CN211402505U - Single-phase intelligent electric meter capable of detecting reverse connection of live wire and zero line - Google Patents
Single-phase intelligent electric meter capable of detecting reverse connection of live wire and zero line Download PDFInfo
- Publication number
- CN211402505U CN211402505U CN201921657700.2U CN201921657700U CN211402505U CN 211402505 U CN211402505 U CN 211402505U CN 201921657700 U CN201921657700 U CN 201921657700U CN 211402505 U CN211402505 U CN 211402505U
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistor
- electrically connected
- control chip
- main control
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a single-phase intelligent ammeter capable of carrying out reverse connection detection of a live wire and a zero line, which comprises a main control chip U1, a live wire and zero line detection circuit, a metering circuit, a power circuit, a pulse circuit, a storage circuit, an alarm detection circuit and a display circuit; the main control chip U1 is respectively and electrically connected with live wire and zero line detection circuit, metering circuit, power supply circuit, pulse circuit, memory circuit, warning detection circuit and display circuit. The utility model discloses following beneficial effect has: the utility model discloses can detect whether zero line and live wire connect conversely, connect under the circumstances of opposition appearing zero line and live wire, can report to the police, reduce the potential safety hazard, improve the security.
Description
Technical Field
The utility model belongs to the technical field of the smart electric meter technique and specifically relates to a connect reverse back at live wire and zero line, can report to the police, reduce the potential safety hazard can carry out the single-phase smart electric meter that live wire and zero line connect the detection in reverse.
Background
The intelligent electric meter is an intelligent terminal of an intelligent power grid, is not an electric energy meter in the traditional sense, has intelligent functions such as bidirectional multi-rate metering function, user side control function, bidirectional data communication function of multiple data transmission modes, electricity larceny prevention function and the like in order to adapt to the use of the intelligent power grid and new energy besides the metering function of basic electricity consumption of the traditional electric energy meter, and represents the development direction of an intelligent terminal of a future energy-saving intelligent power grid end user. At present, there are diversified single-phase smart electric meters in the market, can satisfy customer's multiple demand. However, the single-phase intelligent electric meter which can give an alarm after the live wire and the zero wire are reversely connected does not exist, and potential safety hazards exist after the live wire and the zero wire of the electric meter are reversely connected.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not to meet the single-phase smart electric meter's that whether can report to the police behind the reversal to live wire and zero line not enough among the prior art, provide one kind and connect the reversal back at live wire and zero line, can report to the police, reduce the potential safety hazard can carry out the single-phase smart electric meter that live wire and zero line reversal detected.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a single-phase intelligent ammeter capable of performing reverse connection detection of a live wire and a zero wire comprises a main control chip U1, a live wire and zero wire detection circuit, a metering circuit, a power circuit, a pulse circuit, a storage circuit, an alarm detection circuit and a display circuit; the main control chip U1 is respectively and electrically connected with live wire and zero line detection circuit, metering circuit, power supply circuit, pulse circuit, memory circuit, warning detection circuit and display circuit.
The utility model discloses a live wire and zero line detection circuitry detect the zero line and the live wire of ammeter and whether connect anti-reverse, if the zero line and the live wire of ammeter exist and connect anti-reverse condition, then report to the police through alarm detection circuitry, remind the installer, guaranteed the safe in utilization of ammeter.
Preferably, the live and neutral detection circuit comprises a resistor R84, a resistor R101 and a capacitor C80; the resistor R84 is respectively and electrically connected with the main control chip U1, the resistor R101 and the capacitor C80, and the resistor R101 and the capacitor C80 are both grounded.
Preferably, the alarm detection circuit comprises an open end cover detection circuit, an open meter cover detection circuit, a magnetic detection circuit and an alarm circuit; the open end cover detection circuit, the open meter cover detection circuit, the magnetic detection circuit and the alarm circuit are electrically connected with the uniform main control chip U1.
Preferably, the metering circuit comprises a current transformer current sampling circuit, a manganin shunt current sampling circuit and a resistance voltage division sampling circuit; the current transformer current sampling circuit, the manganin shunt current sampling circuit and the resistance voltage division sampling circuit are all electrically connected with the main control chip U1.
Preferably, the power supply circuit comprises a mains supply conversion circuit and a battery power supply circuit; the commercial power conversion circuit and the battery power supply circuit are electrically connected with the main control chip U1.
