CN112421314A - Plug-and-play power consumption protection device and socket electric appliance - Google Patents
Plug-and-play power consumption protection device and socket electric appliance Download PDFInfo
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- CN112421314A CN112421314A CN202011311800.7A CN202011311800A CN112421314A CN 112421314 A CN112421314 A CN 112421314A CN 202011311800 A CN202011311800 A CN 202011311800A CN 112421314 A CN112421314 A CN 112421314A
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- 230000001012 protector Effects 0.000 claims description 53
- 238000007654 immersion Methods 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 13
- 230000007935 neutral effect Effects 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000002238 attenuated effect Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 4
- 101100156949 Arabidopsis thaliana XRN4 gene Proteins 0.000 claims description 3
- 101100215777 Schizosaccharomyces pombe (strain 972 / ATCC 24843) ain1 gene Proteins 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 6
- 238000002791 soaking Methods 0.000 description 8
- 230000005684 electric field Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
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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
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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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
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/713—Structural association with built-in electrical component with built-in switch the switch being a safety switch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Automation & Control Theory (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The embodiment of the invention discloses a plug-and-play power consumption protection device and a socket electric appliance, wherein the plug-and-play power consumption protection device comprises a row of plug shells and a first power line, a circuit board and a plurality of output sockets which are connected in parallel are arranged in the row of plug shells, a power consumption protection circuit is arranged on the circuit board, and a plurality of jacks matched with the output sockets are arranged on the front surfaces of the row of plug shells; the power utilization protection circuit is connected with the output socket, one end of the first power line is provided with a power input plug, and the other end of the first power line extends into one side of the extension socket shell and is connected with the power utilization protection circuit; the power protection circuit collects discrete current and electrons absorbed on a local ground wire and transmits the discrete current and the electrons to an output socket, and the power protection circuit detects the grounding state and calculates the current input voltage and frequency. The power input plug can be inserted on other sockets, and output socket connects the load, plug-and-play, need not the installation of professional and just can directly use, has solved the current inconvenient problem of anticreep device installation when intaking.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a plug-and-play electricity consumption protection device and a socket electric appliance.
Background
The current device of anticreep when intaking often installs to transformer case or master switch incasement, though provides the guarantee for the power consumption safety, needs professional installation. For example, there are at least 4 wires to be connected in the anti-creeping device, including the live wire of the power supply, the zero line of the power supply, the ground wire of the commercial power and the local ground wire, and since the live wire and the zero line of the high-voltage power supply are involved, the installation must be carried out by professional electrician and technical personnel, so that the use is inconvenient and the installation cost is paid additionally, and the safety protection of the electricity utilization can be obtained.
Disclosure of Invention
In view of the above technical problems, embodiments of the present invention provide a plug-and-play power protection device and a socket electrical appliance, so as to solve the problem that the conventional anti-creeping device is inconvenient to install when water is introduced.
The embodiment of the invention provides a plug-and-play electricity consumption protection device, which comprises a socket shell and a first power line, wherein a circuit board and a plurality of output sockets connected in parallel are arranged in the socket shell; the power utilization protection circuit is connected with the output socket, one end of the first power line is provided with a power input plug, and the other end of the first power line extends into one side of the extension socket shell and is connected with the power utilization protection circuit; the power utilization protection circuit collects discrete current and electrons absorbed on a local ground wire and transmits the discrete current and the electrons to an output socket, detects a grounding state and calculates the current input voltage and frequency.
Optionally, in the plug-and-play electricity protection device, a display screen for displaying input voltage and frequency is further disposed on the front surface of the extension socket housing, and the display screen is connected to the electricity protection circuit.
Optionally, in the plug-and-play power consumption protection device, the power consumption protection circuit includes a water immersion contactless protector, a control module, a power supply module, an input module, and an output module;
the immersion contactless protector is connected with the power supply module, the input module, the output module, the shared ground wire and the local ground wire; the control module is connected with the power supply module, the input module and the output module; the input module is connected with the other end of the first power line, and the output module is connected with the output socket;
the immersion non-touch protector collects and absorbs discrete current and electrons on a local ground wire except for a load and transmits the discrete current and the electrons to the output end of a zero line;
the power supply module reduces the input voltage and converts the input voltage into direct-current power supply voltage for power supply, and the input module attenuates the input voltage according to a preset attenuation proportion and outputs the attenuated input voltage to the control module;
the control module calculates the current input voltage and frequency according to the attenuated voltage, transmits the calculated numerical value to the display screen for displaying, and detects the grounding state and carries out corresponding detection result prompting.
Optionally, in the plug-and-play power protection device, a live wire pin of the immersion contactless protector is connected to the power supply module, the input module and the live wire input end; the zero line pin of the immersion non-touch protector is connected with the power supply module, the input module and the zero line input end; the FC pin of the immersion contactless protector is connected with a common ground wire, and the FG pin of the immersion contactless protector is connected with a local ground wire.
