CN205749357U - A kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument - Google Patents
A kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument Download PDFInfo
- Publication number
- CN205749357U CN205749357U CN201620680408.2U CN201620680408U CN205749357U CN 205749357 U CN205749357 U CN 205749357U CN 201620680408 U CN201620680408 U CN 201620680408U CN 205749357 U CN205749357 U CN 205749357U
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- China
- Prior art keywords
- test block
- test
- capacitance
- measuring instrument
- mounting table
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Abstract
A kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument, it includes test block mounting table, it is arranged on test block mounting table the two pieces of parallel metal sheets being parallel to each other, it is arranged on the instrument base below test block mounting table, it is provided with thermocouple sensor in test block mounting table, metallic plate is provided with capacitance measurement amplifying circuit, capacitance measurement amplifying circuit and thermocouple sensor are connected with measurement apparatus by data wire, control chip it is provided with in measurement apparatus, control chip input port is connected with capacitance measurement amplifying circuit and thermocouple sensor, the delivery outlet of control chip is connected with display.This utility model can solve the problem that concrete body can be damaged by the instrument of existing detection concrete freezing-thawing test test block ice content.
Description
Technical field
This utility model relates to a kind of measuring instrument, is specifically related to a kind of capacitance method concrete freezing-thawing test test block ice containing measuring
Amount instrument.
Background technology
The analytical tool kind detected currently for the water content of material is a lot, and method is also not quite similar, but for inspection
Survey concrete freezing-thawing test test block ice content instrument the most immature, cause such test block is carried out numerical analysis when by
Ice content in can not accurately learning concrete freeze thawing test block and occur that the error of data result is relatively big, or the process of analysis
The increase of workload.
Summary of the invention
Technical problem to be solved in the utility model is for above-mentioned the deficiencies in the prior art, and a kind of electric capacity provided
Method concrete freezing-thawing test test block ice content measuring instrument, it can solve the instrument of existing detection concrete freezing-thawing test test block ice content
The problem that concrete body can be damaged by device.
The purpose of utility model is achieved in that
A kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument, it includes test block mounting table, is arranged on test block
Two pieces of parallel metal sheets being parallel to each other on mounting table, it is arranged on the instrument base below test block mounting table, in test block mounting table
Being provided with thermocouple sensor, metallic plate is provided with capacitance measurement amplifying circuit, capacitance measurement amplifying circuit and thermocouple sensing
Device is connected with measurement apparatus by data wire, is provided with control chip in measurement apparatus, and control chip input port is put with capacitance measurement
Big circuit and thermocouple sensor connect, and the delivery outlet of control chip is connected with display.
Above-mentioned measurement apparatus is also connected with PC.
Being provided with radome on test block mounting table, the metallic plate that two pieces are parallel to each other can be covered by radome.
Above-mentioned data wire is coated with screen layer.
Above-mentioned measurement apparatus is connected by RS232 Serial Port Line with PC.
Above-mentioned capacitance measurement amplifying circuit is connected with control chip by A/D converter.
In described capacitance measurement amplifying circuit, measured capacitance Cx connects two-by-two with electric capacity Cas, Cbs, switchs S1 cut-in operation
Voltage (Vin), switchs S2 ground connection；Electric capacity Cas and the common end grounding of electric capacity Cbs；Electric capacity Cr and switch S3 parallel connection after one end with
Measured capacitance Cx connects, and the other end connects with the outfan of amplifier U1, simultaneously the negative pole of electric capacity Cx also the most defeated with amplifier U1
Enter end to connect, the positive input ground connection of amplifier U1；Switch S4 and switch S5 be connected with buffer U2 and U3 respectively, S4 with
The common port of U2, the common port of S5 and U3 are respectively connected to ground capacity；The positive pole of S4 and S5 all connects with the outfan of amplifier U；
The outfan of buffer U2 connects with the reverse input end (Vout1) of amplifier U4, and the outfan of buffer U3 is with amplifier U4 just
Connect to input (Vout2)；The outfan output voltage (Vout) of amplifier U4.
This utility model can bring techniques below effect:
Use said structure, it is possible to measure the ice content of concrete freezing-thawing test test block fast and accurately, and this side
Method is nondestructive, tested test block will not be had any damage, can continue this test block carries out other tests, solve mesh
This type of experiment ice content is asked for the complicated inaccurate problem of process by front each laboratory, makes the entirety containing freezing-thawing test part real
Test result more accurate.
Accompanying drawing explanation
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings:
Fig. 1 is structural representation of the present utility model；
Fig. 2 is structured flowchart of the present utility model；
Fig. 3 is the circuit diagram of capacitance measurement amplifying circuit in this utility model.
Detailed description of the invention
Capacitance method concrete freezing-thawing test test block ice content measuring instrument as depicted in figs. 1 and 2, it include test block mounting table 2,
Be arranged on test block mounting table 2 be parallel to each other two pieces of parallel metal sheets 1, be arranged on the instrument base below test block mounting table 2
4, it is provided with thermocouple sensor 8 in test block mounting table 2, metallic plate 1 is provided with capacitance measurement amplifying circuit 9, and capacitance measurement is amplified
Circuit 9 and thermocouple sensor 8 are connected with measurement apparatus 6 by data wire 5, are provided with control chip 7 in measurement apparatus 6, control
Coremaking sheet 7 input port is connected with capacitance measurement amplifying circuit 9 and thermocouple sensor 8, the delivery outlet of control chip 7 and display
Device 10 connects.
Described measurement apparatus 6 is also connected with PC 11.
Being provided with radome 3 on test block mounting table 2, the metallic plate 1 that two pieces are parallel to each other can be covered by radome 3.
Described data wire 5 is coated with screen layer.
Described measurement apparatus 6 is connected by RS232 Serial Port Line with PC 11.
Described capacitance measurement amplifying circuit 9 is connected with control chip 7 by A/D converter 12.
As it is shown on figure 3, measured capacitance Cx connects two-by-two with electric capacity Cas, Cbs in capacitance measurement amplifying circuit 9, switch S1 connects
Enter running voltage (Vin), switch S2 ground connection；Electric capacity Cas and the common end grounding of electric capacity Cbs；After electric capacity Cr and switch S3 parallel connection
One end connects with measured capacitance Cx, and the other end connects with the outfan of amplifier U1, simultaneously the negative pole of electric capacity Cx also with amplifier U1
Reverse input end connects, the positive input ground connection of amplifier U1；Switch S4 is connected with buffer U2 and U3 respectively with switch S5,
It is respectively connected to ground capacity at the common port of S4 and U2, the common port of S5 and U3；The positive pole of S4 and S5 all with the outfan of amplifier U
Connect；The outfan of buffer U2 connects with the reverse input end (Vout1) of amplifier U4, the outfan of buffer U3 and amplifier U4
Positive input (Vout2) connect；The outfan output voltage (Vout) of amplifier U4.
Using said structure, during use, the first step is to be placed on before freeze thawing by concrete test block on test block mounting table 2,
Then cover concrete test block and mounting table 2 with radome 3, switch on power, make device properly functioning.Second step, disconnects electricity
Source, takes off radome 3, carries out freezing-thawing test after being taken out by concrete test block.3rd step, tries the concrete passing through freeze thawing
Block is placed on test block mounting table 2 again, covers the concrete test block after freeze thawing and mounting table 2 with radome 3, connects electricity
Source, makes device properly functioning, the most i.e. can read the ice content after this concrete test block freezing-thawing test.
Claims (7)
1. a capacitance method concrete freezing-thawing test test block ice content measuring instrument, it is characterised in that: it includes test block mounting table
(2), be arranged on test block mounting table (2) be parallel to each other two pieces of parallel metal sheets (1), be arranged on test block mounting table (2) lower section
Instrument base (4), be provided with thermocouple sensor (8) in test block mounting table (2), metallic plate (1) be provided with capacitance measurement amplify
Circuit (9), capacitance measurement amplifying circuit (9) and thermocouple sensor (8) are connected with measurement apparatus (6) by data wire (5),
Control chip (7), control chip (7) input port and capacitance measurement amplifying circuit (9) and thermocouple it is provided with in measurement apparatus (6)
Sensor (8) connects, and the delivery outlet of control chip (7) is connected with display (10).
A kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument the most according to claim 1, it is characterised in that:
Described measurement apparatus (6) is also connected with PC (11).
A kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument the most according to claim 1, it is characterised in that:
Being provided with radome (3) on test block mounting table (2), the metallic plate (1) that two pieces are parallel to each other can be covered by radome (3).
A kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument the most according to claim 1, it is characterised in that:
Described data wire (5) is coated with screen layer.
A kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument the most according to claim 2, it is characterised in that:
Described measurement apparatus (6) is connected by RS232 Serial Port Line with PC (11).
A kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument the most according to claim 1, it is characterised in that:
Described capacitance measurement amplifying circuit (9) is connected with control chip (7) by A/D converter (12).
7., according to a kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument described in claim 1 or 6, its feature exists
In: in described capacitance measurement amplifying circuit (9), measured capacitance Cx connects two-by-two with electric capacity Cas, Cbs, switch S1 cut-in operation electricity
Pressure (Vin), switchs S2 ground connection；Electric capacity Cas and the common end grounding of electric capacity Cbs；One end and quilt after electric capacity Cr and switch S3 parallel connection
Surveying electric capacity Cx to connect, the other end connects with the outfan of amplifier U1, and the negative pole of electric capacity Cx also inputs with the reverse of amplifier U1 simultaneously
End connects, the positive input ground connection of amplifier U1；Switch S4 is connected with buffer U2 and U3, at S4 and U2 respectively with switch S5
Common port, the common port of S5 and U3 be respectively connected to ground capacity；The positive pole of S4 and S5 all connects with the outfan of amplifier U；Slow
The reverse input end (Vout1) of the outfan and amplifier U4 that rush device U2 connects, the outfan of buffer U3 and the forward of amplifier U4
Input (Vout2) connects；The outfan output voltage (Vout) of amplifier U4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620680408.2U CN205749357U (en) | 2016-06-30 | 2016-06-30 | A kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620680408.2U CN205749357U (en) | 2016-06-30 | 2016-06-30 | A kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205749357U true CN205749357U (en) | 2016-11-30 |
Family
ID=57381156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620680408.2U Expired - Fee Related CN205749357U (en) | 2016-06-30 | 2016-06-30 | A kind of capacitance method concrete freezing-thawing test test block ice content measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205749357U (en) |
-
2016
- 2016-06-30 CN CN201620680408.2U patent/CN205749357U/en not_active Expired - Fee Related
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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: 20161130 Termination date: 20170630 |