CN113376640A - Ultrasonic ranging obstacle avoidance method and obstacle avoidance device - Google Patents
Ultrasonic ranging obstacle avoidance method and obstacle avoidance device Download PDFInfo
- Publication number
- CN113376640A CN113376640A CN202110707281.4A CN202110707281A CN113376640A CN 113376640 A CN113376640 A CN 113376640A CN 202110707281 A CN202110707281 A CN 202110707281A CN 113376640 A CN113376640 A CN 113376640A
- Authority
- CN
- China
- Prior art keywords
- ultrasonic
- obstacle
- signal
- obstacle avoidance
- ultrasonic ranging
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000013459 approach Methods 0.000 claims abstract description 21
- 230000009471 action Effects 0.000 claims abstract description 8
- 230000004888 barrier function Effects 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention discloses an ultrasonic ranging obstacle avoidance method, which comprises the following steps: the ultrasonic ranging device approaches a target obstacle and transmits a first ultrasonic signal to the target obstacle, and the first ultrasonic signal is reflected by the target obstacle to form a first reflected signal; receiving the first reflected signal; comparing the first reflection signal with a reference threshold corresponding to the current position; and if the first reflection signal exceeds the reference threshold, executing obstacle avoidance action, and if not, continuing to approach the obstacle. According to the method, the using environment is learned in advance, the ultrasonic reflection signals are compared with the reference threshold obtained after learning is completed, whether the obstacle exists or not is judged, and compared with the method for judging the obstacle through distance measurement, the method can eliminate other influence factors such as ultrasonic aftershock and motor interference waves, and therefore obstacle avoidance accuracy is improved.
Description
Technical Field
The invention relates to the technical field of ultrasonic ranging, in particular to an ultrasonic ranging obstacle avoidance method and an obstacle avoidance device.
Background
The ultrasonic waves have the characteristics of strong directivity and low energy consumption. Meanwhile, the ultrasonic waves are reflected when they encounter a target obstacle during propagation. Therefore, the existing technology usually utilizes ultrasonic waves to measure distance, thereby achieving the purpose of avoiding obstacles.
However, in practical application, due to the physical characteristics of the ultrasonic vibration sheet, the ultrasonic wave is generated and the aftershock is generated, so that the interference is generated on the ultrasonic wave reflected by the target to be detected, and meanwhile, in the application of distance measurement and obstacle avoidance by using some ultrasonic waves, the motor also generates interference waves when moving, so that the ultrasonic detection effect is influenced. Therefore, if it is determined whether or not an obstacle exists based on the detected distance, the above-described interference factor exists, and a determination error is likely to occur.
Disclosure of Invention
The invention mainly aims to provide an ultrasonic distance measurement obstacle avoidance method, and aims to solve the technical problem that detection and judgment are easily affected by interference signals in the ultrasonic distance measurement obstacle avoidance process.
In order to achieve the above object, the present invention provides an ultrasonic ranging obstacle avoidance method, which includes an ultrasonic ranging device, and includes the following steps:
the ultrasonic ranging device approaches a target obstacle and transmits a first ultrasonic signal to the target obstacle, and the first ultrasonic signal is reflected by the target obstacle to form a first reflected signal;
receiving the first reflected signal;
comparing the first reflection signal with a reference threshold corresponding to the current position;
judging whether the first reflection signal exceeds a reference threshold value;
and if so, executing obstacle avoidance action, and if not, continuing to approach the obstacle.
Further, the reference threshold includes a preset threshold and a recording threshold, and the recording threshold is obtained by measuring a usage environment.
Further, before the approaching to the target obstacle and the transmitting of the first ultrasonic signal to the target obstacle, the method further includes the following steps:
approaching a target obstacle, and simultaneously respectively transmitting a second ultrasonic signal to the target obstacle and receiving and reflecting the second ultrasonic signal to form a second reflected signal at different positions;
obtaining a reflection parameter range through configuration parameters based on the second reflection signal;
and recording the reflection parameter range and the corresponding position to obtain a recording threshold value.
Further, after the recording of the reflection parameter range and the corresponding position to obtain a recording threshold, the method further includes the following steps:
repeating a plurality of reciprocating movements at positions farthest from and closest to the target obstacle;
respectively transmitting a third ultrasonic signal to the target barrier at different positions and receiving and reflecting to form a third reflected signal;
comparing the third reflection signal with a recording threshold corresponding to the current position;
judging whether the third reflection signal exceeds a recording threshold value;
if so, the parameters are reconfigured, and if not, the recording threshold is maintained.
Further, the step of approaching the target obstacle includes:
the ultrasonic ranging device is driven by the driving unit to approach the target barrier.
Further, the position information of the current position is provided by a drive unit.
Furthermore, the driving unit adopts one of a Hall encoder motor, a photoelectric encoder motor and a stepping motor.
Further, the step of performing an obstacle avoidance action includes:
stopping approaching or departing from the target obstacle.
The invention also provides an obstacle avoidance device which is operated by adopting the method, and the obstacle avoidance device comprises:
the ultrasonic transmitting module is used for transmitting an ultrasonic signal to the target obstacle;
the ultrasonic receiving module is used for receiving the reflected signal;
the driving module is used for driving the ultrasonic transmitting module and the ultrasonic receiving module to approach a target obstacle;
a storage module for storing a reference threshold;
and the calculation module is used for judging whether the reflected signal exceeds a reference threshold value.
The invention also provides ultrasonic ranging obstacle avoidance equipment, which comprises a controller and a memory, wherein at least one instruction or at least one program is stored in the memory, and the at least one instruction or the at least one program is loaded and executed by the controller to realize the ultrasonic ranging obstacle avoidance method.
The technical scheme provides an ultrasonic ranging obstacle avoidance method, which comprises the following steps: approaching a target obstacle, and simultaneously transmitting a first ultrasonic signal to the target obstacle, wherein the first ultrasonic signal forms a first reflection signal after being reflected by the target obstacle; receiving the first reflected signal; comparing the first reflection signal with a reference threshold corresponding to the current position; and if the first reflection signal exceeds the reference threshold, executing obstacle avoidance action, and if not, continuing to approach the obstacle. According to the method, the using environment is learned in advance, the ultrasonic reflection signals are compared with the reference threshold obtained after learning is completed, whether the obstacle exists or not is judged, and compared with the method for judging the obstacle through distance measurement, the method can eliminate other influence factors such as ultrasonic aftershock and motor interference waves, and therefore obstacle avoidance accuracy is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic flow chart illustrating steps of an ultrasonic ranging obstacle avoidance method according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an obstacle avoidance apparatus according to the present invention;
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" and/or "appears throughout, the meaning includes three parallel schemes, for example," A and/or B "includes scheme A, or scheme B, or a scheme satisfying both schemes A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
In practical application, because the physical characteristics of ultrasonic wave trembler can be along with the production of aftershock when producing the ultrasonic wave, can disturb the ultrasonic wave that the target that awaits measuring reflects back, simultaneously, in some ultrasonic waves carry out the application of keeping away the barrier, also can produce the interference wave when because the motor removes to influence ultrasonic detection effect. Therefore, if it is determined whether or not an obstacle exists based on the detected distance, the above-described interference factor exists, and a determination error is likely to occur.
The invention mainly aims to provide an ultrasonic distance measurement obstacle avoidance method, and aims to solve the technical problem that detection and judgment are easily affected by interference signals in the ultrasonic distance measurement obstacle avoidance process.
Referring to fig. 1, in an embodiment of the ultrasonic distance measuring and obstacle avoiding method of the present invention, the method is applied to an obstacle avoiding device, and the obstacle avoiding device is provided with an ultrasonic distance measuring device and a driving unit. The ultrasonic ranging device adopts the prior art, and the method comprises the following steps:
s100: the ultrasonic ranging device approaches a target obstacle and transmits a first ultrasonic signal to the target obstacle, and the first ultrasonic signal is reflected by the target obstacle to form a first reflected signal;
s200: receiving the first reflected signal;
s300: comparing the first reflection signal with a reference threshold corresponding to the current position;
s400: judging whether the first reflection signal exceeds a reference threshold value;
s500: and if so, executing obstacle avoidance action, and if not, continuing to approach the obstacle.
Further, in the present embodiment, the reference threshold is set to be completed before step S100. The reference threshold value comprises a preset threshold value and a recording threshold value, the preset threshold value is artificially configured, and the recording threshold value is obtained by measuring the use environment.
Further, at step S100: the ultrasonic ranging device approaches a target obstacle and simultaneously emits a first ultrasonic signal to the target obstacle, and the step of measuring the use environment is further included before the first ultrasonic signal is reflected by the target obstacle to form a first reflected signal. The purpose of this step is to form and record a second reflection signal at a different position before the actual detection, where the second reflection signal includes a plurality of interference signals, and the second reflection signal can be used as a basis for determining whether there is an obstacle during the actual detection because the travel path of the ultrasonic ranging device during the actual detection is the same as the travel path during the measurement of the use environment.
The method specifically comprises the following steps:
s10: approaching a target obstacle, and simultaneously respectively transmitting a second ultrasonic signal to the target obstacle and receiving and reflecting the second ultrasonic signal to form a second reflected signal at different positions;
s20: obtaining a reflection parameter range through configuration parameters based on the second reflection signal;
s30: and recording the reflection parameter range and the corresponding position to obtain a recording threshold value.
It should be noted that the second reflected signal may be an ultrasonic reflected signal without interference factors, but may also be a second reflected signal formed by interference factors including ultrasonic aftershocks and motor interference waves.
It will be appreciated that the second reflected signal is a set of multiple values, since it is generated at different locations respectively. In one embodiment, the measurement use environment is first taken: the ultrasonic ranging device starts to approach the target obstacle from the position farthest away from the target obstacle, and simultaneously transmits a second ultrasonic signal to the target obstacle and receives a second reflected signal formed by reflection at different positions. When the movement position of the ultrasonic ranging device is 300, the second reflection signal received at the position is 50db, the configuration parameter is +/-3, and the range of the reflection parameter obtained based on the second reflection signal is 47-53 db; similarly, at other locations, different or the same range of reflection parameters may be obtained. When a plurality of reflection parameter ranges are collected, the reflection parameter ranges and corresponding position information are recorded, and then a plurality of recording threshold values are formed, namely, the measuring use environment is completed.
When the ultrasonic ranging device carries out actual detection, the ultrasonic ranging device operates to the motion position of 300, the received first reflection signal is 55db, the value is compared with the reflection parameter range (47-53db) corresponding to the current position (300), the first reflection signal is judged to exceed the reflection parameter range, and obstacle avoidance action is carried out.
In summary, in the using process of the ultrasonic ranging device, because the using environment changes, the interference factors faced by the ultrasonic ranging device include not only the ultrasonic aftershock and the motor interference waves, but also factors causing inaccurate reception due to the change of the angle of the transmitted ultrasonic signal when the ultrasonic ranging device moves. Therefore, after the service environment is changed, the step of learning and measuring the service environment is implemented, so that different recording threshold values can be generated, and then the step can be used as a judgment basis for detecting the obstacle in actual detection, thereby realizing real-time adjustment aiming at different service environments and achieving the optimal obstacle avoidance effect.
According to the method, the using environment is learned and measured in advance, the ultrasonic reflection signals are compared with the reference threshold value obtained after learning is completed, whether the obstacle exists or not is judged, and compared with the method for judging the obstacle through distance measurement, the method can eliminate other influence factors such as ultrasonic aftershock and motor interference waves, and therefore obstacle avoidance accuracy is improved.
Specifically, the preset threshold value can be manually configured by connecting the ultrasonic ranging device with a serial communication network. In this embodiment, the preset threshold is a group of multiple values, and the data form and the effect of the preset threshold are the same as the recording threshold obtained by learning the measurement using environment, which is not described herein again.
Further, in order to record the threshold more accurately and then improve the accuracy of judgment at the time of actual measurement, at said step S30: recording the reflection parameter range and the corresponding position, and after obtaining a recording threshold value, further comprising the following steps:
s40: repeating a plurality of reciprocating movements at positions farthest from and closest to the target obstacle;
s50: respectively transmitting a third ultrasonic signal to the target barrier at different positions and receiving and reflecting to form a third reflected signal;
s60: comparing the third reflection signal with a recording threshold corresponding to the current position;
s70: judging whether the third reflection signal exceeds a recording threshold value;
s80: if so, the parameters are reconfigured, and if not, the recording threshold is maintained.
Further, the step of approaching the target obstacle specifically includes: the ultrasonic ranging device is driven by the driving unit to approach the target barrier.
Specifically, in the present embodiment, the driving unit serves as a power source for driving the ultrasonic ranging device to approach or depart from the target obstacle.
Further, in this embodiment, the driving unit employs one of a hall encoder motor, a photoelectric encoder motor, and a stepping motor. In this embodiment, the driving unit employs a hall encoder motor.
Further, in the above distance measuring and obstacle avoiding method, the position information of the current position is provided by a driving unit.
Specifically, the hall encoder motor and the photoelectric encoder motor are execution devices capable of outputting motor rotating speed electric signals. The photoelectric encoder is a sensor which converts mechanical geometric displacement on an output shaft into pulse digital quantity through photoelectric conversion; the Hall encoder is a sensor which converts mechanical geometric displacement on an output shaft of a motor into pulse or digital quantity through magnetoelectric conversion; the stepping motor is an actuating device which is matched with a driver to convert a digital pulse signal into angular displacement. The motor obtains the rotating speed through the encoder or the driver, the moving distance of the ultrasonic ranging device can be obtained through the rotating speed, the operating time and the transmission ratio, and then the current position information of the ultrasonic ranging device is obtained.
Further, in step S500, the step of executing the obstacle avoidance operation includes:
stopping approaching or departing from the target obstacle.
Referring to fig. 2, the present invention further provides an obstacle avoidance device, which operates by using the above ultrasonic ranging obstacle avoidance method, and the obstacle avoidance device includes:
the ultrasonic transmitting module is used for transmitting an ultrasonic signal to the target obstacle;
the ultrasonic receiving module is used for receiving the reflected signal;
the driving module is used for driving the ultrasonic transmitting module and the ultrasonic receiving module to approach a target obstacle;
a storage module for storing a reference threshold;
and the calculation module is used for judging whether the reflected signal exceeds a reference threshold value. Since the obstacle avoidance device adopts all technical schemes of all embodiments of the ultrasonic ranging obstacle avoidance method, all beneficial effects brought by the technical schemes of the embodiments are at least achieved, and are not repeated herein.
The invention also provides ultrasonic ranging obstacle avoidance equipment which comprises a controller and a memory, wherein at least one instruction or at least one section of program is stored in the memory, and the at least one instruction or the at least one section of program is loaded and executed by the controller to realize the ultrasonic ranging obstacle avoidance method. Since the ultrasonic ranging obstacle avoidance device adopts all technical schemes of all embodiments of the ultrasonic ranging obstacle avoidance method, all beneficial effects brought by the technical schemes of the embodiments are at least achieved, and are not repeated herein.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An ultrasonic ranging obstacle avoidance method comprises an ultrasonic ranging device, and is characterized by comprising the following steps:
the ultrasonic ranging device approaches a target obstacle and transmits a first ultrasonic signal to the target obstacle, and the first ultrasonic signal is reflected by the target obstacle to form a first reflected signal;
receiving the first reflected signal;
comparing the first reflection signal with a reference threshold corresponding to the current position;
judging whether the first reflection signal exceeds a reference threshold value;
and if so, executing obstacle avoidance action, and if not, continuing to approach the obstacle.
2. The ultrasonic ranging obstacle avoidance method according to claim 1, wherein the reference threshold includes a preset threshold and a recording threshold, and the recording threshold is obtained by measuring a use environment.
3. The ultrasonic ranging obstacle avoidance method according to claim 2, wherein before the ultrasonic ranging device approaches a target obstacle and approaches the target obstacle and transmits the first ultrasonic signal to the target obstacle, the method further comprises the following steps:
the ultrasonic ranging device approaches to a target obstacle, and simultaneously transmits a second ultrasonic signal to the target obstacle and receives and reflects the second ultrasonic signal to form a second reflected signal at different positions;
obtaining a reflection parameter range through configuration parameters based on the second reflection signal;
and recording the reflection parameter range and the corresponding position to obtain a recording threshold value.
4. The ultrasonic ranging obstacle avoidance method according to claim 3, wherein after the recording of the reflection parameter range and the corresponding position to obtain a recording threshold, further comprising the steps of:
repeating a plurality of reciprocating movements at positions farthest from and closest to the target obstacle;
respectively transmitting a third ultrasonic signal to the target barrier at different positions and receiving and reflecting to form a third reflected signal;
comparing the third reflection signal with a recording threshold corresponding to the current position;
judging whether the third reflection signal exceeds a recording threshold value;
if so, the parameters are reconfigured, and if not, the recording threshold is maintained.
5. The ultrasonic ranging obstacle avoidance method according to claim 1, wherein the step of approaching to a target obstacle comprises:
the ultrasonic ranging device is driven by the driving unit to approach the target barrier.
6. The ultrasonic ranging obstacle avoidance method according to claim 5, wherein the position information of the current position is provided by a driving unit.
7. The ultrasonic ranging obstacle avoidance method according to claim 5, wherein the driving unit is one of a Hall encoder motor, a photoelectric encoder motor and a stepping motor.
8. The ultrasonic ranging obstacle avoidance method according to claim 1, wherein the step of performing an obstacle avoidance action comprises:
stopping approaching or departing from the target obstacle.
9. An obstacle avoidance device, operated by a method according to any of claims 1 to 8, wherein the obstacle avoidance device comprises:
the ultrasonic transmitting module is used for transmitting an ultrasonic signal to the target obstacle;
the ultrasonic receiving module is used for receiving the reflected signal;
the driving module is used for driving the ultrasonic transmitting module and the ultrasonic receiving module to approach a target obstacle;
a storage module for storing a reference threshold;
and the calculation module is used for judging whether the reflected signal exceeds a reference threshold value.
10. An ultrasonic ranging obstacle avoidance apparatus, characterized in that the apparatus comprises a controller and a memory, wherein at least one instruction or at least one program is stored in the memory, and the at least one instruction or the at least one program is loaded and executed by the controller to implement the ultrasonic ranging obstacle avoidance method according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110707281.4A CN113376640A (en) | 2021-06-24 | 2021-06-24 | Ultrasonic ranging obstacle avoidance method and obstacle avoidance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110707281.4A CN113376640A (en) | 2021-06-24 | 2021-06-24 | Ultrasonic ranging obstacle avoidance method and obstacle avoidance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113376640A true CN113376640A (en) | 2021-09-10 |
Family
ID=77578958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110707281.4A Pending CN113376640A (en) | 2021-06-24 | 2021-06-24 | Ultrasonic ranging obstacle avoidance method and obstacle avoidance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113376640A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952840A (en) * | 2022-05-26 | 2022-08-30 | 中国第一汽车股份有限公司 | Air pressure servo flexible gripping apparatus applying ultrasonic obstacle avoidance device and obstacle avoidance method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383518A (en) * | 2016-09-29 | 2017-02-08 | 国网重庆市电力公司电力科学研究院 | Multi-sensor tunnel robot obstacle avoidance control system and method |
| CN106950983A (en) * | 2017-02-21 | 2017-07-14 | 武汉星巡智能科技有限公司 | Unmanned vehicle barrier-avoiding method and device |
| CN108303697A (en) * | 2017-01-13 | 2018-07-20 | 杭州海康威视数字技术股份有限公司 | A kind of ultrasonic detection method of barrier, apparatus and system |
| CN110619764A (en) * | 2018-06-19 | 2019-12-27 | 上海汽车集团股份有限公司 | Method and device for detecting obstacle |
| WO2020259304A1 (en) * | 2019-06-24 | 2020-12-30 | Oppo广东移动通信有限公司 | Ultrasonic fingerprint recognition method and apparatus, storage medium and electronic device |
-
2021
- 2021-06-24 CN CN202110707281.4A patent/CN113376640A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383518A (en) * | 2016-09-29 | 2017-02-08 | 国网重庆市电力公司电力科学研究院 | Multi-sensor tunnel robot obstacle avoidance control system and method |
| CN108303697A (en) * | 2017-01-13 | 2018-07-20 | 杭州海康威视数字技术股份有限公司 | A kind of ultrasonic detection method of barrier, apparatus and system |
| CN106950983A (en) * | 2017-02-21 | 2017-07-14 | 武汉星巡智能科技有限公司 | Unmanned vehicle barrier-avoiding method and device |
| CN110619764A (en) * | 2018-06-19 | 2019-12-27 | 上海汽车集团股份有限公司 | Method and device for detecting obstacle |
| WO2020259304A1 (en) * | 2019-06-24 | 2020-12-30 | Oppo广东移动通信有限公司 | Ultrasonic fingerprint recognition method and apparatus, storage medium and electronic device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114952840A (en) * | 2022-05-26 | 2022-08-30 | 中国第一汽车股份有限公司 | Air pressure servo flexible gripping apparatus applying ultrasonic obstacle avoidance device and obstacle avoidance method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Kuc | Binaural sonar electronic travel aid provides vibrotactile cues for landmark, reflector motion and surface texture classification | |
| JP6354582B2 (en) | Signal processing apparatus, object detection apparatus, apparatus with object detection function, and object detection method | |
| CN100565241C (en) | Ultrasonic echo frontier inspection based on modulation domain measurement | |
| CN105510918A (en) | Actual measurement sound velocity-based ultrasonic distance measuring method and ultrasonic sensor | |
| WO2002012917A2 (en) | Sonar scanner | |
| CN205246175U (en) | High accuracy ultrasonic wave liquid level changer based on integration method actual measurement velocity of sound | |
| CN109901172A (en) | Ultrasonic ranging method, device and the electronic equipment adjusted based on frequency | |
| JP2015021737A (en) | Obstacle detection device | |
| CN113376640A (en) | Ultrasonic ranging obstacle avoidance method and obstacle avoidance device | |
| CN109901173A (en) | Ultrasonic ranging method, device and electronic equipment based on duty cycle adjustment | |
| WO2022238617A1 (en) | Vibration measurements of objects | |
| KR101408089B1 (en) | Device and method for measuring 3D position using multi-channel ultrasonic sensor | |
| CN105738905A (en) | Indoor positioning system and method for reducing blind areas | |
| JP2007333441A (en) | Movable body, and its environment recognition sensor | |
| CN209765051U (en) | Rotary scanning ultrasonic ranging device | |
| CN106443646B (en) | A kind of ultrasonic ranging system, echo processing techniques and device | |
| Kodagoda et al. | Obstacle detection and map building with a rotating ultrasonic range sensor using bayesian combination | |
| JP4337421B2 (en) | Position measuring method and position measuring system for moving object | |
| CN113376658A (en) | Unmanned aerial vehicle autonomous obstacle avoidance method and system based on single line laser radar | |
| CN113050099A (en) | Automatic parking obstacle distance detection method, system and detection device thereof | |
| CN111986494A (en) | Moving target speed measuring method, system, device and storage medium | |
| CN111220989A (en) | Obstacle detection method and apparatus | |
| JP7163425B2 (en) | Ultrasonic distance measuring device, ultrasonic distance measuring method and controller | |
| CN219397331U (en) | Position detection device, ultrasonic probe and ultrasonic imaging system | |
| Creuze | Distance and orientation measurement of a flat surface by a single underwater acoustic transducer |
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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240428 Address after: 523000 No. 12 Guanhuang North Road, Gaopu Town, Dongguan City, Guangdong Province Applicant after: Dongguan Huikang Transmission Technology Co.,Ltd. Country or region after: China Address before: 518105 factory building of Huikang Motor Manufacturing Co., Ltd., the third industrial zone, Yanshan Avenue, Yanchuan community, Yanluo street, Bao'an District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN GOODHEALTH MOTOR MANU Co.,Ltd. Country or region before: China |