37 results about "Acoustic Noise Testing" patented technology

The application discloses a kind of automobile glass lifter assembly oiling load test device, it is related to automobile glass lifter assembly test technical field.The present application includes rack, the middle of the rack is provided with central quick interface, the top of rack is provided with test load, test load can exert load to glass support in automobile glass lifter assembly, the top of test load is provided with oiling mechanism, and oiling mechanism can be applied to sliding plate with lubricating oil;The inside of the rack is provided with ejection mechanism, and switching tool is installed on ejection mechanism.The present application adopts standardization main machine platform design, provides general power and measurement pedestal, and all measurement sensing and execution core are fixed to main machine, and are not affected by product model.Combining oiling procedure with test procedure, oiling mechanism does not need to be set in subsequent noise test shed, oiling and noise test are separated, reduce the influence of mechanism operation on noise, and cost is lower.

The invention provides a noise testing device and a testing system, and belongs to the technical field of automobile braking system testing. According to the noise testing device, a traditional mechanical elastic element is replaced by a closed load cavity and pressurized gas, and axial counter force is directly generated by compressing gas in the cavity when a transmission part stretches out, so that noise introduced by additional structure friction or spring oscillation is thoroughly eliminated while a simulated load is braked; according to the utility model, the noise detection module is arranged, so that a signal received by the noise detection module only comes from a product to be tested, the purity and reliability of a test result are remarkably improved, and by virtue of the characteristic that the gas pressure is continuously adjustable, the same device can be quickly adapted to different load requirements, the overall structure is simplified, and the maintenance and operation cost is reduced.

The utility model belongs to the technical field of noise testing, and discloses an installation jig which comprises an installation plate, a bottom plate and a vibration reduction assembly, the installation plate is provided with an installation hole, the bottom plate is arranged opposite to the installation hole and fixedly connected with the installation plate, the bottom plate is provided with an air passing channel, and the vibration reduction assembly is arranged in the air passing channel. A mounting space is defined by the bottom plate and the inner wall of the mounting hole; the vibration reduction assembly is arranged in the installation space and used for installing a fan and reducing vibration of the fan. The base frequency of the fan can be effectively reduced, and the noise test accuracy is improved.

The invention provides a height adjusting device of a range hood noise testing system, the range hood noise testing system comprises an adjusted cross beam, the height adjusting device comprises a signal receiving device, an actuator, a distance measuring device and a controller, the signal receiving device is used for receiving the preset height of a tested range hood; the actuator is connected with the adjusted cross beam; the distance measuring device is used for measuring the actual height of the adjusted cross beam; the controller is in communication connection with the signal receiving device, the actuator and the distance measuring device, and the controller is configured to generate a control instruction for controlling the actuator to move according to the preset height of the detected range hood and the actual height of the adjusted cross beam. And the actuator executes the control instruction to adjust the height of the adjusted cross beam to a target height corresponding to the preset height of the detected range hood. According to the invention, the height of the adjusted cross beam can be automatically adjusted.

The present invention provides a three-in-one detection device for lifting table legs, which belongs to the technical field of lifting table detection equipment, including: the frame is provided with a lower base, an upper base and a test drive mechanism that can drive the lifting table legs to perform lifting actions, the upper base is located above the lower base; the noise testing mechanism is used to collect noise data when the lifting table legs are lifted and lowered; the jitter testing mechanism is used to collect jitter data when the lifting table legs are lifted and lowered; a displacement testing mechanism, the displacement testing mechanism is installed on the upper base, and the displacement testing mechanism can push the raised lifting table legs with a preset thrust and collect their displacement data. The beneficial effects of the present invention are: the device can detect the lifting table legs individually, and the device has three detection functions, which can perform noise testing, jitter testing and displacement testing during the lifting process of the table legs, so the efficiency is very high, and the purpose of automatic detection of the table legs is quickly achieved.

