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A multi-channel precision DC level signal generating device

A DC level and signal generation technology, applied in the direction of electrical program control, sequence/logic controller program control, etc., can solve the problems of high cost and large space occupation, and achieve the effect of reducing space occupation and cost

Inactive Publication Date: 2015-10-21
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to generate these DC level signals, the traditional method needs to use multiple DC level signal generators, which has the disadvantages of high cost and large space occupation, such as figure 1

Method used

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  • A multi-channel precision DC level signal generating device
  • A multi-channel precision DC level signal generating device
  • A multi-channel precision DC level signal generating device

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Embodiment Construction

[0019] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.

[0020] figure 2 It is a schematic diagram of a specific embodiment of the multi-channel precision DC level signal generating device of the present invention.

[0021] In this example, if figure 2 As shown, the multi-channel precision DC level signal generating device of the present invention includes a control module 1 , a precision DC signal generator 2 , one input multiple output selection switch 3 , n signal holding circuits 4 and n isolation buffer circuits 5 .

[0022] The control module 1 generates level control signals and channel selection control signals. Wher...

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Abstract

The invention provides a multi-path precise direct current level signal generation device, which comprises a precise direct current signal generator, a one-path input and multi-path output selection switch, n signal holding circuits and n isolation buffer circuits, wherein the precise direct current signal generator circularly generates precise direct current level signals required by n channels in sequence under the control of a control module; then the generated precise direct current level signal required by a certain channel is transmitted into the signal holding circuit of the corresponding channel through the one-path input and multi-path output selection switch; and the isolation buffer circuit of the corresponding channel outputs to the respective functional circuit. Thus, a plurality of direct current level signals with different level values can be output by using one precise direct current signal generator to reduce the cost and the occupied space.

Description

technical field [0001] The invention belongs to the technical field of DC level generation, and more specifically relates to a multi-channel precise DC level signal generating device to effectively realize the generation of multiple channels of precise DC level signals with different DC level values. Background technique [0002] A DC level signal is a common signal in the electronics field and is often used to adjust or control parameters in electronic systems. For example, in the signal generator, the DC level signal is multiplied by the waveform signal to be generated, and the amplitude control of the waveform signal is realized by changing the level value of the DC level signal; another example, the DC level signal is used for comparison with the waveform signal A square wave signal is generated, and the duty ratio parameter of the square wave signal can be changed by adjusting the level value of the DC level signal. [0003] As the complexity of electronic systems incr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/04
Inventor 刘科肖寅东田书林郭广坤王厚军黄建国黄端
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA