CN113687362A - Anti-signal interference distance detection method and device - Google Patents
Anti-signal interference distance detection method and device Download PDFInfo
- Publication number
- CN113687362A CN113687362A CN202111251419.0A CN202111251419A CN113687362A CN 113687362 A CN113687362 A CN 113687362A CN 202111251419 A CN202111251419 A CN 202111251419A CN 113687362 A CN113687362 A CN 113687362A
- Authority
- CN
- China
- Prior art keywords
- signal
- sequence
- signal group
- preset
- rebound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
- G01S15/10—Systems for measuring distance only using transmission of interrupted, pulse-modulated waves
- G01S15/101—Particularities of the measurement of distance
-
- 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
-
- 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
- G01S7/523—Details of pulse systems
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention discloses a distance detection method and a device for resisting signal interference, wherein the method comprises the following steps: acquiring a pulse signal to be sent, and coding the pulse signal to be sent into a coded signal group according to a preset sequence; sending the coded signal group to a peripheral object by taking an automobile as a center, and acquiring a rebound signal group rebounded by the peripheral object after receiving the coded signal group; extracting a bounce sequence from the bounce ensemble; and when the rebound sequence is the same as the preset sequence, determining the distance between the automobile and the peripheral object based on the rebound signal group. The invention can encode the ultrasonic signal before sending the ultrasonic signal, distinguish the ultrasonic wave sent by the ultrasonic signal and the ultrasonic wave sent by the peripheral sensor by using the encoding, and carry out corresponding detection operation when determining the encoding of the received rebound echo signal so as to avoid the condition of detection error caused by abnormal noise reception and improve the accuracy of detection.
Description
Technical Field
The invention relates to the technical field of obstacles around an automobile, in particular to a distance detection method and device capable of resisting signal interference.
Background
With the increasing popularity of automobiles, more and more people have driven automobiles. In order to improve driving safety and reduce traffic accidents, automobile manufacturers add various sensors or radars to automobiles to perform various detections, so as to assist drivers in driving and reduce driving risks.
One of the commonly used sensors for assisting driving of an automobile is an ultrasonic radar, which operates by sending ultrasonic waves to the surroundings and identifying the distance between the automobile and the surrounding objects by using the reflected echoes, so as to perform an auxiliary reminding according to the detected distance. Its advantage lies in small, the installation of being convenient for, and detects the blind area and is little, can increase detection range, also can detect in all weather simultaneously to improve detection efficiency.
However, the currently used ultrasonic radar has the following technical problems: the automobile can run in different running environments, different objects can generate ultrasonic waves in the running process, ultrasonic waves generated by different objects are mistakenly identified as echo signals by the ultrasonic radar, the identification accuracy rate is reduced, meanwhile, the system can report errors, the driving of a user is affected, and the running risk is increased.
Disclosure of Invention
The invention provides a distance detection method and a distance detection device capable of resisting signal interference, wherein the method encodes an ultrasonic signal before the ultrasonic signal is sent, so that the distance detection operation can be carried out on the encoded signal only when a rebound echo signal is received, the condition of detection error is avoided, and the accuracy of distance detection is improved.
A first aspect of an embodiment of the present invention provides a method for detecting a distance that is resistant to signal interference, where the method includes:
acquiring a pulse signal to be sent, and coding the pulse signal to be sent into a coded signal group according to a preset sequence;
sending the coded signal group to a peripheral object by taking an automobile as a center, and acquiring a rebound signal group rebounded by the peripheral object after receiving the coded signal group;
extracting a bounce sequence from the bounce ensemble;
and when the rebound sequence is the same as the preset sequence, determining the distance between the automobile and the peripheral object based on the rebound signal group.
In a possible implementation manner of the first aspect, the encoding the pulse signal to be transmitted into an encoded signal group according to a preset sequence includes:
dividing the pulse signal to be transmitted into a plurality of frequency division signals by using a preset frequency divider, wherein the frequencies of the frequency division signals are the same or different from each other;
respectively encoding each frequency division signal into baseband code elements with preset sequences by adopting a preset FSK modulator to obtain a plurality of baseband code elements;
the several baseband symbols are combined to form an encoded signal group.
In a possible implementation manner of the first aspect, the extracting a bounce sequence from the bounce ensemble includes:
demodulating the rebound signal group to obtain a plurality of demodulation signals, wherein each demodulation signal corresponds to a frequency;
inputting each demodulation signal into a preset FSK modulator to obtain a plurality of decoding code elements;
and acquiring the decoding sequence of each decoding code element to obtain a rebound sequence.
In one possible implementation manner of the first aspect, the determining the distance between the automobile and the peripheral object based on the rebounding signal group includes:
acquiring the sending time and the receiving time of the demodulation signal;
and calculating the distance between the automobile and the peripheral object according to the emission time and the receiving time based on the TOF principle.
A second aspect of an embodiment of the present invention provides an anti-signal interference distance detection apparatus, including:
the encoding module is used for acquiring a pulse signal to be transmitted and encoding the pulse signal to be transmitted into an encoding signal group according to a preset sequence;
the transmitting and acquiring module is used for transmitting the coded signal group to a peripheral object by taking an automobile as a center and acquiring a rebound signal group rebounded by the peripheral object after receiving the coded signal group;
an extraction module, configured to extract a bounce sequence from the bounce signal group;
and the determining module is used for determining the distance between the automobile and the peripheral object based on the rebounding signal group when the rebounding sequence is the same as the preset sequence.
In a possible implementation manner of the second aspect, the encoding module is further configured to:
dividing the pulse signal to be transmitted into a plurality of frequency division signals by using a preset frequency divider, wherein the frequencies of the frequency division signals are the same or different from each other;
respectively encoding each frequency division signal into baseband code elements with preset sequences by adopting a preset FSK modulator to obtain a plurality of baseband code elements;
the several baseband symbols are combined to form an encoded signal group.
In a possible implementation manner of the second aspect, the extracting module is further configured to:
demodulating the rebound signal group to obtain a plurality of demodulation signals, wherein each demodulation signal corresponds to a frequency;
inputting each demodulation signal into a preset FSK modulator to obtain a plurality of decoding code elements;
and acquiring the decoding sequence of each decoding code element to obtain a rebound sequence.
In a possible implementation manner of the second aspect, the determining module is further configured to:
acquiring the sending time and the receiving time of the demodulation signal;
and calculating the distance between the automobile and the peripheral object according to the emission time and the receiving time based on the TOF principle.
A third aspect of an embodiment of the present invention provides an electronic device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor implements the signal interference immunity distance detection method as described above.
A fourth aspect of the embodiments of the present invention provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are configured to cause a computer to execute the distance detection method for resisting signal interference, as described above.
Compared with the prior art, the distance detection method and device for resisting signal interference provided by the embodiment of the invention have the beneficial effects that: the invention can encode the ultrasonic signal before sending the ultrasonic signal, distinguish the ultrasonic wave sent by the ultrasonic signal and the ultrasonic wave sent by the peripheral sensor by using the encoding, and carry out corresponding detection operation when determining the encoding of the received rebound echo signal so as to avoid the condition of detection error caused by abnormal noise reception and improve the accuracy of detection.
Drawings
Fig. 1 is a schematic flowchart of a method for detecting a distance with signal interference resistance according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of frequency coding according to an embodiment of the present invention;
FIG. 3 is a diagram of a baseband symbol provided by an embodiment of the present invention;
FIG. 4 is a flowchart illustrating an operation of a method for detecting a distance with signal interference immunity according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a distance detection apparatus for resisting signal interference according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The conventional ultrasonic radar has the following technical problems: the automobile can run in different running environments, different objects can generate ultrasonic waves in the running process, ultrasonic waves generated by different objects are mistakenly identified as echo signals by the ultrasonic radar, the identification accuracy rate is reduced, meanwhile, the system can report errors, the driving of a user is affected, and the running risk is increased.
In order to solve the above problem, the following specific embodiments will describe and explain a distance detection method against signal interference according to embodiments of the present invention.
Referring to fig. 1, a flowchart of a method for detecting a distance with signal interference resistance according to an embodiment of the present invention is shown.
In the embodiment, the method is suitable for an automobile provided with an ultrasonic sensor, and can detect the surrounding environment or objects of the automobile and detect the distance between the automobile and the surrounding objects so as to assist the driving of a user.
As an example, the method for detecting a distance resistant to signal interference may include:
and S11, acquiring the pulse signal to be transmitted, and encoding the pulse signal to be transmitted into an encoding signal group according to a preset sequence.
The pulse signal is an ultrasonic signal transmitted by the ultrasonic sensor. The ultrasonic signals are subjected to sequence editing, the ultrasonic signals can be distinguished from other signals, the condition that other interference signals are adopted during subsequent detection is avoided, and therefore distinguishing and anti-interference effects are achieved.
Referring to fig. 2, a schematic flow chart of frequency coding according to an embodiment of the present invention is shown.
Since the ultrasonic sensor may transmit pulse signals of a plurality of different frequencies to detect distances of different objects, in order to improve the processing efficiency of the multi-frequency signals, the step S11 may include the following sub-steps:
and a substep S111 of dividing the pulse signal to be transmitted into a plurality of frequency-divided signals by using a preset frequency divider, wherein frequencies of the plurality of frequency-divided signals are the same or different from each other.
Specifically, a pulse signal transmitted by the ultrasonic sensor, which may include a plurality of frequencies, may be acquired, and the pulse signal may be sent to a frequency divider, where the pulse signal is divided into a plurality of frequency-divided signals according to the frequency, where each frequency-divided signal corresponds to one frequency.
For example, the frequency is divided into 5 frequency-divided signals, each of which is 100kHz, 200kHz, 300kHz, 400kHz, and 500kHz, respectively.
And a substep S112, respectively encoding each frequency-divided signal into baseband symbols with a preset sequence by using a preset FSK modulator, so as to obtain a plurality of baseband symbols.
In practical operation, each frequency-divided signal may be input into the FSK modulator, each frequency-divided signal is modulated by the FSK modulator, and finally the FSK modulator may output a corresponding baseband symbol according to the frequency of the frequency-divided signal, thereby obtaining a plurality of baseband symbols.
Referring to fig. 3, a diagram of a baseband symbol according to an embodiment of the present invention is shown.
In an alternative embodiment, the modulated baseband symbols are as shown in FIG. 3. It should be noted that the modulated sequence may also be adjusted according to specific actual needs, and may also be 121212 or 676767, etc.
Substep S113 combines the plurality of baseband symbols to form a coded signal group.
Then, a plurality of baseband code elements can be spliced and combined, and the spliced baseband code elements are added into the pulse signals to form corresponding coding signal groups.
And S12, sending the coded signal group to a peripheral object by taking the automobile as a center, and acquiring a rebound signal group rebounded by the peripheral object after receiving the coded signal group.
The ultrasonic sensor may then be controlled to transmit the coded signal group to a surrounding object centered on the vehicle.
In actual practice, it may be sent at intervals.
After receiving the encoded signal group, the surrounding object can reflect the encoded signal group due to its own material property, thereby forming a bounce signal.
Since the encoded signal constellation comprises a plurality of signals of different frequencies, different frequencies may be used for detecting different objects. In practice, a plurality of different objects can bounce simultaneously after receiving signals of different frequencies, so that a bouncing signal group can be formed. And the ultrasonic sensor can receive a rebound signal group rebounded by a peripheral object.
And S13, extracting a bounce sequence from the bounce signal group.
After acquiring the bouncing signal group, in order to determine whether the bouncing signal group bounces the signal due to the coded signal group sent by the ultrasonic sensor, a bouncing sequence can be extracted from the bouncing signal group, and the bouncing sequence can be a combined sequence of a plurality of baseband symbols.
In one embodiment, since the sequence generated by the ultrasonic sensor is obtained through a series of operations, in order to extract the bounce sequence, the bounce sequence can be extracted according to the operation sequence of the coding sequence.
As an example, step S13 may include the following sub-steps:
and a substep S131, demodulating the rebounding signal group to obtain a plurality of demodulated signals, wherein each demodulated signal corresponds to a frequency.
Since the bouncing signal group also comprises a plurality of signals with different frequencies, in order to distinguish the signals with different frequencies to obtain the codes of the signals with different frequencies, the bouncing signal group can be input into a frequency divider, and the frequency divider can decompose the bouncing signal into a plurality of demodulation signals.
Wherein each divided mediation signal may also correspond to a frequency.
And a substep S132 of inputting each of the demodulated signals to a preset FSK modulator to obtain a plurality of decoded symbols.
Each demodulation signal may then be input into a respective FSK modulator, which may generate a corresponding decoded symbol according to the frequency of the demodulation signal.
The format of the decoded symbol is the same as that of the baseband symbol, and for example, if 232323 is used for the baseband symbol, the decoded symbol may be 232323.
In an alternative embodiment, the frequency divider and FSK modulator used for encoding may also be used for decoding.
And a substep S133 of obtaining a decoding sequence of each decoding symbol to obtain a rebound sequence.
In particular, the sequence of symbols is in particular a digital sequence of decoded symbols.
For example, if the decoded symbol is 232323, the decoded sequence corresponds to 232323.
And S14, when the rebound sequence is the same as the preset sequence, determining the distance between the automobile and the peripheral object based on the rebound signal group.
The decoded signal can be used to calculate the distance between the vehicle and the surrounding objects to determine the obstacles around the vehicle, thereby implementing the function of driving assistance.
To accurately calculate the distance, in one embodiment, step S14 may include the following sub-steps:
and a substep S141 of obtaining the sending time and the receiving time of the decoded signal.
Specifically, the time of transmission may be recorded when the encoded signal group is transmitted, and the time of reception may be recorded when the decoded signal is acquired.
And a substep S142, based on TOF principle, calculating the distance between the automobile and the peripheral object according to the emission time and the receiving time.
And calculating the distance between the automobile and the peripheral object according to the sending time and the receiving time by using an ultrasonic time of flight (TOF) calculation method, and if the distance is smaller than a preset value, carrying out distance warning prompt to remind a driver.
Referring to fig. 4, an operation flow diagram of a method for detecting a distance with signal interference resistance according to an embodiment of the present invention is shown.
In operation, the ultrasonic signal of the ultrasonic sensor can be encoded and demodulated to generate an encoded signal group with a baseband code element, then the encoded signal group is sent to the periphery, a rebound signal group of a peripheral object is simultaneously acquired, whether the rebound signal group has the same sequence with the baseband code element is judged, if not, the acquired rebound signal group is determined to be noise, if so, the acquired rebound signal group can be determined to be a rebound signal group corresponding to the original encoded signal group, and the corresponding detection can be carried out by utilizing the rebound signal group.
It should be noted that, in an alternative embodiment, the rebounding ensembles may also be used for various ultrasonic tests, such as object material test, object property test, or object thickness test, etc. The specific detection type can be adjusted according to actual needs.
In this embodiment, an embodiment of the present invention provides a method for detecting a distance with anti-signal interference, which has the following beneficial effects: the invention can encode the ultrasonic signal before sending the ultrasonic signal, distinguish the ultrasonic wave sent by the ultrasonic signal and the ultrasonic wave sent by the peripheral sensor by using the encoding, and carry out corresponding detection operation when determining the encoding of the received rebound echo signal so as to avoid the condition of detection error caused by abnormal noise reception and improve the accuracy of detection.
An embodiment of the present invention further provides a distance detection device for resisting signal interference, and referring to fig. 5, a schematic structural diagram of the distance detection device for resisting signal interference according to an embodiment of the present invention is shown.
As an example, the anti-signal interference distance detection apparatus may include:
the encoding module 501 is configured to acquire a pulse signal to be sent, and encode the pulse signal to be sent into an encoded signal group according to a preset sequence;
a sending and obtaining module 502, configured to send the encoded signal group to a peripheral object with an automobile as a center, and obtain a rebounded signal group rebounded by the peripheral object after receiving the encoded signal group;
an extracting module 503, configured to extract a bounce sequence from the bounce ensemble;
a determining module 504, configured to determine a distance between the vehicle and a peripheral object based on the bouncing signal group when the bouncing sequence is the same as the preset sequence.
