CN107124175B - Two-way USB control circuit - Google Patents

Two-way USB control circuit Download PDF

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Publication number
CN107124175B
CN107124175B CN201710198310.2A CN201710198310A CN107124175B CN 107124175 B CN107124175 B CN 107124175B CN 201710198310 A CN201710198310 A CN 201710198310A CN 107124175 B CN107124175 B CN 107124175B
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pin
pole double
nlas52223
analog switch
throw analog
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CN107124175A (en
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刘昌昊
李恒
谭洁
张国银
赵磊
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/40—Bus structure
    • G06F13/4063—Device-to-bus coupling
    • G06F13/4068—Electrical coupling
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0042—Universal serial bus [USB]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)
  • Power Sources (AREA)

Abstract

The invention relates to a two-way USB control circuit, and belongs to the technical field of electronics. The invention comprises USB1, USB2, a relay, a single-pole double-throw analog switch I, a single-pole double-throw analog switch II, a logic control circuit, a touch switch, a JK trigger, a 555 monostable trigger circuit and a Micro USB. The invention solves the problem of low working efficiency caused by frequently plugging and unplugging the USB port to switch the connection object when a certain device is connected with other two devices through the USB data line.

Description

Two-way USB control circuit
Technical Field
The invention provides a two-way USB control circuit, and belongs to the technical field of electronics.
Background
At present, people connect devices through a USB data line quite frequently, but one device is often required to be connected and switched between two devices, at this time, a connection object is required to be switched by plugging and unplugging a USB port, and the service life of the interface of the frequently plugged and unplugged USB device is shortened, and the working efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problems that: the invention provides a two-way USB control circuit, which solves the problem of low working efficiency caused by the fact that when a device is connected with other two devices by utilizing a USB data line, a USB port is required to be plugged and plugged to switch the connection object by touching a switch to switch the connection object of the device.
The technical scheme adopted by the invention is as follows: a two-way USB control circuit comprises USB1, USB2, a relay 1, a single-pole double-throw analog switch I2, a single-pole double-throw analog switch II 3, a logic control circuit 4, a touch switch 5, a JK trigger 6, a 555 monostable trigger circuit 7 and a Micro USB;
the single-pole double-throw analog switch I2 and the single-pole double-throw analog switch II 3 are respectively NLAS52223 single-pole double-throw analog switches, and after the 1 pin of the NLAS52223 single-pole double-throw analog switch I2 is connected with the 1 pin and the 10 pin of the NLAS52223 single-pole double-throw analog switch II 3, the 1 pin and the 10 pin are simultaneously connected with one ends of a normally closed contact J1 and a normally open contact J2 of a relay 1, and the other ends of the normally closed contact J1 and the normally open contact J2 of the relay 1 are respectively connected with the 1 pin of a USB1 and the 1 pin of the USB 2;
one end of the relay 1 is connected with the 1 pin of the USB2, the other end of the relay is connected with the 4 pin of the USB2, the 4 pin of the USB2 is connected with the anode of the diode D2, and the cathode of the diode D2 is connected with the 1 pin of the USB 2; the 2-foot and 3-foot of the USB1 are respectively connected with the 2-foot of the NLAS52223 single-pole double-throw analog switch I2 and the 2-foot of the NLAS52223 single-pole double-throw analog switch II 3, the 3-foot of the NLAS52223 single-pole double-throw analog switch I2 and the 3-foot of the NLAS52223 single-pole double-throw analog switch II 3 are respectively connected with the 2-foot and the 3-foot of the Micro USB, the 4-foot and 8-foot of the NLAS52223 single-pole double-throw analog switch I2 and the 4-foot of the NLAS52223 single-pole double-throw analog switch II 3 are connected with the output end of the logic control circuit 4, the 5-foot of the NLAS52223 single-pole double-throw analog switch I2 and the 5-foot of the NLAS52223 single-pole double-throw analog switch II 3 are respectively connected with the 2-foot and 3-foot of the USB2, the 6-foot of the NLAS52223 single-pole double-throw analog switch I2 and the 6-foot of the NLAS52223 single-throw analog switch II 3 are simultaneously grounded, the 7-foot of the NLAS52223 single-pole double-throw analog switch I2 is connected with the 1-foot of the USB2, and the 1-foot of the NLAS52223 single-pole double-throw analog switch II 2 is connected with the USB1, and the 1-foot is connected with the USB 1;
the touch switch 5 is connected with a CP end of the JK trigger 6 through a resistor R1, the J end and the K end of the JK trigger 6 are simultaneously connected with a 9 pin of the NLAS52223 single-pole double-throw analog switch II 3 and a 4 pin of a 555 monostable trigger circuit, the Q' end of the JK trigger 6 is simultaneously connected with a2 pin and a 6 pin of the 555 monostable trigger circuit 7 through a resistor R2, the Q end of the JK trigger 6 is suspended, the 4 pin and the 8 pin of the 555 monostable trigger circuit 7 are connected with the 7 pin of the 555 monostable trigger circuit through a resistor R3, the 5 pin of the 555 monostable trigger circuit 7 is connected with the 4 pin of a Micro USB through a capacitor C, and the 3 pin of the 555 monostable trigger circuit 7 is connected with the output end of the logic control circuit 4.
