Intelligent constant current control device
A constant current control and output device technology, applied in control/regulation systems, regulation of electrical variables, instruments, etc., can solve unsatisfactory problems, achieve controllability and display, reduce product costs, and reduce hardware scale and volume effects
Inactive Publication Date: 2014-07-16
WUHU MOTIONTEC AUTOMOTIVE
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Problems solved by technology
However, in some special practical occasions, pure hardware modulation circuits are unsatisfactory in terms of volume, cost or control flexibility.
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[0010] The present invention will be described in more detail below in conjunction with the accompanying drawings.
[0011] see figure 1 The intelligent constant current control device of the present invention includes a current sampling device, an amplifier, an MCU, a power supply control chip and a current output device in sequence, and the current sampling device amplifies the collected current signal through the amplifier and sends it to the MCU, and the MCU compares the signal with the After the preset reference value is compared, the corresponding PWM signal is output to the power control chip according to the comparison value, and the power control chip controls the current output device to output the desired current. There is also a current feedback circuit between the current output device and the current sampling device. It is used to monitor the output circuit in real time. It also includes the connection between the host computer and the MCU, the MCU transmits the...
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The invention provides an intelligent constant current control device comprising a current sampler, an amplifier, and a current output device. The intelligent constant current control device is characterized by further comprising a MCU and a power control chip. According to the connection relation, a current signal collected by the current sampler is amplified by the amplifier and transmitted to the MCU; the MCU compares the signal to a preset reference value and outputs a corresponding PWM signal to the power control chip according to comparison results; the power control chip controls the current output device to output satisfactory current. A current feedback circuit is further arranged between the current output device and the current sampler and is used for monitoring an output circuit in real time. Therefore, the MCU is used to process the current signal and outputs PWM as current reference, current output is controlled in time, controlling is visual and easy, constant current output of a product can be flexibly displayed and controlled, and different constant current outputs can be regulated according to needs of customers.
Description
technical field [0001] The invention belongs to the field of industrial control automation, and in particular relates to an intelligent constant current control device. Background technique [0002] In traditional industrial control, the constant current output control of current is mostly realized through hardware circuits. But in some special practical occasions, pure hardware modulation circuits are unsatisfactory in terms of volume, cost or control flexibility. Contents of the invention [0003] The invention provides an intelligent constant current control device, which uses an MCU to output modulation signals to realize constant current. Specifically, the technical scheme adopted in the present invention is as follows: [0004] An intelligent constant current control device, including a current sampling device, an amplifier and a current output device, is characterized in that it also includes an MCU and a power control chip, and the connection relationship is that...
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IPC IPC(8): G05F1/46
Inventor 周玉成汪义文程永海许启卫李森贵
Owner WUHU MOTIONTEC AUTOMOTIVE