334 results about "Electronic level" patented technology

An instrument for determining angular inclinations includes a rectangular frame having a generally transparent rotatable disk positioned therein. The disk includes a weight that is gravitationally attracted to the Earth's surface and circuitry for determining the disk's relative rotational position. A light source and sensor surround the disk and cooperate to determine the disk's angular position according to opaque lines imprinted on the disk's surface. The instrument includes a speech generator having a memory in which a plurality of audible messages corresponding to respective angular inclinations are stored. The instrument includes logic circuitry for determining an appropriate message to be generated according to the sensed position of the disk. This message is emitted through a speaker. The instrument further includes visual indicators relative to the angular inclination of the frame. Audible messages in multiple languages are stored in the speech generator memory and may be selectively accessed by a user.

A portable communication device is equipped with a level application to provide the device with a level sensing functionality. The level application and level sensing functionality is based on data related to the orientation and/or motion of the device. The level application and level sensing functionality allow the position of the communication device in multidimensional space to be ascertained relative to a reference plane, which allows a user to utilize the communication device as a level.

The invention relates to an attitude testing apparatus and method based on an autocollimator. The apparatus mainly comprises the autocollimator, an optical hexahedron, a double-shaft electronic level meter and a pedestal with a leveling function. The method comprises the following steps: putting the attitude testing apparatus on a firm base, allowing the autocollimator to collimate a reflecting surface of an object, then collimating the optical hexahedron with an autocollimation gyro theodolite and measuring the included angle between the apparatus and a true north azimuth reference; starting the autocollimator for recording and retrieving of continuous data of the attitude of the reflecting surface of the object and starting the double-shaft electronic level meter for recording and retrieving of continuous data of horizontal attitude; and after completion of recording and retrieving of the data, processing the data of the autocollimator and the double-shaft electronic level meter by using a data processing method for the attitude testing apparatus so as to eventually obtain continuous changes of the attitude of the reflecting surface of the object in a geographic coordinate system, thereby meeting demands of continuous absolute measurement.

The invention provides a method for directly producing high-purity electronic level cobaltous sulfate by using cobalt-containing waste, in particular a process for producing cobaltous sulfate by using cobalt-containing waste. The method comprises the steps of: checking and classifying raw materials, wet-milling and size-mixing, acid-decomposing, filtering, washing, separating, and extracting copper sponge. The method is characterized by also comprising the steps of: removing iron with a goethite process, extracting P2O4 and removing impurities, separating nickel from cobalt, extracting N235, purifying, concentrating and crystallizing. The high purity electron level cobaltous sulfate is directly regenerated by using various kinds of cobalt wastes, the requirement of the modern high-technology industry on high purity of the cobaltous sulfate is met; the total recovery of the cobalt is higher than or equal to 98 percent; various usable elements can be comprehensively recycled, and coppersponge, tungsten carbide, iron hydroxide and nickel carbonate can be regenerated while the electronic level cobaltous sulfate as a main product is regenerated. The invention has the advantages of comprehensively utilizing waste cobalt resources, recycling the wastes, improving the enterprise benefit, and being beneficial to the development of energy conservation, emission reduction, environment protection and circular economy.

Determination of hydraulic properties such as porosity and permeability of soil is of paramount importance in hydrology and civil engineering. In order to achieve greater accuracy in determination of permeability of soil using falling head permeameter, the two important known constraints of human monitoring error in noting the falling water level between two selected levels and elapse time between these two levels had overcome through electronically sensing the levels between two selected points and activating the timer clock automatically by the pulses coming from senor. The precision in measurement of time lapse in 1/100^th a second enables greater accuracy in estimation of permeability. Provision of perforated Teflon disc above and below the soil core facilitates in application of water uniformly over the entire surface area of soil core at top and similar way permeated water leaving the soil core uniformly without any obstruction. The use of carbon steel seamless tube while collecting soil core facilitated in undisturbed soil core recovery from desired depth section. The permeability test was conducted for various sorted sands of different size ranges and each sample was subjected to repetitive tests and elapsed time for each test was recorded from timer unit. Coefficient of Permeability was calculated for each test. The lab experiment conducted for sorted and unsorted sediments has yielded a consistent performance of Electronic level sensor and timer based falling head soil permeameter.

The invention discloses an automatic leveling and gyroscopic orientation sighting device. The automatic leveling and gyroscopic orientation sighting device comprises a gyroscopic north-seeking part, a theodolite part and a tripod used for supporting, wherein the gyroscopic north-seeking part is connected with the theodolite part to form a whole body through a supporting disk, and installed on the upper surface of the supporting disk, the upper end of a vertical shaft of the theodolite part is installed on the lower surface of the supporting disk, the upper end of the tripod is provided with a leveling base, three linear motors are arranged on the leveling base, the upper ends of output shafts of the linear motors are connected with a universal adjusting column, an adjusting platform is installed on the universal adjusting column, an electronic level meter is embedded in the adjusting platform, the output of the electronic level meter is connected with the linear motors through control circuits, and a theodolite base is installed on a table board of the adjusting platform. The automatic leveling and gyroscopic orientation sighting device is small in size, light in weight, convenient to carry, simple in mechanical structure and convenient to maintain. The automatic leveling and gyroscopic orientation sighting device can be used for realizing automatic leveling, the consumed leveling time is short, the actual north-seeking time is shortened, the leveling precision is high, and north-seeking results are accurate.

Alignment monitoring systems for directional and omni-directional antennas that are mounted to the antennas and which include solar sensors that are mounted with enclosing housings such that solar imaging across the surface of one or more sensing elements is used to determine a current alignment of the antennas in at least in one of headings, or azimuths of the antennas, or tilt angles thereof relative to a horizontal plane, and wherein signals generated by the sensing elements are communicated to data processing units.

The invention relates to a rapid repairing method for a sunken ballastless track through grouting lifting. According to the method, grouting materials, device tools and a construction technology are needed, and the method specifically comprises the steps that after lifting quantity of the ballastless track is determined, a high-pressure grouting device is adopted, and under certain grouting pressure, rapid-hardening grouting materials are grouted under a ballastless track base which is horizontally arranged in advance and in grouting bags in a graded broken stone surface layer through a grouting pipe in a certain sequence; in the grouting process, an electronic level precise measurement device is adopted to monitor elevation changes of the upper portion of the track in real time, when the elevation is close to or reaches the designed elevation, grouting lifting is stopped, then rapid-hardening grouting materials with high fluidity are directly grouted in the gap between the lifted base and the graded broken stone layer, the grouting materials rapidly and fully fill the gap and are solidified, the lifted base and the graded broken stone layer are integrally bonded, and the ballastless track is precisely lifted and firmly located.

An automatic control method for lifting an ocean platform is disclosed, and comprises the steps that an electronic level meter detects the inclined angle of the platform and inputting the inclined angle to a main controller; the main controller corrects the inclination data of the platform according to predetermined coefficients Kx and Ky; a linkage operating handle inputs the handle speed command Vo to the main controller and the main controller applies PID (Proportion Integration Differentiation) algorithm to acquire the leg running speed Vout and inputting the Vout to a speed control valve; the speed control valve controls a hydraulic motor to control the leg to run according to the speed command till the platform is lifted. The invention further discloses an automatic control device for lifting an ocean platform. The electric level meter is connected on the platform. The output end of the electric level meter is connected with the input end of the main controller and the output end of the main controller is connected with the speed control valve of each leg. The automatic control method and device for lifting an ocean platform control the leg to life synchronously and maintainthe platform by adopting closed-loop control of platform gesture, and are simple to operate and have high safety.

The invention discloses a device and a method for automatically adjusting a loaded mass center of a platform surface of a single-shaft air floatation rotating platform and relates to a device and a method for adjusting a loaded mass center of a platform surface of a single-shaft air floatation rotating platform. The invention solves the problems of low adjusting efficiency and low accuracy of adjusting results of the traditional method for manually adjusting the loaded mass center of the platform surface of the single-shaft air floatation rotating platform. Four mass adjusting devices of the device are uniformly distributed and fixed at the edge of the air floatation rotating platform; a guide rail is disposed on each mass adjusting bracket; stepping motors fixed at one end of the guide rail drive a mass block to slide along the guide rail; the signal output end of an electronic level meter is connected with the signal input end of a control module; and the drive signal output end of the control module is connected with the drive signal input end of each stepping motor. In the method, the electronic level meter acquires and inputs platform surface levelness to the control module; and the control module drives four stepping motors to adjust the loaded mass center on the platform surface to be superposed with the center of the platform surface. The invention is suitable for adjusting the loaded mass center of the platform surface of the single-shaft air floatation rotating platform.

