WO2018196458A1 - 电源接口通断控制电路及安全电源装置 - Google Patents

电源接口通断控制电路及安全电源装置 Download PDF

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Publication number
WO2018196458A1
WO2018196458A1 PCT/CN2018/074655 CN2018074655W WO2018196458A1 WO 2018196458 A1 WO2018196458 A1 WO 2018196458A1 CN 2018074655 W CN2018074655 W CN 2018074655W WO 2018196458 A1 WO2018196458 A1 WO 2018196458A1
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WO
WIPO (PCT)
Prior art keywords
jack
induced voltage
pin
receiving unit
resistor
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PCT/CN2018/074655
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English (en)
French (fr)
Inventor
徐新华
Original Assignee
广东百事泰电子商务股份有限公司
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Publication of WO2018196458A1 publication Critical patent/WO2018196458A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6683—Structural association with built-in electrical component with built-in electronic circuit with built-in sensor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component
    • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
    • H01R13/6691—Structural association with built-in electrical component with built-in electronic circuit with built-in signalling means

Definitions

  • the present invention relates to the field of power supply technologies, and in particular, to a power interface on/off control circuit and a safety power supply device.
  • the general safety socket/plug is mechanically used for safety protection, and can prevent children's fingers under normal circumstances.
  • the accidental electric shock is inserted, but the electric shock caused by the child inserting the conductive object into the socket/plug is not avoided, and the safety is low, and it is very easy to cause a dangerous situation such as electric shock.
  • the related art discloses an anti-shock safety socket, which mainly determines whether a finger is inserted into a socket by monitoring the frequency of change of the blood volume of the finger capillary with the heart beat, and the protection measure is relatively simple, and it is difficult to avoid many mistakes. Electric shock situation.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent. Accordingly, it is an object of the present invention to provide a power interface on/off control circuit.
  • Another object of the present invention is to provide a safe power supply device.
  • a power interface on/off control circuit is applied to a power supply device having a power interface including a first jack having a live wire connector and having a neutral connection
  • the second jack of the device, the power interface on/off control circuit includes:
  • a relay unit for controlling the on and off between the live wire connector and the live wire output of the external AC power source, and the on and off between the neutral wire connector and the neutral wire output terminal of the external AC power source;
  • the first sensor is configured to detect whether a first pin is inserted in the first jack
  • the second sensor is configured to detect whether a second pin is inserted in the second jack Pin
  • the controller is connected to the relay unit, the first inductor and the second inductor, and when the first pin is inserted into the first jack, the second jack is inserted into the first jack
  • the controller outputs a control signal to control the relay unit such that the live wire connector is connected to the live wire output terminal of the external AC power source, and the neutral wire connector and the neutral wire output terminal of the external AC power source Turn on.
  • the first sensor detects whether a first pin is inserted in the first jack
  • the second sensor detects whether a second pin is inserted in the second jack.
  • the controller outputs a control signal to control the relay unit, and the live line connector is controlled by the relay unit to be connected to the live line output of the external AC power source.
  • the neutral connector is connected to the neutral output of the external AC power source, that is, only the conductive object is inserted into the first socket and the second socket, so that the power interface can be triggered to be connected to the external AC power source. It can reduce the risk of electric shock when children use conductive objects to insert them incorrectly, which greatly improves the safety of power supply devices such as sockets.
  • the power interface on/off control circuit according to the above embodiment of the present invention may further have the following additional technical features:
  • the first inductor includes a first light emitting tube and a first light receiving unit, and the first light emitting tube and the first light receiving unit are oppositely mounted on opposite sides of the first socket And the first photosensitive receiving unit is connected to the controller;
  • the second inductor includes a second light emitting tube and a second light receiving unit, the second light emitting tube and the second light receiving unit are oppositely mounted on opposite sides of the second jack, and the second photosensitive receiving The unit is connected to the controller.
  • the first photosensitive receiving unit when the first pin is inserted into the first jack and the second pin is inserted into the second jack, the first photosensitive receiving unit generates a first induced voltage.
  • the second photosensitive receiving unit when the first pin is inserted into the first jack and the second pin is inserted into the second jack, the first photosensitive receiving unit generates a first induced voltage.
  • the second photosensitive receiving unit when the first pin is inserted into the first jack and the second pin is inserted into the second jack, the first photosensitive receiving unit generates a first induced voltage.
  • the second photosensitive receiving unit when the first pin is inserted into the first jack and the second pin is inserted into the second jack, the first photosensitive receiving unit generates a first induced voltage.
  • the controller outputs the control signal when the first induced voltage is greater than the first predetermined voltage and the second induced voltage is greater than the second predetermined voltage.
  • the first photosensitive receiving unit when the first pin is inserted into the first jack and the second pin is inserted into the second jack, the first photosensitive receiving unit generates a first induced voltage.
  • the second photosensitive receiving unit when the first pin is inserted into the first jack and the second pin is inserted into the second jack, the first photosensitive receiving unit generates a first induced voltage.
  • the second photosensitive receiving unit when the first pin is inserted into the first jack and the second pin is inserted into the second jack, the first photosensitive receiving unit generates a first induced voltage.
  • the second photosensitive receiving unit when the first pin is inserted into the first jack and the second pin is inserted into the second jack, the first photosensitive receiving unit generates a first induced voltage.
  • the controller When the first induced voltage is greater than the first predetermined voltage, the second induced voltage is greater than the second predetermined voltage, and a time between the time when the first induced voltage is generated and the time when the second induced voltage is generated The difference is less than the set time, and the controller outputs the control signal.
  • one end of the first light-emitting tube is connected to the first direct current power source through a first resistor, the other end of the first light-emitting tube is grounded, and the first photosensitive receiving unit comprises a first photoresistor. a second resistor, a third resistor, and a seventh resistor, wherein one end of the first photoresistor is connected to the second DC power source through the second resistor, and the other end of the first photoresistor is grounded through the seventh resistor.
  • the seventh resistor and the node of the other end of the first photoresistor are connected to the first signal input end of the controller through the third resistor;
  • the second photosensitive receiving unit includes a second photoresistor, a fifth resistor, and a second resistor a sixth resistor and an eighth resistor, wherein one end of the second photoresistor is connected to the second DC power source through the fifth resistor, and the other end of the second photoresistor is grounded through the eighth resistor, the eighth A node of the resistor and the other end of the second photoresistor is coupled to the second signal input of the controller via the sixth resistor.
  • the relay unit comprises:
  • the relay includes a coil, a first switch and a second switch, one end of the coil is connected to a first DC power source, and the other end of the coil is connected to a first end of the switch circuit, and the switch circuit is The two ends are grounded, the control end of the switch circuit is connected to the signal output end of the controller to receive the control signal, and the coil is controlled to be turned on according to the control signal, so that the first switch and the second The switch is closed; the first switch is connected between the live wire connector and the live wire output end of the external AC power source, and the second switch is connected between the neutral wire connector and the neutral wire output terminal of the external AC power source ;
  • the first diode being in parallel with the coil.
  • the switch circuit includes a ninth resistor, a tenth resistor, an eleventh resistor, and a first transistor, and one end of the ninth resistor serves as a control end of the switch circuit, The other end of the ninth resistor is connected to one end of the tenth resistor and the base of the first transistor, and the other end of the tenth resistor is connected to the emitter of the first transistor, the first The emitter of the tertiary tube serves as a second end of the switching circuit, the collector of the first tertiary tube is connected to one end of the eleventh resistor, and the other end of the eleventh resistor serves as the The first end of the switching circuit.
  • an LED indicating circuit is further included, the LED indicating circuit is connected to the controller, and the power-on state of the power interface is indicated according to the control signal.
  • a power interface on/off control circuit according to an embodiment of the present invention is applied to a power supply device having a power interface including a first jack having a live wire connector and a second wire having a neutral connector a jack and a third jack having a ground connection, the power interface on/off control circuit comprising:
  • a relay unit for controlling the on and off between the live wire connector and the live wire output of the external AC power source, the on and off between the neutral wire connector and the neutral wire output terminal of the external AC power source, and the ground The connection between the wire connector and the ground terminal of the external AC power source;
  • the first sensor is configured to detect whether a first pin is inserted in the first jack
  • the second sensor is configured to detect the second jack Whether a second pin is inserted or not
  • the third sensor is configured to detect whether a third pin is inserted into the third jack
  • the controller is connected to the relay unit, the first inductor, the second inductor, and the third inductor, and inserting the first pin into the first jack, the second jack
  • the controller outputs a control signal to control the relay unit such that the live wire connector and the live line output of the external AC power source Turned on, the neutral connector is connected to the neutral output of the external AC power source, and the ground connection is connected to the ground terminal of the external AC power source.
  • the first inductor includes a first light emitting tube and a first light receiving unit, and the first light emitting tube and the first light receiving unit are oppositely mounted on opposite sides of the first socket And the first photosensitive receiving unit is connected to the controller;
  • the second inductor includes a second light emitting tube and a second light receiving unit, the second light emitting tube and the second light receiving unit are oppositely mounted on opposite sides of the second jack, and the second photosensitive receiving a unit is connected to the controller;
  • the third inductor includes a third light emitting tube and a third light receiving unit, the third light emitting tube and the third light receiving unit are oppositely mounted on opposite sides of the third jack, and the third photosensitive receiving The unit is connected to the controller.
  • the first photosensitive receiving unit when the first pin is inserted into the first jack, the second pin is inserted into the second pin, and the third pin is inserted into the third pin
  • the first photosensitive receiving unit when the pin is inserted, the first photosensitive receiving unit generates a first induced voltage, the second photosensitive receiving unit generates a second induced voltage, and the third photosensitive receiving unit generates a third induced voltage
  • the controller outputs the control when the first induced voltage is greater than a first predetermined voltage, the second induced voltage is greater than a second predetermined voltage, and the third induced voltage is greater than a third predetermined voltage signal.
  • the first photosensitive receiving unit when the first pin is inserted into the first jack, the second pin is inserted into the second pin, and the third pin is inserted into the third pin
  • the first photosensitive receiving unit when the pin is inserted, the first photosensitive receiving unit generates a first induced voltage, the second photosensitive receiving unit generates a second induced voltage, and the third photosensitive receiving unit generates a third induced voltage
  • the first induced voltage is greater than the first preset voltage
  • the second induced voltage is greater than the second predetermined voltage
  • the third induced voltage is greater than the third predetermined voltage
  • the time of the first induced voltage is generated When a difference between a time when the first induced voltage is generated and a time when the third induced voltage is generated is less than a set time
  • the first induced voltage is greater than the first preset voltage
  • the second induced voltage is greater than the second predetermined voltage
  • the third induced voltage is greater than the third predetermined voltage
  • the first induced voltage is generated The difference between the time and the time at which the second induced voltage is generated, the difference between the time at which the first induced voltage is generated and the time at which the third induced voltage is generated, the second induced voltage
  • the difference between the time of the third induced voltage and the time of the third induced voltage is less than the set time
  • the controller outputs the control signal.
  • a safety power supply device has a power interface on/off control circuit as described above.
  • the safety power supply unit is a socket or a socket.
  • the safety power supply device has the above-mentioned power interface on/off control circuit, and therefore has higher security.
  • FIG. 1 is a schematic block diagram of a power interface on/off control circuit according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a power interface on/off control circuit according to an embodiment of the present invention
  • FIG. 3 is a schematic structural view showing a power supply device plugged into a power plug according to an embodiment of the present invention
  • FIG. 4 is a schematic block diagram of a power interface on/off control circuit according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural view of a power supply device plugged into a power plug according to another embodiment of the present invention.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or connected integrally; may be mechanical connection or electrical connection; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • installation shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise.
  • , or connected integrally may be mechanical connection or electrical connection; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them.
  • the first feature "above”, “above” and “above” the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.
  • a power interface on/off control circuit according to an embodiment of the present invention is applied to a power supply device having a power interface including a first jack 60 having a live wire connector 50. And a second jack 61 having a neutral connector 51.
  • the power supply unit can be, but is not limited to, a socket, a socket, and the like.
  • the power interface on/off control circuit includes a relay unit 10, a first inductor 20, a second inductor 21, and a controller 30.
