CN117007965A - Motor fault detection device - Google Patents
Motor fault detection device Download PDFInfo
- Publication number
- CN117007965A CN117007965A CN202311069632.9A CN202311069632A CN117007965A CN 117007965 A CN117007965 A CN 117007965A CN 202311069632 A CN202311069632 A CN 202311069632A CN 117007965 A CN117007965 A CN 117007965A
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- CN
- China
- Prior art keywords
- fault
- detection
- resistor
- motor
- processing unit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 68
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000000007 visual effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The invention discloses a motor fault detection device, comprising: the magnetic field change detection circuit comprises a chip (IC 1), a resistor (R5), a signal lamp (LED 1) and an electromagnetic microammeter (μA); the electromagnetic microammeter (μA) is electrically connected with the chip (IC 1), the resistor (R5) and the signal lamp (LED 1) are connected in series with the chip (IC 1), the electromagnetic microammeter also comprises a detection circuit, an A/D converter, a central processing unit and a fault display alarm circuit, and relates to the technical field of motor fault detection; by arranging the current distribution and main pole broken line detection circuit, the current distribution and main pole broken line fault problem during the operation of the motor can be timely connected; the fault problem of current distribution and main pole disconnection can be found in time.
Description
Technical Field
The invention relates to the technical field of motor fault detection, in particular to a motor fault detection device.
Background
The current motor fault detection device can monitor the problems of uniform and uneven current distribution and faults of broken main poles, but cannot detect the magnetic field change condition of the motor and cannot fully judge the overall condition of the motor.
Disclosure of Invention
The present invention has been made in view of the problems occurring in the conventional motor failure detection apparatus.
Accordingly, an object of the present invention is to provide a motor fault detection device, which solves the problems that the current distribution is uniform and uneven and whether the main pole broken line has faults or not can be detected by the existing motor fault detection device, but the magnetic field change condition of the motor can not be detected, and the overall condition of the motor can not be fully judged.
In order to solve the technical problems, according to one aspect of the present invention, the following technical solutions are provided:
a motor failure detection apparatus comprising: the magnetic field change detection circuit comprises a chip (IC 1), a resistor (R5), a signal lamp (LED 1) and an electromagnetic microammeter (μA);
the electromagnetic microammeter (mu A) is electrically connected with the chip (IC 1), and the resistor (R5) and the signal lamp (LED 1) are connected with the chip (IC 1) in series.
As a preferable mode of the motor failure detection apparatus according to the present invention, wherein: the system also comprises a detection circuit, an A/D converter, a central processing unit and a fault display alarm circuit; the input end of the detection circuit is connected with a fault signal detection point, the output end of the detection circuit transmits detection data signals to the central processing unit through the A/D converter, and the fault display alarm circuit receives the output signals of the central processing unit and converts the output signals into audible and visual alarm signals to be output.
As a preferable mode of the motor failure detection apparatus according to the present invention, wherein: the detection circuit comprises an operational amplifier (N1), a photoelectric coupler (A1) and resistors (R1), (R2), (R3) and (R4), wherein the input end of the operational amplifier (N1) is connected with a fault signal detection point through the resistor (R4), and the output end of the operational amplifier (N1) outputs a detection signal through the resistors (R2) and (R3) by the photoelectric coupler (A1); the input end of the A/D converter is connected with the output end of each detection circuit, and the output end of the A/D converter outputs detection data signals to the central processing unit); the CPU comprises a single chip microcomputer (U1), a watchdog circuit (N2), an oscillator (G1), capacitors (C1) and (C2) and a memory (N4), wherein the watchdog circuit (N2) provides power and reset signals for the single chip microcomputer (U1), the oscillator (G1) and the capacitors (C1) and (C2) are used for generating clock signals, and the memory (N4) is used for storing fault information.
As a preferable mode of the motor failure detection apparatus according to the present invention, wherein: the photo coupler (A1) is a linear photo coupler.
