Dot-matrix displacement sensor for bridge

Abstract

The utility model relates to a dot matrix type displacement sensor for a bridge, which comprises a first bridge body, a second bridge body, an infrared dot matrix receiver and an infrared transmitter, an expansion joint is arranged between the first bridge body and the second bridge body, and a vehicle can run on the top end surfaces of the first bridge body and the second bridge body. The infrared dot matrix receiver is arranged on one side, facing the second bridge body, of the first bridge body, and the infrared dot matrix receiver is provided with a dot matrix area; the infrared emitter is arranged on the second bridge body and faces one side of the first bridge body, and light spots emitted by the infrared emitter face a preset position of the dot matrix area; when the light spots emitted by the infrared emitter displace relative to the preset position of the infrared dot matrix receiver, the dot matrix area monitors the displacement change of the expansion joint between the first bridge body and the second bridge body in real time according to the displacement of the light spots. Therefore, the real-time monitoring of the displacement of the bridge expansion joint is realized, the potential safety hazard is prevented in advance, the risk of misjudgment is reduced, and the accuracy and reliability of bridge monitoring are ensured.

Description

Technical Field

[0001] This application relates to the technical field of bridge construction, and particularly to a dot matrix displacement sensor for bridges. Background Technique

[0002] As an important infrastructure in the transportation system, bridges play a key role in bearing and distributing traffic loads. To accommodate the deformation of bridge structures caused by factors such as temperature changes, traffic loads, and concrete shrinkage, bridge expansion joints are usually set between adjacent bridge slabs. Bridge expansion joints are important components in bridge structures, and their function is to relieve the stress concentration caused by the relative displacement between different parts of the bridge by leaving a certain gap between the bridge slabs.

[0003] Bridge expansion joints are mostly set at the structurally weak parts of the beam ends. They not only need to bear the dynamic effects brought by vehicle loads but also withstand multiple influences from the natural environment, such as complex factors like temperature changes, wind and rain erosion, etc. Therefore, during the use of bridge expansion joints, displacement changes of varying degrees are extremely likely to occur. The existing bridge expansion joint detection technologies mainly rely on manual visual inspection or simple mechanical measuring tools, and this method has significant deficiencies in terms of accuracy, real-time performance, and reliability, resulting in difficulty in accurately judging the displacement state of the expansion joints and being unable to detect potential problems in a timely manner, which may thus lead to bridge safety hazards.

[0004] In response to the above problems, a dot matrix displacement sensor for bridges is proposed for the displacement detection of bridge expansion joints, to address the problems such as low accuracy, easy misjudgment, and poor real-time performance existing in the existing bridge expansion joint displacement monitoring methods, and it can monitor the displacement changes of bridge expansion joints in real time and accurately, so as to timely discover and handle potential structural problems, thereby ensuring the safe operation of the bridge and extending its service life. Utility Model Content

[0005] The purpose of this application is to overcome the deficiencies in the prior art and propose a dot matrix displacement sensor for bridges to address the problems such as low accuracy, easy misjudgment, and poor real-time performance existing in the existing bridge expansion joint displacement monitoring methods.

[0006] This application is achieved through the following technical solutions:

[0007] This application proposes a dot matrix displacement sensor for bridges, including a first bridge body and a second bridge body, with an expansion joint between the first bridge body and the second bridge body. Vehicles can travel on the top surfaces of the first bridge body and the second bridge body. The dot matrix displacement sensor for bridges further includes:

[0008] An infrared dot matrix receiver, provided on the first bridge body and facing the side of the second bridge body, and the infrared dot matrix receiver is provided with a dot matrix area;

[0009] An infrared emitter is provided on the second bridge body and faces one side of the first bridge body, and the light spot emitted by the infrared emitter faces a preset position in the dot matrix area;

[0010] When the light spot emitted by the infrared emitter is displaced relative to the preset position of the infrared dot matrix receiver, the dot matrix area monitors the displacement change of the expansion joint between the first bridge body and the second bridge body in real time according to the displacement of the light spot.

