CN215935038U

CN215935038U - Bridge expansion joint monitoring communication equipment

Info

Publication number: CN215935038U
Application number: CN202122534758.1U
Authority: CN
Inventors: 姜圣镐
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-03-01
Anticipated expiration: 2031-10-21

Abstract

A bridge expansion joint monitoring communication device comprises a solar cell panel, a storage battery, a power switch, a single chip microcomputer module, a GPRS module and a short message module; the device is also provided with a detection mechanism and a monitoring circuit; the detection mechanism comprises supporting plates, a screw rod, a screw tube and a probe which are arranged together, the probe comprises a barrel, a sleeve, a force sensitive resistor, a spring, a guide rod, a top plate and a sealing cover which are arranged together, a piston is arranged at the other end of the guide rod, the sleeve is arranged at the side end of one of the supporting plates, the barrel is arranged in the sleeve, and a storage battery, a power switch, a monitoring circuit, a single chip microcomputer module, a GPRS module and a short message module are arranged in an element box and are electrically connected with the detection mechanism. When this novel bridge takes place and controls displacement or slope and influence driving safety, can the very first time for relevant managers' mobile phone propelling movement SMS to make its very first time master the site conditions, and then maintain or arrange as early as possible to the scene and forbid the vehicle current, reduced as far as possible and leaded to serious accident from this.

Description

Bridge expansion joint monitoring communication equipment

Technical Field

The utility model relates to the technical field of communication equipment, in particular to bridge expansion joint monitoring communication equipment.

Background

In the construction of roads, railway bridges and the like, the construction quality and the on-site geological conditions have great influence on the use of the bridges. In order to ensure the normal use of the bridge, particularly in some areas with poor geological conditions, workers are required to patrol the quality of the bridge on time (mainly to check the gap between the bridge and the bridge, whether the bridge is inclined or not, and the bridge have normal expansion joints), so that the problems existing in the bridge can be found at the first time for maintenance or the traffic can be interrupted as required, and safety accidents can be prevented. The manual inspection mode can not achieve real-time inspection, is influenced by factors such as responsibility, skills and experiences of inspection personnel, can not ensure the inspection effect, and has obvious defects particularly when the height of the bridge is very high and the inspection is performed in the manual mode. Moreover, the manual patrol requires on-site patrol, which not only brings inconvenience to patrol personnel, but also increases labor cost of a manager.

The mode of operating the unmanned aerial vehicle is adopted for patrol, although patrol personnel can patrol the high-height bridge on the ground, the cost is high, the patrol personnel is required to have the skills for operating the unmanned aerial vehicle and the patrol skills, the patrol personnel is required to operate the unmanned aerial vehicle to patrol on the site, the inconvenience is also brought to the patrol personnel, and the patrol cost is increased. In summary, it is necessary to provide a communication device that does not require manual inspection, has low cost, and can achieve better bridge quality monitoring.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of high cost, incapability of detecting the quality of the bridge in real time and the like caused by the limitation of the technology in the prior manual and unmanned aerial vehicle inspection modes, the utility model provides a bridge inspection device which has compact and simple structure, can be conveniently installed in the lower end of a gap between a bridge and a monitoring area, adopts a solar cell to supply electric energy and save energy, can normally send data of the related bridge to a remote monitoring end and know field data in real time by a mature internet data receiving and transmitting technology under the combined action of related mechanisms and circuits in application, when the bridge moves left and right or inclines to affect the driving safety, the short message can be pushed to the mobile phone of the relevant manager at the first time so as to master the site situation at the first time, and then the field is maintained as soon as possible or vehicles are arranged to be forbidden to pass, so that the bridge expansion joint monitoring communication equipment causing serious accidents is reduced as much as possible.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a bridge expansion joint monitoring communication device comprises a solar cell panel, a storage battery, a power switch, a single chip microcomputer module, a GPRS module and a short message module; it is characterized by also comprising a detection mechanism and a monitoring circuit; the detection mechanism comprises at least two support plates, a screw rod, a screw tube and a probe, wherein one end of the screw tube and one end of the screw rod are respectively arranged at the inner sides of the two support plates, and the other ends of the screw rod and the screw tube are connected through threads; the probe comprises a cylinder body, a sleeve, a force-sensitive resistor, a spring, a guide rod, a top plate and a sealing cover, wherein one end of the guide rod and one end of the top plate are installed together; the solar energy short message monitoring device comprises a sleeve, a detection mechanism, a solar cell panel, a storage battery, a power switch, a monitoring circuit, a single chip microcomputer module, a GPRS module and a short message module, wherein the sleeve is arranged at the side end of one support plate, the cylinder body is arranged in the sleeve, the detection mechanism is arranged in a gap between the lower ends of every two bridges, the solar cell panel is arranged in an illumination area, and the storage battery, the power switch, the monitoring circuit, the single chip microcomputer module, the GPRS module and the short message module are arranged in an element box; one end of the force sensitive resistor is electrically connected with the monitoring circuit and the signal input end of the singlechip module; the signal output end of the monitoring circuit is electrically connected with the signal input end of the short message module, and the signal output end of the singlechip module is electrically connected with the signal input end of the GPRS module.

Furthermore, the outer diameter of the cylinder body is smaller than the inner diameter of the sleeve, and cushion pads are mounted at the outer side ends of the two supporting plates.

Furthermore, the piston is contacted with a strain gauge of the force-sensitive resistor, the outer diameter of the piston is smaller than the inner diameter of the cylinder, and the piston is made of flexible materials.

Further, the monitoring circuit comprises a diode, an NPN triode, a resistor and an adjustable resistor which are electrically connected, the cathode of the diode is connected with one end of the adjustable resistor, the other end of the adjustable resistor is connected with the base electrode of the first NPN triode, the collector electrode of the first NPN triode is connected with one end of the resistor and the base electrode of the second NPN triode, and the emitting electrodes of the two NPN triodes are connected.

The utility model has the beneficial effects that: this neotype detection mechanism can be convenient for install between the expansion joint between two bridge lower extremes, can guarantee detection mechanism's stable installation through the interval between adjusting screw, the screwed pipe. In this is novel, through the horizontal interval of adjusting the probe, the roof left side end that enables the probe withstands the lower right-hand member of left end bridge, and then the effort acts on force sensing resistance foil gage. When the two bridges do not transversely displace or incline, the singlechip module and the GPRS module send gap data between the two related bridges for the far-end monitoring end, the far-end monitoring end can know the data of the bridges in real time, and when the bridge displaces left and right or inclines to influence the driving safety, the monitoring circuit can push short messages for mobile phones of related managers through the short message module at the first time so as to master the field situation at the first time, further maintain the field as soon as possible or arrange to prohibit vehicles from passing through, thereby reducing serious accidents caused by the situation as far as possible. Based on the above, the utility model has good application prospect.

Drawings

The utility model is further illustrated below with reference to the figures and examples.

FIG. 1 is an enlarged view of the whole and a part of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Detailed Description

As shown in fig. 1 and 2, a bridge expansion joint monitoring communication device includes a solar panel G1, a storage battery G2, a power switch S1, a single chip module a1, a GPRS module a2, and a short message module A3; the device is also provided with a detection mechanism and a monitoring circuit 1; the detection mechanism comprises two support plates 2, a screw rod 3, a screw tube 4 and a probe, wherein the left end of the screw tube 4 is transversely welded below the middle part of the right side end of the first support plate 2, a bearing sleeve 6 is arranged below the middle part of the left side end of the second support plate 2 through a screw rod nut, the right end of the screw rod 3 is tightly sleeved in a bearing inner ring of the bearing sleeve 6, the external thread at the left end of the screw rod 3 is screwed into the internal thread of the screw tube 4 to realize the connection of the two, and the middle part of the screw rod is provided with a locking nut 7; the probe comprises a hollow cylindrical barrel 51 with an open left end and a closed right end, a sleeve 52, a force-sensitive resistor RT, a spring 53, a guide rod 54, a circular top plate 55 and a sealing cover 56 with a guide hole in the middle, wherein the left end of the guide rod 54 is welded in the middle of the right end of the top plate 55, the spring 53 is sleeved outside the left end of the guide rod 54, the middle of the guide rod 54 is sleeved in the guide hole in the middle of the sealing cover 56, a cylindrical piston 57 is installed at the right end of the guide rod 54 through a nut, the piston 57 is positioned in the barrel 51, the sealing cover 56 is installed outside the left end of the barrel 51 through a thread, the force-sensitive resistor RT is welded on a circular circuit board, the circuit board is connected to the right end in the barrel 51 through glue, and a strain gauge of the force-sensitive resistor is positioned at the left part in the barrel 51; the lower end of the sleeve 52 is transversely welded in the middle of the upper end of the first supporting plate 2, the middle of the upper end of the sleeve 52 is provided with an internal thread opening, and a hand-operated screw 58 is screwed into the opening of the upper end of the sleeve; the barrel 51 is transversely sleeved in the sleeve 52 and fixed through the screw 58, the detection mechanism is installed in a gap (expansion joint) between the lower ends of every two bridges in a monitoring area, the outer side ends of the two supporting plates 2 are located between the lower ends of the two bridges, the solar cell panel G1 is obliquely installed on the upper portion of the left outer side end of a highway bridge or a railway bridge, the storage battery G2, the power switch S1, the monitoring circuit 1, the single chip microcomputer module A1, the GPRS module A2 and the short message module A3 are installed in the element box 6, the element box 6 is installed at the rear side end of the backlight surface of the solar cell panel G1, and a thin steel wire rope is installed on the outer side of a wire connected with the detection mechanism in parallel (the steel wire rope and the wire are sleeved in a thin hose together). When the top plate 55 is stressed to move rightwards, the elastic acting force of the spring 53 is overcome to push the piston 57 to move rightwards and the contact force of the force-sensitive resistor RT strain gauge is increased, the stress of the top plate 55 is small, and the elastic acting force of the spring 53 pushes the piston 57 to move leftwards and the contact force of the force-sensitive resistor RT strain gauge is reduced.

As shown in fig. 1 and 2, the outer diameter of the cylinder 51 is smaller than the inner diameter of the sleeve 52, and the left end of the sleeve 52 and the left end of the first support plate 2 are vertically arranged. The outer ends of the first and second supporting plates 2 are glued with a rubber pad 21 with a thickness of 2 cm. When the piston 57 is positioned at the left dead center in the cylinder, the right end of the piston is contacted with the strain gauge at the left end of the force-sensitive resistor RT, the outer diameter of the piston 57 is less than the inner diameter of the cylinder 51 by 2 mm, and the piston 57 is made of rubber (the thickness is 4 cm). The model of the solar cell panel G1 is 12V/1W; the battery G2 is a lithium battery of type 12V/4 Ah; the power switch S1 is a toggle power switch, and its operating handle is located outside the opening at the front end of the component box 6. The monitoring circuit comprises a diode VD, NPN triodes Q1 and Q2, a resistor R1 and an adjustable resistor RP2 which are connected through circuit board wiring, wherein the cathode of the diode VD is connected with one end of the adjustable resistor RP2, the other end of the adjustable resistor RP2 is connected with the base of a first NPN triode Q1, the collector of the first NPN triode Q1 is connected with one end of the resistor R1 and the base of a second NPN triode Q2, and the emitters of the two NPN triodes Q1 and Q2 are connected. A plurality of novel (monitoring between many bridges and the bridge) sets of this monitoring region can adopt same battery G2, solar cell panel G1, and the signal input part 3 feet of this novel monitoring circuit signal output part NPN triode Q2 projecting pole of a plurality of sets and SMS module A3 are connected through the wire.

