Anchor rod internal force wireless monitoring device and anchor rod fixing structure

Abstract

The utility model discloses an anchor rod internal force wireless monitoring device and an anchor rod fixing structure, the device comprises a full-bridge strain gauge structure, a control module, a wireless transmitting module, an antenna and a power supply module, the full-bridge strain gauge structure is electrically connected with the control module, the wireless transmitting module is electrically connected with the control module, and the antenna is electrically connected with the control module. The antenna is electrically connected with the wireless transmitting module, the power supply module is electrically connected with the strain gauge, the control module and the wireless transmitting module, the control module is used for calculating a voltage change value generated by the full-bridge strain gauge structure and generating a voltage change signal, and the wireless transmitting module is used for transmitting the voltage change signal outwards through the antenna. According to the utility model, a monitored slope stress change signal is wirelessly and remotely transmitted through the wireless transmitting module and the antenna, so that a worker can remotely receive and check monitoring information, and the monitoring efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the anchor rod internal force monitoring technical field especially relates to a kind of anchor rod internal force wireless monitoring device and anchor rod fixing structure. BACKGROUND

[0002] The stability of slope has great influence on highway, railway, water conservancy, civil engineering, water transportation and mining construction projects. Therefore, in order to ensure the normal operation of various construction projects, the deformation of the slope must be monitored to master the movement deformation and stability of the slope, and the slope must be reinforced when necessary to ensure the safety of various construction projects.

[0003] The existing slope monitoring device uses stress sheet to be pasted on the object inserted in the slope, and the stress change of the slope is calculated by analyzing the change signal collected by the stress deformation of the object. The stress sheet used in the existing slope monitoring device is composed of a simple resistance wire, and the resistance value change needs to be calculated by an external resistance value calculation circuit to convert the resistance value change into a voltage signal for the control chip to collect and calculate. After the monitoring device is installed on the slope, it is exposed to the outside and affected by various conditions, and the multiple component connection setting increases the risk of device damage. Moreover, after the existing monitoring device detects the stress change signal, it is generally transmitted by wired mode, which is not convenient for remote monitoring and dealing with severe geological conditions, increasing the monitoring difficulty and leading to low monitoring efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims at the above-mentioned problems, provides a kind of anchor rod internal force wireless monitoring device and anchor rod fixing structure, and the slope stress change signal monitored by wireless transmitting module and antenna is wirelessly sent at a long distance, so that staff can remotely receive and check monitoring information, and monitoring efficiency is improved.

[0005] In order to realize the above-mentioned utility model purposes, the technical scheme adopted by the utility model is as follows:

[0006] According to one aspect of the present application, a kind of anchor rod internal force wireless monitoring device is provided, including full-bridge strain gauge structure, control module, wireless transmitting module, antenna and power module;

[0007] The full-bridge strain gauge structure is electrically connected with the control module, the wireless transmitting module is electrically connected with the control module, the antenna is electrically connected with the wireless transmitting module, and the power module is electrically connected with the strain gauge, the control module and the wireless transmitting module respectively;

[0008] The control module is used for calculating a voltage change value generated by the full-bridge strain gauge structure and generating a voltage change signal; and the wireless transmitting module is used for transmitting the voltage change signal to the outside through the antenna.

[0009] Preferably, the full-bridge strain gauge structure comprises a bearing body and four stress gauges, the four stress gauges being fixedly arranged on the bearing body, and the four stress gauges being connected into a bridge circuit through wires.

[0010] Preferably, the control module comprises a control chip, the control chip being electrically connected with an output end of the bridge circuit, and the wireless transmitting module being electrically connected with the control chip.

[0011] Preferably, the wireless transmitting module comprises a wireless signal transmitting chip, the wireless signal transmitting chip being electrically connected with the control chip.

[0012] Preferably, the application further comprises an antenna connecting joint, the antenna connecting joint being electrically connected with the wireless signal transmitting chip, and the antenna being threadedly and electrically connected with the antenna connecting joint.

[0013] Preferably, the application further comprises an osmometer, the osmometer being electrically connected with the control chip.

[0014] Preferably, the application further comprises a pull-wire displacement sensor, the pull-wire displacement sensor being electrically connected with the control chip.

[0015] Preferably, the power module comprises a voltage reduction chip and a power connection joint, the voltage reduction chip being electrically connected with the control chip, the strain gauge and the wireless signal transmitting chip respectively, and the power connection joint being electrically connected with the voltage reduction chip.

[0016] Preferably, the application further comprises an anchor rod internal force wireless monitoring device, an iron ring, an anchoring piece, a clamping piece and a bracket assembly, a fixing hole penetrating through the iron ring is formed on the iron ring in an axial direction, the full-bridge strain gauge structure is pasted on an outer sidewall of the iron ring, the anchoring piece is fixedly connected with one end of the iron ring, the clamping piece is fixedly connected with the other end of the iron ring, the bracket assembly is sleeved outside the iron ring, and the control module and the wireless transmitting module are integrated on the bracket assembly.

[0017] Preferably, the bracket assembly comprises a polygonal bracket formed by a plurality of plate pieces connected in a head-to-tail mode, the polygonal bracket is sleeved outside the iron ring, a PCB board is connected to an outer side of the polygonal bracket through a support column, and the control module and the wireless transmitting module are integrated on the PCB board.

[0018] In conclusion, due to the adoption of the above technical solutions, the application has the following advantages:

[0019] 1、The utility model discloses a full bridge strain gauge structure is set up, and the change collection of resistance resistance value and the output of voltage signal caused by resistance resistance value are completed using the structure, do not need to increase resistance value calculation circuit extra, reduce the connection of spare part, make the monitoring device can cope with more complex environment, reduce the risk of device damage.

[0020] 2、The utility model discloses a wireless transmission module and antenna carry out wireless long -distance sending to the side slope stress change signal monitored, in order to remote receiving to see monitoring information for staff, improve monitoring efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0022] In the drawing, 1, full bridge strain gauge structure, 2, antenna connection joint, 3, power connection joint, 4, iron ring, 5, anchor, 6, clamping piece, 7, polygonal support, 8, support column, 9, PCB board. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, the following preferred embodiments are referred to the drawings and are given, and the utility model is further explained in detail. However, it is explained that, many details listed in the specification are only for making the reader have a thorough understanding of one or more aspects of the utility model, and even if there is no these specific details, the aspect of the utility model can be realized.

[0024] Please refer to Figure 1 The utility model provides a kind of anchor rod internal force wireless monitoring device and anchor rod fixed structure, technical scheme is as follows:

[0025] Embodiment 1

[0026] The utility model provides an anchor rod internal force wireless monitoring device, including full bridge strain gauge structure 1, control module, wireless transmitting module, antenna and power module, full bridge strain gauge structure 1 includes bearing body and four stress pieces, four stress pieces are fixedly arranged on bearing body, and four stress pieces are connected into bridge circuit through wire, bearing body can be metal sheet or plastic sheet, bearing body is pasted on the object to be measured, when the object is subjected to external force, at least one of four strain gauges will have slight change in shape and size, thereby causing its internal resistance value to change accordingly, the slight change will be amplified by bridge circuit and be converted into voltage or current signal and output, thereby realizing the accurate measurement of object strain, the voltage signal generated by bridge circuit is received through control module, and the specific stress change condition is calculated by control module, specifically, control module includes control chip, control chip adopts single-chip microcomputer STM32F103, control chip is electrically connected with the output end of bridge circuit and is used to receive the voltage signal generated by bridge circuit, analyzes and calculates voltage signal, obtains voltage change and thereby calculates the stress signal of object, control chip sends stress signal through wireless transmitting module and wirelessly remotely transmits signal so that staff can remotely receive and check monitoring information.

[0027] Wireless transmitting module includes wireless signal transmitting chip, and the model of wireless signal transmitting chip is UCODE IICSL3S4011, wireless signal transmitting chip is electrically connected with control chip and is used to receive stress signal transmitted by control chip, wireless signal transmitting chip is connected with antenna through antenna connecting head 2, and converts electric signal into electromagnetic wave for radiation to transmit remotely, specifically, antenna connecting head is electrically connected with wireless signal transmitting chip, and screw groove is formed in antenna connecting head 2, and antenna is screw and electrically connected with antenna connecting head 2, by setting wireless signal transmitting chip and antenna, stress signal collected is transmitted remotely through wireless signal transmitting chip and antenna, so that staff can remotely monitor and data analyze, timely master the operation of side slope, and the management flexibility and efficiency are greatly improved.

[0028] Further, the osmometer is also included, and the osmometer is electrically connected with the control chip. By converting the seepage pressure change in the slope into the expansion and contraction change of the displacement rod, and then converting the change into an electric signal through the displacement sensor, and transmitting the electric signal to the control chip, the control chip records and analyzes. The osmometer can monitor the change of the pore water pressure in the slope in real time, and provide an important basis for evaluating the slope stability. Through the data collected by the osmometer, the staff can timely understand the seepage condition in the slope, predict the possible landslide and other geological disasters, so as to take preventive measures in advance and ensure the safety of the project. After the osmometer collects the water pressure signal, the water pressure signal is transmitted to the control chip, the control signal calculates the change of the water pressure signal, generates the water pressure change signal, and transmits the water pressure change signal through the wireless signal transmitting chip and the antenna for long distance transmission, so that the staff can check the osmotic pressure data at any time and any place through the terminal equipment such as computer and mobile phone, timely master the operation of the slope, and greatly improve the flexibility and efficiency of management.

[0029] Further, the pull wire type displacement sensor is also included, and the pull wire type displacement sensor is electrically connected with the control chip. The slope pull wire type displacement sensor is a sensor specially used for monitoring the displacement change of the slope, which reflects the displacement of the slope by measuring the elongation or shortening of the steel wire rope connected to the slope. Based on the expansion and contraction change of the steel wire rope, when the slope displacement occurs, the steel wire rope connected to the slope will be elongated or shortened, and the mechanical deformation will be directly reflected on the displacement converter, and then converted into readable numerical information. The displacement converter converts the physical displacement into an electric signal output, and then receives and processes the electric signal through the control chip, and finally transmits to the monitoring center through the wireless signal transmitting chip antenna, so as to facilitate the staff to remotely view.

[0030] The entire detection device is powered by a power module, and the power module includes a voltage reduction chip and a power connection connector 3, the voltage reduction chip is electrically connected with the control chip, the strain gauge and the wireless signal transmitting chip respectively, and the power connection connector 3 is electrically connected with the voltage reduction chip.

[0031] Example 2

[0032] In order to provide stable support and feel the change of force, the application further discloses an anchor rod fixing structure, which comprises the anchor rod internal force wireless monitoring device, and further comprises a ferrule, an anchoring piece, a clamping piece and a support assembly on the basis of the anchor rod internal force wireless monitoring device. The ferrule is provided with a through ferrule fixing hole in the axial direction, and the fixing hole is used for providing the anchor rod to pass through. Three full-bridge strain gauges are arranged, and the three full-bridge strain gauges are uniformly arranged around the ferrule, and the full-bridge strain gauges are attached to the outer side wall of the ferrule, and are used for detecting the stress of the ferrule. The anchoring piece is fixedly connected with one end of the ferrule, and the clamping piece is fixedly connected with the other end of the ferrule. When the ferrule is under pressure, the strain gauge can timely feel the pressure of the ferrule, and the internal resistance wire of the strain gauge is pressed after feeling the pressure, the diameter is changed, the resistance is changed, the bridge circuit is used to convert the resistance change into a voltage signal, the change of the resistance is monitored, and the change of the anchoring force of the anchor rod is inferred.

[0033] The support assembly is arranged on the outer side of the ferrule and is sleeved on the outer side of the ferrule. The control module and the wireless transmitting module are integrated on the support assembly.

[0034] The support assembly comprises a polygonal support formed by a plurality of plate pieces connected in a head-to-tail mode, the polygonal support is sleeved on the outer side of the ferrule, and the outer side of the polygonal support is connected with a PCB board through a support column. The control module and the wireless transmitting module are integrated on the PCB board. The PCB board is carried through the polygonal support, a stable support structure is provided for the testing device, and the failure of the monitoring device is reduced.

[0035] The above only describes the preferred embodiments of the application, and it should be noted that, for those skilled in the art, some improvements and decorations can be made without departing from the principles of the application, and these improvements and decorations should also be regarded as the protection scope of the application.

Claims

1. A device for wireless monitoring of internal forces in an anchor rod, characterized in that, The full-bridge strain gauge structure, the control module, the wireless transmission module, the antenna and the power module are included. The full-bridge strain gauge structure is electrically connected with the control module, the wireless transmission module is electrically connected with the control module, the antenna is electrically connected with the wireless transmission module, and the power module is electrically connected with the strain gauge, the control module and the wireless transmission module respectively. The control module is used for calculating the voltage change value generated by the full-bridge strain gauge structure and generating a voltage change signal; and the wireless transmission module is used for transmitting the voltage change signal to the outside through the antenna.

2. The device according to claim 1, characterized in that: The full-bridge strain gauge structure includes a carrier and four stress pieces, the four stress pieces are fixedly arranged on the carrier, and the four stress pieces are connected into a bridge circuit through wires.

3. An anchor rod internal force wireless monitoring device according to claim 2, characterized in that: The control module includes a control chip, the control chip is electrically connected with the output end of the bridge circuit, and the wireless transmission module is electrically connected with the control chip.

4. The device according to claim 3, characterized in that: The wireless transmission module includes a wireless signal transmission chip, and the wireless signal transmission chip is electrically connected with the control chip.

5. An anchor rod internal force wireless monitoring device according to claim 4, characterized in that: An antenna connection joint is further included, the antenna connection joint is electrically connected with the wireless signal transmission chip, and the antenna is threadedly and electrically connected with the antenna connection joint.

6. The device according to claim 3, characterized in that: A osmometer is further included, and the osmometer is electrically connected with the control chip.

7. The device according to claim 3, characterized in that: A pull-wire displacement sensor is further included, and the pull-wire displacement sensor is electrically connected with the control chip.

8. The device according to claim 4, characterized in that: The power module includes a step-down chip and a power connection joint, the step-down chip is electrically connected with the control chip, the strain gauge and the wireless signal transmission chip respectively, and the power connection joint is electrically connected with the step-down chip.

9. An anchor rod fixation structure, characterized by: The anchor rod internal force wireless monitoring device includes the anchor rod internal force wireless monitoring device of any one of claims 1-6, an iron ring, an anchor, a clamping piece and a support assembly, a fixing hole penetrating through the iron ring is formed on the iron ring in an axial direction, the full-bridge strain gauge structure is attached to the outer sidewall of the iron ring, the anchor is fixedly connected to one end of the iron ring, the clamping piece is fixedly connected to the other end of the iron ring, the support assembly is sleeved outside the iron ring, and the control module and the wireless transmission module are integrated on the support assembly.

10. An anchor rod fixation structure as recited in claim 9, wherein: The support assembly includes a polygonal support formed by a plurality of plate pieces connected in a head-to-tail mode, the polygonal support is sleeved outside the iron ring, a PCB board is connected to the outer side of the polygonal support through a support column, and the control module and the wireless transmission module are integrated on the PCB board.

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