13results about How to "Avoid inaccurate measurements" patented technology

The disclosure provides a gap detection system for detecting global gap data between a template and a substrate, comprising: a support frame; a template holder comprising a focus detection module for monitoring gap data between the template and the substrate in real time; a workpiece table module comprising a piece supporting table for adjusting the position and attitude of the substrate; an upright surface shape detection module for detecting the substrate to obtain first surface shape data; a folded surface shape detection module capable of switching positions between a detection position and an avoidance position for detecting the template to obtain second surface shape data; and a control system for acquiring position data of the template and the substrate and calibration data of the upright surface shape detection module and the folded surface shape detection module, and for calculating global gap data between the template and the substrate by combining the position data, the calibration data, the first surface shape data and the second surface shape data after acquiring the inclination angle between the template and the substrate.

The utility model relates to the technical field of injection molding machines, and discloses an automatic feeding injection molding machine which comprises an injection molding machine body, one side of the top of the injection molding machine body is fixedly connected with a supporting frame, one end of the inner wall of the supporting frame is movably connected with a feeding funnel, and the outer wall of one end of the feeding funnel is sleeved with a worm gear ring which is located above the supporting frame. A worm is movably connected to one side of the top of the supporting frame, a servo motor is fixedly connected to the end, close to the worm, of the top of the supporting frame, a rotating shaft of the servo motor is fixedly connected to the outer wall of one end of the worm, and a supporting rod is fixedly connected to the side, close to the worm, of the top of the supporting frame. Precise linkage of a plurality of key steps such as rotary adjustment of the feeding hopper, turning and pushing of raw materials and opening and closing control of the discharging baffle is achieved, automatic and accurate feeding of the raw materials is jointly ensured, powerful guarantee is provided for efficient and stable operation of injection molding production, and the automatic feeding device is more practical.

The utility model discloses a kind of plane vector propulsion system test bench for underwater unmanned vehicle, including main stand, lifting rod, fixed auxiliary plate, circular rotary support plate, underwater robot propulsion system, U-shaped rotating frame, propeller, bearing tensile and compressive force sensor, symmetrical rotary tensile and compressive force sensor, end face disc type torsional tensile and compressive force sensor, side face disc type torsional tensile and compressive force sensor, lifting rod connects main stand and bearing tensile and compressive force sensor, fixed auxiliary plate and circular rotary support plate are sequentially connected below the sensor, U-shaped rotating frame is used to fix propulsion system and part sensor, end face disc type torsional tensile and compressive force sensor passes through the through-hole on U-shaped rotating frame and is connected with underwater robot propulsion system.The utility model technical innovation is in that sensor arrangement is arranged by reasonable structure design, high-precision dynamic data can be collected to plane vector propulsion system and omni-directional vector propulsion system underwater, to provide verification for underwater unmanned vehicle thrust control technology.

This utility model discloses a protective cover for an oral scanner, including a main body. A rectangular through-hole is formed on the front surface of the main body near the upper end. A semi-circular groove is formed on the side of the main body. A circular through-hole is formed inside the rectangular through-hole. A lens adjustment mechanism is movably installed inside the rectangular through-hole. A slot is formed on the front surface of the main body near the lower end of the rectangular through-hole. This protective cover for an oral scanner, through the lens adjustment mechanism, allows the operator to adjust the tilt angle of the protective lens as needed and clamp it in place. This effectively reduces refraction errors, improves image quality, ensures accurate measurement by the oral scanner, and reduces the influence of the protective lens on the final scanning image result. The protective clip can be fitted and clamped onto the upper end of the oral scanner protective cover, making assembly and disassembly simple. It also seals the rectangular through-hole, preventing dust and foreign objects from adhering to the surface of the protective lens before use.

