Sensores

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MICROCONTROLADORES

EMER ALEXIS TARAZONA PEÑARANDA
Est. Ing Mecánica
Memer_1@hotmail.com

LUIS FERNANDO GONZALEZ HERRERA
Est. Ing Mecánica
Fernando_mechanics@hotmail.com

PABLO EMILIO ARTEAGA ZAFRA
Est. Ing Mecánica
Pabloarteaga99@hotmail

UNIVERSIDAD INDUSTRIAL DE SANTANDER
Forestry vehicle machine builder consolidates controls with a single 32-bit controllerMobile vehicles are becoming increasingly complex. With the demand to offer improved performance, reduced wiring, superior diagnostic capabilities, and increased uptime, the functional requirements of a mobile vehichle are higher than ever. In addition, mobile vehicles are continually challenged by the extreme outdoor elements in which they must perform.
The rugged terrain and harsh elements found inthe forestry industry is one of the most difficult environments for mobile vehicles – and their electronc controls. The machine builder HSM Honenloher relies on the 32-bit Classic Controller from ifm to meet the needs of their machines. The powerful CR0032 controller with a 32-bit processor features a large program memory that allows the processing of complex application programs
Set-up of thecontrol system

In the past, different control modules were used in the various vehicle platforms. Now, the different tasks can all be performed by ifm’s single, 32-bit Classic Controller. The controller processes all sensor, actuator, and controls signals via the CAN bus using decentralized input/output modules for the individual machine parts. The controller has 16 multifunctional inputs and 16multifunctional outputs. The inputs can be configured as digital, frequency or analog with diagnostic function. The outputs can be configured as digital or PWM with diagnostic capapbilities with or without current control.
Despite the size of the application program and its complex logic, the PLC cycle time is so short that four independent CAN interfaces can be read and processed in parallel.CAN Interface 1 is responsible for the communication with CAN joysticks and the decentralized I/O modules using the CANopen protocol. CAN Interface 2 handles the exchange of data with the central display. The display allows the vehicle to be adjusted to the unique requirements of up to 5 different operators while at the same time providing both diagnostics and machine calibration options. CANInterface 3 manages the engine. Here the data is transferred using the standard SAE J1939 protocol. Engines feature both the tier 3 and the latest tier 4 emissions standards using this protocol. The harvester uses CAN Interface 4 for control data exchange. The integrated diagnostic functions allow the monitoring of all signals to further ensure operating integrity. For example, a short circuit or wirebreak in an actuator cable is detected, evaluated and immediately transferred to the control system. The response that occurs depends on the I/O configuration while fault messages are indicated on the display.

INTRODUCCION

En la práctica, la automatización de la industria alcanza diferentes niveles y grados ya que la posibilidad concreta de su implementación en los procesos de fabricaciónindustrial varia considerablemente según se trate de procesos de producción continua o en serie. En efecto, en el primer caso, el conducto es el resultado de una serie de operaciones secuenciales, predeterminadas en su orden, poco numerosas, y que requieren su integración en un flujo continuo de producción. Los principales aportes de la microelectrónica a este tipo de automatización son losmecanismos de control de las diversas fases o etapas productivas y la creciente capacidad de control integrado de todo el proceso productivo. Por su parte, la producción en serie está formada por diversas operaciones productivas, generalmente paralelas entre si o realizadas en diferentes períodos de tiempos o sitios de trabajo, lo que ha dificultado la integración de líneas de producción con la...