72 results about "Measurement device" patented technology

A portable alveolar gas measurement device and method of determining at least one alveolar gas level are disclosed. The device includes a structure that receives a sample portion of breath, and a gas sensor in communication with the structure that detects a gas level of a gas within the sample portion and provides a first signal indicative of the level. The device further includes circuitry coupled at least indirectly to the gas sensor, where the circuitry receives at least one of the first signal and a second signal related to the first signal, and where the circuitry provides at least some assistance in determining whether a portion of information provided by the at least one signal is used as an indication of an alveolar gas level. Additionally, the device includes an output device coupled to the circuitry that provides an output indicative of the first alveolar gas level.

A volume or fluid level sensing system as taught by the present invention comprises a flexible bladder, a solenoidal coil, a means for volume or fluid level measurement, and a user interface. Means for volume or fluid level measurement are preferentially means for inductance measurement which may be selected from the set including timing inductive measurement means, AC voltage divider inductive measurement means, resonance inductive measurement means. A user interface may be selected from the set including a digital display, a data interface, a voltage level display device, or a current level display device. The solenoidal coil may be embedded in the flexible bladder or in a flexible sock encompassing the flexible bladder. In addition, a bladder volume or fluid level indicating method as taught by the present invention comprises the steps of inductance measurement, volume or fluid level inference, and volume or fluid level reporting.

The invention relates to a method, a system and a device for measuring and calculating the external insulation pollution degree of an electric transmission and transformation device, wherein a spot pollutant accumulation measuring device automatically measures the electrical conductivity of pollutants by utilizing a conduction electrode on the surface of a simulation shed, data is transmitted into a central server for measuring and calculating the pollution degree and is converted into the equivalent salt density, the accumulation amount of external insulation pollutants before and after each rainfall can be measured immediately, and the accumulation amount on the external insulation surface pollutants at a measuring site is predicted according to the pollutant accumulation velocity so as to early warn the pollution flashover risk of the device.

The invention relates to the technical field of fluid measurement, and provides a flow rate measuring system and a flow rate measuring method for multi-phase fluid. The system comprises a measurement module, a signal amplification module, a data processing module and a terminal module which are connected in turn, wherein the measurement module at least comprises two measurement devices arranged on a pipeline at a certain interval, and the two measurement devices respectively measure the content of the same element passing the sections where the devices are positioned by a nuclear physics method; the signal amplification module is respectively connected with the two measurement devices and amplifies signals acquired by measurement; and the data processing module converts the signals into digital signals first, then performs digital lowpass filtering treatment and quantization treatment on the digital signals, establishes a mathematical model by utilizing a cross-correlation function principle, performs data analysis treatment on the digital signals, and outputs results of a flow and a flow rate to the terminal module. The system and the method reduce the measuring complexity, reduce corresponding errors caused and improve measuring accuracy and reliability.

A blood pressure information measurement device includes light emitting elements and light receiving elements as a plurality of pairs of first and second sensors in a cuff. While the cuff pressure is increased, combinations of the plurality of pairs of the light emitting elements and the light receiving elements are switched, and volume pulse waves are obtained from each of the combinations. After increasing the cuff pressure, for each of the volume pulse waves corresponding to the combinations, a specific volume value at a point where the amount of volume change becomes maximal is extracted. Thereafter, based on values corresponding to the maximum and minimum blood pressure and the specific volume value, the sensors for measurement are determined.

The invention discloses a neutral point direct current online measurement device for a transformer, which comprises a Hall sensor, a copper bar, a transmission fiber, a signal processing module arranged in a box body, a photoelectric power conversion module, a measurement signal photoelectric conversion module and a power laser launching circuit module, wherein the copper bar penetrates through the two sides of the box body; the copper bar in the box body is sleeved with the Hall sensor; the signal processing module is used for receiving an output signal of the Hall sensor, converting the output signal into an optical signal and outputting the optical signal into the measurement signal photoelectric conversion module; the measurement signal photoelectric conversion module is used for converting the inputted optical signal into an electrical signal to output; the photoelectric power conversion module is used for providing power for the Hal sensor and the signal processing module; and the power laser launching circuit module is used for inputting medium power laser for the photoelectric power conversion module. The neutral point direct current online measurement device adopts the optical fiber to supply the energy and transmit the signals, blocks an over-voltage transmission path and improves the measurement stability and the accuracy.

The invention discloses a binocular distance measurement device and method, and an accelerator radiotherapy system comprising the same. The binocular distance measurement device is composed of two optical sensors, a calibration processing module, and a distance measurement module. The two optical sensors are used for carrying out digital image collection on a measured object. The calibration processing module is used for carrying out binocular stereo calibration and coordinate system calibration to obtain a calibration result. The distance measurement module carries out distortion correction processing on a collected original digital image based on the calibration result obtained by the calibration processing module and acquires a real-time distance between a radioactive source and a target by combining a Kalman prediction algorithm, a template matching algorithm, and an angular point extraction algorithm. According to the invention, because of combination of the Kalman prediction algorithm, the template matching algorithm, and the angular point extraction algorithm based on the binocular distance measurement system, the calculation precision is improved substantially and the processing speed of the algorithm is increased; and a real-time processing effect is realized in actual hospital treatment.

