Point contact device suitable for capacitive touch screen of robot

Abstract

The invention provides a point contact device of a capacitive touch screen suitable for a robot. The device is characterized by comprising a point battery, a conducting wire, a metal sheet and a battery bin. According to the invention, a closed loop is formed, so that current exists in the closed loop, an electric field is generated, and a coupling capacitor is formed on the surfaces of the robotand the touch screen; capacitance inside the touch screen is a direct conductor, so that the conductive silica gel head absorbs a very small current from a contact point, the current flows out from electrodes on four corners of the touch screen respectively, and the current flowing through the four electrodes is in direct proportion to the distance from the conductive silica gel head to the four corners. The external controller obtains the position of a touch point through accurate calculation of the proportions of the four currents, point contact of the robot on the touch screen is achieved,the device can conduct point contact operation on the capacitive touch screen like human fingers, the touch screen can receive touch signals, and the touch screen responds, so the practicability of the device is further improved.

Description

technical field [0001] The invention relates to the technical field of robot integration equipment, in particular to a point-touch device suitable for a capacitive touch screen of a robot. Background technique [0002] Capacitive touch screen technology uses the current induction of the human body to work. The capacitive touch screen is a four-layer composite glass screen. The inner surface and interlayer of the glass screen are each coated with a layer of ITO, and the outermost layer is a thin layer of silica glass protective layer. , the interlayer ITO coating is used as the working surface, and four electrodes are drawn from the four corners. The inner layer of ITO is the shielding layer to ensure a good working environment. When the finger touches the metal layer, due to the electric field of the human body, the user and the surface of the touch screen form a A coupling capacitor, for high-frequency current, the capacitor is a direct conductor, so the finger sucks a smal...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the operation of the touch screen is realized by touching with artificial fingers. However, due to the influence of external factors, the artificial fingers will be contaminated with some dust or liquid, so that the touch screen cannot be used normally. Technicians have developed a robot touch device;

[0004] In the prior art, the point touch on the touch screen is achieved by setting a touch pen on the robot arm. When the touch pen on the robot arm touches the metal layer of the touch screen, the robot cannot form a coupling capacitance with the touch screen due to the lack of electric field of the robot. Furthermore, it is impossible to realize the touch operation on the touch screen, that is, the robot cannot touch the capacitive touch screen like a human finger, resulting in the touch screen not receiving the touch signal and making the touch screen unresponsive. Therefore, the purpose of related integration cannot be achieved , so that the practicability of the touch device is greatly reduced. Therefore, we propose a touch device suitable for capacitive touch screens of robots

Images