CN220896784U - Data communication device for upgrading vehicle-mounted camera software - Google Patents
Data communication device for upgrading vehicle-mounted camera software Download PDFInfo
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- CN220896784U CN220896784U CN202322612468.3U CN202322612468U CN220896784U CN 220896784 U CN220896784 U CN 220896784U CN 202322612468 U CN202322612468 U CN 202322612468U CN 220896784 U CN220896784 U CN 220896784U
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Abstract
The embodiment of the utility model provides a data communication device for upgrading vehicle-mounted camera software, which comprises: a USB port; a first connection port; the IIC communication chip is used for carrying out data communication with the vehicle-mounted camera based on an IIC communication protocol; a third connection port; the RS232 communication chip is used for carrying out data communication with the vehicle-mounted camera based on an RS232 communication protocol; the USB expansion chip is respectively connected with the USB port, the IIC communication chip and the RS232 communication chip, and is used for respectively judging whether the IIC communication chip and the RS232 communication chip are connected with the corresponding vehicle-mounted camera or not when the USB port is connected with external software burning equipment, and communicating the USB port with the communication chip connected with the corresponding vehicle-mounted camera. According to the embodiment, the USB expansion chip is additionally arranged, and the USB port, the IIC communication chip and the RS232 communication chip are connected through the USB expansion chip, so that data communication with two vehicle-mounted cameras is realized through one USB port based on different communication protocols, the use is more flexible, and repeated plugging and unplugging of the USB port are not needed.
Description
Technical Field
The embodiment of the utility model relates to the technical field of vehicle-mounted camera software upgrading equipment, in particular to a data communication device for vehicle-mounted camera software upgrading.
Background
At present, in order to upgrade software of an LVDS vehicle-mounted camera, an external software burning device (for example, a computer) storing upgrade data and configuration parameters waiting for burning data is connected with the vehicle-mounted camera through a data communication device to realize data interaction, so that the data waiting for burning is written into Flash and ISP registers of the vehicle-mounted camera through the data communication device.
The existing data communication device mainly comprises two types: IIC interface board based on IIC communication protocol and RS232 interface board based on RS232 communication protocol, when in actual application, corresponding interface board is selected according to communication protocol adopted by vehicle-mounted camera, and then the selected interface board is butt-jointed with external software burning equipment through USB port. However, the inventor finds that, in implementation, due to different communication protocols of the vehicle-mounted camera, when the later upgrade maintenance is performed, the user needs to manually select different interface boards frequently and perform the plugging replacement operation, so that the upgrade efficiency is low and the USB port is easy to damage.
Disclosure of utility model
The technical problem to be solved by the embodiment of the utility model is to provide the data communication device for upgrading the vehicle-mounted camera software, which can flexibly select a communication mode to realize the upgrade of the vehicle-mounted camera without repeatedly plugging and unplugging a connection port which is plugged with external software burning equipment.
In order to solve the technical problems, the embodiment of the utility model provides the following technical scheme: a data communication device for in-vehicle camera software upgrades, comprising:
the USB port is used for being connected with external software burning equipment;
The first connection port is used for being connected with a second connection port on the first vehicle-mounted camera based on the IIC communication protocol; the IIC communication chip is used for carrying out data communication with the first vehicle-mounted camera based on an IIC communication protocol through the first connection port;
The third connection port is used for being connected with a fourth connection port on the second vehicle-mounted camera based on the RS232 communication protocol;
The RS232 communication chip is used for carrying out data communication with the vehicle-mounted camera based on an RS232 communication protocol; and the USB expansion chip is respectively connected with the USB port, the IIC communication chip and the RS232 communication chip, and is used for respectively judging whether the IIC communication chip and the RS232 communication chip are connected with corresponding vehicle-mounted cameras when the USB port is connected with external software burning equipment, and communicating the USB port with the communication chip connected with the corresponding vehicle-mounted cameras.
Further, the USB port is a Type-C port.
Further, the data communication device further includes:
The voltage conversion module comprises a first voltage conversion unit which is connected with a power terminal of the USB port and used for converting the initial voltage output by the power terminal into a first preset voltage, and a second voltage conversion unit which is connected with the power terminal of the USB port and used for converting the initial voltage output by the power terminal into a second preset voltage; and
The power supply port modules are arranged in one-to-one correspondence with the IIC communication chips and the RS232 communication chips, and each power supply port module comprises a first voltage terminal, a second voltage terminal and a connector, wherein the first voltage terminal is connected with the first voltage conversion unit and used for providing a first preset voltage, the second voltage terminal is connected with the second voltage conversion unit and used for providing a second preset voltage, and the connector is used for selectively connecting a power IO port of the IIC communication chip or a power IO port of the RS232 communication chip to the first voltage terminal or the second voltage terminal.
Further, the IIC communication chip comprises a first data sending pin and a first data receiving pin; the first connection port comprises a first data transmission terminal and a first data receiving terminal, the first data transmission pin is connected to the first data transmission terminal through a first resistor R1, the first data receiving pin is connected to the first data receiving terminal through a second resistor R2, and the second connection port comprises a second data receiving terminal and a second data transmission terminal which are respectively connected with the first data transmission terminal and the first data receiving terminal in one-to-one correspondence; the first data transmitting terminal and the first data receiving terminal are also connected to a ground terminal through a first TVS pipe and a second TVS pipe, respectively.
Further, the IIC communication chip further includes a first ground pin, the first connection port further includes a first ground terminal that is butted with the first ground pin, and the second connection port further includes a second ground terminal that is butted with the first ground terminal.
Further, the RS232 communication chip comprises a second data sending pin and a second data receiving pin; the third connection port comprises a third data transmission terminal and a third data receiving terminal, the second data transmission pin is connected to the second data transmission terminal through a third resistor R3, the second data receiving pin is connected to the third data receiving terminal through a fourth resistor R4, and the fourth connection port comprises a fourth data receiving terminal and a fourth data transmission terminal which are respectively connected with the third data transmission terminal and the third data receiving terminal in a one-to-one correspondence manner; the third data transmitting terminal and the third data receiving terminal are also connected to a ground terminal through a third TVS pipe and a fourth TVS pipe, respectively.
Further, the RS232 communication chip further includes a second ground pin, the third connection port further includes a third ground terminal that is butted with the first ground pin, and the fourth connection port further includes a fourth ground terminal that is butted with the third ground terminal.
Further, the USB port, the first connection port, the IIC communication chip, the third connection port, the RS232 communication chip, the USB expansion chip, the voltage conversion module and the power supply port module are integrated on the same PCB circuit board.
Further, the power supply port module is a pin header assembled on the PCB, and the pin header includes a first pin header and a second pin header respectively serving as the first voltage terminal and the second voltage terminal, and a third pin header connected to a power supply IO port of the IIC communication chip or a power supply IO port of the RS232 communication chip; the connector is a jump cap or a jump wire assembled on the pin header.
Further, the first pin header, the second pin header and the third pin header are respectively three pins sequentially adjacent to each other on the pin header, and the first pin header and the second pin header are respectively located at two opposite sides of the third pin header.
After the technical scheme is adopted, the embodiment of the utility model has at least the following beneficial effects: according to the embodiment of the utility model, the traditional IIC communication chip and the RS232 communication chip are integrated and arranged in the data communication device, the USB expansion chip is additionally arranged to connect the USB port, the IIC communication chip and the RS232 communication chip, and the third connection port is additionally arranged to connect the RS232 communication chip and the vehicle-mounted camera, so that the vehicle-mounted camera is only connected with external software burning equipment through the same USB port, and after the vehicle-mounted camera is connected to the data communication device, the USB expansion chip automatically judges whether the IIC communication chip and the RS232 communication chip are connected with the corresponding vehicle-mounted camera or not, and the USB port is communicated with the communication chip connected with the vehicle-mounted camera, so that two different communication modes are provided for software upgrading of the vehicle-mounted camera; and moreover, the USB port can be utilized to simultaneously realize data communication with one or two vehicle-mounted cameras based on different communication protocols, so that the USB port can be used more flexibly without repeated plugging and unplugging.
Drawings
FIG. 1 is a schematic block diagram of an alternative embodiment of a data communication device for in-vehicle camera software upgrades of the present utility model.
Fig. 2 is a schematic diagram of a data communication device for upgrading vehicle-mounted camera software according to another alternative embodiment of the present utility model.
Fig. 3 is a schematic diagram of connection of pin header sockets of an IIC communication chip according to an alternative embodiment of the data communication device for upgrading vehicle-mounted camera software.
Fig. 4 is a schematic diagram of an alternative embodiment of a data communication device for upgrading vehicle-mounted camera software, after a jump cap is mounted on a pin header socket connected to an IIC communication chip.
Detailed Description
The utility model will be described in further detail with reference to the drawings and the specific examples. It should be understood that the following exemplary embodiments and descriptions are only for the purpose of illustrating the utility model and are not to be construed as limiting the utility model, and that the embodiments and features of the embodiments of the utility model may be combined with one another without conflict.
As shown in fig. 1, an alternative embodiment of the present utility model provides a data communication device 1 for upgrading vehicle-mounted camera software, including:
a USB port 10, configured to connect with an external software burning device 3;
A first connection port 11 for connecting with a second connection port 50 on the first vehicle camera 5 based on the IIC communication protocol; the IIC communication chip 12 is configured to perform data communication with the first vehicle-mounted camera 5 via the first connection port 11 based on an IIC communication protocol;
A third connection port 13, configured to connect with a fourth connection port 60 on the second in-vehicle camera 6 based on the RS232 communication protocol;
the RS232 communication chip 14 is configured to perform data communication with the second in-vehicle camera 6 via the third connection port 13 based on an RS232 communication protocol; and
The USB extension chip 15 is respectively connected to the USB port 10, the IIC communication chip 12 and the RS232 communication chip 14, and is configured to respectively determine whether the IIC communication chip 12 and the RS232 communication chip 14 are connected to corresponding vehicle-mounted cameras when the USB port 10 is connected to the external software burning device 3, and communicate the USB port 10 with a communication chip connected to the corresponding vehicle-mounted camera 5.
According to the embodiment of the utility model, the traditional IIC communication chip 12 and the RS232 communication chip 14 are integrated and arranged in the data communication device, the USB expansion chip is additionally arranged to connect the USB port, the IIC communication chip and the RS232 communication chip 14, and the third connection port 13 is additionally arranged to connect the RS232 communication chip 14 and the vehicle-mounted camera, so that the same USB port 10 is only needed to be connected with the external software burning device 3, after the vehicle-mounted camera is connected to the data communication device, the USB expansion chip 15 automatically judges whether the IIC communication chip 12 and the RS232 communication chip 14 are connected with the corresponding vehicle-mounted camera, and the USB port 10 is communicated with the communication chip connected with the vehicle-mounted camera, so that two different communication modes are provided for software upgrading of the vehicle-mounted camera; moreover, the USB port 10 can be utilized to simultaneously realize data communication with one or two vehicle-mounted cameras based on different communication protocols, so that the USB port 10 is more flexible to use and does not need to be repeatedly plugged and unplugged.
Generally, to realize connection of the USB extension chip 15 with the IIC communication chip 12 and the RS232 communication chip 14, the DM and DP pins of each communication channel of the USB extension chip 15 are correspondingly connected with the DM and DP pins of one communication chip; in particular, the above-mentioned onboard camera and the communication chip refer to the presence of the first onboard camera 5, the second onboard camera 6, the IIC communication chip 12 and the RS232 communication chip 14 connected to each other.
In an alternative embodiment of the present utility model, the USB port 10 is a Type-C port. In this embodiment, the USB port 10 adopts a Type-C port in the USB interface standard, and the Type-C port has a wide application range and higher versatility, and is convenient to use without distinguishing between the front and back sides during the plugging.
In an alternative embodiment of the present utility model, as shown in fig. 2, the data communication apparatus 1 further includes:
The voltage conversion module 16 includes a first voltage conversion unit 161 connected to the power terminal 101 of the USB port 10 for converting an initial voltage output from the power terminal 101 into a first predetermined voltage, and a second voltage conversion unit 163 connected to the power terminal 101 of the USB port 10 for converting the initial voltage output from the power terminal 101 into a second predetermined voltage; and
Two power supply port modules 17 are disposed in one-to-one correspondence with the IIC communication chip 12 and the RS232 communication chip 14, and each power supply port module 17 includes a first voltage terminal 171 connected to the first voltage conversion unit 161 for providing the first predetermined voltage, a second voltage terminal 173 connected to the second voltage conversion unit 163 for providing the second predetermined voltage, and a connector 175 for selectively connecting the power supply IO port 121 of the IIC communication chip 12 or the power supply IO port 141 of the RS232 communication chip 14 to the first voltage terminal 171 or the second voltage terminal 173.
Since the conventional communication interface board requires an external power supply and the power IO port of the communication chip of the interface board needs to flexibly select the input voltage according to the use requirement, in this embodiment, the voltage conversion module 16 is added, the first voltage conversion unit 161 and the second voltage conversion unit 163 are used to convert the initial voltage (for example, 5V) output by the power terminal 101 into the first predetermined voltage (for example, 3.3V) and the second predetermined voltage (for example, 1.8V) respectively, and then, the power supply port module 17 is disposed corresponding to the IIC communication chip 12 and the RS232 communication chip 14 and selectively connected to the first voltage terminal 171 or the second voltage terminal 173 by the connector 175 thereof, so that the user can flexibly set the input voltage for the power IO port 121 of the IIC communication chip 12 and the power IO port 141 of the RS232 communication chip 14 according to the use requirement.
In a specific implementation, the first voltage conversion unit 161 and the second voltage conversion unit 163 are implemented by LDO linear regulators.
In an alternative embodiment of the present utility model, as shown in fig. 2, the IIC communication chip 12 includes a first data transmitting pin 123 and a first data receiving pin 125; the first connection port 11 includes a first data transmission terminal 110 and a first data reception terminal 112, the first data transmission pin 123 is connected to the first data transmission terminal 110 through a first resistor R1, the first data reception pin 125 is connected to the first data reception terminal 112 through a second resistor R2, and the second connection port 50 includes a second data reception terminal 501 and a second data transmission terminal 503 for one-to-one connection with the first data transmission terminal 110 and the first data reception terminal 112, respectively; the first data transmission terminal 110 and the first data reception terminal 112 are also connected to a ground terminal through a first TVS pipe 110a and a second TVS pipe 112a, respectively. In this embodiment, in the software upgrading and debugging process of the vehicle-mounted camera, hot plug is generally required, and the hot plug generates spike voltage and transient current, so as to effectively protect the IIC communication chip 12, and by adding the first resistor R1 and the second resistor R2 and correspondingly setting the first TVS tube 110a and the second TVS tube 112a, a bleed channel can be provided for the transient current generated by the hot plug, so as to prevent the chip from being damaged by the spike voltage.
In an alternative embodiment of the present utility model, as shown in fig. 2, the IIC communication chip 12 further includes a first ground pin 127, the first connection port 11 further includes a first ground terminal 114 that is butted against the first ground pin 127, and the second connection port 50 further includes a second ground terminal 505 that is butted against the first ground terminal 114. In this embodiment, the IIC communication chip 12 is further connected to the two grounding terminals 505 of the second connection port 50 through the first grounding pin 127, so as to effectively provide grounding for the vehicle-mounted camera.
In an alternative embodiment of the present utility model, as shown in fig. 2, the RS232 communication chip 14 includes a second data transmitting pin 143 and a second data receiving pin 145; the third connection port 13 includes a third data transmission terminal 131 and a third data reception terminal 133, the second data transmission pin 143 is connected to the third data transmission terminal 131 through a third resistor R3, the second data reception pin 145 is connected to the third data reception terminal 133 through a fourth resistor R4, and the fourth connection port 60 includes a fourth data reception terminal 601 and a fourth data transmission terminal 603 for one-to-one connection with the third data transmission terminal 131 and the third data reception terminal 133, respectively; the third data transmitting terminal 131 and the third data receiving terminal 133 are also connected to the ground terminal through a third TVS tube 131a and a fourth TVS tube 133a, respectively. In this embodiment, in the software upgrading and debugging process of the vehicle-mounted camera 5, hot plug is generally required, and the hot plug generates spike voltage and transient current, so as to effectively protect the RS232 communication chip 14, and by adding the third resistor R3 and the fourth resistor R4 and correspondingly setting the third TVS tube 131a and the fourth TVS tube 133a, a bleed channel can be provided for the transient current generated by the hot plug, so as to prevent the chip from being damaged by the spike voltage.
In a specific implementation, the first TVS tube 110a, the second TVS tube 112a, the third TVS tube 131a, and the fourth TVS tube 133a all use bidirectional transient voltage suppression diodes without distinguishing between positive and negative electrodes; in addition, the first data transmitting pin 123 and the first data receiving pin 125 of the IIC communication chip 12 are typically SDA and SCL pins, respectively; the second data transmit pin 143 and the second data receive pin 145 of the RS232 communication chip 14 are typically TXD and RXD pins, respectively.
In an alternative embodiment of the present utility model, as shown in fig. 2, the RS232 communication chip 14 further includes a second ground pin 147, the third connection port 13 further includes a third ground terminal 135 that is butted against the second ground pin 147, and the fourth connection port 60 further includes a fourth ground terminal 605 that is butted against the third ground terminal 135. In this embodiment, the RS232 communication chip 14 is further connected to the fourth ground terminal 605 through the second ground pin 147, so as to effectively provide the ground for the vehicle camera 5.
In an alternative embodiment of the present utility model, the USB port 10, the first connection port 11, the IIC communication chip 12, the third connection port 13, the RS232 communication chip 14, the USB extension chip 15, the voltage conversion module 16, and the power supply port module 17 are all integrated on the same PCB circuit board. In this embodiment, the above component modules are all assembled on the same PCB circuit board, which can effectively reduce the occupied volume of the lifting data communication device 1, and is convenient for carrying and use.
In an alternative embodiment of the present utility model, as shown in fig. 3 and 4, the power supply port module 17 is a pin header assembled on the PCB, and the pin header 17 includes a first pin header and a second pin header as the first voltage terminal 171 and the second voltage terminal 173, respectively, and a third pin header 177 connected to the power IO port 121 of the IIC communication chip 12 or the power IO port 141 of the RS232 communication chip 14; the connector 175 is a jumper cap or jumper assembled on the pin header 17. In this embodiment, the power supply port module 17 directly adopts the pin header 17, and uses the jump cap or the jump wire to short-circuit the corresponding two pins, so that the connection of the circuit can be simply and conveniently realized, the cost is lower, and the use is also convenient.
In an alternative embodiment of the present utility model, as shown in fig. 3 and 4, the first pin header 171, the second pin header 173 and the third pin header 177 are respectively three pins sequentially adjacent to each other on the pin header 17, and the first pin header 171 and the second pin header 173 are respectively located on opposite sides of the third pin header 177. In this embodiment, the first pin header 171, the second pin header 173 and the third pin header 177 are respectively three pins sequentially adjacent to each other on the pin header 17, and when the jump cap is used as the connector 175, the installation of the jump cap is facilitated.
The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are all within the scope of the present utility model.
Claims (10)
1. A data communication device for in-vehicle camera software upgrades, comprising:
the USB port is used for being connected with external software burning equipment;
The first connection port is used for being connected with a second connection port on the first vehicle-mounted camera based on the IIC communication protocol; and
The IIC communication chip is used for carrying out data communication with the first vehicle-mounted camera based on an IIC communication protocol through the first connection port;
the data communication device is characterized in that the data communication device further comprises:
The third connection port is used for being connected with a fourth connection port on the second vehicle-mounted camera based on the RS232 communication protocol;
the RS232 communication chip is used for carrying out data communication with the second vehicle-mounted camera based on an RS232 communication protocol through the second connection port; and
The USB expansion chip is respectively connected with the USB port, the IIC communication chip and the RS232 communication chip, and is used for respectively judging whether the IIC communication chip and the RS232 communication chip are connected with corresponding vehicle-mounted cameras when the USB port is connected with external software burning equipment, and communicating the USB port with the communication chip connected with the corresponding vehicle-mounted cameras.
2. The data communication device for vehicle camera software upgrade of claim 1, wherein the USB port is a Type-C port.
3. The data communication device for in-vehicle camera software upgrade according to claim 1 or 2, wherein the data communication device further comprises:
The voltage conversion module comprises a first voltage conversion unit which is connected with a power terminal of the USB port and used for converting the initial voltage output by the power terminal into a first preset voltage, and a second voltage conversion unit which is connected with the power terminal of the USB port and used for converting the initial voltage output by the power terminal into a second preset voltage; and
The power supply port modules are arranged in one-to-one correspondence with the IIC communication chip and the RS232 communication chip, and each power supply port module comprises a first voltage terminal, a second voltage terminal and a connector, wherein the first voltage terminal is connected with the first voltage conversion unit and used for providing a first preset voltage, the second voltage terminal is connected with the second voltage conversion unit and used for providing a second preset voltage, and the connector is used for selectively connecting a power IO port of the IIC communication chip or a power IO port of the RS232 communication chip to the first voltage terminal or the second voltage terminal.
4. The data communication device for vehicle camera software upgrade of claim 1, wherein the IIC communication chip comprises a first data transmission pin and a first data reception pin; the first connection port comprises a first data transmission terminal and a first data receiving terminal, the first data transmission pin is connected to the first data transmission terminal through a first resistor R1, the first data receiving pin is connected to the first data receiving terminal through a second resistor R2, and the second connection port comprises a second data receiving terminal and a second data transmission terminal which are respectively connected with the first data transmission terminal and the first data receiving terminal in one-to-one correspondence; the first data transmitting terminal and the first data receiving terminal are also connected to a ground terminal through a first TVS pipe and a second TVS pipe, respectively.
5. The data communication device for vehicle camera software upgrade of claim 4, wherein the IIC communication chip further comprises a first ground pin, the first connection port further comprises a first ground terminal interfacing with the first ground pin, and the second connection port further comprises a second ground terminal interfacing with the first ground terminal.
6. The data communication device for vehicle camera software upgrade of claim 1, wherein the RS232 communication chip comprises a second data transmitting pin and a second data receiving pin; the third connection port comprises a third data transmission terminal and a third data receiving terminal, the second data transmission pin is connected to the third data transmission terminal through a third resistor R3, the second data receiving pin is connected to the third data receiving terminal through a fourth resistor R4, and the fourth connection port comprises a fourth data receiving terminal and a fourth data transmission terminal which are respectively connected with the third data transmission terminal and the third data receiving terminal in a one-to-one correspondence manner; the third data transmitting terminal and the third data receiving terminal are also connected to a ground terminal through a third TVS pipe and a fourth TVS pipe, respectively.
7. The data communication device for vehicle camera software upgrade of claim 6, wherein the RS232 communication chip further comprises a second ground pin, the third connection port further comprises a third ground terminal interfacing with the second ground pin, and the fourth connection port further comprises a fourth ground terminal interfacing with the third ground terminal.
8. The data communication device for upgrading software of a vehicle-mounted camera according to claim 3, wherein the USB port, the first connection port, the IIC communication chip, the third connection port, the RS232 communication chip, the USB extension chip, the voltage conversion module, and the power supply port module are all integrated on the same PCB.
9. The data communication device for upgrading vehicle-mounted camera software according to claim 8, wherein the power supply port module is a pin header assembled on the PCB circuit board, the pin header including first and second pins as the first and second voltage terminals, respectively, and a third pin connected to a power IO port of the IIC communication chip or a power IO port of the RS232 communication chip; the connector is a jump cap or a jump wire assembled on the pin header.
10. The data communication device for upgrading vehicle-mounted camera software according to claim 9, wherein the first pin header, the second pin header and the third pin header are respectively three pins sequentially adjacent to each other on the pin header, and the first pin header and the second pin header are respectively located on two opposite sides of the third pin header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202322612468.3U CN220896784U (en) | 2023-09-25 | 2023-09-25 | Data communication device for upgrading vehicle-mounted camera software |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322612468.3U CN220896784U (en) | 2023-09-25 | 2023-09-25 | Data communication device for upgrading vehicle-mounted camera software |
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| CN220896784U true CN220896784U (en) | 2024-05-03 |
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| CN202322612468.3U Active CN220896784U (en) | 2023-09-25 | 2023-09-25 | Data communication device for upgrading vehicle-mounted camera software |
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