CN210242686U - Bridge displacement detection device - Google Patents
Bridge displacement detection device Download PDFInfo
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- CN210242686U CN210242686U CN201921529610.5U CN201921529610U CN210242686U CN 210242686 U CN210242686 U CN 210242686U CN 201921529610 U CN201921529610 U CN 201921529610U CN 210242686 U CN210242686 U CN 210242686U
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 61
- 238000001514 detection method Methods 0.000 title claims abstract description 52
- 238000004891 communication Methods 0.000 claims abstract description 28
- 238000012545 processing Methods 0.000 claims abstract description 26
- 238000009434 installation Methods 0.000 abstract description 8
- 238000004080 punching Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 14
- 238000005070 sampling Methods 0.000 description 7
- 230000003321 amplification Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
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Abstract
The utility model relates to a bridge displacement detection area discloses a bridge displacement detection device, which comprises a power supply, detect the sensor, signal processing module, a controller, communication module, upper bracket and lower carriage, the first diaphragm of two first straight-bar swing joint is passed through at the upper bracket both ends, two second straight-bar swing joint second diaphragms are passed through at the lower carriage both ends, it includes base and relative base horizontal motion's slider to detect the sensor, the upper bracket deviates from first diaphragm one side linking base, the lower carriage deviates from two third straight-bars of second diaphragm one side swing joint, two third straight-bar link blocks. The power supply provides working voltage, the detection sensor is electrically connected with the signal processing module, the signal processing module is electrically connected with the controller, and the controller remotely sends bridge displacement through the communication module. Through the support of fixed usefulness of installation around the bridge, avoid punching the installation sensor on the bridge, it is easy and simple to handle.
Description
Technical Field
The utility model relates to a bridge displacement detection area, concretely relates to bridge displacement detection device.
Background
After the bridge construction is completed, the bridge can be aged and damaged in a long-term use process and in a facing natural environment, and the aging and the damage of the bridge can bring structural displacement, so that the displacement distance of the bridge is known in time, and the bridge is important for safe use.
Traditional bridge displacement detects mainly by artifical the measuring, reads the slide caliper of installation on the bridge through the manual work and obtains bridge displacement data, but in long-time use or natural environment, the bridge measuring tool such as slide caliper can appear destroying, and the data that obtain often is unreliable.
Patent No. CN105277173B discloses a device for detecting bridge inclined displacement, in which a sensor detects a bridge displacement parameter, and a communication module sends the bridge displacement parameter to a computer processing platform, so that although the detection of the bridge displacement parameter and the replacement of manual inspection are realized, multiple installation is required during sensor installation, and a fixed position, such as a punching installation fixed platform, needs to be searched again. Secondly, the bridge displacement detection device consumes power when in use, the bridge displacement changes gradually, and the device has higher requirement on power supply if being in a working state all the time. If adopt alternating current power supply, earlier stage arrangement cost increases, if adopt the battery power supply, needs the large capacity battery, changes regularly moreover, increases the maintenance cost. Finally, the sensor may have measurement errors due to temperature effects during use.
SUMMERY OF THE UTILITY MODEL
In view of the not enough of background art, the utility model provides a bridge displacement detection device, the technical problem that solve is that bridge displacement detection device among the prior art operates inconveniently when fixed sensor.
For solving the technical problem, the utility model provides a following technical scheme: a bridge displacement detection device comprises a power supply, a detection sensor, a signal processing module, a controller, a communication module, an upper support and a lower support.
The upper bracket is characterized in that two ends of the upper bracket are movably connected with first transverse plates through two first transverse rods, the upper bracket, the two first transverse rods and the first transverse plates are fixed around an upper pier in a surrounding mode, two ends of the lower bracket are movably connected with second transverse plates through two second transverse rods, the lower bracket, the two second transverse rods and the second transverse plates are fixed around a lower pier in a surrounding mode, the detection sensor comprises a base and a sliding block moving horizontally relative to the base, the upper bracket deviates from one side of the first transverse plates to connect the base, the lower bracket deviates from one side of the second transverse plates to movably connect the two third transverse rods, and the two third transverse rods are.
The detection sensor is electrically connected with the signal processing module, and the controller is respectively and electrically connected with the power supply, the signal processing module and the communication module.
The power supply provides working voltage, the detection sensor is configured to detect bridge displacement, the signal processing module converts analog quantity output by the detection sensor into digital quantity, the controller performs operation processing on the digital quantity output by the signal processing module, and the controller remotely sends the bridge displacement to the server through the communication module.
Furthermore, the controller is electrically connected with the RTC clock module, the RTC clock module comprises a control chip with low power consumption and a central control communication module, and the control chip wakes up the main controller through the central control communication module.
Furthermore, the upper bracket is connected with a control box.
Further, the controller is also electrically connected with the PGA circuit.
Furthermore, a measuring range voltage exists when the detection sensor is initially installed, and the detection sensor outputs a measuring voltage when the bridge displaces.
Furthermore, the signal processing module is an AD converter, and the input interface of the AD converter is respectively connected with the measuring range voltage of the detection sensor, the measurement voltage of the detection sensor and the voltage of the sampling resistor of the PGA circuit.
