CN113176056A - Energy-saving device and method for monitoring concrete stress strain - Google Patents
Energy-saving device and method for monitoring concrete stress strain Download PDFInfo
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
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- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
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- G01N2203/0075—Strain-stress relations or elastic constants
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The invention relates to the technical field of stress-strain detection, and provides an energy-saving device for monitoring concrete stress-strain, which can adaptively adjust monitoring frequency and comprises a detection module, a processing module and a control module, wherein the detection module is used for monitoring and obtaining concrete stress information; wherein: the storage module is used for storing a detection frequency table, and the detection frequency table comprises a preset condition and a corresponding detection frequency under the preset condition; the acquisition module is used for acquiring the condition factors of the concrete; the matching module is used for comparing the acquired condition factors with the detection frequency table and matching corresponding detection frequencies; and the control module is used for controlling the detection module to work according to the matched detection frequency and controlling the detection module to sleep in the time interval between two adjacent monitoring operations. The invention also provides an energy-saving method for monitoring the stress and strain of the concrete.
Description
Technical Field
The invention relates to the technical field of stress-strain detection, in particular to an energy-saving device and method for monitoring concrete stress-strain.
Background
Stress strain is a generic term for stress and strain. Stress is defined as "additional internal force per unit area" experienced. When an object is deformed by force, the deformation degrees at various points in the body are generally different, and the mechanical quantity for describing the deformation degree at one point is the strain of the point. The concrete stress-strain monitoring is to measure the stress and the change condition of the concrete under the action of load and other factors by monitoring instruments and equipment buried on the surface and in the concrete; the stress state of the concrete is known, whether the working condition of a concrete building is normal or not is analyzed, the safety degree of the building is evaluated, scientific basis is provided for safe operation and maintenance reinforcement of engineering, and meanwhile actual measurement data is provided for evaluating construction quality and improving design.
With the rapid development of social economy and transportation industry in China, the traffic pressure is getting larger, on one hand, large-sized and oversize bridges are rapidly increased to achieve the purposes of relieving the traffic pressure and shortening the transportation distance, and on the other hand, the bridges built on all levels of roads in the past year are loaded with very heavy traffic loads and heavy traffic crossings. Construction has also been left with varying degrees of defects due to more or less some design shortcomings for various historical reasons. Therefore, the safety monitoring of the bridge is very urgent. For a bridge, the stress condition of concrete under different conditions is also different, for example, when the traffic flow on the bridge is large, the stress on the road surface is larger than usual, and under the condition, the stress condition of the bridge needs to be particularly emphasized. However, at present, when the safety monitoring of the bridge is realized, a mode of monitoring the stress of the bridge is usually adopted, during the monitoring, a stress monitoring instrument monitors the stress-strain condition of the concrete of the bridge according to a preset fixed frequency, if the fixed frequency is preset to be larger, the power consumption of the stress monitoring instrument can be increased by the high-frequency monitoring under the normal condition, but if the fixed frequency is preset to be smaller, the key monitoring of the stress condition of the bridge under the special condition cannot be realized.
Disclosure of Invention
The invention aims to provide an energy-saving device for monitoring concrete stress strain, which can adaptively adjust monitoring frequency.
The invention provides a basic scheme that: the energy-saving device for monitoring the stress and strain of the concrete comprises a detection module, a monitoring module and a control module, wherein the detection module is used for monitoring and obtaining the stress information of the concrete;
wherein: the storage module is used for storing a detection frequency table, and the detection frequency table comprises a preset condition and a corresponding detection frequency under the preset condition;
the acquisition module is used for acquiring the condition factors of the concrete;
the matching module is used for comparing the acquired condition factors with the detection frequency table and matching corresponding detection frequencies;
and the control module is used for controlling the detection module to work according to the matched detection frequency and controlling the detection module to sleep in the time interval between two adjacent monitoring operations.
