CN106410949A - Intelligent dual-power supply conversion device - Google Patents
Intelligent dual-power supply conversion device Download PDFInfo
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- CN106410949A CN106410949A CN201510436447.8A CN201510436447A CN106410949A CN 106410949 A CN106410949 A CN 106410949A CN 201510436447 A CN201510436447 A CN 201510436447A CN 106410949 A CN106410949 A CN 106410949A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
An intelligent dual-power supply conversion device disclosed by the present invention comprises a dual-in and single-out flyback switching power supply, an intelligent control unit, a voltage sampling unit and a motor driving unit. The intelligent control unit is connected with the dual-in and single-out flyback switching power supply, the voltage sampling unit and the motor driving unit separately, and comprises an internal power supply selection module, a controller module, a switching state acquisition module, a fire-fighting dual-division signal processing module, an interface and an indication module. The intelligent dual-power supply conversion device of the present invention supplies power to the controller by the dual-in and single-out flyback switching power supply, and detects the operation states of the frequently used and standby power supplies real-timely via an intelligent control system, controls an AC motor to switch the power supplies intelligently, and is sensitive, accurate and stable.
Description
Technical field
The present invention relates to electrical equipment technical field, particularly to double-power supply switching device, it is generally used for the important events such as hospital, fire-fighting, airport.
Background technology
In order to proof load power uninterrupted, the power supply of load is generally divided into conventional power supply and stand-by power supply, will ensure that conventional conversion time between power supply and stand-by power supply is short simultaneously.Intelligent double-power supply switching device must be able to accurately and rapidly detect power-down conditions and send changeover control signal, intelligently changed and stand-by power supply between conventional by AC induction motor, it is to avoid due to erroneous judgement or the detection time situation causing load supplying to interrupt such as long.
Chinese invention patent 201110419179.0 discloses a kind of intelligent electronic device double-power supply switching device, this invention is realized exchanging input by two-way, obtain DC source via two independent seamless rectification modules, two-way DC source is connected in parallel and inputs a DC/DC converter module, to obtain required DC voltage.Chinese utility model patent 201320347920.1 discloses a kind of double-power supply switching device based on IGBT, and this device detects the power supply of input side by voltage transformer, by the break-make of Single-chip Controlling IGBT come Switching power.
There are following 2 points of deficiencies in above patent, first, power supply unit is unreliable, when DC/DC module failure it is impossible to export DC voltage, equipment quits work；Second, the conventional sampling unit with stand-by power supply is all using voltage transformer, device volume is larger, relatively costly.
Content of the invention
Present invention aim at providing a kind of intelligent double-power supply switching device for the deficiency of background technology presence, this device adopts intelligence control system real-time detection to commonly use the state of power supply and stand-by power supply, by alternating current generator intelligent conversion power supply, intelligent conversion between achievable two-way input power, any one road input power does not all affect on follow-up load after breaking down, and this intelligent double-power supply switching device can bear larger input voltage range.
To achieve these goals, the invention provides a kind of intelligent double-power supply switching device, enter singly to go out inverse-excitation type switch power-supply, intelligent control unit, voltage sampling unit, electric-motor drive unit including double；Described intelligent control unit double enters singly to go out inverse-excitation type switch power-supply, described voltage sampling unit and described electric-motor drive unit and be connected with described respectively；Described double enter singly to go out inverse-excitation type switch power-supply be an inverse-excitation type switch power-supply mutually commonly using the two-way independence that power supply is constituted with a phase stand-by power supply, the DC output end of two-way inverse-excitation type switch power-supply is connected in parallel for in-line power.
Of the present invention double enter singly to go out inverse-excitation type switch power-supply and include：Two start surge protection modules（I）, two input rectifying modules（II）, two direct current handover modules（III）, two π type input filter modules（IV）, two anti exciting converter modules（V）, a π type output filter module（VI）；Described anti exciting converter module（V）Including：Conventional six Port Translation devices（T1）, standby six Port Translation devices（T2）, conventional RCD absorption module（V-1）, standby RCD absorption module（V-4）, conventional constant voltage conversion module（V-2）, standby constant voltage conversion module（V-5）, conventional output rectification module（V-3）, standby output rectification module（V-6）；Described pair enters singly to go out the topological structure of inverse-excitation type switch power-supply, including：Power supply is commonly used on one tunnel（A、N）With a road stand-by power supply（A_、N_）Respectively via switching surge protection module（I）, input rectifying module（II）, direct current handover module（III）, π type input filter module（IV）, anti exciting converter module（V）Obtain the DC output power of two-way independence afterwards, two-way out-put supply is coupled to π type output filter module（VI）, obtain system working power
.Voltage sampling unit of the present invention is used for line voltage and gathers，It is made up of conventional supply voltage sampling module and stand-by power supply sampling module，Described conventional supply voltage sampling module is made up of three sampling resistors and two discharge circuits，Described sampling resistor constitutes star-like connection，Described intelligent control unit is sampled to arbitrarily biphase sampling resistor voltage，Obtain the two-phase voltage value of conventional three-phase input power supply，Another phase voltage value is obtained based on electrical network three-phase voltage equilibrium principle，To reduce quantity and the device volume of voltage transformer，Described stand-by power supply sampling module is made up of with discharge circuit voltage transformer，Stand-by power supply produces primary current through resistance，Secondary induction identical electric current，Corresponding alternating voltage is produced on sampling resistor，Become low-voltage signal after processing through amplifier chip，Input controller ADC pin carries out AC sampling.
Conventional supply voltage sampling module of the present invention includes：Direct current biasing module, the first conventional sampling resistor, the second conventional sampling resistor, the 3rd conventional sampling resistor, conventional input resistance, conventional feedback resistance, the first conventional protection diode, the second conventional protection diode, conventional sampling amplifier chip, the first conventional sampling filter electric capacity, the second conventional sampling filter electric capacity.For the ease of the detection of controller, must be in amplifier input input direct-current bias voltage.Described direct current biasing module includes：Biasing current-limiting resistance, voltage stabilizing chip, the first bias bleeder resistance, the second bias bleeder resistance, wherein, described biasing current-limiting resistance respectively with power supply, voltage stabilizing chip be connected, the first bias bleeder resistance is connected with voltage stabilizing chip and the second bias bleeder resistance, and the second bias bleeder resistance other end is grounded, and the first bias bleeder resistance and the second bias bleeder ohmic connection points are as direct current biasing output signal V1_0.Described conventional supply voltage sampling module structure is identical, one mutually commonly uses power supply and the first conventional sampling resistor, second conventional sampling resistor, 3rd conventional sampling resistor series connection is connected to mains neutral point, second conventional sampling resistor and the 3rd conventional sampling resistor junction point connect conventional input resistance, conventional input resistance another termination conventional sampling amplifier chip, first conventional protection diode and the second conventional protection diode are connected anti-parallel between conventional sampling amplifier chip positive-negative input end, conventional sampling amplifier chip positive input meets DC bias signal V1_0, conventional sampling amplifier chip ground terminal ground connection, conventional sampling power supply termination power, one end ground connection after the first conventional sampling filter electric capacity is in parallel with the second conventional sampling filter electric capacity, another termination power, conventional feedback resistance one termination conventional sampling amplifier chip reverse input end, another termination commonly uses sampling amplifier chip outfan and controller.Described stand-by power supply sampling module includes：First standby sampling current-limiting resistance, the second standby sampling current-limiting resistance, voltage transformer, the first standby sampling resistor, the second standby sampling resistor, the first standby sampling protection diode, the second standby sampling protection diode, standby sampling amplifier chip, standby sampling feedback resistance.Wherein, described first standby sampling current-limiting resistance standby with second sample current-limiting resistance in parallel after respectively with stand-by power supply input, voltage transformer input side is connected, voltage transformer input side another termination stand-by power supply neutral point, first standby sampling resistor is parallel between voltage transformer outlet side, second standby sampling resistor respectively with the first standby sampling resistor, standby sampling amplifier chip amplifier chip reverse input end is connected, first standby sampling protection diode and the second standby sampling protection diode are connected anti-parallel between the standby sampling positive and negative input side of amplifier chip, the first standby sampling in standby sampling protection diode one end amplifier chip reverse input end, another termination standby sampling amplifier chip positive input is simultaneously connected with DC bias signal V1_0, standby sampling amplifier chip power supply termination power, standby sampling amplifier chip lower margin ground connection, standby sampling feedback resistance one terminates standby sampling amplifier chip reverse input end, another termination standby sampling amplifier chip outfan and controller.
