CN114090491A - Serial bus connector with USB signal enhancement function - Google Patents
Serial bus connector with USB signal enhancement function Download PDFInfo
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- CN114090491A CN114090491A CN202111151450.7A CN202111151450A CN114090491A CN 114090491 A CN114090491 A CN 114090491A CN 202111151450 A CN202111151450 A CN 202111151450A CN 114090491 A CN114090491 A CN 114090491A
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- 238000010586 diagram Methods 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 137
- 230000001105 regulatory effect Effects 0.000 claims description 53
- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000002457 bidirectional effect Effects 0.000 claims description 11
- 230000001629 suppression Effects 0.000 claims description 11
- 230000001052 transient effect Effects 0.000 claims description 11
- 230000005669 field effect Effects 0.000 claims description 10
- 230000008054 signal transmission Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims 2
- 238000001914 filtration Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 description 6
- 230000003321 amplification Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- FPWNLURCHDRMHC-UHFFFAOYSA-N 4-chlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1 FPWNLURCHDRMHC-UHFFFAOYSA-N 0.000 description 1
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- 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
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- 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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
- H02H11/003—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection using a field effect transistor as protecting element in one of the supply lines
Abstract
The invention discloses a serial bus connector with a USB signal enhancement function, which comprises a vehicle-mounted entertainment system output end, a wiring harness and a connector assembly, wherein the vehicle-mounted entertainment system output end is used for outputting eye diagram data and providing electric energy, one end of the wiring harness is connected with the vehicle-mounted entertainment system output end, the other end of the wiring harness is connected with the connector assembly, the connector assembly is composed of a front shell, a signal output port, a PCB, a power signal input port and a rear shell, the front shell and the rear shell are fixedly connected to form a hollow cavity, the PCB is arranged in the cavity, the signal output port and the power signal input port are respectively and electrically connected with the PCB, and the signal output port and the power signal input port are far away from one end of the PCB and respectively penetrate through the front shell and the rear shell and extend to the outer sides of the front shell and the rear shell. The invention has simple structure, can adjust the signal enhancement amplitude according to the length of the wiring harness and by combining with the eye pattern requirement, has the adjustable range of 10-15 percent and meets the use requirement of a user.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted serial buses, in particular to a serial bus connector with a USB signal enhancement function.
Background
The Universal Serial Bus (USB) technology is designed for making up the deficiency of the traditional microcomputer external bus, with the expansion of application, the transmission rate of USB is continuously improved, the USB2.0 transmission speed is 480Mb/s at high speed, the common USB communication cable is less than 1.5 meters, when the length of the USB communication cable is more than 1.5 meters, the communication is not smooth and can not pass the USB2.0 authentication due to the influence of line impedance, the clarity, amplitude and noise interference of eye pattern transmission are poor, the reaction of inserting a data line is slow in the use process, the file downloading speed is slow or the connection is not good, and the like.
Disclosure of Invention
The invention aims to provide a serial bus connector with a USB signal enhancement function, which has the advantages of simple structure, capability of adjusting the signal enhancement amplitude according to the length of a wire harness and combining with eye pattern requirements, the adjustable range is 10-15%, the use requirements of users are met, and the problems that after the length of a USB communication cable is more than 1.5 m, the communication is not smooth due to the influence of line impedance, the USB2.0 authentication cannot be passed, and the eye pattern transmission is poor in definition, amplitude and noise interference are solved.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a serial bus connector with USB signal enhancement function, includes on-vehicle entertainment system output, pencil and connector subassembly, on-vehicle entertainment system output is used for exporting eye pattern data and provides the electric energy, on-vehicle entertainment system output is connected to the one end of pencil, and the connector subassembly is connected to the other end, the connector subassembly comprises preceding shell, signal output port, PCB board, power signal input port and backshell, and wherein preceding shell forms an inside hollow cavity with backshell fixed connection, and the PCB board sets up in this cavity, and signal output port and power signal input port are connected with PCB board electric property respectively, and signal output port and power signal input port keep away from PCB board one end and run through preceding shell and backshell respectively to extend to the outside of preceding shell and backshell.
