CN108919275A - It is a kind of for preventing the radar installations of vehicle backing pitfall - Google Patents
It is a kind of for preventing the radar installations of vehicle backing pitfall Download PDFInfo
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- CN108919275A CN108919275A CN201810463845.2A CN201810463845A CN108919275A CN 108919275 A CN108919275 A CN 108919275A CN 201810463845 A CN201810463845 A CN 201810463845A CN 108919275 A CN108919275 A CN 108919275A
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- ultrasonic sensor
- vehicle
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- radar device
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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
- G01S15/02—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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
- Traffic Control Systems (AREA)
Abstract
本发明提供了一种用于防止车辆倒车陷坑的雷达装置，以探测车尾底部垂直向下的深度信息，涉及车辆倒车的辅助装置领域，其包括：超声波传感器，其设于车尾的底部，用于放送或回收超声波；计时单元，用于接收超声波传感器发送的超声波，以得到超声波的传输间隔信号；控制器，用于向超声波传感器发送启动防止车辆倒车陷坑的信号，和\或将计时单元发送的传输间隔信号转换为超声波传感器与第一路面的投影距离L1，并计算出L1与超声波传感器和第二路面的投影距离L2的高度差H，以根据高度差H与预设的安全距离的比较结果向驾驶员发出示警信号。本发明解决现有技术中的倒车雷达无法探测车辆下方路况的盲区以致车辆后轮陷坑的问题。
The invention provides a radar device for preventing vehicle reversing pits to detect vertically downward depth information at the bottom of the rear of the vehicle, and relates to the field of auxiliary devices for reversing vehicles, which includes: an ultrasonic sensor, which is arranged at the bottom of the rear of the vehicle, It is used to broadcast or recover ultrasonic waves; the timing unit is used to receive the ultrasonic waves sent by the ultrasonic sensor to obtain the transmission interval signal of the ultrasonic waves; the controller is used to send a signal to the ultrasonic sensor to start preventing the vehicle from reversing into a pit, and/or set the timing unit The transmitted transmission interval signal is converted into the projected distance L1 between the ultrasonic sensor and the first road surface, and the height difference H between L1 and the projected distance L2 between the ultrasonic sensor and the second road surface is calculated, so as to calculate the difference between the height difference H and the preset safety distance. The result of the comparison sends a warning signal to the driver. The invention solves the problem that the reversing radar in the prior art cannot detect the blind area of the road condition under the vehicle so that the rear wheel of the vehicle sinks.
Description
Technical field
The present invention relates to a kind of auxiliary devices of vehicle backing, more particularly to a kind of for preventing vehicle backing pitfall
Radar installations.
Background technique
To most of driver, especially for new hand driver, reversing is one and needs experience and tempering " technical profession ", if controlled not
In place, accident just very likely occurs, this undoubtedly brings great danger to the life security of driver and conductor.Therefore, in vehicle
One reverse aid of upper installation is particularly important.
In the prior art, reversing radar, that is, reverse aid of vehicle is generally used carries out with the mode of vehicle level
Arrangement, in this way, reversing radar can only detect the barrier in vehicle dead astern, and cannot be to driving for the situation of rear of vehicle road
The person of sailing plays a warning role.For example, it moves backward in stranger section, especially when being moved backward at night, often can
Situations such as rear-wheel of generation vehicle falls down step or falls into irrigation canals and ditches；Especially in mountainous terrain, topography height difference is big, in reversing,
The accident for easily falling into cliff, moves backward in this case as a result, seriously jeopardizes the safety of driver and conductor's life.
Summary of the invention
It is a kind of for preventing the radar installations of vehicle backing pitfall it is an object of the present invention to provide, it is existing to solve
Reversing radar in technology can not detect the blind area of road conditions below vehicle, so that the problem of vehicle rear wheel pitfall.
Particularly, the present invention provides a kind of for preventing the radar installations of vehicle backing pitfall, to detect tailstock bottom
Depth information vertically downward comprising：
Ultrasonic sensor is set to the bottom of the tailstock, for broadcasting or recycling ultrasonic wave；
Timing unit is communicated to connect with the ultrasonic sensor, the institute sent for receiving the ultrasonic sensor
Ultrasonic wave is stated, to obtain the transmission intercal signal of the ultrasonic wave；
Controller communicates respectively with the ultrasonic sensor and the timing unit and is connected, and is used for the ultrasonic wave
Sensor, which sends starting, prevents the signal of vehicle backing pitfall, and or the transmission intercal signal that sends the timing unit turn
It is changed to the projector distance L1 on the ultrasonic sensor and the first road surface, and calculates the distance L1 and the supersonic sensing
The height difference H of device and the projector distance L2 on the second road surface, according to the comparison result of the height difference H and preset safe distance
Warning signal is issued to driver.
Further, the ultrasonic sensor and the projector distance L1 on the first road surface be greater than the ultrasonic sensor with
The projector distance L2 on the second road surface.
Further, the radar installations further includes unit of warning, and the unit of warning is with phonetic alarm and alarm
Display is connect with the controller respectively, for the comparison result according to the height difference H and the preset safe distance
Different warning signals is issued to driver.
Further, when the height difference H is less than the preset safe distance, the controller controls the voice
Alarm issues voice warning signal, to prompt driver to check the rear road conditions of the vehicle in time；
When the height difference H is greater than or equal to the preset safe distance, the controller controls the voice reporting
Alert device issues voice warning signal, and controls the attention display and show image warning signal, so that driver stops in time
Reversing.
Further, first road surface is the plane for having difference in height with plane locating for wheel；
Second road surface is the plane being overlapped with plane locating for wheel.
Further, the ultrasonic sensor includes generator and receiver, respectively with the output end of the controller
It is communicated to connect with input terminal,
Wherein, the generator is used to prevent the signal of vehicle backing pitfall from broadcasting according to controller transmission
Ultrasonic wave, and the echo-signal that the ultrasonic wave encounters road surface generation is sent to the receiver；
The echo-signal being recovered to is transmitted to the timing for recycling the echo-signal by the receiver
Unit.
Further, further include：
For starting and generating the pulse driver of pulse signal according to the preset program of the controller and for amplifying
The pulse amplifier of the pulse signal；
Wherein, the input terminal of the pulse driver and output end respectively with the output end of the controller and the pulse
The input terminal of amplifier communicates to connect, and the input terminal of the output end of the pulse amplifier and the generator communicates to connect.
Further, the radar installations further includes pulse reception amplifier, input terminal and output end respectively with it is described
The input terminal of the output end of receiver and timing unit communication connection, for amplifying the echo-signal.
Further, transmission intercal signal the connecing according to the pulse reception amplifier that the timing unit generates
The time for receiving and sending the echo-signal obtains.
Further, the vibration frequency of the ultrasonic sensor is 40kHZ.
Beneficial effects of the present invention can be：
Firstly, the present invention prevents vehicle backing according to the starting that controller is sent by the ultrasonic sensor of tailstock bottom
The signal of pitfall detects road condition information to broadcast ultrasonic wave, and receives the echo letter that the ultrasonic wave encounters road surface generation
Number and be transmitted to timing unit, which obtains the transmission intercal signal of ultrasonic wave according to the time sended and received, by
Transmission intercal signal is converted to the projector distance L1 on ultrasonic sensor and the first road surface by controller, and calculates L1 and ultrasound
The height difference H of wave sensor and the projector distance L2 on the second road surface.In this way, can by the height difference H and preset safety away from
From being compared, by comparing as a result, controller to driver send warning signal, after reminding driver to check vehicle in time
The pavement behavior of side directly controls driver and stops vehicle backing in time, so as to be effectively prevented from strange section or ground
The problem of rear-wheel pitfall easily occurs when the big section of gesture height difference is moved backward.
Secondly, controller can control phonetic alarm when the height difference H is less than but when close to preset safe distance
Voice warning signal is issued, to prompt driver to check the rear road conditions of the vehicle in time, to rise to vehicle rear wheel pitfall
To the effect prevented in advance.When the height difference H is not less than preset safe distance, at this time, on the one hand, controller controls language
Sound alarm issues voice warning signal, and on the other hand, control attention display shows the image for requiring driver to stop reversing
Warning signal, so that driver stops moving backward at once, to ensure the safety of reversing.
Furthermore when ultrasonic sensor and the projector distance L1 on the first road surface are greater than ultrasonic sensor and the second road surface
Projector distance L2 illustrates that there is pitfall section at vehicle rear, at this point, sending warning signal to driver by unit of warning can prevent
The unexpected situation of vehicle rear wheel pitfall occurs.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing：
Fig. 1 is the schematic structure of the radar installations according to an embodiment of the invention for preventing vehicle backing pitfall
Block diagram；
Fig. 2 is the diagrammatic view in principle of the measurement difference in height of the radar installations shown in FIG. 1 for preventing vehicle backing pitfall
Figure.
Specific embodiment
Reversing radar be a kind of safety aid when vehicle parking is perhaps moved backward its can be with sound or more straight
The case where driver's peripheral obstacle, is informed in the display of sight, when relieving driver's parking, reversing and starting vehicle all around
Caused puzzlement is visited, and driver is helped to clear away the defect of blind area and blurred vision.And existing reversing radar
The barrier that vehicle dead astern can only be detected cannot play a warning role the situation of rear of vehicle road to driver, from
And causes to be easy to happen rear-wheel in section strange or that topography height difference is big and fall down step or fall into the accidents such as irrigation canals and ditches.Use of the invention
In preventing the radar installations of vehicle backing pitfall, installing one in the tailstock can detect vertically downward on the basis of existing reversing radar
The ultrasonic sensor of depth, to detect rear of vehicle road conditions, when rear occurs more than the height difference of safe distance to driver
Alert messages are issued, thus the security of the lives and property of support vehicles and driver and passenger to the maximum extent.
Fig. 1 is the schematic structure of the radar installations according to an embodiment of the invention for preventing vehicle backing pitfall
Block diagram, the blind area of road conditions below vehicle can not be detected by solving reversing radar in the prior art, so that vehicle rear wheel pitfall is asked
Topic.The reverse gear of the vehicle is communicatively coupled with the controller 1, and after automobile gear level is linked into reverse gear, reverse gear will
The signal for being linked into reverse gear is sent to controller 1, and starts the radar installations for preventing vehicle backing pitfall by controller 1, to prevent
The only rear-wheel pitfall of vehicle, thus the life security of crisis driver and passenger.
By Fig. 1 and Fig. 2 it is found that the radar installations for preventing vehicle backing pitfall generally may include being set to vehicle
The ultrasonic sensor 3 of tail bottom, timing unit 2, controller 1, they are successively communicated to connect, wherein ultrasonic sensor 3
Output end is connected with the input terminal of timing unit 2, and the output end of timing unit 2 is connected with the input terminal of controller 1.In ultrasonic wave
It may include a pulse reception amplifier 7 between sensor 3 and timing unit 2.Wherein, ultrasonic sensor 3 can be broadcasted or be returned
Ultrasonic wave is received, pulse reception amplifier 7 receives the ultrasonic signal of ultrasonic sensor 3 and amplified, and timing unit 2 receives
The signal of the transmission of pulse reception amplifier 7 is simultaneously transmitted to controller 1.
The radar installations may also include pulse driver 5 and pulse amplifier 6, ultrasonic sensor 3, pulse driver
5, pulse amplifier 6 and controller 1 successively communicate to connect, the output end phase of the input terminal and controller 1 of pulse amplifier 6
Even, the input terminal of ultrasonic sensor 3 is connected with the output end of pulse driver 5.Wherein, pulse driver 5 can be according to control
The preset program of device 1 starts and generates pulse signal, and pulse amplifier 6 can be used for amplifying the pulse letter of the generation of pulse driver 5
Number.
When being linked into reverse gear, the signal that starting radar installations works is sent to controller 1, controller 1 is according to preparatory
To generate pulse signal, which transmits the program starting impulse driver 5 set after being amplified by pulse amplifier 6
To ultrasonic sensor 3.Ultrasonic sensor 3 generally can have a probe i.e. generator and a receiver, at this point, ultrasonic wave
For the generator detection road condition information of sensor 3 to broadcast ultrasonic wave, the receiver of ultrasonic sensor 3 recycles the ultrasound
Wave encounters the echo-signal of road surface generation, and timing list is transmitted to after echo-signal is amplified by pulse reception amplifier
Member 2, which obtains the transmission intercal signal of ultrasonic wave according to the time for sending and receiving pulse, and will be between the transmission
It is sent to controller 1 every signal, which is converted to generator and the first via according to preset program by controller 1
The projector distance L1 in face 11.And calculate the height difference H of the projector distance L2 on L1 and ultrasonic sensor 3 and the second road surface 12.
In this way, the height difference H can be compared with preset safe distance, by comparing as a result, controller to driver
Warning signal is sent, stops vehicle in time to remind driver to check the pavement behavior at vehicle rear in time or directly control driver
So as to be effectively prevented from rear-wheel pitfall easily occurs for reversing when the section big in strange section or topography height difference is moved backward
Problem.
Wherein, the ultrasonic sensor 3 and the projector distance L1 on the first road surface 11 be greater than the ultrasonic sensor 1 with
The projector distance L2 on the second road surface 12.Second road surface 12 is the plane being overlapped with plane locating for wheel, first road surface
11 is have the plane of difference in height with plane locating for wheel, and the range of the difference in height is greater than 15cm, i.e. the first road surface 11 is opposite
It is more than the plane of 15cm to lower recess in the second road surface 12.
In the embodiment of Fig. 1 and Fig. 2, the radar installations further includes unit 4 of warning, and the unit 4 of warning is with language
Sound alarm and attention display are connect with the controller 1 respectively, according to the height difference H and the preset safety
The comparison result of distance issues different warning signals to driver.It is specifically as follows：
When height difference H is less than the preset safe distance, the controller 1 can control the phonetic alarm hair
Voice warning signal out, so that driver be prompted to check the rear road conditions of the vehicle in time；
When height difference H is not less than the preset safe distance, the controller 1 can control the phonetic alarm
Voice warning signal is issued, meanwhile, control attention display shows image warning signal, stops falling to directly control driver
Vehicle, to avoid the generation of accident in time.
In further embodiments, the ultrasonic sensor 3 can also be little with the projector distance L1 on the first road surface 11
Rear impact collision obstacle occurs in the projector distance L2 of the ultrasonic sensor 1 and the second road surface, when at this point it is possible to prevent reversing
The situation of object.
In some embodiments, the vibration frequency of the ultrasonic sensor 3 can be 40kHZ, can be provided simultaneously with height
Sensitivity and the big feature of detection angle.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810463845.2A CN108919275A (en) | 2018-05-15 | 2018-05-15 | It is a kind of for preventing the radar installations of vehicle backing pitfall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810463845.2A CN108919275A (en) | 2018-05-15 | 2018-05-15 | It is a kind of for preventing the radar installations of vehicle backing pitfall |
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| Publication Number | Publication Date |
|---|---|
| CN108919275A true CN108919275A (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810463845.2A Pending CN108919275A (en) | 2018-05-15 | 2018-05-15 | It is a kind of for preventing the radar installations of vehicle backing pitfall |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113415279A (en) * | 2021-06-24 | 2021-09-21 | 东风汽车集团股份有限公司 | Vehicle reversing assisting method and system and vehicle |
| CN114690189A (en) * | 2022-04-07 | 2022-07-01 | 合众新能源汽车有限公司 | A method and system for identifying deep pits in the driving direction of a vehicle |
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| JP2005231468A (en) * | 2004-02-19 | 2005-09-02 | Nissan Motor Co Ltd | Obstruction detector in rear of vehicle |
| WO2012172580A1 (en) * | 2011-06-11 | 2012-12-20 | Engimec S.R.L. | Improvements in obstacle detection for vehicles |
| CN205992054U (en) * | 2016-08-09 | 2017-03-01 | 上海汽车集团股份有限公司 | A kind of off astern radar device monitoring tailstock step |
| CN206096446U (en) * | 2016-09-05 | 2017-04-12 | 罗伯特·博世有限公司 | Vehicle and obstacle detecting device thereof |
-
2018
- 2018-05-15 CN CN201810463845.2A patent/CN108919275A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005231468A (en) * | 2004-02-19 | 2005-09-02 | Nissan Motor Co Ltd | Obstruction detector in rear of vehicle |
| WO2012172580A1 (en) * | 2011-06-11 | 2012-12-20 | Engimec S.R.L. | Improvements in obstacle detection for vehicles |
| CN205992054U (en) * | 2016-08-09 | 2017-03-01 | 上海汽车集团股份有限公司 | A kind of off astern radar device monitoring tailstock step |
| CN206096446U (en) * | 2016-09-05 | 2017-04-12 | 罗伯特·博世有限公司 | Vehicle and obstacle detecting device thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113415279A (en) * | 2021-06-24 | 2021-09-21 | 东风汽车集团股份有限公司 | Vehicle reversing assisting method and system and vehicle |
| CN114690189A (en) * | 2022-04-07 | 2022-07-01 | 合众新能源汽车有限公司 | A method and system for identifying deep pits in the driving direction of a vehicle |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181130 |
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| RJ01 | Rejection of invention patent application after publication |