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A digital signal isolator and corresponding pulse width encoding and decoding method

A digital signal and isolator technology, applied in the field of signal transmission, can solve the problems of complex coding and decoding scheme, long data processing time, and difficult circuit implementation, and achieve the effect of simple circuit, fast response speed, and increased operating frequency

Active Publication Date: 2017-06-06
北京中科格励微科技有限公司
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Problems solved by technology

However, iCoupler technology adopts the pulse number encoding method, the encoding and decoding scheme is complicated, and the circuit is not easy to realize, and because of its specific method of double pulse encoding, the data processing time is too long, the transmission rate is greatly restricted, and there are certain limitations.

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  • A digital signal isolator and corresponding pulse width encoding and decoding method
  • A digital signal isolator and corresponding pulse width encoding and decoding method
  • A digital signal isolator and corresponding pulse width encoding and decoding method

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0045] According to one aspect of the present invention, a digital signal isolator based on a microtransformer is proposed. As a dual-port device, a complete electrical circuit is realized between the input port and the output port of the digital signal isolator due to the existence of the internal microtransformer isolation barrier. Isolation, the signal transmission is completed through the electromagnetic effect of the micro-transformer.

[0046] figure 1 It is a digital signal isolator based on a microtransformer according to an embodiment of the present invention, such as figure 1 As shown, the digital signal isolation circuit based on a microtransformer includes a filtering unit, an encoding unit, a microtransforme...

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Abstract

The present invention discloses a digital signal isolator based on a micro transformer. The digital signal isolator comprises a filtering unit, an encoding unit, a micro transformer, a shaping and filtering unit and a decoding unit. The filtering unit is used for filtering an input signal. The encoding unit is connected to the filtering unit and is used for encoding the filtered signal, and the encoding unit comprises a rising edge encoding unit, a falling edge encoding unit and a signal combining unit. The micro transformer is connected to the encoding unit and is used for coupling encoded signals. The shaping and filtering unit is connected to the micro transformer and is used for shaping and filtering the signal which is processed by the micro transformer. The decoding unit is connected to the shaping and filtering unit and is used for decoding the shaped and filtered signal. According to the digital signal isolator, the chip area is reduced, the response speed is fast, and the working frequency is high.

Description

technical field [0001] The invention relates to the technical field of signal transmission, in particular to a digital signal isolator based on a microtransformer and a corresponding pulse width encoding and decoding method. Background technique [0002] Digital signal isolators are mainly used for the transmission of digital signals. Digital isolation technology is often used in field buses in industrial network environments, military electronic systems, aerospace electronic equipment, and medical equipment, especially in some harsh application environments. One of the first reasons for using an isolator is to eliminate noise; another important reason is to protect devices (or people) from high voltage hazards. For a long time, optocoupler has been the first choice for the isolation circuit selection scheme. It is widely used, the whole circuit is very mature, and the cost is very low. However, with the continuous improvement of the integration of modern systems and the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K7/08H03K19/00
Inventor 张峰李金良
Owner 北京中科格励微科技有限公司
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