Laser measuring device for road engineering measurement

Abstract

The utility model provides a laser measuring device for road engineering measurement. The laser measuring device comprises a laser detection device and a data terminal which are connected in sequence, the laser detection device comprises a laser detection unit, an inclination detection unit and a vibration detection unit; the laser detection unit comprises a laser emission module, a laser receiving module, a time measurement module and a data processing control module which are connected in sequence; the data processing module comprises a microprocessor, a positioner, an A / D converter, a comparator, a wireless communication unit and a power supply module; the microprocessor is electrically connected with the positioner, the A / D converter, the comparator, the wireless communication unit and the power supply module; the inclination detection unit and the vibration detection unit are connected with the microprocessor through the A / D converter. According to the bridge deformation detection device, the deformation condition of a bridge is detected through the laser detection unit, the inclination detection unit and the vibration detection unit, high-precision real-time detection is achieved, and the device is safe, reliable, wide in application prospect and high in intelligent degree.

Description

Technical Field

[0001] The utility model belongs to the technical field of measurement, in particular to a laser measuring device for road engineering measurement. Background Art

[0002] The construction of transportation has always been accompanied by China's economic and urbanization development, among which infrastructure is the basic guarantee of transportation. Among the infrastructure, bridges, as the link between cities and villages, across rivers and mountains, play a key role in connecting regions, promoting logistics, supporting economic growth and improving the quality of life of residents.

[0003] With the increase of traffic load, bridges will have various health problems and deformation, which will directly affect the inclination of bridge piers, bending of spans, settlement of road surface, etc. If not discovered in time, it may cause huge economic losses. Therefore, in order to ensure the safety of bridges, it is necessary to regularly detect the deformation and health of bridges. Most of the existing detection methods require manual operation, with low intelligence and low work efficiency. Summary of the invention

[0004] In view of this, the utility model aims to overcome the shortcomings of the above-mentioned problems in the prior art and proposes a laser measuring device for road engineering measurement to realize automatic detection of bridges and reduce the occurrence of dangers.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A laser measuring device for road engineering measurement, comprising a laser detection device and a data terminal connected in sequence;

[0007] The laser detection device includes a laser detection unit, a tilt detection unit, and a vibration detection unit. The laser detection unit is arranged on the upper part of the side pier of the bridge to measure the displacement change of each pier of the bridge. The tilt detection unit is arranged on the top of the main bridge tower and the bridge support column to measure the tilt angle of the bridge. The vibration detection unit is arranged at the bottom of the main beam of the bridge to detect vibration caused by external factors.

[0008] The laser detection unit includes a laser emission module, a laser receiving module, a time measurement module, and a data processing control module which are connected in sequence;

[0009] The data processing module includes a microprocessor, a locator, an A / D converter, a comparator, a wireless communication unit, a power module, and an interface module; the microprocessor is electrically connected to the locator, the A / D converter, the comparator, the wireless communication unit, the power module, and the interface module;

[0010] The tilt detection unit and the vibration detection unit are both connected to the microprocessor via an A / D converter.

[0011] Furthermore, the laser emitting unit includes a laser diode and a voltage stabilizing circuit.

[0012] Furthermore, the laser receiving unit includes a photodiode, an amplifying circuit, and a shaping circuit connected in sequence.

[0013] Furthermore, a temperature acquisition unit is provided in the laser detection device for collecting temperature data of the bridge environment, and the temperature acquisition unit is connected to a microprocessor.

[0014] Furthermore, the laser detection device is connected to a data terminal via a wireless communication unit.

[0015] Furthermore, the data terminal includes a host computer, a smart phone and a server.

[0016] Furthermore, an alarm is provided in the data terminal.

[0017] Furthermore, the microprocessor is a single chip microcomputer.

[0018] Compared with the prior art, the laser measuring device for road engineering measurement described in the utility model has the following advantages:

[0019] The utility model detects the deformation of the bridge through a laser detection unit, a tilt detection unit, and a vibration detection unit, thereby realizing high-precision real-time detection. The device is safe and reliable, has broad application prospects, is highly intelligent, and has high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of a laser measuring device for road engineering measurement according to the utility model;

[0022] Figure 2 It is a circuit diagram of the laser emitting unit of the utility model;

[0023] Figure 3 This is a schematic diagram of a shaping circuit of the utility model.

[0024] Description of Reference Numerals

[0025] 1-laser detection unit; 2-tilt detection unit; 3-vibration detection unit; 4-temperature acquisition unit; 5-A / D converter; 6-microprocessor; 7-locator; 8-wireless communication unit; 9-comparator; 10-power module; 11-interface module; 12-data terminal; 13-alarm. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0027] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0030] like Figure 1 As shown, the utility model provides a laser measuring device for road engineering measurement, including a laser detection device and a data terminal connected in sequence;

[0031] The laser detection device includes a laser detection unit 1, a tilt detection unit 2, and a vibration detection unit 3. The laser detection unit 1 is arranged on the upper part of the side pier of the bridge, and is used to measure the displacement change of each pier of the bridge. The tilt detection unit 2 is arranged on the top of the main bridge tower and the bridge support column, and is used to measure the tilt angle of the bridge. The vibration detection unit 3 is arranged at the bottom of the main beam of the bridge, and is used to detect vibration caused by external factors such as wind load and vehicle passing.

[0032] The laser detection unit 1 includes a laser emission module, a laser receiving module, a time measurement module, and a data processing control module which are connected in sequence;

[0033] The data processing module includes a microprocessor 6, a locator 7, an A / D converter 5, a comparator 9, a wireless communication unit 8, a power module 10, and an interface module 11; the microprocessor 6 is electrically connected to the locator 7, the A / D converter 5, the comparator 9, the wireless communication unit 8, the power module 10, and the interface module 11;

[0034] The tilt detection unit 2 and the vibration detection unit 3 are both connected to the microprocessor 6 via an A / D converter 5, wherein the tilt detection unit is a tilt sensor including an accelerometer, a gyroscope, etc., and the vibration detection unit is a vibration sensor. The vibration sensor can detect instantaneous vibration conditions by monitoring the displacement of the bridge caused by external vibration, and then transmit these data to the data terminal 12.

[0035] like Figure 2 As shown, the laser emitting unit includes a laser diode and a voltage stabilizing circuit. The voltage stabilizing circuit adopts an LP2985 voltage stabilizer. When the laser emitting unit is working, a 3.3V voltage is provided by the outside world, which is converted into a 3V voltage that can drive a semiconductor laser diode through the LP2985 voltage stabilizer to emit laser pulses.

[0036] Specifically, the laser receiving unit includes a photodiode, an amplifying circuit, and a shaping circuit connected in sequence. After the photodiode receives the laser pulse signal, a current is generated, which needs to be converted into a voltage signal and transmitted to the time measurement module (timing chip). An operational amplifier is required. The operational amplifier type used in the utility model is AD8631. The shaping circuit is used to convert the detected signal into a pulse signal, which can trigger an interrupt of the pulse signal and stop the time measurement module (timing chip) from counting. The shaping circuit is as follows Figure 3 shown.

[0037] Specifically, the laser detection device is further provided with a temperature acquisition unit 4 for acquiring temperature data of the bridge environment. The temperature acquisition unit 4 is connected to a microprocessor 6 .

[0038] Specifically, the laser detection device is connected to the data terminal 12 via the wireless communication unit 8 .

[0039] Specifically, the data terminal 12 includes a host computer, a smart phone and a server.

[0040] Specifically, the data terminal 12 is provided with an alarm 13 .

[0041] Specifically, the microprocessor 6 is a single chip microcomputer.

[0042] When the utility model is working, the laser detection unit 1 is used to measure the displacement change of each pier of the bridge, the tilt detection unit 2 is used to measure the tilt angle of the bridge, and the vibration detection unit 3 is used to detect the vibration caused by external factors, and the data is sent to the microprocessor 6. The microprocessor 6 compares the received data with the preset threshold value through the comparator 9, and sends the comparison result to the data terminal 12. When the data exceeds the preset threshold value, the data terminal 12 generates an alarm message through the alarm 13 to give an alarm reminder, and timely locates and sends the abnormal position information through the position information sent by the locator, so as to facilitate the staff to quickly handle it.

[0043] When the utility model is working, the temperature data of the bridge environment is detected by the temperature acquisition unit 4, and sent to the microprocessor 6. On the one hand, the microprocessor 6 compares the received data with the preset threshold value through the comparator 9, and sends the comparison result to the data terminal 12. When the data exceeds the preset threshold value, the data terminal 12 generates an alarm message through the alarm 13 to give an alarm reminder; on the other hand, the microprocessor 6 also determines whether the temperature difference value within the set time exceeds the set threshold value through the comparator 9, and sends the result to the data terminal 12. When the result exceeds the preset threshold value, the data terminal 12 generates an alarm message through the alarm 13 to give an alarm reminder. The utility model determines the severe weather conditions by judging whether the ambient temperature is too high, too low, and whether the temperature difference is large. Severe weather can easily cause deformation of the bridge, and it is necessary to notify the maintenance personnel to conduct timely inspections.

[0044] All matters not mentioned above are prior art.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser measuring device for road engineering measurement, characterized in that: It includes a laser detection device and a data terminal connected in sequence; The laser detection device comprises a laser detection unit (1), a tilt detection unit (2), and a vibration detection unit (3); the laser detection unit (1) is arranged on the upper part of the side pier of the bridge and is used to measure the displacement change of each pier of the bridge; the tilt detection unit (2) is arranged on the top of the main bridge tower and the bridge support column and is used to measure the tilt angle of the bridge; the vibration detection unit (3) is arranged at the bottom of the main beam of the bridge and is used to detect vibration caused by external factors; The laser detection unit (1) comprises a laser emission module, a laser receiving module, a time measurement module, and a data processing control module which are connected in sequence; The data processing control module comprises a microprocessor (6), a locator (7), an A / D converter (5), a comparator (9), a wireless communication unit (8), a power module (10), and an interface module (11); the microprocessor (6) is electrically connected to the locator (7), the A / D converter (5), the comparator (9), the wireless communication unit (8), the power module (10), and the interface module (11); The tilt detection unit (2) and the vibration detection unit (3) are both connected to a microprocessor (6) via an A / D converter (5).

2. A laser measuring device for road engineering measurement according to claim 1, characterized in that: The laser emission module includes a laser diode and a voltage stabilizing circuit.

3. A laser measuring device for road engineering measurement according to claim 1, characterized in that: The laser receiving module comprises a photodiode, an amplifying circuit, and a shaping circuit which are connected in sequence.

4. A laser measuring device for road engineering surveying according to claim 1, characterized in that: A temperature acquisition unit (4) is also provided in the laser detection device for collecting temperature data of the bridge environment; the temperature acquisition unit (4) is connected to a microprocessor (6).

5. The laser measuring device for road engineering survey according to claim 1, characterized in that: The laser detection device is connected to a data terminal (12) via a wireless communication unit (8).

6. A laser measuring device for road engineering surveying according to claim 5, characterized in that: The data terminal (12) comprises a host computer, a smart phone and a server.

7. A laser measuring device for road engineering surveying according to claim 5, characterized in that: An alarm (13) is provided inside the data terminal (12).

8. The laser measuring device for road engineering survey according to claim 1, characterized in that: The microprocessor (6) is a single chip microcomputer.

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