CN111959656A - Pedal information sensing device and bicycle - Google Patents
Pedal information sensing device and bicycle Download PDFInfo
- Publication number
- CN111959656A CN111959656A CN202010671830.2A CN202010671830A CN111959656A CN 111959656 A CN111959656 A CN 111959656A CN 202010671830 A CN202010671830 A CN 202010671830A CN 111959656 A CN111959656 A CN 111959656A
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- gate circuit
- hall element
- flop
- flip
- signal detecting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
- B62J45/40—Sensor arrangements; Mounting thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/486—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by photo-electric detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
- G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
- H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
- H03B19/14—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a semiconductor device
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/20—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits characterised by logic function, e.g. AND, OR, NOR, NOT circuits
Abstract
The invention provides a pedal information sensing device and a bicycle, and relates to the arrangement of a pedal driving part. The pedal information detection device solves the problems of poor pedal information detection precision and complex equipment in the prior art. The pedal information sensing device is characterized in that the rotating signal generating component is a magnetic ring, the rotating signal detecting component is a Hall element A and a Hall element B, magnetic poles are circumferentially distributed on the magnetic ring, the polarities of two adjacent magnetic poles on the magnetic ring are opposite, so that a periodically-changing magnetic field is formed along the circumferential direction of the magnetic ring, the Hall element A and the Hall element B are arranged corresponding to the magnetic poles on the magnetic ring, the output signals of the two Hall elements are connected with an XOR gate circuit, the output signals of the two Hall elements are connected with the input of a first D trigger, the XOR gate circuit and the output signals of the first D trigger are connected with the input of an AND gate circuit, and the output signals of the AND gate circuit reflect pedal. The pedal information sensing device can realize accurate detection of pedal information and is realized by simple hardware.
Description
Technical Field
The invention belongs to the technical field of riding vehicle sensors, and relates to a pedal information detection device.
Background
With the popularization of electric power-assisted bicycles in the global market, the electric power-assisted bicycle is used, and the pedaling force and frequency of a rider are transmitted to a controller, so that the controller adjusts the required power-assisted ratio through a man-machine interface by the rider, and then a motor is driven to provide auxiliary power for the bicycle.
The simple sensor of frequently stepping on that early in-wheel motor was collocated, it provides the helping hand only to calculate rider's pedal speed, and the sensor that is 12 magnetic poles is common, the precision is not high, and there is not positive and negative judgement, make easily rider need rotate very big angle back motor just have the output when beginning to step on, the same also takes place when the pedal stops, the motor can delay very long time just can stop the helping hand to electric power bicycle's the experience of riding has been reduced.
At present, a speed sensor installed on the outer side of a pedal five-way switch and a pedal frequency sensor installed in the five-way switch are arranged on the market, the pedal frequency of a rider can be accurately transmitted to a controller, and the controller is used for accurately controlling the assistance ratio, so that the rider can obtain riding experience similar to that of a traditional bicycle.
When the existing pedal speed sensor needs to judge the forward and reverse directions, a built-in forward and reverse double-Hall integrated IC (integrated Circuit) or a double-Hall plus single-chip microcomputer program is adopted to realize the forward and reverse judging function, the cost is increased, and the complexity degree is increased in the program safety logic judgment of the single-chip microcomputer.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a pedal information sensing device and a bicycle.
The purpose of the invention can be realized by the following technical scheme: a pedal information sensing device comprises a rotation signal generating component and a rotation signal detecting component, wherein the rotation signal generating component generates periodic signals, namely, signals with periodic changes are formed on a rotation path, the rotation signal detecting component can detect the changes of the periodic signals, the rotation signal detecting component comprises a first signal detecting unit and a second signal detecting unit, the electrical phase angles of the first signal detecting unit and the second signal detecting unit relative to the periodic signals are different by 90 degrees or 270 degrees, so that the periodic signals generated by the two detecting units have the phase difference of 90 degrees or 270 degrees, the output signals of the first signal detecting unit and the second signal detecting unit are simultaneously connected to an exclusive-OR gate circuit, the exclusive-OR gate circuit generates a signal of the frequency multiplication of the original periodic signals, and the output signals of the first signal detecting unit and the second signal detecting unit are simultaneously connected to the input of a first D trigger, the output signals of the XOR gate circuit and the first D trigger are connected to the input of the AND gate circuit, and different signals output by the AND gate circuit reflect pedal information.
In some embodiments, the output signals of the first signal detection unit and the second signal detection unit are connected to the second D flip-flop after passing through the not gate circuit, and the xor gate circuit, the first D flip-flop and the second D flip-flop are simultaneously connected to the input of the and gate circuit. Therefore, the output state of the AND gate circuit is changed at the moment when the rotation direction of the rotation signal generating component is changed, and the delay phenomenon of the signal caused by phase delay is avoided.
In some embodiments, the exclusive-or gate circuit, the first D flip-flop and the second D flip-flop are connected to the input of the nand gate circuit, and the output of the nand gate circuit is connected to the base of the triode.
In some embodiments, the rotation signal generating component is a magnetic ring, the rotation signal detecting component is a hall element a and a hall element B, magnetic poles are circumferentially distributed on the magnetic ring, the polarities of two adjacent magnetic poles on the magnetic ring are opposite, so that a periodically changing magnetic field is formed along the circumferential direction of the magnetic ring, the hall element a and the hall element B are arranged corresponding to the magnetic poles on the magnetic ring, the electrical phase angle of the hall element a and the electrical phase angle of the hall element B relative to the magnetic ring are different by 90 degrees or 270 degrees, the output signals of the two hall elements are connected with an exclusive or gate circuit, the output signals of the two hall elements are connected with the input of the first D trigger, the exclusive or gate circuit and the output signal of the first D trigger are connected to the input of the and circuit, and.
In some embodiments, the hall element a and the hall element B are connected to the second D flip-flop after passing through the not gate circuit, and the xor gate circuit, the first D flip-flop and the second D flip-flop are simultaneously connected to the input of the and gate circuit.
In some embodiments, the hall element a and the hall element B are connected to the second D flip-flop after passing through the not gate circuit, the xor gate circuit, the first D flip-flop and the second D flip-flop are simultaneously connected to the input of the nand gate circuit, and the output of the nand gate circuit is connected to the base of the triode.
A bicycle using the pedal information sensing device is characterized in that the rotating signal generating part is fixed relative to the pedal shaft.
Compared with the prior art, the pedal information sensing device has the following advantages:
the invention can output two or more times of output signals and forward and reverse signals of the multi-polar magnetic ring by utilizing the two Hall elements and the simple and mature logic wafer, can improve the resolution of the pedaling speed, is beneficial to the riding interpretation of a power-assisted vehicle controller, improves the output sensitivity of the motor, and has the advantages of simple structure, convenient operation and low cost.
Drawings
In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having different letter suffixes may represent different examples of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed herein.
FIG. 1 is a schematic diagram of the position of a Hall sensor relative to a magnetic ring and the corresponding generated electrical waveforms;
FIG. 2 is a schematic circuit diagram according to the first embodiment;
FIG. 3 is a schematic diagram showing waveforms generated by components of the magnetic ring rotating in a counterclockwise direction according to the first embodiment;
FIG. 4 is a schematic diagram showing waveforms generated by the components of the clockwise rotation circuit of the magnetic ring according to the first embodiment;
fig. 5 is a schematic view illustrating that the magnetic ring according to the first embodiment reverses its direction when both the hall element a and the hall element B are at a low potential;
fig. 6 is a schematic view illustrating that the magnetic ring according to the first embodiment reverses its direction when both the hall element a and the hall element B are at a high potential;
FIG. 7 is a circuit diagram according to the second embodiment;
FIG. 8 is a schematic diagram showing waveforms of outputs of elements of the circuit according to the second embodiment;
FIG. 9 is a schematic view of a third embodiment;
FIG. 10 is a schematic view of the fourth embodiment.
Detailed Description
The following are specific examples of the present invention, and the technical solutions of the present invention are further described with reference to the drawings, but the present invention is not limited to these examples, and the following embodiments do not limit the invention according to the claims. Moreover, all combinations of features described in the embodiments are not necessarily essential to the solution of the invention.
It will be understood by those of ordinary skill in the art that all directional references (e.g., above, below, upward, downward, top, bottom, left, right, vertical, horizontal, etc.) are illustratively used in the figures to aid the reader's understanding and do not imply (e.g., position, orientation, or use, etc.) a limitation on the scope of the invention, which is defined by the claims appended hereto. Additionally, the term "substantially" may refer to slight imprecision or deviation in conditions, amounts, values, or dimensions, etc., some of which may be within manufacturing or tolerance limits.
Example one
As shown in fig. 1 and 2, a pedal information sensing device includes a rotation signal generating component and a rotation signal detecting component, the rotation signal generating component generates periodic signals, i.e. periodic signals are formed on a rotation path, the rotation signal detecting component can detect the changes of the periodic signals, the rotation signal generating component is a magnetic ring, the rotation signal detecting component is a hall element a and a hall element B, magnetic poles are distributed on the circumference of the magnetic ring, the polarities of two adjacent magnetic poles on the magnetic ring are opposite, so that a periodically changing magnetic field is formed along the circumference of the magnetic ring, the hall element a and the hall element B are arranged corresponding to the magnetic poles on the magnetic ring, so that the hall element senses the polarity of the magnetic field, i.e. the intensity is also periodically changing at different positions relative to the magnetic ring, and the phase angle 5 of the hall element a and the hall element B relative to the periodic magnetic field of the magnetic ring is different by 90, the hall element a and the hall element B convert periodic signals into corresponding square waves to be output, the electrical phase angles of the hall element a and the hall element B relative to the square waves generated by the magnetic ring are different by 90 degrees (of course, the arrangement mode of the hall element C relative to the hall element a by 270 degrees electrical phase angle can be the same as the principle), the output signals of the two hall elements are connected with an exclusive-or gate circuit, the output signals of the two hall elements are connected with the input of the first D trigger, the output signals of the exclusive-or gate circuit and the first D trigger are connected with the input of the and gate circuit, and the output signal of the and gate circuit reflects pedal information.
As shown in fig. 3, when the multi-polar magnetic ring is in a forward rotation state (i.e. in a reverse clock direction), the output of the hall element a, the hall element B, the xor gate circuit, the D flip-flop and the and gate have waveforms shown in fig. 3, at this time, the output signal of the D flip-flop is at a high level, so that the output signal of the and gate is equal to the frequency multiplication of the output signals of the hall element a and the hall element B, the output of the frequency signal not only reflects the rotation direction of the magnetic ring but also reflects the rotation speed, and the direction of the magnetic ring can be consistent when the vehicle is driven forward by foot pedal, so that the driving foot pedal speed can.
As shown in fig. 4, when the multi-polarity magnetic ring is in a reverse state, the waveforms of the output of the hall element a, the hall element B, the xor gate circuit, the output of the D flip-flop, and the output of the and gate are shown in fig. 4, and at this time, the output signal of the D flip-flop is at a low level, so that the output signal of the and gate is kept at a low level, and the rotation speed of the magnetic ring is not reflected.
When the pedal information sensing device is arranged on a bicycle for application, the rotating signal generating part is fixed relative to the pedal shaft, so that the pedal shaft drives the pedal shaft to rotate, and the Hall element is fixedly arranged relative to the bicycle body, so that the change of the pedal action is detected, and the controller controls the motor and other parts of the bicycle to work according to the information, for example, the assisting power of the motor is controlled.
The hall element is a hall element that can output the detected periodic variation signal in a square wave form as shown in the figure, for example, a44E integrated hall switch or the like.
Example two
For example, as shown in fig. 5, when the forward rotation is continuously output to the position of the marked line CCW- > CW, the reverse rotation occurs, that is, the hall element a and the hall element B are both at low potentials, and at this time, the first D flip-flop can immediately determine the state, that is, the first D flip-flop can be changed from a high potential to a continuously low potential, so that the output of the and gate can reflect the change of the magnetic ring rotation direction. However, as shown in fig. 6, when the reversal position occurs when the hall element a and the hall element B are both at a high potential, the first D flip-flop needs to wait for the next trigger position to be changed into a low potential, which may cause an extra waveform output at the output of the and gate, and the extra signal may cause a false determination for the controller, delay in response, and further affect the riding experience.
In view of the above, unlike the above embodiments, as shown in fig. 7, the signals of the hall element a and the hall element B of the present embodiment are inverted by the not gate circuit and then connected to the second D flip-flop, and the xor gate circuit, the first D flip-flop and the second D flip-flop are simultaneously connected to the input of the and gate circuit, that is, the result of the and of the xor gate circuit, the first D flip-flop and the second D flip-flop is output. Thus, as shown in fig. 8, since the signal input to the hall sensor of the second D flip-flop is the inverted signal, when the position corresponding to the magnetic ring inversion occurs when both the hall element a and the hall element B are at the high potential, the second D flip-flop can instantly determine the state, that is, the second D flip-flop can instantly change from the high potential to the continuous low potential, so that the output of the and gate can instantly change, and the change from the high potential to the bottom can instantly reflect the change of the magnetic ring steering, thereby avoiding a waveform delay caused by one D flip-flop.
EXAMPLE III
As shown in fig. 9, different from the above embodiment, the hall element a and the hall element B are connected to the second D flip-flop after passing through the not gate circuit, the xor gate circuit, the first D flip-flop and the second D flip-flop are simultaneously connected to the input of the nand gate circuit, and the output of the nand gate circuit is connected to the base of the triode, so that the change of the sensing signal is reflected by the triode.
Example four
As shown in fig. 10, different from the above embodiment, the magnetic ring is replaced by a photometric ring, different magnetic poles are replaced by materials with different light reflection rates (of course, materials with different light transmittances are also possible), that is, the reflected light at different materials on the annular component is different, and the detecting component is replaced by an optical signal detecting element (A, B, C), such as a reflective light intensity detecting sensor (or other photoelectric sensor), so that a wave similar to that of the hall element is correspondingly generated, and other circuits are unchanged, and the detection can also be realized. Of course, the magnetic ring can be replaced by other devices capable of generating periodic signals in the circumferential direction of rotation, and the purpose of the invention can be achieved as long as the signals capable of generating periodic changes are detected by the detection element and then output as rectangular wave signals.
Although some terms are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention. The order of execution of the operations, steps, and the like in the apparatuses and methods shown in the specification and drawings may be implemented in any order as long as the output of the preceding process is not used in the subsequent process, unless otherwise specified. The descriptions using "first", "next", etc. for convenience of description do not imply that they must be performed in this order.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (7)
1. A pedal information sensing device comprises a rotation signal generating component and a rotation signal detecting component, wherein the rotation signal generating component generates periodic signals, and the rotation signal detecting component detects the change of the periodic signals, and is characterized in that the rotation signal detecting component comprises a first signal detecting unit and a second signal detecting unit, the electrical phase angles of the first signal detecting unit and the second signal detecting unit relative to the periodic signals are different by 90 degrees or 270 degrees, the output signals of the first signal detecting unit and the second signal detecting unit are connected to an exclusive-or gate circuit, the output signals of the first signal detecting unit and the second signal detecting unit are connected to the input of a first D trigger, the exclusive-or gate circuit and the output signal of the first D trigger are connected to the input of an AND gate circuit, and the output signal of the AND gate circuit reflects pedal information.
2. The stepping information sensing device as claimed in claim 1, wherein the output signals of the first signal detecting unit and the second signal detecting unit are connected to the second D flip-flop through the not gate circuit, and the xor gate circuit, the first D flip-flop and the second D flip-flop are simultaneously connected to the input of the and gate circuit.
3. The stepping information sensing device as claimed in claim 2, wherein the exclusive-or gate circuit, the first D flip-flop and the second D flip-flop are connected to an input of the nand gate circuit at the same time, and an output of the nand gate circuit is connected to a base of the transistor.
4. The stepping information sensing device as claimed in claim 1, wherein the rotation signal generating part is a magnetic ring, the rotation signal detecting part is a hall element a and a hall element B, magnetic poles are circumferentially distributed on the magnetic ring, the two adjacent magnetic poles on the magnetic ring have opposite polarities, so that a periodically changing magnetic field is formed along the circumferential direction of the magnetic ring, the hall element a and the hall element B are arranged corresponding to the magnetic poles on the magnetic ring, the electrical phase angle of the hall element a and the hall element B relative to the magnetic ring is different by 90 degrees or 270 degrees, the two hall element output signals are connected to an exclusive or gate circuit, the two hall element output signals are connected to an input of the first D flip-flop, the exclusive or gate circuit and an output signal of the first D flip-flop are connected to an input of the and gate circuit, and an output signal of the and gate circuit reflects the.
5. The stepping information sensing device as claimed in claim 4, wherein the Hall element A and the Hall element B are connected to a second D flip-flop through an NOT gate circuit, and the XOR gate circuit, the first D flip-flop and the second D flip-flop are simultaneously connected to the input of the AND gate circuit.
6. The stepping information sensing device as claimed in claim 5, wherein the Hall element A and the Hall element B are connected to the second D flip-flop through the NOT gate circuit, the XOR gate circuit, the first D flip-flop and the second D flip-flop are simultaneously connected to an input of the NAND gate circuit, and an output of the NAND gate circuit is connected to a base of the triode.
7. A cycle provided with a pedal information sensing device according to claim 1, 2, 3, 4, 5 or 6, wherein the rotation signal generating member is fixed with respect to the pedal shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010671830.2A CN111959656B (en) | 2020-07-14 | 2020-07-14 | Pedal information sensing device and bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010671830.2A CN111959656B (en) | 2020-07-14 | 2020-07-14 | Pedal information sensing device and bicycle |
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| CN111959656A true CN111959656A (en) | 2020-11-20 |
| CN111959656B CN111959656B (en) | 2021-07-06 |
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| CN202010671830.2A Active CN111959656B (en) | 2020-07-14 | 2020-07-14 | Pedal information sensing device and bicycle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113325192A (en) * | 2021-05-28 | 2021-08-31 | 湖南湘依铁路机车电器股份有限公司 | Frequency doubling method for shaft end Hall speed sensor |
| TWI801889B (en) * | 2021-06-01 | 2023-05-11 | 巨大機械工業股份有限公司 | Detector for bicycle |
| TWI817835B (en) * | 2022-11-18 | 2023-10-01 | 宏碁股份有限公司 | Power-assisted vehicle |
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| US20160176473A1 (en) * | 2014-12-17 | 2016-06-23 | VeloMetro Mobility Inc. | Drivetrain system for an electrically assisted human powered vehicle |
| JP2017178257A (en) * | 2016-03-31 | 2017-10-05 | 本田技研工業株式会社 | Master cylinder arrangement structure of saddle riding type vehicle |
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| CN2606486Y (en) * | 2003-02-28 | 2004-03-10 | 重庆宗申技术开发研究有限公司 | Electric spray magnetic rotor on motorcycle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113325192A (en) * | 2021-05-28 | 2021-08-31 | 湖南湘依铁路机车电器股份有限公司 | Frequency doubling method for shaft end Hall speed sensor |
| CN113325192B (en) * | 2021-05-28 | 2024-01-16 | 湖南湘依铁路机车电器股份有限公司 | Frequency multiplication method for shaft end Hall speed sensor |
| TWI801889B (en) * | 2021-06-01 | 2023-05-11 | 巨大機械工業股份有限公司 | Detector for bicycle |
| TWI817835B (en) * | 2022-11-18 | 2023-10-01 | 宏碁股份有限公司 | Power-assisted vehicle |
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| CN111959656B (en) | 2021-07-06 |
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