For the power supply reliability of Guarantee control system, its power supply enters singly to go out inverse-excitation type switch power-supply using double.Described double enter singly to go out inverse-excitation type switch power-supply and include：Two start surge protection modules, two input rectifying modules, two direct current handover modules, two π type input filter modules, two anti exciting converter modules, π type output filter modules.Described start surge protection module includes：Conventional power supply critesistor, stand-by power supply critesistor, conventional power supply varistor, stand-by power supply varistor.Described conventional power supply critesistor one termination commonly uses power input, and another termination commonly uses power supply varistor, and conventional power supply varistor is another to terminate conventional mains neutral point.Described stand-by power supply critesistor one terminates stand-by power supply input, another termination stand-by power supply varistor, stand-by power supply varistor another termination stand-by power supply neutral point.Described conventional input rectifying module is identical with stand-by power supply rectifier bridge module structure, and commutation diode all builds rectifier bridge by biphase rectification circuit form.Described direct current handover module, during for input power dead electricity, the commutation output signal of other side can be connected with fault side commutation output signal so that this side can normally export DC voltage.Described direct current handover module includes：Bleeder circuit, low-pass filter circuit, DC relay.Described bleeder circuit realizes voltage divide function by two resistance, is connected in parallel on the outfan two ends of input rectifying unit.Described low-pass filter circuit realizes High frequency filter, avoid alternating current power supply amplitude to fall near under-voltage value and lead to relay frequent movement, impact relay life, passive low-pass filter circuit can be built by RC device, described low-pass filter circuit input terminates described bleeder circuit outfan, and described low-pass filter circuit outfan is powered for relay coil.The switching between main power supply module realized by described DC relay, and two-way normally-closed contact one end connects the outfan of this side input rectifying module respectively, and the two-way normally-closed contact other end connects the outfan of opposite side input rectifying module respectively.π type input filter module described in two-way, including：Conventional filter inductance, the first conventional filter capacitor, the second conventional filter capacitor, standby filter inductance, the first standby filter capacitor, the second standby filter capacitor.Described π type input filter module is identical with structure in stand-by power supply in conventional power supply, and filter inductance one end connects the first filter capacitor and rectifier bridge, another termination second filter capacitor and anti exciting converter module respectively.Described anti exciting converter module, including：Conventional RCD absorption module, conventional constant voltage conversion module, conventional six Port Translation devices, conventional changer filter capacitor, conventional output rectification module, standby RCD absorption module, standby constant voltage conversion module, standby six Port Translation devices, standby converter filter capacitor, standby output rectification module.Described conventional changer filter capacitor is connected to conventional six Port Translation devices.Described standby converter filter capacitor is connected to standby six Port Translation devices.Described inverse-excitation type switch power-supply, in described constant voltage conversion module shutdown moment, because leakage inductance can produce drain electrode peak voltage, for protection device, needs to carry out absorption process to this portion of energy.Described conventional RCD absorption module, including：First conventional absorption resistance, the second conventional absorption resistance, conventional Absorption Capacitance, conventional absorption diode.Described first conventional absorption resistance is in parallel with conventional Absorption Capacitance, the conventional six Port Translation devices of one termination, the conventional absorption resistance of another termination second, the conventional absorption diode of another termination of the second conventional absorption resistance, the conventional six Port Translation devices of another termination of conventional absorption diode.Described standby RCD absorption module, including：First standby absorption resistance, the second standby absorption resistance, standby Absorption Capacitance, standby absorption diode.Described first standby absorption resistance is in parallel with standby Absorption Capacitance, the one standby six Port Translation devices of termination, another termination the second standby absorption resistance, the second standby absorption resistance is another to terminate standby absorption diode, and standby absorption diode is another to terminate standby six Port Translation devices.Described conventional constant voltage conversion module, including：Conventional control chip, conventional adjust electric capacity, first conventional adjust resistance, second conventional adjust resistance.Described conventional control chip respectively with filter capacitor, conventional six Port Translation devices, conventional adjust capacitance connection, first conventional adjust resistance and the second conventional regulation resistant series, and be connected with conventional control chip with conventional six Port Translation devices.Described standby constant voltage conversion module, including：Standby control chip, standby regulation electric capacity, the first standby regulation resistance, the second standby regulation resistance.Described standby control chip respectively with filter capacitor, standby six Port Translation devices, standby regulation capacitance connection, first standby adjust resistance and the second standby regulation resistant series, and be connected with standby control chip with standby six Port Translation devices.In order to reduce the radiation EMI of the higher-order of oscillation and correlation, commutation diode needs add RC buffer circuit.Described conventional output rectification module, including：Conventional output dead resistance, conventional output commutation capacitor, conventional output commutation diode.The described conventional dead resistance that exports is connected with conventional output commutation capacitor, conventional six Port Translation devices respectively, commonly uses the output commutation capacitor other end and is grounded, commonly use output commutation diode one end ground connection, another termination commonly uses six Port Translation devices.Described standby output rectification module, including：Standby output dead resistance, standby output commutation capacitor, standby output commutation diode.Described standby output dead resistance is connected with standby output commutation capacitor, standby six Port Translation devices respectively, standby output commutation capacitor other end ground connection, standby output commutation diode one end ground connection, the standby six Port Translation devices of another termination.Described π type output filter module, including：Output inductor, the first output filter capacitor, the second output filter capacitor.Described first output filter capacitor one terminates the second output filter capacitor and ground, and the other end is connected with conventional six Port Translation devices, output inductor respectively, and the output inductor other end is connected with the second output filter capacitor, and as DC source output.
Described pair enters singly to go out inverse-excitation type switch power-supply, and it possesses 6 kinds of mode of operations so as to have fault self-recovery function.Described 6 kinds of mode of operations are as follows：
Pattern 1：Conventional power loss, conventional side direct current switches the actuating of relay, and prepped side rectification output is connected to conventional side π type input filter module, and the output voltage of conventional side is normal, and equipment can normally run.
Pattern 2：Stand-by power supply dead electricity, prepped side direct current switches the actuating of relay, and rectification output in conventional side is connected to prepped side π type input filter module, and the output voltage of prepped side is normal, and equipment can normally run.
Pattern 3：Conventional power loss, and conventional anti exciting converter module failure, conventional side direct current switches the actuating of relay, prepped side rectification output is connected to conventional side π type input filter module, conventional side does not export, prepped side output voltage is normal, and equipment can normally run.
