WO2021258763A1 - 一种支持地线零线异常检测的插座检测装置及方法 - Google Patents
一种支持地线零线异常检测的插座检测装置及方法 Download PDFInfo
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- WO2021258763A1 WO2021258763A1 PCT/CN2021/078447 CN2021078447W WO2021258763A1 WO 2021258763 A1 WO2021258763 A1 WO 2021258763A1 CN 2021078447 W CN2021078447 W CN 2021078447W WO 2021258763 A1 WO2021258763 A1 WO 2021258763A1
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- 238000001514 detection method Methods 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims description 18
- 238000012360 testing method Methods 0.000 claims abstract description 97
- 230000006698 induction Effects 0.000 claims abstract description 30
- 230000007935 neutral effect Effects 0.000 claims description 121
- 230000005856 abnormality Effects 0.000 claims description 27
- 230000001939 inductive effect Effects 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 description 11
- 230000005684 electric field Effects 0.000 description 8
- 238000005070 sampling Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
- G01R31/69—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board of terminals at the end of a cable or a wire harness; of plugs; of sockets, e.g. wall sockets or power sockets in appliances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/717—Structural association with built-in electrical component with built-in light source
- H01R13/7175—Light emitting diodes (LEDs)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/76—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with sockets, clips or analogous contacts and secured to apparatus or structure, e.g. to a wall
- H01R24/78—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure with sockets, clips or analogous contacts and secured to apparatus or structure, e.g. to a wall with additional earth or shield contacts
Definitions
- the invention relates to the field of power socket detection, and in particular to a socket detection device and method that supports the detection of a ground wire zero line abnormality.
- 220V/50Hz power frequency electroscopes have at most the following seven functions: one is that the live wire, neutral wire, and ground wire are correctly wired; the other is the missing zero wire; the third is the missing Ground wire; fourth is the lack of fire wire; fifth is the fire wire and the ground wire are reversed; sixth is the fire wire and the neutral wire are reversed; seventh is the fire wire and the ground wire are reversed, and the ground wire is missing.
- the existing products are helpless.
- the missed detection of the above two states is accompanied by great safety hazards; among them, when the power socket has only the live wire, the neutral wire and the ground wire are missing, the live wire still has electricity. Because the neutral wire and the ground wire are open, the current power supply The socket polarity detector cannot be connected, and this state cannot be detected at all. The user mistakenly believes that the socket is out of power.
- the market urgently needs a socket detection device that supports the detection of an abnormality of the ground wire and zero wire to fill the gap in this regard, so as to ensure the safety of the operators.
- the present invention discloses a socket detection device and method that supports the detection of an abnormality of a ground wire and a neutral wire.
- a socket detection device that supports the detection of abnormality of the ground wire and the neutral wire, comprising: a micro-control unit, a test plug provided with a live wire connection end, a neutral wire connection end, and a ground wire connection end, and a detection circuit connected to the test plug;
- the live wire end of the power socket for testing is provided with an induction antenna, and the induction antenna is connected with the first signal input terminal of the micro-control unit.
- the detection circuit includes a live wire test sub-circuit, a neutral wire test sub-circuit, and a ground wire test sub-circuit which are respectively connected to the live wire connection end, the neutral wire connection end, and the ground wire connection end, and the live wire test sub-circuit, The neutral line test sub-circuit and the ground line test sub-circuit are sequentially connected to form a loop.
- the live wire test sub-circuit includes a first light emitting diode, a first protection resistor, and a first rectifier diode connected in series in sequence, the anode of the first light emitting diode is connected to the live wire connection end, and the cathode of the first rectifier diode is connected
- the ground wire test sub-circuit is connected;
- the neutral wire test sub-circuit includes a second rectifier diode, a second light-emitting diode, and a second protection resistor connected in series in sequence, and the anode of the second rectifier diode is connected to the neutral wire Connected, the input end of the first light-emitting diode is also connected to the output end of the second protection resistor;
- the ground wire test sub-circuit includes a third light-emitting diode, a third protection resistor, and a third rectifier diode connected in series in sequence, The cathode of the third rectifier diode is connected to the ground connection end,
- the resistance values of the live wire test sub-circuit, the neutral wire test sub-circuit, and the ground wire test sub-circuit are the same.
- the inductive antenna is connected to the first signal input terminal of the micro-control unit through a fourth protection resistor; and a grounded signal attenuation resistor is also connected to the input terminal of the fourth protection resistor.
- the first signal output terminal of the micro control unit is connected with a neutral ground wire open indicator; the second signal output terminal of the micro control unit is connected with a neutral ground wire reverse indicator.
- the live wire test sub-circuit, the neutral wire test sub-circuit, the ground wire test sub-circuit and the live wire connection end, the neutral wire connection end, and the ground wire connection end respectively pass through a first MOS tube switch, a second MOS tube switch, and a third MOS tube switch.
- MOS tube switch is connected; the gates of the first MOS tube switch, the second MOS tube switch, and the third MOS tube switch are respectively connected to the first control output terminal, the second control output terminal, and the third control unit of the micro-control unit The output terminal is connected.
- It also includes a Hall sensor set corresponding to the detection circuit, and the Hall sensor is connected to the second signal input end of the micro-control unit; and the inductive antenna is also connected to an analog-to-digital converter, the analog-to-digital converter Connect with the first signal input terminal of the micro control unit.
- a method for detecting an abnormality of a ground wire and a neutral wire implemented according to the above-mentioned socket detection device that supports detection of an abnormality of the ground wire and a neutral wire includes:
- the sensing antenna samples the test environment, the initial value of the self-check AD is obtained after conversion by the analog-to-digital converter, and the initial value of the self-check AD is added to the initial value to obtain the preset threshold;
- the induction antenna samples the live terminal of the tested power socket, and obtains voltage information after conversion by an analog-to-digital converter;
- control the first MOS transistor switch and the third MOS transistor switch to close, sample the live wire measurement sub-circuit through the inductive antenna, and obtain the first comparison voltage after conversion by the analog-to-digital converter ;
- the structure design of the present invention is reasonable and ingenious.
- the ground wire and the zero wire abnormality detection is automatically completed, and it is realized whether the power socket is in the live wire, lack of the neutral wire, the ground wire, or the neutral wire.
- the detection of the reverse state of the ground wire is also suitable for the national standard 220V/50HZ standard and the 110V power system of the United States/Japan; in addition to the current socket detection device can detect up to 7 power socket states, it also supports The detection of the abnormal state of the neutral wire of the power socket fills the gap in the market and guarantees the life safety of industry personnel in all aspects.
- Fig. 1 is a schematic circuit diagram of a socket detection device supporting ground zero line abnormality detection in an embodiment of the present invention.
- This embodiment provides a socket detection device that supports the detection of an abnormality of a ground wire and a neutral wire.
- a detection circuit connected with the test plug; an induction antenna is provided corresponding to the live end of the power socket under test, and the induction antenna is connected with the first signal input end of the micro-control unit.
- the live wire connection end, the neutral wire connection end, and the ground wire connection end are made of energized material.
- the live wire connection end, the neutral wire connection end, and the ground wire connection end are respectively inserted into the live wire holes of the tested power socket , In the neutral hole and the ground hole, connect the detection circuit with the live, neutral, and ground wires of the tested power socket to achieve correct wiring of the live, neutral, and ground wires; lack of neutral wires; lack of ground wires; lack of ground wires; Live wire; live wire and ground wire are connected reversely; live wire and neutral wire are connected reversely; live wire and ground wire are connected reversely, and the ground wire is missing; the detection and judgment of the above 7 situations;
- the power socket under test is determined by the way that the detection circuit cannot be turned on when it is connected to the power socket under test and the inductive antenna is used to obtain the voltage value that can only be collected when the live wire is connected. Lack of the neutral wire and ground wire; then determine the measured power supply by comparing the voltage value measured by the inductive antenna when the circuit under test is connected to the live wire, neutral/live wire, and ground wire of the power socket under test. Whether the neutral wire and ground wire of the socket are connected reversely.
- this socket detection device can not only detect up to 7 power socket states that the current socket detection device can detect, but also support the detection of the abnormal state of the ground wire of the power socket, filling the gap in the market, and fully protecting the lives of industry personnel. Safety.
- the detection circuit includes a live wire test sub-circuit, a neutral wire test sub-circuit, and a ground wire test sub-circuit which are respectively connected to the live wire connection end, the neutral wire connection end, and the ground wire connection end, and the live wire test sub-circuit, The neutral line test sub-circuit and the ground line test sub-circuit are sequentially connected to form a loop.
- the shapes of the live wire connection end, the neutral wire connection end, and the ground wire connection end are elongated.
- the socket detection device supporting the detection of the abnormality of the ground wire and the neutral wire further includes an insulating housing, and the insulating housing is provided with an independent first circuit accommodating cavity, a second circuit accommodating cavity, and a third circuit accommodating cavity.
- the live wire test sub-circuit, the neutral wire test sub-circuit, and the ground wire test sub-circuit are respectively arranged in the first circuit accommodating cavity, the second circuit accommodating cavity, and the third circuit accommodating cavity to be connected to the live wire Terminal, neutral wire connection terminal, ground wire connection terminal connection;
- a first antenna guide groove for the sensing antenna to slide is provided in the first circuit accommodating cavity, the second circuit accommodating cavity, and the third circuit accommodating cavity; the live wire connection end of the test plug A second antenna guide groove for the inductive antenna to slide is provided therein;
- the second circuit accommodating cavity, and the third circuit accommodating cavity are provided with a knob corresponding to the second antenna guide groove and the three first antenna guide grooves At least four gears, the sensing antenna and the knob are connected by a telescopic mechanism;
- the knob is driven to rotate by a steering drive device, the telescopic mechanism is driven by a telescopic drive mechanism to make a telescopic movement, and the steering drive device and the telescopic drive mechanism are respectively connected to the third signal output terminal and the first signal output terminal of the micro-control unit.
- the telescopic mechanism is a common piston rod
- the telescopic drive mechanism is a telescopic cylinder
- the steering drive device is a steering cylinder.
- the induction antenna can be driven to move to the first antenna guide groove or the second antenna guide groove through the cooperation of the knob and the telescopic mechanism, so as to enable the subsequent detection of the abnormality of the ground wire and the neutral wire.
- the method is implemented.
- the micro control unit is powered by a 3V power supply IC.
- the inductive antenna and the live wire end of the power socket under test have at least an electrical gap greater than 1 mm, which can resist the electric field signal of the live wire 1KV, so as to avoid the excessively large live wire electric field signal from causing safety hazards during measurement.
- the inductive antenna is wrapped by an insulated antenna housing to achieve the above-mentioned electrical gap of at least greater than 1 mm.
- the live wire test sub-circuit includes a first light emitting diode, a first protection resistor, and a first rectifier diode connected in series in sequence, the anode of the first light emitting diode is connected to the live wire connection end, and the cathode of the first rectifier diode is connected
- the ground wire test sub-circuit is connected;
- the neutral wire test sub-circuit includes a second rectifier diode, a second light-emitting diode, and a second protection resistor connected in series in sequence, and the anode of the second rectifier diode is connected to the neutral wire Connected, the input end of the first light-emitting diode is also connected to the output end of the second protection resistor;
- the ground wire test sub-circuit includes a third light-emitting diode, a third protection resistor, and a third rectifier diode connected in series in sequence, The cathode of the third rectifier diode is connected to the ground connection end,
- the resistance values of the first protection resistor, the second protection resistor, and the third protection resistor are 90 kiloohms.
- the live wire test sub-circuit and the neutral wire test sub-circuit are turned on during the positive half cycle of the alternating current, and the first light-emitting diode and the second light-emitting diode are lit;
- the neutral wire test sub-circuit and the ground wire test sub-circuit are equivalent to series connection Later, it is connected to the live wire and the ground wire in parallel, but because the second LED and the third LED are connected in series, the effective resistance has doubled, so the light of the second and third LEDs is very weak and almost invisible;
- the neutral wire test sub-circuit is turned on during the negative half cycle of the alternating current, and the second light-emitting diode is lit;
- the live wire test sub-circuit, the neutral wire test sub-circuit, and the ground wire measurement sub-circuit are all disconnected, and the first light-emitting diode and the second light-emitting diode are not touched. Bright;
- the live wire test sub-circuit and the ground wire connection sub-circuit are conducted in the negative half cycle of the alternating current, and the first light-emitting diode and the third light-emitting diode are lit;
- the neutral wire test sub-circuit and the ground wire test sub-circuit are turned on during the positive half cycle of the alternating current, and the second light-emitting diode and the third light-emitting diode are lit;
- the ground wire test sub-circuit is turned on during the negative half cycle of the alternating current, and the third light-emitting diode is lit.
- the resistance values of the live wire test sub-circuit, the neutral wire test sub-circuit, and the ground wire test sub-circuit are the same.
- the resistance values of the live wire test sub-circuit, the neutral wire test sub-circuit, and the ground wire test sub-circuit are the same, which can ensure that when the live wire test sub-circuit, the neutral wire test sub-circuit, and the ground wire test sub-circuit are connected to the same voltage,
- the electric field generated is the same. In order to reduce the interference of different electric fields caused by different resistance values during the subsequent implementation of the detection of whether the neutral wire and the ground wire are connected reversely, thereby improving the detection accuracy.
- the inductive antenna is connected to the first signal input terminal of the micro-control unit through a fourth protection resistor; and a grounded signal attenuation resistor is also connected to the input terminal of the fourth protection resistor.
- the resistance value of the grounded signal attenuation resistance is 50 megohms to avoid the measurement antenna being in a suspended state, so as to overcome the defect that the measuring antenna is easily interfered and the function state is unstable due to the suspended state. Furthermore, the measurement stability of the socket detection device is effectively improved.
- the first signal output terminal of the micro control unit is connected with a neutral ground wire open indicator; the second signal output terminal of the micro control unit is connected with a neutral ground wire reverse indicator.
- the micro control unit controls the neutral ground wire open indicator to light up, and when the neutral ground wire is determined to be reversed, the micro control unit controls the neutral ground wire reverse indicator Light up
- the micro-control unit can be a chip with logic operation function, control function and storage function such as a single chip microcomputer and CPU.
- the live wire test sub-circuit, the neutral wire test sub-circuit, the ground wire test sub-circuit and the live wire connection end, the neutral wire connection end, and the ground wire connection end respectively pass through a first MOS tube switch, a second MOS tube switch, and a third MOS tube switch.
- MOS tube switch is connected; the gates of the first MOS tube switch, the second MOS tube switch, and the third MOS tube switch are respectively connected to the first control output terminal, the second control output terminal, and the third control unit of the micro-control unit The output terminal is connected.
- It also includes a Hall sensor set corresponding to the detection circuit, and the Hall sensor is connected to the second signal input end of the micro-control unit; and the inductive antenna is also connected to an analog-to-digital converter, the analog-to-digital converter Connect with the first signal input terminal of the micro control unit.
- analog-to-digital converter can be embedded in the micro-control unit, or a micro-control unit with analog-to-digital conversion function can be directly adopted.
- a method for detecting an abnormality of a ground wire and a neutral wire implemented according to the above-mentioned socket detection device that supports detection of an abnormality of the ground wire and a neutral wire includes:
- the sensing antenna samples the test environment, the initial value of the self-check AD is obtained after conversion by the analog-to-digital converter, and the initial value of the self-check AD is added to the initial value to obtain the preset threshold;
- the AD value refers to ADC conversion, which is a sampling value of the analog-to-digital converter.
- the initial value of the self-check AD is the sampled value obtained by the power polarity detector during the power-on self-check. Compared with the subsequent restart of ADC sampling, it saves energy and improves efficient;
- the initial value is 90V.
- the effective voltage value of the existing power socket specification is at least 110V when the power is turned on, and the measured value of the induction antenna is considered to be the instantaneous voltage and the measurement error of the induction antenna itself, the said The initial value is set to 90V, which can be applied to both the national standard 220V power socket and the 110V power system detection of the United States/Japan;
- the electric field interference in the environment is eliminated, which further improves the measurement stability of this method and improves the detection accuracy;
- the test plug of the power polarity detector Insert the test plug of the power polarity detector into the tested power socket, obtain the current value of the detection circuit through the Hall sensor, and determine whether the current value is greater than the preset current; the preset current is the current value when the test circuit is not charged , Generally 0A;
- the induction antenna samples the live terminal of the tested power socket, and obtains voltage information after conversion by an analog-to-digital converter;
- control the first MOS transistor switch and the third MOS transistor switch to close, sample the live wire measurement sub-circuit through the inductive antenna, and obtain the first comparison voltage after conversion by the analog-to-digital converter ;
- the potential on the ground wire of the power socket is always 0, although the neutral wire is also grounded, due to various reasons such as humidity and distance, the potential on the neutral wire terminal in practical applications will not be completely 0, and the potential The greater the difference, the greater the measured voltage; and because the potential on the live wire is constant, the voltage between the live wire and the ground of the tested power socket must be greater than the voltage between the live wire and the neutral wire. To be big. Furthermore, it can be concluded that under normal circumstances, the first comparison voltage must be greater than the second comparison voltage; therefore, when the second comparison voltage is greater than the first comparison voltage, it can be determined that the measured voltage is greater than the first comparison voltage. The neutral and ground wires of the power socket are connected reversely.
- This method is used in conjunction with the socket detection device to automatically complete the detection of the abnormality of the ground wire and the neutral wire, which realizes the detection of whether the power socket is in the state of only live wire, missing neutral wire, ground wire, or the neutral wire and the ground wire. It is also suitable for National standard 220V/50HZ system, and 110V power supply systems such as the United States/Japan; and by obtaining the initial value of self-checking AD, the electric field interference in the environment is eliminated, and the measurement stability and detection accuracy of this method are improved.
- test plug of the socket detection device Insert the test plug of the socket detection device into the tested power socket, obtain the circuit status information through the Hall sensor, and determine whether the current status information is greater than the preset current; when the current status information is less than or equal to the preset current, determine the power pole
- the detection circuit of the tester is not live, that is, the tested power socket does not form a loop through the power polarity detector. At this time, the tested power socket may lack live wire, or the tested power socket lacks neutral wire or ground wire;
- the induction antenna is driven to move to the second antenna guide groove, the induction antenna is pushed into the live wire connection end of the test plug, and the voltage information corresponding to the live wire end of the tested power socket is received; and then judge Whether the voltage information is greater than the preset threshold calculated above;
- the induction antenna is driven to move to the second antenna guide groove to receive the voltage of the first live wire terminal; it is further judged whether the voltage of the first live wire terminal is greater than the preset voltage (90V), so as to realize the pairing Determine whether the power socket is connected with a live wire, and the live wire is connected in the correct position;
- the fourth control information is output, and the first switch and the third switch are controlled.
- the switch is closed, so that the detection circuit restores the connection with the live wire end and the ground wire end of the power socket; and through the cooperation of the knob and the telescopic mechanism, the inductive antenna is driven to move to the first antenna guide groove of the first circuit accommodating cavity, Make the sensing antenna close to the line of measurement sub-circuit, and the voltage information collected by the sensing antenna through the electric field of the line of measurement sub-circuit at this time is used as the first comparison voltage; furthermore, it receives the first comparison voltage obtained from the sensing antenna and temporarily stores it ;
- output fifth control information to control the second switch to close and the third switch to open so that the detection circuit restores the connection with the neutral end of the power socket and disconnects the detection circuit from the tested power supply
- the connection of the ground terminal of the socket and then through the cooperation of the knob and the telescopic mechanism, the induction antenna is driven to move to the first antenna guide groove of the second circuit housing cavity, so that the induction antenna is close to the zero line sub-circuit, and the induction antenna is now
- the voltage information collected by the electric field of the zero line sub-circuit is used as the second comparison voltage; furthermore, the second comparison voltage obtained from the induction antenna is received and temporarily stored;
- the induction antenna collects ten consecutive instantaneous voltages at the live terminal of the tested power socket, and the instantaneous voltage is regarded as a sine cycle Information; After removing the maximum and minimum values of ten consecutive sinusoidal period information, the average value of the remaining 8 sinusoidal period information is calculated, the average value is used as the voltage information, and then whether the voltage information described above is greater than The judgment of the preset threshold calculated above realizes the filtering effect; at the same time, this filtering process is also applicable to the collection of the first comparison voltage and the second comparison voltage.
- the filtering process can also be one, determine the maximum deviation value allowed by the two induction antenna sampling (set as A), and judge each time a new sample value is detected: if the difference between the current value and the previous value is less than or equal to A, The current value is valid; if the difference between the current value and the last value is greater than A, the current value is invalid, and the last value is used instead of the current value.
- the current value is used as the voltage information.
- the length of the queue is fixed to N.
- N The length of the queue is fixed to N.
- the original data at the head of the queue is discarded, and the data in the queue is discarded.
- the structure design of the present invention is reasonable and ingenious.
- the ground wire and the zero wire abnormality detection is automatically completed, and it is realized whether the power socket is in the live wire, lack of the neutral wire, the ground wire, or the neutral wire.
- the detection of the reverse state of the ground wire is also suitable for the national standard 220V/50HZ standard and the 110V power system of the United States/Japan; in addition to the current socket detection device can detect up to 7 power socket states, it also supports The detection of the abnormal state of the neutral wire of the power socket fills the gap in the market and guarantees the safety of the industry personnel in all aspects.
- the structure design of the present invention is reasonable and ingenious.
- the ground wire and the zero wire abnormality detection is automatically completed, and it is realized whether the power socket is in the live wire, lack of the neutral wire, the ground wire, or the neutral wire.
- the detection of the reverse state of the ground wire is also applicable to the national standard 220V/50HZ standard and the 110V power system of the United States/Japan; in addition to the current socket detection device can detect up to 7 power socket states, it also supports The detection of the abnormal state of the neutral wire of the power socket fills the gap in the market and guarantees the safety of the industry personnel in all aspects.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Fire Alarms (AREA)
Abstract
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Claims (8)
- 一种支持地线零线异常检测的插座检测装置,其特征在于,包括:微控制单元、设有火线连接端、零线连接端、地线连接端的测试插头、以及与该测试插头连接的检测电路;对应被测电源插座的火线端设置有感应天线,且所述感应天线与所述微控制单元的第一信号输入端连通;所述检测电路包括分别与所述火线连接端、零线连接端、地线连接端连接的火线测试子电路、零线测试子电路、以及地线测试子电路,且所述火线测试子电路、零线测试子电路、地线测试子电路依次连接形成回路;其中,所述火线测试子电路包括依次串联的第一发光二极管、第一保护电阻、第一整流二极管,所述第一发光二极管的正极与所述火线连接端连接,所述第一整流二极管的负极与所述地线测试子电路连接;所述零线测试子电路包括依次串联的第二整流二极管、第二发光二极管、第二保护电阻,所述第二整流二极管的正极与所述零线连接端连接,所述第一发光二极管的输入端还与所述第二保护电阻的输入端连接;所述地线测试子电路包括依次串联的第三发光二极管、第三保护电阻、第三整流二极管,所述第三整流二极管的负极与所述地线连接端连接,所述第二整流二极管的正极还与所述第三发光二极管的正极连接。
- 根据权利要求1所述支持地线零线异常检测的插座检测装置,其特征在于,所述火线测试子电路、零线测试子电路、地线测试子电路的阻值相同。
- 根据权利要求1所述支持地线零线异常检测的插座检测装置,其特征在于,所述感应天线通过一第四保护电阻与所述微控制单元的第一信号输入端连接;且于所述第四保护电阻的输入端还连接有接地的信号衰减电阻。
- 根据权利要求1所述支持地线零线异常检测的插座检测装置,其特征在于,所述微控制单元的第一信号输出端连接有零线地线开路指示灯;所述微控制单元的第二信号输出端连接有零线地线接反指示灯。
- 根据权利要求1所述支持地线零线异常检测的插座检测装置,其特征在 于,所述火线测试子电路、零线测试子电路、地线测试子电路与所述火线连接端、零线连接端、地线连接端分别通过第一MOS管开关、第二MOS管开关、第三MOS管开关连接;所述第一MOS管开关、第二MOS管开关、第三MOS管开关的栅极分别与所述微控制单元的第一控制输出端、第二控制输出端、第三控制输出端连接。
- 根据权利要求1所述支持地线零线异常检测的插座检测装置,其特征在于,其还包括对应所述检测电路设置的霍尔传感器,该霍尔传感器与所述微控制单元的第二信号输入端连接;且所述感应天线还连接有一模数转换器,该模数转换器与所述微控制单元的第一信号输入端连接。
- 一种根据权利要求5所述支持地线零线异常检测的插座检测装置实施的地线零线异常检测方法,其特征在于,包括:预设一个付初值,感应天线对测试环境进行采样,经模数转换器转换后获得自检AD初值,将自检AD初值与付初值相加获得预设门限;将电源极性检测器的测试插头插入被测电源插座,通过霍尔传感器获取检测电路的电流值,并判断所述电流值是否大于预设电流;若所述电流值小于或等于预设电流,感应天线对被测电源插座的火线端进行采样,经模数转换器转换后获得电压信息;当所述电压信息大于预设门限时,确定被测电源插座的零线、地线开路,点亮所述零线地线开路指示灯。
- 根据权利要求7所述地线零线异常检测方法,其特征在于,在判断所述电流值是否大于预设电流时,还包括:若所述电流值大于预设电流,控制所述第一MOS管开关、第三MOS管开关闭合,通过感应天线对火线测量子电路进行采样,经模数转换器转换后获得第一比对电压;控制第二MOS管开关闭合,第三MOS管开关断开,通过感应天线对零线测量子电路进行采样,经模数转换器转换后获得第二比对电压;当所述第二比对电压大于所述第一比对电压时,确定被测电源插座的零 线、地线接反,点亮所述零线地线接反指示灯。
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Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3151261A1 (de) * | 1981-12-24 | 1983-07-07 | Alois Zettler Elektrotechnische Fabrik GmbH, 8000 München | Pruefgeraet zur pruefung von 2-poligen schutzkontaktsteckdosen in verbraucheranlagen mit fehlerstromschutzschaltung |
GB2257797A (en) * | 1991-07-06 | 1993-01-20 | Peter J Bennison | Testing electricity supplies |
CN1800870A (zh) * | 2006-01-10 | 2006-07-12 | 刘锦泰 | 单相插头式电源检测仪 |
CN103954880A (zh) * | 2014-05-16 | 2014-07-30 | 佛山市新基德电子厂有限公司 | 单相插头式电源检测仪 |
CN206832925U (zh) * | 2017-06-20 | 2018-01-02 | 漳州市玉山电子制造有限公司 | 一种插座测试电路 |
CN210775807U (zh) * | 2019-09-02 | 2020-06-16 | 苏州迈尔斯电子有限公司 | 一种多功能插座测试仪 |
CN111580019A (zh) * | 2020-06-24 | 2020-08-25 | 优利德科技(中国)股份有限公司 | 一种地线零线异常检测方法和装置、系统及可读存储介质 |
CN111722150A (zh) * | 2020-06-24 | 2020-09-29 | 优利德科技(中国)股份有限公司 | 一种支持地线零线异常检测的插座检测装置及方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08220180A (ja) * | 1995-02-16 | 1996-08-30 | M D Syst:Kk | Acコンセント配線試験装置 |
KR20010029628A (ko) * | 1999-09-24 | 2001-04-06 | 가츠노리 이카케 | 교류 전원 접지측 검출장치 |
CN101004435A (zh) * | 2006-10-31 | 2007-07-25 | 谭启仁 | 一种电器插座的布线测试装置 |
CN201369472Y (zh) * | 2009-02-12 | 2009-12-23 | 东莞岳丰电子科技有限公司 | 插头或插座之接地导通状态检测装置 |
CN102447197A (zh) * | 2010-10-08 | 2012-05-09 | 张海艇 | 具有地线开路警示功能的电源插座 |
CN102457042B (zh) * | 2010-10-26 | 2015-05-20 | 黄华道 | 漏电检测保护电路 |
CN203561719U (zh) * | 2013-11-08 | 2014-04-23 | 联想(北京)有限公司 | 地线连接状态检测及报警装置和电源 |
CN104898015B (zh) * | 2015-06-27 | 2017-11-21 | 广东万和热能科技有限公司 | 交流电零火线接反及地线异常检测电路 |
US12057692B2 (en) * | 2015-09-24 | 2024-08-06 | Brainwave Research Corporation | Built-in instrumentation integrating power measurement, distribution and management, power safety, and automation control |
CN107703414B (zh) * | 2016-08-09 | 2021-01-12 | 华为技术有限公司 | 检测电路及检测方法 |
-
2020
- 2020-06-24 CN CN202010585160.2A patent/CN111722150B/zh active Active
-
2021
- 2021-03-01 WO PCT/CN2021/078447 patent/WO2021258763A1/zh active Application Filing
- 2021-06-23 US US17/356,508 patent/US11255924B2/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3151261A1 (de) * | 1981-12-24 | 1983-07-07 | Alois Zettler Elektrotechnische Fabrik GmbH, 8000 München | Pruefgeraet zur pruefung von 2-poligen schutzkontaktsteckdosen in verbraucheranlagen mit fehlerstromschutzschaltung |
GB2257797A (en) * | 1991-07-06 | 1993-01-20 | Peter J Bennison | Testing electricity supplies |
CN1800870A (zh) * | 2006-01-10 | 2006-07-12 | 刘锦泰 | 单相插头式电源检测仪 |
CN103954880A (zh) * | 2014-05-16 | 2014-07-30 | 佛山市新基德电子厂有限公司 | 单相插头式电源检测仪 |
CN206832925U (zh) * | 2017-06-20 | 2018-01-02 | 漳州市玉山电子制造有限公司 | 一种插座测试电路 |
CN210775807U (zh) * | 2019-09-02 | 2020-06-16 | 苏州迈尔斯电子有限公司 | 一种多功能插座测试仪 |
CN111580019A (zh) * | 2020-06-24 | 2020-08-25 | 优利德科技(中国)股份有限公司 | 一种地线零线异常检测方法和装置、系统及可读存储介质 |
CN111722150A (zh) * | 2020-06-24 | 2020-09-29 | 优利德科技(中国)股份有限公司 | 一种支持地线零线异常检测的插座检测装置及方法 |
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