30results about How to "Accurate measurement and positioning" patented technology

The invention discloses a monitoring device for a viscoelastic strength of blood. The monitoring device comprises a supporting plate, a detection mechanism, a vibration mechanism and a measuring cup, wherein the detection mechanism is internally provided with a laser transmitter and an angular displacement sensor; a probe is provided with a mirror surface; the vibration mechanism comprises a guide rod, a rotary ring, a driving device, a cup frame and a cup cavity; the measuring cup comprises a cup body, a cup head and a heavy block embedded in the cup head; the detection mechanism is externally sleeved with a rotary bearing; the rotary ring is fastened on the rotary bearing. According to the monitoring device for the viscoelastic strength of the blood, the vibration mechanism is used for carrying out regular vibration on a blood sample in the measuring cup to simulate a physiological environment in which in-vivo thrombi is formed; an optical lever method replaces a traditional electromagnetic measurement method to be used for detecting so that the measurement precision and the flexibility are obviously improved; the device is simple and practical in structure, small in mechanism friction, accurate in probe positioning and high in measurement precision, and can meet the requirements of current clinical blood coagulation detection analyses.

The invention relates to the technical field of precast column construction, in particular to a precast column assembly construction method. The invention fixedly locates pre-embedded reinforcing barthrough a shaping template with a locating hole, then the column is positioned by using the mortar retaining formwork and the column limiting plate, brackets and adjusting jacks installed on upright posts, The utility model can make the lifting survey and positioning of the upright column accurate, improve the installation efficiency, satisfy the subsequent assembling construction of the precast cover beam, greatly improve the installation efficiency of the upright column, ensure the construction quality, reduce the input of the labor force on the construction site, shorten the time of the on-site construction operation, and promote the on-site construction and production progress.

The invention provides a measuring tool and method for spline addendum circle diameter of disc gears, which solves the problem that the existing measuring accuracy of the addendum circle diameter of odd splines cannot meet the requirement of high precision tolerance. The inspection tool includes a frame, a positioning unit and a dial indicator; the upper surface of the frame is inclined, and a positioning platform is installed on the frame; the dial indicator and the positioning unit are respectively arranged on the upper and lower sides of the positioning platform; the positioning unit includes a V-shaped positioning block, spring, plug and positioning measuring ball; the V-shaped positioning block is installed on the frame body, and the V-shaped positioning groove of the V-shaped positioning block is close to the positioning platform. There is a stepped through hole in the V-shaped positioning block, and the positioning of the positioning measuring ball The main body is set in the large hole, and the measuring head of the positioning measuring ball protrudes out of the small hole to contact the tooth groove of the tested piece; the plug is set at the bottom of the first large hole; the spring is set in the first through hole , and is located between the plug and the positioning body; the dial gauge is installed on the frame through the locking piece; the center line of the dial gauge is collinear with the center line of the positioning ball.

The invention discloses a system and a method for monitoring the quality of an optical link of a passive optical network. Optical bragg gratings are arranged at the termination positions of each optical link of the passive optical network. An optical fiber analyzer is arranged on the local sides of the optical links, and is connected with each optical link of the passive optical network by a full-cross optical switch and a coupler. The method comprises that: the optical fiber analyzer produces and transmits testing light with testing wavelengths for link monitoring, and the testing light passes through the full-cross optical switch and the coupler, is periodically coupled with light, with working wavelengths, emitted from each port of each optical line terminal (OLT) equipment on the local side in turn, and is output to the optical links of the ports; and the optical fiber analyzer detects the fed-back testing light, extracts testing light data, compares the acquired data of a current port with own normal state data values of the port, and reports alarming and performance events if a variation exceeds a preset redundancy threshold. In the system and the method, centralized and automatic one-stop periodical monitoring is realized in the passive optical network.

The invention is a noncontacting infrared temperature meter and the spacing control method. The thermometer includes infrared radiation sensor, spacing control device, processing unit and displaying device, the spacing control device mainly includes illuminant mechanism and observing mechanism, they are connected through circuit or wire. The method is: the beam transmitted by the illuminant mechanism and the observing path of the observing mechanism are crossed in the special region of the preset distance, only when the measured target is in the special region, the light spot or image projected to the measured object can be observed through the observation mechanism.

The invention discloses a portable space magnetism distribution measurement system which comprises a magnetic sensor, a data collecting module, a battery, a machine frame and a distance measurement module, wherein the signal end of the magnetic sensor is connected with the data collecting end of the data collecting module, and the magnetic sensor, the data collecting module, the battery and the distance measurement module are all installed on the machine frame. The distance measurement module comprises a pull wire and a pull wire induction device, wherein the signal output end of the pull wire induction device is connected with the collected trigger signal input end of the data collecting module. When space distribution of a magnetic field in a specific area is measured, firstly, the head end of the pull wire is fixed to a start point, an operator carries the measurement system to walk along a to-be-detected path, the data collecting module is triggered through a distance signal induced by the distance measurement module, and the equally-spaced magnetic field distribution of the to-be-detected space in the walking direction can be obtained. The portable space magnetism distribution measurement system has the advantages of being accurate in distance positioning, convenient to operate and low in time cost and especially suitable for magnetism distribution measurement operations of a small outdoor area.

