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36 results about "Decibel meter" patented technology
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Vehicle bearing failure testing instrument and failure testing method
ActiveCN101419122AAvoid uncertaintyImprove accuracyVehicle testingSubsonic/sonic/ultrasonic wave measurementMedium frequencyDecibel meter
The invention provides a fault detector for a vehicle bearing, which judges by utilization of sound features of the bearing under the condition of fault. The detector comprises a connector, a driver, a decibel meter and a power module, wherein the connector is provided with a fixed component which is matched with a wheel axle hole of a wheel, and connected and fixed on the wheel; the driver drives the connector, drives the wheel to rotate, and simulates the running state of the wheel; the decibel meter measures the sound generated when the wheel is rotated, and respectively display values of high frequency components, medium frequency components and low frequency components; and the power module supplies power. The invention also discloses a method for detecting fault of the vehicle bearing. The fault detector for the vehicle bearing is importantly characterized in that the fault detector for the vehicle bearing quantizes the acquired sound according to high frequency, medium frequency and low frequency, takes quantized indexes as criterions, and avoids nondeterminacy caused by judgment in virtue of subjective experience.
Owner:SAIC VOLKSWAGEN AUTOMOTIVE CO LTD
Silence reminder for library
The invention provides a silence reminder for a library. The silence reminder comprises a plurality of decibel meters, a single-chip microcomputer, an LED (light-emitting diode) display screen and a plurality of warning devices, wherein each decibel meter is arranged at a corresponding position of each seat of the library and is used for collecting sound signals at the corresponding seat of the library, converting the sound signals into electric signals and transmitting the electric signals and corresponding seat information of the library to the single-chip microcomputer; the warning devices are in one-to-one correspondence with the decibel meters, and each warning device is distributed at the corresponding position of the corresponding decibel meter; the single-chip microcomputer is used for controlling the displaying of the LED display screen according to the electric signals received from the decibel meters and controlling the start and stop of the corresponding warning devices according to the electric signals received from the decibel meters.
Owner:SHANGHAI DIANJI UNIV
System and method of adjusting ring tone volume
InactiveCN105744045AVolume up automaticallyExtend standby timeSubstation speech amplifiersCommunication unitControl signal
The invention provides a method of adjusting a ring tone volume, applied to a communication terminal which comprises a loudspeaker, a communication unit, a decibel meter and a signal conversion unit. The method comprises the steps of: when the communication unit of the communication terminal receives an incoming call signal, waking up the decibel meter; the decibel meter measuring the sound pressure level of surrounding environment noises of the communication terminal; the signal conversion unit converting the sound pressure level of surrounding environment noises into a ring tone volume data value corresponding to the sound pressure level; and generating a control signal to control the loudspeaker to release a ring tone according to the ring tone volume data. In addition, the invention provides a system of adjusting a ring tone volume. The system and method can automatically adjust a ring tone volume according to surrounding environment noises.
Owner:FU TAI HUA IND SHENZHEN +1
Automatic baby stroller and working method thereof
ActiveCN107215381AImprove securityCarriage/perambulator accessoriesPosition/course control in two dimensionsComputer terminalWorking set
The invention discloses an automatic baby stroller, which comprises a stroller body, a first handrail and a second handrail; the inner part of the stroller body is provided with a processor, a driving device, a decibel meter, a navigation device and a storage device; the decibel meter is used for measuring noise of ambient environment; the storage device is used for storing user information; the driving device, the decibel meter, the navigation device and the storage device are connected with the processor; the processor is connected with the mobile terminal, and the upper part of the stroller body is provided with an electric protective cover and a camera; the electric protective cover is connected with the driving device and used for protecting children in the stroller; the camera is connected with the processor and used for shooting surrounding environment; a fingerprint identifying device is arranged on the first handrail, and connected with the processor for identifying the identity of the stroller pusher; a first pressure sensor and a second pressure sensor are arranged on the first handrail and the second handrail respectively, and connected with the processor for detecting if anyone pushes the stroller.
Owner:九江市厚华科技有限公司
Container data center and method for reducing noise in the container data center
A container data center includes a portable container, server cabinets, a decibel-meter, fans to cool the server cabinets, fan controlling systems to speed up or slow down the fans, an air conditioner to adjust a temperature inside the container, and a temperature adjustment system to receive a decibel level sensed by the decibel-meter. The temperature adjustment system compares the value of the received decibel level with a preset value. If the value of the received decibel level is greater than the preset value, the temperature adjustment system decreases the temperature of air outputted by the air conditioner, thereby the fan controlling systems slowing down the fans. If the value of the received decibel level is not greater than the preset value, the temperature adjustment system increases the temperature of the air outputted by the air conditioner, thereby the fan controlling systems speeding up the fans.
