63results about How to "The test is convenient and accurate" patented technology

The invention discloses a supplementary coil device of high-temperature superconductive magnet detection, which is composed of outer coil [1], inner coil [2] and auxiliary element, wherein the outer coil [1] is main coil with little number of turn and inductance L1, whose thruflow ability is more than marginal current of detected high-temperature superconductive magnet [14]; the inner coil [2] is auxiliary coil with much number of turn and inductance L2 to be located in the center hole of main coil [1] through lower fixing rod [7] and upper fixing rod [8], which limits upper fixing rod [8] and lower fixing rod [7] on the intersecting line of main coil [1] and auxiliary [2] through limit bearing [9 and 10]; the upper fixing rod [8], lower fixing rod [7] and auxiliary coil [2] form an integral; the adjusting handle on the upper fixing rod [8] is rotated to anchor auxiliary [2] to rotate within +-180 deg scale continuously; multiple taps are led out among auxiliary coil [2]. The invention is fit for detecting high-temperature superconductive magnet and marginal current of strip and AC consumption properties, which is also fit for detecting low-temperature superconductive magnet and marginal current of strip and AC consumption properties.

The invention provides a method for debugging the driving waveform of a three-color electronic paper module, and the method herein has the characteristics of excellent universality, and excellent comparison and display effects. The method is characterized in that the method includes the following steps: 1. determining master driving frames: driving the three-color electronic paper module by usingblack/white/red picture standard test waveforms, and separately reading the black, white and red optical values of a test picture under three kinds of standard test waveforms by using an optical tester, separately comparing the black, white and red optical values with a standard black L*value, a standard white L* value, and a standard red L* value and a* value, obtaining a standard test waveform that meets optical requirements and obtaining a black/white/red master driving frame of the three-color electronic paper module; 2. determining DC balance frames: separately based on the black master driving frame, the white master driving frame and the red master driving frame, determining the DC balance frames corresponding to the black master driving frame, the white master driving frame and thered master driving frame; and 3. determining driving waveforms which include the DC balance frames that perform first driving and the black master driving frame, the white master driving frame and the red master driving frame that perform follow-up driving.

A semiconductor integrated circuit (1) includes first, second and second functional blocks (10, 20 and 30). The first, second and second functional blocks (10, 20 and 30) are coupled together via an inter-block signal line (2). The first functional block (10) includes: a logic circuit (11); a test data output circuit (12), which operates during testing and outputs a predetermined test data pattern; a testing standby circuit (14), which is connected between a selector (13) and an external bidirectional pin and makes the functional block enter a standby state during testing; a tristate buffer (15) that is made to have a high impedance by the testing standby circuit (14); and a decision result output circuit (16), which receives the test data pattern from the second functional block, compares the received test data pattern to an expected value stored therein, and outputs a decision result to a decision result signal line (5).

The invention relates to an intelligent testing device for soil mass layered permeability characteristic analysis. The intelligent testing device is characterized by comprising a soil containing unit, a water supply device and an intelligent testing unit; the soil containing unit comprises a cylindrical glass barrel, water seepage valves, a cylindrical base, a water seepage pipe and a metal pore plate; the water supply unit comprises a constant-temperature water pump, a water pipe and a sprayer which are sequentially connected. The intelligent testing unit comprises a water content sensor, a water seepage quantity sensor and a water pressure sensor which are connected with a computer through signal receivers. The water supply unit is located over the soil containing unit. Multiple soil mass layered structures with the same height are arranged in the cylindrical glass barrel from bottom to top. A water content sensor, a water seepage quantity sensor and a water pressure sensor are arranged on the inner side wall of each layered structure. The soil mass layered permeability characteristic status can be easily, conveniently and precisely tested, the positioning precision of a system, a measuring method and an evaluation method are provided, and the intelligent testing device is suitable for replacing existing products in the field.

The invention provides an ejection additional load simulation test system, and relates to a missile or torpedo launcher. The ejection additional load simulation test system comprises an outer frame which is internally provided with a guide cylinder, a sliding cylinder and a flexible base, wherein the sliding cylinder is arranged above the flexible base; the guide cylinder is sheathed in the sliding cylinder; a tension sensor is arranged between the guide cylinder and the sliding cylinder; pressure is applied into a closed inner cavity formed by the guide cylinder, the sliding cylinder and the flexible base, so that the flexible base is expanded and is contacted with the ground; an ejection additional load can be tested by the tension sensor. The invention aims at providing the ejection additional load simulation test system which is simple in structure, low in cost and simple and convenient to operate and is capable of conveniently and accurately testing the additional load, so that the structure of the launcher can be optimized, the load of a launch platform can be reduced during ejection, and ejection safety and stability are improved.

The invention provides a cycle testing device and a testing method for a motor positive and negative rotation power module. The testing device comprises a testing power source input module, a voltage reducing, rectification and voltage stabilization module, a peripheral interface controller (PIC), and a signal switching control module, wherein the voltage of the power source input module provides working voltage for the PIC and the signal switching control module after the voltage reducing, rectification and voltage stabilization module, the PIC is connected with the signal switching control module which is connected with the motor positive and negative rotation power module to be tested, and the PIC is utilized to control the regular switch of motor positive and negative input signals. According to the cycle testing device and the testing method for the motor positive and negative rotation power module, the testing process is automatic without manual operation to switch testing input signals; the cycle testing mode can be programmed, and the working mode is set by key pressing, the testing requirements of different motor loads are more adapted; and a liquid crystal display (LCD) can be used to display the working mode so that accurate and convenient setting of working mode and modularization of testing mode are facilitated.

The invention discloses a production test system of large-scale short-distance wireless data transmission equipment, comprising radio-frequency performance testing equipment and at least one short-distance wireless data transmission equipment to be tested; the radio-frequency performance testing equipment comprises a microprocessor radio-frequency unit, and an RS232 serial communication unit and a matching radio-frequency receiving and transmitting circuit which are connected with the microprocessor radio-frequency unit; the microprocessor radio-frequency unit realizes data communication through the RS232 serial communication unit and a main controller, transmits and receives radio-frequency signals through the matching radio-frequency receiving and transmitting circuit; and the short-distance wireless data transmission equipment to be tested comprises a microprocessor radio-frequency module and a matching radio-frequency receiving and transmitting module which is connected with the microprocessor radio-frequency module, wherein the microprocessor radio-frequency module receives and transmits radio-frequency signals through the matching radio-frequency module. The production test system of the large-scale short-distance wireless data transmission equipment not only conveniently and accurately tests the radio-frequency pass rate of the short-distance wireless data transmission equipment, but also reduces the time and cost which are required by the production test.

The invention provides a testing device for an ignition distance of an aerosol spray, which comprises a control component, a spray generating component and a combustion component. The distance between the spray generating component and the combustion component is controlled by the control component; the spray generating component is used for controlling the spraying of the spray product; and the combustion component can spray the spray out of the product within a certain distance so as to generate spray for continuous combustion, so that the ignition distance of the aerosol spray is determined. The testing device is used for testing the ignition distance of the ignitable aerosol spray. Therefore, the safety of aerosol sprays and other dangerous chemicals in production, management and test is guaranteed.

The invention discloses a seawater circulating system which has simple structure, easy operation and low test cost, can dynamically test the influence of seawater flow on the adhesion amount of fouling organisms and comprehensively and accurately evaluate the surface properties of anti-fouling materials. The seawater circulating system comprises a seawater container (1), a seawater circulating device (2), a flow-stabilizing device (3) and a test device (4), wherein the flow-stabilizing device (3) is provided with a box body (5); the box body (5) is provided with a water flow inlet (6) and a water flow outlet (7); the box body (5) is internally provided with a flow-stabilizing plate (8) which is perpendicular to a water flow direction; drainage holes (9) are uniformly distributed on the flow-stabilizing plate (8); the test device (4) is provided with an upper baffle plate (10), a lower baffle plate (11) and two side plates (12), wherein the upper baffle plate (10), the lower baffle plate (11) and the two side plates (12) form a water flow channel (13); and sample plate installation holes (14) are uniformly arranged on the upper baffle plate (10) and the lower baffle plate (11).

The invention provides an antenna test method and device and a computer readable storage medium, and the method comprises the steps: controlling a radio frequency transceiver chip to generate a test signal, adjusting the power of the test signal, and obtaining a first test signal; transmitting the first test signal through a radio frequency interface, so that the to-be-tested terminal receives the first test signal through each antenna; receiving a second test signal transmitted by the to-be-tested terminal through each antenna based on the first test signal through the radio frequency interface; further detecting whether the signal intensity of each received second test signal is within a preset signal intensity range, and obtaining an antenna radiation test result of the to-be-tested terminal. The antenna radiation performance of the to-be-tested terminal is tested through the antenna test equipment, and the radiation performance of each antenna of the to-be-tested terminal can be conveniently and accurately detected.

The invention relates to the field of fresh concrete whole stability and evenness testing, specifically relates to a fresh concrete segregation resistance testing device and a method and aims at solving the defects that an existing fresh concrete stability and evenness testing method may seriously affect concrete structure bearing capacity and has poor accuracy and rigorous requirements for testing environment conditions. The fresh concrete segregation resistance testing device comprises four lateral walls, a top cover and a bottom plate, wherein at least one electrode plate is arranged at thepreset height position of the inner side of the first lateral wall, and an electrode plate of the same size as the electrode plate on the first lateral wall is arranged at the same height position ofthe second lateral wall opposite to the first lateral wall; one end of a wire is connected with the electrode plate, and the other end of the wire can serve as a fixed end of a double-pole multiple-throw switch; the wires guided out from the electrode plates at the same height positions of the lateral walls correspond to the fixed end and can be chosen by a movable end at the same time; the movable end of the double-pole multiple-throw switch is electrically connected with a resistance test instrument. The fresh concrete segregation resistance testing device disclosed by the invention is suitable for fresh concrete segregation resistance testing.

The invention discloses an injection molding machine testing mold. The mold comprises a mold main body, wherein a small oil cavity and a large oil cavity are arranged on the two sides inside the mold main body respectively, mold pushing cylinders are arranged inside the large oil cavity, an ejector pin cylinder is arranged inside the small oil cavity, an ejector pin piston of the ejector pin cylinder is in butt-joint with the head part of a screw, the mold pushing cylinders are communicated with the ejector pin cylinder through passages and are communicated with an oil inlet passage, and a one-way valve is arranged in the oil inlet passage. The invention also provides an injection molding machine testing device comprising the injection molding machine testing mold and the screw of an injection mechanism, wherein the ejector pin piston of the ejector pin cylinder and the head part of the screw are in butt-joint, and the oil inlet passage of the injection molding machine testing mold is connected with an original oil liquid system of the injection molding machine. The testing device can simulate the strain situation of a mold locking mechanism and especially the strain situations of a molding plate and a draw bar under extreme conditions, and can accurately and conveniently test the fatigue resistances of the molding plate and the draw bar.

The invention discloses an automation testing device including a testboard, movable wheels are mounted on the two sides of the bottom of the testboard, a battery pack is installed in the middle of the inner cavity of the testboard, the left side of the upper end of the testboard is provided with a servo motor, the output end of the servo motor is connected with a moving seat via a screw rod, the right side of the upper end of the testboard is provided with a slide rail, the upper end of the moving seat is provided with a fixing device, the right side of the upper end of the testboard is provided with a support, and the lower end of the upper part of a support is provided with a test device. By setting the moving wheels as the universal locking wheels, the moving of the testboard is facilitated, the stable placing of the testboard can be realized by locking the moving wheels, and by setting the fixing device, the test object can be fixed and clamped, the moving wheels can drive the accurate positioning of the test object, the accurate testing of the test device is facilitated, and by setting the battery pack, when the power is failed, the device can run normally.

The invention relates to an electronic-grade glass cloth applied to the technical field of the electronic-grade glass fiber, an electronic-grade glass fiber yarn and a low-dielectric constant glass fiber yarn which are used for preparing the electronic-grade glass cloth, and a method for testing micro holes of glass yarns of circuit board sheets made from the electronic-grade glass fiber cloth. The test method comprises the following steps of: soaking the glass fiber cloth in the alcohol solution, wherein the refractive index of which is close to that of the glass fiber; completely replacing the gas on the surface of the glass fiber yarn by the alcohol solution and forming a transparent uniform solution; finally, observing the holes from a microscope. The test method is applicable to the field of the other insulation products reinforced by the electronic-grade glass fiber cloth, the electronic-grade glass fiber yarn and the low-dielectric constant glass fiber yarn.

The invention discloses a force bearing monitoring device for a sandy cobble stratum shield hob. The device comprises a transverse pressing block and a longitudinal pressing block. The longitudinal pressing block is fixedly connected on one side of the transverse pressing block. The top end of the transverse pressing block is provided with a transverse slide groove. A transverse slide block is slidably connected on the inner side of the transverse slide groove. A longitudinal slide groove is arranged at the top end of the longitudinal pressing block. A longitudinal slide block is slidably connected on the inner side of the longitudinal slide groove. A planar bearing pressing block is connected on the top ends of the longitudinal slide block and the transverse slide block. A first fastening screw rod is screwed on the top end of the transverse pressing block. A first fixing side plate is screwed on the outer side of the first fastening screw rod through threads. The planar bearing pressing block and the slope compressing block are arranged so that the problem that the force bearing monitoring device for the shield hob is not convenient to firmly fix the rotating shaft of the hob with different sizes when the force bearing monitoring device for the shield hob is used and the use effect of the force bearing monitoring device for the shield hob is affected can be avoided.

The invention discloses a motor transmission shaft torsion testing tool, which comprises a frame, wherein a transmission connecting shaft is vertically and rotatably arranged on the frame; a torsion sensor is arranged at the lower part of the frame; the torsion sensor is connected with a digital torsion display instrument through a signal wire; the lower end of the transmission connecting shaft is connected with the torsion sensor, and the upper end of the transmission connecting shaft extends out of the frame and is sleeved with a belleville spring gear assembly; and a rotating mechanism is arranged outside a gear of the belleville spring gear assembly and is used for driving the gear to rotate. The motor transmission shaft torsion testing tool disclosed by invention is simple in structure, and convenient and accurate in testing.