  • the relay unit 10 is configured to control the on and off between the live wire connector 50 and the live wire output terminal L of the external AC power source, and between the neutral wire connector 51 and the neutral wire output terminal N of the external AC power source. On and off.
  • the first sensor 20 is configured to detect whether the first pin 701 is inserted into the first jack 60
  • the second sensor 21 is configured to detect whether the second pin 702 is inserted into the second jack 61.
  • the first inductor 20 may be installed near the first jack 60
  • the second inductor 21 may be installed near the second jack 61, for example, the first inductor 20 is mounted on the side of the first jack 60.
  • the wall, the second inductor 21 is mounted to the side wall of the second insertion hole 61.
  • the controller 30 is connected to the relay unit 10, the first inductor 20, and the second inductor 21.
  • the controller 30 outputs a control signal to control the relay unit 10 such that the live wire connector 50 is connected to the live wire output terminal L of the external AC power source, and the neutral wire connector 51 and The neutral output terminal N of the external AC power supply is turned on.
  • the user can plug the power plug 70 on one end of the power cable of the power device with the power connector, that is, the first pin 701 on the power plug 70 is correspondingly inserted into the power connector.
  • the first jack 60 is in contact with the live wire connector 50 in the first jack 60
  • the second pin 702 on the power plug 70 is correspondingly inserted into the second jack 61 and with the neutral line in the second jack 61.
  • the connector 51 is in contact.
  • the first sensor 20 detects that the insertion of the first pin 701 generates a first sensing signal
  • the second sensor 21 detects that the insertion of the second pin 702 generates a second sensing signal.
  • the controller 30 After receiving the first sensing signal and the second sensing signal, the controller 30 outputs a control signal, by which the relay unit 10 is controlled to be closed, so that the live wire connector 50 is connected to the live wire output terminal L of the external AC power source, and The neutral connector 51 is connected to the neutral output terminal N of the external AC power source.
  • the first jack 60 and the second jack 61 of the power interface can be energized, and the alternating current passes through the live connector 50 and the neutral connector. 51 is transmitted to the power plug 70 of the powered device.
  • the controller 30 since the controller 30 generates the sensing signals when both the first sensor 20 and the second sensor 21 generate an output signal, the output control signal controls the relay unit 10 to be closed, so that the power interface is energized, so when others (such as children) When a conductive object is inserted into any one of the first insertion hole 60 or the second insertion hole 61, the power supply interface is not energized, and therefore, there is no risk of electric shock.
  • the first sensor 20 detects whether the first pin 701 is inserted into the first jack 60, and the second sensor 21 detects the second jack 61. Whether the second pin 702 is inserted, when the first pin 60 is inserted into the first pin 60, and the second pin 61 is inserted into the second pin 702, the controller 30 outputs a control signal to control the relay unit 10, and the hot line is controlled by the relay unit 10.
  • the connector 50 is connected to the live line output terminal L of the external AC power source, and the neutral line connector 51 is connected to the neutral line output terminal N of the external AC power source, that is, only the first jack 60 and the second jack 61 are provided. Inserting a conductive object inside can trigger the power interface to be connected to the external AC power source. This can reduce the risk of electric shock when the child uses the conductive object to insert the plug, which greatly improves the safety of the power supply device such as the socket.
  • the first inductor 20 includes a first LED tube 1 and a first photosensitive receiving unit, and the first LED tube 1 and the first photosensitive receiving unit are oppositely mounted to the first socket 60.
  • the first photosensitive receiving unit is connected to the controller 30;
  • the second inductor 21 includes a second light emitting tube LED2 and a second photosensitive receiving unit, the second light emitting tube LED2 and the second photosensitive receiving The unit is oppositely mounted on both sides of the second insertion hole 61, and the second photosensitive receiving unit is connected to the controller 30.
  • a first light path is formed between the first light-emitting tube LED1 and the first light-receiving unit
  • a second light path is formed between the second light-emitting tube LED2 and the second light-receiving unit.
  • the first The photosensitive receiving unit when the first pin 701 is inserted into the first jack 60, and the second pin 601 is inserted into the second pin 702, the first The photosensitive receiving unit generates a first induced voltage, and the second photosensitive receiving unit generates a second induced voltage.
  • the controller 30 outputs the control signal when the first induced voltage is greater than the first predetermined voltage and the second induced voltage is greater than the second predetermined voltage.
  • the sensing signals generated by the first photosensitive receiving unit and the second photosensitive receiving unit are induced voltages (voltage signals), and when conductive objects of different sizes and shapes are inserted into the first insertion hole 60 or the second insertion hole 61
  • the first induced voltage generated by the first photosensitive receiving unit and the second induced voltage generated by the second photosensitive receiving unit are different, and the larger the blocking area is, because the shielding areas of the first light path and the second light path are different. , the larger the induced voltage is generated, and the smaller the opposite.
  • the shielding area of the first optical channel and the second optical channel is constant, and is generally different from the ordinary one.
  • the conductive member is electrically inserted. Therefore, when the first pin 701 is inserted into the first insertion hole 60, the first induced voltage generated by the first photosensitive receiving unit is substantially fixed. Correspondingly, the second pin 702 is inserted into the second insertion hole 61. In the middle, the second induced voltage generated by the second photosensitive receiving unit is substantially fixed.
  • the first pin 701 and the second pin 702 on the power plug 70 are substantially matched with the first jack 60 and the second jack 61, when the first pin of a standard power plug 70 is used, 701, the second pin 702 is correspondingly inserted into the first jack 60 and the second jack 61, respectively, the first pin 701 can completely block the first optical channel, and the second pin 702 can completely block the second optical channel, corresponding
  • the first pin 701 is inserted into the first insertion hole 60
  • the first photosensitive receiving unit generates an induced voltage greater than when the small conductive object is inserted into the first insertion hole 60
  • the first photosensitive receiving unit generates an induced voltage
  • the second pin 702 is inserted into the first pin 60.
  • the second photosensitive receiving unit When the second photosensitive receiving unit generates the induced voltage in the second insertion hole 61, the second photosensitive receiving unit generates the induced voltage when the small conductive object is inserted into the second insertion hole 61.
  • the first standard voltage and the first standard voltage generated by the first photo receiving unit are The second standard voltage generated by the second photosensitive receiving unit is used to set the first preset voltage and the second preset voltage.
  • the first pin 701 and the second pin 702 of the standard power plug 70 are respectively inserted into the first jack.
  • the first standard voltage generated by the first photosensitive receiving unit and the second standard voltage generated by the second photosensitive receiving unit are both 2.0 volts, and the first preset voltage and the second pre-prepared Set the voltage to 1.8 volts.
  • the controller 30 When the first induced voltage generated by the first photosensitive receiving unit is greater than the first predetermined voltage, and the second induced voltage generated by the second photosensitive receiving unit is greater than the second predetermined voltage, determining that the first pin of the standard power plug 70 is the first pin
  • the 701 and the second pin 702 are respectively inserted into the first jack 60 and the second jack 61.
  • the controller 30 outputs a control signal to control the relay unit 10 to be closed, so that the first jack 60 and the second plug of the power interface are enabled.
  • the hole 61 is energized.
  • the first photosensitive receiving unit and the second photosensitive receiving unit use different characteristics of induced voltages generated when the conductive members of different sizes and shapes are inserted into the first insertion hole 60 or the second insertion hole 61, and By using the magnitude of the first induced voltage and the second induced voltage as the trigger condition for the controller 30 to output the control signal, the safety of the power supply device can be further improved.
  • Scene 1 The size of the conductive object is smaller than the size of the first pin 701 and the second pin 702 on the standard power plug 70.
  • the first insertion hole 60 is inserted into a conductive member having a small size (for example, a diameter or a width of 1 mm). Although the conductive member contacts the live wire connector 50 in the first insertion hole 60, the conductive member cannot be completely completed. Blocking the first light path, the first induced voltage generated by the first photosensitive receiving unit (for example, 1.55 volts) is lower than the first preset voltage (for example, 1.8 volts).
  • the first induced voltage generated by the first photosensitive receiving unit for example, 1.55 volts
  • the first preset voltage for example, 1.8 volts
  • the controller 30 does not output a control signal, corresponding to The relay unit 10 is kept in the off state, the live wire connector 50 is disconnected from the live wire output terminal L of the external AC power source, and the neutral wire connector 51 is disconnected from the neutral wire output terminal N of the external AC power source, and the power interface is powered off.
  • the second jack 61 is inserted into a small conductive object, and the second induced voltage generated by the second photosensitive receiving unit (for example, 1.55 volts) is lower than the second preset voltage (for example, 1.8 volts).
  • the controller 30 also does not output a control signal.
  • the first jack 60 and the second jack 61 respectively insert a small conductive object, the first sensing voltage generated by the first photosensitive receiving unit is lower than the first preset voltage, and the second sensing generated by the second photosensitive receiving unit The voltage is lower than the second predetermined voltage, and at this time, the controller 30 does not output the control signal.
  • Scene 2 Only one of the first jack 60 and the second jack 61 is inserted with a conductive object.
  • the metal needle For example, only a metal needle having a large size (for example, a diameter or a width of 5 mm) is inserted into the first insertion hole 60, although the metal needle contacts the live wire connector 50 in the first insertion hole 60, and the metal needle can be completely
  • the first light-receiving unit generates a first induced voltage that is greater than the first predetermined voltage.
  • the second photosensitive receiving unit does not sense the voltage.
  • the controller 30 does not output the control signal.
  • the controller 30 also does not output a control signal.
  • the first photosensitive receiving unit when the first pin 60 is inserted into the first jack 60, and the second pin 61 is inserted into the second pin 702, the first photosensitive receiving unit A first induced voltage is generated, and the second photosensitive receiving unit generates a second induced voltage.
  • the first induced voltage is greater than the first predetermined voltage
  • the second induced voltage is greater than the second predetermined voltage
  • a time between the time when the first induced voltage is generated and the time when the second induced voltage is generated The difference is less than the set time, and the controller 30 outputs the control signal.
  • the difference between the first induced voltage, the second induced voltage, and the time between the time generated by the first induced voltage and the time generated by the second induced voltage is used as the controller 30.
  • the trigger condition of the output control signal is only when the first induced voltage is greater than the first preset voltage, the second induced voltage is greater than the second predetermined voltage, and the time between the first induced voltage and the second induced voltage is generated.
  • the difference is less than the set time, and the controller 30 outputs a control signal.
  • the two conductive objects are respectively inserted into the first insertion hole 60 and the second insertion hole 61, and the two conductive objects are also able to completely block the corresponding first optical channel.
  • the controller 30 outputs a control signal such that the first jack 60 and the second jack 61 of the power interface are energized, there is still a risk of electric shock in this case.
  • the difference between the time when the first induced voltage is generated and the time when the second induced voltage is generated is less than the set time as the trigger condition, and preferably, the predetermined time may be taken from 20 milliseconds. Any value between 2000 milliseconds (2 seconds), for example, the set time is set to 400 milliseconds, and the two conductive objects are respectively inserted into the first jack 60 and the second jack 61 in the 400 milliseconds. Basically, it is difficult to complete, that is, two conductive objects are artificially inserted into the first insertion hole 60 and the second insertion hole 61 respectively, and the time for inserting the two conductive objects is substantially greater than 400 milliseconds, and then the insertion is performed. Even if the two conductive objects completely block the first optical channel and the second optical channel, the controller 30 does not issue a control signal, thereby ensuring that the first jack 60 and the second jack 61 of the power interface remain powered off.
  • the first pin 701 and the second pin 702 on the power plug 70 have the same length, the first pin 701 and the second pin 702 are inserted into the corresponding first jack 60 at the same time when inserted.
  • the second jack 61 so the difference between the time when the first induced voltage is generated and the time when the second induced voltage is generated is very small, and can satisfy the requirement of less than the set time, so when the first induced voltage is generated It can be determined that the first pin 701 and the second pin 702 of the power plug 70 are inserted into the corresponding first jack 60 and the second when the difference between the time of the second induced voltage and the time when the second induced voltage is generated is less than the set time.
  • the jack 61 at this time, the controller 30 outputs a control signal, that is, the relay unit 10 can be controlled to be closed, and the first jack 60 and the second jack 61 of the power interface are energized.