Preferably, the length of the wire harness is 5 meters, the wire harness comprises an outer coating layer, two eye pattern transmission core wires and an electrical signal transmission core wire, the two eye pattern transmission core wires and the electrical signal transmission core wire are wrapped in the outer coating layer, and the two eye pattern transmission core wires and the electrical signal transmission core wire are mutually twisted to form a twist shape.
Preferably, the signal output port is a TYPE-C port or a Lightning port or a Micro USB port.
Preferably, the PCB is provided with an eye pattern amplifying circuit for amplifying an eye pattern output by the output end of the vehicle-mounted entertainment system, the eye pattern amplifying circuit is composed of a microcontroller, a power-supply-reverse-connection-preventing protection circuit, a differential equivalent distribution circuit, an EMI filter circuit, a DC-DC voltage regulating circuit and a data signal protection output circuit, wherein one end of the differential equivalent distribution circuit and one end of the EMI filter circuit are connected with the power-supply-reverse-connection-preventing protection circuit, the other end of the differential equivalent distribution circuit and the other end of the EMI filter circuit are connected with the DC-DC voltage regulating circuit, and the microcontroller is respectively connected with the DC-DC voltage regulating circuit and the data signal protection output circuit.
Preferably, the power supply reverse connection prevention protection circuit comprises a field effect transistor Q1, a zener diode ZD3, a bidirectional transient suppression diode D1, a resistor R5, a resistor R13, a capacitor C9 and a capacitor C15, wherein the field effect transistor Q1 is an 8-pin field effect transistor, pins 5, 6, 7 and 8 of the field effect transistor Q1 are respectively connected with a power supply signal input port and a ground wire, the capacitor C15 is connected with the bidirectional transient suppression diode D1 in parallel, one ends of the capacitor C15 and the bidirectional transient suppression diode D1 are grounded, the other ends of the capacitor C15 and the bidirectional transient suppression diode D1 are respectively connected with a pin 6 of the power supply signal input port, the resistor R13 and the zener diode 3 are connected in parallel and then connected with the resistor R5 in series, one end of the capacitor C9 is connected with pins 1, 2 and 3 of the field effect transistor Q1, and the other end of the capacitor C9 is connected with a filter circuit.
Preferably, the differential equivalent distribution circuit is composed of an inductor FB2, an inductor FB3 and a capacitor C19, wherein the input ends of the inductor FB2 and the inductor FB3 are respectively connected with pins 3 and 4 of the power supply signal input port, the output ends of the inductor FB2 and the inductor FB3 are respectively connected with the DC-DC voltage regulating circuit, and two ends of the capacitor C19 are respectively connected with the output ends of the inductor FB2 and the inductor FB 3.
Preferably, the EMI filter circuit includes a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C16, an inductor L2 and an inductor L3, where the capacitor C10, the capacitor C11, the capacitor C12 and the capacitor C16 are connected in parallel, one end of each of the capacitor C10, the capacitor C11, the capacitor C12 and the capacitor C16 is grounded, the other end of each of the capacitors is connected to the inductor L2 and the DC-DC voltage regulator circuit, the capacitor C13 and the capacitor C14 are connected in parallel, one end of each of the capacitors C13 and C14 is grounded, the other end of each capacitor is connected to the inductor L2 and the inductor L3, and the end of the inductor L3, which is far away from the inductor L2, is connected to the power reverse connection protection circuit.
Preferably, the DC-DC voltage regulating circuit comprises a voltage regulating chip U, a resistor R, a capacitor C and an inductor L, wherein the resistor R, the capacitor C and the inductor L form a voltage regulating chip peripheral circuit, the peripheral circuit of the voltage regulating chip is connected with the voltage regulating chip U4, and pins 8 and 9 of the voltage regulating chip U4 are respectively connected with pins 35 and 34 of the microcontroller.
Preferably, the data signal protection output circuit includes a capacitor C3, a capacitor C5, a capacitor C22, a capacitor C23, a resistor R19, a resistor R22, a zener diode ZD1, a zener diode ZD2, a zener diode ZD4 and a zener diode ZD5, wherein one end of the resistor R19 and the resistor R22 is connected to the DC-DC voltage regulator circuit, the other end is connected to pins No. 4 and No. 10 of the signal output port, one end of the capacitor C23 and the zener diode ZD5 are grounded, the other end is connected to the resistor R19, one end of the capacitor C22 and the zener diode ZD4 are grounded, the other end is connected to the resistor R22, one end of the zener diode 1 and the zener diode ZD2 are connected to pins No. 8 and No. 5 of the signal output port, the other end is grounded, one end of the capacitor C5 is grounded, and the other end is connected to pins No. 2 of the capacitor C3 and the signal output port.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a serial bus connector with a USB signal enhancement function, which has a simple integral structure, and can adjust the signal enhancement amplitude by arranging an eye pattern amplification circuit on a PCB (printed circuit board) of the serial bus connector, wherein the eye pattern amplification circuit can adjust the amplitude of signal enhancement within the range of 10-15%, so that the length of a wiring harness can be more than 1.5 m, the use requirement of a user is met, and the technical problems of large wiring resistance of the wiring harness due to overlong wires, unsmooth communication, incapability of passing USB2.0 authentication, poor definition, amplitude and noise interference of eye pattern transmission, slow response of inserting data wires in the use process, slow file downloading speed or unsmooth connection and the like are effectively solved.
2. The eye pattern amplifying circuit of the invention is composed of a microcontroller, a power-proof reverse connection protection circuit, a differential equivalent distribution circuit, an EMI filter circuit, a DC-DC voltage regulating circuit and a data signal protection output circuit, wherein eye pattern signals at the output end of a vehicle-mounted entertainment system are transmitted to a power signal input port of a connector component through a wire harness, are switched by an internal switch of a voltage regulating chip in the DC-DC voltage regulating circuit after being subjected to differential equivalent distribution by the differential equivalent distribution circuit on the eye pattern amplifying circuit, are subjected to differential equivalent output to the microcontroller through pins 8 and 9 of the voltage regulating chip, the microcontroller receives weak eye pattern signals and shapes and amplifies the eye pattern definition and amplitude of the eye pattern signals, the eye pattern signal intensity amplitude is enhanced by combining with eye pattern requirements through the length of the wire harness, and then the enhanced eye pattern signals are output to the data signal protection output circuit through pins 2 and 3 of the microcontroller, and finally, the signal is output to the external equipment through the signal output port.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a sectional view of a wire harness of the present invention;
FIG. 3 is an exploded view of the connector assembly of the present invention;
FIG. 4 is a schematic block diagram of the present invention;
FIG. 5 is a diagram of an eye diagram amplifying circuit according to the present invention;
FIG. 6 shows a second eye diagram amplifying circuit according to the present invention;
FIG. 7 is a circuit diagram of a microcontroller according to the present invention;
fig. 8 is a schematic circuit diagram of the differential equivalent distribution circuit of the present invention.
The reference numerals and names in the figures are as follows:
10. an in-vehicle entertainment system output; 20. a wire harness; 201. a tegument layer; 202. an eye transmission core; 203. an electrical signal transmission core wire; 30. a connector assembly; 1. a front housing; 2. a signal output port; 3. a PCB board; 31. a microcontroller; 32. a power reverse connection prevention protection circuit; 33. a differential equivalent distribution circuit; 34. an EMI filter circuit; 35. a DC-DC voltage regulating circuit; 36. a data signal protection output circuit; 4. a power signal input port; 5. a rear shell.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, an embodiment of the present invention includes: a serial bus connector with USB signal enhancement function comprises a vehicle-mounted entertainment system output end 10, a wire harness 20 and a connector assembly 30, wherein the vehicle-mounted entertainment system output end 10 is used for outputting eye diagram data and providing electric energy, one end of the wire harness 20 is connected with the vehicle-mounted entertainment system output end 10, the other end of the wire harness is connected with the connector assembly 30, the length of the wire harness 20 is 5 meters in the embodiment, the wire harness comprises an outer layer 201, two eye diagram transmission core wires 202 and an electric signal transmission core wire 203, the two eye diagram transmission core wires 202 and the electric signal transmission core wire 203 are mutually twisted into a twist shape, the twisting of the two eye diagram transmission core wires 202 into the twist shape can enable interference signals to mutually offset, the practicability is strong, the connector assembly 30 is composed of a front shell 1, a signal output port 2, a PCB board 3, a power signal input port 4 and a rear shell 5, wherein preceding shell 1 and backshell 5 fixed connection form an inside hollow cavity, and PCB board 3 sets up in this cavity, signal output port 2 and power signal input port 4 respectively with PCB board 3 electric connection, and signal output port 2 and power signal input port 4 keep away from 3 one end of PCB board and run through preceding shell 1 and backshell 5 respectively to extend to the outside of preceding shell 1 and backshell 5.
