CN215576340U - Device for controlling vehicle-mounted electronic product to get electricity by recognizing vehicle bus protocol - Google Patents
Device for controlling vehicle-mounted electronic product to get electricity by recognizing vehicle bus protocol Download PDFInfo
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- CN215576340U CN215576340U CN202121832660.8U CN202121832660U CN215576340U CN 215576340 U CN215576340 U CN 215576340U CN 202121832660 U CN202121832660 U CN 202121832660U CN 215576340 U CN215576340 U CN 215576340U
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Abstract
The utility model discloses a device for controlling a vehicle-mounted electronic product to get electricity by identifying a vehicle bus protocol, which consists of an original vehicle input circuit, a detection board and an output circuit; the detection board comprises a detection analysis module, a power supply controller and an ACC controller; the voltage input end of the detection and analysis module is connected with the vehicle power input end of the input module, the signal input end of the detection and analysis module is connected with the vehicle signal input end of the input module, the power control output end of the detection and analysis module is respectively connected with the ACC controller and the power output end of the output module through the power controller, the ACC control output end of the detection and analysis module is connected with the ACC output end of the output module through the ACC controller, and the vehicle ground wire input end of the input module is connected with the ground wire output end of the output module. The utility model controls output power taking by identifying the vehicle bus protocol, does not need installation and detection of professionals, reduces hidden danger of damaging original vehicle accessories by dismounting, saves installation time and saves cost.
Description
Technical Field
The utility model relates to a vehicle-mounted electronic product electricity-taking technology, in particular to a device for controlling a vehicle-mounted electronic product to take electricity by identifying a vehicle bus protocol.
Background
The current vehicle-mounted electronic product has two types of electricity:
the method comprises the steps of firstly, getting electricity from an original vehicle fuse box, and controlling a switch of a vehicle-mounted electronic product by obtaining the ACC voltage state of a vehicle. This technique has the following problems: 1. the fuse boxes on the vehicle are different and difficult to search. 2. The corresponding insurance power taking position can be found by professional installation technicians and professional installation detection tools. 3. The installation and wiring are complicated, and professional technicians are required to disassemble and assemble the vehicle. There are certain dismouting degree of difficulty and risk. 4. The fuse box has no fixed wiring position, manual wiring or replacement of the fuse of the original vehicle is needed, and the hidden danger of poor contact or damage of the fuse of the original vehicle exists. 5. If the wrong line is accidentally connected during installation, the equipment cannot work normally, or the equipment cannot be shut down, so that the vehicle feeding is caused.
And secondly, electricity is taken from the vehicle-mounted cigarette lighter, and the mode occupies the cigarette lighter jack of the original vehicle and brings invariance to users. The cigarette lighter plug is exposed, which affects the beauty. Secondly, professional dismounting and mounting of the buried wire are needed. Bringing about a certain hidden danger of disassembly and assembly damage.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides the device for controlling the vehicle-mounted electronic product to get electricity by identifying the vehicle bus protocol, so that installation and detection of professionals are not needed, the hidden danger of damaging original vehicle accessories by dismounting is reduced, the installation time is saved, and the cost is saved.
The technical scheme of the utility model is as follows:
a device for controlling the electricity taking of a vehicle-mounted electronic product by identifying a vehicle bus protocol comprises an original vehicle input circuit, a detection board and an output circuit; the original vehicle input circuit comprises an input module, and the input module is provided with a vehicle power supply input end, a vehicle signal input end and a vehicle ground wire input end; the detection board comprises a detection and analysis module, a power supply controller and an ACC controller, wherein the detection and analysis module is provided with a voltage input end, a signal input end, a power supply control output end and an ACC control output end; the output circuit comprises an output module, and the output module is provided with a power output end, an ACC output end and a ground wire output end; the voltage input end of the detection and analysis module is connected with the vehicle power input end of the input module, the signal input end of the detection and analysis module is connected with the vehicle signal input end of the input module, the power control output end of the detection and analysis module is respectively connected with the ACC controller and the power output end of the output module through the power controller, the ACC control output end of the detection and analysis module is connected with the ACC output end of the output module through the ACC controller, and the vehicle ground wire input end of the input module is connected with the ground wire output end of the output module.
Furthermore, a first voltage division circuit is connected between the vehicle power supply input end of the input module and the detection and analysis module.
Further, the first voltage-dividing circuit comprises a linear voltage-stabilizing power supply chip, a voltage-dividing resistor R4 and a voltage-dividing resistor R5, the linear voltage-stabilizing power supply chip is provided with a voltage input end and a voltage output end, and the voltage input end of the linear voltage-stabilizing power supply chip is connected with the voltage-dividing resistor R4 and the voltage-dividing resistor R5 in series.
Further, RS 3005-33G is adopted by the linear voltage-stabilized power supply chip.
Further, the original vehicle input circuit further comprises a diode, and the diode is connected with a vehicle signal input end of the input module.