Owner:HON HAI PRECISION IND CO LTD
Novel environment monitoring device
InactiveCN107168208ASimple structureSimple and fast operationProgramme controlComputer controlAppliance componentEngineering
The invention discloses a novel environment monitoring device, which comprises a control box body, the interior of the control box body is provided with a partition, and the inner bottom surface of the control box body is provided with a storage battery, a processor, a storage device, a WIFI connector and a / D converter, the storage battery, processor, storage, WIFI connector and A / D converter are located under the partition, and the center of the upper surface of the partition is equipped with an electric telescopic rod, which can drive the two The upper end of an L-shaped connecting frame is opened, and drives the connecting seat to move upwards, so that the temperature sensor, dust sensor, humidity sensor and decibel meter extend out of the control box. In rainy days, water can be prevented from entering the control box, effectively The electrical components are protected. The new environmental monitoring device has a simple structure and is easy to operate. It can not only protect the electrical components, but also make the service life of the device longer, and does not affect the detection results of the electrical components.
Owner:河南宏达检测技术有限公司
Container type data center and noise reduction method thereof
InactiveCN103135717ATurn down the noiseStable speedDigital data processing detailsControl systemData center
A container type data center comprises a box body, a plurality of servers arranged inside the box body, a decibel meter which is arranged inside the box body and used for sensing a decibel value inside the box body, a plurality of cooling fans used for dissipating heat of the servers, a plurality of fan control systems used for control rotation speeds of the cooling fans, a cooling device and a temperature adjustment system. The temperature adjustment system is used for receiving the decibel value sensed by the decibel meter and comparing the obtained decibel value with a preset decibel value, when the obtained decibel value is larger than the preset decibel value, the temperature adjustment system turns down temperature of the cooling device, and then the fan control systems are enabled to turn down the rotation speeds of the cooling fans. When the obtained decibel value is equal to or smaller than the preset decibel value, the temperature adjustment system turns up the temperature of the cooling device, and then the fan control systems are enabled to turn up the rotation speeds of the cooling fans. The container type data center can reduce noise. Further provided is a noise reduction method of the container type data center.
Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
Automatic device for playing light music
InactiveCN101770792ANovel ideaIngenious designSubsonic/sonic/ultrasonic wave measurementRecord information storageThe InternetDecibel meter
The invention relates to an automatic device for playing light music. The device comprises an automatic decibel meter, a music module and a starting / closing device. When the decibel meter determines that the voice is higher than a normal decibel, the starting device will open the music module to play a light, lively and graceful music. When the surrounding voice is lower than or equal to the normal decibel, the starting device will close the music module. The automatic decibel meter is any automatic decibel meter sold in market and the music in the music module can be preset by the manufacturer, stored by the user or downloaded from the internet by user. The invention has novel concept and smart design, plays an important role in relieving stress and mood, avoids the phenomena of unnecessary disputation and quarrel, and is beneficial to create a harmonious society.
Owner:DAJING HIGH SCHOOL AFFILIATED TO SHANGHAI INT STUDIES UNIV
Automated security system for schools and other structures
ActiveUS9741223B2Alarms using trappingAlarms by security system stimulationSmoke detectorsStructure of Management Information
Disclosed are various embodiments for security systems for schools and similar structures. Various security devices may be monitored in a structure, such as a school, where at least one of the security devices includes a wall-mounted duress alarm, an electronic keypad, a radio-frequency identification (RFID) reader, a card access reader, a decibel meter, a smoke detector, or a mobile computing device. In response to a signal from one of the security devices being indicative of a breach having occurred in the structure, a predetermined breach policy may be automatically implemented that may include, for example, compartmentalizing a region of the structure by performing an automated closing of a door that separates the region of the structure from another region of the structure.
Owner:S H I E L D LLC
Device and method of testing sound insulation and noise reduction of wall material
PendingCN109239200ADigitizationEasy to operateAnalysing solids using sonic/ultrasonic/infrasonic wavesEngineeringNoise reduction
The invention discloses a device and a method of testing sound insulation and noise reduction of a wall material. The device comprises a base, an outer box, an inner box, a noise source, a first decibel meter and a second decibel meter, wherein the outer box, the inner box, the noise source, the first decibel meter and the second decibel meter are all put on the base, the inner box is arranged inthe center in the outer box, the top of the outer box is provided with a through hole, a to-be-tested wall material is coated on the inner wall of the inner box, the noise source is put in the centerin the inner box, the top of the inner box is provided with a handle, the handle penetrates the through hole and exposes out of the outer box, the first decibel meter is arranged between the outer boxand the inner box, the second decibel meter is arranged outside the outer box, and distances from the first decibel meter and the second decibel meter to the noise source are equal. The device of testing sound insulation and noise reduction of the wall material can test sound insulation and noise reduction of the wall material quantitatively, shows sound insulation and noise reduction of the wallmaterial in a data form, and is simple. The test method is easy to operate, is low-cost, and can detect a large quantity of samples rapidly and stably.
Owner:长沙标朗住工科技有限公司
Monitoring system for acquiring information of teaching realistic environment in real time
InactiveCN107958500AImprove managementEasy to shootRegistering/indicating time of eventsData processing applicationsSound detectionAcquisition apparatus
The invention relates to the technical field of education teaching systems, in particular to a monitoring system for acquiring information of a teaching realistic environment in real time. The monitoring system comprises a management system, and a mobile intelligent terminal, a controller, a roll call apparatus, a camera apparatus and a sound detection decibel meter which are disposed in a classroom; the roll call apparatus, the camera apparatus and the sound detection decibel meter are respectively connected with the controller, and the controller is connected with the management system by virtue of a network; the camera apparatus is arranged in front of the classroom and disposed in the middle position of an upper edge of a blackboard; the sound detection decibel meter and the roll callapparatus are arranged on a desktop of a desk; the roll call apparatus comprises a first fingerprint acquisition apparatus, a display device, a processor and a two-dimensional code scanner, the firstfingerprint acquisition apparatus, the display device and the two-dimensional code scanner are connected with the processor, and the processor is connected with the controller. By acquiring the classattendance situation of students, the class attendance state of the students at different time periods can be counted, the interesting subjects of the school can be determined, the attendance rate canalso be taken into the evaluation item of the teaching quality of teachers, and the management of the teachers for the students can be improved.
Owner:郑州庭淼软件科技有限公司
Autoclaved aerated concrete block performance testing device
InactiveCN105651975ACheck thermal insulationTest sound insulationMaterial testing goodsBrickThermal insulation
The invention discloses an autoclaved aerated concrete block performance testing device. The autoclaved aerated concrete block performance testing device comprises a test box and a control box, and is provided with a digimite and a decibel meter; the test box comprises a box body composed of aerated bricks; the box body is provided with an upper opening structure; a concrete block and an aerated brick block are arranged at the opening of the upper opening structure in parallel so as to form a sealed cavity together with the box body; a thermocouple, a buzzer, and a heating device are arranged in the sealed cavity; the control box is arranged on the test box; a master control circuit is arranged in the control box; and a power switch, power regulation rotary knob, a temperature display module, and a sound volume control module are arranged on the outer wall of the control box. The structure of the autoclaved aerated concrete block performance testing device is simple; operation is convenient; and the autoclaved aerated concrete block performance testing device can be used for thermal insulation and sound insulation performance testing of autoclaved aerated concrete blocks.
Owner:黄石市神州建材有限公司
Door and window sound insulation performance detection apparatus
InactiveCN106289827ASmall footprintEasy to detectStructural/machines measurementSound sourcesAudio power amplifier
The invention discloses a door and window sound insulation performance detection apparatus, comprising a casing, a loudspeaker, an output power adjustable amplifier, a signal generator, a first decibel meter, a second decibel meter and a computer. The casing comprises a sound source chamber, a detection plate and a reception chamber which are connected in sequence. Through the first decibel meter in the sound source chamber and the decibel meter in the reception chamber, the sound intensity of the two chambers can be measured at the same time, readings of the first decibel meter in the sound source chamber and the decibel meter in the reception chamber are subtracted to obtain the sound insulation performance of a to-be-detected building door and window. The detection apparatus is small in occupation space, movable, and convenient to detect. No dimension limit is required for a to-be-detected test piece. The test step is simplified and free from influences of human factors. The measurement result is more precise.
Owner:GUANGZHOU HANDSOME GLASS CURTAIN WALL ENGCO LTD
Child swing device test system and test method
PendingCN110488127AEasy to storeConvenient querySubsonic/sonic/ultrasonic wave measurementElectrical testingNoise detectionEngineering
The invention discloses a child swing device test system, which comprises a mute box, a processor and a warning device. The mute box is internally provided with a positioning mechanism, a frequency detector and a decibel meter. The frequency detector, the decibel meter and the warning device are electrically connected to the processor; a test product placed in the mute box is fixed through the positioning mechanism; the frequency detector is used for detecting the frequency of the test product in the swinging process; the decibel meter is used for detecting first noise that changes with time during the swinging process of the test product, and second noise that changes with frequency at a preset time point; and the processor is used for comparing the frequency with frequency similarity threshold, the first noise with first noise threshold and the second noise with second noise threshold to judge whether the test product is qualified and storing and outputting the test results. The frequency, the first noise and the second noise are tested simultaneously, thereby improving detection efficiency and ensuring that the test results are more accurate. The invention also discloses a childswing device test method.
Owner:CHINA WONDERLAND NURSERYGOODS
Equipment for precisely measuring output quantity of carbon powder
PendingCN109283815AImprove work efficiencyElectrographic process apparatusBio-packagingDrive shaftFixed frame
The invention provides equipment for precisely measuring the output quantity of carbon powder, and belongs to the field of carbon powder box testing devices. The equipment comprises a base, a carbon powder box fixing frame, a motor fixing frame, a motor, a torsion sensor, a decibel meter and a transmission shaft. The carbon powder box fixing frame comprises a bottom plate, a vertical barrel, a rear plate, two connecting shafts and a front plate. The bottom plate is horizontally fixed to the rear end face of the base, the vertical barrel is vertically fixed to the upper surface of the bottom plate, a sleeve is fixed to the rear end face of the rear plate, and the vertical plate is sleeved with the rear plate through the sleeve. The two connecting shafts are sleeved with two fixing rings. Through the cooperation of the motor, the torsion sensor, an electronic scale and the decibel meter, the device can simultaneously detect torque from the device to the carbon powder box, the quantitiesof the carbon powder output under different kinds of torque, and the volume of sound given when the carbon powder box works at different rotating speeds. The measuring working efficiency is improved,and measured parameters better reflect the quality of the carbon powder box.
Owner:JIANGXI KAILIDE TECH CO LTD
Automatic light music equipment
InactiveCN102237110ANovel ideaIngenious designSubsonic/sonic/ultrasonic wave measurementRecord information storageAutomatic test equipmentThe Internet
The invention relates to automatic light music equipment. The automatic light music equipment comprises an automatic sound test decibel meter, a music module, starting equipment and stopping equipment, wherein when through the test of the decibel meter, the decibel of sound is higher than the normal decibel, the starting equipment ensures the music module plays relax, happy and melodious music; and when the decibel of the surrounding sound is lower than or equal to the normal decibel, the stopping equipment turns off the music module. The automatic sound test decibel meter is any decibel meter sold in the market; the music in the music module can be set by a manufacturer in advance or stored by a user or downloaded by the user from the Internet; and the music module can be used as a player independently. The automatic light music equipment has a novel idea and ingenious design, achieves good effects of relieving stress and easing mood of people in a nervous and restless urban environment and avoids some unnecessary undesirable phenomena such as disputes, quarrels and the like at the same time, and plays a great role in creating a harmonic society.
Owner:孟莉亚
Intelligent crutch
The invention relates to an intelligent crutch, comprising a crutch body, a voice device, a radar speed measuring device, an infrared ranging device, a decibel meter, an LED lamp device and a controldevice. The intelligent crutch provides lights for walking at night by installing LED and give out alarm light when in danger. The decibel instrument on the crutch promptly reminds users of the noisyenvironment and the need to be vigilant. Infrared sensors and radar velocimeters can detect the road conditions in a timely and sensitive manner, and send out voice prompts, so that it is more convenient to master safe routes when traveling on roads.
