CN102244374A - Intelligent digital-variable delayed anti-flashover device - Google Patents
Intelligent digital-variable delayed anti-flashover device Download PDFInfo
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- CN102244374A CN102244374A CN2011101994877A CN201110199487A CN102244374A CN 102244374 A CN102244374 A CN 102244374A CN 2011101994877 A CN2011101994877 A CN 2011101994877A CN 201110199487 A CN201110199487 A CN 201110199487A CN 102244374 A CN102244374 A CN 102244374A
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Abstract
The invention discloses an intelligent digital-variable delayed anti-flashover device, comprising a variable rectification output unit A, a quick charge energy-storage voltage-stabilization and voltage detection unit B, an MCU (microprogrammed control unit) intelligence algorithm and an on-off sensor detection unit C, a display and keying unit D and a coil driving unit E. Under the condition that the structure of an AC (alternating current) contactor is not damaged, the device provided by the invention learns and acquires DC (direct current) parameters of the AC contactor automatically and reduces the power consumption of the contactor maximally in accordance with an MCU soft algorithm; and according to user demands, any off-delay operation drop-out time can be set and flashover times memory can be realized within 0-9.9 seconds.
Description
Technical field
The present invention relates to energy-conservation and protective device, be specifically related to a kind of digital variable intelligent anti-shake electric installation of delaying time for the distribution field.
Background technology
The driving of contactor is divided into DC driven and AC driving, and the characteristics of DC driven are the coil impedance height, need carry out ac-dc conversion in the major applications occasion.AC driving is simply direct, and the coil AC impedance is low, saves material cost.In order to overcome the rolling electrical phenomena, the contactor of most of in actual applications employing delay cut-off is protected, and the advantage of protection is to change AC driving into low-voltage direct to drive, and overcomes shortcomings such as AC driving vibrations, noise and power consumption are big.The DC driven of A.C. contactor needs relative higher voltage when the startup of contactor, only need low pressure to keep action after the startup, burns if long-term high pressure can make ac contactor coil heat up.The A.C. contactor direct current starting resistor difference of different model, sustaining voltage difference, release voltage difference, existing anti-shake point apparatus need be according to different A.C. contactors, dispose different startup time-delay mechanisms, most of product reaches startup and hold mode by revising the contactor coil structure.In order to overcome the shortcoming of existing product, digital intelligent anti-shake electric installation is discerned the characteristic of A.C. contactor automatically, and versatility is good, and the 0-9.9s delay time that cuts off the power supply is arbitrarily set, and low in energy consumption, the built-in energy storage device life-span is long, specially for this reason sets forth following the invention.
Summary of the invention
Need change different device shortcomings in order to have overcome different model A.C. contactor of the prior art, the invention provides a kind of digital variable intelligent anti-shake electric installation of delaying time, solve the energy consumption that can not optimize coil and the coil parameter identification that exist in the prior art, problems such as time-delay inaccuracy, when line powering energy storage voltage stabilizing just often, under powering-off state appearred in circuit, any user of hold-in winding discharged after setting 0-9.9s time adhesive, simultaneously the rolling electrical phenomena was counted.
Technical scheme of the present invention is as follows:
A kind of digital variable intelligent anti-shake electric installation of delaying time, include variable rectification output unit UNIT A, quick charge energy storage voltage stabilizing and voltage detection unit UNIT B, MCU intelligent algorithm and break-make sensor unit UNIT C, show and push-button unit UNIT D and coil drive unit UNIT E, it is characterized in that: described variable rectification output unit UNIT A comprises the wiring of drawing from the 220V AC power, be connected in series insurance F1 in the described wiring successively, be input to by controllable silicon SCR 1 after protection piezo-resistance RV1 and the harmonic filtration capacitor C 6, SCR2 and diode VD1, the controlled rectification full-bridge circuit that VD2 forms, the two ends of described controlled rectification full-bridge circuit are parallel with diode VD3 and adjustable resistance RV5 respectively, wherein diode VD3 is the ac contactor coil release guard, and adjustable resistance RV5 is a DC over-voltage protection; Also comprise transformer T1, the elementary of transformer T1 connects outside 220VAC AC power through the XJ1 terminal, the two ends of transformer T1 secondary coil are connected with diode VD4 and VD5 by lead respectively, diode VD4 and VD5 are rectified into the waveform of the pulse sampling voltage of the elementary terminals input of transformer T1 and controllable silicon SCR 1 and the synchronous dc pulse waveform of SCR2, behind resistance R 4 and diode VD11, become trapezoidal wave successively then, the trapezoidal wave that obtains passes through double base diode VT5 and resistance R 1 again, R2, R3, become the variable-angle trigger impulse after the capacitor C 7, then through triggering controllable silicon SCR 1, the variable dc pulse moving voltage of output behind the SCR2;
Described MCU intelligent algorithm and break-make sensor unit UNIT C comprise MCU(D2), the pulse sampling voltage of described transformer T1 output is exported the 3.3V direct current simultaneously and is given MCU(D2 behind isolating diode VD16) power supply;
Described quick charge energy storage voltage stabilizing and voltage detection unit UNIT B comprise capacitor C 2, C3, the pulse sampling voltage of transformer T1 output successively through diode VD4, VD5 rectification after thermistor RV4, recover to be input to capacitor C 2, C3 behind insurance RV3, RV2, the isolating diode VD9 certainly, give capacitor C 2, C3 quick charge; Also comprise voltage comparator LM393, capacitor C 2, C3 are full of the power supply of electricity back service voltage comparator LM393, voltage comparator LM393 detects the power-off signal of alternating current input power supplying VDD, detection triggers MCU(D2) produce and interrupt, enter contactor time-delay hold mode;
Described demonstration and push-button unit UNIT D comprise charactron H1, by MCU(D2) send bit code, 74HC595 sends segment encode through shift register; Also comprise button S1, S2, described button S1, S2 are by lead and MCU(D2) link to each other, wherein button S1 is a setting key, button S2 is used for the setting to delay time for adding/subtract key;
Described coil drive unit UNIT E comprises bistable relay K1, start adhesive during initialization, after reaching the outage delay time, MCU(D2) drive the dropout trigger impulse that triode VT4 produces bistable relay K1, the bistable relay K1 release of cutting off the power supply.
The described digital variable intelligent anti-shake electric installation of delaying time, it is characterized in that: by the rectification of MCU control half-bridge, scanning and output 0-200V direct voltage, automatically write down the minimum starting resistor of direct current and the minimum hold-in voltage of the external A.C. contactor of XJ2 terminal, and described characteristic by the external A.C. contactor of XJ2 terminal is stored in study automatically, simultaneously to super capacitor fast charging and voltage stabilizing, for shake electronic as the time delayed releasing institute energy requirement is provided.
The described digital variable intelligent anti-shake electric installation of delaying time, it is characterized in that: MCU(D2) can be the single-chip microcomputer of any model, the external break-make transducer of XJ5 terminal can be auxiliary normally opened contact or the plug-in normally opened contact by the external A.C. contactor of XJ2 terminal.
Pass through MCU(D2) intelligently variable current output is carried out in the direct current rectification, characteristic according to different A.C. contactors, automatically calculate startup, maintenance and drop away voltage, and carry out the parameter storage at the A.C. contactor of this model, the A.C. contactor direct current low-power consumption of this model is kept, save the energy to greatest extent.According to the time-delay of user's setting, under the instant cut-off situation, the dropout precise time that automatic time delay is set.
Under the structure situation of not destroying existing A.C. contactor, automatically obtain the dc parameter of A.C. contactor, and, reduce the power consumption of contactor to greatest extent according to the software algorithm of MCU, according to user's needs, the advantages such as delayed releasing time set, the electric number of times memory of rolling of cutting off the power supply arbitrarily in the 0-9.9s.
Variable rectification output unit UNIT A is by the output size of MCU control voltage, the coil of while coil drive unit UNIT E A.C. contactor, MCU is not before determining the ac contactor coil parameter, dropout/attracting state of controlling variable rectification output unit UNIT A and UNIT C unit contactor detects, the parameter of the A.C. contactor of automatic scan control.Preserve the starting resistor and the minimum sustaining voltage parameter of this type contactor after scanning is finished, reach optimum energy-saving effect.
Existing anti-shake Denso is equipped with rectifying part (unit UNIT A), but be coil by transforming A.C. contactor for starting and two kinds of coils of retaining part, realize starting and keep.What the present invention adopted is the loop construction that does not change existing A.C. contactor, realizes a kind of general A.C. contactor anti-shake electric installation.
