Control circuit board and vehicle-mounted domain controller

Abstract

The utility model provides a control circuit board and a vehicle-mounted domain controller, the control circuit board comprises a board body, a connector, a microprocessor and a transceiver, and the connector, the microprocessor and the transceiver are all installed on the board body; the microprocessor is provided with a plurality of input and output interfaces, the plurality of input and output interfaces are respectively connected with the connector, part of the input and output interfaces are connected with the connector through the transceiver, and chip resistor setting positions are reserved between the transceiver and the input and output interfaces connected with the transceiver. Wherein the microprocessor is provided with a plurality of input and output interfaces, and the plurality of input and output interfaces are respectively connected with the connector, so that the hardware architecture of the AK1 ultrasonic radar is met; when a chip resistor is pasted at the chip resistor setting position, the corresponding input / output interface is connected with the connector through the transceiver, so that the hardware architecture of the AK2 ultrasonic radar is met, and the compatibility of the AK1 ultrasonic radar scheme and the AK2 ultrasonic radar scheme is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent automobiles, and in particular to a control circuit board and a vehicle-mounted domain controller. Background Art

[0002] With the increasing demand for smart driving-related functions in automobiles and the improvement of the computing power of smart driving-related chips, automobiles have higher and higher requirements for the perception accuracy, distance, and anti-interference capabilities of their various cameras, radars and other sensors. The same is true for ultrasonic radars.

[0003] In the traditional parking process, ultrasonic radar is only needed to detect obstacles in the driver's blind spot and sound an alarm. Therefore, the functional requirements of the sensor itself are not high. This generation of ultrasonic radar is called AK1 ultrasonic radar. With the improvement of the level of intelligent driving of automobiles, more and more functions need to be realized, and the recognition scenes are becoming more and more complex. The traditional AK1 radar gradually fails to meet the vehicle's recognition requirements for complex environments. Therefore, various automobile companies have successively launched a new generation of AK2 ultrasonic radars. Since AK2 ultrasonic radar has improved the target recognition distance, number, signal anti-interference degree and functional safety compared to AK1, the software and hardware level of intelligent driving related controllers, whether it is algorithm processing, chip selection and interface allocation, the electrical and signal interface definitions of the controller and the whole vehicle are different.

[0004] The industry is currently in a period where the demand for AK1 ultrasonic radar and AK2 ultrasonic radar coexists. For different vehicle project types, two different hardware solutions need to be designed to match the use of different ultrasonic radars. Utility Model Content

[0005] The utility model provides a control circuit board and a vehicle-mounted domain controller, which are used to provide a vehicle-mounted domain controller designed to be compatible with AK1 and AK2 ultrasonic radar solutions.

[0006] The utility model provides a control circuit board, comprising a board body, a connector, a microprocessor and a transceiver, wherein the connector, the microprocessor and the transceiver are all mounted on the board body; the microprocessor has a plurality of input and output interfaces, and the plurality of input and output interfaces are respectively connected to the connector, wherein some of the input and output interfaces are connected to the connector through the transceiver, and a chip resistor setting position is reserved between the transceiver and the input and output interfaces connected to the transceiver.

[0007] A control circuit board provided by the utility model further includes a load switch, and the microprocessor is connected to the connector through the load switch.

[0008] According to a control circuit board provided by the utility model, the microprocessor has multiple power interfaces, and the multiple power interfaces are respectively connected to the connector through the load switch to form multiple power paths, and each power path is used to power multiple ultrasonic radars.

[0009] According to a control circuit board provided by the utility model, the microprocessor has three power interfaces, and the three power interfaces are respectively connected to the load switch and the connector to form three power paths, and each power path can supply power to three ultrasonic radars.

[0010] According to a control circuit board provided by the utility model, there are multiple transceivers, each of which has multiple serial interfaces, and each of which can be configured with multiple ultrasonic radars.

[0011] According to a control circuit board provided by the utility model, there are two transceivers, and each of the transceivers has two serial interfaces.

[0012] According to a control circuit board provided by the utility model, the transceiver is a DSI3 network protocol transceiver chip.

[0013] According to a control circuit board provided by the utility model, the DSI3 network protocol transceiver chip has two DSI3 interfaces, and each of the DSI3 interfaces is connected to the connector.

[0014] A control circuit board provided by the utility model further includes a chip resistor, and each chip resistor setting position is equipped with a chip resistor.

[0015] The utility model also provides a vehicle-mounted domain controller, which comprises a housing and a control circuit board as described in any one of the above items, wherein the control circuit board is installed in the housing.

[0016] The control circuit board and the vehicle-mounted domain controller provided by the utility model have a microprocessor with multiple input and output interfaces, and the multiple input and output interfaces are respectively connected to the connector, so as to meet the hardware architecture of the AK1 ultrasonic radar; when the chip resistor is set at the chip resistor setting position, the corresponding input and output interface is connected to the connector through the transceiver, so as to meet the hardware architecture of the AK2 ultrasonic radar, thereby adjusting the ultrasonic radar solution adapted to the control circuit by adjusting the setting of the chip resistor, thereby achieving compatibility between the AK1 ultrasonic radar solution and the AK2 ultrasonic radar solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a logical structure diagram of the control circuit board provided by the utility model.

[0019] Reference numerals:

[0020] 10. Connector; 20. Microprocessor; 30. Transceiver; 40. Load switch; 100. Ultrasonic radar. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The term "first" or "second" in the specification and claims of the utility model may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the related objects are in an "or" relationship.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Combine the following Figure 1 The control circuit board of the utility model is described.

[0026] The utility model provides a control circuit board, such as Figure 1 As shown, the control circuit board includes a board body, a connector 10, a microprocessor 20 and a transceiver 30, and the connector 10, the microprocessor 20 and the transceiver 30 are all mounted on the board body. The microprocessor 20 has a plurality of input and output interfaces, and the plurality of input and output interfaces are respectively connected to the connector 10. Among them, some of the input and output interfaces are connected to the connector 10 through the transceiver 30, and a chip resistor setting position is reserved between the transceiver 30 and the input and output interfaces connected to the transceiver 30.

[0027] like Figure 1 As shown, there are two transceivers 30, each of which has multiple serial interfaces, and each serial interface is connected to the connector 10 via a serial communication line. Each serial interface can be connected to 1 to 6 ultrasonic radars 100 according to the topology scheme, and different ultrasonic radars 100 are distinguished by assigning different addresses. Figure 1 As shown, each serial interface is configured with three ultrasonic radars 100 to prevent the communication signal processing time from being too long due to the large amount of data on a single serial interface. Each transceiver 30 also has an INTB-interrupt output interface, a DCR-DSI interface ready state output interface, an RFC-chip communication ready state output interface, a CLKREF-reference clock input interface, a RESB-RESET signal input interface and an SPI interface. The INTB-interrupt output interface, the DCR-2-way DSI interface ready state output interface, the RFC-chip communication ready state output interface, the CLKREF-reference clock input interface, the RESB-RESET signal input interface and the SPI interface are respectively connected to the corresponding input and output interfaces on the microprocessor 20. Among them, there are two DCR-DSI interface ready state output interfaces.

[0028] The connector 10 converts the ultrasonic radar signal into two groups of TX / RX signals and then connects them to the input and output interface of the microprocessor 20. Taking twelve ultrasonic radars 100 as an example, after each ultrasonic radar signal is connected to the connector 10 through a DATA line, it is converted into two groups of TX / RX signals through the interface circuit inside the connector 10, and then the two groups of TX / RX signals are respectively transmitted to the microprocessor 20, meeting the hardware architecture of the AK1 ultrasonic radar. The chip resistor is placed at the chip resistor setting position, and the chip resistor is used to connect part of the input and output interface of the input and output interface to the transceiver 30, thereby meeting the hardware architecture of the AK2 ultrasonic radar.

[0029] In the control circuit board provided by the embodiment of the utility model, the microprocessor 20 has multiple input and output interfaces, and the multiple input and output interfaces are respectively connected to the connector 10, so as to meet the hardware architecture of the AK1 ultrasonic radar; when the chip resistor is set at the chip resistor setting position, the corresponding input and output interface is connected to the connector 10 through the transceiver 30, so as to meet the hardware architecture of the AK2 ultrasonic radar, thereby adjusting the ultrasonic radar solution adapted to the control circuit by adjusting the setting of the chip resistor, thereby achieving compatibility between the AK1 ultrasonic radar solution and the AK2 ultrasonic radar solution.

[0030] like Figure 1 As shown, the control circuit board also includes a load switch 40, and the microprocessor 20 is provided with a power interface, which is connected to the power supply port on the connector 10 through the load switch 40. Specifically, the microprocessor 20 has multiple power interfaces, and the multiple power interfaces are respectively connected to the connector 10 through the load switch 40 to form multiple power paths. Each power path is used to power multiple ultrasonic radars 100.

[0031] Taking the AK1 solution of twelve ultrasonic radars 100 as an example, after each ultrasonic radar 100 signal is connected to the connector 10 via a DATA line, it is converted into two groups of TX / RX signals through the interface circuit inside the connector 10, and then the two groups of TX / RX signals are respectively transmitted to the microprocessor 20. Therefore, the twelve ultrasonic radars 100 occupy a total of 18 interfaces of the connector 10 and 27 input and output interfaces. When the AK2 solution is adopted for twelve ultrasonic radars 100, three ultrasonic radars 100 form a group, and each group of ultrasonic radars is connected to the transceiver 30. Each transceiver 30 has eight interfaces connected to the microprocessor 20, including INTB-interrupt output interface, DCR-DSI interface ready state output interface, RFC-chip communication ready state output interface, CLKREF-reference clock input interface, RESB-RESET signal input interface and SPI interface. Therefore, in the AK2 ultrasonic radar solution, 16 input and output interfaces in the microprocessor 20 are respectively connected to two transceivers 30, and 3 power supply interfaces are respectively connected to the load switch 40, occupying a total of 19 interfaces in the microprocessor 20.

[0032] Specifically, the microprocessor 20 is provided with three power interfaces, and the three power interfaces are connected to the power supply port on the connector 10 through the load switch 40. The microprocessor 20 controls the load switch 40 to open the corresponding power path by controlling the output signals of the three power interfaces. Each power path can power multiple ultrasonic radars 100. For example, each power path can power three ultrasonic radars 100.

[0033] Compared with the AK1 ultrasonic radar, the AK2 ultrasonic radar recognizes more target information and transmits a larger amount of data. Therefore, the AK2 ultrasonic radar data transmission adopts the DSI3 communication protocol, and a dedicated DSI3 protocol transceiver chip needs to be integrated in the domain controller to process the radar output signal. For this purpose, the transceiver 30 adopts the DSI3 network protocol transceiver chip. For example, Figure 1 As shown, the transceiver 30 is an E521.42 chip developed by ELMOS for the AK2 ultrasonic radar solution. Each E521.42 chip provides two DSI3 interfaces, and each DSI3 interface is connected to an interface on the connector 10 .

[0034] An embodiment of the utility model further provides a vehicle-mounted domain controller, which comprises a housing and the control circuit board as described above, wherein the control circuit board is installed in the housing.

[0035] By adopting the control circuit board as described above, the vehicle-mounted domain controller can adapt to both AK1 ultrasonic radar and AK2 ultrasonic radar, thereby reducing manufacturing costs and meeting installation requirements in different scenarios.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A control circuit board, characterized in that: It includes a board body, a connector, a microprocessor and a transceiver, wherein the connector, the microprocessor and the transceiver are all mounted on the board body; the microprocessor has a plurality of input and output interfaces, and the plurality of input and output interfaces are respectively connected to the connector, wherein some of the input and output interfaces are connected to the connector through the transceiver, and a chip resistor setting position is reserved between the transceiver and the input and output interfaces connected to the transceiver.

2. The control circuit board according to claim 1, characterized in that: A load switch is also included, and the microprocessor is connected to the connector via the load switch.

3. The control circuit board according to claim 2, characterized in that: The microprocessor has a plurality of power interfaces, and the plurality of power interfaces are respectively connected to the connector through the load switch to form a plurality of power paths, and each of the power paths is used to supply power to a plurality of ultrasonic radars.

4. The control circuit board according to claim 3, characterized in that: The microprocessor has three power interfaces, and the three power interfaces are respectively connected to the load switches and the connector to form three power paths, and each power path can supply power to three ultrasonic radars.

5. The control circuit board according to claim 1, characterized in that: There are multiple transceivers, each of which has multiple serial interfaces, and each of which can be configured with multiple ultrasonic radars.

6. The control circuit board according to claim 5, characterized in that: There are two transceivers, and each of the transceivers has two serial interfaces.

7. The control circuit board according to claim 1 or 5, characterized in that: The transceiver is a DSI3 network protocol transceiver chip.

8. The control circuit board according to claim 7, characterized in that: The DSI3 network protocol transceiver chip has two DSI3 interfaces, and each of the DSI3 interfaces is connected to the connector.

9. The control circuit board according to claim 1, characterized in that: It also includes a chip resistor, and each chip resistor setting position is installed with a chip resistor.

10. A vehicle-mounted domain controller, characterized in that: It comprises a housing and a control circuit board as claimed in any one of claims 1 to 9, wherein the control circuit board is installed in the housing.

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