CN111731428A - Electric vehicle rotating handle device - Google Patents
Electric vehicle rotating handle device Download PDFInfo
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- CN111731428A CN111731428A CN202010707318.9A CN202010707318A CN111731428A CN 111731428 A CN111731428 A CN 111731428A CN 202010707318 A CN202010707318 A CN 202010707318A CN 111731428 A CN111731428 A CN 111731428A
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- 230000003247 decreasing effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
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- 230000005856 abnormality Effects 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- 241000233805 Phoenix Species 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K23/00—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips
- B62K23/02—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips hand actuated
- B62K23/04—Twist grips
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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
- B62J3/00—Acoustic signal devices; Arrangement of such devices on cycles
- B62J3/10—Electrical devices
- B62J3/12—Buzzers; Horns with electrically driven airflow
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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
- B62J45/41—Sensor arrangements; Mounting thereof characterised by the type of sensor
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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
- B62J6/00—Arrangement of optical signalling or lighting devices on cycles; Mounting or supporting thereof; Circuits therefor
- B62J6/22—Warning or information lights
- B62J6/24—Warning or information lights warning or informing the rider, e.g. low fuel warning lights
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16576—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing DC or AC voltage with one threshold
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
The embodiment of the invention discloses a handle rotating device of an electric vehicle, which comprises: the device comprises a rotating assembly, a fixing assembly and a motor controller; a magnet is arranged on the rotating component; the fixed assembly is provided with a first Hall element and a second Hall element, the rotating assembly is nested in the fixed assembly and rotates relative to the fixed assembly, so that the magnet moves relative to the first Hall element and the second Hall element, the first Hall element induces a magnetic field signal of the magnet to generate a first voltage signal, and the second Hall element induces the magnetic field signal of the magnet to generate a second voltage signal; and the motor controller is used for adjusting the rotating speed of the motor according to the first voltage signal or the second voltage signal when detecting that the first voltage signal and the second voltage signal meet a preset voltage rule. According to the embodiment of the invention, the speed regulation is realized by adopting the double Hall elements, whether the handle turning demand signal is reliable or not is judged according to the two Hall voltage parameter values, and the anti-interference performance, the stability and the safety are stronger.
Description
Technical Field
The embodiment of the invention relates to the technical field of electric vehicles, in particular to a rotating handle device of an electric vehicle.
Background
At present, the electric vehicle industry develops rapidly, and the electric vehicle has various types, such as two-wheeled electric bicycles, light motorcycles and electric motorcycles, three-wheeled electric vehicles and four-wheeled electric vehicles, and the market share is very high. The electric vehicle adopts a handle to regulate the speed. When the handle rotates, the Hall element integrated in the handle detects the change of the magnetic field and outputs a corresponding voltage signal, so that the electric vehicle controller realizes speed regulation.
However, the electric vehicle based on the speed regulation structure has signal transmission errors under interference, and the electric vehicle controller receives wrong hall voltage signals, so that the electric vehicle controller makes wrong judgment, generates wrong actions and affects driving safety.
Disclosure of Invention
The embodiment of the invention provides a rotating handle device of an electric vehicle, which aims to solve the problem of low anti-interference performance of the conventional rotating handle.
The embodiment of the invention provides a rotating handle device of an electric vehicle, which comprises: the device comprises a rotating assembly, a fixing assembly and a motor controller;
a magnet is arranged on the rotating component;
the fixed assembly is provided with a first Hall element and a second Hall element, the rotating assembly is nested in the fixed assembly and rotates relative to the fixed assembly, so that the magnet moves relative to the first Hall element and the second Hall element, the first Hall element induces the magnetic field signal of the magnet to generate a first voltage signal, and the second Hall element induces the magnetic field signal of the magnet to generate a second voltage signal;
the motor controller is used for adjusting the rotating speed of the motor according to the first voltage signal or the second voltage signal when detecting that the first voltage signal and the second voltage signal meet a preset voltage rule.
Furthermore, the Hall element comprises an anode connected with the anode lead, a cathode connected with the cathode lead and a signal end connected with the signal transmission line;
the motor controller comprises a power supply unit, a signal processing unit and a motor driving unit, wherein the power supply unit supplies power to the Hall element through the positive lead and the negative lead, the signal processing unit respectively acquires the first voltage signal and the second voltage signal through two signal transmission lines, a speed change instruction is generated when the two voltage signals are detected to meet a preset voltage rule, and the motor driving unit adjusts the rotating speed according to the speed change instruction.
Further, the first hall element and the second hall element are arranged in close proximity and located on the first side or the second side of the magnet, and the rotation direction of the magnet is the same as or opposite to the direction in which the first side of the magnet points to the second side of the magnet.
Further, the signal processing unit is configured to generate the speed change instruction according to the first voltage signal when detecting that a voltage difference between the first voltage signal and the second voltage signal is within a preset difference range.
Further, the first hall element is located on a first side of the magnet, the second hall element is located on a second side of the magnet, and a rotation direction of the magnet is the same as or opposite to a direction in which the first side of the magnet points to the second side of the magnet.
Further, the signal processing unit is configured to generate the speed change instruction according to the first voltage signal when detecting that both the voltage change rate of the first voltage signal and the voltage change rate of the second voltage signal satisfy a second voltage preset rule.
Further, the first hall element and the second hall element are arranged at intervals and are located on the first side or the second side of the magnet, the second hall element is far away from the magnet relative to the first hall element, and the rotation direction of the magnet is the same as or opposite to the direction in which the first side of the magnet points to the second side of the magnet.
Further, the signal processing unit is configured to generate the speed change instruction according to the first voltage signal when detecting that a voltage proportional deviation between the first voltage signal and the second voltage signal is within a deviation preset range.
Further, the electric vehicle handle device further comprises: an alarm unit;
the alarm unit is electrically connected with the motor controller, and the motor controller is used for generating a fault alarm signal to enable the alarm unit to carry out handle turning fault alarm when detecting that the first voltage signal and/or the second voltage signal do not meet the preset voltage rule.
In the embodiment of the invention, the rotating component rotates, the first Hall element induces the magnetic field signal of the magnet to generate a first voltage signal, and the second Hall element induces the magnetic field signal of the magnet to generate a second voltage signal; and when detecting that the first voltage signal and the second voltage signal meet a preset voltage rule, the motor controller adjusts the rotating speed of the motor according to the first voltage signal or the second voltage signal. In the embodiment of the invention, the speed regulation is realized by adopting the double Hall elements, the speed regulation is carried out only if the voltage signals or voltage related data of the double Hall elements meet the preset voltage rule, otherwise, the corresponding operation is not carried out, so that whether the handle turning demand signal is reliable or not is judged according to the two Hall voltage parameter values, and the anti-interference performance, the stability and the safety are stronger.
Drawings
To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description, although being some specific embodiments of the present invention, can be extended and extended to other structures and drawings by those skilled in the art according to the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested by the various embodiments of the present invention, without making sure that these should be within the scope of the claims of the present invention.
Fig. 1 is a schematic view of a twist grip device of an electric vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the connection between the motor controller and the Hall element according to the embodiment of the invention;
FIG. 3 is a schematic view of the maximum limit position of the handle device of the electric vehicle according to the embodiment of the invention;
FIG. 4 is a schematic view of another handle device for an electric vehicle according to an embodiment of the present invention;
FIG. 5 is a schematic view of a handle device for an electric vehicle according to another embodiment of the present invention;
fig. 6 is a circuit structure diagram of an electric vehicle handle device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the basic idea disclosed and suggested by the embodiments of the present invention, are within the scope of the present invention.
Referring to fig. 1, a schematic view of a twist grip device of an electric vehicle according to an embodiment of the present invention is shown. The electric vehicle rotating handle device provided by the embodiment is formed by adopting a software and/or hardware structure and is configured in an electric vehicle, the electric vehicle can be any electric vehicle integrated with a rotating handle, such as an electric bicycle, an electric motorcycle, an electric tricycle, an electric quadricycle and the like, and the rotating handle can be a handle or a turntable. It is understood that the handle device comprises a handle and a relevant control component electrically connected with the handle, and the handle and the relevant control component can be integrated together or separately arranged without particularly limiting the structural position. Fig. 2 is a schematic view of the connection between the motor controller and the hall element, and fig. 3 is a schematic view of another handle device for an electric vehicle.
The electric motor car that this embodiment provided changes handle device includes: the device comprises a rotating assembly 1, a fixed assembly 2 and a motor controller 3; a magnet 11 is arranged on the rotating component 1; the fixed component 2 is provided with a first Hall element 21 and a second Hall element 22, the rotating component 1 is nested in the fixed component 2 and rotates relative to the fixed component 2, so that the magnet 11 moves relative to the first Hall element 21 and the second Hall element 22, the first Hall element 21 senses a magnetic field signal of the magnet 11 to generate a first voltage signal, and the second Hall element 22 senses a magnetic field signal of the magnet 11 to generate a second voltage signal; and the motor controller 3 is used for adjusting the rotating speed of the motor according to the first voltage signal or the second voltage signal when detecting that the first voltage signal and the second voltage signal meet a preset voltage rule.
In this embodiment, the electric motor car is changeed the handle device and is included runner assembly 1, and runner assembly 1 is integrated on changeing the handle, and the user rotates to change the handle in order to drive runner assembly 1 and rotate in step or the integral type. The electric vehicle rotating handle device also comprises a fixed component 2, wherein the fixed component 2 is fixed on the vehicle body and is normally butted with the rotating handle, and the rotating component 1 is nested in the fixed component 2 and rotates relative to the fixed component 2, and the rotating direction is shown by a double-headed arrow in figure 1. The user rotates the rotating handle to drive the rotating component 1 to rotate anticlockwise or clockwise in the fixed component 2.
It can be understood that the opening range of the rotating handle is set to be 0-60 degrees; setting the left end face of the magnet 11 to be at a position corresponding to the opening degree of the rotating handle of 0 degree when being located at a point A, setting the left end face of the magnet 11 to be at a position corresponding to the maximum opening degree of the rotating handle of 60 degrees when being located at a point C, setting the opening degree of the rotating handle to be 0 degree and the left end face of the magnet 11 to be located at the point A when the vehicle is in a parking state, a power-off state and other initial states, and setting the opening degree of the rotating handle to be not 0 degree and the left end face of the magnet 11 to be between AC when the vehicle is in a driving process, wherein the opening degree of the rotating handle can reach 60 degrees maximally and the; fig. 1 shows the initial position of the handle at an opening of 0 deg., and fig. 3 shows the extreme position of the handle at an opening of 60 deg.. Therefore, when the vehicle accelerates, the opening degree of the rotating handle is increased from small to large by clockwise rotation of the rotating handle, namely, the left side end face of the magnet 11 can move to the point C at the maximum, when the vehicle decelerates, the opening degree of the rotating handle is reduced from large to small by counterclockwise rotation of the rotating handle, and the left side end face of the magnet 11 can move to the point A at the minimum.
In this embodiment, a magnet 11 is disposed on the rotating component 1, and the optional magnet 11 is disposed on the end surface of the rotating component 1 facing the fixed component 2. The fixed assembly 2 is provided with a first Hall element 21 and a second Hall element 22, and the optional first Hall element 21 and the optional second Hall element 22 are both arranged on the end surface of the fixed assembly 2 facing the rotating assembly 1. When a user rotates the rotating handle to drive the rotating assembly 1 to rotate counterclockwise or clockwise in the fixed assembly 2, the distance between the magnet 11 on the rotating assembly 1 and the first hall element 21 on the fixed assembly 2 changes, and the first hall element 21 senses different magnetic field signals in the rotating process of the magnet 11, so that a linearly changing voltage signal, i.e., a first voltage signal, is output. Similarly, the distance between the magnet 11 on the rotating assembly 1 and the second hall element 22 on the fixed assembly 2 changes, and the second hall element 22 senses different magnetic field signals in the rotating process of the magnet 11, so as to output a linearly changing voltage signal, i.e. a second voltage signal.
It should be noted that if the magnetic field signal sensed by the first hall element and/or the second hall element changes abruptly due to the external magnetic interference, the output first voltage signal and/or the output second voltage signal no longer changes linearly.
The motor controller 3 is electrically connected to the first hall element 21 and the second hall element 22, and the motor controller 3 can be selected to supply power to the first hall element 21 and the second hall element 22, respectively. The motor controller 3 also obtains the first voltage signal of the first hall element 21 and the second voltage signal of the second hall element 22, respectively, and performs speed regulation. Specifically, the motor controller 3 is configured to detect whether the first voltage signal and the second voltage signal satisfy a preset voltage rule, and adjust the rotation speed of the motor according to the first voltage signal or the second voltage signal if the first voltage signal and the second voltage signal satisfy the preset voltage rule.
