CN205249247U - POE power supply system - Google Patents
POE power supply system Download PDFInfo
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- CN205249247U CN205249247U CN201521128291.9U CN201521128291U CN205249247U CN 205249247 U CN205249247 U CN 205249247U CN 201521128291 U CN201521128291 U CN 201521128291U CN 205249247 U CN205249247 U CN 205249247U
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Abstract
The utility model provides a POE power supply system, including the feeder ear and the receiving end of going the same way at least, each way receiving end all and between the feeder ear is connected with a control switch, still includes the singlechip, and each control switch parallelly connected detects resistance, detects a resistance warp bleeder circuit and causes the sense terminal that the singlechip is corresponding, and each control switch's control end causes the control output that corresponds with the singlechip. The beneficial effect of the utility model: only can realize the POE power supply through singlechip, control switch and less passive component, whether the electricity back has voltage fluctuation to judge whether useful electrical apparatus inserts, and circuit structure is simple, and the response accurately realizes multichannel receiving end power break -make rapidly fast through detecting the receiving end on the feeder ear.
Description
Technical field
The utility model relates to for electrical domain, specifically refers to a kind of POE electric power system.
Background technology
POE power supply refers to and utilizes Ethernet to power, and is conventionally applied to industrial circle and substantially can be applied in family expenses neckTerritory, the industrial circle herein referring to refers to for example airport, the relatively large place of railway station geometric ratio, due to wiring cost higher withSo and the inconvenient POE that usually can utilize of wiring powers. Existing POE electric power-feeding structure comprises that a power supply unit (also claims power supplyEnd), a power receiving equipment (also claiming receiving end), is connected by several netting twines between power supply unit and power receiving equipment, wherein passes throughNetting twine A is supply voltage 48V, transmits the voltage of shaking hands by netting twine B, and whether netting twine A is communicated with by switch is determined. ExistingIn this power supply unit, contain PSE chip, in power receiving equipment, contain PD chip, in the time that PSE chip and PD chip coincide, (whether kissClose and see whether path of netting twine B, if coincide, path, if misfitted, opens circuit) closing switch makes netting twine A path, makesPower supply unit is to supplying power for powered device. The kind of power receiving equipment has much for example router, IPPhone etc., and this type of is subject toIt is that the DC current of 12V is powered that electricity equipment needs voltage.
If above-mentioned POE electric power-feeding structure is applied in household field, can be costly (reason is because PSE chipAnd PD chip need to just can use by license). Therefore how to provide one to be applicable to domestic environments and need not adopt speciallyThe POE electric power system of door PSE chip is just called the technical problem of being badly in need of solution.
Utility model content
The problems referred to above that the utility model exists for prior art, provide a kind of POE electric power system.
Above-mentioned utility model object of the present utility model realizes by following scheme:
POE electric power system, comprises feeder ear Vcc1 and at least one road receiving end, and each road receiving end is all and between feeder earBe connected with a gauge tap, also comprise single-chip microcomputer U3, each gauge tap in parallel detects resistance, detects resistance through one point of piezoelectricityPass is to test side corresponding to single-chip microcomputer U3, and the control end of each gauge tap causes the control output corresponding with single-chip microcomputer U3End, whether ohmically voltage is detected by this road of Real-time Collection in each test side of single-chip microcomputer U3 has fluctuation to judge whether electricity consumptionDevice accesses and then drives this way control switch ON/OFF.
Further, receiving end comprises the first receiving end X1, and the first receiving end X1 positive pole is connected with feeder ear Vcc1 is anodalAnd connect working power VC12; The first receiving end X1 negative pole divides makes two-way, and a road connects through current-limiting resistance and the first gauge tap U1Connect feeder ear Vcc1 negative pole and connect GND, another road is through connecting place of working as the 6th resistance R 6 that detects resistanceGND, one end that the 6th resistance R 6 causes the first receiving end X1 negative pole rear connection feeder ear of the second resistance R 2 Vcc1 positive pole of also connecting,The second resistance R 2 and the 6th resistance R 6 form I level bleeder circuit; One end that the 6th resistance R 6 causes the first receiving end X1 negative pole alsoBe connected with single-chip microcomputer U3 the first test side AD1 through the 3rd resistance R 3, the 3rd resistance R 3 connects one end of the first test side AD1 and passes throughThe 5th resistance R 5 connects GND, and the 3rd resistance R 3 and the 5th resistance R 5 form II level bleeder circuit.
Further, the first gauge tap U1 is metal-oxide-semiconductor, and the source electrode of the first gauge tap U1 connects GND, firstThe grid of gauge tap U1 connects the first receiving end through series connection as the 11 resistance R the 11, the 13 resistance R 13 of current-limiting resistanceThe negative pole of X1, the drain electrode of the first gauge tap U1 connects the first control output end OC1 of single-chip microcomputer U3 through the tenth resistance R 10, theThe drain electrode of one gauge tap U1 also connects GND through the 17 resistance R 17 as pull down resistor.
Further, the resistance grade of the 11 resistance R the 11 and the 13 resistance R 13 is less than the second resistance R 2 and the 6th electricityResistance R6 resistance grade, the resistance grade of the second resistance R 2 and the 6th resistance R 6 is less than the 3rd resistance R 3 and the 5th resistance R 5 resistances etc.Level.
Further, also comprise a voltage stabilizing chip U4, input one tunnel of voltage stabilizing chip U4 connects feeder ear Vcc1 positive poleAnother road connects GND through the 4th capacitor C 4 as input filter capacitor, and output one tunnel of voltage stabilizing chip U4 connectsAnother road of working power end VDD of single-chip microcomputer U3 connects GND, voltage stabilizing through the 3rd capacitor C 3 as output filter capacitorThe earth terminal of chip U4 connects GND.
Further, single-chip microcomputer U3 has the first Enable Pin POE1en corresponding with the first control output end OC1, and first makesCan hold POE1en to be connected with remote controllers through the 15 resistance R 15, when the first Enable Pin POE1en is low level, first controlsOutput OC1 allows output.
Further, receiving end also comprises the second receiving end X2, the first receiving end X2 positive pole and the anodal phase of feeder ear Vcc1Connect and connect working power VC12; The second receiving end X2 negative pole divides makes two-way, and a road is through current-limiting resistance and the second gauge tap U2Connect feeder ear Vcc1 negative pole and connect GND, another road is through connecting place of working as the 9th resistance R 9 that detects resistanceGND, one end that the 9th resistance R 9 causes the second receiving end X2 negative pole rear connection feeder ear of the first resistance R 1 Vcc1 positive pole of also connecting,The first resistance R 1 and the 9th resistance R 9 form I level bleeder circuit; One end that the 9th resistance R 9 causes the second receiving end X2 negative pole alsoBe connected with single-chip microcomputer U3 the second test side AD2 through the 4th resistance R 4, the 4th resistance R 4 connects one end of the second test side AD2 and passes throughThe 8th resistance R 8 connects GND, and the 4th resistance R 4 and the 8th resistance R 8 form II level bleeder circuit.
Further, the second gauge tap U2 is metal-oxide-semiconductor, and the source electrode of the second gauge tap U2 connects GND, secondThe grid of gauge tap U2 connects the second receiving end through series connection as the 12 resistance R the 12, the 14 resistance R 14 of current-limiting resistanceThe negative pole of X2, the drain electrode of the second gauge tap U2 connects the second control output end OC2 of single-chip microcomputer U3, second through the 7th resistance R 7The drain electrode of gauge tap U2 also connects GND through the 18 resistance R 18 as pull down resistor; The 12 resistance R 12 HesThe resistance grade of the 14 resistance R 14 is less than the first resistance R 1 and the 9th resistance R 9 resistance grades, the first resistance R 1 and the 9th electricityThe resistance grade of resistance R9 is less than the 4th resistance R 4 and the 8th resistance R 8 resistance grades; Single-chip microcomputer U3 has and the second control output endThe second Enable Pin POE2en that OC2 is corresponding, the second Enable Pin POE2en is connected with remote controllers through the 16 resistance R 16, theWhen two Enable Pin POE2en are low level, the second control output end OC2 allows output.
The beneficial effects of the utility model are: only can be real by single-chip microcomputer, gauge tap and less passive elementWhether existing POE power supply, have voltage pulsation to judge whether electrical appliance access, circuit by detecting receiving end after feeder ear powers onSimple in structure, response rapidly, realizes multichannel receiving end on/off rapidly and accurately; Gauge tap adopts metal-oxide-semiconductor, its impedanceLittle, volume is little, the little and response of energy consumption rapidly, is convenient to overall system design and is arranged; This system can also integrated overload protection merit simultaneouslyCan, effectively improve electrical safety.
Brief description of the drawings
Fig. 1 is the circuit diagram of the utility model embodiment mono-;
Fig. 2 is the circuit diagram of the utility model embodiment bis-.
Detailed description of the invention
Embodiment mono-
Shown in accompanying drawing 1, POE electric power system of the present utility model, comprises feeder ear Vcc1 and at least one road receiving end,Each road receiving end all and between feeder ear is connected with a gauge tap, also comprises single-chip microcomputer U3, each gauge tap parallel connection oneDetect resistance, detect resistance and cause through a bleeder circuit test side that single-chip microcomputer U3 is corresponding, the control end of each gauge tap drawsTo the control output end corresponding with single-chip microcomputer U3, ohmically electricity is detected by this road of Real-time Collection in each test side of single-chip microcomputer U3Press and whether have fluctuation to judge whether electrical appliance access and then driven this way control switch ON/OFF. For electrical appliance power supplyInput all has capacitive element, in the time applying voltage, can charge and to detect conductive discharge, thereby cause detecting ohmically electricityPressure value presents fluctuation.
In the present embodiment, receiving end comprises the first receiving end X1, the first receiving end X1 positive pole and the anodal phase of feeder ear Vcc1Connect and connect working power VC12; The first receiving end X1 negative pole divides makes two-way, and a road is through current-limiting resistance and the first gauge tap U1Connect feeder ear Vcc1 negative pole and connect GND, another road is through connecting place of working as the 6th resistance R 6 that detects resistanceGND, one end that the 6th resistance R 6 causes the first receiving end X1 negative pole rear connection feeder ear of the second resistance R 2 Vcc1 positive pole of also connecting,The second resistance R 2 and the 6th resistance R 6 form I level bleeder circuit; One end that the 6th resistance R 6 causes the first receiving end X1 negative pole alsoBe connected with single-chip microcomputer U3 the first test side AD1 through the 3rd resistance R 3, the 3rd resistance R 3 connects one end of the first test side AD1 and passes throughThe 5th resistance R 5 connects GND, and the 3rd resistance R 3 and the 5th resistance R 5 form II level bleeder circuit. By two fractions are setThe ohmically magnitude of voltage of the accurate acquisition testing of volt circuit changes.
The first gauge tap U1 is metal-oxide-semiconductor, and the source electrode of the first gauge tap U1 connects GND, the first gauge tapThe grid of U1 connects the negative of the first receiving end X1 through series connection as the 11 resistance R the 11, the 13 resistance R 13 of current-limiting resistanceThe utmost point, the drain electrode of the first gauge tap U1 connects the first control output end OC1 of single-chip microcomputer U3 through the tenth resistance R 10, and first controlsThe drain electrode of switch U1 also connects GND through the 17 resistance R 17 as pull down resistor.