The invention discloses a light two-freedom-degree camera stabilized platform device. A stabilized platform base frame (4) is connected with an air vehicle, and a transversely-rolling frame (1) and a pitching frame (2) rotate around an X axis and a Y axis respectively; a stabilized platform is corrected by double loops, a speed ring is used as the inner ring, and a position ring is used as the outer ring. Horizontal plane dip angle data collected by an electronic level meter, angle information measured by a grating encoder (5) and angular rate information measured by an MSMS inertia measurement assembly are transmitted to a DSP module through a communication interface circuit, and PWM waveforms are output by a DSP and converted into voltage signals through a motor driving power amplifier plate to drive two servo motors to conduct the real-time adjustment on the gestures of the platform to keep stabilization of an object to be stabilized. The light two-freedom-degree camera stabilized platform has the advantages of being good in stability, high in accuracy, small in size, wide in adjustment scope and suitable for aerial photographing.

A present invention is for a device and method for measuring and calibrating the rotary motion of a rotatable machine member, such as a pivotable swivel member (2b) of a spindle (2) of a five-axis machine tool (1). The device includes an arm (110) mounted to the spindle, a housing (120) mounted to the arm, an optical encoder mounted internal to the arm and positioned therein to measure rotation about an axis extending lengthwise along the housing, which such axis is parallel to the axis about which the swivel member rotates. The device also includes a rotary table (170) mounted to the housing opposite the arm, the rotary table comprising a stator (171) fixedly mounted to the housing and a rotor (172) clampedly affixed to a shaft passing through the housing. The shaft is coupled to an input shaft of the encoder such that rotary movement of the rotor can be measured by the encoder. An electronic level (190) fixedly secured to the rotor, such as by a bracket (180). The encoder, the rotary table and the level are each electronically coupled to a control system which is adapted to obtain readings from the encoder and from the level and to command controlled rotation of the rotor relative to the stator.

This disclosure is directed to an electronic thermostat for a heating, ventilation, and air conditioning (HVAC) system that includes an electronic level feature and leveling register that allow the thermostat housing to be rotated about a mounting wall plate to place the thermostat housing in a leveled position. In one aspect, the thermostat includes at least one accelerometer. Other systems and methods are disclosed.

An electronic level consists of a capacitive sensor and a measurement processor circuit. A sensor measuring circuit, an A/D conversion circuit, CPU and a LCD display are connected in series in the measurement processor circuit. A capacitance/frequency conversion circuit, the CPU and the LCD display are connected in series. The invention possesses the features as follows. (1) Capacitance is used as the sensor for measuring level, providing the high measuring accuracy with simple structure. (2) The measurement processor circuit with simple structure of the circuit is adopted, providing high sensitivity with cheap component. (3) The entire structure is simple so that the products are easy to be manufactured. The electronic level can be utilized in large-scale or precise engineering.

In the basic Diode-Pumped Alkali Laser (DPAL) device, excitation to the n .sup.2P.sub.3/2 electronic level by a single diode laser pump source leads to a population inversion between the first excited electronic .sup.2P.sub.1/2 level and the ground .sup.2S.sub.1/2 level, permitting the construction of efficient, high-power, compact DPAL laser oscillators in the near infrared spectral region. The present invention extends the single-step excitation DPAL to a two-step excitation, or up-conversion DPAL to produce efficient, powerful laser operation in the visible blue and near UV spectral regions (viz., in the range 460-323 nm). The present invention describes an apparatus and method that efficiently sums the energy of two, near-infrared diode pump photons in alkali vapor atoms, followed by stimulated emission to their electronic ground levels.