Further, a second voltage division circuit is connected between the vehicle signal input end of the input module and the detection and analysis module.
Furthermore, the second voltage dividing circuit is formed by connecting a voltage dividing resistor R7 and a voltage dividing resistor R8 in series.
Further, the detection analysis module adopts MCU-ADC-SOP 8.
Further, the power controller is formed by connecting a triode Q1 and a MOS tube M1 in series.
Furthermore, the ACC controller is formed by serially connecting a triode Q2 and an MOS tube M2.
Compared with the prior art, the utility model has the beneficial effects that: the utility model controls output power taking by identifying a vehicle bus protocol. The installation personnel do not need to find the insurance fussy, have saved man-hour. Special installation and detection tools such as a universal meter and a test pencil are not needed, and the professional requirements on installation technicians are reduced. The hidden line of burying does not influence former car pleasing to the eye. The risks of wrong line connection, poor contact, vehicle power feeding and the like do not exist.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a block circuit diagram of the present invention;
FIG. 2 is a schematic circuit diagram of the original vehicle input circuit according to the present invention;
FIG. 3 is a circuit diagram of a first voltage divider circuit according to the present invention;
FIG. 4 is a circuit diagram of a second voltage divider circuit according to the present invention;
FIG. 5 is a schematic circuit diagram of the detection and analysis module according to the present invention;
FIG. 6 is a schematic circuit diagram of a power supply controller according to the present invention;
FIG. 7 is a schematic circuit diagram of an ACC controller according to the present invention;
fig. 8 is a circuit diagram of the output circuit according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
Examples
Referring to fig. 1, an embodiment of the present invention provides a device for controlling a vehicle-mounted electronic product to obtain power by identifying a vehicle bus protocol, which is composed of an original vehicle input circuit, a first voltage dividing circuit, a second voltage dividing circuit, a detection board and an output circuit, wherein the detection board includes a detection and analysis module, a power controller and an ACC controller.
Specifically, as shown in fig. 2, the original vehicle input circuit includes an input module J8 and a diode D4, the input module J8 is provided with a vehicle power input terminal B +, a vehicle signal input terminal LIN, and a vehicle ground input terminal GND, and the diode D4 is connected to the vehicle signal input terminal LIN of the input module J8.
As shown in fig. 3, the first voltage dividing circuit includes a linear regulator power chip U2 RS3005_33G, a voltage dividing resistor R4 and a voltage dividing resistor R5, the linear regulator power chip U2 is provided with a voltage input terminal VIN and a voltage output terminal VOUT, and the voltage input terminal of the linear regulator power chip U2 is connected in series with a voltage dividing resistor R4 and a voltage dividing resistor R5.
As shown in fig. 4, the second voltage dividing circuit is formed by connecting a voltage dividing resistor R7 and a voltage dividing resistor R8 in series.
As shown in FIG. 5, the detection and analysis module U1 employs a MCU-ADC-SOP8, which has a voltage input terminal PA1/AN1, a signal input terminal PA2/AN2, a power control output terminal VDD and AN ACC control output terminal PA5/AN 3.
As shown in fig. 6, the power controller is formed by connecting a transistor Q1 and a MOS transistor M1 in series.
As shown in fig. 7, the ACC controller is composed of a transistor Q2 and a MOS transistor M2 connected in series.
As shown in fig. 8, the output circuit includes an output module J9 provided with a power supply output terminal B +, an ACC output terminal, and a ground output terminal GND.
The vehicle power input end B + of the input module J8 is connected with the voltage input end PA1/AN1 of the detection and analysis module U1 through a first voltage division circuit, the vehicle signal input end LIN of the input module J8 is connected with the signal input end PA2/AN2 of the detection and analysis module U1 through a second voltage division circuit, the power control output end VDD of the detection and analysis module U1 is respectively connected with the ACC controller and the power output end B + of the output module J9 through the power controller, the ACC control output end PA5/AN3 of the detection and analysis module U1 is connected with the ACC output end ACC of the output module J9 through the power controller, and the vehicle ground input end GND of the ACC input module J8 is connected with the ground output end GND of the output module J9.
The working principle is as follows:
the original vehicle power supply enters through a vehicle power supply input end B + of the input module J8, is divided by a voltage dividing resistor R4 and a voltage dividing resistor R5 and then is input to a voltage input end PA1/AN1 of the detection and analysis module U1, the detection and analysis module U1 detects the voltage value on the voltage input end PA1/AN1 through AN ADC (analog-to-digital converter), the size of the input voltage value is obtained through software calculation, the output power supply is controlled according to the size of the voltage value, the low-voltage protection function is realized, and the vehicle feeding is prevented. And the linear voltage-stabilizing power supply chip U2 continuously supplies power for 3.3V to the detection and analysis module U1 so as to ensure the stable operation of the detection and analysis module U1.
The original vehicle bus signal enters from a vehicle signal input end LIN of AN input module J8, is isolated through a diode D4 to prevent signal anti-series interference, is subjected to voltage division through a voltage division resistor R7 and a voltage division resistor R8 and then is input to a signal input end PA2/AN2 of a detection and analysis module U1, the detection and analysis module U1 analyzes the signal obtained from the signal input end PA2/AN2, and the timing is started to be high level when a rising edge is triggered by utilizing a software external interrupt triggering mode. When a falling edge triggers, the timing is started to be low level. And continuously acquiring the high and low level change to obtain whether the original bus has a signal to send. If the signal is detected, the ACC high state is output. If no signal is detected, the ACC output is turned off.
The power controller controls the output of the main power through a transistor Q1 and a MOS transistor M1.
The ACC controller controls the ACC output through a transistor Q2 and a MOS transistor M2.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a get device of electricity through discernment vehicle bus agreement control on-vehicle electronic product which characterized in that: the system consists of an original vehicle input circuit, a detection board and an output circuit;
the original vehicle input circuit comprises an input module, and the input module is provided with a vehicle power supply input end, a vehicle signal input end and a vehicle ground wire input end;
the detection board comprises a detection and analysis module, a power supply controller and an ACC controller, wherein the detection and analysis module is provided with a voltage input end, a signal input end, a power supply control output end and an ACC control output end;
the output circuit comprises an output module, and the output module is provided with a power output end, an ACC output end and a ground wire output end;
the voltage input end of the detection and analysis module is connected with the vehicle power input end of the input module, the signal input end of the detection and analysis module is connected with the vehicle signal input end of the input module, the power control output end of the detection and analysis module is respectively connected with the ACC controller and the power output end of the output module through the power controller, the ACC control output end of the detection and analysis module is connected with the ACC output end of the output module through the ACC controller, and the vehicle ground wire input end of the input module is connected with the ground wire output end of the output module.
2. The device for controlling the vehicle-mounted electronic product to take electricity through the vehicle bus identification protocol according to claim 1, is characterized in that: and a first voltage division circuit is connected between the vehicle power supply input end of the input module and the detection and analysis module.
3. The device for controlling the vehicle-mounted electronic product to take electricity through the vehicle bus identification protocol according to claim 2, is characterized in that: the first voltage-dividing circuit comprises a linear voltage-stabilizing power supply chip, a voltage-dividing resistor R4 and a voltage-dividing resistor R5, the linear voltage-stabilizing power supply chip is provided with a voltage input end and a voltage output end, and the voltage input end of the linear voltage-stabilizing power supply chip is connected with the voltage-dividing resistor R4 and the voltage-dividing resistor R5 in series.
4. The device for controlling the vehicle-mounted electronic product to take electricity through the vehicle bus identification protocol according to claim 3, wherein: the linear voltage-stabilized power supply chip adopts RS 3005-33G.
5. The device for controlling the vehicle-mounted electronic product to take electricity through the vehicle bus identification protocol according to claim 1, is characterized in that: the original vehicle input circuit further comprises a diode, and the diode is connected with a vehicle signal input end of the input module.
6. The device for controlling the vehicle-mounted electronic product to take electricity through the vehicle bus identification protocol according to claim 1, is characterized in that: and a second voltage division circuit is connected between the vehicle signal input end of the input module and the detection and analysis module.
7. The device for controlling the vehicle-mounted electronic product to take electricity through the vehicle bus identification protocol according to claim 6, wherein: the second voltage division circuit is formed by connecting a voltage division resistor R7 and a voltage division resistor R8 in series.
8. The device for controlling the vehicle-mounted electronic product to take electricity through the vehicle bus identification protocol according to claim 1, is characterized in that: the detection analysis module adopts MCU-ADC-SOP 8.
9. The device for controlling the vehicle-mounted electronic product to take electricity through the vehicle bus identification protocol according to claim 1, is characterized in that: the power controller is formed by connecting a triode Q1 and a MOS tube M1 in series.
10. The device for controlling the vehicle-mounted electronic product to take electricity through the vehicle bus identification protocol according to claim 1, is characterized in that: the ACC controller is formed by serially connecting a triode Q2 and an MOS tube M2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121832660.8U CN215576340U (en) | 2021-08-06 | 2021-08-06 | Device for controlling vehicle-mounted electronic product to get electricity by recognizing vehicle bus protocol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121832660.8U CN215576340U (en) | 2021-08-06 | 2021-08-06 | Device for controlling vehicle-mounted electronic product to get electricity by recognizing vehicle bus protocol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215576340U true CN215576340U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121832660.8U Expired - Fee Related CN215576340U (en) | 2021-08-06 | 2021-08-06 | Device for controlling vehicle-mounted electronic product to get electricity by recognizing vehicle bus protocol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215576340U (en) |
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2021
- 2021-08-06 CN CN202121832660.8U patent/CN215576340U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |