296results about How to "Automate your measurements" patented technology

The invention discloses an automatic measuring method for digitalized airplane assembly. The method includes the steps of determining the transforming relationship between all coordinate systems and an assembly coordinate system through measurement preparatory work, transforming theoretical coordinate values of all detection points under the airplane coordinate system to the assembly coordinate system to obtain theoretical coordinate values of all the detection points under the assembly coordinate system, and conducting automatic searching with the theoretical coordinate values of the detection points under the assembly coordinate system as initial light pointing points of a laser scanner to obtain actual coordinate values of all the detection points under the assembly coordinate system. Through the automatic measuring method, digitalized measurement of airplane components is achieved, the problems that the size of airplane space is large, the detection points to be measured are wide in distribution area, manual light guiding at a part of detection points is difficult, and the detection points need to be measured repeatedly in the assembly process are solved, one-off manual installation of a reflector is achieved, multiple automated measurement is achieved, manpower is saved, the measurement time is shortened, and the measurement efficiency and the assembly efficiency are greatly improved.

The invention discloses a semiconductor laser radar visibility meter which comprises a laser emission system, a receiving optical system, and a signal collecting and control system, and is characterized in that: the laser emission system comprises a semiconductor laser, a coupling lens, a first coupling optical fiber, a transmitter-telescope, and a flat mirror with reflection and transmission functions; the receiving optical system comprises a receiving telescope, a second coupling optical fiber, a photodetector, and an amplifier; the signal collecting and control system comprises an AD collecting card, a computer and a door control system; and the AD collecting card is connected with the computer by a stacked way. The visibility meter has small and convenient structure, strong applicability and simple operation, can measure horizontal and slant visibility data in real time, and provides reliable visibility information for the fields of meteorology, transportation, environmental protection and military and the like.

The invention relates to a distance calibration and measurement method and system based on image shoot. The method comprises the following steps of: pre-obtaining a corresponding relationship between a position coordinate in an image shot by a camera device and a position coordinate of a real area to be measured through calibration; shooting process images of moving of a target object in the real area to be measured; extracting a start frame and an end frame of moving of the target object from the shot process images; and obtaining the position coordinate of the target object in the start frame and the end frame, respectively calculating the position coordinates of the corresponding real areas to be measured based on the obtained corresponding relationship based on the calibration, and calculating the moving distance based on the position coordinates of the both real areas to be measured. According to the method and the system, the automation measurement for distance based on a vision technology is realized. The operation is simple, and the accuracy of a measuring result is high.

The invention discloses a multiple stumpage breast height diameter passive measurement method based on a depth extraction model. The multiple stumpage breast height diameter passive measurement methodbased on the depth extraction model comprises the following steps: step 1, calibrating a mobile phone camera, and obtaining camera internal parameters and an image resolution; step 2, establishing adepth extraction model (which is as shown in the specification); step 3, collecting and processing an image of a stumpage to be measured, and calculating a stumpage depth value in a photogrammetric coordinate system; and step 4, measuring multiple stumpage breast height diameter values in a single image (the formula is shown in the specification). The multiple stumpage breast height diameter passive measurement method based on the monocular vision and the depth extraction model disclosed by the invention can be applied to cameras with different parameters such as field of view, focal length, image resolution and the like, which improves range accuracy and measurement efficiency, and provides a support to forestry resource surveys and forestry resource management.

The invention relates to a method for automatically detecting and evaluating the color of a piece of laser beam emitting paper and the quality of laser beams. The method comprises the following steps: putting and fixing a piece of laser beam emitting paper to be detected on a measuring platform by adopting an automatic detection system; setting the number of measuring points and the measuring step length of a color measuring instrument in the horizontal and vertical directions on the measuring platform; controlling the displacing, positioning and measuring of the color measuring instrument in the horizontal and vertical directions automatically, and reading the color information of the measured sample in different positions; analyzing and calculating the chromatic value by using a computer to obtain the CIELAB or CIEDE2000 color difference of the measured sample in different measuring positions; drawing a color difference distribution diagram, and detecting the color uniformity and rainbow cycle of the single laser beam emitting paper and the quality of laser beams according to the periodic distribution rule and the peak distribution rule of the color difference distribution diagram. By adopting the method provided by the invention, the problems of measurement value uncertainty and human error can be solved, and automatic detection can be realized. The method is easy and convenient to operate and can be used for measuring normatively with a small error.

The invention relates to a measurement apparatus of center position accuracy of all journals of a crank shaft, and measurement and calibration methods thereof. The measurement apparatus comprises a measurement apparatus pedestal, two crank shaft journal supports, five main shaft journal measurement racks, four eccentric shaft journal measurement racks, and corresponding laser displacement sensors. The crank shaft is arranged on the crank shaft journal supports, so that all journals of the crank shaft are located above the main shaft journal measurement racks or eccentric shaft journal measurement racks. On the basis of the structure, the two laser displacement sensors on the two planes of the main shaft journal measurement racks or the eccentric shaft journal measurement racks obtain coordinates of two laser spots on the main shaft journal surface or eccentric shaft journal surface; on the premise that diameters of all journals of the crank shaft are known and deviation from circular form is ignored, journal center position coordinates of all journals relative to the corresponding measurement racks are obtained; the center coordinates of all journals are converted under a measurement apparatus pedestal coordinate system in a unified mode, so that center position accuracy information of all journals of the crank shaft is obtained. Source tracking is carried out on all coordinate systems of the measurement apparatus by using a standard crank shaft to complete calibration. The measurement becomes rapid; and full detection of batches of crank shafts can be carried out conveniently.

The invention relates to an urban railway transit rail to earth transition resistance testing system and method. A conventional urban railway transit rail to earth transition resistance testing system cannot meet requirement of on-site tests for low power and high precision. The urban railway transit rail to earth transition resistance testing system comprises a testing system host machine and a far end data collection and transmission device that are connected with each other for information interaction; the testing system host machine comprises a programmable control low power current source, an automatic control module, a digital type high precision voltage measurement and storage module I, a wireless communication module I, a data processing module and a man-machine interaction module; the far end data collection and transmission device comprises a device automatic control submodule, a digital high precision voltage measurement and storage module II and a wireless communication module II. The portable programmable low power current source is adopted in the urban railway transit rail to earth transition resistance testing system, testing operation can be performed conveniently, data of a plurality of testing points is synchronously transmitted and processed, rail to earth transition resistance is calculated via a compensation algorithm, and urban railway transit rail to earth transition resistance can be measured in a high precision manner.

The invention provides an automatic contact instrument used for measuring thin sheet material dimensions. The automatic contact instrument comprises a measuring head, a control system comprising a numerical control and calculation module, and a shaft system moving along a three-dimensional coordinate, wherein the measuring head comprises a guide rail die and a guide core, the guide core penetrates through the guide rail die, the guide rail die has an air inlet and an air guide groove, an air guide rail is formed in the guide rail die, a top portion of the guide rail is provided with the air inlet, a bottom portion of the guide rail is connected with a spring, the spring is arranged between the guide core and a bottom board, a lower end of the spring is connected with a probe, a top portion of the guide core is connected with a raster ruler, the raster ruler is connected with a laser displacement sensor, and the laser displacement sensor is connected with the control system. The measuring head of the measuring instrument employs the pneumatic control technology, precise adjustment on a measuring force can be realized through changing internal and external air pressure of the guide core, a value of the measuring force can be not only adjusted, but also the measuring force is guaranteed to be constant; a three-dimensional motion platform is employed in combination with the numerical control technology, all-round and automatic measurement is realized, and thereby measurement precision of surface dimensions of thin sheet material type elements can be improved.

The invention provides a device for measuring the rapid temperature rise of motor drive systems of electric automobiles and a measuring method thereof. The device comprises a high-voltage circuitbreaker used for breaking the connection of any quarter phase circuit between a motor and a motor controller; discharge resistance connected between any quarter phase circuit of the motor, which is provided with the high-voltage circuitbreaker to eliminate a winding residual voltage of the motor; a constant current DC source arranged between any quarter phase circuit of the motor, which is provided with the high-voltage circuitbreaker to provide constant current to the motor winding; a discharge switch used for connecting a discharge circuit; a measuring switch arranged in the circuit of the constant current DC source and used for connecting the loop of any quarter phase circuit of the constant current DC source and the motor. The device is based on the DC constant current source method and realizes automation measurement of the internal resistance of a milliohm-level motor winding. The resolution ratio can reach 0.1 milliohm, and the operation is safe and convenient.

The invention provides a measuring mechanism for the pressure assembling of the main reducers of automobiles, which comprises a friction torque tester for the bearing seat of a main gear assembly and an upper bearing inner ring pressure-assembling mechanism, and is characterized in that the bearing seat friction torque tester takes a servo motor as a drive. The friction torque of a main gear assembly to be measured is transmitted in sequence through the rotation of the bearing seat to a drive fork, a drive disc, a synchronous belt wheel II, a synchronous belt wheel I and a torque sensor, thereby the torque necessary for rotating the bearing seat of the main gear is transmitted to a rotary torque sensor, and a frequency signal is formed; by data acquisition treatment, real-time torque of the bearing seat can be obtained. The invention is for detecting the friction torque of the main gear assembly while pressure assembling the inner ring of the upper bearing of the main gear assembly of the main reducer of an automobile, and realizes automatic measurement of small torque. Measuring the friction torque of the main gear assembly can check whether the selection of the shim in previous station is correct, and effectively improve the quality and efficiency in assembling the main reducers of drive axles of automobiles.

The invention provides a high precision angle measurement system and method for a spacecraft. The high precision angle measurement system comprises an alignment measurement subsystem and a mechanical servo subsystem, wherein the mechanical servo subsystem comprises a spacecraft parking frame and the like; the alignment measurement subsystem comprises a first benchmark theodolite and the like; in a using process, a spacecraft body is statically put on the spacecraft parking frame; the first benchmark theodolite and a second benchmark theodolite are fixedly arranged on a benchmark locating support; an alignment theodolite is fixed on a vertical motion support and moves up and down along the vertical motion support; and the whole vertical motion support is mounted on an annular rotating table, the annular rotating table realizes rotation in the azimuth of 0-360 degrees, and motion of the whole mechanical servo system can form a cylindrical space at one height. The high precision angle measurement system provided by the invention adopts a CCD photoelectric auto-collimator for replacing the traditional optical theodolite telescope system, so that the accuracy and stability of measured data are improved, and the high precision angle measurement system has an automatic reading function.

The invention relates to an automatic insulator salt density online detection device which comprises a sampling insulator, a cleaning arm mechanism arranged inside a machine box, an opening and closing type sealing cover and a salt density measuring instrument. The sampling insulator is suspended on a power device, due to the fact that the working condition of the sampling insulator is the same as that of a running insulator, the filthy state of the sampling insulator can be represented by the sampling insulator, and when the device is not used, the sampling insulator can be suspended outside the machine box of the salt density online detection device, and the cleaning arm mechanism is sealed in the opening and closing type sealing cover. When measuring is required, the sampling insulator ascends to enter the machine box, the cleaning arm mechanism is moved out of the opening and closing type sealing cover, automatic cleaning working is carried out on the sampling insulator, cleaning soiling solutions are collected, and the salt density measuring instrument can measure the salt density numerical value. The automatic insulator salt density online detection device is convenient to use, high in automation degree and suitable for all-weather automatic measuring on the salt density of the insulator, accurately reflects the dirt deposition state of the insulator, and provides data support for the safety running of a power grid.

The invention relates to a skin effect-based sample surface coating nondestructive test method and system. The method comprises acting two ends of a sample to be detected through a frequency-variable AC signal, gradually increasing AC signal frequency, detecting resistance or voltage at the two ends of the sample to be detected, wherein the resistance or voltage is corresponding to AC signals with different frequencies, drawing a resistance-frequency curve or a voltage-frequency curve of the sample to be detected, analyzing a rule of change of the resistance change amounts of the sample to be detected or the voltage change amounts of two ends of the sample to be detected along with frequency change, and carrying out calculation or comparison with a standard sample to obtain thickness of the coating on the sample to be detected. The method and system realize integral measurement of the sample to be detected, has high detection sensitivity, realizes automatic measurement and has high detection efficiency. Through the skin effect, the surface defects of the material at high frequency are sensitive to a high frequency signal. Through change of AC signal frequency, coating surface defect and crack depth distribution information is acquired.

The invention provides an apparatus for measuring the wall thickness of a circular housing. The apparatus comprises a pedestal, a rotary bench which is used for bearing a housing to be measured and is rotatable about self central axis, a post which is arranged on the pedestal and configured to be rotatably connected the pedestal at a first position, and an angle adjusting mechanism which is configured to adjust the angle of the column relative to the pedestal. One end of the angle adjusting mechanism is connected to the post, and the other end is connected to the pedestal at a second position. A first measuring arm and a second measuring arm, which can move along the longitudinal directions of the post, are arranged on the post, are equal in length and are provided with two range finding modules. An indirect measuring method is employed for measuring wall thickness. The apparatus allows automatic measuring the wall thickness of circular housings, the measuring accuracy and measuring efficiency are higher, and measuring blind areas are effectively minimized.

The invention provides a cold plate flow resistance testing system, and aims to provide a flow resistance testing system which is high in automation degree and testing accuracy. The technical scheme includes that a three-loop environmental control liquid separation parallel flow path is serially connected between a double-loop installation circulation circuit for a cold plate to be tested and a cold liquid circulation circuit, a differential pressure sensor (1) is communicated with a common connection point of a return liquid storage box (19) and a bypass adjusting valve (18) through a circulation pipeline to form a cold plate flow resistance testing circulation circuit, a circulation pump (17) is electrically connected with a control computer (22) through a variable frequency control unit (20), the bypass adjusting valve (18) is electrically connected with the control computer (22) through a bypass adjusting valve control unit (21), the control computer selects different set step lengths through control interfaces and interface cards of corresponding hardware according to measuring ranges and measuring step lengths set by Labview software, differential pressure values of flow points and resistance values of corresponding sub-points within a flow range are automatically measured, and resistance characteristic curves of test objects are automatically outputted.

The invention discloses a physical constitution detection method, which comprises the following steps: 1, continuously shooting testee images at a fixed frame rate by virtue of a camera, and extracting human body postures in the images; 2, analyzing the human body postures extracted from each frame of image according to a time sequence, finding a frame of image in which the human body posture is a detected posture, and marking the frame as an initial frame; 3, continuing performing backward searching to the frame of image at an interval of a preset frame number with the initial frame according to the time sequence by taking the initial frame as the first frame, and marking the frame as an ending frame; 4, counting all the frames from the initial frame to the ending frame, calculating duration from the initial frame to the ending frame in combination with the total frame number and the fixed frame rate, simultaneously obtaining the motion displacement of a testee according to human body posture and position changes from the initial frame to the ending frame, and calculating the physical constitution data of the testee according to the motion displacement. The invention further discloses a corresponding physical constitution detection system. According to the method and the system, vertical jumping items during physical constitution detection can be automatically measured, and the measurement accuracy is high.

The invention provides a measuring device and a measuring method for stitching interference of a planar sub-aperture. The measuring device comprises an interferometer, an interferometer splicing displacement table, an interferometer inclination adjusting platform, a measured member splicing displacement platform, a measured member inclination adjusting platform, a measured member, a supporting platform and a control system. The measuring device and the measuring method have advantages of high sub-aperture positioning precision, high measurement precision and full automatic measurement.

The invention discloses an automatic measuring device for a sheet camber, belonging to the curvature measuring field. The device comprises a measuring bench used for placing a steel plate to be measured; belts controlled by a stepping motor are parallelly arranged at the edge of one end of the measuring bench; the belts drive a height gage to move, and a probe of the height gage can move along the edge of the steel plate to be measured; the height gage is connected with a programmable logic controller (PLC) module, and the data obtained by the height gage by measurement can be stored in the PLC module. The measuring device improves the measurement efficiency of the sheet camber, and the measurement speed can reach 2 minutes per coil. The measuring device is connected with a display, and a resulting value and a curvature curve can be drawn and displayed on the display at any time in the measurement, thus leading the measuring result to be intuitive and distinct; production conditions and various parameters can also be pertinently adjusted in time according to the curvature curve drawn by the PLC in the production of the steel plate so as to direct the actual production.

The invention discloses an electromagnetic environment automated testing device for an aviational radio navigation station and an electromagnetic environment automated testing method for the aviational radio navigation station. An antenna group consists of a plurality of antennas from the first to the Nth antennas which are respectively connected with input ports from the first to the Nth input ports of an antenna switch. The input ports from the first to the Nth input ports of the antenna switch are connected with the antenna switch respectively. The antenna switch, an antenna switch output port, a filter input port, a filter, a filter output port, a signal input port of a spectrum analyzer, a spectrum analyzer, a GPIB (General Purpose Interface Bus) data communication port of the spectrum analyzer, a GPIB data communication port of a computer and a computer are connected in sequence. According to the electromagnetic environment automated testing device for the aviational radio navigation station and the electromagnetic environment automated testing method for the aviational radio navigation station provided by the invention, the uncertainty and difference of test results among different test units in the test process are reduced, the accuracy and uniformity of measurement are ensured, thereby realizing the automated measurement, reducing the labor intensity, and improving the measuring efficiency tremendously.

The invention discloses a three-freedom-degree parallel mechanism with a connection rod deformation error detection function. The three-freedom-degree parallel mechanism comprises a fixed platform, a movable platform, a sensor fixing frame, a two-dimensional image sensor set, three branched chains, laser transmitters, a multifunctional card and a computer. Each branched chain comprises a vertical column, a movable pair, a rotary pair, a connection rod and a spherical pair. The vertical columns are perpendicularly installed on the fixed platform. The movable pairs are connected with the vertical columns and connected with the movable pairs. The connection rods are connected with the rotary pairs and the spherical pairs. The spherical pairs are installed on the movable platform. Lasers emitted by the laser emitters irradiate two-dimensional image sensors by arranging the laser emitters on the connection rods, the deformation errors of the connection rods are obtained according to coordinates of irradiation points through the robot kinematics, and accordingly the pose error of a rotor can be determined. According to the three-freedom-degree parallel mechanism with the connection rod deformation error detection function, error compensation, precision improving, error tracing and mechanism optimization design can be conducted on the 3-PRS parallel mechanism, wide application of the three-freedom-degree parallel mechanism in industrial production is facilitated, and the three-freedom-degree parallel mechanism has important academical significance and practical value.

The invention relates to an automatic intelligent foundation pit inclination measurement system. The automatic intelligent foundation pit inclination measurement system comprises an automatic lifting control unit, an inclination measurement sensing unit, a short-range and remote wireless communication unit and power supply units. The automatic lifting control unit comprises a power motor and an automatic lifting control device. The inclination measurement sensing unit comprises an inclination measurement control circuit, an inclination measurement sensor device and a ZigBee single-chip microcomputer. The short-range and remote wireless communication unit comprises a short-range communication ZigBee single-chip microcomputer and a remote communication data transfer unit (DTU) module. The power supply units comprise the ground power supply unit and the inclination measurement sensing power supply unit. According to the automatic intelligent foundation pit inclination measurement system, a brand-new automatic inclination measurement system is adopted, the dependency of a traditional inclinometer on workers is eliminated, and all-weather automatic measurement is achieved; and measurement errors which are caused by human factors can be reduced, the engineering time can be shortened, and the engineering cost can be reduced.

The invention discloses an automatic sorting circuit based on the parallel use of the sic MOSFET devices. A power supply unit I supplies power to the drain electrode of the device through a series load, a current monitoring unit I is used for measuring the current passing through the device, and the driving unit I provides required modulation driving for the device. A power supply unit II suppliespower to Q1 through a constant current source, and the grid electrode of the Q1 is connected with a driving unit II. A current monitoring unit II is used for measuring the current passing through theQ1, and the driving unit II is used for providing driving for the Q1, and is in signal synchronization with the driving unit. A voltage monitoring unit I is used for measuring the voltage of the drain electrode of the Q1, and a voltage monitoring unit II is used for measuring the driving voltage of the grid electrode of the device. The invention further discloses an automatic sorting method. According to the invention, the conduction impedance is measured by adopting an isolation measurement method; the circuit structure is simple, and the monitoring voltage is always low; the forward conducting voltage drop of the diode is enabled to be consistent by adopting a double-diode back-to-back connection method; a specific ultra-small junction capacitor diode is adopted, so that the measuring frequency is the same as the actual working frequency and is in conformity with the fact.

The invention relates to a three-dimensional point cloud model-based monocrystalline silicon rod boundary dimension measurement method. The method includes the following steps that: point cloud is layered along a direction perpendicular to the direction of the axis of a monocrystalline rod three-dimensional point cloud model, altogether N layers are obtained; the geometric central point of the cross-section profile point cloud of each layer is calculated; straight line fitting is performed on the N geometric central points, so that the geometric central axis of the monocrystalline silicon rod can be obtained; a distance from any one point in the monocrystalline silicon rod three-dimensional point cloud model to the geometric central axis is calculated; and the difference value of the maximum y-coordinate and minimum y-coordinate in the single-crystal silicon rod three-dimensional point cloud model is the height value of the monocrystalline silicon rod. With the three-dimensional point cloud model-based monocrystalline silicon rod boundary dimension measurement method of the invention adopted, errors caused by the complexity and diversity of the surface shape of the monocrystalline silicon rod and manual measurement in which a worker performs measurement by using tools such as a vernier caliper can be eliminated. The method provided by the present invention has the advantages of simplicity, easiness in implementation, low complexity, high accuracy and easiness in data storage and transmission. With the method adopted, automatic measurement can be realized, the efficiency and precision of the boundary dimension measurement of the single-crystal silicon rod can be improved, and quality assurance can be provided for monocrystalline silicon sheet production.

The invention discloses a measuring device and method for the height of melt of an aluminum electrolytic cell and pressure drop of the furnace bottom. The measuring method comprises the steps of proposing derivation processing on potential data based on the huge difference among the specific resistance of air, the specific resistance of aluminum liquid and the specific resistance of electrolyte; determining an air-electrolyte interface and an electrolyte-aluminum liquid interface by analyzing a potential-displacement phi (s) curve and a potential change rate-displacement phi' (s) curve, and further calculating the height of the melt and the pressure drop of the furnace bottom. By means of the measuring device and method for the height of the melt of the aluminum electrolytic cell and pressure drop of the furnace bottom, automatic, efficient and accurate measurement of the height of the melt of the aluminum electrolytic cell and pressure drop of the furnace bottom is achieved, the automation degree is improved, the labor amount of workers is reduced, a process parameter detection result can serve as a control signal source of a cell control machine to be directly fed back to a control system to improve the control level of the cell control machine over the electrolytic cell.

