A test device for testing the reflectivity of traffic road markings
By designing an experimental device that includes environmental simulation and road marking light sensitivity testing, the problem of testing the reflectivity of traffic markings under rain, fog, humidity and hot and cold conditions was solved, and efficient and accurate performance evaluation was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGJIAOYIGONG BUREAU TRAFFIC ENG CO LTD
- Filing Date
- 2024-12-25
- Publication Date
- 2026-06-02
AI Technical Summary
Existing technologies lack effective testing equipment to test the reflectivity of traffic road markings in rainy, foggy, humid, and alternating hot and cold conditions, resulting in the marking film being blurry in these environments and affecting the reaction time of road users.
A test device was designed, including a test chamber, an environmental simulation device (heating, air cooling, water droplets and friction device), and a road marking light sensing test device, which can simulate dry and wet cycles, hot and cold alternation and wheel friction, and evaluate the road marking reflectivity through a retroreflection coefficient measuring instrument.
It achieves realistic simulation under different environmental conditions, simplifies the test process, reduces test costs and time, and improves the accuracy and efficiency of testing.
Smart Images
Figure CN224317516U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of traffic road sign detection technology. Specifically, it discloses a test device for testing the reflectivity of traffic road markings and provides a device that can simulate the degradation of reflectivity of traffic signs due to environmental influences in rainy, foggy, or humid environments. Background Technology
[0002] With technological advancements, new materials are constantly emerging for application in traffic reflective facilities. The markings on the signboard's base film can be completely replaced by digital printing instead of manual application. Specialized UV inks are used for printing, ensuring vibrant colors, excellent reflectivity, and improved corrosion resistance, extending the lifespan of the signboard. Simultaneously, new reflective materials similar to microprisms have emerged for use as the base film for signboards. New road marking machines employ intelligent control of the marking flow rate and material temperature, while simultaneously monitoring the surrounding environment to control marking quality. This improves road adhesion, marking thickness, and the density and embedding depth of glass beads in the paint, thereby enhancing the durability, reflectivity, and anti-skid properties of the markings.
[0003] The domestic technical level of traffic signs and markings: Strict standards and specifications exist for color, lines, characters, graphic dimensions, and reflectivity levels. Their primary purpose is to accurately, clearly, and concisely convey information, attracting the attention of road users and allowing them sufficient reaction time. While traffic signs and markings used together can correctly, accurately, and simply convey information and attract the attention of road users, allowing them sufficient reaction time, the film on the signs is easily affected by environmental factors in rainy, foggy, or humid environments, leading to blurring. If the road is located in the south, where the humidity level is high, the impact of environmental factors on signs and markings is even more pronounced. Currently, there is no comprehensive testing equipment for the reflectivity of traffic road markings. Utility Model Content
[0004] To address the problems existing in the prior art, the purpose of this utility model is to propose a test device for testing the reflectivity of traffic road markings. This device can measure the reflectivity of road traffic markings under conditions such as dry-wet cycles and alternating hot and cold environments. This device can simulate road traffic markings in actual situations, thereby more realistically reflecting the reflectivity of road traffic markings.
[0005] To achieve the above objectives, this utility model employs the following technical solution. A test device for testing the reflective performance of traffic road markings, characterized in that it includes a test chamber, with an asphalt road sample placed at the bottom of the chamber. Reflective road markings are applied to the road surface, and a drainage device is provided on the side of the asphalt road. An environmental simulation device and a road marking light-sensing test device are respectively installed above the test chamber. The environmental simulation device includes a heating device, a cooling device, a water droplet device, and a friction device. The heating device is a heating metal box with built-in metal heating wires, fixed to the right side wall of the test chamber. The cooling device is a cooling box with built-in fans, fixed to both sides of the upper wall of the asphalt road sample. The water droplet device consists of a water spray nozzle at the top of the test chamber, a control ring, a water storage tank at the top of the chamber, a water inlet pipe, a valve, and an outer water supply tank, and is installed on the top of the test chamber.
[0006] The friction device consists of a slide rail block, a connecting arm, a rotating shaft, and a simulated tire, and is installed on the slide rail as required.
[0007] The marking light sensing test device consists of a slide block, a rotating shaft, a connecting arm, an illumination lamp, and a retroreflection coefficient measuring instrument. The retroreflection coefficient measuring instrument is installed on the right side of the chamber wall. The illumination lamp's incident angle can be adjusted via the rotating shaft, and it can emit parallel light of equal intensity, allowing the emitted light to be reflected into the retroreflection coefficient measuring instrument, where the retroreflection coefficient data is imported into the computer. The drainage device consists of a drainage ditch, a drainage pipe, and a drainage pool. After simulated rainfall tests, excess rainfall is ensured to flow into the drainage pool through the drainage pipe. A water droplet device is installed on the upper part of the test chamber, connected to an external water supply pool via an inlet pipe. A valve is located in the middle of the pipe, allowing control of the water droplet device's on / off state. The water nozzles in the water droplet device have adjustable orifice sizes to simulate rainfall amounts under different rainfall conditions.
[0008] Furthermore, the left-end openable test chamber allows for adjustment of the internal devices of the test chamber under different test conditions.
[0009] Furthermore, the test chamber has a built-in slide rail. When testing the road marking's resistance to wheel friction and reflectivity, a friction device is installed, and slide rail blocks and the device below are installed along the slide rail; when testing the intensity of light received by the retroreflection coefficient measuring instrument, a road marking light-sensing testing device is installed, and slide rail blocks, a rotating shaft, a connecting arm, and an illumination lamp are installed along the slide rail.
[0010] Furthermore, the test chamber has a built-in thermometer, which can control the temperature of the test chamber when conducting alternating hot and cold tests.
[0011] Furthermore, the test chamber is made of high-strength glass.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] This invention can realistically simulate the dry-wet cycle, hot-cold alternation, and friction environment of traffic road markings on asphalt roads, thereby more realistically reflecting the reflective performance of traffic road markings on asphalt roads.
[0014] The test chamber of this invention is made of high-strength glass, allowing external observation of the interior. A switchable door on the left side of the chamber allows for switching of internal devices according to different needs. The asphalt sample does not need to be removed during the test, making the process simple, quick, and highly accurate. It effectively reveals the impact of different environments on the reflective properties of traffic markings on asphalt samples.
[0015] Compared with traditional tests, this invention eliminates the need to prepare multiple sets of samples and allows for multiple comparative tests to be conducted directly on the same sample, thus greatly reducing testing costs and time. Attached Figure Description
[0016] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.
[0017] Figure 1 This is a front view of a test device for testing the reflective performance of traffic road markings according to the present invention;
[0018] Figure 2 This is a side view of a test device for testing the reflective performance of traffic road markings according to the present invention;
[0019] Figure 3 This is a schematic diagram of the air-cooling device in this utility model;
[0020] Figure 4 This is a schematic diagram of the dripping device structure in this utility model;
[0021] Figure 5 This is a schematic diagram of the friction device structure in this utility model;
[0022] Figure 6 This is a schematic diagram of the photosensitive testing device in this utility model;
[0023] Figure 7 This is a schematic diagram of the heating device structure in this utility model;
[0024] Figure 8 This is a schematic diagram of the dripping nozzle structure of the dripping device in this utility model;
[0025] Figure 1-8In the center: 1-Test chamber; 2-Asphalt road sample; 3-Road reflective markings; 4-Drainage device; 5-Heating device; 6-Water droplet device; 7-Air cooling device; 8-Marking light sensing test device; 9-Slide rail; 10-Friction device; 11-Thermometer; 41-Drainage ditch; 42-Drainage pipe; 43-Drainage pool; 51-Metal heating wire; 52-Heating metal box; 61-Control ring; 62-Outer water supply pool; 63-Water inlet pipe; 64-Valve; 65-Drip nozzle; 66-Top water storage tank; 71-Cooling chamber; 72-Fan; 84-Illumination lamp; 85-Retroreflection coefficient measuring instrument; 101-Slide rail block; 102-Connecting arm; 103-Rotating shaft; 104-Simulated tire. Detailed Implementation
[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0027] Reference Appendix Figure 1-8 This utility model discloses a test device for testing the reflectivity of traffic road markings, comprising: a test chamber 1, an asphalt road sample 2 placed at the bottom of the test chamber, a road reflective marking 3 painted on the road, and a drainage device 4 provided on the side of the asphalt road. An environmental simulation device and a road marking light sensitivity testing device are respectively provided above the test chamber. The environmental simulation device includes: a heating device 5, a cooling device 7, a water droplet device 6, and a friction device 10. The heating device 5 is a heating metal box 52 with built-in metal heating wire 51, fixed to the right side wall of the test chamber. The cooling device 7 is a cooling box 71 with built-in fans 72, respectively fixed to both sides of the upper wall of the asphalt road sample 2. The water droplet device 6 consists of a water spray nozzle 65 on the top of the test chamber, a control ring 61, a water storage tank 66 on the top of the chamber, a water inlet pipe 63, a valve 64, and an outer water supply tank 62, and is installed on the top of the test chamber. The friction device 10 consists of a slide block 101, a connecting arm 102, a rotating shaft 103, and a simulated tire 104, and is installed on the slide rail 9 as required. The marking light sensing test device 8 consists of a slide block 101, a connecting arm 102, a rotating shaft 103, an illumination lamp 84, and a retroreflection coefficient measuring instrument 85. The retroreflection coefficient measuring instrument 85 is installed on the right side of the box wall. The illumination lamp can adjust the incident angle of the illumination lamp through the rotating shaft and can emit parallel light of equal intensity, so that the light emitted by the illumination lamp is reflected into the retroreflection coefficient measuring instrument 85, and the retroreflection coefficient data is imported into the computer. The drainage device 4 consists of a drainage ditch 41, a drainage pipe 42, and a drainage pool 43. After the simulated rainfall test, it ensures that excess precipitation flows into the drainage pool through the drainage pipe.
[0028] In the above implementation examples, a water droplet device 6 is installed on the upper part of the test chamber, connected to the outer water supply tank 62 via a water inlet pipe 63. A valve 64 is installed in the middle of the pipe, and the water droplet device can be controlled by opening and closing the valve 64. The drip nozzle 65 in the water droplet device can adjust the size of the nozzle orifice to simulate the rainfall under different rainfall conditions. When simulating the impact of heavy rainfall on traffic road markings, the control ring 61 at the end of the nozzle is rotated to open all the drip nozzle orifices; when simulating the impact of light rainfall on traffic road markings, the control ring 61 at the end of the nozzle is rotated to close the central orifice, leaving the two smaller orifices on the sides open.
[0029] Furthermore, the test device for testing the reflectivity of traffic road markings is characterized by including a test chamber 1 with an openable left end, which allows for adjustment of the internal devices of the test chamber under different test conditions.
[0030] Furthermore, the test device for testing the reflectivity of traffic road markings is characterized in that the test chamber has a built-in slide rail 9. When testing the reflectivity of road markings against wheel friction, a friction device 10 is installed, and slide rail blocks and the device below are installed along the slide rail; when testing the intensity of light received by the retroreflection coefficient measuring instrument 85, a road marking light-sensing test device is installed, and slide rail blocks 101, connecting arms 102, rotating shafts 103 and illumination lamps 84 are installed along the slide rail.
[0031] Furthermore, the test chamber has a built-in thermometer 11, which can control the temperature of the test chamber when conducting alternating hot and cold tests.
[0032] Furthermore, the test chamber 1 is made of high-strength glass.
[0033] The specific work process is detailed below:
[0034] 1) Open test chamber 1, place asphalt sample 2, apply traffic road markings 33 to the asphalt sample, and let it stand until it can be tested.
[0035] 2) Open the test chamber 1, install the road marking light sensing test device 8 at the initial position of the slide rail, adjust the illumination lamp 84 and record the incident angle so that the light emitted is reflected into the retroreflection coefficient measuring instrument 85. Test 10 times according to the above steps to avoid accidental phenomena that may cause inaccurate test results. The tester will display the retroreflection coefficient value each time. The arithmetic mean v1 of the test results is taken as the standard value of the retroreflection coefficient of the traffic marking line.
[0036] 3) Conduct a friction test. Open the test chamber 1, install the friction device 10, and move the bottom simulated tire 104 on the asphalt sample 2 from one end of the test chamber to the other end. Repeat this process several times.
[0037] 4) Open the test chamber 1, install the mark light sensing test device 8 at the initial position of the slide rail 9, adjust the incident angle of the illumination lamp to be the same as the initial angle, so that the light emitted by it is reflected into the retroreflection coefficient measuring instrument. Test 10 times according to the above steps to avoid accidental phenomena that would make the test results inaccurate. The measuring instrument will display the retroreflection coefficient value each time, and the test result is taken as its arithmetic average a1.
[0038] 5) Conduct a wet-dry cycle test. Open the water drip device valve 64 to allow water to flow through the drip nozzle 65 onto the traffic markings on the asphalt sample. After a period of time, close the valve 64 and turn on the fan 72 of the air-cooling device to dry the traffic markings on the asphalt sample. Excess moisture from the asphalt sample is discharged through the drainage device 4. Repeat the above process several times.
[0039] 6) Open the test chamber 1, install the mark light sensing test device 8 at the initial position of the slide rail, adjust the illumination lamp 84 and record the incident angle so that the light emitted by it is reflected into the retroreflection coefficient measuring instrument 85. Test 10 times according to the above steps to avoid accidental phenomena that may cause inaccurate test results. The tester will display the retroreflection coefficient value each time, and the test result is taken as its arithmetic average a2.
[0040] 7) Conduct a hot and cold alternation test. Turn on the heating device 5, observe the thermometer 11 inside the test chamber, heat the inside of the test chamber to a certain temperature, then turn off the heating device and turn on the fan 72 of the air-cooling device to cool the traffic road markings on the asphalt sample back to their original temperature. Repeat the above process several times.
[0041] 8) Open the test chamber 1, install the mark light sensing test device 8 at the initial position of the slide rail, adjust the illumination lamp 84 and record the incident angle so that the light emitted by it is reflected into the retroreflection coefficient measuring instrument 85. Test 10 times according to the above steps to avoid accidental phenomena that may cause inaccurate test results. The tester will display the retroreflection coefficient value each time, and the test result is taken as its arithmetic average a3.
[0042] 9) Compare the test results a1, a2, a3 with the standard value v1 of the retroreflection coefficient of the traffic markings. If a1≥v1, it indicates that the traffic markings have good reflective performance under the friction environment simulation; if a2≥v1, it indicates that the traffic markings have good reflective performance under the dry and wet cycle environment simulation; if a3≥v1, it indicates that the traffic markings have good reflective performance under the cold and hot alternation environment simulation.
[0043] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.
Claims
1. A testing device for testing the reflectivity of traffic road markings, characterized in that, The test chamber includes a test chamber (1), an asphalt road sample (2) placed at the bottom of the test chamber, road reflective markings (3) painted on the road, a drainage device (4) on the side of the asphalt road, an environmental simulation device and a marking light-sensing test device (8) respectively on the top of the test chamber. The environmental simulation device includes a heating device (5), a cooling device (7), a water drop device (6) and a friction device (10). The heating device (5) is a heating metal box (52) with a built-in metal heating wire (51) installed on the right side wall of the test chamber. The cooling device (7) is a cooling box (71) with several built-in fans (72) installed on both sides of the upper wall of the asphalt road sample (2). The water drop device (6) consists of a water spray nozzle (65) on the top of the test chamber, a control ring (61), a water storage tank (66) on the top of the chamber, a water inlet pipe (63), a valve (64) and an outer water supply tank (62). The friction device (10) is mounted on the top of the test chamber. It consists of a slide block (101), a connecting arm (102), a rotating shaft (103), and a simulated tire (104). It is installed on the slide rail (9) as required. The marking light sensing test device (8) consists of a slide block (101), a connecting arm (102), a rotating shaft (103), an illumination lamp (84), and a retroreflection coefficient measuring instrument (85). The retroreflection coefficient measuring instrument (85) is installed on the right side of the chamber wall. The illumination lamp can adjust the incident angle of the illumination lamp through the rotating shaft and can emit parallel light of equal intensity. The light emitted by the illumination lamp is reflected and enters the retroreflection coefficient measuring instrument (85). The retroreflection coefficient data is imported into the computer. The drainage device (4) consists of a drainage ditch (41), a drainage pipe (42), and a drainage pool (43). After the simulated rainfall test, the excess precipitation is ensured to flow into the drainage pool through the drainage pipe.
2. The test apparatus for testing the reflectivity of traffic road markings according to claim 1, characterized in that, A water droplet device (6) is installed on the upper part of the test chamber and connected to the outer water supply tank (62) through the water inlet pipe (63). A valve (64) is provided in the middle of the pipe. The water droplet device can be switched on and off by controlling the valve (64). The water droplet nozzle (65) in the water droplet device can adjust the size of the nozzle hole to simulate the rainfall under different rainfall conditions.
3. The test apparatus for testing the reflectivity of traffic road markings according to claim 1, characterized in that, The test chamber (1) is openable on the left, which allows for adjustment of the internal devices of the test chamber under different test conditions.
4. The test apparatus for testing the reflectivity of traffic road markings according to claim 1, characterized in that, The test chamber has a built-in slide rail (9) for mounting friction devices or light-sensing testing devices.
5. The test apparatus for testing the reflectivity of traffic road markings according to claim 1, characterized in that, The test chamber has a built-in thermometer (11) which can control the temperature of the test chamber when conducting alternating hot and cold tests.
6. The test apparatus for testing the reflectivity of traffic road markings according to claim 1, characterized in that, The test chamber (1) is made of high-strength glass.