The utility model relates to the technical field of prefabricated slab detection, in particular to prefabricated laminated slab detection equipment. According to the technical scheme, the remote control device comprises a support and a concave remote control car and further comprises a protective cover fixedly connected to the end, away from the support, of the concave remote control car, a tape measure is arranged in the protective cover, and a tape band movably penetrating through the concave remote control car and the support is arranged in the tape measure. According to the utility model, the support, the concave remote control car, the measuring tape, the observation mechanism and other structures are matched, so that the concave remote control car drives the tape on the measuring tape to automatically fall off, the tape is ensured to automatically measure the prefabricated laminated slab, repeated manual stretching is avoided, and the operation time consumption is reduced. Meanwhile, labor intensity is reduced, measuring personnel do not need to frequently move and stretch the measuring tape, and fatigue is relieved. In addition, the measurement precision can be improved, the problem of inaccurate measurement caused by human fatigue operation is avoided, the data accuracy and timeliness are guaranteed, and the requirements of modern engineering construction are met.

This utility model relates to a multi-range flow measurement device, including a main cavity, a rotating shaft, a damping adjustment module, a sealing assembly, a swing rod assembly, a swing arm assembly, a baffle, a base, and an angle sensor. The rotating shaft is disposed within and extends through the main cavity. One end of the rotating shaft is connected to the damping adjustment module, and the other end is connected to the angle sensor. One end of the swing rod assembly is sleeved on the rotating shaft and securely connected, while the other end of the swing rod assembly is connected to the swing arm assembly, which has a baffle. The main cavity is installed at the flow measurement position via the base. During measurement, the baffle is in direct contact with the fluid. One end of the sealing assembly is connected to the main cavity, and the other end is connected to the swing rod assembly or the swing arm assembly, isolating and sealing the baffle and the fluid outside the main cavity. This utility model enables flexible adjustment and wide-range measurement. The damping adjustment module can adjust the damping force according to actual working conditions, avoiding the measurement inaccuracy caused by the baffle reaching its maximum range at high flow rates.

The utility model discloses a device for detecting the content of methane gas in crude oil, which comprises a mounting frame, a controller and a speed reduction linear motor, a hydraulic cylinder and a heat preservation oil tank are arranged on the mounting frame, a pressure transmitter is arranged in the hydraulic cylinder, and the heat preservation oil tank is of an annular box body structure and is arranged around the outer side of the hydraulic cylinder; piston holes are formed in the lower ends of the hydraulic cylinders; piston rods are arranged in the piston holes through deceleration linear motors; a grating ruler for measuring the moving distance of the piston rod is arranged on the mounting frame; and the controller is electrically connected with the pressure transmitter, the deceleration linear motor and the grating ruler. According to the utility model, a crude oil sample is pressurized in the hydraulic cylinder, so that gas in crude oil can be dissolved in oil liquid, volume difference is generated, and the content of the gas in the crude oil can be accurately judged; gas-liquid separation of the crude oil is not needed, so that inaccurate measurement results caused by incomplete gas-liquid separation when the content of methane gas in the crude oil is detected are avoided.

This disclosure relates to the field of semiconductor integrated manufacturing technology, providing a wafer overlay compensation method, apparatus, dielectric, electronic device, and program product, including: determining a first exposure unit within a wafer area and a second exposure unit at the wafer edge; determining a plurality of first measurement points within the first exposure unit according to preset rules; determining a plurality of initial measurement points within the wafer area and the second exposure unit according to preset rules; determining an edge measurement point closest to the wafer edge from the plurality of initial measurement points; determining a plurality of second measurement points within the second exposure unit based on the edge measurement point; and performing overlay compensation on the wafer based on the measurement data of the plurality of first measurement points in the first exposure unit and the plurality of second measurement points in the second exposure unit. This significantly improves the overlay compensation effect of incomplete exposure units, thereby improving the overall wafer yield and solving the problem of poor compensation effect of incomplete exposure units.

The embodiment of the utility model provides a sphygmomanometer, which is provided with an interface, an external power supply and a sphygmomanometer, the overvoltage protection chip is connected with the interface; the charging management chip is connected with the overvoltage protection chip; the battery is connected with the charging management chip; when the sphygmomanometer is in a measurement state, the overvoltage protection chip cuts off an external power supply, and the charging management chip controls the battery to discharge. Therefore, inaccurate measurement results caused by unstable voltage when the sphygmomanometer is powered by an adapter in a measurement state can be avoided, the power supply stability of a sphygmomanometer measurement loop can be ensured through the power supply mode, and the measurement accuracy of the sphygmomanometer is further ensured.

The application discloses a test probe for electromagnetic valve and a test fixture, which comprises a probe, two limiting pieces are arranged on the probe, the two limiting pieces are spaced apart by a certain distance, a spring and a support are arranged between the probe positions of the two limiting pieces, and a micro probe is embedded in the position where the support contacts the probe; the micro probe is in sliding contact with the probe; the test probe for electromagnetic valve is slidably connected with the support as a wiring end and the probe as a movable part, in use, the wiring end is fixed on the shell of the test fixture, so that the problem that the wiring is prone to breakage is avoided; and the resistance of the probe is reduced through the sliding connection, so that the problem that the measurement result is inaccurate due to the large resistance of the probe is avoided.

The utility model discloses a kind of measuring devices for casting mechanical property tensile test, including base, first support, second support and scale, first baffle is vertically provided in the left end of base, first support is provided on the base right side of first baffle, second support is slidably connected with in the right side of first support, third baffle is slidably connected with in the right side of second support, and top bolt is provided on third baffle, scale is provided in the right side of the top of first baffle, second displacement sleeve is slidably connected on scale, measuring rod is provided in the front end of second displacement sleeve. The utility model can effectively solve the problems existing in the conventional test bar elongation test method, such as inaccurate gauge length measurement, unstable test bar placement, etc., significantly improve the accuracy of test bar gauge length measurement and elongation calculation, while reducing the influence of human factors on measurement results, improve the test efficiency, reduce the labor cost and operation time.

This utility model discloses a liquid dispensing device and a cleaning equipment, belonging to the technical field of cleaning equipment. The liquid dispensing device includes a liquid bottle; a cover plate, with the liquid bottle inverted on the cover plate; a storage tank connected to the cover plate, the storage tank having a second chamber; a first sealing element fitted around the outer periphery of the cover plate, abutting against the liquid bottle; a second sealing element fitted around the outer periphery of the cover plate, abutting against the storage tank; the first and second sealing elements form a closed chamber with the liquid bottle, cover plate, and storage tank; a detection element connected to the second chamber via a connecting assembly, the detection element obtaining the liquid level in the liquid bottle by monitoring the gas pressure in the second chamber, the connecting assembly including a diaphragm that prevents liquid from entering the detection element. This device can prevent liquid from overflowing from the liquid bottle due to increased external temperature, thus avoiding dirt accumulation on the dispensing device platform. Simultaneously, it can monitor the liquid level in the bottle in real time, enabling accurate dispensing and ensuring the cleaning effect of the cleaning equipment.

This invention relates to a high-current-weighted current transformer with phase difference compensation. It comprises a housing, within which a current-carrying frame is housed. A ring-shaped magnetic core is fitted onto the current-carrying frame, and the ring-shaped magnetic core has a notch. A coil is wrapped around the ring-shaped magnetic core. The current-carrying frame passes through the ring-shaped magnetic core and connects to an external current source. The housing also contains a current acquisition circuit board and a pin holder. An interface pin is provided on the pin holder. One end of the interface pin is connected to the output interface of the current acquisition circuit board via a phase difference compensation module, and the other end is connected to an interface of an external testing device. This invention incorporates a thermistor. When an abnormal temperature occurs, the control mechanism of the current acquisition circuit board will activate, ensuring the safe operation of the current transformer. The phase difference compensation circuit avoids inaccurate measurement due to current disturbances, improving the measurement accuracy of the current transformer.