CN110244172A - A kind of zero firewire detection system of family table inlet wire and method - Google Patents

A kind of zero firewire detection system of family table inlet wire and method Download PDF

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Publication number
CN110244172A
CN110244172A CN201811623239.9A CN201811623239A CN110244172A CN 110244172 A CN110244172 A CN 110244172A CN 201811623239 A CN201811623239 A CN 201811623239A CN 110244172 A CN110244172 A CN 110244172A
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CN
China
Prior art keywords
detection
circuit
zero
power
resistance
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Pending
Application number
CN201811623239.9A
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Chinese (zh)
Inventor
蔡明海
郑松松
李娇
尹小明
黄慧军
王震宇
蔡卫国
刘丽
朱琪
陈力
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Changxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Changxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by State Grid Corp of China SGCC, Huzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd, Changxing Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201811623239.9A priority Critical patent/CN110244172A/en
Publication of CN110244172A publication Critical patent/CN110244172A/en
Pending legal-status Critical Current

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    • G01R31/041

Abstract

The present invention relates to a kind of zero firewire detection systems of family table inlet wire, including concentrator and detection device, the concentrator is set on distribution network bus, the detection device is set in the table of family, the detection device includes power circuit, power-fail detection circuit, RF circuit, microcontroller and carrier circuit, the power circuit is power-fail detection circuit, RF circuit, microcontroller and carrier circuit power supply, microcontroller respectively with RF circuit, carrier circuit is connected with power-fail detection circuit, it include zero cross detection circuit in the carrier circuit, zero cross detection circuit is connected with power-fail detection circuit, the detection device is communicated by carrier circuit and RF circuit with concentrator.The detection method of the system includes zero firewire reversal connection detection method and power failure detection method, the invention has the advantages that circuit overall structure is simple, it is at low cost;It is communicated using carrier wave and wireless double mode, the communication blind district for avoiding two kinds of communication modes from being individually present originally, makes system higher rate, more stable.

