Deviation support induction control system for two-wheeled electric vehicle
The eccentricity sensing control system, which combines reed switches and magnets, overcomes the shortcomings of Hall sensors and mechanical switches, achieving stable and reliable control of the eccentricity of electric vehicles, reducing costs and power consumption, and improving the system's durability and safety.
Patent Information
- Application Number
- CN202423004816.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-06
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-06
AI Technical Summary
Existing electric vehicle eccentricity sensing systems suffer from problems such as Hall sensors being highly susceptible to temperature variations, high power consumption, high cost, and mechanical switches having short lifespans and being prone to wear.
It adopts a combination of reed switches and magnets, and uses the change in magnetic field of the reed switch when the side support is lowered and raised to realize the signal conduction and disconnection. Only two wires are needed for connection. Combined with Bluetooth module and microcontroller, it can be used for vehicle owner identification and control.
It achieves the following: no external power supply required, simple wiring, low cost, unaffected by temperature and voltage interference, stable performance, avoids mechanical wear, and is easy to promote.
Smart Images
Figure CN223672676U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to electric motor car technical field especially is involved in a kind of bias support inductive control system for two-wheeled electric motor car. BACKGROUND
[0002] With the development of intelligent technology and the demand of people for convenient travel and safe riding, the Bluetooth connection of smart phone is used in two-wheeled electric motor car to solve the keyless travel of user. Bias support is a necessary component of electric motor car, and the user opens the bias support during the riding process. In order to make the user's control simpler, the opening and lifting of bias support are recognized by induction to realize the start and shutdown of vehicle, and ensure the safety of parking state and prevent the phenomenon of turning handlebar and flying.
[0003] There are two forms of conventional realization of the function of bias support induction of existing electric motor car, one of which is the form of combination of Hall sensor and magnetic steel, connecting three wires, one of which is 5V power supply, one is ground, and the other is signal output pin. When the magnetic steel is close, the signal pin level of Hall changes, and the signal is read by controller and instrument.
[0004] However, the Hall sensor is greatly affected by temperature, and high or low temperature may cause inaccurate parameters. The Hall sensor needs three wires to realize, and the wire harness is multiple and the power consumption is large. The signal processing of receiving circuit is complex, and needs pull-up resistor and filter. The Hall sensor is easily disturbed by voltage peak, and the probability of breakdown is high, and the stability is poor. At the same time, the device, signal processing and wire harness are used more, and the cost is high.
[0005] Another one is the form of mechanical switch, two wires, one wire for signal acquisition, and the other for ground. When the bias support rotates, the switch button is stressed, and the contact is contacted.
[0006] However, the mechanical switch is worn in use, and has short service life. The protection requirement is high, and is afraid of water and silt, needs sealing ring and lubricating grease, and the cost is high. Moreover, the mechanical switch is easy to freeze the external contact function in winter. SUMMARY
[0007] Therefore, the utility model aims at overcoming the defects in the prior art, and provides a bias support inductive control system for two-wheeled electric motor car without external power supply and with stable performance.
[0008] To achieve the above purpose, the technical scheme of the utility model is as follows:
[0009] A kind of bias support induction control system for two-wheel electric vehicle, including bias support device, the bias support device includes upper cover, lower cover, bias support and base, the upper cover is fixed on the base, the bias support is fixed on the lower cover, the upper cover and the lower cover are rotationally connected;The upper cover and the lower cover are equipped with reed switch and magnetic steel respectively in;When the bias support is put down, the reed switch and the magnetic steel are close to each other, the magnetic reed piece in the reed switch is contacted and conducted;When the bias support is lifted, the reed switch and the magnetic steel are apart, the magnetic reed piece in the reed switch is disconnected;
[0010] The control system further includes bias support induction circuit, the bias support induction circuit includes: single-chip microcomputer U1, the 7th pin of the single-chip microcomputer U1 is connected with one end of the reed switch, the other end of the reed switch is grounded;Triode Q2, the base electrode of the triode Q2 is connected with the 3rd pin of the single-chip microcomputer U1, the emitter electrode of the triode Q2 is grounded;MOS tube Q1, the MOS tube Q1 is connected on the power supply circuit of electric vehicle by its source electrode and drain electrode, the gate electrode of the MOS tube Q1 is connected with the collector electrode of the triode by voltage dividing resistor R4, and is connected with power supply circuit by voltage dividing resistor R3.
[0011] Further, the bias support induction control system for two-wheel electric vehicle further includes owner identity confirmation device, the single-chip microcomputer U1 is connected with the owner identity confirmation device, and can start continuous judgment whether the 7th pin level of single-chip microcomputer U1 changes when the owner identity confirmation device confirms the owner identity.
[0012] Further, the owner identity confirmation device includes Bluetooth module, the Bluetooth module is connected with the 5th pin of the single-chip microcomputer U1, and the user carries terminal equipment matched with the Bluetooth module.
[0013] Further, the MOS tube Q1 is connected with key socket in parallel, and the source electrode and drain electrode of the MOS tube Q1 are connected with two ends of the key socket respectively.
[0014] Further, the bias support induction control system for two-wheel electric vehicle further includes single-chip microcomputer U2, the 3rd pin of the single-chip microcomputer U2 is connected with the 7th pin of the single-chip microcomputer U1, the 7th pin of the single-chip microcomputer U2 is connected with steering switch, and the 5th pin of the single-chip microcomputer U2 is connected with brake switch.
[0015] Further, the bias support induction control system for the two-wheeled electric vehicle further comprises a first auxiliary power supply for supplying power to the single-chip microcomputer; the first auxiliary power supply comprises a conversion module U3 and a conversion module U5, the first pin of the conversion module U3 is connected with the power supply circuit of the electric vehicle, and the second pin is connected with the third pin of the conversion module U5; the third pin of the conversion module U5 is grounded through a capacitor C1, and the positive pole of the capacitor C1 is connected with the single-chip microcomputer; the first pin of the conversion module U5 is grounded through a capacitor C3, and the positive pole of the capacitor C3 is connected with the single-chip microcomputer.
[0016] Further, the bias support induction control system for the two-wheeled electric vehicle further comprises a second auxiliary power supply for supplying power to the single-chip microcomputer; the second auxiliary power supply comprises a conversion module U4 and a conversion module U6, the first pin of the conversion module U4 is connected with the power supply circuit of the electric vehicle, and the second pin is connected with the third pin of the conversion module U6; the third pin of the conversion module U6 is grounded through a capacitor C1; the first pin of the conversion module U6 is grounded through a capacitor C4, and the positive pole of the capacitor C3 is connected with the single-chip microcomputer.
[0017] Compared with the prior art, the bias support induction control system for the two-wheeled electric vehicle has the following beneficial effects:
[0018] The bias support induction control system for the two-wheeled electric vehicle provided by the utility model adopts the form that the dry reed tube technology is combined with the magnetic steel, when there is no external magnetic field, the two reeds do not contact due to the interval of only several microns, and the dry reed tube is in the off state. When the bias support is rotated and approaches with the magnetic steel, the magnetic field generates different polarities near the reed end point position, the reeds are magnetized, and the two reeds attract and conduct the circuit. When the bias support is lifted, the external magnetic field is far away, the reeds gradually demagnetize, the contact points are separated due to the elastic force of the reeds, and the circuit is disconnected. Therefore, the signal change function of the bias support power-off is realized.
[0019] Therefore, the bias support induction control system for the two-wheeled electric vehicle does not need external separate power supply, only needs two lines to be connected, one is connected with the signal acquisition, and the other is grounded, is installed on the bias support, and the signal is short-circuited and disconnected with the bias support being put down and lifted, and the system circuit is simple. Moreover, there is no mechanical switch, mechanical wear is avoided, sealing treatment of the mechanical structure and use of lubricating grease are not needed, and the cost is low. Meanwhile, the device is not affected by temperature and voltage interference, is stable and reliable in performance, and is easy to be popularized in large quantities. BRIEF DESCRIPTION OF DRAWINGS
[0020] The drawings constituting a part of the utility model are used to provide further understanding of the utility model, the illustrative embodiment of the utility model and the explanation thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. In the drawings:
[0021] Figure 1The utility model relates to an explosion structural schematic diagram for the bias support induction control system of two -wheeled electric vehicle.
[0022] Figure 2 The utility model relates to a circuit diagram for the bias support induction control system of two -wheeled electric vehicle.
[0023] Mark explanation:
[0024] 1 - upper cover, 2 - dry spring pipe, 3 - lower cover, 4 - magnetic steel, 5 - screw, 6 - bias support, 7 - base. Specific embodiments
[0025] It should be explained that the embodiment in the utility model and the feature in the embodiment can be combined mutually in the case of no conflict.
[0026] In the description of the utility model, it should be understood that the orientation or position relation indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.
[0027] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.
[0028] The utility model will be described in detail below with reference to the drawings and in combination with embodiments:
[0029] As Figure 1 And Figure 2 As shown in the utility model provides a kind of bias support induction control system for two -wheeled electric vehicle, the system includes bias support device and bias support induction circuit, wherein:
[0030] The biasing device comprises an upper cover 1, a lower cover 3, a biasing 6 and a base 7, the upper cover 1 is fixed on the base 7 by screws 5, the base 7 is fixed on the vehicle body, the biasing 6 is fixed on the lower cover 3, and the upper cover 1 and the lower cover 3 are rotationally connected; a reed tube 2 and a magnetic steel 4 are respectively fixed in the upper cover 1 and the lower cover 3, and the biasing device is configured such that when the biasing 6 is lowered, the reed tube 2 and the magnetic steel 4 are close to each other, the magnetic reed in the reed tube 2 is in contact and conduction; when the biasing 6 is lifted, the reed tube 2 and the magnetic steel 4 are apart, and the magnetic reed in the reed tube 2 is disconnected.
[0031] The connection mode of the upper cover and the lower cover is not limited in the embodiment, and the rotation connection of the two can be realized by using the prior art. For example, as shown in FIG. 1, Figure 1 the lower cover can be arranged in a circular cavity of the upper cover, the shape of the lower cover is matched with the circular cavity, the outer wall of the lower cover is in sliding connection with the circular cavity, and the specific position of the lower cover is limited by the circular cavity. In other embodiments, the rotation connection of the two can also be realized by a rotating shaft or a bolt penetrating through the two.
[0032] The biasing induction circuit comprises a single-chip microcomputer U1, one end of the reed tube 2 is connected to the 7th pin of the single-chip microcomputer U1, and the other end of the reed tube 2 is grounded; a triode Q2, the base of the triode Q2 is connected to the 3rd pin of the single-chip microcomputer U1, and the emitter of the triode Q2 is grounded; a MOS tube Q1, the source and the drain of the MOS tube Q1 are connected to the power supply circuit of the electric vehicle, the gate of the MOS tube Q1 is connected to the collector of the triode through a voltage dividing resistor R4, and the gate of the MOS tube Q1 is connected to the power supply circuit through a voltage dividing resistor R3.
[0033] The biasing induction control system for the two-wheeled electric vehicle provided in the embodiment adopts the form of combination of the reed tube technology and the magnetic steel, when there is no external magnetic field, the two reeds do not contact due to the interval of only several microns, and the reed tube is in the disconnected state. When the biasing is lowered and rotates close to the magnetic steel, the magnetic field generates different polarities near the end point positions of the reeds, the reeds are magnetized, and the two reeds attract and conduct the circuit. When the biasing is lifted, the external magnetic field is far away, the reeds gradually demagnetize, the contact points are separated due to the elastic force of the reeds, and the circuit is disconnected. Thus, the signal change function of the biasing power-off is realized.
[0034] Therefore, the biasing induction control system for the two-wheeled electric vehicle does not need external separate power supply, only needs two lines, one for signal collection and one for grounding, and is installed on the biasing. With the lowering and lifting of the biasing, the signal is short-circuited and disconnected, and the system circuit is simple. There is no mechanical switch, no mechanical wear, no sealing treatment of mechanical structure and no use of lubricating grease, and the cost is low. At the same time, the device is not affected by temperature and voltage interference, has stable and reliable performance, and is easy to be widely promoted.
[0035] In some embodiments, the bias support induction control system for the two-wheeled electric vehicle further comprises a vehicle owner identity confirmation device, and the single-chip microcomputer U1 is connected with the vehicle owner identity confirmation device, and can start continuous judgment on whether the 7-pin level of the single-chip microcomputer U1 changes when the vehicle owner identity confirmation device confirms the identity of the vehicle owner.
[0036] The embodiment provides a specific structure of the vehicle owner identity confirmation device, which comprises a Bluetooth module, the Bluetooth module is connected with the 5th pin of the single-chip microcomputer U1, and a terminal device matched with the Bluetooth module is carried by a user. When a person carrying a Bluetooth-paired mobile phone approaches the vehicle, the instrument-end Bluetooth module senses the signal strength of the paired mobile phone within the distance range, considers that the condition for starting the vehicle is met, and the single-chip microcomputer U1 starts continuous judgment on whether the 7-pin level of the single-chip microcomputer U1 changes, so as to avoid that the non-electric vehicle owner starts the electric vehicle. Of course, in other embodiments, the vehicle owner identity confirmation device can also be designed in other forms, such as confirming the identity of the vehicle owner by scanning a code through a mobile phone APP.
[0037] In some embodiments, the MOS tube Q1 is connected with a key socket in parallel, and the source and the drain of the MOS tube Q1 are respectively connected with two ends of the key socket. When the user starts the vehicle by using the key, that is, the MOS tube Q2 is directly turned on through the key KEY2, the ACC normally supplies 48V power for the controller and other components. It is worth noting that the vehicle owner identity confirmation device is not required to confirm the identity of the vehicle owner when the electric vehicle is started by using the key.
[0038] In some embodiments, the bias support induction control system for the two-wheeled electric vehicle further comprises a single-chip microcomputer U2, the 3rd pin of the single-chip microcomputer U2 is connected with the 7th pin of the single-chip microcomputer U1, the 7th pin of the single-chip microcomputer U2 is connected with a handlebar switch, and the 5th pin of the single-chip microcomputer U2 is connected with a brake switch. The 3rd pin of the controller single-chip microcomputer U2 continuously judges the change of the 3rd pin level of U2. When the side support is vertically pressed down, the reed tube is turned on, the 3rd pin level is pulled to the ground, the 7th pin level of U1 is low, and it is judged that the side support is not pressed up. At this time, if the user twists the handlebar, the controller does not drive the motor to rotate for safety consideration to prevent the vehicle from flying.
[0039] In some embodiments, the bias support induction control system for the two-wheeled electric vehicle further comprises a first auxiliary power supply and a second auxiliary power supply for supplying power to the single-chip microcomputer; wherein the first auxiliary power supply comprises a conversion module U3 and a conversion module U5, the 1st pin of the conversion module U3 is connected with a power supply circuit of the electric vehicle, and the 2nd pin is connected with the 3rd pin of the conversion module U5; the 3rd pin of the conversion module U5 is grounded through a capacitor C1, and the positive electrode of the capacitor C1 is connected with the single-chip microcomputer; the 1st pin of the conversion module U5 is grounded through a capacitor C3, and the positive electrode of the capacitor C3 is connected with the single-chip microcomputer.
[0040] The second auxiliary power supply includes conversion module U4 and conversion module U6, the first pin of conversion module U4 is connected with the power supply circuit of the electric vehicle, the second pin is connected with the third pin of conversion module U6; the third pin of conversion module U6 is grounded through capacitor C1; the first pin of conversion module U6 is grounded through capacitor C4, and the positive pole of capacitor C3 is connected with the single-chip microcomputer.
[0041] The specific device function is realized as follows:
[0042] 1. The instrument is directly connected with the battery 48V, and the working state is continuous, U3 conversion module and U5 constitute the auxiliary power supply of the instrument, 5V and 3.3V required for chip power supply are provided, and capacitors C1 and C3 have filtering functions.
[0043] 2. When the vehicle is shut down and parked, the bias support is in the state of being punched into the vertical ground, the magnetic steel rotates with the bias support, and is close to the reed switch KR1, the reed switch contact is conducted to ground, and the 7th pin of the instrument single-chip microcomputer U1 is pulled low and keeps low level. R1 is a pull-up resistor connected with 5V, and the level signal enters the 7th pin of the single-chip microcomputer through R2.
[0044] 3. When someone carries a paired Bluetooth mobile phone and approaches the vehicle, the instrument end Bluetooth module senses that the signal strength of the paired mobile phone is within the distance range, considers that the condition of starting the vehicle is met, and starts to continuously judge whether the level of the 7th pin of the single-chip microcomputer U1 changes.
[0045] 4. In the Bluetooth close range, when the vehicle support is kicked up to the horizontal position, the magnetic steel leaves the reed switch, the reed switch is separated from the magnetic field, the contact is disconnected and separated from the ground, the 7th pin of the single-chip microcomputer U1 detects the high level and prepares to start the vehicle. The 3rd pin of the single-chip microcomputer U1 outputs a high level, turns on the triode Q2, divides the voltage through R3 and R4, meets the conduction condition of the MOS tube Q1, the ACC lock end is raised from 0V to 48V voltage, and supplies power to the controller and other components. Conversion modules U4 and U6 are auxiliary power supplies of the controller, the controller auxiliary power supply works normally, outputs 3.3V, and supplies power to the single-chip microcomputer. The handle signal is transmitted to the controller, and the vehicle enters the riding state.
[0046] 5. When the riding is finished, the vehicle is parked, and the vehicle support is punched into the vertical ground again, the magnetic steel rotates with the vehicle support, is close to the reed switch, the reed switch is affected by the magnetic field, the contact is conducted to ground, the 7th pin of the instrument detects the level from the high level to the low level state, meets the shutdown condition, and after 3 seconds of countdown, the 3rd pin of U1 closes the high level output, the triode Q2 is cut off, the MOS tube Q1 is closed, the ACC lock end is powered off, and the whole vehicle is shut down.
[0047] 6. When the user starts the engine with the key, that is, directly across the MOS tube Q2 conduction by the key KEY2, the lock ACC normal power supply 48V, power supply for the controller and other components. The 3-pin of the controller single-chip microcomputer U2 continuously judges the level change. When the side support is vertically knocked down, the reed tube is turned on, the 3-pin level is pulled low to the ground, and it is judged that the side support is not raised. At this time, if the user turns the handlebar, in order to consider safety to prevent the car from flying, the controller does not drive the motor to rotate. When the user raises the side support horizontally, the reed tube is disconnected from the magnetic steel contact, the 3-pin level of U3 becomes high, and the controller judges that it is a rideable state. In this case, turning the handlebar can ride normally, and the brake switch signal is received during riding to disconnect the power drive.
[0048] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A biasing induction control system for a two-wheeled electric vehicle, characterized by: The biasing device comprises an upper cover (1), a lower cover (3), a biasing device (6) and a base (7), the upper cover (1) is fixed on the base (7), the biasing device (6) is fixed on the lower cover (3), and the upper cover (1) and the lower cover (3) are rotationally connected; a dry reed (2) and a magnetic steel (4) are respectively arranged in the upper cover (1) and the lower cover (3), and the biasing device is configured such that when the biasing device (6) is lowered, the dry reed (2) and the magnetic steel (4) are close to each other, and a magnetic reed in the dry reed (2) is in contact and conducted; when the biasing device (6) is lifted, the dry reed (2) and the magnetic steel (4) are separated, and the magnetic reed in the dry reed (2) is disconnected. The control system further comprises a biasing sensing circuit, the biasing sensing circuit comprises: a single-chip microcomputer U1, a seventh pin of the single-chip microcomputer U1 is connected with one end of the dry reed (2), and the other end of the dry reed is grounded; a triode Q2, a base of the triode Q2 is connected with a third pin of the single-chip microcomputer U1, and an emitter of the triode Q2 is grounded; a MOS tube Q1, the MOS tube Q1 is connected with a power supply circuit of the electric vehicle through a source and a drain thereof, a gate of the MOS tube Q1 is connected with a collector of the triode through a voltage dividing resistor R4, and the MOS tube Q1 is connected with the power supply circuit through a voltage dividing resistor R3.
2. A biasing inductive control system for a two-wheeled electric vehicle as claimed in claim 1, wherein: Further comprising a vehicle owner identity confirming device, the single-chip microcomputer U1 is connected with the vehicle owner identity confirming device, and can start continuous judgment on whether the level of the seventh pin of the single-chip microcomputer U1 changes when the vehicle owner identity confirming device confirms the identity of the vehicle owner.
3. A biasing inductive control system for a two-wheeled electric vehicle as claimed in claim 2, wherein: The vehicle owner identity confirming device comprises a Bluetooth module, the Bluetooth module is connected with a fifth pin of the single-chip microcomputer U1, and a terminal device matched with the Bluetooth module is carried by a user.
4. A biasing inductive control system for a two-wheeled electric vehicle as claimed in claim 1, wherein: The MOS tube Q1 is connected with a key socket in parallel, and the source and the drain of the MOS tube Q1 are respectively connected with two ends of the key socket.
5. A biasing inductive control system for a two-wheeled electric vehicle as claimed in claim 1, wherein: Further comprising a single-chip microcomputer U2, a third pin of the single-chip microcomputer U2 is connected with a seventh pin of the single-chip microcomputer U1, a seventh pin of the single-chip microcomputer U2 is connected with a handle switch, and a fifth pin of the single-chip microcomputer U2 is connected with a brake switch.
6. A biasing inductive control system for a two-wheeled electric vehicle as claimed in claim 1, wherein: Further comprising a first auxiliary power supply for supplying power to the single-chip microcomputer; the first auxiliary power supply comprises conversion modules U3 and U5, a first pin of the conversion module U3 is connected with a power supply circuit of the electric vehicle, a second pin of the conversion module U3 is connected with a third pin of the conversion module U5; the third pin of the conversion module U5 is grounded through a capacitor C1, and a positive electrode of the capacitor C1 is connected with the single-chip microcomputer; a first pin of the conversion module U5 is grounded through a capacitor C3, and a positive electrode of the capacitor C3 is connected with the single-chip microcomputer.
7. A biasing induction control system for a two-wheeled electric vehicle as defined in claim 1, wherein: It also includes a second auxiliary power supply for the single-chip microcomputer; the second auxiliary power supply includes conversion module U4 and conversion module U6, the first pin of the conversion module U4 is connected with the power supply circuit of the electric vehicle, the second pin is connected with the third pin of the conversion module U6; the third pin of the conversion module U6 is grounded through the capacitor C1; the first pin of the conversion module U6 is grounded through the capacitor C4, and the positive electrode of the capacitor C3 is connected with the single-chip microcomputer.