CN109131709A - Torque sensor module and electric bicycle based on the torque sensor module - Google Patents
Torque sensor module and electric bicycle based on the torque sensor module Download PDFInfo
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- CN109131709A CN109131709A CN201810955957.XA CN201810955957A CN109131709A CN 109131709 A CN109131709 A CN 109131709A CN 201810955957 A CN201810955957 A CN 201810955957A CN 109131709 A CN109131709 A CN 109131709A
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- torque
- electric bicycle
- torque sensor
- sensor module
- wireless data
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- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 239000011888 foil Substances 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 11
- 238000013480 data collection Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 239000000306 component Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/45—Control or actuating devices therefor
- B62M6/50—Control or actuating devices therefor characterised by detectors or sensors, or arrangement thereof
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The present invention discloses a kind of torque sensor module and the electric bicycle based on the torque sensor module.The torque sensor module is powered using the battery module of replaceable battery, by the voltage signal for acquiring the torque inductor output being made of foil gauge, voltage signal is converted into torque data, then torque data is sent to by wireless data receiving end by wireless data transmission end.Thus, it is possible to remove complicated wired power supply circuit from, implementation cost is reduced.Also, by contactless torque data collection and transmission, transmission data speed is fast, distance is remote and strong antijamming capability, improves implementation flexibility.
Description
Technical field
The present invention relates to sensor technology, in particular to a kind of torque sensor module and be based on the torque sensor module
Electric bicycle.
Background technique
Overwhelming majority electric bicycle all supports assistant mode to assist user to ride at present.In the prior art based on a variety of
Assistant mode can be achieved in sensor, such as velocity sensor, axis torque sensor, rear axle hook pawl sensor.
The simply easily realization, at low cost and high reliablity of strain measurement scheme, has become at present in most cost performance
Shaft torque sensor plan.But foil gauge need to be arranged on axis, until making the data acquisition circuit of sensor must also fix
It is arranged on axis, increases the difficulty of power supply and the data transmission of data acquisition circuit.
Therefore, it is necessary to a kind of more simple easily realization and efficient sensor modules.
Summary of the invention
The object of the present invention is to provide a kind of torque sensor module and the electrical salf-walking based on the torque sensor module
Vehicle efficiently realizes that data acquire with the more simple sensor module easily realized.
According to an aspect of the invention, there is provided a kind of torque sensor module, comprising: torque inductor, including answer
Become piece, is suitable for being arranged on rotatable parts, for when measuring strain signal, output voltage signal；Signal conversion circuit, with
Torque inductor is associatedly arranged on rotatable parts, for the voltage signal of torque inductor output to be converted to torque number
According to；Wireless data transmission end is associatedly arranged on rotatable parts with signal conversion circuit, for by torque data be sent to
The corresponding wireless data receiving end in wireless data transmission end；Battery module, including one or more replaceable batteries, for for
Torque inductor, signal conversion circuit and/or wireless data transmission end provide operating voltage；And wireless data receiving end, it fits
In being arranged on non-rotatable member, for receiving the torque data of wireless data transmission end transmission, and torque data is sent to
Controller is handled.
Optionally, wireless data transmission end and wireless data receiving end are based on RF wireless communication mode, realize torque number
According to transmission.
According to another aspect of the present invention, a kind of electric bicycle is additionally provided, comprising: electric bicycle body, it is electronic
Bicycle body includes at least motor；Torque sensor module as above, be suitable for be arranged in electric bicycle body, using as
The torque sensor of electric bicycle；Controller, be suitable for be arranged in the electric bicycle body, and with torque sensor module
And motor connection, for controlling the driving force of motor output based on the torque data obtained from torque sensor module, with
Realize the Power assisted control to electric bicycle.
Optionally, the rotatable parts are the axis of the electric bicycle, and the wireless data receiving end is arranged in institute
It states on the non-rotatable member of electric bicycle body.
Torque sensor module through the invention as a result, is powered with the battery module of replaceable battery, removes complexity from
Wireless power circuit, reduce implementation cost.Data are transmitted using RF wireless communication mode, transmission speed is fast, transmits
Apart from remote and strong antijamming capability, also, the installation site of wireless data receiving end is not limited yet, improve implementation flexibility.
Detailed description of the invention
Disclosure illustrative embodiments are described in more detail in conjunction with the accompanying drawings, the disclosure above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein in disclosure illustrative embodiments, identical reference label
Typically represent same parts.
Fig. 1 shows the schematic block diagram of torque sensor module according to an embodiment of the invention.
Fig. 2 shows the schematic block diagrams of electric bicycle according to an embodiment of the invention.
Specific embodiment
The preferred embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Preferred embodiment, however, it is to be appreciated that may be realized in various forms the disclosure without the embodiment party that should be illustrated here
Formula is limited.On the contrary, these embodiments are provided so that this disclosure will be more thorough and complete, and can be by the disclosure
Range is completely communicated to those skilled in the art.
Overwhelming majority electric bicycle all supports assistant mode at present, now can realize assistant mode there are two types of technical solution,
One is velocity sensor, another kind is torque sensor.
Velocity sensor can collect the speed of user's pedal, and control electric bicycle according to pedal speed
The driving force of motor output, motor output is directly proportional to pedal speed, and then realizes the purpose of power-assisted.
Power-assisted scheme based on velocity measuring has certain power-assisted effect under common road conditions.But encounter against the wind or on
The high-drags such as slope, high load capacity road conditions in the case where, car body speed itself is lower, motor output driving force it is also smaller, thus,
It is unable to reach the purpose of power-assisted, effect of riding is poor.
Torque sensor can collect the dynamics of user's pedal, control electric bicycle according to strength is trampled
Motor output, motor output driving force it is directly proportional to the dynamics of trampling, better power-assisted effect may be implemented.
The position for trampling dynamics according to acquisition is different, and torque sensor is divided into two kinds, and one is axis torque sensors, separately
One is rear axles to hook pawl sensor.
The junction that rear axle hook pawl sensor is typically mounted at Seat stay and Chain stay is stepped on when user exerts oneself pedal
Legpower degree is transmitted to torque sensor by a series of components such as foot-operated, crank, chain wheel, chain, flywheel, rear drum, vehicle frames.
Since the components of each link are elastomers, strength can generate loss in transmission process, along with " the elasticity of metal
Lag " effect causes measurement numerical error big, but also has measurement delay, cannot achieve ideal power-assisted effect.
Axis torque sensor is mounted on the location mid-shaft of electric bicycle, when user exerts oneself pedal, tramples dynamics
It is transmitted to axis by pedal, crank, generates deformation so as to cause axis.The shape that axis torque sensor passes through detection axis
Become, to judge the strength of people's pedal.This mode measures that numerical error is small, and almost zero propagation, is able to achieve extraordinary
Power-assisted effect.
Currently, axis torque sensor has several implementations: counter magnetostriction effect scheme, torque displacement conversion side
Case, strain measurement scheme, torque magnetic resistance conversion plan.Wherein, strain measurement scheme is simply easily realized, is at low cost and reliable
Property it is high, have become the highest axis torque sensor scheme of cost performance at present.
But strain measurement scheme still has a technological difficulties, that is, since foil gauge is attached on axis, because
This Acquisition Circuit also must be fixedly arranged on axis.And axis is in rotating, the power supply of Acquisition Circuit and data transmission
Just become difficult.
In view of the above-mentioned problems, there are two types of traditional solutions: contact scheme and contactless scheme.
Contact scheme is powered usually using slip ring to be transmitted with signal, but there are life problems for this scheme, for a long time
Abrasion can be generated using slip ring, causes signal transmission unstable.
Contactless scheme is usually using near field wireless power and wireless communication technique, but this scheme is at high cost, implements
Difficult and reliability is low.Also, communication part is easy the interference by power pack, and the stability of near-field communication is also easy by vehicle
Body influence of crust deformation.
In view of this, the invention proposes a kind of improved torque sensor modules, by with the battery of replaceable battery
Module is powered, and is removed complicated wireless power circuit from, is reduced implementation cost.Using transmission speed fast, long transmission distance and
The RF wireless communication mode of strong antijamming capability transmits data.Also, the installation position of wireless data receiving end is not limited yet
It sets, improves implementation flexibility.
The accompanying drawings and embodiments torque sensor module that the present invention will be described in detail will be combined as follows.
Fig. 1 shows the schematic block diagram of torque sensor module according to an embodiment of the invention.
As shown in Figure 1, torque sensor module 100 of the invention may include torque inductor 110, signal conversion circuit
120, wireless data transmission end 130, battery module 140, wireless data receiving end 150.
Torque inductor 110, signal conversion circuit 120, wireless data transmission end 130, battery module 140 are suitable for associatedly
It is arranged on rotatable parts, wireless data receiving end 150 is suitable for being arranged on non-rotatable member.Wherein, rotatable parts and non-turn
Dynamic component can be determined according to the actual installation situation of the torque sensor module, when the torque sensor module is mounted on electricity
When on dynamic bicycle, rotatable parts can be the axis of the electric bicycle, and non-rotatable member can be the electric bicycle
Non-rotating position.
Torque inductor 110 may include foil gauge, for when measuring strain signal, output voltage signal.One
In a preferred embodiment, which can be the balanced bridge being made of foil gauge, measure strain signal
When, the balanced bridge two midpoint output voltage difference signals as acquisition voltage signal.Wherein, strain signal can be
Under external force, the deformation that rotatable parts generate such as rotates.
Signal conversion circuit 120 is connect with torque inductor 110, can acquire the voltage signal of torque inductor output,
And the voltage signal is amplified and the processing such as analog/digital conversion, which is converted into digitized torque data.
Wireless data transmission end 130 is connect with signal conversion circuit 120, after can converting via signal conversion circuit
Torque data is sent to wireless data receiving end corresponding with the wireless data transmission end.
Battery module 140 may include one or more replaceable batteries, which can be above-mentioned torque
Inductor 110, signal conversion circuit 120 and wireless data transmission end 130 provide operating voltage.In this way, data can be adopted
Collector is improved to wireless power by traditional complicated wired power supply, so that power supply facilities is more simple, conveniently.
Wireless data receiving end 150 can receive the torque data of wireless data transmission end transmission, and by torque data
Controller is sent to be handled.
In a preferred embodiment, wireless data receiving end 150 is suitable for being arranged on non-rotatable member, and makes wireless
Data transmitting terminal and wireless data receiving end can in a non-contact manner, such as wireless communication mode realizes torque data
Transmission greatlies simplify data transmission.
In a preferred embodiment, wireless data transmission end and wireless data receiving end can be based on RF wireless communication
Mode realizes the transmission of torque data.In comparison, RF wireless communication mode transmit the speed of data faster, apart from farther
And anti-interference ability is stronger, can ensure that data, stablizing for signal are transmitted.Also, this communication modes are based on, wireless data connects
The installation site of receiving end will not receive limitation, also improve the implementation flexibility of the torque sensor module.
In addition, above-mentioned torque sensor module can be applied to electric bicycle, preferably ridden with being provided for user
Power-assisted.
Fig. 2 shows the schematic block diagrams of electric bicycle according to an embodiment of the invention.
As shown in Fig. 2, electric bicycle 200 of the invention may include electric bicycle body 210, such as preceding torque sensing
Device module 220 and controller 230.
Electric bicycle 200 can be common electric bicycle, be the vehicle frame, wheel, electricity for including the electric bicycle
The Personal Transporter of the electromechanical integration of the control members such as machine, battery, handle/brake lever and display instrument system.Wherein, electric
Dynamic bicycle body 210 may include whole components in electric bicycle in addition to torque sensor and controller, include at least
Motor.
Torque sensor module 220 is suitable for being arranged in the electric bicycle body, using the power as the electric bicycle
Square sensor realizes better power-assisted effect.
Controller 230 be suitable for be arranged in the electric bicycle body, and with torque sensor module and electrical salf-walking
The motor of vehicle connects, for controlling the driving force of motor output based on the torque data obtained from the torque sensor module,
To realize the Power assisted control to electric bicycle.
Wherein, controller can be connect in a manner of wired connection with torque sensor module and motor.Specifically,
Controller based on the wireless data receiving end in connecting line and torque sensor module with wired connection, to be connect from the wireless data
It receives and obtains the torque data from wireless data transmission end.Controller is connected to motor based on connecting line, with defeated to the motor
Driving force corresponding with the torque data out, is achieved in the Power assisted control to electric bicycle.
In a preferred embodiment, it can be suitable for the rotatable parts of the torque inductor of torque sensor module are arranged
The axis of electric bicycle, the non-rotatable member of the wireless data receiving end suitable for setting torque sensor module can be electronic
The non-rotatable member of bicycle.Wherein, axis is the axis for connecting electric bicycle both sides foot pedal, is mounted at frame five-through.
In addition, controller controls the component of motor speed and the core of electric bicycle electrical system in addition to can be,
With under-voltage, current limliting or overcurrent protection function.Controller can also be electric bicycle energy management and various control signals
The core component of processing.Intelligent controller also has a variety of ride modes and vehicle electric component self-checking function.The present invention exists
This is not defined the function of controller.
In addition, torque sensor module of the invention can also be applied in other scenes for needing power-assisted, the present invention couple
This is also with no restriction.
Torque sensor module according to the present invention above is described in detail by reference to attached drawing 1-2 and is based on this turn
The electric bicycle of square sensor module.
Various embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes are obvious for the those of ordinary skill in art field.The selection of term used herein, purport
In the principle, practical application or improvement to the technology in market for best explaining each embodiment, or make the art
Other those of ordinary skill can understand each embodiment disclosed herein.
Claims (5)
1. a kind of torque sensor module, comprising:
Torque inductor, including foil gauge are suitable for being arranged on rotatable parts, for when measuring strain signal, output to be electric
Press signal；
Signal conversion circuit is used for suitable for being associatedly arranged on rotatable parts with the torque inductor by the torque sense
The voltage signal for answering device to export is converted to torque data；
Wireless data transmission end, suitable for being associatedly arranged on rotatable parts with the signal conversion circuit, for that described will turn
Square data are sent to wireless data receiving end corresponding with the wireless data transmission end；
Battery module, including one or more replaceable batteries, for being the torque inductor, the signal conversion circuit
And/or the wireless data transmission end provides operating voltage；And
Wireless data receiving end for receiving the torque data of wireless data transmission end transmission, and the torque data is sent
It is handled to controller.
2. torque sensor module according to claim 1, wherein the wireless data receiving end is suitable for being arranged at non-turn
On dynamic component.
3. torque sensor module according to claim 1, wherein the wireless data transmission end and the wireless data
Receiving end is based on RF wireless communication mode, realizes the transmission of the torque data.
4. a kind of electric bicycle, comprising:
Electric bicycle body, the electric bicycle body include at least motor；
Torque sensor module as described in any one of claim 1-3 is suitable for being arranged in the electric bicycle body
On, using the torque sensor as the electric bicycle；
Controller is suitable for being arranged in the electric bicycle body, and connects with the torque sensor module and the motor
It connects, for controlling the driving force of the motor output based on the torque data obtained from torque sensor module, with realization pair
The Power assisted control of the electric bicycle.
5. electric bicycle according to claim 4, wherein
The rotatable parts are the axis of the electric bicycle, and the wireless data receiving end is arranged in the electric bicycle
On the non-rotatable member of car body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810955957.XA CN109131709A (en) | 2018-08-21 | 2018-08-21 | Torque sensor module and electric bicycle based on the torque sensor module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810955957.XA CN109131709A (en) | 2018-08-21 | 2018-08-21 | Torque sensor module and electric bicycle based on the torque sensor module |
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| Publication Number | Publication Date |
|---|---|
| CN109131709A true CN109131709A (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810955957.XA Pending CN109131709A (en) | 2018-08-21 | 2018-08-21 | Torque sensor module and electric bicycle based on the torque sensor module |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205186456U (en) * | 2015-11-17 | 2016-04-27 | 李群 | Bicycle is with commentaries on classics, torque sensor |
| CN206623955U (en) * | 2016-11-10 | 2017-11-10 | 李群 | Bicycle use chain wheel formula torque sensor |
| JP3217175U (en) * | 2018-02-08 | 2018-07-26 | 浙江▲シン▼駆科技有限公司 | Torque-detectable boost bicycle chainwheel assembly |
| CN210503054U (en) * | 2018-08-21 | 2020-05-12 | 广州大非机器人科技有限公司 | Torque sensor module and electric bicycle based on same |
-
2018
- 2018-08-21 CN CN201810955957.XA patent/CN109131709A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205186456U (en) * | 2015-11-17 | 2016-04-27 | 李群 | Bicycle is with commentaries on classics, torque sensor |
| CN206623955U (en) * | 2016-11-10 | 2017-11-10 | 李群 | Bicycle use chain wheel formula torque sensor |
| JP3217175U (en) * | 2018-02-08 | 2018-07-26 | 浙江▲シン▼駆科技有限公司 | Torque-detectable boost bicycle chainwheel assembly |
| CN210503054U (en) * | 2018-08-21 | 2020-05-12 | 广州大非机器人科技有限公司 | Torque sensor module and electric bicycle based on same |
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