A bridge displacement detection method, which applies the bridge displacement detection device, comprises the following steps:
1: setting the awakening time of the controller in the main control chip, and awakening the controller by the main control chip through the central control communication module to carry out bridge displacement detection when the internal timing of the main control chip reaches the set awakening time;
2: the AD converter converts the range voltage and the output voltage of the detection sensor and the voltage of the sampling resistor from analog quantity to digital quantity and transmits the digital quantity to the controller;
3: the controller processes the received digital quantity, if the measured voltage is less than two thirds of the range voltage, the automatic gain switching module of the PGA circuit switches the size of the sampling resistor according to the measured voltage value, and adjusts the amplification factor to make the full-range signal of the AD converter uniform, thereby improving the measurement precision;
4: the controller controls the AD converter to enable the AD converter for 50 times, mean square error operation and median filtering are carried out on the three signal values, and then proportional operation is carried out to obtain the percentage of the current displacement to the total movable displacement;
5: the controller calculates the bridge displacement according to the percentage obtained in the step 4;
6: the controller sends the bridge displacement to the server through the communication module and sends the bridge displacement to the control chip, the control chip receives the feedback signal and then times again.
Compared with the prior art, the utility model beneficial effect who has is:
1: during detection, the sensor is fixed on the upper support, the mounting is simple and convenient, the phenomenon that a fixed platform is installed on a pier in a punching mode again is avoided, in addition, the upper support and the first transverse plate are movably connected through the two straight rods, the sensor can be installed on piers with different sizes, and the applicability is wide.
2: the bridge is subjected to periodic displacement detection through the wake-up time of the main controller, so that the power consumption is reduced, and the service life of the power supply is prolonged.
3: the detection sensor has total movable displacement and range voltage, the bridge outputs measurement voltage when displacement occurs, and the displacement length is calculated according to the ratio of the measurement voltage to the range voltage, so that the influence of temperature on the detection sensor is avoided.
Drawings
The utility model discloses there is following figure:
FIG. 1 is a schematic view of a control node of the present invention;
FIG. 2 is a schematic view of the actual installation of the present invention;
fig. 3 is a schematic view of the connection of the detection sensor of the present invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1 to 3, a bridge displacement detecting device includes a power supply 25, a detecting sensor 8, a signal processing module 20, a controller 22, a communication module 23, an upper bracket 1 and a lower bracket 4.
The two ends of the upper support 1 are movably connected with a first transverse plate 3 through two first straight rods 2, the two ends of the lower support 4 are movably connected with a second transverse plate 6 through two second straight rods 5, the detection sensor 8 comprises a base 8a and a sliding block 8b which horizontally moves relative to the base 8a, the upper support 1 deviates from one side of the first transverse plate 3 and is connected with the base 8a, the lower support 4 deviates from one side of the second transverse plate 6 and is movably connected with two third straight rods 7, and the two third straight rods 7 are connected with the sliding block 8 b. In this embodiment, the upper bracket 1, the two first straight bars 2 and the first transverse plate 3 are fixed around the upper bridge pier 10, the lower bracket 4, the two second straight bars 5 and the second transverse plate 6 are fixed around the lower bridge pier 11, and the specific installation needs are determined according to the actual bridge pier conditions.
The detection sensor 8 is electrically connected with the signal processing module 20, and the controller 22 is electrically connected with the power supply 25, the signal processing module 20 and the communication module 23 respectively.
The power supply 25 provides an operating voltage, wherein the power supply 25 is a battery. The detection sensor 8 is disposed to detect bridge displacement. The signal processing module 20 converts the analog quantity output from the detection sensor 8 into a digital quantity. The controller 22 performs arithmetic processing on the digital quantity output from the signal processing module 20.
The controller 22 is also electrically connected with a communication module 23, and the controller 22 remotely transmits the bridge displacement to the server through the communication module 23. In this embodiment, the controller encapsulates the bridge displacement data into a JSON format through the GPRS communication module, and sends the JSON format to the server according to the MQTT protocol.
The controller 22 is further electrically connected to the RTC clock module 21, and the RTC clock module 21 includes a low-power-consumption control chip and a central control communication module. In this embodiment, the wake-up time of the controller 22 is set in the control chip, and when the timing of the control chip reaches the set wake-up time, the control chip wakes up the controller through the central control communication module to perform bridge displacement detection.
The upper bracket 1 is connected with a control box 9, a power supply 25, a signal processing module 20, an RTC clock module 21, a controller 22, a communication module 23 and a PGA circuit 24 are arranged in the control box 9, in order to improve the transmitting capability of the communication module 23, an antenna 12 is arranged outside the mounting box 9, and the antenna 12 is electrically connected with the communication module 23.
The controller 22 is also electrically connected to the PGA circuit 24. The PGA circuit 24 is an amplifier having a high versatility, and includes a fully balanced differential amplifier module, a decoder module, and a resistance switch array module, where the resistance ratio of a negative feedback resistance voltage divider in the fully balanced differential amplifier module determines the maximum gain of the amplifier, and the attenuation of an input signal is controlled by the decoding result of the decoder module, so as to finally realize the adjustment of the gain of the amplifier. The amplifier is adopted to adjust the amplification factor, so that the full-scale signals of the AD converter are homogenized, and the measurement precision is improved.
The utility model discloses the measurement principle as follows: when the detection sensor 8 is installed, corresponding total movable displacement and a measuring range voltage exist, when the bridge displaces, the sliding block 8b and the base 8a have relative displacement, the detection sensor 8 outputs measurement voltage at the moment, and the ratio of the measurement voltage to the measuring range voltage is equal to the ratio of the current displacement to the total movable displacement, so that the current displacement of the bridge can be obtained by obtaining the measurement voltage of the detection sensor 8. The signal processing module 20 is an AD converter, and the input end of the AD converter is connected to the measuring range voltage of the detection sensor 8, the measurement voltage and the voltage of the sampling resistor of the PGA circuit 24, respectively. The controller 22 performs arithmetic processing on the digital signal output by the AD converter to obtain bridge displacement, and then sends bridge displacement data to the server through the communication module 23. In practice, the temperature drift of the sensor exists, and the influence caused by the temperature drift can be eliminated by calculating the bridge displacement according to the proportion. In addition, each section of the detection sensor 8 is affected by temperature differently, when the measurement voltage is less than two thirds of the range voltage, the PGA circuit 24 changes the sampling resistance value, and adjusts the gain multiple, so that the full-range signal of the AD converter is uniform, and the measurement precision is improved.
A bridge displacement detection method, which applies the bridge displacement detection device, comprises the following steps:
1: setting the awakening time of the controller 22 in the main control chip, and awakening the controller 22 by the main control chip through the central control communication module to detect the bridge displacement when the internal timing of the main control chip reaches the set awakening time;
2: the AD converter converts the measuring range voltage, the output voltage and the voltage of the sampling resistor of the detection sensor 8 from analog quantity to digital quantity and transmits the digital quantity to the controller 22;
3: the controller 22 processes the received digital quantity, if the measured voltage is less than two thirds of the range voltage, the automatic gain switching module of the PGA circuit 24 switches the size of the sampling resistor according to the measured voltage value, and adjusts the amplification factor to make the full-range signal of the AD converter uniform, thereby improving the measurement accuracy;
4: the controller 22 controls the AD converter to enable the AD converter for 50 times, performs mean square error operation and median filtering on the three signal values, and then performs proportional operation to obtain the percentage of the current displacement to the total movable displacement;
5: the controller 22 calculates the bridge displacement according to the percentage obtained in the step 4;
6: the controller 22 sends the bridge displacement to the server through the communication module 23, and sends the bridge displacement to the control chip as a feedback signal, and the control chip receives the feedback signal and then times again.
In light of the above, the present invention is not limited to the above embodiments, and various changes and modifications can be made by the worker without departing from the scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. The utility model provides a bridge displacement detection device, includes power, detection sensor, signal processing module, controller and communication module, its characterized in that: the detection sensor comprises a base and a sliding block which horizontally moves relative to the base, one side of the upper support, which is far away from the first transverse plate, is connected with the base, one side of the lower support, which is far away from the second transverse plate, is movably connected with two third straight rods, and the two third straight rods are connected with the sliding block;
the detection sensor is electrically connected with the signal processing module, and the controller is respectively electrically connected with the power supply, the signal processing module and the communication module;
the power supply provides working voltage;
the detection sensor is configured to detect bridge displacement;
the signal processing module converts the analog quantity output by the detection sensor into digital quantity;
the controller is used for carrying out operation processing on the digital quantity output by the signal processing module, and the controller is used for remotely sending the bridge displacement to the server through the communication module.
2. The bridge displacement detection device of claim 1, wherein: the RTC clock module comprises a control chip with low power consumption and a central control communication module, and the control chip wakes up the controller through the central control communication module.
3. The bridge displacement detection device of claim 1, wherein: the upper bracket is connected with a control box.
4. The bridge displacement detection device of claim 1, wherein: the controller is electrically connected with the PGA circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921529610.5U CN210242686U (en) | 2019-09-12 | 2019-09-12 | Bridge displacement detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921529610.5U CN210242686U (en) | 2019-09-12 | 2019-09-12 | Bridge displacement detection device |
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| CN210242686U true CN210242686U (en) | 2020-04-03 |
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| CN201921529610.5U Expired - Fee Related CN210242686U (en) | 2019-09-12 | 2019-09-12 | Bridge displacement detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455175A (en) * | 2019-09-12 | 2019-11-15 | 无锡市高桥检测科技有限公司 | A kind of bridge displacement detection device and method |
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2019
- 2019-09-12 CN CN201921529610.5U patent/CN210242686U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455175A (en) * | 2019-09-12 | 2019-11-15 | 无锡市高桥检测科技有限公司 | A kind of bridge displacement detection device and method |
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Granted publication date: 20200403 |