CN201608680U - Motor rotation detecting device - Google Patents
Motor rotation detecting device Download PDFInfo
- Publication number
- CN201608680U CN201608680U CN2010200330140U CN201020033014U CN201608680U CN 201608680 U CN201608680 U CN 201608680U CN 2010200330140 U CN2010200330140 U CN 2010200330140U CN 201020033014 U CN201020033014 U CN 201020033014U CN 201608680 U CN201608680 U CN 201608680U
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- motor
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- motor rotation
- rotation detecting
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Abstract
The utility model discloses a motor rotation detecting device comprising a PCB, a permanent magnet device which is arranged on a rotary shaft of the motor, as well as a magnetic encoding circuit and a motor rotating direction identification circuit which are arranged on the PCB, wherein the magnetic encoding circuit is mainly formed by a linear Hall sensor and a single chip microcomputer and used for judging the position of a rotator and detecting the rotation speed of the motor; the motor rotating direction identification circuit is mainly formed by two switch Hall sensors and a D trigger, wherein impulse signals output from one switch Hall sensor are transmitted to the impulse input CP end of the D trigger, while impulse signals output from the other switch Hall sensor are transmitted to the signal input D end of the D trigger; and the high and low electrical level output from the output end of the D trigger is used for judging the rotation direction of the motor. For the motor rotation detecting device, the detection precision is not restrained by the number of wires and not influenced by dust, the detection on the rotation direction of the motor is simple, and the cost performance is high.
Description
Technical field
The utility model relates to a kind of motor detection apparatus, relates in particular to a kind of motor rotation detecting.
Background technology
At present, detect the device of judgement on the domestic market for motor pole position, rotating speed etc., generally adopt incremental optical-electricity encoder.Though it is wider that incremental optical-electricity encoder is used, its control precision is subjected to the constraint of line number, for the photoelectric encoder of degree of precision, if fall to having dust just may cause the appearance of mistake pulse on the code-disc, thereby influences the accuracy in detection of whole detection device in addition.Judgement for the direction of rotation of motor lacks a kind of simple and direct method in addition.
The utility model content
The technical problems to be solved in the utility model provides a kind of motor rotation detecting, and this Device Testing precision is not retrained by the line number, also is not subjected to the influence of dust, and this device judges that the direction of rotation of motor is simple.
In order to solve the problems of the technologies described above, the utility model motor rotation detecting comprises pcb board, also comprises being installed on the permanent magnet device on the machine shaft and being located at magnetic coding circuit and motor direction of rotation identification circuit on the described pcb board;
Described magnetic coding circuit mainly is made up of linear hall sensor and single-chip microcomputer, be used to judge rotor-position and detect motor speed, this linear hall sensor is connected with single-chip microcomputer, and the alternating magnetic field sine wave output signal that the described permanent magnet device of foundation produces is to this single-chip microcomputer;
Described motor direction of rotation identification circuit mainly is made up of two switch Hall transducers and d type flip flop, wherein, the pulse signal of a switch Hall transducer output is sent to the pulse input CP end of d type flip flop, the pulse signal of another switch Hall transducer output is sent to the signal input D end of d type flip flop, and the high-low level of this d type flip flop output output is used to judge the direction of motor rotation.
Preferably, described two switch Hall transducers differ in the half period with the output pulse that guarantees these two switch Hall transducers near placing.
Preferably, described permanent magnet device is a rare earth magnetic steel.
The utility model motor rotation detecting, accuracy of detection is not retrained by the line number, be not subjected to the influence of dust yet, and because this checkout gear uses the switch Hall element to differentiate the position of rotation direction and rotor, determination methods is simply direct, and the price of checkout gear of the present invention is far below photoelectric encoder, and the cost performance height has the stronger market competitiveness.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the schematic block circuit diagram of the utility model motor rotation detecting;
Fig. 2 is the waveform schematic diagram of the utility model motor rotation detecting neutral line Hall element output;
Fig. 3 is the waveform schematic diagram of two switch Hall transducer outputs in the utility model motor rotation detecting.
Embodiment
As shown in Figure 1, the utility model motor rotation detecting comprises pcb board (printed substrate), also comprises the permanent magnet device 1 that is installed on the machine shaft and is located at magnetic coding circuit 2 and motor direction of rotation identification circuit 3 on the pcb board.
Motor direction of rotation identification circuit 3 mainly is made up of two switch Hall transducers 6 and d type flip flop 7, wherein, the pulse signal of switch Hall transducer 6.1 outputs is sent to the pulse input CP end of d type flip flop 7, the pulse signal of another switch Hall transducer 6.2 outputs is sent to the signal input D end of d type flip flop 7, and the high-low level of this d type flip flop 7 outputs output is used to judge the direction of motor rotation.
The utility model motor rotation detecting adopts Hall element in magnetic coding circuit 2 and motor direction of rotation identification circuit 3, the output of Hall element is that the variation according to magnetic field changes, its output can be sine wave for linear hall sensor, the sine wave of one-period can be carried out unlimited equal portions (being that the line number is tending towards infinite) in theory, therefore the utility model efficiently solves existing photoelectric encoder influences certainty of measurement because of the restriction of line number problem, dust is for magnetic field also not influence, and it is wider that checkout gear of the present utility model adapts to occasion.
In an embodiment of the present utility model, the motor rotation detecting comprises the pcb board that is installed on electric motor end cap and is welded on motor direction of rotation identification circuit 3, magnetic coding circuit 2 on the pcb board, and be installed on bar shaped rare earth magnetic steel (belonging to a kind of of permanent magnet device 1) on the machine shaft, the magnetic coding circuit 2 of judgement rotor-position and rotating speed thereof mainly is made up of linear hall sensor 4 and single-chip microcomputer 5, linear hall sensor 4 is installed in the top of bar shaped rare earth magnetic steel, and its output signal is a sine wave (as shown in Figure 2).Rare earth magnetic steel produces alternating magnetic field, and when the N utmost point of the bar shaped rare earth magnetic steel on placing machine shaft just in time was in the below of linear hall sensor 4, linear hall sensor 4 was output as sinusoidal wave valley; When the S of the bar shaped rare earth magnetic steel utmost point was in the below of linear hall sensor 4, linear hall sensor 4 was output as sinusoidal wave peak value; When the position of bar shaped rare earth magnetic steel and linear hall sensor 4 were vertical, linear hall sensor 4 outputs then were in sinusoidal wave null value.The function of magnetic coding circuit 2 is that the 0-5V sine wave signal of linear hall sensor 4 outputs is delivered to single-chip microcomputer 5, single-chip microcomputer 5 is ceaselessly sampled to continuous sinusoidal signal according to the requirement of precision, with the contrast of tabling look-up of the value of sampling and the prior positional value of input single-chip microcomputer, then produce a magnetic field impulse signal when equaling wherein certain value.For example: revolve the sine wave of the one-period that three-sixth turn produces for rotor, corresponding 1 degree of pulse signal, motor revolves to turn around and then produces 360 pulses so.Single-chip microcomputer can also calculate rotating speed of motor according to the time between two pulses simultaneously.
Motor direction of rotation identification circuit 3 is mainly formed (see figure 1) by 6.1,6.2 and d type flip flops 7 of two switch Hall transducers, switch Hall transducer 6 installation sites are the belows that are placed on the bar shaped rare earth magnetic steel, two switch Hall transducers 6.1,6.2 will be as much as possible near placing, differ in half period with the output pulse that guarantees two switch Hall transducers, the signal waveform that abuts against two switch Hall transducers 6.1,6.2 output together as shown in Figure 3.When turning clockwise for rotor, the pulse signal of switch Hall transducer 6.2 outputs is ahead of the pulse signal of switch Hall transducer 6.1 outputs, when rotor is rotated counterclockwise, the pulse signal of switch Hall transducer 6.2 outputs lags behind the pulse signal of switch Hall transducer 6.1 outputs, the pulse signal of switch Hall transducer 6.1,6.2 outputs is delivered to the pulse input CP end and the signal input D end of d type flip flop 7 respectively.The output signal of switch Hall transducer 6.2 is held input signal as CP as shown in Figure 3, the output of switch Hall transducer 6.1 is as the input signal of d type flip flop D end, the d type flip flop of selecting trailing edge to trigger, because two switch Hall transducers abut against together, differ in half period between pulse signal CP and the input signal D.The state Q=D of d type flip flop 7 output signals (when the trailing edge of CP pulse arrives) therefore if the output OUT2 of d type flip flop 7 is a low level, illustrates that then motor is rotated counterclockwise, if the output OUT2 of d type flip flop 7 is a high level, illustrates that then motor turns clockwise.So only need just can judge the direction of rotation of motor according to the height situation of d type flip flop 7 output OUT2 output levels.Because the utility model checkout gear adopts the switch Hall transducer to differentiate rotation direction in conjunction with a d type flip flop, determination methods is simply direct, and cheap, and the cost performance height has the very strong market competitiveness.
Below only expressed execution mode of the present utility model, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model patent scope.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (6)
1. a motor rotation detecting comprises pcb board, it is characterized in that, also comprises being installed on the permanent magnet device on the machine shaft and being located at magnetic coding circuit and motor direction of rotation identification circuit on the described pcb board;
Described magnetic coding circuit mainly is made up of linear hall sensor and single-chip microcomputer, be used to judge rotor-position and detect motor speed, this linear hall sensor is connected with single-chip microcomputer, and the alternating magnetic field sine wave output signal that the described permanent magnet device of foundation produces is to this single-chip microcomputer;
Described motor direction of rotation identification circuit mainly is made up of two switch Hall transducers and d type flip flop, wherein, the pulse signal of a switch Hall transducer output is sent to the pulse input CP end of d type flip flop, the pulse signal of another switch Hall transducer output is sent to the signal input D end of d type flip flop, and the high-low level of this d type flip flop output output is used to judge the direction of motor rotation.
2. motor rotation detecting according to claim 1 is characterized in that, described two switch Hall transducers differ in the half period with the output pulse that guarantees these two switch Hall transducers near placing.
3. motor rotation detecting according to claim 1 is characterized in that, described permanent magnet device is a rare earth magnetic steel.
4. motor rotation detecting according to claim 1 is characterized in that described pcb board is installed on the electric motor end cap.
5. motor rotation detecting according to claim 1 is characterized in that described linear hall sensor is positioned at the top of permanent magnet device.
6. motor rotation detecting according to claim 1 is characterized in that described switch Hall transducer is positioned at the below of permanent magnet device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200330140U CN201608680U (en) | 2010-01-13 | 2010-01-13 | Motor rotation detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200330140U CN201608680U (en) | 2010-01-13 | 2010-01-13 | Motor rotation detecting device |
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| CN201608680U true CN201608680U (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010200330140U Expired - Fee Related CN201608680U (en) | 2010-01-13 | 2010-01-13 | Motor rotation detecting device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331509A (en) * | 2011-06-15 | 2012-01-25 | 国网电力科学研究院 | Motor speed measuring method capable of judging direction of rotating speed |
| CN103204425A (en) * | 2013-03-19 | 2013-07-17 | 昆山通祐电梯有限公司 | Reversion detecting device and method for escalator |
| CN103222167A (en) * | 2011-09-27 | 2013-07-24 | 浙江博望科技发展有限公司 | Three-phase polymorphic servo motor |
| CN104659973A (en) * | 2015-01-30 | 2015-05-27 | 沈阳航空航天大学 | Apparatus for detecting rotating speed and position of aircraft permanent magnet synchronous motor |
| CN104682814A (en) * | 2013-11-29 | 2015-06-03 | 台达电子工业股份有限公司 | Fan air-return-preventing system and fan air-return-preventing method |
| CN105203794A (en) * | 2015-09-21 | 2015-12-30 | 华自科技股份有限公司 | Electric generator rotation speed measuring system and method |
| CN108330580A (en) * | 2018-04-20 | 2018-07-27 | 广东溢达纺织有限公司 | Lift spindle rotation monitoring system, method and the computer equipment of spinning equipment |
| WO2019210459A1 (en) * | 2018-05-02 | 2019-11-07 | Bently Nevada, Llc | Reverse detection for rotating machinery |
| CN111449482A (en) * | 2020-03-20 | 2020-07-28 | 珠海格力电器股份有限公司 | Electric curtain, electric curtain control method and device and electronic equipment |
| CN112986398A (en) * | 2021-03-15 | 2021-06-18 | 南昌航空大学 | Electromagnetic ultrasonic Lamb wave transducer and online detection system and method |
| CN112986399A (en) * | 2021-03-15 | 2021-06-18 | 南昌航空大学 | Electromagnetic ultrasonic SH (shear) guided wave transducer and online detection system and method |
| GB2593287A (en) * | 2020-02-20 | 2021-09-22 | Caterpillar Inc | Component indentification |
| US11306707B2 (en) | 2018-09-13 | 2022-04-19 | Nuovo Pignone Tecnologie—S.R.L. | Method for reducing the pulsation level in a multi-compressor plant employing reciprocating compressors |
-
2010
- 2010-01-13 CN CN2010200330140U patent/CN201608680U/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331509A (en) * | 2011-06-15 | 2012-01-25 | 国网电力科学研究院 | Motor speed measuring method capable of judging direction of rotating speed |
| CN103222167A (en) * | 2011-09-27 | 2013-07-24 | 浙江博望科技发展有限公司 | Three-phase polymorphic servo motor |
| CN103222167B (en) * | 2011-09-27 | 2016-01-13 | 浙江博望科技发展有限公司 | A kind of three-phase polymorphic servo motor |
| CN103204425A (en) * | 2013-03-19 | 2013-07-17 | 昆山通祐电梯有限公司 | Reversion detecting device and method for escalator |
| CN104682814A (en) * | 2013-11-29 | 2015-06-03 | 台达电子工业股份有限公司 | Fan air-return-preventing system and fan air-return-preventing method |
| US9777738B2 (en) | 2013-11-29 | 2017-10-03 | Delta Electronics, Inc. | Anti-air-return system and method of fan |
| CN110011589A (en) * | 2013-11-29 | 2019-07-12 | 台达电子工业股份有限公司 | Fan anti-air-return system and method |
| CN104659973A (en) * | 2015-01-30 | 2015-05-27 | 沈阳航空航天大学 | Apparatus for detecting rotating speed and position of aircraft permanent magnet synchronous motor |
| CN105203794A (en) * | 2015-09-21 | 2015-12-30 | 华自科技股份有限公司 | Electric generator rotation speed measuring system and method |
| CN108330580B (en) * | 2018-04-20 | 2023-08-29 | 广东溢达纺织有限公司 | Hanging spindle rotation monitoring system, method and computer equipment of spinning equipment |
| CN108330580A (en) * | 2018-04-20 | 2018-07-27 | 广东溢达纺织有限公司 | Lift spindle rotation monitoring system, method and the computer equipment of spinning equipment |
| WO2019210459A1 (en) * | 2018-05-02 | 2019-11-07 | Bently Nevada, Llc | Reverse detection for rotating machinery |
| CN112041687A (en) * | 2018-05-02 | 2020-12-04 | 本特利内华达有限责任公司 | Reverse direction detection for rotary machines |
| US11306707B2 (en) | 2018-09-13 | 2022-04-19 | Nuovo Pignone Tecnologie—S.R.L. | Method for reducing the pulsation level in a multi-compressor plant employing reciprocating compressors |
| GB2593287A (en) * | 2020-02-20 | 2021-09-22 | Caterpillar Inc | Component indentification |
| US11131564B2 (en) | 2020-02-20 | 2021-09-28 | Caterpillar Inc. | Component identification |
| GB2593287B (en) * | 2020-02-20 | 2023-12-06 | Caterpillar Inc | Component indentification |
| CN111449482A (en) * | 2020-03-20 | 2020-07-28 | 珠海格力电器股份有限公司 | Electric curtain, electric curtain control method and device and electronic equipment |
| CN112986398A (en) * | 2021-03-15 | 2021-06-18 | 南昌航空大学 | Electromagnetic ultrasonic Lamb wave transducer and online detection system and method |
| CN112986399A (en) * | 2021-03-15 | 2021-06-18 | 南昌航空大学 | Electromagnetic ultrasonic SH (shear) guided wave transducer and online detection system and method |
| CN112986399B (en) * | 2021-03-15 | 2022-06-28 | 南昌航空大学 | Electromagnetic ultrasonic SH guided wave transducer and online detection system and method |
| CN112986398B (en) * | 2021-03-15 | 2022-06-28 | 南昌航空大学 | Electromagnetic ultrasonic Lamb wave transducer and online detection system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101013 Termination date: 20110113 |