31results about How to "Eliminate subjective errors" patented technology

The invention provides a reciprocating sealed foundation test system and method. A piston rod of a first test cylinder and a piston rod of a second test cylinder in the reciprocating sealed foundationtest system are connected with a piston rod of a driving cylinder; an input end of a first main pump is connected with a first oil tank, an output end of the first main pump communicates with a portP of a first electromagnetic reversing valve, a port A of the first electromagnetic reversing valve communicates with an oil inlet of the driving cylinder through a first test branch circuit, an oil outlet of the driving cylinder communicates with a port B of the first electromagnetic reversing valve through a second test branch circuit, and a port T of the first electromagnetic reversing valve isconnected with a first oil tank; and an input end of a second main pump is connected with a second oil tank, an oil inlet of the first test cylinder and an oil inlet of the second test cylinder communicate with an output end of the second main pump, an oil outlet of the first test cylinder and an oil outlet of the second test cylinder are connected with an input end of a first overflow valve, andthe output end of the first overflow valve is connected with the second oil tank. By the system, a frictional force curve, a kinetic friction force curve and a leakage-cycle index curve can be obtained.

The invention discloses laser resonant cavity automatic cavity adjusting system and method based on interference fringe picture skeleton line processing. The automatic cavity adjusting system comprises a guide light laser, a laser resonant cavity, a coupling output mirror, a camera, a computer and a cavity mirror control system, wherein the laser resonant cavity comprises an adjustable cavity mirror. The invention also provides an automatic cavity adjusting method corresponding to the automatic cavity adjusting system, which can perform rapid and precise judgment on the alignment of the laserresonant cavity and provide a control signal in real time for the cavity mirror control system, thereby achieving the aim of rapidly and automatically adjusting a cavity. By adopting the cavity adjusting system and the cavity adjusting method, the precision, speed and repeatability of the traditional manual cavity adjusting method can be effectively improved. In addition, the method can be further popularized and applied to the automatic adjustment of an optical system with an interference fringe of an output light field.

An image processing method for automatic recognition of pointer instrument readings disclosed by the present invention, the implementation steps are as follows: (1) Hough circle detection is performed on the image, the center and radius of the dial are located using the weighted average method, and a square image of the dial area is extracted; (2) Image preprocessing, extracting the binary value of the instrument pointer to refine the image; (3) Use the center projection method to determine the pointer angle; (4) Extract the zero scale line, full scale line position template, and calibrate the starting point and end position of the range; (5) Use the template Match to get the angle of zero scale line and full scale line; (6) Calculate the pointer reading according to the pointer angle, zero scale line angle and full scale line angle. The invention solves the problem that the relative position of the camera and the pointer meter is not fixed, which leads to the problem that the position of the meter dial on the collected image is not fixed, not only can eliminate the subjective error caused by manual reading of the meter reading, but also can improve the efficiency and accuracy , Guarantee the safety of personnel, wide application range and strong robustness.

The invention relates to an electronic camera shooting type tool presetting device and measurement method. The electronic camera shooting type tool presetting device is characterized in that the device comprises a Y-direction horizontally-moving mechanism, a detection mechanism, an X-direction horizontally-moving mechanism, a Z-direction main shaft mechanism and a drive module; the upper portion of the X-direction horizontally-moving mechanism is fixedly connected with the lower portion of the Y-direction horizontally-moving mechanism; the detection mechanism is connected with the Y-direction horizontally-moving mechanism; the Z-direction main shaft mechanism is arranged below the detection mechanism; the Y-direction horizontally-moving mechanism, the detection mechanism, the X-direction horizontally-moving mechanism and the Z-direction main shaft mechanism are controlled by the drive module to act; the Y-direction horizontally-moving mechanism comprises a stand column, a Y-direction servo motor, a Y-direction synchronous belt, a Y-direction toothless threaded rod, a Y-direction grating ruler, a Y-direction guide rail, a Y-direction slide block, a Y-direction slide table, a Y-direction limiting switch, a Y-direction limiting baffle, a connection belt, bearings, a Y-direction fine adjustment wheel and a detection mechanism balancing weight; the stand column is a rectangular frame, wherein the back face of the stand column is in a U shape; the Y-direction guide rail is installed on the front face of the stand column; and the Y-direction slide table is fixed to the Y-direction guide rail through the Y-direction slide block.

Two portions of large dam horizontal-vrtical displacement meter are respectively improved, the horizontal portion, the counterpoise for measuring steel wire is changed into electric measurement, the internally-mounted small type hoist can be used for controlling suspension and put-down of the counterpoise, and the displacement can be read out by coder, and the horizontal measurement portion, a liquid-supplying box is added, an electromagnetic valve is set and is connected with level meter, and a controller is used for controlling electromagnetic valve to supply liquid. It also includes the components of stepper motor and plumb, and can make two displacement measurements so as to implement automation, remote measurement and remote control, and can raise the measurement accuracy.

The invention discloses a control system for integrated synchronous jacking of a cut pier and a control method. The control system comprises two hydraulic jacking devices for providing jacking power, two hydraulic circuits connected with the two hydraulic jacking devices respectively, two oil feeding amount adjusting devices and a jacking balancing state monitoring device, wherein the two oil feeding amount adjusting devices are installed on the two hydraulic circuits respectively, and the jacking balancing state monitoring device performs real-time monitoring to a balancing state of a structure needing to be jacked in the jacking process and controls the two oil feeding amount adjusting devices according to monitoring results. The control method comprises the steps of jacking preparation and jacking, upward jacking is performed to the structure through the two hydraulic jacking devices in actual jacking until the structure is jacked to a preset height, and timely dynamic deviation rectification is carried out to the structure. The control system for integrated synchronous jacking of the cut pier and the control method are reasonable in design, high in automation, good in coordinating performance and safety performance and simple and convenient to control, enables the jacking process to be smooth and efficient, and can effectively solve the construction problem that unbalanced elevation discrepancy limitation in the pier cutting integration jacking process cannot be automatically controlled.

The invention discloses an automatic bacterial vaginosis detector, comprising a loading device, an incubation device, a sampling needle device and a detection device, wherein the loading device is used for placing a sample cup; the incubation device is used for incubating a sample; the sampling needle device is used for adding a color developing agent to the sample; the detection device is used for carrying out color developing detection on the sample. Compared with the prior art, by adopting the automatic bacterial vaginosis detector provided by the invention, the automatic degree and the detection efficiency of the bacterial vaginosis (BV) detector can be improved, the stability of enzymatic activity is ensured, cross infection is eliminated, and the failure rate and energy consumption of the detector in operation are reduced.

The invention discloses a non-eccentric vertical vibration device and method for a pile foundation with caps based on a buckle-type device. The present invention can use bolts to fix the half-type platform to a certain height of the pile body exposed on the ground surface, so that the half-type loading ring can be spliced ​​at the pile body on the upper part of the platform, and the clamp can be used after it is assembled into a whole Lift the loading ring to a certain height, loosen the clamp, and the loading ring freely falls to the platform to apply excitation, which provides a non-eccentric vertical loading method for the pile foundation inspection under the existing cap. The loading method and device proposed by the present invention subtly overcome the disadvantage of being unable to perform vertical knocking on the top of the pile foundation to be tested with a cap in the traditional low-strain test, and the component connection has high repeatability and can be connected into various shapes , conveniently adjust the inner diameter of the loading ring to meet the positioning of workpieces of different shapes. The invention is suitable for the non-eccentric vertical excitation in the low-strain integrity detection of the pile foundation to be tested under the existing buildings.