As shown in fig. 1 and 2, two poles of the solar cell panel G1 and two poles of the storage battery G2 are respectively connected through leads, and the positive pole of the storage battery G2 is connected with one end of the power switch S1 through a lead. One end of the power switch S1 is connected with the other end of the monitoring circuit positive power input end resistor R1, the pin of the positive power input end 1 of the singlechip module A1, the pin of the positive power input end 1 of the GPRS module A2, the pin of the positive power input end 1 of the short message module A3 and one end of the force-sensitive resistor RT through leads. The other end of the force-sensitive resistor RT is connected with the anode of a diode VD at the signal input end of the monitoring circuit and the pin 3 at the signal input end of the singlechip module A1 through a lead. The negative electrode of the storage battery G2 is connected with an NPN triode Q1 emitter at the negative electrode power input end of the monitoring circuit, the pin 2 at the negative electrode power input end of the singlechip module A1, the pin 2 at the negative electrode power input end of the GPRS module A2 and the pin 2 at the negative electrode power input end of the short message module A3 through leads. The collector of the signal output end NPN triode Q2 of the monitoring circuit is connected with the pin 3 of the signal input end of the short message module A3 through a lead, and the signal output end of the single chip microcomputer module A1 is connected with the signal input end of the GPRS module A2 through an RS485 data line.

Fig. 1 and 2 show that the novel detection mechanism can be conveniently installed between the expansion joints at the middle parts of the lower ends of every two bridges, after installation, the outer ends of the two support plates 2 are located between the lower end gaps of the two bridges (in actual construction, the distance between the lower ends of the two bridges can be reserved as the expansion joints, when the bridges can be produced, a rectangular mounting groove is reserved in the middle part below the inner end of each bridge), during installation, the locking nuts 7 are loosened, when a worker rotates the screw rod 3 clockwise or anticlockwise, the screw rod 3 can drive one support plate 2 at the right end to move leftwards or rightwards, so that the distance between the outer ends of the two support plates 2 and the lower ends of the two bridges can be close to or open, effective installation and subsequent disassembly are facilitated, and the locking nuts 7 can be screwed after the outer ends of the two support plates 2 and the lower ends of the two bridges are tightly connected. After the fixing is completed, the worker moves the cylinder body 51 left or right along the sleeve 52 (screws the manual screw 58 after the cylinder body is in place), so that the left end of the top plate 55 of the probe props against the lower right end of the left end bridge, the compressed part of the right end of the piston props against the force-sensitive resistor RT strain gauge, the acting force acts on the force-sensitive resistor RT strain gauge, and after the power switch S1 is turned on, the whole machine is in a power-on working state. This novel solar cell panel G1 receives the illumination at ordinary times and produces the electric energy and charge for battery G2, has guaranteed overcast and rainy day and this novel ability normal work evening. At ordinary times, because the left end of the top plate 55 props against the lower end of a left-end bridge, the right end of the piston 57 (a rubber piston has a buffering effect) props against the left end of a force-sensitive resistor RT (a lead connected with the piston is led out through an opening in the middle of the rear part of the cylinder) strain gauge, a 12V power supply can enter a pin 3 of the single chip microcomputer module A1 and the anode of the diode VD after being subjected to voltage reduction and current limitation by the force-sensitive resistor RT, the resistance value of the force-sensitive resistor RT strain gauge is relatively small when the pressure applied to the force-sensitive resistor RT strain gauge is larger, and the signal voltage entering the pin 3 of the single chip microcomputer module A1 and the anode of the diode VD is relatively large, otherwise, the signal voltage is relatively small. In practical situations, when the movement distance of one or two bridges is enlarged due to various reasons (the distance between the upper ends of the two bridges and the roadbed material is filled at a certain height below the road surface, and the like, so that the movement is only enlarged but not reduced), the force applied to the force-sensitive resistor RT strain gauge by the piston 57 is reduced due to the reduction of the pressure applied to the piston 57, and the voltage of the 12V power supply, which is reduced by the force-sensitive resistor RT and limited by the current, enters the 3 pins of the single chip microcomputer module a1 and the voltage of the positive electrode of the diode VD is reduced. In this is novel, because cushion 21 is all installed to two backup pad outside ends, and fully contact with the bridge, therefore two bridges take place when the distance change is less than about 2 centimetres, and detection mechanism can not fall down from two bridges, because the wire that is connected with the component box is parallelly connected to have thin wire rope, even consequently detection mechanism falls down from between two bridges, because wire rope pulling effect, detection mechanism only can hang and can not fall ground damage subaerial. This is novel still can be fixed under right-hand member backup pad and the right-hand member bridge, therefore detection mechanism can not fall to the ground.