Pattern 4：Stand-by power supply dead electricity, and standby anti exciting converter module failure, prepped side direct current switches the actuating of relay, rectification output in conventional side is connected to prepped side π type input filter module, prepped side does not export, conventional side output voltage is normal, and equipment can normally run.
Pattern 5：Conventional power loss, and standby anti exciting converter module failure, conventional side direct current switches the actuating of relay, prepped side rectification output is connected to conventional side π type input filter module, conventional side output voltage is normal, and prepped side does not export, and equipment can normally run.
Pattern 6：Stand-by power supply dead electricity, and conventional anti exciting converter module failure, prepped side direct current switches the actuating of relay, rectification output in conventional side is connected to prepped side π type input filter module, prepped side output voltage is normal, and conventional side does not export, and equipment can normally run.
The present invention compared with prior art, its remarkable advantage：First, for the power supply of control system, enter singly to go out inverse-excitation type switch power-supply and be powered using double, as long as a wherein one road input power and road anti exciting converter module is normal it is possible to normally output DC voltage is hence it is evident that improve the reliability of equipment；It two, sampling resistor constitutes star-like connection, and described intelligent control unit is sampled to arbitrarily biphase sampling resistor voltage, obtains the two-phase voltage value of conventional three-phase input power supply, another phase voltage value is obtained based on electrical network three-phase voltage equilibrium principle, to reduce quantity and the device volume of voltage transformer.
The invention will be further described below in conjunction with the accompanying drawings.
Brief description：
Fig. 1 is intelligent double-power supply switching device of the present invention structured flowchart in one embodiment.
Fig. 2 is that intelligent double-power supply switching device of the present invention is double in one embodiment to be entered singly to go out the systematic schematic diagram of inverse-excitation type switch power-supply module.
Fig. 3 is that intelligent double-power supply switching device of the present invention is double in one embodiment to be entered singly to go out the system block diagram of inverse-excitation type switch power-supply module.
Fig. 4 is intelligent double-power supply switching device of the present invention bias DC voltage source schematic diagram in one embodiment.
Fig. 5 is that intelligent double-power supply switching device of the present invention commonly uses a cross streams voltage sample schematic diagram in one embodiment.
Fig. 6 is an intelligent double-power supply switching device of the present invention standby phase voltage sampling principle figure in one embodiment.
Fig. 7 is intelligent double-power supply switching device of the present invention motor control schematic diagram in one embodiment.
Specific embodiment：
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention not limited to this.
Refering to Fig. 1, the groundwork process of the intelligent double-power supply switching device of the present invention is as follows：Internal system controls power supply to take conventional A phase and the input of standby A_ phase two-way to respectively constitute independent inverse-excitation type switch power-supply, then by the DC parallel of output it is ensured that the reliability of DC source and reliability；Voltage sample mode takes conventional three-phase directly to sample, standby one samples through voltage transformer；The double-power supply switching device of the present invention switches out-put supply by AC induction motor, rotates via intelligence control system controlled motor；It is to provide reliable and stable working power to motor, motor power supply passes through internal electric source selecting module, the road automatically selecting optimum powers to motor；Debugging for the ease of equipment and intellectuality, also design are furnished with off state acquisition module, the double sub-signal processing module of fire-fighting.
The invention provides a kind of intelligent double-power supply switching device, enter singly to go out inverse-excitation type switch power-supply, intelligent control unit, voltage sampling unit, electric-motor drive unit including double；Described intelligent control unit double enters singly to go out inverse-excitation type switch power-supply, described voltage sampling unit and described electric-motor drive unit and be connected with described respectively；Described intelligent control unit includes：Internal electric source selecting module, controller module, on off state acquisition module, the double sub-signal processing module of fire-fighting, interface and indicating module, described internal electric source selecting module includes audion drive module and relay modular converter, Power convert is selected by relay, and external power supply is automatically selected by internal auxiliary switch；Described controller module includes a processor of single chip computer and its peripheral circuit, and described controller module adopts STM8S105S single-chip microcomputer；Described on off state acquisition module adopts resistance current limliting and light-coupled isolation；Double points of processing modules of described fire-fighting are using exchange optocoupler method collection；Described interface and indicating module include：Communication module, indicator board port module, LED display module, switching mode and fault time delay module, checking mode module.
The STM8S105S based on ST company for the intelligent control unit of the system designs, and this single-chip microcomputer has 3 grades of Harvard pipeline organizations, and supports expansion instruction set.2.95-5.5V running voltage, 4 master clock sources；1 16 senior control timer, 2 16 general purpose timers and 18 basic intervalometers, built-in independent house dog and window house dog；The Flash program memorizer of 16KB, the EEPROM of 1KB and 10 ADC of 9 passages（Support scan pattern and simulation watchdog function）.
Refering to shown in Fig. 2, conventional A phase respectively constitutes independent two-way inverse-excitation type switch power-supply with standby A_ phase, then by the DC parallel of output.Double enter singly to go out inverse-excitation type switch power-supply and include：Start surge protection module（Ⅰ）, input rectifying module（Ⅱ）, direct current handover module（III）, π type input filter module（IV）, anti exciting converter module（V）With π type output filter module（VI）.Described anti exciting converter module（V）Including：Conventional six Port Translation devices（T1）, standby six Port Translation devices（T2）, conventional RCD absorption module（V_1）, standby RCD absorption module（V-4）, conventional constant voltage conversion module（V-2）, standby constant voltage conversion module（V-5）, conventional output rectification module（V-3）, standby output rectification module（V-6）.Input power is via inputting biphase rectifier bridge after electric fuse, critesistor, varistor, and in one direct current handover module of the output two ends of rectifier bridge parallel connection, the output voltage of rectifier bridge passes throughType LC filter circuit, out-put supply enters singly to go out the DC source that inverse-excitation type switch power-supply obtains two-way independence again via single phase rectifier circuit through double, finally will after the parallel connection of two-way DC source throughType LC exports rectification module to system power supply, wherein double enter singly to go out in inverse-excitation type switch power-supply module constant voltage conversion module and select LNK623 chip, the double of this system enter singly to go out inverse-excitation type switch power-supply input voltage range [85,265] VAC, output 5V/500mA, output voltage tolerance is less than 5%, as long as wherein one tunnel inputs in input range it is possible to normally export DC voltage.Conventional power supply critesistor（RT1）The conventional power input of one termination, another termination commonly uses power supply varistor（RV1）, conventional power supply varistor（RV1）Another termination commonly uses mains neutral point N；Stand-by power supply critesistor（RT2）One termination stand-by power supply input, another termination stand-by power supply varistor（RV2）, stand-by power supply varistor（RV2）Another termination stand-by power supply neutral point N_.Conventional input rectifying module is identical with stand-by power supply rectifier bridge module structure, all constitutes rectifier bridge by biphase rectification circuit form.Conventional direct current handover module is identical with standby direct current handover module structure, resistance（R32）With resistance（R33）Bleeder circuit in series, is parallel to input rectifying module outfan, voltage division signal is via resistance（R34）With electric capacity（C15）The low-pass filter circuit constituting, the output termination conventional direct current switching relay of low-pass filter circuit（U14）Coil, relay two-way normally-closed contact one terminate this side input rectifying module outfan, two contacts another termination other side input filter module two ends.Type input filter module（IV）Identical with structure in stand-by power supply in conventional power supply, filter inductance one terminates the first filter capacitor and rectifier bridge, another termination second filter capacitor, and the first filter capacitor is connected with the second filter capacitor and rectifier bridge；Conventional changer filter capacitor（C6）With conventional six Port Translation devices（T1）It is connected；Standby converter filter capacitor（C10）With standby six Port Translation devices（T2）It is connected；First conventional absorption resistance（R1）With conventional Absorption Capacitance（C5）Parallel connection, the conventional six Port Translation devices of a termination（T1）, the conventional absorption resistance of another termination second（R2）, the second conventional absorption resistance（R2）Another termination commonly uses absorption diode（D9）, conventional absorption diode（D9）The other end and conventional six Port Translation devices（T1）It is connected；First standby absorption resistance（R6）With standby Absorption Capacitance（C9）Parallel connection, the standby six Port Translation devices of termination（T2）, another termination the second standby absorption resistance（R7）, the second standby absorption resistance（R7）The standby absorption diode of another termination（D10）, standby absorption diode（D10）Another termination is for six Port Translation devices（T2）；Conventional control chip（U1）With the second conventional filter capacitor（C2）, conventional six Port Translation devices（T1）, conventional adjust electric capacity（C8）It is connected, the first conventional regulation resistance（R4）With the second conventional regulation resistance（R5）Series connection, and with conventional six Port Translation devices（T1）, conventional control chip（U1）It is connected；Standby control chip（U2）With the second standby filter capacitor（C4）, standby six Port Translation devices（T2）, standby regulation electric capacity（C12）Connect, the first standby regulation resistance（R9）With the second standby regulation resistance（R10）Series connection, and with standby six Port Translation devices（T2）With standby control chip（U2）It is connected；Conventional output dead resistance（R3）One end and conventional output commutation capacitor（C7）Connect, another termination commonly uses six Port Translation devices（T1）, commonly use output commutation capacitor（C7）The other end is grounded, and commonly uses output commutation diode（D11）One end is grounded, and another termination commonly uses six Port Translation devices（T1）；Standby output dead resistance（R8）One end and standby output commutation capacitor（C11）Connect, the standby six Port Translation devices of another termination（T2）, standby output commutation capacitor（C11）The other end is grounded, standby output commutation diode（D12）One end is grounded, the standby six Port Translation devices of another termination（T2）；First output filter capacitor（C13）With the second output filter capacitor（C14）, conventional six Port Translation devices（T1）, standby six Port Translation devices（T2）And output inductor（L3）Connect, output inductor（L3）The other end and the second output filter capacitor（C14）The other end is connected, as power output.
Enter singly to go out the system block diagram of inverse-excitation type switch power-supply module refering to, shown in Fig. 3, Fig. 3 is that intelligent double-power supply switching device of the present invention is double in one embodiment.This pair enters and singly goes out inverse-excitation type switch power-supply, possesses 6 kinds of mode of operations so as to have fault self-recovery function.Described 6 kinds of mode of operations are as follows：
Pattern 1：Conventional power loss, conventional side direct current switches the actuating of relay, and prepped side rectification output is connected to conventional side π type input filter module, and the output voltage of conventional side is normal, and equipment can normally run.
Pattern 2：Stand-by power supply dead electricity, prepped side direct current switches the actuating of relay, and rectification output in conventional side is connected to prepped side π type input filter module, and the output voltage of prepped side is normal, and equipment can normally run.
Pattern 3：Conventional power loss, and conventional anti exciting converter module failure, conventional side direct current switches the actuating of relay, prepped side rectification output is connected to conventional side π type input filter module, conventional side does not export, prepped side output voltage is normal, and equipment can normally run.
Pattern 4：Stand-by power supply dead electricity, and standby anti exciting converter module failure, prepped side direct current switches the actuating of relay, rectification output in conventional side is connected to prepped side π type input filter module, prepped side does not export, conventional side output voltage is normal, and equipment can normally run.
Pattern 5：Conventional power loss, and standby anti exciting converter module failure, conventional side direct current switches the actuating of relay, prepped side rectification output is connected to conventional side π type input filter module, conventional side output voltage is normal, and prepped side does not export, and equipment can normally run.
Pattern 6：Stand-by power supply dead electricity, and conventional anti exciting converter module failure, prepped side direct current switches the actuating of relay, rectification output in conventional side is connected to prepped side π type input filter module, prepped side output voltage is normal, and conventional side does not export, and equipment can normally run.
Refering to shown in Fig. 4, Fig. 4 is intelligent double-power supply switching device of the present invention bias DC voltage source schematic diagram in one embodiment.Because the low pressure track to track that the amplifier chip in the system voltage sample adopts TI company exports amplifier chip LMV324.Output voltage swing [0.18, VCC-0.4] V in view of LMV324, we select supply voltage 5V, tolerance 5%, so for 4.85V it is considered to 0.05V allowance when voltage is relatively low, taking 4.8V.Amplifier chip output voltage swing [0.18,4.4V] in the worst case.Because amplifier chip single supply is powered herein, the ADC1 sampling power supply of controller is also powered with single supply, so needing for the alternating voltage of sampling to carry out direct current biasing, bias voltage is set to 2V, then V1_0 elects 1V as, is obtained by reference voltage chip TL431.Biasing current-limiting resistance（R16）One termination power output, another termination voltage stabilizing chip（U4）, voltage stabilizing chip（U4）Input pin and output pin short circuit, lower margin is grounded, bias bleeder resistance（R17）One termination voltage stabilizing chip（U4）, another termination bias bleeder resistance（R18）, bias bleeder resistance（R18）The other end is grounded, bias bleeder resistance（R17）With bias bleeder resistance（R18）Junction point is as direct current biasing output signal V1_0.
Refering to shown in Fig. 5, described voltage sampling unit is used for line voltage and gathers, and is made up of conventional supply voltage sampling module and stand-by power supply sampling module.Described conventional supply voltage sampling module is made up of three sampling resistors and two discharge circuits.Described sampling resistor constitutes star-like connection, intelligent control unit is sampled to arbitrarily biphase sampling resistor voltage, obtain the two-phase voltage value of conventional three-phase input power supply, another phase voltage value is obtained based on electrical network three-phase voltage equilibrium principle, to reduce quantity and the device volume of voltage transformer.Conventional supply voltage sampling module structure is identical, and one mutually commonly uses power supply and the first conventional sampling resistor（R11）, the second conventional sampling resistor（R12）, the 3rd conventional sampling resistor（R13）Series connection, the 3rd conventional sampling resistor（R13）Other end connects input power neutral point N, the second conventional sampling resistor（R12）With the 3rd conventional sampling resistor（R13）Junction point connects conventional input resistance（R14）, conventional input resistance（R14）Another termination amplifier chip（U3A）Reverse input end, the first conventional protection diode（D13）With the second conventional protection diode（D14）It is connected anti-parallel to amplifier chip（U3A）Between positive-negative input end, amplifier chip（U3A）Positive input connects DC bias signal V1_0, amplifier chip（U3A）Lower margin is grounded, and power pin connects, the first conventional sampling filter electric capacity（C15）With the second conventional sampling filter electric capacity（C16）One end ground connection, another termination after parallel connection, conventional feedback resistance（R15）One termination amplifier chip（U3A）Reverse input end, another termination amplifier chip（U3A）Output pin input controller.
Refering to shown in Fig. 6, Fig. 6 is an intelligent double-power supply switching device of the present invention standby phase voltage sampling principle figure in one embodiment.Described stand-by power supply sampling module is made up of with discharge circuit voltage transformer.Voltage to be measured produces primary current, secondary induction identical electric current through resistance, produces corresponding alternating voltage on sampling resistor, becomes low-voltage signal, input controller ADC pin carries out AC sampling after processing through amplifier chip.Standby sampling current-limiting resistance（R19）With standby sampling current-limiting resistance（R20）Parallel connection after respectively with stand-by power supply A_, voltage transformer（CT）Former limit is connected, voltage transformer（CT）Another pin of former limit connects stand-by power supply neutral point N_, standby sampling resistor（R21）It is parallel to voltage transformer（CT）Between secondary, voltage transformer（CT）Secondary connects standby sampling resistor（R22）, standby sampling resistor（R22）The standby sampling amplifier chip of another termination（U5A）Reverse input end, voltage transformer（CT）The other end is grounded, standby sampling protection diode（D15）With standby sampling protection diode（D16）It is connected anti-parallel to standby sampling amplifier chip（U5A）Between positive-negative input end, standby sampling amplifier chip（U5A）Positive input is connected with DC bias signal V1_0, standby sampling amplifier chip（U5A）Power supply terminates, standby sampling amplifier chip（U5A）Lower margin is grounded, standby sampling feedback resistance（R23）The one standby sampling amplifier chip of termination（U5A）Reverse input end, the standby sampling amplifier chip of another termination（U5A）Output pin input controller.
Refering to shown in Fig. 7, motor control module is switched by motor range, optocoupler and relay form, and motor control logic part completes with motor range switch and optocoupler, and drive part is completed by relay, and motor control only has both direction：Main story and reversion, target location has three：Conventional position, spare bit and fire-fighting position, can not provide main story and reverse signal simultaneously in control, software and hardware all must have interlock logic.In electric-motor drive unit, motor reversal driver element is identical with motor forward drive cellular construction, inverts current-limiting resistance（R24）One termination controller, the other end is reversed to turn audion（Q1）, invert current-limiting resistance（R26）One termination controller, the other end is reversed to turn optocoupler（U7A）, invert pull-up resistor（R25）One termination, the other end is reversed to turn audion（Q1）, invert audion（Q1）Emitting stage is grounded, and inverts optocoupler（U6A）Input side is reversed to turn audion（Q1）, invert optocoupler（U6A）Another pin of input side and output pin connect controller, invert optocoupler（U7A）Input side negative electrode, outlet side colelctor electrode connect controller, invert optocoupler（U7A）Outlet side emitter stage connects rotating forward optocoupler（U8A）Outlet side colelctor electrode, rotates forward optocoupler（U8A）Outlet side emitter stage connects reverse drive current-limiting resistance（R30）, it is driven reverse current-limiting resistance（R30）The other end connects reverse drive audion（Q3）First pin, is driven reverse stabilivolt（D17）Second pin connects, it is driven reverse stabilivolt（D17）Anode connects reverse drive audion（Q3）Colelctor electrode, is driven reverse audion（Q3）Ground level, be driven reverse relay（U10）With, be driven reverse audion（Q3）Colelctor electrode, forward drive relay（U11）, motor be connected.
Generally speaking, the intelligent double-power supply switching device of the present invention adopts intelligence control system real-time detection to commonly use and stand-by power supply running status, and by alternating current generator intelligent switch power source, intelligence control system of the present invention is sensitiveer, accurate.
Above-described embodiment is the present invention preferably embodiment; but embodiments of the present invention are simultaneously not restricted to the described embodiments; other any spirit without departing from the present invention and the change made under principle, modification, replacement, combine, simplify; all should be equivalent substitute mode, be included within protection scope of the present invention.
Claims (6)
1. a kind of intelligent double-power supply switching device it is characterised in that：Enter singly to go out inverse-excitation type switch power-supply, intelligent control unit, voltage sampling unit, electric-motor drive unit including double；Described intelligent control unit double enters singly to go out inverse-excitation type switch power-supply, described voltage sampling unit and described electric-motor drive unit and be connected with described respectively；Described double enter singly to go out inverse-excitation type switch power-supply be an inverse-excitation type switch power-supply mutually commonly using the two-way independence that power supply is constituted with a phase stand-by power supply, the DC output end of two-way inverse-excitation type switch power-supply is connected in parallel for in-line power.
2. a kind of intelligent double-power supply switching device according to claim 1 it is characterised in that：Described double enter singly to go out inverse-excitation type switch power-supply and include：Two start surge protection modules（I）, two input rectifying modules（II）, two direct current handover modules（III）, two π type input filter modules（IV）, two anti exciting converter modules（V）, a π type output filter module（VI）；Described anti exciting converter module（V）Including：Conventional six Port Translation devices（T1）, standby six Port Translation devices（T2）, conventional RCD absorption module（V-1）, standby RCD absorption module（V-4）, conventional constant voltage conversion module（V-2）, standby constant voltage conversion module（V-5）, conventional output rectification module（V-3）, standby output rectification module（V-6）；Described pair enters singly to go out the topological structure of inverse-excitation type switch power-supply, including：Power supply is commonly used on one tunnel（A、N）With a road stand-by power supply（A_、N_）Respectively via switching surge protection module（I）, input rectifying module（II）, direct current handover module（III）, π type input filter module（IV）, anti exciting converter module（V）Obtain the DC output power of two-way independence afterwards, two-way out-put supply is coupled to π type output filter module（VI）, obtain system working power
.