Optionally, in the plug-and-play power protection device, the control module includes a single chip, a differential unit for performing differential comparison on voltages of the live wire, the zero wire, the local ground wire and the common ground wire and outputting a comparison result, a shifter, a first indicator light, a second indicator light, a third indicator light and a first resistor;
the display screen is characterized in that a PB4 pin and a PB5 pin of the single chip microcomputer are connected with the display screen, an AIN6 pin of the single chip microcomputer is connected with a sliding end of a shifter, one end of the shifter is connected with a local ground wire, the other end of the shifter is connected with a power supply end, the anode of a first indicator lamp is connected with the power supply end, the cathode of the first indicator lamp is connected with one end of a first resistor, the other end of the first resistor is connected with a differential unit, and the AIN0 pin to the AIN5 pin of the single chip microcomputer are connected with the differential unit; the difference unit is connected with a starting point of a live wire, a zero line, a common ground wire, a local ground wire and an end point of the local ground wire; VDD pin, PA6 pin and VSS pin of singlechip all connect the power module, and the AIN7 pin of singlechip is connected the input module, and PA5 pin of singlechip is connected the output module, and PB3 pin of singlechip is connected the positive pole of second pilot lamp, and PB2 pin of singlechip is connected the positive pole of third pilot lamp, and the negative pole of second pilot lamp and the negative pole of third pilot lamp all connect local ground wire.
Optionally, in the plug-and-play power protection device, the differential unit includes a first differential amplifier, a second differential amplifier, a third differential amplifier, a fourth differential amplifier, a fifth differential amplifier, and a sixth differential amplifier;
the non-inverting input end of the first differential amplifier is connected with the live wire and the non-inverting input end of the third differential amplifier; the inverting input end of the first differential amplifier is connected with the inverting input end of the second differential amplifier, the inverting input end of the fifth differential amplifier, the inverting input end of the sixth differential amplifier and the common ground wire; the output end of the first differential amplifier is connected with an AIN0 pin of the single chip microcomputer, the non-inverting input end of the second differential amplifier is connected with a zero line and the inverting input end of the third differential amplifier, the output end of the second differential amplifier is connected with an AIN1 pin of the single chip microcomputer, the non-inverting input end of the fourth differential amplifier is connected with the non-inverting input end of the sixth differential amplifier, the terminal point of a local ground wire and the other end of the first resistor, the inverting input end of the fourth differential amplifier is connected with the non-inverting input end of the fifth differential amplifier and the starting point of the local ground wire, the output end of the third differential amplifier is connected with an AIN2 pin of the single chip microcomputer, the output end of the fourth differential amplifier is connected with an AIN3 pin of the single chip microcomputer, the output end of the fifth differential amplifier is connected with an.
Optionally, in the plug-and-play power protection device, the power supply module includes a power chip, a second resistor, and a switch; the VIN + pin of the power chip is connected with the live wire pin, the input module and the live wire input end of the immersion contactless protector; the VIN-pin of the power chip is connected with the zero line pin, the input module and the zero line input end of the water immersion contactless protector; the OUT pin of the power supply chip is connected with the power supply end, one end of the second resistor and the VDD pin of the single chip microcomputer; and the GND pin of the power supply chip is connected with one end of the switch, the VSS pin of the single chip microcomputer and the local ground wire, and the other end of the switch is connected with the other end of the second resistor and the PA6 pin of the single chip microcomputer.
Optionally, in the plug-and-play power protection device, the input module includes a voltage attenuator, a 1 st pin of the voltage attenuator is connected to the live wire input end and the VIN + pin of the power chip, a 2 nd pin of the voltage attenuator is connected to the neutral wire input end and the VIN-pin of the power chip, a 3 rd pin of the voltage attenuator is connected to the AIN7 pin of the single chip, and a 4 th pin of the voltage attenuator is connected to the local ground.
Optionally, in the plug-and-play power protection device, the output module includes a relay, a power supply end is connected to one end of a coil of the relay, a PA5 pin of the single chip microcomputer is connected to the other end of the coil of the relay, a 2 nd pin and a zero line input end of the voltage attenuator are connected to a first common point of the relay, a zero line output end and an output socket are connected to a first normally open contact of the relay, a 1 st pin and a live wire input end of the voltage attenuator are connected to a second common point of the relay, and a live wire output end and an output socket are connected to a second normally open contact of the relay.
The second aspect of the embodiment of the invention provides a socket electric appliance, which comprises a shell, wherein a leakage protector, a leakage air switch, a plurality of sockets, a zero row, a ground row, a second power line and the plug-and-play electricity utilization protection device are arranged in the shell;
one end of the second power line is provided with a power plug, the other end of the second power line extends into one side of the shell and is connected with the leakage protector and the zero row, and the leakage protector is connected with the leakage air switch; the power input plug of the electric protection device is inserted into any socket, the leakage air switch is connected with a plurality of sockets, and the zero row and the ground row are both connected with the electric protection device.
In the technical scheme provided by the embodiment of the invention, the plug-and-play electricity utilization protection device comprises a row of plug shells and a first power line, wherein a circuit board and a plurality of output sockets connected in parallel are arranged in the row of plug shells; the power utilization protection circuit is connected with the output socket, one end of the first power line is provided with a power input plug, and the other end of the first power line extends into one side of the extension socket shell and is connected with the power utilization protection circuit; the power utilization protection circuit collects discrete current and electrons absorbed on a local ground wire and transmits the discrete current and the electrons to an output socket, detects a grounding state and calculates the current input voltage and frequency. The shell of the power consumption protection device is of a row-plug type, a power input plug can be inserted into other sockets, an output socket is connected with a load, the power consumption protection device can be used in a plug-and-play mode, and can be directly used without being installed by professionals, so that the problem that the conventional anti-creeping device is inconvenient to install when water enters the device is solved.
Drawings
Fig. 1 is a schematic structural diagram of a plug-and-play power consumption protection device in an embodiment of the present invention.
Fig. 2 is a schematic circuit diagram of a plug-and-play power protection device in an embodiment of the present invention.
Fig. 3 is a schematic view of a three-core wire coil in an embodiment of the invention.
Fig. 4 is a schematic circuit diagram of an electrical outlet in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The embodiments of the present invention, and all other embodiments obtained by those skilled in the art without any inventive step, belong to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, a plug-and-play power protection device 10 according to an embodiment of the present invention includes a row of plug housings 110 and a first power line 120, where a circuit board and a plurality of output sockets (output socket 1 to output socket n) connected in parallel are disposed in the row of plug housings 110, a power protection circuit 130 is disposed on the circuit board, and a plurality of jacks mated with the output sockets are disposed on a front surface of the row of plug housings; the power utilization protection circuit 130 is connected with an output socket 160, one end of the first power line is provided with a power input plug 150, and the other end of the first power line extends into one side of the extension socket shell and is connected with the power utilization protection circuit 130 inside; the power consumption protection circuit 130 collects the discrete current and electrons absorbed on the local ground and transmits them to the output jack 160, detects the ground condition and calculates the present input voltage and frequency.
In the embodiment, the appearance of the power consumption protection device is designed to be a plug-in type, a power input plug at one end of the power consumption protection device can be plugged into other sockets, and an output socket is connected with a load and is plug-and-play without being installed by professional personnel; the internal electricity consumption protection circuit 130 realizes the leakage protection when water enters, and the electricity consumption safety protection is more easily obtained.
In practical implementation, the length of the first power line 120 can be shortened, and the power input plug 150 is disposed on the back of the extension socket housing 110, so as to facilitate carrying. The length of the first power cord 120 can also be extended to facilitate long-distance connection, and a receiving cavity can be added on the back of the extension socket housing 110 to accommodate the first power cord 120, and the power input plug 150 is clamped in the clamping slot on the side of the receiving cavity after the first power cord 120 is wound around the receiving cavity.
Preferably, the front surface of the extension socket housing is further provided with a display screen 140 for displaying input voltage and frequency, a transparent window may be arranged on the front surface of the extension socket housing, and the display screen 140 is located below the transparent window and connected with the power consumption protection circuit 130; the display screen 140 may be directly embedded in the front surface of the extension socket housing, and the specific installation manner is not limited herein.
The output socket 160 may be arranged in a three-dimensional or planar shape, and the output socket 160 may be directly connected to a load, or may be connected to a coil of three-wire coil, as shown in fig. 3, and the voltage plug 20 of the three-wire coil is inserted into the output socket 160. Because the three-core wire coil has a very long ground wire, the anti-creeping effect can be enhanced, and the three-core wire coil are combined together and are very suitable for outdoor disaster relief in wind and rain.
As shown in fig. 2, the power consumption protection circuit 130 includes a soaking contactless protector 131, a control module 132, a power supply module 133, an input module 134, and an output module 135; the immersion contactless protector 131 is connected with the power supply module 133, the input module 134, the output module 135, the common ground line CGND and the local ground line LGND; the control module 132 is connected with the power supply module 133, the input module 134 and the output module 135; the input module 134 is connected to the other end of the first power line, and the output module 135 is connected to the output socket 160.
The control module 132, the power supply module 133, the input module 134, and the output module 135 are integrated together to form the protection module 80 (as shown in fig. 4), and the immersion contactless protector 131 is independent of another module. The immersed contactless protector 131 collects and absorbs discrete currents and electrons on the local ground line LGND except for the load, and transmits the discrete currents and electrons to the zero line output terminal N _ OUT. The power supply module 133 reduces the input voltage (here, the commercial power) to a direct current power supply voltage for supplying power, and the input module 134 attenuates the input voltage according to a preset attenuation ratio and outputs the attenuated input voltage to the control module 132; the control module 132 calculates the current input voltage and frequency according to the attenuated voltage, transmits the calculated value to the display screen 140 for display, and the control module 132 further detects the grounding state and prompts a corresponding detection result.
The type of the soaking non-contact protector 131 is preferably TPT-3, and a live wire pin L1 of the soaking non-contact protector 131 is connected with the power supply module 133, the input module 134 and a live wire input end L _ IN; the neutral wire pin N1 of the immersion non-touch protector 131 is connected with the power supply module 133, the input module 134 and the neutral wire input end N _ IN; the FC pin of the flooding contactless protector 131 is connected to the common ground CGND, and the FG pin of the flooding contactless protector 131 is connected to the local ground LGND.
The soaking contactless protector 131 starts uninterrupted operation after being powered on, collects all discrete currents and electrons on a wire (i.e., a local ground wire) except for a load, immediately starts an electric field function after collecting the discrete currents and electrons, absorbs the discrete currents and electrons back into the electric field (the discrete currents and electrons start to be absorbed), and then continuously returns the absorbed currents and electrons to a power supply output (i.e., a zero line output end N _ OUT on an output socket) to be used as a power supply current. Because the discrete current and the electrons are captured, only voltage and no current exist in water, and the load current of the electric appliance continuously exists; therefore, in water and rainstorm environment, as long as the electrical appliance is reliably connected with the power supply and grounded, the human body cannot get an electric shock, and the electrical appliance works normally.
The control module 132 comprises a single chip microcomputer U1, a differential unit for performing differential comparison on voltages of a live wire, a zero wire, a local ground wire and a common ground wire and outputting a comparison result, a shifter VR, a first indicator light LED1, a second indicator light LED2, a third indicator light LED3 and a first resistor R1; the PB4 pin and the PB5 pin of the single chip microcomputer U1 are connected with the display screen 140, the AIN6 pin of the single chip microcomputer U1 is connected with the sliding end of the shifter VR, one end of the shifter VR is connected with a local ground wire, the other end of the shifter VR is connected with the power supply end, the anode of the first indicator light LED1 is connected with the power supply end, the cathode of the first indicator light LED1 is connected with one end of the first resistor R1, the other end of the first resistor R1 is connected with the differential unit, and the AIN0 pin to the AIN5 pin of the single chip microcomputer U1 are connected with the differential unit; the difference unit is connected with a live wire L, a zero wire N, a common ground wire CGND, a starting point LGND _ SP of a local ground wire and an end point LGND _ EP of the local ground wire; a VDD pin, a PA6 pin and a VSS pin of the singlechip U1 are connected with the power supply module 133, an AIN7 pin of the singlechip U1 is connected with the input module 134, a PA5 pin of the singlechip U1 is connected with the output module 135, a PB3 pin of the singlechip U1 is connected with the anode of the second indicator light LED2, a PB2 pin of the singlechip U1 is connected with the anode of the third indicator light LED3, and the cathode of the second indicator light LED2 and the cathode of the third indicator light LED3 are connected with a local ground wire.
The model of the singlechip U1 is preferably NY8B062D, and the positioner VR is used for adjusting the sensitivity of the singlechip U1 (a manual adjusting button is arranged outside). The power supply module 133 is a power module converting ac to dc, and can provide +5V power supply voltage to the single chip microcomputer U1.
The single chip microcomputer U1 starts to work, the first indicator light LED1 is turned on (if no power supply voltage exists, the first indicator light LED is turned off), the single chip microcomputer U1 judges whether the local ground wire and the common ground wire are normally grounded according to a comparison result output by the difference unit 1321 through difference comparison, when the ground wire of the commercial power is normal, the second indicator light LED2 is turned on in green (if the local ground wire is abnormally turned on in red), and when the ground wire of the later stage is normal, the third indicator light LED3 is turned on in green (if the local ground wire is abnormally turned on. If two green lights are not lighted, the power consumption protection device 10 can only be used as a general extension socket without dangerous operation. If two green lights are on, the electric protection device 10 can be immersed in water for normal operation and has anti-creeping protection.
When concrete implementation, set up 3 transparent round windows in the front of row's socket casing, every transparent round window below is just to an pilot lamp, can convenience of customers know operating condition and ground state when the pilot lamp to like this is lighted. In order to protect the second indicator light LED2 and the third indicator light LED3, a resistor can be connected in series between the PB3 pin of the singlechip U1 and the anode of the second indicator light LED2, and a resistor can be connected in series between the PB2 pin of the singlechip U1 and the anode of the third indicator light LED3, so that protection is performed through resistor current limiting.
