CN205027440U - Vertical road lighting luminance testing arrangement - Google Patents
Vertical road lighting luminance testing arrangement Download PDFInfo
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- CN205027440U CN205027440U CN201520547395.7U CN201520547395U CN205027440U CN 205027440 U CN205027440 U CN 205027440U CN 201520547395 U CN201520547395 U CN 201520547395U CN 205027440 U CN205027440 U CN 205027440U
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Abstract
The utility model provides a vertical road lighting luminance testing arrangement, the device include the main part support and set up running gear in the main part support, survey positioning mechanism, measuring mechanism, central computer construct, wherein, from taking directive wheel and drive wheel among the running gear, through calculating the mechanism controls running gear work position of moving in the center, and surveys positioning mechanism and utilize four infrared ranging devices to carry out the accurate positioning of position and direction, cooperates the measuring mechanism to carry out data measurement behind the location. The utility model discloses control is accurate, and degree of automation is high, can realize the data real -time measurement, and has the memory storage function, stable performance, effectively volume of reducing manual work and measurement of correlation cost to measured data.
Description
Technical field
The utility model relates to road lighting field tests, is specially a kind of collection of particular mechanical means combining information and control technology of adopting and implements the road lighting luminance test device of test automatically to pavement of road brightness of illumination.
Background technology
Road lighting luminance test is important method and the means of evaluating and verify road lighting engineering design rationality and reliability, the content of its test mainly refers to the mean flow rate of road, the homogeneity of brightness, to the giddy light by dominated level that user produces, ambient lighting coefficient around road, and vision guide etc., its result directly can have influence on function and the comfortableness of the security of related personnel and the vision of driver in road occupation process.
At present, the road lighting luminance test means generally applied are all arrange measuring point by adopting manual type to carry out stress and strain model to test domain, the brightness of test point of arranging to be tested one by one by digital luminance meter by center method and/or four-point method, then test data is obtained by the mode of artificial reading, record, and draw test result after test data is carried out storage and computing, this test mode also exists following defect:
1), inefficiency, labour intensity is large.The luminance test of single test point needs a few individual to cooperatively interact just can complete the links such as test, reading, record, and whole test process is wasted time and energy;
2), precision is not high, is subject to external environment influence.On the one hand, in test process, testing tool is subject to the interference of tester self to light, there is error in the test value of single test point, on the other hand, because weather and intensity of illumination all can change in time, manual testing's mode is consuming time longer simultaneously, then between different test point, test duration difference is comparatively large, causes test value to produce comparatively big error;
3), poor stability.When carrying out brightness of illumination test to some pavement of road be open to traffic, the personal safety of dependence test personnel is difficult to be protected.
For these reasons, multiple illuminometer is fixedly installed on the proving installation of a remote control operation by utility model patent CN103822704A, the width of proving installation can shrink along road width direction, rely on road wheel to run along link length direction, its method of operation is the other remote pilot of artificial machine in real time, realize proving installation movement on roads direction one by one test point carry out illumination test, but there is following problem in this device:
1), before this proving installation tests, still need manually to carry out layout test point, the length according to test zone carries out assigning a work of test point, wastes time and energy;
2), proving installation relies on manual remote control to run, the stationarity of trolley travelling and arrive the accuracy of test point, and rely on manually operated level completely, test job is still wasted time and energy, and manual control impacts measuring accuracy;
3), illuminometer is positioned at the inside of proving installation, and proving installation self has an impact to the test value of illumination and brightness, thus affects measuring accuracy;
4), proving installation comprises multiple illuminometer, and the cost of proving installation is promoted greatly, and is fixedly installed in the illuminometer of proving installation stretching structure inside, utilization factor is low, causes the unnecessary increase of manufacturing cost;
5), due to the multiple illuminometer of proving installation inside fixed installation, the distance between illuminometer like this is nonadjustable.During on-the-spot test, fix the direction of multiple illuminometer along proving installation, the distance between test point is nonadjustable, and the precision of so testing can not adjust flexibly, causes dirigibility and the bad adaptability of proving installation.
For above-mentioned existing problem, a kind of complete full-automatic pavement of road lighting detecting device and detection method are proposed, to reduce labor workload in test process, and improve measuring accuracy, automaticity, the adaptability of proving installation, reduce its manufacturing cost simultaneously.
Utility model content
The technical matters that the utility model solves is to provide a kind of vertical road lighting luminance test device, this device and measuring method thereof are applicable to the automatic test of highway, railway and municipal road pavement brightness of illumination, particularly tunnel portal section illumination test, to solve defect existing in above-mentioned background technology.
A kind of vertical road lighting luminance test device, comprises main body rack, travelling mechanism, Detection location mechanism, measuring mechanism and center calculation mechanism, wherein:
Main body rack is a hollow out framework support be made up of high strength light material, and for supporting all parts of whole proving installation, the principle of design of its height is under the condition of the whole proving installation of satisfied supporting, reduce its height as far as possible;
Travelling mechanism comprises three groups of wheel constructions, often organize wheel construction and comprise at least one single-wheel, the front portion of travelling mechanism arranges one group of wheel construction, is the deflecting roller for driving main body rack to turn to, and rear portion is arranged side by side two groups of wheel constructions, it is the driving wheel for driving main body rack to advance or retreat;
Detection location mechanism comprises four Detection location unit, described Detection location unit is infrared distance measuring device, be installed on the centre position of the bottom four edges of the hollow out framework support of main body rack, for measuring main body rack and the length between road surface to be detected starting point, terminal and curb or distance;
Measuring mechanism is fixed on the crown center position of main body rack, comprise sway brace and nitometer, wherein nitometer is connected in sway brace side end and reaches outside main body rack by sway brace, meanwhile, the delivery device that sway brace can be realized upper and lower propelling movement by is provided with in sway brace bottom;
Center calculation mechanism is arranged in the hollow out framework support of main body rack; by hollow out framework support, center calculation mechanism is protected; center calculation mechanism comprises the microcomputer as operand store; and respectively the work of travelling mechanism, Detection location mechanism and measuring mechanism is controlled by microcomputer; simultaneously; it also stores data result as operand store, and carries out corresponding calculating by test specification, exports the parameter value that user needs.
In the utility model, described center calculation mechanism is also connected with a personal-machine interactive device, this human-computer interaction device includes but not limited to mouse, keyboard, display screen, touching display screen, handheld device end.User locates to input necessary relevant information human-computer interaction device, the parameter value needed for reading simultaneously or exporting.
In the utility model, main body rack preferably adopts aluminum alloy materials to make, its rigid frame structure formed can be used for all parts supporting whole proving installation, high strength light material is adopted both to ensure that the rigidity of Whole Equipment, make weight of equipment comparatively light simultaneously, be easy to carry, simultaneously, its height value is as far as possible low under the condition of satisfied supporting proving installation, and the frame size specification preferably adopted is: the wide * height of long * is 500mm*500mm*1000mm.
Deflecting roller in three groups of wheel constructions of travelling mechanism is connected with steer motor by gear transmission mode, the steering power of steer motor generator; And driving wheel is connected with drive motor by Chain conveyer, drive motor provides the onward impulse of proving installation.Steer motor and drive motor provide electric power to supply by the accumulator be arranged in main body rack; The operation of travelling mechanism controls by by center calculation mechanism, namely the proving installation position information obtained according to detecting and locating system by center calculation mechanism and test point positional information, controlling run mechanism realizes turning to of proving installation and the action such as forward/backward.
Detection location mechanism also comprises the baffle plate of the end face for obstruct the road front and back ends end face and both sides roadbed, baffle plate has the reflecting surface coordinating infrared distance measuring device, the distance that Detection location mechanism measures main body rack distance road two side shield by baffle plate and infrared distance measuring device, measures starting point and measure between terminal, determine that grid is layouted and the position of proving installation with this, be used as this data upload to center calculation mechanism controlling the positional information that proving installation runs simultaneously.
Simultaneously, for reducing cost/reduction operation steps, Detection location mechanism also can only include the baffle plate for the front and back ends end face that obstructs the road, and cancel the end face baffle plate of both sides roadbed, directly use roadbed to do reflecting surface in roadbed both sides, main body rack distance road both sides roadbed measured by road front and back ends end face baffle plate and roadbed, the distance measured between starting point and measurement terminal goes forward side by side line item to utilize the infrared distance measuring device of Detection location mechanism to coordinate.
