CN214560876U - Exoskeleton sole sensing system based on analog pressure sensor - Google Patents
Exoskeleton sole sensing system based on analog pressure sensor Download PDFInfo
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- CN214560876U CN214560876U CN202022863463.4U CN202022863463U CN214560876U CN 214560876 U CN214560876 U CN 214560876U CN 202022863463 U CN202022863463 U CN 202022863463U CN 214560876 U CN214560876 U CN 214560876U
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Abstract
The utility model discloses an ectoskeleton plantar sensing system based on analog pressure sensor relates to ectoskeleton device technical field to solve current ectoskeleton plantar sensing system bulky, the integrated level is not high, the poor problem of reliability. The ankle joint monitoring device comprises intelligent sensing shoes, pressure sensors, a sole heel structural plate, a sensing information acquisition plate, an acquisition plate shell and a connecting ankle joint structural part; pressure sensor installs in intelligent sensing shoes, and the sole is with the structural slab setting in one side of intelligent sensing shoes root, gathers the board casing and installs on the sole is with the structural slab, and sensing information gathers the board and installs in gathering the board casing, and sensing information gathers board and pressure sensor communication connection, connects the ankle joint structure and sets up on gathering the board casing, connects the ankle joint structure and is connected with ectoskeleton system. The sensing system is simple in structure, high in integration degree, high in structure and circuit reliability and stability, capable of improving flexibility and reliability of the whole system and high in practicability.
Description
Technical Field
The utility model relates to an ectoskeleton technical field especially relates to an ectoskeleton sole sensing system based on analog pressure sensor.
Background
Flexible exoskeletons have developed rapidly over the years, and the plantar sensing system is one of the most critical parts for the intended identification of exoskeleton movements. In order to improve the motion following capability of the exoskeleton, enhance the man-machine compatibility and overcome the defects that the exoskeleton cannot simultaneously consider gait recognition sensitivity and accuracy, a highly integrated plantar sensing system is required to be designed, and a shoe body structure, a binding structure, a sensor and an information acquisition system are integrally designed, so that the plantar sensing system is light and convenient to install. Once the sole sensing system is unreasonable in design, the exoskeleton is very heavy, the matching performance and the wearing comfort level of the human-computer are reduced, and the gait recognition effect of the exoskeleton is severely limited.
With the development of exoskeleton technology, especially for the requirements of volume, mass, ergonomics, gait recognition, assistance efficiency and the like, the flexible exoskeleton sole sensing system is urgently required to be developed towards the direction of integration, light weight, high reliability and comfort.
In recent years, the research on domestic flexible exoskeletons is just started, compared with international exoskeletons, the technical level is high, the engineering and practical degrees are low, and a great gap is left between the engineering and the practical use. The flexible exoskeleton sole sensing system developed in China is large in size, heavy in weight, complex in structure, low in integration level, poor in reliability, and high in wearing comfort and assistance efficiency.
SUMMERY OF THE UTILITY MODEL
The exoskeleton foot sole sensing system based on the analog pressure sensor integrates the pressure sensor and the information acquisition board together through the integrated design, and is integrated on shoes, so that the sensing shoes have compact structures, high integration level, strong unbalance loading resistance and difficult damage, and can conveniently realize the detection of foot sole force; the installation and the dismantlement are convenient simple, have improved the flexibility and the reliability of complete machine system.
In order to achieve the above object, the present invention provides the following technical solutions:
the exoskeleton foot sole sensing system based on the analog pressure sensor comprises intelligent sensing shoes, the pressure sensor, a foot heel structural plate, a sensing information acquisition plate, an acquisition plate shell and a connecting ankle joint structural member;
the pressure sensor is installed in the intelligent sensing shoes, the sole is in with the structural slab setting one side of intelligent sensing shoes root, it installs to gather the board casing the sole is with on the structural slab, the sensing information acquisition board is installed in gathering the board casing, the sensing information acquisition board with pressure sensor communication connection, it sets up to connect the ankle joint structure on gathering the board casing, it is connected with ectoskeleton system to connect the ankle joint structure.
The utility model provides a pressure sensor based on simulation formula pressure sensor's ectoskeleton sole sensing system installs in intelligent sensing shoes for the power of exerting when detecting the foot and trampling, the force that sensing information acquisition board can detect pressure sensor is received, and then transmits for ectoskeleton system. The mechanical structure and the sensing circuit are creatively integrated, the reliability and the working stability of the exoskeleton robot sole information sensing system are effectively improved, the service life of a communication line in the walking process is effectively prolonged in a communication mode of inserting and butting, the connecting ankle joint supporting structure is connected with a shoe through a connecting pin, the mounting is convenient and simple, and the freedom degree of the human ankle coronal plane is realized. The sensing system is simple in structure, high in integration degree, low in cost, high in structure and circuit reliability and stability, strong in unbalance loading resistance, not prone to damage, capable of conveniently achieving detection of foot bottom force, convenient and simple to install and disassemble, capable of improving flexibility and reliability of the whole system, and high in practicability.
Preferably, in the above technical solution, the intelligent sensing shoe comprises a bottom rubber layer and a top rubber layer;
the pressure sensor is arranged in the sensor groove, the signal wire is arranged in the signal wire groove, and the top rubber layer is fixedly connected with the bottom rubber layer.
Preferably, in the above technical solution, the pressure sensor includes a sole pressure sensor and a heel pressure sensor;
the sensor groove is divided into a sole sensor groove and a heel sensor groove, the sole pressure sensor is installed in the sole sensor groove, the heel pressure sensor is installed in the heel sensor groove, and a connecting wire between the sole pressure sensor and the heel pressure sensor is installed in the signal wire slot.
Preferably, in the above technical solution, the intelligent sensing shoe further comprises a middle rigid gasket;
the middle rigid gasket is fixedly arranged between the bottom rubber layer and the top rubber layer.
Preferably, in the above technical solution, the intelligent sensing shoe further comprises a human foot binding;
the human foot is bound and installed on the rigid gasket layer and penetrates through the top rubber layer upwards.
Preferably, in the above technical solution, the thickness of the bottom rubber layer is greater than the thickness of the top rubber layer.
Preferably, in the above technical solution, the sole pressure sensor is located on a plane higher than the heel pressure sensor.
Preferably, in the above technical solution, a thread passing hole is provided at one side of the sole heel structural plate facing the intelligent sensing shoe.
Preferably, in the above technical solution, the collecting plate housing is provided with a through hole for a connection line to pass through, and the connection line of the sole pressure sensor and the heel pressure sensor passes through the line passing hole and the through hole and is electrically connected to the sensing information collecting plate in the collecting plate housing.
Preferably, in the above technical scheme, a plurality of threaded holes are formed in the collecting plate shell, and the sensing information collecting plate is installed in the collecting plate shell through a plurality of threaded holes.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:
fig. 1 to 3 are schematic block diagrams of an exoskeleton sole sensing system based on an analog pressure sensor provided by the invention;
fig. 4 is a schematic view of a sensor recess and signal wire channel.
Reference numerals:
1-intelligent sensing shoes, 11-bottom rubber layer, 12-middle rigid gasket, 13-top rubber layer, 14-sole sensor groove, 15-heel sensor groove, 16-signal wire groove, 2-sole pressure sensor, 3-heel pressure sensor, 4-sole heel structural plate, 5-acquisition plate shell and 6-connecting ankle joint structural component.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1 and fig. 2, the exoskeleton sole sensing system based on the analog pressure sensor provided by the present invention comprises an intelligent sensing shoe 1, a pressure sensor, a sole heel structure plate 4, a sensing information collecting plate, a collecting plate shell 5 and a connecting ankle joint structure 6; pressure sensor installs in intelligent sensing shoes 1, and the sole is with structural slab 4 setting in one side of 1 root of intelligent sensing shoes, gathers board casing 5 and installs on the sole is with structural slab 4, and the sensing information gathers the board and installs in gathering board casing 5, and sensing information gathers board and pressure sensor communication connection, connects ankle joint structure 6 and sets up on gathering board casing 5, connects ankle joint structure 6 and exoskeleton system connection.
In the specific implementation:
the exoskeleton control needs to acquire the variation data of the dynamic plantar pressure of a person in the walking process. After the intelligent sensing shoes are connected into the exoskeleton system, when a human body is in a supporting state, the feet of the human body exert pressure on the pressure sensors of the soles, the output analog voltage of the pressure sensors also changes due to the pressure applied to the pressure sensors, the analog voltage is transmitted to the signal acquisition board of the soles, amplified by the operational amplifier, filtered by the filter and input to the singlechip with the AD converter, the analog signals are converted into digital signals, and the obtained digital signals are calculated according to the previous calibration coefficient to obtain the corresponding pressure value, so that the stage of the gait cycle of the human body is judged according to the pressure condition applied to the foot bottom parts, and efficient gait recognition is realized. The analog output pressure sensor used by the intelligent shoe has an output value of only a few millivolts and cannot be directly used for data acquisition and processing, so that the output signal of the sensor can meet the use requirement only by amplification. Because the sensor outputs small signals which are extremely easy to be interfered and unstable by the outside, firstly, the amplifier is required to have stronger common-mode voltage interference resistance, and the change of the pressure can be accurately and quickly reflected. And secondly, a stable and reliable current source is provided for the sensor, otherwise, the stability and the precision of the sensor are reduced due to the sensitivity change of the sensor caused by the voltage change.
Because the pressure on the surface of the sensor and the output voltage value of the operational amplifier are in a linear amplification relation, a digital signal is acquired through the acquisition board AD and is input and stored into the acquisition board singlechip. Before the exoskeleton system is connected, corresponding digital values output by the sensor under different pressure values are obtained through related instrument equipment and recorded. Taking ten values between 0kg of the pressure sensor and 200kg of the measuring range, such as 0kg, 20kg and 40kg … 180kg, recording corresponding digital values to obtain a calibration coefficient. In the actual use process, the linear error between the stress value and the output value of the sensor is less than 3%, the sensor is suitable for reflecting the stress state of the heel of the sole, and the signal response time is less than 10us, so that a smoother gait can be provided in an exoskeleton system.
The utility model provides a pressure sensor based on simulation formula pressure sensor's ectoskeleton sole sensing system installs in intelligent sensing shoes for the power of exerting when detecting the foot and trampling, the force that sensing information acquisition board can detect pressure sensor is received, and then transmits for ectoskeleton system. The mechanical structure and the sensing circuit are creatively integrated, the reliability and the working stability of the exoskeleton robot sole information sensing system are effectively improved, the service life of a communication line in the walking process is effectively prolonged in a communication mode of inserting and butting, the connecting ankle joint supporting structure is connected with a shoe through a connecting pin, the mounting is convenient and simple, and the freedom degree of the human ankle coronal plane is realized. The sensing system is simple in structure, high in integration degree, low in cost, high in structure and circuit reliability and stability, strong in unbalance loading resistance, not prone to damage, capable of conveniently achieving detection of foot bottom force, convenient and simple to install and disassemble, capable of improving flexibility and reliability of the whole system, and high in practicability.
As an implementation mode, the intelligent sensing shoe 1 comprises a bottom rubber layer 11 and a top rubber layer 13; the bottom rubber layer 11 is provided with a sensor groove and a signal wire groove 16, the pressure sensor is arranged in the sensor groove, the signal wire is arranged in the signal wire groove 16, and the top rubber layer 13 is fixedly connected with the bottom rubber layer 11.
Install sensor and connecting wire in sensor recess and signal wire casing 16 respectively, made things convenient for the installation to sensor and connecting wire.
As an implementable embodiment, the pressure sensors include a ball pressure sensor 2 and a heel pressure sensor 3; the sensor groove is divided into a sole sensor groove 14 and a heel sensor groove 15, the sole pressure sensor 2 is installed in the sole sensor groove 14, the heel pressure sensor 3 is installed in the heel sensor groove 15, and a connecting line between the sole pressure sensor 2 and the heel pressure sensor 3 is installed in the signal line slot 16.
Through the collection to sole and heel position pressure, can be better detect the atress condition of intelligent sensing shoes 1 when the people walks.
As an implementation mode, the intelligent sensing shoe 1 further comprises a middle rigid gasket 12; the middle rigid gasket 12 is fixedly installed between the bottom rubber layer 11 and the top rubber layer 13.
Because the rubber layer elasticity influences the response speed and the actual pressure value of the sensor, a rigid gasket is additionally arranged between the surface of the sensor and the lower layer of the top rubber layer 13, so that the sensor is ensured to have certain sensitivity and elastic recovery.
As an implementation mode, the intelligent sensing shoe 1 further comprises a human foot binding; the foot bindings are mounted on the rigid spacer layer and pass upwardly through the top rubber layer 13.
The middle layer is used for placing and fixing the binding of human feet, and according to common sandals, the binding bands penetrate from the upper layer to the bottom layer through screws, and are fixed on the middle layer, so that the binding structure capable of being rapidly loosened is manufactured.
As an embodiment, the thickness of the bottom rubber layer 11 is greater than the thickness of the top rubber layer 13.
The structural stability of the intelligent sensing shoe 1 is ensured, and the integrity is stronger.
As an alternative, the ball pressure sensor 2 is located at a higher level than the heel pressure sensor 3.
According to the characteristic that the front sole of a human body is bent in the walking process, the plane ratio of the front sole to the vamp is slightly higher at the position where a sensor is arranged at the heel, so that the stress state of the sensor is the best when the human body walks.
As an implementation manner, a thread passing hole is formed on one side of the sole heel structural plate 4 facing the intelligent sensing shoe 1.
The arrangement of the wire passing holes facilitates the connection of the sole pressure sensor 2 and the heel pressure sensor 3 with the sensing information acquisition board.
As an implementation manner, a through hole for a connection line to pass through is provided on the collection plate housing 5, and the connection lines of the sole pressure sensor 2 and the heel pressure sensor 3 pass through the line passing hole and the through hole and are electrically connected with the sensing information collection plate in the collection plate housing 5.
The arrangement of the wire passing holes and the through holes facilitates the wiring and connection of the system.
As an implementation mode, the collecting plate housing 5 is provided with a plurality of threaded holes, and the sensing information collecting plate is installed in the collecting plate housing 5 through the plurality of threaded holes.
The arrangement of the threaded holes facilitates the installation and fixation of the sensing information acquisition board, and the mounted sensing information acquisition board is more stable.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An exoskeleton foot sole sensing system based on an analog pressure sensor is characterized by comprising intelligent sensing shoes, the pressure sensor, a foot heel structural plate, a sensing information acquisition plate, an acquisition plate shell and a connecting ankle joint structural member;
the pressure sensor is installed in the intelligent sensing shoes, the sole is in with the structural slab setting one side of intelligent sensing shoes root, it installs to gather the board casing the sole is with on the structural slab, the sensing information acquisition board is installed in gathering the board casing, the sensing information acquisition board with pressure sensor communication connection, it sets up to connect the ankle joint structure on gathering the board casing, it is connected with ectoskeleton system to connect the ankle joint structure.
2. The analog pressure sensor based exoskeleton foot sole sensing system of claim 1, wherein said smart sensing shoe comprises a bottom rubber layer and a top rubber layer;
the pressure sensor is arranged in the sensor groove, the signal wire is arranged in the signal wire groove, and the top rubber layer is fixedly connected with the bottom rubber layer.
3. The analog pressure sensor based exoskeleton foot sensing system of claim 2 wherein said pressure sensors comprise a ball pressure sensor and a heel pressure sensor;
the sensor groove is divided into a sole sensor groove and a heel sensor groove, the sole pressure sensor is installed in the sole sensor groove, the heel pressure sensor is installed in the heel sensor groove, and a connecting wire between the sole pressure sensor and the heel pressure sensor is installed in the signal wire slot.
4. The analog pressure sensor based exoskeleton foot sole sensing system of claim 2 wherein said smart sensor shoe further comprises a middle rigid pad;
the middle rigid gasket is fixedly arranged between the bottom rubber layer and the top rubber layer.
5. The analog pressure sensor based exoskeleton foot sole sensing system of claim 4, wherein said smart sensor shoe further comprises a human foot binding;
the human foot is bound and installed on the rigid gasket layer and penetrates through the top rubber layer upwards.
6. The analog pressure sensor based exoskeleton foot sole sensing system of claim 2 wherein the thickness of the bottom rubber layer is greater than the thickness of the top rubber layer.
7. The analog pressure sensor based exoskeleton foot sensing system of claim 3 wherein said ball pressure sensor is located on a higher level than said heel pressure sensor.
8. The analog pressure sensor based exoskeleton foot sole sensing system of claim 3, wherein a line passing hole is formed in one side of the foot sole heel structural plate facing the intelligent sensing shoe.
9. The exoskeleton foot sole sensing system based on the analog pressure sensor as claimed in claim 8, wherein a through hole for a connecting wire to pass through is arranged on the collection plate shell, and the connecting wires of the sole pressure sensor and the heel pressure sensor pass through the wire passing hole and the through hole and are electrically connected with a sensing information collection plate in the collection plate shell.
10. The analog pressure sensor based exoskeleton foot sole sensing system of claim 9, wherein a plurality of threaded holes are formed in the collection plate housing, and the sensing information collection plate is mounted in the collection plate housing through the plurality of threaded holes.
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| CN202022863463.4U CN214560876U (en) | 2020-11-30 | 2020-11-30 | Exoskeleton sole sensing system based on analog pressure sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112621712A (en) * | 2020-11-30 | 2021-04-09 | 贵州航天控制技术有限公司 | Exoskeleton sole sensing system based on analog pressure sensor |
| CN116712061A (en) * | 2023-06-28 | 2023-09-08 | 北京神州龙芯科技有限公司 | Plantar pressure detection device for diabetics |
-
2020
- 2020-11-30 CN CN202022863463.4U patent/CN214560876U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112621712A (en) * | 2020-11-30 | 2021-04-09 | 贵州航天控制技术有限公司 | Exoskeleton sole sensing system based on analog pressure sensor |
| CN116712061A (en) * | 2023-06-28 | 2023-09-08 | 北京神州龙芯科技有限公司 | Plantar pressure detection device for diabetics |
| CN116712061B (en) * | 2023-06-28 | 2023-11-14 | 北京神州龙芯科技有限公司 | Plantar pressure detection device for diabetics |
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