CN1743811A - Vibration wire type digital memory sensor - Google Patents
Vibration wire type digital memory sensor Download PDFInfo
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- CN1743811A CN1743811A CN 200510032178 CN200510032178A CN1743811A CN 1743811 A CN1743811 A CN 1743811A CN 200510032178 CN200510032178 CN 200510032178 CN 200510032178 A CN200510032178 A CN 200510032178A CN 1743811 A CN1743811 A CN 1743811A
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- string
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- digital memory
- vibration type
- type sensor
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Abstract
This invention discloses a string vibration type memory sensor, which contains left end base, right end base, sealed casing with enclosed tensioned steel string using left and right end base as support point, permanent magnet and induction windings, a memory, said memory and induction windings respectively connected with secondary instrument in outside of sensor. Said invention not only directly detects the needed physical quantity but also transmits long distance with advantages of simple structure, small volume, light and high measurement precision.
Description
Technical field
The present invention is mainly concerned with sensor field, refers in particular to a kind of string vibration type sensor with digital memory.
Background technology
Vibrating string type sensor of the prior art, be that the natural frequency of vibration according to the fixing string wire in two ends is directly proportional with tension force, and the tension force of the string wire relation that be deformed into direct ratio suffered and a kind of sensor made from it, it is widely used in the physical quantity such as 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; But used vibrating string type sensor has following shortcoming: 1. sensor output is the practical frequency value, and also must convert according to calibration curve just to draw the measurand of object, and test speed is slow, and is high to tester's technical merit requirement; 2. when being embedded in a large number, sensor does in the engineering structure during the long-term quality monitoring, stained or the interruption of sensor transmissions cable easily takes place, cause sensor number and calibrating parameters to lose, so that generation obtains the invalid data situation that frequency values also can't be calculated the respective physical amount.At the problems referred to above, there is the improver that the treatment circuit of complexity and the miscellaneous part of storer and sensor are integrated in one in the prior art, such sensor have complex structure, volume greatly, heavier shortcoming, be unfavorable for tester's installation and removal, when particularly on large-scale determinand, a plurality of sensor being installed, can bring great gravity effect to determinand, thereby have influence on the precision of test.
Summary of the invention
The technical problem to be solved in the present invention just is: at the technical matters of prior art existence, the invention provides and a kind ofly can under transmission cable breakdown situation, directly record required physical quantity, can make long-distance transmissions again, and simple in structure, volume is little, lightweight string vibration type sensor with digital memory.
In order to solve the problems of the technologies described above, the solution that the present invention proposes is: a kind of string vibration type sensor with digital memory, it comprises the left end seat, right end base and one is located at the sealed enclosure between left end seat and the right end base, being packaged with one in this casing is tensioning string wire and the permanent magnet and the inductive coil of fulcrum with left end seat and right end base, this permanent magnet vertically is packaged in the relative both sides of string wire with string wire respectively with inductive coil, it is characterized in that: described sensor also includes storer, and described storer links to each other with sensor secondary instrument outward respectively with inductive coil.
Described storer and permanent magnet, inductive coil and string wire together are packaged in the sealed enclosure.
Described memory chip adopts electricity can write ROM (read-only memory).
Also lead to first signal wire and secondary signal line and first power lead and second source line on the described casing.
Described storer is with I
2The form of C bus links to each other with the access hole of secondary instrument.
Compared with prior art, the invention has the advantages that:
1, the built-in serial storage chip of string vibration type sensor with digital memory of the present invention has been preserved number of sensor and relevant calibrating parameters, can directly show after secondary instrument is read to calculate measurand by sensor number, has removed the trouble of artificial calculating from;
2, string vibration type sensor with digital memory number of sensor of the present invention, calibrating parameters etc. permanently are stored in the memory chip of sensor, and can when each the measurement, preserve automatically and survey parameter for 800 times as: Measuring Time, measuring point temperature, zero point parameter, temperature modified value etc., therefore, even the transmission cable breakdown of sensor is as long as reclose and can access original and historical test data and recover new test from sensor;
3, string vibration type sensor with digital memory of the present invention is compared with string vibration type sensor with digital memory of the prior art, structure is simple more, volume is littler, weight is lighter, and the cost of single sensor is cheaper, thereby can be applicable to more test environment, its gravity effect to determinand is littler, measuring accuracy is higher, so the present invention has significant advance in this area.
Description of drawings
Fig. 1 is the structural principle block diagram of the embodiment of the invention;
Fig. 2 is the structural representation of the embodiment of the invention.
Marginal data
11, left end seat 12, right end base
2, string wire 3, permanent magnet
4, inductive coil 5, storer
6, string pipe 7, casing
8, secondary instrument
Embodiment
Below with reference to accompanying drawing the present invention is described in further details.
As depicted in figs. 1 and 2, string vibration type sensor with digital memory of the present invention, it comprises that left end seat 11, right end base 12 and be located at the sealed enclosure 7 between left end seat 11 and the right end base 12, being packaged with one in this casing 7 is tensioning string wire 2 and permanent magnet 3, inductive coil 4 and the storer 5 of fulcrum with left end seat 11 and right end base 12, this tensioning string wire 2 is sheathed in the string pipe 6 and by string pipe 6 and links to each other with right end base 12 with left end seat 11, and permanent magnet 3 and inductive coil 4 vertically are packaged in the relative both sides of string wire 2 with string wire 2 respectively.Wherein, inductive coil 4 links to each other with sensor secondary instrument 8 outward, it is responsible for receiving the test pulse of input, output magnetic exciting force, and being subjected to the magnetic exciting force, string wire 2 excites the generation single vibration, string wire 2 single vibrations cuttings permanent magnet 3 magnetic lines of force, generate again in the inductive coil 4 the a-c cycle signal export to be attached thereto be arranged at the outer secondary instrument 8 of sensor, be provided with the treatment circuit that comprises amplifier and single-chip microcomputer in this secondary instrument 8; This storer 5 adopts 24C64 serial storage chip, and the one end is with I
2The form of C bus is connected with the access hole of secondary instrument 8, accepts the numerical signal/instruction from secondary instrument 8, stores or access numerical signal.Simultaneously, in preferred embodiment, string vibration type sensor with digital memory of the present invention also leads to the first signal wire S1 and secondary signal line S2 and the first power lead P1 and second source line P2; Wherein P1 is connected with ground wire GND, and P2 is connected with the power lead Vcc of each element circuit.
Principle of work: in the test process, at first left end seat 11 and right end base 12 are tied up respectively or are adhesively fixed on 2 that fix on object under test along deformation direction, the distortion of object under test is passed to the string wire 2 of 12 of left end seat 11 and right end bases, when measuring current is passed through two power lead P1, when P2 and inductive coil 4, to excite string wire 2 to make the single vibration cutting magnetic line, the output of a-c cycle signal is arranged on the inductive coil 4, to test gained data and environment by secondary instrument 8 simultaneously, sensor characteristic parameter etc. is stored in the serial storage 5, in order to transferring inquiry later at any time, even signal wire S1, S2 and power lead P1, the unexpected breakdown of P2, as long as again with its connection, can access primary characteristic parameter and sensor number etc., carry out various computings and new test, and the test physical quantity that quantizes is not subjected to the restriction of long distance transmission, and is convenient and swift.This shows, string vibration type sensor with digital memory of the present invention is compared with string vibration type sensor with digital memory of the prior art, structure is simple more, volume is littler, weight is lighter, and the cost of single sensor is cheaper, thereby can be applicable to more test environment, its gravity effect to determinand is littler, and measuring accuracy is higher.
Claims (6)
1, a kind of string vibration type sensor with digital memory, it comprises left end seat (11), right end base (12) and one is located at the sealed enclosure (7) between left end seat (11) and the right end base (12), being packaged with one in this casing (7) is tensioning string wire (2) and the permanent magnet (3) and the inductive coil (4) of fulcrum with left end seat (11) and right end base (12), this permanent magnet (3) vertically is packaged in the relative both sides of string wire (2) with string wire (2) respectively with inductive coil (4), it is characterized in that: described sensor also includes storer (5), and described storer (5) links to each other with sensor secondary instrument (8) outward respectively with inductive coil (4).
2, string vibration type sensor with digital memory according to claim 1 is characterized in that: described storer (5) together is packaged in the sealed enclosure (7) with permanent magnet (3), inductive coil (4) and string wire (2).
3, string vibration type sensor with digital memory according to claim 1 and 2 is characterized in that: described storer (5) chip adopts electricity can write ROM (read-only memory).
4, string vibration type sensor with digital memory according to claim 3 is characterized in that: also lead to first signal wire (S1) and secondary signal line (S2) and first power lead (P1) and second source line (P2) on the described casing (7).
5, string vibration type sensor with digital memory according to claim 1 and 2 is characterized in that: described storer (5) is with I
2The form of C bus links to each other with the access hole of secondary instrument (8).
6, string vibration type sensor with digital memory according to claim 4 is characterized in that: described storer (5) is with I
2The form of C bus links to each other with the access hole of secondary instrument (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510032178 CN1743811A (en) | 2005-09-22 | 2005-09-22 | Vibration wire type digital memory sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510032178 CN1743811A (en) | 2005-09-22 | 2005-09-22 | Vibration wire type digital memory sensor |
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| Publication Number | Publication Date |
|---|---|
| CN1743811A true CN1743811A (en) | 2006-03-08 |
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Family Applications (1)
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|---|---|---|---|
| CN 200510032178 Pending CN1743811A (en) | 2005-09-22 | 2005-09-22 | Vibration wire type digital memory sensor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072763A (en) * | 2010-11-05 | 2011-05-25 | 邓铁六 | Unicoil steel string exciting and receiving circuit |
| CN103335750A (en) * | 2013-07-19 | 2013-10-02 | 江西飞尚科技有限公司 | Method for monitoring pumping unit dynamic load based on vibrating wire sensor |
| CN107687827A (en) * | 2017-08-23 | 2018-02-13 | 中国科学院声学研究所 | A kind of wireless passive sonic surface wave strain transducer with enhanced sensitivity formula structure |
| CN108534806A (en) * | 2017-03-03 | 2018-09-14 | 杨毅 | Resonant chord sensor and secondly core wire duplex switching method in the calibration of two core cables |
| CN112945426A (en) * | 2021-01-29 | 2021-06-11 | 西南石油大学 | Vibrating wire sensor and stress displacement testing method |
-
2005
- 2005-09-22 CN CN 200510032178 patent/CN1743811A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072763A (en) * | 2010-11-05 | 2011-05-25 | 邓铁六 | Unicoil steel string exciting and receiving circuit |
| CN103335750A (en) * | 2013-07-19 | 2013-10-02 | 江西飞尚科技有限公司 | Method for monitoring pumping unit dynamic load based on vibrating wire sensor |
| CN108534806A (en) * | 2017-03-03 | 2018-09-14 | 杨毅 | Resonant chord sensor and secondly core wire duplex switching method in the calibration of two core cables |
| CN108534806B (en) * | 2017-03-03 | 2024-02-20 | 杨毅 | Two-core system cable calibration inner Chu Zhenxian sensor and two-core wire duplex switching method thereof |
| CN107687827A (en) * | 2017-08-23 | 2018-02-13 | 中国科学院声学研究所 | A kind of wireless passive sonic surface wave strain transducer with enhanced sensitivity formula structure |
| CN112945426A (en) * | 2021-01-29 | 2021-06-11 | 西南石油大学 | Vibrating wire sensor and stress displacement testing method |
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