41results about How to "Performance testing is accurate" patented technology

The invention relates to a testing system of set-top box, which comprises input unit, operation command processor, remote-control signal sender, and detector. Wherein, the invention also provides a relative testing method which comprises that receiving the command at first format; converting said command into second format; using serial communication interface to send the signal at second format to the sender; the sender sends the remote-control signal to the set-top box to respond the signal at second format. The invention has high accuracy.

The invention provides an intelligent substation secondary loop comprehensive performance test system and a working method thereof. The transmission delay of a secondary loop of an intelligent substation is mainly composed of several parts: sampling signal pre-processing delay of an electronic transformer, processing delay of an integrator, synchronous operation and data processing operation delayof a merging unit and transmission delay of a switching network and the like. The invention designs a high-precision timing synchronization implementation method, hardware design of a message acquisition module, a switch value acquisition module and a control system for the intelligent substation secondary loop comprehensive performance test. The system realizes accurate test of intelligent substation secondary loop comprehensive performance and provides technical support for asynchronous error check of the electronic transformer.

The invention provides an air conditioner thermal comfort degree performance testing system and a testing method thereof. The testing system comprises an air conditioner used for testing; a comfort degree tester used for testing indoor PMV and DR values; and a plurality of thermocouples, which are used for testing an indoor temperature, and are disposed on different positions in a room. The testing method comprises steps that S0, the thermocouples on the different positions are switched on, and are used to acquire the temperature values of the positions regularly, and then the mean value of the temperature values of the different positions is calculated, and then the air conditioner is switched on; S1, the various testing indexes of the thermal comfort degree are tested, and the various index values are calculated according to a preset scoring standard; S2, the scores of the various testing indexes are added together according to a preset weight, and then the testing value of the thermal comfort degree is calculated; S3, according to an evaluation standard, whether the thermal comfort degree performance of the air conditioner is qualified is determined. The multi-index comprehensive evaluation of the thermal comfort degree is carried out, and therefore the accurate air conditioner thermal comfort degree performance testing is realized.

The invention discloses a high-precision hydraulic buffer and an actuator dynamic and static test platform. A marble test bench, a guide rail sliding block connection plate A, a stator, a mover, a guide rail sliding block and a grating ruler are comprised; the left side of the marble test bench is provided with a voice coil motor; and the voice coil motor includes a stator and a mover. One end ofthe mover is provided with a mover connecting plate, and a side wall of the mover connecting plate is provided with a sliding block connecting plate. The two sides of a tested component are respectively connected by ball joints. The left side of the tested component is connected with the guide rail sliding block connecting plate A. The right side of the tested component is connected with a guide rail sliding block connecting plate B. The guide rail sliding block connecting plate B is connected with a pulling pressure sensor connecting piece. A pulling pressure sensor is connected with a load guide rail connecting plate installed on the left side of a load. The system of the invention adopts the voice coil motor as a servo driving device, and uses the grating ruler to test the relative displacement of the tested component. The invention is applied to dynamic and static testing of the buffer and the actuator, and can conveniently and quickly adjust the load form during testing, thus improving the convenience of testing and reducing the cost of testing.

The invention discloses a PCB solder mask ink performance test method. A plate is divided into twelve modules, several detecting working procedures which do not affect one another are concentrated onone of the certain modules, the ink thickness, the hardness, the adhesion, chemical resistance and the like are tested simultaneously, the twelve modules are utilized to conduct experiment data collection and experiment operation, thus the testing item in one-time testing is more comprehensive, performance testing of the solder mask ink is more accurate, and the situation that abnormal badness occurs in batch use, and reassessment and reconfirmation are needed is avoided.

