CN207742236U - Power failure alarm device, ammeter and system based on wireless telecommunications - Google Patents
Power failure alarm device, ammeter and system based on wireless telecommunications Download PDFInfo
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- CN207742236U CN207742236U CN201721782796.6U CN201721782796U CN207742236U CN 207742236 U CN207742236 U CN 207742236U CN 201721782796 U CN201721782796 U CN 201721782796U CN 207742236 U CN207742236 U CN 207742236U
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Abstract
The utility model is related to a kind of power failure alarm device, ammeter and system based on wireless telecommunications, are mainly used in electric power network technique field.Intelligent electric meter power failure alarm device, including：Power cut detection circuit, super-capacitor module and communication module, wherein power cut detection circuit, input terminal are separately connected intelligent electric meter power supply and reference voltage, and output end is separately connected super-capacitor module and communication module；Super-capacitor module is connected with communication module, is exported according to power cut detection circuit, and star t-up discharge is powered for communication module；Communication module samples the signal of power cut detection circuit output end, if power cut signal, then generates alarm event and reports.
Description
Technical field
The utility model is related to a kind of power failure alarm device, ammeter and system based on wireless telecommunications, are mainly used in electricity
Network technology field.
Background technology
In current power information acquisition system, when intelligent electric meter has a power failure, power failure alarm event will be generated, due to
Power failure causes the communication module on intelligent electric meter that cannot work, can only be by power failure alarm event information preservation to ammeter, under
It is secondary that power failure alarm event is reported to gateway unit again after the power is turned on, master station is reported to by gateway unit.
Since event is to power on next time just report, the time of reported event is uncertain.It can cause in event in this way
It reports not in time, so that administration of power networks personnel cannot have found that intelligent electric meter has a power failure in time, it also cannot be in time to the intelligence of power failure
It can ammeter maintenance.
Invention content
The purpose of the utility model is to overcome above-mentioned problems, provide a kind of power failure alarm based on wireless telecommunications
Device, ammeter and system, by intelligent electric meter power-off event real-time report.
The purpose of this utility model is completed by following technical solution,
Intelligent electric meter power failure alarm device, including：Power cut detection circuit, super-capacitor module and communication module, wherein
Power cut detection circuit, input terminal are separately connected intelligent electric meter power supply and reference voltage, output end difference
Connect super-capacitor module and communication module；
Super-capacitor module is connected with communication module, is exported according to power cut detection circuit, and star t-up discharge supplies for communication module
Electricity；
Communication module samples the signal of power cut detection circuit output end, if power cut signal, then generates alarm thing
Part reports.
Preferably, the super-capacitor module includes current-limiting circuit, super capacitor equalizer circuit, switching circuit and switching
Circuit, wherein
Current-limiting circuit, input terminal connect intelligent electric meter power supply, and output end connects super capacitor equalizer circuit, are super
Capacitor charging；
Super capacitor equalizer circuit is connected with current-limiting circuit output end, while being connected with switching circuit, is led in switching circuit
It powers for communication module when logical；
Switching circuit, control terminal are connected with switching circuit, remaining both ends respectively with super capacitor equalizer circuit and communication mould
Block is connected；
Switching circuit, input terminal are connected with power cut detection circuit output end, are exported according to power cut detection circuit, control switch
Circuit turn-on or disconnection.
Preferably, the switching circuit includes triode Q4 and triode Q3, wherein triode Q4 base stages connection has a power failure
The output end of detection circuit, the base stage of collector connecting transistor Q3, emitter ground connection；Triode Q3 collectors connect switching circuit control
End processed, emitter ground connection.
Preferably, the switching circuit includes the collector of PMOS tube Q2, a G pole connecting triode Q3, the connection of the poles D
Communication module, the poles S connect super capacitor equalizer circuit.
Preferably, the super capacitor equalizer circuit includes concatenated three super capacitors E1, E2, E3, and respectively
It is parallel to and plays the voltage stabilizing chip U2 of pressure on E1, is parallel to and plays the voltage stabilizing chip U3 of pressure on E2, be parallel on E3
Play the voltage stabilizing chip U4 of pressure.
Preferably, the warning system further includes power-switching circuit, input terminal is separately connected intelligent electric meter power supply
Power supply and switching circuit voltage output end, output end connecting communication module are powered for communication module.
Preferably, the communication module includes MCU, RF radio-frequency module and antenna being sequentially connected, wherein MCU for pair
The signal of power cut detection circuit output end is sampled, and if power cut signal, then generates alarm event, by RF radio-frequency modules and
Antenna is reported.
Preferably, the power cut detection circuit includes a comparator U1, two input terminal is separately connected intelligent electric meter
Power supply and reference voltage, output end are separately connected super-capacitor module and communication module.
Intelligent electric meter, including power failure alarm device above-mentioned.
Intelligent electric meter power failure warning system based on wireless telecommunications, including, master station, gateway, intelligent electric meter, wherein
Gateway, with intelligent electric meter by being wirelessly connected, the alarm event reported for receiving intelligent electric meter；
On the one hand master station receives the power failure alarm event of webmaster acquisition with the gateway by being wirelessly connected, another
Aspect sends to gateway and orders；
The intelligent electric meter includes power failure alarm device above-mentioned.
The utility model has the following advantages compared with prior art and effect：
1, the utility model setting super-capacitor module and power cut detection circuit by super capacitor is communication mould when having a power failure
Block is powered, and after communication module detects power failure by power cut detection circuit, is generated alarm event and is reported, to realize intelligence
Real-time report power failure alarm event after ammeter has a power failure shows the intelligent electric meter power failure feelings in power grid in time for power system monitor personnel
Condition.
Master station monitors single intelligent electric meter power failure alarm event, it can be determined that has house lead in failure, needs to arrange for
Personnel investigate problem.
The intelligent electric meter that master station monitors multiple power failure alarm events comes from a phase line, it can be determined that goes out into transformation
Device end exports phase line failure, needs that maintenance personnel scene is arranged to investigate problem in time.
Master station monitors taiwan area intelligent electric meter and all reports power failure alarm event, it can be determined that goes out into transformer terminal event
Barrier needs urgent referral maintenance personnel scene to investigate problem.
2, using the method reported layer by layer, message obstruction and conflict are reduced, and reduce and send message number.
3, the utility model only carries out upgrading to current power information acquisition system, need not replace intelligent electricity
Table saves installation cost, it is only necessary to which replacing communication part can support real-time power-off event to report, and reduce improvement cost.
Description of the drawings
Fig. 1 is the utility model power failure alarm device block diagram.
Fig. 2 is the circuit diagram of super-capacitor module and power cut detection circuit in the utility model power failure alarm device.
Fig. 3 is the utility model power failure alarm network diagram.
Fig. 4 is the utility model power failure alarm processing figure.
Specific implementation mode
Detailed introduction is done to the utility model below in conjunction with attached drawing.
As shown in Figure 1, the present embodiment intelligent electric meter power failure alarm device, including：Power cut detection circuit 1, super capacitor mould
Block 2 and communication module 3, wherein
Power cut detection circuit 1, input terminal are separately connected intelligent electric meter power supply and reference voltage, output end difference
Super-capacitor module 2 and communication module 3 are connected, the condition as triggering 2 star t-up discharge of super-capacitor module；
Super-capacitor module 2 is connected with communication module 3, is exported according to power cut detection circuit 1, and star t-up discharge is communication mould
Block 3 is powered；
Communication module 3 samples the signal of 1 output end of power cut detection circuit, if power cut signal, then generates alarm
Event reports.
Preferably, the super-capacitor module 2 includes current-limiting circuit 2-1, super capacitor equalizer circuit 2-2, switch electricity
Road 2-3 and switching circuit 2-4, wherein
Current-limiting circuit 2-1, input terminal connect intelligent electric meter power supply, and output end connects super capacitor equalizer circuit 2-2,
It charges for super capacitor；
Super capacitor equalizer circuit 2-2 is connected with current-limiting circuit 2-1 output ends, while being connected with switching circuit 2-3,
It powers for communication module 3 when switching circuit 2-3 conductings；
Switching circuit 2-3, control terminal are connected with switching circuit 2-4, remaining both ends respectively with super capacitor equalizer circuit 2-2
It is connected with communication module 3；
Switching circuit 2-4, input terminal are connected with 1 output end of power cut detection circuit, are exported according to power cut detection circuit 1, control
Switching circuit 2-3 processed is turned on or off.
The switching circuit 2-4 includes triode Q4 and triode Q3, and wherein the connection of triode Q4 base stages, which has a power failure, detects electricity
The output end on road 1, the base stage of collector connecting transistor Q3, emitter ground connection；Triode Q3 collectors connect switching circuit 2-3 controls
End, emitter ground connection.
The switching circuit 2-3 includes the collector of PMOS tube Q2, a G pole connecting triode Q3, the poles D connecting communication mould
Block 3, the poles S connect super capacitor equalizer circuit 2-2.
The super capacitor equalizer circuit 2-2 includes concatenated three super capacitors E1, E2, E3, and is parallel to respectively
Play the voltage stabilizing chip U2 of pressure on E1, be parallel to and play the voltage stabilizing chip U3 of pressure on E2, be parallel to rise on E3 and press
The voltage stabilizing chip U4 of effect.
The warning system further includes power-switching circuit 4, and input terminal is separately connected intelligent electric meter power supply and opens
Powered-down road 2-3 voltage output ends (poles D of Q2), output end connecting communication module 3 are powered for communication module 3.
The communication module 3 includes MCU, RF radio-frequency module and antenna being sequentially connected, and wherein MCU is used to detect to having a power failure
The signal of 1 output end of circuit is sampled, and if power cut signal, then generates alarm event, by RF radio-frequency modules and antenna into
Row reports.
When alternating current does not have a power failure, turn the conversion circuit (AC-DC circuits) of direct current using exchange, direct current is generated, as intelligence
Energy ammeter power supply is that equipment and communication module are powered.
When alternating current does not have a power failure, charge to super capacitor E1, E2, E3, the limit that power supply is made up of R6, Q1, D4, D5
Current circuit carries out constant-current charge, and charging current is excessive when preventing from powering on causes front end supply voltage to fall.In addition, U2/U3/U4 rises
It is acted on to pressure so that each super capacitor is charged to 2.7V or so, and three super capacitors, voltage is maximum after E1/E2/E3 series connection
Up to 2.7V*3=8.1V.
When alternating current does not have a power failure, intelligent electric meter power supply is that wireless communication module 3 provides work through power-switching circuit 4
Power supply, module normal work.At this point, power cut detection circuit 1 is by comparing device U1 acquisition intelligent electric meter power supplies and with reference to electricity
Source voltage is compared, and comparator circuit exports high level, and Q2, Q3, Q4 composition control circuit keep switching circuit 2-3's
PMOS tube Q2 is disconnected, i.e., is powered using intelligent electric meter power supply.The MCU of communication module 3 samples the height electricity of comparator output
It is flat, judge to be at this time non-power failure, without power failure alarming processing.
When mains failure, the Vin rapid drawdowns in power cut detection circuit 1 are low level, and reference voltage is exported by Vout
The electrolytic capacitor at end remains temporary, at this point, power cut detection circuit 1 by comparing device U1 acquisition intelligent electric meter power supply voltages and
Reference voltage is compared, and comparator circuit exports low level, therefore NOPOWER is in Q2, Q3, Q4 composition control circuit
0, triode Q4, Q3 conducting, triggering PMOS tube Q2 conductings, then being achieved that VBAT powers to POWLM, to open super electricity
Hold the access of power supply, that is, uses super capacitor to power for wireless communication module.Meanwhile MCU samples the low electricity of comparator output
It is flat, judge to be at this time power failure, carries out power failure alarming processing.
As shown in figure 3, a kind of power failure warning system based on wireless telecommunications, including master station, gateway, multiple intelligence electricity
Table (including aforementioned power failure alarm device), is connected between the gateway and intelligent electric meter by wireless telecommunications, gateway is for receiving
The data and alarm event that intelligent electric meter reports；Pass through GPRS/3G/4G wireless telecommunications between the gateway and the master station
Connection, for the data of different acquisition point to be sent to master station, (the power failure alarm event received is reported to by gateway again
Master station) and receive master station order data.
