CN111824045A - Vehicle-mounted equipment's interface module and vehicle-mounted equipment - Google Patents
Vehicle-mounted equipment's interface module and vehicle-mounted equipment Download PDFInfo
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- CN111824045A CN111824045A CN202010674952.7A CN202010674952A CN111824045A CN 111824045 A CN111824045 A CN 111824045A CN 202010674952 A CN202010674952 A CN 202010674952A CN 111824045 A CN111824045 A CN 111824045A
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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)
- Dc-Dc Converters (AREA)
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Abstract
The embodiment of the invention relates to the technical field of vehicle-mounted equipment, and discloses an interface assembly of the vehicle-mounted equipment and the vehicle-mounted equipment, wherein the interface assembly comprises: the voltage detection device comprises an interface socket, a voltage detection module connected to the interface socket, and a booster connected to the interface socket and the voltage detection module; the voltage detection module is used for comparing the initial voltage with a threshold voltage and outputting a comparison result to the booster; the booster is used for outputting the initial voltage when the initial voltage is larger than the threshold voltage, and the booster is also used for boosting the initial voltage into a supply voltage when the initial voltage is smaller than the threshold voltage. In the embodiment of the invention, the interface component can adapt to various power supplies with different voltages to supply power to the vehicle-mounted equipment by combining the voltage detection module and the booster, 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 can be reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of vehicle-mounted equipment, in particular to an interface assembly of the vehicle-mounted equipment and the vehicle-mounted equipment.
Background
Vehicle-mounted afterloading devices are popular among consumers due to their convenience in installation and flexibility in configuration, and generally receive an external power supply voltage through an internal interface component of the vehicle-mounted afterloading device or transmit signals through the interface component.
In the prior art, one set of interface components can only be matched with a power supply with a fixed voltage, and one set of interface components can only realize one specific function, such as: the power supply or the signal transmission generally needs two sets of interface components to respectively realize the power supply and the signal transmission functions, thereby increasing the complexity and the manufacturing cost of the system. In addition, corresponding to the two sets of interface components, two jacks with different functions need to be arranged on the vehicle-mounted equipment, so that the appearance attractiveness of the equipment is influenced, 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 the manufacturing cost of a system.
In order to solve the above technical problem, an embodiment of the present invention provides an interface assembly of a vehicle-mounted 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 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 further used for boosting the initial voltage into a power supply voltage to be output to the power supply module when the initial voltage is smaller than the threshold voltage.
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: the voltage detection device comprises an interface socket, a voltage detection module and a booster; wherein the interface socket includes a power supply 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 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 boosting the initial voltage into a power supply voltage to be output to the power supply module when the initial voltage is smaller than the threshold voltage.
Compared with the prior art, the interface component can adapt to various power supplies with different voltages to supply power to the vehicle-mounted equipment through the combination of the voltage detection module and the booster, so that the number of socket holes in the vehicle-mounted equipment can be reduced, and the possibility of misoperation of a user is reduced.
In addition, the interface socket further comprises signal terminals, and the interface assembly further comprises a switch module; the signal input end of the switch module is connected to the signal terminal, and the signal output end of the switch module is connected to the processor of the vehicle-mounted equipment; the control end of the switch module is connected to the voltage detection module and 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 of the vehicle-mounted device and the processor to implement the signal transmission function of the interface component, so that when the initial voltage is less than the threshold voltage, the external device, such as: the computer can test or debug the vehicle-mounted equipment while supplying power to 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 fit the comparator.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic diagram of an in-vehicle apparatus according to a first embodiment of the invention;
fig. 2 is a schematic diagram of an in-vehicle apparatus according to a second embodiment of the invention;
fig. 3 is a schematic diagram of an interface assembly according to a third embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present application in various embodiments of the present invention. However, the technical solution claimed in the present application can be implemented without these technical details and 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, wherein the interface assembly can adapt to various power supplies with different voltages to supply power to the vehicle-mounted equipment through the combination of a voltage detection module and a booster, so that the number of socket holes in the vehicle-mounted equipment can be reduced, and the possibility of misoperation of a user is reduced. The following describes in detail the implementation details of the interface component of the present embodiment, and the following is provided only for the convenience of understanding and is not necessary for implementing the present embodiment.
Fig. 1 is a schematic diagram 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 provided 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 plurality 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; alternatively, the output voltage of a universal serial bus interface (USB) is typically 5V.
Specifically, interface assembly 180 includes interface socket 110, voltage detection module 120, and voltage 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 terminal 121 of the voltage detection module 120 is connected to the power supply 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 comprises a voltage input 131, a voltage output 132 and a control terminal 133, wherein the voltage input 131 is connected to the power supply terminal 111 for receiving an initial voltage; the voltage output end 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 for receiving 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 a supply voltage and outputs the supply voltage to the power module 150. In some embodiments, the supply voltage is 12V.
In some embodiments, the initial voltage is the output voltage of the USB interface, i.e.: 5V, and (5); or the output voltage of the OBD interface, i.e.: 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 afterloading apparatus such as: a vehicle event data recorder, a vehicle-mounted air purifier or a vehicle-mounted refrigerator and the like.
The interface assembly in the above embodiment combines the voltage detection module and the voltage booster, so that the vehicle-mounted device can be compatible with a plurality of power supplies with different voltages to supply power to the vehicle-mounted device through the same interface socket.
Fig. 2 is a schematic diagram 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 supply module 250, and a processor 260 provided therein. An 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 vehicle-mounted device 200 can also be connected with a computer via the interface component 280, so as to realize the test or debugging of the vehicle-mounted device by the computer, and meanwhile, the computer also serves as an external power supply to supply power to the vehicle-mounted device via the interface component 280.
The interface assembly 280 includes an interface socket 210, a voltage detection module 220, a voltage booster 230, and a switch module 240.
The interface socket 210 is used to match 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 supply 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 socket 210 also 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, a 3.5 mm specification Audio Jack, and the corresponding plug is an Audio plug; the audio jack is cylindrical hole shape, 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 can be a USB plug or an OBD plug, but is not limited to the USB plug and other types of plugs can be selected according to needs.
The voltage detection module 220 includes an input terminal 221 and a result output terminal 222, wherein the input terminal 221 is connected to the power terminal 211 of the interface socket for receiving the initial voltage, and the voltage detection module 220 compares the initial voltage with the threshold voltage and outputs from the result output terminal 222.
The booster 230 includes a voltage input 231, a voltage output 232, and a control terminal 233. A voltage input 231 connected to the power supply terminal 211 for receiving an initial voltage; the voltage output terminal 232 is connected to the power module 250 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 a boosting mode, boosts the initial voltage to a supply voltage, and outputs the supply voltage to the power module 250.
The switching module 240 includes a control terminal 241, a signal input terminal 243, and a signal output terminal 245. The control terminal 241 of the switch module 240 is connected to the result output terminal 222 of the voltage detection module for receiving the comparison result; the signal input terminal 243 is connected to the signal terminal 212 of the interface socket 210 for receiving a signal; the signal output terminal 245 is connected to the processor 260 of the in-vehicle device, and is used for outputting a signal to the processor 260. When the comparison result shows that the initial voltage is less than the threshold voltage, the switch module 240 is used to transmit a signal between the signal terminal 212 and the processor 260, which may be a test signal and/or a debug signal in some embodiments.
Specifically, the switch module 240 is used to turn 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 detection module 220, that is: signal paths between signal terminals 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 end 243 and the signal output end 245, so that the processor 260 can communicate with the outside, and the external computer can test or debug the vehicle-mounted device 200. At the same time, the booster 230 starts a boost mode, boosts the initial voltage to a supply voltage that meets the requirements, and outputs the supply voltage to the power module 250. In this case, the interface module simultaneously implements power supply and signal transmission functions.
When the comparison result shows that the initial voltage is greater than the threshold voltage, the switch 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 perform signal communication 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 component 280 is in a power only mode.
In the above embodiment, the voltage detection module, the booster and the switch module are combined, so that the interface component can simultaneously realize the power supply and signal transmission functions, 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. Like this, can reduce the socket quantity on the mobile unit, when promoting pleasing to the eye degree, also reduced manufacturing cost, improve interface module's reliability.
Fig. 3 is a schematic view of an interface assembly according to a third embodiment of the invention. Referring to fig. 3, interface assembly 380 includes interface socket 310, voltage detection module 320, voltage booster 330, and switch 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 used for receiving an initial voltage from the outside, and the signal terminals 312 and 313 are used for receiving signals 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 the initial voltage, and the voltage detection module 320 compares the initial voltage with the 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 325 and a comparator 326. The voltage divider 325 includes voltage dividing resistors R1 and R2, wherein R1 and R2 are 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 divider 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 supply terminal 311 to receive the initial voltage. The output OUT of the comparator 326 is the result output 322 of the voltage detection module 320. The comparator 326 is used for comparing the divided voltage with the reference voltage to obtain a comparison result. In some embodiments, divider resistor R1 is 560 kilo-ohms, 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 operating 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 terminal 331, a voltage output terminal 332, and a control terminal 333. The voltage input 331 is connected to the power supply terminal 311 for receiving an initial voltage; the voltage output terminal 332 is used for outputting an initial voltage or a supply voltage; the control terminal 333 is connected to the result output terminal 322 of the voltage detection module for receiving 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 a boosting mode, boosts the initial voltage to a 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 terminal 341 of the switch module 340 is connected to the result output terminal 322 of the voltage detection module for receiving the comparison result; the signal input terminals 343, 344 are connected to the signal terminals 312, 313 of the interface socket 310, respectively, for receiving signals; the signal outputs 345, 346 are for outputting signals to the processor of the in-vehicle device.
The switch 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, signal input terminals D-/L, D +/L, and signal output terminals D-, D +, L, R, wherein the signal input terminals D-/L, D +/L are the signal input terminals 343, 344 of the switch module 340, and the signal output terminals D-, D + are the signal output terminals 345, 346 of the switch module 340.