[0011] In an embodiment of the present application, one side of the first bridge body facing the second bridge body is defined as the first side surface, and the orientation of the dot matrix area forms a set angle with the vertical direction relative to the first side surface;

[0012] One side of the second bridge body facing the first bridge body is defined as the second side surface, and the light spot emitted by the infrared emitter forms a set angle with the vertical direction relative to the second side surface.

[0013] In an embodiment of the present application, when observing along the direction in which the infrared emitter emits a light spot towards the dot matrix area, the dot matrix area is composed of a plurality of receivers arranged at equal intervals in a matrix, and the edge of the dot matrix area includes a left position;

[0014] The first bridge body is defined as a first end portion and a second end portion, the positions of the first end portion and the second end portion are opposite, and the infrared dot matrix receiver is close to the first end portion;

[0015] The second bridge body is defined as a third end portion and a fourth end portion, the positions of the third end portion and the fourth end portion are opposite, the infrared emitter is close to the fourth end portion, the first end portion is adjacent to the third end portion, and the second end portion is adjacent to the fourth end portion;

[0016] When the light spot emitted by the infrared emitter is displaced relative to the preset position of the infrared dot matrix receiver towards the left position, one end of the second bridge body at the third end portion is separated from one end of the first bridge body at the first end portion, and / or one end of the second bridge body at the fourth end portion approaches one end of the first bridge body at the second end portion.

[0017] In an embodiment of the present application, when observing along the direction in which the infrared emitter emits a light spot towards the dot matrix area, the edge of the dot matrix area includes a right position;

[0018] When the light spot emitted by the infrared transmitter is displaced toward the right position relative to the preset position of the infrared dot matrix receiver, one end of the second bridge body at the third end portion is brought closer to one end of the first bridge body at the first end portion, and / or one end of the second bridge body at the fourth end portion is pulled apart from one end of the first bridge body at the second end portion.

[0019] In one embodiment of the present application, when observed along the direction in which the infrared emitter emits the light spot toward the dot matrix area, the edge of the dot matrix area includes an upper side position;

[0020] When the light spot emitted by the infrared transmitter is displaced toward the upper position relative to the preset position of the infrared dot matrix receiver, one end of the second bridge body at the third end is offset upward relative to one end of the first bridge body at the first end, and / or one end of the second bridge body at the fourth end is offset downward relative to one end of the first bridge body at the second end.

[0021] In one embodiment of the present application, when observed along the direction in which the infrared emitter emits the light spot toward the dot matrix area, the edge of the dot matrix area includes a lower side position;

[0022] When the light spot emitted by the infrared transmitter is displaced toward the lower position relative to the preset position of the infrared dot matrix receiver, one end of the second bridge body at the third end is offset downward relative to one end of the first bridge body at the first end, and / or one end of the second bridge body at the fourth end is offset upward relative to one end of the first bridge body at the second end.

[0023] In one embodiment of the present application, the first bridge body includes a first bridge plate and a first support portion, the first bridge plate is fixedly connected to the first support portion, and the second bridge body includes a second bridge plate and a second support portion, the second bridge plate is fixedly connected to the second support portion;

[0024] Vehicles can travel on the top surfaces of the first bridge deck and the second bridge deck;

[0025] An expansion joint is provided between the first bridge deck and the second bridge deck;

[0026] There is a distance between the first supporting part and the second supporting part, the first side surface is the side of the first supporting part facing the second supporting part, the second side surface is the side of the second supporting part facing the first supporting part, the infrared dot matrix receiver is arranged on the first supporting part, and the infrared transmitter is arranged on the second supporting part.

[0027] In one embodiment of the present application, the first supporting portion is provided with a wiring channel, and the wires of the controller are electrically connected to the infrared dot matrix receiver along the wiring channel.

[0028] In an embodiment of the present application, the wiring channel includes a first wiring groove, a second wiring groove, and a receiving groove. The first wiring groove is communicated with the second wiring groove, and the second wiring groove is communicated with the receiving groove. The infrared dot matrix receiver is arranged in the receiving groove, and the wires of the controller are electrically connected to the infrared dot matrix receiver through the first wiring groove and the second wiring groove in sequence.

[0029] In an embodiment of the present application, the dot matrix displacement sensor for a bridge further includes a battery. The battery is arranged in the receiving groove and is electrically connected to the infrared dot matrix receiver to supply power to the infrared dot matrix receiver.

[0030] Compared with the prior art, the beneficial effects of the present application are as follows:

[0031] The infrared dot matrix receiver is arranged on one side of the first bridge body and faces the second bridge body, and the infrared dot matrix receiver is provided with a dot matrix area; the infrared emitter is arranged on one side of the second bridge body and faces the first bridge body, and the light spot emitted by the infrared emitter faces a preset position in the dot matrix area. When the bridge undergoes displacement of the expansion joint due to temperature change, traffic load, or other environmental factors, the relative position between the first bridge body and the second bridge body will change. This change will cause the light spot emitted by the infrared emitter to be displaced relative to the preset position of the infrared dot matrix receiver. The infrared dot matrix receiver monitors the displacement change of the expansion joint between the first bridge body and the second bridge body in real time according to the displacement of the light spot, and feeds back this displacement information to the monitoring system, thereby realizing real-time monitoring of the displacement of the bridge expansion joint, preventing potential safety hazards in advance, reducing the risk of misjudgment, and ensuring the accuracy and reliability of bridge monitoring.

[0032] Other features and advantages of the present application will be described in the subsequent description, and some of them will be obvious from the description or can be understood by implementing the present application. The objectives and other advantages of the present application can be achieved and obtained through the structures pointed out in the description, claims, and drawings. Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a three-dimensional view of the dot matrix displacement sensor for a bridge provided by an embodiment of the present application;

[0035] Figure 2Stereogram of the dot matrix displacement sensor for bridges provided by an embodiment of the present application;

[0036] Figure 3 Side view of the dot matrix displacement sensor for bridges provided by an embodiment of the present application;

[0037] Figure 4 is Figure 3 Cross-sectional view of the P-P part of;

[0038] Figure 5 Top view of the infrared dot matrix receiver and infrared emitter provided by an embodiment of the present application;

[0039] Figure 6 Front view of the dot matrix area of the infrared dot matrix receiver provided by an embodiment of the present application.

[0040] Explanation of reference numerals:

[0041] 10. Dot matrix displacement sensor for bridges; 100. First bridge body; 110. Infrared dot matrix receiver; 111. Dot matrix area; 111w. Left position; 111e. Right position; 111n. Upper position; 111s. Lower position; 120. First end; 130. Second end; 140. First bridge plate; 150. First support part; 151. First side; 160. Wiring channel; 161. First wiring groove; 162. Second wiring groove; 163. Accommodation groove; 170. Battery; 200. Second bridge body; 210. Infrared emitter; 220. Third end; 230. Fourth end; 240. Second bridge plate; 250. Second support part; 251. Second side; 300. Expansion joint. Detailed implementation manners

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0043] To enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0044] It should be noted that when an element is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly disposed on the other component; when a component is referred to as "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0045] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality of" and "several" is two or more, unless otherwise specifically defined.

[0047] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the implementable conditions of the present application. Therefore, they do not have a technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the efficacy and purpose that the present application can achieve, should still fall within the scope that the technical content disclosed in the present application can cover.

[0048] Please refer to Figures 1 to 6, this application proposes a dot matrix displacement sensor 10 for bridges, which includes a first bridge body 100 and a second bridge body 200. There is an expansion joint 300 between the first bridge body 100 and the second bridge body 200. Vehicles can drive on the top surfaces of the first bridge body 100 and the second bridge body 200. The dot matrix displacement sensor 10 for bridges further includes an infrared dot matrix receiver 110 and an infrared emitter 210. The infrared dot matrix receiver 110 is arranged on the first bridge body 100 and faces the side of the second bridge body 200. The infrared dot matrix receiver 110 is provided with a dot matrix area 111; the infrared emitter 210 is arranged on the second bridge body 200 and faces the side of the first bridge body 100. The light spot emitted by the infrared emitter 210 faces a preset position in the dot matrix area 111; when the light spot emitted by the infrared emitter 210 is displaced relative to the preset position of the infrared dot matrix receiver 110, the infrared dot matrix receiver 110 monitors the displacement change of the expansion joint 300 between the first bridge body 100 and the second bridge body 200 in real time according to the displacement of the light spot.

[0049] Specifically, the infrared dot matrix receiver 110 is arranged on the first bridge body 100 and faces the side of the second bridge body 200. The infrared dot matrix receiver 110 is provided with a dot matrix area 111, which can accurately locate the position of the light spot; the infrared emitter 210 is arranged on the second bridge body 200 and faces the side of the first bridge body 100. The light spot emitted by the infrared emitter 210 faces a preset position in the dot matrix area 111. When the bridge undergoes displacement of the expansion joint 300 due to temperature changes, traffic loads or other environmental factors, the relative positions between the first bridge body 100 and the second bridge body 200 will change. This change will cause the position of the light spot of the infrared emitter 210 to shift on the infrared dot matrix receiver 110. Therefore, when the light spot emitted by the infrared emitter 210 is displaced relative to the preset position of the infrared dot matrix receiver 110, the infrared dot matrix receiver 110 monitors the displacement change of the expansion joint 300 between the first bridge body 100 and the second bridge body 200 in real time according to the displacement of the light spot. By the dot matrix area 111 of the infrared dot matrix receiver 110, the displacement of the light spot relative to the preset position is sensed in real time, and this displacement information is fed back to the monitoring system, thereby realizing the real-time monitoring of the displacement of the bridge expansion joint 300. The real-time performance is strong, potential structural problems can be detected in time, and potential safety hazards can be prevented in advance. Through automated monitoring, the interference of human factors is reduced, the risk of misjudgment is lowered, and the accuracy and reliability of bridge monitoring are ensured.

[0050] Please refer to Figures 2 to 4, in one embodiment, the side of the first bridge body 100 facing the second bridge body 200 is defined as the first side surface 151, and the orientation of the dot matrix area 111 forms a set angle with the vertical direction relative to the first side surface 151; the side of the second bridge body 200 facing the first bridge body 100 is defined as the second side surface 251, and the light spot emitted by the infrared emitter 210 forms a set angle with the vertical direction relative to the second side surface 251.

[0051] Specifically, the side of the first bridge body 100 facing the second bridge body 200 is defined as the first side surface 151, and the orientation of the dot matrix area 111 forms a set angle with the vertical direction relative to the first side surface 151, rather than being perpendicular. Similarly, the side of the second bridge body 200 facing the first bridge body 100 is defined as the second side surface 251, and the light spot emitted by the infrared emitter 210 also forms a set angle with the vertical direction relative to the second side surface 251. The design purpose is to ensure that when the expansion joint 300 between the first bridge body 100 and the second bridge body 200 undergoes displacement, the light spot of the infrared emitter 210 can more sensitively detect the position change within the dot matrix area 111 of the infrared dot matrix receiver 110. This non-perpendicular installation angle can better adapt to the complex displacements caused by the bridge under different conditions (such as stretching, compression, vertical displacement, etc.), thereby improving the detection sensitivity and accuracy.

[0052] It should be noted that the non-perpendicular angles at which the infrared dot matrix receiver 110 and the infrared emitter 210 are respectively installed on the first bridge body 100 and the second bridge body 200 are considered based on the complexity of the bridge structure displacement. During the actual use of the bridge, due to factors such as temperature changes and load fluctuations, the displacement of the expansion joint 300 may exhibit complex changes in multiple directions. If the traditional vertical installation method is adopted, it may not be able to accurately capture all directions or minute changes in the displacement, thus affecting the detection accuracy.

[0053] Please refer to Figures 4 to 6 , in one embodiment, when observing along the direction in which the infrared emitter 210 emits a light spot towards the dot matrix area 111, the dot matrix area 111 is composed of multiple receivers arranged in a matrix at equal intervals, and the edge of the dot matrix area 111 includes the left side position 111w;

[0054] The first bridge body 100 is defined as the first end portion 120 and the second end portion 130, the positions of the first end portion 120 and the second end portion 130 are opposite, and the infrared dot matrix receiver 110 is close to the first end portion 120;

[0055] The second bridge body 200 is defined as the third end portion 220 and the fourth end portion 230, the positions of the third end portion 220 and the fourth end portion 230 are opposite, the infrared emitter 210 is close to the fourth end portion 230, the first end portion 120 is adjacent to the third end portion 220, and the second end portion 130 is adjacent to the fourth end portion 230;

[0056] When the light spot emitted by the infrared transmitter 210 is displaced toward the left position 111w relative to the preset position of the infrared dot matrix receiver 110, the second bridge body 200 at one end of the third end 220 is pulled apart from the first bridge body 100 at one end of the first end 120, and / or the second bridge body 200 at one end of the fourth end 230 is brought together with the first bridge body 100 at one end of the second end 130.

[0057] Specifically, the infrared transmitter 210 and the infrared dot matrix receiver 110 are respectively installed on the first bridge body 100 and the second bridge body 200, and the position change of the infrared light spot is captured by setting a dot matrix area 111 composed of a plurality of small receivers arranged at equal intervals. These small receivers are arranged in a matrix to form a complete sensing area, ensuring that the movement trajectory of the light spot can be fully covered in the entire area, and can respond sensitively to any small displacement of the light spot. The design of the dot matrix area 111 enables the system to accurately sense the displacement of the light spot in any direction.

[0058] When the bridge (the first bridge body 100 and / or the second bridge body 200) is displaced due to external factors such as temperature changes or vehicle loads, the position of the light spot in the dot matrix area 111 will change, and the infrared dot matrix receiver 110 can capture these changes in real time and provide timely feedback to ensure the accuracy and reliability of the monitoring data. For example, when the light spot emitted by the infrared transmitter 210 is displaced to the left position 111w relative to the preset position of the infrared dot matrix receiver 110, three situations will occur, namely:

[0059] The second bridge body 200 is pulled apart at one end of the third end portion 220 from the first bridge body 100 at one end of the first end portion 120;

[0060] One end of the second bridge body 200 at the fourth end 230 is close to one end of the first bridge body 100 at the second end 130;

[0061] The second bridge body 200 is separated from the first bridge body 100 at one end of the first end 120 at one end of the third end 220 and is brought close to the first bridge body 100 at one end of the second end 130 at one end of the fourth end 230 .

[0062] Please refer to Figures 4 to 6 In one embodiment, when observing along the direction in which the infrared emitter 210 emits the light spot toward the dot matrix area 111, the edge of the dot matrix area 111 includes the right position 111e;

[0063] When the light spot emitted by the infrared emitter 210 is displaced to the right position 111e relative to the preset position of the infrared dot matrix receiver 110, one end of the second bridge 200 at the third end 220 approaches one end of the first bridge 100 at the first end 120, and / or one end of the second bridge 200 at the fourth end 230 moves away from one end of the first bridge 100 at the second end 130.

[0064] Specifically, when the bridge (the first bridge 100 and / or the second bridge 200) is displaced due to external factors such as temperature changes or vehicle loads, the position of the light spot in the dot matrix area 111 will change. The infrared dot matrix receiver 110 can capture these changes in real time and provide timely feedback to ensure the accuracy and reliability of the monitoring data. For example, when the light spot emitted by the infrared emitter 210 is displaced to the right position 111e relative to the preset position of the infrared dot matrix receiver 110, there will be three situations, namely:

[0065] One end of the second bridge 200 at the third end 220 approaches one end of the first bridge 100 at the first end 120;

[0066] One end of the second bridge 200 at the fourth end 230 moves away from one end of the first bridge 100 at the second end 130;

[0067] One end of the second bridge 200 at the third end 220 approaches one end of the first bridge 100 at the first end 120 and one end of the second bridge 200 at the fourth end 230 moves away from one end of the first bridge 100 at the second end 130.

[0068] Please refer to Figures 4 to 6 , in an embodiment, when observing in the direction of the light spot emitted by the infrared emitter 210 towards the dot matrix area 111, the edge of the dot matrix area 111 includes the upper position 111n;

[0069] When the light spot emitted by the infrared emitter 210 is displaced to the upper position 111n relative to the preset position of the infrared dot matrix receiver 110, one end of the second bridge 200 at the third end 220 is offset upward relative to one end of the first bridge 100 at the first end 120, and / or one end of the second bridge 200 at the fourth end 230 is offset downward relative to one end of the first bridge 100 at the second end 130.

[0070] Specifically, when the bridge (the first bridge body 100 and / or the second bridge body 200) undergoes displacement due to external factors such as temperature changes or vehicle loads, the position of the light spot in the dot matrix area 111 will change. The infrared dot matrix receiver 110 can capture these changes in real time and provide timely feedback to ensure the accuracy and reliability of the monitoring data. For example, when the light spot emitted by the infrared emitter 210 displaces upward to the upper side position 111n relative to the preset position of the infrared dot matrix receiver 110, three situations will occur, which are respectively:

[0071] One end of the second bridge body 200 at the third end 220 is offset upward relative to one end of the first bridge body 100 at the first end 120;

[0072] One end of the second bridge body 200 at the fourth end 230 is offset downward relative to one end of the first bridge body 100 at the second end 130;

[0073] One end of the second bridge body 200 at the third end 220 is offset upward relative to one end of the first bridge body 100 at the first end 120, and one end of the second bridge body 200 at the fourth end 230 is offset downward relative to one end of the first bridge body 100 at the second end 130.

[0074] Please refer to Figures 4 to 6 , in an embodiment, when observing along the direction in which the infrared emitter 210 emits the light spot towards the dot matrix area 111, the edge of the dot matrix area 111 includes the lower side position 111s;

[0075] When the light spot emitted by the infrared emitter 210 displaces downward to the lower side position 111s relative to the preset position of the infrared dot matrix receiver 110, one end of the second bridge body 200 at the third end 220 is offset downward relative to one end of the first bridge body 100 at the first end 120, and / or one end of the second bridge body 200 at the fourth end 230 is offset upward relative to one end of the first bridge body 100 at the second end 130.

[0076] Specifically, when the bridge (the first bridge body 100 and / or the second bridge body 200) undergoes displacement due to external factors such as temperature changes or vehicle loads, the position of the light spot in the dot matrix area 111 will change. The infrared dot matrix receiver 110 can capture these changes in real time and provide timely feedback to ensure the accuracy and reliability of the monitoring data. For example, when the light spot emitted by the infrared emitter 210 displaces downward to the lower side position 111s relative to the preset position of the infrared dot matrix receiver 110, three situations will occur, which are respectively:

[0077] One end of the second bridge body 200 at the third end 220 is offset downward relative to one end of the first bridge body 100 at the first end 120;

[0078] The second bridge body 200 is upwardly offset at one end of the fourth end portion 230 relative to one end of the first bridge body 100 at the second end portion 130;

[0079] The second bridge body 200 is downwardly offset at one end of the third end portion 220 relative to one end of the first bridge body 100 at the first end portion 120 and the second bridge body 200 is upwardly offset at one end of the fourth end portion 230 relative to one end of the first bridge body 100 at the second end portion 130.

[0080] In summary, in combination with the comprehensive monitoring of the left position 111w, the right position 111e, the upper position 111n, and the lower position 111s, the infrared emitter 210 and the infrared dot matrix receiver 110 can provide more complete and reliable displacement monitoring data. Whether it is the horizontal displacement or the vertical displacement of the first bridge body 100 or the second bridge body 200, through timely sensing and feedback of various displacement changes of the bridge structure, they can be monitored by the system in real time, significantly improving the accuracy and safety of bridge monitoring.

[0081] Please refer to Figures 1 to 4 , in an embodiment, the first bridge body 100 includes a first bridge plate 140 and a first support portion 150, the first bridge plate 140 is fixedly connected to the first support portion 150, the second bridge body 200 includes a second bridge plate 240 and a second support portion 250, the second bridge plate 240 is fixedly connected to the second support portion 250; vehicles can travel on the top surfaces of the first bridge plate 140 and the second bridge plate 240; there is an expansion joint 300 between the first bridge plate 140 and the second bridge plate 240; there is a spacing between the first support portion 150 and the second support portion 250, the first side surface 151 is the side of the first support portion 150 facing the second support portion 250, the second side surface 251 is the side of the second support portion 250 facing the first support portion 150, the infrared dot matrix receiver 110 is provided on the first support portion 150, and the infrared emitter 210 is provided on the second support portion 250.

[0082] Specifically, in the actual application of the bridge, vehicles can travel on the top surfaces of the first bridge plate 140 and the second bridge plate 240. The bridge plate bears the traffic load and is the main load-bearing structure of the bridge, while the support portion provides the necessary stability and support for the bridge plate.

[0083] There is a certain distance between the first support part 150 and the second support part 250, and this distance is exactly below the position where the bridge expansion joint 300 is located, that is, below the position of the expansion joint 300 between the first bridge body 100 and the second bridge body 200. In order to effectively monitor the expansion joint 300, the infrared dot matrix receiver 110 is installed on the side of the first support part 150 facing the second support part 250, which is called the first side 151, and the orientation of the dot matrix area 111 forms a set angle with the vertical direction relative to the first side 151. Similarly, the infrared emitter 210 is installed on the side of the second support part 250 facing the first support part 150, which is called the second side 251, and the light spot emitted by the infrared emitter 210 forms a set angle with the vertical direction relative to the second side 251. Such an installation method ensures that the light spot of the infrared emitter 210 can directly aim at the preset position of the dot matrix area 111 of the infrared dot matrix receiver 110, so as to realize the real-time monitoring of the displacement of the bridge expansion joint 300.

[0084] Please refer to Figure 3 and Figure 4 , in an embodiment, the first support part 150 is provided with a wire routing channel 160, and the wires of the controller (not marked in the figure) are electrically connected to the infrared dot matrix receiver 110 along the wire routing channel 160.

[0085] Specifically, the wire routing channel 160 is specifically used to accommodate the wires between the controller and the infrared dot matrix receiver 110, ensuring that the wires can be safely and neatly arranged in the support structure. The design of the wire routing channel 160 can prevent the wires from being damaged due to the influence of the external environment (such as wind, rain, vibration, etc.), and also avoid the potential safety hazards caused by the exposure of the wires. The wire routing channel 160 includes a first wire groove 161, a second wire groove 162 and a receiving groove 163. The first wire groove 161 is communicated with the second wire groove 162, and the second wire groove 162 is communicated with the receiving groove 163. The infrared dot matrix receiver 110 is arranged in the receiving groove 163, and the wires of the controller are electrically connected to the infrared dot matrix receiver 110 through the first wire groove 161 and the second wire groove 162 in sequence. The dot matrix displacement sensor 10 for the bridge further includes a battery 170. The battery 170 is arranged in the receiving groove 163 and is electrically connected to the infrared dot matrix receiver 110 to supply power to the infrared dot matrix receiver 110.

[0086] In another embodiment, the second support part 250 is also provided with a wire routing channel 160 similar to that of the first support part 150, and the wires of the controller are electrically connected to the infrared emitter 210 along the wire routing channel 160. The specific technical solution is the same as that of the wire routing channel 160 of the first support part 150, so it will not be described in detail here.

[0087] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dot matrix displacement sensor for a bridge, comprising a first bridge body and a second bridge body, wherein an expansion joint is provided between the first bridge body and the second bridge body, and a vehicle can travel on the top end surfaces of the first bridge body and the second bridge body, characterized in that: The dot matrix displacement sensor for a bridge also includes: An infrared dot matrix receiver is arranged on a side of the first bridge body and facing the second bridge body, and the infrared dot matrix receiver is provided with a dot matrix area; An infrared emitter is disposed on a side of the second bridge body and facing the first bridge body, and a light spot emitted by the infrared emitter faces a preset position of the dot matrix area; When the light spot emitted by the infrared transmitter is displaced relative to the preset position of the infrared dot matrix receiver, the dot matrix area monitors the displacement change of the expansion joint between the first bridge body and the second bridge body in real time according to the displacement of the light spot.

2. The dot matrix displacement sensor for bridges according to claim 1, characterized in that: A side of the first bridge body facing the second bridge body is defined as a first side surface, and the orientation of the dot matrix area forms a set angle with respect to the first side surface and a vertical direction; The side of the second bridge body facing the first bridge body is defined as a second side surface, and the light spot emitted by the infrared emitter forms a set angle with respect to the second side surface and a vertical direction.

3. The dot matrix displacement sensor for bridges according to claim 2, characterized in that: Observing along the direction in which the infrared transmitter emits a light spot toward the dot matrix area, the dot matrix area is composed of a plurality of receivers arranged at equal intervals in a matrix, and the edge of the dot matrix area includes the left position; The first bridge body is defined as a first end and a second end, the first end is located opposite to the second end, and the infrared dot matrix receiver is close to the first end; The second bridge body is defined as a third end and a fourth end, the position of the third end is opposite to the position of the fourth end, the infrared emitter is close to the fourth end, the first end is adjacent to the third end, and the second end is adjacent to the fourth end; When the light spot emitted by the infrared transmitter is displaced toward the left position relative to the preset position of the infrared dot matrix receiver, one end of the second bridge body at the third end is pulled apart from one end of the first bridge body at the first end, and / or one end of the second bridge body at the fourth end is brought together with one end of the first bridge body at the second end.

4. The dot matrix displacement sensor for bridges as claimed in claim 3, characterized in that: Observing along the direction in which the infrared emitter emits the light spot toward the dot matrix area, the edge of the dot matrix area includes the right side position; When the light spot emitted by the infrared transmitter is displaced toward the right position relative to the preset position of the infrared dot matrix receiver, one end of the second bridge body at the third end portion is brought closer to one end of the first bridge body at the first end portion, and / or one end of the second bridge body at the fourth end portion is pulled apart from one end of the first bridge body at the second end portion.

5. The dot matrix displacement sensor for bridges as claimed in claim 3, characterized in that: Observing along the direction in which the infrared emitter emits the light spot toward the dot matrix area, the edge of the dot matrix area includes an upper side position; When the light spot emitted by the infrared transmitter is displaced toward the upper position relative to the preset position of the infrared dot matrix receiver, one end of the second bridge body at the third end is offset upward relative to one end of the first bridge body at the first end, and / or one end of the second bridge body at the fourth end is offset downward relative to one end of the first bridge body at the second end.

6. The dot matrix displacement sensor for bridges as claimed in claim 3, characterized in that: Observing along the direction in which the infrared emitter emits the light spot toward the dot matrix area, the edge of the dot matrix area includes the lower side position; When the light spot emitted by the infrared transmitter is displaced toward the lower position relative to the preset position of the infrared dot matrix receiver, one end of the second bridge body at the third end is offset downward relative to one end of the first bridge body at the first end, and / or one end of the second bridge body at the fourth end is offset upward relative to one end of the first bridge body at the second end.

7. The dot matrix displacement sensor for bridges according to claim 2, characterized in that: The first bridge body includes a first bridge plate and a first support portion, the first bridge plate is fixedly connected to the first support portion, and the second bridge body includes a second bridge plate and a second support portion, the second bridge plate is fixedly connected to the second support portion; Vehicles can travel on the top surfaces of the first bridge deck and the second bridge deck; An expansion joint is provided between the first bridge deck and the second bridge deck; There is a distance between the first supporting part and the second supporting part, the first side surface is the side of the first supporting part facing the second supporting part, the second side surface is the side of the second supporting part facing the first supporting part, the infrared dot matrix receiver is arranged on the first supporting part, and the infrared transmitter is arranged on the second supporting part.

8. The matrix displacement sensor for bridges according to claim 7, characterized in that: The first supporting portion is provided with a wiring channel, and the wires of the controller are electrically connected to the infrared dot matrix receiver along the wiring channel.

9. The dot matrix displacement sensor for bridges according to claim 8, characterized in that: The wiring channel includes a first wiring groove, a second wiring groove and a receiving groove, the first wiring groove is connected to the second wiring groove, the second wiring groove is connected to the receiving groove, the infrared dot matrix receiver is arranged in the receiving groove, and the wires of the controller are electrically connected to the infrared dot matrix receiver through the first wiring groove, the second wiring groove in sequence.

10. The matrix displacement sensor for bridges according to claim 9, characterized in that: The dot matrix displacement sensor for a bridge further comprises a battery, wherein the battery is disposed in the receiving groove and the battery is electrically connected to the infrared dot matrix receiver to supply power to the infrared dot matrix receiver.

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