A millimeter wave radar compensation system and compensation method based on automobile intelligent driving

Abstract

The present invention discloses a millimeter-wave radar compensation system and a compensation method based on automobile intelligent driving in the field of intelligent automobile technology. The millimeter-wave radar compensation system based on automobile intelligent driving comprises an environment detection module, an interference source monitoring module, a radar compensation module, a radar acquisition module and a result output module; the environment detection module is used to detect various environmental interference data affecting millimeter-wave radar detection near the vehicle; the interference source monitoring module is used to monitor interference intensity data and interference factor information exceeding a specified threshold. The present invention can well realize compensation processing of detection time by monitoring the interference intensity and interference factor type of interference factors affecting millimeter-wave radar propagation, thereby making the detection distance more accurate and improving the safety index of the vehicle during driving.

Description

Technical Field

[0001] The present invention relates to the field of intelligent automobile technology, and in particular to a millimeter wave radar compensation system and compensation method based on automobile intelligent driving. Background Art

[0002] Millimeter wave radar uses millimeter waves. Usually millimeter waves refer to the frequency domain of 30 to 300GHz (wavelength of 1 to 10mm). The wavelength of millimeter waves is between centimeter waves and light waves, so millimeter waves have the advantages of both microwave guidance and photoelectric guidance. Compared with centimeter wave seekers, millimeter wave seekers have the characteristics of small size, light weight and high spatial resolution. Compared with optical seekers such as infrared, laser, and television, millimeter wave seekers have strong ability to penetrate fog, smoke, and dust, and have the characteristics of all-weather (except heavy rainy days) and all-day. In addition, the anti-interference and anti-stealth capabilities of millimeter wave seekers are also better than other microwave seekers.

[0003] In the existing intelligent driving process of automobiles, although millimeter radar waves can play a good role in assisting driving, when millimeter radar waves are interfered by environmental factors such as water vapor and oxygen molecules, it is easy to cause distortion of the propagation time of millimeter wave radar, thereby affecting the driver's judgment of safe distance.

[0004] Based on this, the present invention designs a millimeter-wave radar compensation system and compensation method based on automobile intelligent driving to solve the above problems. Summary of the invention

[0005] In order to solve the technical problems mentioned in the current background technology, the purpose of the present invention is to provide a millimeter wave radar compensation system and compensation method based on automobile intelligent driving.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A millimeter wave radar compensation system based on automobile intelligent driving includes an environment detection module, an interference source monitoring module, a radar compensation module, a radar acquisition module and a result output module;

[0008] The environment detection module is used to detect various environmental interference data near the vehicle that affect the millimeter wave radar detection;

[0009] The interference source monitoring module is used to monitor the interference intensity data and interference factor information exceeding the specified threshold;

[0010] The radar compensation module is used to query the compensation time per unit time according to the interference factor of the specified interference intensity;

[0011] The radar acquisition module is used to collect the total time data from the detection to the return of the millimeter wave radar;

[0012] The result output module is used to measure the actual time according to the collected return time data and the compensation time data per unit time, and to measure the detection distance according to the propagation speed of the millimeter wave radar per unit time.

[0013] Preferably, the interference source monitoring module includes an interference intensity monitoring module and an interference factor extraction module;

[0014] The interference intensity monitoring module is used to monitor interference intensity data exceeding a specified threshold;

[0015] The interference factor extraction module is used to extract interference factor information exceeding a specified threshold.

[0016] Preferably, the radar compensation module includes a compensation data storage module and a compensation time query module;

[0017] The compensation data storage module is used to store compensation time data per unit time under various interference factors and interference intensity conditions;

[0018] The compensation time query module is used to query the unit time compensation time data of a specified interference factor under a specified interference intensity.

[0019] Preferably, the radar acquisition module includes a radar detection module and a return time extraction module;

[0020] The radar detection module is used to be installed in the front and rear of the vehicle to perform millimeter wave radar detection;

[0021] The return time extraction module is used to extract the return time information of millimeter wave radar detection.

[0022] Preferably, the result output module includes an actual time measurement module and a detection distance output module;

[0023] The actual time calculation module is used to calculate the actual return time according to the return time detected by the millimeter wave radar and the compensation time per unit time;

[0024] The detection distance output module is used to measure the detection distance according to the propagation speed per unit time and the actual return time of the millimeter wave radar.

[0025] A millimeter wave radar compensation method based on automobile intelligent driving includes the following steps:

[0026] S1. Detect interference intensity data of environmental factors that affect millimeter wave radar propagation;

[0027] S2. When the interference intensity reaches a specified threshold, extract the interference factor information and query the unit time compensation time of the interference factor under the detected interference intensity;

[0028] S3, detecting round-trip time data through millimeter wave radar, and calculating the actual time according to the compensation time per unit time;

[0029] S4. Calculate and output the detection distance based on the actual time and the propagation speed of the millimeter wave radar per unit time.

[0030] Compared with the prior art, the present invention achieves the following beneficial effects: the present invention can well realize the compensation processing of detection time by monitoring the interference intensity and type of interference factors affecting the propagation of millimeter-wave radar, thereby making the detection distance more accurate and improving the safety index of the vehicle during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0032] Figure 1 It is the overall system architecture diagram of the present invention;

[0033] Figure 2 For the present invention Figure 1 System sub-diagram of

[0034] Figure 3 It is a flowchart of the compensation method of the present invention. DETAILED DESCRIPTION

[0035] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0036] See also Figure 1 to Figure 2 The present invention provides a technical solution: a millimeter wave radar compensation system based on automobile intelligent driving, including an environment detection module, an interference source monitoring module, a radar compensation module, a radar acquisition module and a result output module;

[0037] The environment detection module is used to detect various environmental interference data near the vehicle that affect the millimeter wave radar detection;

[0038] The interference source monitoring module is used to monitor the interference intensity data and interference factor information exceeding the specified threshold;

[0039] The radar compensation module is used to query the compensation time per unit time according to the interference factor of the specified interference intensity;

[0040] The radar acquisition module is used to collect the total time data from the detection to the return of the millimeter wave radar;

[0041] The result output module is used to measure the actual time according to the collected return time data and the compensation time data per unit time, and to measure the detection distance according to the propagation speed of the millimeter wave radar per unit time.

[0042] It should be noted that in the process of performing millimeter-wave radar detection using the millimeter-wave radar compensation system based on automobile intelligent driving of the present invention, the interference factors that affect millimeter-wave radar detection near the vehicle, such as water vapor, oxygen molecules, etc., are detected through the environmental detection module. When the concentration of water vapor and oxygen molecules reaches a specified threshold, the interference factor and interference intensity information are automatically captured through the interference source monitoring module, and the unit time compensation time information of the interference factor under the detected interference intensity (water vapor concentration, oxygen molecule concentration) is found through the radar compensation module. In the process of performing millimeter-wave radar detection on the car, the round-trip time information in the radar detection process is collected through the radar acquisition module, and the total compensation time of the round-trip time is multiplied according to the compensation time information per unit time, and the total distance in the round-trip process is calculated according to the propagation speed per unit time of the millimeter-wave radar, and the detection distance of the millimeter-wave radar after time compensation is obtained by halving.

[0043] A further implementation is that the interference source monitoring module includes an interference intensity monitoring module and an interference factor extraction module;

[0044] The interference intensity monitoring module is used to monitor interference intensity data exceeding a specified threshold;

[0045] The interference factor extraction module is used to extract the interference factor information exceeding the specified threshold; in the process of interference source monitoring, by monitoring the interference intensity of each interference factor exceeding the specified set threshold, the compensation time of the interference factor can be queried.

[0046] In a further embodiment, the radar compensation module includes a compensation data storage module and a compensation time query module;

[0047] The compensation data storage module is used to store compensation time data per unit time under various interference factors and interference intensity conditions;

[0048] The compensation time query module is used to query the unit time compensation time data of a specified interference factor under a specified interference intensity; during the radar compensation process, the unit time compensation time database is queried according to the interference factor and the interference intensity, and then the unit time compensation time information under each interference intensity is found.

[0049] In a further embodiment, the radar acquisition module includes a radar detection module and a return time extraction module;

[0050] The radar detection module is used to be installed in the front and rear of the vehicle to perform millimeter wave radar detection;

[0051] The return time extraction module is used to extract the return time information of the millimeter wave radar detection; during the radar acquisition process, the radar detects the object to be detected, and when the radar receives the return signal, the detection return time information is extracted.

[0052] In a further embodiment, the result output module includes an actual time measurement module and a detection distance output module;

[0053] The actual time calculation module is used to calculate the actual return time according to the return time detected by the millimeter wave radar and the compensation time per unit time;

[0054] The detection distance output module is used to measure the detection distance according to the propagation speed per unit time of the millimeter wave radar and the actual return time; in the process of outputting the results, the total compensation time can be calculated by obtaining the radar detection return time and the compensation time per unit time, and then the return time and the total compensation time are superimposed to obtain the actual time after compensation, and the detection distance is calculated based on the actual time.

[0055] See also Figure 3 A millimeter wave radar compensation method based on automobile intelligent driving, characterized in that it includes the following steps:

[0056] S1. Detect interference intensity data of environmental factors that affect millimeter wave radar propagation;

[0057] S2. When the interference intensity reaches a specified threshold, extract the interference factor information and query the unit time compensation time of the interference factor under the detected interference intensity;

[0058] S3, detecting round-trip time data through millimeter wave radar, and calculating the actual time according to the compensation time per unit time;

[0059] S4. Calculate and output the detection distance based on the actual time and the propagation speed of the millimeter wave radar per unit time.

[0060] In the process of time compensation for interference factors affecting radar propagation speed during millimeter-wave radar detection by using the millimeter-wave radar compensation method based on automobile intelligent driving of the present invention, the interference factors affecting radar propagation and reaching the specified interference intensity are detected, and the unit time compensation time of the interference factor under the intensity is queried, and the total time after compensation is determined according to the return time of radar detection, and the detection distance is calculated according to the total time data, so that the inaccurate detection distance caused by the interference factors of radar waves can be well prevented, thereby affecting the driver's judgment of the distance.

[0061] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0062] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A millimeter wave radar compensation system based on automobile intelligent driving, characterized in that: It includes environment detection module, interference source monitoring module, radar compensation module, radar acquisition module and result output module; The environment detection module is used to detect various environmental interference data near the vehicle that affect the millimeter wave radar detection; The interference source monitoring module is used to monitor the interference intensity data and interference factor information exceeding the specified threshold; The radar compensation module is used to query the compensation time per unit time according to the interference factor of the specified interference intensity; The radar acquisition module is used to collect the total time data from the detection to the return of the millimeter wave radar; The result output module is used to measure the actual time according to the collected return time data and the compensation time data per unit time, and to measure the detection distance according to the propagation speed per unit time of the millimeter wave radar; The interference source monitoring module includes an interference intensity monitoring module and an interference factor extraction module; The interference intensity monitoring module is used to monitor interference intensity data exceeding a specified threshold; The interference factor extraction module is used to extract interference factor information exceeding a specified threshold.

2. A millimeter wave radar compensation system based on automobile intelligent driving according to claim 1, characterized in that: The radar compensation module includes a compensation data storage module and a compensation time query module; The compensation data storage module is used to store compensation time data per unit time under various interference factors and interference intensity conditions; The compensation time query module is used to query the unit time compensation time data of a specified interference factor under a specified interference intensity.

3. The millimeter wave radar compensation system based on automobile intelligent driving according to claim 1 is characterized in that: The radar acquisition module includes a radar detection module and a return time extraction module; The radar detection module is used to be installed in the front and rear of the vehicle to perform millimeter wave radar detection; The return time extraction module is used to extract the return time information of millimeter wave radar detection.

4. The millimeter wave radar compensation system based on automobile intelligent driving according to claim 1 is characterized in that: The result output module includes an actual time measurement module and a detection distance output module; The actual time calculation module is used to calculate the actual return time according to the return time detected by the millimeter wave radar and the compensation time per unit time; The detection distance output module is used to measure the detection distance according to the propagation speed per unit time and the actual return time of the millimeter wave radar.

5. The millimeter wave radar compensation system based on automobile intelligent driving according to claim 1 is characterized in that: The steps include: S1. Detect interference intensity data of environmental factors that affect millimeter wave radar propagation; S2. When the interference intensity reaches a specified threshold, extract the interference factor information and query the unit time compensation time of the interference factor under the detected interference intensity; S3, detecting round-trip time data through millimeter wave radar, and calculating the actual time according to the compensation time per unit time; S4. Calculate and output the detection distance based on the actual time and the propagation speed of the millimeter wave radar per unit time.

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