CN111824045B - Interface component of vehicle-mounted equipment and vehicle-mounted equipment - Google Patents
Interface component of vehicle-mounted equipment and vehicle-mounted equipment Download PDFInfo
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- CN111824045B CN111824045B CN202010674952.7A CN202010674952A CN111824045B CN 111824045 B CN111824045 B CN 111824045B CN 202010674952 A CN202010674952 A CN 202010674952A CN 111824045 B CN111824045 B CN 111824045B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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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
- H01R13/02—Contact members
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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
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/26—Connectors or connections adapted for particular applications for vehicles
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- Mechanical Engineering (AREA)
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- Programmable Controllers (AREA)
Abstract
The embodiment of the invention relates to the technical field of vehicle-mounted equipment, and discloses an interface component of the vehicle-mounted equipment and the vehicle-mounted equipment, wherein the interface component comprises: the device comprises an interface socket, a voltage detection module connected with the interface socket and a booster connected with the interface socket and the voltage detection module; the voltage detection module is used for comparing the initial voltage with the threshold voltage and outputting a comparison result to the booster; the booster is configured to output the initial voltage if the initial voltage is greater than the threshold voltage, and to boost the initial voltage to a supply voltage if the initial voltage is less than the threshold voltage. In the embodiment of the invention, through the combination of the voltage detection module and the booster, the interface component can be adapted to a plurality of power supplies with different voltages to supply power for the vehicle-mounted equipment, so that the number of socket holes on the vehicle-mounted equipment can be reduced, and the complexity and the manufacturing cost of the system are reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of vehicle-mounted equipment, in particular to an interface component of the vehicle-mounted equipment and the vehicle-mounted equipment.
Background
The vehicle-mounted afterloading equipment is favored by wide consumers because of convenient installation and flexible configuration, and the vehicle-mounted equipment usually receives external power supply voltage through an internal interface component or transmits signals through the interface component.
In the prior art, a set of interface components can only be matched with a power supply with fixed voltage, and the set of interface components can only realize a specific function, such as: power or signal transmission, two sets of socket assemblies are generally required to respectively realize the functions of power supply and signal transmission, thereby increasing the complexity and manufacturing cost of the system. In addition, corresponding to the two sets of interface components, two jacks with different functions are required to be arranged on the vehicle-mounted equipment, so that the appearance aesthetic property of the equipment is affected, and the possibility of misoperation of a user is increased.
Disclosure of Invention
The invention aims to provide an interface assembly of vehicle-mounted equipment and the vehicle-mounted equipment, which can reduce the number of interface sockets and the complexity and manufacturing cost of a system.
In order to solve the above technical problem, an embodiment of the present invention provides an interface assembly of an in-vehicle device, including: interface socket, voltage detection module and booster. The interface socket includes a power terminal for receiving an initial voltage from the outside; the voltage detection module is connected to the power supply terminal, and is used for receiving the initial voltage, comparing the initial voltage with a threshold voltage and outputting a comparison result; the control end of the booster is connected to the voltage detection module and is used for receiving the comparison result, the voltage input end of the booster is connected to the power supply terminal, the voltage output end of the booster is connected to the power supply module of the vehicle-mounted device, the booster is used for outputting the initial voltage to the power supply module when the initial voltage is larger than the threshold voltage, and the booster is also used for raising the initial voltage to be the power supply voltage when the initial voltage is smaller than the threshold voltage and outputting the power supply voltage to the power supply module.
The embodiment of the invention also provides vehicle-mounted equipment, which comprises an interface component and a power module connected with the interface component; the interface assembly includes: interface socket, voltage detection module and booster; wherein the interface socket includes a power terminal for receiving an initial voltage from the outside; the voltage detection module is connected to the power supply terminal, and is used for receiving the initial voltage, comparing the initial voltage with a threshold voltage and outputting a comparison result; the control end of the booster is connected to the voltage detection module and is used for receiving the comparison result, the voltage input end of the booster is connected to the power supply terminal, the voltage output end of the booster is connected to the power supply module of the vehicle-mounted device, the booster is used for outputting the initial voltage to the power supply module when the initial voltage is larger than the threshold voltage, and the booster is also used for raising the initial voltage to be the power supply voltage when the initial voltage is smaller than the threshold voltage and outputting the power supply voltage to the power supply module.
Compared with the prior art, the interface component can adapt to multiple power supplies with different voltages to supply power for the vehicle-mounted equipment through the combination of the voltage detection module and the booster, so that the number of socket holes on the vehicle-mounted equipment can be reduced, and the possibility of misoperation of a user is reduced.
In addition, the interface socket further comprises a signal terminal, and the interface assembly further comprises a switch module; the signal input end of the switch module is connected with the signal terminal, and the signal output end of the switch module is connected with the processor of the vehicle-mounted equipment; the control end of the switch module is connected with the voltage detection module and is used for receiving the comparison result; the switch module is used for transmitting signals between the signal terminal and the processor when the comparison result shows that the initial voltage is smaller than the threshold voltage.
In the above embodiment, a switch module connected to the voltage detection module is added between the interface socket and the processor of the vehicle device, so as to implement a signal transmission function of the interface component, so that when the initial voltage is less than the threshold voltage, the external device, such as: and the computer is used for supplying power to the vehicle-mounted equipment and simultaneously testing or debugging the vehicle-mounted equipment.
In addition, the voltage detection module comprises a voltage division circuit and a comparator, wherein the voltage division circuit is used for dividing the initial voltage to obtain a divided voltage, and the comparator is used for comparing the divided voltage with a reference voltage to obtain the comparison result. In this embodiment, the initial voltage is scaled down by a voltage divider circuit to adapt to the comparator.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
Fig. 1 is a schematic view of an in-vehicle apparatus according to a first embodiment of the present invention;
fig. 2 is a schematic view of an in-vehicle apparatus according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of an interface assembly according to a third embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present invention, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
The embodiment of the invention relates to an interface assembly and vehicle-mounted equipment comprising the same, and the interface assembly can adapt to multiple power supplies with different voltages to supply power for the vehicle-mounted equipment through the combination of a voltage detection module and a booster, so that the number of socket holes on the vehicle-mounted equipment can be reduced, and the possibility of misoperation of a user is reduced. Implementation details of the interface component of this embodiment are specifically described below, and the following details are provided only for facilitating understanding, and are not necessary to implement this embodiment.
Fig. 1 is a schematic view of an in-vehicle apparatus according to a first embodiment of the present invention. Referring to fig. 1, the in-vehicle apparatus 100 includes an interface assembly 180 and a power module 150 disposed therein, and an external power source 900 may supply power to the power module 150 through the interface assembly 180, wherein the external power source may have a variety of different voltages. In some embodiments, the external power source may be an output voltage of an on-board automatic diagnostic system interface (OBD), typically 12V; or, the output voltage of a universal serial bus interface (USB), typically 5V.
Specifically, the interface assembly 180 includes an interface socket 110, a voltage detection module 120, and a booster 130.
The interface socket 110 includes a power terminal 111 for receiving an output voltage from the external power source 900 as an initial voltage of the interface component.
The input end 121 of the voltage detection module 120 is connected to the power terminal 111 to receive an initial voltage; the voltage detection module 120 compares the initial voltage with a threshold voltage and outputs the result of the comparison via the result output terminal 122.
The booster 130 includes a voltage input terminal 131, a voltage output terminal 132, and a control terminal 133, wherein the voltage input terminal 131 is connected to the power terminal 111 for receiving an initial voltage; the voltage output terminal 132 is connected to the power module 150 and is used for outputting an initial voltage or a supply voltage; the control terminal 133 is connected to the result output terminal 122 of the voltage detection module 120, and is configured to receive the comparison result. When the comparison result shows that the initial voltage is greater than the threshold voltage, the booster 130 directly outputs the initial voltage to the power module 150; when the comparison result shows that the initial voltage is less than the threshold voltage, the booster 130 boosts the initial voltage to the supply voltage and outputs the supply voltage to the power supply module 150. In some embodiments, the supply voltage is 12V.
In some embodiments, the initial voltage is an output voltage of the USB interface, namely: 5V; or the output voltage of the OBD interface, namely: 12V; therefore, the threshold voltage is set in the range of 5V to 12V.
In some embodiments, the in-vehicle apparatus 100 is an in-vehicle rear-mounted apparatus such as: a vehicle event data recorder, a vehicle-mounted air purifier or a vehicle-mounted refrigerator, etc.
The interface component in the embodiment combines the voltage detection module and the booster, so that the vehicle-mounted equipment can be compatible with various power supplies with different voltages through the same interface socket to supply power to the vehicle-mounted equipment.
Fig. 2 is a schematic view of an in-vehicle apparatus according to a second embodiment of the present invention. Referring to fig. 2, the in-vehicle apparatus 200 includes an interface assembly 280, a power module 250, and a processor 260 disposed therein. The external power source may power the power module 250 through the interface assembly 280, wherein the external power source may have a variety of different voltages, such as: 5V or 12V. The in-vehicle device 200 may also be connected to a computer via the interface assembly 280 to enable testing or debugging of the in-vehicle device by the computer, while the computer also serves as an external power source to power the in-vehicle device via the interface assembly 280.
The interface assembly 280 includes the interface socket 210, the voltage detection module 220, the booster 230, and the switching module 240.
The interface socket 210 is configured to mate with a plug at one end of a data line, and the interface socket 210 includes a power terminal 211 and a signal terminal 212. The power terminal 211 is used for receiving an initial voltage from the outside, and the signal terminal 212 is used for receiving a signal from the outside.
In some embodiments, the interface receptacle 210 further includes a ground terminal 214, the ground terminal 214 for grounding. In some embodiments, the interface Jack is an Audio Jack (Audio Jack), for example, an Audio Jack having a 3.5 mm size, and the corresponding plug is an Audio plug; the audio jack is cylindrical, and the diameter of the audio jack with the specification of 3.5 mm is 3.5 mm. The other end of the data line may be a USB plug or an OBD plug, but is not limited thereto, and other types of plugs may be selected as needed.
The voltage detection module 220 includes an input 221 and a result output 222, wherein the input 221 is connected to the power terminal 211 of the interface socket for receiving an initial voltage, and the voltage detection module 220 compares the initial voltage with a threshold voltage and outputs from the result output 222.
The booster 230 includes a voltage input 231, a voltage output 232, and a control 233. The voltage input terminal 231 is connected to the power terminal 211 and is used for receiving an initial voltage; the voltage output terminal 232 is connected to the power module 250 and is used for outputting an initial voltage or a supply voltage; the control terminal 233 is connected to the result output terminal 222 of the voltage detection module to receive the comparison result. When the comparison result shows that the initial voltage is greater than the threshold voltage, the booster 230 directly outputs the initial voltage to the power module 250; when the comparison result shows that the initial voltage is less than the threshold voltage, the booster 230 starts the boost mode, boosts the initial voltage to the supply voltage, and outputs the supply voltage to the power supply module 250.
The switch module 240 includes a control terminal 241, a signal input terminal 243, and a signal output terminal 245. The control end 241 of the switch module 240 is connected to the result output end 222 of the voltage detection module, and is configured to receive the comparison result; the signal input terminal 243 is connected to the signal terminal 212 of the interface socket 210, and is used for receiving a signal; the signal output terminal 245 is connected to the processor 260 of the in-vehicle apparatus, and is configured to output a signal to the processor 260. When the comparison shows that the initial voltage is less than the threshold voltage, the switch module 240 is configured to transmit a signal, which in some embodiments may be a test signal and/or a debug signal, between the signal terminal 212 and the processor 260.
Specifically, the switching module 240 is configured to switch on or off a signal path between the signal input terminal 243 and the signal output terminal 245 according to the comparison result from the voltage detecting module 220, that is: a signal path between signal terminal 212 and processor 260.
When the comparison result shows that the initial voltage is less than the threshold voltage, the switch module 240 opens a signal path between the signal input terminal 243 and the signal output terminal 245, so that the processor 260 can communicate signals with the outside, and the external computer can test or debug the in-vehicle apparatus 200. Meanwhile, the booster 230 starts a boost mode to boost the initial voltage to a supply voltage satisfying the requirement, and outputs the supply voltage to the power module 250. In this case, the interface assembly implements both the power and signal transfer functions.
When the comparison result shows that the initial voltage is greater than the threshold voltage, the switching module 240 turns off the signal path between the signal input terminal 243 and the signal output terminal 245, so that the processor 260 does not communicate with the outside. At this time, the booster 230 directly transmits the initial voltage to the power module to supply power thereto. In this case, the interface assembly 280 is in a power-only mode.
In the above embodiment, through the combination of the voltage detection module, the booster and the switch module, the interface assembly can realize the functions of power supply and signal transmission at the same time, and then the vehicle-mounted device can be compatible with the power supply function, the debugging function and the testing function through the same interface socket. Therefore, the number of sockets on the vehicle-mounted equipment can be reduced, the attractive appearance is improved, the production cost is reduced, and the reliability of the interface assembly is improved.
Fig. 3 is a schematic diagram of an interface assembly according to a third embodiment of the present invention. Referring to fig. 3, the interface assembly 380 includes an interface socket 310, a voltage detection module 320, a booster 330, and a switching module 340.
The interface socket 310 includes a power terminal 311, signal terminals 312, 313, and a ground terminal 314. The power supply terminal 311 is configured to receive an initial voltage from the outside, and the signal terminals 312 and 313 are configured to receive a signal from the outside.
The voltage detection module 320 includes an input terminal 321 and a result output terminal 322, wherein the input terminal 321 is connected to the power terminal 311 of the interface socket for receiving an initial voltage, and the voltage detection module 320 compares the initial voltage with a threshold voltage to obtain a comparison result and outputs the comparison result from the result output terminal 322.
As shown in fig. 3, the voltage detection module 320 includes a voltage divider circuit 325 and a comparator 326. The voltage dividing circuit 325 includes voltage dividing resistors R1, R2, and R1 and R2 connected in series between the input terminal 321 and the ground terminal, a node between R1 and R2 is connected to the comparator 326, and the voltage dividing circuit 325 is configured to divide the initial voltage to obtain a divided voltage and output the divided voltage to the comparator 326.
The comparator 326 includes an input terminal SENSE, an output terminal OUT, an operating voltage terminal VDD, and a ground terminal GND. The operating voltage terminal VDD is connected to the power terminal 311 to receive an initial voltage. The output terminal OUT of the comparator 326 is the result output terminal 322 of the voltage detection module 320. The comparator 326 is used for comparing the divided voltage with a reference voltage to obtain a comparison result. In some embodiments, the divider resistor R1 is 560 kilo-ohms, the divider resistor R2 is 20 kilo-ohms, and the reference voltage is 0.4V.
In some embodiments, the voltage detection module 320 further includes a capacitor C, one end of the capacitor C is connected to the working voltage terminal VDD, and the other end of the capacitor C is grounded, and the capacitor C plays a role of filtering.
The booster 330 includes a voltage input 331, a voltage output 332, and a control 333. The voltage input end 331 is connected to the power terminal 311 and is used for receiving an initial voltage; the voltage output terminal 332 is configured to output an initial voltage or a supply voltage; the control terminal 333 is connected to the result output terminal 322 of the voltage detection module to receive the comparison result. When the comparison result shows that the divided voltage is greater than the reference voltage, the booster 330 directly outputs the initial voltage; when the comparison result shows that the divided voltage is less than the reference voltage, the booster 330 starts the boost mode, boosts the initial voltage to the supply voltage, and outputs the supply voltage.
The switch module 340 includes a control terminal 341, signal input terminals 343, 344, and signal output terminals 345, 346. The control end 341 of the switch module 340 is connected to the result output end 322 of the voltage detection module, and is used for receiving the comparison result; signal inputs 343, 344 are connected to signal terminals 312, 313 of the interface socket 310, respectively, for receiving signals; the signal outputs 345, 346 are used to output signals to the processor of the in-vehicle device.
The switching module 340 includes a first transistor NMOS, a second transistor PMOS, a resistor R3, a resistor R4, a resistor R5, a diode D, and an analog switch 348.
The analog switch 348 includes a control terminal VBUS, a signal input terminal D-/L, D +/L, and a signal output terminal D-, D+, L, R, wherein the signal input terminal D-/L, D +/L is the signal input terminals 343, 344 of the switch module 340, and the signal output terminal D-, D+ is the signal output terminals 345, 346 of the switch module 340.
The gate of the first transistor NMOS is connected to the result output terminal 322 of the voltage detection module, the source of the first transistor NMOS is grounded, the resistor R5 is connected between the gate and the source of the first transistor NMOS, the drain of the first transistor NMOS is connected to the gate of the second transistor PMOS via the resistor R4, the gate of the second transistor PMOS is also connected to the power supply terminal 311 of the interface socket 310 via the resistor R3, the source of the second transistor PMOS is also connected to the power supply terminal 311 of the interface socket 310, the drain of the second transistor PMOS is connected to the anode of the diode D, and the cathode of the diode D is connected to the control terminal VBUS of the analog switch 348.
When the divided voltage is greater than the reference voltage, the output terminal 322 outputs a low level, the first transistor NMOS and the second transistor PMOS are turned off, the control terminal VBUS receives the low level, and the analog switch 348 turns off the paths between the signal input terminals D-/L, D +/L and the signal output terminals D-, D+.
When the divided voltage is smaller than the reference voltage, the output end 322 outputs a high level, the first transistor NMOS and the second transistor PMOS are turned on, the control end VBUS receives the high level, and the analog switch 348 opens the path between the signal input end D-/L, D +/L and the signal output end D-, D+.
In the above embodiment, through the combination of the voltage dividing circuit, the comparator, the booster, the transistor and the analog switch, the interface component can realize the power supply and signal transmission functions at the same time, and then the vehicle-mounted device can be compatible with the power supply function, the debugging function and the testing function through the same interface socket.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. An interface assembly for an in-vehicle apparatus, comprising: interface socket, voltage detection module and booster;
the interface socket includes a power terminal for receiving an initial voltage from the outside;
the voltage detection module is connected to the power supply terminal, and is used for receiving the initial voltage, comparing the initial voltage with a threshold voltage and outputting a comparison result;
the control end of the booster is connected to the voltage detection module and is used for receiving the comparison result, the voltage input end of the booster is connected to the power supply terminal, the voltage output end of the booster is connected to the power supply module of the vehicle-mounted equipment and is used for outputting the initial voltage to the power supply module when the initial voltage is larger than the threshold voltage, and the booster is also used for raising the initial voltage to be a power supply voltage when the initial voltage is smaller than the threshold voltage and outputting the power supply voltage to the power supply module;
the interface socket further comprises a signal terminal, and the interface assembly further comprises a switch module; the signal input end of the switch module is connected with the signal terminal, and the signal output end of the switch module is connected with the processor of the vehicle-mounted equipment; the control end of the switch module is connected with the voltage detection module and is used for receiving the comparison result; the switch module is used for transmitting signals between the signal terminal and the processor when the comparison result shows that the initial voltage is smaller than the threshold voltage; the interface component provides power supply and signal transmission functions for the vehicle-mounted equipment.
2. The interface assembly of claim 1, wherein the switching module is configured to open a path between the signal input and the signal output when the comparison result indicates that the initial voltage is less than the threshold voltage, and wherein the switching module is configured to close the path between the signal input and the signal output when the comparison result indicates that the initial voltage is greater than the threshold voltage.
3. Interface assembly according to claim 1, characterized in that the signals comprise test signals and/or debug signals.
4. The interface assembly of claim 1, wherein the initial voltage is an output voltage of a universal serial bus interface or an output voltage of an on-board automatic diagnostic system interface.
5. The interface assembly of claim 1, wherein the interface receptacle is an audio jack.
6. The interface assembly of claim 1, wherein the voltage detection module comprises a voltage divider circuit for dividing the initial voltage to obtain a divided voltage, and a comparator for comparing the divided voltage with a reference voltage to obtain the comparison result.
7. An in-vehicle apparatus, characterized by comprising: an interface assembly and a power module connected with the interface assembly; the interface assembly includes: interface socket, voltage detection module and booster; wherein,,
the interface socket includes a power terminal for receiving an initial voltage from the outside;
the voltage detection module is connected to the power supply terminal, and is used for receiving the initial voltage, comparing the initial voltage with a threshold voltage and outputting a comparison result;
the control end of the booster is connected to the voltage detection module and is used for receiving the comparison result, the voltage input end of the booster is connected to the power supply terminal, the voltage output end of the booster is connected to the power supply module of the vehicle-mounted equipment, the booster is used for outputting the initial voltage to the power supply module when the initial voltage is larger than the threshold voltage, and the booster is also used for raising the initial voltage to be a power supply voltage when the initial voltage is smaller than the threshold voltage so as to be output to the power supply module;
the vehicle-mounted equipment further comprises a processor connected with the interface assembly, the interface assembly further comprises a switch module, and the interface socket further comprises a signal terminal; the signal input end of the switch module is connected with the signal terminal, and the signal output end of the switch module is connected with the processor of the vehicle-mounted equipment; the control end of the switch module is connected with the voltage detection module and is used for receiving the comparison result; the switch module is used for transmitting signals between the signal terminal and the processor when the comparison result shows that the initial voltage is smaller than the threshold voltage;
the interface component provides power supply and signal transmission functions for the vehicle-mounted equipment.
8. The in-vehicle apparatus according to claim 7, characterized in that the in-vehicle apparatus is a vehicle event data recorder.
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| CN202010674952.7A CN111824045B (en) | 2020-07-14 | 2020-07-14 | Interface component of vehicle-mounted equipment and vehicle-mounted equipment |
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| CN202010674952.7A CN111824045B (en) | 2020-07-14 | 2020-07-14 | Interface component of vehicle-mounted equipment and vehicle-mounted equipment |
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