Description

A kind of zero firewire detection system of family table inlet wire and method
Technical field
The present invention relates to power distribution network detection more particularly to a kind of zero firewire detection systems of family table inlet wire and method.
Background technique
In low-voltage customer, control switch is mainly used for controlling firewire.If ammeter inlet wire firewire and zero curve are reversely connected, will cause The control switch of electrical equipment controls zero curve, though control switch in a disconnected situation, still charge, bring inside electric appliance Very big security risk.This problem will not influence user's normal electricity consumption, i.e. user and relevant departments is not easy to find the problem, if but When the operation that user's progress such as more changes the bulb, the maintenance of home electrical route needs to carry out under power blackout situation, it is most likely that meeting The personal safety of user or related personnel are damaged.
Summary of the invention
Present invention mainly solves the above problem provide it is a kind of using simple zero fire of family table inlet wire of dual mode communication, structure Line detection system and method.
The technical solution adopted by the present invention to solve the technical problems is: a kind of zero firewire detection system of family table inlet wire, packet Concentrator and detection device are included, the concentrator is set on distribution network bus, and the detection device is set in the table of family, the detection Device includes power circuit, power-fail detection circuit, RF circuit, microcontroller and carrier circuit, and the power circuit is power down inspection Slowdown monitoring circuit, RF circuit, microcontroller and carrier circuit power supply, microcontroller respectively with RF circuit, carrier circuit and detection of power loss Circuit is connected, and includes zero cross detection circuit in the carrier circuit, zero cross detection circuit is connected with power-fail detection circuit, described Detection device is communicated by carrier circuit and RF circuit with concentrator.
Concentrator sends identification signal when power frequency zero cross signal reaches, and identification signal passes through electric power after concentrator is modulated Line is transferred to carrier circuit, and carrier circuit, which receives, to be known demodulation identification signal and the identification signal after demodulation is transferred to microcontroller Device;Zero cross detection circuit detects the zero cross signal of family table point of incoming cables and zero cross signal is transferred to microcontroller in carrier circuit, Microcontroller judges whether table inlet wire zero firewire in family is reversely connected by comparing identification signal and zero cross signal;Zero cross detection circuit is also Power-fail detection circuit provides detection signal, and whether power-fail detection circuit is had a power failure using detection signal detection, RF circuit and load Wave circuit provides wireless communication and carrier communication channel respectively, and wireless communication and carrier communication channel can make to concentrate Device, reversal connection identification device are in communication with each other.
Scheme as a preference of the above scheme, the zero cross detection circuit include resistance R113, R114, R115, R116, R117, capacitor C118, C119, C120, C104, C122, diode D104, D107, voltage-stabiliser tube D105, optocoupler U101 and Triode Q100, the resistance R113 first end are connected with family table inlet wire firewire L, resistance R113 second end and resistance R114 first End be connected, resistance R114 second end is connected with diode D104 anode, diode D104 cathode respectively with capacitor C118 first end, Resistance R115 first end, resistance C120 first end, voltage-stabiliser tube D105 cathode are connected with the light-emitting diodes tube anode of optocoupler U101, electricity Hold C118 second end, resistance R115 second end, capacitor C120 second end and voltage-stabiliser tube D105 anode to be connected with zero curve N, optocoupler The light-emitting diodes tube cathode of U101 is connected with triode Q100 collector, triode Q100 base stage respectively with capacitor C119 first End be connected with resistance R116 first end, resistance R116 second end is connected with zero curve N, capacitor C119 second end respectively with triode Q100 emitter is connected with diode D107 anode, and diode D107 cathode is connected with zero curve N, the phototriode of optocoupler U101 Collector is connected with capacitor C104 first end and+5V voltage respectively, and capacitor C104 second end is grounded GND, and optocoupler U101's is photosensitive Transistor emitter is connected with resistance R117 first end, capacitor C122 first end and microcontroller input respectively, resistance R117 Second end and capacitor C122 second end are grounded GND.
Scheme as a preference of the above scheme, the power-fail detection circuit include resistance Re, capacitor Ce and monostable The A pin of state trigger U1, the monostable flipflop U1 are grounded, the B pin of monostable flipflop U1 and the light of optocoupler U101 Quick transistor emitter is connected, and the CLR pin of monostable flipflop U1 meets+5V voltage and resistance Re first end, resistance Re respectively Second end connects capacitor Ce first end respectively and is connected with the RCext pin of monostable flipflop U1, capacitor Ce second end and monostable The Cext pin of trigger U1 is connected, and the Q pin of monostable flipflop U1 is connected with microcontroller.Monostable trigger in the circuit Device can export high level when signal jumps, and the high level exported after certain delay becomes low level, in delay again When receiving signal jump, the delay time of high level, i.e., under the influence of continuous pulse signal, monostable trigger can be reset Device can continue output high level, and when route is powered, power-fail detection circuit receives the lasting pulse that zero cross detection circuit issues Signal, power-fail detection circuit persistently export high level, otherwise when route power-off, power-fail detection circuit exports low level.
The present invention also provides a kind of zero firewire detection methods of family table inlet wire, using above-mentioned zero firewire detection system of family table inlet wire System, including detection method and power failure detection method are reversely connected including zero firewire, the zero firewire reversal connection detection method includes following step It is rapid:
S1: concentrator detects bus power frequency zero cross signal, and identification signal is sent when power frequency zero cross signal reaches, and identification signal is logical It crosses carrier communication and passes to detection device;
S2: carrier circuit receives identification signal and detects local zero firewire zero passage letter by zero cross detection circuit in detection device Number;
S3: identification signal and local zero firewire zero cross signal are transferred to microcontroller by carrier circuit;
S4: microcontroller compares the time difference of 1 firewire zero cross signal generation time point of identification signal receiving point and family table inlet wire, Zero firewire is just connecing if the two is coincide;Zero firewire is reversely connected if the two differs 10ms.
As a preferred embodiment, the power failure detection method, comprising the following steps:
S11: zero cross detection circuit generates waveform according to local zero firewire alternating current and is transferred to power-fail detection circuit;
S12: power-fail detection circuit based on the received waveform outputs level signals to microcontroller;
S13: microcontroller detects level signal, if high level then without power down;Power down then occurs if low level.
The invention has the advantages that circuit overall structure is simple, it is at low cost;It is communicated using carrier wave and wireless double mode, avoids two The communication blind district that kind of communication mode is individually present originally makes system higher rate, more stable.
Detailed description of the invention
Fig. 1 is a kind of connection block diagram of the invention.
Fig. 2 is a kind of circuit connection schematic diagram of zero cross detection circuit in the present invention.
Fig. 3 is a kind of circuit connection schematic diagram of power-fail detection circuit in the present invention.
Fig. 4 is a kind of flow diagram of zero firewire reversal connection detection method.
Fig. 5 is a kind of flow diagram of power failure detection method.
1- concentrator 2- carrier circuit 3- microcontroller 6- power circuit 7-RF circuit.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing further description of the technical solution of the present invention.
Embodiment:
A kind of zero firewire detection system of family table inlet wire of the present embodiment, as shown in Figure 1, including concentrator 1 and detection device, the collection Middle device is set on distribution network bus, and the detection device is set in the table of family, and the detection device includes power circuit 6, power down inspection Slowdown monitoring circuit 4, RF circuit 7, microcontroller 3 and carrier circuit 2, the power circuit are power-fail detection circuit, RF circuit, microcontroller Device and carrier circuit power supply, microcontroller are connected with RF circuit, carrier circuit and power-fail detection circuit respectively, the carrier circuit In include zero cross detection circuit, zero cross detection circuit is connected with power-fail detection circuit, and the detection device passes through carrier circuit It is communicated with RF circuit with concentrator.
As shown in Fig. 2, the zero cross detection circuit includes resistance R113, R114, R115, R116, R117, capacitor C118, C119, C120, C104, C122, diode D104, D107, voltage-stabiliser tube D105, optocoupler U101 and triode Q100, it is described Resistance R113 first end is connected with family table inlet wire firewire L, and resistance R113 second end is connected with resistance R114 first end, resistance R114 Second end is connected with diode D104 anode, diode D104 cathode respectively with capacitor C118 first end, resistance R115 first end, Resistance C120 first end, voltage-stabiliser tube D105 cathode are connected with the light-emitting diodes tube anode of optocoupler U101, capacitor C118 second end, electricity Resistance R115 second end, capacitor C120 second end and voltage-stabiliser tube D105 anode are connected with zero curve N, the light emitting diode of optocoupler U101 Cathode is connected with triode Q100 collector, triode Q100 base stage respectively with capacitor C119 first end and resistance R116 first End be connected, resistance R116 second end is connected with zero curve N, capacitor C119 second end respectively with triode Q100 emitter and diode D107 anode be connected, diode D107 cathode is connected with zero curve N, the phototriode collector of optocoupler U101 respectively with capacitor C104 first end is connected with+5V voltage, and capacitor C104 second end is grounded GND, the phototriode emitter difference of optocoupler U101 It is connected with resistance R117 first end, capacitor C122 first end and microcontroller input, resistance R117 second end and capacitor C122 Second end is grounded GND.
As shown in figure 3, the power-fail detection circuit includes resistance Re, capacitor Ce and monostable flipflop U1, the list The A pin of steady state trigger U1 is grounded, the phototriode emitter phase of the B pin and optocoupler U101 of monostable flipflop U1 Even, the CLR pin of monostable flipflop U1 connects+5V voltage and resistance Re first end respectively, and resistance Re second end connects capacitor respectively Ce first end is connected with the RCext pin of monostable flipflop U1, and the Cext of capacitor Ce second end and monostable flipflop U1 are managed Foot is connected, and the Q pin of monostable flipflop U1 is connected with microcontroller.
Corresponding, the present embodiment also provides a kind of zero firewire detection method of family table inlet wire, including is reversely connected including zero firewire and examines Survey method and power failure detection method, zero firewire are reversely connected detection method, as shown in Figure 4, comprising the following steps:
S1: concentrator detects bus power frequency zero cross signal, and identification signal is sent when power frequency zero cross signal reaches, and identification signal is logical It crosses carrier communication and passes to detection device;
S2: carrier circuit receives identification signal and detects local zero firewire zero passage letter by zero cross detection circuit in detection device Number;
S3: identification signal and local zero firewire zero cross signal are transferred to microcontroller by carrier circuit;
S4: microcontroller compares the time difference of 1 firewire zero cross signal generation time point of identification signal receiving point and family table inlet wire, Zero firewire is just connecing if the two is coincide;Zero firewire is reversely connected if the two differs 10ms.
As shown in figure 5, the power failure detection method, comprising the following steps:
S11: zero cross detection circuit generates waveform according to local zero firewire alternating current and is transferred to power-fail detection circuit;
S12: power-fail detection circuit based on the received waveform outputs level signals to microcontroller;
S13: microcontroller detects level signal, if high level then without power down;Power down then occurs if low level.
In the present embodiment, concentrator detects bus zero cross signal and sends identification signal when power frequency zero cross signal reaches, and knows Level signal passes through power line transmission to carrier circuit after concentrator is modulated, and carrier circuit receives knowledge demodulation identification signal and will simultaneously solve Identification signal after tune is transferred to microcontroller;Zero cross detection circuit detects the zero cross signal of family table point of incoming cables and by zero cross signal It is transferred to microcontroller, microcontroller judges whether table inlet wire zero firewire in family is reversely connected by comparing identification signal and zero cross signal, If identification signal receiving point and zero cross signal zero crossing identical if connect it is normal, if the two difference zero firewire of 10ms reversal connection.It carries Wave circuit provides zero cross signal for power-fail detection circuit, and power-fail detection circuit is defeated to microcontroller when receiving zero cross signal High level out, expression do not power off, when power is off, do not have alternating current in route, and power-fail detection circuit does not receive pulse signal, Power-fail detection circuit exports low level to microcontroller.RF circuit and carrier circuit provide wireless communication respectively and carrier wave is logical Believe channel, wireless communication and carrier communication channel can be such that concentrator, reversal connection identification device is in communication with each other.When user is equipped with It, can be to be reversely connected identification device acquisition in higher level's ammeter after the zero firewire wiring state confirmation of higher level's ammeter when multistage ammeter Zero passage detection signal on the basis of detect zero firewire wiring state of junior's ammeter.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.

Claims (5)

1. a kind of zero firewire detection system of family table inlet wire, it is characterized in that: including concentrator (1) and detection device, the concentrator On distribution network bus, the detection device is set in the table of family, and the detection device includes power circuit (6), detection of power loss Circuit (4), RF circuit (7), microcontroller (3) and carrier circuit (2), the power circuit be power-fail detection circuit, RF circuit, Microcontroller and carrier circuit power supply, microcontroller are connected with RF circuit, carrier circuit and power-fail detection circuit respectively, the load It include zero cross detection circuit in wave circuit, zero cross detection circuit is connected with power-fail detection circuit, and the detection device passes through load Wave circuit and RF circuit are communicated with concentrator.
2. a kind of zero firewire detection system of family table inlet wire according to claim 1, it is characterized in that: the zero passage detection electricity Road include resistance R113, R114, R115, R116, R117, capacitor C118, C119, C120, C104, C122, diode D104, D107, voltage-stabiliser tube D105, optocoupler U101 and triode Q100, the resistance R113 first end are connected with family table inlet wire firewire L, electricity Resistance R113 second end is connected with resistance R114 first end, and resistance R114 second end is connected with diode D104 anode, diode D104 cathode respectively with capacitor C118 first end, resistance R115 first end, resistance C120 first end, voltage-stabiliser tube D105 cathode and light The light-emitting diodes tube anode of coupling U101 is connected, capacitor C118 second end, resistance R115 second end, capacitor C120 second end and pressure stabilizing Pipe D105 anode is connected with zero curve N, and the light-emitting diodes tube cathode of optocoupler U101 is connected with triode Q100 collector, three poles Pipe Q100 base stage is connected with capacitor C119 first end and resistance R116 first end respectively, and resistance R116 second end is connected with zero curve N, Capacitor C119 second end is connected with triode Q100 emitter and diode D107 anode respectively, diode D107 cathode and zero curve N is connected, and the phototriode collector of optocoupler U101 is connected with capacitor C104 first end and+5V voltage respectively, capacitor C104 the Two ends are grounded GND, the phototriode emitter of optocoupler U101 respectively with resistance R117 first end, capacitor C122 first end and micro- Controller input terminal is connected, and resistance R117 second end and capacitor C122 second end are grounded GND.
3. a kind of zero firewire detection system of family table inlet wire according to claim 2, it is characterized in that: the detection of power loss electricity Road includes the A pin ground connection of resistance Re, capacitor Ce and monostable flipflop U1, the monostable flipflop U1, monostable trigger The B pin of device U1 is connected with the phototriode emitter of optocoupler U101, and the CLR pin of monostable flipflop U1 meets+5V respectively Voltage and resistance Re first end, resistance Re second end connect capacitor Ce first end and the RCext pin of monostable flipflop U1 respectively It is connected, capacitor Ce second end is connected with the Cext pin of monostable flipflop U1, the Q pin and microcontroller of monostable flipflop U1 Device is connected.
4. a kind of zero firewire detection method of family table inlet wire, using system of any of claims 1-3, it is characterized in that: Detection method and power failure detection method are reversely connected including zero firewire, and detection method includes the following steps for the zero firewire reversal connection:
S1: concentrator detects bus power frequency zero cross signal, and identification signal is sent when power frequency zero cross signal reaches, and identification signal is logical It crosses carrier communication and passes to detection device;
S2: carrier circuit receives identification signal and detects local zero firewire zero passage letter by zero cross detection circuit in detection device Number;
S3: identification signal and local zero firewire zero cross signal are transferred to microcontroller by carrier circuit;
S4: microcontroller compares the time difference of 1 firewire zero cross signal generation time point of identification signal receiving point and family table inlet wire, Zero firewire is just connecing if the two is coincide;Zero firewire is reversely connected if the two differs 10ms.
5. a kind of zero firewire detection method of family table inlet wire according to claim 4, it is characterized in that: the detection of power loss side Method, comprising the following steps:
S11: zero cross detection circuit generates waveform according to local zero firewire alternating current and is transferred to power-fail detection circuit;
S12: power-fail detection circuit based on the received waveform outputs level signals to microcontroller;
S13: microcontroller detects level signal, if high level then without power down;Power down then occurs if low level.
CN201811623239.9A 2018-12-28 2018-12-28 A kind of zero firewire detection system of family table inlet wire and method Pending CN110244172A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111123761A (en) * 2019-11-26 2020-05-08 国网浙江省电力有限公司湖州供电公司 Intelligent recognition device and recognition method for zero and live lines

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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103063904A (en) * 2012-12-30 2013-04-24 青岛东软载波科技股份有限公司 Zero cross detection circuit
WO2016072243A1 (en) * 2014-11-07 2016-05-12 オムロン株式会社 Method and device for inspecting photovoltaic power generation system
CN105717402A (en) * 2014-12-03 2016-06-29 国网辽宁省电力有限公司营口供电公司 Electric energy meter neutral-live wire reverse connection automatic identification circuit and electric energy meter neutral-live wire reverse connection automatic identification method
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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