The length of the sway brace of measuring mechanism is 800 ~ 1200mm, and delivery device is cylinder or hydraulic cylinder, its setting range is at 500 ~ 800mm, nitometer height and position is adjusted by the stroke of setting value and delivery device, its adjustment position meets code requirement with the height of the measurement brightness or illumination that make nitometer and is as the criterion, and the effect of sway brace makes the test point position of nitometer away from equipment, thus discharge the impact of surveying instrument on measuring accuracy.
In the utility model, center calculation mechanism is as the calculating core of proving installation, and its Function and operation is:
One, when proving installation enters test site, gone out the profile of test zone by Detection location means sense, according to test specification, automatically carry out test point and assign a work;
Two, the position in test process residing for test point position and proving installation, the operation of controlling run mechanism, makes proving installation arrive test point position and measures;
Three, test data is carried out corresponding stored by test point position;
Four, when the test job of whole test point completes, all test datas are calculated by test specification, export the parameter value that user needs.
A kind of road lighting luminance test method, this method of testing, based on above-mentioned proving installation, specifically comprises following operation steps:
1, in the starting point of testing location determination test zone, terminal and road both sides mark, and baffle plate is set in relevant position, related test parameters is inputted by human-computer interaction device, by the distance of the road both sides mark of the Distance geometry transverse direction of proving installation automatic detection starting point to the end in test zone, in detection process, first self orientation of proving installation is adjusted, its working direction is made to be terminal direction, controlling run mechanism of center calculation mechanism runs, make proving installation left in original place, part on the right side and do not rotate 0 ~ 30 °, using the infrared distance measuring device of four in roadbed plane read be worth when being minimum proving installation institute in the face of direction as test run direction, namely Width and the length direction of test zone is determined, thus set up the coordinate system of test zone, obtain the test dimensional profile in coordinate system build-in test region and the positional information of proving installation.
2, test coordinate system build-in test region is divided into some networks by test specification, and in network, determine test point position by center method or four-point method, calculate the coordinate position of each test point in test coordinate system, and according to the coordinate position at proving installation place, controlling run mechanism brings into operation to the first test point, the second test point ..., until tested, in the process, the job order of center calculation mechanism is:
1., proving installation is moved to roughly nominative testing point by controlling run mechanism;
2., control Detection location mechanism and travelling mechanism acting in conjunction are accurately located equipment;
3., control survey mechanism completes the brightness of each test point or the measurement of illumination, and measured value is back to center calculation mechanism and stores, and namely completes the surveying work of a test point;
4., proving installation moves to roughly next test point by controlling run mechanism, starts next working cycle.
3, controlling run mechanism of center calculation mechanism, Detection location mechanism and measuring mechanism complete the surveying work of all test points in measured zone successively, the test data of all test points stored and carries out data processing, on human-computer interaction device, then demonstrating the result datas such as the change curve in required all test datas and the test zone coordinate system that calculates.
In the method, when road surface luminance uniformity is poor or to measuring accuracy require higher time, the grid number of division should be more, namely test point Bu get Mi some.Its basic division rule is: when test zone length is less than or equal to 50m, along road direction by test zone length ten decile; When test zone length is greater than 50m, equidistantly divide by the principle of each grid length of side 5m, the part of discontented 5m is separately as lattice.
Road lighting luminance test device of the present utility model is compared with background technology, can realize automatically arranging that test point, measurement, record and data processing are to draw related data information, in help field, technician carries out correlation analysis, and its advantage and beneficial effect are:
1), test speed is fast, Measuring Time is short, solves manual testing's speed slow, is subject to the defect of external environment influence;
2), automaticity is high, and test process completes automatically, and eliminates the impact of proving installation self on measuring accuracy greatly, and measuring accuracy is high;
3), this proving installation is simple to operate, greatly saved human and material resources, indirectly reduced the possibility that manual measurement causes error;
4), the adaptability of proving installation is good, can need the measuring accuracy adjusting proving installation according to test specification or scene.
Accompanying drawing explanation
Fig. 1 is front elevation of the present utility model.
Fig. 2 is vertical view of the present utility model.
Fig. 3 is using state schematic diagram of the present utility model.
Fig. 4 is travelling mechanism schematic diagram of the present utility model.
Fig. 5 is measuring mechanism schematic diagram of the present utility model.