3. a kind of intelligent double-power supply switching device according to claim 1 it is characterised in that：Described voltage sampling unit is used for line voltage and gathers, it is made up of conventional supply voltage sampling module and stand-by power supply sampling module, described conventional supply voltage sampling module is made up of three sampling resistors and two discharge circuits, described sampling resistor constitutes star-like connection, described intelligent control unit is sampled to arbitrarily biphase sampling resistor voltage, obtain the two-phase voltage value of conventional three-phase input power supply, another phase voltage value is obtained based on electrical network three-phase voltage equilibrium principle, described stand-by power supply sampling module is made up of with discharge circuit voltage transformer, stand-by power supply produces primary current through resistance, secondary induction identical electric current, corresponding alternating voltage is produced on sampling resistor, become low-voltage signal after processing through amplifier chip, input controller ADC pin carries out AC sampling.
4. a kind of intelligent double-power supply switching device according to claim 3 it is characterised in that：Described conventional supply voltage sampling module, one mutually commonly uses power supply and the first conventional sampling resistor（R11）, the second conventional sampling resistor（R12）, the 3rd conventional sampling resistor（R13）Series connection, the 3rd conventional sampling resistor（R13）Other end connects input power neutral point N, the second conventional sampling resistor（R12）With the 3rd conventional sampling resistor（R13）Junction point connects conventional input resistance（R14）, conventional input resistance（R14）Another termination amplifier chip（U3A）Reverse input end, the first conventional protection diode（D13）With the second conventional protection diode（D14）It is connected anti-parallel to amplifier chip（U3A）Between positive-negative input end, amplifier chip（U3A）Positive input connects DC bias signal V1_0, amplifier chip（U3A）Lower margin is grounded, and power pin connects power supply, the first conventional sampling filter electric capacity（C15）With the second conventional sampling filter electric capacity（C16）One end ground connection, another termination power after parallel connection, conventional feedback resistance（R15）One termination amplifier chip（U3A）Reverse input end, another termination amplifier chip（U3A）Output pin input controller.
5. a kind of intelligent double-power supply switching device according to claim 1 it is characterised in that：Described intelligent control unit includes：Internal electric source selecting module, controller module, on off state acquisition module, the double sub-signal processing module of fire-fighting, interface and indicating module；Described internal electric source selecting module includes audion drive module and relay modular converter, and Power convert is selected by relay, and external power supply is automatically selected by internal auxiliary switch；Described controller module includes a processor of single chip computer and its peripheral circuit, and described processor of single chip computer adopts STM8S105S single-chip microcomputer；The method that described on off state acquisition module adds light-coupled isolation using resistance current limliting；The double sub-signal processing module of described fire-fighting is using exchange optocoupler method collection；Described interface and indicating module include：Communication module, indicator board port module, LED display module, switching mode and fault time delay module, checking mode module.
6. a kind of intelligent double-power supply switching device according to claim 1 it is characterised in that：Described double enter singly to go out inverse-excitation type switch power-supply and possess 6 kinds of mode of operations, this 6 kinds of mode of operations are specific as follows：
Pattern 1：Conventional power loss, conventional side direct current switches the actuating of relay, and prepped side rectification output is connected to conventional side π type input filter module, and the output voltage of conventional side is normal, and equipment can normally run；
Pattern 2：Stand-by power supply dead electricity, prepped side direct current switches the actuating of relay, and rectification output in conventional side is connected to prepped side π type input filter module, and the output voltage of prepped side is normal, and equipment can normally run；
Pattern 3：Conventional power loss, and conventional anti exciting converter module failure, conventional side direct current switches the actuating of relay, prepped side rectification output is connected to conventional side π type input filter module, conventional side does not export, prepped side output voltage is normal, and equipment can normally run；
Pattern 4：Stand-by power supply dead electricity, and standby anti exciting converter module failure, prepped side direct current switches the actuating of relay, rectification output in conventional side is connected to prepped side π type input filter module, prepped side does not export, conventional side output voltage is normal, and equipment can normally run；
Pattern 5：Conventional power loss, and standby anti exciting converter module failure, conventional side direct current switches the actuating of relay, prepped side rectification output is connected to conventional side π type input filter module, conventional side output voltage is normal, and prepped side does not export, and equipment can normally run；
Pattern 6：Stand-by power supply dead electricity, and conventional anti exciting converter module failure, prepped side direct current switches the actuating of relay, rectification output in conventional side is connected to prepped side π type input filter module, prepped side output voltage is normal, and conventional side does not export, and equipment can normally run.
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