317results about How to "Realize continuous measurement" patented technology

The invention discloses a laser measurement device for the thickness of a plate, and relates to a laser measurement device. In order to the solve the problems that as for a conventional laser measurement method, continuous measurement for the thickness of the plate can not be carried out, the technical scheme I is adopted as follows: an upper arm and a lower arm are arranged in parallel; the upper arm is connected with a side arm; the lower arm is connected with a lateral wall of a U-shaped slide rail; the side arm is connected with chutes in a sliding manner; a horizontal gear on the side arm is meshed with a gear wheel; an upper and a lower laser displacement sensors are respectively fixed on the upper and the lower arms; a long-arm clamp is fixed on a support which is fixed on one group of rollers; two groups of rollers roll along a guidance groove of a guidance rail; each group of rollers are limited through two limiting mechanisms; the side wall is fixed on a working table; the guidance rail is fixed on an upper installation base of an upper motion platform; an upper bracket of the upper motion platform is fixed on a lower installation base of a lower motion platform; and the lower motion platform is arranged in the working table. The technical scheme II is different from the technical scheme I, the side wall is fixed on the upper installation base of the upper motion platform. Due to the adoption of the device provided by the invention, continuous measurement for the thickness of the plate can be carried out.

The invention provides a method for determining an indicator diagram of electrical parameters of a rod-pumped well and belongs to the technical field of oil production of oil fields. The method aims at achieving convenient and practical measurement of the indicator diagram of the electrical parameters of the rod-pumped well on site. The method is characterized in that top dead center moments and bottom dead center moments are determined periodically, active powers of electrical parameters of up strokes and down strokes of the rod-pumped well are processed in a decomposition mode, and input end active power of the up strokes and the down strokes is obtained respectively and are calculated and converted into wellhead loading force; adjustment is conducted through balance blocks for operation balance of a pumping unit, actually measured data are used for further correcting the weights of the crank balance blocks of the oil pumping unit or retrieving the weights of the crank balance blocks after adjustment, actually measured active power is converted into wellhead loading force F<upper force i>, wellhead loading force F<lower force i> and superposed wellhead loading force F<upper and lower force i>, the wellhead loading force F<upper force i>, the wellhead loading force F<lower force i> and the superposed wellhead loading force F<upper and lower force i> are calculated, superposed and converted into wellhead loading force, and the indicator diagram of trends of the electrical parameters is determined before and after superposition with the crank balance blocks. According to the method, on-site testing is convenient and practical, and online automatic measurement is achieved.

The invention discloses an epidermal-electronics-based health monitoring system, which comprises a sensing unit and a portable signal processing unit, wherein the sensing unit is in an epidermal electronic patch form, is adhered to the skin surface of a monitored object, and is used for acquiring and storing the physiological parameter data of the monitored object; the portable signal processing unit is in signal connection with the sensing unit, and is used for reading and displaying the physiological parameter data stored in the sensing unit, and giving an alarming prompt or calling for assistance when the physiological parameter data exceeds a preset threshold value. The invention also discloses other embodiments of the health monitoring system. According to the epidermal-electronics-based health monitoring system, various problems of a conventional wearable health monitoring system can be successfully solved; the epidermal-electronics-based health monitoring system has the advantages of low cost, convenience for control, real-time monitoring and carrying, high measurement accuracy, multipoint measurement and the like.

The invention relates to an on-line monitoring system of navigation equipment and a method thereof. The monitoring system comprises a test antenna, a GPS antenna, an antenna control module, a radio frequency acquisition and processing module, a signal analysis module and a central controller module. The test antenna is used for obtaining instrument landing system ILS/VHF Omnidirectional Range VOR spatial signals. The GPS antenna is used for receiving satellite signals. The antenna control module transmits signals received by the test antenna and the GPS antenna to the radio frequency acquisition and processing module. The radio frequency acquisition and processing module carries out filtering, demodulation and calculation on the received signals to obtain relevant parameter data and transmits the relevant parameter data to the signal analysis module. The signal analysis module analyzes the received data and transmits analysis results to the central controller module. According to the invention, accurate position measuring points of navigation channels can be determined, and measuring precision and accuracy of the on-line monitoring system of the navigation equipment are enhanced.

The invention relates to a high frequency image acquisition system for measuring a flow rate, and belongs to the technical field of water conservancy measurement. The system comprises a high speed camera, a lens, a continuous laser and a combination lens, and is characterized in that: the high speed camera is provided with a 50mm large-caliber lens adaptor; the lens has an F1.0/50mm large-caliberaperture; the continuous laser is a low-power continuous laser with the maximum power of 2-5W; and the combination lens can convert light beams emitted by the laser into 1mm-thickness rectangular plane light. The system can acquire images economically and safely at high frequency and high quality so as to continuously measure the flow rate of an open channel or a pipeline.

The invention provides a system for soil compactness measurement and automatic adjustment of finely prepared land. The system includes a soil compactness measurement mechanism, a compression depth automatic adjustment mechanism and a controller; the soil compactness measurement mechanism includes vertical pulling pressure transducers, horizontal pulling pressure transducers and monitoring wheels;the compression depth automatic adjustment mechanism includes a transverse girder, an electric cylinder and a compression roller; the controller collects the acting force performed by the soil on themonitoring wheels in the horizontal and vertical directions and measured by the pressure transducers, and obtains the soil compactness after fine soil preparation online according to a created relationship model of force performed on the monitoring wheels, the compression depth and the soil compactness; the controller feeds back and adjusts the compression depth of the compression roller in real time according to the relationship between the compression depth and the soil compactness to make the soil compactness maintain within a set target value range, and the soil compactness can meet agricultural technological requirements of planting of different crops. The system can effectively prevent differentiation of the soil compactness due to unreasonable compression depth, improve the operation quality of fine soil preparation machines and the adaptability of the fine soil preparation machines to different soil environments.

The invention discloses a system and a method for carrying out well logging by utilizing a transient electromagnetic simulation signal; the system comprises three parts, i.e., a ground acquisition unit, a downhole measurement unit and a cable, wherein a ground power supply module in the ground acquisition unit is used for providing direct current (DC) or alternating current (AC) to a downhole circuit power supply in the downhole measurement unit as well as a ground synchronous processing module, a ground high-precision AD conversion circuit and a ground display storage module; the downhole circuit power supply is used for providing the current to a downhole transient electromagnetic excitation power supply for supplying power (large current) and providing the current to a downhole electronic circuit for supplying power (small current); a downhole transient electromagnetic excitation main power supply is used for providing the current to a power module. According to the system and the method, the resistivity of stratum outside a casing is obtained by continuously measuring the response of a transient electromagnetic field in a cased well, and a stratum resistivity curve needed by evaluation of remaining oil is obtained; the system and the method are not affected by contact, and are easy in construction and high in working efficiency.

The invention provides an automatic testing device for a contact resistor made of an electrical contact material and relates to a testing device for the contact resistor made of the electrical contact material. The invention solves the problem of the absence of the testing device for the contact resistor made of the electrical contact material which is capable of automatically controlling a contact pressure and supporting multi-contact continuous measurement. Longitudinal and horizontal sliding tables are both arranged on an upper surface of a machine base; the longitudinal sliding table is connected with the horizontal sliding table through a horizontal and longitudinal sliding table connector; a vertical sliding table is fixedly arranged at the upper end of the horizontal and longitudinal sliding table connector; a pressure sensor is fixedly arranged on the vertical sliding table; the two ends of a pressure sensor connector are respectively connected with an elastic element and the pressure sensor; a probe is assembled on a probe clamp connector through a probe clamp; a multi-contact clamp is fixedly arranged on the upper surface of the longitudinal sliding table; and a to-be-tested contact is fixedly arranged on the multi-contact clamp. The automatic testing device realizes the automatic control on a contact force of a contact and the continuous measurement for a multi-contact contact resistor and has the advantages of measuring accuracy, convenience in operation and high efficiency.

The invention discloses a liquid level measurement device and method and relates to liquid level measurement. The device is provided with a light source, a three-port circulator, a spectrograph, a liquid container to be measured and a liquid level sensor. The sensor is inserted into the liquid container to be measured, the other end of the sensor is connected with a first output port of the circulator, the light source is connected with the input end of the circulator, and a second output port of the circulator is connected with the spectrograph; signal light enters the circulator and then is output through the first output port of the circulator; after the signal light reaches the sensor, interference occurs at the position of a fiber bragg grating through reflection of a silver film; reflected light re-enters the circulator through the first output port of the circulator and then is output to the spectrograph through the second output port of the circulator, and the spectrum of the output light can be obtained by measuring the spectrum of the reflected light; the relation between the height of the outside liquid level and the wavelength of interference fringes can be obtained by measuring the drifting of the wavelength of the interference fringes through the spectrograph, and liquid level height can be measured through spectrum analysis. By the adoption of the liquid level measurement device and method, continuous liquid level measurement is realized, measurement accuracy is high, and safety performance is high.

The invention discloses an organic compound for preparing wide pH fluorescence probes. The organic compound is capable of carrying out combination at any ratio according to the actual requirements and being fixed on a hydrophilic polymer to further detect the pH value of a water environment. According to the organic compound, continuous measurement on the pH value can be achieved; and the efficiency, the sensitivity and the repeatability are greatly improved.

The present invention relates to a system and method of continuously tracking and measuring the geometrical parameters of an overhead line system. The system comprises a dolly body capable of walking along a steel rail, and a measuring device and an industrial computer which are arranged on the dolly body. The measuring device is installed on the dolly body via a rotary motor and comprises an industrial camera and a laser range finder, the optical axis direction of the industrial camera and the laser emergent direction of the laser range finder are arranged parallelly, the industrial camera real-timely shoots the images of the overhead line systems above the rail and sends to the industrial computer, and the industrial computer obtains the position deviation of the emergent laser of the current laser range finder and the overhead line system, utilizes the position deviation to generate a driving signal to send to the rotary motor, and controls the rotary motor to drive the measuring device to act, so that the emergent laser of the laser range finder always irradiates to the detected overhead line system during the walking process of the dolly body, and then the laser range finder obtains the geometrical parameters of the overhead line system directly.

The invention discloses a system for measuring position of a marine seismic streamer based on one-way hydroacoustic ranging and belongs to the technical field of marine seismic survey. The system comprises a ship-borne system of a marine seismic survey ship, water surface units, underwater units, a dada cable and a power supply cable. The system adopts the position data of any three water surface units, the vertical position data of an underwater unit to be measured and the distances between the three water surface units and the underwater unit to be measured to calculate the position data of the underwater unit to be measured; and the system uses the position data of the underwater units to obtain the positions of points of the marine seismic streamer by interpolation calculation. The system adopts the one-way hydroacoustic ranging, namely, the water surface units are only provided with acoustic wave launchers and the underwater units are only provided with acoustic wave receivers, thus increasing the operating range of the hydroacoustic ranging and reducing the interference of the acoustic wave launchers in a hydrophone group; and by adopting ranging acoustic wave signals of characteristic spectra, the recognition method of the ranging acoustic wave signals by the underwater units is simplified, and the system complexity is reduced.

The present invention provides a method for measuring blood pressure, the method comprising: obtaining a pulse waveform of an measured object, and extracting a plurality of characteristic points from the pulse waveform according to a preset rule; selecting and loading a best blood pressure measurement model group from a model library according to a physiological index of the measured object; and operating the best blood pressure measurement model group to obtain blood pressure parameters of the measured object by calculating according to the plurality of characteristic points. Correspondingly, the present invention further provides an embedded device that may implement the above method for measuring blood pressure. The present invention can, according to measured objects of different types, correspondingly select the best blood pressure measurement model group that is suitable for the measured object, so as to obtain the blood pressure parameters that are more precise.

The invention discloses a device for testing the rigidity of a plate spring in a high-temperature environment. The current testing method is poor in testing precision, cockamamie in process and poor in universality as the current testing method is carried out after a spiral spring high-temperature testing device is transformed according to the structure and the shape of the plate spring. The device comprises a clamping device used for clamping the plate spring, a force testing device used for testing plate spring bearing loads, a lifting device used for regulating the position of the force testing device, a deflection measuring device used for measuring the deformation amount of the plate spring, a regulating device used for regulating the positions of stress action points of the plate spring, and an electromagnetic induction heating device used for stimulating the working temperature of the plate spring. With the adoption of the device for testing the rigidity of the plate spring in the high-temperature environment, the continuous measurement on different deflections and different stress action points can be realized; and the device is convenient to operate and reliable in test.

The invention discloses a geosynthetic material tensile sample global strain field measuring device and method. The device comprises a high-definition camera, a to-be-tested sample, a computer and a data acquisition and analysis system. The high-definition camera is connected with the computer and the data acquisition and analysis system through data lines, a marking grid is arranged on the surface of the to-be-tested sample, and a lens of the high-definition camera is over against the marking grid on the surface of the to-be-tested sample. The measurement efficiency is remarkably improved, the adaptability is high, and the measurement method is simple and efficient.

The invention discloses a micro-particle weighing sensor of a V-shaped folding cantilever beam structure, belonging to the field of a precise particle mass detection sensor. A micro mass sensor comprises a fixed block, a V-shaped folding cantilever beam structure and a piezoelectric thin film, and is characterized in that the upper surface of the V-shaped folding cantilever beam connected to the fixed block is connected with the piezoelectric thin film, wherein the top or tops of a single or a plurality of V-shaped folding grooves which are arranged along the axis is or are used as a main detection point or main detection points; and the mass of a detected object is accurately calculated through data output of the piezoelectric thin film. The rigidity and the effective mass distribution state of the sensor are effectively changed through introduction of the V-shaped folding cantilever beam, so that the detection sensitivity of the sensor is greatly improved. Specific examples show that the sensitivity can be improved by 227 percent compared with the conventional sensor of the rectangular section cantilever beam structure. The micro mass sensor has the characteristics of simple structure, accuracy in positioning of the detected object, high sensitivity and the like, so that the sensor can be widely applied to detection of atoms, fine particles, environmental dust and microbial cells such as bacteria or viruses.

The invention discloses a magnetoelectric loop wire test method for continuously applying a scanning magnetic field and a device thereof and relates to a performance test method of a magnetoelectric material and a test device thereof. The device is provided with an electromagnet, a direct current power source, a teslameter, a Helmholtz coil, a phase-locked amplifier, a function signal generator, a shield and a computer. The magnetoelectric loop wire test method comprises the following steps: connecting a sample with the input end of the phase-locked amplifier, setting the frequency of the function signal generator and a time function of the phase-locked amplifier and starting signal processing software; controlling the electromagnet to output the scanning magnetic filed and applying the scanning magnetic field on the sample; continuously acquiring the amplitude and the phase of magnetoelectric voltage as well as a magnetic field intensity value of the scanning magnetic field by the computer; carrying out signal processing on the acquired amplitude and phase and automatically setting signs of the amplitude to obtain the magnetoelectric voltage by the computer according to the rule that the magnetoelectric voltage is positive when the phase is less than or equal to zero and is negative when the phase is more than zero; and automatically producing a magnetoelectric loop in real time and saving experimental data by taking the magnetic field intensity value of the scanning magnetic field as an X axle and the magnetoelectric voltage as a Y axle through the computer.