CN203933599U - A kind of electric machine controller pulses switch device - Google Patents
A kind of electric machine controller pulses switch device Download PDFInfo
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- CN203933599U CN203933599U CN201420282857.2U CN201420282857U CN203933599U CN 203933599 U CN203933599 U CN 203933599U CN 201420282857 U CN201420282857 U CN 201420282857U CN 203933599 U CN203933599 U CN 203933599U
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- 238000002955 isolation Methods 0.000 claims abstract description 14
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- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 3
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- 238000004519 manufacturing process Methods 0.000 abstract description 3
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- 230000006698 induction Effects 0.000 description 4
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- 238000003466 welding Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
The utility model discloses a kind of electric machine controller pulses switch device, comprise pulse acquisition circuit, signal amplification circuit, countdown circuit, signal isolation circuit; The pulse signal that the speed probe of installing on described pulse acquisition circuit collection motor sends, by described signal amplification circuit, strengthen after driving force, by described frequency dividing circuit frequency division, obtained being applicable to the umber of pulse of tachometer on panel board, then export tachometer to through described signal isolation circuit; Pulses switch device of the present utility model directly drives the impulse output circuit of tachometer on panel board, makes whole-vehicle wiring convenient, has saved on motor and has additionally installed the expense of speed probe additional, has reduced product cost, has improved production efficiency.
Description
Technical field
The utility model relates to motor control assembly field, refers to especially a kind of electric machine controller pulses switch device.
Background technology
Along with the rise of New Energy Industry, electric automobile is with low cost operation, and the advantages such as environmental protection enter into people's life.Low-speed electronic car, as a kind of novel walking-replacing tool, has occupied very large market in rural area.But the motor controller that low-speed electronic car uses is at present mostly DC brush control system.The shortcoming of DC brush control system is that maintenance of motor expense is high, and maximum speed is low, and climbing capacity is limited, and these factors are restricting the popularization of low-speed electronic car always.AC induction motor control system can effectively overcome the shortcoming of DC brush control system, but itself also exists inferior position, is exactly that cost is high, control is complicated.Wherein, when controller is controlled AC induction motor, the speed probe power supply machine controller that minimum 64 pulses need to be installed on motor uses, but the rotating speed on panel board shows, need to receive the tach signal of 8 pulses, current way is that the speed probe of two different models is installed on motor, has so not only increased cost, and makes the manufacture of motor complicated.
Utility model content
In view of this, the purpose of this utility model is to propose a kind of electric machine controller pulses switch device of simple in structure, efficient work.
A kind of electric machine controller pulses switch device providing based on above-mentioned purpose the utility model, comprises pulse acquisition circuit, signal amplification circuit, countdown circuit, signal isolation circuit; The pulse signal that the speed probe of installing on described pulse acquisition circuit collection motor sends, by described signal amplification circuit, strengthen after driving force, by described frequency dividing circuit frequency division, obtained being applicable to the umber of pulse of tachometer on panel board, then export tachometer to through described signal isolation circuit.
Preferably, described pulse acquisition circuit comprises interface chip, inductance, electric capacity and some divider resistances; The pulse signal of motor speed sensor output is through described inductance and capacitor filtering, and undertaken, after dividing potential drop, by described interface chip, exporting by described some divider resistances.
Preferably, described amplifying circuit is transistor amplifier.
Preferably, described countdown circuit comprises that the model of described integrated circuit is SN74HC590 for input pulse signal being carried out to the integrated circuit of frequency division.
Preferably, described signal isolation circuit comprises the optocoupler for signal isolation.
As can be seen from above, a kind of pulses switch device that is suitable for the use of low-speed electronic car AC induction motor controller that the utility model provides, has saved on motor and has additionally installed the expense of speed probe additional, has reduced product cost.Pulses switch device of the present utility model directly drives the impulse output circuit of tachometer on panel board, makes whole-vehicle wiring convenient, has improved production efficiency, has reduced cost of labor.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the pulse acquisition circuit of the utility model embodiment;
Fig. 2 is the circuit diagram of the signal amplification circuit of the utility model embodiment;
Fig. 3 is the circuit diagram of the countdown circuit of the utility model embodiment;
Fig. 4 is the circuit diagram of the signal isolation circuit of the utility model embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is further described.
A kind of electric machine controller pulses switch device that the utility model embodiment provides, comprises pulse acquisition circuit, signal amplification circuit, countdown circuit, signal isolation circuit; The pulse signal that the speed probe of installing on described pulse acquisition circuit collection motor sends, by described signal amplification circuit, strengthen after driving force, by described frequency dividing circuit frequency division, obtained being applicable to the umber of pulse of tachometer on panel board, then export tachometer to through described signal isolation circuit.
With reference to figure 1, it is the circuit diagram of the pulse acquisition circuit of the utility model embodiment.
As an embodiment, the pulse signal Encoder CH2 of the speed probe output of installing from Electric Vehicle's Alternating asynchronous machine enters after the pulse acquisition circuit of the present embodiment, first, after inductance L 6 and capacitor C 108 filtering, by resistance R 172, R62, R66, R67, carry out dividing potential drop.Difference due to speed probe type, supply power voltage is also different, by the value of configuration resistance R 172, R62, R66 and R67, the voltage that assurance is input to interface chip U5 is identical, the signals collecting of realization to different voltage type encoders, wherein, the model of described interface chip U5 is SN74AHCT14.Interface chip U5 is the inverter with schmidt trigger function, can realize the shaping feature to input pulse signal simultaneously.
The pulse signal of being exported by speed probe has two-way, i.e. pulse signal Encoder CH1 and the Encoder CH2 of two-way phase phasic difference 90 degree.The present embodiment is fetched wherein any road pulse signal and is carried out frequency division processing.
With reference to figure 2, it is the circuit diagram of the signal amplification circuit of the utility model embodiment.
By the signal of described pulse acquisition circuit output, enter the signal amplification circuit of the present embodiment, by triode Q13, undertaken after signal amplification, for late-class circuit.During work, triode Q13 is in saturated.
With reference to figure 3, it is the circuit diagram of the countdown circuit of the utility model embodiment.
In the present embodiment, use integrated circuit U27 to complete the frequency division effect to input pulse signal, wherein, the model of described integrated circuit U27 is SN74HC590AN.Integrated circuit U27 is 8 binary counters, by QA～QH, is realized and is count down to 256 function from 0.U27 /OE ,/CCKEN remains valid always, when/CCLR is effective, starts to carry out counting.Input signal Speed is from CCLK and the input of RCLK end, and output signal MTSPD_OUT exports from QA～QH by resistance R 180～R187 apolegamy, reaches the frequency division effect of carrying out varying number.QA realizes 2 frequency divisions to input signal, and QB realizes 4 frequency divisions, and QC realizes 8 frequency divisions, and QD realizes 16 frequency divisions, and QE realizes 32 frequency divisions, and QF realizes 64 frequency divisions, and QG realizes 128 frequency divisions, and QH realizes 256 frequency divisions.In the present embodiment, low-speed vehicle is 64 pulses with the pulse coder of AC induction motor, thus select from the output of QC end, by welding resistance R 182, and resistance R 180, R181, the mode that R183～R187 does not weld realizes 8 frequency divisions, reaches the object of output 8 pulses.If what motor used is the encoder of other umber of pulses, can pass through divider ratio=input pulse number/8, calculate required divider ratio, then correspond to QA～QH end, welding QA～QH just can realize the output of 8 pulse signals after holding corresponding resistance.
With reference to figure 4, it is the circuit diagram of the signal isolation circuit of the utility model embodiment.
In order to prevent interfering with each other between pulses switch mount board level output signal MOTR_SPD and external meters input signal MTSPD_OUT, use optocoupler that plate level signal MOTR_SPD and instrument end signal MTSPD_OUT are isolated, reached jamproof effect.Meanwhile, the PWR_EXT of optocoupler end, can connect the power supply of different electric pressures according to different instrument demands, realizes the function of pulse signals level conversion.
Those of ordinary skill in the field are to be understood that: the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle; any modification of making, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (5)
1. an electric machine controller pulses switch device, is characterized in that, comprises pulse acquisition circuit, signal amplification circuit, countdown circuit, signal isolation circuit; The pulse signal that the speed probe of installing on described pulse acquisition circuit collection motor sends, by described signal amplification circuit, strengthen after driving force, by described frequency dividing circuit frequency division, obtained being applicable to the umber of pulse of tachometer on panel board, then export tachometer to through described signal isolation circuit.
2. electric machine controller pulses switch device according to claim 1, is characterized in that, described pulse acquisition circuit comprises interface chip, inductance, electric capacity and some divider resistances; The pulse signal of motor speed sensor output is through described inductance and capacitor filtering, and undertaken, after dividing potential drop, by described interface chip, exporting by described some divider resistances.
3. electric machine controller pulses switch device according to claim 1, is characterized in that, described amplifying circuit is transistor amplifier.
4. electric machine controller pulses switch device according to claim 1, is characterized in that, described countdown circuit comprises that the model of described integrated circuit is SN74HC590 for input pulse signal being carried out to the integrated circuit of frequency division.
5. electric machine controller pulses switch device according to claim 1, is characterized in that, described signal isolation circuit comprises the optocoupler for signal isolation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420282857.2U CN203933599U (en) | 2014-05-29 | 2014-05-29 | A kind of electric machine controller pulses switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420282857.2U CN203933599U (en) | 2014-05-29 | 2014-05-29 | A kind of electric machine controller pulses switch device |
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| Publication Number | Publication Date |
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| CN203933599U true CN203933599U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420282857.2U Expired - Lifetime CN203933599U (en) | 2014-05-29 | 2014-05-29 | A kind of electric machine controller pulses switch device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125631A (en) * | 2016-08-27 | 2016-11-16 | 常州市武起常乐电机有限公司 | A kind of motor magnetic encoder |
| CN110764439A (en) * | 2018-07-25 | 2020-02-07 | 上海英威腾工业技术有限公司 | Servo drive pulse output frequency divider and use method thereof |
| CN114859124A (en) * | 2022-04-28 | 2022-08-05 | 北京芯格诺微电子有限公司 | Configuration resistance detection method and circuit capable of switching gears |
-
2014
- 2014-05-29 CN CN201420282857.2U patent/CN203933599U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125631A (en) * | 2016-08-27 | 2016-11-16 | 常州市武起常乐电机有限公司 | A kind of motor magnetic encoder |
| CN110764439A (en) * | 2018-07-25 | 2020-02-07 | 上海英威腾工业技术有限公司 | Servo drive pulse output frequency divider and use method thereof |
| CN114859124A (en) * | 2022-04-28 | 2022-08-05 | 北京芯格诺微电子有限公司 | Configuration resistance detection method and circuit capable of switching gears |
| CN114859124B (en) * | 2022-04-28 | 2023-01-31 | 北京芯格诺微电子有限公司 | Gear-switchable configuration resistance detection method and circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200624 Address after: 100076 Beijing, Fengtai District, South Road, No. 1, Patentee after: BEIJING INSTITUTE OF SPACE LAUNCH TECHNOLOGY Address before: 4003, room 2, building 17, South Yongchang Road, Beijing economic and Technological Development Zone, Beijing, Daxing District 100076, China Patentee before: AEROSPACE NEW LONG MARCH ELECTRIC VEHICLE TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141105 |
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| CX01 | Expiry of patent term |