CN202361947U - High intelligent surface strain sensor - Google Patents
High intelligent surface strain sensor Download PDFInfo
- Publication number
- CN202361947U CN202361947U CN2011205198025U CN201120519802U CN202361947U CN 202361947 U CN202361947 U CN 202361947U CN 2011205198025 U CN2011205198025 U CN 2011205198025U CN 201120519802 U CN201120519802 U CN 201120519802U CN 202361947 U CN202361947 U CN 202361947U
- Authority
- CN
- China
- Prior art keywords
- sensor
- sensor unit
- stainless
- surface strain
- steel wire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a high intelligent surface strain sensor which comprises a sensor unit, wherein the sensor unit is sealed in a stainless steel pipe which is provided with a cable pipe used for leading out data lines of the sensor unit; and the two ends of the stainless steel pipe are respectively provided with a mounting seat. The sensor unit of the utility model is sealed in the stainless steel pipe; the high-intelligent surface strain sensor can be used for solving the difficulties of field installation, and is not easy to damage, so that the condition that invalid data of the corresponding physical quantity can not be calculated due to loss of sensor number and calibration parameters in a long-term quality monitoring period of an engineering structure even if frequency value of the sensor is measured can not occur; and in addition, numerical values can be directly conversed and processed; and the measured physical quantity can be directly input by the sensor, so that a complex procedure of manual calculating and possibly generated error are exempted.
Description
Technical field
The utility model relates to sensor, is specially a kind of high intelligent surface strain transducer.
Background technology
The surface strain sensor is widely used in physical quantitys such as the strain, stress, pressure, displacement of inspected object; Because its material guarantees and direct output frequency signal; Therefore there is not zero point drift; Long-time stability are good, thereby are used widely in fields such as water conservancy and hydropower, railway, traffic, buildings; It is made according to tension force string principle; Generally by the fixing stretch-draw then in metallic cord two ends; Metallic cord inside will produce certain force of strain, and this moment, natural vibration frequency and its inner tensions of metallic cord just had certain quantitative relationship, and the tension force of the string wire relation that be deformed into direct ratio suffered with it and a kind of sensor of making; The surface strain sensor of traditional structure has following defective: what sensor was exported is the practical frequency value; Also must convert according to calibration curve and just can draw the measurand of object, test speed is slow, and is high to tester's technical merit requirement; In engineering structure, do during the long-term quality monitoring, be prone to cause losing of sensor number and calibrating parameters, so that measure the invalid data situation that the sensor frequency value also can't be calculated corresponding physical quantity.
Summary of the invention
The technical matters that the utility model solved is to provide a kind of high intelligent surface strain transducer, thereby solves the problem in the above-mentioned background technology.
The technical matters that the utility model solved adopts following technical scheme to realize:
A kind of high intelligent surface strain transducer; Comprise sensor unit, it is characterized in that said sensor unit is sealed in the stainless-steel tube; This stainless-steel tube is provided with the cable tube that is used to draw said sensor unit data line, and the two ends of said stainless-steel tube are provided with mount pad.
As a kind of improvement; Said sensor unit comprises the steel wire string; The two ends of this steel wire string are fixed in the stainless-steel tube; The centre position of steel wire string is provided with a drive coil, a permanent magnet, and drive coil, permanent magnet place a side of steel wire string, and permanent magnet places between drive coil and the steel wire string; Two termination amplifier input terminal of drive coil, the data line that the output terminal of amplifier is drawn passes said cable tube.
As a kind of improvement, also be sealed with storer in the said stainless-steel tube, the data line that the output terminal of this storer connects passes said cable tube.
As a kind of improvement, also be sealed with a semiconductor temperature sensor in the said stainless-steel tube with global unique number, the unibus of this semiconductor temperature sensor passes said cable tube.
According to the design of routine, the data line in the said cable tube all is connected on the microprocessor, and this microprocessor can effectively be handled data, and does not need the manual conversion.
The principle of work of the utility model: with a pulse voltage signal de-energisation coil, the magnetic field that will change in the coil, the steel wire string produces damped vibration under the effect in magnetic field; The frequency of vibration is the natural frequency of steel wire string; Through the pumping signal that vibration produced of drive coil reception string, the signal that coil receives outputs to amplifier input terminal through a cable that closely links to each other with sensor, outputs to microprocessor through amplifying; The output of simultaneous temperature sensor also is sent to microprocessor; Microprocessor carries out data processing according to the electrical signal of the frequency and the temperature signal of input, directly exports measurand.Storer is connected with microprocessor, accepts the numerical signal/instruction from microprocessor, stores or access data-signal.
Owing to adopted above structure, the utlity model has following beneficial effect:
Sensor unit is sealed in the stainless-steel tube; Solved a field erected difficult problem; And it is not fragile; Even in engineering structure, do during the long-term quality monitoring, losing so that measure the invalid data situation that the sensor frequency value also can't be calculated corresponding physical quantity of sensor number and calibrating parameters can not taken place yet; Through microprocessor, directly numerical value converts, handles in addition, and sensor can directly be exported measurand, has removed the miscellaneous program and the issuable mistake of manual calculation from; Storer and sensor unit are sealed; Like this number of sensor, calibrating parameters, information such as test data permanently is stored in the storage chip of sensor; Therefore; Even the transmission cable breakdown of sensor just can access historical test data and recover new test as long as reclose from sensor.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural principle block diagram of the utility model;
Fig. 3 is the circuit interconnect pattern of the utility model;
Fig. 4 is the cut-open view of the utility model encapsulating structure;
Among the figure: 1. stainless-steel tube, 2. cable tube, 3. mount pad, 4. steel wire string; 5. drive coil, 6. permanent magnet, 7. amplifier, 8. storer; 9. semiconductor temperature sensor, 10. microprocessor, 11. singlechip chips, 12. RS485/422 interface chips.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1; A kind of high intelligent surface strain transducer; Comprise sensor unit, it is characterized in that said sensor unit is sealed in the stainless-steel tube 1; This stainless-steel tube 1 is provided with the cable tube 2 that is used to draw said sensor unit data line, and the two ends of said stainless-steel tube 1 are provided with mount pad 3.
Referring to Fig. 2; Said sensor unit comprises steel wire string 4; The two ends of this steel wire string 4 are fixed in the stainless-steel tube 1; The centre position of steel wire string 4 is provided with a drive coil 5, a permanent magnet 6, and drive coil 5, permanent magnet 6 place a side of steel wire string 4, and permanent magnet 6 places between drive coil 5 and the steel wire string 4; The input end of two termination amplifiers 7 of drive coil 5, the data line that the output terminal of amplifier 7 is drawn passes said cable tube; Also be sealed with storer 8 in the said stainless-steel tube 1, the data line that the output terminal of this storer 8 connects passes said cable tube 2; Also be sealed with a semiconductor temperature sensor 9 in the said stainless-steel tube 1 with global unique number; The data line of this semiconductor temperature sensor 9 passes said cable tube 2; In the present embodiment, the data line in the said cable tube 2 all is connected on the microprocessor 10.Wherein, Drive coil 5 receives the driving pulse of input, and output magnetic exciting force, steel wire string 4 are excited by the magnetic exciting force and produce vibration; Steel wire string 4 single vibrations cutting permanent magnet 6 magnetic lines of force generate the a-c cycle signal and export to microprocessor 10 in the drive coil 5; Semiconductor temperature sensor 9 is measured the tested point temperature value and is exported to microprocessor 10; Microprocessor 10 reads calibrating parameters and temperature compensation coefficient from the storer 8 that connects, convert frequency signal to the physical quantity data after treatment, and loopback also is saved in storer 8, through external data line the physical quantity data is exported simultaneously.
As shown in Figure 3; The circuit of the utility model is: drive coil 5 is converted into the magnetic exciting force to excite steel wire string 4 generation single vibrations with the test pulse of input; Then steel wire string 4 is exported to microprocessor 10 owing to receiving unidirectional exciting to cut the a-c cycle signal that permanent magnet 6 magnetic lines of force inductions produces; Described microprocessor 10 comprises singlechip chip 11 and RS485/422 interface chip 12; Wherein: amplifier 7 is connected with the output terminal of drive coil 5 with input end (,+), and the a-c cycle signal from drive coil 5 is carried out amplification filtering, the frequency signal that output is amplified; Have at the scene that the singlechip chip 11 of program capability (IAP) is connected with the output terminal of I/0 interface with amplifier 7, the frequency signal that amplifies is carried out the logical and numerical operation, the physical quantity of output measured signal; Semiconductor temperature sensor 9 and singlechip chip 11 are connected through unibus, according to the temperature value from the numerical signal/instruction read semiconductor temperature sensor 9 of singlechip chip 11; (SDA's storer 8 SCL) is connected, and the numerical signal/instruction according to from singlechip chip 11 stores or access numerical signal with the access hole of IC access port and singlechip chip 11; Serial line interface (the RXD of RS485/422 type serial interface chip 12 and singlechip chip 11; The TXD pin) is connected,, implements the conversion between numerical signal and serial signal according to numerical signal, instruction from singlechip chip 11; And through its transmitting-receiving mouthful T+; T-, A, B with send serial signal outside or accept external serial command.Described sensor unit is also drawn four power lead Vl, GND, and V2, V3 power supply road each several part uses.
Fig. 4 is the cut-open view of encapsulating structure in the utility model; Stainless-steel tube 1 laterally is provided with steel wire string 4 among the figure; Middle part in the stainless-steel tube 1 is provided with permanent magnet 6 near steel wire string 4, and the outside of permanent magnet is provided with drive coil 5, and its next door also is provided with storer 8 and semiconductor temperature sensor 9.
More than show and described ultimate principle of the utility model and the advantage of principal character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; Under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications, and these variations and improvement all fall in the utility model scope that requires protection.The utility model protection defined by the appended claims and their equivalents defined
.
Claims (4)
1. one kind high intelligent surface strain transducer; Comprise sensor unit; It is characterized in that: said sensor unit is sealed in the stainless-steel tube, and this stainless-steel tube is provided with the cable tube that is used to draw said sensor unit data line, and the two ends of said stainless-steel tube are provided with mount pad.
2. a kind of high intelligent surface strain transducer according to claim 1; It is characterized in that: said sensor unit comprises the steel wire string; The two ends of this steel wire string are fixed in the stainless-steel tube; The centre position of steel wire string is provided with a drive coil, a permanent magnet, and drive coil, permanent magnet place a side of steel wire string, and permanent magnet places between drive coil and the steel wire string; Two termination amplifier input terminal of drive coil, the data line that the output terminal of amplifier is drawn passes said cable tube.
3. a kind of high intelligent surface strain transducer according to claim 1 and 2 is characterized in that: also be sealed with storer in the said stainless-steel tube, the data line that the output terminal of this storer connects passes said cable tube.
4. a kind of high intelligent surface strain transducer according to claim 3; It is characterized in that: also be sealed with a semiconductor temperature sensor with global unique number in the said stainless-steel tube, the unibus of this semiconductor temperature sensor passes said cable tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205198025U CN202361947U (en) | 2011-12-12 | 2011-12-12 | High intelligent surface strain sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205198025U CN202361947U (en) | 2011-12-12 | 2011-12-12 | High intelligent surface strain sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202361947U true CN202361947U (en) | 2012-08-01 |
Family
ID=46573128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205198025U Expired - Fee Related CN202361947U (en) | 2011-12-12 | 2011-12-12 | High intelligent surface strain sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202361947U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019789A (en) * | 2013-12-21 | 2014-09-03 | 广西科技大学 | Component detection method |
-
2011
- 2011-12-12 CN CN2011205198025U patent/CN202361947U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019789A (en) * | 2013-12-21 | 2014-09-03 | 广西科技大学 | Component detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106679703B (en) | Data reading device of vibrating wire type sensor and working method thereof | |
| CN101408553B (en) | Rotary peed-measuring and frequency outputting device | |
| CN206095270U (en) | A wireless vibrating wire sensing signal conditioning ware for civil structure health monitoring | |
| CN106981188A (en) | A kind of wireless sensing network system and its operation method based on vibrating string type sensor | |
| CN204330189U (en) | A kind of for welding job stress dynamic checkout unit | |
| CN101629861B (en) | Torque rotary speed sensor | |
| CN202361947U (en) | High intelligent surface strain sensor | |
| CN2874429Y (en) | Intelligent string type sensor | |
| CN2872307Y (en) | Intelligent string sensor | |
| CN1743811A (en) | Vibration wire type digital memory sensor | |
| CN202403708U (en) | Processing interface device for intelligence sensor | |
| CN202535313U (en) | Input end circuit of on-line monitoring system of SF6 trace moisture density | |
| CN1346973A (en) | String vibration type sensor with digital memory | |
| CN203965608U (en) | A kind of digital magnetic flux cable tension sensor | |
| CN202939786U (en) | Wireless data acquisition device for mechanical property detection of concrete pole | |
| CN201107058Y (en) | Intelligent electromagnetic flowmeter for measuring multiple parameters | |
| CN201434686Y (en) | One-to-two connection type vibrating wire transducer | |
| CN2510842Y (en) | Vibrating-string type digital memory sensor | |
| CN202048936U (en) | Micro differential pressure measuring instrument | |
| CN203572616U (en) | Enhanced strain type force transducer data acquisition system | |
| CN204346538U (en) | A kind of reservoir level remote supervision system | |
| CN113375898A (en) | Fiber grating test method for flow-induced vibration of tube bundle structure | |
| CN208520502U (en) | A kind of digital force-measuring sensor amplifier | |
| CN207232058U (en) | A kind of soil pH value sensor with metal electrode | |
| CN100480671C (en) | Time-varying program controlled pile foundation quality tester |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGZHOU JIHUA SURVEY CO., LTD. Free format text: FORMER NAME: GUANGZHOU GEOHWA GEOTECHNICAL TESTING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 510260 Guangdong city of Guangzhou province Haizhuqu District River Road No. 51, No. 51, three 7, 8 second layer self Patentee after: Guangzhou Jihua Survey Co., Ltd. Address before: Guangzhou City, Haizhuqu District province Guangzhou city Guangdong River Road 510260 No. 51 Patentee before: Guangzhou Geohwa Geotechnical Testing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20191212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |