CN107276419A - Power detecting and transmitting circuit and power supply - Google Patents
Power detecting and transmitting circuit and power supply Download PDFInfo
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- CN107276419A CN107276419A CN201710160835.7A CN201710160835A CN107276419A CN 107276419 A CN107276419 A CN 107276419A CN 201710160835 A CN201710160835 A CN 201710160835A CN 107276419 A CN107276419 A CN 107276419A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 58
- 238000011069 regeneration method Methods 0.000 claims abstract description 50
- 230000008929 regeneration Effects 0.000 claims abstract description 49
- 230000008878 coupling Effects 0.000 claims abstract description 6
- 238000010168 coupling process Methods 0.000 claims abstract description 6
- 238000005859 coupling reaction Methods 0.000 claims abstract description 6
- 238000004088 simulation Methods 0.000 claims description 84
- 238000012545 processing Methods 0.000 claims description 20
- 230000001939 inductive effect Effects 0.000 claims description 17
- 230000007935 neutral effect Effects 0.000 claims description 16
- 239000004020 conductor Substances 0.000 claims description 15
- 230000010355 oscillation Effects 0.000 claims description 13
- 238000012937 correction Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 16
- 238000013461 design Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 3
- 238000010586 diagram Methods 0.000 description 19
- 230000004044 response Effects 0.000 description 5
- 230000010354 integration Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000013256 coordination polymer Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical group O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/338—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a power supply detection and transmission circuit, which comprises a first conversion circuit, a second conversion circuit and a signal coupling circuit. The first conversion circuit is electrically connected with the power module to obtain an analog input signal and convert the analog input signal into a first pulse width modulation signal. The second conversion circuit converts the second pulse width modulation signal into an analog regeneration signal and transmits the analog regeneration signal to the microcontroller, and the microcontroller calculates the energy information of the power module according to the analog regeneration signal. The signal coupling circuit is coupled between the first converting circuit and the second converting circuit, and is used for coupling the first pulse width modulation signal to the second converting circuit so as to generate the second pulse width modulation signal. The power detection and transmission circuit can simplify the circuit design and reduce the complexity of the program design, thereby greatly reducing the production cost. The invention also discloses a power supply with the power detection and transmission circuit.
Description
Technical field
The present disclosure generally relates to the measuring energy of power supply unit, a simulation of espespecially a kind of primary side by a power module
Input signal is changed and is coupled to the secondary side of the power module, with the secondary side in the power module calculate the power module it
The electric power detecting and transmission circuit of energy information, and its related power supply unit.
Background technology
Traditional power supply unit needs to use the microcontroller of primary side to measure input voltage signal and input current
Signal, and need a universal asynchronous receiving-transmitting transmitter (Universal Asynchronous Receiver/
Transmitter, UART) measurement is sent to the microcontroller integration of secondary side by interface (being labeled as " UART ").Lift
For example, in Fig. 1, traditional power supply unit 100 need primary side in power module 110 using microcontroller 120 come
Live wire LN analog voltage signal and neutral conductor NT analog voltage signal are captured, and is set in the primary side of power module 110
Inductive reactance RS is put so that microcontroller 120 measures an input current signal CT.After the measurement for completing voltage x current is calculated,
The numerical value calculated is sent to the microcontroller 130 positioned at secondary side through UART interfaces by microcontroller 120.Microcontroller
The measurement information that 130 meeting integrations are received (includes output voltage VOAnd output current IODetecting result), then via a power supply
The extremely load 400 of the complete system power supply information of management bus (Power Management Bus, PMBus) submitting, such as voltage,
Electric current, power, frequency and rotation speed of the fan.
However, measuring input voltage/current signal using microcontroller in primary side, many problems can be produced.Citing
For, microcontroller 120 needs extra mu balanced circuit and independent earth-return path (ground path), and microcontroller
120 must be by means of being additionally arranged on the inductive reactance RS of primary side to measure input current, and these can all cause energy loss
Increase.Further, since the microcontroller 120 positioned at primary side needs powerful surge voltage tolerance, thus increase circuit
Complexity and circuit cost.Furthermore, microcontroller 120 is needed the data transmission calculated to microcontroller by UART interfaces
130, this will increase the complexity that formula is designed.
Accordingly, it would be desirable to a kind of electric power detecting framework of innovation come simplify circuit design and reduction production cost.
The content of the invention
In view of this, an object of the present invention is the simulation input for providing a kind of primary side by a power module
Signal is changed and is coupled to the secondary side of the power module, and the energy of the power module is calculated with the secondary side in the power module
The electric power detecting and transmission circuit of information and the power supply unit of correlation, to solve the above problems.
According to one of present invention embodiment, it discloses a kind of electric power detecting and transmission circuit.The electric power detecting and transmission electricity
Road includes one first change-over circuit, one second change-over circuit and a signal termination power.The first change-over circuit system electrically connects
A power module is connect to obtain a simulation input signal, and the simulation input signal is converted into one first PWM news
Number.Second change-over circuit regenerates the simulation one second pulse width modulation signal is converted into simulation regeneration signal
Signal is sent to a microcontroller, and the wherein microcontroller regenerates signal according to the simulation and believed to calculate the energy of the power module
Breath.The signal termination power system is coupled between first change-over circuit and second change-over circuit, to by first pulsewidth
Modulation signal is coupled to second change-over circuit, and produces second pulse width modulation signal according to this.
