CN201514560U - Circuit of intelligent plastic case relay controller - Google Patents
Circuit of intelligent plastic case relay controller Download PDFInfo
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- CN201514560U CN201514560U CN2009201897682U CN200920189768U CN201514560U CN 201514560 U CN201514560 U CN 201514560U CN 2009201897682 U CN2009201897682 U CN 2009201897682U CN 200920189768 U CN200920189768 U CN 200920189768U CN 201514560 U CN201514560 U CN 201514560U
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Abstract
The utility model relates to a circuit of an intelligent plastic case relay controller, which comprises a rectifying and filtering circuit, a power supply circuit, a trip circuit, a single chip circuit, a collecting circuit, a controlling and operating circuit and an auxiliary power supply circuit, wherein the power supply circuit comprises a DC Chopping voltage stabilizing circuit and a power-switching circuit, the single chip circuit adopts an MCU circuit, the controlling and operating circuit adopts a man-machine operating interface, the collecting circuit consists of four integrated amplifying circuits, a channel selecting circuit and a low-pass filtering circuit, the rectifying and filtering circuit and the auxiliary power supply circuit are connected with the input port of the power supply circuit respectively, and the output port of the power supply circuit is connected with the input ports of the collecting circuit, the single chip circuit, the trip circuit and the controlling and operating circuit respectively. By adopting the technical scheme, the circuit of the intelligent plastic case relay controller has the advantages of simplicity, low cost and excellent electromagnetic compatibility-proof property.
Description
Technical field
The utility model relates to a kind of intelligent plastic housing isolating switch, particularly a kind of circuit of intelligent plastic housing breaker controller.
Background technology
Low-voltage circuit breaker has become a kind of typical electromechanical integrated product, and wherein the protective value of breaker of plastic casing depends on the performance of electrical apparatus release to a great extent.Traditional breaker of plastic casing is to obtain different protective values, needs the different electrical apparatus release of configuration, and as electromagnetic release, thermal trip and delayed release, and the major defect of above-mentioned electrical apparatus release is actuation time and the protection precision is low, parameter tuning is difficult.
Research and development along with these those skilled in the art; some intelligent controllers have also appearred on the market; intelligent controller has fully adopted microprocessor technology; detection speed and precision have been improved greatly; it is very simple and direct that parameter tuning also becomes; and intelligent controller can realize the protective value of several traditional electrical apparatus releases, realized selectivity, quick-action, reliability and the security of protective value.
But present intelligent controller adopts and complicated electronic circuitry design for realizing above-mentioned advantage and improving anti-electromagnetic compatibility characteristic, causes integrated level and fiduciary level to reduce, wiring board takes up room greatly, cost of products is high.
Summary of the invention
At the deficiency that prior art exists, the utility model provides the circuit of the good intelligent plastic housing breaker controller of a kind of simple, with low cost, anti-electromagnetic compatibility characteristic.
For achieving the above object, the utility model provides following technical scheme: a kind of circuit of intelligent plastic housing breaker controller, include current rectifying and wave filtering circuit, power circuit, trip circuit, single chip circuit, Acquisition Circuit and control operation circuit, also include auxiliary power circuit, described power circuit includes DC chopped-wave mu balanced circuit and power-switching circuit, single chip circuit is MCU circuit and the required external circuit of MCU, the control operation circuit is a human-machine operation key face circuit, described Acquisition Circuit is by four integrated amplifiers, channel selection circuit and low-pass filter circuit constitute, described current rectifying and wave filtering circuit and auxiliary power circuit are connected with the input port of power circuit respectively, the output port of power circuit respectively with Acquisition Circuit, single chip circuit, the input port of trip circuit and control operation circuit connects, the output port of described Acquisition Circuit is connected with the input port of MCU circuit, constitute transmission, MCU circuit and the control operation circuit mutual conduction of signal.
