CN209913164U

CN209913164U - Safe power supply identification device for power supply connector

Info

Publication number: CN209913164U
Application number: CN201921112194.9U
Authority: CN
Inventors: 刘硕
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-01-07
Anticipated expiration: 2029-07-16

Abstract

The utility model discloses a safe power supply recognition device for power supply connector, include with the plug can dismantle the identification means of being connected and set up the recognition circuit in the socket, do recognition circuit provides the power and the processing circuit of power and the main circuit of intercommunication plug and socket, be equipped with the main switch on the main circuit, the main switch is in recognition circuit is closed when switching on. The safe power supply recognition device can effectively avoid electric shock and electric leakage accidents.

Description

Safe power supply identification device for power supply connector

Technical Field

The utility model relates to a connector technical field, concretely relates to safe power supply recognition device for supplying power connector.

Background

Power connectors are used in a wide variety of applications, almost every type of electrical appliance, and typically include plugs and sockets. However, the power connectors used at present are dangerous. When the socket is empty, the socket hole is still electrified, and if a conductive object is inserted by mistake, electric shock or short circuit accidents are easily caused. At present, the state provides that an anti-electric-shock door is required to be installed on a jack of a power socket, so that accidents are avoided, but other defects are brought, such as labor consumption and easy damage of plugging and unplugging plugs, and the anti-electric-shock door can still be opened when a conductive object is plugged into the power socket from two holes at the same time, so that short circuit or electric shock accidents are caused. Moreover, the electric shock prevention door is not damp-proof, short-circuit accidents are still easy to happen due to wetting and water immersion, and electric shock accidents are caused by the fact that fingers touch pins of the plug carelessly when the plug is inserted or pulled by half. Therefore, the method of installing the electric shock preventing door is not a good method.

In view of these problems, some safety connectors have been proposed in recent years, and as disclosed in application No. 201210148779.2, there is provided an electrical leakage preventing method and an electrical leakage preventing connector including two connecting units to be connected, each of the connecting units including a conductor and an insulating unit, and at least one of the connecting units having a switching unit therein, the insulating units of the two connecting units being in contact with each other to form a closed insulating space in which an external conductive medium is isolated from the conductor, the switching unit, and the contact unit inside. Also, for example, application No. 201620764069.6 discloses an electrical connection device with a sealing mechanism, which includes a connection seat with an electrical connection hole, wherein a conductor part is arranged in the connection seat, and the sealing mechanism is arranged in the electrical connection hole to isolate the conductor from the outside of the connection seat; the connecting conductor matched with the connecting seat can push the sealing mechanism to open the connecting hole, so that the connecting conductor is electrically contacted with the conductor part. In both the two patents, the sealing mechanism is arranged, so that water is prevented from entering the connecting seat, the use safety of the connecting seat is ensured, and the connecting seat has the characteristics of strong water resistance, electric leakage prevention and short circuit prevention; however, the above patents have disadvantages that: if a hard conductive object similar to the connecting conductor is inserted into the electric connecting hole, the hard conductive object is opened to cause electric shock accidents; in addition, in an environment with water, the sealing mechanism is difficult to completely remove the external water without electric leakage, and particularly after the sealing mechanism is used for a certain time, the sealing mechanism is easy to touch and leak electricity due to abrasion, aging, deformation and the like of the sealing material.

Also, for example, application No. 201620763779.7 discloses a socket with a relay, which includes a housing, wherein a contact portion, a conductor portion, a relay, and a trigger portion are provided in the housing, and the conductor portion is isolated from the outside of the housing; the relay is connected with contact site and conductor portion respectively and whether control contact site and conductor portion communicate electrically, and the control end of relay is connected and control relay switch action to the trigger part electricity. This patent starts the closed power transmission of relay through a starting part, and when not triggering the starting part, the relay is in normally open state and can not electrically conduct in the jack. However, the disadvantages of this patent are: when no plug is inserted, once another conductive object which is not a plug is inserted into the socket hole, the starting part is started again, and then an electric shock or a short circuit accident occurs.

SUMMERY OF THE UTILITY MODEL

The aforesaid to prior art exist not enough, the to-be-solved technical problem of the utility model is: how to provide a safe power supply identification device for a power supply connector, which can effectively prevent electric shock and electric leakage accidents.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a safe power supply recognition device for a power supply connector comprises a mark piece detachably connected with a plug, a recognition circuit arranged in a socket, a power supply and processing circuit for providing power for the recognition circuit and a main circuit for communicating the plug and the socket, wherein the recognition circuit recognizes the state of the mark piece after the plug and the socket are connected in place and determines whether the recognition circuit is switched on or off according to recognized information, and the main circuit is provided with a main switch which is closed when the recognition circuit is switched on.

The utility model discloses a theory of operation is: when the plug and the socket of the utility model are used, the power supply and the processing circuit provide working power supply for the identification circuit, the identification circuit identifies the state in the identification piece at the moment, when the identification circuit identifies that the state information in the identification piece is a set value, the identification circuit is switched on, and when the identification circuit identifies that the state information in the identification piece is not the set value, the identification circuit is in a disconnected state; when the identification circuit is conducted, the main switch on the main circuit is closed, so that the main circuit is conducted, and the plug is electrically connected with the socket.

The beneficial effects of the utility model reside in that: the utility model discloses a plug and socket are when using, after plug and socket are connected, power and processing circuit for identification circuit provide the power and drive identification circuit will discern the state in the identification piece, only can make identification circuit switch on when the state of identification piece is the setting value, and then make the main switch close main circuit switch on, if in some special cases, if not plug but other conducting material insert the socket, then identification circuit will not discern the state information of identification piece, thereby identification circuit will not switch on, electric shock and the electric leakage accident that the conducting material in having avoided not the plug inserts and arouses in the plug; if the electric leakage detection device is used in humid environments and the like, the state information in the identification piece changes, the identification circuit identifies that the state in the identification piece is not a set value, the identification circuit cannot be conducted, and further the main circuit cannot be communicated, so that the electric leakage accident in the humid and watery environment is avoided. Therefore, the safe power supply identification device can effectively avoid electric shock and electric leakage accidents.

Preferably, the identification part comprises a resistor, the identification circuit is a resistor identification circuit, the resistor is electrically connected with the resistor identification circuit after the plug and the socket are connected in place, and the resistor identification circuit is conducted when the resistor identification circuit detects that the resistance value of the resistor is a set value.

Like this, set up the identification part into the resistance, when power and processing circuit provide working power supply for identification circuit, identification circuit discerns the resistance value in the identification part, and only when the resistance value after the discernment is the setting value, identification circuit just switches on, under some special service environment, like during moist or under water, the resistance of resistance will change this moment to identification circuit will discern the resistance change of resistance and be in the off-state, has avoided moist or the electric leakage accident that leads to under water from this.

Preferably, the identification part comprises a capacitor, the identification circuit is a capacitor identification circuit, the capacitor is electrically connected with the capacitor identification circuit after the plug and the socket are connected in place, and the capacitor identification circuit is switched on when the capacitance value of the capacitor is detected to be a set value.

Like this, set up the identification part into the electric capacity, when power and processing circuit provide working power supply for identification circuit, identification circuit discerns the capacitance value in the identification part, and only when the capacitance value after the discernment is the setting value, identification circuit just switches on, under some special service environment, like when moist or under water, the capacitance value will change this moment to identification circuit will discern the capacitance value change and be in the off-state, has avoided moist or the electric leakage accident that leads to under water from this.

Preferably, the identification component is an RFID electronic tag, the identification circuit is a card reader circuit, a card reading coil for reading data in the RFID electronic tag is arranged in the card reader circuit, and the card reader circuit is turned on when the data of the RFID electronic tag read in the card reading coil is detected to be a set value.

Like this, set up the identification part into the RFID label, do not need direct structural connection between identification part and the recognition circuit, can avoid the poor contact problem between identification part and the recognition circuit that leads to after used repeatedly, improve the reliability that the plug connector used.

Preferably, the identification member is a plurality of light-reflecting patches made of light-reflecting materials, the socket is provided with a plurality of groups of photoelectric pair tubes, each group of photoelectric pair tubes comprises a light-emitting source and a photoresistor with resistance value decreasing along with the increase of illumination intensity, the photoresistors are connected in the identification circuit, the light-reflecting patches reflect light emitted by the light-emitting source at corresponding positions and then irradiate the photoresistors of the photoelectric pair tubes in the group after the plug and the socket are connected in place, and the identification circuit is switched on when the set resistance value of the photoresistors decreases.

Like this, set up the identification part into a plurality of reflection of light pasters, when power and processing circuit provide working power supply for identification circuit, only when the plug of settlement inserts in the socket, reflection of light paster makes the photo resistance value that corresponds the position and sets for reduce to the setting value, and then makes identification circuit switch on, when other unset plugs or other conducting material insert the socket, will unable make the photo resistance value of settlement reduce to the setting value, identification circuit will not switch on yet, thereby reach the purpose that prevents the electric shock accident.

Preferably, the identification member is a plurality of magnet blocks, the identification circuit includes a plurality of magnetic switches, the magnet blocks enable the magnetic switches at corresponding positions to be closed after the plug and the socket are connected in place, and the identification circuit is conducted when the magnetic switches are set to be closed.

Like this, set up the identification piece into a plurality of magnet pieces, when power and processing circuit provide working power supply for identification circuit, only when the plug of setting for inserts in the socket, the magnet piece just can make the magnetic switch who corresponds the position and set for closed, and then makes identification circuit switch on, when other unset plugs or other conducting material insert the socket, will unable make the magnetic switch who sets for closed, identification circuit will not switch on yet to reach the mesh that prevents the electric shock accident.

Preferably, the identification member is a plurality of magnet blocks, the identification circuit includes a plurality of magnetic sensors, the magnet blocks enable the characteristic parameters of the magnetic sensors at corresponding positions to change after the plug and the socket are connected in place, and the identification circuit is turned on when the set characteristic parameters of the magnetic sensors change.

Like this, set up the identification piece into a plurality of magnet pieces, when power and processing circuit provide working power for identification circuit, only when the plug of setting for inserts in the socket, the magnet piece just can make the magnetic sensitive element characteristic parameter that corresponds the position and sets for change, and then make identification circuit switch on, when other unset plugs or other conducting substance insert the socket, will unable magnetic sensitive element characteristic parameter that makes the settlement change, identification circuit will not switch on yet, thereby reach the mesh that prevents the electric shock accident.

Preferably, the electronic device further comprises a relay, wherein the relay comprises an electromagnetic part and a switch part, the electromagnetic part is powered when the identification circuit is switched on, the switch part is used as the main switch to be connected to the main circuit, and the switch part is closed when the electromagnetic part is powered.

Like this, through setting up the relay, connect the switch portion of relay in the main circuit, when the electromagnetism portion of relay does not get electric, the main circuit will be in the off-state, only when the identification circuit switches on the back, the electromagnetism portion of relay just can get electric, and the switch portion of relay just can be in the on-state this moment, and the main circuit just can switch on.

Preferably, the socket further comprises two waterproof electrodes arranged on the socket, the waterproof electrodes are connected in the identification circuit, and the two waterproof electrodes are short-circuited when the socket is in a wet environment and cause the identification circuit to be disconnected.

When the socket is used in a humid and watery environment, the two waterproof electrodes are short-circuited and the identification circuit is disconnected, the main switch is disconnected, the main circuit is not conducted, and the plug is not communicated with the socket, so that the electric leakage accident caused by the use of the socket in the humid and watery environment is avoided.

Preferably, the intelligent identification circuit further comprises a bidirectional controllable silicon, the bidirectional controllable silicon is used as the main switch and connected to the main circuit, a control electrode of the bidirectional controllable silicon is connected to the power supply and processing circuit, and the power supply and processing circuit provides a trigger signal for the control electrode of the bidirectional controllable silicon and conducts the control electrode when the identification circuit is conducted.