The invention provides an electronic level gauge and calibrating and using method thereof. The electronic level gauge comprises a cuboid casing, and an acceleration transducer, a main circuit board and a LED display driver are arranged in the cuboid, the circuit includes that a microprocessor and a voltage regulator circuit are arranged on the main circuit board, the acceleration transducer is connected with the microprocessor, the microprocessor is connected with the LED display driver and keys, the LED display driver is connected with a LED display, the voltage regulator circuit provides working power source for the acceleration transducer, the microprocessor and the LED display driver. The calibrating method employs twice horizontal calibrations and twice perpendicular calibrations. The using method is respectively positioning the high end and the low end of the level gauge in the high position and low position of measured surface. The electronic level gauge has the advantages of simple overall structure, low cost, easy manufacturing products and the like, which can meet various requirements of horizontal and angle of inclination measuring in large or precise projects, and has wide application prospect.

The invention discloses a second-class bench mark on-bridge measurement method, which is characterized in that under-line bench marks and on-bridge bench marks are respectively arranged at a first bridge pier to be measured and a second bridge pier to be measured; by utilizing two known elevation control points which are positioned at different positions, the elevation difference between each elevation control point and each under-line bench mark can be respectively obtained through a back-and-forth measurement mode complying with the line of a level; the elevation difference between each under-line bench mark and each on-bridge bench mark can be measured by utilizing a full-station measurement instrument; the elevation difference between the two on-bridge bench marks can be measured by an electronic level; and finally, the elevation of the first on-bridge bench mark and the second on-bridge bench mark can be obtained according to a compensating computation method. The invention is used for determining the elevation of a high pier, and has the advantages that the measurement process is more convenient and fast, the measurement precision is higher, and the construction requirement can be met.

The invention provides a device for measuring the angle of pitch of a two-dimensional high-precision turntable and other high-precision angles of pitch and a measurement method utilizing the measurement device. A horizontal multitooth indexing table/ horizontal angle encoder is combined with an electronic level meter, or the horizontal multitooth indexing table/ horizontal angle encoder is combined with a plane mirror and an auto-collimation instrument to measure the labeled error of the angle of pitch of the two-dimensional high-precision turntable. The measurement device and measurement method have the advantages that the measurement device is convenient to use and compact in structure, it is convenient to achieve automated testing, and meanwhile high measurement precision and stability are achieved.

The invention provides E glass fiber paper for a CEM-3 copper-clad plate and a manufacturing method of the E glass fiber paper. The E glass fiber paper is composed of glass fibers and an adhesive. Cut-short glass fibers are dispersed in white water prepared from deionized water, a glass fiber dispersing agent, a thickening agent, a defoaming agent and other chemical auxiliaries, the glass fibers are scooped out of the white water to form wet ground paper, chemical adhesives and auxiliaries are applied for adhesion, drying through a drying furnace is conducted, the adhesives are solidified, andthe E glass fiber paper for the CEM-3 copper-clad plate is formed. The cut-short glass fibers are E glass fibers of the electronic level. The E glass fibers prepared from the method are uniform in fiber dispersing, stable in gram weight and consistent in thickness; the fibers are high in tensile strength, high in solvent resistance and high in fiber porosity due to all-direction distribution, a large amount of dielectric filler can be added when the glass fibers are soaked in epoxy resin, and the glass fibers are a high-quality base material for manufacturing the CEM-3 copper-clad plate.

The invention discloses a course installation error determination method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring a course angle and atrack angle output by an integrated navigation system of driving equipment in a first driving process, wherein the course angle is determined according to a first sensor in the integrated navigationsystem, the track angle is determined according to a second sensor in the navigation system, and the driving strategy of the first driving process is that the driving equipment performs linear drivingat a speed not less than a preset speed; determining a track angle mean value according to the track angle, and determining a course angle mean value according to the course angle; and obtaining a course installation error of the first sensor according to the track angle mean value and the course angle mean value. The invention has the beneficial effects that hardware of driving equipment does not need to be changed, expensive and complex-to-operate equipment such as an electronic level quadrant and a theodolite does not need to be utilized, the robustness of a calculation result is enhancedthrough mean value calculation of data, the cost is low, the result is accurate, and the efficiency is high.