CN210612782U - Resistance generating device and exercise bicycle - Google Patents
Resistance generating device and exercise bicycle Download PDFInfo
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- CN210612782U CN210612782U CN201921144358.6U CN201921144358U CN210612782U CN 210612782 U CN210612782 U CN 210612782U CN 201921144358 U CN201921144358 U CN 201921144358U CN 210612782 U CN210612782 U CN 210612782U
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Abstract
The utility model relates to the technical field of fitness equipment. The utility model discloses a resistance generating device and exercise bicycle, wherein, resistance generating device includes power supply circuit, first switch circuit, second switch circuit, the power consumption unit, motor control panel, motor drive circuit and PMSM, power supply circuit is the power supply of whole resistance generating device, a power supply circuit's output is through the direct current input of first switch circuit motor drive circuit, motor drive circuit's AC output termination PMSM's input, motor drive circuit's direct current output end connects the power consumption unit through second switch circuit, first switch circuit, second switch circuit and motor drive circuit's control end is connected with motor control panel's control output end respectively. The utility model discloses both can provide the resistance and take exercise, can provide power help user's motion again and resume, the function is various, improves user experience, and simple structure, and is with low costs.
Description
Technical Field
The utility model belongs to the technical field of body-building apparatus, specifically relate to a resistance generating device and exercise bicycle.
Background
With the development of society and the improvement of living standard, people have stronger health consciousness, and more people like to use fitness equipment for fitness. The exercise bicycle belongs to typical aerobic exercise equipment simulating outdoor exercises, is also called as cardiopulmonary training equipment, and is mainly used for promoting cardiovascular exercise, accelerating metabolism, and enhancing the functions of the heart and the lung through exercise with proper strength for a long time, so that the physique of a human body is improved. Exercise bicycles are becoming a very popular form of exercise in health clubs, community activity centers, and are increasingly entering the home of common people.
The resistance generating device of the existing exercise bicycle is generally divided into two types, namely magnetic control resistance and frictional resistance, the function of the resistance generating device is single, only single resistance can be provided, power cannot be provided, and after a person rides and moves with certain strength, muscles can be stiff, at the moment, if power (external force) can be provided to drive limbs to continuously move, the muscles can be relaxed, blood can circulate, and the body recovery is promoted.
Disclosure of Invention
An object of the utility model is to provide a resistance generating device and exercise bicycle are used for solving the technical problem that above-mentioned exists.
In order to achieve the above object, the utility model adopts the following technical scheme: a resistance generating device comprises a power supply circuit, a first switch circuit, a second switch circuit, an electric energy consumption unit, a motor control panel, a motor driving circuit and a permanent magnet synchronous motor, the power supply circuit supplies power to the whole resistance generating device, one output end of the power supply circuit is connected with the direct current input end of the motor driving circuit through the first switch circuit, the alternating current output end of the motor driving circuit is connected with the input end of the permanent magnet synchronous motor, the direct current output end of the motor driving circuit is connected with the electric energy consumption unit through the second switch circuit, the control ends of the first switch circuit, the second switch circuit and the motor drive circuit are respectively connected with the control output end of the motor control board, when the motor is in a power mode, the motor control board controls the first switching circuit to be switched on, the second switching circuit to be switched off, and controls the motor driving circuit to drive the permanent magnet synchronous motor to correspondingly rotate; when the motor is in the resistance mode, the motor control board controls the second switch circuit to be switched on, the first switch circuit is switched off, and the motor driving circuit controls the permanent magnet synchronous motor to output corresponding resistance.
Further, the electric energy consumption unit is a power resistor.
Further, the motor control board comprises a main control unit, a bus voltage measuring circuit, a current measuring circuit and a motor rotating speed measuring circuit, wherein the bus voltage measuring circuit is used for measuring the voltage of a direct current bus and outputting the voltage to the main control unit, the current measuring circuit and the motor rotating speed measuring circuit are respectively used for measuring the phase current and the rotating speed of the permanent magnet synchronous motor and outputting the phase current and the rotating speed to the main control unit, and the main control unit performs corresponding FOC closed-loop control according to the voltage of the direct current bus, the phase current and the rotating speed of the permanent magnet synchronous motor.
Further, the motor driving circuit is realized by adopting a half-bridge driver and power.
Furthermore, the first switch circuit and the second switch circuit are switched on and off by adopting power MOS tubes, and are controlled by PWM signals output by the motor control panel.
Furthermore, the power supply circuit comprises an AC/DC circuit, a voltage stabilizing circuit and a voltage reducing circuit, wherein the input end of the AC/DC circuit is connected with an alternating current input, the output end of the AC/DC circuit is connected with the direct current input end of the motor driving circuit through the first switch circuit, and other electronic devices of the resistance generating device are supplied with power through the voltage stabilizing circuit and the voltage reducing circuit.
