Vehicle-mounted positioning module and vehicle

Abstract

The utility model discloses a vehicle-mounted positioning module and a vehicle, and is applied to the vehicle, and the vehicle-mounted positioning module comprises a first antenna which is used for receiving a first positioning analog signal of the vehicle; the second antenna is used for receiving a second positioning analog signal of the vehicle; a first global navigation satellite system (GNSS) chip which is in communication connection with the first antenna and is used for processing the first positioning analog signal to obtain a first positioning digital signal; the second GNSS chip is in communication connection with the second antenna and is used for processing the second positioning analog signal to obtain a second positioning digital signal; and the micro-control unit is in communication connection with the first GNSS chip and the second GNSS chip, and the micro-control unit is used for determining the position of the vehicle according to the first positioning digital signal and / or the second positioning digital signal. According to the scheme, the double GNSS chips and the double antennas are arranged, so that the positioning and orientation functions can be realized, and the positioning precision of the vehicle is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle communication, and more particularly, to a vehicle-mounted positioning module and a vehicle. BACKGROUND

[0002] With the development of vehicle intelligence, the positioning function plays a key role in the realization of the basic function of the vehicle-mounted product, and the positioning accuracy of the vehicle-mounted product is also relatively high. The single-module positioning technology is currently used in the vehicle-mounted industry, which may lose the positioning function in the case of interference, and the positioning accuracy of the single-module positioning technology is low. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a vehicle-mounted positioning module and a vehicle. The various aspects related to the embodiments of the present application are introduced below.

[0004] In a first aspect, a vehicle-mounted positioning module is provided, which is applied to a vehicle and includes: a first antenna configured to receive a first positioning analog signal of the vehicle; a second antenna configured to receive a second positioning analog signal of the vehicle; a first global navigation satellite system (GNSS) chip in communication connection with the first antenna and configured to obtain a first positioning digital signal by processing the first positioning analog signal; a second GNSS chip in communication connection with the second antenna and configured to obtain a second positioning digital signal by processing the second positioning analog signal; and a micro control unit in communication connection with the first GNSS chip and the second GNSS chip, the micro control unit being configured to determine a position of the vehicle according to the first positioning digital signal and / or the second positioning digital signal.

[0005] As a possible implementation manner, the micro control unit is configured to determine the position of the vehicle according to a phase difference between the first positioning digital signal and the second positioning digital signal and an amplitude difference between the first positioning digital signal and the second positioning digital signal.

[0006] As a possible implementation manner, the vehicle-mounted positioning module further includes an inertial measurement unit configured to collect inertial data of a motion of the vehicle, and the micro control unit is configured to determine the position of the vehicle according to the first positioning digital signal and / or the second positioning digital signal and the inertial data.

[0007] As a possible implementation manner, the vehicle-mounted positioning module further includes an Ethernet chip in communication connection with the micro control unit, and the micro control unit is configured to perform Ethernet data communication with a device outside the vehicle-mounted positioning module through the Ethernet chip.

[0008] As a possible implementation manner, the vehicle-mounted positioning module further comprises a controller area network (CAN) chip in communication connection with the micro control unit; and the micro control unit is configured to perform CAN network data communication with a device outside the vehicle-mounted positioning module through the CAN chip.

[0009] As a possible implementation manner, the vehicle-mounted positioning module further comprises a serial transceiver chip in communication connection with the micro control unit; and the micro control unit is configured to perform serial data communication with a device outside the vehicle-mounted positioning module through the serial transceiver chip.

[0010] As a possible implementation manner, the vehicle-mounted positioning module further comprises a non-volatile memory in communication connection with the micro control unit, configured to store communication data of the micro control unit.

[0011] As a possible implementation manner, the micro control unit comprises a general purpose input / output (GPIO) pin, configured to perform GPIO data communication with a device outside the vehicle-mounted positioning module.

[0012] As a possible implementation manner, the micro control unit further comprises a wake-up register, configured to configure a target signal, the target signal being configured to wake up the micro control unit; and the target signal comprises one or more of an interrupt signal and a clock signal.

[0013] In a second aspect, a vehicle is provided, comprising the vehicle-mounted positioning module according to the first aspect or any implementation manner of the first aspect.

[0014] The vehicle-mounted positioning module provided in the present application comprises: a first antenna configured to receive a first positioning analog signal of a vehicle; a second antenna configured to receive a second positioning analog signal of the vehicle; a first global navigation satellite system (GNSS) chip in communication connection with the first antenna, configured to process the first positioning analog signal to obtain a first positioning digital signal; a second GNSS chip in communication connection with the second antenna, configured to process the second positioning analog signal to obtain a second positioning digital signal; and a micro control unit in communication connection with the first GNSS chip and the second GNSS chip, the micro control unit being configured to determine a position of the vehicle according to the first positioning digital signal and / or the second positioning digital signal. In the present application, by arranging the double GNSS chips and the double antennas, and by processing the positioning signals of the double antennas by the micro control unit and the double GNSS chips, the positioning and orientation functions can be realized, and the positioning accuracy of the vehicle is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 FIG. 1 is a structural schematic diagram of a vehicle-mounted positioning module according to an embodiment of the present application.

[0016] Figure 2 is a structural schematic diagram of a vehicle-mounted positioning module provided by another embodiment of the present application.

[0017] Figure 3 is a structural schematic diagram of a vehicle provided by an embodiment of the present application. DETAILED DESCRIPTION

[0018] In order to enable persons skilled in the art to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by persons skilled in the art based on the embodiments of the present application shall fall within the scope of protection of the present application.

[0019] Reference herein to“an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent of other embodiments. It is explicitly and implicitly understood that the embodiments described herein can be combined.

[0020] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms“center”,“upper”,“lower”,“left”,“right”,“vertical”,“horizontal”,“inner”,“outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. The terms“first”,“second”,“third” are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms“mounting”,“connecting”,“connecting” should be understood broadly, for example, it can be fixed connection, or detachable connection; it can be direct connection, or indirect connection through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0021] The terms“include”,“contain” or any other variant thereof are intended to cover non-exclusive inclusion, in addition to including the listed elements, other elements not explicitly listed can also be included.

[0022] With the development of vehicle intelligence, the positioning function plays a key role in the realization of the basic function of the vehicle-mounted product, and the positioning accuracy of the vehicle-mounted product is relatively high. The single module positioning technology is currently used in the vehicle-mounted industry, which may lose the positioning function in the case of interference, and the positioning accuracy of the single module positioning technology is low.

[0023] To solve the above problems, the application provides a vehicle-mounted positioning module, which comprises: a first antenna for receiving a first positioning analog signal of a vehicle; a second antenna for receiving a second positioning analog signal of the vehicle; a first global navigation satellite system (GNSS) chip in communication connection with the first antenna, for processing the first positioning analog signal to obtain a first positioning digital signal; a second GNSS chip in communication connection with the second antenna, for processing the second positioning analog signal to obtain a second positioning digital signal; a micro control unit in communication connection with the first GNSS chip and the second GNSS chip, the micro control unit being configured to determine the position of the vehicle according to the first positioning digital signal and / or the second positioning digital signal. The present application sets two GNSS chips and two antennas, and processes the positioning signals of the two antennas through the micro control unit and the two GNSS chips, so as to realize the positioning and orientation functions and improve the positioning accuracy of the vehicle. The vehicle-mounted positioning module in the embodiments of the application will be described in detail below with reference to the accompanying drawings.

[0024] Figure 1 A vehicle-mounted positioning module is provided in the embodiments of the application. The vehicle-mounted positioning module in the embodiments of the application can be applied to a vehicle, which can be an electric vehicle, a fuel vehicle or a hybrid vehicle, and the application does not make specific limitation thereon. Referring to Figure 1 , the vehicle-mounted positioning module can comprise a micro control unit (MCU) 110, a first global navigation satellite system (GNSS) chip 120, a second GNSS chip 130, a first antenna 140 and a second antenna 150.

[0025] The first antenna 140 can be used to receive a first positioning analog signal (such as a high-frequency carrier analog signal) of the vehicle; the second antenna 150 can be used to receive a second positioning analog signal (such as a high-frequency carrier analog signal) of the vehicle; it should be understood that the first positioning analog signal and the second positioning analog signal are both positioning analog signals sent by a positioning satellite. The first antenna 140 and the second antenna 150 can be vehicle-mounted antennas, such as whip antennas or stealth antennas, etc.

[0026] The first GNSS chip 120 is in communication connection with the first antenna 140, and the first GNSS chip 120 can be used to obtain the first positioning digital signal by processing the first positioning analog signal. For example, the first GNSS chip 120 can convert the received first positioning analog signal into the first positioning digital signal through signal demodulation. It should be understood that the first positioning digital signal can include the pseudo-random code (PRN code) and navigation message of the positioning satellite.

[0027] The second GNSS chip 130 is in communication connection with the second antenna 150, and the second GNSS chip 130 can be used to obtain the second positioning digital signal by processing the second positioning analog signal. For example, the second GNSS chip 130 can convert the received second positioning analog signal into the second positioning digital signal through signal demodulation. It should be understood that the second positioning digital signal can include the pseudo-random code (PRN code) and navigation message of the positioning satellite.

[0028] The micro control unit 110 is in communication connection with the first GNSS chip 120 and the second GNSS chip 130, and the micro control unit 110 is used to determine the position of the vehicle according to the first positioning digital signal and / or the second positioning digital signal.

[0029] In some implementations, the micro control unit 110 is used to determine the position of the vehicle according to the phase difference between the first positioning digital signal and the second positioning digital signal, and the amplitude difference between the first positioning digital signal and the second positioning digital signal.

[0030] It should be noted that according to the signal interference or satellite failure, etc., the micro control unit 110 can adaptively select the single-antenna mode or the dual-antenna mode to realize the positioning function.

[0031] It should be understood that after the position information of the vehicle is calculated, the micro control unit 110 will provide the position data to the vehicle application processor or the vehicle host system to guide the safe and reliable driving of the vehicle.

[0032] In some implementations, the application can also realize the directional function (the directional function can refer to determining the direction of the signal source) by setting the dual-antenna. The application does not make specific limitation on the algorithm for realizing the directional function. For example, the phase comparison method can be used to determine the direction of the signal source by comparing the phase difference of the signal between the two antennas. For another example, the amplitude comparison method can also be used to determine the direction of the signal source by comparing the amplitude difference of the signal on different antennas.

[0033] According to the above introduction, it can be seen that the scheme can realize the positioning and directional functions by setting the dual GNSS chip and the dual antenna, and processing the positioning signals of the dual antenna by the micro control unit 110 and the dual GNSS chip, thereby improving the positioning accuracy of the vehicle.

[0034] The following describes the embodiments of the present application in more detail with reference to specific examples. Figure 2 The present invention is intended only to help those skilled in the art understand the embodiments of the present invention, and is not intended to limit the embodiments of the present invention to the specific numerical values ​​or specific scenarios illustrated. Those skilled in the art can obviously make various equivalent modifications or changes based on the examples given, and such modifications or changes also fall within the scope of the embodiments of the present invention.

[0035] Figure 2 yes Figure 1 A more detailed structural diagram of the vehicle positioning module is shown in FIG. Figure 2 The MCU in is equivalent to Figure 1 The microcontroller unit 110 in Figure 2 The GNSS_1 chip in the Figure 1 The first GNSS chip 120, Figure 2 The GNSS_2 chip in the Figure 1 The second GNSS chip 130 , the GNSS_1 chip and the GNSS_2 chip can be communicatively connected to the positioning antennas through external connection ports (not shown in the figure).

[0036] In some implementations, see Figure 2 The vehicle positioning module also includes an inertial measurement unit (IMU). The IMU can be used to collect inertial data of vehicle movement; the IMU is communicated with the MCU, for example, the IMU and the MCU can be communicated via a serial peripheral interface (SPI). The MCU can be used to determine the position of the vehicle based on the first positioning digital signal and / or the second positioning digital signal, as well as the inertial data. It should be understood that fusing the data collected by the IMU with the data of the dual positioning chip (such as the GNSS_1 chip and the GNSS_2 chip) can improve positioning accuracy and reliability.

[0037] In some implementations, see Figure 2 The vehicle positioning module also includes an Ethernet chip, which is connected to the MCU for communication. For example, the Ethernet chip and the MCU can be connected through a reduced gigabit media independent interface (RGMII). The MCU can be used to perform Ethernet data communication with devices outside the vehicle positioning module through the Ethernet chip (for example, an Ethernet transmission speed of up to 100 Mbps (megabits per second)) to increase data transmission speed.

[0038] In some implementations, continuing to refer to Figure 2 , the vehicle-mounted positioning module further comprises a controller area network (CAN) chip. The CAN chip is in communication connection with the micro control unit; the MCU is configured to perform CAN network data communication with devices outside the vehicle-mounted positioning module through the CAN chip.

[0039] In some implementations, the CAN chip can comprise a CAN transceiver chip and a CAN combination chip. The CAN transceiver chip and the CAN combination chip can refer to a CAN chip in which a CAN controller and a transceiver are combined. The CAN combination chip is mainly used to implement the CAN communication protocol. The CAN transceiver chip is mainly used to implement the physical layer communication of the CAN network.

[0040] In some implementations, continuing to refer to Figure 2 , the vehicle-mounted positioning module further comprises a serial transceiver chip. The serial transceiver chip is in communication connection with the MCU, for example, the serial transceiver chip and the MCU can be in communication connection through a UART protocol; the MCU is configured to perform serial data communication with devices outside the vehicle-mounted positioning module through the serial transceiver chip. In some implementations, the serial transceiver chip can be, for example, a universal asynchronous receiver / transmitter (UART) chip.

[0041] As can be seen from the above, the embodiments of the present application can simultaneously support serial communication, CAN communication and Ethernet communication, so that the vehicle-mounted positioning module in the embodiments of the present application can be adapted to different types of vehicles.

[0042] In some implementations, continuing to refer to Figure 2 , the vehicle-mounted positioning module further comprises a non-volatile memory (NORFLASH). The non-volatile memory is in communication connection with the MCU, for example, the non-volatile memory and the MCU can be in communication connection through an SPI interface. The non-volatile memory is configured to store communication data of the MCU.

[0043] In some implementations, continuing to refer to Figure 2 , the MCU comprises a general-purpose input / output pin (GPIO). The GPIO is configured to perform GPIO data communication with devices outside the vehicle-mounted positioning module. It should be understood that the MCU can comprise a plurality of general-purpose input / output pins (GPIOs).

[0044] In some implementations, continuing to refer to Figure 2The MCU further comprises a wake-up register (e.g., WINKUP0). The wake-up register is configured to configure a target signal, and the MCU is woken up by receiving the target signal. The target signal comprises one or more of an interrupt signal and a clock signal.

[0045] It should be noted that, continuing to refer to Figure 3 The vehicle-mounted positioning module in the embodiment of the present application further comprises a DCDC converter, a low dropout regulator (LDO), and a watchdog timer (WDG). The LDO is a kind of linear regulator, which can provide a stable output voltage in the case of input voltage fluctuation. The WDG is used to detect whether there is an abnormal situation in the system, such as program runaway, dead loop, etc.

[0046] It should be noted that, the GNSS_1 chip and the GNSS_2 chip can also be connected through the UART protocol, that is, the GNSS_1 chip and the GNSS_2 chip can exchange data through the UART interface.

[0047] The embodiment of the present application further provides a vehicle, as shown in the figure, the vehicle 300 comprises any type of vehicle-mounted positioning module mentioned in the foregoing. ​

[0048] It should be noted that, the embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other. It should be pointed out that, for those skilled in the art, without departing from the principle of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

[0049] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.​

Claims

1. A vehicle-mounted positioning module, characterized in that: Applied to vehicles, including: a first antenna, configured to receive a first positioning analog signal of the vehicle; a second antenna, configured to receive a second positioning analog signal of the vehicle; a first global navigation satellite system (GNSS) chip, communicatively connected to the first antenna, and configured to process the first positioning analog signal to obtain a first positioning digital signal; a second GNSS chip, communicatively connected to the second antenna, and configured to process the second positioning analog signal to obtain a second positioning digital signal; A micro control unit is communicatively connected to the first GNSS chip and the second GNSS chip, and the micro control unit is used to determine the position of the vehicle according to the first positioning digital signal and / or the second positioning digital signal.

2. The vehicle-mounted positioning module according to claim 1, characterized in that: The micro control unit is used for: The position of the vehicle is determined according to a phase difference between the first positioning digital signal and the second positioning digital signal, and an amplitude difference between the first positioning digital signal and the second positioning digital signal.

3. The vehicle-mounted positioning module according to claim 1, characterized in that: The vehicle-mounted positioning module also includes: an inertial measurement unit, configured to collect inertial data of the vehicle's motion; The micro control unit is configured to determine the position of the vehicle according to the first positioning digital signal and / or the second positioning digital signal, and the inertial data.

4. The vehicle-mounted positioning module according to any one of claims 1 to 3, characterized in that: The vehicle-mounted positioning module also includes: An Ethernet chip, communicatively connected to the micro control unit; The micro control unit is used to perform Ethernet data communication with a device outside the vehicle-mounted positioning module through the Ethernet chip.

5. The vehicle-mounted positioning module according to any one of claims 1 to 3, characterized in that: The vehicle-mounted positioning module also includes: A controller area network (CAN) chip, communicatively connected to the microcontroller unit; The micro control unit is used to perform CAN network data communication with a device outside the vehicle-mounted positioning module through the CAN chip.

6. The vehicle-mounted positioning module according to any one of claims 1 to 3, characterized in that: The vehicle-mounted positioning module also includes: A serial port transceiver chip, communicatively connected to the micro control unit; The micro control unit is used to perform serial port data communication with a device outside the vehicle-mounted positioning module through the serial port transceiver chip.

7. The vehicle-mounted positioning module according to any one of claims 1 to 3, characterized in that: The vehicle-mounted positioning module also includes: A non-volatile memory is communicatively connected to the micro control unit and is used to store communication data of the micro control unit.

8. The vehicle-mounted positioning module according to any one of claims 1 to 3, characterized in that: The micro control unit comprises: The general purpose input and output pin GPIO is used to perform GPIO data communication with a device outside the vehicle-mounted positioning module.

9. The vehicle-mounted positioning module according to any one of claims 1 to 3, characterized in that: The micro control unit also includes: A wake-up register, used to configure a target signal, wherein the target signal is used to wake up the micro control unit; The target signal includes one or more of the following: an interrupt signal and a clock signal.

10. A vehicle, characterized in that: include: The vehicle-mounted positioning module according to any one of claims 1 to 9.

Images