Preferably, the pulse circuit comprises a photoelectric coupler E4, a light emitting diode Q5, a resistor R93, a resistor R27, a capacitor C71 and a capacitor C72; the 1 st pin of the photoelectric coupler E4, the anode of the light emitting diode Q5 and the capacitor C71 are electrically connected with the main control chip U1, the 2 nd pin of the photoelectric coupler E4 is electrically connected with the resistor R93, the cathode of the light emitting diode Q5 and the capacitor C71 are electrically connected with the resistor R27, the resistor R93 and the resistor R27 are electrically connected with the main control chip U1, and the 3 rd pin and the 4 th pin of the photoelectric coupler E4 are electrically connected with the capacitor C72.
Preferably, the model of the main control chip U1 is G80F 924.
Therefore, the utility model discloses following beneficial effect has: the utility model discloses can detect whether zero line and live wire connect conversely, connect under the circumstances of opposition appearing zero line and live wire, can report to the police, reduce the potential safety hazard, improve the security.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
fig. 2 is a pin connection diagram of the main control chip U1 of the present invention;
fig. 3 is a circuit diagram of the ac-dc conversion circuit of the present invention;
fig. 4 is a circuit diagram of the voltage conversion circuit of the present invention;
fig. 5 is a circuit diagram of the current sampling circuit of the current transformer of the present invention;
fig. 6 is a circuit diagram of the manganin shunt current sampling circuit of the present invention;
fig. 7 is a circuit diagram of the resistance divided voltage sampling circuit of the present invention;
fig. 8 is a circuit diagram of the pulse circuit of the present invention;
fig. 9 is a circuit diagram of the open end cap detection circuit of the present invention;
fig. 10 is a circuit diagram of the open lid detection circuit of the present invention;
fig. 11 is a circuit diagram of the magnetic detection circuit of the present invention;
fig. 12 is a circuit diagram of the live and neutral detection circuit of the present invention.
In the figure: the device comprises a main control chip U11, a live wire and zero line detection circuit 2, a metering circuit 3, a power supply circuit 4, a pulse circuit 5, a storage circuit 6, an alarm detection circuit 7, a display circuit 8, a current transformer current sampling circuit 31, a manganin shunt current sampling circuit 32, a resistance divided voltage sampling circuit 33, a commercial power conversion circuit 41, a battery power supply circuit 42, an open end cover detection circuit 71, an open meter cover detection circuit 72, a magnetic detection circuit 73, an alarm circuit 74, an alternating current-direct current conversion circuit 411 and a voltage conversion circuit 412.
Detailed Description
The invention will be further described with reference to the following detailed description and accompanying drawings:
the embodiment shown in fig. 1 is a single-phase smart meter capable of performing reverse connection detection of a live wire and a zero wire, and comprises a main control chip U11, a live wire and zero wire detection circuit 2, a metering circuit 3, a power supply circuit 4, a pulse circuit 5, a storage circuit 6, an alarm detection circuit 7 and a display circuit 8; the alarm detection circuit comprises an open end cover detection circuit 71, an open meter cover detection circuit 72, a magnetic detection circuit 73 and an alarm circuit 74; the metering circuit comprises a current transformer current sampling circuit 31, a manganin shunt current sampling circuit 32 and a resistance voltage division sampling circuit 33; the power supply circuit comprises a mains supply conversion circuit 41 and a battery power supply circuit 42; the main control chip U1 is respectively electrically connected with a live wire and zero line detection circuit, a current transformer current sampling circuit, a manganin shunt current sampling circuit, a resistance voltage division sampling circuit, a commercial power conversion circuit, a battery power supply circuit, a pulse circuit, a storage circuit, an open end cover detection circuit, a magnetic detection circuit, an alarm circuit and a display circuit; the main control chip U1 has a model G80F924, and the pin connections of the G80F924 are shown in FIG. 2.
As shown in fig. 3 and 4, the commercial power conversion circuit includes an ac/dc conversion circuit 411 and a voltage conversion circuit 412; the alternating current-direct current conversion circuit is electrically connected with the voltage conversion circuit, and the voltage conversion circuit is electrically connected with the main control chip U1; when the commercial power is normally supplied, the power is output through the AC/DC conversion circuit 411 and the voltage conversion circuit 412 for the power supply meter; when the zero line is removed, the battery power supply circuit supplies power, and after low power consumption processing is finished, the battery can be used for more than 15 years; as shown in fig. 5 and 6, current metering signals are collected through a current transformer current sampling circuit and a manganin current divider current sampling circuit, and as shown in fig. 7, voltage metering signals are collected through a resistance voltage division sampling circuit; the data storage is realized through an EEPROM storage chip; the data display of electric quantity, voltage and current is realized through the display circuit.
As shown in fig. 8, the pulse circuit includes a photocoupler E4, a light emitting diode Q5, a resistor R93, a resistor R27, a capacitor C71, and a capacitor C72; a 1 st pin of a photoelectric coupler E4, an anode of a light emitting diode Q5 and a capacitor C71 are electrically connected with a main control chip U1, a 2 nd pin of the photoelectric coupler E4 is electrically connected with a resistor R93, a cathode of the light emitting diode Q5 and a capacitor C71 are electrically connected with a resistor R27, a resistor R93 and a resistor R27 are electrically connected with a main control chip U1, and a 3 rd pin and a 4 th pin of the photoelectric coupler E4 are electrically connected with a capacitor C72; the output of the pulse lamp is realized through a pulse circuit.
As shown in fig. 9, the open end cap detection circuit includes a resistor R105, a capacitor C73, and a resistor R108; the capacitor C73 is electrically connected with the resistor R105 and the resistor R108 respectively, the resistor R105 and the resistor R108 are electrically connected with the main control chip U1, and the capacitor C73 is grounded; as shown in fig. 10, the open lid detection circuit includes a resistor R107, a resistor R106, a capacitor C74, and a switch K1; the resistor R107 is electrically connected with the capacitor C74, the resistor R106 and the switch K1 respectively, the capacitor C74, the resistor R106 and the resistor 107 are electrically connected with the main control chip U1, and the switch K1 and the capacitor C74 are grounded; as shown in fig. 11, the magnetic detection circuit includes a hall sensor U3, a resistor R128, and a capacitor C78; the Hall sensor is respectively and electrically connected with the resistor R128 and the capacitor C78, and the Hall sensor U3, the resistor R128 and the capacitor C78 are electrically connected with the main control chip U1; when the open end cover detection circuit or the open meter cover detection circuit or the magnetic detection circuit detects abnormality, the alarm circuit works to give an alarm to remind related personnel to process.
As shown in fig. 12, the live and neutral detection circuit includes a resistor R84, a resistor R101, and a capacitor C80; the resistor R84 is respectively and electrically connected with the main control chip U1, the resistor R101 and the capacitor C80, and the resistor R101 and the capacitor C80 are both grounded; configuring a timer for 10ms interruption, namely detecting every 10ms, and sampling a voltage signal between the resistor R101 and GND through an AD port; when the zero line and the live line are not connected reversely, the voltage at two ends of the resistor R101 is a constant signal and does not jump; but when live wire and zero line transposition, resistance R101's both ends just have an interfering signal to detect, through AD sampling, draw out data, when AD sampling value is greater than a fixed constant voltage, just can judge that the live wire and the zero line of ammeter connect conversely, report to the police through alarm circuit, remind the installer to handle.
It should be understood that the present embodiment is only for illustrating the present invention and is not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
Claims (7)
1. A single-phase intelligent electric meter capable of performing reverse connection detection on a live wire and a zero wire is characterized by comprising a main control chip U1(1), a live wire and zero wire detection circuit (2), a metering circuit (3), a power supply circuit (4), a pulse circuit (5), a storage circuit (6), an alarm detection circuit (7) and a display circuit (8); the main control chip U1 is respectively and electrically connected with live wire and zero line detection circuit, metering circuit, power supply circuit, pulse circuit, memory circuit, warning detection circuit and display circuit.
2. The single-phase smart meter capable of reverse connection detection of line and neutral conductors of claim 1, wherein said line and neutral detection circuit comprises a resistor R84, a resistor R101 and a capacitor C80; the resistor R84 is respectively and electrically connected with the main control chip U1, the resistor R101 and the capacitor C80, and the resistor R101 and the capacitor C80 are both grounded.
3. The single-phase smart meter capable of reverse connection detection of live and neutral wires according to claim 1, wherein the alarm detection circuit comprises an open end cover detection circuit (71), an open end cover detection circuit (72), a magnetic detection circuit (73), and an alarm circuit (74); the open end cover detection circuit, the open meter cover detection circuit, the magnetic detection circuit and the alarm circuit are electrically connected with the uniform main control chip U1.
4. The single-phase smart meter capable of reverse connection detection of live and neutral wires according to claim 1, wherein the metering circuit comprises a current transformer current sampling circuit (31), a manganin shunt current sampling circuit (32) and a resistance divided voltage sampling circuit (33); the current transformer current sampling circuit, the manganin shunt current sampling circuit and the resistance voltage division sampling circuit are all electrically connected with the main control chip U1.
5. The single-phase smart meter capable of reverse connection detection of live and neutral wires according to claim 1, wherein the power circuit comprises a mains conversion circuit (41) and a battery power circuit (42); the commercial power conversion circuit and the battery power supply circuit are electrically connected with the main control chip U1.
6. The single-phase smart meter capable of reverse connection detection of live and neutral wires according to claim 1, wherein the pulse circuit comprises a photoelectric coupler E4, a light emitting diode Q5, a resistor R93, a resistor R27, a capacitor C71 and a capacitor C72; the 1 st pin of the photoelectric coupler E4, the anode of the light emitting diode Q5 and the capacitor C71 are electrically connected with the main control chip U1, the 2 nd pin of the photoelectric coupler E4 is electrically connected with the resistor R93, the cathode of the light emitting diode Q5 and the capacitor C71 are electrically connected with the resistor R27, the resistor R93 and the resistor R27 are electrically connected with the main control chip U1, and the 3 rd pin and the 4 th pin of the photoelectric coupler E4 are electrically connected with the capacitor C72.
7. The single-phase smart meter capable of detecting reverse connection of the live wire and the neutral wire as claimed in claim 1, 2, 3, 4, 5 or 6, wherein the model of the master control chip U1 is G80F 924.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921657700.2U CN211402505U (en) | 2019-09-30 | 2019-09-30 | Single-phase intelligent electric meter capable of detecting reverse connection of live wire and zero line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921657700.2U CN211402505U (en) | 2019-09-30 | 2019-09-30 | Single-phase intelligent electric meter capable of detecting reverse connection of live wire and zero line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211402505U true CN211402505U (en) | 2020-09-01 |
Family
ID=72232248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921657700.2U Active CN211402505U (en) | 2019-09-30 | 2019-09-30 | Single-phase intelligent electric meter capable of detecting reverse connection of live wire and zero line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211402505U (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 |
-
2019
- 2019-09-30 CN CN201921657700.2U patent/CN211402505U/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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204832339U (en) | Electric energy meter and system with load recognition function | |
| CN201210176Y (en) | Intelligent load identification module | |
| CN211402505U (en) | Single-phase intelligent electric meter capable of detecting reverse connection of live wire and zero line | |
| CN102967778B (en) | A kind of electrical network checkout gear and detection method thereof | |
| CN108562791A (en) | A kind of data acquisition device | |
| CN201281730Y (en) | Electric network loop-closing electricity-switching detection device | |
| CN208368860U (en) | Intelligent charge socket | |
| CN208421063U (en) | A kind of data acquisition device | |
| CN202815054U (en) | Digital electronic type wireless zero-sequence mutual inductor | |
| CN102095924A (en) | Detection device for power utilization and measurement of high-voltage circuit | |
| CN213181812U (en) | Low-voltage transformer area branch monitoring system and monitoring device | |
| CN204156305U (en) | The low-voltage distribution cabinet of low-pressure line-outgoing banded cable load current checkout gear | |
| CN204256842U (en) | A kind of multi-user's electric charge payment device | |
| CN207718533U (en) | The guide tracked multiloop electric energy meter of pre-payment | |
| CN202929067U (en) | Multipath guide rail type ammeter | |
| CN207504276U (en) | A kind of multifunction wiring board | |
| CN206892162U (en) | A kind of buckle-type transformer based on MCU controllers | |
| CN204832276U (en) | Electric energy meter with temperature -sensing function | |
| CN205720377U (en) | Bus power supply type multifunctional electric meter | |
| CN210166436U (en) | Compact guide rail type three-phase multifunctional electric energy meter with pluggable communication module | |
| CN110632373A (en) | Integrated intelligent low-voltage line monitoring device | |
| CN219643659U (en) | AC/DC hybrid micro-grid coordinated power supply monitoring circuit of intelligent building system | |
| CN203798904U (en) | Isolated single-phase energy consumption measurement and control circuit | |
| CN204424913U (en) | Intelligence connection the control of reactive power compensating instrument | |
| CN203455472U (en) | Detecting device capable of detecting both three-phase intelligent electric energy meter and III-type special transformer acquisition terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |