CN208984659U - Utilize the device of Hall effect and electromagnetic induction rule measurement walking speed - Google Patents
Utilize the device of Hall effect and electromagnetic induction rule measurement walking speed Download PDFInfo
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- CN208984659U CN208984659U CN201821713651.5U CN201821713651U CN208984659U CN 208984659 U CN208984659 U CN 208984659U CN 201821713651 U CN201821713651 U CN 201821713651U CN 208984659 U CN208984659 U CN 208984659U
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- electromotive force
- control module
- hall
- speed
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Abstract
The utility model relates to a kind of device using Hall effect and electromagnetic induction rule measurement walking speed, the structure of the device is divided into three parts: first part is made of compass and gaussmeter, i.e. hall device circuit system；Second part is made of the conductor of cutting magnetic line and the circuit system of measurement induced electromotive force；Part III is STM32 control module, and STM32 control module receives and provides the size of the speed of travel by the calculation formula embedded after above data, and is output on LED display and shows.The utility model design principle is mainly to utilize the rule of Hall effect and electromagnetic induction phenomenon, i.e., measures walking speed using induced electromotive force or induced current.The utility model is designed reasonably is novel, performance safety is reliable, easy to operate, application effect highly significant；With certain economic benefit and great social benefit, and there is important and wide application prospect.
Description
Technical field
It is the utility model relates to a kind of walking speed counting device, in particular to a kind of to utilize Hall effect and electromagnetic induction rule
Measure the device of walking speed.
Background technique
The measurement of walking speed has very important meaning in production and life；Such as: in certain economic theories
In, speed of travel index is the level of economic development or index of economic development that city can be described from a side, but at present
Measurement all only measurements to average speed to speed of travel index；People take exercises running or on foot when, or even
Car and boat often have a mind to think to understand at any time the travel speed for knowing oneself in advancing, but the health and fitness facilities or instrument that are commercialized can only
Step number, distance and time are provided, this can only obtain average speed；What is reflected is corresponding a certain distance or putting down in the period
Equal speed, it has not been convenient to the speed of reaction immediately at once.
It is thus highly desirable to provide a kind of device for inducing movement velocity immediately, that is, designs one kind and induce immediately
The portable instrument or instrument of movement velocity.All it is rotating shaft transmission formula instrument used in automobile at present, is used in aircraft
Using pressure, the instrument of temperature sensing, these instrument are difficult to repack walking speed of travel instrument into, therefore to the walking speed of travel
The design of instrument is inconvenient to use the working principle of the above two classes instrument.As far as we know, it yet there are no in relation to utilizing Hall
The patent and document report of effect and electromagnetic induction rule measurement walking speed.
Therefore it provides a kind of design novel, the utilization Hall effect of application effect highly significant reasonable, easy to operate and electricity
Magnetic induction rule measures the device of walking speed, is one of the problem of field technical staff currently urgently addresses.
Utility model content
In place of the purpose of this utility model is to overcome above-mentioned deficiency, provide a kind of design rationally, performance safety is reliable, behaviour
Make easy, application effect highly significant the device using Hall effect and electromagnetic induction rule measurement walking speed.