Further, the motor control system comprises a meter which is in communication connection with the motor control board.
Furthermore, the permanent magnet synchronous motor is in a hub shape and is nested on an annular balancing weight.
The utility model also provides an exercise bicycle, be equipped with foretell resistance generating device.
The utility model has the advantages of:
the utility model discloses a resistance generating device both can provide the resistance and take exercise, can provide power again and help user's motion to resume, and the function is various, improves user experience, and adopts same device to realize providing of resistance and power, has effectively reduced the complexity and the manufacturing cost of exercise bicycle structure, provides more spaces for the design of exercise bicycle.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a circuit block diagram of a resistance generating device according to an embodiment of the present invention;
fig. 2 is a partial detailed circuit diagram of a resistance generating device according to an embodiment of the present invention;
FIG. 3 is another specific circuit diagram of a resistance generating device according to an embodiment of the present invention;
fig. 4 is a schematic structural view of the exercise bicycle according to the embodiment of the present invention.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The present invention will now be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1-3, a resistance generating device comprises a power circuit 1, a first switch circuit 2, a second switch circuit 3, an electric energy consumption unit 7, a motor control board, a motor driving circuit 4 and a permanent magnet synchronous motor 5, wherein the power circuit 1 supplies power to the whole resistance generating device, one output end of the power circuit 1 is connected with a direct current input end of the motor driving circuit 4 through the first switch circuit 2, an alternating current output end of the motor driving circuit 4 is connected with an input end of the permanent magnet synchronous motor 5, a direct current output end (which is the same port as the direct current input end) of the motor driving circuit 4 is connected with the electric energy consumption unit 7 through the second switch circuit 3, control ends of the first switch circuit 2, the second switch circuit 3 and the motor driving circuit 4 are respectively connected with a control output end of the motor control board, when the resistance generating device is in a power mode (i.e. a recovery mode), the motor control board controls the first switch circuit 2 to be switched on, the second switch circuit 3 to be switched off, the power supply circuit 1 supplies power to the motor drive circuit 4, and the motor control board controls the motor drive circuit 4 to drive the permanent magnet synchronous motor 5 to rotate correspondingly, namely, the permanent magnet synchronous motor rotates according to the set rotating speed to provide power; when the electric vehicle is in a resistance mode (i.e., an exercise mode), the motor control board controls the second switch circuit 3 to be turned on, the first switch circuit 2 is turned off, and the motor driving circuit 4 controls the permanent magnet synchronous motor 5 to output corresponding resistance (torque), i.e., to output a set resistance, and the electric energy generated when the user drives the permanent magnet synchronous motor 5 to rotate under the set resistance is converted into direct current through the motor driving circuit 4 and is output to the electric energy consumption unit 7 through the second switch circuit 3 to be dissipated.
In this embodiment, the power consumption unit 7 is preferably a power resistor, which is easy to implement and low in cost, but not limited thereto, and in other embodiments, other devices capable of consuming electric energy may be used.
In this embodiment, the motor control board controls the permanent magnet synchronous motor 5 by using the FOC (field oriented control), which is a mature technology, and reference may be made to the prior art, which is not described in detail.
Correspondingly, in this embodiment, the motor control board includes a main control unit 6, a bus voltage measuring circuit 10, a current measuring circuit 8 and a motor speed measuring circuit 9, where the bus voltage measuring circuit 10 is configured to measure a voltage of a dc bus (connected to a dc input terminal of the motor driving circuit 4) and output the voltage to the main control unit 6, the current measuring circuit 8 and the motor speed measuring circuit 9 are respectively configured to measure a phase current and a speed of the permanent magnet synchronous motor 5 and output the phase current and the speed to the main control unit 6, and the main control unit 6 performs corresponding FOC closed-loop control according to the voltage of the dc bus, the phase current and the speed of the permanent magnet synchronous motor 5.
In this embodiment, the motor rotation speed measuring circuit 9 is implemented by using a hall sensor, has high accuracy, and is easy to implement, but not limited thereto.
In this embodiment, specific circuit connection relationships among the bus voltage measuring circuit 10, the current measuring circuit 8 and the motor speed measuring circuit 9 are shown in fig. 2 and 3 in detail, which is not described in detail, and of course, in other embodiments, the bus voltage measuring circuit 10, the current measuring circuit 8 and the motor speed measuring circuit 9 may also be implemented by using other existing circuit forms, which can be easily implemented by those skilled in the art and is not described in detail.
In this specific embodiment, the main control unit 6 is implemented by using a single chip microcomputer U2 of the model STM32F105RBT6, and a specific circuit is shown in fig. 3 in detail, which is not described in detail, but of course, in other embodiments, the main control unit 6 may also be implemented by using other single chip microcomputers.
In this embodiment, the motor driving circuit 4 is implemented by using half-bridge drivers U8, U9 and U10 and power MOS transistors MOS1-MOS12, the half-bridge drivers U8, U9 and U10 are of the type IR2181S, and the specific circuit connection relationship is detailed in fig. 2 and will not be described in detail. The motor driving circuit has high control precision, high real-time performance and high reliability, but is not limited thereto, and in other embodiments, the motor driving circuit 4 may also be implemented by other existing motor driving circuits, which can be easily implemented by those skilled in the art and is not described in detail.
In this embodiment, the first switch circuit 2 and the second switch circuit 3 both use power MOS transistors for switching on and off, and are controlled by the PWM signals output by the motor control board, so that the sensitivity and reliability are high, and the specific circuit is shown in fig. 3, which is not described in detail. Of course, in other embodiments, the first switch circuit 2 and the second switch circuit 3 may be implemented by using other switch circuits.
In this embodiment, the power circuit 1 includes an AC/DC circuit, a voltage stabilizing circuit, and a voltage reducing circuit, wherein an input terminal of the AC/DC circuit is connected to an AC input (i.e., a commercial power), an output terminal of the AC/DC circuit is connected to a DC input terminal of the motor driving circuit 4 through the first switch circuit 2, and the voltage stabilizing circuit and the voltage reducing circuit supply power to other electronic devices of the resistance generating device.
In this embodiment, the AC/DC circuit is implemented by an offline converter U4 of type VIPER26, which has high safety and reliability and low power consumption, and the specific circuit is shown in fig. 3, which is not described in detail. Of course, in other embodiments, the AC/DC circuit may be implemented using other AC/DC circuits known in the art.
In this embodiment, the voltage-reducing circuit includes a 5V voltage-reducing circuit and a 3.3V voltage-reducing circuit, and supplies power to each electronic device of the resistance generating device, and the specific circuits of the voltage-stabilizing circuit and the voltage-reducing circuit are shown in fig. 3 in detail, but are not limited thereto.
In this specific embodiment, including instrument 11, instrument 11 and motor control panel communication connection, it is specific, instrument 11 and main control unit 6 communication connection, the general wired interface of accessible, if: UART, CAN, 485, etc. are connected, and of course, wireless communication connection, such as Bluetooth, WIFI, etc. CAN also be adopted.
The instrument 11 is provided with a display screen and keys, and a user can select an exercise mode, resistance magnitude, rotating speed and the like through the instrument 11.
In this embodiment, the permanent magnet synchronous motor 5 is in a hub shape and is nested on an annular counterweight, i.e. an inertia wheel, to provide resistance or power.
The working process is as follows:
an exercise mode: the user selects an exercise mode on the instrument 11, resistance is set, the instrument 11 converts the exercise mode into a resistance control instruction and sends the resistance control instruction to the motor control board; the motor control board controls the first switch circuit 2 to be switched off, and controls the permanent magnet synchronous motor 5 to output corresponding resistance through the motor driving circuit 4 by adopting an FOC constant torsion closed-loop control algorithm according to the resistance, and a user rotates a crank and drives the permanent magnet synchronous motor 5 and the inertia wheel to rotate through a transmission device to exercise; the permanent magnet synchronous motor 5 rotates under the set resistance to generate electric energy, the motor control board controls the motor driving circuit 4 to convert the electric energy into direct current, and controls the second switch circuit 3 to be conducted, so that the direct current is output to the electric energy consumption unit 7 through the second switch circuit 3 to be dissipated in a heat energy mode.
And (3) recovery mode: a user selects a recovery mode on the instrument 11, sets a rotating speed, and the instrument 11 converts the rotating speed into a rotating speed control instruction and sends the rotating speed control instruction to the motor control panel; the motor control board controls the first switch circuit 2 to be switched on, the second switch circuit 3 is switched off, the power supply circuit 1 supplies power for the motor driving circuit 4 through the first switch circuit 2, the motor control board controls the motor driving circuit 4 to drive the permanent magnet synchronous motor 5 to rotate at a set rotating speed according to a rotating speed and a FOC constant rotating speed closed-loop control algorithm, the crank is driven to rotate through the transmission device, the crank drives the foot locked on the pedal to do circular motion, and the purpose of motion recovery is achieved.
The utility model also provides an exercise bicycle, be equipped with foretell resistance generating device, this embodiment's exercise bicycle's concrete structure is as shown in FIG. 4, still include crank 15, belt pulley 13 and belt 14, crank 15 is connected with belt pulley 13's pivot, crank 15's rotation drives belt pulley 13 and rotates, belt pulley 13 passes through belt 14 and is connected with the transmission of PMSM 5, belt pulley 13's rotation passes through belt 14 and drives PMSM 5 and flywheel 12 and rotate, or PMSM 5's rotation passes through belt 14 and drives belt pulley 13 and rotate, and then drive crank 15 and rotate.
The specific working process can refer to the working process, which is not described in detail.
The utility model discloses a resistance generating device both can provide the resistance and take exercise, can provide power again and help user's motion to resume, and the function is various, improves user experience, and adopts same device to realize providing of resistance and power, has effectively reduced the complexity and the manufacturing cost of exercise bicycle structure, provides more spaces for the design of exercise bicycle.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A resistance force generating device, characterized by: comprises a power supply circuit, a first switch circuit, a second switch circuit, an electric energy consumption unit, a motor control panel, a motor drive circuit and a permanent magnet synchronous motor, the power supply circuit supplies power to the whole resistance generating device, one output end of the power supply circuit is connected with the direct current input end of the motor driving circuit through the first switch circuit, the alternating current output end of the motor driving circuit is connected with the input end of the permanent magnet synchronous motor, the direct current output end of the motor driving circuit is connected with the electric energy consumption unit through the second switch circuit, the control ends of the first switch circuit, the second switch circuit and the motor drive circuit are respectively connected with the control output end of the motor control board, when the motor is in a power mode, the motor control board controls the first switching circuit to be switched on, the second switching circuit to be switched off, and controls the motor driving circuit to drive the permanent magnet synchronous motor to correspondingly rotate; when the motor is in the resistance mode, the motor control board controls the second switch circuit to be switched on, the first switch circuit is switched off, and the motor driving circuit controls the permanent magnet synchronous motor to output corresponding resistance.
2. The resistance force generation device according to claim 1, wherein: the electric energy consumption unit is a power resistor.
3. The resistance force generation device according to claim 1, wherein: the motor control panel comprises a main control unit, a bus voltage measuring circuit, a current measuring circuit and a motor rotating speed measuring circuit, wherein the bus voltage measuring circuit is used for measuring the voltage of a direct current bus and outputting the voltage to the main control unit, the current measuring circuit and the motor rotating speed measuring circuit are respectively used for measuring the phase current and the rotating speed of the permanent magnet synchronous motor and outputting the phase current and the rotating speed to the main control unit, and the main control unit carries out corresponding FOC closed-loop control according to the voltage of the direct current bus, the phase current and the rotating speed of the permanent magnet synchronous motor.
4. The resistance force generation device according to claim 1, wherein: the motor driving circuit is realized by adopting a half-bridge driver and a power MOS tube.
5. The resistance force generation device according to claim 1, wherein: the first switch circuit and the second switch circuit are switched on and off by adopting power MOS tubes, and are controlled by PWM signals output by the motor control panel.
6. The resistance force generation device according to claim 1, wherein: the power supply circuit comprises an AC/DC circuit, a voltage stabilizing circuit and a voltage reducing circuit, wherein the input end of the AC/DC circuit is connected with an alternating current input, the output end of the AC/DC circuit is connected with the direct current input end of the motor driving circuit through a first switching circuit, and meanwhile, the voltage stabilizing circuit and the voltage reducing circuit are used for supplying power to all electronic devices of the resistance generating device except the permanent magnet synchronous motor.
7. The resistance force generation device according to claim 1, wherein: still include the instrument, the instrument is connected with motor control panel communication.
8. The resistance force generation device according to claim 1, wherein: the permanent magnet synchronous motor is in a hub shape and is nested on an annular balancing weight.
9. An exercise bicycle, its characterized in that: there is provided a resistance generating device as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921144358.6U CN210612782U (en) | 2019-07-19 | 2019-07-19 | Resistance generating device and exercise bicycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921144358.6U CN210612782U (en) | 2019-07-19 | 2019-07-19 | Resistance generating device and exercise bicycle |
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| CN210612782U true CN210612782U (en) | 2020-05-26 |
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| CN201921144358.6U Active CN210612782U (en) | 2019-07-19 | 2019-07-19 | Resistance generating device and exercise bicycle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110237495A (en) * | 2019-07-19 | 2019-09-17 | 厦门景杉网络科技有限公司 | A resistance generating device and exercise bike |
| CN112057806A (en) * | 2020-09-10 | 2020-12-11 | 山东大学 | Foot-operated lower limb rehabilitation robot control system and method |
-
2019
- 2019-07-19 CN CN201921144358.6U patent/CN210612782U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110237495A (en) * | 2019-07-19 | 2019-09-17 | 厦门景杉网络科技有限公司 | A resistance generating device and exercise bike |
| CN110237495B (en) * | 2019-07-19 | 2025-02-14 | 厦门景杉网络科技有限公司 | Resistance generating device and fitness bike |
| CN112057806A (en) * | 2020-09-10 | 2020-12-11 | 山东大学 | Foot-operated lower limb rehabilitation robot control system and method |
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