Active excitation touch sensor based on modal analysis and application method

Abstract

The invention discloses an active excitation touch sensor based on modal analysis and an application method. The active excitation touch sensor comprises a touch sensing module (1); the touch sensingmodule (1) is connected with a conditioning circuit module (2); the conditioning circuit module (2) is connected with a modal analysis module (3); the touch sensing module (1) comprises an active excitation vibration source (11), the active excitation vibration source (11) is connected with a vibration sensor (13) through a conduction base (12), and the vibration sensor (13) is connected with theconditioning circuit module (2). The touch sensor and the method have the advantages of being simple in structure, wide in material selection range and easy to manufacture and process.

Description

technical field [0001] The invention relates to the field of sensors, in particular to an active excitation tactile sensor based on modal analysis and a usage method. Background technique [0002] By interacting with external objects through tactile sensors, the robot can obtain mechanical stimulus information such as contact with external objects, sliding, and pressure. [0003] At present, traditional tactile switches, strain-type tactile sensing, and capacitive tactile sensing mechanism tactile sensors are used. When the robot touches and squeezes objects, the principle and operation mode of tactile sensing are characterized by: the robot and the object being touched Make a relatively close movement, make the tactile sensor contact with the surface of the object, generate pressure locally in the sensing structure, generate displacement or deformation to obtain a switch, step or pulse contact signal. [0004] The tactile sensor using the aforementioned traditional tactile...

AI Technical Summary

Problems solved by technology

[0004] The tactile sensor using the aforementioned traditional tactile sensing mechanism has the main disadvantages when acquiring the signal of the robot contact process: the switch type tactile sensor generally needs to rely on the motion mechanism, and the structure is relatively complicated; while the strain type or capacitive tactile sensor The feeling generally depends on the deformation structure, the production is more complicated, and there are specific requirements for material selection

When the robot is required to have multi-point distributed tactile sensing, it is more difficult to design the tactile sensor structure, material selection and manufacturing process of the aforementioned traditional tactile sensing mechanism.

[0005] To sum up, the current tactile sensors have the disadvantages of complicated mechanical structure, many restrictions on the use of materials, and difficult manufacturing and processing.

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