A radar component with multiple working modes and a control method

Abstract

The present invention provides a multi-mode radar component and a control method. The radar component includes an environmental monitoring module, a scene recognition module, and a switching control module. The environmental monitoring module is used to monitor the environmental perception data around the vehicle. The scene recognition module is used to identify the current driving scene of the vehicle according to the monitored environmental perception data around the vehicle and the self-vehicle driving state information. The switching control module is used to switch the transceiver antenna adapted to the current driving scene of the vehicle according to the current driving scene of the vehicle and switch to the corresponding working mode. The present invention provides a radar component with a multi-antenna design and multiple working modes, which can identify different driving scenes and switch different working modes according to different driving scenes, ensuring that the sensing range of the radar adapts to the current driving environment, so as to optimize the radar detection performance.

Description

Technical Field

[0001] The present invention relates to the field of driving control, and more particularly, to a multi-mode radar component and a control method thereof. Background Art

[0002] Millimeter-wave radar is an important environmental perception sensor in the field of intelligent driving. Currently, the commonly used millimeter-wave radars are divided into two types: long-range radar and short-range radar, and the pitch angle and horizontal angle of the radar are fixed, and it is impossible to switch different working modes according to different scenarios to optimize the performance of the radar. Summary of the Invention

[0003] The present invention provides a multi-mode radar component and a control method for solving the technical problems existing in the prior art.

[0004] According to a first aspect of the present invention, there is provided a multi-mode radar component, including an environmental monitoring module, a scene recognition module, and a switching control module;

[0005] The environmental monitoring module is configured to monitor environmental perception data around the vehicle;

[0006] The scene recognition module is configured to identify the current driving scene of the vehicle according to the monitored environmental perception data around the vehicle and the self-vehicle driving state information;

[0007] The switching control module is configured to switch the transceiver antenna adapted to the current driving scene of the vehicle according to the current driving scene of the vehicle and switch to the corresponding working mode.

[0008] Based on the above technical solutions, the present invention can also be improved as follows.

[0009] Optionally, a plurality of transmitting antennas and a receiving antenna are installed on the radar component, one of the transmitting antennas is a monitoring antenna, the monitoring antenna and the receiving antenna cooperate as the environmental monitoring module, and the other transmitting antennas are different-scene transmitting antennas, and the current driving scene of the vehicle is a tunnel scene, a highway scene, a congestion scene, or a general scene.

[0010] Optionally, each of the transmitting antennas and the receiving antenna is an antenna array, and the number of arrays and the number of array elements of each array are determined according to requirements.

[0011] According to a second aspect of the present invention, there is provided a control method for a multi-mode radar component, where a plurality of different-scene antenna arrays are installed on the radar component, and the control method includes:

[0012] Detecting environmental perception data around the vehicle;

[0013] Based on the environmental perception data around the vehicle and the driving state information of the host vehicle, identify the current driving scenario of the vehicle;

[0014] According to the current driving scenario of the vehicle, switch the transceiver antenna adapted to the current driving scenario of the vehicle and switch to the corresponding working mode.

[0015] Optionally, the driving state information of the host vehicle includes vehicle speed and body attitude data. The identifying the current driving scenario of the vehicle based on the environmental perception data around the vehicle and the driving state information of the host vehicle includes:

[0016] If the number of stationary targets in the monitoring area ≥ n1 and the number of echo noise points ≥ m1, then determine that the current driving scenario of the vehicle is a tunnel scenario;

[0017] Correspondingly, the switching the transceiver antenna adapted to the current driving scenario of the vehicle and switching to the corresponding working mode according to the current driving scenario of the vehicle includes:

[0018] Control the switch to switch to the tunnel scenario antenna and enter the tunnel scenario working mode.

[0019] Optionally, the identifying the current driving scenario of the vehicle based on the environmental perception data around the vehicle and the driving state information of the host vehicle includes:

[0020] When the number of stationary targets in the monitoring area < n1 and the number of echo noise points < m1, if the vehicle speed ≥ v1 and the number of high-speed moving targets in the monitoring area ≥ n2 or there are continuous guardrail features, then determine that the current driving scenario of the vehicle is a highway scenario;

[0021] Correspondingly, the switching the transceiver antenna adapted to the current driving scenario of the vehicle and switching to the corresponding working mode according to the current driving scenario of the vehicle includes:

[0022] Control the switch to switch to the highway scenario antenna and enter the highway scenario working mode.

[0023] Optionally, the identifying the current driving scenario of the vehicle based on the environmental perception data around the vehicle and the driving state information of the host vehicle includes:

[0024] When the number of stationary targets in the monitoring area < n1 and the number of echo noise points < m1, if the vehicle speed ≥ v1 and the number of high-speed moving targets in the monitoring area < n2 and there are no guardrail features, then determine that the current driving scenario of the vehicle is an ordinary scenario;

[0025] Correspondingly, the switching the transceiver antenna adapted to the current driving scenario of the vehicle and switching to the corresponding working mode according to the current driving scenario of the vehicle includes:

[0026] The control switch switches the three-scenario antennas to work in turn and enters the normal scenario working mode. The three-scenario antennas include a tunnel scenario antenna, a high-speed scenario antenna, and a congestion scenario antenna.

[0027] Optionally, the recognition of the current driving scenario of the vehicle based on the environmental perception data around the vehicle and the self-vehicle driving state information includes:

[0028] When the number of stationary targets in the monitoring area < n1 and the number of echo noise points < m1, if the vehicle speed < v1 and the number of low-speed moving targets in the monitoring area ≥ n3, it is determined that the current driving scenario of the vehicle is a congestion scenario;

[0029] Correspondingly, the switching of the transceiver antenna adapted to the current driving scenario of the vehicle according to the current driving scenario of the vehicle and the switching to the corresponding working mode include:

[0030] The control switch switches the congestion scenario antenna and enters the congestion scenario working mode.

[0031] Optionally, the recognition of the current driving scenario of the vehicle based on the environmental perception data around the vehicle and the self-vehicle driving state information includes:

[0032] When the number of stationary targets in the monitoring area < n1 and the number of echo noise points < m1, if the vehicle speed < v1 and the number of low-speed moving targets in the monitoring area < n3, it is determined that the current driving scenario of the vehicle is a normal scenario;

[0033] Correspondingly, the switching of the transceiver antenna adapted to the current driving scenario of the vehicle according to the current driving scenario of the vehicle and the switching to the corresponding working mode include:

[0034] The control switch switches the three-scenario antennas to work in turn and enters the normal scenario working mode. The three-scenario antennas include a tunnel scenario antenna, a high-speed scenario antenna, and a congestion scenario antenna.

[0035] A multi-working mode radar component and a control method provided by the present invention can recognize different driving scenarios and switch different working modes according to different driving scenarios, ensuring that the sensing range of the radar adapts to the current driving environment, so as to optimize the radar detection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural block diagram of a multi-working mode radar component provided by the present invention;

[0037] Figure 2 It is a hardware framework structure diagram of a multi-working mode radar component;

[0038] Figure 3 It is a schematic diagram of the antenna structure;

[0039] Figure 4 Flow chart of a control method for a multi - working - mode radar component provided by the present invention;

[0040] Figure 5 Flow chart for identifying the current driving scenario of a vehicle. Specific embodiments

[0041] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0042] Embodiment 1

[0043] A multi - working - mode radar component, see Figure 1 , the multi - working - mode radar component includes an environment monitoring module, a scenario recognition module, and a switching control module. Among them, the environment monitoring module is used to monitor the environmental perception data around the vehicle; the scenario recognition module is used to identify the current driving scenario of the vehicle according to the monitored environmental perception data around the vehicle and the self - vehicle driving state information; the switching control module is used to switch the transceiver antennas adapted to the current driving scenario of the vehicle according to the current driving scenario of the vehicle and switch to the corresponding working mode.

[0044] Among them, it can be seen from Figure 2 that multiple transmitting antennas and one receiving antenna are installed on the radar component. One of the transmitting antennas is a monitoring antenna. The monitoring antenna and the receiving antenna cooperate as the environment monitoring module, and the other transmitting antennas are different - scenario transmitting antennas. The current driving scenario of the vehicle is a tunnel scenario, a highway scenario, a congestion scenario, or a normal scenario.

[0045] It can be understood that, see Figure 2 , the digital transmit signal is converted into an analog transmit signal after digital - to - analog conversion, and after being oscillated by a voltage - controlled oscillator, it enters the signal splitting module. The signal splitting module splits the transmit signal into three channels. One channel is transmitted through an amplifier and then through one of the transmitting antennas (monitoring antenna) to monitor the environmental perception data around the vehicle. The transmit signal of another channel is used as the transmit signal of several other transmitting antennas through a control switch. The transmit signal of the third channel and the radar echo signal received by the receiving antenna are processed by a mixer and a low - pass filter to identify the current driving scenario of the vehicle.

[0046] As an embodiment, each of the transmitting antennas and the receiving antenna is an antenna array, and the number of arrays and the number of array elements in each array are determined according to requirements.

[0047] See Figure 3, The transmitting chip is used to control multiple transmitting antennas. The transmitting antennas include a monitoring antenna and multiple different-scenario antennas, and the receiving chip is used to control the receiving antenna. Among them, each transmitting antenna and receiving antenna is an array antenna. As Figure 3 In this case, the monitoring antenna is 1 array, including 10 elements; the congested-scenario antenna includes 2 arrays, with each array having 10 elements; the high-speed-scenario antenna includes 10 arrays, with each array having 10 elements; the tunnel-scenario antenna is 3 arrays, with each array having 9 elements; the receiving antenna includes 2 arrays, with each array having 10 elements.

[0048] Embodiment 2

[0049] A control method for a multi-mode radar component, see Figure 4 , Multiple different-scenario antenna arrays are installed on the radar component. The control method mainly includes:

[0050] S1, Detect the environmental perception data around the vehicle.

[0051] It can be understood that based on the multi-mode radar component in the above Embodiment 1, the environmental perception data around the vehicle is monitored. Among them, as Figure 2 shown, the monitoring antenna and the receiving antenna cooperate to monitor the environmental perception data around the vehicle, such as the target data around the vehicle.

[0052] S2, Based on the environmental perception data around the vehicle and the self-vehicle driving state information, identify the current driving scenario of the vehicle.

[0053] S3, According to the current driving scenario of the vehicle, switch the transceiver antennas adapted to the current driving scenario of the vehicle and switch to the corresponding working mode.

[0054] It can be understood that, see Figure 5 , which is the recognition flowchart for the current driving scenario of the vehicle, mainly including the following recognition steps:

[0055] Step 1: The radar component obtains the environmental perception data around the vehicle based on the monitoring antenna.

[0056] Step 2: The radar obtains the vehicle driving state data from the outside, mainly including vehicle speed and vehicle body attitude data.

[0057] Step 3: Determine whether the number of stationary targets in the radar monitoring area is ≥n1 and whether the number of echo noise points is ≥m1. If the conditions are met, it is determined that the current driving scenario of the vehicle is the tunnel scenario, and the control switch switches to the tunnel-scenario antenna and enters the tunnel-scenario working mode.

[0058] Step 4: If the condition is not met, determine whether the vehicle speed is ≥ V1. If the vehicle speed requirement is met, determine whether the number of high-speed moving targets in the detection area is ≥ n2, or whether continuous guardrail features are detected. If the requirement is met, determine that the current driving scenario of the vehicle is a high-speed scenario, switch the control switch to the high-speed scenario antenna, and enter the high-speed scenario working mode; if the requirement is not met, determine that the current driving scenario of the vehicle is a normal scenario, and enter the transmitting antenna alternating switching mode.

[0059] Step 5: If the vehicle speed requirement is not met, determine whether the number of low-speed moving targets in the monitoring area is ≥ n3. If the condition is met, determine that the current driving scenario of the vehicle is a congestion scenario, switch the control switch to the congestion scenario antenna, and enter the congestion scenario working mode; if the requirement is not met, determine that the current driving scenario of the vehicle is a normal scenario, and enter the transmitting antenna alternating switching mode, that is, the tunnel scenario antenna, the high-speed scenario antenna, and the congestion scenario antenna are alternately switched to work.

[0060] A multi-working-mode radar component and control method provided by an embodiment of the present invention designs a radar component with multiple antennas and multiple working modes. The radar component has a transceiver antenna for monitoring the vehicle driving environment and transceiver antennas in other different modes. According to the echo of the radar monitoring antenna, combined with data such as the vehicle's own speed and driving attitude, and based on a specific recognition logic, the current driving scenario of the vehicle is recognized. After determining the current driving scenario of the vehicle, the radar switches the transceiver antenna adapted to the current scenario through the control switch and switches the working mode to realize the multi-working mode of the radar component.

[0061] It should be noted that in the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0062] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0063] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and combinations of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processors of general purpose computers, special purpose computers, embedded computers or other programmable data processing devices to produce a machine, such that the instructions executed by the processors of the computer or other programmable data processing devices produce means for implementing the functions specified in the flowchart Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0064] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufacture including instruction means that implement the functions specified in the flowchart Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0065] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in the flowchart Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0066] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0067] Obviously, those skilled in the art can make various changes and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A radar component with multiple working modes, characterized in that, The radar component includes an environmental monitoring module, a scene recognition module, and a switching control module; The environmental monitoring module is used to monitor the environmental perception data around the vehicle; The scene recognition module is used to identify the current driving scene of the vehicle according to the monitored environmental perception data around the vehicle and the self-vehicle driving state information; The switching control module is used to switch the transceiver antenna adapted to the current driving scene of the vehicle according to the current driving scene of the vehicle and switch to the corresponding working mode; The self-vehicle driving state information includes vehicle speed and body attitude data. The identifying the current driving scene of the vehicle according to the monitored environmental perception data around the vehicle and the self-vehicle driving state information includes: If the number of stationary targets in the monitoring area ≥ n1 and the number of echo noise points ≥ m1, it is determined that the current driving scene of the vehicle is a tunnel scene; Correspondingly, the switching the transceiver antenna adapted to the current driving scene of the vehicle according to the current driving scene of the vehicle and switching to the corresponding working mode includes: Controlling the switch to switch the tunnel scene antenna and enter the tunnel scene working mode.

2. The multi-operation-mode radar component according to claim 1, characterized in that, A plurality of transmitting antennas and one receiving antenna are installed on the radar component. One of the transmitting antennas is a monitoring antenna. The monitoring antenna and the receiving antenna cooperate as the environmental monitoring module. The other transmitting antennas are different scene transmitting antennas. The current driving scene of the vehicle is a tunnel scene, a highway scene, a congestion scene, or a normal scene.

3. The multi-operation mode radar component according to claim 2, wherein, Each transmitting antenna and the receiving antenna are antenna arrays, and the number of arrays and the number of array elements in each array are determined according to requirements.

4. A control method for a radar component with multiple working modules, characterized in that, A plurality of different scene antenna arrays are installed on the radar component. The control method includes: Detecting the environmental perception data around the vehicle; Identifying the current driving scene of the vehicle based on the environmental perception data around the vehicle and the self-vehicle driving state information; Switching the transceiver antenna adapted to the current driving scene of the vehicle according to the current driving scene of the vehicle and switching to the corresponding working mode; The self-vehicle driving state information includes vehicle speed and body attitude data. The identifying the current driving scene of the vehicle based on the environmental perception data around the vehicle and the self-vehicle driving state information includes: If the number of stationary targets in the monitoring area ≥ n1 and the number of echo noise points ≥ m1, it is determined that the current driving scene of the vehicle is a tunnel scene; Correspondingly, the switching the transceiver antenna adapted to the current driving scene of the vehicle according to the current driving scene of the vehicle and switching to the corresponding working mode includes: Controlling the switch to switch the tunnel scene antenna and enter the tunnel scene working mode.

5. The control method according to claim 4, characterized in that The identifying the current driving scene of the vehicle based on the environmental perception data around the vehicle and the self-vehicle driving state information includes: When the number of stationary targets in the monitoring area < n1 and the number of echo noise points < m1, if the vehicle speed ≥ v1 and the number of high-speed moving targets in the monitoring area ≥ n2 or there are continuous guardrail features, it is determined that the current driving scene of the vehicle is a highway scene; Correspondingly, the switching the transceiver antenna adapted to the current driving scene of the vehicle according to the current driving scene of the vehicle and switching to the corresponding working mode includes: Controlling the switch to switch the highway scene antenna and enter the highway scene working mode.

6. The control method according to claim 4, wherein The identifying of the current driving scene of the vehicle based on the environmental perception data around the vehicle and the driving state information of the vehicle includes: When the number of stationary targets in the monitoring area is less than n1 and the number of echo noise points is less than m1, if the vehicle speed is ≥ v1, and the number of high-speed moving targets in the monitoring area is less than n2 and there is no guardrail feature, the current driving scene of the vehicle is determined to be a normal scene; Accordingly, switching the transceiver antenna adapted to the current driving scene of the vehicle according to the current driving scene of the vehicle and switching to the corresponding working mode includes: The control switch switches the three scene antennas to work in turn and enter the normal scene working mode. The three scene antennas include tunnel scene antenna, high-speed scene antenna and congestion scene antenna.

7. The control method according to claim 4, characterized in that The identifying of the current driving scene of the vehicle based on the environmental perception data around the vehicle and the driving state information of the vehicle includes: When the number of stationary targets in the monitoring area is less than n1 and the number of echo noise points is less than m1, if the vehicle speed is less than v1 and the number of low-speed moving targets in the monitoring area is greater than or equal to n3, the current driving scene of the vehicle is determined to be a congested scene; Accordingly, switching the transceiver antenna adapted to the current driving scene of the vehicle according to the current driving scene of the vehicle and switching to the corresponding working mode includes: Control the switch to switch the congestion scene antenna and enter the congestion scene working mode.

8. The control method according to claim 4, wherein The identifying of the current driving scene of the vehicle based on the environmental perception data around the vehicle and the driving state information of the vehicle includes: When the number of stationary targets in the monitoring area is less than n1 and the number of echo noise points is less than m1, if the vehicle speed is less than v1 and the number of low-speed moving targets in the monitoring area is less than n3, the current driving scene of the vehicle is determined to be a normal scene; Accordingly, switching the transceiver antenna adapted to the current driving scene of the vehicle according to the current driving scene of the vehicle and switching to the corresponding working mode includes: The control switch switches the three scene antennas to work in turn and enter the normal scene working mode. The three scene antennas include tunnel scene antenna, high-speed scene antenna and congestion scene antenna.

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