CN117233008A - Rigidity detection device of highway guardrail - Google Patents
Rigidity detection device of highway guardrail Download PDFInfo
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- CN117233008A CN117233008A CN202311487255.0A CN202311487255A CN117233008A CN 117233008 A CN117233008 A CN 117233008A CN 202311487255 A CN202311487255 A CN 202311487255A CN 117233008 A CN117233008 A CN 117233008A
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- 238000001514 detection method Methods 0.000 title claims abstract description 44
- 230000005489 elastic deformation Effects 0.000 claims abstract description 47
- 238000012545 processing Methods 0.000 claims abstract description 15
- 238000013500 data storage Methods 0.000 claims abstract description 11
- 230000005284 excitation Effects 0.000 claims abstract description 6
- 238000012360 testing method Methods 0.000 claims abstract description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 20
- 230000001133 acceleration Effects 0.000 claims description 8
- 230000000087 stabilizing effect Effects 0.000 claims description 7
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- 238000000034 method Methods 0.000 description 4
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- 238000009659 non-destructive testing Methods 0.000 description 2
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- 230000008569 process Effects 0.000 description 2
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Abstract
The invention discloses a rigidity detection device of a highway guardrail, and belongs to the field of highway infrastructure detection. The vibration excitation unit comprises a vibration exciter and a connecting piece for supporting the vibration exciter, wherein the vibration exciter acts on the trough surface of the wave-shaped guardrail plate through the connecting piece; the detection unit comprises at least three elastic deformation detectors, wherein at least one elastic deformation detector is arranged on the connecting piece, at least one elastic deformation detector is arranged on the waveform guardrail plate, and at least one elastic deformation detector is arranged on the guardrail upright post for supporting the waveform guardrail plate; the control unit comprises a power supply module, a data storage module and a data processing module, wherein the power supply module is used for supplying power to the vibration exciter, the data storage module is used for storing detection data of the detection unit, and the data processing module is used for obtaining elastic deformation of the detected surface according to the detection data. The invention is particularly suitable for non-destructive stiffness testing of a work rail.
Description
Technical Field
The invention belongs to the technical field of highway infrastructure detection, and particularly relates to a device suitable for detecting rigidity of an in-service waveform beam steel guardrail.
Background
The waveform beam steel guardrail is a common traffic safety infrastructure of a highway and is a structure which is contacted firstly after a runaway vehicle rushes out of a lane. When a collision accident occurs, collision force is dispersed to the wavy beam guardrail plate and then transmitted to the foundation through the anti-blocking block and the upright post; under the impact action of the wave beam guardrail plate, the waves are unfolded to absorb energy. Therefore, in order to prevent the vehicle from rushing out of the road, the guardrail plate is necessarily required to have a considerable mechanical strength so as to resist the collision of the vehicle, but from the viewpoint of protecting the passenger from injury or reducing the injury degree, the guardrail plate is required not to have a certain rigidity but to have a certain elasticity. For a section of guardrail structure which is installed and meets the design standard, the rigidity and the strength of the guardrail structure have positive correlation, and the rigidity and the strength of the guardrail structure decline in the long-term use process, so that the structural rigidity of the guardrail structure needs to be measured periodically to infer the change of the strength of the guardrail structure.
At present, ultrasonic detection is a common technology in metal flaw detection, and the technology is suitable for detecting damage in a small precise test piece and has low efficiency in detecting a large-area guardrail structure; although the method for applying the static load can cause plastic deformation of the guardrail, the method is more visual, but the equipment for generating the thrust is larger in size, higher in implementation difficulty, and unsuitable for rigidity detection of the in-service waveform beam steel guardrail, and the irreversible plastic damage of the guardrail structure is caused.
Disclosure of Invention
The invention aims to solve the technical problem that the existing rigidity detection device is not suitable for long-term rigidity detection of in-service corrugated beam steel guardrails.
Aiming at the technical problems, the invention provides the following technical scheme:
a stiffness detection device for a highway guardrail, comprising: the vibration excitation unit comprises a vibration exciter and a connecting piece for supporting the vibration exciter, and the vibration exciter acts on the trough surface of the wave-shaped guardrail plate through the connecting piece; the detection unit comprises at least three elastic deformation detectors, wherein at least one elastic deformation detector is arranged on the connecting piece, at least one elastic deformation detector is arranged on the waveform guardrail plate, and at least one elastic deformation detector is arranged on a guardrail column for supporting the waveform guardrail plate; the control unit comprises a power supply module, a data storage module and a data processing module, wherein the power supply module is used for supplying power to the vibration exciter, the data storage module is used for storing detection data of the detection unit, and the data processing module is used for obtaining elastic deformation of the detected surface according to the detection data.
In some embodiments of the invention, the connector comprises: the first connecting plate is suitable for being in abutting fit with the first trough surface of the wave-shaped guardrail plate; the second connecting plate is suitable for being in abutting fit with a second trough surface of the wave-shaped guardrail plate; and the third connecting plate is connected between the first connecting plate and the second connecting plate and extends along the vertical direction, and the vibration exciter is installed and acts on the third connecting plate.
In some embodiments of the present invention, the connecting piece is detachably connected to the lap joint areas of the two wave-shaped guardrail plates through a fastening component, where at least one first lap joint hole is provided on a first trough surface of the lap joint areas of the two wave-shaped guardrail plates, at least one second lap joint hole is provided on a second trough surface of the lap joint areas of the two wave-shaped guardrail plates, at least one first connecting hole is provided on the first connecting plate, at least one second connecting hole is provided on the second connecting plate, the fastening component is penetrated through the first connecting hole and the first lap joint hole to connect the first connecting plate with the first trough surface, and the fastening component is penetrated through the second connecting hole and the second lap joint hole to connect the first connecting plate with the first trough surface.
In some embodiments of the present invention, the connecting piece further includes at least one reinforcing rib, the reinforcing rib is located on a side surface of the third connecting plate opposite to the mounting surface of the vibration exciter, the plate surface of the reinforcing rib is perpendicular to the third connecting plate and extends along a vertical direction, and the upper end and the lower end of the reinforcing rib are respectively connected to the first connecting plate and the second connecting plate.
In some embodiments of the present invention, the vibration exciter includes a vibration motor, the vibration motor acts on the third connecting plate in a first area near the geometric center of the third connecting plate, the connecting piece is provided with two mutually parallel reinforcing ribs, and the reinforcing ribs are correspondingly arranged in the first area.
In some embodiments of the present invention, the elastic deformation detector is adhered to the surface to be detected, where a plurality of waveform guardrail plates are sequentially connected in a lap joint manner, at least one elastic deformation detector is adhered to a geometric center position of one of the waveform guardrail plates, and at least one elastic deformation detector is adhered to a position of the guardrail upright post, which is equal to the height of the vibration exciter.
In some embodiments of the present invention, the elastic deformation detector includes an accelerometer, and the data processing module of the control unit determines the amplitude of the detected surface according to the acceleration of the detected surface.
In some embodiments of the present invention, the control unit further includes a timing module, and the data processing module is further configured to control on and off time of the vibration exciter according to the timing module.
In some embodiments of the present invention, the power supply module includes a solar panel, a storage battery, and a voltage stabilizing module, where the voltage stabilizing module is configured to provide a constant voltage to the vibration exciter.
In some embodiments of the present invention, the control unit is encapsulated in a housing, the housing has a socket portion, and the housing is fixed on the upper side of the guardrail column through the socket portion.
Compared with the prior art, the technical scheme of the invention has the following technical effects:
according to the rigidity detection device of the highway guardrail, provided by the invention, the vibration exciter for applying vibration force to the waveform guardrail plate is arranged to enable the waveform guardrail plate to be subjected to periodic sinusoidal vibration force, and the elastic deformation detectors are respectively arranged at different positions of the highway guardrail to realize the elastic deformation detection of the waveform guardrail plate and the guardrail upright post. Meanwhile, the control unit stores detection data of the detection unit and is used for obtaining the elastic deformation of the detected surface according to the detection data, and the elastic deformation of the highway guardrail is adopted to characterize structural rigidity so as to analyze and judge the long-term and slow change of the protective performance of the guardrail along with time and further obtain the rigidity performance of the highway guardrail. Meanwhile, the structure is simple, the device is convenient to install on the in-service highway guardrail, and nondestructive testing of the highway guardrail can be achieved.
Drawings
The objects and advantages of the present invention will be better understood by describing in detail preferred embodiments thereof with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of a construction of an embodiment of a stiffness sensing device for a highway guardrail according to the present invention;
FIG. 2 is a block diagram of one embodiment of a stiffness sensing device for a highway guardrail of the present invention;
FIG. 3 is a partial block diagram of one embodiment of the stiffness sensing device of the highway guardrail of the present invention;
FIG. 4 is a side cross-sectional view of one embodiment of the stiffness sensing device of the highway guardrail of the present invention;
fig. 5 is a schematic view of an embodiment of the excitation unit in the stiffness detection device of the highway guardrail according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Fig. 1 and 2 show an embodiment of the stiffness detection device of the highway guardrail according to the present invention. The rigidity detection device is used for collecting elastic deformation data of the highway in-service waveform guardrail plate in a vibration state. The highway guardrail comprises a plurality of wavy guardrail plates A1 which are sequentially overlapped and guardrail posts A2 which support the wavy guardrail plates A1. The wave-shaped guardrail plate A1 is formed into a wave-shaped steel plate structure and comprises at least one V-shaped wave crest and at least one V-shaped wave trough.
As shown in fig. 1 and 2, the stiffness detection device includes an excitation unit 10, a detection unit 20, and a control unit 30; the excitation unit 10 is used for stabilizing forced vibration of the waveform guardrail plate A1; the vibration exciter comprises a vibration exciter 11 and a connecting piece 12 for supporting the vibration exciter 11, wherein the vibration exciter 11 acts on the trough surface of the wave-shaped guardrail plate A1 through the connecting piece 12; the detecting unit 20 includes at least three elastic deformation detectors 21, wherein at least one of the elastic deformation detectors 21 is mounted on the connecting member 12, at least one of the elastic deformation detectors 21 is mounted on the waveform guardrail plate A1, and at least one of the elastic deformation detectors 21 is mounted on the guardrail post A2 for supporting the waveform guardrail plate A1; the control unit 30 comprises a power supply module 31, a data storage module 32 and a data processing module 33, wherein the power supply module 31 is used for supplying power to the vibration exciter 11, the data storage module 32 is used for storing detection data of the detection unit 20, and the data processing module 33 is used for obtaining the elastic deformation of the detected surface according to the detection data.
In the rigidity detection device, the vibration exciter 11 for applying vibration force to the waveform guardrail plate A1 is arranged to receive periodic sinusoidal vibration force, and the elastic deformation detectors 21 are respectively arranged at different positions of the highway guardrail to realize the elastic deformation detection of the waveform guardrail plate A1 and the guardrail upright post A2. Meanwhile, the control unit 30 stores the detection data of the detection unit 20, and is used for obtaining the elastic deformation of the detected surface according to the detection data, and the elastic deformation of the highway guardrail is adopted to characterize the structural rigidity, so that the analysis and judgment of the long-term and slow change of the protective performance of the guardrail along with time are facilitated, and the rigidity performance of the highway guardrail is obtained. Meanwhile, the structure is simple, the device is convenient to install on the in-service highway guardrail, and nondestructive testing of the highway guardrail can be achieved.
Specifically, in an alternative embodiment, the connecting member 12 includes a first connecting plate 121 and a second connecting plate 122 disposed opposite to each other at a distance, and a third connecting plate 123 connected between the first connecting plate 121 and the second connecting plate 122 and extending in a vertical direction. The first connecting plate 121 and the second connecting plate 122 are respectively arranged obliquely relative to the horizontal direction, the first connecting plate 121 is suitable for being in abutting fit with the first trough surface of the wave-shaped guardrail plate A1, the second connecting plate 122 is suitable for being in abutting fit with the second trough surface of the wave-shaped guardrail plate A1, namely, the extending direction of the first connecting plate 121 is consistent with the first trough surface, and the extending direction of the second connecting plate 122 is consistent with the second trough surface; the exciter 11 is mounted and acts on the third connecting plate 123.
The connection manner between the connecting piece 12 and the wave-shaped guardrail plate A1 is not unique, and in one embodiment, the first connecting plate 121 and the second connecting plate 122 of the connecting piece 12 are fixedly connected to the wave-shaped guardrail plate A1 through bonding, welding, and the like. In another alternative embodiment, as shown in fig. 3, the connecting piece 12 is detachably connected to the lap joint area of the two wave-shaped guardrail plates A1 through a fastening component 13, wherein at least one first lap hole is arranged on a first trough surface of the lap joint area of the two wave-shaped guardrail plates A1, at least one second lap hole is arranged on a second trough surface of the lap joint area of the two wave-shaped guardrail plates A1, and the wave-shaped guardrail plates A1 are detachably overlapped through the fastening component 13 penetrating through the first lap holes and the second lap holes on the lap joint area without the stiffness detection device; the first connecting plate 121 is provided with at least one first connecting hole, the second connecting plate 122 is provided with at least one second connecting hole, the fastening component 13 is arranged through the first connecting hole and the first overlap hole to connect the first connecting plate 121 with the first trough surface, and the fastening component 13 is arranged through the second connecting hole and the second overlap hole to connect the first connecting plate 121 with the first trough surface. The connection between the connecting piece 12 and the waveform guardrail plate A1 can be realized on the basis of not changing the structure of the original waveform guardrail plate A1 by adopting the connection mode.
Specifically, in an alternative embodiment, as shown in fig. 5, the connecting member 12 further includes at least one reinforcing rib 124, the reinforcing rib 124 is located on a side of the third connecting plate 123 opposite to the mounting surface of the exciter 11, the plate surface of the reinforcing rib 124 is perpendicular to the third connecting plate 123 and extends in the vertical direction, and the upper end and the lower end of the reinforcing rib 124 are respectively connected to the first connecting plate 121 and the second connecting plate 122. The reinforcing ribs 124 can improve the supporting strength of the connecting piece 12, and avoid the vibration exciter 11 acting on the third connecting plate 123 for a long time, so that the local position is subjected to plastic deformation to further influence the vibration transmission efficiency of the connecting piece 12.
Specifically, in an alternative embodiment, the exciter 11 includes a vibration motor, for example, a double-vane vibration motor is used, the vibration motor acts on a first area on the third connecting plate 123, specifically, the first area is located in a geometric center area of the third connecting plate 123, for example, the third connecting plate 123 is a rectangular plate, the first area is located in a central area of the rectangular plate and is rectangular, and the exciting force direction of the exciter 11 is vertical to the mounting surface of the rectangular plate, so that the exciting force of the exciter 11 can be transferred to two trough surfaces opposite to the wave-shaped guardrail plate A1 relatively in a balanced manner.
The connecting piece 12 is provided with two mutually parallel reinforcing ribs 124, the reinforcing ribs 124 are correspondingly arranged in the area corresponding to the first area, that is, the distance between the two reinforcing ribs 124 is smaller than or equal to the width of the first area along the horizontal direction, and the connecting piece can form better support for the third connecting plate 123, so that the third connecting plate 123 is prevented from plastic deformation.
Specifically, in an alternative embodiment, the elastic deformation detector 21 is adhesively connected to the detection surface, where a plurality of waveform guardrail plates A1 are sequentially connected in an overlapping manner, at least one elastic deformation detector 21 is adhered to a geometric center position of one of the waveform guardrail plates A1, and at least one elastic deformation detector 21 is adhered to a position of the guardrail post A2 at the same height as the vibration exciter 11.
Specifically, in an alternative embodiment, the elastic deformation detector 21 includes an accelerometer, the accelerometer collects acceleration of the measured point changing with time in three coordinate axis directions in a rectangular coordinate system, and the data processing module 33 of the control unit 30 calculates the vibration amplitude of the detected surface by integrating the data collection time.
The relation between the acceleration and the amplitude is as follows:
wherein A is the amplitude of the measured point, a is the acceleration value of the measured point, ω is the angular frequency of the measured point, and since the vibration exciter 11 is forced simple harmonic vibration and rigid connection is adopted between the vibration exciter 11 and the waveform guardrail plate A1/guardrail upright A2, the angular frequency ω of the measured point is equal to the angular frequency of the vibration exciter 11.
The control unit 30 further comprises a timing module 34, the timing module 34 comprises a timing circuit, the data processing module 33 is further configured to control the on and off time of the vibration exciter 11 according to the timing circuit, and the stiffness change of the highway guardrail can be obtained by comparing the amplitudes of the measured points periodically, such as monthly, quarterly or annual.
In order to facilitate the long-term outdoor operation of the measuring device, the power supply module 31 includes a solar panel 311, a storage battery 312, and a voltage stabilizing module 313, where the solar panel 311 is used to convert solar energy into electric energy and store the electric energy through the storage battery 312, so that the measuring device can still normally operate in the outdoor environment for a long time, and the voltage stabilizing module 313 is used to provide a constant voltage to the vibration exciter 11, so that the measured point amplitude values measured in different periods are comparable.
Specifically, the control unit 30 is encapsulated in a housing 35, the housing 35 is mounted on top of the guardrail column A2, specifically, the housing 35 has a socket 351, which is socket-connected to the top end of the guardrail column A2, wherein the solar panel 311 is located on the upper surface of the housing 35.
When the measuring device is used for rigid detection of the highway guardrail, firstly, the connecting piece 12 with the vibration exciter 11 is arranged at the lap joint position of the two wave beam guardrails, 4 lap bolts of the upper inclined surface and the lower inclined surface of the guardrail plate are kept motionless, and 4 lap bolts of the middle trough area are dismounted. The connecting member 12 is inserted into the horizontal trough of the wave-shaped guardrail plate A1, and the pair of bolt holes Ji Boxing are lap-jointed to the guardrail plate A1 and fixed by fastening bolts. The plurality of elastic deformation detectors 21 are respectively adhered to the surface of the third connecting plate 123 of the connecting piece 12, the geometric center area of the waveform guardrail plate A1 and the position of the guardrail column A2, which is equal to the height of the vibration exciter 11, the shell 35 which is packaged with the control unit 30 is sleeved and fixed on the upper side of the guardrail column A2, the solar cell panel 311 is positioned on the top surface of the shell, the installation and the fixation of the measuring device are completed, and finally the connection of the power supply line and the data line is completed.
The control process and the working principle of the measuring device are as follows: the timing module 34 sets the times at which the various components of the measuring device are turned on and off. The solar panel 311 supplies power to the storage battery 312, the voltage of the storage battery 312 passes through the voltage stabilizing module 313 to ensure that the timer circuit always works, and the timer module 34 controls the vibration motor to be turned on every fixed time, for example, 12 hours or 24 hours. After the vibration motor vibrates, the guardrail generates stable forced vibration after a time t1, for example 10 s. At this time, the elastic deformation detector 21 and the data storage module 32 are controlled to be simultaneously turned on, the elastic deformation detector 21 starts to upload acceleration data to the data storage module 32, the timing module 34 controls the switch of the elastic deformation detector 21 and the data storage module 32 to be simultaneously turned off after a time t2, for example, 60s, and then turns off the vibration motor after a time t1, for example, 10 s. In other non-working time, the vibration exciter 11 and the elastic deformation detector 21 are all in the off state, so that the power consumption of the whole device is very low, and the energy converted by the solar panel 311 every day is enough to support the long-time working of the device. The timing module 34 may also be implemented using the timing functions of the navigational positioning module.
The data processing module 33 can obtain 3 data tables corresponding to 3 measured points after using a triaxial accelerometer as the elastic deformation detector 21, where each data table is divided into X, Y, Z directions, and taking the detector 1 as an example, the time interval of each set of data is an acquisition period, typically 50ms, that is, 20 sets of acceleration values are taken per second, as shown in the following table.
According to the conversion relation between the acceleration and the amplitude, the amplitude data of the detected point is obtained, and the rigidity change of the guardrail structure can be obtained through analysis by comparing the amplitudes of the detected point in months, quarterly or year.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While obvious variations or modifications are contemplated as falling within the scope of the present invention.
Claims (10)
1. A stiffness testing device for a highway guardrail, comprising:
the vibration excitation unit comprises a vibration exciter and a connecting piece for supporting the vibration exciter, and the vibration exciter acts on the trough surface of the wave-shaped guardrail plate through the connecting piece;
the detection unit comprises at least three elastic deformation detectors, wherein at least one elastic deformation detector is arranged on the connecting piece, at least one elastic deformation detector is arranged on the waveform guardrail plate, and at least one elastic deformation detector is arranged on a guardrail column for supporting the waveform guardrail plate;
the control unit comprises a power supply module, a data storage module and a data processing module, wherein the power supply module is used for supplying power to the vibration exciter, the data storage module is used for storing detection data of the detection unit, and the data processing module is used for obtaining elastic deformation of the detected surface according to the detection data.
2. The apparatus for detecting rigidity of highway guardrail according to claim 1, wherein said connecting member comprises:
the first connecting plate is suitable for being in abutting fit with the first trough surface of the wave-shaped guardrail plate;
the second connecting plate is suitable for being in abutting fit with a second trough surface of the wave-shaped guardrail plate;
and the third connecting plate is connected between the first connecting plate and the second connecting plate and extends along the vertical direction, and the vibration exciter is installed and acts on the third connecting plate.
3. The device for detecting the rigidity of a highway guardrail according to claim 2, wherein the connecting piece is detachably connected to the lap joint areas of the two wave-shaped guardrail plates through a fastening assembly, at least one first lap joint hole is formed in a first trough surface of the lap joint areas of the two wave-shaped guardrail plates, at least one second lap joint hole is formed in a second trough surface of the lap joint areas of the two wave-shaped guardrail plates, at least one first connecting hole is formed in the first connecting plate, at least one second connecting hole is formed in the second connecting plate, the fastening assembly penetrates through the first connecting hole and the first lap joint hole to connect the first connecting plate with the first trough surface, and the fastening assembly penetrates through the second connecting hole and the second lap joint hole to connect the first connecting plate with the first trough surface.
4. The device for detecting the rigidity of a highway guardrail according to claim 2, wherein the connecting piece further comprises at least one reinforcing rib, the reinforcing rib is located on a side surface of the third connecting plate opposite to the mounting surface of the vibration exciter, the plate surface of the reinforcing rib is perpendicular to the third connecting plate and extends along the vertical direction, and the upper end and the lower end of the reinforcing rib are respectively connected to the first connecting plate and the second connecting plate.
5. The apparatus according to claim 4, wherein the vibration exciter comprises a vibration motor acting on the third connecting plate in a first region near the geometric center thereof, the connecting member is provided with two mutually parallel reinforcing ribs, and the reinforcing ribs are correspondingly arranged in the first region.
6. The device for detecting the rigidity of a highway guardrail according to claim 1, wherein the elastic deformation detectors are adhered to a surface to be detected, wherein a plurality of waveform guardrail plates are sequentially connected in a lap joint mode, at least one elastic deformation detector is adhered to the geometric center position of one waveform guardrail plate, and at least one elastic deformation detector is adhered to the guardrail upright post at the same height position as the vibration exciter.
7. The apparatus according to claim 1, wherein the elastic deformation detector comprises an accelerometer, and the data processing module of the control unit determines the amplitude of the detected surface based on the acceleration of the detected surface.
8. The apparatus of claim 1, wherein the control unit further comprises a timing module, and the data processing module is further configured to control the on and off time of the vibration exciter according to the timing module.
9. The apparatus of claim 1, wherein the power supply module comprises a solar panel, a battery, and a voltage stabilizing module for providing a constant voltage to the vibration exciter.
10. The device for detecting the rigidity of a highway guardrail according to claim 1, wherein the control unit is encapsulated in a housing, the housing is provided with a sleeving part, and the housing is sleeved and fixed on the upper side of the guardrail upright post through the sleeving part.
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| CN202311487255.0A CN117233008B (en) | 2023-11-09 | 2023-11-09 | Rigidity detection device of highway guardrail |
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| CN202311487255.0A CN117233008B (en) | 2023-11-09 | 2023-11-09 | Rigidity detection device of highway guardrail |
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