As shown in the figures 1 and 2, after a voltage signal output by the novel force-sensitive resistor RT detects that a distance between two bridges enters a signal input end of a single chip microcomputer module A1 (the content below the section is the existing mature Internet of things technology, the novel force-sensitive resistor RT monitors the distance transformation of the bridges by only utilizing the existing mature Internet of things data receiving, sending and displaying functions, and the data receiving, sending and displaying do not belong to the novel protection), the single chip microcomputer module A1 can convert the input analog voltage signal into a digital signal and output the digital signal to a signal input end of a GPRS module A2, the GPRS module A2 can transmit the digital signal through a wireless mobile network, based on the existing mature Internet of things technology, a remote related manager can master the distance data between two bridges specifically monitored on site in real time through related application in a personal smart phone or a PC (the distance data between every two bridges are respectively displayed through a plurality of display interfaces of the mobile phone or the PC), and a waveform diagram or a digital diagram displayed on the display interfaces are displayed The larger the moment is, the larger the moment received by the force-sensitive resistor RT is, namely the distance between the two bridges is proper, the smaller the waveform diagram or the smaller the number displayed on the display interface is, the smaller the moment received by the force-sensitive resistor RT is, namely the distance between the two bridges is relatively large, when the waveform diagram or the number is too small, the distance between the two bridges is very large, or a detection mechanism falls down from the lower ends of the two bridges, and the like), and the method plays a favorable technical support for making relevant measures for managers (for example, when the distance between the two bridges is monitored to be enlarged, the reason can be found on site in time).

As shown in fig. 1 and 2, in the monitoring circuit and the short message module a3, when the detection mechanism is located between two bridges, the two bridges do not have a small displacement gap, or do not have displacement but have a small distance enough to threaten the safety of the bridges (for example, 4 mm), and the force-sensitive resistor RT has a small resistance value when the acting force is large, at this time, the positive electrode of the 12V power supply is subjected to voltage reduction and current limitation by the force-sensitive resistor RT, the diode VD is unidirectionally conducted, and the voltage of the base electrode, which enters the NPN triode Q1, of the adjustable resistor RP2 is subjected to voltage reduction and current limitation and is higher than 0.7V, so that the collector electrode of the NPN triode Q1 is conducted to output a low level to enter the base electrode of the NPN triode Q2, the base electrode of the NPN triode Q2 has no proper forward bias, and then the pin 3 of the short message module a3 does not output a low level signal, and does not transmit a short message. When two bridges have large displacement gaps due to various reasons, the bridges are threatened to be safe, even a detection mechanism falls down from between the two bridges, and the acting force of a force sensitive resistor RT is small, the resistance value of the force sensitive resistor RT is large, at the moment, the positive electrode of a 12V power supply is subjected to voltage reduction and current limitation through the force sensitive resistor RT, a diode VD is in one-way conduction, an adjustable resistor RP2 is subjected to voltage reduction and current limitation and enters the base voltage of an NPN triode Q1 to be lower than 0.7V, then, the collector of the NPN triode Q1 is cut off, the low level is not output any more, the base of the NPN triode Q2 enters the base of the NPN triode Q2, the base of the NPN triode Q2 is subjected to voltage reduction and current limitation through a resistor R1, proper forward bias voltage is obtained from the positive electrode of the 12V power supply, the collector outputs the low level and enters the first negative trigger signal input end 3 pins of a short message module A3, then, under the action of an internal circuit of the short message module A3, a pre-stored short message is sent out through a wireless mobile network, and a mobile phone of a manager connected with the short message module A3 receives the short message, the scene situation can be mastered at first time, and then the scene can be maintained as soon as possible or vehicles are arranged to be forbidden to pass, so that serious accidents caused by the scene can be reduced as far as possible. Before this novel production, the technical staff need confirm adjustable resistance RP 2's resistance value, fix two backup pads of detection mechanism between two splint of anchor clamps and just push down not compressing tightly the cushion of two backup pads when specifically confirming, then the technical staff adjusts adjustable resistance RP 2's resistance value, just adjust NPN triode Q2 when ending, adjustable resistance RP 2's resistance value just adjusts and targets in place, (during the actual application, two bridge seams just exceed standard NPN triode Q2 will switch on), then disconnect power and measure adjustable resistance RP 2's resistance value, can directly adjust adjustable resistance RP 2's resistance value before follow-up batch production and target in place, or replace with same resistance fixed resistance, need not confirm again (this embodiment adjusts to about 2.3M). In fig. 2, the diode VD is model 1N 4007; model numbers of NPN triodes Q1 and Q2 are 9014 and 9103 respectively; the resistance of the resistor R1 is 47K; the specification of the adjustable resistor RP2 is 4M; the RT type of the force sensitive resistor is K-CUT; the GPRS module A3 is CAT1 DTU, and the finished GPRS module is provided with an RS485 data input port (two power input ends and one signal input end); the model of a main control chip of the singlechip module A2 is STC12C5A60S2, two analog signal access ends 3 and 4 pins are arranged on a finished product A2 of the singlechip module, and an RS485 data output port is arranged on a finished product A2 of the singlechip module. The type of the short message module A3 is GSM 800, the finished product of the short message alarm module has two

power input ends

1 and 2 pins and signal input ends 3-8 pins, after each signal input end inputs a low level signal, the finished product of the short message alarm module can send a short message through a wireless mobile network, the short message alarm module stores the short message, and after the low level signal is input into the signal input end 3 pin of the short message alarm module, the short message alarm module can send a short message.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, the embodiments do not include only one independent technical solution, and such description is only for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A bridge expansion joint monitoring communication device comprises a solar cell panel, a storage battery, a power switch, a single chip microcomputer module, a GPRS module and a short message module; it is characterized by also comprising a detection mechanism and a monitoring circuit; the detection mechanism comprises at least two support plates, a screw rod, a screw tube and a probe, wherein one end of the screw tube and one end of the screw rod are respectively arranged at the inner sides of the two support plates, and the other ends of the screw rod and the screw tube are connected through threads; the probe comprises a cylinder body, a sleeve, a force-sensitive resistor, a spring, a guide rod, a top plate and a sealing cover, wherein one end of the guide rod and one end of the top plate are installed together; the solar energy short message monitoring device comprises a sleeve, a detection mechanism, a solar cell panel, a storage battery, a power switch, a monitoring circuit, a single chip microcomputer module, a GPRS module and a short message module, wherein the sleeve is arranged at the side end of one support plate, the cylinder body is arranged in the sleeve, the detection mechanism is arranged in a gap between the lower ends of every two bridges, the solar cell panel is arranged in an illumination area, and the storage battery, the power switch, the monitoring circuit, the single chip microcomputer module, the GPRS module and the short message module are arranged in an element box; one end of the force sensitive resistor is electrically connected with the monitoring circuit and the signal input end of the singlechip module; the signal output end of the monitoring circuit is electrically connected with the signal input end of the short message module, and the signal output end of the singlechip module is electrically connected with the signal input end of the GPRS module.

2. The apparatus according to claim 1, wherein the outer diameter of the cylinder is smaller than the inner diameter of the sleeve, and the outer ends of the two support plates are provided with cushions.

3. The apparatus of claim 1, wherein the piston is in contact with the strain gauge of the force sensor, the piston has an outer diameter smaller than an inner diameter of the cylinder, and the piston is made of a flexible material.

4. The bridge expansion joint monitoring communication device according to claim 1, wherein the monitoring circuit comprises a diode, an NPN triode, a resistor and an adjustable resistor which are electrically connected, a cathode of the diode is connected with one end of the adjustable resistor, the other end of the adjustable resistor is connected with a base of the first NPN triode, a collector of the first NPN triode is connected with one end of the resistor and a base of the second NPN triode, and emitters of the two NPN triodes are connected.