CN104536307A - 一种抗干扰的开漏通信电路 - Google Patents

一种抗干扰的开漏通信电路 Download PDF

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Publication number
CN104536307A
CN104536307A CN201410657280.3A CN201410657280A CN104536307A CN 104536307 A CN104536307 A CN 104536307A CN 201410657280 A CN201410657280 A CN 201410657280A CN 104536307 A CN104536307 A CN 104536307A
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China
Prior art keywords
open
leakage
telecommunication circuit
jamproofly
feature
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CN201410657280.3A
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English (en)
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不公告发明人
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BEIJING 7Q TECHNOLOGY Co Ltd
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BEIJING 7Q TECHNOLOGY Co Ltd
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Priority to CN201410657280.3A priority Critical patent/CN104536307A/zh
Publication of CN104536307A publication Critical patent/CN104536307A/zh
Pending legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

本发明公开了一种抗干扰的开漏通信电路，它应用于各种复杂电磁环境以及大负载环境。该电路在传统的开漏输出结构上增加了抗干扰模块。

Description

一种抗干扰的开漏通信电路
技术领域
本发明涉及一种开漏通信电路，特别涉及一种抗干扰的开漏通信电路。
背景技术
对于一线或两线(I2C)以及三线(SPI)等电路，特别对于一线通信，由于使用环境恶劣，通信线路长期受到静电、雷电等环境干扰，以及负载芯片过多导致通信线路中杂波过多，干扰正常芯片(如图2所示)，为了保证芯片的正常工作，增加了抗干扰模块。
发明内容
(一)要解决的技术问题：
有鉴于此，本发明的目的是如何提高开漏通信在各种复杂电磁环境以及大负载环境中的通信质量。
(二)技术方案
1，在开漏通信接口处增加抗干扰模块，当线路没有通信时，用抗干扰模块为通信线路提供稳定的高电平。
2，在线路通信过程中，用抗干扰模块提供快速的上升沿。
3，在有芯片需要下拉时，提前关闭抗干扰模块。
附图说明
图1一种抗干扰的开漏通信电路的电路图
图2受干扰的开漏通信电路的波形
具体实施方式
附图为本发明的一种具体实施。该抗干扰的开漏通信电路，在开漏通信接口处增加抗干扰模块。

Claims (5)

1.一种抗干扰的开漏通信电路，其特征在于，在开漏的输出结构上增加抗干扰模块；
2.根据权利要求1所述的抗干扰的开漏通信电路，其特点在于，内部电源1和外部电源2可以不同也可以相同；
3.根据权利要求1所述的抗干扰的开漏通信电路，其特点在于，信号通过信号输出5控制下拉管输出到通信端口4；
4.根据权利要求1所述的抗干扰的开漏通信电路，其特点在于，所述的抗干扰模块可以采用通信线路电平检测；
5.根据权利要求1所述的抗干扰的开漏通信电路，其特点在于，所述的抗干扰模块可以采用附加线路控制。
CN201410657280.3A 2014-11-19 2014-11-19 一种抗干扰的开漏通信电路 Pending CN104536307A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410657280.3A CN104536307A (zh) 2014-11-19 2014-11-19 一种抗干扰的开漏通信电路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410657280.3A CN104536307A (zh) 2014-11-19 2014-11-19 一种抗干扰的开漏通信电路

Publications (1)

Publication Number Publication Date
CN104536307A true CN104536307A (zh) 2015-04-22

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0619548A1 (en) * 1993-04-06 1994-10-12 STMicroelectronics S.r.l. Interface circuit between a control bus and an integrated circuit suitable for two different protocol standards
CN1149948A (zh) * 1994-04-07 1997-05-14 德国汤姆逊-布朗特公司 数字信号传输电路
EP2330739A1 (en) * 2009-12-03 2011-06-08 Nxp B.V. Edge rate suppression for open drain buses
CN202275590U (zh) * 2011-09-29 2012-06-13 南京欧帝科技有限公司 一种低误差通信液晶拼接器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0619548A1 (en) * 1993-04-06 1994-10-12 STMicroelectronics S.r.l. Interface circuit between a control bus and an integrated circuit suitable for two different protocol standards
CN1149948A (zh) * 1994-04-07 1997-05-14 德国汤姆逊-布朗特公司 数字信号传输电路
EP2330739A1 (en) * 2009-12-03 2011-06-08 Nxp B.V. Edge rate suppression for open drain buses
CN202275590U (zh) * 2011-09-29 2012-06-13 南京欧帝科技有限公司 一种低误差通信液晶拼接器

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DD01 Delivery of document by public notice

Addressee: Beijing 7Q Technology Co., Ltd.

Document name: Notification of Publication and of Entering the Substantive Examination Stage of the Application for Invention

CB02 Change of applicant information

Address after: Room 5, building 98, No. 102300 West Lake Road, Mentougou District, Beijing, China

Applicant after: Beijing 7Q Technology Co., Ltd.

Address before: 100029, A, block 69, mount, No. 202, Beichen West Road, Beijing, Chaoyang District

Applicant before: Beijing 7Q Technology Co., Ltd.

COR Change of bibliographic data
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20150422