The utility model relates to the technical field of noise testing equipment, in particular to noise testing equipment convenient for positioning a wall breaking machine, which mainly comprises an equipment main body, a sound insulation cover arranged on the equipment main body, a detector arranged on the equipment main body, a mounting groove arranged on the equipment main body, a wall breaking machine main body arranged on the mounting groove, and a positioning assembly arranged on the equipment main body, the positioning assembly is arranged on the mounting groove and comprises a rotating shaft arranged on the mounting groove. According to the noise testing equipment facilitating positioning of the wall breaking machine, the wall breaking machine body is directly placed in the mounting groove, so that pre-positioning of the wall breaking machine body can be achieved, a connecting plate can be driven to rotate by 90 degrees through the elastic force of a first torsional spring, and therefore a silica gel pad can be matched with the connecting plate; the wall breaking machine main body is fixed in the mounting groove, so that the wall breaking machine main body can be quickly positioned, the wall breaking machine main body can be effectively prevented from shaking in a test, and a detection result is more accurate.

The utility model belongs to the field of car, concretely relates to a new energy vehicle exhaust system structure noise test and objective evaluation device. Noise testing device includes data acquisition system, vibration sensor, microphone, force hammer, test platform and shielded cable connection line, noise objective evaluation device, including data processing unit, matrix operation unit, sound pressure superposition unit and evaluation unit. The utility model has the advantages of simple test equipment, wider test range, more robust test data and more real test results.

The invention discloses an in-vehicle noise evaluation and prediction implementation method, device, equipment and medium, and relates to the technical field of vehicle application, the method comprises the following steps: carrying out in-vehicle noise test on a target vehicle to obtain in-vehicle noise spectrum data, and obtaining a subjective evaluation result based on a subjective evaluation mode; carrying out frequency band division on the in-vehicle noise spectrum data, and labeling by adopting a subjective evaluation result corresponding to the in-vehicle noise spectrum data to obtain a data set so as to realize construction of a training set and a verification set; training the constructed deep learning network model by using the training set, and verifying the trained deep learning network model by using the verification set; and according to the verification result, based on a deep learning network model, performing subjective evaluation result prediction of the in-vehicle noise, or optimizing frequency band division of the in-vehicle noise spectrum data to obtain a training set again, and training the deep learning network model again. According to the invention, accurate prediction of subjective evaluation of the in-vehicle noise can be realized.

The utility model relates to noise test equipment, which comprises a test box, a bearing table and a noise detection assembly, the bearing table is arranged in the test box, and a clamping station for fixing a seat massage structure is formed on the bearing table; the noise detection assembly is arranged in the test box, and the noise detection assembly is provided with a pickup end used for receiving a sound signal; the seat massage structure is placed on the bearing table, the seat massage structure is started, the noise detection assembly can detect noise generated when the seat massage structure works, and therefore whether the operation noise of the seat massage structure meets the requirement or not is judged.

The invention relates to the field of motor noise testing, in particular to a motor concentricity or eccentricity noise testing device which comprises a tool table, a first supporting table, a second supporting table, a magnetic powder brake arranged on the first supporting table and a sensor device arranged on the second supporting table. The magnetic powder brake and the sensor device are matched with a transmission shaft; the first supporting frame is fixed to the workbench, a preset distance is formed between the first supporting frame and the second supporting table, the first supporting frame is provided with a connecting hole, the transmission shaft is fixed to the tool table, one end of the transmission shaft penetrates through the connecting hole and is matched with the sensor device, and the other end of the transmission shaft extends in the direction away from the connecting hole and is matched with a flexible coupler; and a mobile platform. According to the invention, the noise test under the motor concentricity or eccentricity can be realized by effectively utilizing the structure configuration of the motor.

The present invention relates to the technical field of mechanical detection, and particularly relates to a noise testing system. The noise testing system includes an equipment bracket, a noise testing device, a main conveying component, a support frame, and an auxiliary conveying component. A speed sensor and a noise measurement unit are provided on the equipment bracket; the noise testing device is communicatively connected to the speed sensor and the noise measurement unit; the main conveying component is used to carry a floor cleaning robot; the support frame is used to support the main conveying component, and the auxiliary conveying component is in contact with the main conveying component. By setting the main conveying component, the floor cleaning robot can be kept within the equipment bracket when moving, the noise testing device is used to conduct noise testing on the floor cleaning robot, and at the same time, the support frame supports the floor cleaning robot on the main conveying component, and the auxiliary conveying component assists in driving the main conveying component to start or convey. Thus, the floor cleaning robot moves to a preset position and completes noise detection at the preset position, improving the accuracy of noise testing for the floor cleaning robot.

The invention discloses an electric air outlet actuator noise testing tool and method, and the tool comprises a feeding tool, a noise testing mechanism, and a telescoping driving mechanism which is disposed on the noise testing mechanism and is used for driving the feeding tool to horizontally move relative to the noise testing mechanism. The noise testing mechanism is used for carrying out noise testing on products in the feeding jig, and the telescopic driving mechanism is used for driving the feeding jig to move into the noise testing mechanism and remove the noise testing mechanism. The device has the advantages that the feeding jig can be used for testing whether a product runs normally or not, noise in the running process of the product is detected through the noise testing mechanism, the equipment integration degree is high, and the detection efficiency is improved.

The utility model discloses a capacitor noise test box which comprises a box body, a box door hinged to the side wall of the box body, an adjusting assembly arranged at the top of an inner cavity of the box body, a sound receiver arranged at the top of the inner cavity of the box body, and a plurality of vibration reduction assemblies arranged at the bottom of the box body. A motor is turned on to drive a rotating shaft to rotate, so that a winding roller drives a pull rope to wind, then the position of a moving seat is adjusted, noise attenuation data of the capacitor changing along with the distance is conveniently tested, an electric push rod is turned on to drive a connecting plate to move, a clamping block moves to clamp a gear, locking is facilitated, and the capacitor is prevented from sliding down; the box body drives the supporting block to vibrate, buffering and vibration reduction are facilitated through the vibration reduction assembly, and the influence of a sound source caused by external environment vibration on a noise test result is conveniently reduced.

The invention relates to the technical field of diaphragm air pumps, in particular to an integrated tool for quickly testing performance of a diaphragm air pump, which comprises a base, a test board is fixedly connected to the front side of the top of the base, and a sound insulation part is arranged on the rear side of the top of the base. The performance of the diaphragm air pump is rapidly and accurately tested, multiple functions of noise testing, air tightness testing, flow and negative pressure testing and the like are integrated in one tool through integrated design, the testing efficiency is greatly improved, meanwhile, the performance of the diaphragm air pump can be rapidly and accurately tested through motor driving and a gear and rack transmission mechanism, and the performance of the diaphragm air pump can be rapidly and accurately tested. Compared with the prior art, the diaphragm air pump is automatically clamped and fixed, complexity and errors of manual operation are avoided, in addition, interference of external noise on test results is effectively reduced due to the design of the sound insulation shell, accuracy and reliability of test data are ensured, and an operator can conveniently monitor and control the whole test process due to the addition of the control screen.

The utility model relates to the technical field of noise test equipment, concretely is a kind of wall breaking machine noise test equipment, it mainly includes test support frame, the top rear of test support frame is connected with lower cover body, and the top of lower cover body is provided with upper cover body, the inside of lower cover body is provided with wall breaking machine body, the protection assembly includes turnover air cylinder, and the inside of turnover air cylinder is provided with adhesive pad, the front end of turnover air cylinder is provided with elastic connecting rod, the positioning assembly includes fixed plate, and the side of fixed plate is provided with extrusion plate.The wall breaking machine noise test equipment of the application is rotatably connected between lower cover body and upper cover body by turnover air cylinder, the connecting place is sealed and protected by adhesive pad, the tightness of connection is improved, positioning and fixing are carried out by the screwing of convenient dismantling nut after connection, the efficiency of dismounting is improved, and the practicability of test equipment is further improved.

The utility model discloses a novel electric automobile rear axle assembly noise testing device. The novel electric automobile rear axle assembly noise testing device comprises a base; the mechanical arm is mounted on the base; a fixing plate; the mounting plate is fixed at the moving end of the mechanical arm, and the mounting plate is fixedly connected with the fixed plate; the floating plate is arranged on the fixed plate in a sliding manner; the industrial microphone sensor is mounted on the floating plate; the sound insulation structure is arranged on the floating plate; and the floating plate is connected with the fixed plate through the sliding structure. The sound insulation cotton is accurately controlled by the mechanical arm to be attached to the position to be tested of the electric automobile rear axle assembly to form a closed space, noise of the surrounding environment is effectively isolated, the noise detection precision is remarkably improved, the sound insulation effect is further enhanced through combined use of the sound insulation cotton and the sealing ring, and the accuracy of a test result is ensured.

The utility model provides an engine noise testing device, which relates to the technical field of engine testing and comprises a bottom plate, a sound insulation cavity is mounted at the top end of the bottom plate, a door body is hinged to the front end of the sound insulation cavity, a controller is mounted at the top end of the sound insulation cavity, and a rotating mechanism is arranged at the bottom end in the sound insulation cavity. A placing plate is mounted at the lower part of the interior of the sound insulation cavity, and a clamping mechanism is arranged above the placing plate; the clamping mechanism is arranged above the placing plate, and the first rotating wheel, the threaded rod, the threaded sleeve, the clamping plate, the limiting groove, the limiting block, the rotating block, the air cylinder and the top plate of the clamping mechanism are matched with one another, so that the engine can be transversely and longitudinally clamped and fixed, and the engine is more stable during noise testing; other noise caused by shaking is avoided, so that the test structure is more accurate, and the accuracy of the device in use is greatly improved.

The utility model relates to the technical field of water pump detection equipment, and particularly discloses a water pump detection platform which comprises a base, a water tank, a control box, a movable base, a sound level meter, a pressure gauge, a water flow speed and temperature integrated sensor, a pressure sensor, a noise test shell, a flow meter, an electric valve, a first pipe body, a second pipe body, a motor and a pump body. The control box is arranged on one side of the water tank, the movable base is arranged on one side of the base, the pump body is arranged at the upper end of the movable base and communicated with the water tank through a first pipe body and a second pipe body, the motor is communicated with the pump body, and the noise testing shell is arranged at the upper end of the movable base. The noise testing shell covers the motor and the pump body, the sound level meter is arranged on the noise testing shell, and the pressure gauge, the water flow speed and temperature integrated sensor, the pressure sensor, the flow meter and the electric valve are sequentially arranged on the outer surface wall of the second pipe body.

This invention discloses a method for analyzing and judging the compliance of transformer noise, comprising the following steps: energizing the transformer to be tested and inputting test power to form a noise test environment; collecting noise environment data from different locations and sending it to a cloud center; the cloud center preprocessing the noise environment data and, based on mutually independent pre-trained convolutional neural network models, identifying whether the noise environment data collected from different locations meets product performance requirements; and fusing the identification results of the noise environment data from different locations to obtain the final predicted fusion result. Implementing this invention enables automatic testing and analysis of transformer noise, quickly determining its compliance, and improving work efficiency and accuracy.

This utility model relates to a noise testing chamber, including a soundproof enclosure body with an inlet and an outlet on its side wall; a transfer module, which includes a transmission channel composed of multiple electric rollers arranged in a row, the transmission channel passing through the inlet and the outlet, limiting structures on both sides of the transmission channel, and multiple guide rollers on the limiting structures, the multiple guide rollers being arranged above the transmission channel, the rotation axis of the guide rollers being perpendicular to the plane where the multiple electric rollers are located, the multiple guide rollers being distributed along the conveying direction of the transmission channel, and the distance from the multiple guide rollers to the middle of the transmission channel decreasing sequentially; and a testing module disposed inside the soundproof enclosure body. This utility model reduces the workload of operators and improves the efficiency of motor noise detection.

The invention relates to the field of electric pedal noise testing, in particular to an electric pedal noise testing device which comprises two symmetrically-arranged conveying units, the periphery of one conveying unit is covered with a sound insulation room, and a noise detection unit is arranged in the sound insulation room; each conveying unit comprises a supporting table, a set of conveying belts are arranged on the two sides of the supporting table, a conveying plate is conveyed on one set of conveying belts, and a fixing assembly for fixing an electric pedal is arranged on the conveying plate; a window is formed in one side of the sound insulation room; the two conveying units are arranged, the conveying plates and the electric pedals are alternately pushed and received, the electric pedals can be conveyed into the independently-arranged sound insulation room, then noise testing is conducted, the electric pedals are assembled outside the sound insulation room in advance, the electric pedals are subsequently pushed into the sound insulation room along the windows through the conveying units, and the electric pedals are prevented from being carried into the sound insulation room in the period. Therefore, the problem that foreign matters enter or collide with the sound insulation room can be solved, and a good environment can be provided for noise testing.

The utility model relates to the technical field of sound insulation testing devices, in particular to an intelligent control mute room. Which comprises a silence room body and is characterized in that the silence room body comprises a supporting base, a door plate is arranged at the top of the supporting base, a top plate is arranged at the top of the door plate, a sliding door is arranged in the center of one side of the door plate, a control panel is arranged on one side of the sliding door, an electric heater is arranged in the center of the supporting base, and a conveying window is formed in the center of one side of the door plate; a protective frame is arranged on the outer side of the conveying window, and an automatic door closing assembly is arranged on the conveying window. The intelligent level of the mute room is improved, real-time monitoring and automatic adjustment of parameters such as noise level and environmental conditions are realized, and the accuracy and reliability of a test result are improved; the sound insulation performance of the mute room is optimized, the indoor noise level is reduced, and a more ideal testing environment is provided for noise testing of products such as precise instruments and electronic equipment; and the convenience and friendliness of user operation are improved.

The invention relates to an in-vehicle noise testing device, and relates to the technical field of noise testing, the in-vehicle noise testing device comprises a testing block, a processor and a support, the testing block is provided with a microphone array in signal connection with the processor, the microphone array is composed of a plurality of microphones and is used for collecting in-vehicle noise, and the support is used for installing the testing block in a vehicle. The processor is used for receiving and processing sound signals of the microphone array, the processor is provided with a sound imaging module, a spectrum analysis module and a data storage module, and the sound imaging module is used for carrying out imaging analysis on sound data collected by the microphone array; the spectrum analysis module is used for analyzing frequency and amplitude distribution of sound collected by the microphone array, and the data storage module is used for storing test data. The method and the device have the effect of improving the comprehensiveness of the in-vehicle noise test.

The utility model provides a noise tester for a metal mesh pad, and relates to the field of metal mesh pad processing. The noise tester for the metal mesh pad comprises a bearing support, a supporting plate is fixedly connected to the front end of the bearing support, a supporting mechanism is arranged in the supporting plate, noise testing mechanisms are fixedly connected to the side walls of the left end and the right end of the bearing support, and a balance rod is fixedly connected to the end, away from the supporting mechanism, of the top wall of the bearing support. When the noise tester for the metal mesh pad is used, an external lifting mechanism drives a connecting frame to move to a mesh pad conveying mechanism, a limiting plate preferentially makes contact with the surface of the conveying mechanism, the limiting plate blocks and limits the metal mesh pad, the connecting frame continuously moves downwards, and the connecting frame drives a guide rod to move through a buffer spring; the guide rod drives the contact plate to make contact with the surface of the conveying mechanism, at the moment, the electric lifting rod extrudes the metal net pad, meanwhile, the noise testing mechanisms located on the two sides of the bearing support test the metal net pad, and the advantage of automatic testing is achieved.

The invention provides dummy shaft feeding and discharging equipment which is applied to the technical field of motor machining and comprises a dummy shaft feeding machine, a noise testing machine and a dummy shaft discharging machine, and the dummy shaft feeding machine, the noise testing machine and the dummy shaft discharging machine are sequentially arranged from left to right for machining; the dummy shaft feeding machine comprises a first machine table, an overturning feeding assembly, a machine shell carrying assembly, a machine shell conveying assembly, a dummy shaft conveying assembly, a nut conveying assembly, a nut tightening assembly and a pressing assembly. The overturning feeding assembly, the machine shell carrying assembly, the machine shell conveying assembly, the dummy shaft conveying assembly, the nut conveying assembly, the nut tightening assembly and the pressing assembly are all arranged on the first machine table for machining. The noise testing machine obtains a finished product assembled by the dummy shaft feeding machine for testing; the technical problem of how to perform full-automatic dummy shaft loading and unloading testing at present is solved.

