plugs of a plurality of slave unit control boxes, one ends of third cables are connected with 24-pin interfaces of the slave unit control boxes respectively, and the other ends of the third cables are connected with a plurality of devices to be monitored. The pulse-based multi-node gating monitoring system has the advantages that rotating speed and vibration parameters of a rotating machine can be measured effectively and precisely, the measuring precision for the rotating speed can reach to + / - 0.1Hz, and the measuring precision for the vibration parameters can reach to + / -1 micrometer; high anti-jamming capability is achieved, jamming can be resisted effectively by the aid of a metal shell, and the rotating speed and the vibration parameters can be measured accurately even in the severely-jammed site environment ; the pulse-based multi-node gating monitoring system is high in measuring response speed, instantaneity, economy and expansion capability.
Owner:RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
A Grain Moisture Online Detection Circuit
InactiveCN106908483BFast measurement responseHigh precisionProgramme controlComputer controlMicrocomputer systemHemt circuits
The invention discloses a grain moisture online detection circuit. The grain moisture online detection circuit comprise a power supply circuit, a constant-current source circuit, a single-chip microcomputer system, a signal amplification circuit, a Nixie tube display circuit, a motor anddrying machine control system, a control knob, a key circuit and a temperature compensation circuit, wherein the signal amplification circuit, the Nixie tube display circuit, the motor and drying machine control system, the control knob, the key circuit and the temperature compensation circuit are connected with the single-chip microcomputer system through data lines, the power supply circuit is connected with the other circuits, the constant-current source circuit is formed by connecting a voltage stabilizing circuit and a constant-current source measuring circuit, and the output end of the constant-current source circuit is connected with the signal amplification circuit. The grain moisture online detection circuit has the advantages that the measuring response speed is high, precision can be as high as + / -0.5%, manpower source waste can be reduced, the production cost is reduced, measuring results are accurate and the practicality is high.
Owner:WUHAN UNIV OF TECH
Temperature control device for BOD (Biochemical Oxygen Demand) tachymeter adopting microorganism electrode method
ActiveCN102385401BKeep aliveHeating evenlyMaterial analysis by electric/magnetic meansTemperature control using electric meansTemperature controlEngineering
Owner:BEIJING CHINAINVENT INSTR TECH
Three-dimensional coordinate acceleration measuring circuit
InactiveCN102944697AFast measurement responseGet acceleration data quickly and synchronouslyAcceleration measurement using interia forcesAcceleration measurement in multiple dimensionsMicrocontrollerClassical mechanics
The invention discloses a three-dimensional coordinate acceleration measuring circuit, which comprises an X-axis acceleration measuring circuit Ax, a Y-axis acceleration measuring circuit Ay, a Z-axis acceleration measuring circuit Az, and a data processing MCU (microcontroller unit). The three-dimensional coordinate acceleration measuring circuit has the advantages that the measuring response is high, the acceleration data in each direction can be quickly and synchronously obtained, the reference is effectively and quickly provided for the judgment of a mechanical diagnosis system, and the occurrence possibility of mechanical fatigue faults is reduced.
Owner:KUNSHAN BEIJI PHOTOELECTRON SCI & TECH
A device and method for measuring the FSR of a multi-longitudinal-mode laser resonator by using a large-amplitude laser self-mixing vibration signal
The invention relates to the technical field of laser devices, in particular to a device and method for measuring a multi-longitudinal mode laser resonant cavity FSR by large-amplitude laser self-mixing vibration signals. The device comprises a multi-longitudinal mode laser device, a vibrating target, a transmission mechanism, a motor, a signal generator, a beam splitter, a photoelectric detector,a signal preprocessing unit and a signal processing unit, the multi-longitudinal mode laser device emits laser to the vibrating target, by the signal generator, the motor and the transmission mechanism, the vibrating target linearly moves in a reciprocating manner, while linearly moving in a reciprocating manner, the vibrating target receives laser emitted from the multi-longitudinal mode laser device and feeds back the laser into a resonant cavity of the multi-longitudinal mode laser device to form the laser self-mixing vibration signals, the beam splitter splits the self-mixing signals to the photoelectric detector, and the output end of the photoelectric detector is successively connected with the signal preprocessing unit and the signal processing unit. Non-contact real-time high-precision measurement can be realized, the measurement device is simple in structure, measurement response speed is high, and measurement precision is also high.
Owner:ANHUI UNIVERSITY
Electrical control device and hydraulic control device in runway surface friction coefficient testing car
InactiveCN101630154BImprove stabilityImprove securityProgramme control in sequence/logic controllersObservational errorThermal energy storage
The invention discloses an electrical control device and a hydraulic control device in a runway surface friction coefficient testing car, relating to an automatic controller system, wherein the electrical control device comprises an upper computer, a lower computer, a relay, a power supply, a printer, an amplification conditioning module, a sensor, a signal converting circuit, an auto speed pulsesignal exit side and a braking signal exit side; wherein the upper computer is an industrial control computer the lower computer is a PLC computer, and the sensor comprises a horizontal force sensor,a vertical force sensor and a water pressure sensor. The hydraulic control device uses a hydraulic cylinder two-way connecting vessel and is composed of a hydraulic pump station, a three-position four-way electromagnetic directional valve, a pressure testing adapter, a hydraulic energy storage, a hydraulic cylinder, an electromagnetic directional ball valve, a hydraulic lock, a valve block and a travel switch, wherein the hydraulic cylinder is a two-way connecting vessel and consists of a rodless cavity, a rod cavity, a piston and a piston rod in the hydraulic cylinder. The invention greatly increases the measurement response speed, the control ability and the data processing ability and obviously reduces measurement errors.
Owner:HEBEI UNIV OF TECH
Pulse-based multi-node gating monitoring system
ActiveCN104793539BEfficient measurementHigh measurement accuracyProgramme controlComputer controlAviationMeasurement device
Owner:RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
A Time Response Compensation Method for Thermal Distributed Gas Mass Flowmeter
InactiveCN107063370BShort response timeFast measurement responseMass flow measurement devicesTime responseEngineering
The invention discloses a time response compensation method of a heat distributed gas mass flow meter. The time response compensation method includes: measuring a measured value increment at i moment on the basis of an original measured value; calculating a compensation of a steady state response value by adoption of a kalman filtering algorithm; recursion-calculating an average value of the steady state response values acquired by multiple original measured values before the i moment; eliminating an abnormal value from the acquired data queue; and using the average value of the previous moment and the next moment to replace the abnormal value, and rapidly responding to obtain a final measurement result. Without adding additional hardware, the method can greatly shorten the response time of the heat distributed gas mass flow meter; the experiment confirms that the response time can be shorted by 90%; the measurement response speed of the heat distributed gas mass flow meter can be effectively improved, and the dynamic measurement character of the heat distributed gas mass flow meter can be remarkably enhanced.
Owner:MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
Fully integrated infrared gas sensor and its working method
ActiveCN107328730BReduced measurement response timeFast measurement responseMaterial analysis by optical meansElectricityOptical cavity
The invention discloses a fully-integrated infrared gas sensor and a working method thereof, which comprises a piezoelectric micropump layer, a porous layer, an optical cavity layer, a circuit layer, an infrared light source, an optical filter and an infrared sensing element, wherein the circuit layer is used for outputting a periodic voltage sequential control signal to the piezoelectric micropump layer so as to control the rising or pressing action of the piezoelectric micropump layer; when the piezoelectric micropump layer is pressed down and completely covers the pores in the porous layer, the circuit layer is also used for outputting a control signal to the infrared light source so that the infrared light source can emit infrared light; the optical filter is used for filtering infrared light of infrared characteristic absorption wave band of non-to-be-detected gas; the infrared sensing element is used for converting the infrared light, filtered by the optical filter and absorbed by to-be-detected gas, into an electrical signal, and the circuit layer is also used for calculating the converted electrical signal so as to obtain the concentration value of the to-be-detected gas. The invention further provides a working method of the infrared gas sensor.
Owner:CETC CHIPS TECH GRP CO LTD
Remote inclination angle measurement system and method based on 5G mobile communication
PendingCN112857317AReal time monitoringReduce manpower requirementsTransmission systemsIncline measurementEngineeringComputer science
The invention provides a remote inclination angle measurement system and method based on 5G mobile communication. The system comprises an angle measurement module, a 5G communication module and a power supply module. The angle measurement module is used for measuring a plane inclination angle and a rotation axis. The 5G communication module is used for sending a measurement result of the angle measurement module to a cloud server through a 5G mobile communication network and receiving a control instruction. The power supply module is used for supplying power to the angle measurement module and the 5G communication module. According to the invention, the plane rotation axis and the rotation angle can be measured, the installation difficulty is reduced, the angle measurement result can be remotely monitored in real time by using the 5G mobile communication network, the time delay is greatly reduced, and the anti-interference capability is enhanced.
Owner:SHANGHAI UNIV
Protective sleeve for thermoelectric couple of converter
InactiveCN107641296AAvoid shockScientific and reasonable compositionPolyethylene glycolMechanical property
The invention discloses a protective sleeve for a thermoelectric couple of a converter. The protective sleeve is prepared from the following raw materials in parts by weight: 55 to 65 parts of a mainmaterial, 1 to 3 parts of a cross-linking agent, 0.2 to 0.4 part of a calcium-zinc stabilizer, 1 to 2.5 parts of a toughening agent, 10 to 20 parts of a purple clay compound, 5 to 12 parts of calcinedkaolin, 2 to 6 parts of glass fiber, 2 to 7 parts of talcum powder, 4 to 10 parts of expanded perlite, 2 to 8 parts of heavy calcium carbonate, 1 to 2 parts of polycaprolactam, 1 to 2 parts of polyethylene glycol 1200 and 1 to 2 parts of a coloring agent. The protective sleeve disclosed by the invention has the advantages of excellent mechanical properties, relatively low cost, stable quality andhigh surface glossiness; the impact, caused by flue gas particles, on a measurement end of the thermoelectric couple can be effectively prevented, and the service life is prolonged; meanwhile, the protective sleeve has extremely good thermal stability, more rapid measurement response and more accurate temperature measurement.
Owner:ANHUI LAND GRP
Nuclear-free metering automatic control system for balanced sugarcane feeding squeezing
ActiveCN105182892ALow application costSimple and efficient operationWeighing apparatus for continuous material flowProgramme control in sequence/logic controllersAutomatic controlWaste recovery
The invention discloses a nuclear-free metering automatic control system for balanced sugarcane feeding squeezing. With an optical wave measurement technology, the sugarcane feeding squeezing amount can be measured and controlled based on combination with the PLC and computer control technology. The system is composed of a laser ranging module, an electric control module, a PLC control module and a man-machine interface monitoring module and is based on a novel application technology using the optical wave measurement technology to replace a nuclear source so as to realize squeezing conveying metering. Compared with the nuclear source technology, the application cost is reduced, the operation becomes simple and convenient, nuclear leakage and loss can be avoided; management measures including nuclear supervision and nuclear waste recovery and the like can be effectively reduced, and the internal management of the enterprise can be optimized. The nuclear-free sugarcane feeding, squeezing, and conveying measurement technology having characteristics of high intelligent level, environment protection, and high efficiency can replace the nuclear source metering system that is employed by the sugar refinery currently comprehensively and thus has the broad market prospects.
Owner:广西绿地球能源科技有限公司
A method, device and system for determining a common working area of an engine
ActiveCN102879200BAccurate torqueFast measurement responseEngine testingNitrogen oxideAutomotive engineering
The invention discloses a method for determine a common working area of an engine, which is used for obtaining the common working area of the engine quickly and accurately. The method includes the following steps: collecting the discharge capacity of nitrogen oxides and corrected parameters at different rotational speed and under different torque conditions of the engine during the rack testing of the engine; storing the corresponding relation between the rotational speed, the torque and the corrected parameters of the engine and the discharge capacity of nitrogen oxides of the engine; collecting the actual rotational speed, the actual discharge capacity of nitrogen oxides and the actual corrected parameters of the engine during the actual operation of a vehicle; then inquiring the corresponding relation between the rotational speed, the torque and the corrected parameters of the engine and the discharge capacity of nitrogen oxides of the engine to obtain the actual torque of the engine during the actual operation of the vehicle; and determining the common working area of the engine as per the actual rotational speed and the actual torque of the engine. The invention further discloses a system and a device for determining the common working area of the engine.
Owner:WEICHAI POWER CO LTD
Light-sensitive type intelligent body shape circumference tape
InactiveCN110353337AEasy and accurate measurementIngenious structureClothes making applicancesBody shapeReturn-to-zero
The invention discloses a light-sensitive type intelligent body shape circumference tape. The light-sensitive type intelligent body shape circumference tape comprises a tape belt roller, a tape belt,a light inductor, a control circuit module and a conductive magnetic column; the control circuit module comprises a light-sensitive measurement circuit and a compensation measurement circuit; the light inductor comprises a light emitting unit and a light-sensitive unit; a column of light-sensitive holes are arranged in the tape belt; the light-sensitive holes include reset light-sensitive holes and measurement light-sensitive holes; the reset light-sensitive holes are used for returning to zero returningand resetting; the light inductor is connected to the positive and negative poles of the light-sensitive measurement circuit through circuits; the length is measured through the light-sensitive measurement circuit; a tape belt magnetic suction head is arranged on the free end of the tape belt; the tape belt magnetic suction head can be adsorbed on apositive conducting magnet and anegative conducting magnet of the conductive magnetic column; therefore, the compensation measurement circuit is conducted; and the error when circumference measurement is carried out can be compensated.
Owner:超体密码科技(广州)有限公司
Precision self-correction method and system for aircraft panel manufacturing
ActiveCN112344868BIncrease stiffnessCorrect Manufacturing AccuracyUsing optical meansTotal factory controlMachining vibrationsControl engineering
The present application provides a precision self-correction method and system for aircraft panel manufacturing. The precision self-correction method includes: arranging a visual measurement system according to the process information of the aircraft panel; during the workpiece manufacturing process, using the visual measurement system for real-time monitoring to acquire measurement data; and combining the acquired measurement data with the workpiece The theoretical data is compared to obtain the real-time error; according to the real-time error, the process parameters of the flexible tooling or manufacturing equipment are adjusted. The precision self-correction method uses the method of visual measurement of the depth of field data to monitor the deformation, the measurement range is large, and the measurement response is fast; the deformation data is fed back to the flexible tooling, and the flexibility of the flexible tooling is fully utilized to improve the rigidity of thin-walled parts and reduce machining vibration. , thereby correcting the manufacturing accuracy.
Owner:杨海成
Automatic control system of seedless metering for balanced sugarcane pressing
ActiveCN105182892BReduce management measuresConvenient for internal managementWeighing apparatus for continuous material flowProgramme control in sequence/logic controllersLaser rangingInternal management
The invention discloses a nuclear-free metering automatic control system for balanced sugarcane feeding squeezing. With an optical wave measurement technology, the sugarcane feeding squeezing amount can be measured and controlled based on combination with the PLC and computer control technology. The system is composed of a laser ranging module, an electric control module, a PLC control module and a man-machine interface monitoring module and is based on a novel application technology using the optical wave measurement technology to replace a nuclear source so as to realize squeezing conveying metering. Compared with the nuclear source technology, the application cost is reduced, the operation becomes simple and convenient, nuclear leakage and loss can be avoided; management measures including nuclear supervision and nuclear waste recovery and the like can be effectively reduced, and the internal management of the enterprise can be optimized. The nuclear-free sugarcane feeding, squeezing, and conveying measurement technology having characteristics of high intelligent level, environment protection, and high efficiency can replace the nuclear source metering system that is employed by the sugar refinery currently comprehensively and thus has the broad market prospects.
Owner:广西绿地球能源科技有限公司
Corrosion resistance thermocouple used for measuring smoke
ActiveCN103278255AImprove protectionReduce usageThermometer detailsThermometers using electric/magnetic elementsEngineeringThermocouple
The invention relates to a corrosion resistance thermocouple used for measuring smoke, comprising a junction box, a temperature measuring core body, a leakage blocking device and a protective sleeve, wherein the protecting sleeve is fixedly arranged on the lower end of the junction box through the leakage blocking device; the temperature measuring core body is fixedly arranged on the lower end of the junction box in the protective sleeve; the middle of the protective sleeve is connected to the middle of a blowing pipe through a communicating pipe; an inert gas inlet is formed at one end of the blowing pipe; and a ventage is formed in the lower end of the protective pipe. The corrosion resistance thermocouple is simple in structure, scientific and reasonable in design, simple in manufacturing, lower in cost, rapid in temperature measuring speed and good in impingement attack resistant effect, and the service life of the thermocouple is prolonged.
Owner:TIANJINSHI ZHONGHUAN TEMPERATURE METERS
A kind of t-type ultra-fine thermocouple manufacturing process
ActiveCN106124075BSolve technical gaps that cannot be processedFast measurement responseThermometers using electric/magnetic elementsUsing electrical meansProcess engineeringCurrent technology
Owner:安徽科联电气科技有限公司
Microorganism electrode method BOD tacheometer
ActiveCN101165481BKeep aliveHeating evenlyMicrobiological testing/measurementTemperatue controlMicroorganismTemperature control
The invention comprises a temperature control cavity mounted in the rapid determination meter. It features the following: said temperature control cavity uses the heated air to control the temperature in the control cavity. The invention also provides a BOD rapid determination meter comprising a case, and both microbial electrode and the temperature controller mounted in the case.
Owner:BEIJING CHINAINVENT INSTR TECH +1
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