  • the power interface on/off control circuit of the embodiment is suitable for preventing the accidental insertion of electric shock in the above scenario 1 and the scene 2, and is also applicable to the following scene 3 to prevent accidental insertion of electric shock:
  • Scene 3 The first pin 701 and the second pin 702 are respectively inserted into the first jack 60 and the second jack 61:
  • the first jack 60 and the second jack 61 are respectively inserted into a metal needle of a large size (for example, 5 mm), although the two metals are in contact with the live wire connector 50 and the neutral wire connector 51, and are completely different. Blocking the first light path and the second light path, the first induced voltage generated by the first photosensitive receiving unit is greater than the first predetermined voltage, and the second induced voltage generated by the second photosensitive receiving unit is greater than the second predetermined voltage, however, Since the metal pins are respectively inserted successively, respectively, the time of insertion is greater than a predetermined time (for example, 400 milliseconds), at this time, the controller 30 does not output a control signal.
  • a predetermined time for example, 400 milliseconds
  • one end of the first arc tube LED1 is connected to the first DC power source VCC1 through the first resistor R1, and the other end of the first LED tube LED1 is grounded.
  • the first photosensitive receiving unit includes a first photoresistor RL1, a second resistor R2, a third resistor R3, and a seventh resistor R7.
  • One end of the first photoresistor RL1 is connected to the second DC power source through the second resistor R2.
  • the other end of the first photoresistor RL1 is grounded through the seventh resistor R7, and the seventh resistor R7 is connected to the node of the other end of the first photoresistor RL1 through the third resistor R3 The first signal input of the controller 30.
  • the second photosensitive receiving unit includes a second photoresistor RL2, a fifth a resistor R5, a sixth resistor R6, and an eighth resistor R8, wherein one end of the second photoresistor RL2 is connected to the second DC power source VCC2 through the fifth resistor R5, and the other end of the second photoresistor RL2 passes through
  • the eighth resistor R8 is grounded, and the node of the eighth resistor R8 and the other end of the second photoresistor RL2 is connected to the second signal input end of the controller 30 through the sixth resistor R6.
  • the resistance of the first photoresistor RL1 is increased, and the voltage is divided and sampled by the third resistor R3, and the sample is sampled.
  • the voltage (first induced voltage) is input to the first signal input of the controller 30.
  • the resistance of the second photoresistor RL2 is increased, and the voltage is divided and sampled by the sixth resistor R6, and the sampling voltage is applied.
  • the second induced voltage is input to the second signal input terminal of the controller 30, so that the controller 30 can obtain the first induced voltage and the second induced voltage.
  • the relay unit 10 includes a switch circuit 101, a relay 102, and a first diode D1, wherein the relay 102 includes a coil L, a first switch K1, and a second switch K2.
  • One end of the coil L is connected to the first DC power source VCC1, the other end of the coil L is connected to the first end of the switch circuit 101, the second end of the switch circuit 101 is grounded, and the switch circuit 101 is The control end is connected to the signal output end of the controller 30 to receive the control signal, and controls the coil L to be turned on according to the control signal, so that the first switch K1 and the second switch K2 are closed;
  • the first switch K1 is connected between the live wire connector 50 and the live wire output terminal of the external AC power source, and the second switch K2 is connected between the neutral wire connector 51 and the neutral wire output terminal of the external AC power source.
  • the first diode D1 is connected in parallel with the coil L.
  • the switch circuit 101 When the signal output end of the controller 30 outputs a control signal, the switch circuit 101 is turned on. At this time, the coil L generates a current. Correspondingly, the first switch K1 and the second switch K2 can be closed, and the live wire connector 50 communicates with the outside. The live line output terminal L of the power supply is turned on, and the neutral line connector 51 is connected to the neutral line output terminal N of the external AC power source.
  • the switch circuit 101 includes a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, and a first transistor Q1.
  • One end of the nine resistor R9 serves as a control end of the switch circuit 101, and the other end of the ninth resistor R9 is connected to one end of the tenth resistor R10 and the base of the first transistor Q1, the tenth resistor
  • the other end of R10 is connected to the emitter of the first transistor Q1
  • the emitter of the first three-stage tube Q1 serves as the second end of the switch circuit 101
  • the first three-stage tube Q1 The collector is connected to one end of the eleventh resistor R11, and the other end of the eleventh resistor R11 serves as a first end of the switch circuit 101.
  • the first transistor Q1 When the signal output end of the controller 30 outputs a control signal (for example, a high level), the first transistor Q1 is turned on, the coil L generates a current, and the first switch K1 and the second switch K2 can be closed, and the live wire connector 50 is closed. It is connected to the live line output terminal L of the external AC power source, and is connected between the neutral line connector 51 and the neutral line output terminal N of the external AC power source.
  • a control signal for example, a high level
  • an LED indicating circuit 40 is further included.
  • the LED indicating circuit 40 is connected to the controller 30, and indicates a power-on state of the power interface according to the control signal. That is, when the controller 30 outputs the control signal to control the relay unit 102 to be closed such that the power interface is energized, the LED indicating circuit 40 controlled by the control signal is also illuminated, thereby indicating that the power interface is in an energized state.
  • the LED indicating circuit 40 includes a twelfth resistor R12, a second transistor Q2, a third LED LED3, and a thirteenth resistor R13.
  • One end of the twelfth resistor R12 and the base of the second transistor Q2 are commonly connected to the signal output end of the controller 30, and the other end of the twelfth resistor R12 and the emitter of the second transistor Q2 are commonly grounded,
  • the collector of the two transistor Q2 is connected to one end of the thirteenth resistor R13 through the third LED LED3, and the other end of the thirteenth resistor R13 is connected to the first DC power source VCC1.
  • the signal output end of the controller 30 outputs a control signal
  • the second transistor Q2 is turned on, and the third light-emitting tube LED3 is turned on, thereby functioning as an indicator.
  • the controller 30 can adopt a single-chip microcomputer of the type SN8P2711B, and the P4.0/AIN0/AVREFH pin, the P4.1/AIN1 pin, the P4.2/AIN2 pin, and the P4.3/AIN3 lead of the MCU.
  • Any two of the pin and P4.4/AIN4 pins respectively correspond to the first signal output terminal and the second signal output terminal of the controller 30, and the P5.3/BZ1/PWM1 pin, P5.4/BZ0/ Any one of the PWM0 pins serves as a signal output terminal of the controller 30.
  • a power interface on/off control circuit according to another embodiment of the present invention is applied to a power supply device having a power interface including a first jack having a live wire connector 50. 60.
  • the power supply unit can be, but is not limited to, a socket, a socket, and the like.
  • the power interface on/off control circuit includes a relay unit 10, a first inductor 20, a second inductor 21, a third inductor 22, and a controller 30.
  • the relay unit 10 is configured to control the continuity between the live wire connector 50 and the live wire output terminal L of the external AC power source, and the neutral wire connector 61 communicates with the neutral wire output terminal N of the external AC power source. Breaking, and switching between the ground connection 52 and the ground terminal of the external AC power source.
  • the first sensor 20 is configured to detect whether the first pin 701 is inserted into the first jack 60
  • the second sensor 21 is configured to detect whether the second pin 702 is inserted into the second jack.
  • the three inductors 22 are configured to detect whether the third pin 703 is inserted into the third insertion hole 62.
  • the controller 30 is connected to the relay unit 10, the first inductor 20, the second inductor 21, and the third inductor 22, and inserts the first pin 701 into the first jack 60, the second When the second pin 702 is inserted into the jack and the third pin 703 is inserted into the third jack 62, the controller 30 outputs a control signal to control the relay unit 10 such that the live wire connector 50 Connected to the live line output terminal L of the external AC power source, the neutral line connector 61 is connected to the neutral line output terminal N of the external AC power source, and the ground wire connection member 52 is connected to the ground terminal E of the external AC power source. through.
  • the user can plug the power plug 70 on one end of the power cable of the power device with the power connector, that is, the first pin 701 on the power plug 70 is correspondingly inserted into the power connector.
  • the first jack 60 is in contact with the live wire connector 50 in the first jack 60
  • the second pin 702 on the power plug 70 is correspondingly inserted into the second jack 61 and with the neutral line in the second jack 61.
  • the connector 51 is in contact
  • the third pin 703 on the power plug 70 is correspondingly inserted into the third insertion hole 62 and is in contact with the ground connection 52 in the third insertion hole 62.
  • the first sensor 20 detects that the insertion of the first pin 701 generates a first sensing signal
  • the second sensor 2121 detects that the insertion of the second pin 702 generates a second sensing signal
  • the third sensor 22 detects the third.
  • the insertion of pin 703 produces a third sensing signal.
  • the controller 30 After receiving the first sensing signal, the second sensing signal and the third sensing signal, the controller 30 outputs a control signal, and the relay unit 10 is controlled to be closed by the control signal, so that the live wire connector 50 and the live line output of the external AC power source are connected.
  • L is turned on, the neutral connector 51 is connected to the neutral output terminal N of the external AC power source, and the ground connector 52 is connected to the ground terminal E of the external AC power source.
  • the first jack 60 of the power interface The second jack 61 can be energized
  • the third jack 62 can be grounded, and the alternating current is transmitted to the power plug 70 of the electric device through the hot wire connector 50 and the neutral
  • the present embodiment is different from the above embodiment in that, in this embodiment, the ground connection member 52 in the third insertion hole 62 and the third insertion hole 62 is correspondingly passed through the third sensor. 22, detecting whether the third pin 703 is inserted into the third jack 62.
  • the controller 30 outputs a control signal to control the relay unit 10 to be closed, so that the power interface is energized, so when another person (for example, a child) inserts a conductive object into the first jack 60 and the second jack. 61.
  • the power interface will not be energized. Therefore, there is no danger of electric shock, which can reduce the risk of electric shock when the child uses the conductive object to insert the plug, and greatly improve the power supply such as the socket. The safety of the device.
  • the first inductor 20 includes a first light emitting tube and a first light receiving unit, and the first light emitting tube and the first light receiving unit are oppositely mounted on the first jack 60. Side, and the first photosensitive receiving unit is connected to the controller 30.
  • the second inductor 21 includes a second light emitting tube and a second light receiving unit, the second light emitting tube and the second light receiving unit are oppositely mounted on opposite sides of the second jack, and the second photosensitive receiving unit Connected to the controller 30.
  • the third inductor 22 includes a third light emitting tube and a third light receiving unit, the third light emitting tube and the third light receiving unit are oppositely mounted on opposite sides of the third insertion hole 62, and the third photosensitive receiving The unit is connected to the controller 30.
  • a first light path is formed between the first light-emitting tube LED1 and the first photosensitive receiving unit
  • a second light path is formed between the second light-emitting tube LED2 and the second light-receiving unit
  • the third light-emitting tube and the third light-sensitive tube A third optical path is formed between the receiving units.
  • the first photosensitive receiving unit generates a first sensing signal, correspondingly, because the second pin 702 blocks the second The light path, therefore, the light emitted by the second LED LED2 cannot be received by the second photosensitive receiving unit.
  • the second photosensitive receiving unit generates the second sensing signal, and since the third pin 703 blocks the third optical path, The light emitted by the third light-emitting tube cannot be received by the second light-receiving receiving unit.
  • the third light-sensing receiving unit generates a third sensing signal, whereby the controller 30 generates the third sensing signal according to the first sensing signal and the second sensing signal.
  • the three sense signal generation control signals control the relay unit 10 to be closed to energize the power interface.
  • the first photosensitive receiving unit when the first pin 60 is inserted into the first pin 701, the second pin is inserted into the second pin, and the third jack
  • the third pin 703 When the third pin 703 is inserted into the 62, the first photosensitive receiving unit generates a first induced voltage, the second photosensitive receiving unit generates a second induced voltage, and the third photosensitive receiving unit generates a third induced voltage.
  • the controller 30 When the first induced voltage is greater than the first predetermined voltage, the second induced voltage is greater than the second predetermined voltage, and the third induced voltage is greater than the third predetermined voltage, the controller 30 outputs the control signal.
  • the sensing signals generated by the first photosensitive receiving unit, the second photosensitive receiving unit, and the third photosensitive receiving unit are induced voltages (voltage signals), and the conductive objects of different sizes and shapes are inserted into the first jack 60, In the second jack 61 or the third jack 62, since the blocking areas of the first light path, the second light path, and the third light path are different, the first sensing voltage generated by the first photosensitive receiving unit and the second The second induced voltage generated by the photosensitive receiving unit and the third induced voltage generated by the third photosensitive receiving unit are different. The larger the blocking area is, the larger the induced voltage is generated, and vice versa.
  • the size of the first optical channel, the second optical channel, and the third optical channel are blocked because the size and shape thereof are fixed. Is a certain, and generally different from the ordinary conductive object, so when the first pin 701 is inserted into the first jack 60, the first induced voltage generated by the first photosensitive receiving unit is substantially fixed, corresponding, When the second pin 702 is inserted into the second insertion hole 61, the second induced voltage generated by the second photosensitive receiving unit is substantially fixed, and when the third pin 703 is inserted into the third insertion hole 62, the third photosensitive receiving unit generates The third induced voltage section is fixed.
  • the size of the first pin 701, the second pin 702, and the third pin 703 on the power plug 70 are substantially matched with the first jack 60, the second jack 61, and the third jack 62.
  • the first pin 701, the second pin 702, and the third pin 703 of a standard power plug 70 are respectively inserted into the first jack 60, the second jack 61, and the third jack 62, the first pin 701 is inserted.
  • the first optical channel can be completely blocked
  • the second pin 702 can completely block the second optical channel
  • the third pin 703 can completely block the third optical channel.
  • the first The photosensitive receiving unit when the first pin 701 is inserted into the first jack 60, the first The photosensitive receiving unit generates an induced voltage greater than the first photosensitive receiving unit generates an induced voltage when the small conductive object is inserted into the first insertion hole 60, and the second photosensitive receiving unit generates the induced voltage when the second pin 702 is inserted into the second insertion hole 61
  • the second photosensitive receiving unit When the small conductive object is inserted into the second insertion hole 61, the second photosensitive receiving unit generates an induced voltage
  • the third pin 703 is inserted into the third insertion hole 62, the third photosensitive receiving unit generates an induced voltage greater than the small conductive object is inserted into the third Third photosensitive means receiving an induced voltage generated when the bore 62.
  • the first pin 701, the second pin 702, and the third pin 703 of the standard power plug 70 are respectively inserted into the first jack 60, the second jack 61, and the third jack 62, a first standard voltage generated by a photosensitive receiving unit, a second standard voltage generated by the second photosensitive receiving unit, and a third standard voltage generated by the third photosensitive receiving unit to set the first predetermined voltage, the second predetermined voltage, and the third
  • the preset voltage for example, when the first pin 701, the second pin 702, and the third pin 703 of the standard power plug 70 are correspondingly inserted into the first jack 60, the second jack 61, and the third jack 62, respectively.
  • the first standard voltage generated by the first photosensitive receiving unit, the second standard voltage generated by the second photosensitive receiving unit, and the third standard voltage generated by the third photosensitive receiving unit are both 2.0 volts, and the first predetermined voltage, the first The second preset top voltage of the two preset voltage machines is set to 1.8 volts.
  • the controller 30 When the first induced voltage generated by the first photosensitive receiving unit is greater than the first predetermined voltage, the second induced voltage generated by the second photosensitive receiving unit is greater than the second predetermined voltage, and the third induced voltage generated by the third photosensitive receiving unit is greater than
  • the controller 30 outputs a control signal to control the relay unit 10 to be closed, so that the first jack 60 and the second jack 61 of the power interface are energized, and the third jack 62 is grounded.
  • the first photosensitive receiving unit, the second photosensitive receiving unit, and the third photosensitive receiving unit are inserted into the first jack 60, the second jack 61 or the third jack for different sizes and shapes of conductive objects.
  • the characteristics of the induced voltage generated in the time of 62 are different, and by using the magnitudes of the first induced voltage, the second induced voltage, and the third induced voltage as the triggering conditions for the controller 30 to output the control signal, the safety of the power supply device can be further improved.
  • the first pin 701 is inserted into the first jack 60, the second pin is inserted into the second jack, and the third jack 62 is inserted.
  • the third pin 703 the first photosensitive receiving unit generates a first induced voltage, the second photosensitive receiving unit generates a second induced voltage, and the third photosensitive receiving unit generates a third induced voltage.
  • the first induced voltage is greater than the first preset voltage
  • the second induced voltage is greater than the second predetermined voltage
  • the third induced voltage is greater than the third predetermined voltage
  • the time of the first induced voltage is generated When a difference between a time when the first induced voltage is generated and a time when the third induced voltage is generated is less than a set time
  • the first induced voltage is greater than the first preset voltage
  • the second induced voltage is greater than the second predetermined voltage
  • the third induced voltage is greater than the third predetermined voltage
  • the first induced voltage is generated The difference between the time and the time at which the second induced voltage is generated, the difference between the time at which the first induced voltage is generated and the time at which the third induced voltage is generated, the second induced voltage
  • the difference between the time of the third induced voltage and the time of the third induced voltage is less than the set time
  • the controller 30 outputs the control signal.
  • the controller can be triggered to output a control signal in the following two cases:
  • the difference between the time and the time when the third induced voltage is generated is used as a trigger condition for the controller 30 to output a control signal, and only the first induced voltage is greater than the first predetermined voltage, and the second induced voltage is greater than the second a preset voltage, the third induced voltage is greater than the third predetermined voltage, and a difference between a time when the first induced voltage is generated and a time when the second induced voltage is generated, a time when the first induced voltage is generated, and the third sensing
  • the controller 30 outputs a control signal when the difference between the times when the voltages are generated is less than the set time.
  • the second case the first induced voltage, the second induced voltage, the magnitude of the third induced voltage, and the difference between the time generated by the first induced voltage and the time generated by the second induced voltage, the first induced voltage is generated
  • the difference between the time and the time when the third induced voltage is generated, and the difference between the time when the second induced voltage is generated and the time when the third induced voltage is generated is used as a trigger condition for the controller 30 to output the control signal.
  • the controller 30 outputs a control signal when the difference is less than the set time.
  • the controller 30 outputs a control signal such that the first jack 60 and the second jack 61 of the power interface are energized, then There is still a risk of electric shock in the situation.
  • the difference between the time when the first induced voltage is generated and the time when the second induced voltage is generated, the time when the first induced voltage is generated, and the time when the third induced voltage is generated The difference is less than the set time as the trigger condition, or the difference between the time when the first induced voltage is generated and the time when the second induced voltage is generated, the time when the first induced voltage is generated, and the third induced voltage are generated.
  • the difference between the time and the difference between the time when the second induced voltage is generated and the time when the third induced voltage is generated is less than the set time as the trigger condition.
  • the predetermined time may be taken from 20 milliseconds to Any value between 2000 milliseconds (2 seconds), for example, the set time is set to 400 milliseconds, then three conductive objects are respectively inserted into the first jack 60, the second jack 61, and the first 400 milliseconds.
  • the three jacks 62 are basically difficult to complete, that is, three conductive objects are artificially inserted into the first jack 60, the second jack 61, and the third jack 62, respectively, and any of the three conductive objects.
  • the time difference is basically greater than 400 milliseconds, and even if the two conductive objects completely block the first optical channel, the second optical channel, and the third optical channel after the insertion, the controller 30 does not issue a control signal, thereby ensuring the power supply.
  • the first jack 60 and the second jack 61 of the interface remain in a power down state.
  • the first pin 701, the second pin 702, and the third pin 703 on the power plug 70 are almost at the time of insertion. Simultaneously inserted into the corresponding first jack 60, the second jack 61 and the third jack 62, so the difference between the time generated by the first induced voltage and the time generated by the second induced voltage, the first sensing
  • the difference between the time when the voltage is generated and the time when the third induced voltage is generated, and the time between the time when the second induced voltage is generated and the time when the third induced voltage is generated are both very small and can satisfy Less than the set time requirement, so, the difference between the time when the first induced voltage is generated and the time when the second induced voltage is generated, the time when the first induced voltage is generated, and the time when the third induced voltage is generated When the difference is less than the set time, or the difference between the time when the first induced voltage is generated
  • the second pin 702 and the third pin 703 are inserted into the corresponding first jack 60, the second jack 61 and the third jack 62.
  • the controller 30 outputs a control signal, so that the relay unit 10 can be controlled to be closed.
  • the first jack 60 and the second jack 61 of the interface are energized, and the third jack 62 is grounded.
  • the present embodiment can further improve the security of its use.
  • a safety power supply device has the power interface on/off control circuit described in the above embodiments. It can be understood that the safety power supply device can be, but is not limited to, a socket or a socket or the like.
  • the safety power supply device has the above-mentioned power interface on/off control circuit, and therefore has higher security.