Specifically, the logic control circuit 4 includes and gates A1, A2, an inverter N1, and a diode D1; the two input ends of the AND gate A1 are respectively connected with the 1 pin of the USB1 and the 1 pin of the USB2, the output end of the AND gate A1 is connected with the 8 pin of the NLAS52223 single-pole double-throw analog switch II 3, the 9 pin of the NLAS52223 single-pole double-throw analog switch II 3 is connected with one input end of the AND gate A2 through the NOT gate N1, the other input end of the AND gate A2 is connected with the 1 pin of the USB1, the output end of the AND gate A2 is connected with the anode of the diode D1, and the cathode of the diode D1 is used as the output end of the logic control circuit 4.
The working principle of the invention is as follows: when the Micro USB of the two USB control circuits charges or transmits data to the equipment, and the USB1 and the USB2 are not connected with the computer and the normal power adapter, the USB switching control circuit does not work, namely, the USB switching control circuit neither charges a certain equipment nor transmits data to the certain equipment;
when the equipment is connected with a PC through USB1 of two paths of USB control circuits, a normally closed contact of a relay is closed, a normally open contact is opened, power is supplied to NLAS52223 single-pole double-throw analog switches I and NLAS52223 single-pole double-throw analog switches II and a logic control circuit, the output of a logic AND gate A1 is low level, namely 8 pin of the NLAS52223 single-pole double-throw analog switch II is low level, 9 pin of the logic AND gate A1 is connected with 7 pin, power is not supplied to a 555 timer, furthermore, the output of the logic AND gate A2 is high level, namely 8 pin, 4 pin of the NLAS52223 single-pole double-throw analog switch I and 4 pin of the NLAS52223 single-pole double-throw analog switch II are high level, 3 pin of the NLAS52223 single-pole double-throw analog switch I is connected with 2 pin, 9 pin of the NLAS52223 single-pole double-throw analog switch II is connected with 2 pin, and finally, the two paths of USB control circuits communicate USB1 with the Micro USB, and connection of the PC and the equipment is realized;
when the equipment is connected with a power adapter through USB2 of two paths of USB control circuits, a normally closed contact of a relay is opened, a normally open contact is closed, power is supplied to NLAS52223 single-pole double-throw analog switch I, NLAS52223 single-pole double-throw analog switch II and a logic control circuit, the output of a logic AND gate A1 is low level, namely the 8 pin of the NLAS52223 single-pole double-throw analog switch II is low level, the 9 pin of the logic AND gate A1 is connected with the 7 pin, the power is not supplied to a 555 timer, furthermore, the output of the logic AND gate A2 is low level, namely the 8 pin, the 4 pin of the NLAS52223 single-pole double-throw analog switch I and the 4 pin of the NLAS52223 single-pole double-throw analog switch II are low level, the 3 pin of the NLAS52223 single-pole double-throw analog switch I is connected with the 5 pin, the 9 pin is connected with the 7 pin, and finally, the two paths of USB control circuits are communicated with the USB2 and the Micro USB, and the connection of the power adapter and the equipment is realized;
when the equipment is connected with a PC (personal computer) and a USB2 through USB1 of two paths of USB control circuits, the normally closed contact of the relay is opened, the normally open contact is closed, power is supplied to NLAS52223 single-pole double-throw analog switch I, NLAS52223 single-pole double-throw analog switch II and the logic control circuit, the output of the logic AND gate A1 is high, namely the 8 pin of the NLAS52223 single-pole double-throw analog switch II is high, the 9 pin is connected with the 10 pin, the power is supplied to a 555 timer, when the touch switch is not clicked, the output of the 555 monostable trigger circuit is low, the output of the logic AND gate A2 is low, namely the 8 pin, the 4 pin and the 4 pin of the NLAS52223 single-pole double-throw analog switch II are low, the 3 pin and the 5 pin of the NLAS52223 single-pole double-throw analog switch I are connected, the 9 pin and the 7 pin are connected, and finally, the two paths of the USB control circuit is used for connecting the USB2 with the USB adapter;
when the touch switch is clicked for the first time, the output of the 555 monostable trigger circuit is high level, the output of the logic AND gate A2 is low level, namely the 8 pin and the 4 pin of the NLAS52223 single-pole double-throw analog switch I and the 4 pin of the NLAS52223 single-pole double-throw analog switch II are high level, the 3 pin and the 2 pin of the NLAS52223 single-pole double-throw analog switch I are connected, the 9 pin and the 10 pin are connected, the 3 pin and the 2 pin of the NLAS52223 single-pole double-throw analog switch II are connected, finally, the two paths of USB control circuits are used for communicating USB1 with Micro USB, and the connection between a PC and equipment is realized;
when the touch switch is clicked for the second time, the output of the 555 monostable trigger circuit is low level, the output of the logic AND gate A2 is low level, namely the 8 pin and the 4 pin of the NLAS52223 single-pole double-throw analog switch I and the 4 pin of the NLAS52223 single-pole double-throw analog switch II are low level, the 3 pin and the 5 pin of the NLAS52223 single-pole double-throw analog switch I are connected, the 9 pin and the 7 pin are connected, the 3 pin and the 5 pin of the NLAS52223 single-pole double-throw analog switch II are connected, finally, the two USB control circuits are communicated with the Micro USB by the USB2, and the connection of a power adapter and equipment is realized.
The beneficial effects of the invention are as follows:
the invention provides a two-way USB control circuit, which solves the problem of low working efficiency caused by the fact that when a device is connected with other two devices by utilizing a USB data line, a USB port is required to be plugged and plugged to switch the connection object by touching a switch to switch the connection object of the device.
Drawings
Fig. 1 is a schematic diagram of the circuit principle of the present invention.
The reference numerals in fig. 1: 1-relay, 2-NLAS52223 single-pole double-throw analog switch I, 3-NLAS 52223 single-pole double-throw analog switch Guan, 4-logic control circuit, 5-touch switch, 6-JK trigger and 7-555 monostable trigger circuit.
Detailed Description
Example 1: as shown in FIG. 1, the two-way USB control circuit comprises a USB1, a USB2, a relay 1, a single-pole double-throw analog switch I2, a single-pole double-throw analog switch II 3, a logic control circuit 4, a touch switch 5, a JK trigger 6, a 555 monostable trigger circuit 7 and a Micro USB;
the single-pole double-throw analog switch I2 and the single-pole double-throw analog switch II 3 are respectively NLAS52223 single-pole double-throw analog switches, and after the 1 pin of the NLAS52223 single-pole double-throw analog switch I2 is connected with the 1 pin and the 10 pin of the NLAS52223 single-pole double-throw analog switch II 3, the 1 pin and the 10 pin are simultaneously connected with one ends of a normally closed contact J1 and a normally open contact J2 of a relay 1, and the other ends of the normally closed contact J1 and the normally open contact J2 of the relay 1 are respectively connected with the 1 pin of a USB1 and the 1 pin of the USB 2;
one end of the relay 1 is connected with the 1 pin of the USB2, the other end of the relay is connected with the 4 pin of the USB2, the 4 pin of the USB2 is connected with the anode of the diode D2, and the cathode of the diode D2 is connected with the 1 pin of the USB 2; the 2-foot and 3-foot of the USB1 are respectively connected with the 2-foot of the NLAS52223 single-pole double-throw analog switch I2 and the 2-foot of the NLAS52223 single-pole double-throw analog switch II 3, the 3-foot of the NLAS52223 single-pole double-throw analog switch I2 and the 3-foot of the NLAS52223 single-pole double-throw analog switch II 3 are respectively connected with the 2-foot and the 3-foot of the Micro USB, the 4-foot and 8-foot of the NLAS52223 single-pole double-throw analog switch I2 and the 4-foot of the NLAS52223 single-pole double-throw analog switch II 3 are connected with the output end of the logic control circuit 4, the 5-foot of the NLAS52223 single-pole double-throw analog switch I2 and the 5-foot of the NLAS52223 single-pole double-throw analog switch II 3 are respectively connected with the 2-foot and 3-foot of the USB2, the 6-foot of the NLAS52223 single-pole double-throw analog switch I2 and the 6-foot of the NLAS52223 single-throw analog switch II 3 are simultaneously grounded, the 7-foot of the NLAS52223 single-pole double-throw analog switch I2 is connected with the 1-foot of the USB2, and the 1-foot of the NLAS52223 single-pole double-throw analog switch II 2 is connected with the USB1, and the 1-foot is connected with the USB 1;
the touch switch 5 is connected with a CP end of the JK trigger 6 through a resistor R1, the J end and the K end of the JK trigger 6 are simultaneously connected with a 9 pin of the NLAS52223 single-pole double-throw analog switch II 3 and a 4 pin of a 555 monostable trigger circuit, the Q' end of the JK trigger 6 is simultaneously connected with a2 pin and a 6 pin of the 555 monostable trigger circuit 7 through a resistor R2, the Q end of the JK trigger 6 is suspended, the 4 pin and the 8 pin of the 555 monostable trigger circuit 7 are connected with the 7 pin of the 555 monostable trigger circuit through a resistor R3, the 5 pin of the 555 monostable trigger circuit 7 is connected with the 4 pin of a Micro USB through a capacitor C, and the 3 pin of the 555 monostable trigger circuit 7 is connected with the output end of the logic control circuit 4.
Further, the logic control circuit 4 includes and gates A1, A2, an inverter N1, and a diode D1; the two input ends of the AND gate A1 are respectively connected with the 1 pin of the USB1 and the 1 pin of the USB2, the output end of the AND gate A1 is connected with the 8 pin of the NLAS52223 single-pole double-throw analog switch II 3, the 9 pin of the NLAS52223 single-pole double-throw analog switch II 3 is connected with one input end of the AND gate A2 through the NOT gate N1, the other input end of the AND gate A2 is connected with the 1 pin of the USB1, the output end of the AND gate A2 is connected with the anode of the diode D1, and the cathode of the diode D1 is used as the output end of the logic control circuit 4.
While the present novel embodiment has been described in detail with reference to the drawings, the present novel embodiment is not limited to the above embodiment, and various changes may be made without departing from the novel spirit of the present invention within the knowledge of those skilled in the art.

Claims (2)

1. A control method of a two-way USB control circuit is characterized in that: the intelligent control device comprises a USB1, a USB2, a relay (1), a single-pole double-throw analog switch I (2), a single-pole double-throw analog switch II (3), a logic control circuit (4), a touch switch (5), a JK trigger (6), a 555 monostable trigger circuit (7) and a Micro USB;
the single-pole double-throw analog switch I (2) and the single-pole double-throw analog switch II (3) are respectively NLAS52223 single-pole double-throw analog switches, and after the 1 pin of the NLAS52223 single-pole double-throw analog switch I (2) is connected with the 1 pin and the 10 pin of the NLAS52223 single-pole double-throw analog switch II (3), the 1 pin and the 10 pin are simultaneously connected with one ends of a normally closed contact J1 and a normally open contact J2 of a relay (1), and the other ends of the normally closed contact J1 and the normally open contact J2 of the relay (1) are respectively connected with the 1 pin of a USB1 and the 1 pin of the USB 2;
one end of the relay (1) is connected with the 1 pin of the USB2, the other end of the relay is connected with the 4 pin of the USB2, the 4 pin of the USB2 is connected with the anode of the diode D2, and the cathode of the diode D2 is connected with the 1 pin of the USB 2; the 2 pin and the 3 pin of the USB1 are respectively connected with the 2 pin of the NLAS52223 single-pole double-throw analog switch I (2) and the 2 pin of the NLAS52223 single-pole double-throw analog switch II (3), the 3 pin of the NLAS52223 single-pole double-throw analog switch I (2) and the 3 pin of the NLAS52223 single-pole double-throw analog switch II (3) are respectively connected with the 2 pin and the 3 pin of the Micro USB, the 4 pin and the 8 pin of the NLAS52223 single-pole double-throw analog switch I (2) and the 4 pin of the NLAS52223 single-pole double-throw analog switch II (3) are connected with the output end of the logic control circuit (4), the 5 pin of the NLAS52223 single-pole double-throw analog switch I (2) and the 5 pin of the NLAS52223 single-pole double-throw analog switch II (3) are respectively connected with the 2 pin and the 3 pin of the USB2, the 6 pin of the NLAS52223 single-pole double-throw analog switch I (2) and the 6 pin and the 7 pin of the NLAS52223 single-pole double-throw analog switch II (3) are simultaneously grounded, the 7 pin of the NLAS52223 single-pole double-throw analog switch I (2) is connected with the 1 pin of the USB2, the 9 pin of the NLAS52223 single-pole double-throw analog switch I (2) is connected with the 1 pin of the Micro USB, and the 10 pin of the NLAS52223 single-pole double-throw analog switch I (2) is connected with the 1 pin of the USB 1;
the touch switch (5) is connected with a CP end of a JK trigger (6) through a resistor R1, the J end and the K end of the JK trigger (6) are simultaneously connected with a 9 pin of a NLAS52223 single-pole double-throw analog switch II (3) and a 4 pin of a 555 monostable trigger circuit, a Q' end of the JK trigger (6) is simultaneously connected with a2 pin and a 6 pin of the 555 monostable trigger circuit (7) through a resistor R2, the Q end of the JK trigger (6) is suspended, the 4 pin and the 8 pin of the 555 monostable trigger circuit (7) are connected, and then the 4 pin and the 8 pin of the 555 monostable trigger circuit (7) are connected with the 4 pin of a Micro USB through a capacitor C, and the 3 pin of the 555 monostable trigger circuit (7) is connected with the output end of a logic control circuit (4);
when the equipment is connected with a PC through USB1 of two paths of USB control circuits, a normally closed contact of a relay is closed, a normally open contact is opened, power is supplied to NLAS52223 single-pole double-throw analog switches I and NLAS52223 single-pole double-throw analog switches II and a logic control circuit, the output of a logic AND gate A1 is low level, namely 8 pin of the NLAS52223 single-pole double-throw analog switch II is low level, 9 pin of the logic AND gate A1 is connected with 7 pin, power is not supplied to a 555 timer, furthermore, the output of the logic AND gate A2 is high level, namely 8 pin, 4 pin of the NLAS52223 single-pole double-throw analog switch I and 4 pin of the NLAS52223 single-pole double-throw analog switch II are high level, 3 pin of the NLAS52223 single-pole double-throw analog switch I is connected with 2 pin, 9 pin of the NLAS52223 single-pole double-throw analog switch II is connected with 2 pin, and finally, the two paths of USB control circuits communicate USB1 with the Micro USB, and connection of the PC and the equipment is realized;
when the equipment is connected with a power adapter through USB2 of two paths of USB control circuits, a normally closed contact of a relay is opened, a normally open contact is closed, power is supplied to NLAS52223 single-pole double-throw analog switch I, NLAS52223 single-pole double-throw analog switch II and a logic control circuit, the output of a logic AND gate A1 is low level, namely the 8 pin of the NLAS52223 single-pole double-throw analog switch II is low level, the 9 pin of the logic AND gate A1 is connected with the 7 pin, the power is not supplied to a 555 timer, furthermore, the output of the logic AND gate A2 is low level, namely the 8 pin, the 4 pin of the NLAS52223 single-pole double-throw analog switch I and the 4 pin of the NLAS52223 single-pole double-throw analog switch II are low level, the 3 pin of the NLAS52223 single-pole double-throw analog switch I is connected with the 5 pin, the 9 pin is connected with the 7 pin, and finally, the two paths of USB control circuits are communicated with the USB2 and the Micro USB, and the connection of the power adapter and the equipment is realized;
when the equipment is connected with a PC and a USB2 through USB1 of two paths of USB control circuits, the normally closed contact of the relay is opened, the normally open contact is closed, power is supplied to NLAS52223 single-pole double-throw analog switch I, NLAS52223 single-pole double-throw analog switch II and the logic control circuit, the output of the logic AND gate A1 is high, namely 8 pin of the NLAS52223 single-pole double-throw analog switch II is high, 9 pin is connected with 10 pin, power is supplied to a 555 timer, when the touch switch is not clicked, the output of the 555 monostable trigger circuit is low, the output of the logic AND gate A2 is low, namely 8 pin, 4 pin and 4 pin of the NLAS52223 single-pole double-throw analog switch I are low, 3 pin and 5 pin of the NLAS52223 single-pole double-throw analog switch I are connected, 9 pin and 7 pin are connected, and finally, the two paths of USB control circuits are used for connecting the USB2 with the USB adapter.
2. The control method of the two-way USB control circuit of claim 1, wherein: the logic control circuit (4) comprises AND gates A1 and A2, an NOT gate N1 and a diode D1; the two input ends of the AND gate A1 are respectively connected with the 1 pin of the USB1 and the 1 pin of the USB2, the output end of the AND gate A1 is connected with the 8 pin of the NLAS52223 single-pole double-throw analog switch II (3), the 9 pin of the NLAS52223 single-pole double-throw analog switch II (3) is connected with one input end of the AND gate A2 through the NOT gate N1, the other input end of the AND gate A2 is connected with the 1 pin of the USB1, the output end of the AND gate A2 is connected with the anode of the diode D1, and the cathode of the diode D1 is used as the output end of the logic control circuit (4).
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108197059B (en) * 2018-01-25 2024-05-28 昆明理工大学 Automatic switching device of dual-input USB
CN108665929B (en) * 2018-05-07 2020-12-04 北京慧清电子科技有限公司 Parameter storage and erasing device of communication electronic equipment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102098035A (en) * 2010-12-03 2011-06-15 惠州Tcl移动通信有限公司 Analog switch control circuit and mobile phone
CN201919042U (en) * 2010-12-03 2011-08-03 惠州Tcl移动通信有限公司 Analog switch control circuit and mobile phone
CN202259969U (en) * 2011-06-21 2012-05-30 周于麟 Automatic household electronic and electric appliance socket managed by sensor double-detection
CN205384601U (en) * 2016-02-01 2016-07-13 湖南铁道职业技术学院 Singlechip downloader
CN205484624U (en) * 2016-01-06 2016-08-17 东莞理工学院 Cell -phone USB data line weak point detection device that opens circuit
CN206698205U (en) * 2017-03-29 2017-12-01 昆明理工大学 A kind of two-way USB control circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102479064B (en) * 2010-11-23 2016-02-03 甘肃农业大学 display, mouse and keyboard switching device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102098035A (en) * 2010-12-03 2011-06-15 惠州Tcl移动通信有限公司 Analog switch control circuit and mobile phone
CN201919042U (en) * 2010-12-03 2011-08-03 惠州Tcl移动通信有限公司 Analog switch control circuit and mobile phone
CN202259969U (en) * 2011-06-21 2012-05-30 周于麟 Automatic household electronic and electric appliance socket managed by sensor double-detection
CN205484624U (en) * 2016-01-06 2016-08-17 东莞理工学院 Cell -phone USB data line weak point detection device that opens circuit
CN205384601U (en) * 2016-02-01 2016-07-13 湖南铁道职业技术学院 Singlechip downloader
CN206698205U (en) * 2017-03-29 2017-12-01 昆明理工大学 A kind of two-way USB control circuit

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