CN204694666U - The step test instrument of reinforcing bar coaxial cable structure one dimension concrete health monitoring - Google Patents
The step test instrument of reinforcing bar coaxial cable structure one dimension concrete health monitoring Download PDFInfo
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- CN204694666U CN204694666U CN201520402418.5U CN201520402418U CN204694666U CN 204694666 U CN204694666 U CN 204694666U CN 201520402418 U CN201520402418 U CN 201520402418U CN 204694666 U CN204694666 U CN 204694666U
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- reinforcing bar
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Abstract
The utility model discloses the step test instrument of a kind of reinforcing bar coaxial cable structure one dimension concrete health monitoring.Step test instrument is made up of step generator, signal amplification circuit, analog to digital conversion circuit, microprocessor, two output ports of step generator are in parallel with signal amplification circuit short circuit, analog to digital conversion circuit, microprocessor are linked in sequence successively at signal amplification circuit, and microprocessor is connected with step generator.During test, the inner wire of one dimension concrete one end and the port short circuit of outer conductor and step test instrument.Reinforcing bar concentric cable one dimension concrete has inside and outside two conductors, and axle center is inner wire.Its inner wire is a reinforcing bar or is less than the stirrup of outer conductor diameter by some diameters similar to outer conductor structure and vertical muscle combines, and outer conductor is the one dimension concrete outer ring be combined into by some stirrups, vertical muscle.This step test instrument structure is simple, easy to use, data directly perceived, can Timeliness coverage concrete pathology forecasting and warning.
Description
(1) technical field
The utility model belongs to building materials detecting instrument, relates to concrete quality test, particularly tests the concrete one dimension crack of reinforcing bar cCoax construction.
(2) background technology
Concrete is a kind of important construction material being widely used in building construction, science of bridge building, hydraulic engineering etc., and concrete health detection and monitoring instrument ensure the permanent technological means run of concrete safety.The prediction of concrete health, forecast, diagnosis are badly in need of one of main bugbear of capturing in the world now.Highway, bridge, dam and other work covil construction, all need to carry out regular or real-time health detection and monitoring.But existing RC axial loading column means can't adapt to the needs of development completely.The patent No. is ZL 2,006 100200932.8 Chinese patent " concrete damage detection method and equipment based on impedance imaging ", to detect for the purpose of concrete damage, have employed the technology of impedance imaging, achieves better effects.But in actual use, because detecting electrode and concrete can not be well compatible, there is certain application limitation.
The patent No. is the Chinese patent " taking reinforcing bar as the concrete crack detector of electrode " of ZL 2,012 1 0199249.0, utilizes the relation between emitting electrode pumping signal and the response signal of receiving electrode, judges distress in concrete.The main fracture detection of the present invention, does not detect other abnormal behaviour.
The patent No. is the Chinese patent " taking reinforcing bar as concrete monitor and the monitor and detection method of electrode " of ZL 2,013 1 0029782.7, utilizes reinforcing bar to do electrode, detects the electrical quantity between two reinforcing bar electrodes, judge distress in concrete.This invention proposes a kind of method for supervising, but does not provide different method of testings according to the different structure of reinforced concrete.
(3) utility model content
The purpose of this utility model is on the basis providing one dimension concrete health monitoring testing tool, provide the one dimension distress in concrete testing tool based on reinforcing bar cCoax construction.Real-Time Monitoring one dimension concrete health status, Timeliness coverage concrete pathology forecasting and warning.
The purpose of this utility model reaches like this:
Step test instrument is made up of step generator, signal amplification circuit, analog to digital conversion circuit, microprocessor, two output ports of step generator are in parallel with signal amplification circuit short circuit, analog to digital conversion circuit, microprocessor are linked in sequence successively at signal amplification circuit, and microprocessor is connected with step generator.
Reinforcing bar concentric cable one dimension concrete has inside and outside two conductors, and axle center is inner wire.During test, the step generator port short circuit in the inner wire of one dimension concrete one end and outer conductor and step test instrument.
Tested reinforcing bar concentric cable one dimension concrete has inside and outside two conductors, and axle center is inner wire, and its inner wire is reinforcing bar; Outer conductor is the one dimension concrete reinforcement outer ring be combined into by some stirrups, vertical muscle.
Described inner wire is reinforcing bar, refers to a reinforcing bar.
Described inner wire is reinforcing bar, refer to that inner wire is combined by some stirrups similar to outer conductor structure and vertical muscle, and the stirrup diameter of inner wire is less than the stirrup diameter of outer conductor.
Microprocessor in described step test instrument is on-site programmable gate array FPGA
Described step test instrument microprocessor is digital signal processing circuit DSP.
Good effect of the present utility model is:
1, detect one dimension concrete health status, and make quality evaluation in time to buildings, the building concrete security situation of the people's livelihood that count for much such as particularly building construction, science of bridge building, hydraulic engineering makes accurate judgment.
2, can Real-Time Monitoring one dimension concrete health status, Timeliness coverage concrete pathology forecasting and warning, eliminate security incident before generation, avoid major accident to occur.
3, step test instrument structure is simple, easy to use and reliable, data intuitive display.
(4) accompanying drawing explanation
Fig. 1 is the one dimension concrete schematic diagram of circular reinforcing bar cCoax construction.
The one dimension concrete schematic diagram of Fig. 2 to be cross section be square reinforcing bar cCoax construction.
Fig. 3 is step test instrument structural representation.
Fig. 4 is the concrete annexation schematic diagram of step test instrument and tested one dimension.
Fig. 5 is the step generator circuit diagram in step test instrument.
Fig. 6 is the signal amplification circuit figure in step test instrument.
Fig. 7 ~ 9 are D/A converting circuits in step test instrument, and wherein, Fig. 7 is analog to digital conversion clock driver circuit figure,
Fig. 8 is simulating signal input difference driving circuit, Fig. 9 D/A converter module circuit diagram.
Figure 10 ~ Figure 15 is the circuit diagram that in step test instrument, microprocessor adopts on-site programmable gate array FPGA.
In figure, 1 axle center, 2-1 ~ 1-n circular stirrups, 3-1 ~ 3-m indulge muscle, 4-1 ~ 4-n square stirrup, 5 step generator, 6 signal amplification circuits, 7 analog to digital conversion circuits, 8 microprocessors, 9-1,9-2 connectivity port, 10 step test instrument, 11 tested one dimension concrete, 12 outer conductors, 13 inner wires.
(5) embodiment
Embodiment 1.
See accompanying drawing 1.The tested one dimension concrete section of this example is circular.Axle center is inner wire, is a reinforcing bar.Outer conductor is combined by circular stirrups, vertical muscle.
Inner wire also can be combined by the circular stirrups similar to outer conductor structure, vertical muscle, but circular stirrups diameter is less than outer conductor.
Embodiment 2.
See accompanying drawing 2.The tested one dimension concrete section of this example is square.Axle center is inner wire, is a reinforcing bar.Outer conductor is combined by square stirrup, vertical muscle.
Inner wire also can be combined by the square stirrup similar to outer conductor structure, vertical muscle, but square stirrup diameter is less than outer conductor.
Embodiment 3.
See accompanying drawing 4,5,6.
No matter which kind of shape tested one dimension concrete section is, all have inside and outside two conductors at one dimension concrete, axle center is inner wire.The port that the utility model utilizes the concrete inner wire of concentric cable one dimension and outer conductor to be connected to step test instrument is tested.
When using the test of step test instrument, the inner wire of one dimension concrete one end and outer conductor short circuit are connected in parallel on step generator port 9-1 of step test instrument, test according to the method for step signal time delay.Under micro-processing controls, step generator sends periodic step signal, and signal frequency is less than 1 megahertz.
Signal amplification circuit amplifies the signal of two connectivity ports, and the signal after amplification gives microprocessor after analog to digital conversion circuit transfers simulating signal to digital signal.Microprocessor can be digital signal processing circuit (DSP), also can be field programmable gate array (FPGA).This example have employed on-site programmable gate array FPGA.Microprocessor is as follows to data handling procedure:
1) absolute value of adjacent data difference, is calculated;
2) the absolute value sum of multiple adjacent data difference, is calculated, when this absolute value sum is greater than one in advance through testing the threshold value determined and the maximal value of absolute value sum value for periphery adjacent data difference, there is the sampling instant of this value in record, and is transition point by this moment definition;
3), judge that step signal sends the time, determine that certain transition point is step signal starting point: the transition point different from step signal starting point is signal reflex point, when signal reflex point number is more than or equal to 2, judge that one dimension concrete has damage;
4), when signal reflex point number is more than or equal to 2, calculate the analog to digital conversion sampling number between signal reflex point and step signal starting point, this sampling number is multiplied by the sampling period and is exactly the time t of light velocity propagation between signal reflex point and step signal starting point divided by 2, the light velocity is multiplied by with time t, obtain the distance between signal reflex point to step signal starting point, this distance is exactly the distance between impaired loci or the detected concrete other end to test interface.Just in good time, effectively detected concrete quality can be tested out by the output damage data of microprocessor.
See Fig. 3.
Step test instrument is made up of step generator 5, signal amplification circuit 6, analog to digital conversion circuit 7, microprocessor 8.Two output ports 9-1,9-2 of step generator 5 are in parallel with signal amplification circuit 6 short circuit, and analog to digital conversion circuit 7, microprocessor 8 are linked in sequence successively on signal amplification circuit 6, and microprocessor is connected with step generator.
Microprocessor can use on-site programmable gate array FPGA, or digital signal processing circuit DSP.The present embodiment adopts on-site programmable gate array FPGA.
In step generator circuit diagram in the step test instrument of Fig. 5, U7:TS5A4596; U8:TS5A4597 is produced by TEXAS INSTRUMENTS company of the U.S..
In signal amplification circuit figure in the step test instrument of Fig. 6, U4:AD8045, is produced by ANALOGDEVICES company of the U.S..
Fig. 7 ~ 9 are D/A converting circuits in step test instrument, wherein, in Fig. 9 analog to digital conversion clock driver circuit figure, and U3: crystal oscillator.
In Fig. 7 simulating signal input difference driving circuit, U6:ADA493, is produced by ANALOG DEVICES company of the U.S..
Fig. 8 D/A converter module U5:AD9643, is produced by ANALOG DEVICES company of the U.S..
In this example, the microprocessor in step test instrument adopts on-site programmable gate array FPGA.
Figure 10 ~ Figure 15 gives the circuit diagram adopting on-site programmable gate array FPGA.In figure, U1:XC3S1200, U2:XCF04, Xilinx company of the U.S. produces.
Claims (6)
1. a step test instrument for reinforcing bar coaxial cable structure one dimension concrete health monitoring, is characterized in that:
Step test instrument is made up of step generator (5), signal amplification circuit (6), analog to digital conversion circuit (7), microprocessor (8), two output ports (9-1,9-2) of step generator (5) are in parallel with signal amplification circuit (6) short circuit, analog to digital conversion circuit (7), microprocessor (8) are linked in sequence successively on signal amplification circuit (6), and microprocessor is connected with step generator;
Reinforcing bar coaxial cable structure one dimension concrete has inside and outside two conductors, and axle center is inner wire, during test, and the step generator port short circuit in the inner wire of one dimension concrete one end and outer conductor and step test instrument.
2. the step test instrument of reinforcing bar coaxial cable structure one dimension concrete health monitoring as claimed in claim 1, is characterized in that: tested reinforcing bar concentric cable one dimension concrete has inside and outside two conductors, and axle center is inner wire, and its inner wire is reinforcing bar; Outer conductor is the one dimension concrete reinforcement outer ring be combined into by some stirrups, vertical muscle.
3. the step test instrument of reinforcing bar coaxial cable structure one dimension concrete health monitoring as claimed in claim 2, is characterized in that: described inner wire is reinforcing bar, refers to a reinforcing bar.
4. the step test instrument of reinforcing bar coaxial cable structure one dimension concrete health monitoring as claimed in claim 2, it is characterized in that: described inner wire is reinforcing bar, refer to that inner wire is combined by some stirrups similar to outer conductor structure and vertical muscle, and the stirrup diameter of inner wire is less than the stirrup diameter of outer conductor.
5. the step test instrument of reinforcing bar coaxial cable structure one dimension concrete health monitoring as claimed in claim 1, is characterized in that: described microprocessor (8) is on-site programmable gate array FPGA.
6. the step test instrument of reinforcing bar coaxial cable structure one dimension concrete health monitoring as claimed in claim 1, is characterized in that: described microprocessor (8) is digital signal processing circuit DSP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520402418.5U CN204694666U (en) | 2015-06-11 | 2015-06-11 | The step test instrument of reinforcing bar coaxial cable structure one dimension concrete health monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520402418.5U CN204694666U (en) | 2015-06-11 | 2015-06-11 | The step test instrument of reinforcing bar coaxial cable structure one dimension concrete health monitoring |
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| CN204694666U true CN204694666U (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520402418.5U Expired - Fee Related CN204694666U (en) | 2015-06-11 | 2015-06-11 | The step test instrument of reinforcing bar coaxial cable structure one dimension concrete health monitoring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974205A (en) * | 2016-07-22 | 2016-09-28 | 四川大学 | Coaxial one-dimensional reinforced concrete member concrete dielectric constant measuring device and method |
| CN106018486A (en) * | 2016-07-22 | 2016-10-12 | 四川大学 | One-dimensional coaxial reinforced concrete member measuring device and method based on frequency domain reflection |
-
2015
- 2015-06-11 CN CN201520402418.5U patent/CN204694666U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105974205A (en) * | 2016-07-22 | 2016-09-28 | 四川大学 | Coaxial one-dimensional reinforced concrete member concrete dielectric constant measuring device and method |
| CN106018486A (en) * | 2016-07-22 | 2016-10-12 | 四川大学 | One-dimensional coaxial reinforced concrete member measuring device and method based on frequency domain reflection |
| CN105974205B (en) * | 2016-07-22 | 2018-08-14 | 四川大学 | Coaxial one-dimensional reinforced concrete member concrete dielectric constant measurement device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20180611 |