Optionally, the encoding module is further configured to:
dividing the pulse signal to be transmitted into a plurality of frequency division signals by using a preset frequency divider, wherein the frequencies of the frequency division signals are the same or different from each other;
respectively encoding each frequency division signal into baseband code elements with preset sequences by adopting a preset FSK modulator to obtain a plurality of baseband code elements;
the several baseband symbols are combined to form an encoded signal group.
Optionally, the extracting module is further configured to:
demodulating the rebound signal group to obtain a plurality of demodulation signals, wherein each demodulation signal corresponds to a frequency;
inputting each demodulation signal into a preset FSK modulator to obtain a plurality of decoding code elements;
and acquiring the decoding sequence of each decoding code element to obtain a rebound sequence.
Optionally, the determining module is further configured to:
acquiring the sending time and the receiving time of the demodulation signal;
and calculating the distance between the automobile and the peripheral object according to the emission time and the receiving time based on the TOF principle.
Further, an embodiment of the present invention further provides an electronic device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method for distance detection against signal interference as described in the above embodiments when executing the program.
Further, an embodiment of the present invention also provides a computer-readable storage medium, where computer-executable instructions are stored, and the computer-executable instructions are configured to enable a computer to execute the distance detection method for resisting signal interference according to the embodiment.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A method for signal interference immunity distance detection, the method comprising:
acquiring a pulse signal to be sent, and coding the pulse signal to be sent into a coded signal group according to a preset sequence;
sending the coded signal group to a peripheral object by taking an automobile as a center, and acquiring a rebound signal group rebounded by the peripheral object after receiving the coded signal group;
extracting a bounce sequence from the bounce ensemble;
and when the rebound sequence is the same as the preset sequence, determining the distance between the automobile and the peripheral object based on the rebound signal group.
2. The method according to claim 1, wherein the encoding the pulse signal to be transmitted into an encoded signal group according to a predetermined sequence comprises:
dividing the pulse signal to be transmitted into a plurality of frequency division signals by using a preset frequency divider, wherein the frequencies of the frequency division signals are the same or different from each other;
respectively encoding each frequency division signal into baseband code elements with preset sequences by adopting a preset FSK modulator to obtain a plurality of baseband code elements;
the several baseband symbols are combined to form an encoded signal group.
3. The method of claim 2, wherein the extracting a bounce sequence from the bounce signal group comprises:
demodulating the rebound signal group to obtain a plurality of demodulation signals, wherein each demodulation signal corresponds to a frequency;
inputting each demodulation signal into a preset FSK modulator to obtain a plurality of decoding code elements;
and acquiring the decoding sequence of each decoding code element to obtain a rebound sequence.
4. The signal-interference-resistant distance detection method according to claim 3, wherein the determining the distance between the automobile and the peripheral object based on the rebounding signal group comprises:
acquiring the sending time and the receiving time of the demodulation signal;
and calculating the distance between the automobile and the peripheral object according to the emission time and the receiving time based on the TOF principle.
5. A signal interference resistant distance detection apparatus, comprising:
the encoding module is used for acquiring a pulse signal to be transmitted and encoding the pulse signal to be transmitted into an encoding signal group according to a preset sequence;
the transmitting and acquiring module is used for transmitting the coded signal group to a peripheral object by taking an automobile as a center and acquiring a rebound signal group rebounded by the peripheral object after receiving the coded signal group;
an extraction module, configured to extract a bounce sequence from the bounce signal group;
and the determining module is used for determining the distance between the automobile and the peripheral object based on the rebounding signal group when the rebounding sequence is the same as the preset sequence.
6. The apparatus of claim 5, wherein the encoding module is further configured to:
dividing the pulse signal to be transmitted into a plurality of frequency division signals by using a preset frequency divider, wherein the frequencies of the frequency division signals are the same or different from each other;
respectively encoding each frequency division signal into baseband code elements with preset sequences by adopting a preset FSK modulator to obtain a plurality of baseband code elements;
the several baseband symbols are combined to form an encoded signal group.
7. The apparatus of claim 6, wherein the extracting module is further configured to:
demodulating the rebound signal group to obtain a plurality of demodulation signals, wherein each demodulation signal corresponds to a frequency;
inputting each demodulation signal into a preset FSK modulator to obtain a plurality of decoding code elements;
and acquiring the decoding sequence of each decoding code element to obtain a rebound sequence.
8. The signal-interference-resistant distance detection device according to claim 7, wherein the determining module is further configured to:
acquiring the sending time and the receiving time of the demodulation signal;
and calculating the distance between the automobile and the peripheral object according to the emission time and the receiving time based on the TOF principle.
9. An electronic device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed implements the method of distance detection against signal interference according to any of claims 1 to 4.
10. A computer-readable storage medium storing computer-executable instructions for causing a computer to perform the signal interference immunity distance detection method according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111251419.0A CN113687362B (en) | 2021-10-27 | 2021-10-27 | Anti-signal interference distance detection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111251419.0A CN113687362B (en) | 2021-10-27 | 2021-10-27 | Anti-signal interference distance detection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113687362A true CN113687362A (en) | 2021-11-23 |
| CN113687362B CN113687362B (en) | 2022-06-14 |
Family
ID=78588189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111251419.0A Active CN113687362B (en) | 2021-10-27 | 2021-10-27 | Anti-signal interference distance detection method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113687362B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888932A (en) * | 2006-07-17 | 2007-01-03 | 天津大学 | Chaos pulse sequence ultrasonic distance-measuring method and apparatus |
| CN102564533A (en) * | 2011-12-16 | 2012-07-11 | 西安电力高等专科学校 | Ultrasonic liquid level measuring method based on pseudo-code correlation technique |
| CN103592618A (en) * | 2012-08-14 | 2014-02-19 | 广州光点信息科技有限公司 | Ultrasonic positioning method and ultrasonic positioning system |
| DE102013008235A1 (en) * | 2013-05-08 | 2014-11-13 | Elmos Semiconductor Ag | Method for measuring a distance by means of ultrasound |
| CN104569986A (en) * | 2014-12-30 | 2015-04-29 | 复旦大学 | Concealed encoding ultrasonic reverse radar |
| CN104865574A (en) * | 2014-12-04 | 2015-08-26 | 四川虹视显示技术有限公司 | Fish finder |
| CN106054200A (en) * | 2016-06-24 | 2016-10-26 | 南京奇蛙智能科技有限公司 | Ultrasonic distance sensor capable of preventing sound interference and range finding method thereof |
| CN107015230A (en) * | 2017-03-15 | 2017-08-04 | 中国人民解放军63655部队 | A kind of ultrasonic ranging method |
| CN107533033A (en) * | 2015-05-07 | 2018-01-02 | 深圳市大疆创新科技有限公司 | System and method for detection object |
| CN108519601A (en) * | 2018-04-13 | 2018-09-11 | 深圳臻迪信息技术有限公司 | Distance measuring method, device and distance mearuring equipment |
| CN110058252A (en) * | 2019-04-26 | 2019-07-26 | 深圳市镭神智能***有限公司 | A kind of laser transmitting-receiving device and laser ranging system |
| CN111366933A (en) * | 2020-03-02 | 2020-07-03 | 浙江吉利汽车研究院有限公司 | Ultrasonic ranging method, device, equipment and medium |
| CN111505648A (en) * | 2020-04-25 | 2020-08-07 | 西安交通大学 | Space coding ultrasonic array ultrafast detection and positioning system and method |
| CN111624609A (en) * | 2020-06-05 | 2020-09-04 | 南京英锐创电子科技有限公司 | Ultrasonic ranging method and device |
| CN113433550A (en) * | 2021-04-28 | 2021-09-24 | 邓维川 | Ultrasonic detection method based on pulse amplitude coding and detector thereof |
-
2021
- 2021-10-27 CN CN202111251419.0A patent/CN113687362B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1888932A (en) * | 2006-07-17 | 2007-01-03 | 天津大学 | Chaos pulse sequence ultrasonic distance-measuring method and apparatus |
| CN102564533A (en) * | 2011-12-16 | 2012-07-11 | 西安电力高等专科学校 | Ultrasonic liquid level measuring method based on pseudo-code correlation technique |
| CN103592618A (en) * | 2012-08-14 | 2014-02-19 | 广州光点信息科技有限公司 | Ultrasonic positioning method and ultrasonic positioning system |
| DE102013008235A1 (en) * | 2013-05-08 | 2014-11-13 | Elmos Semiconductor Ag | Method for measuring a distance by means of ultrasound |
| CN104865574A (en) * | 2014-12-04 | 2015-08-26 | 四川虹视显示技术有限公司 | Fish finder |
| CN104569986A (en) * | 2014-12-30 | 2015-04-29 | 复旦大学 | Concealed encoding ultrasonic reverse radar |
| CN107533033A (en) * | 2015-05-07 | 2018-01-02 | 深圳市大疆创新科技有限公司 | System and method for detection object |
| CN106054200A (en) * | 2016-06-24 | 2016-10-26 | 南京奇蛙智能科技有限公司 | Ultrasonic distance sensor capable of preventing sound interference and range finding method thereof |
| CN107015230A (en) * | 2017-03-15 | 2017-08-04 | 中国人民解放军63655部队 | A kind of ultrasonic ranging method |
| CN108519601A (en) * | 2018-04-13 | 2018-09-11 | 深圳臻迪信息技术有限公司 | Distance measuring method, device and distance mearuring equipment |
| CN110058252A (en) * | 2019-04-26 | 2019-07-26 | 深圳市镭神智能***有限公司 | A kind of laser transmitting-receiving device and laser ranging system |
| CN111366933A (en) * | 2020-03-02 | 2020-07-03 | 浙江吉利汽车研究院有限公司 | Ultrasonic ranging method, device, equipment and medium |
| CN111505648A (en) * | 2020-04-25 | 2020-08-07 | 西安交通大学 | Space coding ultrasonic array ultrafast detection and positioning system and method |
| CN111624609A (en) * | 2020-06-05 | 2020-09-04 | 南京英锐创电子科技有限公司 | Ultrasonic ranging method and device |
| CN113433550A (en) * | 2021-04-28 | 2021-09-24 | 邓维川 | Ultrasonic detection method based on pulse amplitude coding and detector thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113687362B (en) | 2022-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106461772B (en) | Signal processing method in radar installations and radar installations | |
| KR101180797B1 (en) | System and method for intrusion sensing and alarm using ultralsonic wave | |
| CN106908794A (en) | Method and apparatus for detecting target object | |
| JP3100860B2 (en) | Communication device | |
| CN113687362B (en) | Anti-signal interference distance detection method and device | |
| US10551481B2 (en) | Radar sensor | |
| CN115792929A (en) | Obstacle detection method, system, storage medium and computing device | |
| US6633620B2 (en) | Data receiver capable of invalidating erroneous pulses | |
| US11960003B2 (en) | Control device for object detection device, object detection device, and non-transitory computer-readable storage medium | |
| CN113687363B (en) | Ultrasonic aftershock prevention distance detection method and device | |
| US10908253B2 (en) | Interference mitigation in automotive radar systems by artificial doppler modulation | |
| CN113985418A (en) | Same-frequency interference signal detection method and device based on ultrasonic radar and vehicle | |
| US20230408661A1 (en) | Method for determining soiling of a first ultrasonic sensor, computer program product, computer-readable storage medium, ultrasonic sensor apparatus, and assistance system | |
| US20100286898A1 (en) | Apparatus for supplying road conditions | |
| KR102302883B1 (en) | Apparatus and method for detecting obstruction in a near field for vehicle using ultrasonics wave | |
| US11789145B2 (en) | Method and apparatus for detecting at least partial flooding of a motor vehicle | |
| CN111024218B (en) | Ultrasonic wave correlation detection method based on automatic tracking | |
| US20200301009A1 (en) | Object detection apparatus | |
| CN108489938B (en) | Method for mist detection | |
| CN110967689B (en) | Method and device for determining height of target object and vehicle-mounted radar equipment | |
| CN110459074A (en) | Mine truck collision early warning system and method based on radar and WIFI | |
| CN110709728B (en) | Method and device for detecting at least one object in a region between a primary coil and a secondary coil of an inductive charging device | |
| KR102669381B1 (en) | Surveillance radar and method around construction equipment | |
| CN105954754A (en) | Anti-interference parking radar device | |
| CN117622177A (en) | Vehicle data processing method and device based on industrial large model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |