35results about How to "Flexible and convenient testing" patented technology

The invention discloses a test system and method of a data-driven rail traffic vehicle-mounted operation control system, belonging to the technical field of rail traffic signal system test. The test system comprises a test management module, a test execution module, a test interface adaption module and a test analysis and assessment module and is connected with a tested vehicle-mounted operation control system by the test interface adaption module, wherein the test management module finishes the functions of storing, modifying and configuring test data, the test execution module finishes the function of executing the test data, the test analysis and assessment module finishes the functions of recording, treating, analyzing and assessing the test data, and the test interface adaption module finishes the functions of adapting to the interface characteristics of real tested vehicle-mounted equipment and interacting practical information with the tested equipment. The invention can be conveniently used for various types of tests on the vehicle-mounted equipment of a train operation control system, wherein the tests comprise function test, interconnection test and the like; and in addition, the invention has good popularity and flexibility.

The invention discloses a winding machinery state diagnosis method and system based on transformer noise. The winding machinery state diagnosis method comprises steps of collecting noise signals and current signals of a transformer at two different operation times, calculating a transfer function according to an auto-power spectrum of noise signals and the current signals of the transformer at the two different times, selecting an appointed frequency band to calculate amplitude frequency characteristic correlation coefficients of the transfer function at two different operation times according to the transfer functions of the two different operation times, performing matching on the amplitude frequency characteristic correlation coefficients and a preset diagnosis rule table, and outputting a matched winding machinery state diagnosis result, wherein the diagnosis rule table comprises a value interval of the amplitude frequency characteristic correlation coefficients and a corresponding winding machinery state diagnosis result. The winding machinery state diagnosis based on the transformer noise comprises a program module corresponding to the winding machinery state diagnosis method. The winding machinery state diagnosis method and system of the invention do not contact with live equipment, have high safety, do not affect normal operation of the equipment and are easy and flexible in testing.

The invention discloses a VPX digital signal test device comprising a shell, transfer printed boards, and a signal transfer board. The transfer printed boards are inserted into printed board slots of the shell in sequence. The signal transfer board is inserted into a Vita plug connector of one transfer printed board through a Vita socket connector. A backplane signal is led out to the exterior of a VPX case for test through the transfer printed boards. Different transfer printed boards are connected with all signal test points. Radio frequency signals are transmitted to external test equipment through a radio frequency connector of the signal transfer board. The shell of the device is designed according to a Vita standard sub board module, and can be flexibly inserted into the VPX case. The VPX digital signal test device has the advantages of no need to disassemble the case, flexible and convenient test, high versatility, cost saving, and higher efficiency.

The geological radar measurement complex ground deposit deformation measurement comprises the selection and tin foil with relatively big dielectric constant difference with the bank land to be tested, setting a fixed point at the tin foil area with the deformation of the point known or being able to be measured, connecting the tin foil with the structural material that usually uses pile for treatment with deposition small or zero, to get the deposit of the ground combining with the geological radar testing material, when there are structural objects close to the observation area. When the observation area is linear, it can set 1-2 deposit observation point at the local route together with the tin material, using level gage controlling the deformation of the point, combining with the general analysis of the complex ground deposit material to calculate the precise deformation of the ground.

The invention relates to an auxiliary measuring rod for converter valve conduction tests. The auxiliary measuring rod is applied to a situation in which a test instrument performs conduction tests on a plurality of thyristors in a converter valve. The auxiliary measuring rod comprises a rod head, a rod body and a handle which are successively connected with one another; the rod head is of a hollow U-shaped structure; the rod body is a hollow telescopic rod; the interior of the telescopic rod is communicated with the interior of the rod head; two top ends of the rod head are respectively provided with a contact end; and the contact ends respectively pass through the interiors of the rod head and the telescopic rod sequentially through wires so as to be connected with the test instrument. Compared with the prior art, the auxiliary measuring rod of the invention has the advantages of convenient and flexible testing, simple structure, convenient operation as well as being safe and reliable.

The invention provides a low-voltage load test method and device. The method comprises the following steps of selecting an instation power supply as a benchmark, powering a single-phase riser instrument and a single-phase voltage regulator by utilizing the power supply, primarily increasing the current of a CT of a device to be tested by utilizing the single-phase riser instrument, and secondarily boosting the voltage of a PT of the device to be tested by utilizing the single-phase voltage regulator; acquiring the phase of the input current and the output current of the single-phase riser instrument, calculating the phase difference, and judging whether the phase difference stays within the predetermined range; acquiring the phase of the input voltage and the phase of the output voltage of the single-phase voltage regulator if the phase difference stays in the predetermined range, calculating the phase difference, and judging the phase differences stays in a predetermined range; switching the voltage to a relay if the phase difference of the input voltage and the output voltage stays in the predetermined range, calculating the phase difference between the voltage and the current of the phase of the device to be tested, and determining whether the polarity of a current loop and a voltage loop is correct or not according to the phase difference. The test method is flexible, convenient, strong in practicability, high in working efficiency and capable of guaranteeing the safety of the system.

