CN203107122U - Dynamic joint angle measuring device - Google Patents
Dynamic joint angle measuring device Download PDFInfo
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- CN203107122U CN203107122U CN 201220705625 CN201220705625U CN203107122U CN 203107122 U CN203107122 U CN 203107122U CN 201220705625 CN201220705625 CN 201220705625 CN 201220705625 U CN201220705625 U CN 201220705625U CN 203107122 U CN203107122 U CN 203107122U
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- gage beam
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Abstract
The utility model discloses a dynamic joint angle measuring device, comprising two measuring arms, a rotational connecting module and an angle measuring module. The dynamic joint angle measuring device is characterized in that one of the measuring arms is composed of a first fixed measuring arm and a first mobile measuring arm; the other measuring arm is composed of a second fixed measuring arm and a second mobile measuring arm; each mobile measuring arm is connected with the corresponding fixed measuring arm by a sliding connection structure, so that the mobile measuring arms are provided with a free degree to slide along the length direction of the measuring arms; the first mobile measuring arm is rotationally connected with the second mobile measuring arm by the rotational connecting module; and the angle measuring module is provided with an angle sensor which is used for measuring the included angle between the first mobile measuring arm and the second mobile measuring arm. By the dynamic joint angle measuring device, the dynamic posture measurement can be realized, the influence of a joint center offset on the angle measurement in the joint movement is effectively avoided, the parallel measurement is realized, and restraints of measuring instruments to joint movement of a measured person are reduced.
Description
Technical field
This utility model relates to a kind of angle measurement unit, is specifically related to a kind of dynamic joint angles measuring device that can realize that the dynamic posture of live body is measured.
Background technology
No matter be clinical medicine or motion analysis, the measurement of joint angles is all very important, and traditional measuring method comprises uses angle block gauge, and angle square is read owing to estimate by naked eyes in using, and degree of accuracy is difficult to assurance, and error is very big.
Measure for convenience and the raising certainty of measurement, electronics joint angles measuring device occurred, obtain angle and show reading by sensor.For example, Chinese invention patent application CN 102133102 A disclose a kind of electronic measuring device of measuring the live body joint angles, comprise fixed arm and cursor, one end of fixed arm and cursor is connected by rotating shaft, also being set with one on fixed arm is the annular chute in the center of circle with the rotating shaft, be provided with a roller in the described chute, described roller is fixedlyed connected with described cursor, in chute, be provided with position sensor, position sensor links to each other with a controller, also be provided with digital display screen on the fixed arm, described digital display screen is connected with controller.
Require when this electronic measuring device is measured fixed arm is fixed on the one side limbs of joint, linear joint opposite side limbs are with cursor coupling back reading.But, because the characteristic of human synovial, and the mechanical hinge in ideal, have fixing rotating shaft, but along with joint motions change, shown in accompanying drawing 3, be the simplification view of joint motions, during motion, skew can appear in the joint motions center, at this moment, effectively changing appears in gage beam L1, L2 length.Therefore, when attempting that above-mentioned electronic measuring device is used for detection of dynamic, if fixed arm and cursor are individually fixed in both sides, joint limbs, because measuring device rotating shaft and joint motions center can't coincide, during motion, gage beam will produce skew or reverse on limbs, increase measurement error or even wrong the measurement; Allow the measured that motion is produced very strong restraint feeling simultaneously, influence the joint freely-movable.
Therefore, this class measuring device is generally used for the detection of (prone position, sitting posture etc.) certain joint angles under the anchor, is inconvenient to measure dynamic posture and changes as the joint angles under the actions such as walking, sit up, go upstairs.
How to provide that a kind of can to measure dynamic posture hypozygal angle and can avoid the skew of articulation center in joint motions be problem to be solved in the utility model to the joint angles measuring device of the influence of certainty of measurement.
Summary of the invention
Goal of the invention of the present utility model provides a kind ofly can be measured dynamic posture hypozygal angle and can avoid the skew of articulation center in joint motions to the joint angles measuring device of the influence of certainty of measurement.
To achieve the above object of the invention, the technical solution adopted in the utility model is: a kind of dynamic joint angles measuring device, comprise two gage beams, module is rotationally connected, Angle Measurement Module, one of them gage beam is made of the first fixation measuring arm and the first free gage beam, another gage beam is made of the second fixation measuring arm and the second free gage beam, be connected through sliding connection structure between each free gage beam and corresponding fixation measuring arm, make free gage beam have the degree of freedom that slides along the gage beam length direction, be rotationally connected through the module formation that is rotationally connected between the first free gage beam and the second free gage beam, described Angle Measurement Module has the angular transducer of measuring the angle between the first free gage beam and the second free gage beam.