As a preferable mode of the motor failure detection apparatus according to the present invention, wherein: the fault display alarm circuit comprises a triode (T1), a buzzer (G2), a light emitting diode (D1), resistors (R6), (R7) and (R8); the base electrode of the triode (T1) is connected with the central processing unit (3) through a resistor (R7), the collector electrode of the triode is connected with a power supply through a resistor (R8), and the emitter electrode of the triode is grounded through a buzzer (G2); the cathode of the light emitting diode (D1) is connected with the central processing unit (3), and the anode of the light emitting diode is connected with a power supply through a resistor (R6).
Compared with the prior art:
1. by arranging the magnetic field change detection circuit, the magnetic field change of the motor can be detected to know the state of the motor, so that the fault condition of the motor can be known in time;
2. by arranging the current distribution and main pole broken line detection circuit, the current distribution and main pole broken line fault problem during the operation of the motor can be timely connected; the fault problem of current distribution and main pole disconnection can be found in time.
Drawings
FIG. 1 is a diagram of a magnetic field variation detection circuit provided by the present invention;
FIG. 2 is a schematic diagram of current distribution and main pole disconnection detection provided by the invention;
fig. 3 is a circuit diagram of current distribution and main pole disconnection detection provided by the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The present invention provides a motor fault detection device, please refer to fig. 1-3, comprising: the magnetic field change detection circuit comprises a chip (IC 1), a resistor (R5), a signal lamp (LED 1) and an electromagnetic microammeter (μA);
the electromagnetic microammeter (μA) is electrically connected with the chip (IC 1), and the resistor (R5) and the signal lamp (LED 1) are connected with the chip (IC 1) in series.
The system also comprises a detection circuit, an A/D converter, a central processing unit and a fault display alarm circuit; the input end of the detection circuit is connected with the fault signal detection point, the output end of the detection circuit transmits detection data signals to the central processing unit through the A/D converter, and the fault display alarm circuit receives the output signals of the central processing unit and converts the output signals into audible and visual alarm signals to be output.
The detection circuit comprises an operational amplifier (N1), a photoelectric coupler (A1) and resistors (R1), (R2), (R3) and (R4), wherein the input end of the operational amplifier (N1) is connected with a fault signal detection point through the resistor (R4), and the output end of the operational amplifier (N1) outputs a detection signal through the resistors (R2) and (R3) by the photoelectric coupler (A1); an A/D converter, the input end of which is connected with the output end of each detection circuit, and the output end of which outputs detection data signals to a central processing unit); the CPU comprises a singlechip (U1), a watchdog circuit (N2), an oscillator (G1), capacitors (C1) and (C2), a memory (N4), wherein the watchdog circuit (N2) provides power and reset signals for the singlechip (U1), the oscillator (G1) and the capacitors (C1) and (C2) are used for generating clock signals, the memory (N4) is used for storing fault information, and the photoelectric coupler (A1) is a linear photoelectric coupler.
The fault display alarm circuit comprises a triode (T1), a buzzer (G2), a light emitting diode (D1), resistors (R6), (R7) and (R8); the base electrode of the triode (T1) is connected with the central processing unit through a resistor (R7), the collector electrode of the triode is connected with a power supply through a resistor (R8), and the emitter electrode of the triode is grounded through a buzzer (G2); the cathode of the LED (D1) is connected with the CPU, and the anode is connected with the power supply through the resistor (R6).