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Abstract

一种电源接口通断控制电路及安全电源装置，其中，该控制电路包括继电器单元(10)、第一感应器(20)、第二感应器(21)及控制器(30)，继电器单元(10)用以控制火线连接件(50)与外部交流电源的火线输出端之间的通断，以及零线连接件(51)与外部交流电源的零线输出端之间的通断；第一感应器(20)用以检测第一插孔内(60)是否插入第一插脚(701)，第二感应器(21)用以检测第二插孔(61)内是否插入第二插脚(702)；控制器(30)与继电器单元(10)、第一感应器(20)及第二感应器(21)相连，当第一插孔(60)内插入第一插脚(701)，第二插孔(61)内插入第二插脚(702)时，控制器(30)输出控制信号控制继电器单元(10)，使得火线连接件(50)与外部交流电源的火线输出端接通，以及零线连接件(51)与外部交流电源的零线输出端接通。前述控制电路及安全电源装置，可防止误插触电，安全性更高。

Description

电源接口通断控制电路及安全电源装置 技术领域
本发明涉及电源技术领域，特别涉及一种电源接口通断控制电路及安全电源装置。
背景技术
目前在交流插座/插排领域，绝大多数插排在通电之后各个插孔都有电，一般的安全插座/排插是采用的机械方式来做安全保护，可以在一般的情况下防止小孩手指插入的误触电，但不能避免小孩用导电物体插入插座/排插的触电情况，安全性低，非常容易引起触电等危险情况出现。
相关技术中公开了一种防触电安全插座，其主要是通过监测手指毛细血管的血容量随心脏搏动而改变的频率来判断是否有手指插入插座，其保护措施较为单一，很难避诸多的误触电情形。
发明内容
本发明旨在至少在一定程度上解决相关技术中的技术问题之一。为此，本发明的一个目的在于提出一种电源接口通断控制电路。
本发明的另一个目的在于提出一种安全电源装置。
为实现上述目的，一方面，根据本发明实施例的电源接口通断控制电路，应用于具有电源接口的电源装置中，所述电源接口包括具有火线连接件的第一插孔及具有零线连接件的第二插孔，所述电源接口通断控制电路包括：
继电器单元，用以控制所述火线连接件与外部交流电源的火线输出端之间的通断，以及所述零线连接件与外部交流电源的零线输出端之间的通断；
第一感应器和第二感应器，所述第一感应器用以检测所述第一插孔内是否插入第一插脚，所述第二感应器用以检测所述第二插孔内是否插入第二插脚；
控制器，所述控制器与所述继电器单元、第一感应器及第二感应器相连，当所述第一插孔内插入所述第一插脚，所述第二插孔内插入所述第二插脚时，所述控制器输出控制信号控制所述继电器单元，使得所述火线连接件与外部交流电源的火线输出端接通，以及所述零线连接件与外部交流电源的零线输出端接通。
根据本发明实施例提供的电源接口通断控制电路，通过第一感应器检测所述第一插孔内是否插入第一插脚，第二感应器检测所述第二插孔内是否插入第二插脚，当第一插孔内 插入第一插脚，第二插孔内插入第二插脚时，控制器输出控制信号控制继电器单元，通过继电器单元控制火线连接件与外部交流电源的火线输出端接通，以及零线连接件与外部交流电源的零线输出端接通，也就是说，只有第一插孔和第二插孔内均插入导电物件，才能够触发电源接口与外部交流电源接通，如此，可以降低儿童采用导电物件误插时的触电风险，极大地提高了插座等电源装置的安全性。
另外，根据本发明上述实施例的电源接口通断控制电路还可以具有如下附加的技术特征：
根据本发明的一个实施例，所述第一感应器包括第一发光管及第一光敏接收单元，所述第一发光管和第一光敏接收单元相对安装于所述第一插孔的两侧，且所述第一光敏接收单元与所述控制器相连；
所述第二感应器包括第二发光管及第二光敏接收单元，所述第二发光管和第二光敏接收单元相对安装于所述第二插孔的两侧，且所述第二光敏接收单元与所述控制器相连。
根据本发明的一个实施例，当所述第一插孔内插入所述第一插脚，所述第二插孔内插入所述第二插脚时，所述第一光敏接收单元产生第一感应电压，所述第二光敏接收单元产生第二感应电压；
当所述第一感应电压大于第一预设电压以及所述第二感应电压大于第二预设电压时，所述控制器输出所述控制信号。
根据本发明的一个实施例，当所述第一插孔内插入所述第一插脚，所述第二插孔内插入所述第二插脚时，所述第一光敏接收单元产生第一感应电压，所述第二光敏接收单元产生第二感应电压；
当所述第一感应电压大于第一预设电压，所述第二感应电压大于第二预设电压，以及所述第一感应电压产生的时间与所述第二感应电压产生的时间之间的差值小于设定时间，所述控制器输出所述控制信号。
根据本发明的一个实施例，所述第一发光管的一端通过第一电阻接第一直流电源，所述第一发光管的另一端接地，所述第一光敏接收单元包括第一光敏电阻、第二电阻、第三电阻及第七电阻，所述第一光敏电阻的一端通过所述第二电阻接第二直流电源，所述第一光敏电阻的另一端通过所述第七电阻接地，所述第七电阻与所述第一光敏电阻的所述另一端的节点通过所述第三电阻连接所述控制器的第一信号输入端；
所述第二发光管的一端通过第四电阻接所述第一直流电源，所述第二发光管的另一端接地，所述第二光敏接收单元包括第二光敏电阻、第五电阻、第六电阻及第八电阻，所述第二光敏 电阻的一端通过所述第五电阻接所述第二直流电源，所述第二光敏电阻的另一端通过所述第八电阻接地，所述第八电阻与所述第二光敏电阻的所述另一端的节点通过所述第六电阻连接所述控制器的第二信号输入端。
根据本发明的一个实施例，所述继电器单元包括：
开关电路；
继电器，所述继电器包括线圈、第一开关及第二开关，所述线圈的一端接第一直流电源，所述线圈的另一端连接所述开关电路的第一端，所述开关电路的第二端接地，所述开关电路的控制端连接所述控制器的信号输出端，以接收所述控制信号，并根据所述控制信号控制所述线圈接通，使得所述第一开关及第二开关闭合；所述第一开关连接于所述火线连接件与外部交流电源的火线输出端之间，所述第二开关连接于所述零线连接件与外部交流电源的零线输出端之间；
第一二极管，所述第一二极管与所述线圈并联。
根据本发明的一个实施例，所述开关电路包括第九电阻、第十电阻、第十一电阻及第一三极管，所述第九电阻的一端作为所述开关电路的控制端，所述第九电阻的另一端与所述第十电阻的一端及第一三极管的基极相连，所述第十电阻的另一端与所述第一三极管的发射极相连，所述第一三级管的发射极作为所述开关电路的第二端，所述的第一三级管的集电极与所述第十一电阻的一端相连，所述第十一电阻的另一端作为所述开关电路的第一端。
根据本发明的一个实施例，还包括LED指示电路，所述LED指示电路与所述控制器相连，根据所述控制信号指示所述电源接口的通电状态。
另一方面，根据本发明实施例的电源接口通断控制电路，应用于具有电源接口的电源装置中，所述电源接口包括具有火线连接件的第一插孔、具有零线连接件的第二插孔及具有地线连接件的第三插孔，所述电源接口通断控制电路包括：
继电器单元，用以控制所述火线连接件与外部交流电源的火线输出端之间的通断，所述零线连接件与外部交流电源的零线输出端之间的通断，以及所述地线连接件与外部交流电源的地线端之间的通断；
第一感应器、第二感应器和第三感应器，所述第一感应器用以检测所述第一插孔内是否插入第一插脚，所述第二感应器用以检测所述第二插孔内是否插入第二插脚，所述第三感应器用以检测所述第三插孔内是否插入第三插脚；
控制器，所述控制器与所述继电器单元、第一感应器、第二感应器及第三感应器相连，当所述第一插孔内插入所述第一插脚，所述第二插孔内插入所述第二插脚以及所述第三插孔内插 入所述第三插脚时，所述控制器输出控制信号控制所述继电器单元，使得所述火线连接件与外部交流电源的火线输出端接通，所述零线连接件与外部交流电源的零线输出端接通，以及所述地线连接件与外部交流电源的地线端接通。
根据本发明的一个实施例，所述第一感应器包括第一发光管及第一光敏接收单元，所述第一发光管和第一光敏接收单元相对安装于所述第一插孔的两侧，且所述第一光敏接收单元与所述控制器相连；
所述第二感应器包括第二发光管及第二光敏接收单元，所述第二发光管和第二光敏接收单元相对安装于所述第二插孔的两侧，且所述第二光敏接收单元与所述控制器相连；
所述第三感应器包括第三发光管及第三光敏接收单元，所述第三发光管和第三光敏接收单元相对安装于所述第三插孔的两侧，且所述第三光敏接收单元与所述控制器相连。
根据本发明的一个实施例，当所述第一插孔内插入所述第一插脚，所述第二插孔内插入所述第二插脚，以及所述第三插孔内插入所述第三插脚时，所述第一光敏接收单元产生第一感应电压，所述第二光敏接收单元产生第二感应电压，所述第三光敏接收单元产生第三感应电压；
当所述第一感应电压大于第一预设电压，所述第二感应电压大于第二预设电压，以及所述第三感应电压大于第三预设电压时，所述控制器输出所述控制信号。
根据本发明的一个实施例，当所述第一插孔内插入所述第一插脚，所述第二插孔内插入所述第二插脚，以及所述第三插孔内插入所述第三插脚时，所述第一光敏接收单元产生第一感应电压，所述第二光敏接收单元产生第二感应电压，所述第三光敏接收单元产生第三感应电压；
当所述第一感应电压大于第一预设电压，所述第二感应电压大于第二预设电压，所述第三感应电压大于第三预设电压，以及所述第一感应电压产生的时间与所述第二感应电压产生的时间之间的差值，所述第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值均小于设定时间时，
或者，当所述第一感应电压大于第一预设电压，所述第二感应电压大于第二预设电压，所述第三感应电压大于第三预设电压，以及所述第一感应电压产生的时间与所述第二感应电压产生的时间之间的差值，所述第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值，所述第二感应电压产的时间与所述第三感应电压产生的时间之间的差值均小于设定时间时，
所述控制器输出所述控制信号。
再一方面，根据本发明实施例的安全电源装置，具有如上所述电源接口通断控制电路。
根据本发明的一个实施例，所述安全电源装置为排插或插座。
根据本发明实施例提供的安全电源装置，具有上述的电源接口通断控制电路，因此，具有更高的安全性。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
图1是本发明一实施例电源接口通断控制电路的原理方框图；
图2是本发明一实施例电源接口通断控制电路的结构示意图；
图3是本发明一实施例电源装置与电源插头插接的结构示意图；
图4是本发明另一实施例电源接口通断控制电路的原理方框图
图5是本发明另一实施例电源装置与电源插头插接的结构示意图。
本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制，基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”“轴向”、“周向”、“径向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下面参照附图详细描述本发明实施例的电源接口通断控制电路。
参照图1至图3所示，根据本发明一个实施例提供的电源接口通断控制电路，应用于具有电源接口的电源装置中，所述电源接口包括具有火线连接件50的第一插孔60及具有零线连接件51的第二插孔61。可以理解的是，电源装置可以但不限于是排插、插座等。
具体的，该电源接口通断控制电路包括继电器单元10、第一感应器20、第二感应器21及控制器30。
其中，继电器单元10用以控制所述火线连接件50与外部交流电源的火线输出端L之间的通断，以及所述零线连接件51与外部交流电源的零线输出端N之间的通断。
第一感应器20用以检测所述第一插孔60内是否插入第一插脚701，所述第二感应器21用以检测所述第二插孔61内是否插入第二插脚702。在具体应用中，第一感应器20可以安装在第一插孔60附近，第二感应器21可以安装在第二插孔61附近，例如第一感应器20安装于第一插孔60的侧壁，第二感应器21安装与第二插孔61的侧壁。
控制器30与所述继电器单元10、第一感应器20及第二感应器21相连，当所述第一插孔60内插入所述第一插脚701，所述第二插孔61内插入所述第二插脚702时，所述控制器30输出控制信号控制所述继电器单元10，使得所述火线连接件50与外部交流电源的火线输出端L接通，以及所述零线连接件51与外部交流电源的零线输出端N接通。
当用电设备需要接入交流电时，用户可以将用电设备的电源线一端的电源插头70与电源接口相插接，也即是，电源插头70上的第一插脚701对应插入至电源接口上的第一插孔60并且与第一插孔60内的火线连接件50接触，电源插头70上的第二插脚702对应插入 至第二插孔61内并与第二插孔61内的零线连接件51接触。此时，第一感应器20检测到第一插脚701的插入产生第一感应信号，第二感应器21检测到第二插脚702的插入产生第二感应信号。控制器30接收到该第一感应信号和第二感应信号后，则输出控制信号，通过该控制信号控制继电器单元10闭合，使得火线连接件50与外部交流电源的火线输出端L接通，以及零线连接件51与外部交流电源的零线输出端N接通，如此，电源接口的第一插孔60和第二插孔61即可实现通电，交流电通过火线连接件50、零线连接件51传输至用电设备的电源插头70。