In the technique scheme, owing to be provided with fixation measuring arm and the free gage beam of mutual slip, when limb motion, skew along with the joint motions center, effectively during the gage beam length variations, free gage beam can slide by the relative fixed gage beam, makes the length overall of gage beam change synchronously.Thereby, can not cause the skew of gage beam or reverse, guaranteed accuracy of measurement.
Further technical scheme, sliding connection structure between each free gage beam and corresponding fixation measuring arm is, fixation measuring arm one end is provided with the hole as slideway, free gage beam corresponding end embedded with this hole in and be slidingly connected with hole wall, be provided with back-moving spring between at the bottom of the end of free this end of gage beam and this hole.This sliding connection structure is realized convenient, and back-moving spring can guarantee accurately resetting of free gage beam, further avoids the distortion of gage beam in motor process, guarantees certainty of measurement.
In the technique scheme, the coefficient of elasticity of described back-moving spring is 20 Ns every meter (N/m).
Further technical scheme is provided with the data acquisition and the transmitter module that are connected with the outfan of angular transducer in the described Angle Measurement Module, cooperates with transmitter module with this data acquisition, is provided with the angle display module with radio receiver.This scheme makes the measurement result demonstration separate with measuring device, utilizes wireless transmission (for example bluetooth or other Radio Transmission Technology) that the result of angular transducer is shown on the angle display module of separation, is convenient to measure and reading.Particularly when carrying out continuous kinetic measurement, can guarantee accuracy and the real-time of reading.
In the technique scheme, be respectively equipped with fixing hole on the described first fixation measuring arm and the second fixation measuring arm.Available rubber straps etc. are fixed on the limbs.
Because technique scheme is used, this utility model compared with prior art has following advantage:
1. this utility model is embedded in two free gage beams in two fixation measuring arms by spring, in joint motions, when articulation center generation skew causes that the gage beam effective length changes, by being free to slide between two fixation measuring arms and the free gage beam, make it the movement of self adaptation articulation center, avoided the influence of the skew of articulation center in joint motions to measurement result.
2. this utility model separates the reading demonstration by data acquisition and transmitter module are set with measure portion, has made things convenient for measurement, has guaranteed the accuracy of reading, is particularly suitable for the kinetic measurement operation.
Description of drawings
Fig. 1 is this utility model structural representation among the embodiment.
Fig. 2 is that this utility model fixation measuring arm is connected partial enlarged drawing with free gage beam.
Fig. 3 is the simplification view of joint motions.
Wherein: 1, data acquisition and transmitter module; 2, fixing hole; 3, the first fixation measuring arm; 4, the first free gage beam; 5, angular transducer; 6, the module that is rotationally connected; 7, the second free gage beam; 8, the second fixation measuring arm.
The specific embodiment
Below in conjunction with drawings and Examples this utility model is further described:
Embodiment one: referring to illustrated in figures 1 and 2, a kind of dynamic joint angles measuring device, comprise two gage beams, module 6 is rotationally connected, Angle Measurement Module, one of them gage beam is made of the first fixation measuring arm 3 and the first free gage beam 4, another gage beam is made of the second fixation measuring arm 8 and the second free gage beam 7, be respectively equipped with fixing hole 2 on the described first fixation measuring arm 3 and the second fixation measuring arm 8, be connected through sliding connection structure between each free gage beam and corresponding fixation measuring arm, sliding connection structure is, fixation measuring arm one end is provided with the hole as slideway, free gage beam corresponding end embedded with this hole in and be slidingly connected with hole wall, be provided with back-moving spring between at the bottom of the end of free this end of gage beam and this hole, be rotationally connected through the module formation that is rotationally connected between the first free gage beam and the second free gage beam, described Angle Measurement Module comprises, measure the angular transducer 5 of the angle between the first free gage beam and the second free gage beam, the data acquisition and the transmitter module 1 that are connected with the outfan of angular transducer 5, data acquisition and transmitter module 1 are installed on one of them fixation measuring arm, by the wireless data of outwards launching in real time, cooperate with transmitter module with this data acquisition, be provided with the angle display module with radio receiver.
Two fixation measuring arms are fixed in both sides, joint limbs, and make gage beam parallel with the limbs link, in joint motions, when articulation center generation skew causes that the gage beam effective length changes, by being free to slide between two pairs of fixation measuring arms and the free gage beam, make it the movement of self adaptation articulation center, realize horizontal survey.
Claims (5)
1. dynamic joint angles measuring device, comprise two gage beams, module is rotationally connected, Angle Measurement Module, it is characterized in that: one of them gage beam is made of the first fixation measuring arm and the first free gage beam, another gage beam is made of the second fixation measuring arm and the second free gage beam, be connected through sliding connection structure between each free gage beam and corresponding fixation measuring arm, make free gage beam have the degree of freedom that slides along the gage beam length direction, be rotationally connected through the module formation that is rotationally connected between the first free gage beam and the second free gage beam, described Angle Measurement Module has the angular transducer of measuring the angle between the first free gage beam and the second free gage beam.
2. dynamic joint angles measuring device according to claim 1, it is characterized in that: the sliding connection structure between each free gage beam and corresponding fixation measuring arm is, fixation measuring arm one end is provided with the hole as slideway, free gage beam corresponding end is embedded in this hole and with hole wall and is slidingly connected, and is provided with back-moving spring between at the bottom of the end of free this end of gage beam and this hole.
3. dynamic joint angles measuring device according to claim 2, it is characterized in that: the coefficient of elasticity of described back-moving spring is 20 Ns every meter.
4. dynamic joint angles measuring device according to claim 1, it is characterized in that: be provided with the data acquisition and the transmitter module that are connected with the outfan of angular transducer in the described Angle Measurement Module, cooperate with transmitter module with this data acquisition, be provided with the angle display module with radio receiver.
5. dynamic joint angles measuring device according to claim 1 is characterized in that: be respectively equipped with fixing hole on the described first fixation measuring arm and the second fixation measuring arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705625 CN203107122U (en) | 2012-12-19 | 2012-12-19 | Dynamic joint angle measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705625 CN203107122U (en) | 2012-12-19 | 2012-12-19 | Dynamic joint angle measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN203107122U true CN203107122U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220705625 Expired - Fee Related CN203107122U (en) | 2012-12-19 | 2012-12-19 | Dynamic joint angle measuring device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107582319A (en) * | 2017-09-28 | 2018-01-16 | 北京联合大学 | A kind of intelligent massaging equipment |
| CN107913065A (en) * | 2017-12-08 | 2018-04-17 | 清华大学 | Three-dimensional joint angle measuring device |
| CN108519074A (en) * | 2018-04-24 | 2018-09-11 | 中国海底电缆建设有限公司 | A kind of dynamic adhesion formula dip measuring device and method |
| CN108618785A (en) * | 2017-03-21 | 2018-10-09 | 崔家鸣 | The active checking device postoperative for shoulder joint |
| CN109620653A (en) * | 2019-01-30 | 2019-04-16 | 南方科技大学 | Lower limb exoskeleton structure integrating self-adaptive knee joints and robot |
| CN109737865A (en) * | 2019-01-25 | 2019-05-10 | 百年旭康医疗器械有限公司 | A kind of universal single dof mobility brace angle measurement unit and its application method |
| CN116509380A (en) * | 2023-04-14 | 2023-08-01 | 江苏泰科博曼医疗器械有限公司 | Knee joint coordinate establishment device, method and system |
-
2012
- 2012-12-19 CN CN 201220705625 patent/CN203107122U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108618785A (en) * | 2017-03-21 | 2018-10-09 | 崔家鸣 | The active checking device postoperative for shoulder joint |
| CN107582319A (en) * | 2017-09-28 | 2018-01-16 | 北京联合大学 | A kind of intelligent massaging equipment |
| CN107913065A (en) * | 2017-12-08 | 2018-04-17 | 清华大学 | Three-dimensional joint angle measuring device |
| CN108519074A (en) * | 2018-04-24 | 2018-09-11 | 中国海底电缆建设有限公司 | A kind of dynamic adhesion formula dip measuring device and method |
| CN109737865A (en) * | 2019-01-25 | 2019-05-10 | 百年旭康医疗器械有限公司 | A kind of universal single dof mobility brace angle measurement unit and its application method |
| CN109620653A (en) * | 2019-01-30 | 2019-04-16 | 南方科技大学 | Lower limb exoskeleton structure integrating self-adaptive knee joints and robot |
| CN109620653B (en) * | 2019-01-30 | 2024-06-07 | 南方科技大学 | Lower limb exoskeleton structure fusing self-adaptive knee joint and robot |
| CN116509380A (en) * | 2023-04-14 | 2023-08-01 | 江苏泰科博曼医疗器械有限公司 | Knee joint coordinate establishment device, method and system |
| CN116509380B (en) * | 2023-04-14 | 2023-12-29 | 江苏泰科博曼医疗器械有限公司 | Knee joint coordinate establishment device, method and system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20151219 |
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| EXPY | Termination of patent right or utility model |