CN111220990A - Obstacle detection method, parameter configuration method and equipment of ultrasonic sensor - Google Patents
Obstacle detection method, parameter configuration method and equipment of ultrasonic sensor Download PDFInfo
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- CN111220990A CN111220990A CN202010055407.XA CN202010055407A CN111220990A CN 111220990 A CN111220990 A CN 111220990A CN 202010055407 A CN202010055407 A CN 202010055407A CN 111220990 A CN111220990 A CN 111220990A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/539—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
Abstract
The invention provides an obstacle detection method, a parameter configuration method of an ultrasonic sensor and equipment. The parameter configuration method of the ultrasonic sensor comprises the following steps: acquiring detection data of an ultrasonic sensor which is mounted on a vehicle and is tested; constructing a parameter configuration model according to the detection data; the parameter configuration model maps parameters required to be configured by the ultrasonic sensors of various vehicle models; acquiring installation data of the ultrasonic sensor to be installed, inquiring target parameters required to be configured for the ultrasonic sensor to be installed from the parameter configuration model according to the installation data, and configuring the target parameters for the ultrasonic sensor to be installed. The invention realizes the centralized configuration of parameters for the ultrasonic sensors installed on vehicles of different models, thereby avoiding the need of configuring parameters for each vehicle one by one, enabling the parameter configuration to be more standardized and more platformized and improving the parameter configuration efficiency of the ultrasonic sensors.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to an obstacle detection method, a parameter configuration method of an ultrasonic sensor and equipment.
Background
Ultrasonic sensors are well known for use in many driver assistance applications to assist the driver in driving a vehicle. In such motor vehicle applications, the ultrasonic sensor determines the presence of an obstacle by transmitting ultrasonic waves and receiving echo signals, and determines its distance. Such as detecting whether there are obstacles in the area behind the vehicle that may not be detected by the driver when the vehicle is reversing.
However, since the ultrasonic sensors mounted on different vehicle models have different shapes, widths, or curvatures of the vehicle rear bars for each vehicle model, and parameters correspondingly arranged on the ultrasonic sensors are also different, it is necessary to arrange the parameters of the ultrasonic sensors on each vehicle one by one.
Disclosure of Invention
The invention aims to provide an obstacle detection method, a parameter configuration method of an ultrasonic sensor and equipment, and aims to solve the problems that parameters of the ultrasonic sensor on each vehicle need to be configured one by one, the operation is complex, and the efficiency is low.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a parameter configuration method of an ultrasonic sensor, which comprises the following steps:
acquiring detection data of an ultrasonic sensor which is mounted on a vehicle and is tested;
constructing a parameter configuration model according to the detection data; the parameter configuration model maps parameters required to be configured by the ultrasonic sensors of various vehicle models;
acquiring installation data of the ultrasonic sensor to be installed, inquiring target parameters required to be configured for the ultrasonic sensor to be installed from the parameter configuration model according to the installation data, and configuring the target parameters for the ultrasonic sensor to be installed.
In an embodiment, the step of querying, according to the installation data, a target parameter required to be configured by the ultrasonic sensor to be installed from the parameter configuration model includes:
and inquiring target parameters required to be configured by the ultrasonic sensor to be installed from the parameter configuration model according to the vehicle model and the installation position of the target vehicle.
In an embodiment, the step of querying target parameters required to be configured for the ultrasonic sensor to be installed from the parameter configuration model according to the installation data includes:
determining the emission waveform of the ultrasonic sensor to be installed according to the field angle of the ultrasonic sensor to be installed;
and inquiring target configuration parameters corresponding to the ultrasonic sensor to be installed in each detection interval from a parameter configuration model according to the transmitting waveform.
In one embodiment, the step of acquiring probe data of a tested ultrasonic sensor mounted on a vehicle includes:
driving an ultrasonic sensor which is arranged on a vehicle and is tested to detect the obstacles in each detection interval and receiving detection signals;
and generating detection data by using the detection signal and recording the detection data.
In one embodiment, the target parameters include a reception gain, a transmission sensitivity, an intensity, a threshold value, and a number of pulses of a detection signal of the ultrasonic sensor.
The obstacle detection method provided by the invention adopts the ultrasonic sensor configured by the parameter configuration method of the ultrasonic sensor, and comprises the following steps:
setting initial parameters of an ultrasonic sensor, driving the ultrasonic sensor to send ultrasonic signals according to the initial parameters, and receiving initial echo signals;
determining target parameters according to the initial echo signals, driving the ultrasonic sensor to send ultrasonic signals according to the target parameters, and receiving target echo signals;
and determining the target position information of the obstacle according to the target echo signal.
In one embodiment, the step of determining a target parameter from the initial echo signal comprises:
determining a target detection interval where the obstacle is located according to the initial echo signal;
and inquiring the target parameters corresponding to the target detection interval from the parameter configuration model.
In one embodiment, the step of determining a target detection interval in which the obstacle is located according to the initial echo signal includes:
determining initial position information of an obstacle according to the initial echo signal;
judging whether the barrier completely falls into an initial detection interval corresponding to the initial echo signal according to the initial position information;
if so, taking the initial detection interval as a target detection interval;
otherwise, adjusting the ultrasonic sensor to a debugging detection interval close to the initial position information, driving the ultrasonic sensor to send an ultrasonic signal by using parameters corresponding to the debugging detection interval, and taking the debugging detection interval as a target detection interval until the fact that the obstacle completely falls into the debugging detection interval is determined according to the received echo signal.
In one embodiment, the step of driving the ultrasonic sensor to transmit the ultrasonic signal with the target parameter includes:
adjusting signal receiving gain, transmitting pulse number or threshold value of the ultrasonic sensor;
and driving the ultrasonic sensor to send the ultrasonic signal again.
The invention provides a parameter configuration device of an ultrasonic sensor, which comprises: the ultrasonic sensor is electrically connected with the host control device, and the host control device is used for executing the parameter configuration method of the ultrasonic sensor.
Compared with the prior art, the scheme of the invention has the following advantages:
1. the parameter configuration method of the ultrasonic sensor provided by the invention comprises the steps of acquiring detection data of the ultrasonic sensor which is arranged on a vehicle and is tested; constructing a parameter configuration model according to the detection data; the parameter configuration model maps parameters required to be configured by the ultrasonic sensors of various vehicle models; the method comprises the steps of obtaining installation data of an ultrasonic sensor to be installed, inquiring target parameters required to be configured of the ultrasonic sensor to be installed from a parameter configuration model according to the installation data, configuring the target parameters for the ultrasonic sensor to be installed, constructing the parameter configuration model according to collected detection data, inquiring the target parameters required to be configured of the ultrasonic sensor to be installed by using the parameter configuration model, realizing centralized configuration of the parameters of the ultrasonic sensor installed on vehicles of different models, and further not needing to configure the parameters for each vehicle one by one, so that the parameter configuration is more standardized and more platform, and the parameter configuration efficiency of the ultrasonic sensor is improved.
2. According to the parameter configuration method of the ultrasonic sensor, the target parameters required to be configured for the ultrasonic sensor to be installed are inquired from the parameter configuration model according to the vehicle model and the installation position of the target vehicle, and accurate parameter configuration of the ultrasonic sensor on each vehicle is achieved.
3. The parameter configuration method of the ultrasonic sensor provided by the invention determines the emission waveform of the ultrasonic sensor to be installed according to the field angle of the ultrasonic sensor to be installed, inquires the target configuration parameters corresponding to each detection section of the ultrasonic sensor to be installed from the parameter configuration model according to the emission waveform, and detects the obstacle according to the target configuration parameters corresponding to the detection section when detecting the obstacle in the following process, thereby ensuring the effectiveness of the obstacle.