To achieve the above object the technical scheme adopted by the utility model is a kind of utilize Hall effect and electromagnetic induction
The device of rule measurement walking speed, it is characterised in that the structure of the device is divided into three parts:
First part is made of compass and gaussmeter, i.e. hall device circuit system；Second part is by cutting magnetic line
Conductor and measurement induced electromotive force circuit system composition；Part III is STM32 control module；
The first part be for the magnetic induction intensity of the angle and earth's magnetic field of measuring direction of travel and earth's magnetic field, and
Data are inputed to STM32 control module；It is disconnected at direction of advance wherein using not closed circle nichrome resistance wire track
Point adds 1.5 volts of voltages at not closed circle nichrome resistance wire track both ends, is measured at direction of advance with milivoltmeter measurement and guide
Voltage swing between pin positionu 1, data input to STM32 control module；Another hall device is connected perpendicular to compass, is guaranteed
Hall device is always perpendicular to earth's magnetic field；The electric current passed through in hall device is provided by 3 volts of power supply of hall device circuit system
Electric current is measured, the electric current and electromotive force generated on hall device is measured by milliammeter and microvoltmeter, to provide electric currentIWith it is electronic
GestureuData are simultaneously inputed to STM32 control module by size；
Perpendicular to direction of advance fixed conductor in the second part, the conductor cuts the magnetic force in earth's magnetic field when walking
Line generates dynamic raw induced electromotive force, provides induction electric by the milliammeter or microvoltmeter of dynamic raw induced electromotive force circuit system
GestureUSize, and data are inputed to STM32 control module；
Walking speed is provided by embedded calculation formula after the STM32 control module reception above data of the Part III
The size of degree, and be output on LED display and show.
It is a body-building speed of travel indicator that the device, which is separately fabricated, or with include step number, distance, the instruction of time
Device fits together, or is integrated in mobile phone and is convenient for people to use.
The beneficial effects of the utility model are:
(1) the walking speed measuring device of the utility model setting is to measure speed using induced electromotive force or induced current
Degree；
(2) it can measure and obtain instantaneous velocity；
(3) device can separately fabricated be a body-building speed of travel indicator, can also with other step numbers, distance,
The indicators such as time fit together, to provide more walking information；The device, which may alternatively be integrated in mobile phone, facilitates people to make
With.
In short, the utility model measures walking speed using Hall effect and the rule of electromagnetic induction phenomenon, design
It is rationally novel, performance safety is reliable, easy to operate, application effect highly significant；With huge economic benefit and great society
Meeting benefit, and there is important and wide application prospect.
Detailed description of the invention
Fig. 1 is the utility model structure composition block diagram；
Compass and direction of advance angle instrumentation plan in Fig. 2 the utility model；
In figure: 1 direction of advance, 2 compasses, 3 1.5 volts of batteries, 4 not closed circle nichrome resistance wire tracks, 5 copper conductors,
6 binding posts.
Specific embodiment
Below in conjunction with attached drawing and preferred embodiment, to according to specific embodiment provided by the utility model, feature detailed description
It is as follows:
As shown in Figure 1 and Figure 2, a kind of device using Hall effect and electromagnetic induction rule measurement walking speed, the device
Structure be divided into three parts:
First part is made of compass and gaussmeter, i.e. hall device circuit system；Second part is by cutting magnetic line
Conductor and measurement induced electromotive force circuit system composition；Part III is STM32 control module (commercially available).
The first part be for the magnetic induction intensity of the angle and earth's magnetic field of measuring direction of travel and earth's magnetic field, and
Data are inputed to STM32 control module；Wherein using not closed circle nichrome resistance wire track 4, as shown in Fig. 2, advancing
It is breakpoint at direction 1, connects 1.5 volts of batteries 3 with copper conductor 5 at not 4 both ends of closed circle nichrome resistance wire track, use milivoltmeter
Measure the voltage swing at direction of advance 1 between 2 position binding post 6 of compassu 1, data input to STM32 control mould
Block；Another hall device is connected perpendicular to compass, guarantees hall device always perpendicular to earth's magnetic field；The electricity passed through in hall device
Stream provides measurement electric current, the electric current and electromotive force generated on hall device is by milliampere by 3 volts of power supply of hall device circuit system
Table and microvoltmeter measure, to provide electric currentIWith electromotive forceuData are simultaneously inputed to STM32 control module by size.
Perpendicular to direction of advance fixed conductor in the second part, the conductor cuts the magnetic force in earth's magnetic field when walking
Line generates dynamic raw induced electromotive force, provides induction electric by the milliammeter or microvoltmeter of dynamic raw induced electromotive force circuit system
GestureUSize, and data are inputed to STM32 control module.
The speed of travel is provided by embedded calculation formula after the Part III STM32 control module reception above data
Size, and be output on external device (ED) LED display and show.
To physical quantity, is configured in STM32 control module, determine input terminal；Founding mathematical models utilize C language pair
Model is programmed in Notepad；Principal function is established, data are acquired, formula function is called in principal function；To formulaθ=
240u 1,B=ud/IAndV=U/(BLSinθ) be programmed (formula R is the resistance value for measuring electric current,dWithLIt is constant,IRepresentative measures
Electric current,VIt is final output), electric current is converted into voltage in formula, and the voltage value of ADC1 conversion passes to SRAM by MDA mode,
Save collected variate-value；It is updated in function using collected 4 voltage values as variable, formula is called to realize function,
It completes to calculate in formula function, result is exported according to formula.
The measuring device can separately fabricated be a body-building speed of travel indicator, or with other step numbers, distance, time
Equal indicators fit together, to provide more walking information；The device can also be integrated in convenient for people to use in mobile phone.
The utility model design principle is mainly to utilize the rule of Hall effect and electromagnetic induction phenomenon, that is, utilizes induced electricity
Kinetic potential or induced current carry out measuring speed；With experimental principle, its operating procedure is as follows:
(1) by compass indicate the north to, and provide direction of advance (direction of advance is marked in panel surface, walking
When make to indicate direction it is consistent with direction of travel) and the magnetic line of force direction (i.e. northern to) in earth's magnetic field between angle (θ)；
(2) by hall device circuit system provide earth's magnetic field size (B)；
(3) by dynamic raw induced electromotive force circuit system provide induced electromotive force size (U)；
(4) according to the conductor size of motional electromotive force and cutting magnetic line (L) calculate movement speed (V)；The design
Defect is cannot to provide the speed mobile along earth magnetism field direction (close to positive North and South direction)；
Measure compass and direction of advance angle formulae are as follows:
θ=240u 1Formula 1；
The theoretical formula of measuring principle foundation are as follows: have when hall device is vertical with magnetic field
B=ud/IFormula 2；
dFor Hall board size (thickness),
uFor the size of hall electromotive force,
IFor the current strength in hall device；
When conductor (the generating induced electromotive force thereon) direction of cutting magnetic line and magnetic direction are at angleθHave when movement:
V=U/(BLSinθ) formula 3；
VThe as speed of travel,
LFor conductor length,
UFor induced electromotive force.
The design principle of the utility model is: the utility model provides a kind of regular using Hall effect and electromagnetic induction
The device of walking speed is measured, i.e. the utility model mainly measures walking speed using induced electromotive force or induced current.
Specifically:
(1) by compass indicate the north to, and provide direction of advance (direction of advance is marked in panel surface, walking
When make to indicate direction it is consistent with direction of travel) and the magnetic line of force direction (i.e. northern to) in earth's magnetic field between angle (θ), this folder
Angle is exactly the angle in the direction and direction of advance by compass；
Measure compass and direction of advance angle formulae are as follows:
θ=240u 1Formula 1.
(2) hall device is connected perpendicular to compass, is provided by the milliammeter or milivoltmeter of hall device circuit system
Earth's magnetic field size (B)；The theoretical formula of measuring principle foundation are as follows: have when hall device is vertical with magnetic field:
B=ud/IFormula 2；
In formula:dFor Hall board size (thickness),uFor the size of hall electromotive force,IFor the current strength in hall device.
(3) perpendicular to direction of advance fixed conductor, the magnetic line of force in conductor cutting earth's magnetic field, generates dynamic life when walking
Induced electromotive force, by the milliammeter or microvoltmeter of dynamic raw induced electromotive force circuit system provide induced electromotive force size (U).
(4) according to the conductor size of motional electromotive force and cutting magnetic line (L) calculate movement speed (V)；The design
Defect is cannot to provide the speed mobile along earth magnetism field direction (close to positive North and South direction)；
Specifically: when cutting magnetic line conductor (generating induced electromotive force thereon) direction and magnetic direction at angle (θ)
Have when movement:
V=U/(BLSinθ) formula 3；
In formula:VThe as speed of travel,LFor conductor length,UFor induced electromotive force.
Specific application example: people walks along direction northwest, when measuring at direction of advance between guide pin position binding post
Voltageu 1It is 3/16 volt, then has direction of advance and positive northern (earth magnetism field direction) at angleθIt is 45 °；When Hall plate thicknessdIt is
0.005 meter, the current strength in hall deviceIPacify for 0.02, the hall electromotive force generated in hall deviceuIt is 0.00016 volt,
Then earth's magnetic fieldBIt is 0.00004 spy；The dynamic raw induced electromotive force that the conductor of cutting magnetic line generates when if people walksUFor
0.0004 volt, conductor lengthLIt is 0.02 meter, then finally can be calculatedV0.7 meter per second, i.e., people walking speed be 0.7 meter/
Second.
Above-mentioned reference embodiment carries out the device using Hall effect and electromagnetic induction rule measurement walking speed
Detailed description, is illustrative without being restrictive, therefore variation in the case where not departing from the utility model general plotting and is repaired
Change, should belong within the protection scope of the utility model.
Claims (2)
1. a kind of device using Hall effect and electromagnetic induction rule measurement walking speed, it is characterised in that the structure of the device
It is divided into three parts:
First part is made of compass and gaussmeter, i.e. hall device circuit system；Second part is led by cutting magnetic line
The circuit system composition of body and measurement induced electromotive force；Part III is STM32 control module；
The first part is for the magnetic induction intensity of the angle and earth's magnetic field of measuring direction of travel and earth's magnetic field, and number
According to inputing to STM32 control module；It is breakpoint at direction of advance wherein using not closed circle nichrome resistance wire track,
Closed circle nichrome resistance wire track both ends do not add 1.5 volts of voltages, with milivoltmeter measurement measure at direction of advance with compass position
Voltage swing between settingu 1, data input to STM32 control module；Another hall device is connected perpendicular to compass, guarantees Hall
Device is always perpendicular to earth's magnetic field；The electric current passed through in hall device provides measurement by 3 volts of power supply of hall device circuit system
Electric current, the electric current and electromotive force generated on hall device is measured by milliammeter and microvoltmeter, to provide electric currentIWith electromotive forceu
Data are simultaneously inputed to STM32 control module by size；
Perpendicular to direction of advance fixed conductor in the second part, the conductor cuts the magnetic line of force in earth's magnetic field when walking,
Dynamic raw induced electromotive force is generated, induced electromotive force is provided by the milliammeter or microvoltmeter of dynamic raw induced electromotive force circuit systemU
Size, and data are inputed to STM32 control module；
The speed of travel is provided by embedded calculation formula after the STM32 control module reception above data of the Part III
Size, and be output on LED display and show.
2. the device according to claim 1 using Hall effect and electromagnetic induction rule measurement walking speed, feature
Be that the device be separately fabricated is a body-building speed of travel indicator, or with include step number, distance, the indicator group of time
It is fitted together, or is integrated in mobile phone and is convenient for people to use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821713651.5U CN208984659U (en) | 2018-10-23 | 2018-10-23 | Utilize the device of Hall effect and electromagnetic induction rule measurement walking speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821713651.5U CN208984659U (en) | 2018-10-23 | 2018-10-23 | Utilize the device of Hall effect and electromagnetic induction rule measurement walking speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208984659U true CN208984659U (en) | 2019-06-14 |
Family
ID=66788545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821713651.5U Expired - Fee Related CN208984659U (en) | 2018-10-23 | 2018-10-23 | Utilize the device of Hall effect and electromagnetic induction rule measurement walking speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208984659U (en) |
-
2018
- 2018-10-23 CN CN201821713651.5U patent/CN208984659U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190614 Termination date: 20211023 |
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| CF01 | Termination of patent right due to non-payment of annual fee |