38results about How to "Avoid manual measurement errors" patented technology

The invention provides a flexible object thickness measuring device relating to a film thickness measuring technique. The invention provides a flexible object thickness measuring device with reliable measured data, convenience in use and high efficiency. The measuring device comprises a roller wheel and is structurally characterized in that a connecting rod is fixed at the lateral side of the bottom of a wheel stand between the shafts of the roller wheel; the connecting rod is fixed on a bearing inner ring of the bottom of a swivel body; the wheel stand is provided with a sensor connecting rack; the thread of the tail of the connecting rod is provided with a locating ring and a clamp nut; the locating ring is provided with a locating slot corresponding to a dowel on the swivel body; a support sleeve of a fixed shaft is arranged above the swivel body; the fixed shaft is provided with a weighing screw; and an opening is arranged at the position at which the support sleeve passes through the screw.

The invention relates to a system for automatically measuring the length of a drilling tool, which includes a base and a drilling tool transfer device on the base. The upper surface of the drilling tool transfer device has a V-shaped groove for placing the drilling tool. Small trolley, the front end of the small trolley is fixed with a reflective measurement plate, and the rear end of the base is equipped with a laser ranging head for emitting laser beams forward. There is a photoelectric sensor, the light beam of the photoelectric sensor is located above the V-shaped groove and perpendicular to the V-shaped groove, the laser distance measuring head and the photoelectric sensor are connected to a controller, and the controller controls the connection of the small pulley. The invention also provides a method for automatically measuring the length of the drilling tool. The solution solves the problem of low efficiency in measuring the length of the drilling tool by means of the prior art.

The invention discloses a measuring device for a parameter of a metal plate hole, relating to the technical field of measurement and being invented to measure the parameter of the metal plate hole precisely. The measuring device for the parameter of the metal plate hole comprises a limiting base, a slide block, a measuring head and a displacement sensor, wherein the limiting base is internally provided with a first hole and a second hole, both of which are mutually connected and coaxial; the aperture of the first hole is greater than that of the second hole; a lug boss which is contained in the first hole is arranged at the sidewall of the top part of the slide block; the sidewall below the lug boss of the slide block is matched with the inner wall of the second hole in a sliding manner; the measuring head with a round cross section is fixed at the bottom of the slide block; the intersecting line of the lengthways section of the measuring head and the side surface of the measuring head is a beeline; the included angle between the intersecting line and the bottom of the measuring head is less than or equal to 90 degrees, but grater than 0 degree; ad the displacement sensor is used for detecting the displacement of the slide block from a starting position to a measured position. The measuring device for the parameter of the metal plate hole, disclosed by the invention, is used for measuring the parameter of the metal plate hole.

The invention relates to a system for detecting the connectivity of a bank cable and a method thereof. In the system, a primary test end carries out detection through a tested cable together with a secondary test end; the primary test end and the secondary test end respectively comprises a voltage comparator, a test resistor and a singlechip; the singlechip at the primary end is connected to one end of one core wire of the cable through the test resistor, and the other end of the core wire is connected to the singlechip of the secondary end through the test resistor; the ends which are connected with the core wire of the cable, of the test resistances of the primary end and the secondary end are respectively connected with one voltage comparator; the output end of each voltage comparator is connected to the singlechip; when in test, the singlechip at the primary end respectively outputs high level to one core wire of the tested cable and low level to the other core wires of the testedcable, the current passes through the tested resistance, the voltage comparator of each core wire compares the detected voltage value with the reference voltage to obtain a logical result, the logical result is respectively input to the singlechips at the primary end and the secondary end and is comprehensively analyzed so as to judge whether each core wire is in a normal state, a disconnection state, a misconnection state, a state of short-circuit with the ground or a state of short-circuit between conductors.