The invention discloses a three-axis clamping device applicable to a high-temperature and low-temperature cycle and a medical CT (Computerized Tomography) machine. The three-axis clamping device comprises an outer barrel body, and further comprises a first oil injection part and a second oil injection part, wherein a barrel-shaped first inner connection part and a barrel-shaped second inner connection part sleeves oil outlet ends of the first oil injection part and the second oil injection part respectively; a fluorine rubber sleeve is located in the outer barrel body and two ends sleeve the first inner connection part and the second inner connection part respectively; a test sample, and a first clamping piston and a second clamping piston which are located at two sides of the test sampleare arranged in the fluorine rubber sleeve; the outer barrel body is provide with an oil/gas connector. The three-axis clamping device disclosed by the invention is simple in structure and compact instructure; a test sample loading process is simple and has high operability; the three-axis clamping device is small in size and can be put into the medical CT machine to carry out computerized tomography; the fluorine rubber sleeve is used as a rock sample packaging material and the material has good sealing performance and a high pressure-bearing capability under a low-temperature condition so that the three-axis clamping device is applicable to high-temperature and low-temperature cycle testing conditions.

A method for testing vertical direction resistance of a fuel cell catalyst layer comprises the steps of: separately testing a gas diffusion layer resistance and a gas diffusion electrode resistance byan electrochemical workstation, and subtracting the gas diffusion layer resistance from the gas diffusion electrode resistance to obtain a vertical resistance of the catalyst layer. The beneficial effects are as follows: the test conditions are the same as the membrane electrode test environment, the data is real and reliable; the test environment is adjustable, and for different demand tests, the test is flexible and rapid; the same clamp test is used without the errors caused by different clamps; and moreover, the data can be applied to the simulation model or the theoretical calculation tohave an important meaning for the positive development of the membrane electrode.

The invention discloses an armature insulation and voltage resistance testing device, which comprises an insulation and voltage resistance tester, an upper computer, a voltage switching device and an armature voltage applying device, and is used for detecting the voltage resistance performance and the insulation performance among all commutator segments of an armature. The armature insulation and voltage resistance testing device is simple in control process, does not leave a trace on a commutator, does not damage a probe, and can test the insulation and voltage resistance performance between any commutator segments flexibly, conveniently and efficiently.

The invention discloses a detachable modular VPX signal test fixture. The detachable modular VPX signal test fixture comprises a front insertion module and a rear export module, the rear export moduleand daughter boards are the same in appearance, and the rear export module is provided with a backboard connector; and single-ended, differential, microwave or power supply VPX connectors with different functions are arranged in the front insertion module, and the sliding rail of the front insertion module is inserted into a slot of the rear export module, so that the VPX connector is electrically connected with the backboard connector. The rear export module is inserted into a VPX case, the backboard connector of the rear export module is electrically connected with the backboard of the VPXcase, signals are led out to a test instrument through the VPX connector, and then signal characteristics of connection between the backboard and the daughter boards or between the daughter boards inthe case can be detected. The VPX connectors with different functions such as single-ended, differential, microwave or power supply are arranged in the front insertion module, so that multiple functions of the VPX case can be tested.

The invention provides a new-energy high-low voltage ride-through testing device, and the device is suitable for the high-voltage and low-voltage ride-through capabilities. The device is connected in series between tested equipment and a power grid, and comprises an input circuit breaker connected with a power grid. The input circuit breaker, a voltage adjustment unit and an output circuit breaker are connected sequentially. Moreover, the output circuit breaker is connected with the tested equipment, and two ends of the voltage adjustment unit are in parallel connection with a bypass circuit breaker. The device is advantageous in that the device can truly simulate an on-site fault, is suitable for the testing of a high-voltage system, is also suitable for the testing of a low-voltage testing, is flexible testing, and is convenient to install; the device achieves the fault simulation of different voltage levels through controlling a thyristor valve block to achieve the high-speed switching of a transformer tap, is flexible and convenient in testing, is high in reliability, and achieves the one-time recovery or stepped recovery of voltages according to the requirements; the device employs a modularized design, is convenient to assemble, and is simple in testing.