A plantar pressure detection device and a sports assisting device equipped with the device

Abstract

A plantar pressure detection device comprises a first rigid thin plate. The first rigid thin plate is provided with a plurality of first hollow-out shape-changing suspension arms; a first sensor is arranged on each first hollow-out shape-changing suspension arm; a second rigid thin plate is mounted over the first rigid thin plate; the first rigid thin plate is connected with the second rigid thin plate via a plurality of first bearing bodies; the lower end of each first bearing body is installed on the first hollow-out shape-changing suspension arm; between the first and second rigid thin plates, all pressure can be directly applied to the hollow-out shape-changing suspension arms via the cylindrical bearing bodies, so measuring loss can be avoided for the measured force; the first hollow-out shape-changing suspension bends and is deformed when pressure is applied; the first sensors can sense the deformation, so an accurate plantar pressure measuring signal can be achieved; the rigid thin plates has strong bearing capacity, thereby being capable of being conveniently and directly connected to other machinery structures and easily installed and fixed; the plantar pressure detection device has simple structure and reliable performance, and is firm; and cost can be greatly reduced.

Description

technical field [0001] The invention relates to a pressure detection device, in particular to a plantar pressure detection device and a motion assisting device equipped with the plantar pressure detection device. Background technique [0002] Wearable exoskeleton devices need to accurately measure the pressure on the wearer's sole and / or the mechanical structure base in real time to sense the wearer's current movement status, so as to implement relevant drive control to realize the motion assist function. Biped robots also need real-time measurement of robot foot pressure to assist in judging the state of the robot. [0003] The existing plantar measuring device is not optimized enough for the design of the sensor and mechanical structure, and there are problems such as inaccurate measurement, insufficient firmness of the plantar measuring device, too complicated structure, high cost, and low reliability. [0004] Patent CN2006800006514.1 and the 2010 master's thesis of the...

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Problems solved by technology

[0003] The existing foot measuring device is not optimized enough for the design of the sensor and mechanical structure, and there are problems such as inaccurate measurement, insufficient firmness of the foot measuring device, too complicated structure, high cost, and low reliability.

[0004] Patent CN2006800006514.1 and the 2010 master's thesis of the University of Science and Technology of China "Research on a Flexible Biped Powered Robot Perception System for Gait Detection" both disclose a plantar pressure detection device, which uses a flexible oil pressure tube to sense the foot pressure. The bottom pressure, the problem brought by this device is that the contact pressure area of ​​the oil pressure pipe is difficult to measure accurately, resulting in inaccurate measurement

Patent CN201410036599.4 discloses a plantar pressure detection device, which uses several force-measuring floats to measure the plantar pressure. The problem is that the structure is complex, the cost is high, and when the pressure is applied to the edge of the device, the measurement result will be severely distorted

Patent CN201410491074.X discloses a foot end force detection device, which has a complex structure and high cost, and there is also the situation that when the pressure is applied to the edge of the device, the measurement result will be inaccurate, and the device only bears force at a single point, and the structure is not firm. Long-term use is easy to damage

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