The basic scheme has the working principle and the beneficial effects that: in the scheme, the condition factors acquired by the set acquisition module represent the current environment condition of the concrete, such as normal temperature, high temperature, cold or large traffic flow; considering that the stress of the concrete is different from the stress condition under normal temperature or normal traffic flow and tends to be serious under special conditions of high temperature or large traffic flow, the concrete condition needs to be focused under the conditions, so that the scheme is also provided with a matching module for comparing the collected condition factors with a preset monitoring frequency table and matching the monitoring frequency corresponding to the current condition factors, so as to adjust the monitoring frequency of the detection module, if the monitoring frequency is increased under the condition factors needing to be focused, under some common condition factors, the lower monitoring frequency is adopted, the monitoring operation frequency of the detection module is reduced by adjusting the monitoring frequency in real time according to the condition factors, and the detection module is also designed to sleep at the time except the monitoring operation, thereby reducing the power consumption of the detection module; furthermore, compared with the prior art, in the scheme, although the acquisition module is added, because the acquisition module is only a condition factor for acquiring concrete, the process of communicating with external detection equipment and receiving data is involved, and the detection process of the detection module involves the data acquisition and operation processing process, the power consumption of the acquisition module is smaller than that of the detection module.
Compared with the mode that the detection module adopts the same working frequency in the prior art, the scheme can reduce the average working frequency of the detection module by the mode of self-adaptive adjustment of the detection frequency of the detection module in real time, and increases the dormancy time of the detection module, thereby reducing the power consumption of the detection module, reducing the energy consumption and achieving the purpose of energy conservation.
The first preferred scheme is as follows: preferably, as a first basic scheme, the detection frequency table includes interval duration; the control module comprises a timing unit and a triggering unit, the timing unit is used for starting timing when the matching module matches the detection frequency to obtain timing duration, and the triggering unit triggers the detection module to work when the timing duration is equal to the interval duration. Has the advantages that: in the scheme, the detection module is used for monitoring according to the detection frequency through the matching of the timing unit and the trigger unit, and the operation is simple.
The preferred scheme II is as follows: preferably, the control module further includes a calculating unit, the calculating unit is configured to calculate the timing duration according to the interval duration, and the triggering unit is further configured to trigger the timing unit to restart timing when the calculated timing duration is equal to the interval duration. Has the advantages that: in the scheme, when the calculated timing duration is equal to the interval duration, the triggering unit is used for triggering the timing unit to count again, so that the next monitoring operation is ensured to be carried out smoothly.
The preferable scheme is three: preferably, as a first preferred scheme, the control module further comprises a calculating unit, the calculating unit is configured to calculate the timing duration according to the interval duration, and when the calculated timing duration is a multiple of the interval duration, the triggering unit triggers the detection module to operate. Has the advantages that: in the scheme, the designed calculating unit is used for calculating the interval duration and the timing duration, and when the calculated timing duration is a multiple of the interval duration, the detection module is triggered to work, so that the multiple interval work of the detection module is realized, and the operation is simple.
The preferable scheme is four: as the optimization of the first basic scheme, the system also comprises an input module used for inputting modification information; and the correction module is used for modifying the preset detection frequency table according to the modification information. Has the advantages that: in consideration of the fact that the preset detection frequency table needs to be corrected in time in order to better meet the current actual situation at different periods, the scheme realizes the correction of the detection frequency table by utilizing the matching of the set input module and the correction module, and is simple to operate.
The invention also aims to provide an energy-saving method for monitoring the stress strain of concrete, which comprises the following steps:
the collection step comprises: collecting condition factors of concrete;
matching: matching corresponding detection frequency from a preset detection frequency table according to the acquired condition factors;
a detection step: monitoring the concrete by using a detection module according to the matched detection frequency to obtain stress information;
a sleep step: and controlling the detection module to sleep in the time interval between two adjacent monitoring operations.
The principle and the beneficial effects of the second basic scheme are as follows: considering that the stress condition of the concrete is different under different condition factors, when the stress trend of the concrete is serious, the probability of the concrete deforming and the like is increased, so that the stress and strain condition of the concrete needs to be focused on when the stress trend of the concrete is serious, and when the stress trend of the concrete is reduced, the probability of the concrete deforming and the like is reduced, so that the stress and strain condition of the concrete does not need to be focused on, namely, under different condition factors, because the stress condition of the concrete is different, the attention degree of the stress and strain condition of the concrete is different, in the scheme, different attention to the stress and strain condition of the concrete is realized by setting different detection frequencies, after the condition factors of the concrete are collected by the collection step, the corresponding detection frequency is matched from the preset detection frequency table by the matching step according to the collected condition factors, then in the detection step, the detection module is adopted to monitor the concrete according to the matched detection frequency to obtain stress information, and then the detection module is controlled to sleep in the time interval between two adjacent monitoring operations through the cooperation with the sleep step; on the other hand, a dormancy step is also set to control the detection module to enter a dormant state in a time interval between two adjacent monitoring operations.
Drawings
FIG. 1 is a block diagram of an energy saving device for monitoring concrete stress and strain according to a first embodiment of the present invention;
fig. 2 is a flowchart of energy saving for monitoring concrete stress-strain according to the first embodiment.
Detailed Description
The following is further detailed by way of specific embodiments:
example one
Substantially as shown in figure 1: the energy-saving device for monitoring the stress and strain of the concrete comprises a detection module, a monitoring module and a control module, wherein the detection module is used for monitoring and obtaining the stress information of the concrete; in this embodiment, taking concrete of a bridge as an example, the detection module employs a surface strain gauge.
The storage module is used for storing a detection frequency table, the detection frequency table comprises a preset condition and a corresponding detection frequency under the preset condition, and the detection frequency table comprises interval duration; in this embodiment, taking the traffic flow as an example, the detection frequency table is shown in table one.
Watch 1
| Preset conditions | Vehicle flow < X1 | Vehicle flow rate less than X2 and less than or equal to X1 | Vehicle flow rate not less than X2 |
| Detecting frequency | f1 | f2 | f3 |
| At intervalsLong and long | T1-1 | T2-1 | T3-1 |
Wherein f1 < f2 < f3 means that the detection frequency is high when the vehicle flow rate is high, and the detection frequency is low when the vehicle flow rate is low.
The acquisition module is used for acquiring the condition factors of the concrete; taking the traffic flow as an example, since the traffic condition of the bridge is detected by a special detection system, in this embodiment, after the authorization of the detection system mechanism is obtained, the acquisition module communicates from the detection system and acquires the condition factors of the concrete, and the acquisition includes two modes, namely active acquisition and passive acquisition, where the active acquisition refers to acquiring the condition factors after the acquisition module communicates with the detection system and inquires from the detection system, and the passive acquisition refers to the detection system sending the condition factors to the acquisition module, and the acquisition module only needs to receive the condition factors. The acquired traffic flow is set to be X, that is, in this embodiment, the condition factor is X.
The matching module is used for comparing the acquired condition factors with the detection frequency table and matching corresponding detection frequencies; and setting the collected condition factors X > X2, and the matching module matches the detection frequency from the detection frequency table to be f 3.
And the control module is used for controlling the detection module to work according to the matched detection frequency and controlling the detection module to sleep in the time interval between two adjacent monitoring operations. Setting the matched detection frequency f3 to be 0.1Hz, then T3Is 10s, the corresponding interval duration is 10 s. Namely, the detection module performs the monitoring operation every 10s, so that in a period of 10s, after the control module monitors and obtains the concrete stress information in the first second, the control module controls the detection module to sleep in the following nine-second time period.
Specifically, in this embodiment, the control module includes a timing unit, a calculating unit, and a triggering unit, where the timing unit is configured to start timing to obtain a timing duration when the matching module matches the detection frequency, the triggering unit triggers the detection module to operate when the timing duration is equal to the interval duration, the calculating unit is configured to calculate the timing duration according to the interval duration, and the triggering unit is further configured to trigger the timing unit to restart timing when the calculated timing duration is equal to the interval duration. Namely, the detection frequency is set to be 0.1Hz, the interval time length is 10s, when the timing time length is 10s, the timing time length calculated by the calculating unit is 10s, and at this time, the triggering unit triggers the timing unit to count again.
The input module is used for inputting modification information; in this embodiment, the input module is a keyboard, and in other embodiments, the input module may also be other input peripherals such as a tablet, a microphone, and the like.
And the correction module is used for modifying the preset detection frequency table according to the modification information.
Based on the energy-saving device for monitoring the stress and strain of the concrete, as shown in fig. 2, the embodiment further discloses an energy-saving method for monitoring the stress and strain of the concrete, which includes the following steps:
the collection step comprises: acquiring condition factors of concrete; in this embodiment, the condition factor is, for example, a traffic flow, and the acquired traffic flow is set to be X, that is, the condition factor is X.
Matching: matching corresponding detection frequency from a preset detection frequency table according to the acquired condition factors; in the present embodiment, as shown in table one, when the collected vehicle flow rate X is less than X1, the matched detection frequency is f1, when the collected vehicle flow rate X is greater than or equal to X1 and X is less than X2, the matched detection frequency is f2, and when the collected vehicle flow rate X is greater than or equal to X2, the matched detection frequency is f 3.
A detection step: monitoring the concrete by using a detection module according to the matched detection frequency to obtain stress information; specifically, timing is started to obtain timing duration when the detection frequency is matched, the detection module is triggered to work when the timing duration is equal to the interval duration, and timing is restarted to obtain new timing duration; in this embodiment, the acquired vehicle flow X is set to be equal to or greater than X2, so the matched detection frequency is f3, and f3 is set to be 0.1Hz, that is, in the detection step, the detection module 10s performs a monitoring operation, specifically, the detection module starts timing when the detection frequency is matched, the detection module performs a monitoring operation when the timing duration of the timing is 10s, and restarts the timing, and the detection module performs a monitoring operation when the timing duration of the timing is 10s again.
A sleep step: the detection module is controlled to be dormant in the time interval between two adjacent monitoring operations, namely the detection module can be dormant after finishing one monitoring operation, and the detection module can be dormant again after being restarted for monitoring operation in the next monitoring operation.
And (3) correcting: and inputting modification information, and modifying the preset detection frequency table according to the input modification information.
Example two
The difference from the first embodiment is that, in the present embodiment, the control module includes a timing unit, a calculating unit and a triggering unit, the timing unit is configured to start timing to obtain a timing duration when the matching module matches the detection frequency, the calculating unit is configured to calculate the timing duration according to the interval duration, and the triggering unit triggers the detection module to operate when the calculated timing duration is a multiple of the interval duration.
In this embodiment, similarly, taking the matched detection frequency f3 as an example, setting f3 to 0.1Hz, and setting the interval duration to 10s, so when the detection frequency is matched, the timing unit starts to count to obtain the timing duration, the calculating unit calculates the timing duration, and when the timing duration is calculated to be equal to a multiple of the interval duration, that is, when the timing duration is 10s, 20s, 30s, and the like, the triggering unit triggers the detection module to operate.
EXAMPLE III
The difference between the first embodiment and the second embodiment is that the embodiment further comprises a power supply module of the detection module;
the electric quantity detection module is used for detecting the residual electric quantity of the power supply module;
the communication module is used for communicating with the monitoring center;
the detection module comprises a detection unit and a processing unit, the detection unit is used for acquiring stress parameters, and the processing unit is used for processing the acquired stress parameters to obtain stress information;
the storage module is also preset with the power consumption of the detection module in a normal state, a communication state and a storage state, wherein the normal state refers to the power consumption of the whole operation flow that the detection module collects the stress parameters and processes the stress parameters to obtain the stress information, the communication state refers to the power consumption of the operation flow that the detection module collects the stress parameters and transmits the stress parameters back to the communication module, in the process, in order to ensure that the stress parameters meet the requirement of information transmission, the format processing is also required to be carried out on the stress parameters so that the stress parameters can meet the format requirement of the information transmission, the storage state is the power consumption when the stress parameters are collected and stored, other processing operations on the stress parameters are not involved in the process, wherein, the power consumption in the normal state > the power consumption in the communication state > the power consumption in the storage state > the power consumption in the sleep mode.
The storage module also presets a monitoring grade table, and the monitoring grade table comprises a monitoring time period and monitoring importance grades, as shown in table two.
Watch two
| Monitoring period | T1-T2 | T2-T3 | T3-T4 |
| Importance level | Three equal | First-class | Second class |
Wherein, one is the important grade, two is the minor grade, three is the unimportant grade.
And the analysis module is used for analyzing whether the residual electric quantity can meet the electric quantity requirement of the detection module in the residual period according to the residual electric quantity detected by the electric quantity detection module.
And the control module is also used for adjusting and controlling the working state of the detection module according to the residual electric quantity detected by the electric quantity detection module and the monitoring grade table.
The description will be made with T1-T4 as one cycle. In order to ensure that the power supply module can maintain the operation of the detection module in one cycle, in this embodiment, the working state of the detection module is also adjusted according to the importance level of the monitoring period; the power in the normal state is set to be P1, the power in the communication state is set to be P2, the power in the storage state is set to be P3, the power consumption in the sleep mode is set to be P4, and P1 > P2 > P3 > P4.
Setting the remaining power detected by the power detection module as X, setting the remaining time in the period as t, setting the power required for the detection module to operate in a normal operating state as P1t in the remaining time in the period, analyzing the remaining power X and the required power P1t by the analysis module at this time, and if the remaining power X is less than the required power P1t, indicating that the remaining power cannot meet the power requirement of the detection module in the remaining period, so that the operating state of the detection module needs to be adjusted to ensure that the power supply module can maintain the power requirement of the detection module in the remaining period.
In addition, the importance degree of the monitoring operation in different monitoring periods is different in the same period, for example, when the traffic flow is in a peak period, stress and strain conditions of concrete, namely monitoring results, need to be focused, and when the traffic flow is low or no vehicle passes through for a long time at night, the monitoring results do not need to be focused.
Therefore, in the scheme, the importance levels of the monitoring operation in different monitoring periods are divided according to different monitoring periods, and for the monitoring period with the importance level of one level, a complete monitoring process needs to be completed in the monitoring period, namely the detection module needs to work normally; for the monitoring time period with the second-class importance level, the importance is reduced compared with the first-class importance level, so that the detection module can work in a mode in a communication state, namely, after the detection module collects the stress parameters, the stress parameters are transmitted back to the monitoring center through the communication module, the monitoring center processes the stress parameters to obtain corresponding stress information, and the detection module does not process in the state, so that the power consumption is reduced; for the monitoring time period with the three-level importance level, the detection module can work in a mode in a storage state due to the lowest importance, namely, after the detection module collects the stress parameters, the stress parameters are directly stored without any processing operation, and are not required to be transmitted back to a monitoring center, so that the power consumption of the detection module in the state is further reduced. The stress parameters can be processed by reading the stored stress parameters in a subsequent time.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (6)
1. The energy-saving device for monitoring the stress and strain of the concrete comprises a detection module, a monitoring module and a control module, wherein the detection module is used for monitoring and obtaining the stress information of the concrete;
the method is characterized in that: the device comprises a storage module, a detection module and a processing module, wherein the storage module is used for storing a detection frequency table, and the detection frequency table comprises a preset condition and a corresponding detection frequency under the preset condition;
the acquisition module is used for acquiring the condition factors of the concrete;
the matching module is used for comparing the acquired condition factors with the detection frequency table and matching corresponding detection frequencies;
and the control module is used for controlling the detection module to work according to the matched detection frequency and controlling the detection module to sleep in the time interval between two adjacent monitoring operations.
2. The energy saving device for concrete stress-strain monitoring according to claim 1, characterized in that: the detection frequency table comprises interval duration;
the control module comprises a timing unit and a triggering unit, the timing unit is used for starting timing to obtain timing duration when the matching module matches the detection frequency, and the triggering unit triggers the detection module to work when the timing duration is equal to the interval duration.
3. The energy saving device for concrete stress-strain monitoring according to claim 2, characterized in that: the control module further comprises a calculating unit, the calculating unit is used for calculating the timing duration according to the interval duration, and when the calculated timing duration is equal to the interval duration, the triggering unit is further used for triggering the timing unit to restart timing.
4. The energy saving device for concrete stress-strain monitoring according to claim 2, characterized in that: the control module further comprises a calculating unit, the calculating unit is used for calculating the timing duration according to the interval duration, and when the calculated timing duration is multiple of the interval duration, the triggering unit triggers the detection module to work.
5. The energy saving device for concrete stress-strain monitoring according to claim 1, characterized in that: the system also comprises an input module used for inputting modification information;
and the correction module is used for modifying the preset detection frequency table according to the modification information.
6. The energy-saving method for monitoring the stress and strain of the concrete is characterized by comprising the following steps: the method comprises the following steps:
the collection step comprises: collecting condition factors of concrete;
matching: matching corresponding detection frequency from a preset detection frequency table according to the acquired condition factors;
a detection step: monitoring the concrete by using a detection module according to the matched detection frequency to obtain stress information;
a sleep step: and controlling the detection module to sleep in the time interval between two adjacent monitoring operations.
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