Existing anti-shake electric installation has plenty of by internal battery realizes that the time-delay of momentary power failure keeps (unit UNIT B), what the present invention adopted is the time-delay that super capacitor and quick charge energy storage realize momentary power failure, do not need to change advantages such as battery, long service life.
Existing anti-shake electric installation does not have MCU circuit part (unit UNIT C), can not optimize the starting resistor and the minimum sustaining voltage of A.C. contactor, can not optimize the power consumption of A.C. contactor.The present invention adopts the minimum direct current starting resistor and the minimum direct current sustaining voltage of MCU automatic scan A.C. contactor.Automatically store various types of A.C. contactor DC characteristic voltage parameters, the A.C. contactor kind of study storage can reach several thousand kinds.Optimize the power consumption of A.C. contactor, realize maximum energy-saving effect.
Existing anti-shake electric installation has demonstration and push-button unit (unit UNIT D) individually, and function is generally less, only is used for setting time-delay.Keyboard display unit among the present invention can realize setting time-delay, rolling electricity counting, contactor model query function.
Existing anti-shake electric installation is by the direct contactor DC driven behind the direct current (unit UNIT E), and what the present invention adopted is the indirect driving that contactor coil passes through bistable relay, only consumes extremely low energy in the startup of coil with when taking off mouthful.
The installation method of digital intelligent anti-shake electricity of the present invention is as follows:
The first step: electrifying startup DC driven A.C. contactor action;
. this step can comprise the following steps: (1), quick charge accumulation of energy again; (2), LDO voltage stabilizing output;
Second step: initialization MCU; (1), whether needs to produce new study; (2), the DC driven minimum hold-in voltage of scanning A.C. contactor; (3), the DC driven minimum driving voltage of scanning A.C. contactor; (4), the direct voltage characteristic of study and storage A.C. contactor.
The 3rd step: the DC characteristic of known A.C. contactor, directly starting drive;
The 4th step: the user sets the outage delay time, confirms operation.
Beneficial effect of the present invention:
Compared with prior art, the present invention has obtained digital accurate delay and can be provided with, and the progress that the A.C. contactor performance is discerned automatically, learns, stored and optimizes has reached energy-conservation and easy to use effect, save the cost that A.C. contactor is transformed, improved versatility or the like.
Description of drawings
Fig. 1 is implementation figure of the present invention.
Fig. 2 is circuit theory diagrams of the present invention (comprising rectification output unit UNIT A and quick charge energy storage voltage stabilizing and voltage detection unit UNIT B).
Fig. 3 is circuit theory diagrams of the present invention (comprising MCU intelligent algorithm and break-make sensor unit UNIT C, demonstration and push-button unit UNIT D and coil drive unit UNIT E).
Fig. 4 is a software flow pattern of the present invention.
Embodiment
Referring to Fig. 1,2,3, a kind of digital variable intelligent anti-shake electric installation of delaying time, include variable rectification output unit UNIT A, quick charge energy storage voltage stabilizing and voltage detection unit UNIT B, MCU intelligent algorithm and break-make sensor unit UNIT C, show and push-button unit UNIT D and coil drive unit UNIT E, variable rectification output unit UNIT A comprises the wiring of drawing from the 220V AC power, be connected in series insurance F1 in the wiring successively, be input to by controllable silicon SCR 1 after protection piezo-resistance RV1 and the harmonic filtration capacitor C 6, SCR2 and diode VD1, the controlled rectification full-bridge circuit that VD2 forms, the two ends of controlled rectification full-bridge circuit are parallel with diode VD3 and adjustable resistance RV5 respectively, wherein diode VD3 is the ac contactor coil release guard, and adjustable resistance RV5 is a DC over-voltage protection; Also comprise transformer T1, the elementary of transformer T1 connects outside 220VAC AC power through the XJ1 terminal, the two ends of transformer T1 secondary coil are connected with diode VD4 and VD5 by lead respectively, diode VD4 and VD5 are rectified into the waveform of the pulse sampling voltage of the elementary terminals input of transformer T1 and controllable silicon SCR 1 and the synchronous dc pulse waveform of SCR2, behind resistance R 4 and diode VD11, become trapezoidal wave successively then, the trapezoidal wave that obtains passes through double base diode VT5 and resistance R 1 again, R2, R3, become the variable-angle trigger impulse after the capacitor C 7, then through triggering controllable silicon SCR 1, the variable dc pulse moving voltage of output behind the SCR2;
MCU intelligent algorithm and break-make sensor unit UNIT C comprise MCU(D2), the pulse sampling voltage of transformer T1 output is exported the 3.3V direct current simultaneously and is given MCU(D2 behind isolating diode VD16) power supply;
Quick charge energy storage voltage stabilizing and voltage detection unit UNIT B comprise capacitor C 2, C3, the pulse sampling voltage of transformer T1 output successively through diode VD4, VD5 rectification after thermistor RV4, recover to be input to capacitor C 2, C3 behind insurance RV3, RV2, the isolating diode VD9 certainly, give capacitor C 2, C3 quick charge; Also comprise voltage comparator LM393, capacitor C 2, C3 are full of the power supply of electricity back service voltage comparator LM393, voltage comparator LM393 detects the power-off signal of alternating current input power supplying VDD, detection triggers MCU(D2) produce and interrupt, enter contactor time-delay hold mode;
Demonstration and push-button unit UNIT D comprise charactron H1, by MCU(D2) send bit code, 74HC595 sends segment encode through shift register; Also comprise button S1, S2, button S1, S2 are by lead and MCU(D2) link to each other, wherein button S1 is a setting key, button S2 is used for the setting to delay time for adding/subtract key, has the preservation of study new type contactor and the function of checking the electric number of times of rolling;
Coil drive unit UNIT E comprises bistable relay K1, starts adhesive during initialization, after reaching the outage delay time, MCU(D2) drives the dropout trigger impulse that triode VT4 produces bistable relay K1, the bistable relay K1 release of cutting off the power supply.
By the rectification of MCU control half-bridge, scanning and output 0-200V direct voltage, automatically write down the minimum starting resistor of direct current and the minimum hold-in voltage of the external A.C. contactor of XJ2 terminal, and automatic study storage is by the characteristic of the external A.C. contactor of XJ2 terminal, simultaneously to super capacitor fast charging and voltage stabilizing, for shake electronic as the time delayed releasing institute energy requirement is provided.
MCU(D2) can be the single-chip microcomputer of any model, the external break-make transducer of XJ5 terminal can be auxiliary normally opened contact or the plug-in normally opened contact by the external A.C. contactor of XJ2 terminal.
Referring to Fig. 4, software processes step of the present invention is as follows:
Steps A: power-up initializing;
Step B: whether this device of step inquiry needs study, if change step C, does not change step D;
Step C: the minimum sustaining voltage that scans this device;
Step D: judging whether to thread off, do not change step C over to, continue to reduce output voltage, is to change step e over to
Step e: preserve minimum sustaining voltage on drop away voltage one grade, the gear precision is 0.25V;
Step F: change the scanning lowest starting voltage over to;
Step G: judge whether adhesive, not adhesive continues to improve starting resistor, changes step F over to, and adhesive changes step H over to;
Step H: the lowest starting voltage of memory retrofit device changes step I and step J operation over to;
Step K: pressure regulation demonstration and keyboard are handled;
Step L: judging whether outage, do not change step I operation over to, is to change step O operation over to;
Step O: operation delayed releasing countdown subprogram.
Claims (3)
1. a digital variable intelligent anti-shake electric installation of delaying time, include variable rectification output unit UNIT A, quick charge energy storage voltage stabilizing and voltage detection unit UNIT B, MCU intelligent algorithm and break-make sensor unit UNIT C, show and push-button unit UNIT D and coil drive unit UNIT E, it is characterized in that: described variable rectification output unit UNIT A comprises the wiring of drawing from the 220V AC power, be connected in series insurance F1 in the described wiring successively, be input to by controllable silicon SCR 1 after protection piezo-resistance RV1 and the harmonic filtration capacitor C 6, SCR2 and diode VD1, the controlled rectification full-bridge circuit that VD2 forms, the two ends of described controlled rectification full-bridge circuit are parallel with diode VD3 and adjustable resistance RV5 respectively, wherein diode VD3 is the ac contactor coil release guard, and adjustable resistance RV5 is a DC over-voltage protection; Also comprise transformer T1, the elementary of transformer T1 connects outside 220VAC AC power through the XJ1 terminal, the two ends of transformer T1 secondary coil are connected with diode VD4 and VD5 by lead respectively, diode VD4 and VD5 are rectified into the waveform of the pulse sampling voltage of the elementary terminals input of transformer T1 and controllable silicon SCR 1 and the synchronous dc pulse waveform of SCR2, behind resistance R 4 and diode VD11, become trapezoidal wave successively then, the trapezoidal wave that obtains passes through double base diode VT5 and resistance R 1 again, R2, R3, become the variable-angle trigger impulse after the capacitor C 7, then through triggering controllable silicon SCR 1, the variable dc pulse moving voltage of output behind the SCR2;
Described MCU intelligent algorithm and break-make sensor unit UNIT C comprise MCU(D2), the pulse sampling voltage of described transformer T1 output is exported the 3.3V direct current simultaneously and is given MCU(D2 behind isolating diode VD16) power supply;
Described quick charge energy storage voltage stabilizing and voltage detection unit UNIT B comprise capacitor C 2, C3, the pulse sampling voltage of transformer T1 output successively through diode VD4, VD5 rectification after thermistor RV4, recover to be input to capacitor C 2, C3 behind insurance RV3, RV2, the isolating diode VD9 certainly, give capacitor C 2, C3 quick charge; Also comprise voltage comparator LM393, capacitor C 2, C3 are full of the power supply of electricity back service voltage comparator LM393, voltage comparator LM393 detects the power-off signal of alternating current input power supplying VDD, detection triggers MCU(D2) produce and interrupt, enter contactor time-delay hold mode;
Described demonstration and push-button unit UNIT D comprise charactron H1, by MCU(D2) send bit code, 74HC595 sends segment encode through shift register; Also comprise button S1, S2, described button S1, S2 are by lead and MCU(D2) link to each other, wherein button S1 is a setting key, button S2 is used for the setting to delay time for adding/subtract key;
Described coil drive unit UNIT E comprises bistable relay K1, start adhesive during initialization, after reaching the outage delay time, MCU(D2) drive the dropout trigger impulse that triode VT4 produces bistable relay K1, the bistable relay K1 release of cutting off the power supply.
2. the digital variable according to claim 1 intelligent anti-shake electric installation of delaying time, it is characterized in that: by the rectification of MCU control half-bridge, scanning and output 0-200V direct voltage, automatically write down the minimum starting resistor of direct current and the minimum hold-in voltage of the external A.C. contactor of XJ2 terminal, and described characteristic by the external A.C. contactor of XJ2 terminal is stored in study automatically, simultaneously to super capacitor fast charging and voltage stabilizing, for shake electronic as the time delayed releasing institute energy requirement is provided.
3. the digital variable according to claim 1 intelligent anti-shake electric installation of delaying time, it is characterized in that: MCU(D2) can be the single-chip microcomputer of any model, the external break-make transducer of XJ5 terminal can be auxiliary normally opened contact or the plug-in normally opened contact by the external A.C. contactor of XJ2 terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101994877A CN102244374B (en) | 2011-07-16 | 2011-07-16 | Intelligent digital-variable delayed anti-flashover device |
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| CN2011101994877A CN102244374B (en) | 2011-07-16 | 2011-07-16 | Intelligent digital-variable delayed anti-flashover device |
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| CN102244374A true CN102244374A (en) | 2011-11-16 |
| CN102244374B CN102244374B (en) | 2013-12-11 |
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Cited By (1)
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| CN114050545A (en) * | 2021-10-30 | 2022-02-15 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Arbitrarily combined delay control circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114050545A (en) * | 2021-10-30 | 2022-02-15 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Arbitrarily combined delay control circuit |
| CN114050545B (en) * | 2021-10-30 | 2023-09-26 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Delay control circuit |
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Effective date of registration: 20170816 Address after: Ji Road in Shushan District of Hefei City, Anhui Province, No. 335 230031 Patentee after: Hefei Tianhai Electrical Technology Co., Ltd. Address before: 230000 Anhui city of Hefei province Shushan new industrial park Daoxiang road and coral road junction Patentee before: Hefei Tianhai Electrical Technology Co., Ltd. |
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