WO2014032395A1 - 一种抗干扰开关量传输电路 - Google Patents
一种抗干扰开关量传输电路 Download PDFInfo
- Publication number
- WO2014032395A1 WO2014032395A1 PCT/CN2013/000998 CN2013000998W WO2014032395A1 WO 2014032395 A1 WO2014032395 A1 WO 2014032395A1 CN 2013000998 W CN2013000998 W CN 2013000998W WO 2014032395 A1 WO2014032395 A1 WO 2014032395A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- switching
- contact
- signal
- switching value
- loop
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/001—Functional circuits, e.g. logic, sequencing, interlocking circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/002—Monitoring or fail-safe circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/167—Circuits for remote indication
Definitions
- the invention belongs to the field of switch quantity transmission and relay protection of power system, and particularly relates to an anti-interference switch quantity transmission circuit, which solves the interference problem by means of dredging instead of avoiding. Background technique
- the general method of use is to have a dry contact at the signal end. When there is no signal, the contact is open. When there is a signal, the contact becomes a closed state book.
- a switching quantity collecting circuit is arranged, and DC+ forms a loop by connecting the signal terminal contact point and the signal receiving end of the signal receiving end to the DC-. When there is a signal, the signal terminal is closed, the loop is turned on, and the switch acquisition loop senses the current and reflects the signal.
- the present application discloses an anti-interference switch transmission circuit, and the following technical solutions are specifically adopted.
- An anti-interference switch quantity transmission circuit characterized in that: the transmission circuit comprises a conversion contact, a DC power supply negative terminal DC -, a DC power supply positive terminal DC+, and a switching quantity acquisition circuit;
- the conversion contact includes a normally open contact and a normally closed contact
- the switching contact is controlled by the collected switching signal terminal;
- the signal collection end of the switch quantity acquisition loop is connected to the switch quantity signal to be collected;
- One end of the switch quantity collecting loop is connected to the DC power positive terminal DC+ through a normally open contact, and the other end of the switch quantity collecting circuit is connected to a DC power negative terminal DC-;
- One end of the switch quantity collection loop is connected to the DC power supply negative terminal DC- through a normally closed contact, and the other end of the switch quantity acquisition circuit is also connected to the DC power supply negative end DC-;
- the normally closed contact opens, the normally open contact closes, and the DC power positive terminal DC+ passes through the closed normally open contact through the switch acquisition loop and the DC-form loop, and the switch acquisition loop is turned on.
- the invention adds a way of connecting the contacts. That is, the acquisition loop switching contact is controlled by the signal terminal. When there is no switching signal, the normally closed contact of the switching contact is connected to the DC-. In this way, the level in the loop is always in the DC-state, and there is no change in the absence of the switching signal due to external interference; when there is a switching signal, the signal end switches the state of the switching contact of the corresponding loop, so that the loop When turned on, the switching acquisition loop senses the current and reflects the signal.
- the invention changes the position state of the acquisition loop contact when the original switchless transmission is performed. That is to say, a DC-cable is added, and the cable is connected with the normally closed contact of the conversion contact, so that both ends of the acquisition loop are connected to the DC- when no switching is transmitted, thereby eliminating the external switching caused by the lack of switching The potential change on the loop when the signal is present.
- the present invention does not use the method of hiding to solve the interference problem, but solves it by means of dredging.
- the present invention solves the interference problem by connecting both ends of the acquisition loop to the DC- when there is no signal.
- the present invention switches the presence or absence of a signal by switching the contacts.
- FIG. 1 Schematic diagram of the original switch transmission circuit
- FIG. 2 is a schematic diagram of an anti-interference switch transmission circuit of the present invention.
- FIG. 1 is a schematic diagram of the original switch transmission circuit.
- the acquisition circuit is connected to DC+ through a normally open contact.
- the signal terminal controls the normally open contact to close, and DC+ passes the closed normally open contact through the switch.
- the quantity acquisition loop and the DC-forming loop the switching quantity acquisition loop is turned on, reflecting the switching quantity signal.
- the problem with this wiring is that the distance between each switching transmission cable is very close.
- the transmission cable acts as an antenna.
- the function of the switch around the other cables (or other interference factors in the environment) will cause crosstalk to the cable.
- the acquisition loop will mistake the interference for the switch signal and cause an error.
- the signal signal DC+ is connected to the normally open contact of the switching contact at the signal end, and the switching signal DC- is connected to the normally closed contact of the switching contact, and the control coil of the switching contact is switched.
- a control loop (not shown) that is serially connected to the signal terminal. On the side of the acquisition loop, the negative end of the acquisition loop is connected to the switching signal DC-, and the positive end of the acquisition loop is connected to the common end of the conversion junction.
- the positive end of the acquisition loop is connected to the switch quantity DC-, and the potential of both ends of the acquisition loop is the same to reduce external interference; when the control coil of the conversion contact is energized (control contact action), the acquisition loop is positive
- the terminal is connected to the switching quantity DC+, and a potential difference is generated at both ends of the collecting circuit, and a switching quantity signal is collected.
Landscapes
- Transmitters (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Keying Circuit Devices (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Selective Calling Equipment (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/405,449 US9679726B2 (en) | 2012-08-27 | 2013-08-23 | Anti-interference switch signal transmission circuit |
GB1421898.6A GB2517368B (en) | 2012-08-27 | 2013-08-23 | Anti-interference switch signal transmission circuit |
IN10380DEN2014 IN2014DN10380A (zh) | 2012-08-27 | 2013-08-23 | |
PH12014502807A PH12014502807B1 (en) | 2012-08-27 | 2014-12-17 | An anti-interference switch signal transmission circuit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210307955.2A CN102809680B (zh) | 2012-08-27 | 2012-08-27 | 一种抗干扰开关量传输电路 |
CN201210307955.2 | 2012-08-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014032395A1 true WO2014032395A1 (zh) | 2014-03-06 |
Family
ID=47233438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2013/000998 WO2014032395A1 (zh) | 2012-08-27 | 2013-08-23 | 一种抗干扰开关量传输电路 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9679726B2 (zh) |
CN (1) | CN102809680B (zh) |
GB (1) | GB2517368B (zh) |
IN (1) | IN2014DN10380A (zh) |
PH (1) | PH12014502807B1 (zh) |
WO (1) | WO2014032395A1 (zh) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102809680B (zh) | 2012-08-27 | 2015-01-21 | 北京四方继保自动化股份有限公司 | 一种抗干扰开关量传输电路 |
CN105356867B (zh) * | 2015-12-09 | 2018-03-02 | 成都默一科技有限公司 | 一种带防串扰结构的多通道输入信号切换电路 |
CN105656199B (zh) * | 2016-01-07 | 2018-03-30 | 武汉里得电力科技股份有限公司 | 自动动态监测数字式接输电线 |
CN109004921A (zh) * | 2018-07-02 | 2018-12-14 | 蔡旺兵 | 一种开关量元件免屏蔽抗干扰输出电路 |
CN111613481B (zh) * | 2020-05-28 | 2022-07-22 | 浙江炬诺电器股份有限公司 | 基于双储能电容的抗晃电智能控制器 |
CN111736069B (zh) * | 2020-08-07 | 2021-01-26 | 浙江众合科技股份有限公司 | 一种避免信号采集线混线的继电器状态安全采集系统 |
Citations (5)
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CN2050172U (zh) * | 1989-03-21 | 1989-12-27 | 宋荣海 | 识别交直流低电位的试电笔 |
CN101158701A (zh) * | 2007-11-16 | 2008-04-09 | 中国科学院电工研究所 | 高压系统电压及绝缘电阻测量电路 |
CN201331563Y (zh) * | 2008-12-12 | 2009-10-21 | 青岛四方车辆研究所有限公司 | Dc600v在线绝缘检测装置 |
CN201562001U (zh) * | 2009-09-18 | 2010-08-25 | 哈尔滨九洲电气股份有限公司 | 中压变频器直流母线电压采样装置 |
CN102809680A (zh) * | 2012-08-27 | 2012-12-05 | 北京四方继保自动化股份有限公司 | 一种抗干扰开关量传输电路 |
Family Cites Families (8)
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US6021038A (en) * | 1998-08-27 | 2000-02-01 | Hanchett Entry Systems, Inc. | Control circuit for an electric door strike using a latching solenoid |
CN201413570Y (zh) * | 2009-04-21 | 2010-02-24 | 西安迅腾科技有限责任公司 | 具有光电隔离功能的数据采集传输仪 |
CN201466801U (zh) * | 2009-07-28 | 2010-05-12 | 北京华美煜力电力技术有限公司 | 一种提高控制电缆抗干扰能力的装置 |
CN201489089U (zh) * | 2009-08-25 | 2010-05-26 | 广州粤能电力科技开发有限公司 | 一种开关量测量电路 |
CN102221672A (zh) * | 2010-04-19 | 2011-10-19 | 鸿富锦精密工业(深圳)有限公司 | 按键检测电路 |
CN202008598U (zh) * | 2011-01-12 | 2011-10-12 | 株洲变流技术国家工程研究中心有限公司 | 一种高压变频器的开关量控制插件 |
CN102354193B (zh) * | 2011-09-08 | 2013-11-06 | 山东科汇电力自动化有限公司 | 一种电力测控开关信号采集方法 |
CN102539967B (zh) * | 2011-12-29 | 2014-06-11 | 北京交控科技有限公司 | 信号采集和驱动的测试装置 |
-
2012
- 2012-08-27 CN CN201210307955.2A patent/CN102809680B/zh active Active
-
2013
- 2013-08-23 US US14/405,449 patent/US9679726B2/en active Active
- 2013-08-23 GB GB1421898.6A patent/GB2517368B/en active Active
- 2013-08-23 WO PCT/CN2013/000998 patent/WO2014032395A1/zh active Application Filing
- 2013-08-23 IN IN10380DEN2014 patent/IN2014DN10380A/en unknown
-
2014
- 2014-12-17 PH PH12014502807A patent/PH12014502807B1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2050172U (zh) * | 1989-03-21 | 1989-12-27 | 宋荣海 | 识别交直流低电位的试电笔 |
CN101158701A (zh) * | 2007-11-16 | 2008-04-09 | 中国科学院电工研究所 | 高压系统电压及绝缘电阻测量电路 |
CN201331563Y (zh) * | 2008-12-12 | 2009-10-21 | 青岛四方车辆研究所有限公司 | Dc600v在线绝缘检测装置 |
CN201562001U (zh) * | 2009-09-18 | 2010-08-25 | 哈尔滨九洲电气股份有限公司 | 中压变频器直流母线电压采样装置 |
CN102809680A (zh) * | 2012-08-27 | 2012-12-05 | 北京四方继保自动化股份有限公司 | 一种抗干扰开关量传输电路 |
Also Published As
Publication number | Publication date |
---|---|
US9679726B2 (en) | 2017-06-13 |
GB2517368B (en) | 2020-06-17 |
GB201421898D0 (en) | 2015-01-21 |
PH12014502807A1 (en) | 2015-03-02 |
US20150137620A1 (en) | 2015-05-21 |
GB2517368A (en) | 2015-02-18 |
PH12014502807B1 (en) | 2015-03-02 |
IN2014DN10380A (zh) | 2015-08-14 |
CN102809680B (zh) | 2015-01-21 |
CN102809680A (zh) | 2012-12-05 |
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