Specifically, the signal output port 2 is a TYPE-C port or a Lightning port or a Micro USB port, and the TYPE-C port is preferably selected as the signal output port 2 in the embodiment.
Referring to fig. 4, the PCB 3 is provided with an eye pattern amplifying circuit for amplifying an eye pattern output from the output terminal 10 of the in-vehicle entertainment system, the eye pattern amplifying circuit is composed of a microcontroller 31, a power-supply-preventing reverse connection protection circuit 32, a differential equivalent distribution circuit 33, an EMI filter circuit 34, a DC-DC voltage regulating circuit 35 and a data signal protection output circuit 36, wherein one end of the differential equivalent distribution circuit 33 and one end of the EMI filter circuit 34 are connected to the power-supply-preventing reverse connection protection circuit 32, the other end thereof is connected to the DC-DC voltage regulating circuit 35, and the microcontroller 31 is connected to the DC-DC voltage regulating circuit 35 and the data signal protection output circuit 36, respectively.
Referring to fig. 5, CN1 is the aforementioned power signal input port 4, the power signal input port 4 is electrically connected to the power reverse connection prevention protection circuit 32, the power reverse connection prevention protection circuit 32 includes a fet Q1, a zener diode ZD3, a bidirectional transient suppression diode D1, a resistor R5, a resistor R13, a capacitor C9, and a capacitor C15, wherein the fet Q1 is an 8-pin fet, and the fets Q1 have pins 5, 6, 7, and 8 connected to the power signal input port 4 and the ground, respectively, the capacitor C15 and the bidirectional transient suppression diode D1 are connected in parallel, one end of the capacitor C15 and the bidirectional transient suppression diode D1 are grounded, the other end of the capacitor C15 is connected to the pin 6 of the power signal input port 4, the resistor R13 and the zener diode ZD3 are connected in parallel and then connected in series with the resistor R5, one end of the capacitor C9 is connected to the pins 1, 2, and ZD 363 of the fet Q1, and the other end is connected to an EMI filter circuit 34.
Referring to fig. 5 again, the EMI filter circuit 34 in the figure includes a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C16, an inductor L2, and an inductor L3, wherein a capacitor C10, a capacitor C11, a capacitor C12, and a capacitor C16 are connected in parallel, one end of the capacitor C10, the capacitor C11, the capacitor C12, and the capacitor C16 is grounded, the other end of the capacitor C2 is connected to the DC-DC voltage regulator circuit 35, the capacitor C13 is connected to the capacitor C14 in parallel, one end of the capacitor C13 and the capacitor C14 is grounded, the other end of the capacitor C12 is connected to the inductor L2 and the inductor L3, and the end of the inductor L3, which is far away from the inductor L2, is connected to the reverse connection protection circuit 32.
Referring to fig. 6, the DC-DC voltage regulating circuit 35 in the figure includes a voltage regulating chip U, a resistor R, a capacitor C, and an inductor L, wherein the model of the voltage regulating chip U is MPS4228, the resistor R, the capacitor C, the capacitor R, the resistor R, the capacitor C, and the capacitor C, The capacitor C50, the capacitor C51 and the inductor L1 form a peripheral circuit of the voltage regulating chip, the peripheral circuit of the voltage regulating chip is connected with the voltage regulating chip U4, and pins 8 and 9 of the voltage regulating chip U4 are respectively connected with pins 35 and 34 of the microcontroller 31.
Specifically, in the peripheral circuit of the voltage regulating chip, one end of a resistor R6 and one end of a resistor R10 are respectively connected with the EMI filter circuit 34, the other end of the resistor R6 is connected with the pin No. 13 of the voltage regulating chip U4, one end of a resistor R12 and one end of a resistor R16 are connected with the VCC power supply terminal, the other end of the resistor R18 is respectively connected with the pin No. 2 and the pin No. 10 of the voltage regulating chip U4, one end of the resistor R18 is grounded, the other end of the resistor R86is respectively connected with the pin No. 10 of the resistor R16 and the pin No. 10 of the voltage regulating chip U4, one end of the capacitor C18 is grounded, the other end of the resistor R18 is connected with the pin No. 16 of the voltage regulating chip U18, the other end of the capacitor C18 is connected with the capacitor C18, one end of the capacitor C18 far away from the resistor R18 is respectively connected with the resistor R18, the inductor L18 and the pin No. 15 of the voltage regulating chip U18, one end of the capacitor R18 is connected with the capacitor C18, and the capacitor C18 are connected in parallel with the capacitor C18, and the capacitor C18, the other end is connected with No. 4 pins of an inductor L1, a resistor R3, a resistor R4 and a voltage regulating chip U4, a resistor R8 and a capacitor C8 are connected in parallel, one ends of a resistor R8 and a capacitor C8 are connected with a resistor R4, the other ends of the resistor R9 and the resistor R11 are connected with a resistor R7, one end of a capacitor C7 is grounded, the other end of the capacitor C7 is connected with No. 17 pin of the voltage regulating chip U4, one ends of a resistor R14 and a resistor R15 are connected with a data signal protection output circuit 36, the other ends of the resistor R14 and the resistor R15 are respectively connected with No. 8 and No. 9 pins of the voltage regulating chip U4, one end of a resistor R17 is connected with No. 22 pin of the voltage regulating chip U4, the other end of the resistor R20 and one end of the capacitor C21 are grounded, and the other ends of the capacitor C20 and the capacitor C21 are respectively connected with No. 1 and No. 20 pins of the voltage regulating chip U4.
Referring to fig. 6 again, the CON1 in the figure is a signal output port 2, the signal output port 2 is electrically connected to the data signal protection output circuit 36, the data signal protection output circuit 36 includes a capacitor C3, a capacitor C5, a capacitor C22, a capacitor C23, a resistor R19, a resistor R22, a zener diode ZD1, a zener diode ZD2, a zener diode ZD4, and a zener diode ZD5, wherein one end of the resistor R19 and the resistor R22 is connected to the DC-DC voltage regulator circuit 35, the other end is connected to pins No. 4 and No. 10 of the signal output port 2, one end of the capacitor C23 and the zener diode ZD5 are grounded, the other end is connected to the resistor R19, one end of the capacitor C22 and the zener diode ZD4 are grounded, the other end is connected to the resistor R22, one end of the zener diode 1 and one end of the zener diode ZD2 are connected to pins No. 8 and No. 5 of the signal output port 2, the other end is grounded, and one end of the capacitor C5 is grounded, the other end is respectively connected with the capacitor C3 and the No. 2 pin of the signal output port 2.
Referring to fig. 7, fig. 7 is a circuit diagram of the microcontroller according to the present invention, in which U3 is the microcontroller 31, whose type is USB4712, pins 34 and 35 of U3 are connected to pins 9 and 8 of the voltage regulating chip U4 in fig. 6, and pins 2 and 3 of U3 are connected to the data signal protection output circuit 36.
Referring to fig. 8, the differential equivalent distribution circuit 33 in the figure is composed of an inductor FB2, an inductor FB3, and a capacitor C19, wherein input terminals of the inductor FB2 and the inductor FB3 are respectively connected to pins 3 and 4 of the power signal input port 4, output terminals of the inductor FB2 and the inductor FB3 are respectively connected to the DC-DC voltage regulating circuit 35, and two ends of the capacitor C19 are respectively connected to output terminals of the inductor FB2 and the inductor FB 3.
In summary, the eye pattern signal at the output terminal 10 of the in-vehicle entertainment system is transmitted to the power signal input port 4 of the connector assembly 30 through the wiring harness 20, is differentially and equivalently distributed through the differential equivalent distribution circuit 33 on the eye pattern amplifying circuit, and then is switched by the internal switch of the voltage regulating chip U4 in the DC-DC voltage regulating circuit 35, and is differentially and equivalently output to the microcontroller 31 through the pins 8 and 9 of the voltage regulating chip U4, and the microcontroller 31 receives the weak eye pattern signal, shapes and amplifies the eye pattern definition and the amplitude of the eye pattern signal, and enhances the intensity amplitude of the eye pattern signal by combining the length of the wiring harness 20 and the requirement of the eye pattern, and then the enhanced eye pattern signal is output to the data signal protection output circuit 36 through the pins 2 and 3 of the microcontroller 31, and finally is output to the external device through the signal output port 2.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. A serial bus connector with USB signal enhancement, comprising: the portable entertainment system comprises a vehicle-mounted entertainment system output end (10), a wire harness (20) and a connector assembly (30), wherein the vehicle-mounted entertainment system output end (10) is used for outputting eye diagram data and providing electric energy, one end of the wire harness (20) is connected with the vehicle-mounted entertainment system output end (10), the other end of the wire harness is connected with the connector assembly (30), the connector assembly (30) is composed of a front shell (1), a signal output port (2), a PCB (3), a power signal input port (4) and a rear shell (5), wherein the front shell (1) and the rear shell (5) are fixedly connected to form a hollow cavity, the PCB (3) is arranged in the cavity, the signal output port (2) and the power signal input port (4) are respectively and electrically connected with the PCB (3), one ends, far away from the PCB (3), of the signal output port (2) and the power signal input port (4) respectively penetrate through the front shell (1) and the rear shell (5), and extends to the outside of the front case (1) and the rear case (5).
2. A serial bus connector with USB signal enhancement according to claim 1, wherein: the length of the wire harness (20) is 5 meters, the wire harness comprises an outer covering layer (201), two eye pattern transmission core wires (202) and an electric signal transmission core wire (203), the two eye pattern transmission core wires (202) and the electric signal transmission core wire (203) are wrapped in the outer covering layer (201), and the two eye pattern transmission core wires (202) and the electric signal transmission core wire (203) are mutually twisted to form a twist shape.
3. A serial bus connector with USB signal enhancement according to claim 1, wherein: the signal output port (2) is a TYPE-C port or a Lightning port or a Micro USB port.
4. A serial bus connector with USB signal enhancement according to claim 1, wherein: the circuit comprises a PCB (3) and is characterized in that an eye pattern amplifying circuit for amplifying an eye pattern output by an output end (10) of a vehicle-mounted entertainment system is arranged on the PCB, the eye pattern amplifying circuit is composed of a microcontroller (31), a power-supply-preventing reverse connection protection circuit (32), a differential equivalent distribution circuit (33), an EMI filter circuit (34), a DC-DC voltage regulating circuit (35) and a data signal protection output circuit (36), wherein one end of the differential equivalent distribution circuit (33) and one end of the EMI filter circuit (34) are connected with the power-supply-preventing reverse connection protection circuit (32), the other end of the differential equivalent distribution circuit and the other end of the EMI filter circuit are connected with the DC-DC voltage regulating circuit (35), and the microcontroller (31) is respectively connected with the DC-DC voltage regulating circuit (35) and the data signal protection output circuit (36).
5. The serial bus connector with USB signal enhancement function of claim 4, wherein: the power supply reverse connection prevention protection circuit (32) comprises a field effect transistor Q1, a voltage stabilizing diode ZD3, a bidirectional transient suppression diode D1, a resistor R5, a resistor R13, a capacitor C9 and a capacitor C15, wherein the field effect transistor Q1 is an 8-pin field effect transistor, pins 5, 6, 7 and 8 of the field effect transistor Q1 are respectively connected with a power supply signal input port (4) and a ground wire, the capacitor C15 is connected with the bidirectional transient suppression diode D1 in parallel, one ends of the capacitor C15 and the bidirectional transient suppression diode D1 are grounded, the other ends of the capacitor C15 and the bidirectional transient suppression diode D1 are respectively connected with a pin 6 of the power supply signal input port (4), the resistor R13 and the voltage stabilizing diode ZD3 are connected with the resistor R5 in series after being connected in parallel, one end of the capacitor C9 is connected with pins 1, 2 and 3 of the field effect transistor Q1, and the other end of the capacitor C9 is connected with an EMI filtering circuit (34).
6. The serial bus connector with USB signal enhancement function of claim 4, wherein: the differential equivalent distribution circuit (33) is composed of an inductor FB2, an inductor FB3 and a capacitor C19, wherein input ends of the inductor FB2 and the inductor FB3 are respectively connected with pins 3 and 4 of a power supply signal input port (4), output ends of the inductor FB2 and the inductor FB3 are respectively connected with the DC-DC voltage regulating circuit (35), and two ends of the capacitor C19 are respectively connected with output ends of the inductor FB2 and the inductor FB 3.
7. The serial bus connector with USB signal enhancement function of claim 4, wherein: the EMI filter circuit (34) comprises a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C16, an inductor L2 and an inductor L3, wherein the capacitor C10, the capacitor C11, the capacitor C12 and the capacitor C16 are connected in parallel, one end of the capacitor C10, one end of the capacitor C11, one end of the capacitor C12 and one end of the capacitor C16 are grounded, the other end of the capacitor C2 is connected with the inductor L2 and the DC-DC voltage regulating circuit (35), the capacitor C13 and the capacitor C14 are connected in parallel, one end of the capacitor C13 and one end of the capacitor C14 are grounded, the other end of the capacitor C7335 is connected with the inductor L2 and the inductor L3 respectively, and one end, far away from the inductor L2, of the inductor L3 is connected with the reverse connection protection circuit (32) for preventing power supply.
8. The serial bus connector with USB signal enhancement function of claim 4, wherein: the DC-DC voltage regulating circuit (35) comprises a voltage regulating chip U, a resistor R, a capacitor C and an inductor L, wherein the resistor R, the capacitor C and the inductor L form a voltage regulating chip peripheral circuit, the peripheral circuit of the voltage regulating chip is connected with a voltage regulating chip U4, and pins 8 and 9 of the voltage regulating chip U4 are respectively connected with pins 35 and 34 of a microcontroller (31).
9. The serial bus connector with USB signal enhancement function of claim 4, wherein: the data signal protection output circuit (36) comprises a capacitor C3, a capacitor C5, a capacitor C22, a capacitor C23, a resistor R19, a resistor R22, a zener diode ZD1, a zener diode ZD2, a zener diode ZD4 and a zener diode ZD5, wherein one ends of the resistor R19 and the resistor R22 are connected with the DC-DC voltage regulating circuit (35), the other ends of the resistor R19 and the resistor R22 are respectively connected with pins No. 4 and No. 10 of the signal output port (2), one ends of the capacitor C23 and the zener diode ZD5 are grounded, the other ends of the capacitor C22 and the zener diode ZD4 are grounded, the other ends of the capacitor C1 and the zener diode ZD2 are respectively connected with pins No. 8 and No. 5 of the signal output port (2), the other ends of the capacitor C5 are grounded, and the other ends of the capacitor C3 and the pin No. 2 of the signal output port (2) are respectively connected with ZD.
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| CN202111151450.7A CN114090491A (en) | 2021-09-29 | 2021-09-29 | Serial bus connector with USB signal enhancement function |
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| CN202111151450.7A CN114090491A (en) | 2021-09-29 | 2021-09-29 | Serial bus connector with USB signal enhancement function |
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