The gate of the first transistor NMOS is connected to the result output end 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 further connected to the power terminal 311 of the interface socket 310 via the resistor R3, the source of the second transistor PMOS is also connected to the power 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, as a result, the output end 322 outputs a low level, the NMOS and PMOS transistors are turned off, and the VBUS terminal receives the low level, the analog switch 348 turns off the paths between the signal input end D-/L, D +/L and the signal output ends D-, D +.
When the divided voltage is smaller than the reference voltage, as a result, the output end 322 outputs a high level, the first transistor NMOS and the second transistor PMOS are turned on, and the control end VBUS receives the high level, the analog switch 348 turns on a path between the signal input end D-/L, D +/L and the signal output end D-, D +.
In the above embodiment, the voltage divider circuit, the comparator, the booster, the transistor and the analog switch are combined, so that the interface component can simultaneously realize the power supply and signal transmission functions, 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 for 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 in practice.
Claims (10)
1. An interface assembly for a vehicle device, comprising: the voltage detection device comprises an interface socket, a voltage detection module and a 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 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 further used for boosting the initial voltage into a power supply voltage to be output to the power supply module when the initial voltage is smaller than the threshold voltage.
2. The interface assembly of claim 1 wherein the interface socket further comprises signal terminals, the interface assembly further comprising a switch module; the signal input end of the switch module is connected to the signal terminal, and the signal output end of the switch module is connected to the processor of the vehicle-mounted equipment; the control end of the switch module is connected to the voltage detection module and 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.
3. The interface assembly of claim 2, wherein the switch 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 switch 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.
4. The interface assembly of claim 2, wherein the signal comprises a test signal and/or a debug signal.
5. 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.
6. The interface assembly of claim 1 wherein the interface socket is an audio jack.
7. The interface assembly of claim 1, wherein the voltage detection module comprises a voltage divider circuit and a comparator, the voltage divider circuit is configured to divide the initial voltage to obtain a divided voltage, and the comparator is configured to compare the divided voltage with a reference voltage to obtain the comparison result.
8. An in-vehicle apparatus, characterized by comprising: the interface component and the power supply module are connected with the interface component; the interface assembly includes: the voltage detection device comprises an interface socket, a voltage detection module and a booster; wherein the content of the first and second substances,
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 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 boosting the initial voltage into a power supply voltage to be output to the power supply module when the initial voltage is smaller than the threshold voltage.
9. The in-vehicle device of claim 8, further comprising a processor connected to the interface assembly, the interface assembly further comprising a switch module, the interface socket further comprising signal terminals; the signal input end of the switch module is connected to the signal terminal, and the signal output end of the switch module is connected to the processor of the vehicle-mounted equipment; the control end of the switch module is connected to the voltage detection module and 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.
10. The interface assembly of claim 8 wherein the vehicle device is a tachograph.
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| CN104182315A (en) * | 2014-08-29 | 2014-12-03 | 青岛海信电器股份有限公司 | Circuit for controlling debugging function, electronic equipment and corresponding debugging equipment thereof |
| US20160085251A1 (en) * | 2014-09-24 | 2016-03-24 | Rohm Co., Ltd. | Power supply device |
| CN104615183A (en) * | 2014-12-30 | 2015-05-13 | 上海华虹宏力半导体制造有限公司 | Operating voltage control circuit and method and memorizer |
| CN105226945A (en) * | 2015-10-16 | 2016-01-06 | 深圳宝砾微电子有限公司 | Boost chip |
| CN105676934A (en) * | 2016-04-13 | 2016-06-15 | 深圳市赛音电子有限公司 | Power circuit |
| CN107783580A (en) * | 2016-08-26 | 2018-03-09 | 中兴通讯股份有限公司 | A kind of power supply power-supplying circuit and the method being powered using control circuit |
| CN106961214A (en) * | 2017-04-17 | 2017-07-18 | 京东方科技集团股份有限公司 | A kind of boost control circuit, its driving method and display device |
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| CN109217391A (en) * | 2017-06-30 | 2019-01-15 | 厦门雅迅网络股份有限公司 | A kind of car-mounted terminal supplying power for outside circuit that automobile storage battery is adaptive |
| CN108227808A (en) * | 2018-01-02 | 2018-06-29 | 京东方科技集团股份有限公司 | Digital low-dropout regulator and its control method |
| CN108700624A (en) * | 2018-03-23 | 2018-10-23 | 深圳市锐明技术股份有限公司 | A kind of automobile and its vehicle-mounted monitoring equipment, signals of vehicles detection circuit |
| CN110442218A (en) * | 2018-05-04 | 2019-11-12 | 爱思开海力士有限公司 | Electronic device and its device and method for supplying electric power |
| CN109120146A (en) * | 2018-08-28 | 2019-01-01 | 昆山龙腾光电有限公司 | Voltage adaptation circuit |
| CN110912254A (en) * | 2019-12-06 | 2020-03-24 | 华勤通讯技术有限公司 | Vehicle-mounted power supply control circuit and vehicle-mounted system |
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