Unlimited operation and linear servo method for interactive exhibits

Abstract

The invention provides an unlimited operation and linear servo method for interactive exhibits, and the method provides an unlimited operation and linear servo device for interactive exhibits of a science and technology museum, a museum and the like. The device comprises a manipulation unit, a control circuit, a servo unit and a power supply unit, wherein the manipulation unit consists of a knob and an incremental rotary encoder (encoder for short); the servo unit consists of a stepping motor and a stepping motor controller; the control circuit converts pulse signals output by an A phase and a B phase of the encoder into a pulse signal and a TTL (Transistor-Transistor Logic) signal to serve as rotation speed and direction control signals of the stepping motor controller respectively; and a low voltage direct current source supplies power to the encoder, the control circuit and the stepping motor controller. The characteristic of the encoder ensures that a rotation angle of the knob is unlimited (any value from 0 to above 360 degrees), and the reliability of the interactive exhibits is ensured; a rotation speed and a rotation angle of the stepping motor are linearly proportional to a rotation speed and the rotation angle of the knob, so that the manipulation sense of the interactive exhibits is raised; and the low voltage direct current source ensures the operational safety of the interactive exhibits.

Description

technical field [0001] The invention relates to an unlimited operation and linear servo method for interactive exhibits in science and technology museums and museums. Background technique [0002] At present, knobs, switches, and joysticks are widely used in interactive exhibits in science and technology museums, museums and other places as interactive input manipulation devices for exhibits, and control motors to drive a certain mechanism to move or rotate. [0003] The rotation range of the knob is generally limited by the input sensor, there is a limit position, and it cannot be rotated at any angle, so it is extremely vulnerable to damage. [0004] The characteristics of the incremental rotary encoder ensure that the rotation angle of the manipulation knob is not limited (ranging from 0 degrees to any value greater than 360 degrees), which improves the reliability of the interactive exhibits. [0005] When using switches and joysticks to operate the input control device...

AI Technical Summary

Problems solved by technology

[0005] When using switches and joysticks to operate the input control device, since the speed and displacement of the servo motor have nothing to do with the audience's operation, the audience determines the stop point based on visual feedback, and the control feeling is poor.

Images