A measuring apparatus (10), in particular for measuring current, is provided, having a sensor (40) and an evaluation device (42) which is coupled or can be coupled thereto, in which said coupling is effected contactlessly, in particular by means of a transponder interface (44, 46), so that on the one hand current can be measured in a reaction-free manner, wherein on the other hand the resulting measuring apparatus (10) can be used in a particularly flexible and versatile manner on account of the manoeuvrability of the components with respect to one another and on account of the relatively large possible distance between the two parts of the transponder interface (44, 46).

A washing machine is provided that includes measuring a load in a washer with a motor, the method comprising: a) accelerating a load in the washer b) providing a first input voltage and running the motor until a first speed of the motor is stable; c) providing a second input voltage, d) starting a timer, upon providing the second input voltage, and obtaining a first time measurement; e) operating the motor until the load speed responds to the second input voltage to the motor and is stable; f) stopping the timer and obtaining a second time measurement; g) calculating a time differential between the first time measurement and the second time measurement; and h) determining the load size using a load size equation and the time differential.

The invention relates to the technical field of mine support, and provides an operating condition simulation method and operating condition simulation test bench for an anchor bolt support system. Theoperating condition simulation method for the anchor bolt support system comprises: simulating the surrounding rock of a roadway by a model in order that the shape of the free surface of the model isconsistent with the shape of the surface of the surrounding rock before deformation, wherein the surrounding rock of the roadway is the surrounding rock where one of a roof, a floor and a laneway islocated; mounting an anchor bolt and a bolt surface protecting member on the free surface of the model in comparison with a downhole roadway, and mounting a measuring device corresponding to the boltsurface protecting member; measuring the surface deformation of the surrounding rock of the downhole roadway; applying pressure to the surfaces, other than the free surface, of the model in order thatthe deformation amount of the free surface coincides with the surface deformation amount of the surrounding rock of the roadway; and acquiring the stress and/or deformation of the bolt surface protecting member by the measuring device. The operating condition simulation method for the anchor bolt support system can provide a theoretical basis for the research of an anchor bolt support theory andthe anchor bolt support design under complex stress conditions.

The invention belongs to the technical field of optical fiber measurement, and particularly relates to a common-path forward-reverse simultaneous measuring device for a fiber optic gyroscope ring. The common-path forward-reverse simultaneous measuring device for the fiber optic gyroscope ring comprises a light source device, a testing device 11, an optical path correlator 12, and a photoelectric signal conversion and signal recording device 13, wherein the optical path correlator 12 consists of a first six-port coupler 121, a second six-port coupler 122, a first collimating lens 123, a second collimating lens 124 and a scanning table 125. By adopting the common-path forward-reverse simultaneous measuring device, the testing time of a fiber optic gyroscope ring polarization coupling measuring device is shortened, the measurement efficiency is improved, the influences of environmental factors such as temperature are eliminated, and the polarization coupling symmetry of the fiber optic gyroscope ring can be obtained accurately.

The invention discloses a device and a method for measuring the concentration of <222>Rn and <220>Rn synchronously by adopting electrostatic collection and solid nuclear track. The measurement device consists of a box body, a third filter, a first aluminum diaphragm, a first solid nuclear track detector, a first filter, a second solid nuclear track detector, a second aluminum diaphragm, a second filter, a high-voltage module, a battery, a base plate and a frame-shaped seal ring. In measurement, the high-voltage module in the measurement device is started up, so that high-voltage electrostatic fields are formed between the inner surface of a first measurement cavity of the measurement device and the surface of the first solid nuclear track detector as well as between the inner surface of a second measurement cavity and the surface of the second solid nuclear track detector respectively, and then the measurement device is placed in a measurement environment to measure the concentration of <222>Rn and <220>Rn in air, and the measurement time is T. After the measurement process, the first solid nuclear track detector and the second solid nuclear track detector are taken off, and are subjected to chemical etching, and the concentration of <222>Rn and <220>Rn in the environment is obtained by calculation.

The invention discloses a novel transformer station secondary cable alignment device. The device comprises a detected end and a detection end which are respectively arranged at two ends of a to-be-detected secondary cable, and a voltage measurement device used for measuring a voltage of the two ends of the secondary cable, wherein the detected end is provided with a power source, a switch K1, N wiring ends and N+1 wiring resistors connected in series between the power source and the switch, and the N wiring ends are respectively connected with wiring nodes of any two adjacent wiring resistors. The device is advantaged in that through setting alignment terminals, the wiring resistors are arranged among the alignment terminals, all the wiring resistors are connected in series with a certain voltage, a voltage of any two points of each wiring terminal can be determined, so a voltage difference table can be made, through voltage measurement of the other end of the to-be-detected secondary cable, determination of corresponding labels can be carried out through a table query method, cable alignment can be accomplished, the device is integrally convenient and rapid, and low cost and high precision are realized.

The invention provides an automatic verification method and a system of a coal mill inlet air quantity measuring apparatus, and is applied to inlet air quantity measuring apparatuses of a power station boiler pulverizing system. The automatic verification method of the coal mill inlet air quantity measuring apparatus includes: an air quantity calibration instruction is received, according to the air quantity calibration instruction, a coal mill outlet fast-closing door, a hot primary air adjusting door, a cold primary air adjusting door, and an inlet isolation door are opened, and a coal mine ventilation channel is established; in the condition of different air quantities, the air temperature, the air speed, and the air pressure in each coal-conveying pipeline are measured, and the air quantity in each coal-conveying pipeline is calculated according to the air temperature, the air speed, and the air pressure; according to the sealing air quantity, the coal mill inlet air quantity, and the air quantity in each coal-conveying pipeline, coal mill inlet air quantity verification coefficients in different conditions are calculated; the deviation of the inlet air quantity verification coefficients in different air quantity conditions and the average inlet air quantity verification coefficient is calculated; and whether the work state of the inlet air quantity measuring apparatus satisfies the predetermined condition is determined according to the deviation.

The present invention provides a three-dimensional calibrating measurement device for neutron diffraction stress analysis. The three-dimensional calibrating measurement device can move with multi-degree of freedom by utilizing a three-dimensional scanner matched with a sample table firstly; scanning images of samples on the sample table are collected into a computer for building a three-dimensional model of each sample; sub-net treatment is performed on each three-dimensional model, and each net grid is allocated with a unique identification; any target net grid is selected from the three-dimensional model in a manual or automatic mode, the movement of the sample table is controlled by a movement control program set in the computer, so as to enable an entrance slit to be aligned to the corresponding target net grid, at the same time, each diffraction slit, a corresponding collimator and a corresponding neutron detector move to corresponding positions, a neutron source emits a neutron beam, and neutron diffraction stress measurement is started. The three-dimensional calibrating measurement device can be used for achieving precise three-dimensional calibrating on the samples, is low in space requirement, and free of additional installation of datum mark light sources, avoids introduction of additional errors, and can reach the position accuracy up to 100 mu m for detected samples.

Method for determining the position coordinates (X_M, YM, ZM) of a target object (11) in a measurement range (12) in at least two dimensions (X, Y, Z), with the steps: a target device (13) with a reflector element (31) is positioned at the target object (11), a laser beam (46) is transmitted from a transmitting element (41) of a laser distance measurement device (14) onto the target device (13), at least a part of the laser beam (46) is partially reflected on the reflector element (31), a camera device (15) records an image of the target device (13) with the at least partially reflected laser beam as a light reflection, the focus of the light reflection in the image of the target device (13) is determined, a receiver element in the laser distance measuring device (14) receives the laser beam partially reflected on the reflector element (31) as the received beam, a distance to the target object (11) is calculated from the received beam, a first offset is calculated from a focal length of the camera device (15), the calculated distance to the target object (11) and a first image coordinate of the focus of the light reflection, the position coordinates (XM, YM, ZM) of the target object (11) are calculated from the distance and the first offset.

The invention discloses a bladder volume measuring method and instrument. The bladder volume measuring method comprises the steps that S1, ultrasonic signals are transmitted in a plurality of directions of the bladder; S2, two reflection signals, reflected by bladder walls on two sides of the corresponding direction, of the ultrasonic signals in each direction are received; S3, the depth of the bladder in the direction is determined according to the time difference of the two reflection signals in each direction; S4, the bladder volume is determined according to the bladder depths in multipledirections. The propagation time of ultrasonic waves in the bladder is measured, and ultrasonic imaging is not needed, so that a measuring device is simplified, and the operation efficiency of the device is improved. In clinical application, results are quicker to obtain, and the efficiency of measuring the bladder volume is improved.

The invention discloses a wide-range inductive frequency-modulation type displacement measurement device and a method. The device comprises a shell, a spiral coil, a measuring rod, a pipe body and a data processing module, wherein the spiral coil is arranged on the rear section of the pipe body in a sleeving manner; the data processing module is arranged on the shell; the front-end part of the measuring rod is formed by butting n sections of magnetic cores and can stretch into the pipe body; the magnetic conductivity of the ith magnetic core is 1.5-2 times that of the magnetic conductivity of the (i+1)th section of the magnetic core; i and n refer to integers; n is more than or equal to 2; i is equal to n-1; the length of each section of the magnetic core is smaller than the length of the spiral coil, so that two ends of a single section of the magnetic core stretch in the length range of the spiral coil; and the lengths of the tube body and the measuring rod are larger than the length of the spiral coil. The metal spiral coil with mature and stable process is used, the mode of continuously measuring by virtue of the multi-section measuring rod is adopted, the precision is guaranteed, the range can be widened, and the device is low in cost and easy to implement and can be widely applied to wide-range displacement deformation monitoring in the fields of civil engineering, geological disasters and industries.

