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114results about How to "Improve temperature detection accuracy" patented technology
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Semiconductor device
ActiveUS20090230500A1High in temperature detection accuracyImprove temperature detection accuracyPhotovoltaicsDiodePhysicsSemiconductor components
A semiconductor device equipped with a primary semiconductor element and a temperature detecting element for detecting a temperature of the primary semiconductor element. The device includes a first semiconductor layer of a first conductivity type that forms the primary semiconductor element. A second semiconductor region of a second conductivity type is provided in the first semiconductor layer. A third semiconductor region of the first conductivity type is provided in the second semiconductor region. The temperature detecting element is provided in the third semiconductor region and is separated from the first semiconductor layer by a PN junction.
Owner:FUJI ELECTRIC CO LTD
Semiconductor device provided with temperature detection function
InactiveUS20050156267A1Improve antistatic performanceImprove temperature detection accuracySemiconductor/solid-state device detailsSolid-state devicesDevice materialSemiconductor device
A semiconductor device provided with a temperature detection function having a high temperature detection accuracy for improving the ESD resistance of a temperature detection diode. The semiconductor device has a semiconductor element. A temperature detection diode is used to detect the temperature of the semiconductor element and an ambient temperature of the semiconductor element. A protection diode is connected between a cathode of the temperature detection diode and a ground side of the semiconductor element when the semiconductor element is activated.
Owner:TOYOTA IND CORP
Semiconductor device temperature sensor and semiconductor storage device
ActiveUS20070036015A1Improve temperature detection accuracyReduce power consumptionDigital storageRefresh cycleDevice material
A semiconductor device temperature sensor produces a reference level for temperature detection from two or more reference levels of different temperatures to detect a temperature. The temperature sensor is applied for detecting the temperature of a semiconductor storage device having a memory unit which requires a refresh action. A refresh cycle control circuit provided in the semiconductor storage device controls the cycle of the refresh action for the memory unit in response to an output of the temperature sensor.
Owner:SOCIONEXT INC
Semiconductor device temperature sensor and semiconductor storage device
ActiveUS7492657B2Improve temperature detection accuracyReduce power consumptionDigital storageRefresh cycleSemiconductor storage devices
Owner:SOCIONEXT INC
Temperature sensor and temperature sensor attaching structure
ActiveUS20130288091A1Does not affect flexibilityDetectable heatingThermometer detailsThermometers using electric/magnetic elementsElectrical conductorEngineering
A flexible board includes a base layer, a wiring conductor layer that is located on the base layer, and a cover layer that is stacked over the base layer and covers the wiring conductor layer. A portion of the wiring conductor layer defines connecting portions that connect each of split electrodes of a flexible thermistor. The cover layer includes an opening that exposes the connecting portions, and receives the flexible thermistor. The split electrodes of the flexible thermistor are mounted on the connecting portions of the wiring layer. The height of the exposed surface of the flexible thermistor from the opening is substantially equal to the height of the surface of the cover layer.
Owner:MURATA MFG CO LTD
Method and device for measuring stator resistance and temperature detection method and device
ActiveCN103916064AGuaranteed uptimeFor accurate calculationsElectronic commutation motor controlVector control systemsMeasurement deviceControl system
The invention discloses a method for measuring stator resistance of a motor. The method comprises the following steps that the angle of a current vector function is obtained; the motor is controlled to operate in a current closed-loop mode according to a first d-shaft current applied to a shaft d of the motor to obtain a first steady voltage command of the motor; the motor is controlled to operate in a current closed-loop mode according to a second d-shaft current applied to the shaft d to obtain a second steady voltage command of the motor; the stator resistance of the motor is calculated according to the first d-shaft current, the second d-shaft current, the first steady voltage command and the second steady voltage command. The method can accurately measure the stator resistance of the motor, measurement precision of the stator resistance is greatly improved, and therefore temperature detection precision of the motor can be improved. The invention further discloses a temperature detection method of the motor, a device for measuring the stator resistance of the motor, a temperature detection device of the motor and a motor control system with the device for measuring the stator resistance of the motor or the temperature detection device.
