A test system and test method for the conductivity of a new type of silicone button

Abstract

The invention relates to a remote controller testing device, and provides a testing system and testing method for the conductivity of a novel silica gel keypad. The testing system comprises a rack, a moving mechanical arm, a positioning jig, an integrated silica gel keypad click head S1, an impedance detection circuit, signal acquisition and processing software and a user operation interface. A conductive silica gel keypad sheet to be tested is placed on the positioning jig. The moving mechanical arm is arranged above the positioning jig and connected with an electrical control system. The integrated silica gel keypad click head is arranged at the tail end of the moving mechanical arm and connected with a computer system through a resistance sampling circuit and a signal processing circuit. The resistance sampling circuit comprises an integrated operational amplifier U1. The inverted input end of the integrated operational amplifier U1 is connected with a divider resistor R3 and an adjustable comparison resistor R2 respectively. The divider resistor R3 and the comparison resistor R2 are connected in series. The other end of the divider resistor R3 is grounded. The other end of the comparison resistor R2 is connected with the integrated silica gel keypad click head S1. The in-phase input end of the integrated operational amplifier U1 is connected with a divider resistor R1 and an equivalent resistor R0 of conductive particles on a silica gel keypad respectively. The divider resistor R1 and the equivalent resistor R0 are connected in series. The other end of the divider resistor R1 is grounded. The output end of the integrated operational amplifier U1 is connected with a computer through an I / O port U2. The testing system and testing method for the conductivity of the novel silica gel keypad are simple in structure, stable in performance and convenient to operate.

Description

Technical field [0001] The invention relates to a remote control test device, in particular to a test system and test method for the conductivity of a new type of silica gel button. Background technique [0002] In the production and assembly line of silicone conductive buttons for remote control, remote control or other electronic products, there will be a dedicated station to detect whether the bottom of the silicone button is coated with conductive carbon particles. At present, it is mainly through Artificial eye inspection and visual comparison using industrial cameras (color difference comparison between silica gel and conductive carbon particles) are two methods. [0003] Artificial eyes check whether the bottom of each button is coated with conductive carbon particles. The eyes are prone to fatigue, slow speed, low efficiency, and are easily misjudged by human factors. [0004] Use industrial camera to visually compare whether the bottom of each button is coated with conduct...

AI Technical Summary

Problems solved by technology

[0005] The cost of camera visual inspection is high (CCD and visual software are expensive), and the skills of maintenance personnel to adjust the machine will directly affect the use of equipment and product quality, which is generally unacceptable to small and medium-sized remote control manufacturers;

[0006] The difference and design of the incoming materials (such as the silicone button body and the conductive carbon particles are both black or similar in color) will cause missed and misjudged equipment, or cannot be detected at all;

[0007] The difference in the conductive resistance value of the conductive carbon particles of the button (the thickness of the conductive carbon particles and the oily dirt cause the conductive resistance value to be too large or non-conductive) is uncontrollable and can only be detected manually

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