In the present embodiment, six high impedance differences are adopted, that is, the difference unit includes a first difference amplifier OP1, a second difference amplifier OP2, a third difference amplifier OP3, a fourth difference amplifier OP4, a fifth difference amplifier OP5 and a sixth difference amplifier OP 6; the non-inverting input end of the first differential amplifier OP1 is connected with the live line L and the non-inverting input end of the third differential amplifier OP 3; the inverting input terminal of the first differential amplifier OP1 is connected to the inverting input terminal of the second differential amplifier OP2, the inverting input terminal of the fifth differential amplifier OP5, the inverting input terminal of the sixth differential amplifier OP6 and the common ground; the output end of the first differential amplifier OP1 is connected with an AIN0 pin of the singlechip U1, the non-inverting input end of the second differential amplifier OP2 is connected with a zero line N and the inverting input end of the third differential amplifier OP3, and the output end of the second differential amplifier OP2 is connected with an AIN1 pin of the singlechip U1; the non-inverting input end of the fourth differential amplifier OP4 is connected with the non-inverting input end of the sixth differential amplifier OP6, the end point LGND _ EP of the local ground wire and the other end of the first resistor R1, the inverting input end of the fourth differential amplifier OP4 is connected with the non-inverting input end of the fifth differential amplifier OP5 and the start point LGND _ SP of the local ground wire, the output end of the third differential amplifier OP3 is connected with the AIN2 pin of the singlechip U1, the output end of the fourth differential amplifier OP4 is connected with the AIN3 pin of the singlechip U1, the output end of the fifth differential amplifier OP5 is connected with the AIN4 pin of the singlechip U1, and the output end of the sixth differential amplifier OP6 is connected with the AIN5 pin of the singlechip U1.
Wherein the first differential amplifier OP1 enables a comparison of live and neutral wires, the second differential amplifier OP2 enables a comparison of neutral and common ground wires CGND, the third differential amplifier OP3 enables a comparison of live and neutral wires, the fourth differential amplifier OP4 enables a comparison of the end LGND _ EP of the local ground wire with the start LGND _ SP of the local ground wire, the fifth differential amplifier OP5 enables a comparison of the start LGND _ SP of the local ground wire with the common ground wire CGND, and the sixth differential amplifier OP6 enables a comparison of the local ground wire LGND with the common ground wire CGND. When the switch S in the power supply module 133 is pressed, the voltage on each ground line at this time is read and the comparison result (voltage value) output by the 6 differential amplifiers is stored as the standard voltage, and if the standard voltage is greater than the voltage value at the pin AIN6, it is determined that the voltage is abnormal.
Preferably, in order to avoid burning out the single chip microcomputer by high voltage, a resistor is connected to the non-inverting input end of each differential amplifier, a resistor is connected to the inverting input end of each differential amplifier, the resistance values of the two resistors are preferably 100M Ω, and 2 high-impedance voltage-dividing resistors of 100M Ω are used for attenuation; a resistor with a value of preferably 1M Ω is connected between the non-inverting input and the inverting input. Therefore, at least 510K omega is arranged between the six-path high-impedance differential circuit and the ground, so that the damage caused by high voltage can be prevented.
The power supply module 133 comprises a power supply chip U2, a second resistor R2 and a switch SW; a VIN + pin of the power chip U2 is connected with a live wire pin L1 of the immersion contactless protector 131, the input module 134 and a live wire input end L _ IN; a VIN-pin (namely positive voltage input of alternating current) of the power chip U2 is connected with a zero line pin N1, an input module 134 and a zero line input end N _ IN of the soaking contactless protector 131; the OUT pin of the power chip U2 is connected with a power supply end (providing +5V power supply voltage), one end of the second resistor R2 and the VDD pin of the singlechip U1; the GND pin of the power chip U2 is connected with one end of a switch SW, the VSS pin of the singlechip U1 and a local ground line LGND, and the other end of the switch SW is connected with the other end of the second resistor R2 and the PA6 pin of the singlechip U1.
The switching power supply chip U2 supports 100-240V ac input, outputs 5V dc voltage after performing step-down conversion, and the switching power supply chip U2 may adopt all existing power supply modules capable of converting ac to dc 5V output, and the specific pins are modified according to the model, and the model is not limited herein. The second resistor R2 is a pull-up resistor; the switch S is normally open, when the voltage on each ground wire needs to be read, a low-level pulse signal is generated by pressing the switch S to the single chip microcomputer U1, and the single chip microcomputer U1 can read the comparison results output by the 6 differential amplifiers and compare the comparison results with the voltage value on the AIN6 pin to judge whether the grounding is abnormal or not.
The input module 134 comprises a voltage attenuator U3 (also called a mutual inductor, both frequency and voltage can be sensed) attenuated according to a ratio of 1:400 or 1:100, a 1 st pin of the voltage attenuator U3 is connected with a live wire input end L _ IN and a VIN + pin of a power chip U2, a 2 nd pin of the voltage attenuator U3 is connected with a neutral wire input end N _ IN and a VIN-pin of the power chip U2, a 3 rd pin of the voltage attenuator U3 is connected with an AIN7 pin of a singlechip U1, and a 4 th pin of the voltage attenuator U3 is connected with a local ground line LGND. The voltage attenuator U3 attenuates the input voltage (mains supply here) that the power input plug transmitted and then transmits to singlechip U1, can avoid commercial power high pressure to burn out the singlechip through the attenuation of voltage attenuator U3, can calculate current commercial voltage and frequency according to the voltage after the attenuation through the decay proportion of setting for, transmit the numerical value of calculating to display on display screen 140 and show to make things convenient for the user to know the current voltage condition.
As shown in fig. 2, the display screen 140 has a sign V (representing voltage) and a sign HZ (representing frequency), and corresponding light emitting diodes are arranged below the signs; when the voltage is displayed, the light emitting diode corresponding to the mark V is lightened to enable the mark V to emit light, and the numerical value of the voltage is displayed on the right side or the lower side of the mark V; when the frequency is displayed, the light emitting diode corresponding to the mark HZ is lightened to enable the mark HZ to emit light, and the numerical value of the frequency is displayed on the right or the lower side of the mark HZ.
The output module 135 comprises a relay, the power supply end is connected to the one end of the coil of relay, the PA5 foot of singlechip U1 is connected to the other end of the coil of relay, the 2 nd foot and the zero line input end N _ IN of voltage attenuator U3 are connected to the first common point of relay, zero line output end N _ OUT and output socket 160 are connected to the first normally open contact of relay, the 1 st foot and the live wire input end L _ IN of voltage attenuator U3 are connected to the second common point of relay, live wire output end L _ OUT and output socket 160 are connected to the second normally open contact of relay.
When the power supply end has power supply voltage, the coil of the relay is electrified to attract the two normally open contacts, the zero line input end N _ IN is connected with the zero line output end N _ OUT, the live line input end L _ IN is connected with the live line output end L _ OUT, and the output socket 160 supplies power normally. When no power supply voltage exists, the two normally open contacts are separated, the zero line input end N _ IN is disconnected with the zero line output end N _ OUT, the live line input end L _ IN is disconnected with the live line output end L _ OUT, and the output socket 160 does not have electricity. As long as the attraction of the two normally open contacts can be realized when the relay is electrified, the relay with the structure shown in figure 2 is within the protection range, and the type of the relay is not limited.
Referring to fig. 3, based on the plug-and-play power consumption protection device 10, the embodiment of the present invention further provides a socket electrical appliance, where the socket electrical appliance includes a housing, the power consumption protection device 10, a leakage protector 30, a leakage air switch 40, a plurality of parallel sockets 50, a zero row 60, a ground row 70, and a second power line are installed in the housing, and the housing is provided with a plurality of jacks matching with the sockets 50; one end of the second power line is provided with a power plug for connecting a 220V mains supply, the other end of the second power line extends into one side of the shell and is connected with the leakage protector 30 and the zero row 60, and the leakage protector 30 is connected with the leakage air switch 40; the power input plug 150 of the power consumption protection device 10 is inserted into any one of the sockets 50, the leakage air switch 40 is connected with a plurality of sockets 50, and the zero row 60 and the ground row 70 are both connected with the power consumption protection device 10.
The electric protection device 10 is divided into a protection main module 80 (in which a control module 132, a power supply module 133, an input module 134 and an output module 135 are integrated) and a water immersion contactless protector 131; the protection main module is used for current-limiting protection, can trip when the current passing through the protection main module is greater than a limiting value, and can also display the detection results of the current input voltage, frequency and grounding state; the soaking contactless protector 131 ionizes and separates the leakage current to its FG pin during leakage, and a metal sheet on the FG pin can absorb the discrete current and electrons to prevent electric shock. The earth leakage protector 30 and the earth leakage air switch 40 are earth leakage checking switches, and trip when the earth leakage current is larger than a set value.
In the implementation, as shown in fig. 4, the leakage protector 30 and the leakage air switch 40 are conventional devices, and the waterlogged contactless protector 131 may be a tpt (top Prime technology) device. The live wire of the second power line is connected to the live wire input end of the leakage protector 30, the zero line of the second power line is connected to the zero line input end of the leakage protector 30, the live wire output end of the leakage protector 30 is connected to the live wire input end of the leakage air switch 40 through the live wire, the zero line output end of the leakage protector 30 is connected to the zero line input end of the leakage air switch 40 through the zero line, the live wire output end of the leakage air switch 40 is connected to the live wire ends of the plurality of sockets 50 through the live wire, and the zero line output end of the leakage air switch 40 is connected to the zero line ends of the plurality of sockets; when the power input plug 150 of the electricity consumption protecting device 10 is inserted into any one of the sockets 50, the live wire end of the protective main module 80 and the live wire pin L1 of the water immersion contactless protector 131 are respectively connected with the live wire end of the socket 50 through the live wire, and the zero wire end of the protective main module 80 and the zero wire pin N1 of the water immersion contactless protector 131 are respectively connected with the zero wire end of the socket 50 through the zero wire; the FG pin of the submersion contactless protector 131 is connected to the ground bar 70, the ground terminal of each socket 50, and the local ground terminal of the protection main module 80 through a local ground wire; the FC pin of the submersion non-contact protector 131 is connected to the zero line 60 and the common ground of the protection block 80 through a common ground.
It is to be understood that L, N in fig. 4 represents live and neutral, respectively, representing the type of wiring between the two devices; the local ground wire has a minimum diameter of 6 mm. The power consumption protection device 10 may also be installed in a main power switch box, and the specific use environment is not limited herein.
In summary, the plug-and-play electricity protection device and the socket electrical appliance provided by the invention collect all discrete currents and electrons on the wire except for the load through the soaking contactless protector, immediately start the electric field function after collecting the currents and electrons, absorb the discrete currents and electrons back to the electric field, and then uninterruptedly return the absorbed currents and electrons to the zero line output end to be used as the supply current, so that the normal operation of soaking and the anti-creeping protection can be achieved. Because the appearance design of the power consumption protection device is a row plug type, a power input plug at one end of the power consumption protection device can be plugged into other sockets, an output socket is connected with a load, the power consumption protection device can be used directly without being installed by a professional, and the power consumption protection device is greatly convenient for a user to operate. In practical application, the output socket of the power consumption protection device can be externally connected with a coil with three cores, and the three-core coil has a very long ground wire to strengthen the anti-creeping effect.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A plug-and-play electricity utilization protection device is characterized by comprising an extension socket shell and a first power line, wherein a circuit board and a plurality of output sockets connected in parallel are arranged in the extension socket shell; the power utilization protection circuit is connected with the output socket, one end of the first power line is provided with a power input plug, and the other end of the first power line extends into one side of the extension socket shell and is connected with the power utilization protection circuit; the power utilization protection circuit collects discrete current and electrons absorbed on a local ground wire and transmits the discrete current and the electrons to an output socket, detects a grounding state and calculates the current input voltage and frequency.
2. The plug-and-play power protection device of claim 1, wherein said power strip housing further comprises a display screen on a front surface thereof for displaying input voltage and frequency, said display screen being connected to said power protection circuit.
3. The plug-and-play power protection device of claim 2, wherein said power protection circuit comprises a submersion contactless protector, a control module, a power supply module, an input module, and an output module;
the immersion contactless protector is connected with the power supply module, the input module, the output module, the shared ground wire and the local ground wire; the control module is connected with the power supply module, the input module and the output module; the input module is connected with the other end of the first power line, and the output module is connected with the output socket;
the immersion non-touch protector collects and absorbs discrete current and electrons on a local ground wire except for a load and transmits the discrete current and the electrons to the output end of a zero line;
the power supply module reduces the input voltage and converts the input voltage into direct-current power supply voltage for power supply, and the input module attenuates the input voltage according to a preset attenuation proportion and outputs the attenuated input voltage to the control module;
the control module calculates the current input voltage and frequency according to the attenuated voltage, transmits the calculated numerical value to the display screen for displaying, and detects the grounding state and carries out corresponding detection result prompting.
4. The plug-and-play power protection device of claim 3, wherein said power pin of said submersion touchless protector is connected to said power module, said input module, and said power input; the zero line pin of the immersion non-touch protector is connected with the power supply module, the input module and the zero line input end; the FC pin of the immersion contactless protector is connected with a common ground wire, and the FG pin of the immersion contactless protector is connected with a local ground wire.
5. The plug-and-play power protection device of claim 4, wherein said control module comprises a single chip, a differential unit for differentially comparing voltages on the live wire, the neutral wire, the local ground wire and the common ground wire and outputting a comparison result, a shifter, a first indicator light, a second indicator light, a third indicator light and a first resistor;
the display screen is characterized in that a PB4 pin and a PB5 pin of the single chip microcomputer are connected with the display screen, an AIN6 pin of the single chip microcomputer is connected with a sliding end of a shifter, one end of the shifter is connected with a local ground wire, the other end of the shifter is connected with a power supply end, the anode of a first indicator lamp is connected with the power supply end, the cathode of the first indicator lamp is connected with one end of a first resistor, the other end of the first resistor is connected with a differential unit, and the AIN0 pin to the AIN5 pin of the single chip microcomputer are connected with the differential unit; the difference unit is connected with a starting point of a live wire, a zero line, a common ground wire, a local ground wire and an end point of the local ground wire; VDD pin, PA6 pin and VSS pin of singlechip all connect the power module, and the AIN7 pin of singlechip is connected the input module, and PA5 pin of singlechip is connected the output module, and PB3 pin of singlechip is connected the positive pole of second pilot lamp, and PB2 pin of singlechip is connected the positive pole of third pilot lamp, and the negative pole of second pilot lamp and the negative pole of third pilot lamp all connect local ground wire.
6. The plug-and-play power protection device of claim 5, wherein said differential unit comprises a first differential amplifier, a second differential amplifier, a third differential amplifier, a fourth differential amplifier, a fifth differential amplifier, and a sixth differential amplifier;
the non-inverting input end of the first differential amplifier is connected with the live wire and the non-inverting input end of the third differential amplifier; the inverting input end of the first differential amplifier is connected with the inverting input end of the second differential amplifier, the inverting input end of the fifth differential amplifier, the inverting input end of the sixth differential amplifier and the common ground wire; the output end of the first differential amplifier is connected with an AIN0 pin of the single chip microcomputer, the non-inverting input end of the second differential amplifier is connected with a zero line and the inverting input end of the third differential amplifier, the output end of the second differential amplifier is connected with an AIN1 pin of the single chip microcomputer, the non-inverting input end of the fourth differential amplifier is connected with the non-inverting input end of the sixth differential amplifier, the terminal point of a local ground wire and the other end of the first resistor, the inverting input end of the fourth differential amplifier is connected with the non-inverting input end of the fifth differential amplifier and the starting point of the local ground wire, the output end of the third differential amplifier is connected with an AIN2 pin of the single chip microcomputer, the output end of the fourth differential amplifier is connected with an AIN3 pin of the single chip microcomputer, the output end of the fifth differential amplifier is connected with an.
7. The plug-and-play power protection device of claim 5, wherein said power module comprises a power chip, a second resistor, and a switch; the VIN + pin of the power chip is connected with the live wire pin, the input module and the live wire input end of the immersion contactless protector; the VIN-pin of the power chip is connected with the zero line pin, the input module and the zero line input end of the water immersion contactless protector; the OUT pin of the power supply chip is connected with the power supply end, one end of the second resistor and the VDD pin of the single chip microcomputer; and the GND pin of the power supply chip is connected with one end of the switch, the VSS pin of the single chip microcomputer and the local ground wire, and the other end of the switch is connected with the other end of the second resistor and the PA6 pin of the single chip microcomputer.
8. The plug-and-play power consumption protection device of claim 5, wherein said input module comprises a voltage attenuator, pin 1 of said voltage attenuator is connected to the hot input terminal and VIN + pin of the power chip, pin 2 of said voltage attenuator is connected to the neutral input terminal and VIN-pin of the power chip, pin 3 of said voltage attenuator is connected to AIN7 pin of the single chip, and pin 4 of said voltage attenuator is connected to the local ground.
9. The plug-and-play power protection device of claim 8, wherein said output module comprises a relay, one end of a coil of said relay is connected to said power supply terminal, the other end of said coil of said relay is connected to pin PA5 of said single chip microcomputer, a first common point of said relay is connected to pin 2 and neutral input terminal of said voltage attenuator, a first normally open contact of said relay is connected to said neutral output terminal and said output socket, a second common point of said relay is connected to pin 1 and said live input terminal of said voltage attenuator, and a second normally open contact of said relay is connected to said live output terminal and said output socket.
10. An electrical outlet appliance comprising a housing, said housing having mounted therein an electrical leakage protector, an electrical leakage air switch, a plurality of electrical outlets, a zero bar, a ground bar, a second power cord and a plug and play electrical protection device according to any one of claims 1 to 9;
one end of the second power line is provided with a power plug, the other end of the second power line extends into one side of the shell and is connected with the leakage protector and the zero row, and the leakage protector is connected with the leakage air switch; the power input plug of the electric protection device is inserted into any socket, the leakage air switch is connected with a plurality of sockets, and the zero row and the ground row are both connected with the electric protection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011311800.7A CN112421314A (en) | 2020-11-20 | 2020-11-20 | Plug-and-play power consumption protection device and socket electric appliance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011311800.7A CN112421314A (en) | 2020-11-20 | 2020-11-20 | Plug-and-play power consumption protection device and socket electric appliance |
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| CN112421314A true CN112421314A (en) | 2021-02-26 |
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| CN202011311800.7A Pending CN112421314A (en) | 2020-11-20 | 2020-11-20 | Plug-and-play power consumption protection device and socket electric appliance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328424A (en) * | 2021-06-04 | 2021-08-31 | 吴豪 | Intelligent electric shock prevention switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478204A (en) * | 2020-03-30 | 2020-07-31 | 深圳市三巨电机有限公司 | Protection device and distribution box with same |
| CN212366532U (en) * | 2020-03-30 | 2021-01-15 | 深圳市瑞禾高科通讯电子有限公司 | Protection device and distribution box with same |
| CN213905748U (en) * | 2020-11-20 | 2021-08-06 | 深圳市瑞禾高科通讯电子有限公司 | Plug-and-play power consumption protection device and socket electric appliance |
| CN214506055U (en) * | 2020-11-20 | 2021-10-26 | 深圳市瑞禾高科通讯电子有限公司 | Safe power switch device and block terminal of demonstration numerical value |
-
2020
- 2020-11-20 CN CN202011311800.7A patent/CN112421314A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478204A (en) * | 2020-03-30 | 2020-07-31 | 深圳市三巨电机有限公司 | Protection device and distribution box with same |
| CN212366532U (en) * | 2020-03-30 | 2021-01-15 | 深圳市瑞禾高科通讯电子有限公司 | Protection device and distribution box with same |
| CN213905748U (en) * | 2020-11-20 | 2021-08-06 | 深圳市瑞禾高科通讯电子有限公司 | Plug-and-play power consumption protection device and socket electric appliance |
| CN214506055U (en) * | 2020-11-20 | 2021-10-26 | 深圳市瑞禾高科通讯电子有限公司 | Safe power switch device and block terminal of demonstration numerical value |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328424A (en) * | 2021-06-04 | 2021-08-31 | 吴豪 | Intelligent electric shock prevention switch |
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