Wherein: 1, measuring mechanism; 2, center calculation mechanism; 3, main body rack; 4, Detection location mechanism; 5, travelling mechanism; 6, human-computer interaction device; 7, infrared distance measuring device; 8, end stop; 9, starting point baffle plate; 10, left side roadbed end face baffle plate; 11, right side roadbed end face baffle plate; 12, driving gear set; 13, accumulator; 14, drive motor; 15, driving-chain; 16, driving wheel; 17, deflecting roller; 18, steer motor; 19, sway brace; 20, nitometer; 21, cylinder.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
See the embodiment of a kind of vertical road lighting luminance test device of Fig. 1 ~ Fig. 5, in the present embodiment, measurement mechanism comprises main body rack 3, travelling mechanism 5, Detection location mechanism 4, measuring mechanism 1, center calculation mechanism 2 and human-computer interaction device 6, wherein, main body rack 3 makes by aluminum alloy materials the framed structure forming certain rigidity, the wide * height of its long * is 500mm*500mm*1000mm, low to ensure equipment center of gravity, operates steadily.Main body rack 3 for supporting whole proving installation comprises all parts of travelling mechanism 5, Detection location mechanism 4, measuring mechanism 1, center calculation mechanism 2 and human-computer interaction device 6.The core of center calculation mechanism 2 proving installation for this reason, it is installed within main body rack 3, avoid it impaired, and the side of center calculation mechanism 2 other be also provided with human-computer interaction device 6 for centered by calculate mechanism 2 I/O relevant information and data, this human-computer interaction device 6 comprises keyboard, mouse and display.
Travelling mechanism 5 comprises three groups of wheels, often organizing wheel is one, in three wheels, a wheel is arranged in front side, is deflecting roller 17, and two wheels are arranged in rear side, for driving wheel 16, deflecting roller 17 is connected with steer motor 18 by driving gear set 12, and steer motor 18 provides electric power by accumulator 13, and center calculation mechanism 2 controls the operation of steer motor 18, by center calculation mechanism 2 according to proving installation position and test point position, controlling run mechanism 5 runs; Driving wheel 16 is connected with drive motor 14 by driving-chain 15, and drive motor 14 provides proving installation onward impulse, and this proving installation utilizes accumulator 13 to provide power drive drive motor 14.
And Detection location mechanism 4 comprises four infrared distance measuring devices 7 in four centre positions, limit being arranged on main body rack 3 framework base, starting point baffle plate 9, end stop 8, left side roadbed end face baffle plate 10 and right side roadbed end face baffle plate 11, starting point baffle plate 9, end stop 8, left side roadbed end face baffle plate 10 and right side roadbed end face baffle plate 11 are used for being arranged on measurement starting point in measured zone respectively, measure terminal and measure roadbed endface position to determine test zone scope, and four infrared distance measuring devices 7 connect in center calculation mechanism 2 respectively by data-interface.
Measuring mechanism 1 is positioned at the crown center position of main body rack, by cylinder 21, sway brace 19, nitometer 20 is formed, nitometer 20 carries out illumination, the measurement of brightness, and transmitting measured values is stored to center calculation mechanism 2, nitometer 20 height and position is adjusted by the stroke of cylinder 21, its setting range (i.e. the changing value scope of height) is 500 ~ 800mm, the measuring height that cylinder 21 inputs according to user adjusts, the height of measurement brightness or illumination is made to meet code requirement, the effect of sway brace 19 makes the test point position of nitometer 20 away from equipment, thus eliminate the impact of surveying instrument on measuring accuracy, its length is 1000mm (i.e. brachium).
Measuring method when utilizing the road lighting luminance test device of the present embodiment to measure is as follows:
1, in the starting point of testing location determination test zone, terminal and road both sides mark, and end stop 8 is set respectively in relevant position, starting point baffle plate 9, left side roadbed end face baffle plate 10 and right side roadbed end face baffle plate 11, related test parameters is inputted by human-computer interaction device 6, by the distance of the road both sides mark of the Distance geometry transverse direction of Detection location mechanism 4 automatic detection starting point to the end in test zone, in detection process, adjustment proving installation orientation, its working direction is made to be terminal direction, then, controlling run mechanism of center calculation mechanism 25 makes proving installation left in original place, part on the right side and do not rotate 0 ~ 30 °, using the infrared distance measuring device of four in roadbed plane read be worth when being minimum proving installation institute in the face of direction as test run direction, namely Width and the length direction of test zone is determined, thus set up the coordinate system of test zone, obtain the test dimensional profile in coordinate system build-in test region and the positional information of proving installation.