The invention discloses an optical fiber channel protocol data generation method having the interactive capacity. A transmitting queue is arranged for each transmitting port, and storage space is allocated for each transmitting queue; one transmitting queue is selected, and the required frame data, primitives, wait conditions or delay are inserted; the transmitting mode of the transmitting queue is set; after transmitting is started, the data in the transmitting queue are written in a DDR corresponding buffer area in turn, an FPGA reads the transmitting data in the DDR, the transmitting type is judged according to control words, and the received protocol data are waited to meet the conditions and then the subsequent data are transmitted if the judgment result indicates the wait conditions; transmitting is performed after waiting the specific time if the judgment result indicates delay; and the protocol data are packaged according to the standard frame format and then transmitted if the judgment result indicates the primitives or the frame data. The method has the feedback capacity, the specific type of frames, primitives or errors can be waited to be received and then the subsequent data are transmitted or the data are transmitted after waiting for a period of time.

The invention discloses a hydraulic oil cylinder performance test device and a test method thereof. The device comprises a test board, an outer barrel, an inner barrel, a clamping mechanism and a vibration exciter, wherein the test board is arranged in a turnover mode around a horizontal axis and is driven by a turnover mechanism; the outer barrel is mounted on the test board, and the rotation axis of the outer barrel is horizontal and is perpendicular to the turnover axis of the test board; the inner barrel is coaxial with the outer barrel, is rotationally mounted in an inner cavity of the outer barrel around the axis, and is driven by a rotating component; the clamping mechanism is arranged in an inner cavity of the inner barrel and used for clamping the periphery of a middle section of a cylinder body of a hydraulic oil cylinder; and the vibration exciter is mounted on the test board. The invention further provides a test method using the device. According to the hydraulic oil cylinder performance test device and the test method thereof, air in the cylinder body is rapidly eliminated before the hydraulic cylinder is tested, so that normal proceeding of follow-up performance testing is guaranteed.

The invention discloses a ground evaluation system and method for performance indexes of a helium compressor of a stratospheric airship. The system comprises a capsule body assembly, a connecting assembly and a measurement and control assembly, wherein the capsule body assembly comprises an outer capsule body and an inner capsule body, the inner capsule body and the outer capsule body are each of a cylindrical structure and are oppositely arranged, the connecting assembly comprises the helium compressor, a circulating pipeline, a gas inlet pipeline and a gas outlet pipeline, the helium compressor is arranged outside the outer capsule body and the inner capsule body and is located between the outer capsule body and the inner capsule body, one end of the gas inlet pipeline communicates with the outer capsule body, the other end of the gas inlet pipeline communicates with a gas inlet of the helium compressor, one end of the gas outlet pipeline communicates with the inner capsule body, the other end of the gas outlet pipeline communicates with a gas outlet of the helium compressor, the two ends of the circulating pipeline communicate with the outer capsule body and the inner capsule body correspondingly, a helium electronic control valve is arranged on the circulating pipeline and is close to the outer capsule body, and the measurement and control assembly is arranged outside the outer capsule body and the inner capsule body, is electrically connected to the helium compressor and the helium electronic control valve and is used for controlling the helium compressor and the helium electronic control valve.

The invention discloses a device for motorcycle engine test positioning. A backing plate (10) is arranged between a bottom plate (2) and a base (1), the bottom plate (2) is connected with the backing plate (10) through two front bolts and two rear bolts, a vertical plate (3) is fixed at the rear end of the bottom plate (2), two rubber blocks (P) which are at the left and the right side by side are arranged on the top surface of the bottom plate (2), a fixed plate (4) is arranged at the front of the vertical plate (3), two first positioning pins (5) which are at an upper position and a lower position are inserted in the fixed plate (4), a movable plate (6) is arranged at the left side of the vertical plate (3), and two second positioning pins (7) are arranged at the front end of the movable plate (6). The operation of dismounting and mounting an engine is convenient and quick, the device also can ensure that the engine can be reliably positioned, so that an engine performance test is more accurate and testing efficiency is higher, the positions of positioning points can be adjusted according to the requirements of different engines, and therefore the application range is wide; the rubber blocks arranged side by side on the bottom plate can effectively prevent the engine from dropping and being injured.

The invention discloses a low-pressure large-flow overflow valve test system and a test method thereof.The test system comprises a circulation loop and a signal acquisition control module which are connected with a low-pressure large-flow overflow valve, and the circulation loop comprises a main path oil pumping unit, a test unit, an oil return unit and a temperature control module which are sequentially connected; a transient response module is arranged in parallel with the test unit, the transient response module comprises a lifting valve, and the control end of the lifting valve is connected with a bypass oil pumping unit through an electromagnetic reversing valve. The test method comprises a pressure regulating range and pressure stability test, an internal leakage amount test, a pressure loss test, a steady-state pressure-flow characteristic test, a transient response test and a pressure regulating-torque regulating test of the low-pressure large-flow overflow valve. Optimization of the structure and the method is achieved, operation is stable and reliable, the device can be used for predelivery tests and type tests, and it can be guaranteed that performance tests of low-pressure large-flow overflow valves are accurate and correct.

The invention provides a meter performance test system, which comprises an extraction device, at least one controllable valve, and a control cabinet; an inlet of the extraction device is connected with an oil tank and an outlet is connected with the oil tank through at least one meter, and the extraction device is used for extracting liquid stored in the oil tank and pressurizing the liquid to enable the liquid to flow through each meter and then be transmitted back to the oil tank; at least one controllable valve is arranged at the outlet of one meter; the control cabinet is connected with the extraction device and is used for controlling the extraction device to start to extract liquid according to an externally input starting signal and transmitting the extracted liquid to each meter; the control cabinet is also electrically connected with each controllable valve, and the control cabinet is used for changing the on-off state of each controllable valve according to a set time length, so that the repeated hydraulic impact of the liquid on each meter is realized, and each meter is tested.

The invention discloses an online detection system for single-capped electrodeless fluorescent lamps, which is characterized in that a test area of a light source aging operating device is provided with a positioning device, and when a detected light source moves to a position at which the positioning device is arranged, the positioning device emits positioning signals; the online detection system is provided with an online testing system for responding to the positioning signals emitted by the positioning device, and a data processing system; in the test area of the light source aging operating device, the online testing system carries out signal acquisition on the detected light source so as to obtain an acquisition signal, and the data processing system carries out data conversion and processing on the acquisition signal; and the data processing system provides an online test control signal. According to the invention, an online test is performed in the aging link of a single-capped electrodeless fluorescent lamp so as to obtain the performance parameters and matching effects of products in real time, thereby facilitating the quality management and control on products.

The invention discloses a pneumatic clamp for clamping a motorcycle engine to carry out power measurement. A base plate (2) is connected with a backing plate (10) through bolts; rubber blocks (P) are arranged on the upper plate surface of the base plate (2); a first locating pin (5) is arranged on a fixed plate (4) in a penetrating way; two second locating pins (7) are arranged on the front end of a movable plate (6); a piston rod of an air cylinder (9) stretches out leftwards and is connected with the rear end of the movable plate (6); a cross beam (A) is arranged above a vertical plate (3); the cross section of the cross beam (A) is in an 'L' shape; the cross beam (A) is formed by vertical slices and horizontal slices. The pneumatic clamp for clamping the motorcycle engine to carry out power measurement is beneficial to arranging of electronic elements for testing, can ensure the reliability of locating of the engine, and enables the performance test of the engine to be more accurate; the rubber blocks are arranged on the base plate side by side, so that the phenomenon that the engine falls down and is damaged can be effectively prevented; the air cylinder for providing power is firmly arranged on the backing plate and is convenient to disassemble and assemble, and the installation position of the air cylinder can be adjusted favorably.

The invention belongs to the technical field of printing, solves the problems that a printing device is small in tested liquid volume range and large in limitation, and provides a printing device for testing liquid performance through delay switching between nozzles and a control method of the printing device. The printing device is used for switching at least two spray heads with different spray liquid amount ranges to spray liquid according to a preset time sequence so as to test liquid performance, the printing device comprises at least two spray head driving plates, the number of the spray head driving plates is consistent with the types of the spray heads, and each spray head driving plate is used for correspondingly driving one spray head to spray liquid; a main control board; one end of the time-delay switching circuit is connected with the main control board, and the other end of the time-delay switching circuit is connected with one of the at least two nozzle driving boards. The device has the advantages that two or more nozzles can be driven at the same time, the spraying volume range is wide, the applicability is high, and liquid performance testing is accurate.