The invention relates to a forest dead combustible moisture online measuring device and a measuring method thereof. The device comprises a mounting bracket; a half-transparent and half-reflecting mirror is arranged in the middle of the mounting bracket; a laser is arranged at the right side of the half-transparent and half-reflecting mirror in an inclined way; along a light source transmission path, the light emitted by the laser is projected onto a standard Lambert plate after passing through the half-transparent and half-reflecting mirror by means of transmission, and is then projected onto a photodetector I by means of reflection of the standard Lambert plate; along a light source reflection path, a light source emitted by the laser is projected onto a dead combustible container after passing through the half-transparent and half-reflecting mirror, and is then projected onto a photodetector II by means of reflection of the dead combustible container; the photodetector I and the photodetector II are also separately connected with a set of data processing device. The forest dead combustible moisture online measuring device can be used for substituting manual work in the open air for performing real-time monitoring for 24h; the online measuring device adopts an LORA wireless technology, can be used for postback data from a long distance with low energy consumption, and also can ensure the integrity of the data in a transmission process.

The invention discloses a method for dynamically measuring the rigidity of a silicon balance spring and rotational inertia of a balance wheel and a measurement device. The method comprises the following steps of A, adjusting a measurement state to a vibration state similar to the work of a watch and be close to the working frequency of the watch; B, dynamically measuring the vibration periods TB and TY of a balance wheel and balance spring vibration system; C, calculating the rotational inertia of the balance wheel to be measured and the rigidity of the balance spring to be measured, wherein the rotational inertia JB of a standard balance wheel in a swing body and the rigidity MB of a standard balance spring in the swing body are known; in FORMULA (1) and FORMULA (2), wherein M represents the rigidity of the silicon balance spring to be measured, and J represents the rotational inertia of the balance wheel to be measured. The method has the beneficial effects that the balance wheel and balance spring vibration system consisting of the balance spring and the swing body executes measurement under the condition of same working condition, so that the influence, which is caused by nonlinear errors, on the measurement is eliminated, the measurement speed is high, and the precision is high; the method belongs to a dynamic measurement method. Furthermore, the rigidity of the balance spring and the rotational inertia of the balance wheel can be measured through an instrument by only replacing the swing body.

The invention discloses an energy-saving type electric vehicle charging station. The energy-saving type electric vehicle charging station comprises a master controller, a wind power generator set, a solar power generation device, a diesel engine generator set, a drive, a storage battery set, an AC/DC converter, a DC/DC converter, a voltage measurement device, a fault detection device, a control switch K1, a control switch K2, a control switch K3, a control switch K4, an intelligent power distribution device, a timing switch and a charging device. According to the energy-saving type electric vehicle charging station, wind power and solar power are comprehensively utilized for generating electricity, the electricity generation amount is increased, and the good energy-saving effect is played; an energy storage device is adopted, electric energy can be stored in the non-electric-peak period and released in the electric peak period, and the impact of the charging station to a power grid when electricity is used in the electric peak period is avoided; when a fault of the power grid occurs, automatic emergency power supply is performed by the diesel engine generator set, and the normal and stable operation of the charging station is guaranteed.

The invention relates to a cutting tool angle measuring instrument comprising a rough adjusting pedestal, and a precise measuring apparatus and a cutting tool fixing apparatus arranged above the rough adjusting pedestal. The precise measuring apparatus has a structure that: a positioning seat is arranged on the upper surface of the rough adjusting pedestal; a meter seat is arranged in the hollow cavity of the positioning seat; a horizontal threaded rough hole is arranged in the middle of the meter seat; a lead-screw is coupled with the thread of the meter seat; two ends of the lead-screw are positioned on the positioning seat; one end of the lead-screw is connected with a feeding handle; a meter rack is arranged on the upper surface of the meter seat; a dial indicator I is vertically arranged on an end of the meter rack; the top point of the dial indicator I contacts the surface of a cutting tool requiring measuring; an adjusting rod is connected to a side of the meter seat; an end face of the adjusting rod extends out of the positioning seat, and contacts a top point of a dial indicator II horizontally arranged on the upper surface of the rough adjusting pedestal. The cutting tool angle measuring instrument is advantaged in simple structure and convenient operation. With the instrument, the geometrical angle of the cutting tool can be rapidly and accurately measured.