需要说明的是，由于控制器30是在第一感应器20和第二感应器21均产生感应信号时，才输出控制信号控制继电器单元10闭合，实现电源接口通电，所以，当他人(例如儿童)将一个导电物件插入至第一插孔60或第二插孔61中的任何一个时，电源接口不会通电，因此，不会造成触电危险。
根据本发明实施例提供的电源接口通断控制电路，通过第一感应器20检测所述第一插孔60内是否插入第一插脚701，第二感应器21检测所述第二插孔61内是否插入第二插脚702，当第一插孔60内插入第一插脚701，第二插孔61内插入第二插脚702时，控制器30输出控制信号控制继电器单元10，通过继电器单元10控制火线连接件50与外部交流电源的火线输出端L接通，以及零线连接件51与外部交流电源的零线输出端N接通，也就是说，只有第一插孔60和第二插孔61内均插入导电物件，才能够触发电源接口与外部交流电源接通，如此，可以降低儿童采用导电物件误插时的触电风险，极大地提高了插座等电源装置的安全性。
在本发明的一个实施例中，第一感应器20包括第一发光管LED1及第一光敏接收单元，所述第一发光管LED1和第一光敏接收单元相对安装于所述第一插孔60的两侧，且所述第一光敏接收单元与所述控制器30相连；第二感应器21包括第二发光管LED2及第二光敏接收单元，所述第二发光管LED2和第二光敏接收单元相对安装于所述第二插孔61的两侧，且所述第二光敏接收单元与所述控制器30相连。
也就是说，第一发光管LED1与第一光敏接收单元之间形成第一光通路，第二发光管LED2与第二光敏接收单元之间形成第二光通路。当所述第一插脚701插入至第一插孔60内及第二插脚702插入至第二插孔61内时，由于第一插脚701遮挡了第一光通路，所以，第一发光管LED1发出的光线无法被第一光敏接收单元接收到，此时，第一光敏接收单元产生第一感应信号，对应的，由于第二插脚702遮挡了第二光通路，所以，第二发光管LED2发出的光线无法被第二光敏接收单元接收到，此时，第二光敏接收单元产生第二感应信号， 由此，控制器30根据第一感应信号及第二感应信号产生控制信号控制继电器单元10闭合实现电源接口通电。
具体地，在本发明的一个实施例中，当所述第一插孔60内插入所述第一插脚701，所述第二插孔61内插入所述第二插脚702时，所述第一光敏接收单元产生第一感应电压，所述第二光敏接收单元产生第二感应电压。当所述第一感应电压大于第一预设电压以及所述第二感应电压大于第二预设电压时，所述控制器30输出所述控制信号。
也就是说，第一光敏接收单元和第二光敏接收单元产生的感应信号为感应电压(电压信号)，对于不同大小、形状的导电物件插入至第一插孔60或第二插孔61内时，由于对第一光通路、第二光通路的遮挡面积不同，所以，第一光敏接收单元产生的第一感应电压、第二光敏接收单元产生的第二感应电压是不同的，遮挡面积越大，则产生的感应电压越大，反之越小。而对于电源插头70上的第一插脚701和第二插脚702，由于其大小和形状是固定不变，对第一光通道、第二光通道的遮挡面积是一定的，而且一般不同于普通的导电物件，所以，第一插脚701插入至第一插孔60中时，第一光敏接收单元产生的第一感应电压基本上是固定的，对应的，第二插脚702插入至第二插孔61中时，第二光敏接收单元产生的第二感应电压基本上是固定的。
此外，由于电源插头70上的第一插脚701、第二插脚702的大小基本是与第一插孔60和第二插孔61相适配，所以，当一个标准的电源插头70的第一插脚701、第二插脚702分别对应插入至第一插孔60及第二插孔61内，则第一插脚701能够完全遮挡第一光通道，第二插脚702能够完全遮挡第二光通道，对应的，第一插脚701插入至第一插孔60内时第一光敏接收单元产生感应电压大于细小导电物件插入至第一插孔60内时第一光敏接收单元产生感应电压，第二插脚702插入至第二插孔61内时第二光敏接收单元产生感应电压大于细小导电物件插入至第二插孔61内时第二光敏接收单元产生感应电压。
由此，可以根据标准的电源插头70的第一插脚701、第二插脚702分别对应插入至第一插孔60和第二插孔61中时，第一光敏接收单元产生的第一标准电压和第二光敏接收单元产生的第二标准电压来设置第一预设电压和第二预设电压，例如：标准的电源插头70的第一插脚701、第二插脚702分别对应插入至第一插孔60和第二插孔61中时，第一光敏接收单元产生的第一标准电压和第二光敏接收单元产生的第二标准电压均为2.0伏，则可以将第一预设电压和第二预设电压设置为1.8伏。
当第一光敏接收单元产生的第一感应电压大于第一预设电压，第二光敏接收单元产生的第二感应电压大于第二预设电压时，则判断是标准的电源插头70的第一插脚701和第 二插脚702分别插入了第一插孔60和第二插孔61，此时，控制器30输出控制信号控制继电器单元10闭合即可使得电源接口的第一插孔60、第二插孔61通电。
在本实施例中，利用第一光敏接收单元和第二光敏接收单元对于不同大小、形状的导电物件插入至第一插孔60或第二插孔61内时产生的感应电压不同的特性，并通过以第一感应电压、第二感应电压的大小作为控制器30输出控制信号的触发条件，可以进一步提高电源装置的安全性。
下面示例性地列举可以防止误插触电的应用场景：
场景1：导电物件的尺寸小于标准的电源插头70上第一插脚701、第二插脚702的尺寸。
例如：第一插孔60插入一个尺寸较小(例如直径或宽度为1毫米)的导电物件，虽然该导电物件接触到了第一插孔60中的火线连接件50，但是，由于导电物件无法完全遮挡第一光通路，则第一光敏接收单元产生的第一感应电压(例如1.55伏)低于第一预设电压(例如1.8伏)，此时，控制器30不会输出控制信号，对应的，继电器单元10保持断开状态，火线连接件50与外部交流电源的火线输出端L断开，以及零线连接件51与外部交流电源的零线输出端N断开，电源接口断电。
同理，第二插孔61插入一个尺寸较小的导电物件，第二光敏接收单元产生的第二感应电压(例如1.55伏)低于第二预设电压(例如1.8伏)，此时，控制器30也不会输出控制信号。
第一插孔60和第二插孔61分别插入一个尺寸较小的导电物件，第一光敏接收单元产生的第一感应电压低于第一预设电压，第二光敏接收单元产生的第二感应电压低于第二预设电压，此时，控制器30也不会输出控制信号。
场景2：第一插孔60和第二插孔61中只有一个插入有导电物件。
例如：只在第一插孔60插入一个尺寸较大(例如直径或宽度为5毫米)的金属针，虽然金属针接触到了第一插孔60内的火线连接件50，而且金属针也能够完全遮挡第一光通路，第一光敏接收单元产生的第一感应电压也大于第一预设电压，但是，第二光敏接收单元没有感应电压，此时，控制器30不会输出控制信号。
同理，只在第二插孔61插入一个尺寸较大的金属针，第二光敏接收单元产生的第二感应电压大于第一预设电压，但是，第一光敏接收单元没有感应电压，此时，控制器30也不会输出控制信号。
在本发明的另一个实施例，当所述第一插孔60内插入所述第一插脚701，所述第二插孔61内插入所述第二插脚702时，所述第一光敏接收单元产生第一感应电压，所述第二 光敏接收单元产生第二感应电压。当所述第一感应电压大于第一预设电压，所述第二感应电压大于第二预设电压，以及所述第一感应电压产生的时间与所述第二感应电压产生的时间之间的差值小于设定时间，所述控制器30输出所述控制信号。
也就是说，本实施例中，以第一感应电压、第二感应电压的大小，以及第一感应电压产生的时间与所述第二感应电压产生的时间之间的差值共同作为控制器30输出控制信号的触发条件，只有同时满足第一感应电压大于第一预设电压，第二感应电压大于第二预设电压，以及第一感应电压产生的时间与第二感应电压产生的时间之间的差值小于设定时间，控制器30才输出控制信号。
由于在电源装置实际使用过程中，存在将两个导电物件先后分别插入至第一插孔60、第二插孔61中，且两个导电物件也刚好能够完全遮挡对应的第一光通道、第二光通道的情况，在此情况下，控制器30如果输出控制信号的，使得电源接口的第一插孔60和第二插孔61通电，则在此情况下仍然存在触电风险。
由此，本实施例中，增加第一感应电压产生的时间与第二感应电压产生的时间之间的差值小于设定时间作为触发条件，作为优选地，该预定时间可以为取自20毫秒至2000毫秒(2秒)之间的任意值，例如设定时间设置为400毫秒，则这400毫秒的时间内，将两个导电物件分别插入至第一插孔60、第二插孔61中基本上很难完成，也就是说，人为的将两个导电物件分别插入至第一插孔60、第二插孔61，其两个导电物件插入的时间基本上会大于400毫秒，则插入后即便是两个导电物件完全遮挡了第一光通道、第二光通道，控制器30也不会发出控制信号，进而确保电源接口的第一插孔60和第二插孔61保持断电状态。
而对于电源插头70而言，由于电源插头70上的第一插脚701和第二插脚702长度一致，在插入时第一插脚701和第二插脚702几乎是同时插入至对应的第一插孔60和第二插孔61内，所以，第一感应电压产生的时间与第二感应电压产生的时间之间的差值非常小，能够满足小于设定时间的要求，所以，当第一感应电压产生的时间与第二感应电压产生的时间之间的差值小于设定时间时，则可以判断为电源插头70的第一插脚701和第二插脚702插入至对应的第一插孔60和第二插孔61，此时，控制器30输出控制信号，即可控制继电器单元10闭合，实现电源接口的第一插孔60和第二插孔61通电。
本实施例的电源接口通断控制电路，在适用于上述场景1、场景2下起到防止误插触电的作用，同时，也适用于如下场景3下起到防止误插触电：
场景3：第一插脚701和第二插脚702分别插入第一插孔60和第二插孔61：
第一插孔60、第二插孔61先后分别插入一个尺寸较大(例如5毫米)的金属针，虽然两个 金属针对应接触到了火线连接件50、零线连接件51，而且也分别完全遮挡了第一光通路和第二光通路，第一光敏接收单元产生的第一感应电压大于第一预设电压，第二光敏接收单元产生的第二感应电压大于第二预设电压，但是，由于是分别先后插入的金属针，分别插入的时间大于预定时间(例如400毫秒)，此时，控制器30不会输出控制信号。
参照图2所示，具体地，在本发明的一个实施例中，第一发光管LED1的一端通过第一电阻R1接第一直流电源VCC1，所述第一发光管LED1的另一端接地，所述第一光敏接收单元包括第一光敏电阻RL1、第二电阻R2、第三电阻R3及第七电阻R7，所述第一光敏电阻RL1的一端通过所述第二电阻R2接第二直流电源VCC2，所述第一光敏电阻RL1的另一端通过所述第七电阻R7接地，所述第七电阻R7与所述第一光敏电阻RL1的所述另一端的节点通过所述第三电阻R3连接所述控制器30的第一信号输入端。
第二发光管LED2的一端通过第四电阻R4接所述第一直流电源VCC1，所述第二发光管LED2的另一端接地，所述第二光敏接收单元包括第二光敏电阻RL2、第五电阻R5、第六电阻R6及第八电阻R8，所述第二光敏电阻RL2的一端通过所述第五电阻R5接所述第二直流电源VCC2，所述第二光敏电阻RL2的另一端通过所述第八电阻R8接地，所述第八电阻R8与所述第二光敏电阻RL2的所述另一端的节点通过所述第六电阻R6连接所述控制器30的第二信号输入端。
当电源插头70的第一插脚701插入至第一插孔60内并遮挡第一光通道时，第一光敏电阻RL1的阻值增大，通过第三电阻R3进行分压并取样，并将取样电压(第一感应电压)输入至控制器30的第一信号输入端。对应的，当第二插脚702插入至第二插孔61内并遮挡第二光通道时，第二光敏电阻RL2的阻值增大，通过第六电阻R6进行分压并取样，并将取样电压(第二感应电压)输入至控制器30的第二信号输入端，如此，控制器30即可获得第一感应电压及第二感应电压。
参照图2所示，在本发明的一个实施例中，继电器单元10包括开关电路101、继电器102及第一二极管D1，其中，继电器102包括线圈L、第一开关K1及第二开关K2，所述线圈L的一端接第一直流电源VCC1，所述线圈L的另一端连接所述开关电路101的第一端，所述开关电路101的第二端接地，所述开关电路101的控制端连接所述控制器30的信号输出端，以接收所述控制信号，并根据所述控制信号控制所述线圈L接通，使得所述第一开关K1及第二开关K2闭合；所述第一开关K1连接于所述火线连接件50与外部交流电源的火线输出端之间，所述第二开关K2连接于所述零线连接件51与外部交流电源的零线输出端之间。第一二极管D1与所述线圈L并联。
当控制器30的信号输出端输出控制信号时，开关电路101导通，此时，线圈L产生电流，对应的，第一开关K1及第二开关K2即可闭合，火线连接件50与外部交流电源的火线输出端L之间接通，零线连接件51与外部交流电源的零线输出端N之间接通。
