CN203534846U - Motor multiparameter real-time data acquisition system - Google Patents
Motor multiparameter real-time data acquisition system Download PDFInfo
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- CN203534846U CN203534846U CN201320669044.4U CN201320669044U CN203534846U CN 203534846 U CN203534846 U CN 203534846U CN 201320669044 U CN201320669044 U CN 201320669044U CN 203534846 U CN203534846 U CN 203534846U
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Abstract
The utility model discloses a motor multiparameter real-time data acquisition system. The system belongs to the technical field of motor detection. The system is provided with a plurality of vibration sensors connected with a vibration signal conditioning circuit on a motor housing. A circuit wiring board of the motor is connected with a three-phase circuit provided with current transformers connected with a current signal conditioning circuit. The periphery of a winding of the motor is provided with a plurality of temperature sensors connected with the temperature signal conditioning circuit. The vibration signal conditioning circuit, the current signal conditioning circuit and the temperature signal conditioning circuit are connected with a data acquisition card. The data acquisition card is connected with a computer. The system enables real-time vibration, current and temperature signal monitoring, enables data transmission to an upper computer, and provides a basis for motor fault diagnosis and health assessment.
Description
Technical field
The utility model relates to motor multiparameter real-time data acquisition system, by data collecting card, can, vibration, electric current and the temperature signal Real-time Collection of reflection motor running condition to computing machine, for follow-up For Diagnosing Faults of Electrical and health performance, assess foundation is provided.
Background technology
When a certain parts of motor break down, in the characteristic quantities such as vibration, temperature, electric current, all can embody to some extent, the robustness that contributes to improve accuracy rate of diagnosis and diagnostic system is analyzed and diagnosed to the data message of comprehensive various different sensors.
Select modal three class signals in For Diagnosing Faults of Electrical: vibration signal, current signal, temperature signal.The motor most common failures such as this three classes signal separately or its combination reflects rotor imbalance, bias, wearing and tearing, bearing fault, the disconnected bar of cage modle winding, turn-to-turn short circuit, winding is overheated, iron core is overheated.Normal state and fault case in motor operation measure respectively zero load, and semi-load, vibration signal, stator current signal and temperature signal in three kinds of situations of full load, utilize these data just can realize the assessment of motor health performance and fault diagnosis.
Existing motor multi parameter tester can only the form by waveform, pointer or numeral be presented at test parameter in instrument, or failure code is shown.Which kind of situation no matter, researchist cannot obtain real-time motor service data, thereby carries out next step information processing and analysis.
Utility model content
In order to overcome existing motor multi parameter tester, test parameter can only be presented in instrument the form by waveform, pointer, numeral or failure code, and test data can not be sent in real time to the deficiency on computing machine, the utility model provides a kind of motor multiparameter real-time data acquisition system, this system can not only Real-Time Monitoring vibration, temperature, current signal, and these data can be sent to host computer, for For Diagnosing Faults of Electrical and health Evaluation provide foundation.
The utility model solves the technical scheme that its technical matters adopts:
Motor multiparameter real-time data acquisition system of the present utility model is provided with some vibration transducers that are connected on vibration signal modulate circuit on the casing of motor; On the electric crossover board of motor, be connected with three-phase circuit, wherein on three-phase circuit, be respectively equipped with the current transformer being connected on current signal conditioning circuit; At the winding edge of motor, be provided with several and be connected to the temperature sensor on temperature signal regulation circuit; Wherein vibration signal modulate circuit, current signal conditioning circuit and temperature signal regulation circuit are connected on data collecting card, and described data collecting card is connected on computing machine.
Owing to having adopted said structure, motor is selected Y160M2-2, and rated power is that 15kw, rated speed are that 2930r/min, rated voltage are AC380V, and rated current is 29A.Vibration measurement adopts ZRCD-21 supervision speed pickup, is arranged on side and the end face of motor case, is screwed, and horizontal measuring point is 90 ° of angles with vertical measuring point, gathers respectively the original vibration signal of horizontal direction and vertical direction.Current signal detects and adopts LMK-0.66 Verification of Measuring Current Transformer, is arranged on electric power incoming line one side, measures respectively U, V, W threephase stator current signal.LMK-0.66 Verification of Measuring Current Transformer current ratio 800:5, capacity 10VA, 0.5 grade of precision.Temperature signal measurement adopts platinum resistance pt100, temperature-measuring range-50 ℃～+ 850 ℃, temperature measurement accuracy <0.5 ℃, 0.1 ℃ of resolution.Platinum resistance pt100 is embedded in the gap of winding and casing, and 4 pt100 are installed at the first-class interval of circumference, bores a hole and draw 4 resistance and carry out temperature survey on casing.Motor multiparameter real-time data acquisition system of the present utility model is realized the real-time data acquisition of motor oscillating, stator current, winding temperature three class parameters based on LABVIEW, data collecting card, sensor, signal conditioning circuit; Utilize ZRCD-21 to monitor casing vibration, stator phase current, the winding temperature of measuring respectively Y160M2-2 type threephase asynchronous by speed pickup, LMK-0.66 Verification of Measuring Current Transformer, Pt100 platinum resistance.By signal conditioning circuit, convert voltage signal to, access data capture card USB-DMP609, through USB, be connected to host computer, utilize virtual instrument LABVIEW display temporal evolution curve on computers, and preserving in real time image data, signal time length and sample frequency user oneself sets.Motor multiparameter real-time data acquisition system of the present utility model, can not only Real-Time Monitoring vibration, electric current, temperature signal, and these data can be sent to host computer, for For Diagnosing Faults of Electrical and health Evaluation provide foundation.
Motor multiparameter real-time data acquisition system of the present utility model, described vibration transducer comprises the first vibration transducer of detection level direction vibration on the side of being located at motor case and the second vibration transducer of being located at detection of vertical direction vibration on motor case end face; Between the measuring point of the measuring point of wherein said the first vibration transducer and the second vibration transducer, be 90 ° of angles, described the first vibration transducer and the second vibration transducer are connected on data collecting card by vibration signal modulate circuit respectively.
Owing to having adopted said structure, vibration measurement adopts ZRCD-21 supervision vibration transducer, the second vibration transducer that is wherein respectively the first vibration transducer of detection level direction vibration on the side of being located at motor case and is located at detection of vertical direction vibration on motor case end face; Horizontal direction vibration transducer and vertical vibration sensor are all screwed on the casing of motor, signal end is drawn by four-core aviation plug, because the output signal of vibration transducer is voltage signal, so vibration signal modulate circuit be chosen or do not chosen to the output signal of vibration transducer can depending on actual conditions.Motor multiparameter real-time data acquisition system described in this patent in actual applications, if some lower-powered motors are carried out to data acquisition, during its work, motor oscillating amplitude is less, the voltage signal of vibration transducer output may be millivolt level, just need amplifying circuit (being vibration signal modulate circuit), consider practicality and the ubiquity of this utility patent, in the one-piece construction figure of motor multiparameter real-time data acquisition system, increase a vibration signal modulate circuit, arrange a variable gain amplifier, faint voltage signal is amplified to volt level.The Y160M2-2 type threephase asynchronous that the utility model adopts, its power reaches 15kw, and during work, Oscillation Amplitude is large, and the output signal of vibration transducer can reach 1V left and right, larger while breaking down.Therefore the utility model can not need just vibration transducer output signal can be directly connected on data collecting card by vibration signal modulate circuit.Directly be connected in the vertical direction analog input end AIN1 and the AIN2 of data acquisition card with the pin of the vibration transducer of horizontal direction, pin connects data collecting card pin 17～19 altogether, the frequency response range of ZRCD-21 is 10～1000HZ, corresponding motor speed 600～6000r/min, its sensitivity is 280mv/cm/s.This system can not only Real-Time Monitoring vibration signal, and these data can be sent to host computer, for For Diagnosing Faults of Electrical and health Evaluation provide foundation.
Motor multiparameter real-time data acquisition system of the present utility model, stator side at motor is connected on three-phase circuit by electric crossover board, wherein on every circuitry phase, be equipped with current transformer, three current transformers are connected on data collecting card by current signal conditioning circuit respectively, and the resistance wherein arranging in current signal conditioning circuit is connected with each current transformer respectively.
Owing to having adopted said structure, stator current signal detects and adopts LMK-0.66 Verification of Measuring Current Transformer, and current ratio 800:5, is arranged on electric power incoming line one side, measures respectively U, V, W threephase stator current signal.Because the input signal of data collecting card is-5～+ 5v, therefore, current signal need to be converted to voltage signal, at the output terminal of the measuring current transformer of LMK-0.66, connect respectively 10 Ω resistance; From current ratio and the current signal conditioning circuit of LMK-0.66, the scope that can measure electron current is 0～80A, even if consider the factors such as starting current, overload current, also meets the measurement requirement of this motor stator electric current completely.Three 10 Ω resistance altogether, its altogether the other end of 17～19, three 10 Ω resistance of pin of termination data collecting card meet respectively analog input end AIN3, AIN4 and the AIN5 of data collecting card.Make this system can not only Real-Time Monitoring current signal, and these data can be sent to host computer, for For Diagnosing Faults of Electrical and health Evaluation provide foundation.
Motor multiparameter real-time data acquisition system of the present utility model, temperature sensor is four platinum resistance that are distributed on motor circumferencial direction, make to be 90 ° of angles between two adjacent platinum resistance, described platinum resistance is embedded in the gap of motor winding and casing in advance, four platinum resistance are connected on data collecting card by temperature signal regulation circuit respectively, and the resistance wherein arranging in temperature signal regulation circuit is connected with each platinum resistance respectively.
Owing to having adopted said structure, temperature signal measurement adopts four platinum resistance pt100, platinum resistance pt100 is embedded in the gap of winding and casing, on circumference, uniformly-spaced install 4, on casing, bore a hole and draw platinum resistance pt100, connect with the resistance of 4 100 Ω respectively, add 5v voltage, this modulate circuit changes motor winding temperature to be converted to the voltage signal at platinum resistance pt100 two ends, thereby carries out temperature survey.Relation in temperature signal regulation circuit between temperature and resistance meets formula (1).
R t =
R 0 (1+3.9083*10
-3*
t-5.775*10
-7*
t 2) （1）
In formula (1)
r 0 for the resistance value of platinum resistance at 0 ℃,
r 0 =100 Ω.The temperature of motor winding, according to the temperature classification of insulating material, maximum operating temperature is 180 ℃ of H level, platinum resistance can reach 168.46 Ω.By temperature signal regulation circuit, the dividing potential drop anode of platinum resistance pt100 is analog input end AIN6, AIN7, AIN8 and the AIN9 of access data capture card respectively; Voltage negative terminal altogether, connects the pin 17～19 of data collecting card.Thermal resistance is in temperature
ttime resistance and dividing potential drop
v i between relation meet formula (2).
R t =100*
v i / (5-
v i ) （2）
In formula (2), be the dividing potential drop at platinum resistance two ends, data collecting card gathers after this dividing potential drop, and substitution formula (2) calculates platinum resistance pt100 in temperature
ttime resistance value, substitution formula (1) accounting temperature; Formula (1) and formula (2), by the Formula Node in LABVIEW, can directly show with temperature value after calculating on the front panel of motor multiparameter real-time data acquisition system.This system can not only Real-Time Monitoring temperature signal, and these data can be sent to host computer, for For Diagnosing Faults of Electrical and health Evaluation provide foundation.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model have 2 points.
1, motor multiparameter real-time data acquisition system of the present utility model, can not only Real-Time Monitoring vibration, electric current, temperature signal, and these data can be sent to host computer, can observe intuitively the current operation conditions of motor by the interface of LABVIEW.
2, motor multiparameter real-time data acquisition system of the present utility model, the data that gather can be kept on hard disc of computer in real time, for use in the operational application relevant to motor, also can carry out on this basis the researchs such as motor on-line fault diagnosis and health performance assessment.
Accompanying drawing explanation
Fig. 1 is the one-piece construction figure of motor multiparameter real-time data acquisition system of the present utility model.
Fig. 2 be in Fig. 1 vibration transducer layout and with the wiring diagram of data collecting card.
Fig. 3 be in Fig. 1 current sensor layout, change-over circuit and with the wiring diagram of data collecting card.
Fig. 4 be in Fig. 1 temperature sensor layout, change-over circuit and with the wiring diagram of data collecting card.
Fig. 5 is the Software for Design process flow diagram of the multiparameter of motor shown in Fig. 1 real-time data acquisition system.
Mark in figure: 1-motor, 2-data collecting card, 3-computing machine, 4-the first platinum resistance, 5-the second platinum resistance, 6-the 3rd platinum resistance, 7-the 4th platinum resistance, 8-temperature signal regulation circuit, 9-vibration signal modulate circuit, 10-circuit signal modulate circuit, 11-the first vibration transducer, 12-the second vibration transducer, 13-the first current transformer, 14-the second current transformer, 15-the 3rd current transformer, 16-electric crossover board, 17-USB data line, 18-the first resistance, 19-the second resistance, 20-the 3rd resistance, 21-the 4th resistance, 22-the 5th resistance, 23-the 6th resistance, 24-the 7th resistance.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figures 1 to 5, motor multiparameter real-time data acquisition system of the present utility model, on the casing of motor 1, be provided with some vibration transducers that are connected on vibration signal modulate circuit 9, wherein said vibration transducer comprises the first vibration transducer 11 of detection level direction vibration on the side of being located at motor 1 casing and the second vibration transducer 12 of being located at detection of vertical direction vibration on motor 1 casing end face; Between the measuring point of the measuring point of wherein said the first vibration transducer 11 and the second vibration transducer 12, be 90 ° of angles, described the first vibration transducer 11 and the second vibration transducer 12 are connected on data collecting card 2 by vibration signal modulate circuit 9 respectively; Stator at motor 1 is connected on three-phase circuit by electric crossover board 16, wherein on every circuitry phase, be equipped with current transformer, three current transformers are respectively the first current transformer 13, the second current transformer 14 and the 3rd current transformer 15, three current transformers are connected on data collecting card 2 by current signal conditioning circuit 10 respectively, and wherein the resistance of current signal conditioning circuit 10 interior settings is connected with each current transformer respectively; At the winding edge of motor 1, be provided with several and be connected to the temperature sensor on temperature signal regulation circuit 8; Wherein temperature sensor is four platinum resistance that are distributed on motor 1 circumferencial direction, be specially the first platinum resistance 4, the second platinum resistance 5, the 3rd platinum resistance 6 and the 4th platinum resistance 7, wherein between any two two adjacent platinum resistance, be 90 ° of angles, described platinum resistance is embedded in the gap of motor 1 winding and casing in advance, four platinum resistance are connected on data collecting card 2 by temperature signal regulation circuit 8 respectively, and wherein the resistance of temperature signal regulation circuit 8 interior settings is connected with each platinum resistance respectively; Wherein vibration signal modulate circuit 9, circuit signal modulate circuit 10 and temperature signal regulation circuit 8 are connected on data collecting card 2, described data collecting card 2 is connected on computing machine 3 by usb data line 17, its Computer 3 is as host computer, utilize virtual instrument LABVIEW display temporal evolution curve, and preserving real-time data collection, signal time length and sample frequency user oneself sets.
Motor multiparameter real-time data acquisition system of the present utility model, motor 1 is selected Y160M2-2, and rated power is that 15kw, rated speed are that 2930r/min, rated voltage are AC380V, and rated current is 29A.Vibration measurement adopts ZRCD-21 to monitor with speed pickup 11 and 12, is arranged on side and the end face of motor case, is screwed, and horizontal measuring point is 90 ° of angles with vertical measuring point, gathers respectively the original vibration signal of horizontal direction and vertical direction.Temperature signal measurement adopts platinum resistance pt100, temperature-measuring range-50 ℃～+ 850 ℃, temperature measurement accuracy <0.5 ℃, 0.1 ℃ of resolution.Platinum resistance pt100 is embedded in the gap of winding and casing, and 4 platinum resistance pt100 are installed at the first-class interval of circumference, bores a hole and draw 4 resistance and carry out temperature survey on casing.Current signal detects and adopts LMK-0.66 Verification of Measuring Current Transformer 13,14 and 15, is arranged on electric power incoming line one side, measures respectively U, V, W threephase stator current signal.LMK-0.66 Verification of Measuring Current Transformer current ratio 800:5, capacity 10VA, 0.5 grade of precision.
Vibration measurement adopts ZRCD-21 supervision speed pickup, as shown in Figure 2.The first vibration transducer 11 of horizontal direction and the second vibration transducer 12 of vertical direction are all screwed on the casing of motor 1, and signal end is drawn by four-core aviation plug.Because vibration transducer is output as standard voltage signal, therefore vibration transducer undesired signal modulate circuit is directly connected with data collecting card 2.The pin 1 of vertical direction and horizontal direction vibration transducer is directly connected to analog input end AIN1 and the AIN2 of data acquisition card 2, and pin 4 connects data collecting card 2 pins 17～19 altogether.The frequency response range of ZRCD-21 is 10～1000HZ, corresponding motor speed 600～6000r/min, and its sensitivity is 280mv/cm/s.
As shown in Figure 3, stator current signal detects and adopts LMK-0.66 Verification of Measuring Current Transformer, is respectively the first current transformer 13, the second current transformer 14 and the 3rd current transformer 15, current ratio 800:5.Be arranged on electric power incoming line one side, measure respectively U, V, W threephase stator current signal.Because the input signal of data collecting card 2 is-5～+ 5v, therefore, current signal need to be converted to voltage signal, in LMK-0.66 Verification of Measuring Current Transformer 13,14, be connected respectively 10 Ω resistance 18,19 and 20 with 15 output terminal.From current ratio and the signal conditioning circuit of LMK-0.66, the scope that can measure electron current is 0～80A.Even if consider the factors such as starting current, overload current, also meet the measurement requirement of this motor stator electric current completely.Altogether, it is 17～19, three 10 Ω resistance 18,19 of pin of termination data collecting card 2 and analog input end AIN3, AIN4 and the AIN5 that 20 the other end connects respectively data collecting card 2 altogether for three 10 Ω resistance 18,19 and 20 one end.
As shown in Figure 4, temperature signal measurement adopts four platinum resistance pt100, be respectively the first platinum resistance 4, the second platinum resistance 5, the 3rd platinum resistance 6 and the 4th platinum resistance 7, platinum resistance pt100 is embedded in the gap of winding and casing, on circumference, uniformly-spaced install 4, on casing, bore a hole and draw platinum resistance pt100, each pt100 platinum resistance is connected with the resistance of 100 Ω respectively, add 5v voltage, this resistance is converted to the resistance variations of pt100 the change in voltage at pt100 two ends, thereby carries out temperature survey.
Wherein temperature signal measurement adopts Pt100 platinum resistance, and the relation between temperature and resistance meets 1.
R t =R 0 (1+3.9083*10 -3 *t-5.775*10 -7 *t 2 ) （1）
In formula 1
r 0 for the resistance value of platinum resistance at 0 ℃,
r 0 =100 Ω.The temperature of motor winding, according to the temperature classification of insulating material, maximum operating temperature is 180 ℃ of H level, platinum resistance can reach 168.46 Ω.Pt100 platinum resistance can adopt the change-over circuit shown in Fig. 4.The dividing potential drop anode of four Pt100 platinum resistance is analog input end AIN6, AIN7, AIN8 and the AIN9 of access data capture card 2 respectively; Voltage negative terminal altogether, connects the pin 17～19 of data collecting card 2.Thermal resistance is in temperature
ttime resistance and dividing potential drop
v i between relation meet formula 2.
R t =100*v i / (5- v i ) （2）
In formula 2, be the dividing potential drop at platinum resistance two ends, data collecting card 2 gathers after this dividing potential drop, and substitution formula 2 calculates pt100 in temperature
ttime resistance value, substitution formula 1 accounting temperature.Formula 1 and formula 2, by the Formula Node in LABVIEW, can directly show with temperature value after calculating on the front panel of motor multiparameter real-time data acquisition system.
Data acquisition system (DAS) comprises USB-DMP609 data collecting card 2 and computing machine 3, by usb data line 17, data collecting card 2 is connected to computing machine 3.Virtual instrument LABVIEW shows vibration, electric current, temperature signal temporal evolution curve or numerical value, and preserves image data.
Data collecting card USB-DMP6092 is 16 A/D data collecting cards of a USB2.0 bus, there are the 16 single-ended analog inputs in tunnel, built-in programmed gain control, plate carries fifo memory system, the internal clocking that can carry out set point number or circle collection triggers the highest sample frequency of high-speed and continuous sampling and reaches 250KHz, all be operated in software pattern is set, two 12, tunnel D/A outputs, the omnidistance control of switching value 16 tunnel I/O, and can position arrange and read position, one tunnel 16 digit counters and frequency meter, the pulse of one distance control wide frequency ranges (550Hz～65KHz) and the output of various analog waveform, the two adjustable fundamental frequency width modulation of distance control (PWM) devices.Adopt usb bus, support plug and play.USB-DMP609 data collecting card is non-NI data collecting card, when with LabVIEW coding, can not directly call DAQ, but need to write in addition relevant function, and need to be encapsulated as dynamic link library .DLL.In the design, DMP.dll has comprised and opens data collecting card function HANDLE OpenDevice (unsigned char), hyperchannel scanning function Dmp609_Scan_Ad (), clock and trigger hyperchannel continuous sampling function Dmp609_Timer_Scan_Ad () and read capture card memory board and contain data function Dmp609_Read_Ad () etc.
The development environment of LABVIEW is divided into three parts: front panel, program panel, icon/connectivity port.Front panel is exactly graphic user interface, shows vibration signal, U, V, W threephase stator electric current, the four road temperature signals of vertical and level with the form of curve.Program panel is exactly program editing interface, and program flow diagram as shown in Figure 5.
In the Software for Design of data acquisition system (DAS), mainly used and opened data collecting card function OpenDevice, hyperchannel scanning continuous sampling function Dmp609_Timer_Scan_Ad and read data function Dmp609_Read_Ad () in capture card memory board.OpenDevice opens data card, and data handle is passed to Dmp609_Timer_Scan_Ad () and Dmp609_Read_Ad (), and hyperchannel scanning function and read after capture card data function is received data handle just can operate the data card of appointment.Hyperchannel scanning function continuous sampling function has 7 parameters, has comprised data handle, scans initial passage, scanning stops passage, gain is set, sample recurrent state, clock period and function return value.Due to needs 9 circuit-switched data 2 road vibration signals, 3 road current signals, 4 road temperature signals, the interface of the data collecting card that is linked in sequence, initial channel setting is 1, stops channel setting 9.In image data process need continuous acquisition, recurrent state is set to 1.Reading capture card memory board data function has 4 parameters, has card service data handle, hits, data-switching array and function to return.
At hyperchannel scan clock, trigger under continuous sampling mode, call the Dmp609_Timer_Scan_Ad function in the DMP609.DLL built-in function of c language compilation, by internal clocking, triggered, to setting passage, carry out scanning sample, from initial passage 1, the adjacency channel time difference is less than 15
us, sequential sampling finishes to stopping passage 9.Simultaneous Sampling Data sequentially writes FIFO, call again the Dmp609_Read_Ad function sense data in DLL built-in function, because the channel value data area collecting is 0～65535, for practical requirement also needs to use Formula Node in LABVIEW, each paths data that collect are carried out to corresponding A/D conversion, its conversion formula as shown in Equation 3.
V=(dada-32767)*g/65535 （3）
In formula 3, data is that data collecting card obtains data after A/D conversion, and g is the gain arranging in hyperchannel scan clock triggering collection function, and V is the magnitude of voltage showing.
The array data of each Channel-shifted data value returning due to Dmp609_Timer_Scan_Ad function is the global variable array of LABVIEW definition, the data[0 returning] be translation data, the data[1 of the selected initial passage of start] be the translation data of start+1 passage, the rest may be inferred.Therefore array data need be extracted to one-dimension array function by LABVIEW, be divided into 9 sub-arrays, each subnumber group is used voltage and vibration through calling Formula Node again, electric current, the conversion relation that is related to of temperature converts accordingly, just can obtain actual numerical value that respective channel collects, by writing electronic form file function, just the data that collect can be saved as to text again, the waveform that shows each passage by waveform chart, amplitude level measurement functions is extracted amplitude and level, extract frequency information function and record corresponding peak value, amplitude and frequency.
Motor multiparameter real-time data acquisition system of the present utility model, can not only Real-Time Monitoring vibration, electric current, temperature signal, and these data can be sent to host computer, for For Diagnosing Faults of Electrical and health Evaluation provide foundation.The data of its collection can be for the operational application relevant to motor, also can be for researchs such as For Diagnosing Faults of Electrical and health performance assessments.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (4)
1. motor multiparameter real-time data acquisition system, is characterized in that: on the casing of motor (1), be provided with some vibration transducers that are connected on vibration signal modulate circuit (9); On the electric crossover board (16) of motor (1), be connected with three-phase circuit, wherein on three-phase circuit, be respectively equipped with the current transformer being connected on current signal conditioning circuit (10); At the winding edge of motor (1), be provided with several and be connected to the temperature sensor on temperature signal regulation circuit (8); Wherein vibration signal modulate circuit (9), current signal conditioning circuit (10) and temperature signal regulation circuit (8) are connected in data collecting card (2) above, and described data collecting card (2) is connected on computing machine (3).
2. motor multiparameter real-time data acquisition system as claimed in claim 1, is characterized in that: described vibration transducer comprises first vibration transducer (11) of detection level direction vibration on the side of being located at motor (1) casing and the second vibration transducer (12) of being located at detection of vertical direction vibration on motor (1) casing end face; Between the measuring point of the measuring point of wherein said the first vibration transducer (11) and the second vibration transducer (12), be 90 ° of angles, described the first vibration transducer (11) is connected on data collecting card (2) by vibration signal modulate circuit (9) respectively with the second vibration transducer (12).
3. motor multiparameter real-time data acquisition system as claimed in claim 1 or 2, it is characterized in that: the stator at motor (1) is connected on three-phase circuit by electric crossover board (16), wherein on every circuitry phase, be equipped with current transformer, three current transformers are connected to data collecting card (2) above by current signal conditioning circuit (10) respectively, and the resistance wherein arranging in current signal conditioning circuit (10) is connected with each current transformer respectively.
4. motor multiparameter real-time data acquisition system as claimed in claim 1 or 2, it is characterized in that: temperature sensor is four platinum resistance that are distributed on motor (1) circumferencial direction, make to be 90 ° of angles between two adjacent platinum resistance, described platinum resistance is embedded in the gap of motor (1) winding and casing in advance, four platinum resistance are connected to data collecting card (2) above by temperature signal regulation circuit (8) respectively, and the resistance wherein arranging in temperature signal regulation circuit (8) is connected with each platinum resistance respectively.
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| CN104950257A (en) * | 2015-06-29 | 2015-09-30 | 吉林大学 | Test system and test method for open-end winding permanent magnet synchronous motor |
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| CN104950257A (en) * | 2015-06-29 | 2015-09-30 | 吉林大学 | Test system and test method for open-end winding permanent magnet synchronous motor |
| CN104950257B (en) * | 2015-06-29 | 2017-07-14 | 吉林大学 | Open winding permanent magnet synchronous motor test system and method for testing |
| CN112740055A (en) * | 2018-08-06 | 2021-04-30 | 雷勃美国公司 | Health monitor for electric machine |
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| CN111537910A (en) * | 2020-04-17 | 2020-08-14 | 江苏大学 | Stator winding turn-to-turn short circuit fault diagnosis method and device based on vibration signals |
| TWI763287B (en) * | 2021-01-29 | 2022-05-01 | 凌華科技股份有限公司 | Motor command output module with error detection function and motor command error detection method |
| CN113485201A (en) * | 2021-07-30 | 2021-10-08 | 王丹 | New energy automobile motor health detection control system |
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