When the device is specifically used, the joint a and the joint b at the input end of the detection circuit 1 are connected with fault signal detection points, output signals of the detection circuit transmit detection data signals to the central processing unit through the A/D converter, after the signals are interpreted and identified by the central processing unit, trigger signals are output to the fault display alarm circuit, and the trigger signals are converted into audible and visual alarm signals by the fault display alarm circuit to be output;
in each detection circuit, the input end of an operational amplifier N1 is connected with signals of 0-75 mV at two ends of a shunt (not shown) through a resistor R4, the signals are amplified into signals of 0-5V linearly by the operational amplifier N1, the signals are input into a photoelectric coupler A1 through resistors R2 and R3, the output end of the photoelectric coupler A1 is connected with an A/D converter N3, the signals are connected with a power supply through the resistor R1, and the A/D converter N3 outputs digital signals to a singlechip U1; the watchdog circuit N2 is connected between the singlechip U1 and the power supply, provides power supply and reset signals for the singlechip U1, and the oscillator G1 and the capacitors C1 and C2 provide clock signals for the singlechip U1, and the memory N4 is used for storing fault information; the base electrode of the triode T1 is connected with the singlechip U1 through a resistor R7, the collector electrode is connected with a power supply through a resistor R8, the emitter electrode is grounded through a buzzer G2, the cathode electrode of the triode T1 is connected with the singlechip U1, and the anode electrode is connected with the power supply through a resistor R6;
when the singlechip U1 recognizes that the current distribution of a traction motor is uneven or the main pole is broken, a trigger signal is output, and an alarm circuit acts to send out audible and visual alarm; the current of a traction motor is unevenly distributed, and the corresponding light-emitting diode flashes; the main pole circuit of a traction motor is broken, and the corresponding light-emitting diode is always on;
meanwhile, the magnetic field change detection circuit detects the magnetic field change of the motor so as to know the state of the motor and timely know the fault condition of the motor.
Although the invention has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. A motor failure detection apparatus, comprising: the magnetic field change detection circuit comprises a chip (IC 1), a resistor (R5), a signal lamp (LED 1) and an electromagnetic microammeter (μA);
the electromagnetic microammeter (mu A) is electrically connected with the chip (IC 1), and the resistor (R5) and the signal lamp (LED 1) are connected with the chip (IC 1) in series.
2. The motor fault detection device of claim 1, further comprising a detection circuit, an a/D converter, a central processing unit, and a fault display alarm circuit; the input end of the detection circuit is connected with a fault signal detection point, the output end of the detection circuit transmits detection data signals to the central processing unit through the A/D converter, and the fault display alarm circuit receives the output signals of the central processing unit and converts the output signals into audible and visual alarm signals to be output.
3. The motor fault detection device according to claim 2, wherein the detection circuit comprises an operational amplifier (N1), a photo coupler (A1) and resistors (R1), (R2), (R3), (R4), the input end of the operational amplifier (N1) is connected to the fault signal detection point through the resistor (R4), and the output end of the operational amplifier outputs a detection signal through the photo coupler (A1) through the resistors (R2), (R3); the input end of the A/D converter is connected with the output end of each detection circuit, and the output end of the A/D converter outputs detection data signals to the central processing unit); the CPU comprises a single chip microcomputer (U1), a watchdog circuit (N2), an oscillator (G1), capacitors (C1) and (C2) and a memory (N4), wherein the watchdog circuit (N2) provides power and reset signals for the single chip microcomputer (U1), the oscillator (G1) and the capacitors (C1) and (C2) are used for generating clock signals, and the memory (N4) is used for storing fault information.
4. A motor failure detection apparatus according to claim 3, characterized in that the photo coupler (A1) is a linear photo coupler.
5. A motor fault detection device according to claim 3, characterized in that the fault display alarm circuit comprises a triode (T1), a buzzer (G2), a light emitting diode (D1) and resistors (R6), (R7), (R8); the base electrode of the triode (T1) is connected with the central processing unit through a resistor (R7), the collector electrode of the triode is connected with a power supply through a resistor (R8), and the emitter electrode of the triode is grounded through a buzzer (G2); the cathode of the light emitting diode (D1) is connected with the central processing unit, and the anode of the light emitting diode is connected with a power supply through a resistor (R6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311069632.9A CN117007965A (en) | 2023-08-23 | 2023-08-23 | Motor fault detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311069632.9A CN117007965A (en) | 2023-08-23 | 2023-08-23 | Motor fault detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117007965A true CN117007965A (en) | 2023-11-07 |
Family
ID=88572699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311069632.9A Pending CN117007965A (en) | 2023-08-23 | 2023-08-23 | Motor fault detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117007965A (en) |
-
2023
- 2023-08-23 CN CN202311069632.9A patent/CN117007965A/en active Pending
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