The invention provides a new method for automatically measuring the screw pitch of propeller blades, which takes an image as a basis to carry out non-contact automatic measurement of the screw pitch of the propeller blades. The method comprises the following steps: firstly, collecting the images of the propeller blades by utilizing equipment such as a computer, a projector, a camera and the like; acquiring a coordinate of a two-dimensional image coordinate system of all the projective points of the blades by taking a digital image processing technology as a basis; calculating a coordinate of a three-dimensional real-world coordinate system of all the projective points of the blades by utilizing a camera calibration model; and finally calculating the screw pitch of the propeller blades by utilizing the computer.

The invention provides a device for automatically measuring the diameter of a tree and belongs to the field of measurement tools. The device for automatically measuring the diameter of the tree is composed of a handle, a starting switch, a rapid back-out switch, a digital display screen, a position sensor, a pressure sensor, a dynamic control sliding block, a cylindrical rolling shaft, a guide rail with a scale and a front rod and is characterized in that the handle is installed on the rear portion of the guide rail with the scale, the front rod is perpendicularly installed on the front portion of the guide rail with the scale, and the guide rail with the scale penetrates through the dynamic control sliding block. The starting switch, the rapid back-out switch, the digital display screen, the position sensor, the pressure sensor and the cylindrical rolling shaft are respectively installed on the dynamic control sliding block. The device for automatically measuring the diameter of the tree has the advantage that the diameter of the tree can be automatically measured.

The invention discloses an automatic elevator guide track gauge and perpendicularity measurer which comprises a controller, a bidirectional laser track gauge, a moving bracket, an adjusting bolt, a steel wire rope, a magnet, a digital display target and a laser light source. The automatic elevator guide track gauge and perpendicularity measurer can be connected with an elevator lift car for data measurement, analysis, transmission and storage, automatic measurement, calculation and analysis of elevator guide track gauge and perpendicularity are achieved, the measurement process is relatively rapid, simple, safe and reliable, and the working intensity of detectors is greatly alleviated.

The invention discloses a crude oil storage tank oil-water liquid level measurement device and method. The device comprises a crude oil storage tank and an oil-water liquid level measurement device body arranged in the crude oil storage tank, wherein the oil-water liquid level measurement device body comprises a light source lighting array and a light-sensitive sensing array which are arranged in a medium in the crude oil storage tank in parallel. The light source lighting array comprises a plurality of serially connected light emitting diodes, the light-sensitive sensing array comprises a plurality of serially connected light dependent resistors, the top of the light source lighting array and the top of the light-sensitive sensing array are connected with a data acquisition module, and the data acquisition module is located at the top of the crude oil storage tank. The difference principle that propagation and absorption of light in different media are different is utilized to acquire light signals absorbed by the media through a light-sensitive sensor, different data of the different media is obtained, gas, oil, water and an oil and water mixed medium are distinguished, and stable, efficient and accurate measurement of the oil-water liquid level of the crude oil storage tank is achieved.

The invention discloses a high-precision automatic measurement device for a batch equipment attitude angle matrix on a satellite. According to the device, a theodolite with CCD imaging and automatic collimation functions, a visual search camera, a precise rotary table, a precise guide rail and the like are integrated; a measured satellite is fixedly arranged on the precise rotary table; the measurement device is automatically positioned by virtue of the precise guide rail and the precise rotary table according to theoretical installation positions of multiple to-be-measured equipment on the satellite; a reference cubic mirror is subjected to image recognition and search in a narrow range by virtue of the visual search camera so as to realize automatic and precise collimation; and finally, automatic measurement of the batch equipment attitude angle matrix is realized. According to the high-precision automatic measurement device for the batch equipment attitude angle matrix on the satellite disclosed by the invention, the automatic measurement of the attitude angle matrix between different pieces of equipment by taking an optical cubic mirror as the reference can be realized under the condition that theoretical installation data exists, the measurement accuracy is superior to 5'', and the measurement efficiency can reach one item per minute.