Provided are a steel bar measurement positioning device and a construction method thereof. The positioning device is a rectangular frame defined by sequential alternate connection of two long direction positioning scales and two short direction positioning scales or is a rectangular frame defined by sequential connection of four long direction positioning scales. The long direction positioning scales and the short direction positioning scales are perpendicular to the same plane. The long direction positioning scales are movably connected with moving clamping parts, the lower ends of the moving clamping parts are horizontally connected with positioning screws, and the tail ends of the positioning screws are located in the rectangular frame and connected with positioning pipes. According to the steel bar measurement positioning device and the construction method thereof, the problem of steel bar positioning inaccuracy is solved, so that steel bar construction quality is guaranteed, the number of scrapped components is reduced, and the prefabrication cost is reduced.

The invention belongs to the technical field of prefabricated bridge construction, and discloses a measuring and positioning device. The key points of the technical scheme include four sets of labels arranged on the side of the column, a longitudinal measuring instrument and a transverse measuring instrument erected on the bearing platform. A measurement and positioning method for the installation of bridge prefabricated columns, the key points of the technical solution include setting out the axis of the column and pasting labels, erecting a longitudinal measuring instrument, erecting a horizontal measuring instrument and a cylinder, adjusting the posture of the column according to the longitudinal monocular telescope, and using a support frame Limiting the position of the column and adjusting the posture of the column according to the horizontal monocular telescope can accurately measure and position the column, quickly correct the plane position and verticality of the column, and achieve high control accuracy.

The invention discloses a line type testing device for rail laying construction, which comprises two completely identical fixing mechanisms arranged from front to back, and the two fixing mechanisms are respectively a first fixing mechanism located at the opposite front side and a second fixing mechanism located at the rear side. The fixing mechanism is characterized in that a winding mechanism is fixed on the upper side of the first fixing mechanism, a reference positioning mechanism is fixed on the upper side of the second fixing mechanism, a measuring tape is connected between the winding mechanism and the reference positioning mechanism, and the winding mechanism There is also a measuring belt auxiliary support mechanism under the mechanism. After the positioning is completed, the winding mechanism can tighten the measuring tape and cooperate with the measuring tape auxiliary straightening device to keep the measuring tape in a horizontal and straight state, preventing the measuring tape from forming a radian and causing a large measurement error, making the measurement more accurate; And the side of the take-up roller fits the middle right side of the rail, so that the measuring tape is stretched along the side of the rail. When encountering a bend, the distance and line type can still be accurately measured, and the scope of application is wider.

The invention discloses a rail track measuring mark point positioning method. A rail track measuring mark point positioning device comprises a track inspection trolley, a linear laser, a controller and a power supply, wherein the track inspection trolley runs on a steel rail; the linear laser is arranged on the track inspection trolley and is perpendicular to the edge of a side part of a running direction, and a laser line emitted by the linear laser is perpendicular to the edge of the side part of a track inspection trolley body; the controller is arranged on the track inspection trolley and is used for controlling the linear laser to be switched on or off; and the power supply is arranged on the track inspection trolley and is used for supplying power to the linear laser. The track inspection trolley runs on the steel rail, and when the laser line emitted by the linear laser passes through a CPIII pile point or fixed point arranged beside the steel rail, the position, projected on the surface of the steel rail, of the laser line is a mark point position for the track inspection trolley to stop. The rail track measuring mark point positioning method described by the invention can solve the technical problems that the existing rail track measuring mark point positioning method is high in cost, low in efficiency, low in accuracy and low in degree of automation.

The invention relates to a breeding hen quantitative feeding device, which relates to a breeding hen quantitative feeding device of domestic animal feeding equipment, and comprises a stock tray 1, a grid 3, a stock bucket 5 and a charging measuring device inside the stock bucket 5, wherein the charging measuring device comprises a bushing-type stretchable charging pipe 10, the bottom part of the charging pipe is provided with a measuring skirt tray 11, and the charging measuring device also comprises a charging funnel 6 which is fixedly connected with the bottom part of the stock bucket and is provided with a central charging hole 7, and the central charging hole is just aligned to a charging tray conical projection 2. The breeding hen quantitative feeding device has positive effects that: the measurement scale is flexible to adjust, the charging skirt tray is flexible to pull to move from top to bottom, feed inside the stock bucket is arranged below the charging pipe skirt tray, so no resistance problem and no skirt tray clamping problem exist; and the charging funnel 6 on the bottom part of the stock bucket is fixed, and the central charging hole 7 is right aligned to the conical projection of the charging tray, and the feed is uniform to charge and distribute. The breeding hen quantitative feeding device is accurate to position the measurement, is accurate to measure the charging, so the scientific and quantitative feeding can be realized, the feeding effect is good, and the benefit is remarkable. Due to the adoption of the breeding hen quantitative feeding device, a foundation can be set for the remote automatic control of a standardized henhouse feeding line.