Like this, through setting up the bidirectional thyristor, connect the bidirectional thyristor on main circuit as main switch, when the control pole of bidirectional thyristor did not receive the electricity, the main circuit will be in the off-state, only when the recognition circuit switches on the back, the control pole of bidirectional thyristor just can receive the electricity, and the bidirectional thyristor switches on this moment, and the main circuit just can switch on.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a flowchart of a first embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 4 is a flowchart of a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of a third embodiment of the present invention;

FIG. 6 is a flowchart of a third embodiment of the present invention;

fig. 7 is a schematic structural diagram of a plug and a socket according to a fourth embodiment of the present invention;

fig. 8 is a circuit diagram of a power supply and processing circuit and an identification circuit according to a fourth embodiment of the present invention;

fig. 9 is a schematic structural view of a plug and a socket according to a fifth embodiment of the present invention;

fig. 10 is a circuit diagram of a power supply and processing circuit and an identification circuit according to a fifth embodiment of the present invention;

fig. 11 is a schematic structural diagram of a plug and a socket according to a sixth embodiment of the present invention;

fig. 12 is a circuit diagram of a power supply and processing circuit and an identification circuit according to a sixth embodiment of the present invention;

fig. 13 is a schematic structural diagram of a seventh embodiment of the present invention;

fig. 14 is a flowchart of a seventh embodiment of the present invention;

fig. 15 is a circuit diagram of an identification circuit according to an eighth embodiment of the present invention;

fig. 16 is a circuit diagram of an identification circuit according to the ninth embodiment of the present invention;

fig. 17 is a circuit diagram of an identification circuit according to a tenth embodiment of the present invention.

Description of reference numerals: the plug 1, the capacitor 11, the resistor 12, the RFID electronic tag 13, the reflective patch 14, the first magnet block 15, the third magnet block 16, the second magnet block 17, the socket 2, the power supply and processing circuit 21, the identification circuit 22, the electromagnetic part 23 of the relay, the switch part 231 of the relay, the card reading coil 24, the card reader circuit 25, the triac 26, the magnetic switch 27, the two-wire plug 3, the first photoelectric pair tube 31, the second photoelectric pair tube 32, the third photoelectric pair tube 33, the fourth photoelectric pair tube 34, the waterproof electrode 4, the first magnetic switch 41, the second magnetic switch 42, the third magnetic switch 43, the first magnetic resistor 44, the second magnetic resistor 45, the third magnetic resistor 46, and the magnetic body 5.

Detailed Description

The first embodiment is as follows:

as shown in fig. 1 and 2, the safe power supply identification device for the power supply connector comprises an identification piece detachably connected with a plug 1, an identification circuit 22 arranged in a socket 2 and capable of identifying the state of the identification piece, a power supply and processing circuit 21 for providing power for the identification circuit 22 and a main circuit for communicating the plug 1 and the socket 2, wherein the main circuit is provided with a main switch which is closed when the identification circuit is switched on.

When the plug and the socket of the utility model are used, the power supply and the processing circuit provide working power supply for the identification circuit, the identification circuit identifies the state in the identification piece at the moment, when the identification circuit identifies that the state information in the identification piece is a set value, the identification circuit is switched on, and when the identification circuit identifies that the state information in the identification piece is not the set value, the identification circuit is in a disconnected state; when the identification circuit is conducted, the main switch on the main circuit is closed, so that the main circuit is conducted, and the plug is electrically connected with the socket.

The utility model discloses a plug and socket are when using, after plug and socket are connected, power and processing circuit for identification circuit provide the power and drive identification circuit will discern the state in the identification piece, only can make identification circuit switch on when the state of identification piece is the setting value, and then make the main switch close main circuit switch on, if in some special cases, if not plug but other conducting material insert the socket, then identification circuit will not discern the state information of identification piece, thereby identification circuit will not switch on, electric shock and the electric leakage accident that the conducting material in having avoided not the plug inserts and arouses in the plug; if the electric leakage detection device is used in humid environments and the like, the state information in the identification piece changes, the identification circuit identifies that the state in the identification piece is not a set value, the identification circuit cannot be conducted, and further the main circuit cannot be communicated, so that the electric leakage accident in the humid and watery environment is avoided. Therefore, the safe power supply identification device can effectively avoid electric shock and electric leakage accidents.

In this embodiment, the identification component includes a capacitor 11, the identification circuit 22 is a capacitor identification circuit, the capacitor 11 is electrically connected to the capacitor identification circuit after the plug 1 and the socket 2 are connected in place, and the capacitor identification circuit is turned on when detecting that the capacitance value of the capacitor 11 is a set value.

In this embodiment, the power supply further includes a relay, the relay includes an electromagnetic portion and a switch portion, the electromagnetic portion 23 of the relay is connected in parallel to two ends of the power supply and processing circuit 21 and is powered when the identification circuit 22 is turned on, the switch portion 231 of the relay is connected to the main circuit as a main switch, and the switch portion 231 of the relay is closed when the electromagnetic portion 23 of the relay is powered.

The specific workflow of this embodiment is as follows: the plug is inserted into the socket and connected in place, the power supply and the processing circuit provide power for the identification circuit at the moment, the identification circuit is driven to identify the capacitance value in the identification part, if the drive circuit identifies that the capacitance value of the capacitor is a set value, the identification circuit is conducted, the power supply and the processing circuit enable the electromagnetic part of the relay to be electrified, after the electromagnetic part of the relay is electrified, the switch part of the relay is changed from a disconnected state to a closed state, the main circuit is further conducted, and the plug is communicated with the socket; if the identification fails (if a plug or a conductive substance which does not have the identification piece is inserted into the socket or the socket is in a wet state, the capacitance value of the capacitor changes), the identification circuit is in a disconnected state, the electromagnetic part of the relay cannot be electrified, the switch part of the relay is also in a disconnected state, so that the main circuit is also in a disconnected state, and the plug and the socket are not connected.

Example two:

as shown in fig. 3 and fig. 4, in the present embodiment, the identification component includes a resistor 12, the identification circuit 22 is a resistor identification circuit, the resistor 12 is electrically connected to the resistor identification circuit after the plug 1 and the socket 2 are connected in place, and the resistor identification circuit is turned on when detecting that the resistance value of the resistor 12 is a set value.

