CN204150203U - Electrical bicycle middle shaft sensor-based system - Google Patents
Electrical bicycle middle shaft sensor-based system Download PDFInfo
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- CN204150203U CN204150203U CN201420585397.0U CN201420585397U CN204150203U CN 204150203 U CN204150203 U CN 204150203U CN 201420585397 U CN201420585397 U CN 201420585397U CN 204150203 U CN204150203 U CN 204150203U
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Abstract
A kind of electrical bicycle middle shaft sensor-based system, it is made up of rotating part and fixed part; Rotating part is made up of axis, magnet steel, stop sleeve, strain sensor, the second support, Secondary section, and the end face of stop sleeve is provided with circuit card, and this circuit card comprises signal amplification unit, signal madulation unit, voltage stabilizing rectification unit; Fixed part presses transfer device, signal processing unit, power supply change-over device part to form by bearing, Hall element, the first support, primary winding, signal generation apparatus, power amplification unit, signal demodulation unit, frequency, and the sensitive surface of Hall element is relative with the sensitive surface of magnet steel.
Description
Technical field
The utility model relates to a kind of electrical bicycle middle shaft sensor-based system, belongs to electrical bicycle middle shaft sensing equipment technical field.
Background technology
Electrical Bicycle, as a kind of vehicle of brisk laborsaving, environmental protection, replaces bicycle gradually and becomes important short range walking-replacing tool.Traditional Electrical Bicycle be all by hand the horsepower output of regulable control motor to carry out speed governing, the horsepower output of motor cannot be regulated according to the size of moment of torsion suffered by bicycle middle shaft, this Electrical Bicycle ubiquity speed of a motor vehicle is too fast, consumption of current is large, the shortcoming such as frequent of charging.Horsepower output can be adjusted according to the size of moment of torsion suffered by electrical bicycle middle shaft to allow the drive motor of Electrical Bicycle, usually chain wheel axle torsion sensing device is set on Electrical Bicycle, utilize strain sensor to sense moment suffered by this bicycle, then transfer to controller whether enough with the power judging rider and provide.Strain-gauge is arranged on the rotation central axis that directly driven by stretcher and crank by existing Electrical Bicycle usually, by sensor, the sensing signal that this strain-gauge sends is sent to controller again, thus, the sensing signal sent by this strain-gauge can extrapolate the power that rider provides accurately.Because this strain-gauge is with central axis, signal pig-tail wire is easy to break down because of winding.At present, the Electrical Bicycle of a part adopts the mode signal transmission of friction reed and powers to rotating part, due to friction reed contact easily occur wearing and tearing, be oxidized, burn, the problem such as Mechanical Contact is beated, very easily cause dropout, and easily occur spurious signal, to such an extent as to controller cannot extrapolate the power that rider provides exactly.In a word, the problems such as existing electrical bicycle middle shaft torque sensing device ubiquity complex structure, delay of response, fault rate be high.
Utility model content
The purpose of this utility model provides a kind of electrical bicycle middle shaft sensor-based system; In this electrical bicycle middle shaft sensor-based system, its torque signal can carry out transmission over radio according to coil mutual inductance principle, can reduce the occurrence probability of spurious signal, improves safety and the traveling comfort of Electrical Bicycle; In this axis sensor-based system, because its coil mutual inductance is that rotating part circuit is powered, ensure that, under low speed state, its torque measurement circuit still can obtain enough operating voltages; In addition, this axis sensor-based system, Hall element can be responded to according to the rotation of magnet steel, exports corresponding signal, and this signal is after signal processing unit processes, and output speed signal and direction signal, can reach the object detecting axis rotating speed and direction; This axis sensor-based system structure is simple, and signal accuracy is high, strong interference immunity, failure rate is low, long service life, can improve the stability that Electrical Bicycle travels, be applicable to popularizing.
In order to achieve the above object, the utility model adopts following technical scheme to realize:
A kind of electrical bicycle middle shaft sensor-based system, it is made up of rotating part and fixed part, it is characterized in that: rotating part is made up of axis, magnet steel, stop sleeve, strain sensor, the second support, Secondary section, magnet steel circumferentially distributes and is fixed on axis, stop sleeve, strain sensor, second support is separately fixed on axis, the end face of stop sleeve is provided with circuit card, this circuit card comprises signal amplification unit, signal madulation unit, voltage stabilizing rectification unit, this circuit card is provided with the pig-tail wire exported for signal, strain sensor is connected by wire with circuit card, second support is wound with the output primary of the specific number of turns, output primary and circuit board signal export pig-tail wire and are connected, the burning voltage that voltage stabilizing rectification unit exports is strain sensor, signal amplification unit and signal madulation unit are powered, fixed part presses transfer device, signal processing unit, power supply change-over device part to form by bearing, Hall element, the first support, primary winding, signal generation apparatus, power amplification unit, signal demodulation unit, frequency, 2 bearings are placed on axis respectively, Hall element is fixed on the first support, and be connected with signal processing unit, the sensitive surface of Hall element is relative with the sensitive surface of magnet steel, first carrying sleeve dress on the secondary support bracket, first support is wound with specific number of turns primary winding, signal generation apparatus is connected with primary winding by power amplification unit, primary winding presses transfer device to be connected by signal demodulation unit with frequency, power supply change-over device is connected with the power supply on Electrical Bicycle, Electrical Bicycle power supply is changed out after two kinds of different voltages through power supply change-over device, be respectively signal generation apparatus and power amplification unit is powered.
Principle of work:
Electrical Bicycle power supply changes out the different voltage of 3.3V and 6V two kinds through power supply change-over device, wherein 3.3V voltage is that signal generation apparatus is powered, 6V voltage is that power amplification unit is powered, signal generation apparatus can produce the square wave of 100KHz, this square wave is input to primary winding after power amplification unit amplifies, primary winding produces corresponding electromagnetic field, according to coil mutual inductance principle, output primary produces corresponding induced electric motive force, the induced electric motive force that output primary produces is through voltage stabilizing rectification unit stable output voltage, for strain sensor, signal amplification unit and signal madulation unit are powered, in the process of riding Electrical Bicycle, when rider uses stretcher to step on to pedal, electrical bicycle middle shaft is subject to rider's applied force and chain wheel axle torsion is changed, after strain sensor detects the change of chain wheel axle torsion, corresponding voltage signal can be produced according to the size of change in torque, this voltage signal feeds back on output primary through signal amplification unit and signal madulation unit, according to coil mutual inductance principle, the change of output primary can cause the change of primary winding electromagnetic field, the change of primary winding electromagnetic field demodulates frequency signal through signal demodulation unit, frequency signal converts voltage signal to through overfrequency pressure transfer device and exports, this voltage signal can control the horsepower output of electric bicycle motor after treatment, when central axis, the magnet steel circumferentially distributed fixing on axis also can rotate thereupon, and above magnet steel, the Hall element of correspondence position is understood the change of inductive magnetic steel and exports corresponding signal, and this signal is through signal processing unit output speed signal and direction signal.
The utility model mainly has following beneficial effect:
1, in this electrical bicycle middle shaft sensor-based system, its torque signal can carry out transmission over radio according to coil mutual inductance principle, can reduce the occurrence probability of spurious signal, improves safety and the traveling comfort of Electrical Bicycle.
2, in this axis sensor-based system, because its coil mutual inductance is that rotating part circuit is powered, ensure that, under low speed state, its torque measurement circuit still can obtain enough operating voltages.
3, this axis sensor-based system, Hall element can be responded to according to the rotation of magnet steel, exports corresponding signal, and this signal is after signal processing unit processes, and output speed signal and direction signal, can reach the object detecting axis rotating speed and direction.
4, this axis sensor-based system structure is simple, and signal accuracy is high, strong interference immunity, failure rate is low, long service life, can improve the stability that Electrical Bicycle travels, be applicable to popularizing.
Accompanying drawing explanation
Accompanying drawing 1 is the planar structure schematic diagram of the utility model electrical bicycle middle shaft sensor-based system;
Accompanying drawing 2 is cross-sectional view of the utility model electrical bicycle middle shaft sensor-based system;
Accompanying drawing 3 is circuit module connection diagrams of the utility model electrical bicycle middle shaft sensor-based system.
As shown in the figure, in figure, various piece is represented by following Arabic number:
1. axis, 2. bearing, 3. Hall element, 4. magnet steel, 5. the first support, 6. primary winding, 7. stop sleeve, 8. strain sensor, 9. the second support, 10. output primary, 11. signal amplification units, 12. signal madulation unit, 13. voltage stabilizing rectification units, 14. signal generation apparatus, 15. power amplification units, 16. signal demodulation units, 17. press transfer device, 18. signal processing units, 19. power supply change-over devices frequently.
Below in conjunction with embodiment and Figure of description, the utility model is described in further detail.
Detailed description of the invention
Embodiment
As Figure 1-3, a kind of electrical bicycle middle shaft sensor-based system, it is made up of rotating part and fixed part.
As Figure 1-3, rotating part is by axis 1, magnet steel 4, stop sleeve 7, strain sensor 8, second support 9, output primary 10 part forms, magnet steel 4 circumferentially distributes and is fixed on axis 1, stop sleeve 7, strain sensor 8, second support 9 is separately fixed on axis 1, the end face of stop sleeve 7 is provided with circuit card, this circuit card comprises signal amplification unit 11, signal madulation unit 12, voltage stabilizing rectification unit 13, this circuit card is provided with the pig-tail wire exported for signal, strain sensor 8 is connected by wire with this circuit card, second support 9 is wound with the output primary 10 of the specific number of turns, output primary 10 and circuit board signal export pig-tail wire and are connected, the burning voltage that voltage stabilizing rectification unit 13 exports is strain sensor 8, signal amplification unit 11 and signal madulation unit 12 are powered.
As Figure 1-3, fixed part is by bearing 2, Hall element 3, first support 5, primary winding 6, signal generation apparatus 14, power amplification unit 15, signal demodulation unit 16, frequently pressure transfer device 17, signal processing unit 18, power supply change-over device 19 part forms, 2 bearings 2 are placed on axis 1 respectively, Hall element 3 is fixed on the first support 5, and be connected with signal processing unit 18, the sensitive surface of Hall element 3 is relative with the sensitive surface of magnet steel 4, first support 5 is sleeved on the second support 9, first support 5 is wound with specific number of turns primary winding 6, signal generation apparatus 14 is connected with primary winding 6 by power amplification unit 15, primary winding 6 presses transfer device 17 to be connected by signal demodulation unit 16 with frequency, power supply change-over device 19 is connected with the power supply on Electrical Bicycle, Electrical Bicycle power supply is changed out after two kinds of different voltages through power supply change-over device 19, be respectively signal generation apparatus 14 and power amplification unit 15 is powered.
Claims (1)
1. an electrical bicycle middle shaft sensor-based system, it is made up of rotating part and fixed part, it is characterized in that: rotating part is made up of axis (1), magnet steel (4), stop sleeve (7), strain sensor (8), the second support (9), output primary (10) part, magnet steel (4) circumferentially distributes and is fixed on axis (1), stop sleeve (7), strain sensor (8), second support (9) is separately fixed on axis (1), the end face of stop sleeve (7) is provided with circuit card, this circuit card comprises signal amplification unit (11), signal madulation unit (12), voltage stabilizing rectification unit (13), this circuit card is provided with the pig-tail wire exported for signal, strain sensor (8) is connected by wire with circuit card, second support (9) is wound with the output primary (10) of the specific number of turns, output primary (10) and circuit board signal export pig-tail wire and are connected, the burning voltage that voltage stabilizing rectification unit (13) exports is strain sensor (8), signal amplification unit (11) and signal madulation unit (12) power supply, fixed part presses transfer device (17), signal processing unit (18), power supply change-over device (19) part to form by bearing (2), Hall element (3), the first support (5), primary winding (6), signal generation apparatus (14), power amplification unit (15), signal demodulation unit (16), frequency, 2 bearings (2) are placed on axis (1) respectively, Hall element (3) is fixed on the first support (5), and be connected with signal processing unit (18), the sensitive surface of Hall element (3) is relative with the sensitive surface of magnet steel (4), first support (5) is sleeved on the second support (9), first support (5) is wound with specific number of turns primary winding (6), signal generation apparatus (14) is connected with primary winding (6) by power amplification unit (15), primary winding (6) presses transfer device (17) to be connected by signal demodulation unit (16) with frequency, power supply change-over device (19) is connected with the power supply on Electrical Bicycle, Electrical Bicycle power supply is changed out after two kinds of different voltages through power supply change-over device (19), be respectively signal generation apparatus (14) and power amplification unit (15) power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585397.0U CN204150203U (en) | 2014-09-24 | 2014-09-24 | Electrical bicycle middle shaft sensor-based system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420585397.0U CN204150203U (en) | 2014-09-24 | 2014-09-24 | Electrical bicycle middle shaft sensor-based system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204150203U true CN204150203U (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420585397.0U Expired - Fee Related CN204150203U (en) | 2014-09-24 | 2014-09-24 | Electrical bicycle middle shaft sensor-based system |
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| CN (1) | CN204150203U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043583A (en) * | 2016-07-21 | 2016-10-26 | 苏州盛亿电机有限公司 | Middle axle reverse braking signal transmission device with electric bicycle operating state determination function |
| CN107054555A (en) * | 2017-06-08 | 2017-08-18 | 杭州欣硬科技有限公司 | Multi-speed bicycle and its gear changing mechanism and device |
| CN110789643A (en) * | 2019-12-09 | 2020-02-14 | 苏州捷诚科技有限公司 | Central-axis wireless energy signal transmission torque sensor system |
| WO2023017211A1 (en) * | 2021-08-10 | 2023-02-16 | Revonte Oy | Pedal shaft measurement arrangement and system, and method for controlling power unit |
-
2014
- 2014-09-24 CN CN201420585397.0U patent/CN204150203U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043583A (en) * | 2016-07-21 | 2016-10-26 | 苏州盛亿电机有限公司 | Middle axle reverse braking signal transmission device with electric bicycle operating state determination function |
| CN107054555A (en) * | 2017-06-08 | 2017-08-18 | 杭州欣硬科技有限公司 | Multi-speed bicycle and its gear changing mechanism and device |
| CN110789643A (en) * | 2019-12-09 | 2020-02-14 | 苏州捷诚科技有限公司 | Central-axis wireless energy signal transmission torque sensor system |
| WO2023017211A1 (en) * | 2021-08-10 | 2023-02-16 | Revonte Oy | Pedal shaft measurement arrangement and system, and method for controlling power unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20160924 |
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| CF01 | Termination of patent right due to non-payment of annual fee |