参照图2所示，更为具体地，在本发明的一个实施例中，开关电路101包括第九电阻R9、第十电阻R10、第十一电阻R11及第一三极管Q1，所述第九电阻R9的一端作为所述开关电路101的控制端，所述第九电阻R9的另一端与所述第十电阻R10的一端及第一三极管Q1的基极相连，所述第十电阻R10的另一端与所述第一三极管Q1的发射极相连，所述第一三级管Q1的发射极作为所述开关电路101的第二端，所述的第一三级管Q1的集电极与所述第十一电阻R11的一端相连，所述第十一电阻R11的另一端作为所述开关电路101的第一端。
当控制器30的信号输出端输出控制信号(例如高电平)时，第一三极管Q1导通，线圈L产生电流，第一开关K1及第二开关K2即可闭合，火线连接件50与外部交流电源的火线输出端L之间接通，零线连接件51与外部交流电源的零线输出端N之间接通。
参照图2所示，在本发明的一个实施例中，还包括LED指示电路40，所述LED指示电路40与所述控制器30相连，根据所述控制信号指示所述电源接口的通电状态。也就是说，当控制器30输出控制信号控制继电器102单元10闭合使得电源接口通电的同时，也通过该控制信号控制的LED指示电路40点亮，进而指示电源接口处于通电状态。
参照图2所示，更为具体的，在本发明的一个示例中，该LED指示电路40包括第十二电阻R12、第二三极管Q2、第三发光管LED3及第十三电阻R13，第十二电阻R12的一端及第二三极管Q2的基极共同连接至控制器30的信号输出端，第十二电阻R12的另一端及第二三极管Q2的发射极共同接地，第二三极管Q2的集电极通过第三发光管LED3连接至第十三电阻R13的一端，第十三电阻R13的另一端接第一直流电源VCC1。当控制器30的信号输出端输出控制信号时，第二三极管Q2导通，第三发光管LED3点亮，进而起到指示作用。
示例性的，控制器30可以采用型号为SN8P2711B的单片机，该单片机的P4.0/AIN0/AVREFH引脚、P4.1/AIN1引脚、P4.2/AIN2引脚、P4.3/AIN3引脚、P4.4/AIN4引脚中的任意两个分别对应作为控制器30的第一信号输出端和第二信号输出端，而P5.3/BZ1/PWM1引脚、P5.4/BZ0/PWM0引脚中任意一个作为控制器30的信号输出端。
参照图4至图5所示，根据本发明另一个实施例提供的电源接口通断控制电路，应用于具有电源接口的电源装置中，所述电源接口包括具有火线连接件50的第一插孔60、具 有零线连接件61的第二插孔及具有地线连接件52的第三插孔62。可以理解的是，电源装置可以但不限于是排插、插座等。
具体的，该电源接口通断控制电路包括继电器单元10、第一感应器20、第二感应器21、第三感应器22及控制器30。
其中，继电器单元10用以控制所述火线连接件50与外部交流电源的火线输出端L之间的通断，所述零线连接件61与外部交流电源的零线输出端N之间的通断，以及所述地线连接件52与外部交流电源的地线端之间的通断。
第一感应器20用以检测所述第一插孔60内是否插入第一插脚701，所述第二感应器21用以检测所述第二插孔内是否插入第二插脚702，所述第三感应器22用以检测所述第三插孔62内是否插入第三插脚703。
控制器30与所述继电器单元10、第一感应器20、第二感应器21及第三感应器22相连，当所述第一插孔60内插入所述第一插脚701，所述第二插孔内插入所述第二插脚702以及所述第三插孔62内插入所述第三插脚703时，所述控制器30输出控制信号控制所述继电器单元10，使得所述火线连接件50与外部交流电源的火线输出端L接通，所述零线连接件61与外部交流电源的零线输出端N接通，以及所述地线连接件52与外部交流电源的地线端E接通。
当用电设备需要接入交流电时，用户可以将用电设备的电源线一端的电源插头70与电源接口相插接，也即是，电源插头70上的第一插脚701对应插入至电源接口上的第一插孔60并且与第一插孔60内的火线连接件50接触，电源插头70上的第二插脚702对应插入至第二插孔61内并与第二插孔61内的零线连接件51接触，电源插头70上的第三插脚703对应插入至第三插孔62内并与第三插孔62内的地线连接件52接触。此时，第一感应器20检测到第一插脚701的插入产生第一感应信号，第二感应器2121检测到第二插脚702的插入产生第二感应信号，第三感应器22检测到第三插脚703的插入产生第三感应信号。控制器30接收到该第一感应信号、第二感应信号及第三感应信号后，则输出控制信号，通过该控制信号控制继电器单元10闭合，使得火线连接件50与外部交流电源的火线输出端L接通，零线连接件51与外部交流电源的零线输出端N接通，以及地线连接件52与外部交流电源的地线端E接通，如此，电源接口的第一插孔60、第二插孔61即可实现通电，第三插孔62即可实现接地，交流电通过火线连接件50、零线连接件51传输至用电设备的电源插头70。
需要说明的是，本实施例与上述实施例不同之处在于，本实施例中，具有第三插孔 62及第三插孔62内的地线连接件52，对应的，通过第三感应器22检测该第三插孔62内是否插入第三插脚703，如此，只有当第一插孔60、第二插孔及第三插孔62分别对应插入电源插头70的第一插脚701、第二插脚及第三插脚703时，控制器30才输出控制信号控制继电器单元10闭合，实现电源接口通电，所以，当他人(例如儿童)将一个导电物件插入至第一插孔60、第二插孔61、第三插孔62中的任何一个或两个时，电源接口不会通电，因此，不会造成触电危险，可以降低儿童采用导电物件误插时的触电风险，极大地提高了插座等电源装置的安全性。
在本发明的一个实施例中，第一感应器20包括第一发光管及第一光敏接收单元，所述第一发光管和第一光敏接收单元相对安装于所述第一插孔60的两侧，且所述第一光敏接收单元与所述控制器30相连。第二感应器21包括第二发光管及第二光敏接收单元，所述第二发光管和第二光敏接收单元相对安装于所述第二插孔的两侧，且所述第二光敏接收单元与所述控制器30相连。第三感应器22包括第三发光管及第三光敏接收单元，所述第三发光管和第三光敏接收单元相对安装于所述第三插孔62的两侧，且所述第三光敏接收单元与所述控制器30相连。
也就是说，第一发光管LED1与第一光敏接收单元之间形成第一光通路，第二发光管LED2与第二光敏接收单元之间形成第二光通路，第三发光管与第三光敏接收单元之间形成第三光通路。当所述第一插脚701插入至第一插孔60内、第二插脚702插入至第二插孔61以及第三插脚703插入至第三插孔62内时，由于第一插脚701遮挡了第一光通路，所以，第一发光管LED1发出的光线无法被第一光敏接收单元接收到，此时，第一光敏接收单元产生第一感应信号，对应的，由于第二插脚702遮挡了第二光通路，所以，第二发光管LED2发出的光线无法被第二光敏接收单元接收到，此时，第二光敏接收单元产生第二感应信号，由于第三插脚703遮挡了第三光通路，所以，第三发光管发出的光线无法被第二光敏接收单元接收到，此时，第三光敏接收单元产生第三感应信号，由此，控制器30根据第一感应信号、第二感应信号及第三感应信号产生控制信号控制继电器单元10闭合实现电源接口通电。
具体地，在本发明的一个实施例中，当所述第一插孔60内插入所述第一插脚701，所述第二插孔内插入所述第二插脚，以及所述第三插孔62内插入所述第三插脚703时，所述第一光敏接收单元产生第一感应电压，所述第二光敏接收单元产生第二感应电压，所述第三光敏接收单元产生第三感应电压。
当所述第一感应电压大于第一预设电压，所述第二感应电压大于第二预设电压，以 及所述第三感应电压大于第三预设电压时，所述控制器30输出所述控制信号。
也就是说，第一光敏接收单元、第二光敏接收单元及第三光敏接收单元产生的感应信号为感应电压(电压信号)，对于不同大小、形状的导电物件插入至第一插孔60、第二插孔61或第三插孔62内时，由于对第一光通路、第二光通路、第三光通路的遮挡面积不同，所以，第一光敏接收单元产生的第一感应电压、第二光敏接收单元产生的第二感应电压、第三光敏接收单元产生的第三感应电压是不同的，遮挡面积越大，则产生的感应电压越大，反之越小。而对于电源插头70上的第一插脚701、第二插脚702及第三插脚703，由于其大小和形状是固定不变，对第一光通道、第二光通道及第三光通道的遮挡面积是一定的，而且一般不同于普通的导电物件，所以，第一插脚701插入至第一插孔60中时，第一光敏接收单元产生的第一感应电压基本上是固定的，对应的，第二插脚702插入至第二插孔61中时，第二光敏接收单元产生的第二感应电压基本上是固定的，第三插脚703插入至第三插孔62中时，第三光敏接收单元产生的第三感应电压节本上是固定的。
此外，由于电源插头70上的第一插脚701、第二插脚702、第三插脚703的大小基本是与第一插孔60、第二插孔61、第三插孔62相适配，所以，当一个标准的电源插头70的第一插脚701、第二插脚702、第三插脚703分别对应插入至第一插孔60、第二插孔61及第三插孔62内，则第一插脚701能够完全遮挡第一光通道，第二插脚702能够完全遮挡第二光通道，第三插脚703能够完全遮挡第三光通道，对应的，第一插脚701插入至第一插孔60内时第一光敏接收单元产生感应电压大于细小导电物件插入至第一插孔60内时第一光敏接收单元产生感应电压，第二插脚702插入至第二插孔61内时第二光敏接收单元产生感应电压大于细小导电物件插入至第二插孔61内时第二光敏接收单元产生感应电压，第三插脚703插入至第三插孔62内时第三光敏接收单元产生感应电压大于细小导电物件插入至第三插孔62内时第三光敏接收单元产生的感应电压。
由此，可以根据标准的电源插头70的第一插脚701、第二插脚702及第三插脚703分别对应插入至第一插孔60、第二插孔61及第三插孔62中时，第一光敏接收单元产生的第一标准电压、第二光敏接收单元产生的第二标准电压及第三光敏接收单元产生的第三标准电压来设置第一预设电压、第二预设电压及第三预设电压，例如：标准的电源插头70的第一插脚701、第二插脚702及第三插脚703分别对应插入至第一插孔60、第二插孔61及第三插孔62中时，第一光敏接收单元产生的第一标准电压、第二光敏接收单元产生的第二标准电压及第三光敏接收单元产生的第三标准电压均为2.0伏，则可以将第一预设电压、第二预设电压机第三预设顶压均设置为1.8伏。
当第一光敏接收单元产生的第一感应电压大于第一预设电压，第二光敏接收单元产生的第二感应电压大于第二预设电压，以及第三光敏接收单元产生的第三感应电压大于第三预设电压时，则判断是标准的电源插头70的第一插脚701、第二插脚702及第三插脚703分别插入了第一插孔60、第二插孔61和第三插孔62，此时，控制器30输出控制信号控制继电器单元10闭合即可使得电源接口的第一插孔60、第二插孔61通电，第三插孔62接地。
在本实施例中，利用第一光敏接收单元、第二光敏接收单元及第三光敏接收单元对于不同大小、形状的导电物件插入至第一插孔60、第二插孔61或第三插孔62内时产生的感应电压不同的特性，并通过以第一感应电压、第二感应电压及第三感应电压的大小作为控制器30输出控制信号的触发条件，可以进一步提高电源装置的安全性。
在本发明的另一个实施例，当所述第一插孔60内插入所述第一插脚701，所述第二插孔内插入所述第二插脚，以及所述第三插孔62内插入所述第三插脚703时，所述第一光敏接收单元产生第一感应电压，所述第二光敏接收单元产生第二感应电压，所述第三光敏接收单元产生第三感应电压。
当所述第一感应电压大于第一预设电压，所述第二感应电压大于第二预设电压，所述第三感应电压大于第三预设电压，以及所述第一感应电压产生的时间与所述第二感应电压产生的时间之间的差值，所述第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值均小于设定时间时，
或者，当所述第一感应电压大于第一预设电压，所述第二感应电压大于第二预设电压，所述第三感应电压大于第三预设电压，以及所述第一感应电压产生的时间与所述第二感应电压产生的时间之间的差值，所述第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值，所述第二感应电压产的时间与所述第三感应电压产生的时间之间的差值均小于设定时间时，
所述控制器30输出所述控制信号。
也就是说，本实施例中，控制器在以下两种情况下可以被触发进而输出控制信号：
第一种情况：以第一感应电压、第二感应电压、第三感应电压的大小，以及第一感应电压产生的时间与第二感应电压产生的时间之间的差值、第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值共同作为控制器30输出控制信号的触发条件，只有同时满足第一感应电压大于第一预设电压，第二感应电压大于第二预设电压，第三感应电压大于第三预设电压，以及第一感应电压产生的时间与第二感应电压产生的时间之间的差值、第一感应电 压产生的时间与所述第三感应电压产生的时间之间的差值均小于设定时间时，控制器30才输出控制信号。
