CN203522143U - Motor stalling detection circuit - Google Patents
Motor stalling detection circuit Download PDFInfo
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- CN203522143U CN203522143U CN201320526551.2U CN201320526551U CN203522143U CN 203522143 U CN203522143 U CN 203522143U CN 201320526551 U CN201320526551 U CN 201320526551U CN 203522143 U CN203522143 U CN 203522143U
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- chip microcomputer
- effect transistor
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Abstract
The utility model relates to a motor stalling detection circuit. The motor stalling detection circuit comprises a single chip and a motor, wherein the positive terminal of the motor is connected with the positive pole of a direct-current power supply; a stalling protection circuit is arranged between the single chip and the motor; the single chip is used for controlling the rotation of the motor according to the port thereof connected with the stalling protection circuit, judging the stalling condition of the motor by the detection signal of a second I/O (input/output) interface, and outputting a pulse modulated wave through a first I/O interface to control on/off of a field-effect transistor, and then to control the rotation of the motor. The motor stalling detection circuit disclosed by the utility model is high in detection accuracy, low in cost and simple in structure.
Description
Technical field
The utility model relates to motor, more particularly, relates to a kind of motor rotation blockage state detection circuit.
Background technology
In telecontrolled aircraft, telecar etc. toy, with the motor of the output that is used as power, be one of them very important part.After starting power supply, motor is probably owing to being clashed into or because the screw of telecontrolled aircraft etc. is forced to normally to rotate to be broken down, i.e. motor generation stall.Once generation stall, must not carry out any conservation treatment, otherwise easy motor damage and then cause toy damage.And a lot of internal mains of playing will utilize the AD mouth of single-chip microcomputer to sample on market, the change in voltage by test point judges whether to occur stall, conventionally sets a stall AD threshold value, and the AD value of sampling during over this threshold value, judges motor generation stall.Yet while using Chip Microcomputer A/D mouth to sample, because the driving frequency of different motors is different, therefore by AD mouth, detect the stall situation of motor, its detection efficiency is not high, and different interface microcontrollers are provided with difference, in the situation that not possessing AD mouth, increase AD mouth and can increase cost.
Utility model content
The technical problems to be solved in the utility model is, the electric circuit inspection efficiency whether stall occurs for the detection motor of prior art is not high, and the defect of consuming cost, provides a kind of and can accurately detect motor rotation blockage situation and the low motor rotation-blocking detection circuit of cost.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of motor rotation-blocking detection circuit, comprise single-chip microcomputer, motor and be arranged on described single-chip microcomputer and described motor between Lock protective circuit, described single-chip microcomputer is controlled the rotation of described motor by described Lock protective circuit;
Described motor comprises anode and negative terminal, and described anode is used for connecting external power source;
Described single-chip microcomputer at least comprises an I/O interface and the 2nd I/O interface;
Described Lock protective circuit comprises current-limiting resistance, field effect transistor and detects resistance;
Wherein, described current-limiting resistance one end is connected to an I/O interface of described single-chip microcomputer, and the other end of described current-limiting resistance is connected with the grid of described field effect transistor;
The source ground of described field effect transistor, the drain electrode of described field effect transistor is connected with the negative terminal of described motor;
Described detection resistance one end is connected with the negative terminal of described motor (M), and the other end is by pull down resistor ground connection, and the 2nd I/O interface of described single-chip microcomputer is connected between described detection resistance and described pull down resistor;
Described single-chip microcomputer detects the stall situation of the potential change judgement motor (M) between described detection resistance and described pull down resistor, and by output, pass through described current-limiting resistance and input the break-make that the pulse modulated wave of described field effect transistor is controlled described field effect transistor, and then control the rotation of described motor.
In motor rotation-blocking detection circuit described in the utility model, the resistance of described detection resistance is greater than pull down resistor.
In motor rotation-blocking detection circuit described in the utility model, also comprise and be connected in parallel on the source electrode of described field effect transistor and the first diode between drain electrode, the anode of described the first diode is connected with the source electrode of described field effect transistor, and the negative electrode of described the first diode is connected with the drain electrode of described field effect transistor.
In motor rotation-blocking detection circuit described in the utility model, also comprise the first electric capacity, the two poles of the earth of described the first electric capacity are connected respectively to anode and the negative terminal of described motor.
In motor rotation-blocking detection circuit described in the utility model, also comprise the alarm unit being connected with described single-chip microcomputer, described single-chip microcomputer is controlled described alarm unit and is sent alarm when motor rotation blockage being detected.