According to another embodiment of the present invention, it discloses a kind of electric power detecting and transmission circuit.The electric power detecting and transmission
Circuit includes one first change-over circuit, one second change-over circuit and a signal termination power.First change-over circuit is to detect
One of power module input voltage signal and an input current signal are surveyed, the input voltage signal is converted into one first pulsewidth
Modulation signal, and the input current signal is converted into one second pulse width modulation signal, wherein the input voltage signal is with being somebody's turn to do
Input current signal has identical phase.Second change-over circuit by one the 3rd pulse width modulation signal to be converted to one first
Simulation regenerates signal, one the 4th pulse width modulation signal is converted to one second simulation regeneration signal, and by first simulation again
Raw signal and the second simulation regeneration signal are sent to a microcontroller, and wherein the microcontroller is according to the first simulation regeneration news
Number and the second simulation regeneration signal calculate the energy information of the power module.The signal termination power system be coupled to this first
Between change-over circuit and second change-over circuit, first pulse width modulation signal is coupled into second change-over circuit, and
The 3rd pulse width modulation signal is produced according to this, and by second pulse width modulation signal coupled to second change-over circuit, and according to
To produce the 4th pulse width modulation signal.
According to another embodiment of the present invention, it discloses a kind of power supply unit.The power supply unit includes a power supply mould
Block, an electric power detecting and transmission circuit and a microcontroller.The power module includes an electromagnetic interference filter circuit, a rectification
Circuit, a circuit of power factor correction and a DC-to-DC switching circuit.The electric power detecting and transmission circuit include one first
Change-over circuit, one second change-over circuit and a signal termination power.The first change-over circuit system is electrically connected with the power module
To obtain a simulation input signal, and the simulation input signal is converted into one first pulse width modulation signal.Second conversion
Circuit by one second pulse width modulation signal to be converted to simulation regeneration signal.The signal termination power system be coupled to this first
Between change-over circuit and second change-over circuit, first pulse width modulation signal is coupled into second change-over circuit, and
Second pulse width modulation signal is produced according to this.The microcontroller system couples second change-over circuit, to receive simulation regeneration
Signal calculates the energy information of the power module.
Electric power detecting provided by the present invention and transmission architecture in primary side without setting microcontroller, UART interfaces and volume
Outer inductive reactance, you can calculate complete system power supply information.Therefore, electric power detecting and transmission frame provided by the present invention
Structure can not only simplify circuit design, can also reduce the complexity of formula design, and then production cost is greatly reduced.
Brief description of the drawings
Fig. 1 is the function block schematic diagram of traditional power supply unit.
Fig. 2 depicts the function block schematic diagram of one of power supply unit of the present invention embodiment.
Fig. 3 is the schematic diagram of one of the power supply unit shown in Fig. 2 embodiment.
Fig. 4 is the schematic diagram of an embodiment of the plurality of signals waveform involved by the signal subtraction device shown in Fig. 3.
Fig. 5 is the schematic diagram of an embodiment of the plurality of signals waveform involved by the comparator shown in Fig. 3.
Fig. 6 is the schematic diagram of an embodiment of the output signal waveform of the shown electric power detectings of Fig. 3 and transmission circuit.
Fig. 7 is the schematic diagram of an embodiment of the output signal waveform of the shown electric power detectings of Fig. 3 and transmission circuit.
Fig. 8 depicts the function block schematic diagram of one of the first change-over circuit shown in Fig. 2 embodiment.
Fig. 9 is schematic diagram of the microcontroller applied to one of power warning framework embodiment shown in Fig. 2.
Figure 10 is the schematic diagram of an embodiment of the plurality of signals waveform involved by the second change-over circuit shown in Fig. 3.
【Symbol description】
100th, 200,300 power supply unit
110th, 210,310 power module
120th, 130,230,330 microcontroller
220th, 320 electric power detectings and transmission circuit
222nd, 322,822 first change-over circuit
228 signal termination powers
229th, 329 second change-over circuit
312 electromagnetic interference filter circuits
314 rectification circuits
316 circuit of power factor correction
318 DC-to-DC switching circuits
323 signal subtraction devices
324 signal amplifiers
325th, 825 oscillator
326th, 327,826 comparator
328 optically coupled circuits
400th, 902 load
500 external power sources
823 signal processing circuits
904 switch elements
LN live wires
The NT neutral conductors
CT input current signals
RS inductive reactances
VOOutput voltage
IOOutput current
UART universal asynchronous receiving-transmitting transmitter interfaces
PMBus power management buses
VI input powers
VO out-put supplies
SAINSimulation input signal
SP1、SP2Pulse width modulation signal
SAR、SARV、SARISimulation regeneration signal
RI input sides
VA, VB voltage signal
RPInductive reactance
CPFilter capacitor
VINInput voltage signal
IINInput current signal
V1Hot voltage signal
V2Neutral conductor voltage signal
VACO、IACO、SPREPre-process signal
SS、SOSCOscillation signal
SPV1、SPV2、SPI1、SPI2Pulse width modulation signal
R1~R4Resistance
C1~C2Electric capacity
SALAlerting
SC controls signal
PR electric power
Embodiment
Pulse width modulation signal is converted to by by the analog signal input of the primary side of power module, and it will be changed
Pulse width modulation signal coupled to the secondary side of power module microcontroller, electric power detecting framework provided by the present invention without
The primary side of power module sets microcontroller, you can calculate the energy information of power module.In other words, it is provided by the present invention it
Electric power detecting and transmission architecture can calculate complete system and supply in the case of without primary side microcontroller and UART interfaces
Power information.Further instruction is as follows.
