CN217688687U - Concrete chloride ion sensor - Google Patents
Concrete chloride ion sensor Download PDFInfo
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- CN217688687U CN217688687U CN202123333765.1U CN202123333765U CN217688687U CN 217688687 U CN217688687 U CN 217688687U CN 202123333765 U CN202123333765 U CN 202123333765U CN 217688687 U CN217688687 U CN 217688687U
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Abstract
The utility model discloses a concrete chloride ion sensor, including detection mechanism, energy supply mechanism and controller, the controller is connected with detection mechanism and energy supply mechanism respectively, energy supply mechanism includes sheetmetal and energy storage electric capacity, the sheetmetal is connected with controller and energy storage electric capacity respectively as the positive negative pole of energy supply mechanism, and concrete chloride ion sensor fixes on the reinforcing bar of waiting to be under construction the part, and the slurry after pouring reacts for the concrete chloride ion sensor energy supply with the sheetmetal, and the controller will detect data and transmit through the reinforcing bar. The utility model does not need the power supply of the battery and the external power supply, and generates current by oxidation-reduction reaction of the metal sheet in the cement, thereby avoiding the defect of special connection of the power line; the signal interface is directly connected to the steel bar to lead out the signal without specially leading out a lead to read the detection data.
Description
Technical Field
The utility model relates to a concrete chloride ion detects technical field, especially relates to a concrete chloride ion sensor.
Background
Concrete durability refers to the ability of concrete to maintain strength and appearance integrity for extended periods of time under working conditions, against the effects of various damaging elements. In marine concrete, chloride ions can adversely affect concrete and steel bars, reducing the overall durability of the concrete. The mechanism is as follows: in an environment with high chloride ion content, the steel bar is corroded, and corrosion products can expand to cause the damage of a concrete structure, so that the concrete provides standard load and cannot maintain the safety and stability in a specified age.
Therefore, the detection of the concentration of the chloride ions in the concrete is very important work, and the basis can be provided for the durability maintenance of the concrete structure by periodically detecting the concentration of the chloride ions in the concrete. The control of concrete chloride ions is generally to form a test block during design and test the electric flux or the diffusion coefficient of the chloride ions (see national standard of test method standard for long-term performance and durability of ordinary concrete (GB/T50082)), so as to predict the service life of the concrete, but the concentration of the chloride ions in the concrete after service cannot be monitored. At present, two methods exist for detecting chloride ions after concrete service: 1. destructive detection: the method mainly comprises the steps of sampling through a drill hole, detecting electric flux or chloride ion diffusion coefficient of a sample, comparing with the design time, and detecting the chloride ion concentration of the concrete sampled through the drill hole through a chemical method after the concrete sampled through the drill hole is ground.
2. Non-destructive testing: the method mainly comprises the step of detecting in real time by embedding a chlorine ion detector, wherein the detector can read chlorine ion concentration data in a wired or wireless mode. The wireless sensors are generally powered by a battery (active) or wirelessly.
However, at present, the two detection methods have the following disadvantages: 1. destructive detection: the method belongs to destructive detection, needs drilling and sampling at regular time, has large workload, and can generate certain damage to the structure although the concrete can be backfilled after drilling; this method cannot be monitored in real time. 2. Non-destructive testing: although the method cannot damage the concrete structure, the method also has certain defects, such as the wired sensor needs to maintain wiring, and the installation difficulty of the sensor is higher; if the wireless sensor is powered by a battery, the cost of the sensor is high, if the cost is low, the wireless sensor is limited by the capacity of the battery, and the detection times are limited; if a wireless power supply sensor is adopted, wireless power supply equipment needs to be equipped, and when the volume of a concrete structure is large, power supply cannot penetrate a deep concrete area, so that effective power supply cannot be carried out on the inside.
The above-mentioned drawbacks of the prior art result in that the chloride ion concentration of a concrete structure cannot be monitored at a low cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a concrete chloride ion sensor, including detection mechanism, energy supply mechanism and controller, the controller is connected with detection mechanism and energy supply mechanism respectively, energy supply mechanism includes sheetmetal and energy storage electric capacity, the sheetmetal is connected with controller and energy storage electric capacity respectively as energy supply mechanism's positive negative pole, and concrete chloride ion sensor fixes on the reinforcing bar of waiting to construct the part, and the slurry after pouring is concrete chloride ion sensor energy supply with the sheetmetal reaction, and the controller will detect data and transmit through the reinforcing bar.
Specifically, the detection mechanism is an Ag/AgCl chloride ion sensor, and the Ag/AgCl chloride ion sensor is connected with the controller.
Specifically, the metal sheet is one or more of a magnesium sheet, a copper sheet, an aluminum sheet, a nickel sheet and an iron sheet.
Specifically, the metal sheet adopts a copper sheet as the anode of the energy supply mechanism, and the copper sheet is connected with the anode of the controller through a lead; the metal sheet adopts the aluminum sheet as the negative pole of energy supply mechanism, the aluminum sheet is connected with the negative pole of controller through the wire.
Specifically, the metal sheet is connected in parallel with the energy storage capacitor.
Specifically, one surfaces of the copper sheet and the aluminum sheet are coated with graphite, and the surfaces coated with the graphite are opposite.
Specifically, the controller adopts a low-power consumption MCU core board, and the MCU core board adopts one of MSP430, TMS, STM32 and ESP8266.
Specifically, the controller is connected with the metal sheet through a clamp.
The beneficial effects of the utility model reside in that: the power is supplied by a battery and an external power supply, and the metal sheet is used for generating oxidation-reduction reaction in the cement to generate current, so that the defect of specially connecting a power line is avoided; the special lead-out wire is not needed to read the detection data, and the signal can be led out only by directly connecting the signal interface to the steel bar, so that the concrete chloride ion sensor can be placed at a deeper position.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the circuit connection of the present invention;
FIG. 3 is a flow chart of the chloride ion detection of the present invention;
in the figure, 1-copper sheet, 2-aluminum sheet, 3-fixture, 4-controller, 5-antenna, 6-Ag/AgCl chloride ion sensor and 7-double-layer farad capacitor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Example 1:
referring to fig. 1-2, a concrete chloride ion sensor, including detection mechanism, energy supply mechanism and controller 4, controller 4 is connected with detection mechanism and energy supply mechanism respectively, energy supply mechanism includes sheetmetal and energy storage capacitor, the sheetmetal is connected with controller 4 and energy storage capacitor respectively as the positive negative pole of energy supply mechanism, and concrete chloride ion sensor fixes on the reinforcing bar of waiting to construct the part, and the slurry after pouring is the sensor energy supply with the sheetmetal reaction, and controller 4 will detect data and transmit through the reinforcing bar.
Further, the detection mechanism is an Ag/AgCl chloride ion sensor 6, and the Ag/AgCl chloride ion sensor 6 is connected with the controller 4.
Further, the Ag/AgCl chloride ion sensor 6 is welded on a PCB of the controller 4 and is connected with an analog-to-digital conversion (ADC) port of the controller 4.
Further, the utility model discloses do not use battery or external power source, and adopt the positive negative pole of sheetmetal as the power, adopt energy storage electric capacity deposit electric energy.
Furthermore, the metal sheet is one or more of a magnesium sheet, a copper sheet, an aluminum sheet, a nickel sheet and an iron sheet.
Preferably, the copper sheet 1 is adopted as the anode of the energy supply mechanism, and the copper sheet 1 is connected with the anode of the controller 4 through a lead; the sheetmetal adopts aluminum sheet 2 as the negative pole of energy supply mechanism, aluminum sheet 2 is connected with controller 4's negative pole through the wire.
Furthermore, the copper sheet 1 and the aluminum sheet 2 are connected with the energy storage capacitor in parallel.
Furthermore, the energy storage capacitor is one of a ceramic capacitor, a thin film capacitor, a farad capacitor or a tantalum capacitor.
Preferably, the energy storage capacitor adopts a double-layer farad capacitor 7, the capacity of the double-layer farad capacitor 7 is 10mF-1F, and the withstand voltage level is 2.5V-6.3V.
Furthermore, the areas of the copper sheet 1 and the aluminum sheet 2 are both 9cm 2 -100cm 2 The thickness is 1mm-3mm.
Furthermore, the copper sheet 1 and the aluminum sheet 2 are both polished on both sides by 400-600 mesh sand paper, and one sides of the copper sheet 1 and the aluminum sheet 2 are both coated with graphite.
Further, the distance between the copper sheet 1 and the aluminum sheet 2 is 1cm-10cm, and the surfaces coated with graphite are arranged oppositely.
Furthermore, the graphite coating method adopts one of dry graphite spray or graphite conductive adhesive.
Further, the controller 4 adopts a low-power consumption MCU core board, and the MCU core board adopts one of MSP430, TMS, STM32 and ESP8266.
Preferably, the controller 4 employs an ESP8266.
Further, the controller 4 connects the copper sheet 1 and the aluminum sheet 2 via the fixture 3, respectively.
Further, the antenna 5 of the controller 4 is welded to the reinforcing steel bar through a wire.
Referring to fig. 3, the detection method of the present invention includes the following steps:
s1: metal sheet treatment: polishing the copper sheet 1 and the aluminum sheet 2 smoothly by using 400-mesh sand paper, spraying graphite on one surfaces of the copper sheet 1 and the aluminum sheet 2, and airing for later use;
s2: according to the thickness of the copper sheet 1, the aluminum sheet 2 and the controller 4, polylactic acid is used as raw materials, the 3D printing fixture 3 is used for clamping the copper sheet 1, the aluminum sheet 2 and the controller 4, the copper sheet 1 is connected to the anode of the controller 4 through a lead, the aluminum sheet 2 is connected to the cathode of the controller 4 through a lead, the anode and the cathode of the controller 4 are connected in parallel through a double-layer farad capacitor 7, the Ag/AgCl chloride ion sensor 6 is welded to the controller 4 and is connected with an analog-to-digital conversion interface of the controller 4, and the preparation of the concrete chloride ion sensor is completed;
s3: the prepared concrete chloride ion sensor is fixed to a steel bar of a part to be constructed, the antenna 5 of the controller 4 is welded to the steel bar, after concrete is poured, slurry flows between the copper sheet 1 and the aluminum sheet 2, the concrete chloride ion sensor starts to work, a signal interface is connected to the steel bar, and data reading is completed.
Further, taking an example of preparing a concrete chloride ion sensor by using an ESP8266, a specific preparation method and a detection method thereof comprise the following steps:
metal sheet treatment: the method comprises the following steps of (1) taking a copper sheet 1 with the thickness of 2 x 50 x 50mm as a positive electrode, taking an aluminum sheet 2 with the thickness of 2 x 50 x 50mm as a negative electrode, respectively polishing the copper sheet 1 and the aluminum sheet 2 to be smooth by 400-mesh sand paper, respectively spraying graphite on one surfaces of the copper sheet 1 and the aluminum sheet 2 by using graphite dry pattern layer spray painting, and airing for later use;
3D prints fixture 3: according to the thicknesses of the copper sheet 1, the aluminum sheet 2 and the controller 4, polylactic acid is used as a raw material, the clamp 3 is printed, and the controller 4, the copper sheet 1 and the aluminum sheet 2 are clamped;
the controller 4 connects the Ag/AgCl chloride sensor 6 to the ADC port using the ESP12E based MCU;
connecting the copper sheet 1 to the positive pole (+) of the controller 4 by a lead, connecting the aluminum sheet 2 to the negative pole (-) of the controller 4 by a lead, and connecting the positive pole and the negative pole on the controller 4 in parallel by a 0.1F double-layer farad capacitor 7;
the fixture 3 is stuck in the steel bar by using sealing silica gel, and the antenna 5 of the controller 4 is connected to the steel bar by using a lead by using an electric soldering iron;
after the concrete is poured, the slurry flows into the space between the copper sheet 1 and the aluminum sheet 2, the current starts to be generated, the concrete chloride ion sensor starts to work, and another ESP8266 chip can be used for reading detection data from the steel bar connected with the antenna 5.
It should be noted that, for the sake of simplicity, the foregoing embodiments are described as a series of combinations of acts, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
Furthermore, the terms "connected" and "disposed" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "connected" or "provided" may explicitly or implicitly include one or more of that feature. Furthermore, the terms "connected," "disposed," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.
In the above embodiments, the basic principle and the main features of the present invention and the advantages of the present invention have been described. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the present invention, which should be construed as within the scope of the appended claims.
Claims (7)
1. The utility model provides a concrete chloride ion sensor, a serial communication port, includes detection mechanism, energy supply mechanism and controller, the controller is connected with detection mechanism and energy supply mechanism respectively, energy supply mechanism includes sheetmetal and energy storage capacitor, the sheetmetal is connected with controller and energy storage capacitor respectively as the positive negative pole of energy supply mechanism, and concrete chloride ion sensor fixes on the reinforcing bar of waiting to construct the part, and the slurry after pouring is the concrete chloride ion sensor energy supply with the sheetmetal reaction, and the controller will detect data and transmit through the reinforcing bar.
2. The concrete chloride ion sensor of claim 1, wherein the detection mechanism is an Ag/AgCl chloride ion sensor, and the Ag/AgCl chloride ion sensor is connected to the controller.
3. The concrete chloride ion sensor of claim 1, wherein the metal sheet adopts a copper sheet as a positive electrode of the energy supply mechanism, and the copper sheet is connected with a positive electrode of the controller through a lead; the metal sheet adopts the aluminum sheet as the negative pole of energy supply mechanism, the aluminum sheet is connected with the negative pole of controller through the wire.
4. The concrete chloride ion sensor of claim 1, wherein the metal plate is connected in parallel with the energy storage capacitor.
5. The concrete chloride ion sensor of claim 3, wherein the copper sheet and the aluminum sheet are graphite coated on one side and the graphite coated side is opposite.
6. The concrete chloride ion sensor of claim 1, wherein the controller employs a low power consumption MCU core board, the MCU core board employing one of MSP430, TMS, STM32 and ESP8266.
7. The concrete chloride ion sensor of claim 1 or 6, wherein the controller is connected to the metal sheet by a clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123333765.1U CN217688687U (en) | 2021-12-28 | 2021-12-28 | Concrete chloride ion sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123333765.1U CN217688687U (en) | 2021-12-28 | 2021-12-28 | Concrete chloride ion sensor |
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| Publication Number | Publication Date |
|---|---|
| CN217688687U true CN217688687U (en) | 2022-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123333765.1U Active CN217688687U (en) | 2021-12-28 | 2021-12-28 | Concrete chloride ion sensor |
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| CN (1) | CN217688687U (en) |
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2021
- 2021-12-28 CN CN202123333765.1U patent/CN217688687U/en active Active
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