Owner:GUANGDONG WELLING ELECTRIC MACHINE MFG +1
Appliance assembly with thermal fuse and temperature sensing device assembly
ActiveUS7920044B2Improve temperature detection accuracyLow costHeating/cooling contact switchesThermometer applicationsEngineeringElectrical and Electronics engineering
Owner:GROUP DEKKO
Temperature sensor mounting structure and battery module structure
ActiveCN101164181AEasy maintenanceImprove temperature detection accuracyCharging stationsElectric devicesElectrical batteryEngineering
A temperature sensor mounting structure for a battery module that is formed by connecting single cells together in series including: a temperature-measuring device that detects the temperature of the battery module; a covering device that covers the temperature-measuring device; and movement-restricting devices that are removably engaged with the battery module and restrict the movement of the covering device.
Owner:HONDA MOTOR CO LTD
Semiconductor temperature sensor
InactiveUS20100008398A1The output voltage is accurateImprove temperature detection accuracyThermometers using electric/magnetic elementsUsing electrical meansDrain currentCurrent mirror
Provided is a semiconductor temperature sensor capable of enhancing accuracy of temperature detection. A constant current circuit (13) of a current supply circuit (10a) causes a constant current to flow. A current mirror circuit of the current supply circuit (10a) supplies a temperature detection current from an output terminal thereof according to the constant current of the constant current circuit (13). A temperature detecting circuit (10b) outputs an output voltage according to the temperature detection current and a temperature. A PMOS transistor (19) of a leak current absorbing circuit (10c) has the same size and conductivity type as those of a PMOS transistor (15), and absorbs a leak current included in the temperature detection current (drain current of the PMOS transistor (15)).
Owner:SEIKO INSTR INC
Semiconductor device provided with temperature detection function
InactiveUS7462922B2Improve antistatic performanceImprove temperature detection accuracySemiconductor/solid-state device detailsSolid-state devicesSemiconductor deviceHigh heat
A semiconductor device provided with a temperature detection function having a high temperature detection accuracy for improving the ESD resistance of a temperature detection diode. The semiconductor device has a semiconductor element. A temperature detection diode is used to detect the temperature of the semiconductor element and an ambient temperature of the semiconductor element. A protection diode is connected between a cathode of the temperature detection diode and a ground side of the semiconductor element when the semiconductor element is activated.
Owner:TOYOTA IND CORP
Thermistor temperature detecting method based on DSP (Digital Signal Processing)
ActiveCN101922981ASimple structureImprove temperature detection accuracyThermometers using electric/magnetic elementsUsing electrical meansDigital signal processingHardware structure
The invention provides a thermistor temperature detecting method based on DSP, wherein a relational expression between T and lgR-T is obtained by utilizing the temperature of thermistor R-T characteristic detection power equipment and fitting a lgR-T curve in DSP. The method comprises the following steps of: converting the computation for lnR into the approximate operation of addition, subtraction, multiplication and division, obtaining a computing formula by adopting a high-item truncation approximate computing method, then determining a segmenting mode by adopting an error comparison method, and finally obtaining the lnR value of each segment by adopting a segmentation algorithm to realize accurate temperature computation. The temperature detecting precision is greatly improved by adopting the method; the method is simple to realize and has high operational speed; the hardware structure is simple, and the cost is saved.
Owner:WISDRI WUHAN AUTOMATION
Pressure detection unit and pressure sensor
InactiveUS20100186515A1High measurement accuracyHigh pressure accuracyFluid pressure measurement using piezo-electric devicesPiezoelectric/electrostriction/magnetostriction machinesEngineeringPiezoelectric resonators
A pressure detection unit includes: a first piezoelectric resonator element having a vibrating portion and a pair of base portions connected to both ends of the vibrating portion; a second piezoelectric resonator element having a resonating arm and a base portion integrated with one end of the resonating arm; a diaphragm having a pair of supporting portions to which the base portions of the first piezoelectric resonator element are bonded; and a base disposed to be opposed to the diaphragm. In the pressure detection unit, the base portion of the second piezoelectric resonator element is joined to one of the base portions of the first piezoelectric resonator element in an identical plane.
Owner:SEIKO EPSON CORP
Current temperature sensor circuit for CMOS switch and control method thereof
ActiveCN101762336AImprove temperature detection accuracyThermometers using electric/magnetic elementsUsing electrical meansCapacitanceAudio power amplifier
The present invention relates to a current temperature sensor circuit for CMOS switch and control method thereof. The sensor circuit comprises a voltage generation circuit, an operational amplifier, an input capacitor, a feedback capacitor, a resistance voltage divider, a control circuit and several MOS switches. The voltage generation circuit is connected with an external power supply to output the first interelectrode voltage and the second interelectrode voltage. An out-phase input of the operational amplifier is connected with the voltage generation circuit through the input capacitor to receive the first interelectrode voltage while the in-phase input receives the second interelectrode voltage; and the output of the operational amplifier is divided into two paths which respectively output reference voltage and positive temperature coefficient voltage. By utilizing dynamic element matching technique, the current temperature sensor circuit can generate an accurate amplifying coefficient for a small voltage difference delta Vbe, and generate accurate reference voltage independent of temperature and positive temperature coefficient voltage varying in direct proportion to temperature, thus effectively improving temperature detection accuracy of the temperature sensor.
Owner:SHANGHAI BEILING
Temperature Detector And Recording Apparatus Including The Same
ActiveUS20080174629A1Reduce efficiency of driveReduced responsivenessAnalogue/digital conversionThermometer with A/D convertersComparators circuitsEngineering
A temperature detector of the present invention includes a temperature sensor, a reference signal generation circuit, a level memory which rewritably stores therein a first signal level and a second signal level, a control circuit which controls the reference signal generation circuit so as to make a level of the reference signal change from the first signal level to the second signal level, a comparator circuit which compares the level of the reference signal and a level of the output signal, and a level rewriter which rewrites at least either one of the first signal level and the second signal level. When the level of the reference signal reaches the level of the output signal, the control circuit generates a detected temperature signal, and controls the level rewriter so as to change a range where a level of the reference signal changes.
Owner:BROTHER KOGYO KK
Distributed fiber temperature measurement method and device based on Raman scattering
InactiveCN105953941AGuaranteed reliabilityCancel noiseThermometers using physical/chemical changesFiberSignal-to-noise ratio (imaging)
The application discloses a distributed fiber temperature measurement method and device based on Raman scattering. The method comprises when incident light scatters in a sensing fiber, obtaining Raman backward scattered light information, wherein the Raman backward scattered light information includes a light intensity value, the Raman backward scattered light comprises stokes light and anti-stokes light, and the light intensity value of the anti-stokes light changes with temperatures; preprocessing the Raman backward scattered light information, and obtaining the temperature value of each monitoring point on the sensing fiber according to the corresponding relation between the light intensity value of the Raman backward scattered light and the temperatures; and when a temperature is monitored to change abruptly, obtaining the distance between a temperature abrupt change point and the position of emitting the incident light. The mode of the invention can effectively increase a signal to noise ratio, and improve temperature detection precision.
Owner:SHENZHEN ARISTONE TECH CO LTD
Wireless temperature control system
ActiveCN103455057AImprove temperature detection accuracyAccurate collectionThermometer detailsTemperature control using electric meansTemperature controlControl system
The invention discloses a wireless temperature control system, and relates to the field of temperature detection. The wireless temperature control system collects temperature in a granary and other places through a receiving end and a transmitting end, realizes accurate collection of the temperature through an electric signal amplification circuit, a digital signal amplitude modulator circuit, a transmission tuning circuit, a first CPU control unit, a second CPU control unit and the like, and also can display the detected temperature in real time through a digital display tube. When a user finds that the detected temperature is not within a standard working range, the user can regulate the temperature of the granary and the other places in time so as to avoid over-wet or over-dry or other conditions. The wireless temperature control system improves temperature detection accuracy, saves manpower, reduces cost, and meets various requirements in practical application.
Owner:CHONGQING JINLONG TECH
Induction heating cooker
ActiveUS7129449B2Reduce impactReduce temperature riseDomestic stoves or rangesLighting and heating apparatusWaveguideMagnetic flux
An induction heating cooker includes an infrared sensor for sensing an infrared intensity from a load pot, a waveguide for guiding infrared radiation from the load pot to the infrared sensor, a first magnetism-proofing unit and a second magnetism-proofing unit for reducing magnetic fluxes leaking from a heating coil. Placement of the waveguide at a position lower than an upper surface of the second magnetism-proofing unit reduces self-heating of the waveguide due to magnetic flux supplied from the heating coil. As a result, a temperature rise of the infrared sensor due to radiation heat from the waveguide can be reduced, and an accuracy of sensing a temperature by the infrared sensor can be improved.
Owner:PANASONIC CORP
Temperature sensor and temperature sensor attaching structure
ActiveUS9316546B2Does not affect flexibilityDetectable heatingThermometer detailsThermometers using electric/magnetic elementsElectrical conductorThermistor
A flexible board includes a base layer, a wiring conductor layer that is located on the base layer, and a cover layer that is stacked over the base layer and covers the wiring conductor layer. A portion of the wiring conductor layer defines connecting portions that connect each of split electrodes of a flexible thermistor. The cover layer includes an opening that exposes the connecting portions, and receives the flexible thermistor. The split electrodes of the flexible thermistor are mounted on the connecting portions of the wiring layer. The height of the exposed surface of the flexible thermistor from the opening is substantially equal to the height of the surface of the cover layer.
Owner:MURATA MFG CO LTD
Energy storage container temperature control system and temperature control method
PendingCN110994060AGuaranteed operating storage temperatureReduce usageCells structural combinationTemperature controlElectrical battery
The invention provides an energy storage container temperature control system and a temperature control method. The temperature control system comprises an air inlet part, an air outlet part, a control part and an air duct part in a box body, and an external air inlet module and an air outlet of an air conditioner are jointly used as an air inlet part. The external air inlet module is composed ofa first electric shutter installed on the air inlet channel and a plurality of air inlet fans. An external air outlet module and an air inlet of each air conditioner jointly serve as an air outlet part, the external air inlet module is composed of a second electric shutter installed on an air outlet channel and a plurality of air outlet fans, an air outlet of each air conditioner is communicated with an air inlet of an air duct part, and an air inlet of each air conditioner is communicated with an air outlet of the air duct part. The system power consumption is greatly reduced while the battery operation storage temperature is ensured, the working efficiency of the energy storage system is effectively improved, and the product income is improved; and meanwhile, the air-conditioner utilization rate is reduced, and the air-conditioner service life is prolonged.
Owner:江苏安靠能源装备有限公司
Intelligent motor control protector
InactiveCN105610128AHigh precisionImprove accuracyEmergency protective circuit arrangementsPhase currentsMicrocontroller
The invention discloses an intelligent motor control protector which comprises a microcontroller, a power supply module, a reset circuit and an RS485 communication circuit. The input end of the microcontroller is connected to a Hall sensor circuit, a voltage acquisition module, a data acquisition module, a three-phase phase sequence detection circuit, a temperature sampling circuit, an operation screen circuit and an anti-interference circuit. The output end of the microcontroller is connected to a voice output module, a relay operation module and a control indication lamp. The voltage acquisition module comprises a phase voltage detection circuit and a voltage conditioning circuit. The current acquisition module comprises a phase current detection circuit and a surge protection circuit. The voice output module comprises a power amplifying circuit and a loudspeaker reminding circuit. The relay operation module comprises a relay protection circuit and a motor module. The intelligent motor control protector has the advantages of novel design, simple structure, complete function and strong practicability, and a three-phase motor is protected through detecting voltage, current, temperature, phase sequence and bearing position information.
Owner:XIAN GALAXY POWER INTELLIGENT ELECTRIC
Human body temperature detection method, system and device and thermal infrared image processor
PendingCN111562016AQuick groomingTimely exclusionImage enhancementImage analysisHuman bodyAcquisition apparatus
The invention discloses a human body temperature detection method, system and device and a thermal infrared image processor. The method comprises the following steps of: acquiring a first image acquired by thermal infrared image acquisition equipment; determining a first image area containing a specified human body part of a target object in the first image; and determining the temperature of thespecified human body part according to the image information of the first image area. Temperature detection can be carried out on designated human body parts of multiple target objects at the same time, temperature detection is carried out on the designated human body parts of the target objects, the temperature detection precision is high, high-temperature individuals can be rapidly removed in time at the same time, and centralized infection or secondary infection is avoided. Meanwhile, non-inductive detection is carried out by acquiring the first image acquired by thermal infrared image acquisition equipment, and people flow can be rapidly evacuated without staying. Moreover, temperature detection is carried out on designated human body parts of the target objects, interference of an environment high-temperature object is avoided, false alarm of high temperature of hair exposed to the sun is avoided, and wrong detection and false detection are eliminated.
Owner:北京都是科技有限公司
Human body temperature detection method, system and device and thermal infrared image processor
InactiveCN111189544AQuick groomingTimely exclusionImage enhancementImage analysisHuman bodyAcquisition apparatus
The invention discloses a human body temperature detection method, system and device and a thermal infrared image processor. The method comprises the following steps: acquiring a first image acquiredby thermal infrared image acquisition equipment; determining a first image area containing a specified human body part of a target object in the first image; and determining the temperature of the specified human body part according to the image information of the first image area. Temperature detection can be carried out on designated human body parts of multiple target objects at the same time,temperature detection is carried out on the designated human body parts of the target objects, the temperature detection precision is high, high-temperature individuals can be rapidly removed in timeat the same time, and centralized infection or secondary infection is avoided. Meanwhile, non-inductive detection is carried out by acquiring the first image acquired by the thermal infrared image acquisition equipment, and people crowd can be rapidly evacuated without staying. Moreover, temperature detection is carried out on the designated human body part of the target object, interference of anenvironment high-temperature object is avoided, and false detection and false detection are eliminated.
Owner:北京都是科技有限公司
Projecting device
InactiveCN102621788AImprove performanceExtend your lifeProjectorsCooling/ventilation/heating modificationsElectrical resistance and conductanceThree stage
The invention relates to a projecting device, which comprises a control unit, a heat dissipating unit, a sensing module group and an airflow through-hole, wherein the sensing module group is used for detecting objects at the airflow through-hole; the control unit comprises a fixed resistor; the fixed resistor has a first temperature threshold, a second temperature threshold and a third temperature threshold; the third temperature threshold is larger than the second temperature threshold which is larger than the first temperature threshold; when detecting that an object exists at the airflow through-hole, the sensing module group sends a signal to the control unit, so as to enable the temperature of the fixed resistor to rise; when the temperature of the fixed resistor reaches the first temperature threshold, a first overheat preventing mechanism is stated; when the temperature of the fixed resistor reaches the second temperature threshold, a second overheat preventing mechanism is stated; when the temperature of the fixed resistor reaches the third temperature threshold, a third overheat preventing mechanism is stated. The projecting device disclosed by the invention has the advantages that when the internal temperature of the projecting device is over high, three stages of protective devices are triggered, so that the efficiency of an electronic circuit is steady and the life of a lamp bulb is prolonged.
Owner:QISDA OPTRONICS (SUZHOU) CO LTD +1
Neck massager and temperature detection method thereof
ActiveCN111558144AImprove temperature detection accuracyElectrotherapySurgeryHuman bodyTemperature control
The invention discloses a neck massager and a neck massager temperature detection method. The neck massager comprises a massager body, a heating element, a temperature detection element and a controlcircuit. The heating element is arranged on the massager body and is used for heating the neck of a human body; the temperature detection element is arranged on the massager body and used for detecting the temperature of the neck of the human body; the control circuit is arranged on the massager body, electrically coupled with the heating element and the temperature detection element and used forresponding to the condition that the heating element is not in the working state and controlling the temperature detection element to detect the neck temperature of the human body so as to obtain thebody temperature of the neck massager wearer in the natural state. By means of the above method, the body temperature of a neck massager wearer in a natural state can be obtained, the influence of heating of the heating element on temperature detection is avoided, and the temperature detection accuracy is improved.
Owner:GUANGDONG SKG INTELLIGENT TECH CO LTD
Contact box with built-in over-temperature protection device
ActiveCN103364100ASimple structureNovel and reasonable designThermometer detailsTransmission systemsMechanical engineeringWireless connectivity
Owner:浙江江山华安电器制造有限公司
Semiconductor device and data generation method
ActiveCN102735360AImprove temperature detection accuracyInhibition amountThermometers using electric/magnetic elementsUsing electrical meansPower semiconductor deviceComputer science
The invention provides a semiconductor device and a data generation method. Improvement in the accuracy of a temperature sensor is aimed at, suppressing the number of the test temperature in a test process. The semiconductor device comprises a coefficient calculation unit which calculates up to the N-th order coefficient (N is an integer equal to or greater than one) of a correction function as an N-th order approximation of a characteristic function indicating correspondence relation of temperature data measured by a temperature sensor unit and temperature, based on N+1 pieces of the temperature data including a theoretical value at a predetermined temperature in the characteristic function and N measured values of the temperature data measured by the temperature sensor unit at N points of temperature; and a correction operation unit which generates data including information on temperature, by performing calculation using the correction function to which the coefficients calculated are applied, based on temperature data measured by the temperature sensor unit.
Owner:RENESAS ELECTRONICS CORP
Light-emitting organic metal silver compound with binary emission as well as preparation and application thereof
ActiveCN108864156ASynthetic conditions are mildThe synthesis process is simpleGroup 1/11 organic compounds without C-metal linkagesSilver organic compoundsHigh energySolvent
The invention relates to a series of silver halogen series compounds with a one-dimensional chain-shaped structure. A chemical formula is [Ag2LX2]n or [Ag2X2L]n, wherein n is a non-zero natural number; X is selected from halogen atoms including Cl, Br, I and the like; L is 1-methyl-4-(3-(5-phenyl-pyrazole)yl)pyridine. Along the changes of temperature, a certain linear function relation is formed between a ratio of a low-energy emission peak and high-energy emission strength of the light-emitting organic metal silver compound with the binary emission, and the temperature. Preparation comprisesthe following steps: (1) uniformly stirring an organic ligand and AgX in a solvent according to a certain mass ratio and carrying out solvothermal reaction; (2) keeping constant temperature for 3 to 5days under the temperature of 80 to 120 DEG C and cooling to 30 DEG C at the cooling speed of 3 to 5 DEG C / h, so as to obtain a lot of light yellow columnar crystals. The compound provided by the invention has good thermal stability, and the temperature detection accuracy can be effectively improved through self-correction light-emitting sensing of the temperature; the compound can be used as a self-correction molecular-based light-emitting thermometer, and a temperature testing range is relatively wide. The preparation cost is relatively low, the process is simple and the energy consumptionis low.
Owner:SHANTOU UNIV
Online continuous detecting device of butylbenzene rubber reaction converting rate and calculating method thereof
InactiveCN101936866AHigh precisionImprove performanceSpecific gravity by measuring pressure differencesDifferential pressureMeasurement point
The invention discloses an online continuous detecting device of a butylbenzene rubber reaction converting rate. A section of vertical measuring pipe is arranged on an outlet material pipeline of a butylbenzene rubber device polymerization reactor by a pipe reducer and a rubber cement original pipeline; the large end of the pipe reducer is in seal communication with the vertical measuring pipe, and the small end of the pipe reducer is in seal communication with the rubber cement original pipeline; two pressure measuring points are extracted from the vertical measuring pipe, and a tiny differential pressure transmitter is used for measuring the pressure difference of the vertical pipeline between the two measuring points through which the rubber cement flows; a butylbenzene rubber cement temperature measuring point is arranged in the center in the vertical measuring pipe in the middle of the two pressure measuring points, and a temperature transmitter A is used for measuring rubber cement temperature; and an ambient temperature measuring point is arranged near the tiny differential pressure transmitter, and an ambient temperature transmitter B is used for measuring the ambient temperature. The three measured signal data are transmitted to a computer system for calculating. The invention adopts a conventional instrument and has the advantages of stable and reliable performance, less delay time, rapid response time, good closed loop control effect, convenient maintenance and long service life.
Owner:SHANGHAI NORMAL UNIVERSITY +1
RTD temperature detection system
InactiveCN103808424AImprove temperature detection accuracyImprove anti-interference abilityThermometers using electric/magnetic elementsUsing electrical meansLED displayInterference resistance
The invention belongs to temperature detection system technical field and especially relates to a RTD temperature detection system with high detection precision, a powerful anti-interference capability, and low cost. The RTD temperature detection system comprises a signal conditioning module, an A / D sampling and converting module, an RS485 serial communication module, an LED display module, and a DSP chip. The structural features of the RTD temperature detection system are that the ports of the DSP chip are connected with the port of the RS485 serial communication module, the port of the LED display module, and the output port of the A / D sampling and converting module, and that the input port of the A / D sampling and converting module is connected with the output port of the signal conditioning module.
Owner:姜韫英
Motor temperature control test system based on peak clipping pulse wave modulation control
InactiveCN104931878ASimple structureEasy to operateDynamo-electric machine testingTemperature controlElectric machine
The invention discloses a motor temperature control test system based on peak clipping pulse wave modulation control, comprising a single chip microcomputer (1), a power supply module (2), a motor rotating speed control module (3), a rotating speed signal processing module (5), a display (7), and a temperature storage module (10) which are all in connection with the single chip microcomputer (1), a motor (4) to be detected in connection with the motor rotating speed control module (3), a speed transmitter (6) and a temperature sensor (8) which are in connection with the motor (4) to be detected, and a bandwidth-limited circuit (9) in connection with the temperature sensor (8); the power supply module (2) is respectively in connection with the motor rotating speed control module (3) and the temperature storage module (10) ; a peak clipping pulse wave modulation circuit (11) is arranged between the single chip microcomputer (1) and the bandwidth-limited circuit (9). Through the peak clipping pulse wave modulation circuit, the motor temperature control test system can increase stability, and thereby accurately control motor temperatures.
Owner:CHENGDU CHENGBANG POWER TEST INSTR
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