Owner:孙楚皓
Vocal music practice demonstration platform
The invention relates to the technical field of vocal music, in particular to a vocal music practice demonstration platform. The vocal music practice demonstration platform is characterized in that universal wheels (1) are mounted at four corners of the lower surface of a bottom plate of a demonstration platform body (2) and are convenient and quick to move, a music practicer wears a wireless headset (9) to receive accompanying music from a loudspeaker of a notebook computer and sings with a wireless microphone in hand, a first rotary knob, a second rotary knob, a third rotary knob, a fourth rotary knob, a fifth rotary knob and a volume controller (10) are used for adjusting the volume, sound signals are transmitted to a first sound pickup and a second sound pickup for sound collection, sound is subjected to photoelectric signal conversion of a sound collection cone (14), a single chip microcomputer control cabinet (3) and a counter single chip microcomputer (4), a decibel meter displayer (18) is used for displaying a decibel oscillogram of sound sung by the practicer, and the notebook computer plays the decibel oscillogram of an original singer synchronously, so that the practicer can discover own shortcomings and improve timely.
Owner:苟小平
Multifunctional integrated advertisement bus station board device
The invention discloses a multifunctional integrated advertisement bus station board device. A vertical installation board is fixed on a base and has an advertisement area, a clock fixing area, a hygrothermograph fixing area, a decibel meter fixing area and a bus electronic board installing area, wherein the advertisement area is located in the middle of the installing area, and an LED advertisement screen, a poster advertisement and a light box advertisement are installed in the advertisement area from top to bottom in sequence; the clock fixing area, the hygrothermograph fixing area and the decibel meter fixing area are located on the left of the installation board, a clock is fixed in the clock fixing area, a hygrothermograph is fixed in the hygrothermograph fixing area, and a decibelmeter is fixed in the decibel meter fixing area; the bus electronic board installing area is located on the right of the installation board, and a bus electronic board is fixed in the bus electronic board installing area. By means of the multifunctional integrated advertisement bus station board device, people waiting for buses can know the bus arriving situation and real-time temperature, humidity and noise in real time and can also appreciate different advertisements when waiting for the buses, and the good advertising purpose is achieved.
Owner:昆山市魔方广告传媒有限公司
Visual and digital display type sound propagation demonstrator
The invention relates to a visual and digital display type sound propagation demonstrator comprising multiple second boxes. Each second box comprises a first accommodating chamber and a second accommodating chamber. The first accommodating chamber is internally provided with a sound propagation device which extends to the outside of the second box body to be connected with a sound decibel meter. The second accommodating chamber is internally provided with a spring knocking hammer. Sound is generated by knocking of the spring knocking hammer and displayed in a visual and digital display mode through the sound decibel meter so that the students are enabled to clearly and visually understand and learn various properties of sound propagation.
Owner:李志忠
Vehicle silencer with multi-stage silencing assembly
InactiveCN107893687AFast structureSimple structureInternal combustion piston enginesExhaust apparatusFuel tankGasoline
The invention discloses a vehicle silencer with a multi-stage silencing assembly. The vehicle silencer comprises a silencer main body, wherein a sound inlet pipe and an oil blocking tank are arrangedon the outer surface of one side of the silencer main body, and the outer surface of one side of the oil blocking tank is fixedly connected to the outer surface of the other side of the sound inlet pipe; a decibel meter is fixedly connected to the outer surface of the front end of the oil blocking tank; and a first-stage silencer and a second-stage silencer are fixedly connected to the outer surface of one side in the silencer main body, the first-stage silencer is located on one side of the second-stage silencer, and a flange disc is movably connected to the outer surface of one side of the second-stage silencer. The vehicle silencer disclosed by the invention is provided with the oil blocking tank, the flange disc and the decibel meter and can be used for collecting a small amount of gasoline leaked during the working of an engine, so that the situation that gasoline enters the silencer is prevented; and the silencer can be very conveniently detached to be inspected, and the normal state or abnormal state of the engine can be judged according to the sound of the engine, so that the vehicle silencer has relatively good use prospects.
Owner:盐城市昇众鑫机械有限公司
Motor performance testing equipment
InactiveCN107656201AEasy to detectIncrease temperatureDynamo-electric machine testingElectric machineEngineering
The invention provides a motor performance testing device, which includes a detection platform, a first bracket, a motor fixing table, a rubber pad, a shock-absorbing cavity, a shock-absorbing spring, a second bracket, an infrared temperature detector, a third bracket, and a decibel meter; The motor fixing table is arranged on the top of the detection platform through the first bracket, and the top of the motor fixing table is provided with a rubber pad, and the rubber pad is provided with several vertically extending shock-absorbing cavities, any shock-absorbing cavity Shock absorbing springs extending in the same direction are arranged in the cavity; the infrared temperature detector is set on one side of the detection platform through the second bracket, the decibel meter is set on the other side of the detection platform through the third bracket, and the infrared The heights of the temperature detector and the decibel meter are higher than the height of the detection platform. The invention has the beneficial effects of simple structure, low manufacturing cost and high reliability of measurement results.