The invention provides a noise testing method and device for an electronic parking brake caliper, a medium and equipment, and the method comprises the steps: calculating a sound pressure curve of a time window corresponding to a sound pressure signal through employing a set time window length; calculating to obtain a noise stability evaluation index of the to-be-tested brake caliper; if the noise stability evaluation index meets a preset condition, determining a noise amplitude evaluation index of the to-be-tested brake caliper based on the sound pressure curve; fourier transform is carried out on the sound pressure curve to obtain a sound pressure spectrum; determining a noise test result of the to-be-tested brake caliper based on an abnormal sound signal existence state in the sound pressure signal and a noise amplitude evaluation index; the sound pressure signal of the brake caliper is tested, the noise stability evaluation index and the noise amplitude evaluation index are calculated according to the time domain signal, whether the abnormal sound signal exists or not is judged according to the frequency domain signal, and the noise test result of the brake caliper is comprehensively determined by combining the time domain signal and the frequency domain signal, so that the accuracy and authenticity of the noise test of the brake caliper are improved.

The utility model relates to a noise test device and a system thereof, the noise test device comprises a box body, a microphone, a data collector and a connecting line, a cavity is formed in the box body, a first fixing assembly and a second fixing assembly are arranged on the box body, a mounting position is arranged on the box body, and the mounting position is in a flaring shape; the microphone is arranged on the mounting position through the first fixing assembly; the data collector is arranged in the cavity through the second fixing assembly, and the output end of the data collector is used for being connected with a display; the connecting line is electrically connected with the microphone and the input end of the data collector; the problem that an existing noise test meter cannot diagnose a noise source, and consequently the test efficiency is low is solved.

The utility model relates to a motor test line body assembly. The assembly comprises a conveying line body main body; the performance test equipment is used for testing the operation performance of the to-be-tested motor; the noise testing equipment is used for testing the noise state of the motor to be tested; the appearance testing equipment is used for detecting the appearance state of the to-be-tested motor; and the control module is used for judging the qualified state of the to-be-detected motor according to the detected operation performance, noise state and appearance state. The main body of the conveying line body is integrated with the high-precision servo positioning module, the multi-channel electrical parameter analyzer is integrated through the performance testing equipment, performance parameters such as resistance, counter electromotive force and inductance of the motor are accurately collected, micron-level detection and abnormal sound frequency spectrum analysis of the motor under specific working conditions can be achieved through the noise testing equipment, and the detection accuracy is improved. Surface defect identification is carried out through the appearance testing equipment, multi-dimensional data fusion analysis can be carried out through the control module to realize quality judgment, the qualification of the motor production process can be effectively monitored, and the qualification rate of the motor is improved.

The invention relates to speed reducer performance testing, and discloses a multifunctional speed reducer performance testing workbench which comprises a speed reducer body and a mounting frame in bolted connection with the bottom of the speed reducer body, and the bottom of the mounting frame is provided with a clamping assembly for reinforcing and buffering the speed reducer body through air bag expansion. The bottom of the clamping assembly is provided with a supporting assembly for changing the mounting position of the clamping assembly through degree-of-freedom adjustment, the clamping assembly comprises a top plate arrayed below the mounting frame, a base plate is arranged below the top plate, an air bag is preset in the base plate, and the air bag is inflated and expanded to cooperate with the clamping assembly, so that the clamping assembly can be clamped in the mounting frame. Flexible fixing and vibration buffering of the speed reducer are achieved; during noise testing, inflation is not needed, the candle is fixed through the elastic piece, the sound vibration visualization principle is combined, the noise level is observed through flame shaking, and integration of vibration stability and noise detection is achieved.

The utility model relates to the technical field of noise detection, and discloses a noise test tool which comprises a main body mechanism and an auxiliary mechanism, the auxiliary mechanism is located at the lower end of the main body mechanism, and the main body mechanism comprises a dustproof box, a box cover and a lock catch. According to the noise test tool, through the installation of the main body mechanism, in the use process of the noise test tool, through the arrangement of the fixing assembly, when a noise detector needs to be disassembled, an electric push rod is started, and the electric push rod drives a fixing plate to contract so as to loosen the fixation of the noise detector, so that rapid disassembly and assembly are facilitated; the box cover is opened during use, the reset spring drives the mounting base to reset after losing the pressure of the box cover, the noise detector can be jacked out of the dustproof box for use, the box cover is closed after use, the noise detector is protected through the dustproof box, and dust is prevented from entering the machine to affect use when the machine is idle; and the practicability of the noise testing tool is improved.