CN209841985U - Zero fire line detecting system of house meter inlet wire - Google Patents
Zero fire line detecting system of house meter inlet wire Download PDFInfo
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- CN209841985U CN209841985U CN201822243208.2U CN201822243208U CN209841985U CN 209841985 U CN209841985 U CN 209841985U CN 201822243208 U CN201822243208 U CN 201822243208U CN 209841985 U CN209841985 U CN 209841985U
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- 238000001514 detection method Methods 0.000 claims abstract description 67
- 239000003990 capacitor Substances 0.000 claims description 34
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Abstract
The utility model relates to a zero live wire detecting system of house table inlet wire, including concentrator and detection device, the concentrator is located on the distribution network bus, detection device locates in the house table, detection device includes power supply circuit, falls electric detection circuitry, RF circuit, microcontroller and carrier circuit, power supply circuit is for falling electric detection circuitry, RF circuit, microcontroller and carrier circuit power supply, and microcontroller links to each other with RF circuit, carrier circuit and electricity detection circuitry respectively, contain zero cross detection circuitry among the carrier circuit, zero cross detection circuitry links to each other with electricity detection circuitry, detection device passes through carrier circuit and RF circuit and concentrator communication. The utility model has the advantages that: the whole structure of the circuit is simple, and the cost is low; by adopting carrier and wireless dual-mode communication, the communication blind area originally existing in the two communication modes is avoided, and the system is higher in speed and more stable.
Description
Technical Field
The utility model relates to a distribution network detects, especially relates to a zero live wire detecting system of house meter inlet wire.
Background
In low voltage users, the control switch is mainly used for controlling the live wire. If ammeter inlet wire live wire and zero line are transposition, can cause the control switch control zero line of consumer, even under the condition of control switch at the disconnection, the electrical apparatus is inside still electrified, brings very big potential safety hazard. The problem does not affect the normal electricity consumption of the user, namely the user and related departments are not easy to find the problem, but if the user carries out operations such as bulb replacement, household power line maintenance and the like which need to be carried out under the condition of power failure, the personal safety of the user or related personnel is possibly damaged.
Disclosure of Invention
The utility model mainly solves the problem of providing an indoor meter incoming line zero-live line detection system adopting dual-mode communication and simple structure.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a zero fire line detecting system of house table inlet wire, includes concentrator and detection device, the concentrator is located on the distribution network bus, detection device locates in the house table, detection device includes power supply circuit, power failure detection circuit, RF circuit, microcontroller and carrier circuit, power supply circuit is for power failure detection circuit, RF circuit, microcontroller and carrier circuit power supply, and microcontroller links to each other with RF circuit, carrier circuit and power failure detection circuit respectively, contain zero cross detection circuit among the carrier circuit, zero cross detection circuit links to each other with power failure detection circuit, detection device passes through carrier circuit and RF circuit and concentrator communication.
The concentrator sends an identification signal when a power frequency zero-crossing signal arrives, the identification signal is modulated by the concentrator and then transmitted to the carrier circuit through the power line, and the carrier circuit receives the identification and demodulation identification signal and transmits the demodulated identification signal to the microcontroller; the zero-crossing detection circuit in the carrier circuit detects a zero-crossing signal at the household meter inlet wire and transmits the zero-crossing signal to the microcontroller, and the microcontroller judges whether the household meter inlet wire zero-live wire is reversely connected or not by comparing the identification signal with the zero-crossing signal; the zero-crossing detection circuit also provides a detection signal for the power failure detection circuit, the power failure detection circuit detects whether power failure occurs by using the detection signal, the RF circuit and the carrier circuit respectively provide a wireless communication channel and a carrier communication channel, and the wireless communication channel and the carrier communication channel can enable the concentrator and the reverse connection identification device to communicate with each other.
As a preferable scheme of the above scheme, the zero-crossing detection circuit includes resistors R113, R114, R115, R116, R117, capacitors C118, C119, C120, C104, C122, diodes D104, D107, a regulator D105, an optocoupler U101, and a triode Q100, a first end of the resistor R113 is connected to a household meter incoming line live wire L, a second end of the resistor R113 is connected to a first end of the resistor R114, a second end of the resistor R114 is connected to an anode of the diode D104, a cathode of the diode D104 is connected to a first end of the capacitor C118, a first end of the resistor R115, a first end of the resistor C120, a cathode of the regulator D105, and an anode of a light emitting diode of the optocoupler U101, a second end of the capacitor C118, a second end of the resistor R115, a second end of the capacitor C120, and an anode of the regulator D105 are connected to a neutral line N, a cathode of the light emitting diode of the optocoupler U101 is connected to a collector of the triode Q100, a base of the triode Q100 is connected to a first, the second end of the capacitor C119 is connected with an emitting electrode of the triode Q100 and an anode of the diode D107 respectively, a cathode of the diode D107 is connected with a zero line N, a collector of a phototriode of the optocoupler U101 is connected with a first end of the capacitor C104 and +5V voltage respectively, the second end of the capacitor C104 is connected with a ground GND, an emitting electrode of a phototriode of the optocoupler U101 is connected with a first end of a resistor R117, a first end of a capacitor C122 and an input end of a microcontroller respectively, and the second end of the resistor R117 and the second end of the.
As a preferable scheme of the above scheme, the power down detection circuit includes a resistor Re, a capacitor Ce, and a monostable flip-flop U1, a pin a of the monostable flip-flop U1 is grounded, a pin B of the monostable flip-flop U1 is connected to an emitter of a phototransistor of the optocoupler U101, a CLR pin of the monostable flip-flop U1 is connected to a +5V voltage and a first end of the resistor Re, a second end of the resistor Re is connected to a first end of the capacitor Ce and a RCext pin of the monostable flip-flop U1, a second end of the capacitor Ce is connected to a Cext pin of the monostable flip-flop U1, and a Q pin of the monostable flip-flop U1 is connected to the microcontroller. The monostable trigger in the circuit can output a high level when a signal jumps, the high level output after a certain time delay is changed into a low level, the delay time of the high level can be reset when the signal jumps are received again in the time delay, namely, the monostable trigger can continuously output the high level under the influence of continuous pulse signals, when a circuit is powered on, the power failure detection circuit receives continuous pulse signals sent by the zero-crossing detection circuit, the power failure detection circuit continuously outputs the high level, otherwise, when the circuit is powered off, the power failure detection circuit outputs the low level.
The utility model has the advantages that: the whole structure of the circuit is simple, and the cost is low; by adopting carrier and wireless dual-mode communication, the communication blind area originally existing in the two communication modes is avoided, and the system is higher in speed and more stable.
Drawings
Fig. 1 is a connection block diagram of the present invention.
Fig. 2 is a schematic circuit diagram of the middle zero-crossing detection circuit of the present invention.
Fig. 3 is the utility model discloses well power down detection circuit's a circuit connection schematic diagram.
1-concentrator 2-carrier circuit 3-microcontroller 6-power supply circuit 7-RF circuit.
Detailed Description
The technical solution of the present invention is further described below by way of examples and with reference to the accompanying drawings.
Example (b):
this embodiment a zero live line detecting system of house table inlet wire, as shown in fig. 1, including concentrator 1 and detection device, the concentrator is located on the distribution network bus, detection device locates in the house table, detection device includes power supply circuit 6, power down detection circuitry 4, RF circuit 7, microcontroller 3 and carrier circuit 2, power supply circuit is for power down detection circuitry, RF circuit, microcontroller and carrier circuit power supply, and microcontroller links to each other with RF circuit, carrier circuit and power down detection circuitry respectively, contain zero cross detection circuitry among the carrier circuit, zero cross detection circuitry links to each other with power down detection circuitry, detection device passes through carrier circuit and RF circuit and concentrator communication.
As shown in fig. 2, the zero-crossing detection circuit includes resistors R113, R114, R115, R116, R117, capacitors C118, C119, C120, C104, C122, diodes D104, D107, a regulator tube D105, an optocoupler U101, and a triode Q100, a first end of the resistor R113 is connected to a house meter incoming live wire L, a second end of the resistor R113 is connected to a first end of the resistor R114, a second end of the resistor R114 is connected to an anode of the diode D104, a cathode of the diode D104 is connected to a first end of the capacitor C118, a first end of the resistor R115, a first end of the resistor C120, a cathode of the regulator tube D105, and an anode of a light emitting diode of the optocoupler U101, a second end of the capacitor C118, a second end of the resistor R115, a second end of the capacitor C120, and an anode of the regulator tube D105 are all connected to a zero line N, a cathode of the light emitting diode of the U101 is connected to a collector of the triode Q100, a base of the triode Q100 is connected, the second end of the capacitor C119 is connected with an emitting electrode of the triode Q100 and an anode of the diode D107 respectively, a cathode of the diode D107 is connected with a zero line N, a collector of a phototriode of the optocoupler U101 is connected with a first end of the capacitor C104 and +5V voltage respectively, the second end of the capacitor C104 is connected with a ground GND, an emitting electrode of a phototriode of the optocoupler U101 is connected with a first end of a resistor R117, a first end of a capacitor C122 and an input end of a microcontroller respectively, and the second end of the resistor R117 and the second end of the.
As shown in fig. 3, the power-down detection circuit includes a resistor Re, a capacitor Ce, and a monostable flip-flop U1, where a pin a of the monostable flip-flop U1 is grounded, a pin B of the monostable flip-flop U1 is connected to an emitter of a phototransistor of the optocoupler U101, a CLR pin of the monostable flip-flop U1 is connected to a +5V voltage and a first end of the resistor Re, a second end of the resistor Re is connected to a first end of the capacitor Ce and a RCext pin of the monostable flip-flop U1, a second end of the capacitor Ce is connected to a Cext pin of the monostable flip-flop U1, and a Q pin of the monostable flip-flop U1 is connected to the microcontroller.
In the embodiment, the concentrator detects that the bus zero-crossing signal sends an identification signal when the power frequency zero-crossing signal arrives, the identification signal is modulated by the concentrator and then transmitted to the carrier circuit through the power line, and the carrier circuit receives the identification and demodulation identification signal and transmits the demodulated identification signal to the microcontroller; the zero-crossing detection circuit detects a zero-crossing signal at the inlet wire of the household meter and transmits the zero-crossing signal to the microcontroller, the microcontroller judges whether zero-live wires of the inlet wire of the household meter are reversely connected or not by comparing the identification signal with the zero-crossing signal, if the receiving point of the identification signal is the same as the zero-crossing point of the zero-crossing signal, the connection is normal, and if the receiving point of the identification signal is 10ms different from the zero-crossing point of the zero-. The carrier circuit provides a zero-crossing signal for the power failure detection circuit, the power failure detection circuit outputs a high level to the microcontroller when receiving the zero-crossing signal, the power failure detection circuit indicates that the power failure is not performed, when the power failure is performed, no alternating current exists in a circuit, the power failure detection circuit cannot receive a pulse signal, and the power failure detection circuit outputs a low level to the microcontroller. The RF circuitry and the carrier circuitry provide a wireless communication channel and a carrier communication channel, respectively, that enable the concentrator and the dock identification device to communicate with each other. When a user is provided with a multi-level electric meter, after the zero-live wire wiring state of the upper-level electric meter is confirmed, the zero-live wire wiring state of the lower-level electric meter can be detected by taking the zero-cross detection signal acquired by the reverse connection identification device in the upper-level electric meter as a reference.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (3)
1. The utility model provides a zero fire line detecting system of house table inlet wire, characterized by: including concentrator (1) and detection device, the concentrator is located on the distribution network bus, detection device locates in the household meter, detection device includes power supply circuit (6), falls electric detection circuitry (4), RF circuit (7), microcontroller (3) and carrier circuit (2), power supply circuit is for falling electric detection circuitry, RF circuit, microcontroller and carrier circuit power supply, and microcontroller links to each other with RF circuit, carrier circuit and fall electric detection circuitry respectively, contain zero cross detection circuit among the carrier circuit, zero cross detection circuit links to each other with falling electric detection circuitry, detection device passes through carrier circuit and RF circuit and concentrator communication.
2. The system of claim 1, wherein the system comprises: the zero-crossing detection circuit comprises resistors R113, R114, R115, R116, R117, a capacitor C118, C119, C120, C104, C122, diodes D104, D107, a voltage regulator tube D105, an optocoupler U101 and a triode Q100, wherein a first end of the resistor R113 is connected with a household meter incoming line live wire L, a second end of the resistor R113 is connected with a first end of the resistor R114, a second end of the resistor R114 is connected with an anode of the diode D104, a cathode of the diode D104 is respectively connected with a first end of the capacitor C118, a first end of the resistor R115, a first end of the resistor C120, a cathode of the voltage regulator tube D105 and an anode of a light emitting diode of the optocoupler U101, a second end of the capacitor C118, a second end of the resistor R115, a second end of the capacitor C120 and an anode of the voltage regulator tube D105 are respectively connected with a zero line N, a cathode of the light emitting diode of the optocoupler U101 is connected with a collector of the triode Q100, a base of the triode Q100 is respectively connected with a first end of the capacitor C119 and a first end of, the cathode of the diode D107 is connected with a zero line N, the collector of a phototriode of the optocoupler U101 is connected with the first end of a capacitor C104 and +5V voltage respectively, the second end of the capacitor C104 is grounded GND, the emitter of the phototriode of the optocoupler U101 is connected with the first end of a resistor R117, the first end of a capacitor C122 and the input end of the microcontroller respectively, and the second end of the resistor R117 and the second end of the capacitor C122 are both grounded GND.
3. The household meter inlet wire zero-fire wire detection system as claimed in claim 2, wherein: the power failure detection circuit comprises a resistor Re, a capacitor Ce and a monostable trigger U1, wherein a pin A of the monostable trigger U1 is grounded, a pin B of the monostable trigger U1 is connected with a phototriode emitter of an optocoupler U101, a CLR pin of the monostable trigger U1 is respectively connected with a +5V voltage and a first end of the resistor Re, a second end of the resistor Re is respectively connected with a first end of the capacitor Ce and a RCext pin of the monostable trigger U1, a second end of the capacitor Ce is connected with a Cext pin of the monostable trigger U1, and a Q pin of the monostable trigger U1 is connected with a microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822243208.2U CN209841985U (en) | 2018-12-28 | 2018-12-28 | Zero fire line detecting system of house meter inlet wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822243208.2U CN209841985U (en) | 2018-12-28 | 2018-12-28 | Zero fire line detecting system of house meter inlet wire |
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| Publication Number | Publication Date |
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| CN209841985U true CN209841985U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822243208.2U Active CN209841985U (en) | 2018-12-28 | 2018-12-28 | Zero fire line detecting system of house meter inlet wire |
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| CN (1) | CN209841985U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114217245A (en) * | 2021-12-23 | 2022-03-22 | 广东电网有限责任公司江门供电局 | System for quickly checking user-to-user interaction of newly-built wiring |
-
2018
- 2018-12-28 CN CN201822243208.2U patent/CN209841985U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114217245A (en) * | 2021-12-23 | 2022-03-22 | 广东电网有限责任公司江门供电局 | System for quickly checking user-to-user interaction of newly-built wiring |
| CN114217245B (en) * | 2021-12-23 | 2023-08-04 | 广东电网有限责任公司江门供电局 | System for checking household serial number by uniformly building new assembly line |
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