CN208000105U - Fitness equipment position detecting module - Google Patents
Fitness equipment position detecting module Download PDFInfo
- Publication number
- CN208000105U CN208000105U CN201820216138.9U CN201820216138U CN208000105U CN 208000105 U CN208000105 U CN 208000105U CN 201820216138 U CN201820216138 U CN 201820216138U CN 208000105 U CN208000105 U CN 208000105U
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- resistance
- magnetoresistive angle
- capacitance
- sensor configuration
- fitness equipment
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Abstract
The utility model discloses a kind of fitness equipment position detecting modules comprising magnetic bodies, magnetoresistive angle sensing unit, amplifying unit and microprocessor;Magnetoresistive angle sensing unit includes magnetoresistive angle-sensor configuration, magnetoresistive angle-sensor configuration is mounted on the first component of fitness equipment, magnetic bodies is mounted on the second component of fitness equipment, and magnetic bodies is in the detection range of magnetoresistive angle-sensor configuration always during the first component and second component relative displacement;The output end of magnetoresistive angle-sensor configuration connects amplifying unit input terminal, and the output end of amplifying unit connects microprocessor.The first component and second component of fitness equipment generate relative displacement after person taking exercise has an effect, magnetic field size detected by magnetoresistive angle sensing unit changes, the analog voltage of output changes correspondingly, amplifying unit is sent to microprocessor after amplifying analog voltage, and accurate knots modification is calculated by microprocessor.This programme accuracy of detection is high, and simple in structure, anti-interference is good.
Description
Technical field
The utility model is related to fitness equipment apparatus fields, more particularly, to a kind of fitness equipment position detecting module.
Background technology
It is component part important in body building that instrument, which is taken exercise,.In order to rationally grasp progress and detection workout results, really
Guarantor's process safety is effective, and fitness equipment needs accurately to detect relative movements of stressed member etc..
Invention content
Shortage precision height, body-building equipment position simple in structure present in the utility model mainly solution prior art
The technical issues of amount of movement detection module, provides a kind of high-precision fitness equipment position detecting module.
What the utility model was mainly addressed by following technical proposals in view of the above technical problems:A kind of fitness equipment
Material position detecting module, including magnetic bodies, magnetoresistive angle sensing unit, amplifying unit and microprocessor;The magnetoresistive angle
Sensing unit includes magnetoresistive angle-sensor configuration, and magnetoresistive angle-sensor configuration is mounted on the first component of fitness equipment, magnetic bodies
On the second component of fitness equipment, magnetic bodies is in magnetic always during the first component and second component relative displacement
In the detection range for hindering angular transducer;The output end of magnetoresistive angle-sensor configuration connects amplifying unit input terminal, amplifying unit
Output end connects microprocessor.
The first component and second component of fitness equipment generate relative displacement after person taking exercise has an effect(Such as the first component is
Spring first end is linked up with, and second component is linked up with for spring second end), the magnetic field size hair detected by magnetoresistive angle sensing unit
The analog voltage of changing, output changes correspondingly, and amplifying unit is sent to microprocessor after amplifying analog voltage, by micro-
Reason device calculates accurate knots modification, and carries out subsequent processing, for example, the resistance levels or wattage of fitness equipment display.This
Scheme accuracy of detection is high, and simple in structure, anti-interference is good.
Preferably, the magnetoresistive angle-sensor configuration is KMA210, KMA215, KMA220 or KMA221.
KMA series magnetoresistive sensors have the advantages that small, stability is high.
Preferably, the magnetoresistive angle sensing unit includes magnetoresistive angle-sensor configuration U2, capacitance C3, capacitance C4, capacitance
C5, resistance R3, capacitance R4 and capacitance R6;The anode connection positive pole of magnetoresistive angle-sensor configuration U2(Such as+5V ,+3.3V), magnetic
The cathode ground connection of angular transducer U2 is hindered, the output end of magnetoresistive angle-sensor configuration U2 connects the first end of resistance R3, resistance R3's
Second end connects positive pole(Such as+5V), capacitance C3 is connected across between 1 foot of magnetoresistive angle-sensor configuration U2 and 2 feet;Capacitance C4's
First end connects the first end of resistance R3, the second end ground connection of capacitance C4;Resistance R6 and capacitance C4 are in parallel;The first end of resistance R4
The first end of resistance R3 is connected, the second end of resistance R4 connects amplifying unit;The second of the first end connection resistance R4 of capacitance C5
End, the second end ground connection of capacitance C5.
Magnetoresistive angle-sensor configuration is amplified from the orthogonal differential signal of electric bridge two-way, and numeric field is converted into.By
Digital-to-analogue conversion is at analog voltage, and the analog voltage is by the linear convergent rate as angle value, relationship proportional to supply voltage.
Preferably, the amplifying unit includes operational amplifier U1A, operational amplifier U1B, capacitance C1, capacitance C2, electricity
Hinder R1, resistance R2, resistance R5, resistance R7 and zener diode D1;The in-phase input end of operational amplifier U1B connects magnetoresistive angle
Sensing unit, inverting input connect output end, capacitance C2 be connected across operational amplifier U1B power supply anode and power supply cathode it
Between;The output end of the first end connection operational amplifier U1B of resistance R5, the second end connection operational amplifier U1A's of resistance R5
Inverting input;The first end of resistance R1 connects positive pole(Such as+5V), the second end connection operational amplifier U1A of resistance R1
In-phase input end, the in-phase input end of the first end connection operational amplifier U1A of resistance R2, the second end ground connection of resistance R2;
Capacitance C1 and resistance R2 are in parallel;Resistance R7 is connected across between the inverting input and output end of operational amplifier U1A, operation amplifier
The output end of device U1A connects microprocessor;The cathode connection operation of the plus earth of zener diode D1, zener diode D1 is put
The output end of big device U1A.
The voltage value that amplifying unit exports magnetoresistive angle sensing unit amplifies, and is output to microprocessor.
Preferably, the microprocessor is STM32F030C8T6.
Microprocessor has analog-to-digital conversion process ability, and amplifying unit output signal is drawn with the input of microprocessor analogue signal
Foot is connected.Microprocessor passes through lookup table mode or fitting function meter by the variation of acquisition amplifying unit analog input signal
Calculate the variation of equipment relevant position.
Magnetic bodies is the ferromagnetic materials such as magnet, rubidium iron boron.The mounting means of magnetisable material and magnetoresistive angle-sensor configuration
It is not limited, it is only necessary to magnetic bodies be allowed to be in the induction range of magnetoresistive angle-sensor configuration.
The advantageous effect that the utility model is brought has been to provide the fitness equipment position inspection that a kind of precision is high, simple in structure
Survey scheme, easy for installation, applicability is wide.
Description of the drawings
Fig. 1 is a kind of circuit diagram of the utility model.
Specific implementation mode
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment:A kind of fitness equipment position detecting module, including magnetic bodies, magnetoresistive angle sensing unit, amplification list
Member and microprocessor;The magnetoresistive angle sensing unit includes magnetoresistive angle-sensor configuration, and magnetoresistive angle-sensor configuration is mounted on body-building
On the first component of equipment, magnetic bodies is mounted on the second component of fitness equipment, and the first component and second component are with respect to position
Magnetic bodies is in the detection range of magnetoresistive angle-sensor configuration always during shifting;The output end of magnetoresistive angle-sensor configuration connects
The output end of amplifying unit input terminal, amplifying unit connects microprocessor.
The first component and second component of fitness equipment generate relative displacement after person taking exercise has an effect, and magnetoresistive angle sensing is single
Magnetic field size detected by member changes, and the analog voltage of output changes correspondingly, and amplifying unit amplifies analog voltage
After be sent to microprocessor, accurately knots modification is calculated by microprocessor, and carry out subsequent processing, for example, fitness equipment resistance
The display of power level or wattage.This programme accuracy of detection is high, and simple in structure, anti-interference is good.
As shown in Figure 1, magnetoresistive angle sensing unit include magnetoresistive angle-sensor configuration U2, capacitance C3, capacitance C4, capacitance C5,
Resistance R3, capacitance R4 and capacitance R6;The anode connection positive pole of magnetoresistive angle-sensor configuration U2, such as+5V ,+3.3V, magnetic resistance angle
The cathode for spending sensor U2 is grounded, the first end of the output end connection resistance R3 of magnetoresistive angle-sensor configuration U2, and the second of resistance R3
End connection positive pole, such as+5V, capacitance C3 are connected across between 1 foot of magnetoresistive angle-sensor configuration U2 and 2 feet;The first of capacitance C4
The first end of end connection resistance R3, the second end ground connection of capacitance C4;Resistance R6 and capacitance C4 are in parallel;The first end of resistance R4 connects
The second end of the first end of resistance R3, resistance R4 connects amplifying unit;The second end of the first end connection resistance R4 of capacitance C5, electricity
Hold the second end ground connection of C5.
Magnetoresistive angle-sensor configuration is KMA210, and can also selecting grace intelligence Pu KMA215, KMA220, KMA221 etc., other are similar
Function element.KMA series magnetoresistive sensors have the advantages that small, stability is high.
Amplifying unit include operational amplifier U1A, operational amplifier U1B, capacitance C1, capacitance C2, resistance R1, resistance R2,
Resistance R5, resistance R7 and zener diode D1;The in-phase input end of operational amplifier U1B connects magnetoresistive angle sensing unit, instead
Phase input terminal connects output end, and capacitance C2 is connected across between the power supply anode of operational amplifier U1B and power supply cathode;Resistance R5's
First end connects the output end of operational amplifier U1B, the inverting input of the second end connection operational amplifier U1A of resistance R5;
The first end of resistance R1 connects positive pole, such as+5V, and the second end of resistance R1 connects the in-phase input end of operational amplifier U1A,
The in-phase input end of the first end connection operational amplifier U1A of resistance R2, the second end ground connection of resistance R2;Capacitance C1 and resistance R2
It is in parallel;Resistance R7 is connected across between the inverting input and output end of operational amplifier U1A, the output end of operational amplifier U1A
Connect microprocessor;The plus earth of zener diode D1, the output of the cathode connection operational amplifier U1A of zener diode D1
End.
The microprocessor is STM32F030C8T6.
Microprocessor has analog-to-digital conversion process ability, and amplifying unit output signal is drawn with the input of microprocessor analogue signal
Foot is connected.Microprocessor passes through lookup table mode or fitting function meter by the variation of acquisition amplifying unit analog input signal
Calculate the variation of equipment relevant position.
Magnetoresistive angle-sensor configuration is amplified from the orthogonal differential signal of electric bridge two-way, and numeric field is converted into.By
Digital-to-analogue conversion is at analog voltage, and the analog voltage is by the linear convergent rate as angle value, relationship proportional to supply voltage.It puts
The voltage value that big unit exports magnetoresistive angle sensing unit amplifies, and is output to microprocessor.Microprocessor adopts analog voltage
It is AD converted after sample, and corresponding data processing is carried out according to transformed result.
Magnetic bodies is the ferromagnetic materials such as magnet, rubidium iron boron.The mounting means of magnetisable material and magnetoresistive angle-sensor configuration
It is not limited, it is only necessary to magnetic bodies be allowed to be in the induction range of magnetoresistive angle-sensor configuration.
Specific embodiment described herein is only to be given an example to the invention spirit.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the principles of the present invention or beyond the scope of the appended claims.
Although the terms such as magnetic bodies, magnetoresistive angle-sensor configuration, microprocessor are used more herein, it is not precluded
Use the possibility of other terms.The use of these items is only for more easily describe and explain the sheet of the utility model
Matter;Any one of the additional limitations is construed as all to disagree with the invention spirit.
Claims (5)
1. a kind of fitness equipment position detecting module, which is characterized in that including magnetic bodies, magnetoresistive angle sensing unit, amplification
Unit and microprocessor;The magnetoresistive angle sensing unit includes magnetoresistive angle-sensor configuration, and magnetoresistive angle-sensor configuration is mounted on strong
On the first component of body equipment, magnetic bodies is mounted on the second component of fitness equipment, and the first component and second component are opposite
Magnetic bodies is in the detection range of magnetoresistive angle-sensor configuration always in displacement process;The output end of magnetoresistive angle-sensor configuration connects
Amplifying unit input terminal is connect, the output end of amplifying unit connects microprocessor.
2. fitness equipment position detecting module according to claim 1, which is characterized in that the magnetoresistive angle-sensor configuration is
KMA210, KMA215, KMA220 or KMA221.
3. fitness equipment position detecting module according to claim 1 or 2, which is characterized in that the magnetoresistive angle sensing
Unit includes magnetoresistive angle-sensor configuration U2, capacitance C3, capacitance C4, capacitance C5, resistance R3, resistance R4 and resistance R6;Magnetoresistive angle
The anode connection positive pole of sensor U2, the cathode ground connection of magnetoresistive angle-sensor configuration U2, the output of magnetoresistive angle-sensor configuration U2
The first end of end connection resistance R3, the second end of resistance R3 connect positive pole, and capacitance C3 is connected across magnetoresistive angle-sensor configuration U2
1 foot and 2 feet between;The first end of the first end connection resistance R3 of capacitance C4, the second end ground connection of capacitance C4;Resistance R6 and electricity
It is in parallel to hold C4;The first end of the first end connection resistance R3 of resistance R4, the second end of resistance R4 connect amplifying unit;Capacitance C5's
First end connects the second end of resistance R4, the second end ground connection of capacitance C5.
4. fitness equipment position detecting module according to claim 1 or 2, which is characterized in that the amplifying unit includes
Operational amplifier U1A, operational amplifier U1B, capacitance C1, capacitance C2, resistance R1, resistance R2, resistance R5, resistance R7 and voltage stabilizing two
Pole pipe D1;The in-phase input end of operational amplifier U1B connects magnetoresistive angle sensing unit, and inverting input connects output end, electricity
Hold C2 to be connected across between the power supply anode of operational amplifier U1B and power supply cathode;The first end of resistance R5 connects operational amplifier
The output end of U1B, the inverting input of the second end connection operational amplifier U1A of resistance R5;The first end connection electricity of resistance R1
Source anode, the in-phase input end of the second end connection operational amplifier U1A of resistance R1, the first end of resistance R2 connect operation amplifier
The in-phase input end of device U1A, the second end ground connection of resistance R2;Capacitance C1 and resistance R2 are in parallel;Resistance R7 is connected across operation amplifier
Between the inverting input and output end of device U1A, the output end of operational amplifier U1A connects microprocessor;Zener diode D1
Plus earth, the output end of the cathode connection operational amplifier U1A of zener diode D1.
5. fitness equipment position detecting module according to claim 4, which is characterized in that the microprocessor is
STM32F030C8T6。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820216138.9U CN208000105U (en) | 2018-02-07 | 2018-02-07 | Fitness equipment position detecting module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820216138.9U CN208000105U (en) | 2018-02-07 | 2018-02-07 | Fitness equipment position detecting module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208000105U true CN208000105U (en) | 2018-10-23 |
Family
ID=63837305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820216138.9U Active CN208000105U (en) | 2018-02-07 | 2018-02-07 | Fitness equipment position detecting module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208000105U (en) |
-
2018
- 2018-02-07 CN CN201820216138.9U patent/CN208000105U/en active Active
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