CN205212534U - Self -adaptation power monitoring switching circuit - Google Patents
Self -adaptation power monitoring switching circuit Download PDFInfo
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- CN205212534U CN205212534U CN201520995995.XU CN201520995995U CN205212534U CN 205212534 U CN205212534 U CN 205212534U CN 201520995995 U CN201520995995 U CN 201520995995U CN 205212534 U CN205212534 U CN 205212534U
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Abstract
The utility model discloses a self -adaptation power monitoring switching circuit relates to power monitoring switching technique field, and this circuit can let little the control unit be in all the time always has electric state. Commercial power interface, commercial power monitor cell's power input end and main electric the connection on an interface of power input end difference with electrical unit, commercial power monitor cell's high level output end electricity is connected on the grid G of MOS pipe switch, the anodal voltage output end electricity of stand -by power supply unit is connected on the source electrode S of MOS pipe switch, main anodal power output end electricity with electrical unit is connected on diode D2's negative pole, the drain electrode D of MOS pipe switch, anodal and little the control unit's of diode D2 anodal power input end difference electricity is connected on no. Two nodes, commercial power monitor cell's earthing terminal, owner are connected with publicly GND is electric respectively with electrical unit's earthing terminal, reserve electrical unit's earthing terminal and little the control unit's earthing terminal.
Description
Technical field
The utility model relates to power supply monitoring handoff technique field, is specifically related to a kind of adaptive power supply monitoring commutation circuit.
Background technology
Along with the application of intelligent electric energy meter and the continuous lifting of function, when electric network power-fail, need to store a large amount of data in time, but whether can judge that power down or electrical network interference shake are large defect and difficult points of current electric energy meter design timely and accurately, often because electrical network shakes the electric network power-fail misoperation caused, namely often electrical network shake is processed as electric network power-fail, cause the appearance of misoperation, thus cause larger loss to electric power system.
Current city's pyroelectric monitor commutation circuit, MCU is signaled to again after civil power power down being detected, send control signal by MCU again to switch to stand-by power supply to power source switching controller and power, real-time is poor, cause city's pyroelectric monitor commutation circuit can not be in electricity condition always, thus cause city's pyroelectric monitor commutation circuit there is no electricity to process the data message of needs process in time.Therefore, design a kind of adaptive power supply monitoring commutation circuit and seem very necessary.
Utility model content
The utility model is that to there is real-time poor in order to solve existing city pyroelectric monitor commutation circuit, cause city's pyroelectric monitor commutation circuit can not be in electricity condition always, thus the deficiency of the data message causing city's pyroelectric monitor commutation circuit not have electricity to process needs to process in time, there is provided a kind of real-time of electrical source exchange efficient in time, reliability is high, can micro-control unit be allowed all the time to be in electricity condition always, thus allow micro-control unit can have electricity to process a kind of adaptive power supply monitoring commutation circuit needing the data message of process in time.
Above technical problem is solved by following technical proposal:
Comprise commercial power interface, node, civil power monitoring means, metal-oxide-semiconductor switch, No. two nodes, micro-control unit, standby power unit, primary power cource unit, diode D2 and GND publicly, described commercial power interface, the power input of civil power monitoring means and the power input of primary power cource unit are connected electrically on an interface respectively, the high level output end of described civil power monitoring means is connected electrically in the grid G of metal-oxide-semiconductor switch, the cathode voltage output of described standby power unit is connected electrically in the source S of metal-oxide-semiconductor switch, the cathode power supply output of described primary power cource unit is connected electrically on the negative pole of diode D2, the drain D of described metal-oxide-semiconductor switch, the positive pole of diode D2 and the cathode power supply input of micro-control unit are connected electrically on No. two nodes respectively, the earth terminal of described civil power monitoring means, the earth terminal of primary power cource unit, the earth terminal of standby power unit and the earth terminal of micro-control unit are electrically connected with GND publicly respectively.
Be applicable to a use control method for a kind of adaptive power supply monitoring commutation circuit, use control method as follows:
Commercial power interface is connected on civil power;
When the non-power down of civil power, the civil power flowing into a Nodes is divided into two-way city electrical transmission, one road civil power successively after primary power cource unit, diode D2 and No. two node for micro-control unit is powered, another road civil power is monitored by civil power monitoring means real-time continuous, when civil power monitoring means carries out real-time continuous monitoring to civil power, the high level output end of civil power monitoring means can export high level signal to the grid G of metal-oxide-semiconductor switch simultaneously; Grid G due to metal-oxide-semiconductor switch has the circuit between the drain D of the source S of metal-oxide-semiconductor switch and metal-oxide-semiconductor switch to be in off-state when being high level signal, now only have civil power to be that micro-control unit is powered, and standby power unit is not powered to micro-control unit;
When civil power power down, civil power monitoring means can monitor without civil power input, and micro-control unit also inputs without civil power simultaneously; When civil power monitoring means inputs without civil power, the high level output end of civil power monitoring means also exports without high level signal, and now the grid G of metal-oxide-semiconductor switch just can not receive high level signal, and namely now the level signal of the grid G of metal-oxide-semiconductor switch is low level signal; Grid G due to metal-oxide-semiconductor switch has the circuit between the drain D of the source S of metal-oxide-semiconductor switch and metal-oxide-semiconductor switch to be in conducting state when being low level signal, and now civil power is not powered to micro-control unit, and only has standby power unit to be that micro-control unit is powered;
When civil power is sent a telegram here again after power down, civil power monitoring means has monitored again civil power input immediately, the high level output end of civil power monitoring means has again high level signal to export, now the grid G of metal-oxide-semiconductor switch receives again the high level signal that civil power monitoring means transmits, thus makes to be in off-state again between the drain D of the source S of metal-oxide-semiconductor switch and metal-oxide-semiconductor switch;
When being in off-state between the source S and the drain D of metal-oxide-semiconductor switch of metal-oxide-semiconductor switch, micro-control unit is again by mains-supplied;
When there being civil power, micro-control unit is by mains-supplied, when being powered by standby power unit without micro-control unit during civil power, move in circles, allow micro-control unit be in electricity condition all the time always, thus allow micro-control unit can have electricity to process the data message needing process in time.
The real-time of this programme electrical source exchange is efficient in time, and reliability is high, can micro-control unit be allowed all the time to be in electricity condition always, thus allows micro-control unit can have electricity to process the data message needing process in time.
As preferably, civil power monitoring means comprises step-down transformer, rectifier, power supply monitoring chip and resistance R1, the input of described step-down transformer is connected electrically on a node, the output of described step-down transformer is connected electrically on the input of rectifier, the output of described rectifier is connected electrically on the vdd terminal of power supply monitoring chip, the OUT end of described power supply monitoring chip is connected electrically on one end of resistance R1, the other end of described resistance R1 is connected electrically in the grid G of metal-oxide-semiconductor switch, the NC end of described power supply monitoring chip, the VSS end of power supply monitoring chip and the DS of power supply monitoring chip hold and are connected electrically in respectively publicly on GND.
As preferably, civil power monitoring means also comprises capacitor C1 and capacitor C2, one end of described electric capacity C1 and one end of electric capacity C2 are connected electrically on the vdd terminal of power supply monitoring chip respectively, and the other end of described electric capacity C1 and the other end of electric capacity C2 are connected electrically in publicly on GND respectively.
As preferably, civil power monitoring means also comprises capacitor C3, capacitor C4, capacitor C5 and resistance R2, one end of described capacitor C3, one end of capacitor C4, one end of capacitor C5 and one end of resistance R2 are connected electrically in the grid G of metal-oxide-semiconductor switch respectively, and the other end of described capacitor C3, the other end of capacitor C4, the other end of capacitor C5 and the other end of resistance R2 are connected electrically in publicly on GND respectively.