Intelligent electric meter power failure alarm method based on wireless telecommunications, including：
A, after intelligent electric meter has a power failure, super-capacitor module (2) is powered to the communication module (3) of the power failure intelligent electric meter, together
When communication module (3) detect power failure after, generate alarm event and be stored in buffer area, and random time T2 is set；
B, after random time T2 timing, by alarm event report gateway.
Preferably, the power down intelligent electric meter setting retransmission time T1；If described before retransmission time T1 timing terminates
Power down intelligent electric meter receives the acknowledgement frame of gateway transmission, then cleared alarm event, otherwise after retransmission time T1 timing, weight
New report and alarm event.
Intelligent electric meter power failure alarm method based on wireless telecommunications, including：
A, after intelligent electric meter has a power failure, super-capacitor module 2 is powered to the communication module 3 of the power failure intelligent electric meter, is led to simultaneously
After news module 3 detects power failure, generates alarm event and be stored in buffer area；Or intelligent electric meter receives its alarm thing from node
After part, it is deposited into buffer area；Interval time T3 is set；
B, in the interval time T3 periods, the alarm event of other child nodes is received, then to the reclocking of interval time T3；
Otherwise, the alarm event of its buffer area is reported into its father node；
C, the interval time T3 is recorded while father node receives alarm event, is executed step B, is reported step by step, until
The alarm event reports to gateway.
Preferably, being completed after once reporting from node, its father node is not reported or is reported in retransmission time T1
The alarm event of oneself is not included in information, then report and alarm event；Otherwise, cleared alarm event.
Preferably, the step B is：In period interval time T3, the alarm event of other child nodes is not received, or
Person's retransmission time T1 timing terminates, and the alarm event of its buffer area is reported its father node；In period interval time T3, receive
The alarm event of other child nodes, then to the reclocking of interval time T3.
Embodiment 1：As shown in Figure 3, Figure 4, the intelligent electric meter of 1 grade of routing node, which has a power failure, alerts.Such as intelligent electric meter C falls
Electricity, super-capacitor module 2 are powered to the communication module 3 of the power down intelligent electric meter, and the MCU of communication module 3 samples power failure detection
The low level that circuit 1 exports judges to be power failure at this time, generates alarm event and be stored in buffer area, and random time is arranged
T2 (avoids multiple nodes while alerting)；Alarm event is reported into gateway unit after random time T2 timing, and is set
Retransmission time T1 timing is set, gateway unit gives intelligent electric meter C transmission acknowledgement frames after receiving alarm event.Intelligent electric meter C is received really
After recognizing frame, otherwise cleared alarm event retransmits the alarm event after T1 timing.
Embodiment 2：As shown in Figure 3, Figure 4, it is more than the intelligent electric meter power failure alarm of 1 grade of routing node.Such as intelligent electric meter
A1 power down, super-capacitor module 2 are powered to the communication module 3 of the power down intelligent electric meter, and the MCU of communication module 3 samples power failure
The low level that detection circuit 1 exports judges to be power failure at this time, generates alarm event and is stored in buffer area, and is arranged random
Time T2；Outage information is reported to father node intelligent electric meter A after random time T2 timing, and retransmission time T1 is set
Timing.Intelligent electric meter A stores the alarm event received to buffer area, records retransmission time T1 and interval time T3 is arranged.
When intelligent electric meter A receives the alarm event of other child nodes then to the reclocking of interval time T3.When intelligent electric meter A T3 or
T1 timing is arrived, by the alarm event of buffer area be reported to gateway unit (alarm event from node is not received in the T3 periods,
Intelligent electric meter A is reported to gateway unit at the end of T3 timing, by the alarm event of buffer area；Or intelligent electric meter A is received
Slave node alarm event it is excessive, it is more than T1 to cause interval time T3 to play the total time that timing terminates when the setting, then intelligence
The alarm event of buffer area is reported to gateway unit by energy ammeter A at the end of T1 timing, repeats to report to avoid from node)
And retransmission time T1 is set, cleared alarm event after gateway acknowledgement frame is received, is otherwise then sent again to gateway in T1 timing
Alarm event.When the alarm event that the alarm event that intelligent electric meter A1 receptions intelligent electric meter A is reported includes this ammeter, then announcement is removed
Alert event, otherwise the report and alarm event again after T1 timing.
Embodiment 3：As shown in Figure 3, Figure 4, large-area power-cuts, for example, intelligent electric meter B, intelligent electric meter B1, intelligent electric meter B2,
Intelligent electric meter B3, intelligent electric meter B11, intelligent electric meter B21, intelligent electric meter B22, intelligent electric meter B223 power down.For relay node
Intelligent electric meter B2, super-capacitor module 2 are powered to the communication module 3 of intelligent electric meter B2, and the MCU of communication module 3, which is sampled, to stop
The low level that power detection circuit 1 exports judges to be power failure at this time, generates alarm event and deposit the alarm event of oneself
To alarm buffer area, and retransmission time T1 and interval time T3 are set；Receive intelligent electric meter B21, intelligent electric meter B22, intelligence electricity
The alarm event of table B23, storage is to buffer area and resets interval time T3 or to the reclocking of interval time T3.Work as intelligence
T1 the T3 times of ammeter B2 arrive, and the alarm event of buffer area are all reported to father node intelligent electric meter B, and reset
T1.Information is reported to include the announcement of oneself when intelligent electric meter B21, intelligent electric meter B22, intelligent electric meter B23 receive intelligent electric meter B2
Alert, then cleared alarm event, otherwise retransmits alarm event after T1 timing.And so on intelligent electric meter B according to aforementioned side
The alarm event that method collects its child node is uniformly reported to gateway.
From node after reporting once, reporting for father node can be all monitored within the T1 times：Father node does not have within the T1 times
It includes oneself to have the information for reporting or reporting not, then needs to retransmit alarm event from node.
Claims (10)
1. a kind of intelligent electric meter power failure alarm device, it is characterised in that including：Power cut detection circuit (1), super-capacitor module (2)
With communication module (3), wherein
Power cut detection circuit (1), input terminal are separately connected intelligent electric meter power supply and reference voltage, and output end connects respectively
Connect super-capacitor module (2) and communication module (3)；
Super-capacitor module (2) is connected with communication module (3), is exported according to power cut detection circuit (1), and star t-up discharge is communication
Module (3) is powered；
Communication module (3) samples the signal of power cut detection circuit (1) output end, if power cut signal, then generates alarm
Event reports.
2. intelligent electric meter power failure alarm device according to claim 1, it is characterised in that：The super-capacitor module (2)
Including current-limiting circuit (2-1), super capacitor equalizer circuit (2-2), switching circuit (2-3) and switching circuit (2-4), wherein
Current-limiting circuit (2-1), input terminal connect intelligent electric meter power supply, and output end connects super capacitor equalizer circuit (2-2),
It charges for super capacitor；
Super capacitor equalizer circuit (2-2) is connected with current-limiting circuit (2-1) output end, while being connected with switching circuit (2-3),
It powers for communication module (3) when switching circuit (2-3) is connected；
Switching circuit (2-3), control terminal are connected with switching circuit (2-4), remaining both ends respectively with super capacitor equalizer circuit (2-
2) it is connected with communication module (3)；
Switching circuit (2-4), input terminal are connected with power cut detection circuit (1) output end, are exported according to power cut detection circuit (1),
Control switching circuit (2-3) is turned on or off.
3. intelligent electric meter power failure alarm device according to claim 2, it is characterised in that：Switching circuit (2-4) packet
Triode Q4 and triode Q3 are included, the wherein output end of triode Q4 base stages connection power cut detection circuit (1), collector connects three poles
The base stage of pipe Q3, emitter ground connection；Triode Q3 collectors connect switching circuit (2-3) control terminal, emitter ground connection.
4. intelligent electric meter power failure alarm device according to claim 2, it is characterised in that：Switching circuit (2-3) packet
The collector of PMOS tube Q2, a G pole connecting triode Q3, the poles D connecting communication module (3) are included, the poles S connection super capacitor is pressed
Circuit (2-2).
5. intelligent electric meter power failure alarm device according to claim 2, it is characterised in that：The super capacitor equalizer circuit
(2-2) includes concatenated three super capacitors E1, E2, E3, and be parallel to respectively serve on E1 pressure voltage stabilizing chip U2,
It is parallel to and plays the voltage stabilizing chip U3 of pressure on E2, is parallel to the voltage stabilizing chip U4 for playing pressure on E3.
6. intelligent electric meter power failure alarm device according to claim 2, it is characterised in that：The warning system further includes electricity
Power-switching circuit (4), input terminal is separately connected intelligent electric meter power supply and switching circuit (2-3) voltage output end, defeated
Outlet connecting communication module (3) is powered for communication module (3).
7. intelligent electric meter power failure alarm device according to claim 1, it is characterised in that：The communication module (3) includes
MCU, RF radio-frequency module and antenna being sequentially connected, wherein MCU is for adopting the signal of power cut detection circuit (1) output end
Sample then generates alarm event if power cut signal, is reported by RF radio-frequency modules and antenna.
8. intelligent electric meter power failure alarm device according to claim 1, it is characterised in that：The power cut detection circuit (1)
Including a comparator U1, two input terminal is separately connected intelligent electric meter power supply and reference voltage, output end difference
Connect super-capacitor module (2) and communication module (3).
9. a kind of intelligent electric meter, it is characterised in that：Including the power failure alarm device described in claim 1-8 any one.
10. a kind of intelligent electric meter power failure warning system based on wireless telecommunications, including, master station, gateway, intelligent electric meter,
In,
Gateway, with intelligent electric meter by being wirelessly connected, the alarm event reported for receiving intelligent electric meter；
On the one hand master station receives the power failure alarm event of webmaster acquisition, on the other hand with the gateway by being wirelessly connected
It sends and orders to gateway；
It is characterized in that：The intelligent electric meter includes the power failure alarm device described in claim 1-8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721782796.6U CN207742236U (en) | 2017-12-19 | 2017-12-19 | Power failure alarm device, ammeter and system based on wireless telecommunications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721782796.6U CN207742236U (en) | 2017-12-19 | 2017-12-19 | Power failure alarm device, ammeter and system based on wireless telecommunications |
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| Publication Number | Publication Date |
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| CN207742236U true CN207742236U (en) | 2018-08-17 |
Family
ID=63118757
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| CN201721782796.6U Active CN207742236U (en) | 2017-12-19 | 2017-12-19 | Power failure alarm device, ammeter and system based on wireless telecommunications |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593991A (en) * | 2017-12-19 | 2018-09-28 | 杭州海兴电力科技股份有限公司 | Power failure alarm device, system and method based on wireless telecommunications |
| CN109151945A (en) * | 2018-08-30 | 2019-01-04 | 杭州海兴电力科技股份有限公司 | Power failure alarm method and system based on radio frequency network |
| CN110161450A (en) * | 2019-06-20 | 2019-08-23 | 宁波三星医疗电气股份有限公司 | A kind of power-fail detection circuit, communication module and ammeter |
| CN113972733A (en) * | 2021-09-16 | 2022-01-25 | 国网浙江嵊州市供电有限公司 | Power acquisition terminal, power failure monitoring system and power failure monitoring method |
-
2017
- 2017-12-19 CN CN201721782796.6U patent/CN207742236U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108593991A (en) * | 2017-12-19 | 2018-09-28 | 杭州海兴电力科技股份有限公司 | Power failure alarm device, system and method based on wireless telecommunications |
| CN109151945A (en) * | 2018-08-30 | 2019-01-04 | 杭州海兴电力科技股份有限公司 | Power failure alarm method and system based on radio frequency network |
| CN109151945B (en) * | 2018-08-30 | 2020-10-16 | 杭州海兴电力科技股份有限公司 | Power failure warning method and system based on radio frequency network |
| CN110161450A (en) * | 2019-06-20 | 2019-08-23 | 宁波三星医疗电气股份有限公司 | A kind of power-fail detection circuit, communication module and ammeter |
| CN113972733A (en) * | 2021-09-16 | 2022-01-25 | 国网浙江嵊州市供电有限公司 | Power acquisition terminal, power failure monitoring system and power failure monitoring method |
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