Human-computer Interface Design Of The Resistance Welder Based On WinCE

Resistance welder is widely used in the automotive, machining, aerospace and otherfieldsbecause of its easy mechanization, automation and short production cycle, highefficiency. The continuous development of new materials and new technology put forwardhigher requirements for resistance welder’s welding quality and control accuracy. With therapid development of information technology and power electronics technology and theemergence ofcomputer control inverter resistance welding power supply, resistance welderismoving in the direction of all-digital. Digitized welderis precision, user-friendly, green andnetworking, etc., so that it can be well adapted to the needs of the current industrialproduction.The digitization of the welderman-machine interactive system is an important aspect ofthe welder’s full digitalization.In the current domestic market, the majority of the applicationof welder’s human-computer interaction products is anchored on the controller’s LCD settingspanel, generally based on the type of character keys, so the interface design is not friendlyenough. While human-machine interfacebased on Laptop,is not convenient enough for theactual operation of the assembly. Given these, the paper proposing a human-computerinteraction products based on embedded WinCE platform has important practical significance.This paper describes thedesign and implementation processof a resistancewelderhuman-machine interactive interface(HMI)based on WinCE platform. It takesLJD-eWin6S embedded one touch machine as a hardware control platform, which has a32-bitARM920T high-speed processor core,400MHz frequency, with a accurate andconvenient.6.8-inch LCD touch screen which supports for four-wire resistive touch input.ThisHMI carries WinCE5.0embedded operating system whose rich GUI and applicationdevelopment toolsyou can take full advantage of.Also its real-time featurescan be played.ThisHMI usesthe MFC single document application framework of the VC++2008for theoverall system design. It uses RS232serial port communicatewith DSP directly, and thencontrols the welding power converter devices.In order to ensure accuratecommunicationdevelopeing a strict serial communication protocol.Also usingmulti-threadedcommunicatio- ns technology to ensure communication smoothly. Using SQLite to build a small embeddeddatabase system for unified management some parameters and data of the welder andinterface. The overall debugging provesthat this HMIhas user rights management, operationof the multi-welder management, parameter settings, specification setting, fault reset,real-time monitoring and so on for the welder.In addition, as the input panel for WinCE system comes to the detriment of usersaccurately input problem, so this paper designsa input method of SIP as the components of theWinCE system, then it is embedded into the system registery as the default input method toensure that the user can be easy and accurate input.At last, I make a summary of work done on this stage, and point out that the goals anddirection of future research work.