4. The invention provides a method for detecting an obstacle, which comprises the steps of setting initial parameters of an ultrasonic sensor, driving the ultrasonic sensor to send ultrasonic signals according to the initial parameters, and receiving initial echo signals; then determining target parameters according to the initial echo signals, driving the ultrasonic sensor to send ultrasonic signals according to the target parameters, and receiving target echo signals; and finally, determining the target position information of the obstacle according to the target echo signal, thereby realizing dynamic adjustment of target parameters, determining the position information of the obstacle, and improving the detection precision and the identification rate.
5. The invention provides a method for detecting an obstacle, which determines initial position information of the obstacle according to an initial echo signal; judging whether the barrier completely falls into an initial detection interval corresponding to the initial echo signal according to the initial position information; if so, taking the initial detection interval as a target detection interval; otherwise, the ultrasonic sensor is adjusted to a debugging detection interval close to the initial position information, the ultrasonic sensor is driven to send ultrasonic signals by using parameters corresponding to the debugging detection interval, and the debugging detection interval is used as a target detection interval until the obstacle is determined to completely fall into the debugging detection interval according to the received echo signals, so that the parameters of the ultrasonic sensor are dynamically adjusted, the detection interval gradually approaches to the specific position of the obstacle, and the detection precision and the recognition rate are further improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart illustrating a method of configuring parameters of an ultrasonic sensor according to an exemplary embodiment;
FIG. 2 is a flow chart illustrating a method of obstacle detection according to an exemplary embodiment;
FIG. 3 is a table illustrating a parameter configuration for an ultrasonic sensor according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
Fig. 1 is a flowchart illustrating a method for configuring parameters of an ultrasonic sensor according to an exemplary embodiment to solve the problems of tedious operation and low efficiency due to the need to configure parameters of the ultrasonic sensor on each vehicle one by one, where in an exemplary embodiment, the method for configuring parameters of an ultrasonic sensor may include:
s11, acquiring detection data of the ultrasonic sensor which is mounted on the vehicle and is tested;
the detection data acquired by the ultrasonic sensor in each obstacle detection process can be acquired, wherein the ultrasonic sensor is mounted on vehicles of various vehicle types, and corresponding parameters are configured in the ultrasonic sensor after the ultrasonic sensor is tested, namely according to the mounted vehicle type and the detection interval, so that the obstacles around the vehicle can be accurately detected. The detection data includes the shape of the obstacle, position information, and the like.
S12, constructing a parameter configuration model according to the detection data; the parameter configuration model maps parameters required to be configured by the ultrasonic sensors of various vehicle models;
the mathematical model is a mathematical structure which is expressed in a general way or an approximate way by adopting a mathematical language aiming at the characteristic or quantity dependency relationship of a certain object system, and the mathematical structure is a pure relationship structure of a certain system which is described by means of mathematical symbols.
In the step, parameters required to be configured by the ultrasonic sensor installed on the vehicle of each vehicle type can be recorded by constructing a mathematical model of a parameter configuration model, and the parameter configuration model is subsequently utilized to configure the parameters for the vehicles of various vehicle types, so that standardized and platformized parameter configuration is realized.
Specifically, a bumper 3D mathematical model corresponding to the vehicle model can be constructed, the installation position of the ultrasonic sensor on the bumper is determined, then the oscillogram of each ultrasonic sensor is determined according to the angle of view required by the ultrasonic sensor at the installation position, the parameters corresponding to each detection section are obtained by querying from the database of the ultrasonic sensor according to the angle of view required by the oscillogram, a parameter configuration model containing a configuration table is combined, and finally the configuration table is burned into a memory through a data line for subsequently configuring the parameters for the ultrasonic sensors installed on the vehicles of various vehicle models.
S13, obtaining installation data of the ultrasonic sensor to be installed, inquiring target parameters required to be configured for the ultrasonic sensor to be installed from the parameter configuration model according to the installation data, and configuring the target parameters for the ultrasonic sensor to be installed.
The step realizes the dynamic parameter configuration of the ultrasonic sensor to be installed, namely, different target parameters are set for the ultrasonic sensors at different installation positions, and accurate detection is realized. In one embodiment, the installation data may include a vehicle model of a target vehicle corresponding to the ultrasonic sensor to be installed and an installation position of the ultrasonic sensor to be installed on the target vehicle, and when configuring parameters for the ultrasonic sensor of the target vehicle, according to the vehicle model of the target vehicle and the installation position of the ultrasonic sensor to be installed on the target vehicle, target parameters matched with the vehicle model and the installation position may be queried from the parameter configuration model, and the target parameters may be configured for the ultrasonic sensor to be installed, so as to construct a parameter configuration model according to the acquired detection data, query the target parameters required to be configured for the ultrasonic sensor to be installed by using the parameter configuration model, implement centralized configuration of parameters for the ultrasonic sensors installed on vehicles of different models, so that there is no need to configure parameters for each vehicle one by one, the parameter configuration is more standardized and platformized, and the parameter configuration efficiency of the ultrasonic sensor is improved.
The target parameters comprise receiving gain, transmitting sensitivity, strength, threshold value and pulse number of detection signals of the ultrasonic sensor.
In an embodiment, the step of querying, according to the installation data, a target parameter required to be configured by the ultrasonic sensor to be installed from the parameter configuration model may specifically include:
determining the emission waveform of the ultrasonic sensor to be installed according to the field angle of the ultrasonic sensor to be installed;
and inquiring target configuration parameters corresponding to the ultrasonic sensor to be installed in each detection interval from a parameter configuration model according to the transmitting waveform.
In this embodiment, the installation data may also be a field angle of the ultrasonic sensor to be installed, the emission waveform of the ultrasonic sensor to be installed is determined according to the field angle required for installing the ultrasonic sensor to the target vehicle, and the target configuration parameters corresponding to the ultrasonic sensor to be installed in each detection zone are queried from the parameter configuration model according to the emission waveform. For example, when the detection interval is 20-30cm and corresponds to the parameter 1, the parameter 1 is configured to the ultrasonic sensor to be installed.
In an embodiment, the step of acquiring the detection data of the ultrasonic sensor mounted on the vehicle after the test may specifically include:
driving an ultrasonic sensor which is arranged on a vehicle and is tested to detect the obstacles in each detection interval and receiving detection signals;
and generating detection data by using the detection signal and recording the detection data.
In this embodiment, a parameter configuration model may be constructed, signals of obstacles in each area detected by each ultrasonic sensor are recorded to acquire a large number of detection signals, and then the detection signals are analyzed to determine detection sections of the ultrasonic sensor at each distance under different parameters, and a configuration table of parameters corresponding to each detection section of the ultrasonic sensor is generated and recorded.
The invention also provides an obstacle detection method, and the ultrasonic sensor configured by the parameter configuration method of the ultrasonic sensor is adopted. It should be noted that an execution subject of the obstacle detection method provided by the embodiment of the present invention may be a processor, such as a microprocessor, a Central Processing Unit (CPU), and the like, and the obstacle detection method provided by the embodiment of the present invention may be implemented by software. It should be emphasized that the main executing body of the ultrasonic detection method for the obstacle according to the embodiment of the present invention is not limited to the above processor, but may be a controller, an industrial personal computer, a server, and the like having data processing capability, and the obstacle detection method provided by the embodiment of the present invention is implemented not only by software, but also by a hardware circuit or a logic circuit.
It should be emphasized that the ultrasonic signals transmitted by the ultrasonic sensors correspond to the echo signals of the ultrasonic signals one by one, and the ultrasonic sensors are driven to transmit the corresponding ultrasonic signals when the triggering instruction occurs.
After the parameter configuration of the existing ultrasonic sensor is finished, the parameters cannot be changed, and because different parameters have different ultrasonic waveforms, the detection precision of the obstacle is further influenced, the dynamic parameter configuration of the ultrasonic sensor is realized, so that the parameters of the ultrasonic sensor are changed in the process of detecting the obstacle, the obstacle is detected for multiple times, and the obstacle detection precision is improved. As shown in fig. 2, in an embodiment, the obstacle detection method of the present invention includes the steps of:
s21, setting initial parameters of the ultrasonic sensor, driving the ultrasonic sensor to send ultrasonic signals according to the initial parameters, and receiving initial echo signals;
it should be noted that, after the ultrasonic sensor transmits the ultrasonic signal, when the ultrasonic signal hits an obstacle, an echo signal is generated and reflected back to the ultrasonic sensor, and the distance to the obstacle can be determined by the time difference between the transmission and the reception of the ultrasonic sensor and the propagation speed of the ultrasonic wave.
In this step, an initial parameter may be set for the ultrasonic sensor mounted in a vehicle having a different vehicle signal according to a basic detection request of the ultrasonic sensor, and when an obstacle is detected, the ultrasonic sensor may be driven by the initial parameter to transmit an ultrasonic signal and receive an initial echo signal. And the ultrasonic signal is transmitted according to the transmitting waveform corresponding to the initial parameter.
S22, determining target parameters according to the initial echo signals, driving the ultrasonic sensor to send ultrasonic signals according to the target parameters, and receiving target echo signals;
the method comprises the steps of denoising an echo signal according to the received echo signal, analyzing the echo signal, judging a detection interval where an obstacle is located, inquiring parameters corresponding to the detection interval to determine target parameters, driving the ultrasonic sensor to send the ultrasonic signal again according to the target parameters, and receiving the target echo signal.
And S23, determining the target position information of the obstacle according to the target echo signal.
And calculating the target position information of the barrier according to the target echo signal correspondingly received by the target parameter. The switched parameters can be changed with a detection width of 10cm relative to the original parameters, the approximate position of the obstacle can be confirmed through multiple measurements, namely, the parameters switched to the corresponding detection interval are detected again at the moment, and the effectiveness of the obstacle is ensured through multiple confirmation.
Specifically, the invention can initialize the distance for broadcasting and detecting the obstacle, for example, firstly transmit ultrasonic waves with a certain fixed waveform, judge whether the obstacle exists, then transmit ultrasonic waves for the second time with a waveform different from the fixed waveform aiming at the position of the obstacle, and detect the obstacle again with the waveform corresponding to the changed parameters because the parameters aiming at different positions can be dynamically changed, such as the transmission frequency, the amplification degree and the like are different, thereby reducing attenuation, further determining the position information of the obstacle, improving the detection precision and the recognition rate of the obstacle and ensuring the effectiveness of the detected obstacle.
As shown in fig. 3, according to the detection data collected by us, we can select different parameters for 13 detection intervals to control the detection width of the interval. For example, for an obstacle in a detection interval of 20-30cm, the target parameters of 4 emission pulse numbers, the enhanced gain direction and the threshold curve of curve 1 can be selected to detect the obstacle again so as to ensure the effectiveness of the detected obstacle. Further, assuming that the horizontal angle of the ultrasonic sensor of a certain vehicle is larger than that of the conventional installation, if the conventional parameters are used, the detection width is widened, and at this time, the corresponding parameters can be selected to control the detection width of each detection interval, so that the actual detection range conforms to the design requirement.
In one embodiment, the step of driving the ultrasonic sensor to transmit the ultrasonic signal with the target parameter includes:
adjusting signal receiving gain, transmitting pulse number or threshold value of the ultrasonic sensor;
and driving the ultrasonic sensor to send the ultrasonic signal again.
Specifically, four ultrasonic sensors may be configured on the target vehicle, before the detection, whether the parameters configured by each ultrasonic sensor are matched with the current detection mode is detected, and if so, the four ultrasonic sensors transmit and receive in turn according to the time sequence and configure corresponding parameters to the corresponding ultrasonic sensors according to the last detection result, so as to confirm the validity of the obstacle and control the angle of view of the ultrasonic sensors in the detection zone where the obstacle is located. And when the detected parameters of the configuration of each ultrasonic sensor are not matched with the current detection mode, updating the parameters of the configuration required by the configuration of each ultrasonic sensor until the parameters are matched.
In an embodiment, the step of determining the target parameter according to the initial echo signal may specifically include:
determining a target detection interval where the obstacle is located according to the initial echo signal;
and inquiring the target parameters corresponding to the target detection interval from the parameter configuration model.
In this embodiment, a target detection interval where an obstacle is located may be determined according to an initial echo signal, and specifically, initial position information of the obstacle may be determined according to the initial echo signal; and then judging whether the barrier completely falls into an initial detection interval corresponding to the initial echo signal according to the initial position information, if so, taking the initial detection interval as a target detection interval, namely, the barrier can be stably detected without departing from the detection interval, so that the original parameters do not need to be changed, and the original parameters are continuously detected to confirm the effectiveness of the barrier.
When the obstacle does not completely fall into the initial detection interval corresponding to the initial echo signal, the ultrasonic sensor is adjusted to be close to the debugging detection interval of the initial position information, the ultrasonic sensor is driven to send the ultrasonic signal by the parameter corresponding to the debugging detection interval, the echo signal is received, and the debugging detection interval corresponding to the echo signal is used as a target detection interval and the target parameter is determined until the obstacle is determined to completely fall into the debugging detection interval according to the received echo signal.
The invention also provides a parameter configuration device of the ultrasonic sensor, which comprises: the ultrasonic sensor is electrically connected with the host control device, and the host control device is used for executing a parameter configuration method of the ultrasonic sensor.
In one embodiment, the present invention also provides a storage medium storing computer readable instructions, which when executed by one or more processors, cause the one or more processors to execute the above-mentioned parameter configuration method for the ultrasonic sensor. For example, the storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
In summary, the parameter configuration method for the ultrasonic sensor provided by the invention includes acquiring detection data of the ultrasonic sensor which is mounted on a vehicle and is tested; constructing a parameter configuration model according to the detection data; the parameter configuration model maps parameters required to be configured by the ultrasonic sensors of various vehicle models; the method comprises the steps of obtaining installation data of an ultrasonic sensor to be installed, inquiring target parameters required to be configured of the ultrasonic sensor to be installed from a parameter configuration model according to the installation data, configuring the target parameters for the ultrasonic sensor to be installed, constructing the parameter configuration model according to collected detection data, inquiring the target parameters required to be configured of the ultrasonic sensor to be installed by using the parameter configuration model, realizing centralized configuration of the parameters of the ultrasonic sensor installed on vehicles of different models, and further not needing to configure the parameters for each vehicle one by one, so that the parameter configuration is more standardized and more platform, and the parameter configuration efficiency of the ultrasonic sensor is improved.
It will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program, which may be stored in a storage medium and executed by a computer, and the processes of the embodiments of the methods may be included. The storage medium may be a non-volatile storage medium such as a magnetic disk, an optical disk, a Read-Only Memory (ROM), or a Random Access Memory (RAM). The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A parameter configuration method of an ultrasonic sensor is characterized by comprising the following steps:
acquiring detection data of an ultrasonic sensor which is mounted on a vehicle and is tested;
constructing a parameter configuration model according to the detection data; the parameter configuration model maps parameters required to be configured by the ultrasonic sensors of various vehicle models;
acquiring installation data of the ultrasonic sensor to be installed, inquiring target parameters required to be configured for the ultrasonic sensor to be installed from the parameter configuration model according to the installation data, and configuring the target parameters for the ultrasonic sensor to be installed.
2. The method for configuring parameters of an ultrasonic sensor according to claim 1, wherein the installation data includes a vehicle model and an installation position of a target vehicle corresponding to the ultrasonic sensor to be installed, and the step of querying the target parameters to be configured of the ultrasonic sensor to be installed from the parameter configuration model according to the installation data includes:
and inquiring target parameters required to be configured by the ultrasonic sensor to be installed from the parameter configuration model according to the vehicle model and the installation position of the target vehicle.
3. The method of claim 1, wherein the installation data includes a field angle of the ultrasonic sensor to be installed, and the step of querying the parameter configuration model for the target parameters of the ultrasonic sensor to be installed according to the installation data includes:
determining the emission waveform of the ultrasonic sensor to be installed according to the field angle of the ultrasonic sensor to be installed;
and inquiring target configuration parameters corresponding to the ultrasonic sensor to be installed in each detection interval from a parameter configuration model according to the transmitting waveform.
4. The method of claim 1, wherein the step of acquiring probe data of the ultrasonic sensor which is mounted on the vehicle and has been tested comprises:
driving an ultrasonic sensor which is arranged on a vehicle and is tested to detect the obstacles in each detection interval and receiving detection signals;
and generating detection data by using the detection signal and recording the detection data.
5. The method of claim 1, wherein the target parameters include a reception gain, a transmission sensitivity, an intensity, a threshold value, and a number of pulses of a probe signal of the ultrasonic sensor.
6. An obstacle detection method, characterized in that an ultrasonic sensor configured by the parameter configuration method of an ultrasonic sensor according to any one of claims 1 to 5 is used, comprising the steps of:
setting initial parameters of an ultrasonic sensor, driving the ultrasonic sensor to send ultrasonic signals according to the initial parameters, and receiving initial echo signals;
determining target parameters according to the initial echo signals, driving the ultrasonic sensor to send ultrasonic signals according to the target parameters, and receiving target echo signals;
and determining the target position information of the obstacle according to the target echo signal.
7. The obstacle detection method according to claim 6, wherein the step of determining a target parameter from the initial echo signal comprises:
determining a target detection interval where the obstacle is located according to the initial echo signal;
and inquiring the target parameters corresponding to the target detection interval from the parameter configuration model.
8. The obstacle detection method according to claim 7, wherein the step of determining a target detection interval in which the obstacle is located based on the initial echo signal includes:
determining initial position information of an obstacle according to the initial echo signal;
judging whether the barrier completely falls into an initial detection interval corresponding to the initial echo signal according to the initial position information;
if so, taking the initial detection interval as a target detection interval;
otherwise, adjusting the ultrasonic sensor to a debugging detection interval close to the initial position information, driving the ultrasonic sensor to send an ultrasonic signal by using parameters corresponding to the debugging detection interval, and taking the debugging detection interval as a target detection interval until the fact that the obstacle completely falls into the debugging detection interval is determined according to the received echo signal.
9. The obstacle detection method according to claim 6, wherein the step of driving the ultrasonic sensor to transmit the ultrasonic signal with the target parameter includes:
adjusting signal receiving gain, transmitting pulse number or threshold value of the ultrasonic sensor;
and driving the ultrasonic sensor to send the ultrasonic signal again.
10. A parameter configuration apparatus of an ultrasonic sensor, comprising: the ultrasonic sensor comprises a host control device and an ultrasonic sensor, wherein the ultrasonic sensor is electrically connected with the host control device, and the host control device is used for executing the parameter configuration method of the ultrasonic sensor as claimed in any one of claims 1 to 5.
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| CN113805161B (en) * | 2021-09-14 | 2024-05-03 | 广州文远知行科技有限公司 | Ultrasonic sensor calibration method, system, control equipment and storage medium |
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