CN201242481Y - Electromagnetic induction type apparatus for detecting cord force - Google Patents
Electromagnetic induction type apparatus for detecting cord force Download PDFInfo
- Publication number
- CN201242481Y CN201242481Y CNU2008200907004U CN200820090700U CN201242481Y CN 201242481 Y CN201242481 Y CN 201242481Y CN U2008200907004 U CNU2008200907004 U CN U2008200907004U CN 200820090700 U CN200820090700 U CN 200820090700U CN 201242481 Y CN201242481 Y CN 201242481Y
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- electromagnetic induction
- electromagnetic
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- analog switch
- integration
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Abstract
The utility model discloses an electromagnetic induction type cable force detection device, which comprises a discharge capacitor, an electromagnetic exciting coil, an electromagnetic induction coil, a dual-path analog comparison circuit, a regulating resistor, an analog switch and an integral interception circuit. The discharge capacitor generates electric pulse signals and is connected with the electromagnetic exciting coil and the dual-path analog comparison circuit, the regulating resistor is connected with the electromagnetic exciting coil to adjust the measurement sensitivity, the electromagnetic induction coil is coupled with the electromagnetic exciting coil through a steel rope in an electromagnetic way, the analog switch is connected with the dual-path analog comparison circuit to control the integral working point, and the integral interception circuit is connected with the analog switch to integrate electromagnetic induction signals. As the new method of detecting the cable force through the electromagnetic induction is adopted, the electromagnetic induction type cable force detection device can directly measure the cable force, the dynamic response is rapid, the service life is long, the cost is low, and the measurement results are not affected by environmental factors, such as wind, vibration and the anti-corrosion layer of the steel cable surface and the like.
Description
Technical field
The utility model relates to a kind of device for measuring force, especially relates to a kind of device that detects the bridge steel cable force.
Background technology
At present, Suo Li measures 3 kinds of methods commonly used, tensimeter mensuration, determination of pressure sensor and frequency measurement method both at home and abroad.The Suo Li that preceding two kinds of methods just generally are only applicable at the suspension cable of stretch-draw measures, and is difficult to the Suo Li of the suspension cable of stretch-draw is carried out repetition measurement, therefore, when the suspension cable that need finish to constructing carries out the on-line monitoring of Suo Li, nearly all uses frequency method.Current, the cable frequency method that construction is finished almost is an only current option.But the such environmental effects such as anticorrosive coat on this method wind-engaging, vibration and cable surface are bigger, use limited.
Summary of the invention
The purpose of this utility model is to overcome the weak point that exists in the above-mentioned technology, and the device of a kind of compact conformation, measurement rope pull reasonable in design, with low cost is provided, and can effectively overcome the induction cable force detecting device of prior art defective.
In order to achieve the above object, the technical solution adopted in the utility model is: comprise discharge capacity, the electric magnetization coil, electromagnetic induction coil, the two-way analog comparator, regulate resistance, analog switch and integration intercepting circuit, discharge capacity produces electric impulse signal, it links to each other with the two-way analog comparator with the electric magnetization coil, regulating resistance links to each other with the electric magnetization coil, measure sensitivity adjustment, electromagnetic induction coil carries out electromagnetic coupled by cable wire and electric magnetization coil, analog switch links to each other with the two-way analog comparator, in order to control integration working point, integration intercepting circuit links to each other with analog switch, in order to electromagnetic induction signal is carried out integration.
The utility model has the advantages that:
Because the utility model adopts the new method of a kind of induction test Suo Li to design pick-up unit, this device is the direct measurement to Suo Li, fast, the long service life, cheap of its dynamic response, and the measurement result Effect of Environmental such as anticorrosive coat on wind-engaging, vibration and cable surface not.Compare with the legacy frequencies method, this kind method of testing is easier, directly perceived.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the utility model circuit theory diagrams;
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
By Fig. 1-Fig. 2 as can be known, the utility model is a kind of induction cable force detecting device, comprise discharge capacity 1, electric magnetization coil 2, electromagnetic induction coil 3, two-way analog comparator 4, regulate resistance 5, analog switch 6 and integration intercepting circuit 7, discharge capacity 1 produces electric impulse signal, it links to each other with two-way analog comparator 4 with electric magnetization coil 2, regulating resistance 5 links to each other with electric magnetization coil 2, measure sensitivity adjustment, electromagnetic induction coil 3 carries out electromagnetic coupled by cable wire 8 and electric magnetization coil 2, analog switch 6 links to each other with two-way analog comparator 4, in order to control integration working point, integration intercepting circuit 7 links to each other with analog switch 6, in order to electromagnetic induction signal is carried out integration.
Regulating resistance 5 is two rheostat R1, R2 in parallel, two-way analog comparator 4 is realized by IC1, discharge capacity C1, rheostat R1, R2 insert four input ends of IC1 respectively, analog switch 6 is realized by IC2, measuring coil 3 is realized by inductance L 1, two output terminals of IC2 and the output terminal of L1 insert three input ends of IC2 respectively, and its output terminal connects the integration intercepting circuit of being made up of amplifier IC3, resistance R 3, R4 and capacitor C 27.
Its principle of work of brief description.
The pulse voltage of discharge capacity 1 output inserts the input end of drive coil 2 and two-way analog comparator 4, can regulate the sensitivity of measurement by the effect of regulating resistance 5.By adjusting rheostat R1 in advance and the R2 resistance is set comparative voltage, make 4 road comparison signal 4a, 4b, 4c, 4d suitable configurations, wherein, 4a, 4c are input, 4e is its output; 4b, 4d are input, and 4f is its output.4e and 4f meet 6b, the 6c of analog switch 6 respectively.The output voltage of measuring coil 3 inserts the 6a pin of analog switch 6, by the reasonable disposition of 6a, 6b, 6c, and the effect of integration intercepting circuit 7, one section operation interval that can intercept on the curve of output carries out integration.And the power of cable wire 8 and output voltage signal be integrated into direct ratio, this just can finish the cable wire force measurement.Whole measurement device principle is simple and reliable, working stability.
Claims (2)
1. induction cable force detecting device, comprise discharge capacity (1), electric magnetization coil (2), electromagnetic induction coil (3), two-way analog comparator (4), regulate resistance (5), analog switch (6) and integration intercepting circuit (7), it is characterized in that: discharge capacity (1) produces electric impulse signal, it links to each other with two-way analog comparator (4) with electric magnetization coil (2), regulating resistance (5) links to each other with electric magnetization coil (2), measure sensitivity adjustment, electromagnetic induction coil (3) carries out electromagnetic coupled by cable wire (8) and electric magnetization coil (2), analog switch (6) links to each other with two-way analog comparator (4), in order to control integration working point, integration intercepting circuit (7) links to each other with analog switch (6), in order to electromagnetic induction signal is carried out integration.
2. induction cable force detecting device according to claim 1, it is characterized in that: regulate resistance (5) and be two rheostat R1, R2 in parallel, two-way analog comparator (4) is realized by IC1, discharge capacity C1, rheostat R1, R2 insert four input ends of IC1 respectively, analog switch (6) is realized by IC2, electromagnetic induction coil (3) is realized by inductance L 1, two output terminals of IC2 and the output terminal of L1 insert three input ends of IC2 respectively, and its output terminal connects the integration intercepting circuit of being made up of amplifier IC3, resistance R 3, R4 and capacitor C 2 (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200907004U CN201242481Y (en) | 2008-08-21 | 2008-08-21 | Electromagnetic induction type apparatus for detecting cord force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200907004U CN201242481Y (en) | 2008-08-21 | 2008-08-21 | Electromagnetic induction type apparatus for detecting cord force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201242481Y true CN201242481Y (en) | 2009-05-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200907004U Expired - Fee Related CN201242481Y (en) | 2008-08-21 | 2008-08-21 | Electromagnetic induction type apparatus for detecting cord force |
Country Status (1)
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| CN (1) | CN201242481Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252795A (en) * | 2011-05-05 | 2011-11-23 | 中国科学院国家天文台 | Capacitive cable tension sensor |
| CN102628720A (en) * | 2012-04-13 | 2012-08-08 | 浙江省交通规划设计研究院 | Non-contact type inhaul cable force measuring device based on electromagnetic induction |
| CN102680156A (en) * | 2012-05-04 | 2012-09-19 | 东南大学 | Coupled external mounted steel stay rope force detection device and method |
| WO2013078981A1 (en) | 2011-11-30 | 2013-06-06 | 浙江大学 | Stress monitoring device of magneto-elastic and magneto-electric effect type |
| CN104568277A (en) * | 2015-01-27 | 2015-04-29 | 东南大学 | Cable force detection instrument and method suitable for active service cable |
| CN105158300A (en) * | 2015-09-17 | 2015-12-16 | 中铁大桥科学研究院有限公司 | Detection method for bridge linear steel member |
| CN109540351A (en) * | 2018-12-03 | 2019-03-29 | 沈阳工业大学 | A kind of Magnetic Memory experimental provision for creating dynamic magnetic field environment |
-
2008
- 2008-08-21 CN CNU2008200907004U patent/CN201242481Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252795A (en) * | 2011-05-05 | 2011-11-23 | 中国科学院国家天文台 | Capacitive cable tension sensor |
| CN102252795B (en) * | 2011-05-05 | 2012-10-03 | 中国科学院国家天文台 | Capacitive cable tension sensor |
| WO2013078981A1 (en) | 2011-11-30 | 2013-06-06 | 浙江大学 | Stress monitoring device of magneto-elastic and magneto-electric effect type |
| CN102628720A (en) * | 2012-04-13 | 2012-08-08 | 浙江省交通规划设计研究院 | Non-contact type inhaul cable force measuring device based on electromagnetic induction |
| CN102680156A (en) * | 2012-05-04 | 2012-09-19 | 东南大学 | Coupled external mounted steel stay rope force detection device and method |
| CN102680156B (en) * | 2012-05-04 | 2013-11-06 | 东南大学 | Coupled external mounted steel stay rope force detection device and method |
| CN104568277A (en) * | 2015-01-27 | 2015-04-29 | 东南大学 | Cable force detection instrument and method suitable for active service cable |
| CN104568277B (en) * | 2015-01-27 | 2017-01-25 | 东南大学 | Cable force detection instrument and method suitable for active service cable |
| CN105158300A (en) * | 2015-09-17 | 2015-12-16 | 中铁大桥科学研究院有限公司 | Detection method for bridge linear steel member |
| CN109540351A (en) * | 2018-12-03 | 2019-03-29 | 沈阳工业大学 | A kind of Magnetic Memory experimental provision for creating dynamic magnetic field environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20090921 |