CN109839058A - A kind of contactless inductance type measurement angle device and its measurement method for thrombelastogram instrument - Google Patents
A kind of contactless inductance type measurement angle device and its measurement method for thrombelastogram instrument Download PDFInfo
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- CN109839058A CN109839058A CN201711192160.0A CN201711192160A CN109839058A CN 109839058 A CN109839058 A CN 109839058A CN 201711192160 A CN201711192160 A CN 201711192160A CN 109839058 A CN109839058 A CN 109839058A
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- 229910001751 gemstone Inorganic materials 0.000 claims abstract description 7
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- 210000004369 blood Anatomy 0.000 description 6
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Abstract
It is an object of the invention to disclose a kind of non-contacting inductive measurement angle device and its measurement method for thrombelastogram instrument, it includes rotation section and stationary part, it is provided with detection unit in the stationary part, is connected by pivot with jewel bearing single-point between the rotation section and stationary part；Compared with prior art, since the frictional force between rotation section and stationary part can be ignored, thus it can detecte the rotation that small power generates；The sensor resolution of detection unit can achieve 17, therefore angular resolution can achieve 0.0027 degree, can also detect to atomic small angle change；Meanwhile the labyrinth for not needing to adjust is installed, and only it need to guarantee that level makes to maintain gap between rotation section and stationary part, structure is simple, and it is very practical, it achieves the object of the present invention.
Description
Technical field
The present invention relates to a kind of non-contacting inductive measurement angle device and its measurement method, in particular to one kind is suitable for
The non-contacting inductive measurement angle device for thrombelastogram instrument and its measurement that thrombelastogram detects in blood analysis
Method.
Background technique
Thrombelastogram instrument (TEG) is a kind of solidifying to monitor from the entire dynamic process such as platelet aggregation, blood coagulation and fibrinolytic
The analyzer of blood process.
The physical characteristic of blood clot is monitored based on the principle that a static cylindrical cup for filling blood, with lesser angle
Spend low speed rotation, the measuring rod being immersed in blood sample by one monitors the movement of blood sample.Fibrin platelet compound
After cylindrical cup and measuring rod are sticked together, cylindrical cup, which rotates generated rotary force, can be transferred to the measurement in blood sample
Bar.The intensity of fibrin-platelet compound can influence the amplitude of measuring rod movement, so that strong blood clot can make to measure
The movement of bar and the movement of cylindrical cup it is synchronous carry out.Therefore, the intensity of the motion amplitude of measuring rod and established blood clot
There is direct relation.When blood clot bounces back or dissolves, the releasing that is coupled of measuring rod and blood clot, the movement of cylindrical cup is no longer passed
Measuring rod is passed, the rotation of measuring rod is detected by sensor.
In above-mentioned measurement process, the stress that blood viscosity variation generates is very small, the angle change of generation also very little, institute
There are 2 key points: 1, the smallest frictional force with detection；2, high-precision angular resolution.
Current existing detection mode is strain-type or magnetic field detection；But strain gauge transducer course of work itself can
Stress is introduced, testing result can be had an impact, and very high to the required precision of mechanical material.
And magnetic field detection, resolution ratio are low, interfere vulnerable to extraneous magnetosonic.
Tested non electrical quantity is such as displaced by inductance type transducer using electromagnetic induction principle, pressure, flow, vibration are converted into
The variation of self-induction of loop amount L or mutual induction amount M, then exported by the variable quantity that measuring circuit is converted to voltage or electric current.Inductance type passes
The advantages that sensor has structure simple, reliable operation, and measurement accuracy is high, zero point stability, output power is larger.But it is existing
Inductance type transducer is all mainly using automatic control system, machining and to measure in the relatively large equipment such as industry, small
It is not applied substantially on the medical instrument of type.
It is accordingly required in particular to a kind of for the non-contacting inductive measurement angle device of thrombelastogram instrument and its measurement side
Method, it is above-mentioned existing to solve the problems, such as.
Summary of the invention
The purpose of the present invention is to provide a kind of non-contacting inductive measurement angle device for thrombelastogram instrument and
Its measurement method can reduce the additional friction introduced in angle measurement in view of the deficiencies of the prior art, eliminate external environment pair
The influence of angular measurement improves the precision of measurement, reduces the complexity of mechanical structure, makes to install and debug simpler.
Technical problem solved by the invention can be realized using following technical scheme:
In a first aspect, the present invention provides a kind of non-contacting inductive measurement angle device for thrombelastogram instrument, feature
It is, it includes rotation section and stationary part, and inductance type detection unit is provided in the stationary part, and institute is corresponded on rotation section
The region for stating inductance type detection unit is provided with induction region, between the rotation section and stationary part by way of single-contact
It is connected, gap is maintained between the rotation section and the stationary part, guarantees do not have frictional force between rotation section and stationary part.
In one embodiment of the invention, it is realized between the rotation section and stationary part by pivot and jewel bearing single
Point connection, to guarantee to generate the smallest frictional force between rotation section and stationary part.
Further, the gap kept between the rotation section and the stationary part is 0.2-1.5mm.
In one embodiment of the invention, the rotation section is a rotor, and the stationary part is a stator, the stator
On be provided with inductance type detection unit, the region of inductance type detection unit is provided with induction region on rotor, it is described
Rotor is fixed on pivot by a rotor field spider, and the bottom of the rotor field spider is connected with rotation measuring bar.
Further, the sectional area of the bottom end lower part of the rotation measuring bar is polygon, the bottom end of the rotation measuring bar
The sectional area on top is greater than the sectional area of the bottom end lower part of the rotation measuring bar.
Further, the bottom end side of the rotation measuring bar is inclined-plane with a slope, and the gradient is 2-6 degree.
Further, the sectional area of the bottom end lower part of the rotation measuring bar is triangle.
In one embodiment of the invention, the inductance type detection unit connects a control circuit board, passes through control electricity
The data of road plate output measurement.
Second aspect, the present invention provide a kind of non-contacting inductive measurement angle measurement side for thrombelastogram instrument
Method, which is characterized in that it includes the following steps:
(1) detection of rotation measuring bar generates the small angle variation of 0-15 degree in Blood Coagulation Process under the action of minimal stress；
(2) rotation measuring bar drives the induction region rotation of the rotation section of top；
(3) the inductance type detection unit of the induction region of rotation section and stationary part incudes mutually the angular transition rotation into number
Signal output.
In one embodiment of the invention, it is realized between the rotation section and stationary part by pivot and jewel bearing single
Point is connected, to guarantee to generate the smallest frictional force between rotation section and stationary part.
In one embodiment of the invention, gap is maintained between the rotation section and the stationary part, guarantees rotation
There is no frictional force between portion and stationary part.
Further, the gap kept between the rotation section and the stationary part is 0.2-1.5mm, guarantees the accurate of measurement
Rate.
In one embodiment of the invention, the rotation section is a rotor, and the stationary part is a stator, the stator
On be provided with inductance type detection unit, the region of inductance type detection unit is provided with induction region on rotor, it is described
Rotor is fixed on pivot by a rotor field spider, and the bottom of the rotor field spider is connected with rotation measuring bar.
Further, the sectional area of the bottom end lower part of the rotation measuring bar is polygon, the bottom end of the rotation measuring bar
The sectional area on top is greater than the sectional area of the bottom end lower part of the rotation measuring bar.
Further, the bottom end side of the rotation measuring bar is inclined-plane with a slope, and the gradient is 2-6 degree.
Further, the sectional area of the bottom end lower part of the rotation measuring bar is triangle.
In one embodiment of the invention, the inductance type detection unit connects a control circuit board, passes through control electricity
The data of road plate output measurement.
Non-contacting inductive measurement angle device and its measurement method for thrombelastogram instrument of the invention, and it is existing
Technology is compared, due to the single-point connection type between rotation section and stationary part makes the frictional force between rotation section and stationary part can be with
Ignore, thus can detecte the rotation that small power generates；Meanwhile the sensor resolution of inductance type detection unit can achieve
17, therefore angular resolution can achieve 0.0027 degree, can also detect to atomic small angle change；Meanwhile it installing not
The labyrinth of adjustment in need only need to guarantee that level makes to maintain gap between rotation section and stationary part, and structure is simple, very real
With achieving the object of the present invention.
The features of the present invention sees the detailed description of the drawings of the present case and following preferable embodiment and obtains clearly
Solution.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the non-contacting inductive measurement angle device for thrombelastogram instrument of the invention；
Fig. 2 is the circuit diagram of thrombelastogram instrument of the invention；
Fig. 3 is the structural schematic diagram of rotation section of the invention or stationary part；
Fig. 4 is the structural schematic diagram of rotation measuring bar of the invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Embodiment 1
As depicted in figs. 1 and 2, the non-contacting inductive measurement angle device for thrombelastogram instrument of the invention, it includes
Rotation section 10 and stationary part 20 are provided with inductance type detection unit 30 in stationary part 20, and inductance type is corresponded on rotation section 10
The region of detection unit 30 is provided with induction region 12, is connected by way of single-contact between rotation section 10 and stationary part 20
It connects, gap is maintained between rotation section 10 and stationary part 20, guarantee there is no frictional force between rotation section 10 and stationary part 20.
Realize that single-point connects with jewel bearing 50 by pivot 40 between rotation section 10 and stationary part 20, to guarantee rotation section
The smallest frictional force is generated between 10 and stationary part 20.
The gap kept between rotation section 10 and stationary part 20 is 0.2-1.5mm, guarantees the induction region 12 of rotation section 10
The intensity incuded mutually with the inductance type detection unit 30 of stationary part 20, it is ensured that the accuracy rate of measurement.
In the present embodiment, rotation section 10 is a rotor, and stationary part 20 is a stator, is provided with inductance type on the stator
Detection unit 30, the region on the rotor corresponding to inductance type detection unit 30 are provided with induction region 12, the rotor
It is fixed on pivot 40 by a rotor field spider 11, the bottom of the rotor field spider 11 is connected with rotation measuring bar 60.
The sectional area of 61 lower part 63 of bottom end of rotation measuring bar 60 is polygon, 61 top 62 of bottom end of rotation measuring bar 60
Sectional area be greater than rotation measuring bar 60 61 lower part 63 of bottom end sectional area.
61 side of bottom end of rotation measuring bar 60 is inclined-plane 64 with a slope, and the gradient is 2-6 degree.
Preferably, the sectional area of 61 lower part 63 of bottom end of rotation measuring bar 60 is triangle；Certainly, rotation measuring bar 60
The sectional area of 61 lower part 63 of bottom end may be quadrangle, pentagon or hexagon.
The inductance type detection unit 30 connects a control circuit board 70, passes through the number of the output measurement of control circuit board 70
According to.
Non-contacting inductive measurement angle measurement method for thrombelastogram instrument of the invention, it includes following step
It is rapid:
(1) detection of rotation measuring bar 60 generates 0-15 degree in Blood Coagulation Process low-angle under the action of minimal stress becomes
Change；
(2) rotation measuring bar 60 drives the induction region 12 of the rotation section 10 of top to rotate；
(3) the inductance type detection unit 30 of the induction region 12 of rotation section 10 and stationary part 20 incudes mutually and the angle of rotation is turned
Change digital signal output into.
In the present embodiment, likewise, being realized between rotation section 10 and stationary part 20 by pivot 40 and jewel bearing 50
Single-point is connected, to guarantee to generate the smallest frictional force between rotation section 10 and stationary part 20.
Gap is maintained between rotation section 10 and stationary part 20, guarantees not rub between rotation section 10 and stationary part 20
Power.
The gap kept between rotation section 10 and stationary part 20 is 0.2-1.5mm, guarantees the induction region 12 of rotation section 10
The intensity incuded mutually with the inductance type detection unit 30 of stationary part 20, it is ensured that the accuracy rate of measurement.
Rotation section 10 is a rotor, and stationary part 20 is a stator, is provided with inductance type detection unit 30 on the stator,
Region on the rotor corresponding to inductance type detection unit 30 is provided with induction region 12(referring to Fig. 3), the rotor passes through
One rotor field spider 11 is fixed on pivot 40, and the bottom of the rotor field spider 11 is connected with rotation measuring bar 60.
Referring to fig. 4, the sectional area of 61 lower part 63 of bottom end of rotation measuring bar 60 is polygon, the bottom end of rotation measuring bar 60
The sectional area on 61 tops 62 is greater than the sectional area of 61 lower part 63 of bottom end of rotation measuring bar 60.
61 side of bottom end of rotation measuring bar 60 is inclined-plane 64 with a slope, and the gradient is 2-6 degree.
Preferably, the sectional area of 61 lower part 63 of bottom end of rotation measuring bar 60 is triangle；Certainly, rotation measuring bar 60
The sectional area of 61 lower part 63 of bottom end may be quadrangle, pentagon or hexagon.
The inductance type detection unit 30 connects a control circuit board 70, passes through the number of the output measurement of control circuit board 70
According to.
Non-contacting inductive measurement angle device of the invention is mainly used in thrombelastogram instrument, inductance type detection unit
30 with stationary part 20 be it is integrated, by the mutual induction with induction region 12 on rotation section 10, measure angle change；Inductance
The area of formula detection unit 30 and induction region 12 should be not less than the circular area of diameter 35mm, atomic small to guarantee to sense
Angle change.
The shape of induction region 12 includes but is not limited to round, ellipse and polygon, the shape of inductance type detection unit 30
Shape includes but is not limited to round, ellipse and polygon, and the shape of induction region 12 and the shape of inductance type detection unit 30 can
With identical or not identical；Preferably, induction region 12 is aligned with 30 center of inductance type detection unit, the shape of induction region 12
Shape with inductance type detection unit 30 is circular ring shape.
Meanwhile the single-point connection type between rotation section 10 and stationary part 20 makes rubbing between rotation section 10 and stationary part 20
Wiping power can ignore, thus can detecte the rotation that small power generates.
The sensor resolution that inductance type detection unit 30 uses can achieve 17, therefore angular resolution can achieve
0.0027 degree, atomic small angle change can also be detected.
Meanwhile the non-contacting inductive measurement angle device for thrombelastogram instrument of the invention is installed and is not needed
The labyrinth of adjustment only need to guarantee that level makes to maintain gap between rotation section 10 and stationary part 20.
Non-contacting inductive measurement angle device of the invention is mainly used in thrombelastogram instrument (referring to fig. 2), according to
The setting of the sense channel of thrombelastogram instrument can correspond to and increase non-contacting inductive measurement angle device of the invention, such as
The sense channel of thrombelastogram instrument is 4, corresponding that 4 non-contacting inductive measurement angle dresses of the invention can be arranged
It sets, the inductance type detection unit 30 of each non-contacting inductive measurement angle device of the invention is just connected to a control circuit
On plate 70, pass through the data of the output measurement of control circuit board 70.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention, the claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (17)
1. a kind of non-contacting inductive measurement angle device for thrombelastogram instrument, which is characterized in that it includes rotation section
And stationary part, inductance type detection unit is provided in the stationary part, and the inductance type detection unit is corresponded on rotation section
Region be provided with induction region, be connected by way of single-contact between the rotation section and stationary part, the rotation
Gap is maintained between portion and the stationary part, guarantees do not have frictional force between rotation section and stationary part.
2. non-contacting inductive measurement angle device as described in claim 1, which is characterized in that the rotation section and stationary part
Between by pivot and jewel bearing realize that single-point connects.
3. non-contacting inductive measurement angle device as claimed in claim 2, which is characterized in that the rotation section with it is described quiet
The gap kept between stop is 0.2-1.5mm.
4. non-contacting inductive measurement angle device as described in claim 1, which is characterized in that the rotation section is one turn
Son, the stationary part are a stator, are provided with inductance type detection unit on the stator, and inductance type is corresponded on rotor and is detected
The region of unit is provided with induction region, and the rotor is fixed on pivot by a rotor field spider, the bottom of the rotor field spider
Portion is connected with rotation measuring bar.
5. non-contacting inductive measurement angle device as claimed in claim 4, which is characterized in that the bottom of the rotation measuring bar
The sectional area for holding lower part is polygon, and the sectional area on the bottom end top of the rotation measuring bar is greater than the bottom of the rotation measuring bar
Hold the sectional area of lower part.
6. non-contacting inductive measurement angle device as claimed in claim 4, which is characterized in that the bottom of the rotation measuring bar
End side surface is inclined-plane with a slope, and the gradient is 2-6 degree.
7. such as non-contacting inductive measurement angle device described in claim 5 or 6, which is characterized in that the rotation measuring bar
Bottom end lower part sectional area be triangle.
8. non-contacting inductive measurement angle device as described in claim 1, which is characterized in that the inductance type detection unit
A control circuit board is connected, the data of control circuit board output measurement are passed through.
9. a kind of non-contacting inductive measurement angle measurement method for thrombelastogram instrument, which is characterized in that it includes such as
Lower step:
(1) detection of rotation measuring bar generates the small angle variation of 0-15 degree in Blood Coagulation Process under the action of minimal stress；
(2) rotation measuring bar drives the induction region rotation of the rotation section of top；
(3) the inductance type detection unit of the induction region of rotation section and stationary part incudes mutually the angular transition rotation into number
Signal output.
10. non-contacting inductive measurement angle measurement method as claimed in claim 9, which is characterized in that the rotation section and
Realize that single-point is connected with jewel bearing by pivot between stationary part.
11. non-contacting inductive measurement angle measurement method as claimed in claim 9, which is characterized in that the rotation section with
Gap is maintained between the stationary part.
12. non-contacting inductive measurement angle measurement method as claimed in claim 11, which is characterized in that the rotation section with
The gap kept between the stationary part is 0.2-1.5mm.
13. non-contacting inductive measurement angle measurement method as claimed in claim 9, which is characterized in that the rotation section is
One rotor, the stationary part are a stator, are provided with inductance type detection unit on the stator, inductance type is corresponded on rotor
The region of detection unit is provided with induction region, and the rotor is fixed on pivot by a rotor field spider, the rotor field spider
Bottom be connected with rotation measuring bar.
14. non-contacting inductive measurement angle device as claimed in claim 13, which is characterized in that the rotation measuring bar
The sectional area of bottom end lower part is polygon, and the sectional area on the bottom end top of the rotation measuring bar is greater than the rotation measuring bar
The sectional area of bottom end lower part.
15. non-contacting inductive measurement angle device as claimed in claim 13, which is characterized in that the rotation measuring bar
Bottom end side is inclined-plane with a slope, and the gradient is 2-6 degree.
16. the non-contacting inductive measurement angle device as described in claims 14 or 15, which is characterized in that the rotation measuring
The sectional area of the bottom end lower part of bar is triangle.
17. non-contacting inductive measurement angle measurement method as claimed in claim 16, which is characterized in that the inductance type inspection
It surveys unit and connects a control circuit board, pass through the data of control circuit board output measurement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711192160.0A CN109839058A (en) | 2017-11-24 | 2017-11-24 | A kind of contactless inductance type measurement angle device and its measurement method for thrombelastogram instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711192160.0A CN109839058A (en) | 2017-11-24 | 2017-11-24 | A kind of contactless inductance type measurement angle device and its measurement method for thrombelastogram instrument |
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| CN109839058A true CN109839058A (en) | 2019-06-04 |
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