CN109904663B - A socket component based on electromagnetic induction - Google Patents

Abstract

The invention provides a holeless socket based on electromagnetic induction and a conversion plug matched thereto. The socket cavity of the holeless socket is provided with an electromagnet I, an electromagnetic induction coil I and a socket circuit board; the socket circuit board is composed of a voltage conversion module, It consists of a single-chip microcomputer, a solid-state relay and a Hall sensor; the mains power, voltage conversion module, single-chip microcomputer, solid-state relay, electromagnetic induction coil I and electromagnet I are connected in sequence; the solid-state relay is also connected to the mains power; the Hall sensor is connected to the single-chip microcomputer; the plug cavity The body is equipped with a permanent magnet, a plug circuit board, an electromagnetic induction coil II and an electromagnet II; the permanent magnet is installed on the plug panel; the electromagnetic induction coil II, the electromagnet II and the electrical equipment are respectively connected to the plug circuit board; the electromagnetic induction coil II and electromagnet II are connected in series, and electromagnetic induction coil II supplies power to the electrical equipment through electromagnet II and the plug circuit board. The invention uses the Hall sensor to make the microcontroller run/sleep, thereby reducing energy consumption and cost.

Description

A socket component based on electromagnetic induction

Technical field

The present invention relates to the field of sockets, and in particular to a holeless socket based on electromagnetic induction, and a conversion plug used in conjunction with the holeless socket.

Background technique

The most important function of the socket is to provide continuous and stable voltage to electrical equipment. When ensuring the normal operation of electrical equipment, human life safety is the most important thing to pay attention to. Sockets with holes will make it easy for children to come into contact with the socket when adults are not paying attention. Children are more likely to remove small ones out of curiosity. Insertion of iron objects may cause electric shock. The sockets currently on the market are all designed with holes: two-hole live wire, neutral wire and three-hole live wire, neutral wire and ground wire. It is precisely because of the open hole design that there may be a risk of electric shock after contact during use, as well as accidents such as short circuit and fire caused by splashing water. Although some high-end sockets with holes are currently designed to be waterproof, this only increases the probability of waterproofing, and there are hidden dangers when used in bathrooms and other environments. Later, someone proposed an electromagnetic induction socket based on the principle of electromagnetic induction. However, after the electromagnetic field lost the constraints of conductors and magnets, it became an open form and radiated to the surroundings, greatly reducing the efficiency of power transmission.

In order to solve the above problems, a holeless socket is proposed in the prior art, as shown below:

The invention with patent number 201120366731. The distribution of magnetic field lines of independent air-core coils on the coil plane is basically uniform; the closer to the coil, the denser the magnetic field lines, the higher the magnetic field intensity; the further away from the coil, the sparser the magnetic field lines, the smaller the magnetic field intensity. To limit the degree of electromagnetic interference, a longitudinal magnetic field coupling method is adopted. For the magnetic field radiated by an air-core coil with a radius R, the magnetic induction intensity B at a distance x from the coil can be calculated by the formula. As the distance x increases, the magnetic induction intensity attenuates. soon. When the distance x is relatively small, more magnetic field coupling can be obtained and the power transmission power is improved. Although effective transmission of electric energy is achieved in this way, when its internal control circuit converts electric energy into pulsed magnetic field energy, its magnetic field radiation coil keeps running while it is powered on, which increases standby power consumption. Moreover, when the electrical equipment is connected to the socket and is not turned on, the internal control circuit will continue to convert electrical energy into pulse magnetic field energy, consuming the electrical energy in the magnetic field. The occurrence of this problem will make the socket an invisible device that consumes a lot of power.

The invention with application number 201710265330.7 is "A porous socket and a toothless connector matched with the holeless socket". This invention relates to a holeless socket and a toothless connector matched with the holeless socket. The holeless socket includes a socket shell. and a first conductive metal piece, an iron core, a wire, and an elastic reset mechanism. The first conductive metal piece is exposed on the surface of the socket shell, the iron core is located inside the socket shell, the iron core is welded to the wire, and the elastic reset mechanism is fixed. Located inside the socket shell, the first conductive metal piece and the iron core can be contacted and electrically connected under the elastic compression of the elastic reset mechanism. The toothless joint includes a joint housing, a second conductive metal sheet, a permanent magnet, and a wire. The second conductive metal sheet is exposed on the surface of the joint housing. The second conductive metal sheet is welded to the wire, and the permanent magnet is fixed on the joint housing. Inside, the permanent magnet is located on one side of the second conductive metal piece; the shape and surface area of the first conductive metal piece and the second conductive metal piece remain consistent. However, since this invention adopts an elastic reset mechanism, the first conductive metal piece and the iron core can come into contact and achieve electrical connection under the elastic compression of the elastic reset mechanism. This patent is based on a mechanical mechanism design. Under frequent use conditions, the transmitting module and the receiving device cannot effectively contact each other, resulting in poor power supply to electrical equipment through electromagnetic coupling, or the upper limit of the number of uses may be easily reached. Will have lost its elasticity and the function of using the electrical socket will fail.

The invention with application number 201410082337.1, "A Porous Socket and Its Internal Circuit and Method for Implementing a Porous Socket to Power Electrical Equipment", has the disadvantage of electromagnetic interference and does not direct the electromagnetic field signal toward the receiving coil, reducing the the received power.

In summary, further improvements to the existing technology are needed.

Contents of the invention

The technical problem to be solved by the present invention is to propose a holeless socket based on electromagnetic induction with low energy consumption, and also to propose a conversion plug used in conjunction with the holeless socket.

In order to solve the above technical problems, the present invention proposes a porous socket based on electromagnetic induction and a conversion plug matched with it; the non-porous socket is connected to the mains; the non-porous socket includes a socket panel and a socket shell, and the socket panel and The socket shell is enclosed to form a socket cavity; the conversion plug is connected to the electrical equipment; the conversion plug includes a plug shell and a plug panel, and the plug shell and the plug panel are enclosed to form a plug cavity;

The socket cavity is provided with an electromagnet I, an electromagnetic induction coil I and a socket circuit board;

The socket circuit board is composed of a voltage conversion module, a microcontroller, a solid-state relay and a Hall sensor;

The mains, voltage conversion module, microcontroller, solid state relay, electromagnetic induction coil I and electromagnet I are connected in sequence;

The solid state relay is also connected to the mains power;

The Hall sensor is connected to the microcontroller;

The plug cavity is provided with a permanent magnet, a plug circuit board, an electromagnetic induction coil II and an electromagnet II;

The permanent magnet is installed on the plug panel;

The electromagnetic induction coil II, electromagnet II and electrical equipment are respectively connected to the plug circuit board;

The electromagnetic induction coil II and the electromagnet II are connected in series, and the electromagnetic induction coil II supplies power to the electrical equipment through the electromagnet II and the plug circuit board.

As an improvement of the present invention's holeless socket based on electromagnetic induction and its matching conversion plug:

The permanent magnet is used to send magnetic induction signals;

The Hall sensor is used to detect the magnetic induction signal sent by the permanent magnet, and control the microcontroller to work/sleep based on the detection results;

The single-chip microcomputer is used to control the on-off of the solid-state relay, thereby controlling the mains power to supply power to the electromagnetic induction coil I and the electromagnet I through the solid-state relay.

As a further improvement of the present invention's electromagnetic induction-based non-hole socket and its matching conversion plug:

At least one light-emitting diode is also provided in the plug cavity;

The plug panel is provided with light-transmitting holes II corresponding to the light-emitting diodes;

The plug circuit board is composed of a bimetal sheet and a transformer step-down module;

The input end of the transformer step-down module and the electrical equipment are respectively connected in parallel at both ends of the electromagnetic induction coil II, the electromagnet II and the bimetallic sheet that are connected in series;

Each LED is connected in parallel across the output of the transformer step-down module.

As a further improvement of the present invention's electromagnetic induction-based non-hole socket and its matching conversion plug:

The transformer step-down module is composed of the primary winding L1 of the transformer, the secondary winding L2 of the transformer, a rectifier bridge, a capacitor C and a resistor R;

The primary winding L1 of the transformer is connected in parallel at both ends of the electromagnetic induction coil II, the electromagnet II and the bimetallic sheet which are connected in series;

The secondary winding L2 of the transformer is connected to the input end of the rectifier bridge;

The capacitor C, resistor R and each light-emitting diode are respectively connected in parallel at both ends of the rectifier bridge output end;

The secondary winding L2 of the transformer corresponds to the primary winding L1 of the transformer.

As a further improvement of the present invention's electromagnetic induction-based non-hole socket and its matching conversion plug:

The socket panel is provided with a light-transmitting hole I corresponding to the light-transmitting hole II;

The socket cavity is provided with a photosensitive sensor corresponding to the light-transmitting hole I;

The photosensitive sensor is connected to the microcontroller;

The photosensitive sensor is used to detect and collect the light signal corresponding to the light-emitting diode, and send the collected light signal to the microcontroller;

The single-chip microcomputer receives the light signal sent by the photosensitive sensor 35, and controls the on-off state of the solid-state relay according to the light signal, thereby controlling the mains power to supply power to the electromagnetic induction coil I and the electromagnet I through the solid-state relay.

As a further improvement of the present invention's electromagnetic induction-based non-hole socket and its matching conversion plug:

The electromagnet II is a cylindrical electromagnet;

The electromagnetic induction coil II is set on the outer surface of the electromagnet II, and the light-emitting diodes are evenly distributed on one end of the electromagnetic induction coil II close to the plug panel;

The height of the electromagnet II is equal to the total height of the electromagnetic induction coil II and the light-emitting diode.

One end of the electromagnet II is in contact with the bottom surface of the plug shell through the plug circuit board, and the other end is in contact with the plug panel.

As a further improvement of the present invention's electromagnetic induction-based non-hole socket and its matching conversion plug:

The socket cavity is also provided with an insulating panel and a fixed cylinder;

The electromagnet I is a circular electromagnet, which is installed on the socket panel;

The insulating panel is disc-shaped, and the electromagnet I is set on the outer surface of the insulating panel;

The electromagnetic induction coil I is set on the outer surface of the fixed cylinder, and the electromagnetic induction coil I is flush with both ends of the fixed cylinder;

One end of the packaged electromagnetic induction coil I and the fixed cylinder is in contact with the socket panel through the insulating panel, and the other end is in contact with the socket circuit board;

Each light sensor is installed on the side close to the socket panel;

The socket circuit board is installed on the bottom surface of the socket shell.

As a further improvement of the present invention's electromagnetic induction-based non-hole socket and its matching conversion plug:

The socket shell is a metal shell.

In view of the existing technology, the technical advantages of the present invention are:

The invention is suitable for places with a lot of water, such as toilets and bathrooms. Through the design of the non-hole socket, it can effectively prevent water leakage and electric shock from the socket and ensure the life safety of users.

The conversion plug provided by the present invention is connected to the non-hole socket through magnetic fixation (electromagnet I and electromagnet II). This connection method can not only provide continuous and stable electric energy, but also easily connect the electrical cord when the electrical cord is pulled. Disengage the connected conversion plug from the non-hole socket, effectively preventing users from tripping over electrical cords.

The socket shell of the present invention adopts a metal shell. The socket shell covers the inside of the wall of the non-porous socket and connects the shell to the bottom wire, which effectively reduces electromagnetic interference, concentrates the electromagnetic field transmission direction, and increases the electric power.

Through the design of the plug end circuit, the circuit of the present invention can disconnect the circuit when encountering a short circuit of the electrical equipment to avoid burning the circuit and causing a fire.

By designing the microcontroller in the non-hole socket, the present invention enables the non-hole socket to switch between sleep mode and operating mode. When the conversion plug is not fixed on the non-hole socket to draw power, the non-hole socket starts to sleep, thus Reduce resource consumption and reduce costs.

The present invention controls the on-off of the solid-state relay through a single-chip microcomputer, and controls the electromagnet I and the electromagnetic induction coil I to receive electricity/mains power. That is, it uses weak points to control strong electricity. Compared with the existing technology that uses an elastic reset mechanism to control the on-off of the circuit. , has a longer life, can avoid the occurrence of arcs, and improves safety.

Description of drawings

The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Figure 1 is a schematic cross-sectional view of an intelligently controlled non-hole socket based on electromagnetic induction according to the present invention and a conversion plug matching it;

Figure 2 is an exploded view of the holeless socket in Figure 1;

Figure 3 is a module schematic diagram of the socket circuit board 16 in Figure 2;

Figure 4 is a pin diagram of the microcontroller 32 in Figure 3;

Figure 5 is an exploded view of the conversion plug in Figure 1;

Figure 6 is a circuit schematic diagram of the plug circuit board 23 of Figure 5;

FIG. 7 is a working flow chart of the electromagnetic induction-based non-hole socket and the matching conversion plug according to the present invention.

Implementation

The present invention will be further described below with reference to specific embodiments, but the protection scope of the present invention is not limited thereto.

Embodiment 1. A holeless socket based on electromagnetic induction and a conversion plug matching it. As shown in Figures 1 to 7, the holeless socket is connected to the mains, and the conversion plug is connected to the electrical equipment. During the power drawing process, the conversion plug It is magnetically fixed on the surface of the non-porous socket and supplies power to electrical equipment through electromagnetic conversion.

The holeless socket includes a socket housing. As shown in FIG. 2 , the socket housing is composed of a socket panel 11 and a socket shell 17 . The socket panel 11 and the socket shell 17 enclose a socket cavity.

In this embodiment, the socket shell 17 is made of metal, thereby effectively reducing electromagnetic interference, concentrating the electromagnetic field transmission direction, and increasing electric power.

The socket panel 11 is provided with at least one light-transmitting hole I18, two in this embodiment;

The socket cavity is provided with an electromagnet I12, an insulating panel 13, a fixed cylinder 14, an electromagnetic induction coil I15 and a socket circuit board 16;

The electromagnet I12 is a circular electromagnet, which is located at the top of the socket cavity and installed on the socket panel 11;

The insulating panel 13 is disc-shaped, and its diameter is the same as the inner diameter of the electromagnet I12;

The electromagnet I12 is set on the outer surface of the insulating panel 13 and completely covers the outer wall of the insulating panel 13. That is, the thickness of the electromagnet I12 is greater than or equal to the thickness of the insulating panel 13. In this embodiment, the thickness of the electromagnet I12 is greater than the thickness of the insulating panel 13. thickness.

One end of the insulating panel 13 is in contact with the socket panel 11, and the other end is in contact with the fixed cylinder 14 and the electromagnetic induction coil I15; a photosensitive sensor 35 corresponding to the light-transmitting hole I18 is provided on the side of the insulating panel 13 close to the socket panel 11. , the photosensitive sensor 35 can monitor and collect the light signal irradiated on it through the light-transmitting hole I18.

The electromagnetic induction coil I15 is set on the outer surface of the fixed cylinder 14. The height of the electromagnetic induction coil I15 is equal to that of the fixed cylinder 14, that is, the two ends of the electromagnetic induction coil I15 and the fixed cylinder 14 are flush.

One end of the packaged electromagnetic induction coil I15 and the fixed cylinder 14 is in contact with the insulating panel 13, and the other end is in contact with the socket circuit board 16;

The socket circuit board 16 is located at the bottom of the top of the socket cavity and is installed on the bottom surface of the socket shell 17;

The socket circuit board 16 is electrically connected to the power supply (ie, mains power), the electromagnetic induction coil I15, the electromagnet I12 and each photosensitive sensor 35;

The socket circuit board 16 is composed of a voltage conversion module 31, a microcontroller 32, a solid-state relay 33 and a Hall sensor 34;

As shown in Figure 3, the voltage conversion module 31, the microcontroller 32, the solid-state relay 33, the electromagnetic induction coil I15, and the electromagnet I12 are connected in sequence;

The mains power is connected to the voltage conversion module 31. The voltage conversion module 31 converts the voltage input from the mains power (such as 220V) into voltages (such as 3.3V and 5V) available for the microcontroller 32, solid-state relay 33, Hall sensor 34 and each photosensitive sensor 35. ), thereby supplying power to the microcontroller 32, solid-state relay 33, Hall sensor 34 and each photosensitive sensor 35;

Each photosensitive sensor 35 and Hall sensor 34 are connected to the single-chip microcomputer 32;

The solid state relay 33 is also connected to the mains;

The mains power supplies power to the electromagnetic induction coil I15 and the electromagnet I12 through the solid-state relay 33;

The Hall sensor 34 is used to detect the magnetic induction signal, and send a switch signal/disconnect signal to the microcontroller 32 according to the detected magnetic induction signal, thereby waking up the microcontroller 32 to work/sleep;

When the Hall sensor 34 detects the magnetic induction signal, it sends a switch signal to the microcontroller 32, and the microcontroller 32 starts/maintains the running mode;

When the Hall sensor 34 does not detect the magnetic induction signal, a disconnect signal is sent to the microcontroller 32, and the microcontroller 32 starts/maintains the sleep mode;

The photosensitive sensor 35 is used to collect light signals and send the collected light signals to the microcontroller 32;

The single chip microcomputer 32 is used to control the on and off of the solid state relay 33 according to the received optical signal;

When the solid-state relay 33 is turned on, the mains power supplies power to the electromagnetic induction coil I15 and the electromagnet I12 through the solid-state relay 33;

When the solid state relay 33 is disconnected, the electromagnetic induction coil I15 and the electromagnet I12 lose power;

Solid state relay 33 is an existing technology. It relies on the electromagnetic and optical characteristics of semiconductor devices and electronic components to complete its isolation and relay switching functions. It is a relay without machinery and does not contain moving parts, but has a connecting circuit and an electromagnetic relay. Essentially the same function, the present invention uses the solid state relay 33 to control the on and off of the circuit, thereby extending the life of the non-hole socket. Moreover, mechanical switches may generate arcs at the moment of switching on and off, increasing the probability of accidents. The use of solid-state relays 33 can effectively avoid the occurrence of arcs and improve safety.

In this embodiment, the microcontroller 32 is a microcontroller model STM32F103, and its pin diagram is shown in Figure 4;

PB1 of the microcontroller 32 is connected to the Hall sensor 34 , PB0 is connected to the solid state relay 33 , and PA7 is connected to each photosensitive sensor 35 .

Note: The connection relationship of other pins of the single-chip microcomputer 32 belongs to the existing technology. The connection is only for the normal operation of the single-chip computer 32 and does not affect the invention of the present invention. The connection relationship of each pin of the single-chip computer 32 is shown in Figure 4. Persons skilled in the relevant fields can easily reproduce the present invention based on Figure 4, so the present invention only introduces PB1, PBO and PA7 in detail.

PB1 is used to receive the switch signal/disconnect signal sent by the Hall sensor 34. When the single-chip computer 32 receives the switch signal, the single-chip computer 32 starts/remains running. When the single-chip computer 32 receives the disconnect signal, the single-chip computer 32 starts/remains dormant. .

PA7 is used to receive the light signals sent by each photosensitive sensor 35; when the microcontroller 32 is running, it will control the on and off of the solid state relay 33 through PB0 according to the received light signals.

A universal plug mated to the above-mentioned holeless socket includes a plug housing;

As shown in FIG. 5 , the plug housing is composed of a plug housing 21 and a plug panel 22 , and the plug housing 21 and the plug panel 22 enclose a plug cavity.

The plug cavity is provided with a permanent magnet 28, a plug circuit board 23, an electromagnetic induction coil II 24, a light emitting diode 25 and an electromagnet II 26;

The permanent magnet 28 is fixed on the plug panel 22. The permanent magnet 28 is used to send a magnetic induction signal to the Hall sensor 34 in the non-hole socket when the conversion plug takes power, so that the Hall sensor 34 wakes up the microcontroller 32 to work, so It is installed on the plug panel 22 and can make the Hall sensor 34 wake up the microcontroller 32 when the conversion plug takes power without limiting its location.

In this embodiment, the electromagnet II 26 is a cylindrical electromagnet with large ends and a small center, and its height is equal to the total height of the electromagnetic induction coil II 24 and the light emitting diode 25 .

The plug circuit board 23 is located at the bottom of the plug cavity and abuts against the bottom surface of the plug housing 21;

One end of the electromagnet II 26 is in contact with the plug circuit board 23, and the other end is in contact with the plug panel 22;

The electromagnetic induction coil II 24 is set on the outer surface of the electromagnet II 26, and the light emitting diodes 25 are evenly distributed at one end of the electromagnetic induction coil II 24 close to the plug panel 22;

In this embodiment, two light-emitting diodes 25 are used, and the two light-emitting diodes 25 are respectively located on both sides of the electromagnet II 26;

One end of the electromagnetic induction coil II 24 is in contact with the plug circuit board 23, and the other end is in contact with the plug panel 22 through the light emitting diode 25;

The plug panel 22 is also provided with two light-transmitting holes II 27 corresponding to the light-emitting diodes 25. The light-transmitting holes II 27 are formed by embedding light-transmitting materials such as glass and plastic into the plug panel 22;

The light-transmitting hole II 27 corresponds to the light-emitting diode 25 one-to-one, and the light-transmitting hole I 18 corresponds to the light-transmitting hole II 27 one-to-one; when the conversion plug is fixed on the non-hole socket to draw power, when the light-emitting diode 25 emits light, the light will The light is irradiated through the light-transmitting hole II27 and the light-transmitting hole I18 in sequence on the photosensitive sensor 35 provided on the insulating panel 13, so that the photosensitive sensor 35 detects and collects the light signal.

The power cord of the electrical equipment passes through the plug shell 21 and is electrically connected to the plug circuit board 23;

The plug circuit board 23 is electrically connected to the electromagnetic induction coil II 24, the light emitting diode 25 and the electromagnet II 26 respectively;

The number of light-emitting diodes 25 is at least one. In this embodiment, two light-emitting diodes 25 are used.

As shown in Figure 6, the plug circuit board 23 is composed of a connected bimetal piece 231 and a transformer step-down module;

The bimetal piece 231 is used for short circuit protection. When the current passing through the bimetal piece 231 is too large, the bimetal piece 231 will deform and break the circuit.

The transformer step-down module is used to step down the electromagnetic induction pulse generated by the electromagnetic induction coil II 24 and then supply power to the light-emitting diode 25;

Each light-emitting diode 25 is connected in parallel at both ends of the output end of the transformer step-down module;

That is, the electromagnetic induction pulse generated by the electromagnetic induction coil II 24 enters the transformer step-down module through the input end of the transformer step-down module for step-down voltage, and is then transmitted to each light-emitting diode 25 from the output end of the transformer step-down module to provide power to the light-emitting diode 25 .

The transformer step-down module consists of the primary winding L1 of the transformer, the secondary winding L2 of the transformer, the rectifier bridge, the capacitor C and the resistor R;

The primary winding L1 of the transformer and the electrical equipment are respectively connected in parallel at both ends of the electromagnetic induction coil II 24, the electromagnet II 26 and the bimetal piece 231 which are connected in series.

That is, both ends of the primary winding L1 of the transformer are connected to the electrical equipment respectively. At the same time, one end of the primary winding L1 of the transformer is connected to the other end of the primary winding L1 of the transformer through the electromagnetic induction coil II 24, the electromagnet II 26 and the bimetal piece 231. ;

The secondary winding L2 of the transformer corresponds to the primary winding L1 of the transformer;

The secondary winding L2 of the transformer is connected to the input end of the rectifier bridge;

The capacitor C, the resistor R, and each light-emitting diode 25 (as shown by the LED in Figure 6, when there are multiple light-emitting diodes 25, each light-emitting diode 25 is connected in parallel) are connected in parallel at both ends of the rectifier bridge output;

As shown in Figure 7, the specific working contents of the above-mentioned electromagnetic induction-based holeless socket and its matching conversion plug are as follows:

Initial state:

Holeless socket end:

The voltage conversion module 31 converts the AC voltage of 220V from the mains into DC voltages of 5V and 3.3V, and leads out VCC and grounding GND to supply to the microcontroller 32, solid-state relay 33, Hall sensor 34 and each photosensitive sensor 35;

The Hall sensor 34 does not detect the magnetic induction signal from the outside. At this time, the Hall sensor 34 sends a disconnect signal to PB1 of the microcontroller 32, and the microcontroller 32 remains in the sleep mode.

The solid-state relay 33 is in the initial state and is in the disconnected state, so the electromagnetic induction coil I15 and the electromagnet I12 are in a de-energized state;

Conversion plug end: power-off state.

2. Get electricity: When the electrical equipment needs to be connected to the power supply, fit the plug panel 22 and the socket panel 17 (the light-transmitting hole II27 corresponds to the light-transmitting hole I18);

Holeless socket end:

The Hall sensor 34 detects the magnetic induction signal from the outside, that is, the Hall sensor 34 detects the permanent magnet 28 in the conversion plug end. At this time, the Hall sensor 34 sends the switch signal to PB1 of the single-chip computer 32, and the single-chip computer 32 changes from the sleep mode to Convert to run mode.

PB0 of the single-chip microcomputer 32 outputs a signal to the solid-state relay 33, causing the solid-state relay 33 to connect the circuit. At this time, the city power supplies power to the electromagnetic induction coil I15 and the electromagnet I12 through the solid-state relay 33;

The electromagnetic induction coil I15 is energized and emits electromagnetic induction pulses;

Electromagnet Ⅰ12 is energized to generate suction.

Conversion plug end:

The electromagnetic induction coil II24 receives the electromagnetic induction pulse emitted by the electromagnetic induction coil I15 and generates a corresponding induced current;

The induced current supplies power to the electrical equipment, electromagnet II26 and primary winding L1 of the transformer respectively;

Electromagnet II26 is energized to generate suction;

The primary winding L1 of the transformer is energized and emits electromagnetic induction pulses;

The secondary winding L2 of the transformer receives the electromagnetic induction pulse emitted by the primary winding L1 of the transformer and generates a corresponding induced current. The induced current is rectified by the rectifier bridge and charges the capacitor C and also supplies power to each light-emitting diode 25. At this time, each light-emitting diode 25 glow.

3. Electrical equipment operates normally:

Conversion plug end:

Each light-emitting diode 25 continues to emit light, and the light passes through the light-transmitting hole II 27 and the light-transmitting hole I 18 in turn and irradiates the photosensitive sensor 35 provided on the insulating panel 13 .

Holeless socket end:

The Hall sensor 34 sends the switching signal to PB1 of the microcontroller 32, and the microcontroller 32 maintains the running mode;

Each photosensitive sensor 35 sends the detected light signal (light) to PA7 of the single-chip computer 32. The single-chip computer 32 controls the solid-state relay 33 through PB0 to keep the circuit connected according to the received light signal. The electromagnetic induction coil I15 and the electromagnet I12 are Powered state.

4. Short circuit of electrical equipment:

Conversion plug end:

When the electrical equipment is in a short-circuit state, the current passing through the bimetal piece 231 is too large, causing the bimetal piece 231 to deform and thus disconnect the circuit. At this time, the electrical equipment, the electromagnet II 26 and the primary winding L1 of the transformer all lose power.

Since the primary winding L1 of the transformer loses power, the secondary winding L2 of the transformer cannot generate an induced current, and the capacitor C begins to discharge, thereby supplying power to the light-emitting diode 25 (only for a few seconds);

The light-emitting diode 25 loses power and goes out.

Holeless socket end:

The Hall sensor 34 sends the switching signal to PB1 of the microcontroller 32, and the microcontroller 32 maintains the running mode;

Each photosensitive sensor 35 sends the detected light signal (no light) to PA7 of the single-chip computer 32. The single-chip computer 32 controls the solid-state relay 33 to open the circuit through PB0 according to the received light signal. The electromagnetic induction coil I15 and the electromagnet I12 are inactive. power status.

Since both electromagnet II 26 and electromagnet II 26 are de-energized, the conversion plug cannot be fixed on the non-hole socket and falls off due to gravity.

5. Power outage, the conversion plug is separated from the non-hole socket due to human factors, short circuit and other reasons;

Conversion plug end: power-off state;

Non-hole socket end: The Hall sensor 34 does not detect the magnetic induction signal from the outside. At this time, the Hall sensor 34 sends a disconnect signal to PB1 of the microcontroller 32, and the microcontroller 32 changes from the running mode to the sleep mode.

The solid-state relay 33 is in an initial state and is in a disconnected state, and the electromagnetic induction coil I15 and the electromagnet I12 are in a de-energized state.

Finally, it should also be noted that the above enumerations are only several specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many modifications are possible. All modifications that a person of ordinary skill in the art can directly derive or associate from the disclosure of the present invention should be considered to be within the protection scope of the present invention.

Claims (3)

1. A socket assembly based on electromagnetic induction comprises a non-porous socket based on electromagnetic induction and a conversion plug matched with the non-porous socket; the nonporous socket is connected with the mains supply; the nonporous socket comprises a socket panel (11) and a socket shell (17), and the socket panel (11) and the socket shell (17) are surrounded to form a socket cavity; the switching plug is connected with the electric equipment, and in the power taking process, the switching plug is fixed on the surface of the nonporous socket through magnetic force and supplies power to the electric equipment through electromagnetic conversion; the conversion plug comprises a plug shell (21) and a plug panel (22), wherein the plug shell (21) and the plug panel (22) are surrounded to form a plug cavity;

the method is characterized in that:

an electromagnet I (12), an electromagnetic induction coil I (15) and a socket circuit board (16) are arranged in the socket cavity;

the socket circuit board (16) is composed of a voltage conversion module (31), a singlechip (32), a solid-state relay (33) and a Hall sensor (34);

the commercial power, the voltage conversion module (31), the singlechip (32), the solid-state relay (33), the electromagnetic induction coil I (15) and the electromagnet I (12) are sequentially connected;

the solid state relay (33) is also connected with the mains supply;

the Hall sensor (34) is connected with the singlechip (32);

the plug cavity is internally provided with a permanent magnet (28), a plug circuit board (23), an electromagnetic induction coil II (24) and an electromagnet II (26);

the permanent magnet (28) is arranged on the plug panel (22);

the electromagnetic induction coil II (24), the electromagnet II (26) and the electric equipment are respectively connected with the plug circuit board (23);

the electromagnetic induction coil II (24) is connected with the electromagnet II (26) in series, and the electromagnetic induction coil II (24) supplies power to electric equipment through the electromagnet II (26) and the plug circuit board (23);

the permanent magnet (28) is used for sending magnetic induction signals;

the Hall sensor (34) is used for detecting magnetic induction signals sent by the permanent magnet (28) and controlling the singlechip (32) to work/sleep according to the detection result;

the singlechip (32) is used for controlling the on-off of the solid-state relay (33), so as to control the mains supply to supply power to the electromagnetic induction coil I (15) and the electromagnet I (12) through the solid-state relay (33);

at least one light emitting diode (25) is also arranged in the plug cavity;

the plug panel (22) is provided with light holes II (27) which are in one-to-one correspondence with the light emitting diodes (25);

the plug circuit board (23) is composed of a bimetallic strip (231) and a transformer step-down module;

the input end of the transformer step-down module and the electric equipment are respectively connected in parallel with two ends of an electromagnetic induction coil II (24), an electromagnet II (26) and a bimetallic strip (231) which are sequentially connected in series;

each light emitting diode (25) is connected in parallel at two ends of the output end of the transformer step-down module;

the transformer step-down module consists of a primary winding L1 of a transformer, a secondary winding L2 of the transformer, a rectifier bridge, a capacitor C and a resistor R;

the primary winding L1 of the transformer is connected in parallel with two ends of an electromagnetic induction coil II (24), an electromagnet II (26) and a bimetallic strip (231) which are sequentially connected in series;

the secondary winding L2 of the transformer is connected with the input end of the rectifier bridge;

the capacitor C, the resistor R and the light emitting diodes (25) are respectively connected in parallel at two ends of the output end of the rectifier bridge;

the secondary winding L2 of the transformer corresponds to the primary winding L1 of the transformer;

the socket panel (11) is provided with light holes I (18) which are in one-to-one correspondence with the light holes II (27);

the socket cavity is internally provided with photosensitive sensors (35) which are in one-to-one correspondence with the light holes I (18);

the photosensitive sensor (35) is connected with the singlechip (32);

the photosensitive sensor (35) is used for detecting and collecting optical signals corresponding to the light emitting diodes (25) and sending the collected optical signals to the singlechip (32);

the singlechip receives an optical signal sent by the photosensitive sensor (35) and controls the on-off of the solid-state relay (33) according to the optical signal, so that the mains supply is controlled to supply power to the electromagnetic induction coil I (15) and the electromagnet I (12) through the solid-state relay (33);

the socket housing (17) is a metal housing.

2. An electromagnetic induction based jack assembly according to claim 1, wherein:

the electromagnet II (26) is a cylindrical electromagnet;

the electromagnetic induction coil II (24) is sleeved on the outer surface of the electromagnet II (26), and the light emitting diodes (25) are uniformly distributed at one end, close to the plug panel (22), of the electromagnetic induction coil II (24);

the height of the electromagnet II (26) is equal to the total height of the electromagnetic induction coil II (24) and the light-emitting diode (25);

one end of the electromagnet II (26) is abutted with the bottom surface of the plug shell (21) through the plug circuit board (23), and the other end is abutted with the plug panel (22).

3. An electromagnetic induction based jack assembly according to claim 2, wherein:

an insulating panel (13) and a fixed cylinder (14) are also arranged in the socket cavity;

the electromagnet I (12) is an annular electromagnet and is arranged on the socket panel (11);

the insulating panel (13) is disc-shaped, and the electromagnet I (12) is sleeved on the outer surface of the insulating panel (13);

the electromagnetic induction coil I (15) is sleeved on the outer surface of the fixed cylinder (14), and the electromagnetic induction coil I (15) is flush with the two ends of the fixed cylinder (14);

one end of the electromagnetic induction coil I (15) and one end of the fixed cylinder (14) which are sleeved are abutted with the socket panel (11) through the insulating panel (13), and the other end of the electromagnetic induction coil I and the fixed cylinder are abutted with the socket circuit board (16);

each photosensitive sensor (35) is arranged on one surface close to the socket panel (11);

the socket circuit board (16) is mounted on the bottom surface of the socket housing (17).