The selectable Hall element comprises an anode connected with the anode lead, a cathode connected with the cathode lead and a signal end OUT connected with the signal transmission line; the motor controller 3 includes a power supply unit 31, a signal processing unit 32 and a motor driving unit 33, the power supply unit 31 supplies power to the hall element through a positive lead and a negative lead, the signal processing unit 32 respectively obtains a first voltage signal and a second voltage signal through two signal transmission lines, and generates a speed change instruction when detecting that the two voltage signals meet a preset voltage rule, and the motor driving unit 33 adjusts the rotating speed according to the speed change instruction.
The motor device comprises a motor controller 3 and a motor 4, the motor controller 3 is electrically connected with the motor 4, and a motor driving unit 33 adjusts the rotating speed of the motor 4 according to a speed change instruction. It is understood that if the signal processing unit 32 detects that the two voltage signals do not satisfy the preset voltage rule, no gear shift command is generated, and the motor driving unit 33 keeps the current rotation speed unchanged.
It should be noted that after the positions of the first hall element 21, the second hall element 22 and the magnet 11 are set, the test handle is shipped before delivery, the test handle is rotated from 0 ° to 60 ° and then from 60 ° to 0 °, and under a normal state, the first voltage data of the first hall element 21 under different magnetic fields and the second voltage data of the second hall element 22 under different magnetic fields are obtained through detection, and voltage-related data between the first voltage data and the second voltage data are also obtained through detection, where the first voltage data, the second voltage data and the voltage-related data between the first voltage data and the second voltage data are all used as preset voltage rules, and the preset voltage rules are stored in a memory of the electric vehicle, where the memory may be a memory such as a flash memory, and the memory may be integrated in the motor controller 3.
In this embodiment, the motor rotation speed is set to be associated with the first voltage data, and is adjusted according to the first voltage signal, and the association relationship is not changed in subsequent normal use. Alternatively, in other embodiments, the selectable motor speed is associated with the second voltage data and adjusted according to the second voltage signal, with the association remaining in normal subsequent use.
In actual use, the motor controller 3 obtains a first voltage signal and a second voltage signal, the first voltage signal can be compared with first voltage data in the memory, and when the first voltage signal is matched with the first voltage data according to the magnetic field intensity change rule, the first voltage signal is determined to meet a first voltage data rule; similarly, comparing the second voltage signal with second voltage data in the memory, and determining that the second voltage signal meets a second voltage data rule when the second voltage signal is matched with the second voltage data according to the rule of magnetic field intensity change; and if the first voltage signal and the second voltage signal can be determined to meet the preset voltage rule, adjusting the rotating speed of the motor according to the first voltage signal related to the rotating speed of the motor. Alternatively, the first and second electrodes may be,
the motor controller 3 obtains a first voltage signal and a second voltage signal, obtains voltage-related data between the first voltage signal and the second voltage signal, compares the voltage-related data with voltage-related data between the first voltage data and the second voltage data in the memory, and if the voltage-related data is matched with prestored voltage-related data, can determine that the first voltage signal and the second voltage signal meet a preset voltage rule, and then adjusts the rotating speed of the motor according to the first voltage signal associated with the rotating speed of the motor.
As described above, if the voltage signal generated by at least one hall element suddenly changes and does not satisfy the preset voltage rule when the motor is disturbed or has a fault, the motor controller may determine that an abnormality such as disturbance or fault occurs according to the signals of the two hall elements. Specifically, the change rule of the first voltage signal output by the first hall element 21 exceeds the first voltage data, the change rule of the second voltage signal output by the second hall element 22 exceeds the second voltage data, or the change rule of the voltage-related data between the first voltage signal and the second voltage signal is different from the change rule of the prestored voltage-related data, so that a fault can be determined or interference can be received, and corresponding motor rotation speed adjustment is not performed any more.
In this embodiment, the rotating assembly rotates, the first hall element senses a magnetic field signal of the magnet to generate a first voltage signal, and the second hall element senses a magnetic field signal of the magnet to generate a second voltage signal; and when detecting that the first voltage signal and the second voltage signal meet a preset voltage rule, the motor controller adjusts the rotating speed of the motor according to the first voltage signal or the second voltage signal. In the embodiment, the speed regulation is realized by adopting the double Hall elements, the speed regulation is only carried out if the voltage signals or the voltage related data of the double Hall elements meet the preset voltage rule, otherwise, the corresponding operation is not carried out, so that whether the handle transferring demand signal is reliable or not is judged according to the two Hall voltage parameter values, and the anti-interference performance, the stability and the safety are higher.
Illustratively, based on the above technical solution, as shown in fig. 1 and 3, the first hall element 21 is located on a first side of the magnet 11, and the second hall element 22 is located on a second side of the magnet 11, and the direction of rotation of the magnet 11 is the same as or opposite to the direction in which the first side of the magnet 11 points to the second side of the magnet 11. The selectable signal processing unit is used for generating a speed change instruction according to the first voltage signal when detecting that the voltage change rate of the first voltage signal and the voltage change rate of the second voltage signal both meet a preset voltage rule. The first side of the optional magnet 11 is the left end face of the magnet 11, and the second side of the magnet 11 is the right end face of the magnet 11.
Referring to fig. 1 and 3, in an accelerating state of the electric vehicle, the rotating handle assembly 1 rotates clockwise, a rotation direction of the magnet 11 is the same as a direction in which the first side of the magnet 11 points to the second side of the magnet 11, a distance between the first hall element 21 and the magnet 11 is increased from small to large, a magnetic field signal of the magnet 11, which is sensed by the first hall element 21, is decreased from large, and a first voltage data which is linearly decreased is generated in a pre-factory test; under the deceleration state of the electric vehicle, the rotating handle component 1 rotates anticlockwise, the rotating direction of the magnet 11 is opposite to the direction of the first side of the magnet 11 pointing to the second side of the magnet 11, the distance between the first Hall element 21 and the magnet 11 is reduced from large to small, a magnetic field signal of the magnet 11 induced by the first Hall element 21 is reduced from small to large, and linearly increased first voltage data is generated in a test before delivery. Similarly, the second voltage data is linearly increased in the acceleration state and linearly decreased in the deceleration state. For example, in the acceleration state, the absolute value of the voltage increment of the first voltage data is almost equal to the voltage increment of the second voltage data for a certain period of time.
The two Hall sensors are arranged at two ends of the magnet, so that two Hall voltage signals output by the two Hall sensors change from large to small and from small to large, and the difference of the change rates of the two Hall voltages at any moment is small and almost consistent under normal conditions, so that whether interference exists can be judged by judging whether the voltage change rates of the two Hall voltage signals are consistent. If the speed is not consistent with the preset speed, the motor controller gives a speed change command, and if the speed is not consistent with the preset speed, the motor controller reports a fault to the motor controller, so that the speed is prevented from being disturbed and changed due to other interference. If the handle turning device is interfered or has a fault, the voltage signal generated by the first Hall element changes suddenly, and/or the voltage signal generated by the second Hall element changes suddenly, so that the voltage change rate difference of the two Hall voltage signals is large.
In actual use, the first hall element 21 generates a first voltage signal according to the magnetic field signal of the magnet 11, and the second hall element 22 generates a second voltage signal according to the magnetic field signal of the magnet 11. When the signal processing unit determines that the voltage change rate of the first voltage signal and the voltage change rate of the second voltage signal both meet a preset voltage rule, the electric vehicle is not interfered by the outside or has a fault, and at the moment, a speed change instruction is generated according to the first voltage signal.
If the first voltage signal is in a curve change, a linear increase or a discrete state change and/or the second voltage signal is in a curve change, a linear decrease or a discrete state change in the current acceleration state, the signal processing unit detects that the voltage change rate of the first voltage signal and the voltage change rate of the second voltage signal do not meet the voltage preset rule in the acceleration state. At the moment, the fact that the electric vehicle is subjected to external interference or faults can be judged, the signal processing unit cannot produce speed change instructions, and then the motor does not change the speed and keeps running at the current speed.
In this embodiment, speed regulation is realized by using two hall elements, the two hall sensors transmit a voltage signal Ua and Ub respectively, the voltage change rates of the two voltage signals both satisfy the voltage change rule under normal conditions, and when a rotating handle is interfered or works abnormally, at least one of Ua and Ub does not satisfy the voltage change rule. In actual work, a motor controller such as an MCU receives Ua and Ub, and if a voltage signal meets a voltage change rule of the motor controller, the MCU adjusts the speed correspondingly according to a Hall voltage signal of the Ua; otherwise, the MCU judges that the handle is in failure and does not perform corresponding action any more. In conclusion, the double-Hall speed regulation can judge whether the handle turning demand signal is reliable or not according to two Hall voltage parameter values, and the mode has stronger anti-interference performance.
Illustratively, on the basis of the above technical solution, as shown in fig. 4, the first hall element 21 and the second hall element 22 may be disposed adjacent to each other and located on the first side or the second side of the magnet 11, and the rotation direction of the magnet 11 is the same as or opposite to the direction in which the first side of the magnet 11 points to the second side of the magnet 11. The signal processing unit is used for generating a speed change instruction according to the first voltage signal when detecting that the voltage difference value of the first voltage signal and the second voltage signal is within a preset difference value range. The first side of the optional magnet 11 is the left end face of the magnet 11, the second side is the right end face of the magnet 11, and the two hall elements are located on the left end face of the magnet 11. The close proximity arrangement is that on the basis of ensuring the insulation arrangement of the two Hall elements, the two Hall elements are almost in contact with each other, and the arrangement direction of the two Hall elements is parallel to or perpendicular to the rotation direction.
The first hall element 21 and the second hall element 22 are arranged in close proximity and on the first side of the magnet 11, so that magnetic field signals sensed by the first hall element 21 and the second hall element 22 are almost consistent in a normal state, and a difference value between the first voltage data and the second voltage data corresponding to any time does not exceed a preset difference range. For example, in an accelerating state of the electric vehicle, the rotating handle assembly 1 rotates clockwise, the rotating direction of the magnet 11 is the same as the direction in which the first side of the magnet 11 points to the second side of the magnet 11, the distances between the two hall elements and the magnet 11 are both small and large, the magnetic field signal of the magnet 11 sensed by any one hall element is small and large, a first voltage data with linear reduction and a second voltage data with linear reduction are generated and obtained in a pre-factory test, and the difference value of the two voltage data at the same moment does not exceed the preset difference range. Similarly, under the deceleration state of the electric vehicle, the rotating handle assembly 1 rotates anticlockwise, the rotating direction of the magnet 11 is opposite to the direction of the first side of the magnet 11 pointing to the second side of the magnet 11, linearly increased first voltage data and linearly increased second voltage data are generated in a test before leaving a factory, and the difference value of the two voltage data at the same moment is not more than the preset difference value range. The upper limit of the preset range of the selectable difference value is the maximum error value of the first voltage data and the second voltage data at the same moment.
If the handle device is interfered or fails, the voltage signal generated by the first Hall element changes suddenly, and/or the voltage signal generated by the second Hall element changes suddenly.
In actual use, the first hall element 21 generates a first voltage signal according to the magnetic field signal of the magnet 11, and the second hall element 22 generates a second voltage signal according to the magnetic field signal of the magnet 11. The signal processing unit calculates that the voltage difference value of the first voltage signal and the second voltage signal at the same time is within a preset difference value range, which indicates that the electric vehicle is not subjected to external interference or faults, and generates a speed change instruction according to the first voltage signal. On the contrary, the electric vehicle can be judged to be interfered or failed externally, the signal processing unit can not produce a speed change instruction, and then the motor does not change the speed and keeps the current speed to run.
In this embodiment, speed regulation is realized by using two hall elements, two hall sensors transmit a voltage signal Ua and Ub respectively, and the two voltage signals are in a certain difference relationship under normal conditions, for example, Ub-Ua is not greater than V0, and when a rotating handle is interfered or works abnormally, the difference between Ua and Ub is too large. In actual work, a motor controller such as an MCU receives Ua and Ub and compares the Ua and the Ub, and if the voltage difference value is less than or equal to V0, the MCU adjusts the speed correspondingly according to the Hall voltage signal of the Ua; when the voltage difference is larger than V0, the MCU judges the handle is faulty and does not perform corresponding action any more. In conclusion, the double-Hall speed regulation can judge whether the handle turning demand signal is reliable or not according to two Hall voltage parameter values, and the mode has stronger anti-interference performance.
Illustratively, on the basis of the above technical solution, as shown in fig. 5, the first hall element 21 and the second hall element 22 may be alternatively disposed at intervals and both located on the first side or the second side of the magnet 11, the second hall element 22 is far away from the magnet 11 relative to the first hall element 21, and the rotation direction of the magnet 11 is the same as or opposite to the direction in which the first side of the magnet 11 points to the second side of the magnet 11. The selectable signal processing unit is used for generating a speed change instruction according to the first voltage signal when detecting that the voltage proportional deviation of the first voltage signal and the second voltage signal is within a deviation preset range.
The first side of the optional magnet 11 is the left end face of the magnet 11, the second side is the right end face of the magnet 11, and the two hall elements are located on the left end face of the magnet 11. The first hall element 21 and the second hall element 22 are arranged at intervals and located on the first side of the magnet 11, and then the linear change rules of the magnetic field signals sensed by the first hall element 21 and the second hall element 22 are consistent but different in size in the normal state. In an initial state, the output voltages of two Hall elements, namely Hall sensors, are respectively detected to determine an initial proportion a, and then two Hall voltage signals are respectively detected in the using process to determine whether the voltage proportion deviation is within a given voltage deviation range (such as +/-b percent).
Under the accelerating state of the electric vehicle, the rotating handle component 1 rotates clockwise, the rotating direction of the magnet 11 is the same as the direction of the first side of the magnet 11 pointing to the second side of the magnet 11, the distances between the two Hall elements and the magnet 11 are increased from small to large, the magnetic field signal of the magnet 11 sensed by any Hall element is decreased from large to small, first voltage data with linear reduction and second voltage data with linear reduction are generated in a test before delivery, and the voltage proportion deviation of the two voltage data at the same moment is not more than a deviation preset range. Similarly, under the deceleration state of the electric vehicle, the rotating handle assembly 1 rotates anticlockwise, the rotating direction of the magnet 11 is opposite to the direction of the first side of the magnet 11 pointing to the second side of the magnet 11, linearly increased first voltage data and linearly increased second voltage data are generated in a test before leaving a factory, and the voltage proportion deviation of the two voltage data at the same moment is not more than the deviation preset range. The selectable deviation preset range is a range formed by a maximum deviation value and a minimum deviation value of the proportion of the first voltage data and the second voltage data at the same time.
If the handle rotating device is interfered or has a fault, the voltage signal generated by the first Hall element changes suddenly, and/or the voltage signal generated by the second Hall element changes suddenly, so that the voltage ratio of the first Hall element and the second Hall element also changes suddenly, and the deviation exceeds the preset deviation range.
In actual use, the first hall element 21 generates a first voltage signal according to the magnetic field signal of the magnet 11, and the second hall element 22 generates a second voltage signal according to the magnetic field signal of the magnet 11. The signal processing unit calculates that the voltage proportional deviation of the first voltage signal and the second voltage signal at the same time is within a deviation preset range, which indicates that the electric vehicle is not subjected to external interference or faults, and at the moment, a speed change instruction is generated according to the first voltage signal. On the contrary, the electric vehicle can be judged to be interfered or failed externally, the signal processing unit can not produce a speed change instruction, and then the motor does not change the speed and keeps the current speed to run.
In this embodiment, speed regulation is realized by using two hall elements, two hall sensors respectively transmit a voltage signal Ua and Ub, and the two voltage signals are in a certain proportional relationship under normal conditions, for example, Ub is approximately equal to 2Ua, and when a rotating handle is interfered or works abnormally, the voltage correlation between Ua and Ub is reduced. In actual work, a motor controller such as an MCU receives Ua and Ub and compares them, and if the voltage ratio is within a preset reference range (e.g., ± 10%), the MCU adjusts the speed accordingly according to the hall voltage signal of Ua, e.g., Ub is 2.05 Ua; when the voltage ratio deviation exceeds a deviation preset range (such as +/-10%), the MCU judges that the handle is in fault and does not perform corresponding action any more, and if Ub is 3.5 Ua. In conclusion, the double-Hall speed regulation can judge whether the handle turning demand signal is reliable or not according to two Hall voltage parameter values, and the mode has stronger anti-interference performance.
Exemplarily, on the basis of the above technical solution, the optional electric vehicle twist grip device shown in fig. 6 further includes: an alarm unit 5; the alarm unit 5 is electrically connected with the motor controller 3, and the motor controller 3 is used for generating a fault alarm signal to enable the alarm unit 5 to carry out handle turning fault alarm when detecting that the first voltage signal and/or the second voltage signal do not meet the preset voltage rule.
In this embodiment, when the motor controller 3 detects that the first voltage signal and/or the second voltage signal do not satisfy the preset voltage rule, it may be determined that the electric vehicle is subjected to an external disturbance or an abnormality such as a fault, and then the motor controller 3 does not generate a speed change instruction, and the motor 4 keeps operating at the current speed. Synchronously, the motor controller 3 generates a fault alarm signal and sends the fault alarm signal to the alarm unit 5, the alarm unit 5 carries out handle turning fault alarm, and the optional alarm unit 5 is a buzzer and/or an indicator lamp, such as a buzzer phoenix alarm or an indicator lamp flashing alarm.
The electric vehicle rotating handle device provided by any embodiment has the advantages of being high in stability and anti-interference performance, the situation that the motor rotates due to standing in place is avoided, and the problem that the speed changes continuously due to the rotation of the motor is also avoided.
It can be understood that the electric vehicle provided by any of the above embodiments can also be an electric vehicle, the rotating handle device can be regarded as an accelerator control structure of the electric vehicle, double hall sensors are adopted, the two hall sensors detect the rotation angle change of the magnetic field simultaneously, and the output hall voltage signals form two paths of pedal position voltage signals after being amplified, filtered, translated, limited and the like by the signal processing circuit. The electronic control unit ECU of the electric automobile can judge whether the pedal position sensor works normally by comparing the correlation of the two paths of pedal position voltage signals. The accuracy of voltage signal is improved, and variable speed control is more accurate, and the interference killing feature is stronger.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. An electric vehicle handle device, comprising: the device comprises a rotating assembly, a fixing assembly and a motor controller;
a magnet is arranged on the rotating component;
the fixed assembly is provided with a first Hall element and a second Hall element, the rotating assembly is nested in the fixed assembly and rotates relative to the fixed assembly, so that the magnet moves relative to the first Hall element and the second Hall element, the first Hall element induces the magnetic field signal of the magnet to generate a first voltage signal, and the second Hall element induces the magnetic field signal of the magnet to generate a second voltage signal;
the motor controller is used for adjusting the rotating speed of the motor according to the first voltage signal or the second voltage signal when detecting that the first voltage signal and the second voltage signal meet a preset voltage rule.
2. The twist grip device for electric vehicles according to claim 1, wherein the hall element comprises a positive electrode connected to the positive electrode lead, a negative electrode connected to the negative electrode lead, and a signal terminal connected to the signal transmission line;
the motor controller comprises a power supply unit, a signal processing unit and a motor driving unit, wherein the power supply unit supplies power to the Hall element through the positive lead and the negative lead, the signal processing unit respectively acquires the first voltage signal and the second voltage signal through two signal transmission lines, a speed change instruction is generated when the two voltage signals are detected to meet a preset voltage rule, and the motor driving unit adjusts the rotating speed according to the speed change instruction.
3. The handle apparatus of the electric vehicle as claimed in claim 2, wherein the first hall element and the second hall element are disposed adjacent to each other at a first side or a second side of the magnet, and the magnet is rotated in a direction the same as or opposite to a direction in which the first side of the magnet is directed to the second side of the magnet.
4. The electric vehicle handle transferring device of claim 3, wherein the signal processing unit is configured to generate the gear shifting command according to the first voltage signal when detecting that a voltage difference value between the first voltage signal and the second voltage signal is within a preset difference range.
5. The electric vehicle twist grip apparatus according to claim 2, wherein said first hall element is located on a first side of said magnet and said second hall element is located on a second side of said magnet, said magnet being rotated in the same direction or in an opposite direction to the direction in which said first side of said magnet is directed toward said second side of said magnet.
6. The electric vehicle handle transferring device according to claim 5, wherein the signal processing unit is configured to generate the speed change command according to the first voltage signal when detecting that both the voltage change rate of the first voltage signal and the voltage change rate of the second voltage signal satisfy a second voltage preset rule.
7. The handle rotating device for the electric vehicle as claimed in claim 2, wherein the first hall element and the second hall element are spaced apart and located on a first side or a second side of the magnet, the second hall element is away from the magnet relative to the first hall element, and the magnet rotates in the same direction or in an opposite direction to the direction in which the first side of the magnet points to the second side of the magnet.
8. The electric vehicle handle rotating device according to claim 7, wherein the signal processing unit is configured to generate the gear shift command according to the first voltage signal when detecting that a voltage proportional deviation between the first voltage signal and the second voltage signal is within a deviation preset range.
9. The twist grip apparatus for electric vehicles according to claim 1, further comprising: an alarm unit;
the alarm unit is electrically connected with the motor controller, and the motor controller is used for generating a fault alarm signal to enable the alarm unit to carry out handle turning fault alarm when detecting that the first voltage signal and/or the second voltage signal do not meet the preset voltage rule.
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| CN202010707318.9A CN111731428A (en) | 2020-07-21 | 2020-07-21 | Electric vehicle rotating handle device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010707318.9A CN111731428A (en) | 2020-07-21 | 2020-07-21 | Electric vehicle rotating handle device |
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| CN111731428A true CN111731428A (en) | 2020-10-02 |
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