As preferably, standby power unit comprises stand-by power supply monitoring port, battery, low pressure difference linear voltage regulator, capacitor C6, capacitor C7, capacitor C8, resistance R3, resistance R4, resistance R5 and diode D1; One end of described capacitor C6 and one end of resistance R3 are connected electrically on stand-by power supply monitoring port respectively; The other end of described resistance R3 and one end of resistance R4 are connected electrically on one end of resistance R5 respectively; The VIN end of described low pressure difference linear voltage regulator, the other end of resistance R4 and one end of capacitor C7 are connected electrically on the positive terminal of battery respectively; The OUT end of described low pressure difference linear voltage regulator and one end of capacitor C8 are connected electrically on the negative pole of diode D1 respectively; The positive pole of described diode D1 is connected electrically in the source S of metal-oxide-semiconductor switch, and the other end of the VSS of the other end of the negative pole end of described battery, the other end of capacitor C6, resistance R5, the other end of capacitor C7, low pressure difference linear voltage regulator end and capacitor C8 is connected electrically in publicly on GND respectively.
The utility model can reach following effect:
The utility model when there being civil power micro-control unit by mains-supplied, when being powered by standby power unit without micro-control unit during civil power, move in circles, all the time allow micro-control unit be in electricity condition always, the real-time of electrical source exchange is efficient in time, reliability is high, can micro-control unit be allowed all the time to be in electricity condition always, thus allows micro-control unit can have electricity to process the data message needing process in time.
Accompanying drawing explanation
Fig. 1 is a kind of circuit theory syndeton schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described.
Embodiment, a kind of adaptive power supply monitoring commutation circuit, shown in Figure 1, comprise commercial power interface 10, node 12, civil power monitoring means 13, metal-oxide-semiconductor switch 17, No. two nodes 18, micro-control unit 19, standby power unit 20, primary power cource unit 24, diode D2 and GND publicly.Civil power monitoring means comprises step-down transformer 14, rectifier 15, power supply monitoring chip 16, capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, resistance R1 and resistance R2.Standby power unit comprises stand-by power supply monitoring port 21, battery 22, low pressure difference linear voltage regulator 23, capacitor C6, capacitor C7, capacitor C8, resistance R3, resistance R4, resistance R5 and diode D1.
Commercial power interface, the input of step-down transformer and the power input of primary power cource unit are connected electrically on an interface respectively, the output of step-down transformer is connected electrically on the input of rectifier, the output of rectifier, one end of electric capacity C1 and one end of electric capacity C2 are connected electrically on the vdd terminal of power supply monitoring chip respectively, the OUT end of civil power chip monitoring is connected electrically on one end of resistance R1, one end of capacitor C3, one end of capacitor C4, one end of capacitor C5, one end of resistance R2 and the other end of resistance R1 are connected electrically in the grid G of metal-oxide-semiconductor switch respectively, the cathode power supply output of primary power cource unit is connected electrically on the negative pole of diode D2, the drain D of metal-oxide-semiconductor switch, the positive pole of diode D2 and the cathode power supply input e1 of micro-control unit are connected electrically on No. two nodes respectively,
One end of capacitor C6 and one end of resistance R3 are connected electrically on stand-by power supply monitoring port respectively, the other end of resistance R3 and one end of resistance R4 are connected electrically on one end of resistance R5 respectively, the VIN end of low pressure difference linear voltage regulator, the other end of resistance R4 and one end of capacitor C7 are connected electrically on the positive terminal of battery respectively, the OUT end of low pressure difference linear voltage regulator and one end of capacitor C8 are connected electrically on the negative pole of diode D1 respectively, the positive pole of diode D1 is connected electrically in the source S of metal-oxide-semiconductor switch, the earth terminal of primary power cource unit, the NC end of power supply monitoring chip, the VSS end of power supply monitoring chip, the DS end of power supply monitoring chip, the other end of electric capacity C1, the other end of electric capacity C2, the other end of capacitor C3, the other end of capacitor C4, the other end of capacitor C5, the other end of resistance R2, the negative pole end of battery, the other end of capacitor C6, the other end of resistance R5, the other end of capacitor C7, the VSS end of low pressure difference linear voltage regulator, the other end of capacitor C8 and the earth terminal of micro-control unit are connected electrically in publicly on GND respectively.
The OUT of power supply monitoring chip holds outer high level signal output.
Be applicable to a use control method for a kind of adaptive power supply monitoring commutation circuit, use control method as follows:
Commercial power interface is connected on civil power;
When the non-power down of civil power, the civil power flowing into a Nodes is divided into two-way city electrical transmission, one road civil power successively after primary power cource unit, diode D2 and No. two node for micro-control unit is powered, another road civil power is monitored by civil power monitoring means real-time continuous, when civil power monitoring means carries out real-time continuous monitoring to civil power, the high level output end of civil power monitoring means can export high level signal to the grid G of metal-oxide-semiconductor switch simultaneously; Grid G due to metal-oxide-semiconductor switch has the circuit between the drain D of the source S of metal-oxide-semiconductor switch and metal-oxide-semiconductor switch to be in off-state when being high level signal, now only have civil power to be that micro-control unit is powered, and standby power unit is not powered to micro-control unit;
When civil power power down, civil power monitoring means can monitor without civil power input, and micro-control unit also inputs without civil power simultaneously; When civil power monitoring means inputs without civil power, the high level output end of civil power monitoring means also exports without high level signal, and now the grid G of metal-oxide-semiconductor switch just can not receive high level signal, and namely now the level signal of the grid G of metal-oxide-semiconductor switch is low level signal; Grid G due to metal-oxide-semiconductor switch has the circuit between the drain D of the source S of metal-oxide-semiconductor switch and metal-oxide-semiconductor switch to be in conducting state when being low level signal, and now civil power is not powered to micro-control unit, and only has standby power unit to be that micro-control unit is powered;
When civil power is sent a telegram here again after power down, civil power monitoring means has monitored again civil power input immediately, the high level output end of civil power monitoring means has again high level signal to export, now the grid G of metal-oxide-semiconductor switch receives again the high level signal that civil power monitoring means transmits, thus makes to be in off-state again between the drain D of the source S of metal-oxide-semiconductor switch and metal-oxide-semiconductor switch;
When being in off-state between the source S and the drain D of metal-oxide-semiconductor switch of metal-oxide-semiconductor switch, micro-control unit is again by mains-supplied;
When there being civil power, micro-control unit is by mains-supplied, when being powered by standby power unit without micro-control unit during civil power, move in circles, allow micro-control unit be in electricity condition all the time always, thus allow micro-control unit can have electricity to process the data message needing process in time.
The real-time of this example electrical source exchange is efficient in time, and reliability is high, can micro-control unit be allowed all the time to be in electricity condition always, thus allows micro-control unit can have electricity to process the data message needing process in time.
Describe execution mode of the present utility model by reference to the accompanying drawings above, but do not limit by above-described embodiment when realizing, those of ordinary skill in the art can make a variety of changes within the scope of the appended claims or revise.
Claims (5)
1. an adaptive power supply monitoring commutation circuit, it is characterized in that, comprise commercial power interface (10), node (12), civil power monitoring means (13), metal-oxide-semiconductor switch (17), No. two nodes (18), micro-control unit (19), standby power unit (20), primary power cource unit (24), diode D2 and GND publicly, described commercial power interface, the power input of civil power monitoring means and the power input of primary power cource unit are connected electrically on an interface respectively, the high level output end of described civil power monitoring means is connected electrically in the grid G of metal-oxide-semiconductor switch, the cathode voltage output of described standby power unit is connected electrically in the source S of metal-oxide-semiconductor switch, the cathode power supply output of described primary power cource unit is connected electrically on the negative pole of diode D2, the drain D of described metal-oxide-semiconductor switch, the positive pole of diode D2 and the cathode power supply input (e1) of micro-control unit are connected electrically on No. two nodes respectively, the earth terminal of described civil power monitoring means, the earth terminal of primary power cource unit, the earth terminal of standby power unit and the earth terminal of micro-control unit are electrically connected with GND publicly respectively.
2. a kind of adaptive power supply monitoring commutation circuit according to claim 1, it is characterized in that, civil power monitoring means comprises step-down transformer (14), rectifier (15), power supply monitoring chip (16) and resistance R1, the input of described step-down transformer is connected electrically on a node, the output of described step-down transformer is connected electrically on the input of rectifier, the output of described rectifier is connected electrically on the vdd terminal of power supply monitoring chip, the OUT end of described power supply monitoring chip is connected electrically on one end of resistance R1, the other end of described resistance R1 is connected electrically in the grid G of metal-oxide-semiconductor switch, the NC end of described power supply monitoring chip, the VSS end of power supply monitoring chip and the DS of power supply monitoring chip hold and are connected electrically in respectively publicly on GND.
3. a kind of adaptive power supply monitoring commutation circuit according to claim 2, it is characterized in that, civil power monitoring means also comprises capacitor C1 and capacitor C2, one end of described electric capacity C1 and one end of electric capacity C2 are connected electrically on the vdd terminal of power supply monitoring chip respectively, and the other end of described electric capacity C1 and the other end of electric capacity C2 are connected electrically in publicly on GND respectively.
4. a kind of adaptive power supply monitoring commutation circuit according to claim 2, it is characterized in that, civil power monitoring means also comprises capacitor C3, capacitor C4, capacitor C5 and resistance R2, one end of described capacitor C3, one end of capacitor C4, one end of capacitor C5 and one end of resistance R2 are connected electrically in the grid G of metal-oxide-semiconductor switch respectively, and the other end of described capacitor C3, the other end of capacitor C4, the other end of capacitor C5 and the other end of resistance R2 are connected electrically in publicly on GND respectively.
5. a kind of adaptive power supply monitoring commutation circuit according to claim 1, it is characterized in that, standby power unit comprises stand-by power supply monitoring port (21), battery (22), low pressure difference linear voltage regulator (23), capacitor C6, capacitor C7, capacitor C8, resistance R3, resistance R4, resistance R5 and diode D1; One end of described capacitor C6 and one end of resistance R3 are connected electrically on stand-by power supply monitoring port respectively; The other end of described resistance R3 and one end of resistance R4 are connected electrically on one end of resistance R5 respectively; The VIN end of described low pressure difference linear voltage regulator, the other end of resistance R4 and one end of capacitor C7 are connected electrically on the positive terminal of battery respectively; The OUT end of described low pressure difference linear voltage regulator and one end of capacitor C8 are connected electrically on the negative pole of diode D1 respectively; The positive pole of described diode D1 is connected electrically in the source S of metal-oxide-semiconductor switch, and the other end of the VSS of the other end of the negative pole end of described battery, the other end of capacitor C6, resistance R5, the other end of capacitor C7, low pressure difference linear voltage regulator end and capacitor C8 is connected electrically in publicly on GND respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520995995.XU CN205212534U (en) | 2015-12-03 | 2015-12-03 | Self -adaptation power monitoring switching circuit |
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| CN201520995995.XU CN205212534U (en) | 2015-12-03 | 2015-12-03 | Self -adaptation power monitoring switching circuit |
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| CN205212534U true CN205212534U (en) | 2016-05-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111525542A (en) * | 2020-03-26 | 2020-08-11 | 江阴长仪集团有限公司 | Power supply method for safely storing data of intelligent electric energy meter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111525542A (en) * | 2020-03-26 | 2020-08-11 | 江阴长仪集团有限公司 | Power supply method for safely storing data of intelligent electric energy meter |
| CN111525542B (en) * | 2020-03-26 | 2021-10-22 | 江阴长仪集团有限公司 | Power supply method for safely storing data of intelligent electric energy meter |
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Address after: 310024, Zhejiang, Hangzhou province Xihu District Zhuan Tong Street, Zhuan Tong Science and Technology Economic Zone No. 11 Patentee after: Hangzhou Xili intelligent Polytron Technologies Inc Address before: 310014 Zhejiang, Xihu District Tong Tong Street turn to science and technology economic block block No. 11 Patentee before: HANGZHOU XILI WATT-HOUR METER MANUFACTURE CO., LTD. |