In motor rotation-blocking detection circuit described in the utility model, described alarm unit comprises at least one in loudspeaker and LED light.
In motor rotation-blocking detection circuit described in the utility model, described loudspeaker are connected to described single-chip microcomputer by triode and the second resistance.
In motor rotation-blocking detection circuit described in the utility model, described LED light is connected to described single-chip microcomputer by the 3rd resistance.
Implement motor rotation-blocking detection circuit of the present utility model, there is following beneficial effect: in testing process, if test point detects low level, represent that motor rotation is normal, when motor generation stall, when stall, inductance characteristic due to motor, motor produces inverse electromotive force, it is large that reverse voltage becomes, stall detects pin and becomes input state from exporting high level, constantly detect the state of pin, low level can not be detected always, be judged as stall, can detect accurately thus and in motor, whether have stall, and circuit structure is simple, cost is low, later maintenance is simple.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the circuit theory diagrams of the first embodiment of motor rotation-blocking detection circuit of the present utility model;
Fig. 2 is the circuit theory diagrams of the second embodiment of motor rotation-blocking detection circuit of the present utility model
Embodiment
In order to make the purpose of this utility model 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 Figure 1, in motor rotation-blocking detection circuit schematic diagram of the present utility model, comprise motor M and single-chip microcomputer U1, between single-chip microcomputer U1 and motor M, be connected with Lock protective circuit.Two IO mouths of single-chip microcomputer U1 are connected to motor M through described Lock protective circuit respectively, control the running of motor M by described Lock protective circuit.
Described Lock protective circuit comprises current-limiting resistance R1, field effect transistor Q1 and detects resistance R 2.The grid of field effect transistor Q1 is connected to a described I/O interface through current-limiting resistance R1, the source ground of field effect transistor Q1, and the drain electrode of Q1 simultaneously and the negative terminal of motor M are connected.Current-limiting resistance R1 one end is connected with an I/O interface of described single-chip microcomputer U1, and the other end of current-limiting resistance R1 is connected with the grid of field effect transistor Q1; The grid of field effect transistor Q1 is through the first resistance R 4 ground connection simultaneously.Single-chip microcomputer U1 controls the running of break-make and then the control motor M of field effect transistor Q1 through a described I/O interface output pwm pulse modulating wave.
As shown in Figure 1, between the source electrode of field effect transistor Q1 and drain electrode, be connected with the first diode D1, described the first anode of diode D1 and the source electrode of described field effect transistor Q1 are connected, and described the first negative electrode of diode D1 and the drain electrode of described field effect transistor Q1 are connected.
The negative terminal of motor M is connected to and detects resistance R 2, then through pull down resistor R3 ground connection.The 2nd I/O interface of single-chip microcomputer U1 is connected to stall test point P, and stall test point P is positioned at and detects one end that resistance R 2 is connected with described pull down resistor R3.Particularly, the resistance of detection resistance R 2 should be much larger than pull down resistor R3.Pull down resistor R3 in the present embodiment is 680K, and detect resistance R 2, is 1M.Stall test point P is connected with the 2nd I/O interface of described single-chip microcomputer, and the electromotive force situation of change that P is ordered is passed to single-chip microcomputer U1 through described the 2nd I/O interface, and single-chip microcomputer U1 controls the running of motor M thus through an I/O interface port output pwm signal.
The parallel connection of motor M two ends the first capacitor C 1 as short-circuit protection, capacitor C 1 value in the present embodiment is 10
4pF.
In embodiment shown in Fig. 1, single-chip microcomputer U1 the 4th pin is power supply input pin, for accessing power supply VCC+5V; The 2nd pin is the 2nd above-mentioned I/O interface access stall test point P; The 3rd pin is an above-mentioned I/O interface, for exporting pwm pulse control wave, and pwm pulse control wave is outputed to field effect transistor Q1 through current-limiting resistance R1.In embodiment shown in Fig. 1, the resistance of resistance R 1 is 330 Ω, and resistance R 4 values are 100K.
When motor M runs well, described the 2nd I/O interface detects while no longer discharging to P point, for example be 5s detection time, during this period of time single-chip microcomputer U1 detects all the time as low level on stall test point P, now show that stall does not occur in motor M normal operation, single-chip microcomputer U1 is accordingly to a described I/O interface output PWM control wave, and in order to keep field effect transistor Q1 conducting, motor M keeps normal operation.
During motor M generation stall, inductance characteristic due to motor M, produce inverse electromotive force, detect pin P point voltage and become large, described the 2nd I/O interface of single-chip microcomputer U1 constantly detects P dotted state, low level can not be detected all the time, now show motor M generation stall, single-chip microcomputer U1 to the described I/O interface output pwm pulse control wave reverse with the control wave of above-mentioned maintenance field effect transistor Q1 conducting, in order to block field effect transistor Q1, thereby shuts down motor M accordingly.
In addition, in the embodiment shown in Fig. 1, single-chip microcomputer U1 also comprises the 3rd I/O interface, and the 3rd I/O interface is also connected with alarm unit, and described alarm unit sends alarm when motor M generation stall.Alarm unit in the present embodiment is loudspeaker LS1, and loudspeaker LS1 is connected to the 5th pin of single-chip microcomputer U1 by triode Q2 and the second resistance R 5.When the 2nd pin of single-chip microcomputer U1 detects motor M generation stall, single-chip microcomputer U1 controls on the one hand motor M and shuts down, and controls on the other hand loudspeaker LS1 and sounds, and user is pointed out.
Be illustrated in figure 2 the second embodiment of the present utility model, in the present embodiment, compare with the embodiment shown in Fig. 1, the alarm unit in the present embodiment is LED light.When single-chip microcomputer U1 detects motor M generation stall, can control LED light shinny or flicker, with reminding user.As shown in Figure 2, LED lamp D1 is connected to the 7th pin of single-chip microcomputer U1 by the 3rd resistance R 6.
Should be appreciated that this alarm unit can also comprise loudspeaker and LED light simultaneously, when single-chip microcomputer U1 detects motor M generation stall, can control the shinny or flicker with control LED light of loudspeaker generation sound, simultaneously by sound and light reminding user.The connected mode of loudspeaker and LED lamp and single-chip microcomputer U1 can be with reference to Fig. 1 and Fig. 2, and therefore not to repeat here.
In concrete application, this motor rotation-blocking detection circuit can be applied in to telecontrolled aircraft, remote operated vehicle etc. and have on the electrical equipment of motor, can detect is easily that in use procedure, whether motor stall occurs, and carries out warning reminding.When there is motor rotation blockage, can control motor and shut down, so as not to burning, user's personal safety and property are caused damage.By adopting this motor rotation-blocking detection circuit, can detect easily whether motor rotation blockage occurs, and then carry out respective handling, can improve greatly the useful life of motor.
Adopt motor rotation-blocking detection circuit of the present utility model, by utilizing the capacitance characteristic of the IO mouth of single-chip microcomputer to judge the height state of IO mouth test point, and then judge whether to occur to click stall.Adopt this detection mode applicable to the single-chip microcomputer with IO mouth of any model, and testing circuit is simple in structure, applicability is wide, and portable good, later maintenance is simple; Adopt this motor rotation-blocking detection circuit cost low, can be product cost-saving.
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 range of the present utility model.
Claims (8)
1. a motor rotation-blocking detection circuit, it is characterized in that, comprise single-chip microcomputer (U1), motor (M) and be arranged on described single-chip microcomputer (U1) and described motor (M) between Lock protective circuit, described single-chip microcomputer (U1) is controlled the rotation of described motor (M) by described Lock protective circuit;
Described motor (M) comprises anode and negative terminal, and described anode is used for connecting external power source;
Described single-chip microcomputer (U1) at least comprises an I/O interface and the 2nd I/O interface;
Described Lock protective circuit comprises current-limiting resistance (R1), field effect transistor (Q1) and detects resistance (R2);
Wherein, described current-limiting resistance (R1) one end is connected to an I/O interface of described single-chip microcomputer (U1), and the other end of described current-limiting resistance (R1) is connected with the grid of described field effect transistor (Q1);
The source ground of described field effect transistor (Q1), the drain electrode of described field effect transistor (Q1) is connected with the negative terminal of described motor (M);
Described detection resistance (R2) one end is connected with the negative terminal of described motor (M), the other end is by pull down resistor (R3) ground connection, and the 2nd I/O interface of described single-chip microcomputer (U1) is connected between described detection resistance (R2) and described pull down resistor (R3);
Described single-chip microcomputer (U1) detects the stall situation of the potential change judgement motor (M) between described detection resistance (R2) and described pull down resistor (R3), and by output, pass through described current-limiting resistance (R1) and input the pulse modulated wave of described field effect transistor (Q1) and control the break-make of described field effect transistor (Q1), and then control the rotation of described motor (M).
2. motor rotation-blocking detection circuit according to claim 1, is characterized in that, the resistance of described detection resistance (R2) is greater than pull down resistor (R3).
3. motor rotation-blocking detection circuit according to claim 2, it is characterized in that, also comprise and be connected in parallel on the source electrode of described field effect transistor (Q1) and the first diode (D1) between drain electrode, the anode of described the first diode (D1) is connected with the source electrode of described field effect transistor (Q1), and the negative electrode of described the first diode (D1) is connected with the drain electrode of described field effect transistor (Q1).
4. motor rotation-blocking detection circuit according to claim 3, is characterized in that, also comprises the first electric capacity (C1), and the two poles of the earth of described the first electric capacity (C1) are connected respectively to anode and the negative terminal of described motor (M).
5. motor rotation-blocking detection circuit according to claim 4, it is characterized in that, also comprise the alarm unit being connected with described single-chip microcomputer (U1), described single-chip microcomputer (U1) is controlled described alarm unit and is sent alarm when motor (M) stall being detected.
6. motor rotation-blocking detection circuit according to claim 5, is characterized in that, described alarm unit comprises at least one in loudspeaker (LS1) and LED light (D2).
7. motor rotation-blocking detection circuit according to claim 6, is characterized in that, described loudspeaker (LS1) are connected to described single-chip microcomputer (U1) by triode (Q2) and the second resistance (R5).
8. motor rotation-blocking detection circuit according to claim 6, is characterized in that, described LED light (D1) is connected to described single-chip microcomputer (U1) by the 3rd resistance (R6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320526551.2U CN203522143U (en) | 2013-08-27 | 2013-08-27 | Motor stalling detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320526551.2U CN203522143U (en) | 2013-08-27 | 2013-08-27 | Motor stalling detection circuit |
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| Publication Number | Publication Date |
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| CN203522143U true CN203522143U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320526551.2U Expired - Fee Related CN203522143U (en) | 2013-08-27 | 2013-08-27 | Motor stalling detection circuit |
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| CN (1) | CN203522143U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970324A (en) * | 2017-04-25 | 2017-07-21 | 北京太尔时代科技有限公司 | A kind of spacing method for sensing |
| CN107479457A (en) * | 2017-05-18 | 2017-12-15 | 浙江绍兴苏泊尔生活电器有限公司 | food processor and control method thereof |
| CN107664746A (en) * | 2016-07-29 | 2018-02-06 | 杭州三花研究院有限公司 | stepper motor stall detection method |
| WO2018214801A1 (en) * | 2017-05-24 | 2018-11-29 | 杭州三花研究院有限公司 | Control system and control method |
| CN109004623A (en) * | 2017-11-09 | 2018-12-14 | 苏州工业园区艾思科技有限公司 | A method of realizing motor rotation blockage and overload judgement |
| CN109709484A (en) * | 2019-01-26 | 2019-05-03 | 西安慧晶智能科技有限公司 | A kind of brush direct current motor rotation-blocking up detection device and method |
| CN110146809A (en) * | 2019-03-27 | 2019-08-20 | 上海沪工汽车电器有限公司 | Vehicle cooling fan stall detection method |
-
2013
- 2013-08-27 CN CN201320526551.2U patent/CN203522143U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107664746A (en) * | 2016-07-29 | 2018-02-06 | 杭州三花研究院有限公司 | stepper motor stall detection method |
| CN107664746B (en) * | 2016-07-29 | 2020-11-20 | 杭州三花研究院有限公司 | Method for detecting locked rotor of stepping motor |
| CN106970324A (en) * | 2017-04-25 | 2017-07-21 | 北京太尔时代科技有限公司 | A kind of spacing method for sensing |
| CN107479457A (en) * | 2017-05-18 | 2017-12-15 | 浙江绍兴苏泊尔生活电器有限公司 | food processor and control method thereof |
| WO2018214801A1 (en) * | 2017-05-24 | 2018-11-29 | 杭州三花研究院有限公司 | Control system and control method |
| CN108931085A (en) * | 2017-05-24 | 2018-12-04 | 杭州三花研究院有限公司 | control system and control method |
| US10951142B2 (en) | 2017-05-24 | 2021-03-16 | Hangzhou Sanhua Research Institute Co., Ltd. | Control system and control method |
| CN109004623A (en) * | 2017-11-09 | 2018-12-14 | 苏州工业园区艾思科技有限公司 | A method of realizing motor rotation blockage and overload judgement |
| CN109709484A (en) * | 2019-01-26 | 2019-05-03 | 西安慧晶智能科技有限公司 | A kind of brush direct current motor rotation-blocking up detection device and method |
| CN110146809A (en) * | 2019-03-27 | 2019-08-20 | 上海沪工汽车电器有限公司 | Vehicle cooling fan stall detection method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20180827 |