CN101949991B - Closing control lead short-circuit detecting device - Google Patents
Closing control lead short-circuit detecting device Download PDFInfo
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- CN101949991B CN101949991B CN2010102981121A CN201010298112A CN101949991B CN 101949991 B CN101949991 B CN 101949991B CN 2010102981121 A CN2010102981121 A CN 2010102981121A CN 201010298112 A CN201010298112 A CN 201010298112A CN 101949991 B CN101949991 B CN 101949991B
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Abstract
The invention provides a closing control lead short-circuit detecting device which comprises a closing device, an AC and DC detecting device, a control circuit and an alarm device, wherein a closing button in the closing device is connected with a unidirectional voltage diode in series; after detecting an AC signal, the AC and DC detecting device can give a command and stop starting the control circuit and controls the alarm device to give an alarm; when detecting a DC signal, the AC and DC detecting device gives a command to start the control circuit. Therefore, the invention can provide a closing control lead short-circuit detecting device which can control a lead short-circuit device not to start by closing and ensure the safety.
Description
Technical field
The present invention relates to a kind of pick-up unit, particularly a kind of device that detects the control lead short circuit of closing a floodgate.
Background technology
Be Long-distance Control owing to close a floodgate in some places, for example driving, colliery are with electromagnetic starter etc., and the control lead-in wire is long, and fortuitous event causes lead short circuit, and equipment initiates self ubiquity, and is accidents caused, and be serious even cause casualties, and can not be ignored.Present startup combined floodgate control loop all adopts switch knob closed, the device start operation; And the control lead-in wire that closes a floodgate is short-circuited, and equipment starts operation equally, and this is that people are undesirable; In case the control lead-in wire is short-circuited; And major accident may take place, even cause casualties in the equipment operation of need not closing a floodgate this moment.Referring to Fig. 1, no matter be to press the button 1 to close a floodgate, lead-in wire 2 short circuits of still closing a floodgate, relay J all can adhesive, thereby causes accident to take place.
Summary of the invention
To the defective of above-mentioned prior art, the purpose of this invention is to provide a kind of combined floodgate control lead short circuit equipment and do not start operation, guarantee the combined floodgate control lead short circuit pick-up unit of safety.
For achieving the above object, the present invention adopts following technical scheme:
A kind of combined floodgate control lead short circuit pick-up unit; Comprise closing device, alternating current-direct current pick-up unit; Control loop and warning device, the switch knob Series Sheet in the said closing device are to voltage diode, and said alternating current-direct current pick-up unit detects AC signal; Send instruction and do not start said control loop work, and make said warning device report to the police; Detect direct current signal, send instruction and start said control loop work.
The circuit of combined floodgate control lead short circuit pick-up unit of the present invention is wherein controlled power lead and is connected the combined floodgate control lead-in wire of parallel connection and second contact of relay, and closing a floodgate connects switch knob and unidirectional voltage diode between the control lead-in wire successively; The other end of said unidirectional voltage diode connects an end of the 3rd resistance, and the other end of said the 3rd resistance is respectively successively through first voltage stabilizing diode and the 3rd voltage stabilizing diode ground connection, through first capacity earth; Through the 5th resistance eutral grounding, and the pin 10 of concatenation operation amplifier, the pin 3 of the pin 10 concatenation operation amplifiers of operational amplifier; Pin 9 ground connection of operational amplifier, the pin 8 of operational amplifier is connected the second electrochemical capacitor ground connection through the 6th resistance of parallel connection with second diode, the pin 12 of the other end concatenation operation amplifier of the 6th resistance; The pin 13 of operational amplifier connects power supply through the 9th resistance respectively, and through the 11 resistance eutral grounding, the pin 14 of operational amplifier connects the pin 2 of second operational amplifier; The pin 7 of the pin 3 concatenation operation amplifiers of second operational amplifier; The pin 8 of second operational amplifier connects power supply, pin 4 ground connection of second operational amplifier, and the pin 1 of second operational amplifier is successively through the 12 resistance and the 4th light emitting diode ground connection; The pin 14 of operational amplifier also connects the tenth resistance; The other end of said the tenth resistance connects the base stage of triode respectively through second voltage stabilizing diode, through the pin 7 of the 3rd diode concatenation operation amplifier, the grounded emitter of said triode; The collector of said triode connects an end of said relay; First contact of said relay connects control loop, and the other end of said relay connects power supply, and the pin 6 of operational amplifier connects power supply through second resistance; Successively through the 8th resistance and the 7th resistance of parallel connection and the pin 5 of the 3rd electrochemical capacitor concatenation operation amplifier; The pin 5 of said operational amplifier is through the pin 1 of the first diode concatenation operation amplifier, and the pin 4 of operational amplifier connects power supply, pin 11 ground connection of operational amplifier; The pin 2 of operational amplifier connects power supply through the 4th resistance eutral grounding through first resistance.
Combined floodgate control lead short circuit pick-up unit of the present invention, wherein said operational amplifier adopts low consumed power operational amplifier LM224, and said second operational amplifier adopts dual operational amplifier LM258.
Combined floodgate control lead short circuit pick-up unit of the present invention, wherein said power supply is 12V.
Because the present invention only presses switch knob, just adhesive of relay, control loop equipment could work, and the control of closing a floodgate goes between and is short-circuited, and relay can adhesive, and control loop equipment does not move, and lights trouble light simultaneously, reports to the police, and avoids the accident generation.
Description of drawings
Fig. 1 is the circuit diagram that closes a floodgate in the prior art;
Fig. 2 is the close a floodgate circuit block diagram of control lead short circuit pick-up unit of the present invention;
Fig. 3 is the close a floodgate circuit diagram of control lead short circuit pick-up unit of the present invention.
Embodiment
Below in conjunction with accompanying drawing the close a floodgate embodiment of control lead short circuit pick-up unit of the present invention is elaborated.
Referring to Fig. 2; Combined floodgate control lead short circuit pick-up unit of the present invention comprises closing device 101, alternating current-direct current pick-up unit 102, control loop 103 and warning device 104, and the switch knob Series Sheet in the closing device 101 is to voltage diode; Guarantee to start the employing direct current; Guarantee that alternating current-direct current pick-up unit 102 detects AC signal, send not start-up control loop 103 work of instructing, and make warning device 104 report to the police.Detect direct current signal, send instruction, 103 work of start-up control loop.
Referring to Fig. 3, the circuit of combined floodgate control lead short circuit pick-up unit of the present invention, the control power lead connects the combined floodgate control lead-in wire 2a of parallel connection and the second contact J-2 of relay J, closes a floodgate to connect switch knob 1a and unidirectional voltage diode 3 successively between the control lead-in wire 2a.The other end of unidirectional voltage diode 3 connects an end of the 3rd resistance R 3; The other end of the 3rd resistance R 3 is respectively successively through the first voltage stabilizing diode V1 and the 3rd voltage stabilizing diode V3 ground connection, through first capacitor C, 1 ground connection, through the 5th resistance R 5 ground connection; And the pin 10 of concatenation operation amplifier; Operational amplifier adopts low consumed power operational amplifier LM224, the pin 3 of the pin 10 concatenation operation amplifiers of operational amplifier, pin 9 ground connection of operational amplifier; The pin 8 of operational amplifier is connected the second electrochemical capacitor C2 ground connection through the 6th resistance R 6 of parallel connection with the second diode D2; The pin 12 of the other end concatenation operation amplifier of the 6th resistance R 6, the pin 13 of operational amplifier connect the 12V power supply through the 9th resistance R 9 respectively, through the 11 resistance R 11 ground connection.The pin 14 of operational amplifier connects the pin 2 of second operational amplifier; Second operational amplifier adopts dual operational amplifier LM258; The pin 7 of the pin 3 concatenation operation amplifiers of second operational amplifier; The pin 8 of second operational amplifier connects the 12V power supply, pin 4 ground connection, and pin 1 is successively through the 12 resistance R 12 and the 4th light emitting diode D4 ground connection.The pin 14 of operational amplifier also connects the tenth resistance R 10; The other end of the tenth resistance R 10 connects the base stage of triode Q1 respectively through the second voltage stabilizing diode V2; Pin 7 through the 3rd diode D3 concatenation operation amplifier; The grounded emitter of triode Q1, the end of the collector connecting relay J of triode Q1, the first contact J-1 of relay J connects control loop.The other end of relay J connects the 12V power supply; The pin 6 of operational amplifier connects the 12V power supply through second resistance R 2, and successively through the 8th resistance R 8 and the 7th resistance R 7 of parallel connection and the pin 5 of the 3rd electrochemical capacitor C3 concatenation operation amplifier, the pin 5 of operational amplifier is through the pin 1 of the first diode D1 concatenation operation amplifier; The pin 4 of operational amplifier connects the 12V power supply; Pin 11 ground connection, pin 2 connects the 12V power supply through the 4th resistance R 4 ground connection through first resistance R 1.
When not according to switch knob 1a, the U1A output low level in the operational amplifier, U1B is output low level also, and this moment is no matter U1D output is high level or low level, because the clamper of the 3rd diode D3, triode Q1 all the time can conducting, not adhesive of relay J.
When closing a floodgate control lead-in wire 2a short circuit, because the control lead-in wire 2a short circuit of closing a floodgate, the positive input of U1C is an AC signal; U1C output high level during positive half cycle, U1C output low level during negative half period forms square wave; Behind the 6th resistance R 6, the second electrochemical capacitor capacitor C, 2 integrations, voltage is very low, the U1D output low level; Triode Q1 can conducting, not adhesive of relay J.Simultaneously U1A also exports square wave, but because the existence of the first diode D1, and the 3rd electrochemical capacitor C3 hematocrit that powers on is tired; To certain the time; U1B will export high level, and the U2A positive input is a high level like this, and reverse input end is a low level; U2A exports high level, and lighting malfunction indicator lamp is that the 4th light emitting diode D4 reports to the police.
When normally pressing switch knob 1a, owing to there is unidirectional voltage diode 3 to carry out rectification, the negative half period of AC signal is eliminated; The reverse input end of U1C is 0V, and positive input is higher than 0V all the time, and U1C exports high level all the time; Be direct current signal, U1D also exports high level; U1A output square wave in addition, but because the existence of the first diode D1, the 3rd electrochemical capacitor C3 hematocrit that powers on is tired, and to certain the time, U1B will export high level, and two-way all is a high level, triode Q1 conducting, relay J adhesive, equipment operation.
This shows, only press switch knob 1a, just adhesive of relay J in manual work; Control loop equipment could be worked, and the control lead-in wire 2a that closes a floodgate is short-circuited, and relay J can adhesive; Control loop equipment does not move; And light i.e. the 4th light emitting diode D4 of trouble light simultaneously, and report to the police, avoid accident to take place.
Above embodiment describes preferred implementation of the present invention; Be not that scope of the present invention is limited; Design under the prerequisite of spirit not breaking away from the present invention; Various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (3)
1. a combined floodgate is controlled the lead short circuit pick-up unit; Comprise closing device (101), alternating current-direct current pick-up unit (102), control loop (103) and warning device (104) is characterized in that; Switch knob Series Sheet in the said closing device (101) is to voltage diode; Said alternating current-direct current pick-up unit (102) detects AC signal, sends instruction and does not start said control loop (103) work, and make said warning device (104) report to the police; Detect direct current signal, send instruction and start said control loop (103) work; The control power lead connects the combined floodgate control lead-in wire (2a) of parallel connection and second contact (J-2) of relay (J), and closing a floodgate connects switch knob (1a) and unidirectional voltage diode (3) between the control lead-in wire (2a) successively, and the other end of said unidirectional voltage diode (3) connects an end of the 3rd resistance (R3); The other end of said the 3rd resistance (R3) is respectively successively through first voltage stabilizing diode (V1) and the 3rd voltage stabilizing diode (V3) ground connection, through first electric capacity (C1) ground connection, through the 5th resistance (R5) ground connection; And the pin 10 of concatenation operation amplifier; The pin 3 of the pin 10 concatenation operation amplifiers of operational amplifier, pin 9 ground connection of operational amplifier, the pin 8 of operational amplifier is connected second electrochemical capacitor (C2) ground connection through the 6th resistance (R6) of parallel connection with second diode (D2); The pin 12 of the other end concatenation operation amplifier of the 6th resistance (R6); The pin 13 of operational amplifier connects power supply through the 9th resistance (R9) respectively, and through the 11 resistance (R11) ground connection, the pin 14 of operational amplifier connects the pin 2 of second operational amplifier; The pin 7 of the pin 3 concatenation operation amplifiers of second operational amplifier; The pin 8 of second operational amplifier connects power supply, pin 4 ground connection of second operational amplifier, and the pin 1 of second operational amplifier is successively through the 12 resistance (R12) and the 4th light emitting diode (D4) ground connection; The pin 14 of operational amplifier also connects the tenth resistance (R10); The other end of said the tenth resistance (R10) connects the base stage of triode (Q1) respectively through second voltage stabilizing diode (V2), through the pin 7 of the 3rd diode (D3) concatenation operation amplifier, the grounded emitter of said triode (Q1); The collector of said triode (Q1) connects an end of said relay (J); First contact (J-1) of said relay (J) connects control loop, and the other end of said relay (J) connects power supply, and the pin 6 of operational amplifier connects power supply through second resistance (R2); Successively through the 8th resistance (R8) and the 7th resistance (R7) of parallel connection and the pin 5 of the 3rd electrochemical capacitor (C3) concatenation operation amplifier; The pin 5 of said operational amplifier is through the pin 1 of first diode (D1) concatenation operation amplifier, and the pin 4 of operational amplifier connects power supply, pin 11 ground connection of operational amplifier; The pin 2 of operational amplifier is through the 4th resistance (R4) ground connection, and (R1) connects power supply through first resistance.
2. combined floodgate control lead short circuit pick-up unit according to claim 1 is characterized in that said operational amplifier adopts low consumed power operational amplifier LM224, and said second operational amplifier adopts dual operational amplifier LM258.
3. combined floodgate control lead short circuit pick-up unit according to claim 2 is characterized in that said power supply is 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102981121A CN101949991B (en) | 2010-09-30 | 2010-09-30 | Closing control lead short-circuit detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102981121A CN101949991B (en) | 2010-09-30 | 2010-09-30 | Closing control lead short-circuit detecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101949991A CN101949991A (en) | 2011-01-19 |
| CN101949991B true CN101949991B (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102981121A Expired - Fee Related CN101949991B (en) | 2010-09-30 | 2010-09-30 | Closing control lead short-circuit detecting device |
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| CN (1) | CN101949991B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490383A (en) * | 2013-10-09 | 2014-01-01 | 兰如根 | Automatic direct-current power source output short circuit protection device |
Citations (7)
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|---|---|---|---|---|
| CN1253668A (en) * | 1997-04-25 | 2000-05-17 | 西门子公司 | Device for liming AC, especially during short circuits |
| JP2004093259A (en) * | 2002-08-30 | 2004-03-25 | Takumi Electric Inc Co | Circuit for detecting conduction state of lead |
| CN1761116A (en) * | 2004-10-11 | 2006-04-19 | 上海亿盟电气自动化技术有限公司 | Trip of making current |
| CN200947395Y (en) * | 2006-06-28 | 2007-09-12 | 高恩波 | Testing switch closing transmission informing device |
| CN201194326Y (en) * | 2008-02-15 | 2009-02-11 | 陈肖荣 | Protection apparatus preventing reverse connection for DC power source |
| DE102008056864A1 (en) * | 2008-11-12 | 2010-05-20 | Hella Kgaa Hueck & Co. | Method for protecting e.g. direct current/direct current-converter of motor vehicle, against polarity, involves comparing measured current with switching value, and opening switch if measured current is smaller than switching value |
| CN201819961U (en) * | 2010-09-30 | 2011-05-04 | 淮南市博泰矿山电器有限公司 | Device for detecting short circuit detection of switch-on control lead wire |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0815359A (en) * | 1994-06-24 | 1996-01-19 | Yamatake Honeywell Co Ltd | Corrosion degree sensor |
| US6960916B2 (en) * | 2003-11-25 | 2005-11-01 | Walker Michael L | Circuit breaker overcurrent and ground fault test apparatus |
-
2010
- 2010-09-30 CN CN2010102981121A patent/CN101949991B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253668A (en) * | 1997-04-25 | 2000-05-17 | 西门子公司 | Device for liming AC, especially during short circuits |
| JP2004093259A (en) * | 2002-08-30 | 2004-03-25 | Takumi Electric Inc Co | Circuit for detecting conduction state of lead |
| CN1761116A (en) * | 2004-10-11 | 2006-04-19 | 上海亿盟电气自动化技术有限公司 | Trip of making current |
| CN200947395Y (en) * | 2006-06-28 | 2007-09-12 | 高恩波 | Testing switch closing transmission informing device |
| CN201194326Y (en) * | 2008-02-15 | 2009-02-11 | 陈肖荣 | Protection apparatus preventing reverse connection for DC power source |
| DE102008056864A1 (en) * | 2008-11-12 | 2010-05-20 | Hella Kgaa Hueck & Co. | Method for protecting e.g. direct current/direct current-converter of motor vehicle, against polarity, involves comparing measured current with switching value, and opening switch if measured current is smaller than switching value |
| CN201819961U (en) * | 2010-09-30 | 2011-05-04 | 淮南市博泰矿山电器有限公司 | Device for detecting short circuit detection of switch-on control lead wire |
Non-Patent Citations (1)
| Title |
|---|
| 吕国芳等.电力系统短路试验合闸角的准确控制.《江苏电机工程》.2006,第25卷(第1期),第20－23页. * |
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| CN101949991A (en) | 2011-01-19 |
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