第二种情况：以第一感应电压、第二感应电压、第三感应电压的大小，以及第一感应电压产生的时间与第二感应电压产生的时间之间的差值、第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值、和第二感应电压产生的时间与第三感应电压产生的时间之间的差值共同作为控制器30输出控制信号的触发条件，只有同时满足第一感应电压大于第一预设电压，第二感应电压大于第二预设电压，第三感应电压大于第三预设电压，以及第一感应电压产生的时间与第二感应电压产生的时间之间的差值、第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值、和第二感应电压产生的时间与第三感应电压产生的时间之间的差值均小于设定时间时，控制器30才输出控制信号。
由于在电源装置实际使用过程中，存在将三个导电物件先后分别插入至第一插孔60、第二插孔61及第三插孔62中，且三个导电物件也刚好能够完全遮挡对应的第一光通道、第二光通道及第三光通道的情况，在此情况下，控制器30如果输出控制信号，使得电源接口的第一插孔60和第二插孔61通电，则在此情况下仍然存在触电风险。
由此，本实施例中，增加第一感应电压产生的时间与第二感应电压产生的时间之间的差值、第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值均小于设定时间作为触发条件，或者增加第一感应电压产生的时间与第二感应电压产生的时间之间的差值、第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值及第二感应电压产生的时间与第三感应电压产生的时间之间的差值均小于设定时间作为触发条件，作为优选地，该预定时间可以为取自20毫秒至2000毫秒(2秒)之间的任意值，例如设定时间设置为400毫秒，则这400毫秒的时间内，将三个导电物件分别插入至第一插孔60、第二插孔61、第三插孔62中基本上很难完成，也就是说，人为的将三个导电物件分别插入至第一插孔60、第二插孔61及第三插孔62，其三个导电物件中任意两个插入的时间差值基本上会大于400毫秒，则插入后即便是两个导电物件完全遮挡了第一光通道、第二光通道及第三光通道，控制器30也不会发出控制信号，进而确保电源接口的第一插孔60和第二插孔61保持断电状态。
而对于电源插头70而言，由于电源插头70上的第一插脚701、第二插脚702及第三插脚703长度一致，在插入时第一插脚701、第二插脚702及第三插脚703几乎是同时插入至对应的第一插孔60、第二插孔61及第三插孔62内，所以，第一感应电压产生的时间与第二感应电压产生的时间之间的差值、第一感应电压产生的时间与所述第三感应电压产生的 时间之间的差值、和第二感应电压产生的时间与第三感应电压产生的时间之间的差值均是非常小的，均能够满足小于设定时间的要求，所以，当第一感应电压产生的时间与第二感应电压产生的时间之间的差值、第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值均小于设定时间时，或者，当第一感应电压产生的时间与第二感应电压产生的时间之间的差值、第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值，以及第二感应电压产生的时间与第三感应电压产生的时间之间的差值均小于设定值时，则均可以判断为电源插头70的第一插脚701、第二插脚702及第三插脚703插入至对应的第一插孔60、第二插孔61及第三插孔62，此时，控制器30输出控制信号，即可控制继电器单元10闭合，实现电源接口的第一插孔60和第二插孔61通电，第三插孔62接地。由此，本实施例可以进一步提高其使用的安全性。
需要说明的是，本实施例中继电器单元、第一感应器20、第二感应器21、第三感应器22及控制器30的具体结构及工作原理与图1实施例类似，具体可以参见上述实施例中的相关说明，在此不再赘述。
根据本发明实施例的安全电源装置，具有上述实施例所述的电源接口通断控制电路。可以理解的是，安全电源装置可以但不限于是排插或插座等。
根据本发明实施例提供的安全电源装置，具有上述的电源接口通断控制电路，因此，具有更高的安全性。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是在本发明的发明构思下，利用本发明说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。

Claims (14)

  1. 一种电源接口通断控制电路，应用于具有电源接口的电源装置中，所述电源接口包括具有火线连接件的第一插孔及具有零线连接件的第二插孔，其特征在于，所述电源接口通断控制电路包括：
    继电器单元，用以控制所述火线连接件与外部交流电源的火线输出端之间的通断，以及所述零线连接件与外部交流电源的零线输出端之间的通断；
    第一感应器和第二感应器，所述第一感应器用以检测所述第一插孔内是否插入第一插脚，所述第二感应器用以检测所述第二插孔内是否插入第二插脚；
    控制器，所述控制器与所述继电器单元、第一感应器及第二感应器相连，当所述第一插孔内插入所述第一插脚，所述第二插孔内插入所述第二插脚时，所述控制器输出控制信号控制所述继电器单元，使得所述火线连接件与外部交流电源的火线输出端接通，以及所述零线连接件与外部交流电源的零线输出端接通。
  2. 根据权利要求1所述的电源接口通断控制电路，其特征在于，所述第一感应器包括第一发光管及第一光敏接收单元，所述第一发光管和第一光敏接收单元相对安装于所述第一插孔的两侧，且所述第一光敏接收单元与所述控制器相连；
    所述第二感应器包括第二发光管及第二光敏接收单元，所述第二发光管和第二光敏接收单元相对安装于所述第二插孔的两侧，且所述第二光敏接收单元与所述控制器相连。
  3. 根据权利要求2所述的电源接口通断控制电路，其特征在于，当所述第一插孔内插入所述第一插脚，所述第二插孔内插入所述第二插脚时，所述第一光敏接收单元产生第一感应电压，所述第二光敏接收单元产生第二感应电压；
    当所述第一感应电压大于第一预设电压以及所述第二感应电压大于第二预设电压时，所述控制器输出所述控制信号。
  4. 根据权利要求2所述的电源接口通断控制电路，其特征在于，当所述第一插孔内插入所述第一插脚，所述第二插孔内插入所述第二插脚时，所述第一光敏接收单元产生第一感应电压，所述第二光敏接收单元产生第二感应电压；
    当所述第一感应电压大于第一预设电压，所述第二感应电压大于第二预设电压，以及所述第一感应电压产生的时间与所述第二感应电压产生的时间之间的差值小于设定时间，所述控制器输出所述控制信号。
  5. 根据权利要求2所述的电源接口通断控制电路，其特征在于，所述第一发光管的一端通过第一电阻接第一直流电源，所述第一发光管的另一端接地，所述第一光敏接收单元包括第一光敏电阻、第二电阻、第三电阻及第七电阻，所述第一光敏电阻的一端通过所述第二电阻 接第二直流电源，所述第一光敏电阻的另一端通过所述第七电阻接地，所述第七电阻与所述第一光敏电阻的所述另一端的节点通过所述第三电阻连接所述控制器的第一信号输入端；
    所述第二发光管的一端通过第四电阻接所述第一直流电源，所述第二发光管的另一端接地，所述第二光敏接收单元包括第二光敏电阻、第五电阻、第六电阻及第八电阻，所述第二光敏电阻的一端通过所述第五电阻接所述第二直流电源，所述第二光敏电阻的另一端通过所述第八电阻接地，所述第八电阻与所述第二光敏电阻的所述另一端的节点通过所述第六电阻连接所述控制器的第二信号输入端。
  6. 根据权利要求1所述的电源接口通断控制电路，其特征在于，所述继电器单元包括：
    开关电路；
    继电器，所述继电器包括线圈、第一开关及第二开关，所述线圈的一端接第一直流电源，所述线圈的另一端连接所述开关电路的第一端，所述开关电路的第二端接地，所述开关电路的控制端连接所述控制器的信号输出端，以接收所述控制信号，并根据所述控制信号控制所述线圈接通，使得所述第一开关及第二开关闭合；所述第一开关连接于所述火线连接件与外部交流电源的火线输出端之间，所述第二开关连接于所述零线连接件与外部交流电源的零线输出端之间；
    第一二极管，所述第一二极管与所述线圈并联。
  7. 根据权利要求6所述的电源接口通断控制电路，其特征在于，所述开关电路包括第九电阻、第十电阻、第十一电阻及第一三极管，所述第九电阻的一端作为所述开关电路的控制端，所述第九电阻的另一端与所述第十电阻的一端及第一三极管的基极相连，所述第十电阻的另一端与所述第一三极管的发射极相连，所述第一三级管的发射极作为所述开关电路的第二端，所述的第一三级管的集电极与所述第十一电阻的一端相连，所述第十一电阻的另一端作为所述开关电路的第一端。
  8. 根据权利要求1所述的电源接口通断控制电路，其特征在于，还包括LED指示电路，所述LED指示电路与所述控制器相连，根据所述控制信号指示所述电源接口的通电状态。
  9. 一种电源接口通断控制电路，应用于具有电源接口的电源装置中，所述电源接口包括具有火线连接件的第一插孔、具有零线连接件的第二插孔及具有地线连接件的第三插孔，其特征在于，所述电源接口通断控制电路包括：
    继电器单元，用以控制所述火线连接件与外部交流电源的火线输出端之间的通断，所述零线连接件与外部交流电源的零线输出端之间的通断，以及所述地线连接件与外部交流电源的地线端之间的通断；
    第一感应器、第二感应器和第三感应器，所述第一感应器用以检测所述第一插孔内是否插入第一插脚，所述第二感应器用以检测所述第二插孔内是否插入第二插脚，所述第三感应器用以检测所述第三插孔内是否插入第三插脚；
    控制器，所述控制器与所述继电器单元、第一感应器、第二感应器及第三感应器相连，当所述第一插孔内插入所述第一插脚，所述第二插孔内插入所述第二插脚以及所述第三插孔内插入所述第三插脚时，所述控制器输出控制信号控制所述继电器单元，使得所述火线连接件与外部交流电源的火线输出端接通，所述零线连接件与外部交流电源的零线输出端接通，以及所述地线连接件与外部交流电源的地线端接通。
  10. 根据权利要求9所述的电源接口通断控制电路，其特征在于，所述第一感应器包括第一发光管及第一光敏接收单元，所述第一发光管和第一光敏接收单元相对安装于所述第一插孔的两侧，且所述第一光敏接收单元与所述控制器相连；
    所述第二感应器包括第二发光管及第二光敏接收单元，所述第二发光管和第二光敏接收单元相对安装于所述第二插孔的两侧，且所述第二光敏接收单元与所述控制器相连；
    所述第三感应器包括第三发光管及第三光敏接收单元，所述第三发光管和第三光敏接收单元相对安装于所述第三插孔的两侧，且所述第三光敏接收单元与所述控制器相连。
  11. 根据权利要求10所述的电源接口通断控制电路，其特征在于，当所述第一插孔内插入所述第一插脚，所述第二插孔内插入所述第二插脚，以及所述第三插孔内插入所述第三插脚时，所述第一光敏接收单元产生第一感应电压，所述第二光敏接收单元产生第二感应电压，所述第三光敏接收单元产生第三感应电压；
    当所述第一感应电压大于第一预设电压，所述第二感应电压大于第二预设电压，以及所述第三感应电压大于第三预设电压时，所述控制器输出所述控制信号。
  12. 根据权利要求10所述的电源接口通断控制电路，其特征在于，当所述第一插孔内插入所述第一插脚，所述第二插孔内插入所述第二插脚，以及所述第三插孔内插入所述第三插脚时，所述第一光敏接收单元产生第一感应电压，所述第二光敏接收单元产生第二感应电压，所述第三光敏接收单元产生第三感应电压；
    当所述第一感应电压大于第一预设电压，所述第二感应电压大于第二预设电压，所述第三感应电压大于第三预设电压，以及所述第一感应电压产生的时间与所述第二感应电压产生的时间之间的差值，所述第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值均小于设定时间时，
    或者，当所述第一感应电压大于第一预设电压，所述第二感应电压大于第二预设电压，所述 第三感应电压大于第三预设电压，以及所述第一感应电压产生的时间与所述第二感应电压产生的时间之间的差值，所述第一感应电压产生的时间与所述第三感应电压产生的时间之间的差值，所述第二感应电压产的时间与所述第三感应电压产生的时间之间的差值均小于设定时间时，
    所述控制器输出所述控制信号。
  13. 一种安全电源装置，其特征在于，具有如权利要求1至12中任一项所述电源接口通断控制电路。
  14. 根据权利要求13所述的安全电源装置，其特征在于，所述安全电源装置为排插或插座。
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