The resistance grade of the 11 resistance R the 11 and the 13 resistance R 13 is less than the second resistance R 2 and the 6th resistance R 6 resistancesGrade, the resistance grade of the second resistance R 2 and the 6th resistance R 6 is less than the 3rd resistance R 3 and the 5th resistance R 5 resistance grades.
Also comprise a voltage stabilizing chip U4, input one tunnel of voltage stabilizing chip U4 connects anodal another Lu Jingzuo of feeder ear Vcc1For the 4th capacitor C 4 of input filter capacitor connects GND, output one tunnel of voltage stabilizing chip U4 connects single-chip microcomputer U3'sAnother road of working power end VDD connects GND through the 3rd capacitor C 3 as output filter capacitor, and voltage stabilizing chip U4 connectsGround end connects GND.
Single-chip microcomputer U3 has the first Enable Pin POE1en corresponding with the first control output end OC1, the first Enable PinPOE1en is connected with remote controllers through the 15 resistance R 15, and when the first Enable Pin POE1en is low level, first controls outputEnd OC1 allows output.
Embodiment bis-
Shown in Fig. 2, the present embodiment comprises two-way receiving end, and receiving end also comprises the second receiving end X2, firstReceiving end X2 positive pole is connected and is connected working power VC12 with feeder ear Vcc1 is anodal; The second receiving end X2 negative pole divides makes two-way,One tunnel is connected feeder ear Vcc1 negative pole and connects GND with the second gauge tap U2 through current-limiting resistance, and another road is through conductThe 9th resistance R 9 that detects resistance connects GND, and the 9th resistance R 9 causes one end of the second receiving end X2 negative pole and also connectsThe rear connection feeder ear of the first resistance R 1 Vcc1 positive pole, the first resistance R 1 and the 9th resistance R 9 form I level bleeder circuit; The 9th resistanceOne end that R9 causes the second receiving end X2 negative pole is also connected with single-chip microcomputer U3 the second test side AD2 through the 4th resistance R 4, the 4th electricityOne end that resistance R4 connects the second test side AD2 connects GND by the 8th resistance R 8, the 4th resistance R 4 and the 8th resistance R 8Composition II level bleeder circuit.
The second gauge tap U2 is metal-oxide-semiconductor, and the source electrode of the second gauge tap U2 connects GND, the second gauge tapThe grid of U2 connects the negative of the second receiving end X2 through series connection as the 12 resistance R the 12, the 14 resistance R 14 of current-limiting resistanceThe utmost point, the drain electrode of the second gauge tap U2 connects the second control output end OC2 of single-chip microcomputer U3 through the 7th resistance R 7, and the second control is openedThe drain electrode of closing U2 also connects GND through the 18 resistance R 18 as pull down resistor; The 12 resistance R the 12 and the 14The resistance grade of resistance R 14 is less than the first resistance R 1 and the 9th resistance R 9 resistance grades, the first resistance R 1 and the 9th resistance R 9Resistance grade is less than the 4th resistance R 4 and the 8th resistance R 8 resistance grades; Single-chip microcomputer U3 has and the second control output end OC2 coupleThe the second Enable Pin POE2en answering, the second Enable Pin POE2en is connected with remote controllers through the 16 resistance R 16, and second enablesWhen end POE2en is low level, the second control output end OC2 allows output.
Although the utility model illustrates and describes by reference to preferred embodiment,, this area is commonTechnical staff should understand, and can be not limited to the description of above-described embodiment, in the scope of claims, can make form andVarious variations in details.
Claims (8)
1.POE electric power system, comprises feeder ear (Vcc1) and at least one road receiving end, and each road receiving end is all and between feeder earBe connected with a gauge tap, it is characterized in that: also comprise single-chip microcomputer (U3), each gauge tap in parallel detects resistance, detectsResistance causes through a bleeder circuit test side that single-chip microcomputer (U3) is corresponding, and the control end of each gauge tap causes and single-chip microcomputer(U3) corresponding control output end.
2. POE electric power system according to claim 1, is characterized in that: receiving end comprises the first receiving end (X1), firstReceiving end (X1) is anodal to be connected and to be connected working power (VC12) with feeder ear (Vcc1) is anodal; The first receiving end (X1) negative pole dividesMake two-way, a road is connected feeder ear (Vcc1) negative pole and connects place of working (GND) with the first gauge tap (U1) through current-limiting resistance,Another road is through connecting place of working (GND) as the 6th resistance (R6) that detects resistance, and the 6th resistance (R6) causes the first receiving end(X1) also connect and connect feeder ear (Vcc1) positive pole, the second resistance (R2) and the 6th resistance after the second resistance (R2) in one end of negative pole(R6) composition I level bleeder circuit; The 6th resistance (R6) causes one end of the first receiving end (X1) negative pole also through the 3rd resistance (R3)Be connected with single-chip microcomputer (U3) the first test side (AD1), the 3rd resistance (R3) connects one end of the first test side (AD1) by the 5thResistance (R5) connects place of working (GND), the 3rd resistance (R3) and the 5th resistance (R5) composition II level bleeder circuit.
3. POE electric power system according to claim 2, is characterized in that: the first gauge tap (U1) is metal-oxide-semiconductor, firstThe source electrode of gauge tap (U1) connects place of working (GND), the grid of the first gauge tap (U1) through series connection as current-limiting resistanceThe 11 resistance (R11), the 13 resistance (R13) connect the negative pole of the first receiving end (X1), the leakage of the first gauge tap (U1)The utmost point connects first control output end (OC1) of single-chip microcomputer (U3) through the tenth resistance (R10), the drain electrode of the first gauge tap (U1) alsoConnect place of working (GND) through the 17 resistance (R17) as pull down resistor.
4. POE electric power system according to claim 3, is characterized in that: the 11 resistance (R11) and the 13 resistance(R13) resistance grade is less than the second resistance (R2) and the 6th resistance (R6) resistance grade, the second resistance (R2) and the 6th resistance(R6) resistance grade is less than the 3rd resistance (R3) and the 5th resistance (R5) resistance grade.
5. POE electric power system according to claim 1, is characterized in that: also comprise a voltage stabilizing chip (U4), voltage stabilizing chip(U4) input one tunnel connects anodal another road of feeder ear (Vcc1) and connects through the 4th electric capacity (C4) as input filter capacitorConnect place of working (GND), output one tunnel of voltage stabilizing chip (U4) connects another road warp of working power end (VDD) of single-chip microcomputer (U3)The 3rd electric capacity (C3) as output filter capacitor connects place of working (GND), and the earth terminal of voltage stabilizing chip (U4) connects place of working（GND）。
6. POE electric power system according to claim 3, is characterized in that: single-chip microcomputer (U3) has and the first control outputThe first Enable Pin (POE1en) that end (OC1) is corresponding, the first Enable Pin (POE1en) is connected with long-range through the 15 resistance (R15)Controller, when the first Enable Pin (POE1en) is low level, the first control output end (OC1) allows output.
7. POE electric power system according to claim 2, is characterized in that: receiving end also comprises the second receiving end (X2), theOne receiving end (X2) is anodal to be connected and to be connected working power (VC12) with feeder ear (Vcc1) is anodal; The second receiving end (X2) negative poleDivide and make two-way, a road is connected feeder ear (Vcc1) negative pole and connects place of working with the second gauge tap (U2) through current-limiting resistance(GND), another road is through connecting place of working (GND) as the 9th resistance (R9) that detects resistance, and the 9th resistance (R9) causes secondAlso connect and connect feeder ear (Vcc1) positive pole after the first resistance (R1) in one end of receiving end (X2) negative pole, the first resistance (R1) and theNine resistance (R9) composition I level bleeder circuit; The 9th resistance (R9) causes one end of the second receiving end (X2) negative pole also through the 4th electricityResistance (R4) is connected with single-chip microcomputer (U3) the second test side (AD2), and one end that the 4th resistance (R4) connects the second test side (AD2) leads toCross the 8th resistance (R8) and connect place of working (GND), the 4th resistance (R4) and the 8th resistance (R8) composition II level bleeder circuit.
8. POE electric power system according to claim 7, is characterized in that: the second gauge tap (U2) is metal-oxide-semiconductor, secondThe source electrode of gauge tap (U2) connects place of working (GND), the grid of the second gauge tap (U2) through series connection as current-limiting resistanceThe 12 resistance (R12), the 14 resistance (R14) connect the negative pole of the second receiving end (X2), the leakage of the second gauge tap (U2)The utmost point connects second control output end (OC2) of single-chip microcomputer (U3) through the 7th resistance (R7), the drain electrode of the second gauge tap (U2) alsoConnect place of working (GND) through the 18 resistance (R18) as pull down resistor; The 12 resistance (R12) and the 14 resistance(R14) resistance grade is less than the first resistance (R1) and the 9th resistance (R9) resistance grade, the first resistance (R1) and the 9th resistance(R9) resistance grade is less than the 4th resistance (R4) and the 8th resistance (R8) resistance grade; Single-chip microcomputer (U3) has and the second controlThe second Enable Pin (POE2en) that output (OC2) is corresponding, the second Enable Pin (POE2en) is connected with through the 16 resistance (R16)Remote controllers, when the second Enable Pin (POE2en) is low level, the second control output end (OC2) allows output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521128291.9U CN205249247U (en) | 2015-12-30 | 2015-12-30 | POE power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521128291.9U CN205249247U (en) | 2015-12-30 | 2015-12-30 | POE power supply system |
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| CN205249247U true CN205249247U (en) | 2016-05-18 |
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| CN201521128291.9U Active CN205249247U (en) | 2015-12-30 | 2015-12-30 | POE power supply system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812377A (en) * | 2019-04-10 | 2020-10-23 | 杭州海康威视数字技术股份有限公司 | Network power supply detection device |
| CN112714002A (en) * | 2020-12-04 | 2021-04-27 | 杭州士兰微电子股份有限公司 | Power receiving control device, power receiving end equipment and Ethernet power supply system |
| CN112730967A (en) * | 2020-12-30 | 2021-04-30 | 深圳市丰润达科技有限公司 | PSE monitoring circuit and device |
| CN113765048A (en) * | 2021-07-28 | 2021-12-07 | 惠州市德赛西威汽车电子股份有限公司 | Circuit and system for ensuring input voltage of secondary power supply based on central control ground offset voltage |
-
2015
- 2015-12-30 CN CN201521128291.9U patent/CN205249247U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812377A (en) * | 2019-04-10 | 2020-10-23 | 杭州海康威视数字技术股份有限公司 | Network power supply detection device |
| CN112714002A (en) * | 2020-12-04 | 2021-04-27 | 杭州士兰微电子股份有限公司 | Power receiving control device, power receiving end equipment and Ethernet power supply system |
| CN112714002B (en) * | 2020-12-04 | 2023-03-24 | 杭州士兰微电子股份有限公司 | Power receiving control device, power receiving end equipment and Ethernet power supply system |
| CN112730967A (en) * | 2020-12-30 | 2021-04-30 | 深圳市丰润达科技有限公司 | PSE monitoring circuit and device |
| CN112730967B (en) * | 2020-12-30 | 2022-02-08 | 深圳市丰润达科技有限公司 | PSE monitoring circuit and device |
| CN113765048A (en) * | 2021-07-28 | 2021-12-07 | 惠州市德赛西威汽车电子股份有限公司 | Circuit and system for ensuring input voltage of secondary power supply based on central control ground offset voltage |
| CN113765048B (en) * | 2021-07-28 | 2024-03-19 | 惠州市德赛西威汽车电子股份有限公司 | Circuit and system for guaranteeing input voltage of secondary power supply based on central control ground offset voltage |
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