CN221251625U - Pedal frequency signal processing device of electric bicycle and electric bicycle - Google Patents
Pedal frequency signal processing device of electric bicycle and electric bicycle Download PDFInfo
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- CN221251625U CN221251625U CN202323303681.2U CN202323303681U CN221251625U CN 221251625 U CN221251625 U CN 221251625U CN 202323303681 U CN202323303681 U CN 202323303681U CN 221251625 U CN221251625 U CN 221251625U
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Abstract
The utility model discloses a pedal frequency signal processing device of an electric bicycle and the electric bicycle, which comprises: the rotary table capable of rotating relatively, a plurality of magnetic steels arranged on the rotary table, and a first Hall device and a second Hall device which are arranged on one side of the rotary table and fixed relatively, wherein the first Hall device and the second Hall device are different in sequence of the treading frequency signals generated when the first Hall device treads forward and the second Hall device treads backward, and only the treading frequency signals generated when the first Hall device treads forward are output. The utility model has the advantages that: the pedal frequency signal is not output when the electric bicycle is stepped reversely, the controller is not required to judge, the power-assisted safety control function of the electric bicycle is realized, and the safety of the electric bicycle is improved.
Description
Technical Field
The utility model belongs to the field of electric power assisted vehicle controllers, and particularly relates to a pedal frequency signal processing device of an electric power assisted vehicle and the electric power assisted vehicle.
Background
The electric bicycle gives auxiliary power when riding or pushing, namely, gives auxiliary power when stepping or pushing by manpower. While the drive system of an electric bicycle generally comprises: the electric bicycle comprises an instrument, a controller, a battery, a pedal frequency sensor, a motor and other components, wherein a driving system generates boosting force when the electric bicycle is ridden, and is a key system of the electric bicycle. The existing pedal frequency sensor often comprises one or two Hall devices and a rotary table uniformly provided with magnets. The pulse output is generated during the forward and reverse rotation, and the duty ratio of the pulse output during the forward and reverse rotation is different. However, the power-assisted control of the electric power-assisted vehicle requires a forward-rotation pedal frequency signal, the reverse-rotation pedal frequency signal is invalid, and when the reverse-rotation signal is given to the controller, the controller recognizes that an error occurs, so that the potential safety hazard of driving control is brought.
Disclosure of utility model
The utility model aims at: the pedal frequency signal processing device of the electric bicycle and the electric bicycle are provided, the reverse signal is not output, the controller is prevented from judging and identifying, the power-assisted safety control function of the electric bicycle is realized, and the safety of the electric bicycle is improved.
The first technical scheme of the utility model is as follows: a pedal frequency signal processing device of an electric bicycle, comprising: the rotary table capable of rotating relatively, a plurality of magnetic steels arranged on the rotary table, a first Hall device, a second Hall device, a processing circuit and a singlechip, wherein the first Hall device and the second Hall device are arranged on one side of the rotary table and are fixed relatively, the processing circuit is connected with the first Hall device and the second Hall device, the singlechip is connected with the processing circuit, the sequence of the treading frequency signals generated when the first Hall device and the second Hall device are treaded forward and backward is different, and the treading frequency signals when the first Hall device and the second Hall device are treaded forward are only output through the singlechip.
On the basis of the technical scheme, the method further comprises the following auxiliary technical scheme:
preferably, the turntable is provided with a central hole, and the magnetic steel is uniformly circumferentially arranged relative to the central hole.
Preferably, the sectional area of the magnetic steel is smaller than the sectional area of the central hole, and the first hall device and the second hall device are arranged on the same side of the turntable in parallel.
The second technical scheme of the utility model is as follows: an electric bicycle, comprising: the device comprises a controller, a motor connected with the output of the controller and a treading frequency signal processing device for feeding back signals to a processing circuit, wherein the treading frequency signal processing device is the treading frequency signal processing device in the first technical scheme, and the treading frequency signal processing device only outputs treading frequency signals when treading forward to the controller.
Preferably, the processing circuit comprises a first and a second processing circuit, wherein the first hall device is connected with the first processing circuit and the second hall device is connected with the second processing circuit.
Preferably, the first processing circuit includes a first triode Q11 having a base connected to the first hall device and an emitter connected to ground, a first bead FB1 having one end connected to a collector of the first triode Q11, a first grounding capacitor C11 having one end connected to the other end of the first bead FB1 and the other end grounded, a first connection resistor R12 having one end connected in parallel to the first grounding capacitor C11 and connected to the other end of the first bead FB1, and a second grounding capacitor C12 having one end connected to the other end of the first connection resistor R12 and the other end grounded.
Preferably, the second processing circuit includes a second triode Q21 with a base connected to the first hall device and an emitter connected to ground, a second magnetic bead FB2 with one end connected to a collector of the second triode Q21, a third grounding capacitor C21 with one end connected to the other end of the second magnetic bead FB2 and the other end grounded, a second connection resistor R22 with one end connected to the third grounding capacitor C21 in parallel and connected to the other end of the second magnetic bead FB2, and a fourth grounding capacitor C22 with one end connected to the other end of the second connection resistor R22 and the other end grounded.
Preferably, the singlechip 346 is connected to the other ends of the first connecting resistor R12 and the second connecting resistor R22, respectively.
Preferably, the transistor further comprises a third connecting resistor R11 with one end connected with the collector of the first triode Q11 and the other end connected with a power supply, and a fourth connecting resistor R21 with one end connected with the collector of the second triode Q21 and the other end connected with the power supply.
Preferably, when the magnetic steel passes through the first hall device, the first hall device generates a high-level pulse, so that the base electrode of the first triode Q11 is high level, and the first triode Q11 is conducted, and meanwhile, the collector electrode of the first triode Q11 outputs a low level; when the magnetic steel passes through the first Hall device, the base electrode of the first triode Q11 is changed into a low level, the first triode Q11 is not conducted, and at the moment, the collector electrode of the first triode Q11 is output into a high level.
The utility model has the advantages that: the utility model does not output a pedal frequency signal when the electric bicycle is stepped reversely, does not need to be judged by a controller, realizes the safety control function of assisting the electric bicycle, and improves the safety of the electric bicycle.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a functional block diagram of the present utility model;
FIG. 2 is a schematic diagram of the structure of the present utility model;
FIG. 3 is a circuit block diagram of the present utility model;
Fig. 4 is a specific circuit diagram of the present utility model.
Detailed Description
Hereinafter, various embodiments of the present disclosure will be more fully described. The present disclosure is capable of various embodiments and of modifications and variations therein. However, it should be understood that: there is no intention to limit the scope of the disclosure to the specific embodiments disclosed herein, but rather the disclosure is to be interpreted to cover all modifications, equivalents, and/or alternatives falling within the spirit and scope of the various embodiments of the disclosure.
Hereinafter, the terms "comprises" or "comprising" as may be used in various embodiments of the present disclosure indicate the presence of the disclosed functions, operations or elements, and are not limiting of the addition of one or more functions, operations or elements. Furthermore, as used in various embodiments of the present disclosure, the terms "comprises," "comprising," and their cognate terms are intended to refer to a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be interpreted as first excluding the existence of or increasing likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
Examples: referring to fig. 1 to 4, the present utility model discloses a first embodiment of a pedal frequency signal processing device for an electric bicycle, which is used for the electric bicycle and comprises: the rotary table 310 capable of rotating relatively, a plurality of magnetic steels 312 arranged on the rotary table 310, a first hall device 320, a second hall device 322 arranged on one side of the rotary table 310 and fixed relatively, a processing circuit connected with the first hall device 320, the second hall device 322, and a singlechip 346 connected with the processing circuit, wherein the first hall device 320 and the second hall device 322 generate different treading frequency signals in sequence when treading forward and treading backward, and only output the treading frequency signals when treading forward.
The turntable 310 is disc-shaped, and is provided with a central hole 314, and the magnetic steel 312 is uniformly circumferentially arranged on the turntable 310 relative to the central hole 314. The cross-sectional area of the magnetic steel 312 is smaller than the cross-sectional area of the center hole 314. The magnetic steel 312 and the adjacent hall device generate an induction phenomenon. The central hole 314 is adapted to mate with a central axle of the pedal structure of an electric bicycle. The bottom bracket is driven to rotate the turntable 310 when the pedal structure rotates. The first and second hall devices 320, 322 are disposed in parallel on the same side of the turntable 310.
The utility model discloses a second embodiment of an electric bicycle, which comprises: the controller 100, the motor 200 connected to the output of the controller 100, and the frequency-treading signal processing device 300 feeding back a signal to the controller 100, wherein the frequency-treading signal processing device 300 is the frequency-treading signal processing device in the first embodiment. A main single-chip microcomputer is provided in the controller 100.
The processing circuitry and the single-chip 346 together form the circuit module 340 and are disposed on a printed circuit board, and the turntable 310 rotates relative to the circuit module 340. The single-chip microcomputer 346 is connected to a main single-chip microcomputer within the controller 100. The processing circuitry includes first and second processing circuits 342, 344, wherein the first hall device 320 is coupled to the first processing circuit 342 and the second hall device 322 is coupled to the second processing circuit 344. The first processing circuit 342 includes a first triode Q11 having a base connected to the first hall device 320 and an emitter connected to ground, a first magnetic bead FB1 having one end connected to a collector of the first triode Q11, a first grounding capacitor C11 having one end connected to the other end of the first magnetic bead FB1 and the other end grounded, a first connection resistor R12 having one end connected in parallel to the first grounding capacitor C11 and connected to the other end of the first magnetic bead FB1, and a second grounding capacitor C12 having one end connected to the other end of the first connection resistor R12 and the other end grounded. The second processing circuit 344 includes a second triode Q21 having a base connected to the first hall device 322 and an emitter connected to ground, a second magnetic bead FB2 having one end connected to a collector of the second triode Q21, a third grounding capacitor C21 having one end connected to the other end of the second magnetic bead FB2 and the other end grounded, a second connection resistor R22 having one end connected in parallel to the third grounding capacitor C21 and connected to the other end of the second magnetic bead FB2, and a fourth grounding capacitor C22 having one end connected to the other end of the second connection resistor R22 and the other end grounded. The singlechip 346 is connected to the other ends of the first connecting resistor R12 and the second connecting resistor R22, respectively. Preferably, the processing circuit further includes a third connecting resistor R11 having one end connected to the collector of the first transistor Q11 and the other end connected to the power supply, and a fourth connecting resistor R21 having one end connected to the collector of the second transistor Q21 and the other end connected to the power supply. The processing circuit sends only the frequency signal during forward pedaling to the singlechip 346. The power supply is a 5 volt power supply in this embodiment. The first magnetic bead FB1 and the first and second grounding capacitors C11 and C12 play a role in filtering out high-frequency interference.
When the magnetic steel 312 passes through the first hall device 320, the first hall device 320 generates a high-level pulse, so that the base electrode of the first triode Q11 is high level, and the first triode Q11 is conducted, and meanwhile, the collector electrode of the first triode Q11 outputs a low level; when the magnetic steel 312 passes through the first hall device 320, the base of the first triode Q11 changes to a low level, the first triode Q11 is not turned on, and at this time, the collector output of the first triode Q11 is a high level. The alternating of the high and low levels thereby forms a step frequency signal. The forward rotation or the reverse rotation of the pedal frequency signal processor can be judged according to the sequence of the generation of the pedal frequency signals defined in advance. Similarly, the principle of the step frequency signal generated by the second hall device 322 is the same, so that the description thereof will not be repeated. The controller 100 controls the electric bicycle power according to the pedaling frequency signal, the two hall devices generate different signal sequences when pedaling forward and pedaling backward, the first and second processing circuits judge forward or backward according to the pedaling frequency signal generated by the two hall devices, and send the pedaling frequency signal when pedaling forward to the singlechip 346. The singlechip 346 detects the sequence of pulse signals generated by the first Hall device and the second Hall device, and further judges whether the pulse signals are forward or reverse. When the positive rotation is judged, pulse signals generated by the first Hall device and the second Hall device are sent to a main singlechip of the controller; when the first hall device and the second hall device are judged to be inverted, pulse signals generated by the first hall device and the second hall device are not transmitted. The main singlechip of the controller controls the power output of the motor 200 according to the frequency of the treading frequency signal.
Therefore, the utility model outputs the pedal frequency signals generated by the two Hall components through the processing circuit, wherein the pedal frequency signals are output in the forward pedal rotation process and the pedal frequency signals are not output to the controller of the electric bicycle in the reverse rotation process. Namely, the processing circuit judges the sequence of the treading frequency signals (two treading signals TA and TB) generated by the two Hall devices, and when the treading signal TA is generated before the treading signal TB, the treading signal TA is judged to be forward treading; when the tread signal TA is generated after the tread signal TB, it is determined that the tread is reversed.
The utility model has the advantages that: the pedal frequency signal processing device does not output pedal frequency signals when the pedal frequency signal processing device is oppositely stepped, a controller is not required to judge, the power-assisted safety control function of the electric bicycle is realized, and the safety of the electric bicycle is improved.
The above embodiments are merely for illustrating the technical concept and features of the present utility model, and are not intended to limit the scope of the present utility model to those skilled in the art to understand the present utility model and implement the same. All equivalent changes or modifications made according to the spirit of the main technical proposal of the utility model should be covered in the protection scope of the utility model.
Claims (10)
1. The utility model provides a pedal frequency signal processing device of electric bicycle which characterized in that it includes: the device comprises a rotary table (310) capable of rotating relatively, a plurality of magnetic steels (312) arranged on the rotary table (310), first and second Hall devices (320, 322) arranged on one side of the rotary table (310) and fixed relatively, a processing circuit connected with the first and second Hall devices (320, 322) and a singlechip (346) connected with the processing circuit, wherein the first and second Hall devices (320, 322) are different in sequence of treading frequency signals generated when treading forward and treading backward, and only treading frequency signals when treading forward are output through the singlechip (346).
2. The pedal frequency signal processing device of an electric bicycle according to claim 1, wherein: the turntable (310) is provided with a central hole (314), and the magnetic steel (312) is uniformly circumferentially arranged relative to the central hole (314).
3. The pedal frequency signal processing device of an electric bicycle according to claim 2, wherein: the cross section area of the magnetic steel (312) is smaller than that of the central hole (314), and the first Hall device (320) and the second Hall device (322) are arranged on the same side of the turntable (310) in parallel.
4. An electric bicycle is characterized in that the electric bicycle comprises: the device comprises a controller (100), a motor (200) connected with the output of the controller (100), and a frequency signal processing device (300) for feeding back signals to a processing circuit, wherein the frequency signal processing device (300) is the frequency signal processing device according to claim 1, and the frequency signal processing device (300) only outputs the frequency signal when the controller (100) is stepped forward.
5. The electric bicycle of claim 4, wherein: the processing circuit includes first and second processing circuits (342, 344), wherein the first hall device (320) is coupled to the first processing circuit (342) and the second hall device (322) is coupled to the second processing circuit (344).
6. The electric bicycle of claim 5, wherein: the first processing circuit (342) comprises a first triode (Q11) with a base connected with the first Hall device (320) and an emitter connected with the ground, a first magnetic bead (FB 1) with one end connected with the collector of the first triode (Q11), a first grounding capacitor (C11) with one end connected with the other end of the first magnetic bead (FB 1) and the other end grounded, a first connecting resistor (R12) with one end connected with the first grounding capacitor (C11) in parallel and connected with the other end of the first magnetic bead (FB 1), and a second grounding capacitor (C12) with one end connected with the other end of the first connecting resistor (R12) and the other end grounded.
7. The electric bicycle of claim 6, wherein: the second processing circuit (344) comprises a second triode (Q21) with a base connected with the first Hall device (322) and an emitter connected with the ground, a second magnetic bead (FB 2) with one end connected with the collector of the second triode (Q21), a third grounding capacitor (C21) with one end connected with the other end of the second magnetic bead (FB 2) and the other end grounded, a second connecting resistor (R22) with one end connected with the third grounding capacitor (C21) in parallel and connected with the other end of the second magnetic bead (FB 2), and a fourth grounding capacitor (C22) with one end connected with the other end of the second connecting resistor (R22) and the other end grounded.
8. The electric bicycle of claim 7, wherein: the singlechip (346) is respectively connected with the other ends of the first connecting resistor (R12) and the second connecting resistor (R22).
9. An electric bicycle according to claim 8, further comprising a third connecting resistor (R11) having one end connected to the collector of the first transistor (Q11) and the other end connected to the power supply, and a fourth connecting resistor (R21) having one end connected to the collector of the second transistor (Q21) and the other end connected to the power supply.
10. An electric bicycle as claimed in claim 6 or 7 or 8 or 9, characterized in that: when the magnetic steel (312) passes through the first Hall device (320), the first Hall device (320) generates high-level pulse, so that the base electrode of the first triode (Q11) is high-level, the first triode (Q11) is conducted, and meanwhile, the collector electrode of the first triode (Q11) outputs low level; when the magnetic steel (312) passes through the first Hall device (320), the base electrode of the first triode (Q11) is changed to be low level, the first triode (Q11) is not conducted, and at the moment, the collector electrode of the first triode (Q11) is output to be high level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323303681.2U CN221251625U (en) | 2023-12-05 | 2023-12-05 | Pedal frequency signal processing device of electric bicycle and electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323303681.2U CN221251625U (en) | 2023-12-05 | 2023-12-05 | Pedal frequency signal processing device of electric bicycle and electric bicycle |
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| Publication Number | Publication Date |
|---|---|
| CN221251625U true CN221251625U (en) | 2024-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323303681.2U Active CN221251625U (en) | 2023-12-05 | 2023-12-05 | Pedal frequency signal processing device of electric bicycle and electric bicycle |
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| CN (1) | CN221251625U (en) |
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- 2023-12-05 CN CN202323303681.2U patent/CN221251625U/en active Active
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