CN111218885A - Automatic spraying control system and method for traffic marking - Google Patents
Automatic spraying control system and method for traffic marking Download PDFInfo
- Publication number
- CN111218885A CN111218885A CN202010047599.XA CN202010047599A CN111218885A CN 111218885 A CN111218885 A CN 111218885A CN 202010047599 A CN202010047599 A CN 202010047599A CN 111218885 A CN111218885 A CN 111218885A
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- construction
- road
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- marking
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/16—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings
- E01C23/20—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ
- E01C23/22—Devices for marking-out, applying, or forming traffic or like markings on finished paving; Protecting fresh markings for forming markings in situ by spraying
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
Abstract
The invention relates to a traffic marking automatic spraying control system and a method, wherein the system comprises: the camera unit is used for acquiring the current construction road condition image information according to the current construction scheme; the control unit is used for carrying out image processing on the current construction road condition image information and planning out construction map information and initial construction position information by combining a current construction scheme; and the road marking machine is used for moving to the initial construction position according to the initial construction position information, advancing according to the construction map information, and simultaneously automatically spraying traffic markings by using the spray painting unit. According to the invention, as long as the constructor is equipped with the coating and inputs the current construction scheme, the spraying of the traffic marking can be automatically completed, the traffic safety risk of the constructor is reduced, the requirement on labor is reduced, the engineering cost is reduced, and meanwhile, the construction quality is ensured and the construction efficiency is high.
Description
Technical Field
The invention relates to the technical field of road construction equipment, in particular to an automatic spraying control system and method for traffic markings.
Background
The striping machine is a construction machine widely applied to roads, parking lots, squares and runways, can mark out regular marks such as different constraints, guidance and warning on a flat ground, plays a great role in city planning and highway construction due to the advantages of rapidness, high efficiency, accuracy and the like of the striping machine, and greatly saves the construction period and economic investment of road surface construction.
Application publication number is CN 110306418A's chinese patent discloses a road striping machine, including the device chassis, the left side fixed mounting of device chassis has the mounting bracket, T type groove has been seted up to the inside of mounting bracket, and the left side swing joint of mounting bracket has the handrail. This scheme is through establishing the most place ahead at striping machine with the instrument of cleaning, make the striping machine in-process that advances clean the instrument and can clear away the rubbish of treating the spraying position, the striping machine that has avoided the speed of artifical cleaning to lead to slowly moves forward, and the work efficiency is improved, the human cost is reduced, and utilized the aeration plate who sets up at the instrument of cleaning rear, the dust that makes the instrument of cleaning not clean obtains fully to clear away, thereby it is inseparable and lead to its life not long to have avoided road and coating laminating, under aeration plate and instrument's interact, construction quality is improved, the work efficiency is promoted, the labor cost is reduced, the rationality and the practicality of device are improved.
The above prior art solutions have the following drawbacks: this scheme still relies on the manpower to carry out and traveles, relies on the orbit and the shape of the route of traveling, manual control spraying action, manual control spraying road marking of operating personnel control road marking machine, mainly relies on constructor's proficiency, and the cost of labor is too high among the construction operation cost, and construction quality depends on people's factor simultaneously, is difficult for the assurance quality, and the efficiency of construction is low, and construction operation environment is poor, and constructor exists the risk that the personal traffic injury appears.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an automatic traffic marking spraying control system and an automatic traffic marking spraying control method, which reduce the requirement on labor and the engineering cost, ensure the construction quality and have high construction efficiency.
The above object of the present invention is achieved by the following technical solutions:
an automatic traffic marking spray control system comprising:
the camera unit is used for acquiring the current construction road condition image information according to the current construction scheme;
the control unit is used for carrying out image processing on the current construction road condition image information and planning out construction map information and initial construction position information by combining a current construction scheme; and
and the road marking machine is used for moving to the initial construction position according to the initial construction position information, advancing according to the construction map information, and simultaneously automatically spraying traffic markings by using the spray painting unit.
Through adopting above-mentioned technical scheme, constructor only need equip the coating to input current construction scheme, can accomplish the spraying of traffic marking automatically, reduce constructor's traffic safety risk, reduce artificial demand, reduce engineering cost, simultaneously, construction quality is guaranteed and the efficiency of construction is high.
The present invention in a preferred example may be further configured to: the construction system also comprises a wireless unit and a remote terminal, wherein the remote terminal sends the current construction scheme to the control unit through the wireless unit.
Through adopting above-mentioned technical scheme, utilize remote terminal to carry out remote control to road striping machine, further less manual work cost realizes automaticly, and when the construction road surface was comparatively complicated, when the initial construction position can't be confirmed to the control unit, road striping machine also can be moved to initial construction position by remote terminal control, remote terminal can also acquire the site operation picture that the unit of making a video recording shot, is convenient for monitor the site operation condition, can in time handle when proruption situation appears.
The present invention in a preferred example may be further configured to: the road block detection unit detects whether an obstacle exists on the current construction road surface, if so, the cleaning unit is started to clean the obstacle, and if not, the vehicle normally travels.
By adopting the technical scheme, when the road block detection unit detects that the current construction road surface has the obstacle, the cleaning unit is started to clean the obstacle, so that the labor cost is further reduced, and the working efficiency is improved.
The present invention in a preferred example may be further configured to: the coating stirring device further comprises a coating stirring unit, and the coating stirring unit is used for stirring the coating in the coating tank.
Through adopting above-mentioned technical scheme, utilize the coating stirring unit to carry out intensive mixing to the coating in the coating case, make the coating more even, and can prevent that the coating from condensing.
The present invention in a preferred example may be further configured to: the coating tank liquid level sensor is used for detecting the residual amount of the coating in the coating tank and sending out a coating shortage signal when the residual amount of the coating is lower than a preset value.
By adopting the technical scheme, the coating tank liquid level sensor is used for detecting the residual amount of the coating in the coating tank, and sending out a coating shortage signal when the residual amount of the coating is lower than a preset value, so that a constructor can recall a road marking machine or bring the coating to a construction site for adding when the residual amount of the coating is insufficient, and the construction progress can be controlled better.
The second aim of the invention is realized by the following technical scheme:
a traffic marking automatic spraying control method comprises the following steps: acquiring current construction road condition information according to a current construction scheme, wherein the current construction road condition information comprises current construction road condition image information, construction map information and initial construction position information; and the control unit controls the road striping machine to move to the initial construction position according to the initial construction position information, controls the road striping machine to advance according to the construction map information, and automatically sprays traffic markings by using the spray painting unit.
Through adopting above-mentioned technical scheme, constructor only need equip the coating to input current construction scheme, can accomplish the spraying of traffic marking automatically, reduce constructor's traffic safety risk, reduce artificial demand, reduce engineering cost, simultaneously, construction quality is guaranteed and the efficiency of construction is high.
The present invention in a preferred example may be further configured to: the construction scheme comprises a longitudinal marking construction scheme, a transverse marking construction scheme and other marking construction schemes.
By adopting the technical scheme, the longitudinal marked line refers to the marked line arranged along the driving direction of the road, the transverse marked line refers to the marked line arranged at an angle with the driving direction of the road, and other marked lines refer to character marks, reticular lines and central circles.
The present invention in a preferred example may be further configured to: the current construction scheme is sent to the control unit by a remote terminal.
Through adopting above-mentioned technical scheme, utilize remote terminal to carry out remote control to road striping machine, further less manual work cost realizes automaticly, and when the construction road surface was comparatively complicated, when the initial construction position can't be confirmed to the control unit, road striping machine also can be moved to initial construction position by remote terminal control, remote terminal can also acquire the site operation picture that the unit of making a video recording shot, is convenient for monitor the site operation condition, can in time handle when proruption situation appears.
The present invention in a preferred example may be further configured to: when the road marking machine advances according to the construction map information, the road block detection unit detects whether obstacles exist on the current construction road surface, if so, the cleaning unit is started to clean the obstacles, and if not, the road marking machine advances normally.
By adopting the technical scheme, when the road block detection unit detects that the current construction road surface has the obstacle, the cleaning unit is started to clean the obstacle, so that the labor cost is further reduced, and the working efficiency is improved.
The present invention in a preferred example may be further configured to: when the road striping machine automatically sprays traffic markings, the coating stirring unit is used for stirring the coating in the coating box.
Through adopting above-mentioned technical scheme, utilize the coating stirring unit to carry out intensive mixing to the coating in the coating case, make the coating more even, and can prevent that the coating from condensing.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the construction personnel only need to equip the coating and input the current construction scheme, and the spraying of the traffic marking can be automatically finished, so that the traffic safety risk of the construction personnel is reduced, the requirement on labor is reduced, the engineering cost is reduced, meanwhile, the construction quality is ensured, and the construction efficiency is high;
2. the remote terminal is used for remotely controlling the road marking machine, so that the manual operation cost is further reduced, and the automation is realized;
3. when the construction road surface is comparatively complicated, when the control unit can't confirm the initial construction position, road striping machine also can be moved to initial construction position by remote terminal control, remote terminal can also acquire the site operation picture that the camera unit shot, is convenient for monitor the site operation condition, can in time handle when the proruption situation appears.
Drawings
FIG. 1 is a functional block diagram of an automatic spray control system of the present invention;
fig. 2 is a schematic block diagram of an automatic coating control system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the invention discloses an automatic traffic marking spraying control system, which comprises:
the camera unit is used for acquiring the current construction road condition image information according to the current construction scheme;
the control unit is used for carrying out image processing on the current construction road condition image information and planning out construction map information and initial construction position information by combining a current construction scheme; and
and the road marking machine is used for moving to the initial construction position according to the initial construction position information, advancing according to the construction map information, and simultaneously automatically spraying traffic markings by using the spray painting unit. The constructor only needs to equip the paint and input the current construction scheme, and the spraying of the traffic marking can be automatically finished.
Referring to fig. 2, the automatic traffic marking spraying control system further includes a wireless unit and a remote terminal, and the remote terminal transmits the current construction plan to the control unit through the wireless unit. Utilize remote terminal to carry out remote control to road striping machine, further less manual work cost realizes automaticly, and when the construction road surface was comparatively complicated, the control unit can't confirm the initial construction position, road striping machine also can be moved to initial construction position by remote terminal control, remote terminal can also acquire the site operation picture that the unit of making a video recording shot, is convenient for monitor the site operation condition, can in time handle when proruption situation appears.
With continued reference to fig. 2, the road marking machine further includes a road block detection unit and a cleaning unit, the road block detection unit detects whether there is an obstacle on the current construction road surface, if there is an obstacle, the cleaning unit is started to clean the obstacle, and if not, the road marking machine travels normally. When the roadblock detection unit detects that the current construction road surface has the obstacle, the cleaning unit is started to clean the obstacle, so that the labor cost is further reduced, and the working efficiency is improved.
The road striping machine also comprises a paint stirring unit, and the paint stirring unit is used for stirring the paint in the paint box; the paint stirring unit is used for fully stirring the paint in the paint tank, so that the paint is more uniform, and the paint can be prevented from being coagulated.
The road striping machine further comprises a paint tank liquid level sensor, wherein the paint tank liquid level sensor is used for detecting the residual amount of paint in the paint tank and sending out a paint shortage signal when the residual amount of the paint is lower than a preset value. The paint tank liquid level sensor is used for detecting the residual amount of paint in the paint tank and sending out a paint shortage signal when the residual amount of the paint is lower than a preset value, so that a constructor can recall a road marking machine or bring the paint to a construction site for adding when the residual amount of the paint is insufficient, and the construction progress can be controlled better.
A traffic marking automatic spraying control method comprises the following steps: acquiring current construction road condition information according to a current construction scheme, wherein the current construction road condition information comprises current construction road condition image information, construction map information and initial construction position information, acquiring the current construction road condition image information by using a camera unit for image processing, and planning out the construction map information and the initial construction position information by combining the current construction scheme; the control unit is matched with the positioning unit to control the road striping machine to move to the initial construction position according to the initial construction position information, and controls the road striping machine to advance according to the construction map information, and meanwhile, the spray painting unit is used for automatically spraying traffic markings. The constructor only needs to equip the paint and input the current construction scheme, and the spraying of the traffic marking can be automatically finished.
The construction scheme comprises a longitudinal marking construction scheme, a transverse marking construction scheme and other marking construction schemes; the longitudinal marked line refers to a marked line arranged along the driving direction of the road, the transverse marked line refers to a marked line arranged at an angle with the driving direction of the road, and the other marked lines refer to character marks, reticular lines, central circles or marked lines in other forms.
For example: when the construction scheme is a longitudinal marking construction scheme, specifically, when the longitudinal marking construction scheme is a calibrated lane edge line, current construction road condition information is obtained according to the construction scheme for calibrating the lane edge line, the current construction road condition information comprises current construction road condition image information, construction map information and initial construction position information, the current construction road condition image information is obtained by using a camera unit, image processing is carried out by using a control unit, the construction map information and the initial construction position information are planned by combining the construction scheme for calibrating the lane edge line, and the initial construction position information can be calibrated to be a preset distance away from the edge of a road surface according to an image processing result; the construction map information includes a route along a current road traveling direction and parallel to the road surface edge by a preset distance; the control unit is matched with the positioning unit to control the road striping machine to move to the initial construction position according to the initial construction position information, and controls the road striping machine to advance according to the construction map information, and meanwhile, the spray painting unit is used for automatically spraying traffic markings. When the to-be-sprayed roadway edge line on the other side of the road is sprayed, the to-be-sprayed roadway edge line can be corrected by referring to the sprayed roadway edge line, in addition to the preset distance information from the edge of the road surface, and the method specifically comprises the following steps: and according to the image information of the sprayed roadway edge line, carrying out parallel correction on the roadway edge line to be sprayed.
Another example is: when the construction scheme is other marking construction schemes, specifically, other marking construction schemes are marked with characters, current construction road condition information is obtained according to the construction scheme marked with the characters, the current construction road condition information comprises current construction road condition image information, construction map information and initial construction position information, the current construction road condition image information is obtained by a camera unit, image processing is carried out by a control unit, the construction map information and the initial construction position information are planned by combining the construction scheme marked with the characters, and the initial construction position information can be marked as an initial spraying position needing to be marked with the characters according to the image processing result; the construction map information comprises a spraying travel path along the character mark and information whether paint is sprayed or not; the control unit is used for controlling the road striping machine to move to the initial construction position according to the initial construction position information in a matched mode with the positioning unit, controlling the road striping machine to advance according to the construction map information, meanwhile, spraying traffic markings are automatically sprayed by the spraying unit, and on a spraying advancing path of the character markings, the opening and closing of the spraying unit are controlled by each road section according to whether the road section is sprayed with paint or not, so that the character markings are drawn.
The current construction scheme is transmitted to the control unit by a remote terminal through a wireless unit. Utilize remote terminal to carry out remote control to road striping machine, further less manual work cost realizes automaticly, and when the construction road surface was comparatively complicated, the control unit can't confirm the initial construction position, road striping machine also can be moved to initial construction position by remote terminal control, remote terminal can also acquire the site operation picture that the unit of making a video recording shot, is convenient for monitor the site operation condition, can in time handle when proruption situation appears.
When the road marking machine advances according to the construction map information, the road block detection unit detects whether obstacles exist on the current construction road surface, if so, the cleaning unit is started to clean the obstacles, and if not, the road marking machine advances normally. When the roadblock detection unit detects that the current construction road surface has the obstacle, the cleaning unit is started to clean the obstacle, so that the labor cost is further reduced, and the working efficiency is improved.
When the road striping machine automatically sprays traffic markings, the coating stirring unit is used for stirring the coating in the coating box. The paint stirring unit is used for fully stirring the paint in the paint tank, so that the paint is more uniform, and the paint can be prevented from being coagulated.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. An automatic traffic marking spray control system, comprising:
the camera unit is used for acquiring the current construction road condition image information according to the current construction scheme;
the control unit is used for carrying out image processing on the current construction road condition image information and planning out construction map information and initial construction position information by combining a current construction scheme; and
and the road marking machine is used for moving to the initial construction position according to the initial construction position information, advancing according to the construction map information, and simultaneously automatically spraying traffic markings by using the spray painting unit.
2. The automatic traffic marking spray control system according to claim 1, wherein: the construction system also comprises a wireless unit and a remote terminal, wherein the remote terminal sends the current construction scheme to the control unit through the wireless unit.
3. The automatic traffic marking spray control system according to claim 1, wherein: the road block detection unit detects whether an obstacle exists on the current construction road surface, if so, the cleaning unit is started to clean the obstacle, and if not, the vehicle normally travels.
4. The automatic traffic marking spray control system according to claim 1, wherein: the coating stirring device further comprises a coating stirring unit, and the coating stirring unit is used for stirring the coating in the coating tank.
5. The automatic traffic marking spray control system according to claim 1, wherein: the coating tank liquid level sensor is used for detecting the residual amount of the coating in the coating tank and sending out a coating shortage signal when the residual amount of the coating is lower than a preset value.
6. An automatic spraying control method for traffic markings is characterized by comprising the following steps: acquiring current construction road condition information according to a current construction scheme, wherein the current construction road condition information comprises current construction road condition image information, construction map information and initial construction position information; and the control unit controls the road striping machine to move to the initial construction position according to the initial construction position information, controls the road striping machine to advance according to the construction map information, and automatically sprays traffic markings by using the spray painting unit.
7. The automatic spraying control method for traffic markings according to claim 6, characterized in that: the construction scheme comprises a longitudinal marking construction scheme, a transverse marking construction scheme and other marking construction schemes.
8. The automatic spraying control method for traffic markings according to claim 6, characterized in that: the current construction scheme is sent to the control unit by a remote terminal.
9. The automatic spraying control method for traffic markings according to claim 6, characterized in that: when the road marking machine advances according to the construction map information, the road block detection unit detects whether obstacles exist on the current construction road surface, if so, the cleaning unit is started to clean the obstacles, and if not, the road marking machine advances normally.
10. The automatic spraying control method for traffic markings according to claim 6, characterized in that: when the road striping machine automatically sprays traffic markings, the coating stirring unit is used for stirring the coating in the coating box.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010047599.XA CN111218885A (en) | 2020-01-16 | 2020-01-16 | Automatic spraying control system and method for traffic marking |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010047599.XA CN111218885A (en) | 2020-01-16 | 2020-01-16 | Automatic spraying control system and method for traffic marking |
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| CN111218885A true CN111218885A (en) | 2020-06-02 |
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| CN202010047599.XA Pending CN111218885A (en) | 2020-01-16 | 2020-01-16 | Automatic spraying control system and method for traffic marking |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2338894A (en) * | 1941-05-17 | 1944-01-11 | Lucian H Beebe | Highway marking system and device for applying same |
| DE1658432A1 (en) * | 1966-05-13 | 1971-11-18 | Moses Bollag | Control device for road marking machines |
| US4247045A (en) * | 1979-04-20 | 1981-01-27 | Prismo Universal Corporation | Automatic volume control system |
| CN106976564A (en) * | 2017-04-28 | 2017-07-25 | 苏州亮磊知识产权运营有限公司 | A kind of Intelligent road scoring system cooperated based on unmanned plane and its method |
| CN110593073A (en) * | 2019-10-11 | 2019-12-20 | 唐山学院 | Intelligent vehicle capable of automatically spraying traffic markings and control method |
-
2020
- 2020-01-16 CN CN202010047599.XA patent/CN111218885A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2338894A (en) * | 1941-05-17 | 1944-01-11 | Lucian H Beebe | Highway marking system and device for applying same |
| DE1658432A1 (en) * | 1966-05-13 | 1971-11-18 | Moses Bollag | Control device for road marking machines |
| US4247045A (en) * | 1979-04-20 | 1981-01-27 | Prismo Universal Corporation | Automatic volume control system |
| CN106976564A (en) * | 2017-04-28 | 2017-07-25 | 苏州亮磊知识产权运营有限公司 | A kind of Intelligent road scoring system cooperated based on unmanned plane and its method |
| CN110593073A (en) * | 2019-10-11 | 2019-12-20 | 唐山学院 | Intelligent vehicle capable of automatically spraying traffic markings and control method |
Non-Patent Citations (1)
| Title |
|---|
| 鄂晓宇等: "《筑路机械与施工机械化》", 29 February 2004 * |
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Application publication date: 20200602 |