The specific workflow of this embodiment is as follows: the plug is inserted into the socket and connected in place, the power supply and the processing circuit provide power for the identification circuit at the moment, the identification circuit is driven to identify the resistance value in the identification piece, if the drive circuit identifies that the resistance value of the resistor is a set value, the identification circuit is conducted, the power supply and the processing circuit enable the electromagnetic part of the relay to be electrified, after the electromagnetic part of the relay is electrified, the switch part of the relay is changed from a disconnected state to a closed state, the main circuit is further conducted, and the plug is communicated with the socket; if the identification fails (if the plug or the conductive substance which does not have the identification piece is inserted into the socket or the socket is in a wet state, the resistance value of the resistor changes), the identification circuit is in a disconnected state, the electromagnetic part of the relay cannot be electrified, the switch part of the relay is also in a disconnected state, so that the main circuit is also in a disconnected state, and the plug and the socket are not connected.

Example three:

as shown in fig. 5 and fig. 6, in this embodiment, the identification component is an RFID electronic tag 13, the identification circuit 22 is a card reader circuit 25, a card reading coil 24 for reading data in the RFID electronic tag 13 is disposed in the card reader circuit 25, the card reader circuit 25 is turned on when detecting that the data of the RFID electronic tag 13 read in the card reading coil 24 is a set value, the main switch is a triac 26, and a control electrode of the triac 26 is connected to the power supply and processing circuit 21.

The specific workflow of this embodiment is as follows: the plug is inserted into the socket and connected in place, the power supply and processing circuit provides power for the card reader circuit and drives the card reader circuit to identify data in the RFID electronic tag through the card reading coil, if the identification is successful, the power supply and processing circuit provides a trigger signal for a control electrode of the bidirectional thyristor, so that the bidirectional thyristor is conducted, the main circuit is conducted, and the plug is communicated with the socket; if the identification is unsuccessful (if a plug or a conductive substance not provided with the identification part is inserted), the control electrode of the bidirectional controllable silicon does not have a trigger signal, the bidirectional controllable silicon is in a turn-off state, and the plug is not communicated with the socket.

Example four:

in this embodiment, the sign piece is a plurality of reflection of light paster that reflecting material made, be equipped with the photoelectric geminate transistor of multiunit on the socket, every photoelectric geminate transistor of group includes a light emitting source and a photo resistance that reduces along with illumination intensity reinforcing resistance, photo resistance connects in identification circuit, the reflection of light paster will correspond after the light reflection that the position light emitting source sent after plug and socket connection target in place and shine on the photo resistance of this group photoelectric geminate transistor, identification circuit switches on when the resistance of the photo resistance of setting for reduces.

Like this, set up the identification part into a plurality of reflection of light pasters, when power and processing circuit switched on and provide working power for identification circuit, only when the plug of setting for when inserting the socket, reflection of light paster makes the photo resistance value of corresponding the position settlement reduce, and then makes identification circuit switch on, when other unset plugs inserted the socket, will unable make the photo resistance value of setting for reduce, identification circuit will not switch on yet, thereby reach the mesh that prevents the electric shock accident.

Specifically, as shown in fig. 7 and 8, in this embodiment, the identification member is a light-reflecting patch 14 made of a light-reflecting material, four sets of photoelectric pair tubes, namely, a first photoelectric pair tube 31, a second photoelectric pair tube 32, a third photoelectric pair tube 33 and a fourth photoelectric pair tube 34, are disposed on the socket 2, each set of photoelectric pair tubes includes a light-emitting source and a photo-resistor with resistance decreasing with the increase of illumination intensity, when the plug is a three-wire plug, the number of the light-reflecting patches 14 on the plug is two, and when the plug 1 and the socket 2 are connected in place, the two light-reflecting patches 14 in the same set correspond to the first photoelectric pair tube 31 and the second photoelectric pair tube 32 respectively, when the plug is a two-wire plug 3, the number of the light-reflecting patches 14 on the plug 3 is four, the four light-reflecting patches 14 are paired, and when the two-wire plug 3 and the socket are connected in place, the two-reflecting patches 14 in the same set correspond to the first photoelectric pair tube 31 and the, the two sets of reflective patches 14 are designed so that when the two-wire plug 3 is inserted into the receptacle 2 from different directions, there is always one set of reflective patches 14 that correspond in position to the first pair of photoelectric tubes 31 and the second pair of photoelectric tubes 32 when the two-wire plug 3 and the receptacle 2 are connected in place.

The power supply and processing circuit AC-DC provides a power supply 4VCC for the identification circuit, the identification circuit comprises a first photosensitive resistor RL1, a second photosensitive resistor RL2, a third photosensitive resistor RL3 and a fourth photosensitive resistor RL4, a light emitting diode LED1, a light emitting diode LED2, a light emitting diode LED3 and a light emitting diode LED4 which are respectively corresponding to each group of photoelectric counter tubes, wherein after the first photosensitive resistor RL1 and the second photosensitive resistor RL2 are connected in series, one end of the first photosensitive resistor RL 5392 is connected with the power supply 4VCC through a resistor 4R1, the other end of the first photosensitive resistor RL is connected with the grid of the field effect tube 4T, after the third photosensitive resistor RL3 and the fourth photosensitive resistor RL4 are connected in parallel, one end of the first photosensitive resistor RL3 and the second photosensitive resistor RL4 is connected with the grid of the field effect tube 4T, the grid of the field effect tube 4T is also grounded through a resistor 4R2, the source of the field effect tube 4T is grounded, the, the cathode of the diode 4D1 and the other end of the relay 4J are connected to the power supply 4VCC, and after the light emitting diode LED1, the light emitting diode LED2, the light emitting diode LED3 and the light emitting diode LED4 in each photoelectric pair are connected in series, the anode is connected to the 4VCC through the resistor 4R3, and the cathode is grounded. In this embodiment, the fet 4T may also employ other electronic switching elements such as a transistor.

When the plug and the socket are connected in place, the power supply and processing circuit AC-DC passes through the power supply for the identification circuit, and at the moment, the light emitting diode LED1, the light emitting diode LED2, the light emitting diode LED3 and the light emitting diode LED4 in the photoelectric pair tube are lighted, under the action of the light reflecting patch 14 on the plug, light emitted by the light emitting diodes LED1 and LED1 at the first photoelectric pair tube and the second photoelectric pair tube irradiates on the first light dependent resistor RL1 and the second light dependent resistor RL2 through the reflection action of the light reflecting patch 14, the resistance values of the first photo-resistor RL1 and the second photo-resistor RL2 are reduced, the voltage of the power supply 4VCC is applied to the gate of the field effect transistor 4T after passing through the first photo-resistor RL1 and the second photo-resistor RL2, so that the field effect tube 4T is conducted, the relay 4J connected with the drain electrode of the field effect tube 4T is electrified, the switch portion 4J1 switches on the AC power supply AC output to the plug sheet in the socket and sends to the plug 1 inserted into the socket plug sheet. If other metal objects not provided with plugs extend into the socket, the resistance values of the first photosensitive resistor RL1 and the second photosensitive resistor RL2 cannot be changed, namely the identification circuit cannot be conducted, and the main circuit cannot be conducted, so that the protection effect is realized.

Example five:

in this embodiment, the identification member is a plurality of magnet pieces, and the identification circuit includes a plurality of magnetic switches therein, and the magnet piece makes the magnetic switch closure of corresponding position after plug and socket are connected in place, and the identification circuit switches on when the magnetic switch closure that sets for.

Like this, set up the identification piece into a plurality of magnet pieces, when power and processing circuit switched on and provide working power for identification circuit, only when the plug of setting for inserts in the socket, the magnet piece just can make the magnetic switch who corresponds the position and set for closed, and then makes identification circuit switch on, when other unset plugs or other conducting material inserted the socket, will unable make the magnetic switch who sets for closed, identification circuit will not switch on yet, thereby reach the mesh that prevents the electric shock accident.

In the embodiment, the socket further comprises two waterproof electrodes 4 arranged on the socket, the waterproof electrodes 4 are connected in the identification circuit, and the two waterproof electrodes are in short circuit when the socket is in a humid environment and make the identification circuit disconnected.

Specifically, as shown in fig. 9 and 10, in this embodiment, the identification member is a plurality of magnet blocks, the socket 2 is provided with a plurality of magnetic switches, the plurality of magnetic switches at positions corresponding to the plurality of magnet blocks are connected in series when the plug 1 and the socket 2 are connected in place, and the remaining magnetic switches are connected in parallel, in this embodiment, for convenience of description, three magnetic switches are provided on the socket, the three magnetic switches are a first magnetic switch 41, a second magnetic switch 42 and a third magnetic switch 43 which are sequentially arranged, and when the plug is a three-wire plug, a first magnet block 15 and a third magnet block 16 are provided at positions corresponding to the first magnetic switch 41 and the third magnetic switch 43 on the plug 1, respectively; when the plug is the two-wire plug 3, the number of the magnet blocks on the two-wire plug 3 is four, the four magnet blocks are in a group of two by two, the two magnet blocks in the same group respectively correspond to the positions of the first magnetic switch 41 and the third magnetic switch 43 when the plug and the socket are connected in place, and the two groups of magnet blocks are designed to enable one group of magnet blocks to always correspond to the positions of the first magnetic switch 41 and the third magnetic switch 43 when the two-wire plug is inserted into the socket from different directions and the two-wire plug 3 and the socket 2 are connected in place.

When the plug 1 and the socket 2 are connected in place, the power supply and processing circuit AC-DC provides a power supply 5VCC for the identification circuit, the identification circuit comprises a first magnetic switch 5K1 and a third magnetic switch 5K3 which are connected in series, one end of the first magnetic switch 5K1 and the third magnetic switch 5K3 are connected in series and connected with the power supply 5VCC through a resistor 5R1, the other end of the first magnetic switch is connected with the base of the triode 5T, one end of the second magnetic switch 5K2 is connected with the base of the triode 5T, the other end of the second magnetic switch is grounded, the base of the triode 5T is grounded through a resistor 5R2, the emitter of the triode 5T is grounded, the collector of the triode 5T is connected with the anode of the diode 5D1 and one end of the relay 5J, and the cathode of the diode 5D1 and the other end of the relay 5. In this embodiment, the transistor may also adopt other electronic switching elements such as a field effect transistor.

Meanwhile, in this embodiment, two waterproof electrodes 4 are further provided on the socket, and both ends of the waterproof electrodes 4 are connected in parallel with both ends of the second magnetic switch 5K 2.

When the plug and the socket are connected in place, the power supply and processing circuit provides power for the identification circuit, at the moment, under the action of the first magnet block and the third magnet block on the plug, the first magnetic switch 5K1 and the third magnetic switch 5K3 are closed, the second magnetic switch 5K2 is in an off state, at the moment, the voltage of the power supply 5VCC acts on the base of the triode 5T and enables the triode 5T to be conducted after passing through the resistor 5R1, the first magnetic switch 5K1 and the third magnetic switch 5K3, the relay 5J connected with the collector of the triode 5T is powered, and the switch part 5J1 of the relay is connected with an alternating current power supply AC and outputs to the patch in the socket and is sent to the plug inserted into the socket patch. When the plug or other conductive substances of other non-embodiments are inserted into the socket, the magnetic switches cannot work according to the requirements, namely, the triode 5T cannot be conducted, the relay 5J cannot be electrified, and the main circuit cannot be conducted, so that the protection effect is realized.

Meanwhile, when the socket in the embodiment is in damp or water, the two waterproof electrodes 4 on the socket are in short circuit, so that the base electrode of the triode 5T is connected with the ground, the triode 5T is always in a cut-off state, the relay 5J cannot be electrified, the main circuit is not conducted, and the waterproof effect is achieved.

Example six:

in this embodiment, the identification member is a plurality of magnet blocks, the identification circuit includes a plurality of magnetic sensors, the magnet blocks enable the characteristic parameters of the magnetic sensors at corresponding positions to change after the plug and the socket are connected in place, and the identification circuit is turned on when the set characteristic parameters of the magnetic sensors change.

Specifically, as shown in fig. 11 and 12, in this embodiment, the magnetic sensing element is a magnetic sensing resistor, and naturally, in actual use, other magnetic sensing elements such as a hall element may also be used, the identification member is a magnet block, the socket 2 is provided with a plurality of magnetic sensing resistors, the resistance value of the magnetic sensing resistor increases with the increase of the magnetic field intensity, when the plug 1 and the socket 2 are connected in place, the magnetic sensing resistor at the position corresponding to the magnet block is separately connected, and the other magnetic sensing resistors are connected in series, for convenience of explanation in this embodiment, three magnetic sensing resistors are provided on the socket for explanation, the three magnetic sensing resistors are respectively a first magnetic sensing resistor 44, a second magnetic sensing resistor 45 and a third magnetic sensing resistor 46 which are sequentially arranged, and when the plug is a three-wire plug, the second magnet block 17 is provided at the position corresponding to the second magnetic sensing resistor 45 on the plug; when the plug is the two-wire plug 3, the number of the magnet blocks on the plug is two, and the two magnet blocks are designed to ensure that when the two-wire plug is inserted into the socket from different directions, one magnet block always corresponds to the position of the second magnetic resistor 45 when the plug and the socket are connected in place.

The identification circuit comprises a first magnetic resistor RM1 and a third magnetic resistor RM3 which are connected in series, one end of the first magnetic resistor RM1 and the third magnetic resistor RM3 are connected with a power supply 6VCC through a resistor 6R1 after being connected in series, the other end of the first magnetic resistor RM3 and the third magnetic resistor RM3 are connected with the base of a triode 6T, one end of a second magnetic resistor RM2 is connected with the base of the triode 6T, the other end of the second magnetic resistor RM2 is grounded, the base of the triode 6T is grounded through a resistor 6R2, the emitter of the triode 6T is grounded, the collector of the triode 6T is connected with the anode of a diode 6D1 and one end of a relay 6J, and the cathode of the diode 6D1 and the other end of the. In this embodiment, the transistor may also adopt other electronic switches such as a field effect transistor. And (3) a component.

Meanwhile, in this embodiment, two waterproof electrodes 4 are further provided on the socket, and both ends of the waterproof electrodes 4 are connected in parallel with both ends of the second magnetoresistor RM 2.

When the plug and the socket are connected in place, the power supply and processing circuit supplies power for the identification circuit, at the moment, under the action of a second magnet block on the plug, the resistance of a second magnetic resistor RM2 is increased, at the moment, the voltage of the power supply 6VCC acts on the base electrode of the triode 6T and enables the triode 6T to be conducted after passing through the resistor 6R1, the first magnetic resistor RM1 and the third magnetic resistor RM3, a relay 6J connected with the collector electrode of the triode 6T is electrified, and a switch part 6J1 of the relay is connected with an AC power supply and outputs the AC power to a plug sheet in the socket and sends the AC power to the plug inserted in the plug sheet of the socket. When the plug or other conductive substances of other non-embodiments are inserted into the socket, the magnetic switches and the magnetoresistors cannot work according to the requirements, namely, the triode 6T cannot be conducted, the relay 6J cannot be electrified, and the main circuit cannot be conducted, so that the protection effect is realized.

Meanwhile, when the socket in the embodiment is in damp or water, the two waterproof electrodes 4 on the socket are in short circuit, so that the base electrode of the triode 6T is connected with the ground, the triode 6T is always in a cut-off state, the relay 6J cannot be electrified, the main circuit is not conducted, and the waterproof effect is achieved.

Example seven:

as shown in fig. 13 and 14, in the present embodiment, the marker is a magnetic body 5, the socket is provided with a magnetic switch 27, the magnetic switch 27 is connected in series to the power supply and processing circuit 21, both ends of the power supply and processing circuit 21 are connected in parallel to the electromagnetic part 23 of the relay, and the switch part 231 of the relay is connected to the main circuit formed by the plug 1 and the socket 2.

When the plug 1 and the socket 2 of the present embodiment are connected in place, the magnetic switch 27 is closed by the magnetic force of the magnetic body 5, after the magnetic switch 27 is closed at the same time, the power supply and processing circuit 21 connected in series with the magnetic switch is turned on, the electromagnetic part 23 of the relay is powered on, the switch part 231 of the relay is closed, and further the main circuit is turned on, and the plug 1 and the socket 2 are connected.

Example eight:

as shown in fig. 15, a specific configuration of the identification circuit is explained in the present embodiment, in which the identification circuit includes an oscillator circuit, an amplifier circuit, a drive circuit, and a relay circuit connected in this order; the oscillator circuit comprises an operational amplifier 11, a resistor 1R1, a resistor 1R2, a resistor 1R3 and a capacitor 1C1, wherein one end of the resistor 1R1 is connected with the non-inverting input end of the operational amplifier 11, the other end of the resistor 1R2 is grounded, one end of the capacitor 1C1 is connected with the inverting input end of the operational amplifier 11 and one end of the resistor 1R3, the other end of the capacitor 1C1 is grounded, and the other end of the resistor 1R3 is connected with the output end of the operational amplifier 11; the amplifier circuit comprises an operational amplifier 12 and a resistor 1R4, a resistor 1R5 and a resistor 1R6 of peripheral circuits of the operational amplifier 12, the oscillator circuit is coupled with the amplifier circuit through a capacitor 1C2, the output of the oscillator circuit is coupled through the capacitor 1C2 and then output to the non-inverting input end of the operational amplifier 12, one end of a resistor 1R4 is connected with the non-inverting input end of the operational amplifier 12, the other end of the resistor 1R5 is grounded, one end of the resistor 1R5 is connected with the inverting input end of the operational amplifier 12, the other end of the resistor 1R6 is grounded, one end of the resistor 1R6 is connected with the inverting input end of the operational amplifier 12, and; the driving circuit comprises a resistor 1R7, a resistor 1R8 and a triode 1T (wherein the triode can also adopt other electronic switching elements such as a field effect tube and the like), a diode 1D1 and a capacitor 1C3 are further arranged between the driving circuit and the amplifier circuit, wherein the anode of the diode 1D1 is connected with the output end of the operational amplifier 12, the cathode of a diode 1D1 is connected with one ends of a resistor 1R7 and a capacitor 1C3, the other end of the capacitor 1C3 is grounded, the other end of the resistor R7 is connected with the base electrode of the triode 1T, one end of the resistor 1R8 is connected with the base electrode of the triode 1T, the other end of the resistor 1R8 is grounded, and the emitting electrode of; the relay circuit comprises a relay 1J and a diode 1D2, wherein the collector of a triode 1T is respectively connected with the anode of a diode 1D2 and one end of the relay 1J, and the cathode of a diode 1D2 and the other end of the relay 1J are connected with a power supply 1 VCC.

The identification circuit of this embodiment is in operation: an oscillator circuit is formed by an operational amplifier 11, a capacitor 1C1, a resistor 1R1, a resistor 1R2 and a resistor 1R3, the oscillator circuit is coupled to an amplifier circuit formed by the operational amplifier 12, a peripheral circuit resistor 1R4, a resistor 1R5 and a resistor 1R6 through a coupling capacitor 1C2 for amplification, the capacitor 1C3 is charged through a diode 1D1, a driving circuit formed by a triode 1T, a resistor 1R7 and a resistor 1R8 is conducted, a relay 1J is electrified, a power supply voltage is connected to a patch in a socket through a switch part of the relay 1J and is sent to a plug inserted into the socket; in the specific use, any 1 or more elements of the capacitor 1C1, the resistor 1R1, the resistor 1R2 and the resistor 1R3 in the oscillator are placed in a plug to form an identification piece, and other circuits are placed in a socket, so that when the plug is inserted into the socket, the circuits placed in the plug are connected with the circuits in the socket through electric contact, the whole circuit can normally work, the relay 1J is electrified and pulled in, and the switching part of the relay is connected with an AC power supply and outputs the AC power supply to a plug sheet in the socket and transmits the AC power supply to the plug sheet inserted into the socket; if the plug is not inserted into the socket, or the plug is inserted into the socket, the electrical parameters of the identification piece in the plug can be changed due to moisture, water immersion, or pollution, short circuit and the like of an electrical connection part caused by a conductive object, so that the oscillator stops vibrating, the whole circuit cannot normally work, the relay 1J cannot be electrified, the switch part is disconnected, the plug sheet in the socket cannot be electrified, and the alternating-current power supply cannot be output into the plug.

Example nine:

as shown in fig. 16, another specific configuration of the identification circuit is explained in the present embodiment, the identification circuit includes a threshold setting circuit including a resistor 2R1, a resistor 2R2, a resistor 2R3, a resistor 2R4, and a resistor 2R 5; the window comparison circuit comprises an operational amplifier 21 and an operational amplifier 22, wherein one end of a resistor 2R1 is connected with a power supply 2VCC, the other end is connected with an inverting input terminal of the operational amplifier 21, one end of a resistor 2R2 is connected with a non-inverting input terminal of the operational amplifier 22, the other end is grounded, the inverting input terminal of the operational amplifier 21 is connected with the non-inverting input terminal of the operational amplifier 22, one end of a resistor 2R3 is connected with the power supply 2VCC, the other end is connected with the non-inverting input terminal of the operational amplifier 21, one end of a resistor 2R5 is connected with the inverting input terminal of the operational amplifier 22, the other end is connected with ground, a resistor 2R4 is connected between 2R3 and 2R5, a driving circuit comprises a resistor 2R6, a resistor 2R7, a resistor 2R8 and a triode 2T (wherein the triode can also adopt other electronic switching elements such as a field effect transistor), a, the cathode of the diode 2D1 is connected with the output end of the operational amplifier 21, the cathode of the diode 2D2 is connected with the output end of the operational amplifier 22, one end of the resistor 2R6 is connected with the power supply 2VCC, the other end of the resistor is connected with the anode of the diode 2D1, one end of the resistor 2R7 is simultaneously connected with the anodes of the diode 2D1 and the diode 2D2, the other end of the resistor is connected with the base of the triode 2T, one end of the resistor 2R8 is connected with the base of the triode 2T, the other end of the resistor is grounded, the execution circuit comprises a relay 2J and a diode 2D3, the collector of the triode 2T is respectively connected with one end of the relay 2J and the anode of the diode 2D3, and the cathode of the diode 2D3 and.

The identification circuit of this embodiment is in operation: a threshold setting circuit is composed of a resistor 2R1, a resistor 2R2, a resistor 2R3, a resistor 2R4 and a resistor 2R5, an operational amplifier 21 and an operational amplifier 22 form a window comparison circuit, a diode 2D1 and a diode 2D2 form an AND circuit, a triode 2T, a resistor 2R6, a resistor 2R7 and a resistor 2R8 form a driving circuit, any 1 or more elements of the resistor 2R1, the resistor 2R2, the resistor 2R3, the resistor 2R4 and the resistor 2R5 in the threshold setting circuit form an identification piece and are placed in a plug, the other circuits are arranged in the socket, thus when the plug is inserted into the socket, the circuit arranged in the plug is connected with the circuit in the socket through electric contact, the whole circuit can work normally, the relay 2J is closed, the switch part is connected with an AC power supply and outputs to a plug sheet in the socket and sends the plug sheet to a plug inserted in the socket; if the plug is not inserted into the socket or the plug is inserted into the socket, the threshold value in the threshold value setting circuit can be changed due to moisture, water immersion or pollution, short circuit and the like of an electric connection part caused by a conductive object, so that the window comparison circuit outputs low level, 2T is cut off, the relay 2J is not attracted, and therefore the plug sheet in the socket cannot be powered on, and the alternating-current power supply cannot be output into the plug.

Example ten:

as shown in fig. 17, another specific structure of the identification circuit is described in the present embodiment, the identification circuit includes an oscillator circuit, an amplifier circuit, a driving circuit, and a relay circuit, the oscillator circuit includes an inverter 31, a capacitor 3C1, and a resistor 3R1, two ends of the resistor 3R1 are respectively connected to an input end and an output end of the inverter 31, one end of the capacitor 3C1 is connected to the input end of the inverter 31, and the other end is grounded; the amplifier circuit comprises a resistor 3R2 and an inverter 32, the amplifier circuit and the oscillator circuit are coupled through a capacitor 3C2, one end of the resistor 3R2 is connected with a power supply 3VCC, and the other end of the resistor 3R2 is connected with the input end of the inverter 32; the driving circuit comprises an inverter 33 and a resistor 3R3, one end of the resistor 3R3 is connected with the input end of the inverter 33, the other end of the resistor is grounded, a diode 3D1 and a capacitor 3C3 are further arranged between the driving circuit and the amplifier circuit, the anode of the diode 3D1 is connected with the output end of the inverter 32, the cathode of the diode is connected with the input end of the inverter 33, one end of the capacitor 3C3 is connected with the cathode of the diode 3D1, and the other end of the capacitor is grounded; the relay circuit includes a relay 3J and a diode 3D2, an output terminal of the inverter 33 is connected to an anode of the diode 3D2 and one end of the relay 3J, respectively, and a cathode of the diode 3D2 and the other end of the relay 3J are connected to a power supply 3 VCC.

This identification circuit is at specific during operation: an oscillator circuit is formed by the inverter 31, the resistor 3R1 and the capacitor 3C1, oscillation waves of the oscillator circuit are coupled to an amplifier circuit formed by the inverter 32 and the resistor 3R2 through the coupling capacitor 3C2, and then are charged to the 3C3 through the diode 3D1, so that a driving circuit formed by the inverter 33 and the resistor 3R3 outputs low level, and the relay 3J is attracted; one or two elements of a capacitor 3C1 and a resistor 3R1 in the oscillator circuit form an identification piece and are placed in a plug, and other circuits are placed in a socket, so that when the plug is inserted into the socket, the circuit placed in the plug is connected with the circuit in the socket through electric contact, the whole circuit can normally work, a relay 3J is attracted, and a switch part of the relay is connected with an alternating current power supply AC and outputs to a plug sheet in the socket and sends the alternating current power supply AC to the plug inserted into a plug sheet of the socket; if the plug is not inserted into the socket, or the plug is inserted into the socket, or the electric connection part is polluted and short-circuited due to moisture, water immersion or a conductive object, the oscillation circuit can be stopped, the inverter 32 outputs low level, the inverter 33 outputs high level, and the relay 3J is not attracted, so that the patch panel in the socket can not be electrified, and the alternating-current power supply can not be output into the plug.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that those modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all should be covered in the scope of the claims of the present invention.

Claims

1. The safe power supply identification device for the power supply connector is characterized by comprising an identification piece detachably connected with a plug, an identification circuit arranged in a socket and capable of identifying the state of the identification piece, a power supply and processing circuit for providing power for the identification circuit and a main circuit for communicating the plug with the socket, wherein the main circuit is provided with a main switch, and the main switch is closed when the identification circuit is switched on.

2. A safety power supply identification device for a power supply connector as claimed in claim 1, wherein said identification member is a capacitor, said identification circuit is a capacitor identification circuit, said capacitor is electrically connected to said capacitor identification circuit after said plug and said socket are connected in place, said capacitor identification circuit is turned on when it is detected that the capacitance value of said capacitor is a set value.

3. A safety power supply identification device for a power supply connector as claimed in claim 1, wherein said identification member is a resistor, said identification circuit is a resistor identification circuit, said resistor is electrically connected to said resistor identification circuit after said plug and said socket are connected in place, said resistor identification circuit is turned on when it detects that the resistance value of said resistor is a set value.

4. A safe power supply identification device for a power supply connector as claimed in claim 1, wherein the identification component is an RFID electronic tag, the identification circuit is a card reader circuit, a card reading coil for reading data in the RFID electronic tag is arranged in the card reader circuit, and the card reader circuit is turned on when the data of the RFID electronic tag read in the card reading coil is detected to be a set value.

5. A safety power supply identification device for a power supply connector as claimed in claim 1, wherein said identification member is a plurality of light reflecting patches made of light reflecting material, said socket is provided with a plurality of sets of photoelectric pair tubes, each set of said photoelectric pair tubes comprises a light source and a photo resistor with resistance decreasing with increasing illumination intensity, said photo resistor is connected to said identification circuit, said light reflecting patches reflect light emitted from said light source at a corresponding position to irradiate said photo resistor of said set of said photoelectric pair tubes after said plug and said socket are connected in place, and said identification circuit is turned on when the set resistance of said photo resistor decreases.

6. A safety power supply identification device for a power supply connector as claimed in claim 1, wherein said identification member is a plurality of magnet blocks, said identification circuit includes a plurality of magnetic switches therein, said magnet blocks close said magnetic switches in corresponding positions after said plug and said socket are connected in place, and said identification circuit is turned on when said magnetic switches are set to be closed.

7. A safety power supply identification device for a power supply connector as claimed in claim 1, wherein said identification member is a plurality of magnet blocks, said identification circuit comprises a plurality of magnetic sensing elements, said magnet blocks will change the characteristic parameters of said magnetic sensing elements at corresponding positions after the plug and the socket are connected, and said identification circuit is turned on when the set characteristic parameters of said magnetic sensing elements are changed.

8. A safety power supply identification device for a power supply connector according to claim 1, further comprising a relay including an electromagnetic portion which is energized when the identification circuit is on, and a switching portion which is connected as a main switch to the main circuit and is closed when the electromagnetic portion is energized.

9. A safety power supply identification device for a power supply connector as claimed in claim 6 or 7, further comprising two waterproof electrodes provided on the socket, said waterproof electrodes being connected in said identification circuit, both said waterproof electrodes short circuiting the socket in a wet environment and causing said identification circuit to open.

10. The identification device of claim 1, further comprising a triac, wherein said triac is connected to said main circuit as said main switch, and a control terminal of said triac is connected to said power supply and processing circuit, and said power supply and processing circuit provides a trigger signal to said triac control terminal when said identification circuit is turned on.