CN109259769A - A kind of angular transducer for leg angle measurement - Google Patents
A kind of angular transducer for leg angle measurement Download PDFInfo
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- CN109259769A CN109259769A CN201811127361.7A CN201811127361A CN109259769A CN 109259769 A CN109259769 A CN 109259769A CN 201811127361 A CN201811127361 A CN 201811127361A CN 109259769 A CN109259769 A CN 109259769A
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- 238000005259 measurement Methods 0.000 title claims abstract description 53
- 210000002414 leg Anatomy 0.000 claims abstract description 47
- 210000000689 upper leg Anatomy 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims abstract description 8
- 230000006698 induction Effects 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims 1
- 238000012937 correction Methods 0.000 abstract description 6
- 238000012549 training Methods 0.000 abstract description 6
- 230000001939 inductive effect Effects 0.000 description 9
- 230000006870 function Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000006386 memory function Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1071—Measuring physical dimensions, e.g. size of the entire body or parts thereof measuring angles, e.g. using goniometers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Measuring devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1075—Measuring physical dimensions, e.g. size of the entire body or parts thereof for measuring dimensions by non-invasive methods, e.g. for determining thickness of tissue layer
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Physics & Mathematics (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
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- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a kind of angular transducers for leg angle measurement, belong to angular transducer field, including for generating first angle signal and the first temperature signal at thigh, and first angle signal and the first temperature signal are transmitted to the first circuit board of single-chip microcontroller, for generating second angle signal and second temperature signal at shank, and second angle signal and second temperature signal are transmitted to the second circuit board of single-chip microcontroller, for handling first angle signal, second angle signal, first temperature signal, second temperature signal, obtain the single-chip microcontroller of final angle value.Inaccuracy, environment temperature and high-intensity magnetic field generate interference to measurement result and lead to error when solving the problems, such as in leg type correction, dance training and leg rehabilitation by visually observing leg type angle change, can be used for leg type correction, dance training and rehabilitation etc..
Description
Technical field
The present invention provides a kind of angular transducer for leg angle measurement, belongs to angular transducer field.
Background technique
The potentiometer of existing angular transducer such as contact is caused by detecting the potentiometer being connected in shaft sliding
Circuit in voltage change, calculate the corresponding motion conditions of shaft.Its principle is simple, but the sliding of potentiometer through a long time rubs
It wipes, after resistor body is worn, precision can decline or even entirely ineffective.It is exactly magnetic position sensor in addition there are a kind of situation, benefit
Rotating excitation field is generated with the rotation of permanent magnet, the direction in magnetic field is then detected by magnetic potential sensing chip, to detect to revolve
Gyration.But such structure, there is also a problem, magnetic potential sensing chip can not work in high-intensity magnetic field, especially pacify
Near motor, the high-intensity magnetic field by motor is interfered and be can not work normally.
Mostly existing leg type correction is using physical method, and the variation of leg type will go to observe by naked eyes, while being instructed in dancing
Practice, in the rehabilitation of leg, all there has been no the leg orthoses or supplementary instrument that combine angular transducer, the present invention provides a kind of angle
Degree sensor can be used for thigh shank angle measurement, improves angle-measurement accuracy, reduces the influence of temperature and high-intensity magnetic field.
Summary of the invention
It is an object of the invention to: a kind of angular transducer for leg angle measurement is provided, solves and is rectified in leg type
Just, by visually observing leg type angle change inaccuracy, environment temperature and high-intensity magnetic field to survey in dance training and leg rehabilitation
Amount result leads to the problem of interference and leads to error, can be applied to leg type correction, dance training and rehabilitation etc..
The technical solution adopted by the invention is as follows:
A kind of angular transducer for leg angle measurement, it is characterised in that: include:
First circuit board: for generating first angle signal and the first temperature signal at thigh, and first angle is believed
Number and the first temperature signal be transmitted to single-chip microcontroller；
Second circuit board: for generating second angle signal and second temperature signal at shank, and second angle is believed
Number and second temperature signal be transmitted to single-chip microcontroller；
Single-chip microcontroller: it for handling first angle signal, second angle signal, the first temperature signal, second temperature signal, obtains
To final angle value.
Further, a kind of angular transducer for leg angle measurement according to claim 1, feature exist
In: the first circuit board and second circuit board respectively include one and incude for incuding the angle that leg angle is connected with single-chip microcontroller
Part further includes the temperature-compensation circuit being connected with single-chip microcontroller, for measuring the environment temperature at thigh and shank, and will
Temperature signal is converted to electric signal and is transmitted to single-chip microcontroller progress data processing.
Further, a kind of angular transducer for leg angle measurement according to claim 2, feature exist
In: the angle induction part includes the rotation axis for following first circuit board or second circuit board to rotate, rotation axis is followed to rotate
Driving gear, follow sliding tooth wheel rotate first measurement gear, follow the first measurement gear rotate second measurement gear,
Magnet, hot-wire coil, measuring coil the induced electromotive force variation of corresponding placement with magnet that gear is coupled are measured with second
Inductive sensing chip.
Further, a kind of angular transducer for leg angle measurement according to claim 3, feature exist
In: the gear ratio of the driving gear and the first measurement gear is 4:1.
Further, a kind of angular transducer for leg angle measurement according to claim 3, feature exist
It further include that act on driving gear axial in the radial direction towards rotation at least one spring in: the angle induction part.
Further, a kind of angular transducer for leg angle measurement according to claim 2, feature exist
In: the temperature-compensation circuit includes two temperature sensors, the amplifying circuit and and amplifying circuit that are connected with temperature sensor
Connected filter circuit, a temperature sensor are located at first circuit board, another temperature sensor is located at second circuit board, temperature
Degree sensor by environment temperature be converted to electric signal by amplifying circuit enhanced processing and filter circuit except making an uproar processing, obtain
Final temperature signal is transmitted to single-chip microcontroller and carries out data processing.
Further, a kind of angular transducer for leg angle measurement according to claim 1, feature exist
In: it further include a display screen and rechargeable battery, display screen is used for displays temperature and angle-data, charging electricity by single-chip microcontroller control
Pond is that device each section is powered.
Further, a kind of angular transducer for leg angle measurement according to claim 1, feature exist
In: it further include key part, key part is controlled by single-chip microcontroller, is included at least three keys and is realized the reset of control angle, device
The function of switch and the communication of single-chip microcontroller and host computer.
Further, a kind of angular transducer for leg angle measurement according to claim 1, feature exist
In: the single-chip microcontroller is communicated by wireless telecommunications and host computer.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1. the present invention is in such a way that two circuit boards combine, angle and temperature at a measurement thigh, a measurement
Angle and temperature at shank measure angle signal temperature-compensation circuit by angle induction part respectively and measure temperature signal, by two
A angle signal and two temperature signals send single-chip microcontroller to, and single-chip microcontroller carries out data processing again, obtain thigh and shank internode
Angle value can accurately obtain leg type angle-data, keep the training of leg and rehabilitation more convenient effectively.
2. the gear ratio of the driving gear and the first measurement gear is 4:1, the precision of angle measurement can be effectively improved.
3. the temperature induction part point includes at least one spring arrangement, the driving gear radial direction axial towards rotation is acted on
On direction, hysteresis error caused by reducing driving gear and measuring the clearance between gear and significantly reduce thus.
4. the present invention uses inductive sensing chip, influence of the environment medium-high magnetic field to angle value can be effectively avoided.
5. the present invention includes display module, can real-time display angle signal, and single-chip microcontroller has memory function, can remember
Recall historical point view data, data comparison can be carried out, can effectively adjust embodiment.
6. the present invention includes temperature-compensation circuit, the temperature signal in environment can be measured, the energy in process angle signal
The interference for effectively eliminating environment, the angle value made are more accurate.
7. being controlled the invention also includes key part by single-chip microcontroller, resetted including at least three keys realization control angles,
The function that device switch and single-chip microcontroller and host computer communicate, can conveniently adjust the angle and control single chip computer and host computer
Communication.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is structure of the invention schematic block diagram
Fig. 2 is angle induction part schematic block diagram
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
A kind of angular transducer for leg angle measurement, using the execution of single-chip microcontroller control angle sensor parts
And the processing of signal is carried out, angle induction part causes gear to rotate by the rotation of circuit board, so as to cause magnets magnetic fields
Variation, changes of magnetic field cause the variation of hot-wire coil induced electromotive force, and inductive sensing chip measures the variation of induced electromotive force
Generation angle signal is converted to electric signal and is transmitted to single-chip microcontroller, and temperature-compensation circuit measures environment temperature and temperature signal is converted to electricity
Signal is transmitted to single-chip microcontroller, and single-chip microcontroller combination angle signal and temperature signal carry out data processing and obtain final angle value, show
Screen display angle-data, key can be reset, communicate, the operation of power on/off, solve in leg type correction, dance training and leg
Interference generated to measurement result by visually observing leg type angle change inaccuracy, environment temperature and high-intensity magnetic field in portion's rehabilitation and
The problem of leading to error.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
Such as Fig. 1, in the application of leg type correction, a kind of angular transducer for leg angle measurement includes the first circuit
Plate: for generating first angle signal and the first temperature signal at thigh, and by first angle signal and the first temperature signal
It is transmitted to single-chip microcontroller；Second circuit board: for generating second angle signal and second temperature signal at shank, and by second angle
Signal and second temperature signal are transmitted to single-chip microcontroller；Single-chip microcontroller: for handling first angle signal, second angle signal, the first temperature
Signal, second temperature signal are spent, final angle value is obtained.First circuit board and second circuit board respectively include one for incuding
The angle induction part that leg angle is connected with single-chip microcontroller.Further include the temperature-compensation circuit being connected with single-chip microcontroller, is used for
Environment temperature is measured, and temperature signal is converted into electric signal and is transmitted to single-chip microcontroller progress data processing, temperature-compensation circuit includes
Two temperature sensors, the amplifying circuit being connected with temperature sensor and the filter circuit being connected with amplifying circuit, a temperature
Sensor is located at first circuit board, another temperature sensor is located at second circuit board, and temperature sensor converts environment temperature
For electric signal by amplifying circuit enhanced processing and filter circuit except making an uproar processing, obtain final temperature signal and be transmitted to single-chip microcontroller
Carry out data processing.It further include a display screen and rechargeable battery, display screen is used for displays temperature and angle by single-chip microcontroller control
Data, rechargeable battery are that device each section is powered.It further include key part, key part is controlled by single-chip microcontroller, is at least wrapped
It includes three keys and realizes that control angle resets, device switchs and the function of single-chip microcontroller and host computer communication.It further include two bandages,
For angular transducer to be fixed on thigh and lower leg portion.
Wherein, including a shell covers entire sensor, and shell includes four parts: first circuit board, the first circuit
The angle induction part of plate, second circuit board, second circuit board angle induction part, first circuit board is fixed on outside thigh
Side, second circuit board are fixed on small leg outer side, and first circuit board is connect with second circuit board by mechanical rotating shaft, can carry out front and back
Rotation, single-chip microcontroller, display screen and key are placed on first circuit board, and temperature-compensation circuit and rechargeable battery are placed on second circuit
On plate, one of temperature sensor is in first circuit board, another sensor is in second circuit board, the angle of first circuit board
Induction part is located at the right side of first circuit board and second circuit board junction, and the angle induction part of second circuit board is located at the
The left side of one circuit board and second circuit board junction, bandage are located on the shell of first circuit board and second circuit board.
Such as Fig. 2, the angle induction part includes the rotation axis for following first circuit board or second circuit board to rotate, follows
The driving gear of rotation axis rotation, follows the of the rotation of the first measurement gear at the first measurement gear for following sliding tooth wheel to rotate
Two measurement gears, magnet, the hot-wire coil of corresponding placement, measurement hot-wire coil sense with magnet being coupled with the second measurement gear
The inductive sensing chip for answering electromotive force to change.
Wherein, rotation axis with driving gear be connected, driving gear with first measurement gear be connected, first measure gear and
Second measurement gear is connected, and hot-wire coil is wanted to connect with inductive sensing chip, inductive sensing chip and first circuit board
Single-chip microcontroller connection, driving gear rotated according to the rotation of rotation axis, so as to cause first measurement gear rotation, Jin Eryin
The rotation of the second measurement gear is played, the rotation of the second measurement gear causes the changes of magnetic field of coupled magnet, changes of magnetic field
Cause the variation of the induced electromotive force of hot-wire coil, inductive sensing chip measures the variation of hot-wire coil induced electromotive force and turns
It turns to electric signal and is transmitted to single-chip microcontroller progress data processing, the gear ratio that the driving gear and first measure gear is 4:1.Angle
Induction part further includes that act on driving gear axial in the radial direction towards rotation at least one spring, first circuit board and the
The shell of two circuit boards respectively includes a bandage, for angular transducer to be fixed on leg.
So that entire angular transducer is powered into working condition by pressing switch key, presses reset key, carry out angle
Degree resets operation, and angular transducer is fixed on thigh and shank side by bandage, and first circuit board is fixed at thigh, the
Two circuit boards are fixed at shank.Angle induction part causes rotation axis to rotate by the rotation of circuit board, and rotation axis rotation is led
The rotation of sliding tooth wheel is caused, to drive the rotation of measurement gear, and then magnets magnetic fields is caused to change, changes of magnetic field causes live wire
The variation of induced electromotive force is enclosed, the variation that inductive sensing chip measures induced electromotive force generates angle signal and is converted to electric signal
It is transmitted to single-chip microcontroller, temperature-compensation circuit, which measures environment temperature temperature signal is converted to electric signal, is transmitted to single-chip microcontroller, single-chip microcontroller knot
It closes angle signal and temperature signal and carries out data processing and obtain final angle value, display screen angles of display data, key can be into
Row reset, communication, the operation of power on/off, single-chip microcontroller have memory function, can save historical data, can be carried out pair of angle change
Than analysis, to formulate more effective solution.
Wherein, single-chip microcontroller selects STM32F103, and temperature sensor selects AD590, and inductive sensing chip is selected
LDC1000。
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. a kind of angular transducer for leg angle measurement, it is characterised in that: include:
First circuit board: for generating first angle signal and the first temperature signal at thigh, and by first angle signal and
First temperature signal is transmitted to single-chip microcontroller:
Second circuit board: for generating second angle signal and second temperature signal at shank, and by second angle signal and
Second temperature signal is transmitted to single-chip microcontroller；
Single-chip microcontroller: it for handling first angle signal, second angle signal, the first temperature signal, second temperature signal, obtains most
Whole angle value.
2. a kind of angular transducer for leg angle measurement according to claim 1, it is characterised in that: described first
Circuit board and second circuit board respectively include one for incuding the angle induction part that leg angle is connected with single-chip microcontroller, further include
One temperature-compensation circuit being connected with single-chip microcontroller turns for measuring the environment temperature at thigh and shank, and by temperature signal
It is changed to electric signal and is transmitted to single-chip microcontroller progress data processing.
3. a kind of angular transducer for leg angle measurement according to claim 2, it is characterised in that: the angle
Induction part include the rotation axis for following first circuit board or second circuit board to rotate, the driving gear for following rotation axis to rotate,
It follows the first measurement gear of sliding tooth wheel rotation, the second measurement gear for following the first measurement gear to rotate, measured with second
The inductance type that hot-wire coil, the measurement hot-wire coil induced electromotive force of magnet, placement corresponding with magnet that gear is coupled change
Sensor chip.
4. a kind of angular transducer for leg angle measurement according to claim 3, it is characterised in that: the driving
The gear ratio of gear and the first measurement gear is 4:1.
5. a kind of angular transducer for leg angle measurement according to claim 3, it is characterised in that: the angle
Induction part further includes that act on driving gear axial in the radial direction towards rotation at least one spring.
6. a kind of angular transducer for leg angle measurement according to claim 2, it is characterised in that: the temperature
Compensation circuit includes two temperature sensors, the amplifying circuit being connected with temperature sensor and the filtered electrical being connected with amplifying circuit
Road, a temperature sensor are located at first circuit board, another temperature sensor is located at second circuit board, and temperature sensor is by ring
Border temperature transition is electric signal by the enhanced processing of amplifying circuit and filter circuit except making an uproar processing, obtains final temperature signal
It is transmitted to single-chip microcontroller and carries out data processing.
7. a kind of angular transducer for leg angle measurement according to claim 1, it is characterised in that: further include one
A display screen and rechargeable battery, display screen are used for displays temperature and angle-data by single-chip microcontroller control, and rechargeable battery is that device is each
Part is powered.
8. a kind of angular transducer for leg angle measurement according to claim 1, it is characterised in that: further include by
Key section, key part are controlled by single-chip microcontroller, are included at least three keys and are realized that control angle resets, device switchs and single-chip microcontroller
With the function of host computer communication.
9. a kind of angular transducer for leg angle measurement according to claim 1, it is characterised in that: the monolithic
Machine is communicated by wireless telecommunications and host computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811127361.7A CN109259769A (en) | 2018-09-26 | 2018-09-26 | A kind of angular transducer for leg angle measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811127361.7A CN109259769A (en) | 2018-09-26 | 2018-09-26 | A kind of angular transducer for leg angle measurement |
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| Publication Number | Publication Date |
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| CN109259769A true CN109259769A (en) | 2019-01-25 |
Family
ID=65197807
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811127361.7A Withdrawn CN109259769A (en) | 2018-09-26 | 2018-09-26 | A kind of angular transducer for leg angle measurement |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111436938A (en) * | 2020-04-30 | 2020-07-24 | 厦门中翎易优创科技有限公司 | Limb swelling monitoring device and method |
| WO2020173336A1 (en) * | 2019-02-27 | 2020-09-03 | Conzian Ltd. | System and method for rehabilitation |
| CN113804098A (en) * | 2021-06-25 | 2021-12-17 | 北京正源挤扩技术开发中心 | Measuring device and measuring method of rotation angle of extrusion and expansion machine |
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Application publication date: 20190125 |
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| WW01 | Invention patent application withdrawn after publication |