The utility model further is set to: described power-switching circuit is DC-DC 5V circuit, DC-DC-5V circuit and DC-DC 3.3V circuit, described human-machine operation key face circuit comprises parameter tuning circuit, display circuit, described MCU circuit also is connected with the required external circuit of MCU, the output port of described power circuit is connected with the input port of the required external circuit of MCU, and the required external circuit of MCU includes reset circuit, external clock circuit, external crystal oscillation circuit, jtag interface, communication interface.
The utility model further is set to: described current rectifying and wave filtering circuit includes rectification circuit and filtering circuit, wherein diode D1-D8 constitutes rectification circuit, filter capacitor C9-C13 constitutes filtering circuit, the tip node of diode D1-D8 and filter capacitor C9-C12 is connected with junction block, other end contact is connected with power circuit, and ac current signal becomes direct current signal through diode D1-D8 and filter capacitor C9-C13.
The utility model further is set to: the DC chopped-wave mu balanced circuit in the described power circuit is by resistance D29-D32; capacitor C 14; metal-oxide-semiconductor Q1 and IC5 integrated circuit constitute; and control supply voltage; offer trip circuit; DC-DC 5V circuit; the DC-DC-5V circuit; DC-DC 3.3V circuit uses; capacitor C 15 is a storage capacitor; D10 is the protection diode; diode D13; D15A; D15B constitutes a power supply automatic selector switch; diode D15A when primary power and accessory power supply are powered simultaneously; D15B is oppositely by selecting the primary power power supply; diode D15A when primary power cuts out; the work of D15B conducting accessory power supply; filter capacitor C16-C19 and IC6 integrated circuit produce the power supply of a direct current 5V; filter capacitor C18-C21 and IC7 integrated circuit produce the power supply of a direct current-5V; offer IC1; IC2 and IC3; the IC4 integrated circuit uses; filter capacitor C22-C24 and IC8 integrated circuit produce the power supply of a direct current 3.3V, offer follow-up single chip circuit and control operation circuit.
The utility model further is set to: described trip circuit includes divider resistance R33, R34, anti-interference capacitor C25, metal-oxide-semiconductor Q2, sustained diode 11 and junction block J6, wherein magnetic flow convertor is connected on the J6 junction block, described Acquisition Circuit is through R1-R8, correspondence is connected to four identical amplifying circuits in the IC1 integrated circuit formation, wherein R9-R12 and IC3, the IC4 integrated circuit constitutes one greatly, little acquisition channel is selected circuit, resistance R 13-R20 and capacitor C 1-C8, the C33-C36 correspondence is connected to and constitutes four identical low-pass filter circuits in the IC2 integrated circuit, resistance R 21-R28 constitutes sampled voltage and promotes circuit, to satisfy the treatable signal of MCU.
The power supply source circuit used after current rectifying and wave filtering circuit became direct current signal with alternating current in the above-mentioned feature, the transient voltage of DC current after the rectification in power circuit suppresses diode, transient voltage suppresses diode can effectively suppress Conduction Interference in circuit, improve anti-electromagnetic compatibility characteristic; DC chopped-wave mu balanced circuit in the power circuit and power-switching circuit (DC-DC 5V circuit, DC-DC-5V circuit and DC-DC 3.3V circuit) wherein the DC chopped-wave mu balanced circuit can effectively prevent power supply overvoltage and surge, for trip circuit provides power supply, and provide energy compensating in magnetic flow convertor moment of threading off owing to be equipped with a storage capacitor C15, magnetic flow convertor is threaded off more reliably, the setting of auxiliary power circuit then is for power supply can continually be powered, and Acquisition Circuit is by four integrated amplifiers, channel selection circuit and low-pass filter circuit constitute the precision that can improve image data; The operation that is set to operating personnel of human-machine operation key face circuit provides convenience, and the MCU circuit can effectively improve the immunity to interference ability, has guaranteed the normal operation of total system, has improved the fiduciary level of isolating switch work greatly; The circuit design of low-power consumption; reduced the power consumption of intelligent controller; reduced the thermal value of power tube; improved the mean free error time of isolating switch; the more important thing is that low-power consumption can quicken the start-up time of intelligent controller, if isolating switch closes a floodgate when the distribution line failure state, this characteristic has ensured that intelligent controller starts defencive function rapidly; finish the disjunction of isolating switch, protected isolating switch when playing the protection distribution line again.
Below in conjunction with accompanying drawing the utility model is further described:
Description of drawings
Fig. 1 is the theory diagram of the utility model embodiment;
Fig. 2 is the circuit diagram of current rectifying and wave filtering circuit among the utility model embodiment;
Fig. 3 is the circuit diagram of power circuit among the utility model embodiment;
Fig. 4 is the circuit diagram of Acquisition Circuit among the utility model embodiment;
Fig. 5 is the circuit diagram of trip circuit among the utility model embodiment;
Fig. 6 is the circuit diagram of human-machine operation key face circuit among the utility model embodiment;
Fig. 7 is the circuit diagram of MCU circuit among the utility model embodiment;
Fig. 8 is the circuit diagram of the required peripheral circuit of MCU among the utility model embodiment.
Embodiment
The circuit of a kind of intelligent plastic housing breaker controller as shown in Figure 1, include current rectifying and wave filtering circuit, power circuit, trip circuit, single chip circuit, Acquisition Circuit and control operation circuit, also include auxiliary power circuit, described power circuit includes DC chopped-wave mu balanced circuit and power-switching circuit, single chip circuit is MCU circuit and the required external circuit of MCU, the control operation circuit is a human-machine operation key face circuit, described Acquisition Circuit is by four integrated amplifiers, channel selection circuit and low-pass filter circuit constitute, described current rectifying and wave filtering circuit and auxiliary circuit are connected with the input port of power circuit respectively, the output port of power circuit respectively with Acquisition Circuit, single chip circuit, the input port of trip circuit and human-machine operation key face circuit connects, the output port of described Acquisition Circuit is connected with the input port of MCU circuit, constitute transmission, MCU circuit and the human-machine operation key face circuit mutual conduction of signal.This circuit is specially adapted to adopt fast saturated mutual inductor that power supply is provided, hollow mutual inductor provides the extremely above intelligent plastic housing isolating switch of two utmost points or two of the dual mutual inductor of collection, the user can be by the setting parameter of key mode, and can realize showing the size of current every phase current and the operation conditions of isolating switch.And the circuit design of low-power consumption, reasonably acquisition channel design and very strong anti-electromagnetic compatibility characteristic, realized selectivity, quick-action, reliability and the security of isolating switch, circuit is simple, highly versatile, advantage with low cost.
In the utility model embodiment, described power-switching circuit is DC-DC 5V (VDD) circuit, DC-DC-5V (VEE) circuit and DC-DC 3.3V (VCC) circuit, and described control operation circuit comprises parameter tuning circuit, display circuit.The MCU circuit also is connected with the required peripheral circuit of MCU, the output port of described power circuit is connected with the input port of the required peripheral circuit of MCU, and the required peripheral circuit of MCU includes reset circuit, external clock circuit, external crystal oscillation circuit, jtag interface, communication interface.
As shown in Figure 2, at each fast saturated transformer induced ac current signal that goes out main circuit power in extremely of intelligent plastic housing isolating switch, after constituting rectification circuit and filter capacitor C9-C13, diode D1-D8 becomes DC current, for follow-up power circuit use.As shown in Figure 3, power circuit comprises DC chopped-wave mu balanced circuit, DC-DC 5V (VDD) circuit, DC-DC-5V (VEE) circuit and DC-DC 3.3V (VCC) circuit.Direct current signal after the rectification suppresses diode D9 through transient voltage, and transient voltage suppresses diode can effectively suppress Conduction Interference in circuit, improve anti-electromagnetic compatibility characteristic.Resistance R 29-R32, capacitor C 14, metal-oxide-semiconductor Q1 (IRF540N) and IC5 (HT7050) integrated circuit constitute the DC chopped-wave mu balanced circuit, make supply voltage be controlled at 18V, offer trip circuit, DC-DC 5V (VDD) circuit, DC-DC-5V (VEE) circuit, the use of DC-DC 3.3V (VCC) circuit.Storage capacitor C15 threads off moment at magnetic flow convertor, and threading off to magnetic flow convertor by discharge provides energy compensating, and magnetic flow convertor is threaded off more reliably.D10 is the protection diode; diode D13, D15A, D15B constitute a power supply automatic selector switch; diode D15A, D15B are oppositely by selecting primary power power supply, diode D15A, the work of D15B conducting accessory power supply when primary power cuts out when primary power and accessory power supply are powered simultaneously.Filter capacitor C16-C19 and IC6 (LM1117) integrated circuit produces the power supply of a direct current 5V (VDD), filter capacitor C18-C21 and IC7 (SP6661) integrated circuit produces the power supply of a direct current-5V (VEE), offers IC1, IC2 (LM2902) and IC3, IC4 (MC74HC4053) integrated circuit and uses.Filter capacitor C22-C24 and IC8 (LM1117) integrated circuit produces the power supply of a direct current 3.3V (VCC), offers the follow-up required external circuit of MCU circuit, MCU, the use of human-machine operation key face circuit.Referring to Fig. 5, divider resistance R33, R34, anti-interference capacitor C25, metal-oxide-semiconductor Q2 (STD35NF06L), sustained diode 11 and junction block J6 constitute trip circuit, and wherein magnetic flow convertor is connected on the J6 junction block.Anti-interference capacitor C25, the immunity to interference ability of raising controller circuitry.
As shown in Figure 4, induce the ac voltage signal of main circuit power at each hollow mutual inductor in extremely of intelligent plastic housing isolating switch, be connected to four identical amplifying circuits of formation in IC1 (LM2902) integrated circuit via resistance R 1-R8, correspondence, wherein R9-R12 and IC3, IC4 (MC74HC4053) integrated circuit constitute a large and small acquisition channel selection circuit.Controller can be selected the reasonable acquisition channel that gets automatically according to the size of primary current, has improved the precision of sampled data.Resistance R 13-R20 and capacitor C 1-C8, C33-C36 correspondence are connected to and constitute four identical low-pass filter circuits in IC2 (LM2902) integrated circuit, and resistance R 21-R28 constitutes sampled voltage and promotes circuit, to satisfy the treatable signal of MCU.Signal after the processing and amplifying is connected on the corresponding port of MCU circuit (Fig. 7) 12BITS ADC.Acquisition channel adopts the low-pass filter circuit of 1KHZ, can truly reflect the situation of first-harmonic to 20 subharmonic like this.
As shown in Figure 6, human-machine operation key face circuit comprises parameter tuning circuit, display circuit, and correspondence is connected on the port of MCU circuit.Pull-up resistor R45-R48 and button K1-K4 constitute the parameter tuning circuit, the user can by button quickly and easily operative intelligence mould the shell short-circuiting device; Current-limiting resistance R37-R44 is connected last by IC1O (UL2003) pipe formation display circuit with U1 charactron, D1-D19 light-emitting diodes by bus.This display circuit can make software control convenient.
As shown in Figure 7, MCU selects the MSP430F147 of the 16BITS reduced instruction set (RISC) of low-power consumption for use, the ADC that it has 12BITS adopts the autoscan mode to finish conversion, once can finish the data-switching of whole passages, realize the high-precision cycle sampling that waits, can make isolating switch accurately also respond fault rapidly.As shown in Figure 8, the required external circuit of MCU comprises reset circuit, external clock circuit, jtag interface, communication interface, external crystal oscillation circuit, and correspondence is connected on the port of MCU circuit.Capacitor C 28-C31 constitutes the MCU power filtering capacitor, can improve the immunity to interference ability effectively; R35 constitutes the outer meeting resistance of MCU internal clocking, adopts the outer meeting resistance of MCU internal clocking can make clock more accurate, thereby has improved the protection precision of isolating switch; The J8 junction block constitutes a communication interface, like this can be by be connected the easy realization communication of energy with the external communication module; The J7 junction block constitutes modification and the upgrading that a jtag interface is convenient to program; Resistance R 36, capacitor C 32 and IC11 (LP3470) integrated circuit constitute the required reset circuit of MCU, and capacitor C 26, C27 and OSC1 constitute an external crystal oscillation circuit.Because adopt the doubleclocking system, use outer clock circuit as major clock at ordinary times, the internal digital clock starts work immediately automatically in case system breaks down, thereby has ensured the normal operation of total system, has improved the reliability of isolating switch work greatly.
Claims (5)
1. the circuit of an intelligent plastic housing breaker controller, include current rectifying and wave filtering circuit, power circuit, trip circuit, single chip circuit, Acquisition Circuit and control operation circuit, it is characterized in that: also include auxiliary power circuit, described power circuit includes DC chopped-wave mu balanced circuit and power-switching circuit, single chip circuit is MCU circuit and the required external circuit of MCU, the control operation circuit is a human-machine operation key face circuit, described Acquisition Circuit is by four integrated amplifiers, channel selection circuit and low-pass filter circuit constitute, described current rectifying and wave filtering circuit and auxiliary power circuit are connected with the input port of power circuit respectively, the output port of power circuit respectively with Acquisition Circuit, single chip circuit, the input port of trip circuit and control operation circuit connects, the output port of described Acquisition Circuit is connected with the input port of MCU circuit, constitute transmission, MCU circuit and the human-machine operation key face circuit mutual conduction of signal.
2. the circuit of intelligent plastic housing breaker controller according to claim 1, it is characterized in that: described power-switching circuit is DC-DC 5V circuit, DC-DC-5V circuit and DC-DC 3.3V circuit, described human-machine operation key face circuit comprises parameter tuning circuit, display circuit, described MCU circuit also is connected with the required external circuit of MCU, the output port of described power circuit is connected with the input port of the required external circuit of MCU, and the required external circuit of MCU includes reset circuit, external clock circuit, external crystal oscillation circuit, jtag interface, communication interface.
3. the circuit of intelligent plastic housing breaker controller according to claim 1, it is characterized in that: described current rectifying and wave filtering circuit includes rectification circuit and filtering circuit, wherein diode D1-D8 constitutes rectification circuit, filter capacitor C9-C13 constitutes filtering circuit, the tip node of diode D1-D8 and filter capacitor C9-C12 is connected with junction block, other end contact is connected with power circuit, and ac current signal is become direct current signal through diode D1-D8 and filter capacitor C9-C13.
4. the circuit of intelligent plastic housing breaker controller according to claim 1 and 2; it is characterized in that: the DC chopped-wave mu balanced circuit in the described power circuit is by resistance R 29-R32; capacitor C 14; metal-oxide-semiconductor Q1 and IC5 integrated circuit constitute; and control supply voltage; offer trip circuit; DC-DC 5V circuit; the DC-DC-5V circuit; DC-DC 3.3V circuit uses; capacitor C 15 is a storage capacitor; D10 is the protection diode; diode D13; D15A; D15B constitutes a power supply automatic selector switch; diode D15A when primary power and accessory power supply are powered simultaneously; D15B is oppositely by selecting the primary power power supply; diode D15A when primary power cuts out; the work of D15B conducting accessory power supply; filter capacitor C16-C19 and IC6 integrated circuit produce the power supply of a direct current 5V; filter capacitor C18-C21 and IC7 integrated circuit produce the power supply of a direct current-5V; offer IC1; IC2 and IC3; the IC4 integrated circuit uses; filter capacitor C22-C24 and IC8 integrated circuit produce the power supply of a direct current 3.3V, offer follow-up single chip circuit and control operation circuit.
5. the circuit of intelligent plastic housing breaker controller according to claim 1, it is characterized in that: described trip circuit includes divider resistance R33, R34, anti-interference capacitor C25, metal-oxide-semiconductor Q2, sustained diode 11 and junction block J6, wherein magnetic flow convertor is connected on the J6 junction block, described Acquisition Circuit is through R1-R8, correspondence is connected to four identical amplifying circuits in the IC1 integrated circuit formation, wherein R9-R12 and IC3, the IC4 integrated circuit constitutes one greatly, little acquisition channel is selected circuit, resistance R 13-R20 and capacitor C 1-C8, the C33-C36 correspondence is connected to and constitutes four identical low-pass filter circuits in the IC2 integrated circuit, resistance R 21-R28 constitutes sampled voltage and promotes circuit, to satisfy the treatable signal of MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201897682U CN201514560U (en) | 2009-07-24 | 2009-07-24 | Circuit of intelligent plastic case relay controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201897682U CN201514560U (en) | 2009-07-24 | 2009-07-24 | Circuit of intelligent plastic case relay controller |
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| CN201514560U true CN201514560U (en) | 2010-06-23 |
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| CN2009201897682U Expired - Lifetime CN201514560U (en) | 2009-07-24 | 2009-07-24 | Circuit of intelligent plastic case relay controller |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170105A (en) * | 2011-05-03 | 2011-08-31 | 厦门士林电机有限公司 | Ground fault protection type electronic tripper tripping device |
| CN102903582A (en) * | 2012-08-21 | 2013-01-30 | 江苏云意电气股份有限公司 | Controller device of intelligent residual current circuit breaker |
| CN103576582A (en) * | 2012-07-24 | 2014-02-12 | 江苏创能电器有限公司 | Intelligent molded case controller |
| CN103746632A (en) * | 2014-01-24 | 2014-04-23 | 中山市明阳电器有限公司 | Low-voltage motor control system |
| CN106959639A (en) * | 2017-04-10 | 2017-07-18 | 北京德威特继保自动化科技股份有限公司 | Low-voltage intelligent is switched and its board processing method, storage medium and processor |
| CN106971922A (en) * | 2017-04-24 | 2017-07-21 | 浙江大学 | Inexpensive low standby power loss takes control breaker control system and control method |
| CN114138168A (en) * | 2021-11-19 | 2022-03-04 | 联创汽车电子有限公司 | Storage battery voltage sampling circuit |
-
2009
- 2009-07-24 CN CN2009201897682U patent/CN201514560U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102170105A (en) * | 2011-05-03 | 2011-08-31 | 厦门士林电机有限公司 | Ground fault protection type electronic tripper tripping device |
| CN103576582A (en) * | 2012-07-24 | 2014-02-12 | 江苏创能电器有限公司 | Intelligent molded case controller |
| CN103576582B (en) * | 2012-07-24 | 2016-09-21 | 江苏创能电器有限公司 | A kind of intelligent plastic housing controller |
| CN102903582A (en) * | 2012-08-21 | 2013-01-30 | 江苏云意电气股份有限公司 | Controller device of intelligent residual current circuit breaker |
| CN103746632A (en) * | 2014-01-24 | 2014-04-23 | 中山市明阳电器有限公司 | Low-voltage motor control system |
| CN103746632B (en) * | 2014-01-24 | 2016-02-24 | 中山市明阳电器有限公司 | A kind of low-voltage motor control system |
| CN106959639A (en) * | 2017-04-10 | 2017-07-18 | 北京德威特继保自动化科技股份有限公司 | Low-voltage intelligent is switched and its board processing method, storage medium and processor |
| CN106971922A (en) * | 2017-04-24 | 2017-07-21 | 浙江大学 | Inexpensive low standby power loss takes control breaker control system and control method |
| CN114138168A (en) * | 2021-11-19 | 2022-03-04 | 联创汽车电子有限公司 | Storage battery voltage sampling circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20100623 |