CN216636719U - Wireless power supply pedal torque sensor of bicycle - Google Patents
Wireless power supply pedal torque sensor of bicycle Download PDFInfo
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- CN216636719U CN216636719U CN202122728324.5U CN202122728324U CN216636719U CN 216636719 U CN216636719 U CN 216636719U CN 202122728324 U CN202122728324 U CN 202122728324U CN 216636719 U CN216636719 U CN 216636719U
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Abstract
The utility model discloses a pedal torque sensor of wireless power supply of bicycle, it relates to bicycle torque sensor technical field. It sets up including the laminating and is used for detecting the foil gage of power size when the bicycle is trampled on the crank middle part, the winding sets up on the crank connecting seat with crank junction outlying first coil, the winding sets up on the crank with the corresponding second coil that sets up of first coil, set up the output circuit board of being connected with first coil electricity inside the crank connecting seat, set up the receiving terminal circuit board of being connected with second coil and foil gage electricity on the crank, first coil and second coil radio signal are connected. After the technical scheme is adopted, the beneficial effects of the utility model are as follows: be provided with the coil on crank and crank connecting seat respectively, can be wireless carry out the transmission of electric energy and the transmission of signal, still need when having avoided the foil gage to install on the crank with crank connecting seat wired connection, wireless power supply has avoided using the battery.
Description
Technical Field
The utility model relates to the technical field of bicycle torque sensors, in particular to a wireless power supply pedal torque sensor for a bicycle.
Background
The spinning is basically similar to a common bicycle and comprises a handlebar, a saddle, a pedal and wheels, wherein a bicycle body is firmly connected into a whole. Different from the common bicycle, the structure of the bicycle can be greatly adjusted, so that a user can feel more comfortable when riding the bicycle. After overcoming all the disadvantages of outdoor driving, the spinning becomes an aerobic exercise which can exercise the whole body because of the improvement of the technology and the simple and easy learning of the exercise. After the spinning movement, a lot of energy is consumed, a lot of sweat is produced, meanwhile, the strength of the legs of a trainer is enhanced, the body of the lower limbs is beautified, and the oxygen uptake of the body is improved. Practice proves that the spinning training for 40 minutes can consume about 500 calories of heat.
The bicycle needs to measure the force of stepping on the pedal (referred to as pedaling force for short) to provide more accurate exercise data for the user. It is common practice to use strain gauges as force sensors. The strain gage circuit must be mounted on the crank and have a stable power supply. The strain gage circuit must rotate with the crank. If a connecting wire is used to power the circuit, the wire will twist off. If the battery is adopted for power supply, the cost, the environmental protection and the user operation are not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a wireless power supply pedal torsion sensor of a bicycle, which can be used for solving the defects and shortcomings of the prior art, wherein coils are respectively arranged on a crank and a crank connecting seat, so that electric energy transmission and signal transmission can be performed wirelessly, a strain gauge is prevented from being connected with the crank connecting seat in a wired mode when being arranged on the crank, wireless power supply is realized, a battery is avoided, a group of coils can be used for transmitting data and supplying power at the same time, the cost of a wireless chip is saved, the manufacturing cost is lower, and the wireless power supply pedal torsion sensor is beneficial to environmental protection and user operation; the deformation of the crank is directly detected by adopting the strain gauge to obtain the pedal force, and the pedal force is directly transmitted through the coil, so that the data is more accurate; the speed measuring Hall sensor and the induction magnet are arranged, so that the speed of trampling the bicycle can be obtained more accurately.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a pedal torque sensor of wireless power supply of bicycle, it includes that fixed setting is crank connecting seat on the bicycle again, the crank of rotation setting on the crank connecting seat, laminating setting are used for detecting the foil gage of strength size when the bicycle is trampled at the crank middle part, its characterized in that: the crank connecting seat is characterized by further comprising a first coil wound on the periphery of the connecting part of the crank connecting seat and the crank, a second coil wound on the crank and arranged corresponding to the first coil, an output end circuit board arranged inside the crank connecting seat and electrically connected with the first coil, and a receiving end circuit board arranged on the crank and electrically connected with the second coil and the strain gauge, wherein the first coil is in wireless signal connection with the second coil;
the output end circuit board is used for receiving power supplied to the strain gauge and the receiving end circuit board through the first coil transmitting power supply by the second coil, and the receiving end circuit board is used for transmitting a data signal detected by the strain gauge to the output end circuit board through the second coil and receiving and transmitting the data signal to the first coil.
The further improvement is that: the output end circuit board comprises a first single chip microcomputer, an electric energy output circuit, a detection and waveform conditioning circuit, wherein the first single chip microcomputer, the electric energy output circuit, an electrically connected first coil, the detection and waveform conditioning circuit and the first single chip microcomputer are sequentially and electrically connected.
The further improvement is that: the receiving end circuit board comprises a second single chip microcomputer, a strain gauge circuit, an electric energy receiving circuit and a load control circuit, wherein the strain gauge, the strain gauge circuit, the second single chip microcomputer, the load control circuit and the electric energy receiving circuit are sequentially and electrically connected, and the second coil is electrically connected with the electric energy receiving circuit.
The further improvement is that: still including setting up the hall sensor that tests the speed that is connected with first singlechip electricity on output circuit board, setting up the induction magnet that corresponds with hall sensor tests the speed in the crank towards the one side of crank connecting seat, hall sensor tests the speed is used for crank rotation when the bicycle is trampled, with induction magnet cooperation is tested the speed.
The further improvement is that: and a first coil winding groove for winding a first coil is formed in the crank connecting seat.
The further improvement is that: and a second coil winding groove for winding a second coil is arranged on the crank.
The further improvement is that: and a pedal connecting port for connecting a bicycle pedal is arranged at one end of the crank, which is far away from the crank connecting seat.
The further improvement is that: the strain gauge circuit comprises a resistance bridge, a zero-setting potentiometer and a differential amplifier.
After adopting above-mentioned technical scheme, compare in prior art and have following beneficial effect:
the crank and the crank connecting seat are respectively provided with the coil, so that electric energy transmission and signal transmission can be performed wirelessly, the phenomenon that a strain gauge is connected with the crank connecting seat in a wired mode when being installed on the crank is avoided, wireless power supply is achieved, a battery is avoided, one group of coils can transmit data and supply power at the same time, the cost of a wireless chip is saved, the manufacturing cost is lower, and the operation of the crank connecting seat, the environment and a user is facilitated; the deformation of the crank is directly detected by adopting the strain gauge to obtain the pedal force, and the pedal force is directly transmitted through the coil, so that the data is more accurate; the speed measuring Hall sensor and the induction magnet are arranged, so that the speed of trampling the bicycle can be obtained more accurately.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 schematic structural view of the present invention;
FIG. 2 is a side view of the present invention corresponding to FIG. 1;
FIG. 3 is a schematic structural view of the crank connecting base 1 of the present invention;
FIG. 4 is a schematic view of the crank 2 according to the present invention;
FIG. 5 is a schematic block diagram of the circuit schematic of the present invention;
FIG. 6 is a circuit diagram of a strain gage circuit 62 in the present invention;
fig. 7 is a circuit diagram of the power output circuit 52 in the present invention;
fig. 8 is a circuit diagram of the power receiving circuit 63 in the present invention.
Description of reference numerals: crank connecting seat 1, crank 2, first coil 3, second coil 4, output end circuit board 5, receiving terminal circuit board 6, induction magnet 7, speed measuring hall sensor 8, foil gage 9, first coil winding groove 11, second coil winding groove 21, footboard connector 22, first singlechip 51, electric energy output circuit 52, detection and waveform conditioning circuit 53, second singlechip 61, foil gage circuit 62, electric energy receiving circuit 63, load control circuit 64.
Detailed Description
Referring to fig. 1 to 8, the technical solution adopted by the present embodiment is: a wireless power supply pedal torque sensor of a bicycle comprises a crank connecting seat 1 fixedly arranged on the bicycle, a crank 2 rotatably arranged on the crank connecting seat 1, a strain gauge 9 attached to the middle part of the crank 2 and used for detecting the force when the bicycle is trampled, a first coil 3 wound on the crank connecting seat 1 and arranged at the periphery of the joint with the crank 2, a second coil 4 wound on the crank 2 and arranged corresponding to the first coil 3, an output end circuit board 5 arranged inside the crank connecting seat 1 and electrically connected with the first coil 3, and a receiving end circuit board 6 arranged on the crank 2 and electrically connected with the second coil 4 and the strain gauge 9, wherein the first coil 3 is in wireless signal connection with the second coil 4;
the output end circuit board 5 is used for receiving power supply for the strain gauge 9 and the receiving end circuit board 6 through the first coil 3 transmitting power supply by the second coil 4, and the receiving end circuit board 6 is used for transmitting the data signal detected by the strain gauge 9 through the second coil 4 and receiving and transmitting the data signal to the output end circuit board 5 through the first coil 3.
The output end circuit board 5 is electrically connected with a power supply on the bicycle on which the crank connecting seat 1 is installed.
The output end circuit board 5 comprises a first single chip microcomputer 51, an electric energy output circuit 52 and a detection and waveform conditioning circuit 53, wherein the first single chip microcomputer 51, the electric energy output circuit 52, the electric connection first coil 3, the detection and waveform conditioning circuit 53 and the first single chip microcomputer 51 are electrically connected in sequence.
The receiving end circuit board 6 comprises a second single chip microcomputer 61, a strain gauge circuit 62, an electric energy receiving circuit 63 and a load control circuit 64, the strain gauge 9, the strain gauge circuit 62, the second single chip microcomputer 61, the load control circuit 64 and the electric energy receiving circuit 63 are electrically connected in sequence, and the second coil 4 is electrically connected with the electric energy receiving circuit 63.
Wherein, still including setting up on output circuit board 5 with the speed measuring hall sensor 8 that first singlechip 51 electricity is connected, set up at the crank 2 towards the induction magnet 7 that corresponds with speed measuring hall sensor 8 on the one side of crank connecting seat 1, speed measuring hall sensor 8 is used for crank 2 rotation when the bicycle is trampled, with induction magnet 7 cooperation is tested the speed.
Wherein, a first coil winding groove 11 for winding the first coil 3 is arranged on the crank connecting seat 1.
Wherein, the crank 2 is provided with a second coil winding groove 21 for winding the second coil 4.
Wherein, one end of the crank 2 far away from the crank connecting seat 1 is provided with a pedal connecting port 22 for connecting the bicycle pedal.
The strain gauge circuit 62 includes a resistor bridge, a zero-setting potentiometer, and a differential amplifier.
The working principle of the utility model is as follows: when the crank is used, a power supply on the bicycle supplies power, the first single chip microcomputer drives the first coil to emit electric energy through the electric energy output circuit, the second coil receives the electric energy, and the electric energy is received and converted into corresponding power supply to supply power to the circuit and the strain gauge on the crank; meanwhile, a user steps on a bicycle pedal, the crank is slightly deformed by the stepping force, the deformation causes the deformation of a strain gauge in the middle of the crank, the strain gauge is converted into a voltage signal through a resistance bridge and a differential amplifier, a second single chip microcomputer AD acquires voltage data of the strain gauge, then the data are modulated and sent out through a second coil through a load control circuit, and the signal is received through a first coil driven by a detection and waveform conditioning circuit; because the voltage signal is in direct proportion to the force, the first single chip microcomputer calculates the magnitude of the pedaling force according to the voltage signal and then transmits the magnitude of the pedaling force to a control center of the bicycle; when trampling bicycle pedal, the crank rotates thereupon, and its response magnet also can rotate thereupon, and the rotatory round of response magnet can once through the hall sensor that tests the speed, and hall sensor that tests the speed counts it, and first singlechip reads the data that the hall sensor that tests the speed to test the speed.
While there have been shown and described what are at present considered to be the fundamental principles of the utility model and its essential features and advantages, it will be understood by those skilled in the art that the utility model is not limited by the embodiments described above, which are included to illustrate the principles of the utility model, but that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents. The utility model is not described in detail, but is well known to those skilled in the art.
Claims (8)
1. The utility model provides a pedal torque sensor of wireless power supply of bicycle, it sets up the crank on the crank connecting seat, the laminating including fixed crank connecting seat, the rotation that sets up on the bicycle, and the laminating sets up the foil gage that is used for detecting the time power size is trampled at the bicycle on the crank middle part, its characterized in that: the crank connecting seat is characterized by further comprising a first coil wound on the periphery of the connecting part of the crank connecting seat and the crank, a second coil wound on the crank and arranged corresponding to the first coil, an output end circuit board arranged inside the crank connecting seat and electrically connected with the first coil, and a receiving end circuit board arranged on the crank and electrically connected with the second coil and the strain gauge, wherein the first coil is in wireless signal connection with the second coil;
the output end circuit board is used for receiving power supplied to the strain gauge and the receiving end circuit board through the first coil transmitting power supply by the second coil, and the receiving end circuit board is used for transmitting a data signal detected by the strain gauge to the output end circuit board through the second coil and receiving and transmitting the data signal to the first coil.
2. The wireless power supply pedal torque sensor for the bicycle according to claim 1, wherein: the output end circuit board comprises a first single chip microcomputer, an electric energy output circuit, a detection and waveform conditioning circuit, wherein the first single chip microcomputer, the electric energy output circuit, an electrically connected first coil, the detection and waveform conditioning circuit and the first single chip microcomputer are sequentially and electrically connected.
3. The wireless power supply pedal torque sensor for the bicycle according to claim 1, wherein: the receiving end circuit board comprises a second single chip microcomputer, a strain gauge circuit, an electric energy receiving circuit and a load control circuit, wherein the strain gauge, the strain gauge circuit, the second single chip microcomputer, the load control circuit and the electric energy receiving circuit are sequentially and electrically connected, and the second coil is electrically connected with the electric energy receiving circuit.
4. The wireless power supply pedal torque sensor for the bicycle according to claim 2, wherein: still including setting up the hall sensor that tests the speed that is connected with first singlechip electricity on output circuit board, setting up the induction magnet that corresponds with hall sensor tests the speed in the crank towards the one side of crank connecting seat, hall sensor tests the speed is used for crank rotation when the bicycle is trampled, with induction magnet cooperation is tested the speed.
5. The wireless power supply pedal torque sensor for the bicycle according to claim 1, wherein: and a first coil winding groove for winding a first coil is formed in the crank connecting seat.
6. The wireless power supply pedal torque sensor for the bicycle according to claim 1, wherein: and a second coil winding groove for winding a second coil is arranged on the crank.
7. The wireless power supply pedal torque sensor for the bicycle according to claim 1, wherein: and a pedal connecting port for connecting a bicycle pedal is arranged at one end of the crank, which is far away from the crank connecting seat.
8. The wireless power supply pedal torque sensor for bicycle according to claim 3, wherein: the strain gauge circuit comprises a resistance bridge, a zero-setting potentiometer and a differential amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122728324.5U CN216636719U (en) | 2021-11-09 | 2021-11-09 | Wireless power supply pedal torque sensor of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122728324.5U CN216636719U (en) | 2021-11-09 | 2021-11-09 | Wireless power supply pedal torque sensor of bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216636719U true CN216636719U (en) | 2022-05-31 |
Family
ID=81732792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122728324.5U Active CN216636719U (en) | 2021-11-09 | 2021-11-09 | Wireless power supply pedal torque sensor of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216636719U (en) |
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2021
- 2021-11-09 CN CN202122728324.5U patent/CN216636719U/en active Active
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