MCU-based virtual electronic load

Abstract

The invention provides an MCU-based virtual electronic load. The MCU-based virtual electronic load comprises an MCU, a communication unit, a sampling unit and an output control unit, the communicationunit obtains each piece of physical load information sent by an upper computer; the sampling unit acquires the external signals required for testing one or more running states in physical loads; theMCU receives and analyzes the physical load information and the external signals required by one or more physical load operation state tests to generate the corresponding voltage control instructions;and the output control unit receives each voltage control instruction output by the MCU, respectively controls to output a corresponding specified voltage value according to each received voltage control instruction, and obtains a constant resistance and / or current value through the operation and conversion processing of an internal circuit for representing a feedback signal value formed during the actual operation of the corresponding physical load. By implementing the invention, the operation state of the physical load can be simulated, and the investment and maintenance costs are reduced.

Description

Technical field [0001] The present invention relates to the technical field of automobile electronics, in particular to a virtual electronic load based on MCU. Background technique [0002] With the continuous development of today's automotive industry, the automotive electronics industry is also constantly advancing. At the same time, with the improvement of enterprise production capacity, the demand for various motors, solenoid valves, blowers and other loads is also rising. [0003] In automobiles, there are many loads that are driven. After the controller is successfully designed and developed, it must go through the critical step of testing. Only qualified products that pass the precise test tasks can be mass-produced and sold. For example, the electric window lift switch controller is a product that almost every car has. The load driven by most electric window lift switch controllers is a DC motor, which controls the DC motor to drive the window lift. [0004] At present, most...

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Problems solved by technology

[0004] Now most of the enterprises are directly using the real DC motor loads to conduct test experiments. Although the use of real loads can be the most accurate guarantee to be close to the real situation, there are always many inconveniences in them: their own cost is high, and they are too large to It takes up a lot of space, and there are heat dissipation problems due to excessive current. If it is not handled properly, there will be safety hazards and high maintenance costs after damage.

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