2, the dimensional profile in test coordinate system build-in test region is divided into some networks, its basic division rule is: when test zone length is less than or equal to 50m, along road direction by test zone length ten decile; When test zone length is greater than 50m, equidistantly divide by the principle of each grid length of side 5m, the part of discontented 5m is separately as lattice.
Then, in network, test point is determined by center method or four-point method, calculate the coordinate position of each test point in test coordinate system, with horizontal and vertical distance for position coordinates, and according to the coordinate position at place, proving installation position, controlling run mechanism 5 brings into operation to the first test point, second test point ... until tested, in the process, the job order of center calculation mechanism 2 is:
1., proving installation is moved to roughly nominative testing point by controlling run mechanism 5;
2., control Detection location mechanism 4 and travelling mechanism 5 acting in conjunction are accurately located proving installation;
3., control survey mechanism 1 completes the brightness of each test point or the measurement of illumination, and measured value is back to center calculation mechanism 2 and stores, and namely completes the surveying work of a test point;
4., proving installation moves to roughly next test point by controlling run mechanism 5, starts next working cycle.
3, controlling run mechanism of center calculation mechanism 5, Detection location mechanism 4 and measuring mechanism 1 complete the surveying work of all test points in measured zone successively, the test data of all test points is stored and carries out data processing, then on human-computer interaction device 6, required test data is demonstrated, as illumination, brightness, contrast and with data results such as the change curves in test zone coordinate system.
So, this road lighting luminance test device completes the work of road luminance test rapidly, efficiently, so ensure that the accuracy of test value, greatly reduces the labor workload of test job, improve work efficiency.
This proving installation only needs tester by equipment built-in test region, starting and terminal point baffle plate is placed into starting and terminal point position and determines test zone profile, road lighting luminance test device will complete all dependence test work automatically, until calculate the brightness of test zone, illumination, contrast and the data result such as change curve in test zone coordinate system thereof.
More than show and describe ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (8)
1. a vertical road lighting luminance test device, it is characterized in that, device comprises:
Main body rack: the hollow out framework support being all parts for supporting whole proving installation that is made up of high strength light material;
Travelling mechanism: travelling mechanism comprises three groups of wheel constructions, often organize wheel construction and comprise at least one single-wheel, the front portion of travelling mechanism arranges one group of wheel construction, for the deflecting roller for driving main body rack to turn to, and rear portion is arranged side by side two groups of wheel constructions, it is the driving wheel for driving main body rack to advance or retreat;
Detection location mechanism: comprise four Detection location unit, described Detection location unit is infrared distance measuring device, be installed on the centre position of the bottom four edges of the hollow out framework support of main body rack, for measuring main body rack and the length between road surface to be detected starting point, terminal and curb or distance;
Measuring mechanism: measuring mechanism is fixed on the crown center position of main body rack, comprise sway brace and nitometer, wherein nitometer is connected in sway brace side end and reaches outside main body rack by sway brace, meanwhile, the delivery device that sway brace can be realized upper and lower propelling movement by is also provided with in sway brace bottom;
Center calculation mechanism: center calculation mechanism is arranged in the hollow out framework support of main body rack; by hollow out framework support, center calculation mechanism is protected; center calculation mechanism comprises the microcomputer as operand store; this microcomputer controls the work of travelling mechanism, Detection location mechanism and measuring mechanism respectively; simultaneously; it also stores data result as operand store, and carries out corresponding calculating by test specification, exports the parameter value that user needs.
2. one according to claim 1 vertical road lighting luminance test device, it is characterized in that, described center calculation mechanism is also connected with a personal-machine interactive device, this human-computer interaction device includes but not limited to mouse, keyboard, display screen, touching display screen, handheld device end.
3. according to claim 1 or 2 vertical road lighting luminance test device described in any one, it is characterized in that, described main body rack adopts aluminum alloy materials to make, and its frame size specification is: the wide * height of long * is 500mm*500mm*1000mm.
4., according to claim 1 or 2 vertical road lighting luminance test device described in any one, it is characterized in that, the deflecting roller in three groups of wheel constructions of described travelling mechanism is connected with steer motor by gear transmission mode, by steer motor generator steering power; And driving wheel is connected with drive motor, by drive motor generator onward impulse by Chain conveyer mode.
5. according to claim 1 or 2 vertical road lighting luminance test device described in any one, it is characterized in that, described Detection location mechanism is included in the baffle plate of the front and back ends end face that obstructs the road, and baffle plate has the reflecting surface coordinating infrared distance measuring device.
6. one according to claim 5 vertical road lighting luminance test device, is characterized in that, described Detection location mechanism also comprises the end face baffle plate for both sides roadbed.
7., according to claim 1 or 2 vertical road lighting luminance test device described in any one, it is characterized in that, the length of the sway brace of described measuring mechanism is 800 ~ 1200mm.
8. according to claim 1 or 2 vertical road lighting luminance test device described in any one, it is characterized in that, delivery device in described measuring mechanism is cylinder or hydraulic cylinder, and for adjusting the level height of cylinder bottom and sway brace, the value range of its adjustment is 500 ~ 800mm.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043535A (en) * | 2015-07-27 | 2015-11-11 | 湖南省交通科学研究院 | Upright road illumination test device and test method |
| CN105628194A (en) * | 2016-03-11 | 2016-06-01 | 复旦大学 | Road lighting quality field measurement method |
| CN106197660A (en) * | 2016-07-11 | 2016-12-07 | 浙江生辉照明有限公司 | Highway tunnel illumination apparatus for evaluating and dynamic assessment method |
| CN107102313A (en) * | 2017-07-05 | 2017-08-29 | 北醒（北京）光子科技有限公司 | A kind of detection means |
| CN112504443A (en) * | 2021-01-04 | 2021-03-16 | 中交国通公路工程技术有限公司 | Measuring system for rapidly detecting tunnel illumination |
| CN114061747A (en) * | 2021-11-16 | 2022-02-18 | 招商局重庆公路工程检测中心有限公司 | Automatic measuring device and method for road surface brightness |
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2015
- 2015-07-27 CN CN201520547395.7U patent/CN205027440U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043535A (en) * | 2015-07-27 | 2015-11-11 | 湖南省交通科学研究院 | Upright road illumination test device and test method |
| CN105043535B (en) * | 2015-07-27 | 2017-06-23 | 湖南省交通科学研究院 | A kind of vertical road lighting luminance test device and method of testing |
| CN105628194A (en) * | 2016-03-11 | 2016-06-01 | 复旦大学 | Road lighting quality field measurement method |
| CN105628194B (en) * | 2016-03-11 | 2018-01-19 | 复旦大学 | A kind of road lighting quality on-site measurement method |
| CN106197660A (en) * | 2016-07-11 | 2016-12-07 | 浙江生辉照明有限公司 | Highway tunnel illumination apparatus for evaluating and dynamic assessment method |
| CN106197660B (en) * | 2016-07-11 | 2018-07-06 | 浙江生辉照明有限公司 | Highway tunnel illumination apparatus for evaluating and dynamic assessment method |
| CN107102313A (en) * | 2017-07-05 | 2017-08-29 | 北醒（北京）光子科技有限公司 | A kind of detection means |
| CN112504443A (en) * | 2021-01-04 | 2021-03-16 | 中交国通公路工程技术有限公司 | Measuring system for rapidly detecting tunnel illumination |
| CN114061747A (en) * | 2021-11-16 | 2022-02-18 | 招商局重庆公路工程检测中心有限公司 | Automatic measuring device and method for road surface brightness |
| CN114061747B (en) * | 2021-11-16 | 2024-05-10 | 招商局重庆公路工程检测中心有限公司 | Automatic measuring device and method for road brightness |
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Address after: 410000 No. three, Furong Middle Road, Changsha City, Hunan province 472 Patentee after: Hunan Traffic Science Research Institute Co Ltd Address before: 410000 No. three, Furong Middle Road, Changsha City, Hunan province 472 Patentee before: Hunan Communications Research Institute |
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Effective date of registration: 20181224 Address after: 410004 No. 239 Shaoshan South Road, Yuhua District, Changsha City, Hunan Province Patentee after: Hunan Transportation and Water Conservancy Construction Group Co., Ltd. Address before: 410000 No. 472, Section 3, Furong Middle Road, Changsha City, Hunan Province Patentee before: Hunan Traffic Science Research Institute Co Ltd |
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