Fig. 2 depicts the function block schematic diagram of one of power supply unit of the present invention embodiment.Power supply unit 200 can be wrapped
Containing the power module 210 of (but not limited to) one, an electric power detecting and the microcontroller 230 of transmission circuit 220 and one.Power module
210 can receive an input power VI to produce an out-put supply VO, and wherein power module 210 can be by a power-supply unit
(power supply unit, PSU) is implemented.Electric power detecting and transmission circuit 220 are electrically connected at power module 210, are used to
Receive the simulation input signal SA from power module 210IN(for example, being produced in response to input power VI), and produce according to this
One simulation regeneration signal SAR, wherein simulation regeneration signal SARCan have and simulation input signal SAINSimilar/identical signal ripple
Shape.Microcontroller 230 just can receive simulation regeneration signal SARWith calculate power module 210 (or power supply unit 200) once
The line related information of side.Further, since microcontroller 230 can also detect out-put supply VO line related information (for example, micro-
Controller 230 can receive out-put supply VO and carry out the energy balane of correlation), therefore, microcontroller 230 just can integration power supply mould
The primary side of block 210 (or power supply unit 200) and the power information of secondary side, to calculate the energy that power module 210 is complete
Information.
In this embodiment, electric power detecting and transmission circuit 220 can be coupled comprising one first change-over circuit 222, a signal
The change-over circuit 229 of circuit 228 and 1 second.First change-over circuit 222 is that electric connection power module 210 is defeated to obtain simulation
Enter signal SAIN, and can be by simulation input signal SAINBe converted to a pulse width modulation signal SP1.Signal termination power 228 is coupled to
Between first change-over circuit 222 and the second change-over circuit 229, to by pulse width modulation signal SP1Coupled to the second change-over circuit
229, and a pulse width modulation signal SP is produced according to this2.In addition, the second change-over circuit 229 can be by pulse width modulation signal SP2Be converted to
Simulation regeneration signal SAR, microcontroller 230, which can be received, simulates regeneration signal SARTo carry out the calculating of energy information, and can be via
One power management bus (PMBus) sends out complete system power supply information.
In an embodiment, signal termination power 228 separately can be by pulse width modulation signal SP1With pulse width modulation signal SP2Every
From with the interference of reduction/suppression noise.In short, electric power detecting and transmission circuit 220 are first using the first change-over circuit
222 by simulation input signal SAINBe converted to a digital signal (pulse width modulation signal SP1), followed by signal termination power 228
The digital signal is coupled to the secondary side of power supply unit 200 from the primary side of power supply unit 200, and produces another numeral
Signal (pulse width modulation signal SP2), wherein pulse width modulation signal SP2With with pulse width modulation signal SP1Similar signal waveform
(for example, between the two only have signal amplitudes different), finally recycle the second change-over circuit 229 be based on another digital signal come
Produce simulation regeneration signal SAR, to provide power information of the microcontroller 230 on the primary side of power supply unit 200.So
One, power supply unit 200 just can be without setting a microcontroller in primary side, you can calculates complete system power supply letter
Breath.
Note that electric power detecting and transmission circuit 220 shown in Fig. 2 is for based on the detecting of the normal power of concept of the present invention
Framework, therefore, the circuit of the circuit framework shown in any use Fig. 2 each fall within scope of the invention.For the ease of understanding this hair
Bright technical characteristic, further illustrates the thin of power supply supply framework/electric power detecting framework of the present invention using an embodiment below
Section, however, other circuit implementations based on the circuit framework shown in Fig. 2 are also feasible.Referring to Fig. 3, its be Fig. 2 shown in it
The schematic diagram of one of power supply unit 200 embodiment.Power supply unit 300 can comprising a power module 310, an electric power detecting and
The microcontroller 330 of transmission circuit 320 and one, power module 210, electric power detecting and transmission circuit 220 shown in wherein Fig. 2 with
And microcontroller 230 can be respectively by power module 310, electric power detecting and transmission circuit 320 and microcontroller 330 be come implementation
It.Power module 310 can be including (but not limited to) an electromagnetic interference filter circuit (electromagnetic interference
Filter, EMI filter) 312, one rectification circuit (rectifier circuit), 314, one circuit of power factor correction
(power factor correction circuit, PFC circuit) 316 and one DC-to-DC switching circuit (DC/DC
converter circuit)318.In this embodiment, it is defeated that electromagnetic interference filter circuit 312 is coupled to one of rectification circuit 314
Enter side RI, and circuit of power factor correction 316 is coupled between rectification circuit 314 and DC-to-DC switching circuit 318.Power
Factor correcting circuit 316 can carry out PFC operation to a signal (a voltage signal VA) to be corrected, and produce according to this
Signal (a voltage signal VB) is to DC-to-DC switching circuit 318 after one correction.Due to those skilled in the art it should be appreciated that
The details of operation of each circuit unit in power module 310, therefore related explanation is just repeated no more herein.
Electric power detecting and transmission circuit 320 can include one first change-over circuit 322, an optically coupled circuit 328 and 1 the
Two change-over circuits 329, the first change-over circuit 222, the change-over circuit 229 of signal termination power 228 and second shown in wherein Fig. 2
Can by the first change-over circuit 322, the change-over circuit 329 of optically coupled circuit 328 and second come implementation it.In this embodiment, electricity
Source is detected and transmission circuit 320 can detect one of power module 310 input voltage and/or an input current, and will be detected
Result transmit to microcontroller 330.In order to make it easy to understand, first illustrating that electric power detecting and transmission circuit 320 carry out it below
Detecting voltage and the details of operation of transmission.
First change-over circuit 322 can be electrically connected at the input side RI of rectification circuit 314 to detect an input voltage signal
VIN(that is, a simulation input signal), wherein input voltage signal VINOne of rectification circuit 314 can be input into and treat rectification
Signal, or electromagnetic interference filter circuit 312 are filtered to input power VI and handle signal after one of produced filtering.Therefore,
Input voltage signal VINIt can reflect/indicate input power VI information of voltage.
Receiving input voltage signal VINAfter (the simulation input signal), the first change-over circuit 322 can be by input voltage
Signal VINBe converted to corresponding digital signal/pulse width modulation signal.For example, the first change-over circuit 322 can be comprising (but not
It is limited to) a signal subtraction device 323, an oscillator 325 and a comparator 326, wherein comparator 326 (being labeled as " CP ") coupling
In signal subtraction device 323 and oscillator 325 (being labeled as " OSC ").Signal subtraction device 323 (being labeled as "-") can be by input voltage
Signal VINComprising one of hot voltage signal V1(it can indicate that a live wire LN information of voltage) and neutral conductor voltage signal
V2(it can indicate that neutral conductor NT information of voltage) subtracts each other, to produce a pretreatment signal VACOTo comparator 326.Oscillator
325 can produce an oscillation signal SS to comparator 326.Next, comparator 326 just may compare pretreatment signal VACOWith vibration
Signal SS produces a pulse width modulation signal SPV1.Wherein above-mentioned signal subtraction device 323 can be a differential amplifier.
The first change-over circuit 322 that Fig. 4 and Fig. 5 is depicted shown in Fig. 3 carries out voltage signal conversion institute in an embodiment
The plurality of signals timing diagram being related to.First, please Fig. 4 is referred to together with Fig. 3.Fig. 4 is the institute of signal subtraction device 323 Fig. 3 Suo Shi
The schematic diagram of one embodiment of the plurality of signals waveform being related to.In this embodiment, signal subtraction device 323 can be by hot voltage
Signal V1With neutral conductor voltage signal V2Subtract each other to produce the pretreatment signal V with m type waveformsACO, wherein pretreatment signal VACO
Unit be volt (being labeled as " V "), hot voltage signal V1With neutral conductor voltage signal V2Unit for millivolt (be labeled as "
MV "), and the chronomere of transverse axis coordinate is the second (being labeled as " s ").It is worth noting that, signal subtraction device 323 can be by live wire
Voltage signal V1With neutral conductor voltage signal V2The result subtracted each other pre-processes signal V plus an offset voltage to produceACO, to be lifted
The accuracy of subsequent voltage conversion (the comparing operation of comparator 325).
Please Fig. 5 is referred to together with Fig. 3.Fig. 5 is one of the plurality of signals waveform involved by the comparator 326 shown in Fig. 3
The schematic diagram of embodiment.In this embodiment, comparator 326 can be according to pretreatment signal VACOWith both oscillation signal SS ratio
Relatively result produces pulse width modulation signal SPV1, wherein as pretreatment signal VACOSignal reference position be higher than oscillation signal SS signal
During level, pulse width modulation signal SPV1There can be high signal reference position.Consequently, it is possible to pulse width modulation signal SPV1It can indicate that pre- place
Manage signal VACOSignal information.
Pulse width modulation signal SP is produced in the first change-over circuit 322V1Afterwards, optically coupled circuit 328 can interrogate PWM
Number SPV1Coupled to the second change-over circuit 329, and a pulse width modulation signal SP is produced according to thisV2.Second change-over circuit 329 then may be used
By pulse width modulation signal SPV2Be converted to simulation regeneration signal SARV.Please Fig. 6 is referred to together with Fig. 3.Fig. 6 is the electricity shown in Fig. 3
The schematic diagram of one embodiment of the output signal waveform of source detecting and transmission circuit 320.In this embodiment, the second change-over circuit
329 can (it can include a plurality of resistance R by a low-pass filter circuit1~R4And a plurality of electric capacity C1~C2) implement, to utilize
Filtering process is by pulse width modulation signal SPV2It is regenerated as simulation regeneration signal SARV, the wherein low-pass filter circuit can be according to arteries and veins
Width modulation signal SPV2Middle different pulsewidth carries out discharge and recharge, and by pulse width modulation signal SPV2Reducing/regenerating is simulation regeneration news
Number SARV；Simulation regeneration signal SARVCan have and pretreatment signal VACOSimilar signal waveform.The low-pass filter circuit is by arteries and veins
Width modulation signal SPV2Reducing/regenerating is simulation regeneration signal SARVAn embodiment of signal processing see shown in Figure 10 it
Timing diagram.In other words, the second change-over circuit 329 can be by pulse width modulation signal SPV2Be converted to pretreatment signal VACORegeneration signal
(that is, simulation regeneration signal SARV), therefore, microcontroller 330 just can be according to simulation regeneration signal SARVTo calculate power supply mould
The information of voltage of the primary side of block 310.
Next explanation electric power detecting and transmission circuit 320 are carried out current sense and the details of operation of transmission.Please again
Secondary to refer to Fig. 3, in this embodiment, the first change-over circuit 322 can separately be electrically connected with the induced electricity among power module 310
Resistance, to detect input power VI current information via the inductive reactance.For example, the first change-over circuit 322 can electrically connect
It is connected to circuit of power factor correction 316 and one of includes inductive reactance RP(for example, being coupled to a filter capacitor CP) defeated to detect one
Enter current signal IIN(that is, a simulation input signal).Due to input current signal IINIt is inductive reactance RPIn response to voltage signal
VA and produce, therefore can reflect/indicate input power VI current information.Significantly, since the first change-over circuit 322
It (can directly be located inside power module 310) detecting input power VI current information via the inductive reactance, therefore, power supply is supplied
Device 300 is answered another inductive reactance can be additionally set without the input side in power module 310.
Receiving input current signal IINAfter (the simulation input signal), the first change-over circuit 322 can be by input current
Signal IINBe converted to corresponding digital signal/pulse width modulation signal.For example, the first change-over circuit 322 separately can comprising (but
It is not limited to) signal amplifier 324 and a comparator 327, wherein comparator 327 (being labeled as " CP ") is coupled to signal amplification
Device 324 and oscillator 325.Signal amplifier 324 (being labeled as " X ") can be by input current signal IINAmplify to produce a pretreatment
Signal IACO.Because oscillation signal SS can be sent to comparator 327 by oscillator 325, therefore, comparator 327 just may compare pre- place
Manage signal IACOA pulse width modulation signal SP is produced with oscillation signal SSI1.For example (but the invention is not restricted to this), when pre-
Handle signal IACOSignal reference position be higher than oscillation signal SS signal reference position when, pulse width modulation signal SPI1There can be high signal accurate
Position.In other words, pulse width modulation signal SPI1It can indicate that pretreatment signal IACOSignal information.
Operation to above-mentioned detecting voltage and transmission is similar, and pulse width modulation signal SP is produced in the first change-over circuit 322I1It
Afterwards, optically coupled circuit 328 can be by pulse width modulation signal SPI1Coupled to the second change-over circuit 329, and a PWM is produced according to this
Signal SPI2.Second change-over circuit 329 then can be by pulse width modulation signal SPI2Be converted to simulation regeneration signal SARI.Please together with
Fig. 3 refers to Fig. 7.Fig. 7 is showing for an embodiment of the output signal waveform of the shown electric power detectings of Fig. 3 and transmission circuit 320
It is intended to.In this embodiment, the second change-over circuit 329 can utilize filtering process by pulse width modulation signal SPI2It is regenerated as simulation
Regenerate signal SARI,Wherein simulation regeneration signal SARICan have and pretreatment signal IACO(unit is milli to similar signal waveform
Peace；It is labeled as " mA ").In other words, the second change-over circuit 329 can be by pulse width modulation signal SPI2Be converted to pretreatment signal IACO's
Regeneration signal (that is, simulation regeneration signal SARI), therefore, microcontroller 330 just can be according to simulation regeneration signal SARITo calculate
Go out the current information of the primary side of power module 310.
After above-mentioned electric power detecting and transmission operation, microcontroller 330 just can regenerate news according to the simulation received
Number SARVAnd simulation regeneration signal SARITo calculate the energy information of power module 310.For example, microcontroller 330 can be to mould
Intend regeneration signal SARVAnd simulation regeneration signal SARIComputing is sampled, and can be by operation result and out-put supply VO detecting
As a result be subject to integration, complete system power supply information sent out via power management bus, such as voltage, electric current, power, frequency with
And rotation speed of the fan.
It is worth noting that, electric power detecting and transmission circuit 320 can carry out above-mentioned detecting voltage and transmission operation, electricity simultaneously
Stream detecting and transmission are operated, and can also only carry out both above-mentioned detecting voltage and transmission operation, current sense and transmission operation
One of them.In addition, in the case of carrying out above-mentioned voltage conversion operation at the same time with electric current conversion operation, electric power detecting and transmission
The input voltage signal V that circuit 320 is received/detectedINWith input current signal IINThere can be identical phase.However, this hair
It is bright to be not limited thereto.
In addition, in the case of the signal termination power 228 shown in Fig. 2 is gone out come implementation using optically coupled circuit 328, due to
Optically coupled circuit 328 is not only effectively reduced/suppressed the interference of noise surging to lift the signal noise ratio of signal transmission path,
And can have the response speed of high speed, therefore, electric power detecting and transmission circuit 320 can be rapidly by the power information couplings of primary side
Secondary side is bonded to, to meet the demand for calculating energy in real time.
Only needing for explanation described above is note that, not for the limitation as the present invention.In an embodiment, Fig. 3
Shown electric power detecting and transmission circuit 320 can directly receive live wire LN institutes from the input side of electromagnetic interference filter circuit 312
The voltage signal that the voltage signal carried under one's arms is carried under one's arms with neutral conductor NT, with respectively as hot voltage signal V1With neutral line voltage
Signal V2.In another embodiment, the input voltage signal that electric power detecting and transmission circuit 320 are received from power module 310
VINWith input current signal IINCan have different phases.
In addition, the circuit framework of the first change-over circuit 322 shown in Fig. 3 is not used for the limitation as the present invention.It please connect
Fig. 8 is referred to Fig. 2.Fig. 8 depicts the function block schematic diagram of one of the first change-over circuit 222 shown in Fig. 2 embodiment.In
In this embodiment, the first change-over circuit 822 can include a signal processing circuit 823, an oscillator 825 and a comparator 826.
Signal processing circuit 823 can handle the simulation input signal SA from the power module 210 shown in Fig. 2IN, to produce a pretreatment
Signal SPRE, oscillator 825 can produce an oscillation signal SOSC.Comparator 826 is to be coupled to signal processing circuit 823 and oscillator
825, to compare pretreatment signal SPREWith oscillation signal SOSCTo produce pulse width modulation signal SP1。
So that voltage conversion is operated as an example, signal processing circuit 823 can be electrically connected with power module 210 and one of include rectification
One input side of circuit (for example, Fig. 3 shown in rectification circuit 314), to by simulation input signal SAINComprising a live wire
Voltage signal subtracts each other with a neutral conductor voltage signal, to produce pretreatment signal SPRE.For example, by the first change-over circuit
In the case of the first change-over circuit 322 shown in 822 framework applications to Fig. 3, at least a portion can for signal processing circuit 823
Signal subtraction device 323 as shown in Figure 3 come implementation it, oscillator 825 at least a portion can be as shown in Figure 3 oscillator 325
Come implementation it, and comparator 826 at least a portion can be as shown in Figure 3 comparator 326 come implementation it.Due to this area skill
Art personnel are via after the related description for reading Fig. 2~Fig. 4, it should be appreciated that the first change-over circuit 822 is applied to voltage conversion
Details of operation and its design variation, therefore further instruction is just repeated no more herein.
First change-over circuit 822 can also be applied to electric current conversion operation.For example, signal processing circuit 823 can be electrical
Connection power module 210 one of include one of circuit of power factor correction inductive reactance (for example, power factor shown Fig. 3
Inductive reactance R in correcting circuit 316P), to by simulation input signal SAINComprising an input current signal amplify with
Produce pretreatment signal SPRE, wherein the input current signal is as produced by the inductive reactance.For example, by first turn
In the case of changing the first change-over circuit 322 shown in the framework applications to Fig. 3 of circuit 822, at least the one of signal processing circuit 823
Part can be as shown in Figure 3 signal amplifier 324 come implementation it, oscillator 825 at least a portion can be as shown in Figure 3 vibration
Device 325 come implementation it, and comparator 826 at least a portion can be as shown in Figure 3 comparator 327 come implementation it.Due to this
Art personnel are via after the related description for reading Fig. 2~Fig. 3, it should be appreciated that the first change-over circuit 822 is applied to electric current
The details of operation and its design variation of conversion, therefore further instruction is just repeated no more herein.
In addition, the first change-over circuit 822 is being applied into the first change-over circuit 322 shown in Fig. 3 with progress voltage simultaneously
In the case of conversion operation is with electric current conversion operation, the signal phase that at least a portion can be as shown in Figure 3 of signal processing circuit 823
Subtract device 323 and signal amplifier 324 come implementation it, the oscillator 325 that at least a portion can be as shown in Figure 3 of oscillator 825
Implementation it, and comparator 826 comparator 326 and comparator 327 that at least a portion can be as shown in Figure 3 come implementation it.
Electric power detecting framework provided by the present invention can also judge in addition to it can calculate the energy information of power module
Whether input power is normal, and produces an interruption signal/alerting (alert signal) according to this.Please referred to together with Fig. 2
Fig. 9.Fig. 9 is schematic diagram of the microcontroller 230 applied to one of power warning framework embodiment shown in Fig. 2.In this embodiment
In, microcontroller 230 can determine whether whether input power VI is in abnormality, and decide whether to Switching power module according to this
210 power supply.For example, microcontroller 230 can detect simulation regeneration signal SARVoltage quasi position whether be less than or wait
In a predetermined level (for example, 0) more than a scheduled time, the power supply to judge power module 210 operates exception whether occur (also
That is, the voltage quasi position of input power VI is too low and causes abnormal electrical power supply).Signal SA is regenerated when detecting simulationRVoltage quasi position
When exceeding the scheduled time less than the predetermined level, the exportable alerting S of microcontroller 230ALTo a load 902 (such as
One server), order load 902 indicates (such as UPS (the uninterruptible power of an external power source 500
Supply, UPS) or battery module) an electric power PR is provided to power module 210.In this embodiment, load 902 can be in response to police
Show signal SALTo produce a control signal SC, power module 210 is given to cause a switch element 904 to provide electric power PR.
In addition, microcontroller 230 can be to simulation regeneration signal SARVoltage quasi position be sampled, and judge power supply according to this
Whether the power supply running of module 210 there is exception.For example, in simulation regeneration signal SARVoltage component can be as shown in Figure 6
Simulation regeneration signal SARVIn the case of to implement, microcontroller 230 can regenerate signal SA to the simulation with m type waveformsRV
(simulation regeneration signal SARVoltage quasi position) be sampled (and such as simulate numerical digit conversion sectional sampling operate) taken with producing one
Sample result.When the sampling result indicates simulation regeneration signal SARVVoltage quasi position (simulation regeneration signal SARVoltage quasi position)
When continuously the number of times less than the predetermined level is equal to a pre-determined number (such as 3 times), microcontroller 230 can detect simulation regeneration
Signal SARVoltage quasi position be less than the predetermined level and exceed the scheduled time, and then export alerting SALTo load 902.It is negative
902 are carried just in response to alerting SALPower module 210 is given to cause switch element 904 to provide the electric power PR of external power source 500,
To maintain the normal operation of power module 210.
In summary, electric power detecting provided by the present invention and transmission architecture without primary side set microcontroller,
UART interfaces and extra inductive reactance, you can calculate complete system power supply information.Therefore, power supply provided by the present invention
Detecting and transmission architecture can not only simplify circuit design, can also reduce the complexity of programming, and then are greatly reduced and are produced into
This.
The foregoing is only the preferred embodiments of the invention, all equivalent changes done according to scope of the present invention patent with
Modification, should all belong to the covering scope of the present invention.
Claims (15)
1. a kind of electric power detecting and transmission circuit, it is characterised in that including：
One first change-over circuit, is electrically connected with a power module to obtain a simulation input signal, first change-over circuit should
Simulation input signal is converted to one first pulse width modulation signal；
One second change-over circuit, one second pulse width modulation signal is converted into simulation regeneration signal, and by the simulation again
Raw signal is sent to a microcontroller, and the microcontroller regenerates signal according to the simulation to be believed to calculate the energy of the power module
Breath；And
One signal termination power, is coupled between first change-over circuit and second change-over circuit, to by first pulsewidth
Modulation signal is coupled to second change-over circuit, and produces second pulse width modulation signal according to this.
2. electric power detecting as claimed in claim 1 and transmission circuit, it is characterised in that first change-over circuit includes：
One signal processing circuit, to handle the simulation input signal to produce a pretreatment signal；
One oscillator, to produce an oscillation signal；And
One comparator, is coupled to the signal processing circuit and the oscillator, to compare the pretreatment signal and the oscillation signal
To produce first pulse width modulation signal.
3. electric power detecting as claimed in claim 2 and transmission circuit, it is characterised in that the simulation input signal includes a live wire
Voltage signal and a neutral conductor voltage signal, the signal processing circuit are to interrogate the hot voltage signal and the neutral line voltage
Number subtract each other to produce the pretreatment signal.
4. electric power detecting as claimed in claim 2 and transmission circuit, it is characterised in that the simulation input signal includes an electric current
Signal, the signal processing circuit is to amplify the current signal to produce the pretreatment signal, and the current signal is by the electricity
Among source module produced by an inductive reactance.
5. electric power detecting as claimed in claim 1 and transmission circuit, it is characterised in that second change-over circuit is a low pass filtered
Wave circuit.
6. electric power detecting as claimed in claim 1 and transmission circuit, it is characterised in that the signal termination power it is another by this first
Pulse width modulation signal is isolated with second pulse width modulation signal.
7. electric power detecting as claimed in claim 6 and transmission circuit, it is characterised in that the signal termination power is an optical coupling
Circuit.
8. a kind of electric power detecting and transmission circuit, it is characterised in that including：
One first change-over circuit, it is to detect one of power module input voltage signal and an input current signal, this is defeated
Enter voltage signal and be converted to one first pulse width modulation signal, and the input current signal is converted into one second PWM news
Number, wherein the input voltage signal has identical phase with the input current signal；
One second change-over circuit, one the 3rd pulse width modulation signal is converted into one first simulation regeneration signal, and by one
4th pulse width modulation signal is converted to one second simulation regeneration signal, and by the first simulation regeneration signal and second simulation again
Raw signal is sent to a microcontroller, and the microcontroller is according to the first simulation regeneration signal and the second simulation regeneration signal
Calculate the energy information of the power module；And
One signal termination power, is coupled between first change-over circuit and second change-over circuit, to by first pulsewidth
Modulation signal is coupled to second change-over circuit, and produces the 3rd pulse width modulation signal according to this, and second pulsewidth is adjusted
Become signal and be coupled to second change-over circuit, and produce the 4th pulse width modulation signal according to this.
9. electric power detecting as claimed in claim 8 and transmission circuit, it is characterised in that the input voltage signal includes a live wire
Voltage signal and a neutral conductor voltage signal；First change-over circuit includes：
One signal subtraction device, is pre-processed the hot voltage signal and the neutral conductor voltage signal to be subtracted each other with producing one first
Signal；
One signal amplifier, input current signal amplification to be produced to one second pretreatment signal, wherein input electricity
Signal is flowed as produced by an inductive reactance among the power module；
One oscillator, to produce an oscillation signal；
One first comparator, is coupled to the signal subtraction device and the oscillator, is shaken to compare the first pretreatment signal with this
Signal is swung to produce first pulse width modulation signal；And
One second comparator, is coupled to the signal amplifier and the oscillator, is shaken to compare the second pretreatment signal with this
Signal is swung to produce second pulse width modulation signal.
10. a kind of power supply unit, it is characterised in that including：
One power module, including an electromagnetic interference filter circuit, a rectification circuit, a circuit of power factor correction and circulate always
DC converting circuit；
One electric power detecting and transmission circuit, including：
One first change-over circuit, is electrically connected with the power module to obtain a simulation input signal, first change-over circuit should
Simulation input signal is converted to one first pulse width modulation signal；
One second change-over circuit, one second pulse width modulation signal is converted into simulation regeneration signal；And
One signal termination power, is coupled between first change-over circuit and second change-over circuit, to by first pulsewidth
Modulation signal is coupled to second change-over circuit, and produces second pulse width modulation signal according to this；And
One microcontroller, couples second change-over circuit, and the energy of the power module is calculated to receive simulation regeneration signal
Measure information.
11. power supply unit as claimed in claim 10, it is characterised in that first change-over circuit includes：
One signal processing circuit, to handle the simulation input signal to produce a pretreatment signal；
One oscillator, to produce an oscillation signal；And
One comparator, is coupled to the signal processing circuit and the oscillator, to compare the pretreatment signal and the oscillation signal
To produce first pulse width modulation signal.
12. power supply unit as claimed in claim 11, it is characterised in that the signal processing circuit is electrically connected with the rectified current
One input side on road, the simulation input signal includes a hot voltage signal and a neutral conductor voltage signal, signal processing
Circuit system subtracts each other the hot voltage signal and the neutral conductor voltage signal to produce the pretreatment signal.
13. power supply unit as claimed in claim 11, it is characterised in that the signal processing circuit be electrically connected with the power because
One of number correcting circuit inductive reactance, the simulation input signal includes a current signal, and the signal processing circuit interrogates the electric current
Number amplification is to produce the pretreatment signal, and the current signal is as produced by the inductive reactance.
14. power supply unit as claimed in claim 10, it is characterised in that the microcontroller can detect simulation regeneration signal
One of voltage quasi position whether be less than or equal to a predetermined level more than a scheduled time；And be less than when detecting the voltage quasi position
When the predetermined level exceedes the scheduled time, the microcontroller can export an alerting to a load, make the load indicate one
External power source provides an electric power to the power module.
15. power supply unit as claimed in claim 14, it is characterised in that the microcontroller regenerates being somebody's turn to do for signal to the simulation
Voltage quasi position is sampled to produce a sampling result；And when the sampling result indicates that the voltage quasi position is continuously pre- less than this
When the number of times for fixing position is equal to a pre-determined number, the microcontroller can detect the voltage quasi position and exceed this less than the predetermined level
The scheduled time.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201662315677P | 2016-03-31 | 2016-03-31 | |
| US62/315,677 | 2016-03-31 | ||
| TW106105500A TWI634405B (en) | 2016-03-31 | 2017-02-20 | Power detection and transmission circuit and power supply |
| TW106105500 | 2017-02-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107276419A true CN107276419A (en) | 2017-10-20 |
| CN107276419B CN107276419B (en) | 2019-08-06 |
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ID=60073766
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710160835.7A Active CN107276419B (en) | 2016-03-31 | 2017-03-17 | Power detecting and transmitting circuit and power supply |
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| Country | Link |
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| CN (1) | CN107276419B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS571972A (en) * | 1980-06-04 | 1982-01-07 | Toshiba Corp | Electronic type electric energy meter |
| TWI440870B (en) * | 2010-05-05 | 2014-06-11 | ||
| CN104345757A (en) * | 2013-07-26 | 2015-02-11 | 台达电子电源(东莞)有限公司 | Power detection and correction device and power detection and correction method |
-
2017
- 2017-03-17 CN CN201710160835.7A patent/CN107276419B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS571972A (en) * | 1980-06-04 | 1982-01-07 | Toshiba Corp | Electronic type electric energy meter |
| TWI440870B (en) * | 2010-05-05 | 2014-06-11 | ||
| CN104345757A (en) * | 2013-07-26 | 2015-02-11 | 台达电子电源(东莞)有限公司 | Power detection and correction device and power detection and correction method |
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| Publication number | Publication date |
|---|---|
| CN107276419B (en) | 2019-08-06 |
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