Owner:SILVER DIAMOND ELECTRIC CO LTD TIANJIN
Music intervention device and method in cell experiments
InactiveCN107557298AOvercoming distractionsOvercome uniformity issuesBioreactor/fermenter combinationsBiological substance pretreatmentsWater channelEngineering
The invention belongs to the field of experimental devices and relates to a music intervention device and method in cell experiments. A loudspeaker in the music intervention device is located on a bottom layer of a CO2 constant temperature incubator, a water channel is arranged on the side surface of the loudspeaker, a non-woven fabric in a non-woven fabric cell plate suspending device is fixed inthe CO2 constant temperature incubator through an inelastic rope, and a decibel meter is placed in the center of the non-woven fabric in use and is used for determining a decibel value of the loudspeaker; and after a relation between a displayed value of the decibel meter and the volume of the loudspeaker is recorded, the decibel meter is taken out, a cell culture container is placed in an up-down vertical relation with the loudspeaker, and the volume of the loudspeaker is adjusted under an aseptic condition so as to carry out music intervention on cells. The device is simple in structure andconvenient to use; physical vibration caused by a loudspeaker box to the cells is reduced in a vertical suspension manner, and meanwhile, the cells is uniformly subjected to music intervention, so that the interference of irrelevant factors can be eliminated, and the validity of experimental intervention conditions can be guaranteed.
Owner:DALIAN MEDICAL UNIVERSITY
An automated baby stroller and its working method
ActiveCN107215381BImprove securityCarriage/perambulator accessoriesPosition/course control in two dimensionsComputer terminalComputer science
The invention discloses an automatic baby stroller, which comprises a stroller body, a first handrail and a second handrail; the inner part of the stroller body is provided with a processor, a driving device, a decibel meter, a navigation device and a storage device; the decibel meter is used for measuring noise of ambient environment; the storage device is used for storing user information; the driving device, the decibel meter, the navigation device and the storage device are connected with the processor; the processor is connected with the mobile terminal, and the upper part of the stroller body is provided with an electric protective cover and a camera; the electric protective cover is connected with the driving device and used for protecting children in the stroller; the camera is connected with the processor and used for shooting surrounding environment; a fingerprint identifying device is arranged on the first handrail, and connected with the processor for identifying the identity of the stroller pusher; a first pressure sensor and a second pressure sensor are arranged on the first handrail and the second handrail respectively, and connected with the processor for detecting if anyone pushes the stroller.
Owner:九江市厚华科技有限公司
Vehicle bearing failure monitor and failure monitoring method
ActiveCN100590409CAvoid uncertaintyImprove accuracyVehicle testingSubsonic/sonic/ultrasonic wave measurementMedium frequencyEngineering
The invention provides a fault detector for a vehicle bearing, which judges by utilization of sound features of the bearing under the condition of fault. The detector comprises a connector, a driver,a decibel meter and a power module, wherein the connector is provided with a fixed component which is matched with a wheel axle hole of a wheel, and connected and fixed on the wheel; the driver drivesthe connector, drives the wheel to rotate, and simulates the running state of the wheel; the decibel meter measures the sound generated when the wheel is rotated, and respectively display values of high frequency components, medium frequency components and low frequency components; and the power module supplies power. The invention also discloses a method for detecting fault of the vehicle bearing. The fault detector for the vehicle bearing is importantly characterized in that the fault detector for the vehicle bearing quantizes the acquired sound according to high frequency, medium frequencyand low frequency, takes quantized indexes as criterions, and avoids nondeterminacy caused by judgment in virtue of subjective experience.
Owner:SAIC VOLKSWAGEN AUTOMOTIVE CO LTD
Drag grinding test bench for locomotive main axle detection
InactiveCN107621376AEasy to judgeSynchronized and adjustable speedRailway vehicle testingGrinding testDecibel meter
The present invention provides a drag grinding test bench for locomotive main axle detection. The drag grinding test bench comprises a horizontally-arranged base, a main axle mounting stage and variable frequency motors; a main axle, wheel axles and gear boxes are provided with temperature sensors respectively; the temperature sensors are connected with a temperature display screen; the main axle,the wheel axles and the gear boxes are provided with noise decibel meters respectively; and the noise decibel meters are connected with a noise display screen. The drag grinding test bench of the present invention can be used for simultaneously detecting the main axle, the wheel axles and the gear boxes, is low in cost, good in detection effect, can measure temperatures and noises, perform detailed detection and easily judge fault points. According to the drag grinding test bench, the operating conditions of the variable frequency motors are controlled through a motor synchronous controller,so that the rotation speeds of the variable frequency motors are synchronous and can be adjusted, and therefore, temperatures and noises under different operating conditions can be detected.
Owner:HUBEI WEINENGDA TRANSMISSION CO LTD
Arteriovenous fistula blood flow sound tester
The invention relates to the technical field of medical equipment, in particular to an arteriovenous fistula blood flow sound tester. The arteriovenous fistula blood flow sound tester comprises a decibel meter, wherein the decibel meter comprises a microphone, a display screen and a press button; the microphone of the decibel meter is connected with one end of a sound transmission pipe; and the other end of the sound transmission pipe is connected with a sound auscultation cylinder. By adoption of the above structure, the arteriovenous fistula blood flow sound tester provided by the invention can prove blood flows successfully by detecting that the decibel of the sound of blood flow passing through an arteriovenous fistula is increased in a certain range; if the decibel is reduced, pipe blockage is possible, and the reason should be analyzed as soon as possible and intervention is given, so that pipe blockage is prevented, and the pain of a patient and economic loss are reduced; in addition, the arteriovenous fistula blood flow sound tester is convenient to popularize on a large scale and has huge economic benefit.
Owner:黄锡华
Intelligent monitoring device of electric furnace
InactiveCN108036400AAchieve monitoring effectAvoid major accidentsDetection of fluid at leakage pointLighting and heating apparatusElectric arc furnaceEngineering
The invention discloses an intelligent monitoring device of an electric furnace. The intelligent monitoring device comprises the electric furnace, and a function key and a display screen are arrangedon the electric furnace; one end of the electric furnace is connected with a flexible hose, and the flexible hose is externally sleeved with a detection cylinder; the detection cylinder is composed ofa shell, a top cover and a bottom cover, wherein the shell, the top cover and the bottom cover are of a double-layer structure; a cavity is formed between the outer layers and inner layers of the shell, the top cover and the bottom cover, the cavity is subjected to vacuum treatment, and sealing rings are correspondingly arranged between the top cover and the hose as well as between the bottom cover and the flexible hose; and a decibel meter is arranged on the inner wall of the detection cylinder, a controller is arranged on one side of the decibel meter, and an alarm is arranged on the outerwall of the detection cylinder. According to the intelligent monitoring device of the electric furnace, the flexible hose is externally sleeved with the detection cylinder, the decibel meter is arranged on the inner wall of the detection cylinder, when the fuel gas leaks, the corresponding sizzling noise is generated, then the decibel meter detects that the sound decibel inside the detection cylinder is within a set range, so that the alarm makes a sound, people are reminded of the gas leakage to make timely processing, and major accidents are avoided.
Owner:东台丰华炉业有限公司
Power supply base station and sound environment detection integrated device
InactiveCN109029709ASimple structureEasy to operateSubsonic/sonic/ultrasonic wave measurementContinuous useElectrical battery
The invention discloses a power supply base station and sound environment detection integrated device. The device comprises a bottom plate; a communication device and a storage battery are fixedly installed on the outer surface of one side of the upper end of the bottom plate; the communication device is located on one side of the storage battery; a decibel meter is fixedly installed on the outersurface of the other side of the upper end of the bottom plate; threaded rods are arranged on the outer surfaces of the front side and the rear side of the bottom plate; and a top plate is arranged atthe upper ends of the threaded rods. The power supply base station and sound environment detection integrated device is provided with the decibel meter, a first listening head, a second listening head, the threaded rods and threaded rings; a power supply base station and a sound environment detection device can be integrated, so that continuous use can be facilitated; detection points of the first listening head and the second listening head can be added, so that various numerical values can be obtained, and a mean of the numerical values is more accurate than the value of a single detectionpoint; and the integrated device also can be better fixed on the uneven ground, so that a better application prospect is brought.
Owner:南京昊发电力科技有限公司
Test device used for buzzer
InactiveCN102914358BSimple structureEasy to operateSubsonic/sonic/ultrasonic wave measurementEngineeringTest platform
Owner:宁波中策科银电子有限公司
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